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Merck & Co

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FY2016 Annual Report · Merck & Co
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As filed with the Securities and Exchange Commission on February 28, 2017

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D. C. 20549
FORM 10-K

_________________________________

(MARK ONE)

☒☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the Fiscal Year Ended December 31, 2016

or

☐☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from                   to                 

_________________________________

Commission File No. 1-6571
Merck & Co., Inc.
2000 Galloping Hill Road
Kenilworth, N. J. 07033
(908) 740-4000

Incorporated
in
New
Jersey

I.R.S.
Employer
Identification
No.
22-1918501

Securities Registered pursuant to Section 12(b) of the Act:

Title
of
Each
Class

Common Stock ($0.50 par value)

1.125% Notes due 2021

0.500% Notes due 2024

1.875% Notes due 2026

2.500% Notes due 2034

1.375% Notes due 2036

Name
of
Each
Exchange
on
which
Registered

New York Stock Exchange

New York Stock Exchange

New York Stock Exchange

New York Stock Exchange

New York Stock Exchange

New York Stock Exchange

Number of shares of Common Stock ($0.50 par value) outstanding as of January 31, 2017: 2,745,571,067.
Aggregate market value of Common Stock ($0.50 par value) held by non-affiliates on June 30, 2016 based on closing price on June 30, 2016: $159,263,000,000.
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.     Yes    ☒☒        No    ☐☐
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.     Yes    ☐☐        No    ☒☒
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding  12  months  (or  for  such  shorter  period  that  the  registrant  was  required  to  file  such  reports),  and  (2)  has  been  subject  to  such  filing  requirements  for  the  past
90 days.     Yes    ☒☒        No    ☐☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be
submitted  and  posted  pursuant  to  Rule  405  of  Regulation  S-T  (§  232.405  of  this  chapter)  during  the  preceding  12  months  (or  for  such  shorter  period  that  the  registrant  was
required to submit and post such files).     Yes    ☒☒        No    ☐☐

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§ 229.405) is not contained herein, and will not be contained, to
the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.    
☐☐

Indicate  by check mark whether the registrant  is a large accelerated filer, an accelerated filer, a non-accelerated  filer, or a smaller reporting  company. See the

definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check One):

Large accelerated filer ☒☒

Accelerated filer ☐☐

Non-accelerated filer ☐☐

Smaller reporting company ☐☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes   ☐☐       No   ☒☒

Documents Incorporated by Reference:

 (Do not check if a smaller reporting company)

Proxy Statement for the Annual Meeting of Shareholders to be held May 23, 2017,
to be filed with the Securities and Exchange Commission within 120 days after the close of the fiscal year
covered by this report

Document

Part
of
Form
10-K

Part III

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Table of Contents

Part I

Item 1.

Item 1A.

Business

Risk Factors

Cautionary Factors that May Affect Future Results

Item 1B.

Unresolved Staff Comments

Item 2.

Item 3.

Item 4.

Item 5.

Item 6.

Item 7.

Item 7A.

Item 8.

Item 9.

Item 9A.

Properties

Legal Proceedings

Mine Safety Disclosures

Executive Officers of the Registrant

Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Selected Financial Data

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Part II

Quantitative and Qualitative Disclosures About Market Risk

Financial Statements and Supplementary Data

(a) Financial Statements

Notes to Consolidated Financial Statements

Report of Independent Registered Public Accounting Firm

(b) Supplementary Data

Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

Controls and Procedures

Management’s Report

Item 9B.

Other Information

Part III

Item 10.

Item 11.

Item 12.

Item 13.

Item 14.

Directors, Executive Officers and Corporate Governance

Executive Compensation

Security Ownership of Certain Beneficial Owners and Management and Related 
Stockholder Matters

Certain Relationships and Related Transactions, and Director Independence

Principal Accountant Fees and Services

Part IV

Item 15.

Exhibits and Financial Statement Schedules

Item 16.

Form 10-K Summary

Signatures

Page

1

18

27

28

28

28

28

29

30

32

33

68

69

69

73

126

127

128

128

128

129

130

130

131

131

131

132

135

136

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Item 1.

Business.

PART I

Merck & Co., Inc. (Merck or the Company) is a global health care company that delivers innovative health solutions through its prescription medicines,
vaccines,  biologic  therapies  and  animal  health  products.  The  Company’s  operations  are  principally  managed  on  a  products  basis  and  include  four  operating
segments, which are the Pharmaceutical, Animal Health, Healthcare Services and Alliances segments.

The Pharmaceutical segment is the only reportable segment. The Pharmaceutical segment includes human health pharmaceutical and vaccine products
marketed either directly by the Company or through joint ventures. Human health pharmaceutical products consist of therapeutic and preventive agents, generally
sold  by  prescription,  for  the  treatment  of  human  disorders.  The  Company  sells  these  human  health  pharmaceutical  products  primarily  to  drug  wholesalers  and
retailers,  hospitals,  government  agencies  and  managed  health  care  providers  such  as  health  maintenance  organizations,  pharmacy  benefit  managers  and  other
institutions. Vaccine products consist of preventive pediatric, adolescent and adult vaccines, primarily administered at physician offices. The Company sells these
human  health  vaccines  primarily  to  physicians,  wholesalers,  physician  distributors  and  government  entities.  Sales  of  vaccines  in  most  major  European  markets
were  marketed  through  the  Company’s  Sanofi  Pasteur  MSD  joint  venture  until  its  termination  on  December  31,  2016.  Beginning  in  2017,  Merck  will  record
vaccine sales in the European markets, which were previously part of the joint venture.

The Company also has animal health operations that discover, develop, manufacture and market animal health products, including vaccines, which the
Company  sells  to  veterinarians,  distributors  and  animal  producers.  The  Company’s  Healthcare  Services  segment  provides  services  and  solutions  that  focus  on
engagement, health analytics and clinical services to improve the value of care delivered to patients. Merck’s Alliances segment primarily includes results from the
Company’s relationship with AstraZeneca LP until the termination of that relationship on June 30, 2014. On October 1, 2014, the Company divested its Consumer
Care  segment  that  developed,  manufactured  and  marketed  over-the-counter,  foot  care  and  sun  care  products.  The  Company  was  incorporated  in  New  Jersey  in
1970.

For  financial  information  and  other  information  about  the  Company’s  segments,  see  Item  7.  “Management’s  Discussion  and  Analysis  of  Financial

Condition and Results of Operations” and Item 8. “Financial Statements and Supplementary Data” below.

All product or service marks appearing in type form different from that of the surrounding text are trademarks or service marks owned, licensed to,

promoted or distributed by Merck, its subsidiaries or affiliates, except as noted. All other trademarks or services marks are those of their respective owners.

Product Sales

Total Company sales, including sales of the Company’s top pharmaceutical products, as well as total sales of animal health products, were as follows:

2016

2015

2014

$

($
in
millions)

Total Sales

Pharmaceutical

Januvia/Janumet

Zetia/Vytorin

Gardasil/Gardasil
9

ProQuad/M-M-R
II /Varivax

Keytruda

Isentress

Remicade

Cubicin

Singulair

Pneumovax
23

Animal Health

Consumer Care (1)

39,807   $
35,151  
6,109  
3,701  
2,173  
1,640  
1,402  
1,387  
1,268  
1,087  
915  
641  
3,478  
—  
1,178  

39,498   $
34,782  
6,014  
3,777  
1,908  
1,505  
566  
1,511  
1,794  
1,127  
931  
542  
3,331  
3  
1,382  

42,237

36,042

6,002

4,166

1,738

1,394

55

1,673

2,372

25

1,092

746

3,454

1,547

1,194

Other Revenues (2)
(1)

 On
October
1,
2014,
the
Company
divested
its
Consumer
Care
segment
that
developed,
manufactured
and
marketed
over-the-counter,
foot
care
and
sun
care
products.
(2)

 Other
revenues
are
primarily
comprised
of
miscellaneous
corporate
revenues,
including
revenue
hedging
activities,
and
third-party
manufacturing
sales.

1

 
 
 
Table of Contents

Pharmaceutical

The  Company’s  pharmaceutical  products  include  therapeutic  and  preventive  agents,  generally  sold  by  prescription,  for  the  treatment  of  human

disorders. Certain of the products within the Company’s franchises are as follows:

Primary Care and Women’s Health

Cardiovascular: Zetia
(ezetimibe) (marketed as Ezetrol
in most countries outside the United States); Vytorin
(ezetimibe/simvastatin) (marketed as Inegy

outside the United States); and Atozet
(ezetimibe and atorvastatin) (marketed in certain countries outside of the United States), cholesterol modifying medicines.

Diabetes: Januvia
(sitagliptin) and Janumet
(sitagliptin/metformin HCl) for the treatment of type 2 diabetes.

General  Medicine  and  Women’s  Health:  NuvaRing
 (etonogestrel/ethinyl  estradiol  vaginal  ring),  a  vaginal  contraceptive  product  ; 
Implanon
(etonogestrel implant), a single-rod subdermal contraceptive implant/ Nexplanon
(etonogestrel implant), a single, radiopaque, rod-shaped subdermal contraceptive
implant; Dulera
Inhalation Aerosol (mometasone furoate/formoterol fumarate dihydrate), a combination medicine for the treatment of asthma; and Follistim
AQ
(follitropin beta injection) (marketed as Puregon
in most countries outside the United States), a fertility treatment.

Hospital and Specialty

Hepatitis: Zepatier
(elbasvir and grazoprevir) for the treatment of adult patients with chronic hepatitis C virus (HCV) genotype (GT) 1 or GT4 infection,

with ribavirin in certain patient populations; and PegIntron
(peginterferon alpha-2b) and Victrelis
(boceprevir), medicines for the treatment of chronic HCV.

HIV: Isentress
(raltegravir), an HIV integrase inhibitor for use in combination with other antiretroviral agents for the treatment of HIV-1 infection.

Hospital  Acute  Care:  Cubicin 
(
 daptomycin  for  injection),  an  I.V.  antibiotic  for  complicated  skin  and  skin  structure  infections  or  bacteremia,  when
caused by designated susceptible organisms; Noxafil
(posaconazole) for the prevention of invasive fungal infections; Invanz
(ertapenem sodium) for the treatment
of  certain  infections;  Cancidas
 (caspofungin  acetate),  an  anti-fungal  product;  Bridion
 (sugammadex)  Injection,  a  medication  for  the  reversal  of  two  types  of
neuromuscular blocking agents used during surgery; and Primaxin
(imipenem and cilastatin sodium), an anti-bacterial product.

Immunology: Remicade
(infliximab),  a  treatment  for  inflammatory  diseases;  and  Simponi
(golimumab),  a  once-monthly  subcutaneous  treatment  for

certain inflammatory diseases, which the Company markets in Europe, Russia and Turkey.

Oncology

Keytruda
(pembrolizumab) for the treatment of previously untreated metastatic non-small-cell lung cancer (NSCLC) in patients whose tumors express
high levels of PD-L1 (Tumor Proportion Score [TPS] of 50% or more) and previously treated metastatic NSCLC in patients whose tumors express PD-L1 (TPS of
1%  or  more),  as  well  as  advanced  melanoma  and  previously  treated  recurrent  or  metastatic  head  and  neck  cancer;  Emend
 (aprepitant)  for  the  prevention  of
chemotherapy-induced and post-operative nausea and vomiting; and Temodar
(temozolomide) (marketed as Temodal
outside the United States), a treatment for
certain types of brain tumors.

Diversified Brands

Respiratory: Singulair
(montelukast),  a  medicine  indicated  for  the  chronic  treatment  of  asthma  and  the  relief  of  symptoms  of  allergic  rhinitis;  and

Nasonex
(mometasone furoate monohydrate), an inhaled nasal corticosteroid for the treatment of nasal allergy symptoms .

Other: Cozaar
(losartan potassium) and Hyzaar
(losartan potassium and hydrochlorothiazide), treatments for hypertension; Arcoxia
(etoricoxib) for the
treatment  of  arthritis  and  pain,  which  the  Company  markets  outside  the  United  States;  Fosamax
(alendronate  sodium) (marketed  as Fosamac
in  Japan)  for  the
treatment and prevention of osteoporosis ;
and Zocor
(simvastatin), a statin for modifying cholesterol.

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Table of Contents

Vaccines

Gardasil
(Human Papillomavirus Quadrivalent [Types 6, 11, 16 and 18] Vaccine, Recombinant)/ Gardasil

9 (Human Papillomavirus 9-valent Vaccine,
Recombinant),  vaccines  to  help  prevent  certain  diseases  caused  by  certain  types  of  human  papillomavirus  (HPV)  ; 
ProQuad
 (Measles,  Mumps,  Rubella  and
Varicella  Virus  Vaccine  Live),  a pediatric  combination  vaccine  to  help protect  against  measles,  mumps,  rubella  and  varicella;  M-M-R
II  (Measles,  Mumps  and
Rubella Virus Vaccine Live), a vaccine to help prevent measles, mumps and rubella; Varivax
(Varicella Virus Vaccine Live), a vaccine to help prevent chickenpox
(varicella); Zostavax
(Zoster Vaccine Live), a vaccine to help prevent shingles (herpes zoster) ;
RotaTeq
(Rotavirus Vaccine, Live Oral, Pentavalent), a vaccine to
help  protect  against  rotavirus  gastroenteritis  in  infants  and  children;  and  Pneumovax
 23  (pneumococcal  vaccine  polyvalent),  a  vaccine  to  help  prevent
pneumococcal disease.

Animal
Health

The  Animal  Health  segment  discovers,  develops,  manufactures  and  markets  animal  health  products,  including  vaccines.  Principal  products  in  this

segment include:

Livestock  Products:  Nuflor
(Florfenicol)  antibiotic  range  for  use  in  cattle  and  swine;  Bovilis
/ Vista
vaccine  lines  for  infectious  diseases  in  cattle;
Banamine
(Flunixin  meglumine)  bovine  and  swine  anti-inflammatory;  Estrumate
(cloprostenol  sodium)  for  the  treatment  of  fertility  disorders  in  cattle;  Matrix
(altrenogest)  fertility  management  for  swine;  Resflor
 (florfenicol  and  flunixin  meglumine)  ,
 a  combination  broad-spectrum  antibiotic  and  non-steroidal  anti-
inflammatory drug for bovine respiratory disease; Zuprevo
(Tildipirosin) for bovine respiratory disease; Zilmax
(zilpaterol hydrochloride) and Revalor
(trenbolone
acetate and estradiol) to improve production efficiencies in beef cattle; Safe-Guard
(fenbendazole) de-wormer for cattle; M+Pac

(Mycoplasma Hyopneumoniae
Bacterin)  swine  pneumonia  vaccine;  and  Porcilis
 (Lawsonia  intracellularis  baterin)  and  Circumvent
 (Porcine  Circovirus  Vaccine,  Type  2,  Killed  Baculovirus
Vector) vaccine lines for infectious diseases in swine.

Poultry Products: Nobilis
/ Innovax
(Live Marek’s Disease Vector) ,
vaccine lines for poultry; and Paracox
and Coccivac
coccidiosis vaccines.

Companion Animal Products: Bravecto
(fluralaner), a line of products that kills fleas and ticks in dogs for up to 12 weeks; Nobivac
vaccine lines for
flexible  dog  and  cat  vaccination;  Otomax
(Gentamicin  sulfate,  USP;  Betamethasone  valerate  USP;  and  Clotrimazole  USP  ointment)/  Mometamax
(Gentamicin
sulfate,  USP,  Mometasone  Furoate  Monohydrate  and  Clotrimazole,  USP,  Otic  Suspension)/  Posatex
 (Orbifloxacin,  Mometasone  Furoate  Monohydrate  and
Posaconazole, Suspension) ear ointments for acute and chronic otitis; Caninsulin
/ Vetsulin
(porcine insulin zinc suspension) diabetes mellitus treatment for dogs
and cats; Panacur
(fenbendazole)/ Safeguard
(fenbendazole) broad-spectrum anthelmintic (de-wormer) for use in many animals; Regumate
(altrenogest) fertility
management for horses; Prestige
vaccine line for horses; and Activyl
(Indoxacrb) /Scalibor
(Deltamethrin) /Exspot
for protecting against bites from fleas, ticks,
mosquitoes and sandflies.

Aquaculture  Products:  Slice
(Emamectin  benzoate)  parasiticide  for  sea  lice  in  salmon;  Aquavac
(Avirulent  Live  Culture)/  Norvax
vaccines against

bacterial and viral disease in fish; Compact
PD
vaccine for salmon; and Aquaflor
(Florfenicol) antibiotic for farm-raised fish.

For a further discussion of sales of the Company’s products, see Item 7. “Management’s Discussion and Analysis of Financial Condition and Results of

Operations” below.

Product Approvals

In  January  2016,  Merck  announced  that  the  U.S.  Food  and  Drug  Administration  (FDA)  approved  Zepatier
for  the  treatment  of  adult  patients  with

chronic HCV GT1 or GT4 infection, with ribavirin in certain patient populations.

In February 2016, Merck announced that the FDA approved a supplemental new drug application for single-dose Emend
for injection for the prevention

of delayed nausea and vomiting in adults receiving initial and repeat courses of moderately emetogenic chemotherapy.

In May 2016, the Company received marketing approval from the European Medicines Agency (EMA) for Bravecto
Spot-On Solution for cats and dogs

and, in July 2016, the Company received approval in the United States to market the product under the tradename Bravecto
Topical.

3

Table of Contents

In July 2016, the European Commission (EC) approved Zepatier
, a once-daily, single tablet combination therapy in the treatment of chronic HCV GT1

or GT4 infection, with ribavirin in certain patient populations.

In August 2016, Merck announced that the FDA approved Keytruda
for the treatment of patients with recurrent or metastatic head and neck cancer with

disease progression on or after platinum-containing chemotherapy.

In October 2016, Merck announced that the FDA approved Keytruda
for the first-line treatment of patients with NSCLC whose tumors have high PD-

L1 expression (TPS of 50% or more) as determined by an FDA-approved test, with no EGFR or ALK genomic tumor aberrations.

In addition, in October  2016, Merck announced  that  the FDA approved  Zinplava
Injection 25 mg/mL. Zinplava
is indicated to reduce recurrence of
Clostridium 
difficile
 infection  (CDI)  in  patients  18  years  of  age  or  older  who  are  receiving  antibacterial  drug  treatment  of  CDI  and  are  at  high  risk  for  CDI
recurrence.

On January 3, 2017, Merck announced that the EC has approved Keytruda
for the first-line treatment of metastatic NSCLC in adults whose tumors have

high PD-L1 expression (TPS of 50% or more) with no EGFR or ALK positive tumor mutations.

Joint Ventures

Sanofi
Pasteur
MSD

On December 31, 2016, Merck and Sanofi Pasteur (Sanofi) terminated the equally-owned joint venture formed by the companies in 1994 to develop

and market human vaccines in Europe.

Licenses

In  1998,  a  subsidiary  of  Schering-Plough  Corporation  (Schering-Plough)  entered  into  a  licensing  agreement  with  Centocor  Ortho  Biotech  Inc.
(Centocor), a Johnson & Johnson (J&J) company, to market Remicade
, which is prescribed for the treatment of inflammatory diseases. In 2005, Schering-Plough’s
subsidiary exercised an option under its contract with Centocor for license rights to develop and commercialize Simponi
, a fully human monoclonal antibody. The
Company has marketing rights to both products throughout Europe, Russia and Turkey. Remicade
lost market exclusivity in major European markets in February
2015 and the Company no longer has market exclusivity in any of its marketing territories. The Company continues to have market exclusivity for Simponi
in all of
its marketing territories. All profits derived from Merck’s distribution of the two products in these countries are equally divided between Merck and J&J.

Competition and the Health Care Environment

Competition

The markets in which the Company conducts its business and the pharmaceutical industry in general are highly competitive and highly regulated. The
Company’s  competitors  include  other  worldwide  research-based  pharmaceutical  companies,  smaller  research  companies  with  more  limited  therapeutic  focus,
generic drug manufacturers and animal health care companies. The Company’s operations may be adversely affected by generic and biosimilar competition as the
Company’s  products  mature,  as  well  as  technological  advances  of  competitors,  industry  consolidation,  patents  granted  to  competitors,  competitive  combination
products, new products of competitors, the generic availability of competitors’ branded products, and new information from clinical trials of marketed products or
post-marketing surveillance. In addition, patent rights are increasingly being challenged by competitors, and the outcome can be highly uncertain. An adverse result
in a patent dispute can preclude commercialization of products or negatively affect sales of existing products and could result in the payment of royalties or in the
recognition of an impairment charge with respect to intangible assets associated with certain products. Competitive pressures have intensified as pressures in the
industry have grown.

Pharmaceutical competition involves a rigorous search for technological innovations and the ability to market these innovations effectively. With its
long-standing emphasis on research and development, the Company is well positioned to compete in the search for technological innovations. Additional resources
required  to  meet  market  challenges  include  quality  control,  flexibility  to  meet  customer  specifications,  an  efficient  distribution  system  and  a  strong  technical
information service. The Company is active in acquiring and marketing products through external alliances, such as licensing arrangements, and has been refining
its sales and marketing efforts to further address

4

Table of Contents

changing industry conditions. However, the introduction of new products and processes by competitors may result in price reductions and product displacements,
even for products protected by patents. For example, the number of compounds available to treat a particular disease typically increases over time and can result in
slowed sales growth or reduced sales for the Company’s products in that therapeutic category.

The  highly  competitive  animal  health  business  is  affected  by  several  factors  including  regulatory  and  legislative  issues,  scientific  and  technological
advances, product innovation, the quality and price of the Company’s products, effective promotional efforts and the frequent introduction of generic products by
competitors.

Health
Care
Environment
and
Government
Regulation

Global efforts toward health care cost containment continue to exert pressure on product pricing and market access. In the United States, federal and
state governments for many years also have pursued methods to reduce the cost of drugs and vaccines for which they pay. For example, federal laws require the
Company to pay specified rebates  for medicines reimbursed  by Medicaid and to provide discounts for outpatient  medicines  purchased by certain Public Health
Service entities and hospitals serving a disproportionate share of low income or uninsured patients.

Against this backdrop, the United States enacted major health care reform legislation in 2010 (the Patient Protection and Affordable Care Act (ACA)),
which began to be implemented in 2010. Various insurance market reforms have advanced and state and federal insurance exchanges were launched in 2014. With
respect  to  the  effect  of  the  law  on  the  pharmaceutical  industry,  the  law  increased  the  mandated  Medicaid  rebate  from  15.1%  to  23.1%,  expanded  the  rebate  to
Medicaid managed care utilization, and increased the types of entities eligible for the federal 340B drug discount program. The law also requires pharmaceutical
manufacturers  to  pay  a  50%  point  of  service  discount  to  Medicare  Part  D  beneficiaries  when  they  are  in  the  Medicare  Part  D  coverage  gap  (i.e.,  the  so-called
“donut hole”). Approximately $415 million, $550 million and $430 million was recorded by Merck as a reduction to revenue in 2016, 2015 and 2014, respectively,
related to the donut hole provision. Also, pharmaceutical  manufacturers  are now required to pay an annual non-tax deductible health care reform fee. The total
annual industry fee was $3.0 billion in 2016 and will increase to $4.0 billion in 2017. The fee is assessed on each company in proportion to its share of prior year
branded  pharmaceutical  sales  to  certain  government  programs,  such  as  Medicare  and  Medicaid.  The  Company  recorded  $193  million,  $173  million  and  $390
million of costs within Marketing
and
administrative
expenses in 2016, 2015 and 2014, respectively, for the annual health care reform fee. The higher expenses in
2014  reflect  final  regulations  on  the  annual  health  care  reform  fee  issued  by  the  Internal  Revenue  Service  (IRS)  on  July  28,  2014.  The  final  IRS  regulations
accelerated the recognition criteria for the fee obligation by one year to the year in which the underlying sales used to allocate the fee occurred rather than the year
in which the fee was paid. As a result of this change, Merck recorded an additional year of expense of $193 million in 2014. In February 2016, the Centers for
Medicare  &  Medicaid  Services  (CMS)  issued  the  Medicaid  rebate  final  rule  that  implements  provisions  of  the  ACA effective  April  1,  2016.  The  rule  provides
comprehensive guidance on the calculation of Average Manufacturer Price and Best Price; two metrics utilized to determine the rebates drug manufacturers are
required  to  pay  to  state  Medicaid  programs.  The  impact  of  changes  resulting  from  the  issuance  of  the  rule  is  not  material  to  Merck  at  this  time.  However,  the
Company is still awaiting guidance from CMS on two aspects of the rule that were deferred for later implementation. These include a definition of what constitutes
a product ‘line extension’  and a delay in the participation  of the U.S. Territories  in the Medicaid  Drug Rebate Program until April 1, 2020. The Company will
evaluate the financial impact of these two elements when they become effective.

There  is  significant  uncertainty  about  the  future  of  the  ACA  in  particular  and  healthcare  laws  in  general  in  the  United  States.  The  Company  is
participating in the debate and monitoring how any proposed changes could affect its business. The Company is unable to predict the likelihood of changes to the
ACA.  Depending  on  the  nature  of  any  repeal  and  replacement  of  the  ACA,  such  actions  could  have  a  material  adverse  effect  on  the  Company’s  results  of
operations, financial condition or business.

Also, during 2016, the Vermont legislature passed a pharmaceutical cost transparency law. The law requires manufacturers identified by the Vermont
Green Mountain Care Board to report certain product price information to the Vermont Attorney General. The Attorney General is then required to submit a report
to the legislature. A number of other states have introduced legislation of this kind and the Company expects that states will continue their focus on pharmaceutical
price transparency. The extent to which these proposals will pass into law is unknown at this time.

The  Company  also  faces  increasing  pricing  pressure  globally  from  managed  care  organizations,  government  agencies  and  programs  that  could

negatively affect the Company’s sales and profit margins. In the United States, these

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include  (i)  practices  of  managed  care  organizations,  federal  and  state  exchanges,  and  institutional  and  governmental  purchasers,  and  (ii)  U.S.  federal  laws  and
regulations related to Medicare and Medicaid, including the Medicare Prescription Drug Improvement and Modernization Act of 2003 and the ACA.

Changes  to  the  health  care  system  enacted  as  part  of  health  care  reform  in  the  United  States,  as  well  as  increased  purchasing  power  of  entities  that
negotiate  on  behalf  of  Medicare,  Medicaid,  and  private  sector  beneficiaries,  could  result  in  further  pricing  pressures.  As  an  example,  health  care  reform  is
contributing to an increase in the number of patients in the Medicaid program under which sales of pharmaceutical products are subject to substantial rebates.

In addition, in the effort to contain the U.S. federal deficit, the pharmaceutical industry could be considered a potential source of savings via legislative
proposals  that  have  been  debated  but  not  enacted.  These  types  of  revenue  generating  or  cost  saving  proposals  include  additional  direct  price  controls  in  the
Medicare prescription drug program (Part D). In addition, Congress may again consider proposals to allow, under certain conditions, the importation of medicines
from other countries. It remains very uncertain as to what proposals, if any, may be included as part of future federal budget deficit reduction proposals that would
directly or indirectly affect the Company.

In the U.S. private sector, consolidation and integration among healthcare providers is a major factor in the competitive marketplace for pharmaceutical
products. Health plans and pharmacy benefit managers have been consolidating into fewer, larger entities, thus enhancing their purchasing strength and importance.
Private third-party insurers, as well as governments, increasingly employ formularies to control costs by negotiating discounted prices in exchange for formulary
inclusion. Failure to obtain timely or adequate pricing or formulary placement for Merck’s products or obtaining such pricing or placement at unfavorable pricing
could adversely impact revenue. In addition to formulary tier co-pay differentials, private health insurance companies and self-insured employers have been raising
co-payments  required  from  beneficiaries,  particularly  for  branded  pharmaceuticals  and  biotechnology  products.  Private  health  insurance  companies  also  are
increasingly imposing utilization management tools, such as clinical protocols, requiring prior authorization for a branded product if a generic product is available
or requiring the patient to first fail on one or more generic products before permitting access to a branded medicine. These same utilization management tools are
also used in treatment  areas in which the payer has taken the position that multiple branded products are therapeutically  comparable. As the U.S. payer market
concentrates  further  and as more drugs become available  in generic  form, pharmaceutical  companies  may face greater  pricing pressure from private  third-party
payers.

In  order  to  provide  information  about  the  Company’s  pricing  practices,  the  Company  recently  posted    on  its  website  its  first  Pricing  Action
Transparency Report for the United States for the years 2010 - 2016. The report provides the Company’s average annual list price and net price increases across the
Company’s U.S. portfolio dating back to 2010.  The report shows that the Company’s average annual net price increases (after taking sales deductions such as
rebates, discounts and returns into account) across the U.S. human health portfolio have been in the low to mid-single digits since 2010.  Additionally, the weighted
average annual discount rate has been steadily increasing over time, reflecting the competitive market for branded medicines and the impact of the ACA. In 2016,
the Company’s gross U.S. sales were reduced by 40.9% as a result of rebates, discounts and returns.

Efforts toward health care cost containment also remain intense in European countries. The Company faces competitive pricing pressure resulting from
generic  and biosimilar  drugs. In addition,  a majority  of countries  in Europe attempt  to contain drug costs by engaging in reference  pricing in which authorities
examine pre-determined markets for published prices of drugs by brand. The authorities then use price data from those markets to set new local prices for brand-
name drugs, including the Company’s. Guidelines for examining reference pricing are usually set in local markets and can be changed pursuant to local regulations.

In addition, in Japan, the pharmaceutical industry is subject to government-mandated biennial price reductions of pharmaceutical products and certain
vaccines,  which occurred  in 2016. Furthermore,  the government  can order repricings  for classes  of drugs if it determines  that  it is appropriate  under applicable
rules.

Certain markets outside of the United States have also implemented other cost management strategies, such as health technology assessments (HTA),
which require additional data, reviews and administrative processes, all of which increase the complexity, timing and costs of obtaining product reimbursement and
exert downward pressure on available reimbursement. In the United States, HTAs are also being used by government and private payers.

The Company’s focus on emerging markets has continued. Governments in many emerging markets are also focused on constraining health care costs

and have enacted price controls and related measures, such as compulsory

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licenses, that aim to put pressure on the price of pharmaceuticals and constrain market access. The Company anticipates that pricing pressures and market access
challenges will continue in 2017 to varying degrees in the emerging markets.

Beyond pricing and market access challenges, other conditions in emerging market countries can affect the Company’s efforts to continue to grow in
these markets, including potential political instability, significant currency fluctuation and controls, financial crises, limited or changing availability of funding for
health care, and other developments that may adversely impact the business environment for the Company. Further, the Company may engage third-party agents to
assist in operating in emerging market countries, which may affect its ability to realize continued growth and may also increase the Company’s risk exposure.

In addressing cost containment pressures, the Company engages in public policy advocacy with policymakers and continues to work to demonstrate that
its medicines provide value to patients and to those who pay for health care. The Company advocates with government policymakers to encourage a long-term
approach  to sustainable  health  care  financing  that  ensures  access  to innovative  medicines  and does not disproportionately  target  pharmaceuticals  as a source  of
budget savings. In markets with historically low rates of health care spending, the Company encourages those governments to increase their investments and adopt
market reforms in order to improve their citizens’ access to appropriate health care, including medicines.

Operating  conditions  have  become  more  challenging  under  the  global  pressures  of  competition,  industry  regulation  and  cost  containment  efforts.
Although  no  one  can  predict  the  effect  of  these  and  other  factors  on  the  Company’s  business,  the  Company  continually  takes  measures  to  evaluate,  adapt  and
improve  the  organization  and  its  business  practices  to  better  meet  customer  needs  and  believes  that  it  is  well  positioned  to  respond  to  the  evolving  health  care
environment and market forces.

The  pharmaceutical  industry  is  also  subject  to  regulation  by  regional,  country,  state  and  local  agencies  around  the  world  focused  on  standards  and

processes for determining drug safety and effectiveness, as well as conditions for sale or reimbursement.

Of  particular  importance  is  the  FDA  in  the  United  States,  which  administers  requirements  covering  the  testing,  approval,  safety,  effectiveness,
manufacturing, labeling, and marketing of prescription pharmaceuticals. In some cases, the FDA requirements and practices have increased the amount of time and
resources  necessary  to  develop  new  products  and  bring  them  to  market  in  the  United  States.  At  the  same  time,  the  FDA  has  committed  to  expediting  the
development and review of products bearing the “breakthrough therapy” designation, which has accelerated the regulatory review process for medicines with this
designation.

The  European  Union  (EU)  has  adopted  directives  and  other  legislation  concerning  the  classification,  labeling,  advertising,  wholesale  distribution,
integrity of the supply chain, enhanced pharmacovigilance monitoring and approval for marketing of medicinal products for human use. These provide mandatory
standards  throughout  the  EU,  which  may  be  supplemented  or  implemented  with  additional  regulations  by  the  EU  member  states.  The  Company’s  policies  and
procedures are already consistent with the substance of these directives; consequently, it is believed that they will not have any material effect on the Company’s
business.

The Company believes that it will continue to be able to conduct its operations, including launching new drugs, in this regulatory environment. (See

“Research and Development” below for a discussion of the regulatory approval process.)

Access
to
Medicines

As a global health care company, Merck’s primary role is to discover and develop innovative medicines and vaccines. The Company also recognizes
that  it  has  an  important  role  to  play  in  helping  to  improve  access  to  its  products  around  the  world.  The  Company’s  efforts  in  this  regard  are  wide-ranging  and
include a set of principles that the Company strives to embed into its operations and business strategies to guide the Company’s worldwide approach to expanding
access  to health  care.  In  addition,  the Company  has many  far-reaching  philanthropic  programs.  The Merck  Patient  Assistance  Program  provides  medicines  and
adult vaccines for free to people in the United States who do not have prescription drug or health insurance coverage and who, without the Company’s assistance,
cannot afford their Merck medicine and vaccines. In 2011, Merck launched “Merck for Mothers,” a long-term effort with global health partners to end preventable
deaths from complications of pregnancy and childbirth. Merck has also provided funds to the Merck Foundation, an independent organization, which has partnered
with a variety of organizations dedicated to improving global health.

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Table of Contents

Privacy and Data Protection

The Company is subject to a significant number of privacy and data protection laws and regulations globally, many of which place restrictions on the
Company’s ability to transfer, access and use personal data across its business. The legislative and regulatory landscape for privacy and data protection continues to
evolve. There has been increased attention to privacy and data protection issues in both developed and emerging markets with the potential to affect directly the
Company’s  business,  including  a  new  EU  General  Data  Protection  Regulation,  which  will  become  effective  in  2018  and  impose  penalties  up  to  4%  of  global
revenue, additional laws and regulations enacted in the United States, Europe, Asia and Latin America, increased enforcement and litigation activity in the United
States and other developed markets, and increased regulatory cooperation among privacy authorities globally. The Company has adopted a comprehensive global
privacy program to manage these evolving risks which has been certified as compliant with and approved by the Asia Pacific Economic Cooperation Cross-Border
Privacy Rules System, the EU-U.S. Privacy Shield Program, and the Binding Corporate Rules in the EU.

Distribution

The Company sells its human health pharmaceutical products primarily to drug wholesalers and retailers, hospitals, government agencies and managed
health care providers, such as health maintenance organizations, pharmacy benefit managers and other institutions. Human health vaccines are sold primarily to
physicians,  wholesalers,  physician  distributors  and  government  entities.  The  Company’s  professional  representatives  communicate  the  effectiveness,  safety  and
value  of  the  Company’s  pharmaceutical  and  vaccine  products  to  health  care  professionals  in  private  practice,  group  practices,  hospitals  and  managed  care
organizations. The Company sells its animal health products to veterinarians, distributors and animal producers.

Raw Materials

Raw  materials  and  supplies,  which  are  generally  available  from  multiple  sources,  are  purchased  worldwide  and  are  normally  available  in  quantities

adequate to meet the needs of the Company’s business.

Patents, Trademarks and Licenses

Patent protection is considered, in the aggregate, to be of material importance to the Company’s marketing of its products in the United States and in
most major foreign markets. Patents may cover products per
se
, pharmaceutical formulations, processes for or intermediates useful in the manufacture of products
or the uses of products. Protection  for individual products extends for varying periods in accordance with the legal life of patents in the various countries.  The
protection afforded, which may also vary from country to country, depends upon the type of patent and its scope of coverage.

The Food and Drug Administration Modernization Act includes a Pediatric Exclusivity Provision that may provide an additional six months of market
exclusivity in the United States for indications of new or currently marketed drugs if certain agreed upon pediatric studies are completed by the applicant. Current
U.S. patent law provides additional patent term for periods when the patented product was under regulatory review by the FDA. The EU also provides an additional
six  months  of  pediatric  market  exclusivity  attached  to  a  product’s  Supplementary  Protection  Certificate  (SPC).  Japan  provides  the  additional  term  for  pediatric
studies attached to market exclusivity unrelated to patent rights.

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Table of Contents

Patent portfolios developed for products introduced by the Company normally provide market exclusivity. The Company has the following key patent
protection in the United States, the EU and Japan (including the potential for patent term extensions (PTE) and SPCs where indicated) for the following marketed
products:

Year of Expiration (U.S.)

Year of Expiration (EU) (1)

Year of Expiration (Japan)

Product

Invanz

Arcoxia

Cancidas

Zostavax

Dulera

Zetia
(2)

Vytorin

Asmanex
NuvaRing
(3)

Emend
for Injection

Follistim
AQ

Noxafil

RotaTeq

Recombivax

Januvia

Janumet

Janumet
XR

Isentress

Simponi

Bridion

Nexplanon

Bravecto

Gardasil

Gardasil
9

Keytruda

Zerbaxa

Sivextro

Zinplava

Belsomra

2017 (composition)

Not Marketed

2017 (formulation)

Expired

2017 (formulation)/
2020 (combination)

2017

2017

2018 (formulation)

2018 (delivery system)
2019 (4)

2019 (formulation)

2019

2019

2020 (method of making)
2022 (4)
2022 (4)
2022 (4)
2023 (4)
N/A (6)
2026 (4)
 (with pending PTE)

2027 (device)

2027 (with pending PTE)

2028

2028

2028
2028 (4)
 (with pending PTE)
2028 (4)

2028 (with pending PTE)
2029 (4)
2031 (4)

2017

2017

2017

2018 (use)

N/A

2018

2019

2018 (formulation)

2018 (delivery system)
2020 (4)

2019 (formulation)

2019

Expired

Expired
2022 (4)

2023

N/A
2022 (4)

2024

2023

N/A

Not Marketed

2019

N/A

N/A

2019

2019

2020 (formulation)

N/A

2020

2019 (formulation)

N/A

Expired

Expired
2025-2026 (5)

N/A

N/A

2022
N/A (6)

2024

2025 (device)

Not Marketed

2025 (patent), 2029 (SPCs)
2021 (4)
2025 (patent) ,
 2030 (4)
 (SPCs)
2028 (patent), 2030 (4)
 (SPCs)
2023 (patent), 2028 (4)
 (SPCs)
2024 (patent), 2029 (4)
 (SPCs)
2025 (7)

N/A
2030 (patent), 2031 (4)
 (SPCs)

2029

2017

N/A

2032 (with pending PTE)

N/A

N/A

N/A

2031

Zepatier
N/A:
Note: Compound
patent
unless
otherwise
noted.
Certain
of
the
products
listed
may
be
the
subject
of
patent
litigation.
See
Item
8.
“Financial
Statements
and
Supplementary
Data,”
Note
10.
“Contingencies
and
Environmental

Currently
no
marketing
approval.

2030

Liabilities”
below.

(1)



(2)


(3)


(4)


(5)



(6)


(7)



The
EU
date
represents
the
expiration
date
for
the
following
five
countries:
France,
Germany,
Italy,
Spain
and
the
UK
(Major
EU
Markets).
If
an
SPC
has
been
granted
in
some
but
not
all
Major
EU
Markets,
both
the
patent
expiry
date
and
the
SPC
expiry
date
are
listed.
By
agreement,
a
generic
manufacturer
launched
a
generic
version
of
Zetia in
the
United
States
in
December
2016.
In
August
2016,
a
district
court
decision
found
invalid
the
Company’s
patent
claiming
NuvaRing ’s
delivery
system.
That
decision
is
currently
under
appeal.
Eligible
for
6
months
Pediatric
Exclusivity.
The
PTE
system
in
Japan
allows
for
a
patent
to
be
extended
more
than
once
provided
the
later
approval
is
directed
to
a
different
indication
from
that
of
the
previous
approval.
This
may
result
in
multiple
PTE
approvals
for
a
given
patent,
each
with
its
own
expiration
date.
The
Company
has
no
marketing
rights
in
the
U.S.
and
Japan.
SPC
applications
to
be
filed
by
July
2017.
Expected
expiry
2030.
Eligible
for
pediatric
exclusivity.

While the expiration of a product patent normally results in a loss of market exclusivity for the covered pharmaceutical product, commercial benefits
may  continue  to  be  derived  from:  (i)  later-granted  patents  on  processes  and  intermediates  related  to  the  most  economical  method  of  manufacture  of  the  active
ingredient of such product; (ii) patents relating to the use of such product; (iii) patents relating to novel compositions and formulations; and (iv) in the United States
and certain other countries, market exclusivity that may be available under relevant law. The effect of product patent expiration on pharmaceutical products also
depends upon many other factors such as the nature of the market and the position of the product in it, the growth of the market, the complexities and economics of
the process for manufacture of the active ingredient of the product and the requirements of new drug provisions of the Federal Food, Drug and Cosmetic Act or
similar laws and regulations in other countries.

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Additions to market exclusivity are sought in the United States and other countries through all relevant laws, including laws increasing patent life. Some
of  the  benefits  of  increases  in  patent  life  have  been  partially  offset  by  an  increase  in  the  number  of  incentives  for  and  use  of  generic  products.  Additionally,
improvements in intellectual property laws are sought in the United States and other countries through reform of patent and other relevant laws and implementation
of international treaties.

The Company has the following key U.S. patent protection for drug candidates under review in the United States by the FDA. Additional patent term

may be provided for these pipeline candidates based on Patent Term Restoration and Pediatric Exclusivity.  

Under Review (in the U.S.)

V419 (pediatric hexavalent combination vaccine)

Currently Anticipated
Year of Expiration (in the U.S.)

2020 (method of making)

The Company also has the following key U.S. patent protection for drug candidates in Phase 3 development:  

Phase 3 Drug Candidate

V920 (ebola vaccine)

MK-8228 (letermovir)

MK-0859 (anacetrapib)

MK-7655A (relebactam + imipenem/cilastatin)

MK-8931 (verubecestat)

MK-1439 (doravirine)

MK-8835 (ertuglifozin)

MK-8835A (ertuglifozin + sitagliptin)

MK-8835B (ertuglifozin + metformin)

MK-1242 (vericiguat)

Currently Anticipated
Year of Expiration (in the U.S.)

2023

2024

2027

2030

2030

2031

2030

2030

2030

2031

Unless otherwise noted, the patents in the above charts are compound patents. Each patent is subject to any future patent term restoration of up to five
years  and  six  month  pediatric  market  exclusivity,  either  or  both  of  which  may  be  available.  In  addition,  depending  on  the  circumstances  surrounding  any  final
regulatory approval of the compound, there may be other listed patents or patent applications pending that could have relevance to the product as finally approved;
the relevance of any such application would depend upon the claims that ultimately may be granted and the nature of the final regulatory approval of the product.
Also, regulatory exclusivity tied to the protection of clinical data is complementary to patent protection and, in some cases, may provide more effective or longer
lasting marketing exclusivity than a compound’s patent estate. In the United States, the data protection generally runs five years from first marketing approval of a
new chemical entity, extended to seven years for an orphan drug indication and 12 years from first marketing approval of a biological product.

For  further  information  with  respect  to  the  Company’s  patents,  see  Item  1A.  “Risk  Factors”  and  Item  8.  “Financial  Statements  and  Supplementary

Data,” Note 10. “Contingencies and Environmental Liabilities” below.

Worldwide,  all  of  the  Company’s  important  products  are  sold  under  trademarks  that  are  considered  in  the  aggregate  to  be  of  material  importance.
Trademark  protection continues in some countries  as long as used; in other countries,  as long as registered.  Registration is for fixed terms  and can be renewed
indefinitely.

Royalty income in 2016 on patent and know-how licenses and other rights amounted to $222 million. Merck also incurred royalty expenses amounting

to $1.1 billion in 2016 under patent and know-how licenses it holds.

Research and Development

The  Company’s  business  is  characterized  by  the  introduction  of  new  products  or  new  uses  for  existing  products  through  a  strong  research  and
development program. Approximately 12,300 people are employed in the Company’s research activities. Research and development expenses were $10.1 billion in
2016 , $6.7 billion in 2015 and $7.2 billion in 2014 (which included restructuring costs and acquisition and divestiture-related costs in all years). The Company
prioritizes its research and development efforts and focuses on candidates that it believes represent breakthrough science that will make a difference for patients
and payers.

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Table of Contents

The Company maintains a number of long-term exploratory and fundamental research programs in biology and chemistry as well as research programs
directed toward product development. The Company’s research and development model is designed to increase productivity and improve the probability of success
by  prioritizing  the  Company’s  research  and  development  resources  on  candidates  the  Company  believes  are  capable  of  providing  unambiguous,  promotable
advantages to patients and payers and delivering the maximum value of its approved medicines and vaccines through new indications and new formulations. Merck
is  pursuing  emerging  product  opportunities  independent  of  therapeutic  area  or  modality  (small  molecule,  biologics  and  vaccines)  and  is  building  its  biologics
capabilities. The Company is committed to making externally sourced programs a greater component of its pipeline strategy, with a focus on supplementing its
internal research with a licensing and external alliance strategy focused on the entire spectrum of collaborations from early research to late-stage compounds, as
well as access to new technologies.

The  Company  also  reviews  its  pipeline  to  examine  candidates  which  may  provide  more  value  through  out-licensing.  The  Company  continues  to

evaluate certain late-stage clinical development and platform technology assets to determine their out-licensing or sale potential.

The  Company’s  clinical  pipeline  includes  candidates  in  multiple  disease  areas,  including  atherosclerosis,  cancer,  cardiovascular  diseases,  diabetes,

infectious diseases, inflammatory/autoimmune diseases, neurodegenerative diseases, and respiratory diseases.

In the development of human health products, industry practice and government regulations in the United States and most foreign countries provide for
the determination of effectiveness and safety of new chemical compounds through preclinical tests and controlled clinical evaluation. Before a new drug or vaccine
may  be  marketed  in the  United  States,  recorded  data  on preclinical  and  clinical  experience  are  included  in the  New Drug Application  (NDA) for a  drug  or  the
Biologics License Application (BLA) for a vaccine or biologic submitted to the FDA for the required approval.

Once the Company’s scientists  discover  a new small  molecule  compound or biologic  that they believe  has promise to treat  a medical  condition,  the
Company commences preclinical testing with that compound. Preclinical testing includes laboratory testing and animal safety studies to gather data on chemistry,
pharmacology,  immunogenicity  and  toxicology.  Pending  acceptable  preclinical  data,  the  Company  will  initiate  clinical  testing  in  accordance  with  established
regulatory  requirements.  The  clinical  testing  begins  with  Phase  1  studies,  which  are  designed  to  assess  safety,  tolerability,  pharmacokinetics,  and  preliminary
pharmacodynamic activity of the compound in humans. If favorable, additional, larger Phase 2 studies are initiated to determine the efficacy of the compound in
the affected population, define appropriate dosing for the compound, as well as identify any adverse effects that could limit the compound’s usefulness. In some
situations, the clinical program incorporates adaptive design methodology to use accumulating data to decide how to modify aspects of the ongoing clinical study
as it continues, without undermining the validity and integrity of the trial. One type of adaptive clinical trial is an adaptive Phase 2a/2b trial design, a two-stage trial
design consisting of a Phase 2a proof-of-concept stage and a Phase 2b dose-optimization finding stage. If data from the Phase 2 trials are satisfactory, the Company
commences large-scale Phase 3 trials to confirm the compound’s efficacy and safety. Another type of adaptive clinical trial is an adaptive Phase 2/3 trial design, a
study that includes an interim analysis and an adaptation that changes the trial from having features common in a Phase 2 study (e.g. multiple dose groups) to a
design similar to a Phase 3 trial. An adaptive Phase 2/3 trial design reduces timelines by eliminating activities which would be required to start a separate study.
Upon completion of Phase 3 trials, if satisfactory, the Company submits regulatory filings with the appropriate regulatory agencies around the world to have the
product  candidate  approved  for  marketing.  There  can  be  no  assurance  that  a  compound  that  is  the  result  of  any  particular  program  will  obtain  the  regulatory
approvals necessary for it to be marketed.

Vaccine development follows the same general pathway as for drugs. Preclinical testing focuses on the vaccine’s safety and ability to elicit a protective
immune response (immunogenicity). Pre-marketing vaccine clinical trials are typically done in three phases. Initial Phase 1 clinical studies are conducted in normal
subjects to evaluate the safety, tolerability and immunogenicity of the vaccine candidate. Phase 2 studies are dose-ranging studies. Finally, Phase 3 trials provide
the necessary data on effectiveness and safety. If successful, the Company submits regulatory filings with the appropriate regulatory agencies.

In  the  United  States,  the  FDA  review  process  begins  once  a  complete  NDA  or  BLA  is  submitted,  received  and  accepted  for  review  by  the  agency.
Within 60 days after receipt, the FDA determines if the application is sufficiently complete to permit a substantive review. The FDA also assesses, at that time,
whether the application will be granted

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Table of Contents

a priority review or standard review. Pursuant to the Prescription Drug User Fee Act V (PDUFA), the FDA review period target for NDAs or original BLAs is
either  six  months,  for  priority  review,  or  ten  months,  for  a  standard  review,  from  the  time  the  application  is  deemed  sufficiently  complete.  Once  the  review
timelines  are  determined,  the  FDA  will  generally  act  upon  the  application  within  those  timelines,  unless  a  major  amendment  has  been  submitted  (either  at  the
Company’s own initiative or the FDA’s request) to the pending application. If this occurs, the FDA may extend the review period to allow for review of the new
information, but by no more than three months. Extensions to the review period are communicated to the Company. The FDA can act on an application either by
issuing an approval letter or by issuing a Complete Response Letter (CRL) stating that the application will not be approved in its present form and describing all
deficiencies that the FDA has identified. Should the Company wish to pursue an application after receiving a CRL, it can resubmit the application with information
that addresses the questions or issues identified by the FDA in order to support approval. Resubmissions are subject to review period targets, which vary depending
on the underlying submission type and the content of the resubmission.

The FDA has four program designations — Fast Track, Breakthrough Therapy, Accelerated Approval, and Priority Review — to facilitate and expedite
development  and  review  of  new  drugs  to  address  unmet  medical  needs  in  the  treatment  of  serious  or  life-threatening  conditions.  The  Fast  Track  designation
provides pharmaceutical manufacturers with opportunities for frequent interactions with FDA reviewers during the product’s development and the ability for the
manufacturer to do a rolling submission of the NDA/BLA. A rolling submission allows completed portions of the application to be submitted and reviewed by the
FDA on an ongoing basis. The Breakthrough Therapy designation provides manufacturers with all of the features of the Fast Track designation as well as intensive
guidance on implementing an efficient development program for the product and a commitment by the FDA to involve senior managers and experienced staff in
the  review.  The  Accelerated  Approval  designation  allows  the  FDA  to  approve  a  product  based  on  an  effect  on  a  surrogate  or  intermediate  endpoint  that  is
reasonably likely to predict a product’s clinical benefit and generally requires the manufacturer to conduct required post-approval confirmatory trials to verify the
clinical benefit. The Priority Review designation means that the FDA’s goal is to take action on the NDA/BLA within six months, compared to ten months under
standard review.

In  addition,  under  the  Generating  Antibiotic  Incentives  Now  Act,  the  FDA  may  grant  Qualified  Infectious  Disease  Product  (QIDP)  status  to
antibacterial or antifungal drugs intended to treat serious or life threatening infections including those caused by antibiotic or antifungal resistant pathogens, novel
or emerging infectious pathogens, or other qualifying pathogens. QIDP designation offers certain incentives for development of qualifying drugs, including Priority
Review  of the  NDA when  filed,  eligibility  for  Fast  Track  designation,  and  a  five-year  extension  of  applicable  exclusivity  provisions  under  the  Food, Drug and
Cosmetic Act.

The primary method the Company uses to obtain marketing authorization of pharmaceutical products in the EU is through the “centralized procedure.”
This  procedure  is  compulsory  for  certain  pharmaceutical  products,  in  particular  those  using  biotechnological  processes,  and  is  also  available  for  certain  new
chemical compounds and products. A company seeking to market an innovative pharmaceutical product through the centralized procedure must file a complete set
of  safety  data  and  efficacy  data  as  part  of  a  Marketing  Authorization  Application  (MAA)  with  the  EMA.  After  the  EMA  evaluates  the  MAA,  it  provides  a
recommendation to the EC and the EC then approves or denies the MAA. It is also possible for new chemical products to obtain marketing authorization in the EU
through a “mutual recognition procedure” in which an application is made to a single member state and, if the member state approves the pharmaceutical product
under a national procedure, the applicant may submit that approval to the mutual recognition procedure of some or all other member states.

Outside  of  the  United  States  and  the  EU,  the  Company  submits  marketing  applications  to  national  regulatory  authorities.  Examples  of  such  are  the
Pharmaceuticals and Medical Devices Agency in Japan, Health Canada, Agência Nacional de Vigilância Sanatária in Brazil, Korea Food and Drug Administration
in South Korea, Therapeutic Goods Administration in Australia and China Food and Drug Administration. Each country has a separate and independent review
process and timeline. In many markets, approval times can be longer as the regulatory authority requires approval in a major market, such as the United States or
the EU, and issuance of a Certificate of Pharmaceutical Product from that market before initiating their local review process.

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Research
and
Development
Update

The Company currently has several candidates under regulatory review in the United States.

Keytruda
is an FDA-approved anti-PD-1 (programmed death receptor-1) therapy in clinical development for expanded indications in different cancer

types. Keytruda
is currently approved for the treatment of NSCLC, melanoma, advanced melanoma, and head and neck cancer.

In February 2017, the FDA accepted for review two supplemental BLAs (sBLA) for Keytruda
in patients with locally advanced or metastatic urothelial
cancer,  including  most  bladder  cancers.  The  application  for  first-line  use  was  granted  Priority  Review  for  the  treatment  of  these  patients  who  are  ineligible  for
cisplatin-containing  therapy.  The  application  for  second-line  use  was  granted  Priority  Review  for  these  patients  with  disease  progression  on  or  after  platinum-
containing  chemotherapy.  The  PDUFA  action  date  for  both  applications  is  June  14,  2017.  The  FDA  previously  granted  Breakthrough  Therapy  designation  to
Keytruda
for the second-line treatment of patients with locally advanced or metastatic urothelial cancer with disease progression on or after platinum-containing
chemotherapy.

In January 2017, the FDA accepted for review an sBLA for Keytruda
plus chemotherapy (pemetrexed plus carboplatin) for the first-line treatment of
patients with metastatic or advanced non-squamous NSCLC regardless of PD-L1 expression and with no EGFR or ALK genomic tumor aberrations. This is the
first application for regulatory approval of Keytruda
in combination with another treatment. The FDA granted Priority Review with a PDUFA action date of May
10, 2017. The sBLA will be reviewed under the FDA’s Accelerated Approval program.

In December 2016, the FDA accepted for review an sBLA for Keytruda
for the treatment of patients with refractory classical Hodgkin lymphoma or for
patients who have relapsed after three or more prior lines of therapy. The FDA granted Priority Review with a PDUFA action date of March 15, 2017. The sBLA
will be reviewed under the FDA’s Accelerated Approval program.

In November 2016, the FDA accepted for review an sBLA for Keytruda
, for the treatment of previously treated patients with advanced microsatellite
instability-high (MSI-H) cancer. The FDA granted Priority Review with a PDUFA action date of March 8, 2017. The sBLA will be reviewed under the FDA’s
Accelerated  Approval  program.  The  FDA recently  granted  Breakthrough  Therapy  designation  to  Keytruda
for unresectable  or metastatic  MSI-H non-colorectal
cancer, and previously granted it for the treatment of patients with unresectable or metastatic MSI-H colorectal cancer.

Additionally, Keytruda
has also received Breakthrough Therapy designation from the FDA for the treatment of patients with primary mediastinal B-cell

lymphoma that is refractory to or has relapsed after two prior lines of therapy.

The Keytruda
clinical development program consists of more than 400 clinical trials, including more than 200 trials that combine Keytruda
with other
cancer treatments. These studies encompass more than 30 cancer types including: bladder, colorectal, esophageal, gastric, head and neck, hepatocellular, Hodgkin
lymphoma, non-Hodgkin lymphoma, melanoma, multiple myeloma, nasopharyngeal, NSCLC, ovarian, prostate, renal and triple-negative breast, many of which
are currently in Phase 3 clinical development. Further trials are being planned for other cancers.

MK-1293 is an investigational follow-on biologic insulin glargine candidate for the treatment of patients with type 1 and type 2 diabetes under review

by the FDA. MK-1293 was approved in the EU in January 2017. MK-1293 is being developed in collaboration with and partially funded by Samsung Bioepis.

V419 is an investigational pediatric hexavalent combination vaccine, DTaP5-IPV-Hib-HepB, under review with the FDA that is being developed and, if
approved,  will  be  commercialized  through  a  partnership  between  Merck  and  Sanofi.  This  vaccine  is  designed  to  help  protect  against  six  important  diseases  -
diphtheria, tetanus, pertussis (whooping cough), polio (poliovirus types 1, 2, and 3), invasive disease caused by Haemophilus
influenzae
type b (Hib), and hepatitis
B.  On  November  2,  2015,  the  FDA  issued  a  CRL  with  respect  to  the  BLA  for  V419.  Both  companies  are  reviewing  the  CRL  and  plan  to  have  further
communication with the FDA. In February 2016, the EC granted marketing authorization for V419 for prophylaxis against diphtheria, tetanus, pertussis, hepatitis
B, poliomyelitis, and invasive disease caused by Hib, in infants and toddlers from the age of 6 weeks. V419 is being marketed as Vaxelis
in the EU.

In  addition  to  the  candidates  under  regulatory  review,  the  Company  has  several  drug  candidates  in  Phase  3  clinical  development  in  addition  to  the

Keytruda
programs discussed above.

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MK-8931, verubecestat, is an investigational small molecule inhibitor of the beta-site amyloid precursor protein cleaving enzyme 1 (BACE1) for the
treatment  of  Alzheimer’s  disease.  In  February  2017,  Merck  announced  that  its  external  Data  Monitoring  Committee  (eDMC)  recommended  termination  of  the
Phase  2/3  EPOCH  study  of  verubecestat  in  mild-to-moderate  Alzheimer’s  disease  based  on  the  low  probability  of  success  of  this  study.  The  same  eDMC
recommended that a separate Phase 3 study, APECS, evaluating verubecestat for amnestic mild cognitive impairment due to Alzheimer’s disease, also known as
prodromal Alzheimer’s disease, continue as planned. Estimated primary completion date for the APECS study, which is fully enrolled, is February 2019.

MK-0859, anacetrapib, is an investigational inhibitor of the cholesteryl ester transfer protein (CETP) in development for raising HDL-C and reducing
LDL-C.  Anacetrapib  is  being  evaluated  in  a  30,000  patient,  event-driven  cardiovascular  clinical  outcomes  trial  sponsored  by  Oxford  University,  REVEAL
(Randomized  EValuation  of  the  Effects  of  Anacetrapib  Through  Lipid-modification),  involving  patients  with  preexisting  vascular  disease.  In  November  2015,
Merck  announced  that  the  Data  Monitoring  Committee  (DMC)  of  the  REVEAL  outcomes  study  completed  its  planned  review  of  unblinded  study  data  and
recommended the study continue with no changes. The DMC reviewed safety and efficacy data from the study, which included an assessment of futility. Merck
remains blinded to the actual results of this analysis and to other REVEAL safety and efficacy data. Under the study, the last patient’s last visit occurred in January
2017. The Company anticipates receiving the top-line results from the study mid-year 2017.

MK-7655A is a combination of relebactam, an investigational beta-lactamase inhibitor, and imipenem/cilastatin (an approved carbapenem antibiotic).
The  FDA  has  designated  this  combination  a  QIDP  with  designated  Fast  Track  status  for  the  treatment  of  hospital-acquired  bacterial  pneumonia,  ventilator-
associated bacterial pneumonia, complicated intra-abdominal infections and complicated urinary tract infections.

MK-8228,  letermovir,  is  an  investigational  oral  once-daily  or  an  intravenous  infusion  antiviral  candidate  for  the  prevention  of  clinically-significant
cytomegalovirus  (CMV)  infection.  Letermovir  has  received  Orphan  Drug  Status  in  the  EU  and  in  the  United  States,  where  it  has  also  been  granted  Fast  Track
designation. In October 2016, Merck announced that the pivotal Phase 3 clinical study of letermovir met its primary endpoint. The global, multicenter, randomized,
placebo-controlled study evaluated the efficacy and safety of letermovir in adult (18 years and older) CMV-seropositive recipients of an allogeneic hematopoietic
stem cell transplant. Merck plans to submit regulatory applications for the approval of letermovir in the United States and EU in 2017.

MK-8835, ertugliflozin, is an investigational oral SGLT2 inhibitor being evaluated for the treatment of type 2 diabetes in collaboration with Pfizer Inc.
(Pfizer). In September 2016, Merck and Pfizer announced that a Phase 3 study (VERTIS SITA2) of ertugliflozin met its primary endpoint. Both 5 mg and 15 mg
daily doses of ertugliflozin showed significantly greater reductions in A1C (an average measure of blood glucose over the past two to three months) when added to
patients on a background of sitagliptin and metformin. Ertugliflozin is also being studied in combination with Januvia
(sitagliptin) and metformin. In December
2016,  Merck  submitted  NDAs  to  the  FDA  for  ertugliflozin  and  the  two  fixed-dose  combinations:  MK-8835A,  ertugliflozin  plus  Januvia
 ,  and  MK-8835B,
ertugliflozin plus metformin. The Company anticipates a response from the FDA in the first quarter of 2017. Ertugliflozin and the two fixed-dose combinations are
currently under review in the EU.

MK-0431J  is  an  investigational  fixed-dose  combination  of  sitagliptin  and  ipragliflozin  under  development  for  commercialization  in  Japan  in
collaboration with Astellas Pharma Inc. (Astellas). Ipragliflozin, an SGLT2 inhibitor, co-developed by Astellas and Kotobuki Pharmaceutical Co., Ltd. (Kotobuki),
is approved for use in Japan and is being co-promoted with Merck and Kotobuki.

V920 is an investigational rVSV-ZEBOV (Ebola) vaccine candidate being studied in large scale Phase 2/3 clinical trials. In November 2014, Merck and
NewLink Genetics announced an exclusive licensing and collaboration agreement for the investigational Ebola vaccine. In December 2015, Merck announced that
the application for Emergency Use Assessment and Listing (EUAL) for V920 was accepted for review by the World Health Organization (WHO). According to the
WHO, the EUAL process is designed to expedite the availability of vaccines needed for public health emergencies such as another outbreak of Ebola. The decision
to grant V920 EUAL status will be based on data regarding quality, safety, and efficacy/effectiveness; as well as a risk/benefit analysis for emergency use. While
EUAL designation allows for emergency use, the vaccine remains investigational and has not yet been licensed for commercial distribution. In July 2016, Merck
announced that the FDA granted V920 Breakthrough Therapy designation, and that the EMA granted the vaccine candidate PRIME (PRIority MEdicines) status. In
December 2016, end of study results from the WHO ring vaccination trial were reported in Lancet supporting the July 2015 interim assessment that

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Table of Contents

V920  offers  substantial  protection  against  Ebola  virus  disease,  with  no  reported  cases  among  vaccinated  individuals  from  10  days  after  vaccination  in  both
randomized and non-randomized clusters. Results from other ongoing studies are anticipated in the second half of 2017.

MK-1242, vericiguat, is an investigational treatment for heart failure being studied in a Phase 3 clinical trial in patients suffering from chronic heart

failure. The development of vericiguat is part of a worldwide strategic collaboration between Merck and Bayer AG.

V212 is an inactivated varicella zoster virus (VZV) vaccine in development for the prevention of herpes zoster. The Company completed the Phase 3
trial  in  autologous  hematopoietic  cell  transplant  patients  and  is  conducting  another  Phase  3  trial  in  patients  with  solid  tumor  malignancies  undergoing
chemotherapy and hematological malignancies. The study in autologous hematopoietic cell transplant patients met its primary endpoints and Merck presented the
results from this study at the American Society for Blood and Marrow Transplantation Meetings in February 2017.

MK-1439,  doravirine,  is  an  investigational  non-nucleoside  reverse  transcriptase  inhibitor  being  developed  by  Merck  for  the  treatment  of  HIV-1
infection. In February 2017, the Company received positive results from a first Phase 3 study showing that doravirine was non-inferior to an alternative regimen in
achieving and maintaining HIV-1 suppression in infected adults during 48 weeks of treatment.

In 2016, the Company also divested or discontinued certain drug candidates.

Merck announced that it is discontinuing the development of odanacatib, an investigational  cathepsin K inhibitor for osteoporosis, and will not seek
regulatory  approval  for  its  use.  Merck  previously  reported  a  numeric  imbalance  in  adjudicated  stroke  events  in  the  pivotal  Phase  3  fracture  outcomes  study  in
postmenopausal women. The Company has decided to discontinue development after an independent adjudication and analysis of major adverse cardiovascular
events confirmed an increased risk of stroke.

The Company determined that, for business reasons, it would terminate the North America partnership agreement with ALK-Abelló that included MK-
8237,  an  investigational  allergy  immunotherapy  tablet  for  house  dust  mite  allergy.  Merck  has  given  ALK-Abelló  six  months’  notice  that  it  is  terminating  the
agreement and therefore this compound will be returned to ALK-Abelló. This decision was not due to efficacy or safety concerns.

The Company also decided, for business reasons, to discontinue the clinical development of MK-8342B, referred to as the Next Generation Ring, an
investigational  combination (etonogestrel  and 17ß-estradiol)  vaginal ring for contraception  and the treatment  of dysmenorrhea in women seeking contraception.
This decision was not due to efficacy or safety concerns.

Merck  announced  that,  for  business  reasons,  it  will  not  proceed  with  submitting  marketing  applications  for  omarigliptin,  an  investigational,  once-

weekly DPP-4 inhibitor, in the United States or Europe. This decision did not result from concerns about the efficacy or safety of omarigliptin.

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Table of Contents

The chart below reflects the Company’s research pipeline as of February 24, 2017. Candidates shown in Phase 3 include specific products and the date
such  candidate  entered  into  Phase  3  development.  Candidates  shown  in  Phase  2  include  the  most  advanced  compound  with  a  specific  mechanism  or,  if  listed
compounds have the same mechanism, they are each currently intended for commercialization in a given therapeutic area. Small molecules and biologics are given
MK-number designations and vaccine candidates are given V-number designations. Except as otherwise noted, candidates in Phase 1, additional indications in the
same therapeutic area (other than with respect to Keytruda
) and additional claims, line extensions or formulations for in-line products are not shown.

Phase 2

Phase 3 (Phase 3 entry date)

Under Review

Asthma

MK-1029

Cancer

MK-3475 Keytruda

PMBCL (Primary Mediastinal
Large B-Cell Lymphoma)

Advanced Solid Tumors
Nasopharyngeal
Ovarian
Prostate
MK-2206

Cough, including cough with IPF

MK-7264

Diabetes Mellitus

MK-8521
Hepatitis C

MK-3682B (MK-3682 (uprifosbuvir)/MK-5172

(grazoprevir)/MK-8408 (ruzasvir))

Pneumoconjugate Vaccine

V114

Alzheimer’s Disease

MK-8931 (verubecestat) (December 2013)

Atherosclerosis

MK-0859 (anacetrapib) (May 2008)

Bacterial Infection

MK-7655A (relebactam+imipenem/cilastatin)

(October 2015)

Cancer

MK-3475 Keytruda

Bladder (October 2014) (EU)
Breast (October 2015)
Colorectal (November 2015)
Esophageal (December 2015)
Gastric (May 2015)
Head and Neck (November 2014) (EU)
Hepatocellular (May 2016)
Hodgkin Lymphoma (July 2016) (EU)
Multiple Myeloma (December 2015)
Renal (October 2016)

CMV Prophylaxis in Transplant Patients

MK-8228 (letermovir) (June 2014)

Diabetes Mellitus

MK-8835 (ertugliflozin) (November 2013)

(U.S.) (1)

MK-8835A (ertugliflozin+sitagliptin)

(September 2015) (U.S.) ( 1)

MK-8835B (ertugliflozin+metformin)

(August 2015) (U.S.) (1)

MK-0431J (sitagliptin+ipragliflozin)

(October 2015) (Japan) (1)

Ebola Vaccine

V920 (March 2015)

Heart Failure

MK-1242 (vericiguat) (September 2016) (1)

Herpes Zoster

V212 (inactivated VZV vaccine) (December 2010)

HIV

MK-1439 (doravirine) (December 2014)

New Molecular Entities/Vaccines
Allergy

MK-8237, House Dust Mite (U.S.) (2)

Diabetes Mellitus

MK-1293 (U.S.) (1)
MK-8835 (ertugliflozin) (EU) (1)
MK-8835A (ertugliflozin+sitagliptin) (EU) ( 1)
MK-8835B (ertugliflozin+metformin) (EU) (1)

Pediatric Hexavalent Combination Vaccine

V419 (U.S.) (3)

Certain Supplemental Filings
Cancer
Keytruda
• Previously Treated Microsatellite Instability-High Cancer (U.S.)
• Relapsed or Refractory Classical Hodgkin Lymphoma (U.S.)
• Combination with Chemotherapy in first-line non-squamous Non-Small-

Cell Lung Cancer (U.S.)

• First Line Cis-ineligible Bladder Cancer (U.S.)
• Second Line Metastatic Bladder Cancer (U.S.)

Footnotes:
(1)
Being developed in a collaboration.
(2)
  MK-8237 was being developed as part of a North America partnership
with ALK-Abelló. Merck has given ALK-Abelló six months’ notice
that it is terminating the agreement and, therefore, this compound will
be returned to ALK-Abelló.

(3)
  V419 is an investigational pediatric hexavalent combination vaccine, DTaP5-

IPV-Hib-HepB, that is being developed and, if approved, will be
commercialized through a partnership of Merck and Sanofi. On November 2,
2015, the FDA issued a CRL with respect to V419. Both companies are
reviewing the CRL and plan to have further communication with the FDA.

Employees

As of December 31, 2016, the Company had approximately 68,000 employees worldwide, with approximately 26,500 employed in the United States,

including Puerto Rico. Approximately 29% of worldwide employees of the Company are represented by various collective bargaining groups.

Restructuring
Activities

The Company incurs substantial costs for restructuring program activities related to Merck’s productivity and cost reduction initiatives, as well as in
connection with the integration of certain acquired businesses. In 2010 and 2013, the Company commenced actions under global restructuring programs designed
to streamline its cost structure. The actions under these programs include the elimination of positions in sales, administrative and headquarters organizations, as
well as the sale or closure of certain manufacturing and research and development sites and the consolidation of office facilities. The Company also continues to
reduce its global real estate footprint and improve the efficiency of its manufacturing and supply network. The non-facility related restructuring actions under these
programs  are  substantially  complete;  the  remaining  activities  primarily  relate  to  ongoing  facility  rationalizations.  Since  inception  of  the  programs  through
December 31, 2016, Merck has eliminated approximately 40,900 positions comprised of

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employee separations, as well as the elimination of contractors and vacant positions. The Company expects to substantially complete the remaining actions under
these programs by the end of 2017.

Environmental Matters

The Company believes that there are no compliance issues associated with applicable environmental laws and regulations that would have a material
adverse  effect  on  the  Company.  The  Company  is  also  remediating  environmental  contamination  resulting  from  past  industrial  activity  at  certain  of  its  sites.
Expenditures for remediation and environmental liabilities were $11 million in 2016 , and are estimated at $44 million in the aggregate for the years 2017 through
2021 . These amounts do not consider potential recoveries from other parties. The Company has taken an active role in identifying and accruing for these costs and,
in management’s opinion, the liabilities for all environmental matters that are probable and reasonably estimable have been accrued and totaled $83 million and
$109 million at December 31, 2016 and 2015 , respectively. Although it is not possible to predict with certainty the outcome of these matters, or the ultimate costs
of remediation, management does not believe that any reasonably possible expenditures that may be incurred in excess of the liabilities accrued should exceed $64
million in the aggregate.  Management  also does not believe  that  these  expenditures  should have a material  adverse  effect  on the Company’s financial  position,
results of operations, liquidity or capital resources for any year.

Merck believes that climate change could present risks to its business. Some of the potential impacts of climate change to its business include increased
operating costs due to additional regulatory requirements, physical risks to the Company’s facilities, water limitations and disruptions to its supply chain. These
potential  risks  are  integrated  into  the  Company’s  business  planning  including  investment  in  reducing  energy,  water  use  and  greenhouse  gas  emissions.  The
Company does not believe these risks are material to its business at this time.

Geographic Area Information

The Company’s operations outside the United States are conducted primarily through subsidiaries. Sales worldwide by subsidiaries outside the United

States as a percentage of total Company sales were 54% of sales in 2016, 56% of sales in 2015 and 60% of sales in 2014.

The Company’s worldwide business is subject to risks of currency fluctuations, governmental actions and other governmental proceedings abroad. The
Company does not regard these risks as a deterrent to further expansion of its operations abroad. However, the Company closely reviews its methods of operations
and adopts strategies responsive to changing economic and political conditions.

Merck has operations in countries located in Latin America, the Middle East, Africa, Eastern Europe and Asia Pacific. Business in these developing

areas, while sometimes less stable, offers important opportunities for growth over time.

Financial information about geographic areas of the Company’s business is provided in Item 8. “Financial Statements and Supplementary Data” below.

Available Information

The Company’s Internet website address is www.merck.com
.
The Company will make available, free of charge at the “Investors” portion of its website,
its Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and all amendments to those reports filed or furnished pursuant
to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, as soon as reasonably practicable after such reports are electronically filed with, or
furnished to, the U.S. Securities and Exchange Commission (SEC). In addition, the Company will provide without charge a copy of its Annual Report on Form 10-
K, including financial statements and schedules, upon the written request of any shareholder to Merck Shareholder Services, Merck & Co., Inc., 2000 Galloping
Hill Road, K1-3049, Kenilworth, NJ 07033 U.S.A.

The Company’s corporate governance guidelines and the charters of the Board of Directors’ four standing committees are available on the Company’s

website at www.merck.com/about/leadership
and all such information is available in print to any stockholder who requests it from the Company.

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Item 1A. Risk Factors.

Investors should carefully consider all of the information set forth in this Form 10-K, including the following risk factors, before deciding to invest in
any  of  the  Company’s  securities.  The  risks  below  are  not  the  only  ones  the  Company  faces.  Additional  risks  not  currently  known  to  the  Company  or  that  the
Company  presently  deems  immaterial  may  also  impair  its  business  operations.  The  Company’s  business,  financial  condition,  results  of  operations  or  prospects
could be materially adversely affected by any of these risks. This Form 10-K also contains forward-looking statements that involve risks and uncertainties. The
Company’s  results  could  materially  differ  from  those  anticipated  in  these  forward-looking  statements  as  a  result  of  certain  factors,  including  the  risks  it  faces
described below and elsewhere. See “Cautionary Factors that May Affect Future Results” below.

The  Company  is  dependent  on  its  patent  rights,  and  if  its  patent  rights  are  invalidated  or  circumvented,  its  business  would  be  adversely

affected.

Patent  protection  is  considered,  in  the  aggregate,  to  be  of  material  importance  to  the  Company’s  marketing  of  human  health  products  in  the  United
States  and  in  most  major  foreign  markets.  Patents  covering  products  that  it  has  introduced  normally  provide  market  exclusivity,  which  is  important  for  the
successful marketing and sale of its products. The Company seeks patents covering each of its products in each of the markets where it intends to sell the products
and where meaningful patent protection is available.

Even if the Company succeeds in obtaining patents covering its products, third parties or government authorities may challenge or seek to invalidate or
circumvent its patents and patent applications. It is important for the Company’s business to defend successfully the patent rights that provide market exclusivity
for  its  products.  The  Company  is  often  involved  in  patent  disputes  relating  to  challenges  to  its  patents  or  claims  by  third  parties  of  infringement  against  the
Company. The Company defends its patents both within and outside the United States, including by filing claims of infringement against other parties. See Item 8.
“Financial  Statements  and  Supplementary  Data,”  Note  10.  “Contingencies  and  Environmental  Liabilities”  below.  In  particular,  manufacturers  of  generic
pharmaceutical  products  from  time  to  time  file  Abbreviated  NDAs  with  the  FDA  seeking  to  market  generic  forms  of  the  Company’s  products  prior  to  the
expiration of relevant patents owned or licensed by the Company. The Company normally responds by defending its patent, including by filing lawsuits alleging
patent  infringement.  Patent  litigation  and  other  challenges  to  the  Company’s  patents  are  costly  and  unpredictable  and  may  deprive  the  Company  of  market
exclusivity for a patented product or, in some cases, third-party patents may prevent the Company from marketing and selling a product in a particular geographic
area.

Additionally, certain foreign governments have indicated that compulsory licenses to patents may be granted in the case of national emergencies or in
other circumstances, which could diminish or eliminate sales and profits from those regions and negatively affect the Company’s results of operations. Further,
court  decisions  relating  to  other  companies’  patents,  potential  legislation  relating  to  patents,  as  well  as  regulatory  initiatives  may  result  in  a  more  general
weakening of intellectual property protection.

If one or more important products lose patent protection in profitable markets, sales of those products are likely to decline significantly as a result of
generic versions of those products becoming available and, in the case of certain products, such a loss could result in a material non-cash impairment charge. The
Company’s  results  of  operations  may  be  adversely  affected  by  the  lost  sales  unless  and  until  the  Company  has  successfully  launched  commercially  successful
replacement products.

A chart listing the patent protection for certain of the Company’s marketed products, and U.S. patent protection for candidates under review and Phase

3 candidates is set forth above in Item 1. “Business — Patents, Trademarks and Licenses.”

As  the  Company’s  products  lose  market  exclusivity,  the  Company  generally  experiences  a  significant  and  rapid  loss  of  sales  from  those

products.

The Company depends upon patents to provide it with exclusive marketing rights for its products for some period of time. Loss of patent protection for
one  of  the  Company’s  products  typically  leads  to  a  significant  and  rapid  loss  of  sales  for  that  product,  as  lower  priced  generic  versions  of  that  drug  become
available.  In  the  case  of  products  that  contribute  significantly  to  the  Company’s  sales,  the  loss  of  market  exclusivity  can  have  a  material  adverse  effect  on  the
Company’s business, cash flow, results of operations, financial position and prospects. For example, pursuant

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to  an  agreement  with  a  generic  manufacturer,  that  manufacturer  launched  in  the  United  States  a  generic  version  of  Zetia
in  December  2016.  In  addition,  the
Company will lose U.S. patent protection for Vytorin
in April 2017. The Company expects a significant and rapid loss of sales of Zetia
and Vytorin
in the United
States in 2017.

Key products generate a significant amount of the Company’s profits and cash flows, and any events that adversely affect the markets for its

leading products could have a material and negative impact on results of operations and cash flows.

The Company’s ability to generate profits and operating cash flow depends largely upon the continued profitability of the Company’s key products,
such as Januvia
, Janumet
, Keytruda
, Gardasil/Gardasil
9, Isentress
and Zepatier
. As a result of the Company’s dependence on key products, any event that
adversely affects any of these products or the markets for any of these products could have a significant adverse impact on results of operations and cash flows.
These  events  could  include  loss  of  patent  protection,  increased  costs  associated  with  manufacturing,  generic  or  over-the-counter  availability  of  the  Company’s
product or a competitive product, the discovery of previously unknown side effects, results of post-approval trials, increased competition from the introduction of
new, more effective treatments and discontinuation or removal from the market of the product for any reason. Such events could have a material adverse effect on
the sales of any such products.

The Company’s research and development efforts may not succeed in developing commercially successful products and the Company may not
be able to acquire commercially successful products in other ways; in consequence, the Company may not be able to replace sales of successful products
that have lost patent protection.

Like other major pharmaceutical companies, in order to remain competitive, the Company must continue to launch new products each year. Expected
declines in sales of products after the loss of market exclusivity mean that the Company’s future success is dependent on its pipeline of new products, including
new products which it may develop through joint ventures and products which it is able to obtain through license or acquisition. To accomplish this, the Company
commits substantial effort, funds and other resources to research and development, both through its own dedicated resources and through various collaborations
with third parties. There is a high rate of failure inherent in the research and development process for new drugs. As a result, there is a high risk that funds invested
by the Company in research programs will not generate financial returns. This risk profile is compounded by the fact that this research has a long investment cycle.
To bring a pharmaceutical compound from the discovery phase to market may take a decade or more and failure can occur at any point in the process, including
later in the process after significant funds have been invested.

For a description of the research and development process, see Item 1. “Business — Research and Development” above. Each phase of testing is highly
regulated and during each phase there is a substantial risk that the Company will encounter serious obstacles or will not achieve its goals, therefore, the Company
may abandon a product in which it has invested substantial amounts of time and resources. Some of the risks encountered in the research and development process
include the following: pre-clinical testing of a new compound may yield disappointing results; competing products from other manufacturers may reach the market
first; clinical trials of a new drug may not be successful; a new drug may not be effective or may have harmful side effects; a new drug may not be approved by the
regulators for its intended use; it may not be possible to obtain a patent for a new drug; payers may refuse to cover or reimburse the new product; or sales of a new
product may be disappointing.

The Company cannot state with certainty when or whether any of its products now under development will be approved or launched; whether it will be
able to develop, license or otherwise acquire compounds, product candidates or products; or whether any products, once launched, will be commercially successful.
The Company must maintain a continuous flow of successful new products and successful new indications or brand extensions for existing products sufficient both
to  cover  its  substantial  research  and  development  costs  and  to  replace  sales  that  are  lost  as  profitable  products  lose  market  exclusivity  or  are  displaced  by
competing  products  or  therapies.  Failure  to  do  so  in  the  short  term  or  long  term  would  have  a  material  adverse  effect  on  the  Company’s  business,  results  of
operations, cash flow, financial position and prospects.

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The Company’s success is dependent on the successful development and marketing of new products, which are subject to substantial risks.

Products that appear promising in development may fail to reach the market or fail to succeed for numerous reasons, including the following:

•

•

•

•

•

findings of ineffectiveness, superior safety or efficacy of competing products, or harmful side effects in clinical or pre-clinical testing;

failure to receive the necessary regulatory approvals, including delays in the approval of new products and new indications, and uncertainties about
the  time  required  to  obtain  regulatory  approvals  and  the  benefit/risk  standards  applied  by  regulatory  agencies  in  determining  whether  to  grant
approvals;

failure in certain markets to obtain reimbursement commensurate with the level of innovation and clinical benefit presented by the product;

lack of economic feasibility due to manufacturing costs or other factors; and

preclusion from commercialization by the proprietary rights of others.

In the future, if certain pipeline programs are cancelled or if the Company believes that their commercial prospects have been reduced, the Company

may recognize material non-cash impairment charges for those programs that were measured at fair value and capitalized in connection with acquisitions.

Failure  to  successfully  develop  and  market  new  products  in  the  short  term  or  long  term  would  have  a  material  adverse  effect  on  the  Company’s

business, results of operations, cash flow, financial position and prospects.

The  Company’s  products,  including  products  in  development,  cannot  be  marketed  unless  the  Company  obtains  and  maintains  regulatory

approval.

The Company’s activities, including research, preclinical testing, clinical trials and manufacturing and marketing its products, are subject to extensive
regulation by numerous federal, state and local governmental authorities in the United States, including the FDA, and by foreign regulatory authorities, including in
the  EU.  In  the  United  States,  the  FDA  is  of  particular  importance  to  the  Company,  as  it  administers  requirements  covering  the  testing,  approval,  safety,
effectiveness, manufacturing, labeling and marketing of prescription pharmaceuticals. In many cases, the FDA requirements have increased the amount of time and
money necessary to develop new products and bring them to market in the United States. Regulation outside the United States also is primarily focused on drug
safety and effectiveness and, in many cases, cost reduction. The FDA and foreign regulatory authorities have substantial discretion to require additional testing, to
delay or withhold registration and marketing approval and to otherwise preclude distribution and sale of a product.

Even if the Company is successful in developing new products, it will not be able to market any of those products unless and until it has obtained all
required regulatory approvals in each jurisdiction where it proposes to market the new products. Once obtained, the Company must maintain approval as long as it
plans  to  market  its  new  products  in  each  jurisdiction  where  approval  is  required.  The  Company’s  failure  to  obtain  approval,  significant  delays  in  the  approval
process, or its failure to maintain approval in any jurisdiction will prevent it from selling the new products in that jurisdiction until approval is obtained, if ever.
The Company would not be able to realize revenues for those new products in any jurisdiction where it does not have approval.

Developments following regulatory approval may adversely affect sales of the Company’s products.

Even  after  a  product  reaches  market,  certain  developments  following  regulatory  approval,  including  results  in  post-approval  Phase  4  trials  or  other

studies, may decrease demand for the Company’s products, including the following:

•

•

the re-review of products that are already marketed;

the recall or loss of marketing approval of products that are already marketed;

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•

•

changing government standards or public expectations regarding safety, efficacy or labeling changes; and

greater scrutiny in advertising and promotion.

In  the  past  several  years,  clinical  trials  and  post-marketing  surveillance  of  certain  marketed  drugs  of  the  Company  and  of  competitors  within  the
industry  have  raised  concerns  that  have  led  to  recalls,  withdrawals  or  adverse  labeling  of  marketed  products.  Clinical  trials  and  post-marketing  surveillance  of
certain marketed drugs also have raised concerns among some prescribers and patients relating to the safety or efficacy of pharmaceutical products in general that
have  negatively  affected  the  sales  of  such  products.  In  addition,  increased  scrutiny  of  the  outcomes  of  clinical  trials  has  led  to  increased  volatility  in  market
reaction. Further, these matters often attract litigation and, even where the basis for the litigation is groundless, considerable resources may be needed to respond.

In addition, following the wake of product withdrawals and other significant safety issues, health authorities such as the FDA, the EMA and Japan’s
Pharmaceutical and Medical Device Agency have increased their focus on safety when assessing the benefit/risk balance of drugs. Some health authorities appear
to have become  more  cautious  when making  decisions  about approvability  of new products or indications  and are re-reviewing  select  products  that are  already
marketed, adding further to the uncertainties in the regulatory processes. There is also greater regulatory scrutiny, especially in the United States, on advertising
and promotion and, in particular, direct-to-consumer advertising.

If previously unknown side effects are discovered or if there is an increase in negative publicity regarding known side effects of any of the Company’s
products, it could significantly reduce demand for the product or require the Company to take actions that could negatively affect sales, including removing the
product from the market, restricting its distribution or applying for labeling changes. Further, in the current environment in which all pharmaceutical companies
operate, the Company is at risk for product liability and consumer protection claims and civil and criminal governmental actions related to its products, research
and/or marketing activities.

The Company faces intense competition from lower cost-generic products.

In  general,  the  Company  faces  increasing  competition  from  lower-cost  generic  products.  The  patent  rights  that  protect  its  products  are  of  varying
strengths and durations. In addition, in some countries, patent protection is significantly weaker than in the United States or in the EU. In the United States and the
EU,  political  pressure  to  reduce  spending  on  prescription  drugs  has  led  to  legislation  and  other  measures  which  encourages  the  use  of  generic  and  biosimilar
products. Although it is the Company’s policy to actively protect its patent rights, generic challenges to the Company’s products can arise at any time, and the
Company’s patents may not prevent the emergence of generic competition for its products.

Loss of patent protection for a product typically is followed promptly by generic substitutes, reducing the Company’s sales of that product. Availability
of generic substitutes for the Company’s drugs may adversely affect its results of operations and cash flow. In addition, proposals emerge from time to time in the
United States and other countries for legislation to further encourage the early and rapid approval of generic drugs. Any such proposal that is enacted into law could
worsen this substantial negative effect on the Company’s sales and, potentially, its business, cash flow, results of operations, financial position and prospects.

The Company faces intense competition from competitors’ products which, in addition to other factors, could in certain circumstances lead to

non-cash impairment charges.

The Company’s products face intense competition from competitors’ products. This competition may increase as new products enter the market. In such
an event, the competitors’ products may be safer or more effective, more convenient to use or more effectively marketed and sold than the Company’s products.
Alternatively,  in  the  case  of  generic  competition,  including  the  generic  availability  of  competitors’  branded  products,  they  may  be  equally  safe  and  effective
products that are sold at a substantially lower price than the Company’s products. As a result, if the Company fails to maintain its competitive position, this could
have a material adverse effect on its business, cash flow, results of operations, financial position and prospects. In addition, if products that were measured at fair
value and capitalized in connection with acquisitions experience difficulties in the market that negatively impact product cash flows, the Company may recognize
material non-cash impairment charges with respect to the value of those products.

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The Company faces pricing pressure with respect to its products.

The Company faces increasing pricing pressure globally and, particularly in mature markets, from managed care organizations, government agencies
and programs that could negatively affect the Company’s sales and profit margins. In the United States, these include (i) practices of managed care groups and
institutional  and  governmental  purchasers,  (ii)  U.S.  federal  laws  and  regulations  related  to  Medicare  and  Medicaid,  including  the  Medicare  Prescription  Drug
Improvement  and  Modernization  Act  of  2003  and  the  ACA,  and  (iii)  state  activities  aimed  at  increasing  price  transparency.  Changes  to  the  health  care  system
enacted as part of health care reform in the United States, as well as increased purchasing power of entities that negotiate on behalf of Medicare, Medicaid, and
private sector beneficiaries, could result in further pricing pressures. In addition, in the U.S., larger customers may, in the future, ask for and receive higher rebates
on drugs in certain highly competitive  categories. The Company must also compete to be placed on formularies  of managed care organizations. Exclusion of a
product from a formulary can lead to reduced usage in the managed care organization.

In  order  to  provide  information  about  the  Company’s  pricing  practices,  the  Company  recently  posted    on  its  website  its  first  Pricing  Action
Transparency Report for the United States for the years 2010 - 2016. The report provides the Company’s average annual list price and net price increases across the
Company’s U.S. portfolio dating back to 2010.  The report shows that the Company’s average annual net price increases (after taking sales deductions such as
rebates, discounts and returns into account) across the U.S. human health portfolio have been in the low to mid-single digits since 2010.  Additionally, the weighted
average annual discount rate has been steadily increasing over time, reflecting the competitive market for branded medicines and the impact of the ACA. In 2016,
the Company’s gross U.S. sales were reduced by 40.9% as a result of rebates, discounts and returns.

Outside the United States, numerous major markets, including the EU and Japan, have pervasive government involvement in funding health care and, in
that  regard,  fix the  pricing  and reimbursement  of pharmaceutical  and vaccine  products.  Consequently,  in those markets,  the Company  is subject  to government
decision making and budgetary actions with respect to its products.

The Company expects pricing pressures to increase in the future.

The health care industry in the United States will continue to be subject to increasing regulation and political action.

The Company believes that the health care industry will continue to be subject to increasing regulation as well as political and legal action, as future

proposals to reform the health care system are considered by Congress and state legislatures.

In 2010, the United States enacted major health care reform legislation in the form of the ACA. Various insurance market reforms have advanced and
state and federal insurance exchanges were launched in 2014. With respect to the effect of the law on the pharmaceutical industry, the law increased the mandated
Medicaid rebate from 15.1% to 23.1%, expanded the rebate to Medicaid managed care utilization, and increased the types of entities eligible for the federal 340B
drug discount program.

The  law  also  requires  pharmaceutical  manufacturers  to  pay  a  50%  point  of  service  discount  to  Medicare  Part  D  beneficiaries  when  they  are  in  the
Medicare Part D coverage gap (i.e., the so-called “donut hole”). Also, pharmaceutical manufacturers are now required to pay an annual non-tax deductible health
care reform fee. The total annual industry fee was $3.0 billion in 2016 and will increase to $4.0 billion in 2017. The fee is assessed on each company in proportion
to its share of prior year branded pharmaceutical sales to certain government programs, such as Medicare and Medicaid.

On January 21, 2016, the Centers for Medicare & Medicaid Services (CMS) issued the Medicaid rebate final rule that implements provisions of the
ACA effective April 1, 2016. The rule provides comprehensive guidance on the calculation of Average Manufacturer Price and Best Price; two metrics utilized to
determine  the  rebates  drug  manufacturers  are  required  to  pay  to  state  Medicaid  programs.  The  impact  of  changes  resulting  from  the  issuance  of  the  rule  is  not
material to Merck, at this time. However, the Company is still awaiting guidance from CMS on two aspects of the rule that were deferred for later implementation.
These  include  a  definition  of  what  constitutes  a  product  ‘line  extension’  and  a  delay  in  the  participation  of  the  U.S.  Territories  in  the  Medicaid  Drug  Rebate
Program until April 1, 2020. The Company will evaluate the financial impact of these two elements when they become effective.

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The Company cannot predict the likelihood of future changes in the health care industry in general, or the pharmaceutical industry in particular, or what

impact they may have on the Company’s results of operations, financial condition or business.

Changes in laws and regulations could materially adversely affect the Company’s business.

All  aspects  of  the  Company’s  business,  including  research  and  development,  manufacturing,  marketing,  pricing,  sales,  litigation  and  intellectual
property  rights,  are  subject  to  extensive  legislation  and  regulation.  Changes  in  applicable  federal  and  state  laws  and  agency  regulations  could  have  a  material
adverse effect on the Company’s business.

In  particular,  there  is  significant  uncertainty  about  the  future  of  the  ACA  and  healthcare  laws  in  general  in  the  United  States.  The  Company  is
participating in the debate and monitoring how any proposed changes could affect its business. The Company is unable to predict the likelihood of changes to the
ACA.  Depending  on  the  nature  of  any  repeal  and  replacement  of  the  ACA,  such  actions  could  have  a  material  adverse  effect  on  the  Company’s  results  of
operations, financial condition or business.

The uncertainty in global economic conditions together with austerity measures being taken by certain governments could negatively affect the

Company’s operating results.

The uncertainty in global economic conditions may result in a further slowdown to the global economy that could affect the Company’s business by
reducing the prices that drug wholesalers and retailers, hospitals, government agencies and managed health care providers may be able or willing to pay for the
Company’s products or by reducing the demand for the Company’s products, which could in turn negatively impact the Company’s sales and result in a material
adverse effect on the Company’s business, cash flow, results of operations, financial position and prospects.

Global  efforts  toward  health  care  cost  containment  continue  to  exert  pressure  on  product  pricing  and  market  access.  In  many  international  markets,
government-mandated pricing actions have reduced prices of generic and patented drugs. In addition, other austerity measures negatively affected the Company’s
revenue performance in 2016. The Company anticipates these pricing actions and other austerity measures will continue to negatively affect revenue performance
in 2017.

If  credit  and  economic  conditions  worsen,  the  resulting  economic  and  currency  impacts  in  the  affected  markets  and  globally  could  have  a  material

adverse effect on the Company’s results.

The  Company  has  significant  global  operations,  which  expose  it  to  additional  risks,  and  any  adverse  event  could  have  a  material  negative

impact on the Company’s results of operations.

The extent of the Company’s operations outside the United States is significant. Risks inherent in conducting a global business include:

•

changes in medical reimbursement policies and programs and pricing restrictions in key markets;

• multiple regulatory requirements that could restrict the Company’s ability to manufacture and sell its products in key markets;

•

•

•

•

trade protection measures and import or export licensing requirements;

foreign exchange fluctuations;

diminished protection of intellectual property in some countries; and

possible nationalization and expropriation.

In  addition,  there  may  be  changes  to  the  Company’s  business  and  political  position  if  there  is  instability,  disruption  or  destruction  in  a  significant
geographic region, regardless of cause, including war, terrorism, riot, civil insurrection or social unrest; and natural or man-made disasters, including famine, flood,
fire, earthquake, storm or disease.

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Failure to attract and retain highly qualified personnel could affect its ability to successfully develop and commercialize products.

The  Company’s  success  is  largely  dependent  on  its  continued  ability  to  attract  and  retain  highly  qualified  scientific,  technical  and  management
personnel, as  well  as  personnel with  expertise  in  clinical  research  and  development, governmental  regulation  and  commercialization.  Competition  for  qualified
personnel in the pharmaceutical industry is intense. The Company cannot be sure that it will be able to attract and retain quality personnel or that the costs of doing
so will not materially increase.

In the past, the Company has experienced difficulties and delays in manufacturing of certain of its products.

Merck has, in the past, experienced difficulties in manufacturing certain of its vaccines and other products. The Company may, in the future, experience
difficulties and delays inherent in manufacturing its products, such as (i) failure of the Company or any of its vendors or suppliers to comply with Current Good
Manufacturing  Practices  and  other  applicable  regulations  and  quality  assurance  guidelines  that  could  lead  to  manufacturing  shutdowns,  product  shortages  and
delays in product manufacturing; (ii) construction delays related to the construction of new facilities or the expansion of existing facilities, including those intended
to support future demand for the Company’s products; and (iii) other manufacturing or distribution problems including changes in manufacturing production sites
and limits to manufacturing capacity due to regulatory requirements, changes in types of products produced, or physical limitations that could impact continuous
supply. Manufacturing difficulties can result in product shortages, leading to lost sales and reputational harm to the Company.

The Company may not be able to realize the expected benefits of its investments in emerging markets.

The Company has been taking steps to increase its sales in emerging markets. However, there is no guarantee that the Company’s efforts to expand
sales in these markets will succeed. Some countries within emerging markets may be especially vulnerable to periods of global financial instability or may have
very  limited  resources  to  spend  on  health  care.  In  order  for  the  Company  to  successfully  implement  its  emerging  markets  strategy,  it  must  attract  and  retain
qualified personnel. The Company may also be required to increase its reliance on third-party agents within less developed markets. In addition, many of these
countries  have  currencies  that  fluctuate  substantially  and  if  such  currencies  devalue  and  the  Company  cannot  offset  the  devaluations,  the  Company’s  financial
performance within such countries could be adversely affected.

In addition, in China, commercial and economic conditions may adversely affect the Company’s growth prospects in that market. While the Company
continues  to  believe  that  China  represents  an  important  growth  opportunity,  these  events,  coupled  with  heightened  scrutiny  of  the  health  care  industry,  may
continue to have an impact on product pricing and market access generally. The Company anticipates that the reported inquiries made by various governmental
authorities involving multinational pharmaceutical companies in China may continue.

For  all  these  reasons,  sales  within  emerging  markets  carry  significant  risks.  However,  a  failure  to  maintain  the  Company’s  presence  in  emerging

markets could have a material adverse effect on the business, financial condition or results of the Company’s operations.

The Company is exposed to market risk from fluctuations in currency exchange rates and interest rates.

The  Company  operates  in  multiple  jurisdictions  and  virtually  all  sales  are  denominated  in  currencies  of  the  local  jurisdiction.  Additionally,  the
Company has entered and will enter into acquisition, licensing, borrowings or other financial transactions that may give rise to currency and interest rate exposure.

Since the Company cannot, with certainty, foresee and mitigate against such adverse fluctuations, fluctuations in currency exchange rates and interest

rates could negatively affect the Company’s results of operations, financial position and cash flows as occurred with respect to Venezuela in 2015 and 2016.

In order to mitigate against the adverse impact of these market fluctuations, the Company will from time to time enter into hedging agreements. While
hedging agreements, such as currency options and forwards and interest rate swaps, may limit some of the exposure to exchange rate and interest rate fluctuations,
such attempts to mitigate these risks may be costly and not always successful.

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The Company is subject to evolving and complex tax laws, which may result in additional liabilities that may affect results of operations.

The Company is subject to evolving and complex tax laws in the jurisdictions in which it operates. Significant judgment is required for determining the
Company’s  tax  liabilities,  and  the  Company’s  tax  returns  are  periodically  examined  by  various  tax  authorities.  The  Company  believes  that  its  accrual  for  tax
contingencies is adequate for all open years based on past experience, interpretations of tax law, and judgments about potential actions by tax authorities; however,
due to the complexity of tax contingencies, the ultimate resolution of any tax matters may result in payments greater or less than amounts accrued.

In addition, the Company may be affected by changes in tax laws, including tax rate changes, changes to the laws related to the remittance of foreign
earnings  (deferral),  or  other  limitations  impacting  the  U.S. tax  treatment  of  foreign  earnings,  new tax  laws,  and  revised  tax  law  interpretations  in domestic  and
foreign jurisdictions.

Pharmaceutical products can develop unexpected safety or efficacy concerns.

Unexpected safety or efficacy concerns can arise with respect to marketed products, whether or not scientifically justified, leading to product recalls,

withdrawals, or declining sales, as well as product liability, consumer fraud and/or other claims, including potential civil or criminal governmental actions.

Reliance on third party relationships and outsourcing arrangements could adversely affect the Company’s business.

The Company depends on third parties, including suppliers, alliances with other pharmaceutical and biotechnology companies, and third party service
providers, for key aspects of its business including development, manufacture and commercialization of its products and support for its information technology
systems.  Failure  of  these  third  parties  to  meet  their  contractual,  regulatory  and  other  obligations  to  the  Company  or  the  development  of  factors  that  materially
disrupt the relationships between the Company and these third parties could have a material adverse effect on the Company’s business.

The Company is increasingly dependent on sophisticated software applications and computing infrastructure.

The Company is increasingly dependent on sophisticated software applications and computing infrastructure to conduct critical operations. Disruption,
degradation, or manipulation of these applications and systems through intentional or accidental means could impact key business processes. Cyber-attacks against
the  Company’s  applications  and  systems  could  result  in  exposure  of  confidential  information,  the  modification  of  critical  data,  and/or  the  failure  of  critical
operations.  Misuse  of  these  applications  and  systems  could  result  in  the  disclosure  of  sensitive  personal  information  or  the  theft  of  trade  secrets  and  other
confidential business information. The Company continues to leverage new and innovative technologies across the enterprise to improve the efficacy and efficiency
of its business processes; the use of which can create new risks. Although the aggregate impact on the Company’s operations and financial condition has not been
material to date, the Company has been the target of events of this nature and expects them to continue. The Company monitors its data, information technology
and personnel usage of Company systems to reduce these risks and continues to do so on an ongoing basis for any current or potential threats. There can be no
assurance  that  the  Company’s  efforts  to  protect  its  data  and  systems  will  prevent  service  interruption  or  the  loss  of  critical  or  sensitive  information  from  the
Company’s or the Company’s third party providers’ databases or systems that could result in financial, legal, business or reputational harm to the Company.

Negative events in the animal health industry could have a negative impact on future results of operations.

Future sales of key animal health products could be adversely affected by a number of risk factors including certain risks that are specific to the animal
health  business.  For  example,  the  outbreak  of  disease  carried  by  animals,  such  as  Bovine  Spongiform  Encephalopathy  or  mad  cow  disease,  could  lead  to  their
widespread death and precautionary destruction as well as the reduced consumption and demand for animals, which could adversely impact the Company’s results
of  operations.  Also,  the  outbreak  of  any  highly  contagious  diseases  near  the  Company’s  main  production  sites  could  require  the  Company  to  immediately  halt
production of vaccines at such sites or force the Company to incur substantial expenses in procuring raw materials or vaccines elsewhere. Other risks specific to
animal health include

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Table of Contents

epidemics and pandemics, government procurement and pricing practices, weather and global agribusiness economic events. As the Animal Health segment of the
Company’s business becomes more significant, the impact of any such events on future results of operations would also become more significant.

Biologics carry unique risks and uncertainties, which could have a negative impact on future results of operations.

The  successful  development,  testing,  manufacturing  and  commercialization  of  biologics,  particularly  human  and  animal  health  vaccines,  is  a  long,

expensive and uncertain process. There are unique risks and uncertainties with biologics, including:

•

•

There may be limited access to, and supply of, normal and diseased tissue samples, cell lines, pathogens, bacteria, viral strains and other biological
materials. In addition, government regulations in multiple jurisdictions, such as the United States and the EU, could result in restricted access to, or
transport or use of, such materials. If the Company loses access to sufficient sources of such materials, or if tighter restrictions are imposed on the
use of such materials, the Company may not be able to conduct research activities as planned and may incur additional development costs.

The development, manufacturing and marketing of biologics are subject to regulation by the FDA, the EMA and other regulatory bodies. These
regulations  are  often  more  complex  and  extensive  than  the  regulations  applicable  to  other  pharmaceutical  products.  For  example,  in  the  United
States, a BLA, including both preclinical and clinical trial data and extensive data regarding the manufacturing procedures, is required for human
vaccine candidates, and FDA approval is required for the release of each manufactured commercial lot.

• Manufacturing biologics, especially in large quantities, is often complex and may require the use of innovative technologies to handle living micro-
organisms.  Each  lot  of  an  approved  biologic  must  undergo  thorough  testing  for  identity,  strength,  quality,  purity  and  potency.  Manufacturing
biologics  requires  facilities  specifically  designed  for  and  validated  for  this  purpose,  and  sophisticated  quality  assurance  and  quality  control
procedures are necessary. Slight deviations anywhere in the manufacturing process, including filling, labeling, packaging, storage and shipping and
quality  control  and  testing,  may  result  in  lot  failures,  product  recalls  or  spoilage.  When  changes  are  made  to  the  manufacturing  process,  the
Company  may  be  required  to  provide  pre-clinical  and  clinical  data  showing  the  comparable  identity,  strength,  quality,  purity  or  potency  of  the
products before and after such changes.

•

•

Biologics are frequently costly to manufacture because production ingredients are derived from living animal or plant material, and most biologics
cannot be made synthetically. In particular, keeping up with the demand for vaccines may be difficult due to the complexity of producing vaccines.

The use of biologically derived ingredients can lead to allegations of harm, including infections or allergic reactions, or closure of product facilities
due to possible contamination. Any of these events could result in substantial costs.

Product liability insurance for products may be limited, cost prohibitive or unavailable.

As  a  result  of  a  number  of  factors,  product  liability  insurance  has  become  less  available  while  the  cost  has  increased  significantly.  With  respect  to
product liability, the Company self-insures substantially all of its risk, as the availability of commercial insurance has become more restrictive. The Company has
evaluated its risks and has determined that the cost of obtaining product liability insurance outweighs the likely benefits of the coverage that is available and, as
such, has no insurance for certain product liabilities effective August 1, 2004, including liability for legacy Merck products first sold after that date. The Company
will continually assess the most efficient means to address its risk; however, there can be no guarantee that insurance coverage will be obtained or, if obtained, will
be sufficient to fully cover product liabilities that may arise.

Social media platforms present risks and challenges.

The  inappropriate  and/or  unauthorized  use  of  certain  media  vehicles  could  cause  brand  damage  or  information  leakage  or  could  lead  to  legal
implications,  including  from  the  improper  collection  and/or  dissemination  of  personally  identifiable  information.  In  addition,  negative  or  inaccurate  posts  or
comments about the Company on

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Table of Contents

any  social  networking  web  site  could  damage  the  Company’s  reputation,  brand  image  and  goodwill.  Further,  the  disclosure  of  non-public  Company-sensitive
information by the Company’s workforce or others through external media channels could lead to information loss. Although there is an internal Company Social
Media Policy that guides employees on appropriate personal and professional use of social media about the Company, the processes in place may not completely
secure and protect information. Identifying new points of entry as social media continues to expand also presents new challenges.

Cautionary Factors that May Affect Future Results

(Cautionary Statements Under the Private Securities Litigation Reform Act of 1995)

This report and other written reports and oral statements made from time to time by the Company may contain so-called “forward-looking statements,”
all of which are based on management’s current expectations and are subject to risks and uncertainties which may cause results to differ materially from those set
forth  in  the  statements.  One  can  identify  these  forward-looking  statements  by  their  use  of  words  such  as  “anticipates,”  “expects,”  “plans,”  “will,”  “estimates,”
“forecasts,” “projects” and other words of similar meaning. One can also identify them by the fact that they do not relate strictly to historical or current facts. These
statements  are  likely  to  address  the  Company’s  growth  strategy,  financial  results,  product  development,  product  approvals,  product  potential,  and  development
programs.  One  must  carefully  consider  any  such  statement  and  should  understand  that  many  factors  could  cause  actual  results  to  differ  materially  from  the
Company’s forward-looking statements. These factors include inaccurate assumptions and a broad variety of other risks and uncertainties, including some that are
known and some that are not. No forward-looking statement can be guaranteed and actual future results may vary materially. The Company does not assume the
obligation to update any forward-looking statement. The Company cautions you not to place undue reliance on these forward-looking statements. Although it is not
possible to predict or identify all such factors, they may include the following:

• 

• 

Competition from generic and/or biosimilar products as the Company’s products lose patent protection.

Increased “brand” competition in therapeutic areas important to the Company’s long-term business performance.

• 

The  difficulties  and  uncertainties  inherent  in  new  product  development.  The  outcome  of  the  lengthy  and  complex  process  of  new  product
development  is  inherently  uncertain.  A  drug  candidate  can  fail  at  any  stage  of  the  process  and  one  or  more  late-stage  product  candidates  could  fail  to  receive
regulatory approval. New product candidates may appear promising in development but fail to reach the market because of efficacy or safety concerns, the inability
to obtain necessary regulatory approvals, the difficulty or excessive cost to manufacture and/or the infringement of patents or intellectual property rights of others.
Furthermore, the sales of new products may prove to be disappointing and fail to reach anticipated levels.

• 

Pricing  pressures,  both  in  the  United  States  and  abroad,  including  rules  and  practices  of  managed  care  groups,  judicial  decisions  and

governmental laws and regulations related to Medicare, Medicaid and health care reform, pharmaceutical reimbursement and pricing in general.

• 

Changes  in  government  laws  and  regulations,  including  laws  governing  intellectual  property,  and  the  enforcement  thereof  affecting  the

Company’s business.

• 

Efficacy or safety concerns with respect to marketed products, whether or not scientifically justified, leading to product recalls, withdrawals or

declining sales.

• 

Significant changes in customer relationships or changes in the behavior and spending patterns of purchasers of health care products and services,
including  delaying  medical  procedures,  rationing  prescription  medications,  reducing  the  frequency  of  physician  visits  and  foregoing  health  care  insurance
coverage.

• 

Legal  factors,  including  product  liability  claims,  antitrust  litigation  and  governmental  investigations,  including  tax  disputes,  environmental
concerns  and  patent  disputes  with  branded  and  generic  competitors,  any  of  which  could  preclude  commercialization  of  products  or  negatively  affect  the
profitability of existing products.

• 

Lost market opportunity resulting from delays and uncertainties in the approval process of the FDA and foreign regulatory authorities.

27

Table of Contents

• 

Increased focus on privacy issues in countries around the world, including the United States and the EU. The legislative and regulatory landscape
for privacy and data protection continues to evolve, and there has been an increasing amount of focus on privacy and data protection issues with the potential to
affect directly the Company’s business, including recently enacted laws in a majority of states in the United States requiring security breach notification.

• 

• 

Changes in tax laws including changes related to the taxation of foreign earnings.

Changes  in  accounting  pronouncements  promulgated  by  standard-setting  or  regulatory  bodies,  including  the  Financial  Accounting  Standards

Board and the SEC, that are adverse to the Company.

• 

Economic factors over which the Company has no control, including changes in inflation, interest rates and foreign currency exchange rates.

This list should not be considered an exhaustive statement of all potential risks and uncertainties. See “Risk Factors” above.

Item 1B. Unresolved Staff Comments.

None.

Item 2.

Properties.

The Company’s corporate headquarters is located in Kenilworth, New Jersey. The Company’s U.S. commercial operations are headquartered in Upper
Gwynedd, Pennsylvania. The Company’s U.S. pharmaceutical business is conducted through divisional headquarters located in Upper Gwynedd, Pennsylvania and
Kenilworth, New Jersey. The Company’s vaccines business is conducted through divisional headquarters located in West Point, Pennsylvania. Merck’s Animal
Health global headquarters is located in Madison, New Jersey. Principal U.S. research facilities are located in Rahway and Kenilworth, New Jersey, West Point,
Pennsylvania,  Palo  Alto,  California,  Boston,  Massachusetts,  and  Elkhorn,  Nebraska  (Animal  Health).  Principal  research  facilities  outside  the  United  States  are
located  in  Switzerland  and  China.  Merck’s  manufacturing  operations  are  headquartered  in  Whitehouse  Station,  New  Jersey.  The  Company  also  has  production
facilities for human health products at nine locations in the United States and Puerto Rico. Outside the United States, through subsidiaries, the Company owns or
has an interest in manufacturing plants or other properties in Japan, Singapore, South Africa, and other countries in Western Europe, Central and South America,
and Asia.

Capital expenditures were $1.6 billion in 2016 , $1.3 billion in 2015 and $1.3 billion in 2014 . In the United States, these amounted to $1.0 billion in
2016 , $879 million in 2015 and $873 million in 2014 . Abroad, such expenditures amounted to $594 million in 2016 , $404 million in 2015 and $444 million in
2014 .

The Company and its subsidiaries own their principal facilities and manufacturing plants under titles that they consider to be satisfactory. The Company
believes that its properties are in good operating condition and that its machinery and equipment have been well maintained. Plants for the manufacture of products
are suitable for their intended purposes and have capacities and projected capacities adequate for current and projected needs for existing Company products. Some
capacity of the plants is being converted, with any needed modification, to the requirements of newly introduced and future products.

Item 3.

Legal Proceedings.

The  information  called  for  by  this  Item  is  incorporated  herein  by  reference  to  Item  8.  “Financial  Statements  and  Supplementary  Data,”  Note  10.

“Contingencies and Environmental Liabilities”.

Item 4. Mine Safety Disclosures.

Not Applicable.

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Table of Contents

Executive Officers of the Registrant (ages as of February 1, 2017)

All  officers  listed  above  serve  at  the  pleasure  of  the  Board  of  Directors.  None  of  these  officers  was  elected  pursuant  to  any  arrangement  or

understanding between the officer and the Board.

Name

Age

Offices and Business Experience

Kenneth C. Frazier

Adele D. Ambrose

Sanat Chattopadhyay

Robert M. Davis

Richard R. DeLuca, Jr.

Julie L. Gerberding

Mirian M. Graddick-Weir

Michael J. Holston

Rita A. Karachun

Roger M. Perlmutter, M.D., Ph.D.

Adam H. Schechter

Chairman, President and Chief Executive Officer (since December 2011); President and Chief
Executive Officer (January 2011-December 2011), President (May 2010-January 2011)

Senior Vice President and Chief Communications Officer (since November 2009)

Executive Vice President and President, Merck Manufacturing Division (since March 2016); Senior
Vice President, Operations, Merck Manufacturing Division (November 2009-March 2016)

Executive Vice President, Global Services and Chief Financial Officer (since April 2016);
Executive Vice President and Chief Financial Officer (April 2014-April 2016); Corporate Vice
President and President, Medical Products, Baxter International, Inc. (2010-March 2014)

Executive Vice President and President, Merck Animal Health (since September 2011)

Executive Vice President and Chief Patient Officer, Strategic Communications, Global Public
Policy and Population Health (since July 2016); Executive Vice President for Strategic
Communications, Global Public Policy and Population Health (January 2015-July 2016); President,
Merck Vaccines (January 2010-January 2015)

Executive Vice President, Human Resources (since November 2009)

Executive Vice President and General Counsel (since July 2015); Executive Vice President and
Chief Ethics and Compliance Officer (June 2012-July 2015); Executive Vice President, General
Counsel and Board Secretary, Hewlett-Packard Company (2007-December 2011)

Senior Vice President Finance - Global Controller (since March 2014); Assistant Controller
(November 2009-March 2014)

Executive Vice President and President, Merck Research Laboratories (since April 2013); Executive
Vice President, Research and Development, Amgen Inc. (2001-February 2012)

Executive Vice President and President, Global Human Health (since May 2010)

62

60

57

50

54

61

62

54

53

64

52

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Table of Contents

PART II

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities.

The principal market for trading of the Company’s Common Stock is the New York Stock Exchange (NYSE) under the symbol MRK. The Common

Stock market price information set forth in the table below is based on historical NYSE market prices.

The following table also sets forth, for the calendar periods indicated, the dividend per share information.

  Cash Dividends Paid per Common Share

  2016
  2015

Common Stock Market Prices

  2016
  High
  Low
  2015
  High
  Low

Year

4th Q  

3rd Q  

2nd Q  

$

$

1.84   $

1.80   $

0.46   $

0.45   $

0.46   $

0.45   $

0.46   $

0.45   $

4th Q  

3rd Q  

2nd Q  

65.46   $

64.00   $

57.87   $

58.29   $

57.18   $

52.44   $

55.77   $

60.07   $

61.70   $

48.35   $

45.69   $

56.22   $

  $

  $

  $

  $

1st Q

0.46

0.45

1st Q

53.60

47.97

63.62

55.64

As of January 31, 2017, there were approximately 128,600 shareholders of record.

Issuer purchases of equity securities for the three months ended December 31, 2016 were as follows:

Issuer Purchases of Equity Securities

Period
October 1 — October 31

November 1 — November 30

December 1 — December 31

Total

Total Number
of Shares
Purchased (1)

5,451,200

5,447,800

5,618,000

16,517,000

Average Price
Paid Per
Share

$62.17

$61.39

$60.96

$61.50

($ in millions)

Approximate Dollar Value of Shares
That May Yet Be Purchased
Under the Plans or Programs (1)

$5,732

$5,397

$5,055

$5,055

(1)

All 
shares 
purchased 
during 
the 
period 
were 
made 
as 
part 
of 
a 
plan 
approved 
by 
the 
Board 
of 
Directors 
in 
March 
2015 
to 
purchase 
up 
to 
$10 
billion 
in 
Merck 
shares. 
Shares 
are
approximated.

30

 
 
   
   
   
   
   
 
 
 
 
 
 
 
 
   
   
   
   
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 


Table of Contents

The following graph assumes a $100 investment on December 31, 2011, and reinvestment of all dividends, in each of the Company’s Common Shares,
the  S&P  500  Index,  and  a  composite  peer  group  of  the  major  U.S.-based  pharmaceutical  companies,  which  are:  AbbVie  Inc.,  Bristol-Myers  Squibb  Company,
Johnson & Johnson, Eli Lilly and Company, and Pfizer Inc.

Performance Graph

Comparison of Five-Year Cumulative Total Return
Merck & Co., Inc., Composite Peer Group and S&P 500 Index

MERCK

PEER GRP.**

S&P 500

End of
Period Value

$186

208

198

2016/2011
CAGR**

13%

16%

15%

MERCK

PEER GRP.

S&P 500

2011

100.00

100.00

100.00

2012

113.09

115.52

115.99

2013

143.42

160.92

153.55

2014

167.76

188.77

174.55

2015

161.33

197.89

176.95

2016

185.64

208.45

198.10

Compound
Annual
Growth
Rate

*
** Peer
group
average
was
calculated
on
a
market
cap
weighted
basis.
In
addition,
AbbVie
Inc.
replaced
Abbott
Laboratories
in
the
peer
group
beginning
2013
following
the
spin
off
from

Abbott
Laboratories.

This Performance Graph will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Securities Exchange
Act  of  1934,  except  to  the  extent  that  the  Company  specifically  incorporates  it  by  reference.  In  addition,  the  Performance  Graph  will  not  be  deemed  to  be
“soliciting material” or to be “filed” with the SEC or subject to Regulation 14A or 14C, other than as provided in Regulation S-K, or to the liabilities of section 18
of  the  Securities  Exchange  Act  of  1934,  except  to  the  extent  that  the  Company  specifically  requests  that  such  information  be  treated  as  soliciting  material  or
specifically incorporates it by reference into a filing under the Securities Act or the Exchange Act.

31

 
 
 
 
 
 
Table of Contents

Item 6.

Selected Financial Data.                        

The following selected financial data should be read in conjunction with Item 7. “Management’s Discussion and Analysis of Financial Condition and

Results of Operations” and consolidated financial statements and notes thereto contained in Item 8. “Financial Statements and Supplementary Data” of this report.

Merck & Co., Inc. and Subsidiaries
($
in
millions
except
per
share
amounts)

Results for Year:

Sales

Materials and production

Marketing and administrative

Research and development

Restructuring costs

Other (income) expense, net

Income before taxes

Taxes on income

Net income

Less: Net income attributable to noncontrolling interests

Net income attributable to Merck & Co., Inc.

Basic earnings per common share attributable to Merck & Co., Inc. common shareholders

Earnings per common share assuming dilution attributable to Merck & Co., Inc. common

shareholders

Cash dividends declared

Cash dividends declared per common share

Capital expenditures

Depreciation

Average common shares outstanding (millions)

Average common shares outstanding assuming dilution (millions)

Year-End Position:

Working capital 
(5)

Property, plant and equipment, net

Total assets (5)

Long-term debt (5)

Total equity

Year-End Statistics:

Number of stockholders of record

Number of employees

2016 (1)

2015 
(2)

2014 (3)

2013

2012 (4)

$

39,807

  $

39,498

  $

42,237

  $

13,891

9,762

10,124

651

720

4,659

718

3,941

21

3,920

1.42

1.41

5,135

  $

  $

14,934

10,313

6,704

619

1,527

5,401

942

4,459

17

4,442

1.58

1.56

5,115

  $

  $

16,768

11,606

7,180

1,013

(11,613)

17,283

5,349

11,934

14

11,920

4.12

4.07

5,156

  $

  $

1.85

  $

1.81

  $

1.77

  $

1,614

1,611

2,766

2,787

1,283

1,593

2,816

2,841

1,317

2,471

2,894

2,928

$

$

$

$

13,410

  $

10,550

  $

14,198

  $

12,026

95,377

24,274

40,308

129,500

68,000

12,507

101,677

23,829

44,767

135,500

68,000

13,136

98,096

18,629

48,791

142,000

70,000

44,033   $
16,954  
11,911  
7,503  
1,709  
411  
5,545  
1,028  
4,517  
113  
4,404  
1.49   $

1.47   $
5,132  
1.73   $
1,548  
2,225  
2,963  
2,996  

17,461   $
14,973  
105,370  
20,472  
52,326  

149,400  
77,000  

47,267

16,446

12,776

8,168

664

474

8,739

2,440

6,299

131

6,168

2.03

2.00

5,173

1.69

1,954

1,999

3,041

3,076

15,922

16,030

105,876

16,212

55,463

157,400

83,000

(1)

Amounts
for
2016
include
a
charge
related
to
the
settlement
of
worldwide
patent
litigation
related
to
Keytruda .
(2)

Amounts 
for 
2015 
include 
a 
net 
charge 
related 
to 
the 
settlement 
of
 Vioxx shareholder 
class 
action 
litigation, 
foreign 
exchange 
losses 
related 
to 
Venezuela, 
gains 
on 
the 
dispositions 
of
businesses
and
other
assets
and
the
favorable
benefit
of
certain
tax
items.

(3)

Amounts 
for 
2014 
reflect 
the 
divestiture 
of 
Merck’s 
Consumer 
Care 
business 
on 
October 
1, 
2014, 
including 
a 
gain 
on 
the 
sale, 
as 
well 
as 
a 
gain 
recognized 
on 
an 
option 
exercise 
by
AstraZeneca,
gains
on
the
dispositions
of
other
businesses
and
assets,
and
a
loss
on
extinguishment
of
debt.

(4)

Amounts
for
2012
include
a
net
charge
recorded
in
connection
with
the
settlement
of
certain
shareholder
litigation.
(5)

Amounts
have
been
restated
to
give
effect
to
the
adoption
of
accounting
guidance
issued
by
the
Financial
Accounting
Standards
Board.
See
Note
2
to
Item
8(a).
“Financial
Statements.”

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Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Description of Merck’s Business

Merck & Co., Inc. (Merck or the Company) is a global health care company that delivers innovative health solutions through its prescription medicines,
vaccines,  biologic  therapies  and  animal  health  products.  The  Company’s  operations  are  principally  managed  on  a  products  basis  and  include  four  operating
segments, which are the Pharmaceutical, Animal Health, Healthcare Services and Alliances segments. The Pharmaceutical segment is the only reportable segment.

The  Pharmaceutical  segment  includes  human  health  pharmaceutical  and  vaccine  products  marketed  either  directly  by  the  Company  or  through  joint
ventures. Human health pharmaceutical products consist of therapeutic and preventive agents, generally sold by prescription, for the treatment of human disorders.
The Company sells these human health pharmaceutical products primarily to drug wholesalers and retailers, hospitals, government agencies and managed health
care  providers  such  as  health  maintenance  organizations,  pharmacy  benefit  managers  and  other  institutions.  Vaccine  products  consist  of  preventive  pediatric,
adolescent and adult vaccines, primarily administered at physician offices. The Company sells these human health vaccines primarily to physicians, wholesalers,
physician  distributors  and  government  entities.  Sales  of  vaccines  in  most  major  European  markets  were  marketed  through  the  Company’s  Sanofi  Pasteur  MSD
(SPMSD)  joint  venture  until  its  termination  on  December  31,  2016.  Beginning  in  2017,  Merck  will  record  vaccine  sales  in  the  European  markets  that  were
previously part of the joint venture.

The Company also has animal health operations that discover, develop, manufacture and market animal health products, including vaccines, which the
Company  sells  to  veterinarians,  distributors  and  animal  producers.  The  Company’s  Healthcare  Services  segment  provides  services  and  solutions  that  focus  on
engagement, health analytics and clinical services to improve the value of care delivered to patients. Merck’s Alliances segment primarily includes results from the
Company’s relationship with AstraZeneca LP until the termination of that relationship on June 30, 2014. On October 1, 2014, the Company divested its Consumer
Care segment that developed, manufactured and marketed over-the-counter, foot care and sun care products.

Overview

During  2016,  Merck  continued  to  execute  its  innovation  strategy  and  the  Company’s  sustained  investment  in  research  yielded  a  number  of  recent
approvals  and  regulatory  milestones  across  various  therapeutic  areas.  The  Company  received  several  approvals  in  2016  that  include  expanded  indications  for
Keytruda
, the Company’s anti-PD-1 (programmed death receptor-1) therapy, which was approved by the U.S. Food and Drug Administration (FDA) for the first-
line treatment of metastatic non-small-cell lung cancer (NSCLC), as well as for the treatment of head and neck cancer. Additionally, in 2016, both the FDA and the
European Commission (EC) approved Zepatier
,  a  once-daily,  single  tablet  combination  therapy  for  the  treatment  of  chronic  hepatitis  C virus  (HCV) genotype
(GT) 1 or GT4 infection, with ribavirin in certain patient populations.

Worldwide sales were $39.8 billion in 2016 , an increase of 1% compared with 2015 , including a 2% unfavorable effect from foreign exchange. Sales
growth was driven by oncology, HCV, vaccine, and hospital acute care products, reflecting in part the ongoing launches of Keytruda
, Zepatier
and Bridion
, as
well as positive performance from Merck’s Animal Health business. Growth in these areas was largely offset by the effects of generic and biosimilar competition
that resulted in declines for products such as Remicade
and Nasonex
.

Business development remains an important component of the Company’s overall strategy as Merck seeks to identify the best external innovation to
augment its portfolio and pipeline, with a particular focus on early-to-mid-stage pipeline assets. Merck looks for growth opportunities that meet the Company’s
strategic criteria. While looking for the best scientific opportunities, Merck remains financially disciplined, pursuing those business opportunities that the Company
believes can contribute to long-term growth and sustainable value for shareholders.

In January 2016, Merck acquired IOmet Pharma Ltd (IOmet), a drug discovery company focused on the development of innovative medicines for the
treatment  of  cancer,  with  a  particular  emphasis  on  the  fields  of  cancer  immunotherapy  and  cancer  metabolism.  In  July  2016,  Merck  acquired  Afferent
Pharmaceuticals  (Afferent), a privately held pharmaceutical  company focused on the development of therapeutic  candidates targeting the P2X3 receptor for the
treatment of common, poorly-managed, neurogenic conditions, such as chronic cough. In addition, in 2016, Merck entered into a strategic collaboration and license
agreement with Moderna Therapeutics (Moderna) to develop and commercialize novel messenger RNA (mRNA)-based personalized cancer vaccines.

33

Table of Contents

Merck continues to support its in-line portfolio, as well as ongoing and upcoming product launches. Keytruda
is launching around the world in multiple
indications.  In  2016,  Merck  achieved  multiple  additional  regulatory  milestones  for  Keytruda
 including  approval  from  the  FDA  for  the  first-line  treatment  of
patients with NSCLC whose tumors have high PD-L1 expression (tumor proportion score [TPS] of 50% or more) as determined by an FDA-approved test, with no
EGFR or ALK genomic tumor aberrations and also for the treatment of patients with recurrent or metastatic head and neck squamous cell carcinoma with disease
progression on or after platinum-containing chemotherapy. Additionally, in 2016, the EC approved Keytruda
for the treatment of locally advanced or metastatic
NSCLC in patients whose tumors express PD-L1 and who have received at least one prior chemotherapy regimen. In January 2017, the EC approved Keytruda
for
the first-line treatment of metastatic NSCLC in adults whose tumors have high PD-L1 expression (TPS of 50% or more) with no EGFR or ALK positive tumor
mutations. Additionally, the Company is continuing its launch of Zepatier
in the United States and in emerging markets and is now launching in the European
Union (EU) and in Japan.

Merck is focusing its research efforts on the therapeutic areas that it believes can have the most impact on human health, such as oncology, diabetes,
cardiometabolic disease, resistant microbial infection and Alzheimer’s disease. In addition to the recent regulatory approvals discussed above, the Company has
continued  to  advance  other  programs  in  its  late-stage  pipeline  with  several  regulatory  submissions.  Merck  has  five  supplemental  biologics  license  applications
(sBLA)  under  Priority  Review  with  the  FDA  for  Keytruda
 including:  for  use  in  combination  with  chemotherapy  for  the  first-line  treatment  of  patients  with
metastatic or advanced non-squamous NSCLC regardless of PD-L1 expression and with no EGFR or ALK genomic tumor aberrations; for the treatment of patients
with classical Hodgkin lymphoma; for the treatment of previously treated patients with advanced microsatellite instability-high cancer; for the first-line treatment
of  patients  with  locally  advanced  or  metastatic  urothelial  cancer,  including  most  bladder  cancers;  and  for  the  second-line  treatment  of  patients  with  locally
advanced  or  metastatic  urothelial  cancer  with  disease  progression  on  or  after  platinum-containing  chemotherapy.  Merck  is  driving  a  broad  immuno-oncology
development program and investing in the long-term potential for Keytruda
to become foundational in the treatment of a range of cancers. The Keytruda
clinical
development program includes more than 400 clinical trials in more than 30 tumor types; over 200 of these trials combine Keytruda
with other cancer treatments.
MK-1293, an insulin glargine candidate for the treatment of patients with type 1 and type 2 diabetes being developed in a collaboration, is also under review with
the FDA.

In addition to Phase 3 programs for Keytruda
in the therapeutic areas of breast, colorectal, esophageal, gastric, hepatocellular, multiple myeloma, and

renal cancers, the Company also has candidates in Phase 3 clinical development in several other therapeutic areas (see “Research and Development” below).

During  the  past  year,  the  Company  continued  its  focus  on  productivity  improvements,  looking  for  opportunities  to  reallocate  resources  across  the
portfolio to grow its strongest brands and to support the most promising assets in its pipeline. Marketing
and
administrative
expenses declined in 2016 as compared
with 2015 reflecting in part this continued focus by the Company on prioritizing its resources to the highest growth areas. Research
and
development
expenses in
2016 reflect increased clinical development spending as the Company continues to invest in the pipeline.

In November 2016, Merck’s Board of Directors raised the Company’s quarterly dividend to $0.47 per share from $0.46 per share. During 2016, the

Company returned $8.6 billion to shareholders through dividends and share repurchases.

In January  2017, Merck  entered  into  a settlement  and license  agreement  to resolve worldwide patent infringement  litigation  related  to Keytruda
. In
connection with the settlement, Merck recorded a pretax charge of $625 million in the fourth quarter of 2016 (see Note 10 to the consolidated financial statements).

Earnings per common share assuming dilution attributable to common shareholders (EPS) for 2016 were $1.41 compared with $1.56 in 2015 . EPS in
both years reflect the impact of acquisition and divestiture-related costs, including a charge in 2016 related to the uprifosbuvir clinical development program, as
well as restructuring costs and certain other items. Non-GAAP EPS, which excludes these items, were $3.78 in 2016 and $3.59 in 2015 (see “Non-GAAP Income
and Non-GAAP EPS” below).

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Table of Contents

Operating Results

Sales

Worldwide sales were $39.8 billion in 2016, an increase of 1% compared with 2015. Foreign exchange unfavorably affected global sales performance
by  2%  in  2016,  which  includes  a  lower  benefit  from  revenue  hedging  activities  as  compared  with  2015.  Revenue  growth  primarily  reflects  higher  sales  in  the
oncology franchise largely from Keytruda
, the launch of the HCV treatment Zepatier,
and growth in vaccine products, including Gardasil/Gardasil

9, Varivax
and
Pneumovax
23.  Also  contributing  to  sales  growth  in  2016  were  higher  sales  of  hospital  acute  care  products  including  Bridion
and Noxafil
,  growth  within  the
diabetes franchise of Januvia
and Janumet
, as well as higher sales of Animal Health products, particularly Bravecto
. These increases were partially offset by sales
declines attributable to the ongoing effects of generic and biosimilar competition for certain products, including Remicade
and Nasonex
, along with other products
within Diversified Brands. Declines in Isentress
, PegIntron
and Dulera
Inhalation Aerosol also partially offset revenue growth in 2016. Sales performance in 2016
reflects a decline of approximately $625 million due to reduced operations by the Company in Venezuela as a result of evolving economic conditions and volatility
in that country.

Sales in the United States were $18.5 billion in 2016 , an increase of 5% compared with $17.5 billion in 2015 . Within the Pharmaceutical segment,
sales in the United States grew 5% in 2016 driven primarily by the launches of Zepatier
and Bridion
, along with higher sales of Keytruda
and Gardasil/Gardasil
9,
partially offset by lower sales of Nasonex
, Cubicin
, Dulera
Inhalation Aerosol, and Isentress
.

International  sales  were  $21.3  billion  in  2016  ,  a  decline  of  3%  compared  with  $22.0  billion  in  2015  .  Foreign  exchange  unfavorably  affected
international sales performance by 4% in 2016 . International sales within the Pharmaceutical segment declined 3% in 2016, including a 3% unfavorable effect
from foreign exchange, largely reflecting declines in certain emerging markets, offset by an increase in Japan. Sales in emerging markets were $6.7 billion in 2016
, a decline of 9% including a 6% unfavorable effect from foreign exchange, driven primarily by reduced operations in Venezuela, partially offset by growth in other
markets. Sales in Japan grew 6% in 2016 , to $2.8 billion, which includes a 10% favorable effect from foreign exchange. Excluding the favorable effect of foreign
exchange, the sales decline in Japan was largely driven by the loss of market exclusivity for Singulair
combined with the ongoing generic erosion for products
within  Diversified  Brands,  partially  offset  by  higher  sales  of  Belsomra
.  Sales  in  Europe  were  $7.7  billion  in  2016 ,  essentially  flat  as  compared  with  2015,
including a 2% unfavorable effect from foreign exchange. Excluding the unfavorable effect of foreign exchange, sales performance in Europe primarily reflects
volume growth in Keytruda
, Cubicin
, Simponi
, Adempas, Liptruzet
, and the Januvia
franchise, partially offset by ongoing biosimilar competition and generic
erosion for certain products, particularly Remicade,
and other pricing pressures in this region. Total international sales represented 54% and 56% of total sales in
2016 and 2015 , respectively.

Global efforts toward health care cost containment continue to exert pressure on product pricing and market access worldwide. In the United States,
health care reform is contributing to an increase in the number of patients in the Medicaid program under which sales of pharmaceutical products are subject to
substantial  rebates.  In  many  international  markets,  government-mandated  pricing  actions  have  reduced  prices  of  generic  and  patented  drugs.  In  addition,  other
austerity measures negatively affected the Company’s revenue performance in 2016 . The Company anticipates these pricing actions and other austerity measures
will continue to negatively affect revenue performance in 2017 .

35

Table of Contents

Worldwide  sales  were  $39.5  billion  in  2015,  a  decline  of  6%  compared  with  2014  including  a  6%  unfavorable  effect  from  foreign  exchange.  The
acquisition of Cubist Pharmaceuticals, Inc. (Cubist) in 2015, the divestiture of Merck’s Consumer Care (MCC) business in 2014, as well as product divestitures and
the  termination  of  the  Company’s  relationship  with  AstraZeneca  LP  (AZLP)  also  in  2014,  as  discussed  below,  had  a  net  unfavorable  impact  to  sales  of
approximately 3%. In addition, sales performance in 2015 reflects declines in PegIntron
and Victrelis
, Remicade
, Pneumovax
23, Nasonex
, and Vytorin
. These
declines  were  partially  offset  by  volume  growth  in  Keytruda
, Januvia
and Janumet
, Gardasil/Gardasil
9, Noxafil
, Simponi
, Implanon/Nexplanon
, Invanz
,
Dulera
Inhalation Aerosol, and Bridion
, as well as volume growth in Animal Health products and higher third-party manufacturing sales.

In January 2015, the Company acquired Cubist, which contributed sales of $1.3 billion to Merck’s revenues in 2015. In 2014, the Company divested
certain ophthalmic products in several international markets (most of which closed on July 1, 2014). In addition, on October 1, 2014, the Company divested its
MCC business including the prescription rights to Claritin and Afrin. The sales decline in 2015 attributable to these divestitures was approximately $1.9 billion of
which  $1.5  billion  related  to  the  Consumer  Care  segment  and  $400  million  related  to  the  Pharmaceutical  segment.  Also,  in  2014,  the  Company  sold  the  U.S.
marketing  rights  to  Saphris
,  an  antipsychotic  indicated  for  the  treatment  of  schizophrenia  and  bipolar  I  disorder  in  adults,  which  resulted  in  revenue  of  $232
million.  Additionally,  the  Company’s  relationship  with  AZLP  terminated  on  June  30,  2014;  therefore,  effective  July  1,  2014,  the  Company  no  longer  records
supply sales to AZLP. These supply sales were $463 million in 2014 through the termination date and were reflected in the Alliances segment.

36

Table of Contents

Sales of the Company’s products were as follows:

($
in
millions)

Primary Care and Women’s Health

Cardiovascular

Zetia

Vytorin

Diabetes

Januvia

Janumet

General Medicine and Women’s Health

NuvaRing

Implanon/Nexplanon

Dulera

Follistim
AQ

Hospital and Specialty

Hepatitis

Zepatier

HIV

Isentress

Hospital Acute Care

Cubicin
(1)

Noxafil

Invanz

Cancidas

Bridion

Primaxin

Immunology

Remicade

Simponi

Oncology

Keytruda

Emend

Temodar

Diversified Brands

Respiratory

Singulair

Nasonex

Other

Cozaar/Hyzaar

Arcoxia

Fosamax

Zocor

Vaccines (2)

Gardasil/Gardasil
 9

ProQuad/M-M-R
II /Varivax

Zostavax

RotaTeq

Pneumovax
23

Other pharmaceutical (3)

Total Pharmaceutical segment sales

Other segment sales (4)

Total segment sales

Other (5)

$

2016

2015

2014

  $

2,560

1,141

3,908

2,201

777

606

436

355

555

1,387

1,087

595

561

558

482

297

1,268

766

1,402

549

283

915

537

511

450

284

186

2,173

1,640

685

652

641

4,703

35,151

3,862

39,013

794

  $

2,526

1,251

3,863

2,151

732

588

536

383

—  

1,511

1,127

487

569

573

353

313

1,794

690

566

535

312

931

858

667

471

359

217

1,908

1,505

749

610

542

5,105

34,782

3,667

38,449

1,049

2,650

1,516

3,931

2,071

723

502

460

412

—

1,673

25

402

529

681

340

329

2,372

689

55

553

350

1,092

1,099

806

519

470

258

1,738

1,394

765

659

746

6,233

36,042

5,758

41,800

437

 
 
 
   
   
 
   
   
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
   
   
 
   
   
 
 
   
   
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(1)

Sales
of
Cubicin in
2015
represent
sales
subsequent
to
the
Cubist
acquisition
date.
Sales
of
Cubicin in
2014
reflect
sales
in
Japan
pursuant
to
a
previously
existing
licensing
agreement.
(2)

These
amounts
do
not
reflect
sales
of
vaccines
sold
in
most
major
European
markets
through
the
Company’s
joint
venture,
SPMSD,
the
results
of
which
are
reflected
in
equity
income
from
affiliates
which
is
included
in
Other (income) expense, net .
These
amounts
do,
however,
reflect
supply
sales
to
SPMSD.
On
December
31,
2016,
Merck
and
Sanofi
Pasteur
terminated
the
SPMSD
joint
venture
(see
Note
8
to
the
consolidated
financial
statements).

(3)

Other
pharmaceutical
primarily
reflects
sales
of
other
human
health
pharmaceutical
products,
including
products
within
the
franchises
not
listed
separately.
(4)

Represents 
the 
non-reportable 
segments 
of 
Animal 
Health, 
Healthcare 
Services 
and 
Alliances, 
as 
well 
as 
Consumer 
Care 
until 
its 
divestiture 
on 
October 
1, 
2014. 
The 
Alliances 
segment
includes
revenue
from
the
Company’s
relationship
with
AZLP
until
termination
on
June
30,
2014.

(5)

Other
is
primarily
comprised
of
miscellaneous
corporate
revenues,
including
revenue
hedging
activities,
as
well
as
third-party
manufacturing
sales.
Other
in
2016
and
2014
also
includes
approximately
$170
million
and
$232
million,
respectively,
in
connection
with
the
sale
of
the
marketing
rights
to
certain
products
.

$

39,807

  $

39,498

  $

42,237

37

 






Table of Contents

Pharmaceutical Segment

Primary
Care
and
Women’s
Health

Cardiovascular

Combined global sales of Zetia
(marketed in most countries outside the United States as Ezetrol
) and Vytorin
(marketed outside the United States as
Inegy
), medicines for lowering LDL cholesterol, were $3.7 billion in 2016, a decline of 2% compared with 2015 including a 1% unfavorable effect from foreign
exchange. In addition, in 2016, the Company recorded sales of $146 million for Atozet
, a medicine for lowering LDL cholesterol, which the Company markets in
certain  countries  outside  of  the United States.  Global sales  of the  ezetimibe  family  (including  Atozet
) were $3.8 billion in 2016, growth of 1% compared with
2015, reflecting  volume  growth  in  Europe  and  higher  pricing  in  the  United  States,  largely  offset  by lower  sales  in  Venezuela  due  to  reduced  operations  in  this
country and lower volumes in the United States reflecting in part generic competition for Zetia
. By agreement, a generic manufacturer launched a generic version
of Zetia
in the United States in December 2016 and the Company is experiencing a rapid decline in U.S. Zetia
sales. The Company anticipates the decline will
accelerate in future periods. The U.S. patent and exclusivity periods for Zetia
and Vytorin
otherwise expire in April 2017 and the Company anticipates declines in
U.S.  Zetia
 and  Vytorin
 sales  thereafter.  U.S.  sales  of  Zetia
 and  Vytorin
 were  $1.6  billion  and  $473  million,  respectively,  in  2016.  The  Company  has  market
exclusivity in major European markets for Ezetrol
until April 2018 and for Inegy
until April 2019. Combined worldwide sales of the ezetimibe family were $3.8
billion in 2015, a decline of 9% compared with 2014 including an 8% unfavorable effect from foreign exchange. The sales decline was driven primarily by lower
volumes of Ezetrol
in  Canada  where  it  lost  market  exclusivity  in  September  2014,  as  well  as  by  lower  volumes  in  the  United  States,  partially  offset  by  higher
pricing in the United States.

Pursuant to a collaboration between Merck and Bayer AG (Bayer) (see Note 3 to the consolidated financial statements), Merck has lead commercial
rights for Adempas, a novel cardiovascular drug for the treatment of pulmonary arterial hypertension, in countries outside the Americas while Bayer has lead rights
in  the  Americas,  including  the  United  States.  In  2016,  Merck  began  promoting  and  distributing  Adempas  in  Europe.  Transition  in  other  Merck  territories  will
continue in 2017. Merck recorded sales for Adempas of $169 million in 2016, which includes sales in Merck’s marketing territories, as well as Merck’s share of
profits from the sale of Adempas in Bayer’s marketing territories.

In September 2016, Merck sold the marketing rights for Zontivity
in the United States and Canada to Aralez Pharmaceuticals  Inc. for a $25 million
upfront  payment  and  royalties  at  graduated  rates,  plus  potential  future  consideration  dependent  upon  the  achievement  of  certain  aggregate  annual  sales-based
milestones.  Previously,  in  March  2016,  following  several  business  decisions  that  reduced  sales  expectations  for  Zontivity
in  the  United  States  and  Europe,  the
Company  lowered  its  cash  flow  projections  for  Zontivity
.  The  Company  utilized  market  participant  assumptions  and  considered  several  different  scenarios  to
determine the fair value of the intangible asset related to Zontivity
that, when compared with its related carrying value, resulted in an impairment charge of $252
million recorded in Materials
and
production
costs in 2016.

Diabetes

Worldwide combined sales of Januvia
and Janumet
, medicines that help lower blood sugar levels in adults with type 2 diabetes, were $6.1 billion in
2016, an increase of 2% compared with 2015. Sales growth was driven primarily by higher volumes in the United States, Europe and Canada, partially offset by
pricing pressures in the United States and Europe, and lower sales in Venezuela due to the Company’s reduced operations in that country. Combined global sales of
Januvia
 and  Janumet
 were  $6.0  billion  in  2015,  essentially  flat  as  compared  with  2014  including  a  7%  unfavorable  effect  from  foreign  exchange.  Sales
performance reflects higher volumes and pricing in the United States, as well as volume growth in emerging markets and Europe. Volume declines of co-marketed
sitagliptin in Japan due to the timing of sales to the licensee partially offset growth in 2015.

General Medicine and Women’s Health 

Worldwide sales of NuvaRing
, a vaginal contraceptive product, were $777 million in 2016, an increase of 6% compared with 2015, and were $732
million  in  2015,  an  increase  of  1%  compared  with  2014.  Foreign  exchange  unfavorably  affected  global  sales  performance  by  1%  and  7%  in  2016  and  2015,
respectively. Sales growth in both years largely reflects higher pricing in the United States. Volume declines in Europe partially offset revenue growth in 2016. In
August 2016, the U.S. District Court ruled that the Company’s delivery system patent for NuvaRing
is invalid. The Company is appealing this verdict to the U.S.
Court of Appeals for the Federal Circuit. However, given the U.S. District Court’s decision, there may be generic entrants into the U.S. market in advance of the
April 2018 patent

38

Table of Contents

expiration. If this should occur, the Company anticipates a significant decline in U.S. NuvaRing
sales thereafter. U.S. sales of NuvaRing
were $576 million in 2016.
As a result of the unfavorable U.S. District Court decision, the Company evaluated the intangible asset related to NuvaRing
for impairment and concluded that it
was not impaired. The intangible asset value for NuvaRing
was $319 million at December 31, 2016.

Worldwide  sales  of  Implanon/Nexplanon
,  single-rod  subdermal  contraceptive  implants,  grew  to  $606 million  in  2016, an  increase  of  3%  compared
with 2015 including a 3% unfavorable effect from foreign exchange. Sales growth reflects higher demand in the United States, partially offset by declines in certain
emerging  markets,  particularly  in  Venezuela.  Implanon/Nexplanon
 sales  rose  to  $588  million  in  2015,  a  17%  increase  compared  with  2014  including  a  6%
unfavorable effect from foreign exchange. The increase was driven primarily by higher demand in the United States and in emerging markets.

Global sales of Dulera
Inhalation Aerosol, a combination medicine for the treatment of asthma, were $436 million in 2016, a decline of 19% compared
with  2015  including  a  1%  unfavorable  effect  from  foreign  exchange.  The  decline  was  driven  by  lower  sales  in  the  United  Sales  reflecting  competitive  pricing
pressures that were partially offset by higher demand. Worldwide sales of Dulera
Inhalation Aerosol grew 16% in 2015 to $536 million driven primarily by higher
demand in the United States.

Global sales of Follistim
AQ
(marketed in most countries outside the United States as Puregon
), a fertility  treatment,  were $355 million in 2016, a
decline of 7% compared with 2015 including a 2% unfavorable effect from foreign exchange. The sales decline primarily reflects lower volumes in Europe due in
part to supply issues and lower demand in certain emerging markets. Worldwide sales of Follistim
AQ
were $383 million in 2015, a decline of 7% compared with
2014, reflecting a 9% unfavorable effect from foreign exchange that was offset by higher pricing in the United States.

In  2016,  the  Company  determined  that,  for  business  reasons,  it  would  terminate  the  North  America  partnership  agreement  with  ALK-Abelló  that
included both Grastek
and Ragwitek
allergy  immunotherapy  tablets  for sublingual  use. This decision  was not due to efficacy  or safety  concerns  for the tablets.
Merck  provided  ALK-Abelló  with  six  months’  notice  that  it  is  terminating  the  agreement  and  therefore  these  compounds  will  be  returned  to  ALK-Abelló.  In
connection  with  this  decision,  the  Company  wrote-off  $95  million  of  intangible  assets  related  to  these  products  (see  Note  7  to  the  consolidated  financial
statements).

Hospital
and
Specialty

Hepatitis

Global sales of Zepatier
were $555 million in 2016. Zepatier
was approved by the FDA in January 2016 for the treatment of adult patients with chronic
HCV GT1 or GT4 infection, with ribavirin in certain patient populations. Zepatier
was approved by the EC in July 2016 and became available in European markets
in late November 2016. Launches are expected to continue across the EU in 2017. The Company is also launching Zepatier
in Japan and in emerging markets.

Worldwide sales of PegIntron
, a treatment for chronic HCV, declined 65% in 2016 to $63 million and decreased 52% in 2015 to $182 million. The

declines were driven by lower volumes in nearly all regions as the availability of newer therapeutic options resulted in continued loss of market share.

Global sales of Victrelis
, an oral medicine for the treatment of chronic HCV, were $18 million in 2015, a decline of 89% compared with sales of $153
million in 2014, driven by lower volumes in Europe and emerging markets as the availability of newer therapeutic options resulted in continued loss of market
share. Sale of Victrelis
were de
minimis
in 2016.

HIV

Worldwide sales of Isentress,
an HIV integrase inhibitor for use in combination with other antiretroviral agents for the treatment of HIV-1 infection,
were $1.4 billion in 2016, a decline of 8% compared with 2015 including a 2% unfavorable effect from foreign exchange. The sales decline was driven primarily
by lower volumes in the United States, as well as lower demand and pricing in Europe due to competitive pressures, partially offset by a favorable adjustment to
discount  reserves  in  the  United  States  and  higher  demand  in  certain  emerging  markets.  Global  sales  of  Isentress
were  $1.5  billion  in  2015,  a  decline  of  10%
compared with 2014 including an 8% unfavorable effect from foreign exchange. The decline was driven primarily by lower volumes in the United States and lower
demand and

39

Table of Contents

pricing in Europe due to competitive pressures, partially offset by higher volumes in Latin America and higher pricing in the United States.

Hospital Acute Care

Global  sales  of  Cubicin
,  an  I.V.  antibiotic  for  complicated  skin  and  skin  structure  infections  or  bacteremia  when  caused  by  designated  susceptible
organisms, were $1.1 billion in 2016, a decline of 4% compared with 2015. The U.S. composition patent for Cubicin
expired in June 2016 and the Company is
experiencing a significant decline in U.S. Cubicin
sales and expects the decline to continue. The sales decline in the United States was partially offset by sales of
Cubicin
 in  certain  international  markets  for  which  the  Company  acquired  marketing  rights  in  the  fourth  quarter  of  2015  (including  Europe,  Latin  America,
Australia,  New  Zealand,  China,  South  Africa  and  certain  other  Asia  Pacific  countries).  The  Company  anticipates  it  will  lose  market  exclusivity  for  Cubicin
in
Europe in 2017.

Worldwide sales of Noxafil
, for the prevention of invasive fungal infections, grew 22% in 2016 to $595 million driven primarily by higher pricing in
the United States, volume growth in Europe reflecting an ongoing positive impact from the approval of new formulations, and higher demand in emerging markets.
Global sales of Noxafil
rose 21% in 2015 to $487 million driven by pricing and higher demand in the United States, as well as volume growth in Europe reflecting
a positive impact from the approval of new formulations. Foreign exchange unfavorably affected global sales performance by 3% in 2016 and 12% in 2015.

Global  sales  of  Invanz
,  for  the  treatment  of  certain  infections,  were  $561  million  in  2016,  a  decline  of  1%  compared  with  2015  including  a  2%
unfavorable effect from foreign exchange. Sales performance in 2016 reflects volume growth in certain emerging markets and higher pricing in the United States,
largely offset by a decline in Venezuela. Worldwide sales of Invanz
were $569 million in 2015, an increase of 8% compared with 2014, reflecting higher sales in
the United States and volume growth in emerging markets that was partially offset by a 9% unfavorable effect from foreign exchange. The Company will lose U.S.
patent protection for Invanz
in November 2017 and the Company anticipates a significant decline in U.S. Invanz
sales thereafter. U.S. sales of Invanz
were $329
million in 2016.

Global sales of Cancidas
, an anti-fungal product sold primarily outside of the United States, were $558 million in 2016, a decline of 3% compared with
2015, reflecting a 4% unfavorable effect from foreign exchange and pricing declines in Europe that were offset by higher volumes in certain emerging markets,
particularly in China. Worldwide sales of Cancidas
were $573 million in 2015, a decrease of 16% compared with 2014 reflecting a 12% unfavorable effect from
foreign exchange and volume declines in certain emerging markets. The EU compound patent for Cancidas
expires in April 2017 and the Company anticipates a
decline in Cancidas
sales in those European markets thereafter. Sales of Cancidas
in Europe were $297 million in 2016.

Global sales of Bridion
, for the reversal of two types of neuromuscular blocking agents used during surgery, were $482 million in 2016, growth of 37%
compared with 2015 including a 2% favorable effect from foreign exchange. Sales growth reflects volume growth in most markets, including in the United States
where it was approved by the FDA in December 2015, partially offset by a decline in Venezuela due to reduced operations by the Company in this country. Sales
of  Bridion
 increased  4%  in  2015  to  $353  million  driven  by  volume  growth  in  international  markets.  Foreign  exchange  unfavorably  affected  global  sales
performance by 19% in 2015.

In October 2016, Merck announced that the FDA approved Zinplava
Injection 25 mg/mL. Zinplava
is indicated to reduce recurrence of Clostridium
difficile
infection (CDI) in patients 18 years of age or older who are receiving antibacterial drug treatment of CDI and are at high risk for CDI recurrence. Zinplava
became available in the United States in February 2017. Zinplava
was approved by the EC in January 2017. The Company anticipates Zinplava
will be available in
the EU in March 2017.

Immunology

Sales  of  Remicade,
a  treatment  for  inflammatory  diseases  (marketed  by  the  Company  in  Europe,  Russia  and  Turkey),  were  $1.3  billion  in  2016,  a
decline  of  29%  compared  with  2015,  and  were  $1.8  billion  in  2015,  a  decline  of  24%  compared  with  2014.  Foreign  exchange  unfavorably  affected  sales
performance by 1% in 2016 and by 14% in 2015. In February 2015, the Company lost market exclusivity for Remicade
in major European markets and no longer
has  market  exclusivity  in  any  of  its  marketing  territories.  The  Company  is  experiencing  pricing  and  volume  declines  in  these  markets  as  a  result  of  biosimilar
competition and expects the declines to continue.

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Sales of Simponi
, a once-monthly subcutaneous treatment for certain inflammatory diseases (marketed by the Company in Europe, Russia and Turkey),
were $766 million in 2016, an increase of 11% compared with 2015 including a 3% unfavorable effect from foreign exchange. Sales growth was driven primarily
by  higher  volumes  in  Europe  reflecting  in  part  an  ongoing  positive  impact  from  the  ulcerative  colitis  indication.  Sales  of  Simponi
were  $690  million  in  2015,
essentially  flat  as compared  with 2014, driven by higher demand in Europe, reflecting  in part an ongoing positive impact  from the ulcerative  colitis  indication,
which was offset by a 19% unfavorable effect from foreign exchange.

Oncology

Sales  of  Keytruda
,  an  anti-PD-1  therapy,  were  $1.4  billion  in  2016,  $566  million  in  2015  and  $55  million  in  2014.  The  year-over-year  increases

primarily reflect higher sales in the United States, Europe and in emerging markets as the Company continues to launch Keytruda
.

In October 2016, Merck announced that the FDA approved Keytruda
for the first-line treatment of patients with NSCLC whose tumors have high PD-
L1  expression  (TPS  of  50%  or  more)  as  determined  by  an  FDA-approved  test,  with  no  EGFR  or  ALK  genomic  tumor  aberrations.  With  this  new  indication,
Keytruda
is now the only anti-PD-1 therapy to be approved in the first-line treatment setting for these patients. In addition, the FDA approved a labeling update to
include data from KEYNOTE-010 in the second-line or greater treatment setting for patients with metastatic NSCLC whose tumors express PD-L1 (TPS of 1% or
more)  as  determined  by  an  FDA-approved  test,  with  disease  progression  on  or  after  platinum-containing  chemotherapy.  Patients  with  EGFR  or  ALK  genomic
tumor aberrations should have disease progression on FDA-approved therapy for these aberrations prior to receiving Keytruda
. In December 2016, Keytruda
was
approved in Japan for the treatment of certain patients with PD-L1-positive unresectable advanced/recurrent NSCLC in the first- and second-line treatment settings.
Additionally, in January 2017, the EC approved Keytruda
for the first-line treatment of metastatic NSCLC in adults whose tumors have high PD-L1 expression
(TPS of 50% or more) with no EGFR or ALK positive tumor mutations.

In August 2016, Merck announced that the FDA approved Keytruda
for the treatment of patients with recurrent or metastatic head and neck squamous

cell carcinoma (HNSCC) with disease progression on or after platinum-containing chemotherapy.

Keytruda
is now approved in the United States and in the EU for the treatment of previously untreated metastatic NSCLC in patients whose tumors
express  high  levels  of  PD-L1  and  previously  treated  metastatic  NSCLC  in  patients  whose  tumors  express  PD-L1,  as  well  as  for  the  treatment  of  advanced
melanoma. Keytruda
is also approved in the United States for previously treated recurrent or metastatic HNSCC. The Company has launched Keytruda
in over 50
markets globally.

Merck  has  five  sBLAs  under  Priority  Review  with  the  FDA  for  Keytruda
 including:  for  use  in  combination  with  chemotherapy  for  the  first-line
treatment of patients with metastatic or advanced non-squamous NSCLC regardless of PD-L1 expression and with no EGFR or ALK genomic tumor aberrations;
for the treatment of patients with classical Hodgkin lymphoma; for the treatment of previously treated patients with advanced microsatellite instability-high cancer;
for the first-line treatment of patients with locally advanced or metastatic urothelial cancer, including most bladder cancers; and for the second-line treatment of
patients  with  locally  advanced  or  metastatic  urothelial  cancer  with  disease  progression  on  or  after  platinum-containing  chemotherapy.  The  Company  plans
additional regulatory filings in the United States and other countries. The Keytruda
clinical development program includes studies across a broad range of cancer
types (see “Research and Development” below). In January 2017, Merck entered into a settlement and license agreement to resolve worldwide patent infringement
litigation related to Keytruda
(see Note 10 to the consolidated financial statements).

Global sales of Emend
, for the prevention of chemotherapy-induced and post-operative nausea and vomiting, were $549 million in 2016, an increase of
3% compared with 2015 including a 1% unfavorable effect from foreign exchange, largely reflecting higher pricing in the United States, partially offset by volume
declines in Japan. In February 2016, Merck announced that the FDA approved a supplemental new drug application for single-dose Emend
for injection for the
prevention of delayed nausea and vomiting in adults receiving initial and repeat courses of moderately emetogenic chemotherapy. Worldwide sales of Emend
were
$535 million in 2015, a decline of 3% reflecting a 6% unfavorable effect from foreign exchange that was partially offset by higher pricing in the United States and
volume growth in Europe.

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Diversified
Brands

Merck’s diversified brands include human health pharmaceutical products that are approaching the expiration of their marketing exclusivity or are no

longer protected by patents in developed markets, but continue to be a core part of the Company’s offering in other markets around the world.

Respiratory

Worldwide sales of Singulair,
a once-a-day oral medicine for the chronic treatment of asthma and for the relief of symptoms of allergic rhinitis, were
$915 million in 2016, a decrease of 2% compared with 2015 including a 2% favorable effect from foreign exchange. Sales performance primarily reflects lower
volumes  in  Japan.  The  patents  that  provided  market  exclusivity  for  Singulair
in  Japan  expired  in  February  and  October  of  2016.  As  a  result,  the  Company  is
experiencing Singulair
volume declines in Japan and expects the decline to continue. Singulair
sales in Japan were $455 million in 2016. In years prior to 2016, the
Company lost market exclusivity for Singulair
in the United States and in most major international markets with the exception of Japan. The Company no longer
has market exclusivity for Singulair
in any major market. Global sales of Singulair
were $931 million in 2015, a decline of 15% compared with 2014 including a
10% unfavorable effect from foreign exchange. The sales decline in 2015 was driven primarily by lower volumes in Japan and lower demand in Europe as a result
of generic competition.

Global sales of Nasonex
, an inhaled nasal corticosteroid  for the treatment  of nasal allergy  symptoms, were $537 million  in 2016, a decline  of 37%
compared  with  2015,  driven  primarily  by  lower  volumes  in  the  United  States  resulting  from  generic  competition.  In  March  2016,  Apotex  launched  a  generic
version of Nasonex
in the United States pursuant to a June 2012 U.S. District Court for the District of New Jersey ruling (upheld on appeal to the U.S. Court of
Appeals  for  the  Federal  Circuit)  holding  that  Apotex’s  generic  version  of  Nasonex
 does  not  infringe  on  the  Company’s  formulation  patent.  Accordingly,  the
Company is experiencing a substantial decline in U.S. Nasonex
sales and expects the decline to continue. The decline in global Nasonex
sales in 2016 was also
driven  by lower  volumes  and  pricing  in  Europe  from  ongoing  generic  erosion  and  lower  sales  in  Venezuela  due  to  reduced  operations  by the  Company  in  this
country. Worldwide sales of Nasonex
were $858 million in 2015, a decline of 22% compared with 2014 including a 6% unfavorable effect from foreign exchange.
The decline was driven primarily by lower volumes in the United States reflecting competition from alternative generic treatment options, as well as from supply
constraints. In addition, lower volumes and pricing in Europe from ongoing generic erosion also contributed to the Nasonex
sales decline in 2015.

Other

Global sales of Cozaar
and its companion agent Hyzaar
(a combination of Cozaar
and hydrochlorothiazide), treatments for hypertension, declined 23%
in 2016 to $511 million and decreased 17% in 2015 to $667 million. Foreign exchange unfavorably affected global sales performance by 3% and 9% in 2016 and
2015, respectively. The patents that provided market exclusivity for Cozaar
and Hyzaar
in the United States and in most major international markets have expired.
Accordingly, the Company is experiencing declines in Cozaar
and Hyzaar
sales and expects the declines to continue.

Vaccines

The following discussion of vaccines does not include sales of vaccines sold in most major European markets through SPMSD, the Company’s joint
venture with Sanofi Pasteur (Sanofi), the results of which are reflected in equity income from affiliates included in Other
(income)
expense,
net
(see “Selected Joint
Venture and Affiliate Information” below). Supply sales to SPMSD, however, are included. On December 31, 2016, Merck and Sanofi terminated SPMSD and
ended their joint vaccines operations in Europe (see Note 8 to the consolidated financial statements). Beginning in 2017, Merck will record vaccine sales in the
European markets that were previously part of the SPMSD joint venture.

Merck’s sales of Gardasil/Gardasil
9, vaccines to help prevent certain cancers and diseases caused by certain types of HPV, were $2.2 billion in 2016,
growth of 14% compared with 2015. Sales growth was driven primarily by higher volumes and pricing in the United States, as well as higher demand in certain
emerging  markets  that was partially  offset  by a decline  in government  tenders in Brazil. In October 2016, the FDA approved a 2-dose vaccination  regimen  for
Gardasil
9, for use in girls and boys 9 through 14 years of age, and the U.S. Centers for Disease Control and Prevention’s Advisory Committee on Immunization
Practices voted to recommend the 2-dose vaccination regimen for certain 9 through 14 year olds. The Company anticipates the 2-dose vaccination regimen will
have an unfavorable effect on sales of Gardasil
 9 during the period of transition. Merck’s sales of  Gardasil/Gardasil
9 were $1.9 billion in 2015, an increase of
10% compared with 2014 including a 1% unfavorable effect from foreign exchange. Sales growth

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was driven primarily by higher sales in the United States resulting from higher pricing and increased volumes reflecting the timing of public sector purchases, as
well as increased government tenders in the Asia Pacific region, partially offset by declines in Latin America due to both price and volume. Gardasil
9, Merck’s 9-
valent HPV vaccine, was approved by the FDA in December 2014 for use in females 9 through 26 years of age, and males 9 through 15 years of age. Gardasil
9
includes the greatest number of HPV types in any available HPV vaccine. In December 2015, the FDA approved an expanded age indication for Gardasil
9, to
include use in males 16 through 26 years of age for the prevention of anal cancers, precancerous or dysplastic lesions and genital warts caused by certain HPV
types. The Company is a party to certain third-party license agreements with respect to Gardasil/Gardasil
9 (including a cross-license and settlement agreement
with  GlaxoSmithKline).  As  a  result  of  these  agreements,  the  Company  pays  royalties  on  worldwide  Gardasil/Gardasil
9  sales  of  16%  to  24%  which  vary  by
country and are included in Materials
and
production
costs.

Merck’s sales of ProQuad
, a pediatric combination vaccine to help protect against measles, mumps, rubella and varicella, were $495 million in 2016,
$454 million in 2015 and $395 million in 2014. Sales growth in 2016 as compared with 2015 was driven primarily by higher demand and pricing in the United
States. Sales growth in 2015 as compared with 2014 primarily reflects higher sales in the United States reflecting increased volumes, which were driven in part by
measles outbreaks in the United States, as well as higher pricing.

Merck’s sales of M-M-R
II, a vaccine to help protect against measles, mumps and rubella, were $353 million in 2016, $365 million in 2015 and $326

million in 2014. Sales performance in 2015 as compared with 2016 and 2014 was driven by higher demand resulting from measles outbreaks in the United States.

Merck’s sales of Varivax,
a vaccine to help prevent chickenpox (varicella), were $792 million in 2016, $686 million in 2015 and $672 million in 2014.
Sales growth in 2016 as compared with 2015 was driven primarily by higher sales in the United States reflecting the effects of public sector purchasing and higher
pricing that were partially offset by lower demand. Volume growth in certain emerging markets reflecting the timing of government tenders also contributed to the
sales increase in 2016 as compared with 2015. Sales growth in 2015 as compared with 2014 reflects higher volumes in certain emerging markets and higher pricing
in the United States, partially offset by lower volumes in the United States.

Merck’s sales of Zostavax,
a vaccine to help prevent shingles (herpes zoster) in adults 50 years of age and older, were $685 million in 2016, a decline of
9%  compared  with  2015  including  a  1%  unfavorable  effect  from  foreign  exchange.  The  decline  was  driven  primarily  by  lower  volumes  in  the  United  States,
partially  offset by higher pricing in the United States and higher demand in certain emerging markets. Merck’s sales of  Zostavax
were $749 million  in 2015, a
decline of 2% compared with 2014 including a 2% unfavorable effect from foreign exchange. Sales performance in 2015 as compared with 2014 reflects lower
volumes in the United States, partially offset by higher demand in Canada and higher pricing in the United States. The Company is continuing to educate U.S.
customers on the broad managed care coverage for Zostavax
and the process for obtaining reimbursement. Merck is continuing to launch Zostavax
outside of the
United States.

Merck’s sales of RotaTeq,
a vaccine to help protect against rotavirus gastroenteritis in infants and children, were $652 million in 2016, an increase of
7% compared with 2015, and were $610 million in 2015, a decline of 7% compared with 2014 including a 3% unfavorable effect from foreign exchange. Sales
performance in both periods was driven primarily by the effects of public sector purchasing in the United States. Volume growth in certain emerging markets also
contributed to sales growth in 2016.

Merck’s sales of Pneumovax
23, a vaccine to help prevent pneumococcal disease, were $641 million in 2016, an increase of 18% compared with 2015,
driven primarily by higher volumes and pricing in the United States and higher demand in certain emerging markets. Merck’s sales of Pneumovax
23 were $542
million in 2015, a decrease of 27% compared with 2014, driven primarily by lower demand in the United States and sales declines in emerging markets. Foreign
exchange favorably affected sales performance by 1% in 2016 and unfavorably affected sales performance by 2% in 2015.

Other Segments

The Company’s other segments are the Animal Health, Healthcare Services and Alliances segments, which are not material for separate reporting. The
Alliances segment includes revenue from AZLP until the termination of the Company’s relationship with AZLP on June 30, 2014 (see “Selected Joint Venture and
Affiliate Information” below).

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Prior to its disposition on October 1, 2014, the Company also had a Consumer Care segment which had sales of $1.5 billion in 2014.

Animal
Health

Animal  Health  includes  pharmaceutical  and  vaccine  products  for  the  prevention,  treatment  and  control  of  disease  in  all  major  farm  and  companion
animal species. Animal Health sales are affected by competition and the frequent introduction of generic products. Worldwide sales of Animal Health products
were  $3.5  billion  in  2016,  $3.3  billion  in  2015  and  $3.5  billion  in  2014.  Global  sales  of  Animal  Health  products  increased  4%  in  2016  compared  with  2015
including a 4% unfavorable effect from foreign exchange. Sales growth primarily reflects volume growth across most species areas, particularly in products for
companion animals, driven primarily by higher sales of Bravecto,
as well as in poultry and swine products. Worldwide sales of Animal Health products declined
4%  in  2015  compared  with  2014  including  a  13%  unfavorable  effect  from  foreign  exchange.  Sales  performance  in  2015  reflects  volume  growth  in  companion
animal products, driven primarily by higher sales of Bravecto,
which began launching in Europe and the United States in 2014, as well as volume growth in swine
and aqua products.

In  May  2016,  the  Company  received  marketing  approval  from  the  European  Medicines  Agency  (EMA)  for  Bravecto
Spot-On  Solution  for  cats  and

dogs, and in July 2016, the Company received approval in the United States to market the product under the tradename Bravecto
Topical.

In July 2016, Merck announced it had executed an agreement to acquire a controlling interest in Vallée, a leading privately held producer of animal

health products in Brazil (see Note 3 to the consolidated financial statements).

Costs, Expenses and Other

($
in
millions)

Materials and production

Marketing and administrative

Research and development

Restructuring costs

Other (income) expense, net

*
100%
or
greater.

Materials
and
Production

2016

Change

2015

Change

2014

$

$

13,891  

9,762  

10,124  

651  

720  

35,148  

-7 %   $

-5 %  

51 %  

5 %  

-53 %  

3 %   $

14,934  

10,313  

6,704  

619  

1,527  

34,097  

-11 %   $

-11 %  

-7 %  

-39 %  

*

37 %   $

16,768

11,606

7,180

1,013

(11,613)

24,954

Materials and production costs were $13.9 billion in 2016 , $14.9 billion in 2015 and $16.8 billion in 2014 . Costs include expenses for the amortization
of intangible assets recorded in connection with business acquisitions which totaled $3.7 billion in 2016, $4.7 billion in 2015 and $4.2 billion in 2014. Costs in
2016 , 2015 and 2014 also include intangible asset impairment charges of $347 million , $45 million and $1.1 billion , respectively, related to marketed products
and  other  intangibles  (see  Note  7  to  the  consolidated  financial  statements).  The  Company  may  recognize  additional  non-cash  impairment  charges  in  the  future
related  to  intangible  assets  that  were  measured  at  fair  value  and  capitalized  in  connection  with  business  acquisitions  and  such  charges  could  be  material.  In
addition,  expenses  for  2015  include  $105  million  of  amortization  of  purchase  accounting  adjustments  to  Cubist’s  inventories.  Also  included  in  materials  and
production costs are expenses associated with restructuring activities which amounted to $181 million , $361 million and $482 million in 2016 , 2015 and 2014 ,
respectively, including accelerated depreciation and asset write-offs related to the planned sale or closure of manufacturing facilities. Separation costs associated
with manufacturing-related headcount reductions have been incurred and are reflected in Restructuring
costs
as discussed below.

Gross margin was 65.1% in 2016 compared with 62.2% in 2015 and 60.3% in 2014 . The improvement in gross margin in 2016 as compared with 2015
was driven primarily by a lower net impact from the amortization of intangible assets and purchase accounting adjustments to inventories, as well as intangible
asset impairment charges and restructuring costs as noted above, which reduced gross margin by 10.6 percentage points in 2016 compared with 13.2 percentage
points in 2015. Lower inventory write-offs and the favorable effects of foreign exchange also contributed to the gross margin improvement in 2016 as compared
with 2015. The gross margin improvement in 2015 as compared with 2014 was driven primarily by the favorable effects of foreign exchange and lower inventory
write-offs, as well

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as  the  net  impact  of  acquisitions  and  divestitures.  The  amortization  of  intangible  assets  and  purchase  accounting  adjustments  to  inventories,  as  well  as  the
restructuring and intangible asset impairment charges noted above reduced gross margin by13.6 percentage points in 2014 .

Marketing
and
Administrative

Marketing and administrative (M&A) expenses were $9.8 billion in 2016, a decline of 5% compared with 2015 driven largely by lower acquisition and
divestiture-related costs, the favorable effects of foreign exchange, lower administrative expenses, such as legal defense costs, as well as lower selling costs. Higher
promotional spending largely related to product launches and higher restructuring costs partially offset the decline. M&A expenses were $10.3 billion in 2015, a
decline of 11% compared with 2014, largely reflecting the favorable effects of foreign exchange, the 2014 divestiture of MCC, additional expenses in 2014 related
to the health care reform fee as discussed below, lower restructuring costs, as well as lower selling costs, partially offset by higher promotional spending largely
related to product launches, higher costs related to the January acquisition of Cubist, and higher acquisition and divestiture-related costs. M&A expenses include
acquisition and divestiture-related costs of $78 million, $436 million and $234 million in 2016, 2015 and 2014, respectively, consisting of integration, transaction,
and certain other costs related to business acquisitions, including severance costs which are not part of the Company’s formal restructuring programs, as well as
transaction and certain other costs related to divestitures of businesses. Acquisition and divestiture-related costs in 2015 include costs related to the acquisition of
Cubist (see Note 3 to the consolidated financial statements). M&A expenses for 2016 , 2015 and 2014 also include restructuring costs of $95 million , $78 million
and $200 million ,  respectively,  related  primarily  to  accelerated  depreciation  for  facilities  to  be  closed  or  divested.  Separation  costs  associated  with  sales  force
reductions have been incurred and are reflected in Restructuring
costs
as discussed below.

On July 28, 2014, the Internal Revenue Service (IRS) issued final regulations on the annual non-tax deductible health care reform fee imposed by the
Patient  Protection  and  Affordable  Care  Act  that  is  based  on  an  allocation  of  a  company’s  market  share  of  prior  year  branded  pharmaceutical  sales  to  certain
government programs. The final IRS regulations accelerated the recognition criteria for the fee obligation by one year to the year in which the underlying sales
used to allocate the fee occurred rather than the year in which the fee was paid. As a result of this change, Merck recorded an additional year of expense of $193
million during 2014.

Research
and
Development

Research  and  development  (R&D)  expenses  were  $10.1  billion  in  2016  compared  with  $6.7  billion  in  2015.  The  increase  was  driven  primarily  by
higher acquired in-process research and development (IPR&D) impairment charges, increased clinical development spending, higher restructuring and licensing
costs, partially offset by a reduction in expenses associated with a decrease in the estimated fair value measurement of liabilities for contingent consideration, as
well  as  by  the  favorable  effects  of  foreign  exchange.  R&D  expenses  were  $6.7  billion  in  2015,  a  decline  of  7%  compared  with  2014,  driven  primarily  by  the
favorable  effects  of  foreign  exchange,  expenses  recognized  in  2014  to  increase  the  estimated  fair  value  of  liabilities  for  contingent  consideration,  lower
restructuring  costs,  a  charge  in  2014  related  to  a  collaboration  with  Bayer  AG  (Bayer),  and  the  2014  divestiture  of  MCC,  partially  offset  by  the  acquisition  of
Cubist, higher licensing costs and higher clinical development spending in 2015.

R&D expenses are comprised of the costs directly incurred by Merck Research Laboratories (MRL), the Company’s research and development division
that focuses on human health-related activities, which were approximately $4.3 billion in 2016, $4.0 billion in 2015 and $3.7 billion in 2014. Also included in R&D
expenses are costs incurred by other divisions in support of R&D activities, including depreciation, production and general and administrative, as well as licensing
activity,  and  certain  costs  from  operating  segments,  including  the  Pharmaceutical  and  Animal  Health  segments,  which  in  the  aggregate  were  $2.5  billion,  $2.6
billion and $2.8 billion for 2016, 2015 and 2014, respectively. R&D expenses also include IPR&D impairment charges of $3.6 billion , $63 million and $49 million
in 2016 , 2015 and 2014 ,  respectively  (see  “Research  and  Development”  below).  The  Company  may  recognize  additional  non-cash  impairment  charges  in  the
future related to the cancellation or delay of other pipeline programs that were measured at fair value and capitalized in connection with business acquisitions and
such charges could be material. In addition, R&D expenses include expense or income related to changes in the estimated fair value measurement of liabilities for
contingent consideration recorded in connection with acquisitions. During 2016 and 2015, the Company recorded a reduction in expenses of $402 million and $24
million, respectively, to decrease the estimated fair value of liabilities for contingent consideration related to the discontinuation or delay of certain programs (see
Note 3 to the consolidated financial statements). During 2014, the Company recorded a charge of $316 million to

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increase the estimated fair value of liabilities for contingent consideration. R&D expenses in 2016 , 2015 and 2014 also reflect $142 million , $52 million and $283
million , respectively, of accelerated depreciation and asset abandonment costs associated with restructuring activities.

Restructuring
Costs

The Company incurs substantial costs for restructuring program activities related to Merck’s productivity and cost reduction initiatives, as well as in
connection with the integration of certain acquired businesses. In 2010 and 2013, the Company commenced actions under global restructuring programs designed
to streamline its cost structure. The actions under these programs include the elimination of positions in sales, administrative and headquarters organizations, as
well as the sale or closure of certain manufacturing and research and development sites and the consolidation of office facilities. The Company also continues to
reduce its global real estate footprint and improve the efficiency of its manufacturing and supply network. The non-facility related restructuring actions under these
programs are substantially complete; the remaining activities primarily relate to ongoing facility rationalizations.

Restructuring  costs, primarily  representing  separation  and other  related  costs associated  with these restructuring  activities,  were $651 million , $619

million and $1.0 billion in 2016 , 2015 and 2014 ,  respectively.  In  2016 , 2015 and 2014 , separation  costs of $216 million , $208 million and $674 million ,
respectively, were incurred associated with actual headcount reductions, as well as estimated expenses under existing severance programs for headcount reductions
that were probable and could be reasonably estimated. Merck eliminated approximately 2,625 positions in 2016 , 3,770 positions in 2015 and 6,085 positions in
2014 related  to  these  restructuring  activities.  These  position  eliminations  are  comprised  of  actual  headcount  reductions,  and  the  elimination  of  contractors  and
vacant  positions.  Also  included  in  restructuring  costs  are  asset  abandonment,  shut-down  and  other  related  costs,  as  well  as  employee-related  costs  such  as
curtailment,  settlement  and  termination  charges  associated  with  pension  and  other  postretirement  benefit  plans  and  share-based  compensation  plan  costs.  For
segment reporting, restructuring costs are unallocated expenses.

Additional costs associated with the Company’s restructuring activities are included in Materials
and
production
, Marketing
and
administrative
and
Research
and
development
as discussed above. The Company recorded aggregate pretax costs of $1.1 billion in 2016, $1.1 billion in 2015 and $2.0 billion in 2014
related  to  restructuring  program  activities  (see  Note  4  to  the  consolidated  financial  statements).  The  Company  expects  to  substantially  complete  the  remaining
actions under the programs by the end of 2017 and incur approximately $700 million of additional pretax costs.

Other
(Income)
Expense,
Net

Other (income) expense, net was $720 million of expense in 2016 , $1.5 billion of expense in 2015 and $11.6 billion of income in 2014 . For details on

the components of Other
(income)
expense,
net
, see Note 14 to the consolidated financial statements.

Segment
Profits

($
in
millions)

Pharmaceutical segment profits

Other non-reportable segment profits

Other

Income before income taxes

2016

2015

2014

$

$

22,180   $

21,658   $

1,507  

(19,028)  

1,573  

(17,830)  

4,659   $

5,401   $

22,164

2,386

(7,267)

17,283

Segment profits are comprised of segment sales less standard costs, certain operating expenses directly incurred by the segment, components of equity
income  or  loss  from  affiliates  and  certain  depreciation  and  amortization  expenses.  For  internal  management  reporting  presented  to  the  chief  operating  decision
maker,  Merck  does  not  allocate  materials  and  production  costs,  other  than  standard  costs,  the  majority  of  research  and  development  expenses  or  general  and
administrative expenses, nor the cost of financing these activities. Separate divisions maintain responsibility for monitoring and managing these costs, including
depreciation related to fixed assets utilized by these divisions and, therefore, they are not included in segment profits. Also excluded from the determination of
segment  profits  are  acquisition  and  divestiture-related  costs,  including  the  amortization  of  purchase  accounting  adjustments  and  intangible  asset  impairment
charges, restructuring costs, taxes paid at the joint venture level and a portion of equity income. Additionally, segment profits do not reflect other expenses from
corporate and manufacturing cost centers and other

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miscellaneous  income  or  expense.  These  unallocated  items,  including  a  charge  related  to  the  settlement  of  worldwide  Keytruda
 patent  litigation,  gains  on
divestitures, a net charge related to the settlement of Vioxx
shareholder class action litigation, the gain on AstraZeneca’s option exercise, foreign exchange losses
related to the devaluation of the Company’s net monetary assets in Venezuela, the loss on extinguishment of debt and an additional year of expense related to the
health care reform fee, are reflected in “Other” in the above table. Also included in “Other” are miscellaneous corporate profits (losses), as well as operating profits
(losses) related to third-party manufacturing sales.

Pharmaceutical segment profits grew 2% in 2016 compared with 2015 primarily reflecting higher sales. Pharmaceutical segment profits declined 2% in

2015 compared with 2014 primarily reflecting the unfavorable effects of foreign exchange.

Taxes
on
Income

The effective income tax rates of 15.4% in 2016 , 17.4% in 2015 and 30.9% in 2014 reflect the impacts of acquisition and divestiture-related costs,
which in 2016 include $3.6 billion of IPR&D impairment charges, as well as restructuring costs and the beneficial impact of foreign earnings. The effective income
tax rate for 2015 also reflects the favorable impact of a net benefit of $410 million related to the settlement of certain federal income tax issues, the impact of the
net charge related to the settlement of Vioxx
shareholder class action litigation being fully deductible at combined U.S. federal and state tax rates and the favorable
impact of tax legislation enacted in the fourth quarter of 2015, as well as the unfavorable effect of non-tax deductible foreign exchange losses related to Venezuela
(see Note 14 to the consolidated financial statements). The effective income tax rate for 2014 reflects the impact of the gain on the divestiture of MCC being taxed
at combined U.S. federal and state tax rates. In addition, the effective income tax rate for 2014 includes a net tax benefit of $517 million recorded in connection
with AstraZeneca’s option exercise (see Note 8 to the consolidated financial statements) and a benefit of approximately $300 million associated with a capital loss
generated  in  connection  with  the  sale  of  Sirna  (see  Note  3  to  the  consolidated  financial  statements).  The  effective  income  tax  rate  for  2014  also  includes  the
unfavorable  impact  of  an  additional  year  of  expense  for  the  non-tax  deductible  health  care  reform  fee  that  the  Company  recorded  in  accordance  with  final
regulations issued by the IRS.

The  Company  is  under  examination  by  numerous  tax  authorities  in  various  jurisdictions  globally.  The  ultimate  finalization  of  the  Company’s
examinations with relevant taxing authorities can include formal administrative and legal proceedings, which could have a significant impact on the timing of the
reversal  of  unrecognized  tax  benefits.  The  Company  believes  that  its  reserves  for  uncertain  tax  positions  are  adequate  to  cover  existing  risks  or  exposures.
However, there is one item that is currently under discussion with the IRS relating to the 2006 through 2008 examination. The Company has concluded that its
position should be sustained upon audit. However, if this item were to result in an unfavorable outcome or settlement, it could have a material adverse impact on
the Company’s financial position, liquidity and results of operations.

Net
Income
and
Earnings
per
Common
Share

Net income attributable to Merck & Co., Inc. was $3.9 billion in 2016 , $4.4 billion in 2015 and $11.9 billion in 2014 . EPS was $1.41 in 2016 , $1.56

in 2015 and $4.07 in 2014 .

Non-GAAP
Income
and
Non-GAAP
EPS

Non-GAAP income and non-GAAP EPS are alternative views of the Company’s performance that Merck is providing because management believes
this information enhances investors’ understanding of the Company’s results as it permits investors to understand how management assesses performance. Non-
GAAP income and non-GAAP EPS exclude certain items because of the nature of these items and the impact that they have on the analysis of underlying business
performance and trends. The excluded items (which should not be considered non-recurring) consist of acquisition and divestiture-related costs, restructuring costs
and certain other items. These excluded items are significant components in understanding and assessing financial performance.

Non-GAAP  income  and  non-GAAP  EPS  are  important  internal  measures  for  the  Company.  Senior  management  receives  a  monthly  analysis  of
operating results that includes non-GAAP EPS. Management uses these measures internally for planning and forecasting purposes and to measure the performance
of the Company along with other metrics. Senior management’s annual compensation is derived in part using non-GAAP income and non-GAAP EPS. Since non-
GAAP  income  and  non-GAAP  EPS  are  not  measures  determined  in  accordance  with  GAAP,  they  have  no  standardized  meaning  prescribed  by  GAAP  and,
therefore, may not be comparable to the calculation of

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similar measures of other companies. The information on non-GAAP income and non-GAAP EPS should be considered in addition to, but not as a substitute for or
superior to, net income and EPS prepared in accordance with generally accepted accounting principles in the United States (GAAP).

A reconciliation between GAAP financial measures and non-GAAP financial measures is as follows:

($
in
millions
except
per
share
amounts)

Pretax income as reported under GAAP

Increase (decrease) for excluded items:

Acquisition and divestiture-related costs

Restructuring costs

Other items:

Charge related to the settlement of worldwide Keytruda
 patent litigation

Foreign currency devaluation related to Venezuela

Net charge related to the settlement of Vioxx
shareholder class action litigation

Gain on sale of certain migraine clinical development programs

Gain on divestiture of certain ophthalmic products

Gain on divestiture of Merck Consumer Care

Gain on AstraZeneca option exercise

Loss on extinguishment of debt

Additional year of expense for health care reform fee

Other

Taxes on income as reported under GAAP

Estimated tax benefit (provision) on excluded items (1)

Net tax benefits from the settlements of federal income tax issues

Tax benefits related to sale of Sirna Therapeutics, Inc. subsidiary

Non-GAAP net income

Less: Net income attributable to noncontrolling interests as reported under GAAP

Acquisition and divestiture-related costs attributable to non-controlling interests

Non-GAAP net income attributable to Merck & Co., Inc.

EPS assuming dilution as reported under GAAP
EPS difference (2)

Non-GAAP EPS assuming dilution

2016

2015

2014

$

4,659   $

5,401   $

17,283

7,312  

1,069  

5,398  

1,110  

5,946

1,978

625  

—  

—  

—  

—  

—  

—  

—  

—  

(67)  

—  

876  

680  

(250)  

(147)  

—  

—  

—  

—  

(34)  

13,598  

13,034  

718  

2,321  

—  

—  

942  

1,470  

410  

—  

3,039  

2,822  

10,559  

10,212  

21  

—  

21  

17  

—  

17  

—

—

—

—

(480)

(11,209)

(741)

628

193

(9)

13,589

5,349

(2,345)

—

300

3,304

10,285

14

56

70

$

$

$

10,538   $

10,195   $

10,215

1.41   $

2.37  

3.78   $

1.56   $

2.03  

3.59   $

4.07

(0.58)

3.49

(1)

(2)

The
estimated
tax
impact
on
the
excluded
items
is
determined
by
applying
the
statutory
rate
of
the
originating
territory
of
the
non-GAAP
adjustments.
Amount
for
2014
includes
a
net
benefit
of
$517
million
recorded
in
connection
with
AstraZeneca’s
option
exercise.

Represents
the
difference
between
calculated
GAAP
EPS
and
calculated
non-GAAP
EPS,
which
may
be
different
than
the
amount
calculated
by
dividing
the
impact
of
the
excluded
items
by
the
weighted-average
shares
for
the
applicable
year
.

Acquisition
and
Divestiture-Related
Costs

Non-GAAP  income  and  non-GAAP  EPS  exclude  the  impact  of  certain  amounts  recorded  in  connection  with  business  acquisitions  and  divestitures.
These  amounts  include  the  amortization  of  intangible  assets  and  amortization  of  purchase  accounting  adjustments  to  inventories,  as  well  as  intangible  asset
impairment charges and expense or income related to changes in the estimated fair value measurement of contingent consideration. Also excluded are integration,
transaction, and certain other costs associated with business acquisitions, including severance costs which are not part

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of the Company’s formal restructuring programs, as well as transaction and certain other costs associated with divestitures of businesses.

Restructuring
Costs

Non-GAAP  income  and  non-GAAP  EPS  exclude  costs  related  to  restructuring  actions  (see  Note  4  to  the  consolidated  financial  statements).  These
amounts include employee separation costs and accelerated depreciation associated with facilities to be closed or divested. Accelerated depreciation costs represent
the difference between the depreciation expense to be recognized over the revised useful life of the asset, based upon the anticipated date the site will be closed or
divested or the equipment disposed of, and depreciation expense as determined utilizing the useful life prior to the restructuring actions. Restructuring costs also
include asset abandonment, shut-down and other related costs, as well as employee-related costs such as curtailment, settlement and termination charges associated
with pension and other postretirement benefit plans and share-based compensation costs.

Certain
Other
Items

Non-GAAP  income  and  non-GAAP  EPS  exclude  certain  other  items.  These  items  are  adjusted  for  after  evaluating  them  on  an  individual  basis,
considering their quantitative and qualitative aspects, and typically consist of items that are unusual in nature, significant to the results of a particular period or not
indicative of future operating results. Excluded from non-GAAP income and non-GAAP EPS in 2016 is a charge to settle worldwide patent litigation related to
Keytruda
(see  Note  10  to  the  consolidated  financial  statements).  Excluded  from  non-GAAP  income  and  non-GAAP  EPS  in  2015  are  foreign  exchange  losses
related to the devaluation of the Company’s net monetary assets in Venezuela (see Note 14 to the consolidated financial statements), a net charge related to the
settlement  of  Vioxx
 shareholder  class  action  litigation  (see  Note  10  to  the  consolidated  financial  statements),  a  gain  on  the  sale  of  certain  migraine  clinical
development  programs  (see  Note  3  to  the  consolidated  financial  statements),  a  gain  on  the  divestiture  of  the  Company’s  remaining  ophthalmics  business  in
international markets (see Note 3 to the consolidated financial statements), as well as a net tax benefit related to the settlement of certain federal income tax issues
(see Note 15 to the consolidated financial statements). Excluded from non-GAAP income and non-GAAP EPS in 2014 are certain gains, including a gain on the
divestiture of MCC (see Note 3 to the consolidated financial statements), a gain recognized in conjunction with AstraZeneca’s option exercise, including a related
net  tax  benefit  on  the  transaction  (see  Note  8  to  the  consolidated  financial  statements),  a  gain  on  the  divestiture  of  certain  ophthalmic  products  in  several
international markets (see Note 3 to the consolidated financial statements), as well as a loss on extinguishment of debt (see Note 9 to the consolidated financial
statements),  an  additional  year  of  expense  related  to  the  health  care  reform  fee  as  discussed  above,  and  tax  benefits  from  the  sale  of  the  Company’s  Sirna
Therapeutics, Inc. (Sirna) subsidiary (see Note 3 to the consolidated financial statements).

Research and Development

A chart reflecting the Company’s current research pipeline as of February 24, 2017 is set forth in Item 1. “Business 
—
Research and Development”

above.

Research
and
Development
Update

The Company currently has several candidates under regulatory review in the United States.

Keytruda
is  an  FDA-approved  anti-PD-1  therapy  in  clinical  development  for  expanded  indications  in  different  cancer  types.  Keytruda
is currently

approved for the treatment of NSCLC, melanoma, advanced melanoma, and head and neck cancer (see “Pharmaceutical Segment” above).

In February 2017, the FDA accepted for review two sBLAs for Keytruda
in patients with locally advanced or metastatic urothelial cancer, including
most bladder cancers. The application for first-line use was granted Priority Review for the treatment of these patients who are ineligible for cisplatin-containing
therapy. The application for second-line use was granted Priority Review for these patients with disease progression on or after platinum-containing chemotherapy.
The Prescription Drug User Fee Act (PDUFA) action date for both applications is June 14, 2017. The FDA previously granted Breakthrough Therapy designation
to Keytruda
for the second-line treatment of patients with locally advanced or metastatic urothelial cancer with disease progression on or after platinum-containing
chemotherapy.

In January 2017, the FDA accepted for review an sBLA for Keytruda
plus chemotherapy (pemetrexed plus carboplatin) for the first-line treatment of

patients with metastatic or advanced non-squamous NSCLC regardless of

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PD-L1 expression and with no EGFR or ALK genomic tumor aberrations. This is the first application for regulatory approval of  Keytruda
in combination with
another  treatment.  The  FDA  granted  Priority  Review  with  a  PDUFA  action  date  of  May  10,  2017.  The  sBLA  will  be  reviewed  under  the  FDA’s  Accelerated
Approval program.

In December 2016, the FDA accepted for review an sBLA for Keytruda
for the treatment of patients with refractory classical Hodgkin lymphoma or for
patients who have relapsed after three or more prior lines of therapy. The FDA granted Priority Review with a PDUFA action date of March 15, 2017. The sBLA
will be reviewed under the FDA’s Accelerated Approval program.

In November 2016, the FDA accepted for review an sBLA for Keytruda
for the treatment of previously treated patients with advanced microsatellite
instability-high (MSI-H) cancer. The FDA granted Priority Review with a PDUFA action date of March 8, 2017. The sBLA will be reviewed under the FDA’s
Accelerated  Approval  program.  The  FDA recently  granted  Breakthrough  Therapy  designation  to  Keytruda
for unresectable  or metastatic  MSI-H non-colorectal
cancer, and previously granted it for the treatment of patients with unresectable or metastatic MSI-H colorectal cancer.

Additionally, Keytruda
has also received Breakthrough Therapy designation from the FDA for the treatment of patients with primary mediastinal B-cell

lymphoma that is refractory to or has relapsed after two prior lines of therapy.

The FDA’s Breakthrough Therapy designation is intended to expedite the development and review of a candidate that is planned for use, alone or in
combination,  to  treat  a  serious  or  life-threatening  disease  or  condition  when  preliminary  clinical  evidence  indicates  that  the  drug  may  demonstrate  substantial
improvement over existing therapies on one or more clinically significant endpoints.

The Keytruda
clinical development program consists of more than 400 clinical trials, including more than 200 trials that combine Keytruda
with other
cancer treatments. These studies encompass more than 30 cancer types including: bladder, colorectal, esophageal, gastric, head and neck, hepatocellular, Hodgkin
lymphoma, non-Hodgkin lymphoma, melanoma, multiple myeloma, nasopharyngeal, NSCLC, ovarian, prostate, renal and triple-negative breast, many of which
are currently in Phase 3 clinical development. Further trials are being planned for other cancers.

MK-1293 is an investigational follow-on biologic insulin glargine candidate for the treatment of patients with type 1 and type 2 diabetes under review

by the FDA. MK-1293 was approved in the EU in January 2017. MK-1293 is being developed in collaboration with and partially funded by Samsung Bioepis.

V419 is an investigational pediatric hexavalent combination vaccine, DTaP5-IPV-Hib-HepB, under review with the FDA that is being developed and, if
approved,  will  be  commercialized  through  a  partnership  between  Merck  and  Sanofi.  This  vaccine  is  designed  to  help  protect  against  six  important  diseases  -
diphtheria, tetanus, pertussis (whooping cough), polio (poliovirus types 1, 2, and 3), invasive disease caused by Haemophilus
influenzae
type b (Hib), and hepatitis
B. On November 2, 2015, the FDA issued a Complete Response Letter (CRL) with respect to the Biologics License Application for V419. Both companies are
reviewing the CRL and plan to have further communication with the FDA. In February 2016, the EC granted marketing authorization for V419 for prophylaxis
against diphtheria, tetanus, pertussis, hepatitis B, poliomyelitis, and invasive disease caused by Hib, in infants and toddlers from the age of 6 weeks. V419 is being
marketed as Vaxelis
in the EU.

In  addition  to  the  candidates  under  regulatory  review,  the  Company  has  several  drug  candidates  in  Phase  3  clinical  development  in  addition  to  the

Keytruda
programs discussed above.

MK-8931, verubecestat, is an investigational small molecule inhibitor of the beta-site amyloid precursor protein cleaving enzyme 1 (BACE1) for the
treatment  of  Alzheimer’s  disease.  In  February  2017,  Merck  announced  that  its  external  Data  Monitoring  Committee  (eDMC)  recommended  termination  of  the
Phase  2/3  EPOCH  study  of  verubecestat  in  mild-to-moderate  Alzheimer’s  disease  based  on  the  low  probability  of  success  of  this  study.  The  same  eDMC
recommended that a separate Phase 3 study, APECS, evaluating verubecestat for amnestic mild cognitive impairment due to Alzheimer’s disease, also known as
prodromal Alzheimer’s disease, continue as planned. Estimated primary completion date for the APECS study, which is fully enrolled, is February 2019.

MK-0859, anacetrapib, is an investigational inhibitor of the cholesteryl ester transfer protein (CETP) in development for raising HDL-C and reducing
LDL-C.  Anacetrapib  is  being  evaluated  in  a  30,000  patient,  event-driven  cardiovascular  clinical  outcomes  trial  sponsored  by  Oxford  University,  REVEAL
(Randomized EValuation of the Effects of Anacetrapib Through Lipid-modification), involving patients with preexisting vascular disease. In November

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2015, Merck announced that the Data Monitoring Committee (DMC) of the REVEAL outcomes study completed its planned review of unblinded study data and
recommended the study continue with no changes. The DMC reviewed safety and efficacy data from the study, which included an assessment of futility. Merck
remains blinded to the actual results of this analysis and to other REVEAL safety and efficacy data. Under the study, the last patient’s last visit occurred in January
2017. The Company anticipates receiving the top-line results from the study mid-year 2017.

MK-7655A is a combination of relebactam, an investigational beta-lactamase inhibitor, and imipenem/cilastatin (an approved carbapenem antibiotic).
The FDA has designated this combination a Qualified Infectious Disease Product with designated Fast Track status for the treatment of hospital-acquired bacterial
pneumonia, ventilator-associated bacterial pneumonia, complicated intra-abdominal infections and complicated urinary tract infections.

MK-8228,  letermovir,  is  an  investigational  oral  once-daily  or  an  intravenous  infusion  antiviral  candidate  for  the  prevention  of  clinically-significant
cytomegalovirus  (CMV)  infection.  Letermovir  has  received  Orphan  Drug  Status  in  the  EU  and  in  the  United  States,  where  it  has  also  been  granted  Fast  Track
designation. In October 2016, Merck announced that the pivotal Phase 3 clinical study of letermovir met its primary endpoint. The global, multicenter, randomized,
placebo-controlled study evaluated the efficacy and safety of letermovir in adult (18 years and older) CMV-seropositive recipients of an allogeneic hematopoietic
stem cell transplant. Merck plans to submit regulatory applications for the approval of letermovir in the United States and EU in 2017.

MK-8835, ertugliflozin, is an investigational oral SGLT2 inhibitor being evaluated for the treatment of type 2 diabetes in collaboration with Pfizer Inc.
(Pfizer). In September 2016, Merck and Pfizer announced that a Phase 3 study (VERTIS SITA2) of ertugliflozin met its primary endpoint. Both 5 mg and 15 mg
daily doses of ertugliflozin showed significantly greater reductions in A1C (an average measure of blood glucose over the past two to three months) when added to
patients on a background of sitagliptin and metformin. Ertugliflozin is also being studied in combination with Januvia
(sitagliptin) and metformin. In December
2016, Merck submitted New Drug Applications to the FDA for ertugliflozin  and the two fixed-dose combinations: MK-8835A, ertugliflozin plus  Januvia
, and
MK-8835B,  ertugliflozin  plus  metformin.  The  Company  anticipates  a  response  from  the  FDA  in  the  first  quarter  of  2017.  Ertugliflozin  and  the  two  fixed-dose
combinations are currently under review in the EU. Under the terms of the collaboration agreement with Pfizer, Merck will make a $90 million milestone payment
to Pfizer in 2017.

MK-0431J  is  an  investigational  fixed-dose  combination  of  sitagliptin  and  ipragliflozin  under  development  for  commercialization  in  Japan  in
collaboration with Astellas Pharma Inc. (Astellas). Ipragliflozin, an SGLT2 inhibitor, co-developed by Astellas and Kotobuki Pharmaceutical Co., Ltd. (Kotobuki),
is approved for use in Japan and is being co-promoted with Merck and Kotobuki.

V920 is an investigational rVSV-ZEBOV (Ebola) vaccine candidate being studied in large scale Phase 2/3 clinical trials. In November 2014, Merck and
NewLink Genetics announced an exclusive licensing and collaboration agreement for the investigational Ebola vaccine. In December 2015, Merck announced that
the application for Emergency Use Assessment and Listing (EUAL) for V920 was accepted for review by the World Health Organization (WHO). According to the
WHO, the EUAL process is designed to expedite the availability of vaccines needed for public health emergencies such as another outbreak of Ebola. The decision
to grant V920 EUAL status will be based on data regarding quality, safety, and efficacy/effectiveness; as well as a risk/benefit analysis for emergency use. While
EUAL designation allows for emergency use, the vaccine remains investigational and has not yet been licensed for commercial distribution. In July 2016, Merck
announced that the FDA granted V920 Breakthrough Therapy designation, and that the EMA granted the vaccine candidate PRIME (PRIority MEdicines) status. In
December 2016, end of study results from the WHO ring vaccination trial were reported in Lancet supporting the July 2015 interim assessment that V920 offers
substantial protection against Ebola virus disease, with no reported cases among vaccinated individuals from 10 days after vaccination in both randomized and non-
randomized clusters. Results from other ongoing studies are anticipated in the second half of 2017.

MK-1242, vericiguat, is an investigational treatment for heart failure being studied in a Phase 3 clinical trial in patients suffering from chronic heart
failure.  The  development  of  vericiguat  is  part  of  a  worldwide  strategic  collaboration  between  Merck  and  Bayer  (see  Note  3  to  the  consolidated  financial
statements).

V212 is an inactivated varicella zoster virus vaccine in development for the prevention of herpes zoster. The Company completed the Phase 3 trial in
autologous hematopoietic cell transplant patients and is conducting another Phase 3 trial in patients with solid tumor malignancies undergoing chemotherapy and
hematological malignancies. The

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study in autologous hematopoietic cell transplant patients met its primary endpoints and Merck presented the results from this study at the American Society for
Blood and Marrow Transplantation Meetings in February 2017.

MK-1439,  doravirine,  is  an  investigational  non-nucleoside  reverse  transcriptase  inhibitor  being  developed  by  Merck  for  the  treatment  of  HIV-1
infection. In February 2017, the Company received positive results from a first Phase 3 study showing that doravirine was non-inferior to an alternative regimen in
achieving and maintaining HIV-1 suppression in infected adults during 48 weeks of treatment.

In 2016, the Company also divested or discontinued certain drug candidates.

Merck announced that it is discontinuing the development of odanacatib, an investigational  cathepsin K inhibitor for osteoporosis, and will not seek
regulatory  approval  for  its  use.  Merck  previously  reported  a  numeric  imbalance  in  adjudicated  stroke  events  in  the  pivotal  Phase  3  fracture  outcomes  study  in
postmenopausal women. The Company has decided to discontinue development after an independent adjudication and analysis of major adverse cardiovascular
events confirmed an increased risk of stroke.

The Company determined that, for business reasons, it would terminate the North America partnership agreement with ALK-Abelló that included MK-
8237,  an  investigational  allergy  immunotherapy  tablet  for  house  dust  mite  allergy.  Merck  has  given  ALK-Abelló  six  months’  notice  that  it  is  terminating  the
agreement and therefore this compound will be returned to ALK-Abelló. This decision was not due to efficacy or safety concerns. In connection with the decision,
the Company recorded an IPR&D impairment charge (see Note 7 to the consolidated financial statements).

The Company also decided, for business reasons, to discontinue the clinical development of MK-8342B, referred to as the Next Generation Ring, an
investigational  combination (etonogestrel  and 17ß-estradiol)  vaginal ring for contraception  and the treatment  of dysmenorrhea in women seeking contraception.
This  decision  was  not  due  to  efficacy  or  safety  concerns.  As  a  result  of  this  decision,  the  Company  recorded  an  IPR&D  impairment  charge  (see  Note  7  to  the
consolidated financial statements).

Merck  announced  that,  for  business  reasons,  it  will  not  proceed  with  submitting  marketing  applications  for  omarigliptin,  an  investigational,  once-

weekly DPP-4 inhibitor, in the United States or Europe. This decision did not result from concerns about the efficacy or safety of omarigliptin.

The Company maintains a number of long-term exploratory and fundamental research programs in biology and chemistry as well as research programs
directed toward product development. The Company’s research and development model is designed to increase productivity and improve the probability of success
by  prioritizing  the  Company’s  research  and  development  resources  on  candidates  the  Company  believes  are  capable  of  providing  unambiguous,  promotable
advantages to patients and payers and delivering the maximum value of its approved medicines and vaccines through new indications and new formulations. Merck
is  pursuing  emerging  product  opportunities  independent  of  therapeutic  area  or  modality  (small  molecule,  biologics  and  vaccines)  and  is  building  its  biologics
capabilities. The Company is committed to making externally sourced programs a greater component of its pipeline strategy, with a focus on supplementing its
internal research with a licensing and external alliance strategy focused on the entire spectrum of collaborations from early research to late-stage compounds, as
well as access to new technologies.

The  Company  also  reviews  its  pipeline  to  examine  candidates  which  may  provide  more  value  through  out-licensing.  The  Company  continues  to

evaluate certain late-stage clinical development and platform technology assets to determine their out-licensing or sale potential.

The  Company’s  clinical  pipeline  includes  candidates  in  multiple  disease  areas,  including  atherosclerosis,  cancer,  cardiovascular  diseases,  diabetes,

infectious diseases, inflammatory/autoimmune diseases, neurodegenerative diseases, and respiratory diseases.

Acquired
In-Process
Research
and
Development

In connection with business acquisitions, the Company has recorded the fair value of in-process research projects which, at the time of acquisition, had
not yet reached technological feasibility. At December 31, 2016 , the balance of IPR&D was $1.7 billion . During 2016, the Company recorded IPR&D for projects
obtained in connection with the acquisitions of Afferent and IOmet as discussed below.

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Table of Contents

During 2016 , 2015 and 2014 , $8 million , $280 million and $654 million , respectively, of IPR&D projects received marketing approval in a major

market and the Company began amortizing these assets based on their estimated useful lives.

All of the IPR&D projects that remain in development are subject to the inherent risks and uncertainties in drug development and it is possible that the
Company will not be able to successfully develop and complete the IPR&D programs and profitably commercialize the underlying product candidates. The time
periods to receive approvals from the FDA and other regulatory agencies are subject to uncertainty. Significant delays in the approval process, or the Company’s
failure to obtain approval at all, would delay or prevent the Company from realizing revenues from these products. Additionally, if certain of the IPR&D programs
fail or are abandoned during development, then the Company will not realize the future cash flows it has estimated and recorded as IPR&D as of the acquisition
date,  and  the  Company  may  also  not  recover  the  research  and  development  expenditures  made  since  the  acquisition  to  further  develop  such  program.  If  such
circumstances were to occur, the Company’s future operating results could be adversely affected and the Company may recognize impairment charges and such
charges could be material.

During  2016,  the  Company  recorded  $3.6  billion  of  IPR&D  impairment  charges  within  Research 
and 
development
 expenses.  Of  this  amount,  $2.9
billion relates to the clinical development program for uprifosbuvir, a nucleotide prodrug in clinical development being evaluated for the treatment of HCV. The
Company determined that recent changes to the product profile, as well as changes to Merck’s expectations for pricing and the market opportunity, taken together
constituted a triggering event that required the Company to evaluate the uprifosbuvir intangible asset for impairment. Utilizing market participant assumptions, and
considering  different  scenarios,  the  Company  concluded  that  its  best  estimate  of  the  current  fair  value  of  the  intangible  asset  related  to  uprifosbuvir  was  $240
million, resulting in the recognition of the pretax impairment charge noted above. The IPR&D impairment charges in 2016 also include charges of $180 million
and  $143  million  related  to  the  discontinuation  of  programs  obtained  in  connection  with  the  acquisitions  of  cCAM  Biotherapeutics  Ltd.  and  OncoEthix,
respectively,  resulting  from  unfavorable  efficacy  data.  An  additional  $72  million  relates  to  programs  obtained  in  connection  with  the  SmartCells  acquisition
following a decision to terminate the lead compound due to a lack of efficacy and to pursue a back-up compound which reduced projected future cash flows. The
IPR&D impairment charges in 2016 also include $112 million related to an in-licensed program for house dust mite allergies that, for business reasons, will be
returned  to  the  licensor.  The  remaining  IPR&D  impairment  charges  for  2016  primarily  relate  to  deprioritized  pipeline  programs  that  were  deemed  to  have  no
alternative use during the period, including a $79 million impairment  charge for an investigational  candidate  for contraception.  The discontinuation  or delay of
certain of these clinical development programs resulted in a reduction of the related liabilities for contingent consideration (see Note 3 to the consolidated financial
statements).

During 2015, the Company recorded $63 million of IPR&D impairment charges, of which $50 million related to the surotomycin clinical development
program.  During  2015,  the  Company  received  unfavorable  efficacy  data  from  a  clinical  trial  for  surotomycin.  The  evaluation  of  this  data,  combined  with  an
assessment of the commercial opportunity for surotomycin, resulted in the discontinuation of the program and the IPR&D impairment charge noted above.

During 2014, the Company recorded $49 million of IPR&D impairment charges primarily as a result of changes in cash flow assumptions for certain
compounds obtained in connection with the Company’s joint venture with Supera Farma Laboratorios S.A., as well as for the discontinuation of certain Animal
Health programs.

Additional research and development will be required before any of the remaining programs reach technological feasibility. The costs to complete the
research projects will depend on whether the projects are brought to their final stages of development and are ultimately submitted to the FDA or other regulatory
agencies for approval. As of December 31, 2016 , the estimated costs to complete projects acquired in connection with acquisitions in Phase 3 development for
human health were approximately $290 million.

Acquisitions,
Research
Collaborations
and
License
Agreements

Merck  continues  to  remain  focused  on  pursuing  opportunities  that  have  the  potential  to  drive  both  near-  and  long-term  growth.  Certain  of  the  more
recent significant transactions are described below. Merck is actively monitoring the landscape for growth opportunities that meet the Company’s strategic criteria.

In July 2016, Merck acquired Afferent, a privately held pharmaceutical company focused on the development of therapeutic candidates targeting the

P2X3 receptor for the treatment of common, poorly-managed, neurogenic

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Table of Contents

conditions.  Afferent’s  lead  investigational  candidate,  MK-7264  (formerly  AF-219),  is  a  selective,  non-narcotic,  orally-administered  P2X3  antagonist  being
evaluated in a Phase 2b clinical trial for the treatment of refractory, chronic cough as well as in a Phase 2 clinical trial in idiopathic pulmonary fibrosis with cough.
Total consideration transferred of $510 million included cash paid for outstanding Afferent shares of $487 million , as well as share-based compensation payments
to settle equity awards attributable to precombination service and cash paid for transaction costs on behalf of Afferent. In addition, former Afferent shareholders
are eligible to receive a total of up to an additional $750 million contingent upon the attainment of certain clinical development and commercial milestones for
multiple indications and candidates, including MK-7264. This transaction was accounted for as an acquisition of a business; accordingly, the assets acquired and
liabilities assumed were recorded at their respective fair values as of the acquisition date. The Company determined the fair value of the contingent consideration
was $223 million at the acquisition date utilizing a probability-weighted estimated cash flow stream adjusted for the expected timing of each payment using an
appropriate  discount rate  dependent on the nature and timing of the milestone payment. Merck recognized an intangible  asset for IPR&D of $832 million , net
deferred tax liabilities of $258 million , and other net assets of $29 million (primarily consisting of cash acquired). The excess of the consideration transferred over
the  fair  value  of  net  assets  acquired  of  $130  million  was  recorded  as  goodwill  that  was  allocated  to  the  Pharmaceutical  segment  and  is  not  deductible  for  tax
purposes. The fair value of the identifiable  intangible asset related to IPR&D was determined using an income approach, through which fair value is estimated
based upon the asset’s probability-adjusted future net cash flows, which reflects the stage of development of the project and the associated probability of successful
completion.  The  net  cash  flows  were  then  discounted  to  present  value  using  a  discount  rate  of  11.5% .  Actual  cash  flows  are  likely  to  be  different  than  those
assumed.

In  June  2016,  Merck  and  Moderna  entered  into  a  strategic  collaboration  and  license  agreement  to  develop  and  commercialize  novel  mRNA-based
personalized  cancer  vaccines.  The  development  program  will  entail  multiple  studies  in  several  types  of  cancer  and  include  the  evaluation  of  mRNA-based
personalized cancer vaccines in combination with Merck’s Keytruda
. Pursuant to the terms of the agreement, Merck made an upfront cash payment to Moderna of
$200 million , which was recorded in Research
and
development
expenses. Following human proof of concept studies, Merck has the right to elect to make an
additional payment to Moderna. If Merck exercises this right, the two companies will then equally share cost and profits under a worldwide collaboration for the
development  of  personalized  cancer  vaccines.  Moderna  will  have  the  right  to  elect  to  co-promote  the  personalized  cancer  vaccines  in  the  United  States.  The
agreement entails exclusivity around combinations with Keytruda
. Moderna and Merck will each have the ability to combine mRNA-based personalized cancer
vaccines with other (non-PD-1) agents.

In January 2016, Merck acquired IOmet, a privately held UK-based drug discovery company focused on the development of innovative medicines for
the treatment of cancer, with a particular emphasis on the fields of cancer immunotherapy and cancer metabolism. The acquisition provides Merck with IOmet’s
preclinical  pipeline  of  IDO  (indoleamine-2,3-dioxygenase  1),  TDO  (tryptophan-2,3-dioxygenase),  and  dual-acting  IDO/TDO  inhibitors.  The  transaction  was
accounted  for  as  an  acquisition  of  a  business.  Total  purchase  consideration  in  the  transaction  included  a  cash  payment  of  $150  million  and  future  additional
milestone payments of up to $250 million that are contingent upon certain clinical and regulatory milestones being achieved. The Company determined the fair
value of the contingent consideration was $94 million at the acquisition date utilizing a probability-weighted estimated cash flow stream adjusted for the expected
timing  of  each  payment  utilizing  a  discount  rate  of  10.5% .  Merck  recognized  intangible  assets  for  IPR&D  of  $155 million and  net  deferred  tax  assets  of  $32
million . The excess of the consideration transferred over the fair value of net assets acquired of $57 million was recorded as goodwill that was allocated to the
Pharmaceutical  segment and is not deductible for tax purposes. The fair values of the identifiable intangible assets related to IPR&D were determined using an
income approach. The assets’ probability-adjusted future net cash flows were then discounted to present value also using a discount rate of 10.5% . Actual cash
flows are likely to be different than those assumed.

Selected Joint Venture and Affiliate Information

Sanofi
Pasteur
MSD

On December 31, 2016, Merck and Sanofi terminated the equally-owned joint venture formed in 1994 to develop and market vaccines in Europe (see

Note 8 to the consolidated financial statements).

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Table of Contents

Sales of joint venture products (prior to termination) were as follows:

($
in
millions)

Gardasil/Gardasil
9

Influenza vaccines

Other viral vaccines

RotaTeq

Zostavax

Hepatitis vaccines

Other vaccines

AstraZeneca
LP

2016

2015

2014

$

$

216   $

106  

95  

56  

52  

48  

435  

1,008   $

184   $

128  

77  

56  

87  

62  

329  

923   $

248

159

87

65

103

38

430

1,130

On  June  30,  2014,  AstraZeneca  exercised  an  option  that  resulted  in  the  redemption  of  Merck’s  remaining  interest  in  AstraZeneca  LP  (AZLP),  the
partnership between Merck and AstraZeneca, for $419 million in cash (see Note 8 to the consolidated financial statements). Of this amount, $327 million reflected
an estimate of the fair value of Merck’s interest in Nexium and Prilosec (products sold by AZLP). This portion of the exercise price, which is subject to a true-up in
2018 based on actual sales from closing in 2014 to June 2018, was deferred and recognized as income of $5 million , $182 million and $140 million , during 2016,
2015, and 2014, respectively,  in Other 
(income) 
expense, 
net
 as the contingency was eliminated  as sales occurred. Once the deferred income amount was fully
amortized,  in  the  first  quarter  of  2016,  the  Company  began  recognizing  income  and  a  corresponding  receivable  for  amounts  that  will  be  due  to  Merck  from
AstraZeneca based on the sales performance of Nexium and Prilosec subject to the true-up in June 2018. The Company recognized $93 million of such income in
2016 included in Other
(income)
expense,
net
.

The remaining exercise price of $91 million primarily represents a multiple of ten times Merck’s average 1% annual profit allocation in the partnership
for the three years prior to exercise. Merck recognized the $91 million as a gain in 2014 within Other
(income)
expense,
net
. The Company also recognized a non-
cash gain of approximately $650 million in 2014 within Other
(income)
expense,
net
resulting from the retirement of $2.4 billion of preferred stock, the elimination
of the Company’s $1.4 billion investment in AZLP and a $340 million reduction of goodwill. This transaction resulted in a net tax benefit of $517 million in 2014
primarily reflecting the reversal of deferred taxes on the AZLP investment balance.

In 2014, prior to termination, Merck recorded revenue from AZLP of $463 million and earned partnership returns of $192 million, which were recorded

in equity income from affiliates included in Other
(income)
expense,
net
.

Capital Expenditures

Capital expenditures were $1.6 billion in 2016 , $1.3 billion in 2015 and $1.3 billion in 2014 . Expenditures in the United States were $1.0 billion in

2016 , $879 million in 2015 and $873 million in 2014 .

Depreciation  expense  was  $1.6  billion  in  2016 ,  $1.6  billion  in  2015 and  $2.5  billion  in  2014 of  which  $1.0  billion,  $1.1  billion  and  $2.0  billion,
respectively, applied to locations in the United States. Total depreciation expense in 2016 , 2015 and 2014 included accelerated depreciation of $227 million , $174
million and $900 million , respectively, associated with restructuring activities (see Note 4 to the consolidated financial statements).

Analysis of Liquidity and Capital Resources

Merck’s  strong  financial  profile  enables  it  to  fund  research  and  development,  focus  on  external  alliances,  support  in-line  products  and  maximize

upcoming launches while providing significant cash returns to shareholders.

Selected
Data

($
in
millions)

Working capital

Total debt to total liabilities and equity

Cash provided by operations to total debt

2016

2015

2014

$

13,410

  $

10,550

  $

26.0%  

0.4:1

26.0%  

0.5:1

14,198

21.7%

0.4:1

Cash provided by operating activities was $10.4 billion in 2016 , $12.5 billion in 2015 and $8.0 billion in 2014 . Cash provided by operating activities

in 2016 reflects a net payment of approximately $680 million to fund the

55

 
 
 
 
   
   
 
 
 
 
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Vioxx
shareholder  class action litigation  settlement  not covered by insurance  proceeds (see Note 10 to the consolidated  financial  statements).  Cash provided by
operating activities in 2014 reflects approximately $5.0 billion of taxes paid on the divestiture of MCC. Cash provided by operating activities continues to be the
Company’s primary source of funds to finance operating needs, capital expenditures, a portion of treasury stock purchases and dividends paid to shareholders.

Cash used in investing activities was $3.2 billion in 2016 compared with $4.8 billion in 2015. The lower use of cash in 2016 was driven primarily by
cash used in 2015 for the acquisition of Cubist, as well as lower purchases of securities and other investments in 2016, partially offset by lower proceeds from the
sales of securities and other investments in 2016 and the use of cash in 2016 for the acquisitions of Afferent and StayWell. Cash used in investing activities was
$4.8 billion in 2015 compared with $374 million in 2014 primarily reflecting cash received in 2014 from the divestiture of MCC, higher cash received in 2014
from other dispositions of businesses and in connection with AstraZeneca’s option exercise, as well as cash used for the acquisition of Cubist in 2015, partially
offset  by  lower  purchases  of  securities  and  other  investments,  higher  proceeds  from  the  sales  of  securities  and  other  investments,  cash  used  in  2014  for  the
acquisition of Idenix, and a cash payment made in 2014 upon the formation of the collaboration with Bayer.

Cash used in financing activities was $9.0 billion in 2016 compared with $5.4 billion in 2015 driven primarily by lower proceeds from the issuance of
debt, partially offset by a decrease in short-term borrowings in the prior year, lower payments on debt, lower purchases of treasury stock and higher proceeds from
the exercise of stock options. Cash used in financing activities was $5.4 billion in 2015 compared with $15.2 billion in 2014 driven primarily by higher proceeds
from the issuance of debt, lower payments on debt and lower purchases of treasury stock, partially offset by lower proceeds from the exercise of stock options and
a decrease in short-term borrowings.

During 2015, the Company recorded charges of $876 million related to the devaluation of its net monetary assets in Venezuela, the large majority of

which was cash (see Note 14 to the consolidated financial statements).

At December 31, 2016 , the total of worldwide cash and investments was $25.8 billion , including $14.3 billion of cash, cash equivalents and short-term
investments, and $11.4 billion of long-term  investments.  Generally  80%-90% of cash  and investments  are  held by foreign  subsidiaries  and would be subject  to
significant  tax  payments  if  such  cash  and  investments  were  repatriated  in  the  form  of  dividends.  The  Company  records  U.S.  deferred  tax  liabilities  for  certain
unremitted  earnings,  but  when  amounts  earned  overseas  are  expected  to  be  indefinitely  reinvested  outside  of  the  United  States,  no  accrual  for  U.S.  taxes  is
provided.  The  amount  of  cash  and  investments  held  by  U.S.  and  foreign  subsidiaries  fluctuates  due  to  a  variety  of  factors  including  the  timing  and  receipt  of
payments in the normal course of business. Cash provided by operating activities in the United States continues to be the Company’s primary source of funds to
finance domestic operating needs, capital expenditures, a portion of treasury stock purchases and dividends paid to shareholders.

The Company’s contractual obligations as of December 31, 2016 are as follows:

Payments
Due
by
Period

($
in
millions)

Purchase obligations (1)
Loans payable and current portion of long-term debt (2)

$

Long-term debt

Interest related to debt obligations

Keytruda
 patent litigation settlement

Unrecognized tax benefits (3)

Operating leases

Total

2017

2018—2019

2020—2021

Thereafter

2,131   $

655   $

744   $

435   $

570  

24,266  

9,189  

625  

2,014  

754  

570  

—  

683  

625  

2,014  

200  

—  

4,277  

1,276  

—  

—  

263  

—  

4,156  

1,101  

—  

—  

151  

297

—

15,833

6,129

—

—

140

$

39,549   $

4,747   $

6,560   $

5,843   $

22,399

(1)

Includes
future
inventory
purchases
the
Company
has
committed
to
in
connection
with
certain
divestitures.
(2)

In
February
2017,
$300
million
of
floating
rate
notes
matured
and
were
repaid.
(3)

As
of
December
31,
2016
,
the
Company’s
Consolidated
Balance
Sheet
reflects
liabilities
for
unrecognized
tax
benefits,
interest
and
penalties
of
$4.4
billion
,
including
$2.0
billion
reflected
as
a
current
liability.
Due
to
the
high
degree
of
uncertainty
regarding
the
timing
of
future
cash
outflows
of
liabilities
for
unrecognized
tax
benefits
beyond
one
year,
a
reasonable
estimate
of
the
period
of
cash
settlement
for
years
beyond
2017
cannot
be
made.

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Purchase  obligations  are  enforceable  and  legally  binding  obligations  for  purchases  of  goods  and  services  including  minimum  inventory  contracts,
research and development and advertising. Amounts reflected for research and development obligations do not include contingent milestone payments. In 2017, the
Company will make a $90 million milestone payment in connection with a clinical program being developed in a collaboration (see “Research and Development”
above). Also excluded from research and development obligations are potential future funding commitments of up to approximately $90 million for investments in
research venture capital funds. Loans payable and current portion of long-term debt reflects $267 million of long-dated notes that are subject to repayment at the
option  of  the  holders.  Required  funding  obligations  for  2017 relating  to  the  Company’s  pension  and  other  postretirement  benefit  plans  are  not  expected  to  be
material. However, the Company currently anticipates contributing approximately $50 million to its U.S. pension plans, $160 million to its international pension
plans and $25 million to its other postretirement benefit plans during 2017 .

In November 2016, the Company issued €1.0 billion principal amount of senior unsecured notes consisting of €500 million principal amount of 0.50%
notes due 2024 and €500 million principal amount of 1.375% notes due 2036. The Company intends to use the net proceeds  of the offering  of  $1.1 billion for
general  corporate  purposes,  including  without  limitation,  the  repayment  of  outstanding  commercial  paper  borrowings  and  other  indebtedness  with  upcoming
maturities.

In June 2016, the Company terminated its existing credit facility and entered into a new $6.0 billion, five-year credit facility that matures in June 2021.
The facility provides backup liquidity for the Company’s commercial paper borrowing facility and is to be used for general corporate purposes. The Company has
not drawn funding from this facility.

In December 2015, the Company filed a securities registration statement with the U.S. Securities and Exchange Commission (SEC) under the automatic

shelf registration process available to “well-known seasoned issuers” which is effective for three years.

In February 2015, Merck issued $8.0 billion aggregate principal amount of senior unsecured notes. The Company used a portion of the net proceeds of
the offering of $7.9 billion to repay commercial paper issued to substantially finance the Company’s acquisition of Cubist. The remaining net proceeds were used
for general corporate purposes, including for repurchases of the Company’s common stock, and the repayment of outstanding commercial paper borrowings and
debt maturities.

Also in February 2015, the Company redeemed $1.9 billion of legacy Cubist debt acquired in the acquisition (see Note 3 to the consolidated financial

statements).

In October 2014, the Company issued €2.5 billion principal amount of senior unsecured notes. The net proceeds of the offering of $3.1 billion were
used in part to repay debt that was validly tendered in connection with tender offers launched by the Company for certain outstanding notes and debentures. The
Company paid $2.5 billion in aggregate consideration (applicable purchase price together with accrued interest) to redeem $1.8 billion principal amount of debt. In
November 2014, Merck redeemed an additional $2.0 billion principal amount of senior unsecured notes.

Effective as of November 3, 2009, the Company executed a full and unconditional guarantee of the then existing debt of its subsidiary Merck Sharp &
Dohme Corp. (MSD) and MSD executed a full and unconditional guarantee of the then existing debt of the Company (excluding commercial paper), including for
payments of principal and interest. These guarantees do not extend to debt issued subsequent to that date.

The Company continues to maintain a conservative financial profile. The Company places its cash and investments in instruments that meet high credit
quality standards, as specified in its investment policy guidelines. These guidelines also limit the amount of credit exposure to any one issuer. The Company does
not  participate  in  any  off-balance  sheet  arrangements  involving  unconsolidated  subsidiaries  that  provide  financing  or  potentially  expose  the  Company  to
unrecorded financial obligations.

In November 2016, the Board of Directors declared a quarterly dividend of $0.47 per share on the Company’s common stock payable in January 2017.

In March 2015, Merck’s board of directors authorized additional purchases of up to $10 billion of Merck’s common stock for its treasury. The treasury

stock purchase authorization has no time limit and will be made over time

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in open-market transactions, block transactions, on or off an exchange, or in privately negotiated transactions. The Company purchased $3.4 billion of its common
stock ( 60 million shares) for its treasury during 2016 . The Company has approximately $5.1 billion remaining under the March share repurchase program. The
Company purchased $4.2 billion and $7.7 billion of its common stock during 2015 and 2014 , respectively, under this and previously authorized share repurchase
programs.

Financial Instruments Market Risk Disclosures

The Company manages the impact of foreign exchange rate movements and interest rate movements on its earnings, cash flows and fair values of assets

and liabilities through operational means and through the use of various financial instruments, including derivative instruments.

A significant portion of the Company’s revenues and earnings in foreign affiliates is exposed to changes in foreign exchange rates. The objectives and

accounting related to the Company’s foreign currency risk management program, as well as its interest rate risk management activities are discussed below.

Foreign
Currency
Risk
Management

The Company has established revenue hedging, balance sheet risk management, and net investment hedging programs to protect against volatility of

future foreign currency cash flows and changes in fair value caused by volatility in foreign exchange rates.

The objective of the revenue hedging program is to reduce the variability caused by changes in foreign exchange rates that would affect the U.S. dollar
value of future cash flows derived from foreign currency denominated sales, primarily the euro and Japanese yen. To achieve this objective, the Company will
hedge a portion of its forecasted foreign currency denominated third-party and intercompany distributor entity sales (forecasted sales) that are expected to occur
over its planning cycle, typically no more than two years into the future. The Company will layer in hedges over time, increasing the portion of forecasted sales
hedged as it gets closer to the expected date of the forecasted foreign currency denominated sales. The portion of forecasted sales hedged is based on assessments
of cost-benefit profiles that consider natural offsetting exposures, revenue and exchange rate volatilities and correlations, and the cost of hedging instruments. The
Company manages its anticipated transaction exposure principally with purchased local currency put options, forward contracts, and purchased collar options.

Because Merck principally sells foreign currency in its revenue hedging program, a uniform weakening of the U.S. dollar would yield the largest overall
potential loss in the market value of these hedge instruments. The market value of Merck’s hedges would have declined by an estimated $538 million and $502
million  at  December  31,  2016  and 2015 ,  respectively,  from  a  uniform  10%  weakening  of  the  U.S.  dollar.  The  market  value  was  determined  using  a  foreign
exchange  option  pricing  model  and  holding  all  factors  except  exchange  rates  constant.  Although  not  predictive  in  nature,  the  Company  believes  that  a  10%
threshold  reflects  reasonably  possible  near-term  changes  in  Merck’s  major  foreign  currency  exposures  relative  to  the  U.S.  dollar.  The  cash  flows  from  these
contracts are reported as operating activities in the Consolidated Statement of Cash Flows.

The Company manages operating activities and net asset positions at the local level in order to mitigate the effect of exchange on monetary assets and
liabilities. The Company also uses a balance sheet risk management program to mitigate the exposure of net monetary assets that are denominated in a currency
other  than  a  subsidiary’s  functional  currency  from  the  effects  of  volatility  in  foreign  exchange.  In  these  instances,  Merck  principally  utilizes  forward  exchange
contracts  to  offset  the  effects  of  exchange  on  exposures  denominated  in  developed  country  currencies,  primarily  the  euro  and  Japanese  yen.  For  exposures  in
developing country currencies, the Company will enter into forward contracts to partially offset the effects of exchange on exposures when it is deemed economical
to do so based on a cost-benefit analysis that considers the magnitude of the exposure, the volatility of the exchange rate and the cost of the hedging instrument.
The cash flows from these contracts are reported as operating activities in the Consolidated Statements of Cash Flows.

A  sensitivity  analysis  to  changes  in  the  value  of  the  U.S.  dollar  on  foreign  currency  denominated  derivatives,  investments  and  monetary  assets  and
liabilities indicated that if the U.S. dollar uniformly weakened by 10% against all currency exposures of the Company at December 31, 2016 , Income
before
taxes
would have declined by approximately $26 million in 2016 . Because the Company was in a net short (payable) position relative to its major foreign currencies
after consideration of forward contracts, a uniform weakening of the U.S. dollar will yield the largest overall potential net loss in earnings due to exchange. At
December 31, 2015, the Company was in a net long (receivable)

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position  relative  to  its  major  foreign  currencies  after  consideration  of  forward  contracts,  therefore  a  uniform  10%  strengthening  of  the  U.S.  dollar  would  have
reduced Income
before
taxes
by approximately $45 million. This measurement assumes that a change in one foreign currency relative to the U.S. dollar would not
affect other foreign currencies relative to the U.S. dollar. Although not predictive in nature, the Company believes that a 10% threshold reflects reasonably possible
near-term changes in Merck’s major foreign currency exposures relative to the U.S. dollar. The cash flows from these contracts are reported as operating activities
in the Consolidated Statement of Cash Flows.

Since January 2010, Venezuela has been designated hyperinflationary and, as a result, local foreign operations are remeasured in U.S. dollars with the
impact recorded in results of operations. In 2015, the Venezuelan government identified multiple exchange rates, which included the CENCOEX rate (6.3 VEF per
U.S.  dollar)  and  the  SIMADI  rate.  While  the  Venezuelan  government  had  indicated  that  essential  goods,  including  food  and  medicine,  would  remain  at  the
CENCOEX rate, during the second quarter of 2015, upon evaluation of evolving economic conditions in Venezuela and volatility in the country, combined with a
decline in transactions that were settled at the CENCOEX rate, the Company determined it was unlikely that all outstanding net monetary assets would be settled at
the  CENCOEX  rate.  Accordingly,  during  the  second  quarter  of  2015,  the  Company  recorded  a  charge  of  $715  million  within  Other 
(income) 
expense, 
net
 to
devalue its net monetary assets in Venezuela to an amount that represented the Company’s estimate of the U.S. dollar amount that would ultimately be collected.
During the third quarter of 2015, the Company recorded additional exchange losses of $138 million in the aggregate reflecting the ongoing effect of translating
transactions and net monetary assets consistent with the second quarter. As a result of the further deterioration of economic conditions in Venezuela and continued
declines in transactions which were settled at the CENCOEX rate (subsequently replaced by the DIPRO rate), in the fourth quarter of 2015, the Company began
using the SIMADI rate, which was 198.70 VEF per U.S. at December 31, 2015, to report its Venezuelan operations. The Company also revalued its remaining net
monetary assets at the SIMADI rate (subsequently replaced with the DICOM rate), which resulted in an additional charge in the fourth quarter of 2015 of $161
million.

The Company may also use forward exchange contracts to hedge its net investment in foreign operations against movements in exchange rates. The
forward  contracts  are  designated  as  hedges  of  the  net  investment  in  a  foreign  operation.  The  Company  hedges  a  portion  of  the  net  investment  in  certain  of  its
foreign operations and measures ineffectiveness based upon changes in spot foreign exchange rates that are recorded in Other
(income)
expense,
net
. The effective
portion of the unrealized gains or losses on these contracts is recorded in foreign currency translation adjustment within Other
Comprehensive
Income
( OCI
), and
remains in Accumulated
Other
Comprehensive
Income
( AOCI)
until either the sale or complete or substantially complete liquidation of the subsidiary. The cash
flows from these contracts are reported as investing activities in the Consolidated Statement of Cash Flows.

Foreign exchange risk is also managed through the use of foreign currency debt. The Company’s senior unsecured euro-denominated notes have been
designated as, and are effective as, economic hedges of the net investment in a foreign operation. Accordingly, foreign currency transaction gains or losses due to
spot rate fluctuations on the euro-denominated debt instruments are included in foreign currency translation adjustment within OCI
.

Interest
Rate
Risk
Management

The Company may use interest rate swap contracts on certain investing and borrowing transactions to manage its net exposure to interest rate changes
and to reduce  its overall  cost  of borrowing.  The Company does not use leveraged  swaps and, in general,  does not leverage  any of its investment  activities  that
would put principal capital at risk.

In May 2016, four  interest  rate  swaps with notional  amounts  of  $250 million  each  matured.  These swaps effectively  converted  the Company’s $1.0
billion, 0.70% fixed-rate notes due 2016 to variable rate debt. At December 31, 2016 , the Company was a party to 26 pay-floating, receive-fixed interest rate swap
contracts designated as fair value hedges of fixed-rate notes in which the notional amounts match the amount of the hedged fixed-rate notes as detailed in the table
below.

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($
in
millions)

Debt Instrument

1.30% notes due 2018

5.00% notes due 2019

1.85% notes due 2020

3.875% notes due 2021

2.40% notes due 2022

2.35% notes due 2022

Par Value of Debt

Number of Interest Rate
Swaps Held

Total Swap Notional
Amount

2016

1,000

1,250

1,250

1,150

1,000

1,250

4  
3  
5  
5  
4  
5  

1,000

550

1,250

1,150

1,000

1,250

The interest rate swap contracts are designated hedges of the fair value changes in the notes attributable to changes in the benchmark London Interbank
Offered Rate (LIBOR) swap rate. The fair value changes in the notes attributable to changes in the LIBOR swap rate are recorded in interest expense and offset by
the fair value changes in the swap contracts. The cash flows from these contracts are reported as operating activities in the Consolidated Statement of Cash Flows.

The Company’s investment portfolio includes cash equivalents and short-term investments, the market values of which are not significantly affected by
changes in interest rates. The market value of the Company’s medium- to long-term fixed-rate investments is modestly affected by changes in U.S. interest rates.
Changes in medium- to long-term U.S. interest rates have a more significant impact on the market value of the Company’s fixed-rate borrowings, which generally
have longer maturities. A sensitivity analysis to measure potential changes in the market value of Merck’s investments and debt from a change in interest rates
indicated that a one percentage point increase in interest rates at December 31, 2016 and 2015 would have positively affected the net aggregate market value of
these instruments by $1.3 billion and $1.2 billion, respectively. A one percentage point decrease at December 31, 2016 and 2015 would have negatively affected
the net aggregate market value by $1.6 billion and $1.5 billion, respectively. The fair value of Merck’s debt was determined using pricing models reflecting one
percentage  point  shifts  in  the  appropriate  yield  curves.  The  fair  values  of  Merck’s  investments  were  determined  using  a  combination  of  pricing  and  duration
models.

Critical Accounting Policies

The Company’s consolidated financial statements are prepared in conformity with GAAP and, accordingly, include certain amounts that are based on
management’s best estimates and judgments. Estimates are used when accounting for amounts recorded in connection with acquisitions, including initial fair value
determinations  of  assets  and  liabilities,  primarily  IPR&D,  other  intangible  assets  and  contingent  consideration,  as  well  as  subsequent  fair  value  measurements.
Additionally,  estimates  are  used  in  determining  such  items  as  provisions  for  sales  discounts  and  returns,  depreciable  and  amortizable  lives,  recoverability  of
inventories, including those produced in preparation for product launches, amounts recorded for contingencies, environmental liabilities and other reserves, pension
and  other  postretirement  benefit  plan  assumptions,  share-based  compensation  assumptions,  restructuring  costs,  impairments  of  long-lived  assets  (including
intangible assets and goodwill) and investments, and taxes on income. Because of the uncertainty inherent in such estimates, actual results may differ from these
estimates.  Application  of  the  following  accounting  policies  result  in  accounting  estimates  having  the  potential  for  the  most  significant  impact  on  the  financial
statements.

Acquisitions

To  determine  whether  acquisitions  qualify  as  business  combinations  or  asset  acquisitions,  the  Company  makes  certain  judgments,  which  include
assessment of the inputs, processes, and outputs associated with the acquired set of activities. On October 1, 2016, the Company adopted new accounting guidance
intended to clarify whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. If the Company determines that substantially
all of the fair value of gross assets included in a transaction is concentrated in a single asset (or a group of similar assets), the assets would not represent a business.
To be considered a business, the assets in a transaction need to include an input and a substantive process that together significantly contribute to the ability to
create outputs. Prior to the adoption of the new guidance, the Company would consider an acquisition or disposition a business if there were inputs, as well as
processes that when applied to those inputs had the ability to create outputs.

In a business combination, the acquisition method of accounting requires that the assets acquired and liabilities assumed be recorded as of the date of

the acquisition at their respective fair values with limited exceptions.

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Assets  acquired  and  liabilities  assumed  in  a  business  combination  that  arise  from  contingencies  are  recognized  at  fair  value  if  fair  value  can  reasonably  be
estimated. If the acquisition date fair value of an asset acquired or liability assumed that arises from a contingency cannot be determined, the asset or liability is
recognized if probable and reasonably estimable; if these criteria are not met, no asset or liability is recognized. Fair value is defined as the exchange price that
would be  received  for  an  asset  or  paid to  transfer  a  liability  (an  exit  price)  in  the  principal  or  most  advantageous  market  for  the  asset  or  liability  in  an  orderly
transaction between market participants on the measurement date. Accordingly, the Company may be required to value assets at fair value measures that do not
reflect  the  Company’s  intended  use  of  those  assets.  Any  excess  of  the  purchase  price  (consideration  transferred)  over  the  estimated  fair  values  of  net  assets
acquired is recorded as goodwill. Transaction costs and costs to restructure the acquired company are expensed as incurred. The operating results of the acquired
business are reflected in the Company’s consolidated financial statements after the date of the acquisition. The fair values of intangible assets, including acquired
IPR&D,  are  determined  utilizing  information  available  near  the  acquisition  date  based  on  expectations  and  assumptions  that  are  deemed  reasonable  by
management. Given the considerable judgment involved in determining fair values, the Company typically obtains assistance from third-party valuation specialists
for significant items. Amounts allocated to acquired IPR&D are capitalized and accounted for as indefinite-lived intangible assets, subject to impairment testing
until completion or abandonment of the projects. Upon successful completion of each project, Merck will make a separate determination as to the then useful life of
the asset, generally determined by the period in which the substantial majority of the cash flows are expected to be generated, and begin amortization. Certain of
the Company’s business acquisitions involve the potential for future payment of consideration that is contingent upon the achievement of performance milestones,
including product development milestones and royalty payments on future product sales. The fair value of contingent consideration liabilities is determined at the
acquisition date using unobservable inputs. These inputs include the estimated amount and timing of projected cash flows, the probability of success (achievement
of the contingent event) and the risk-adjusted discount rate used to present value the probability-weighted cash flows. Subsequent to the acquisition date, at each
reporting period, the contingent consideration liability is remeasured at current fair value with changes (either expense or income) recorded in earnings. Changes in
any of the inputs may result in a significantly different fair value adjustment.

The judgments made in determining estimated fair values assigned to assets acquired and liabilities assumed in a business combination, as well as asset

lives, can materially affect the Company’s results of operations.

If  the  Company  determines  the  transaction  will  not  be  accounted  for  as  an  acquisition  of  a  business,  the  transaction  will  be  accounted  for  as  an
acquisition of assets rather than a business combination and, therefore, no goodwill will be recorded. In an asset acquisition, acquired IPR&D with no alternative
future use is charged to expense at the acquisition date.

The fair values of identifiable intangible assets related to currently marketed products and product rights are primarily determined by using an income
approach through which fair value is estimated based on each asset’s discounted projected net cash flows. The Company’s estimates of market participant net cash
flows  consider  historical  and  projected  pricing,  margins  and  expense  levels;  the  performance  of  competing  products  where  applicable;  relevant  industry  and
therapeutic  area  growth drivers  and  factors;  current  and  expected  trends  in  technology  and product  life  cycles;  the  time  and investment  that  will  be  required  to
develop products and technologies; the ability to obtain marketing and regulatory approvals; the ability to manufacture and commercialize the products; the extent
and timing of potential new product introductions by the Company’s competitors; and the life of each asset’s underlying patent, if any. The net cash flows are then
probability-adjusted where appropriate to consider the uncertainties associated with the underlying assumptions, as well as the risk profile of the net cash flows
utilized in the valuation. The probability-adjusted future net cash flows of each product are then discounted to present value utilizing an appropriate discount rate.

The fair values of identifiable intangible assets related to IPR&D are also determined using an income approach, through which fair value is estimated
based on each asset’s probability-adjusted future net cash flows, which reflect the different stages of development of each product and the associated probability of
successful completion. The net cash flows are then discounted to present value using an appropriate discount rate.

Revenue
Recognition

Revenues from sales of products are recognized when title and risk of loss passes to the customer, typically at time of delivery. Recognition of revenue

also requires reasonable assurance of collection of sales proceeds and

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completion  of  all  performance  obligations.  Domestically,  sales  discounts  are  issued  to  customers  as  direct  discounts  at  the  point-of-sale,  indirectly  through  an
intermediary  wholesaler, known as chargebacks, or indirectly in the form of rebates. Additionally, sales are generally made with a limited right of return under
certain  conditions.  Revenues  are  recorded  net  of  provisions  for  sales  discounts  and  returns,  which  are  established  at  the  time  of  sale.  In  addition,  revenues  are
recorded net of time value of money discounts for customers for which collection of accounts receivable is expected to be in excess of one year.

The  provision  for  aggregate  indirect  customer  discounts  covers  chargebacks  and  rebates.  Chargebacks  are  discounts  that  occur  when  a  contracted
customer purchases directly through an intermediary wholesaler. The contracted customer generally purchases product at its contracted price plus a mark-up from
the wholesaler. The wholesaler, in turn, charges the Company back for the difference between the price initially paid by the wholesaler and the contract price paid
to the wholesaler by the customer. The provision for chargebacks is based on expected sell-through levels by the Company’s wholesale customers to contracted
customers, as well as estimated wholesaler inventory levels. Rebates are amounts owed based upon definitive contractual agreements or legal requirements with
private  sector  and  public  sector  (Medicaid  and  Medicare  Part  D)  benefit  providers,  after  the  final  dispensing  of  the  product  by  a  pharmacy  to  a  benefit  plan
participant. The provision is based on expected payments, which are driven by patient usage and contract performance by the benefit provider customers.

The Company uses historical customer segment mix, adjusted for other known events, in order to estimate the expected provision. Amounts accrued for
aggregate  indirect  customer  discounts  are  evaluated  on  a  quarterly  basis  through  comparison  of  information  provided  by  the  wholesalers,  health  maintenance
organizations, pharmacy benefit managers and other customers to the amounts accrued. Adjustments are recorded when trends or significant events indicate that a
change in the estimated provision is appropriate.

The Company continually monitors its provision for aggregate indirect customer discounts. There were no material adjustments to estimates associated

with the aggregate indirect customer discount provision in 2016 , 2015 or 2014 .

Summarized information about changes in the aggregate indirect customer discount accrual related to U.S. sales is as follows:

($
in
millions)

Balance January 1

Current provision

Adjustments to prior years

Payments

Balance December 31

2016

2015

2,798   $

9,831  

(169)  

(9,515)  

2,945   $

2,154

8,068

(77)

(7,347)

2,798

$

$

Accruals for chargebacks are reflected as a direct reduction to accounts receivable and accruals for rebates as current liabilities. The accrued balances
relative  to  these  provisions  included  in  Accounts 
receivable
 and  Accrued 
and 
other 
current 
liabilities
 were  $196  million  and  $2.7  billion  ,  respectively,  at
December 31, 2016 and were $145 million and $2.7 billion , respectively, at December 31, 2015 .

The  Company  maintains  a  returns  policy  that  allows  its  U.S.  pharmaceutical  customers  to  return  product  within  a  specified  period  prior  to  and
subsequent to the expiration date (generally, three to six months before and 12 months after product expiration). The estimate of the provision for returns is based
upon historical experience with actual returns. Additionally, the Company considers factors such as levels of inventory in the distribution channel, product dating
and expiration period, whether products have been discontinued, entrance in the market of additional generic competition, changes in formularies or launch of over-
the-counter products, among others. The product returns provision for U.S. pharmaceutical sales as a percentage of U.S. net pharmaceutical sales was 1.4% in 2016
, 1.5% in 2015 and 1.7% in 2014 .

Through  its  distribution  programs  with  U.S.  wholesalers,  the  Company  encourages  wholesalers  to  align  purchases  with  underlying  demand  and
maintain inventories below specified levels. The terms of the programs allow the wholesalers to earn fees upon providing visibility into their inventory levels, as
well  as  by  achieving  certain  performance  parameters  such  as  inventory  management,  customer  service  levels,  reducing  shortage  claims  and  reducing  product
returns. Information provided through the wholesaler distribution programs includes items such as sales trends, inventory on-hand, on-order quantity and product
returns.

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Wholesalers generally provide only the above mentioned data to the Company, as there is no regulatory requirement to report lot level information to
manufacturers,  which  is  the  level  of  information  needed  to  determine  the  remaining  shelf  life  and  original  sale  date  of  inventory.  Given  current  wholesaler
inventory levels, which are generally less than a month, the Company believes that collection of order lot information across all wholesale customers would have
limited use in estimating sales discounts and returns.

Inventories
Produced
in
Preparation
for
Product
Launches

The  Company  capitalizes  inventories  produced  in  preparation  for  product  launches  sufficient  to  support  estimated  initial  market  demand.  Typically,
capitalization of such inventory does not begin until the related product candidates are in Phase 3 clinical trials and are considered to have a high probability of
regulatory approval. The Company monitors the status of each respective product within the regulatory approval process; however, the Company generally does
not  disclose  specific  timing  for  regulatory  approval.  If  the  Company  is  aware  of  any  specific  risks  or  contingencies  other  than  the  normal  regulatory  approval
process  or  if  there  are  any  specific  issues  identified  during  the  research  process  relating  to  safety,  efficacy,  manufacturing,  marketing  or  labeling,  the  related
inventory would generally not be capitalized. Expiry dates of the inventory are affected by the stage of completion. The Company manages the levels of inventory
at each stage to optimize the shelf life of the inventory in relation to anticipated market demand in order to avoid product expiry issues. For inventories that are
capitalized,  anticipated  future  sales  and  shelf  lives  support  the  realization  of  the  inventory  value  as  the  inventory  shelf  life  is  sufficient  to  meet  initial  product
launch  requirements.  Inventories  produced  in  preparation  for  product  launches  capitalized  at  December  31, 2016  and 2015 were $80 million and $63 million ,
respectively.

Contingencies
and
Environmental
Liabilities

The Company is involved in various claims and legal proceedings of a nature considered normal to its business, including product liability, intellectual
property and commercial litigation, as well as certain additional matters (see Note 10 to the consolidated financial statements.) The Company records accruals for
contingencies  when  it  is  probable  that  a  liability  has  been  incurred  and  the  amount  can  be  reasonably  estimated.  These  accruals  are  adjusted  periodically  as
assessments  change  or  additional  information  becomes  available.  For  product  liability  claims,  a  portion  of  the  overall  accrual  is  actuarially  determined  and
considers  such  factors  as  past  experience,  number  of  claims  reported  and  estimates  of  claims  incurred  but  not  yet  reported.  Individually  significant  contingent
losses are accrued when probable and reasonably estimable.

Legal defense costs expected to be incurred in connection with a loss contingency are accrued when probable and reasonably estimable. Some of the
significant  factors  considered  in  the  review  of  these  legal  defense  reserves  are  as  follows:  the  actual  costs  incurred  by  the  Company;  the  development  of  the
Company’s  legal  defense  strategy  and  structure  in  light  of  the  scope  of  its  litigation;  the  number  of  cases  being  brought  against  the  Company;  the  costs  and
outcomes of completed trials and the most current information regarding anticipated timing, progression, and related costs of pre-trial activities and trials in the
associated  litigation.  The  amount  of  legal  defense  reserves  as  of  December  31, 2016  and 2015 of approximately $185 million and $245 million , respectively,
represents the Company’s best estimate of the minimum amount of defense costs to be incurred in connection with its outstanding litigation; however, events such
as  additional  trials  and  other  events  that  could  arise  in  the  course  of  its  litigation  could  affect  the  ultimate  amount  of  legal  defense  costs  to  be  incurred  by  the
Company. The Company will continue to monitor its legal defense costs and review the adequacy of the associated reserves and may determine to increase the
reserves at any time in the future if, based upon the factors set forth, it believes it would be appropriate to do so.

The Company and its subsidiaries are parties to a number of proceedings brought under the Comprehensive Environmental Response, Compensation
and  Liability  Act,  commonly  known  as  Superfund,  and  other  federal  and  state  equivalents.  When  a  legitimate  claim  for  contribution  is  asserted,  a  liability  is
initially  accrued  based  upon  the  estimated  transaction  costs  to  manage  the  site.  Accruals  are  adjusted  as  site  investigations,  feasibility  studies  and  related  cost
assessments of remedial techniques are completed, and as the extent to which other potentially responsible parties who may be jointly and severally liable can be
expected to contribute is determined.

The Company is also remediating environmental contamination resulting from past industrial activity at certain of its sites and takes an active role in
identifying  and  accruing  for  these  costs.  In  the  past,  Merck  performed  a  worldwide  survey  to  assess  all  sites  for  potential  contamination  resulting  from  past
industrial activities. Where assessment indicated that physical investigation was warranted, such investigation was performed, providing a better evaluation of the
need for remedial action. Where such need was identified, remedial action was then initiated. As

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definitive  information  became  available  during  the  course  of  investigations  and/or  remedial  efforts  at  each  site,  estimates  were  refined  and  accruals  were
established or adjusted accordingly. These estimates and related accruals continue to be refined annually.

The Company believes that there are no compliance issues associated with applicable environmental laws and regulations that would have a material
adverse  effect  on  the  Company.  Expenditures  for  remediation  and  environmental  liabilities  were  $11  million  in 2016 ,  and  are  estimated  at  $44  million  in the
aggregate for the years 2017 through 2021 . In management’s opinion, the liabilities for all environmental matters that are probable and reasonably estimable have
been accrued and totaled $83 million and $109 million at December 31, 2016 and 2015 , respectively. These liabilities are undiscounted, do not consider potential
recoveries from other parties and will be paid out over the periods of remediation for the applicable sites, which are expected to occur primarily over the next 15
 years. Although it is not possible to predict with certainty the outcome of these matters, or the ultimate costs of remediation, management does not believe that any
reasonably possible expenditures that may be incurred in excess of the liabilities accrued should exceed $64 million in the aggregate. Management also does not
believe that these expenditures should result in a material adverse effect on the Company’s financial position, results of operations, liquidity or capital resources for
any year.

Share-Based
Compensation

The Company expenses all share-based payment awards to employees, including grants of stock options, over the requisite service period based on the
grant date fair value of the awards. The Company determines the fair value of certain share-based awards using the Black-Scholes option-pricing model which uses
both  historical  and  current  market  data  to  estimate  the  fair  value.  This  method  incorporates  various  assumptions  such  as  the  risk-free  interest  rate,  expected
volatility, expected dividend yield and expected life of the options. Total pretax share-based compensation expense was $300 million in 2016 , $299 million in
2015 and $278 million in 2014 . At December 31, 2016 , there was $443 million of total pretax unrecognized compensation expense related to nonvested stock
option,  restricted  stock  unit  and  performance  share  unit  awards  which  will  be  recognized  over  a  weighted  average  period  of  1.9  years. For segment reporting,
share-based compensation costs are unallocated expenses.

Pensions
and
Other
Postretirement
Benefit
Plans

Net periodic benefit cost for pension and other postretirement benefit plans totaled $56 million in 2016 , $253 million in 2015 and $169 million in 2014
. Pension and other postretirement benefit plan information for financial reporting purposes is calculated using actuarial assumptions including a discount rate for
plan  benefit  obligations  and  an  expected  rate  of  return  on  plan  assets.  The  changes  in  net  periodic  benefit  cost  year  over  year  for  pension  plans  are  largely
attributable to changes in the discount rate affecting net amortization. The decrease in net periodic benefit cost for other postretirement benefit plans in 2016 as
compared with 2015 is largely attributable to changes in retiree medical benefits approved by the Company in December 2015.

The Company reassesses its benefit plan assumptions on a regular basis. For both the pension and other postretirement benefit plans, the discount rate is
evaluated on measurement dates and modified to reflect the prevailing market rate of a portfolio of high-quality fixed-income debt instruments that would provide
the future cash flows needed to pay the benefits included in the benefit obligation as they come due. The discount rates for the Company’s U.S. pension and other
postretirement benefit plans ranged from 3.40% to 4.30% at December 31, 2016, compared with a range of 3.80% to 4.80% at December 31, 2015 .

The expected rate of return for both the pension and other postretirement benefit plans represents the average rate of return to be earned on plan assets
over the period the benefits included in the benefit obligation are to be paid. In developing the expected rate of return, the Company considers long-term compound
annualized  returns  of  historical  market  data  as  well  as  actual  returns  on  the  Company’s  plan  assets.  Using  this  reference  information,  the  Company  develops
forward-looking return expectations for each asset category and a weighted-average expected long-term rate of return for a target portfolio allocated across these
investment categories. The expected portfolio performance reflects the contribution of active management as appropriate. For 2017 , the expected rate of return for
the Company’s U.S. pension and other postretirement benefit plans will range from 8.00% to 8.75% , as compared to a range of 7.30% to 8.75% in 2016 .

The Company has established investment guidelines for its U.S. pension and other postretirement plans to create an asset allocation that is expected to
deliver a rate of return sufficient to meet the long-term obligation of each plan, given an acceptable level of risk. The target investment portfolio of the Company’s
U.S. pension and other

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postretirement benefit plans is allocated 40% to 60% in U.S. equities, 20% to 40% in international equities, 15% to 25% in fixed-income investments, and up to 5%
in  cash  and  other  investments.  The  portfolio’s  equity  weighting  is  consistent  with  the  long-term  nature  of  the  plans’  benefit  obligations.  The  expected  annual
standard deviation of returns of the target portfolio, which approximates 13% , reflects both the equity allocation and the diversification benefits among the asset
classes in which the portfolio invests. For non-U.S. pension plans, the targeted investment portfolio varies based on the duration of pension liabilities and local
government rules and regulations. Although a significant percentage of plan assets are invested in U.S. equities, concentration risk is mitigated through the use of
strategies that are diversified within management guidelines.

Actuarial assumptions are based upon management’s best estimates and judgment. A reasonably possible change of plus (minus) 25 basis points in the
discount rate assumption, with other assumptions held constant, would have an estimated $81 million favorable (unfavorable) impact on the Company’s current
year net periodic benefit cost. A reasonably possible change of plus (minus) 25 basis points in the expected rate of return assumption, with other assumptions held
constant, would have an estimated $46 million favorable (unfavorable) impact on Merck’s current year net periodic benefit cost. Required funding obligations for
2017 relating to the Company’s pension and other postretirement benefit plans are not expected to be material. The preceding hypothetical changes in the discount
rate and expected rate of return assumptions would not impact the Company’s funding requirements.

Net loss amounts, which reflect experience differentials primarily relating to differences between expected and actual returns on plan assets as well as
the effects of changes in actuarial assumptions, are recorded as a component of AOCI
. Expected returns for pension plans are based on a calculated market-related
value  of  assets.  Under  this  methodology,  asset  gains/losses  resulting  from  actual  returns  that  differ  from  the  Company’s  expected  returns  are  recognized  in  the
market-related value of assets ratably over a five-year period. Also, net loss amounts in AOCI
in excess of certain thresholds are amortized into net periodic benefit
cost over the average remaining service life of employees.

Restructuring
Costs

Restructuring costs have been recorded in connection with restructuring programs designed to streamline the Company’s cost structure. As a result, the
Company  has  made  estimates  and  judgments  regarding  its  future  plans,  including  future  termination  benefits  and  other  exit  costs  to  be  incurred  when  the
restructuring actions take place. When accruing these costs, the Company will recognize the amount within a range of costs that is the best estimate  within the
range. When no amount within the range is a better estimate than any other amount, the Company recognizes the minimum amount within the range. In connection
with these actions, management also assesses the recoverability of long-lived assets employed in the business. In certain instances, asset lives have been shortened
based  on  changes  in  the  expected  useful  lives  of  the  affected  assets.  Severance  and  other  related  costs  are  reflected  within  Restructuring 
costs
 . Asset-related
charges are reflected within Materials
and
production
costs, Marketing
and
administrative
expenses and Research
and
development
expenses depending upon the
nature of the asset.

Impairments
of
Long-Lived
Assets

The  Company  assesses  changes  in  economic,  regulatory  and  legal  conditions  and  makes  assumptions  regarding  estimated  future  cash  flows  in

evaluating the value of the Company’s property, plant and equipment, goodwill and other intangible assets.

The Company periodically evaluates whether current facts or circumstances indicate that the carrying values of its long-lived assets to be held and used
may  not  be  recoverable.  If  such  circumstances  are  determined  to  exist,  an  estimate  of  the  undiscounted  future  cash  flows  of  these  assets,  or  appropriate  asset
groupings, is compared to the carrying value to determine whether an impairment exists. If the asset is determined to be impaired, the loss is measured based on the
difference between the asset’s fair value and its carrying value. If quoted market prices are not available, the Company will estimate fair value using a discounted
value of estimated future cash flows approach.

Goodwill represents the excess of the consideration transferred over the fair value of net assets of businesses acquired and is assigned to reporting units.
The Company tests its goodwill for impairment on at least an annual basis, or more frequently if impairment indicators exist, by first assessing qualitative factors to
determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. Some of the factors considered in the assessment
include general macroeconomic conditions, conditions specific to the industry and market, cost factors which could have a significant effect on earnings or cash
flows,  the  overall  financial  performance  of  the  reporting  unit,  and  whether  there  have  been  sustained  declines  in  the  Company’s  share  price.  Additionally,  the
Company evaluates

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the extent to which the fair value exceeded the carrying value of the reporting unit at the last date a valuation was performed. If the Company concludes it is more
likely than not that the fair value of a reporting unit is less than its carrying amount, a quantitative fair value test is performed.

Other  acquired  intangible  assets  (excluding  IPR&D)  are  recorded  at  fair  value,  assigned  an  estimated  useful  life,  and  are  amortized  primarily  on  a
straight-line basis over their estimated useful lives. When events or circumstances warrant a review, the Company will assess recoverability from future operations
using pretax undiscounted cash flows derived from the lowest appropriate asset groupings. Impairments are recognized in operating results to the extent that the
carrying value of the intangible asset exceeds its fair value, which is determined based on the net present value of estimated future cash flows.

IPR&D that the Company acquires through business combinations represents the fair value assigned to incomplete research projects which, at the time
of acquisition, have not reached technological feasibility. The amounts are capitalized and accounted for as indefinite-lived intangible assets, subject to impairment
testing until completion or abandonment of the project. The Company tests IPR&D for impairment at least annually, or more frequently if impairment indicators
exist, by first assessing qualitative factors to determine whether it is more likely than not that the fair value of the IPR&D intangible asset is less than its carrying
amount. If the Company concludes it is more likely than not that the fair value is less than the carrying amount, a quantitative test that compares the fair value of
the  IPR&D  intangible  asset  with  its  carrying  value  is  performed.  For  impairment  testing  purposes,  the  Company  may  combine  separately  recorded  IPR&D
intangible assets into one unit of account based on the relevant facts and circumstances. Generally, the Company will combine IPR&D intangible assets for testing
purposes if they operate as a single asset and are essentially inseparable. If the fair value is less than the carrying amount, an impairment loss is recognized within
the Company’s operating results.

The judgments made in evaluating impairment of long-lived intangibles can materially affect the Company’s results of operations.

Impairments
of
Investments

The Company reviews its investments for impairments based on the determination of whether the decline in market value of the investment below the
carrying value is other-than-temporary. The Company considers available evidence in evaluating potential impairments of its investments, including the duration
and extent to which fair value is less than cost and, for equity securities, the Company’s ability and intent to hold the investments. For debt securities, an other-
than-temporary impairment has occurred if the Company does not expect to recover the entire amortized cost basis of the debt security. If the Company does not
intend to sell the impaired debt security, and it is not more likely than not it will be required to sell the debt security before the recovery of its amortized cost basis,
the amount of the other-than-temporary impairment recognized in earnings is limited to the portion attributed to credit loss. The remaining portion of the other-
than-temporary impairment related to other factors is recognized in OCI
.

Taxes
on
Income

The Company’s effective tax rate is based on pretax income, statutory tax rates and tax planning opportunities available in the various jurisdictions in
which  the  Company  operates.  An  estimated  effective  tax  rate  for  a  year  is  applied  to  the  Company’s  quarterly  operating  results.  In  the  event  that  there  is  a
significant unusual or one-time item recognized, or expected to be recognized, in the Company’s quarterly operating results, the tax attributable to that item would
be separately calculated and recorded at the same time as the unusual or one-time item. The Company considers the resolution of prior year tax matters to be such
items. Significant judgment is required in determining the Company’s tax provision and in evaluating its tax positions. The recognition and measurement of a tax
position  is  based  on  management’s  best  judgment  given  the  facts,  circumstances  and  information  available  at  the  reporting  date.  The  Company  evaluates  tax
positions to determine whether the benefits of tax positions are more likely than not of being sustained upon audit based on the technical merits of the tax position.
For tax positions that are more likely than not of being sustained upon audit, the Company recognizes the largest amount of the benefit that is greater than 50%
likely of being realized upon ultimate settlement in the financial statements. For tax positions that are not more likely than not of being sustained upon audit, the
Company does not recognize any portion of the benefit in the financial statements. If the more likely than not threshold is not met in the period for which a tax
position is taken, the Company may subsequently recognize the benefit of that tax position if the tax matter is effectively settled, the statute of limitations expires,
or if the more likely than not threshold is met in a subsequent period (see Note 15 to the consolidated financial statements.)

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Tax  regulations  require  items  to  be  included  in  the  tax  return  at  different  times  than  the  items  are  reflected  in  the  financial  statements.  Timing
differences create deferred tax assets and liabilities. Deferred tax assets generally represent items that can be used as a tax deduction or credit in the tax return in
future years for which the Company has already recorded the tax benefit in the financial statements. The Company establishes valuation allowances for its deferred
tax assets when the amount of expected future taxable income is not likely to support the use of the deduction or credit. Deferred tax liabilities generally represent
tax expense recognized in the financial statements for which payment has been deferred or expense for which the Company has already taken a deduction on the
tax  return,  but  has  not  yet  recognized  as  expense  in  the  financial  statements.  At  December  31,  2016  ,  foreign  earnings  of  $63.1  billion  have  been  retained
indefinitely by subsidiary companies for reinvestment; therefore, no provision has been made for income taxes that would be payable upon the distribution of such
earnings and it would not be practicable to determine the amount of the related unrecognized deferred income tax liability.

Recently Issued Accounting Standards

In May 2014, the Financial Accounting Standards Board (FASB) issued amended accounting guidance on revenue recognition that will be applied to all
contracts with customers. The objective of the new guidance is to improve comparability of revenue recognition practices across entities and to provide more useful
information to users of financial statements through improved disclosure requirements. In August 2015, the FASB approved a one-year deferral of the effective
date making this guidance effective for interim and annual periods beginning in 2018. The new standard permits two methods of adoption: retrospectively to each
prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of adopting the guidance being recognized at the date of
initial  application  (modified  retrospective  method).  The  Company  will  adopt  the  new  standard  on  January  1,  2018  and  currently  plans  to  use  the  modified
retrospective method. The majority of the Company’s business is ship and bill and, on that primary revenue stream, Merck does not expect significant differences.
However,  the  Company’s  analysis  is  preliminary  and  subject  to  change.  Merck  has  not  completed  its  assessment  of  multiple  element  arrangements  and  certain
discount and trade promotion programs.

In January 2016, the FASB issued revised guidance for the accounting and reporting of financial instruments. The new guidance requires that equity
investments with readily determinable fair values currently classified as available for sale be measured at fair value with changes in fair value recognized in net
income. The new guidance also simplifies  the impairment  testing of equity investments  without readily  determinable  fair values and changes certain  disclosure
requirements. This guidance is effective for interim and annual periods beginning in 2018. Early adoption is not permitted. The Company is currently assessing the
impact of adoption on its consolidated financial statements.

In  February  2016,  the  FASB  issued  new  accounting  guidance  for  the  accounting  and  reporting  of  leases.  The  new  guidance  requires  that  lessees
recognize a right-of-use asset and a lease liability recorded on the balance sheet for each of its leases (other than leases that meet the definition of a short-term
lease).    Leases  will  be  classified  as  either  operating  or  finance.  Operating  leases  will  result  in  straight-line  expense  in  the  income  statement  (similar  to  current
operating leases) while finance leases will result in more expense being recognized in the earlier years of the lease term (similar to current capital leases). The new
guidance  will  be  effective  for  interim  and  annual  periods  beginning  in  2019.  Early  adoption  is  permitted.  The  Company  is  currently  evaluating  the  impact  of
adoption on its consolidated financial statements.

In June 2016, the FASB issued amended guidance on the accounting for credit losses on financial instruments within its scope. The guidance introduces
an expected loss model for estimating credit losses, replacing the incurred loss model. The new guidance also changes the impairment model for available-for-sale
debt  securities,  requiring  the  use  of  an  allowance  to  record  estimated  credit  losses  (and  subsequent  recoveries).  The  new  guidance  is  effective  for  interim  and
annual  periods  beginning  in  2020,  with  earlier  application  permitted  in  2019.  The  Company  is  currently  evaluating  the  impact  of  adoption  on  its  consolidated
financial statements.

In August 2016, the FASB issued guidance on the classification of certain cash receipts and payments in the statement of cash flows intended to reduce
diversity  in  practice.  The  guidance  is  effective  for  interim  and  annual  periods  beginning  in  2018.  Early  adoption  is  permitted.  The  guidance  is  to  be  applied
retrospectively to all periods presented but may be applied prospectively if retrospective application would be impracticable. The Company is currently evaluating
the effect of the standard on its Consolidated Statement of Cash Flows.

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In  October  2016,  the  FASB  issued  guidance  on  the  accounting  for  the  income  tax  consequences  of  intra-entity  transfers  of  assets  other  than
inventory. Under existing guidance, the recognition of current and deferred income taxes for an intra-entity asset transfer is prohibited until the asset has been sold
to  a  third  party.  The  new  guidance  will  require  the  recognition  of  the  income  tax  consequences  of  an  intra-entity  transfer  of  an  asset  (with  the  exception  of
inventory) when the intra-entity transfer occurs. The guidance is effective for interim and annual periods beginning in 2018. Early adoption is permitted. The new
guidance is to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings in the beginning of the period of
adoption. The Company does not anticipate the adoption of the new guidance will have a material effect on its consolidated financial statements.

In November 2016, the FASB issued guidance requiring that amounts generally described as restricted cash and restricted cash equivalents be included
with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The guidance is
effective for interim and annual periods beginning in 2018 and should be applied using a retrospective transition method to each period presented. Early adoption is
permitted. The Company is currently evaluating the effect of the standard on its Consolidated Statement of Cash Flows.

In January 2017, the FASB issued guidance that provides for the elimination of Step 2 from the goodwill impairment test. If impairment charges are
recognized,  the  amount  recorded  will  be  the  amount  by  which  the  carrying  amount  exceeds  the  reporting  unit’s  fair  value  with  certain  limitations.  The  new
guidance is effective for interim and annual periods in 2021. The Company does not anticipate the adoption of the new guidance will have a material effect on its
consolidated financial statements.

Cautionary Factors That May Affect Future Results

This report and other written reports and oral statements made from time to time by the Company may contain so-called “forward-looking statements,”
all of which are based on management’s current expectations and are subject to risks and uncertainties which may cause results to differ materially from those set
forth  in  the  statements.  One  can  identify  these  forward-looking  statements  by  their  use  of  words  such  as  “anticipates,”  “expects,”  “plans,”  “will,”  “estimates,”
“forecasts,” “projects” and other words of similar meaning. One can also identify them by the fact that they do not relate strictly to historical or current facts. These
statements  are  likely  to  address  the  Company’s  growth  strategy,  financial  results,  product  development,  product  approvals,  product  potential  and  development
programs.  One  must  carefully  consider  any  such  statement  and  should  understand  that  many  factors  could  cause  actual  results  to  differ  materially  from  the
Company’s forward-looking statements. These factors include inaccurate assumptions and a broad variety of other risks and uncertainties, including some that are
known and some that are not. No forward-looking statement can be guaranteed and actual future results may vary materially.

The  Company  does  not  assume  the  obligation  to  update  any  forward-looking  statement.  One  should  carefully  evaluate  such  statements  in  light  of
factors, including risk factors, described in the Company’s filings with the Securities and Exchange Commission, especially on this Form 10-K and Forms 10-Q
and 8-K. In Item 1A. “Risk Factors” of this annual report on Form 10-K the Company discusses in more detail various important risk factors that could cause actual
results to differ from expected or historic results. The Company notes these factors for investors as permitted by the Private Securities Litigation Reform Act of
1995.  One  should  understand  that  it  is  not  possible  to  predict  or  identify  all  such  factors.  Consequently,  the  reader  should  not  consider  any  such  list  to  be  a
complete statement of all potential risks or uncertainties.

Item 7a. Quantitative and Qualitative Disclosures about Market Risk.

The information required by this Item is incorporated by reference to the discussion under “Financial Instruments Market Risk Disclosures” in Item 7.

“Management’s Discussion and Analysis of Financial Condition and Results of Operations.”

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Item 8.

Financial Statements and Supplementary Data.                

(a)

Financial Statements

The  consolidated  balance  sheet  of  Merck  &  Co., Inc.  and subsidiaries  as  of  December 31, 2016 and 2015 , and the related consolidated statements of
income,  of  comprehensive  income,  of  equity  and  of  cash  flows  for  each  of  the  three  years  in  the  period  ended  December  31, 2016  ,  the  notes  to  consolidated
financial statements, and the report dated February 28, 2017 of PricewaterhouseCoopers LLP, independent registered public accounting firm, are as follows:

Consolidated Statement of Income
Merck & Co., Inc. and Subsidiaries
Years
Ended
December
31
($
in
millions
except
per
share
amounts)

Sales

Costs, Expenses and Other

Materials and production

Marketing and administrative

Research and development

Restructuring costs

Other (income) expense, net

Income Before Taxes

Taxes on Income

Net Income

Less: Net Income Attributable to Noncontrolling Interests

Net Income Attributable to Merck & Co., Inc.

Basic Earnings per Common Share Attributable to Merck & Co., Inc. Common Shareholders

Earnings per Common Share Assuming Dilution Attributable to Merck & Co., Inc. Common Shareholders

Consolidated Statement of Comprehensive Income
Merck & Co., Inc. and Subsidiaries
Years
Ended
December
31
($
in
millions)

Net Income Attributable to Merck & Co., Inc.

Other Comprehensive Income (Loss) Net of Taxes:

Net unrealized (loss) gain on derivatives, net of reclassifications

Net unrealized (loss) gain on investments, net of reclassifications

Benefit plan net (loss) gain and prior service (cost) credit, net of amortization

Cumulative translation adjustment

2016

2015

2014

$

39,807   $

39,498   $

42,237

13,891  

9,762  

10,124  

651  

720  

14,934  

10,313  

6,704  

619  

16,768

11,606

7,180

1,013

1,527  

(11,613)

35,148  

34,097  

4,659  

718  

3,941  

21  

5,401  

942  

4,459  

17  

24,954

17,283

5,349

11,934

14

$

$

$

3,920   $

4,442   $

11,920

1.42   $

1.41   $

1.58   $

1.56   $

4.12

4.07

2016

2015

2014

$

3,920   $

4,442   $

11,920

(66)  

(44)  

(799)  

(169)  

(1,078)  

(126)  

(70)  

579  

(208)  

175  

398

57

(2,077)

(504)

(2,126)

Comprehensive Income Attributable to Merck & Co., Inc.

$

2,842   $

4,617   $

9,794

The
accompanying
notes
are
an
integral
part
of
these
consolidated
financial
statements.

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Table of Contents

Consolidated Balance Sheet
Merck & Co., Inc. and Subsidiaries
December
31
($
in
millions
except
per
share
amounts)

Assets

Current Assets

Cash and cash equivalents

Short-term investments

Accounts receivable (net of allowance for doubtful accounts of $195 in 2016

and $165 in 2015) (excludes accounts receivable of $10 in 2015
classified in Other assets)

Inventories (excludes inventories of $1,117 in 2016 and $1,569

in 2015 classified in Other assets - see Note 6)

Other current assets

Total current assets

Investments

Property, Plant and Equipment (at cost)

Land

Buildings

Machinery, equipment and office furnishings

Construction in progress

Less: accumulated depreciation

Goodwill

Other Intangibles, Net

Other Assets

Liabilities and Equity

Current Liabilities

Loans payable and current portion of long-term debt

Trade accounts payable

Accrued and other current liabilities

Income taxes payable

Dividends payable

Total current liabilities

Long-Term Debt

Deferred Income Taxes

Other Noncurrent Liabilities

Merck & Co., Inc. Stockholders’ Equity

Common stock, $0.50 par value

Authorized - 6,500,000,000 shares
Issued - 3,577,103,522 shares in 2016 and 2015

Other paid-in capital

Retained earnings

Accumulated other comprehensive loss

Less treasury stock, at cost:

828,372,200 shares in 2016 and 795,975,449 shares in 2015

Total Merck & Co., Inc. stockholders’ equity

Noncontrolling Interests

Total equity

2016

2015

$

6,515   $

7,826  

8,524

4,903

7,018  

6,484

$

$

4,866  

4,389  

30,614  

11,416  

412  

11,439  

14,053  

1,871  

27,775  

15,749  

12,026  

18,162  

17,305  

5,854  

4,700

5,140

29,751

13,039

490

12,154

14,261

1,525

28,430

15,923

12,507

17,723

22,602

6,055

95,377   $

101,677

568   $

2,807  

10,274  

2,239  

1,316  

17,204  

24,274  

5,077  

8,514  

1,788  

39,939  

44,133  

(5,226)  

80,634  

40,546  

40,088  

220  

2,583

2,533

11,216

1,560

1,309

19,201

23,829

6,535

7,345

1,788

40,222

45,348

(4,148)

83,210

38,534

44,676

91

40,308  

44,767

$

95,377   $

101,677

 
 
 
   
 
   
 
   
 
 
 
 
   
 
   
 
   
 
 
The
accompanying
notes
are
an
integral
part
of
this
consolidated
financial
statement.

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Table of Contents

Consolidated Statement of Equity
Merck & Co., Inc. and Subsidiaries
Years
Ended
December
31
($
in
millions
except
per
share
amounts)

Balance January 1, 2014

Net income attributable to Merck & Co., Inc.

Other comprehensive loss, net of tax

Cash dividends declared on common stock ($1.77 per share)

Treasury stock shares purchased

AstraZeneca option exercise

Net income attributable to noncontrolling interests

Distributions attributable to noncontrolling interests

Share-based compensation plans and other

Balance December 31, 2014

Net income attributable to Merck & Co., Inc.

Other comprehensive income, net of tax

Cash dividends declared on common stock ($1.81 per share)

Treasury stock shares purchased

Changes in noncontrolling ownership interests

Net income attributable to noncontrolling interests

Distributions attributable to noncontrolling interests

Share-based compensation plans and other

Balance December 31, 2015

Net income attributable to Merck & Co., Inc.

Other comprehensive loss, net of tax

Cash dividends declared on common stock ($1.85 per share)

Treasury stock shares purchased

Changes in noncontrolling ownership interests

Net income attributable to noncontrolling interests

Distributions attributable to noncontrolling interests

Share-based compensation plans and other

Balance December 31, 2016

Common
Stock

$1,788

Other
Paid-In
Capital
  $ 40,508

Retained
Earnings

Accumulated
Other
Comprehensive
Loss

Treasury
Stock

Non-
controlling
Interests

Total

  $

39,257

  $

(2,197)

  $

(29,591)

  $

2,561

  $

—  
—  
—  
—  
—  
—  
—  
—  

—  
—  
—  
—  
—  
—  
—  

(85)

1,788

40,423

—  
—  
—  
—  
—  
—  
—  
—  

—  
—  
—  
—  

(20)
—  
—  

(181)

1,788

40,222

—  
—  
—  
—  
—  
—  
—  
—  

—  
—  
—  
—  
—  
—  
—  

(283)
  $ 39,939

11,920

—  

(5,156)

—  
—  
—  
—  
—  

46,021

4,442

—  

(5,115)

—  
—  
—  
—  
—  

45,348

3,920

—  

(5,135)

—  
—  
—  
—  
—  

—  

(2,126)

—  
—  
—  
—  
—  
—  

—  
—  
—  

(7,703)

—  
—  
—  

2,032

(4,323)

(35,262)

—  

175
—  
—  
—  
—  
—  
—  

—  
—  
—  

(4,186)

—  
—  
—  

914

(4,148)

(38,534)

—  

(1,078)

—  
—  
—  
—  
—  
—  

—  
—  
—  

(3,434)

—  
—  
—  

1,422

—  
—  
—  
—  
(2,400)  

14

(77)

46

144
—  
—  
—  
—  

(55)

17

(15)
—  

91
—  
—  
—  
—  

124

21

(16)
—  

52,326

11,920

(2,126)

(5,156)

(7,703)

(2,400)

14

(77)

1,993

48,791

4,442

175

(5,115)

(4,186)

(75)

17

(15)

733

44,767

3,920

(1,078)

(5,135)

(3,434)

124

21

(16)

1,139

$

1,788

  $

44,133

  $

(5,226)

  $

(40,546)

  $

220

  $

40,308

The
accompanying
notes
are
an
integral
part
of
this
consolidated
financial
statement.

71

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Consolidated Statement of Cash Flows
Merck & Co., Inc. and Subsidiaries
Years
Ended
December
31
($
in
millions)

Cash Flows from Operating Activities

Net income

Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation and amortization

Intangible asset impairment charges

Charge related to the settlement of worldwide Keytruda
 patent litigation

Foreign currency devaluation related to Venezuela

Net charge related to the settlement of Vioxx
 shareholder class action litigation

Gain on divestiture of Merck Consumer Care business

Gain on AstraZeneca option exercise

Loss on extinguishment of debt

Equity income from affiliates

Dividends and distributions from equity method affiliates

Deferred income taxes

Share-based compensation

Other

Net changes in assets and liabilities:

Accounts receivable

Inventories

Trade accounts payable

Accrued and other current liabilities

Income taxes payable

Noncurrent liabilities

Other

Net Cash Provided by Operating Activities

Cash Flows from Investing Activities

Capital expenditures

Purchases of securities and other investments

Proceeds from sales of securities and other investments

Divestiture of Merck Consumer Care business, net of cash divested

Dispositions of other businesses, net of cash divested

Proceeds from AstraZeneca option exercise

Acquisition of Cubist Pharmaceuticals, Inc., net of cash acquired

Acquisition of Idenix Pharmaceuticals, Inc., net of cash acquired

Acquisitions of other businesses, net of cash acquired

Acquisition of Bayer AG collaboration rights

Cash inflows from net investment hedges

Other

Net Cash Used in Investing Activities

Cash Flows from Financing Activities

Net change in short-term borrowings

Payments on debt

Proceeds from issuance of debt

Purchases of treasury stock

Dividends paid to stockholders

Other dividends paid

Proceeds from exercise of stock options

Other

Net Cash Used in Financing Activities

2016

2015

2014

$

3,941

  $

4,459   $

11,934

5,441

3,948

625
—  
—  
—  
—  
—  

(86)

16

(1,521)

300

313

(619)

206

278

(2,018)

124

(809)

237

10,376

(1,614)

(15,651)

14,353

—  
—  
—  
—  
—  

(780)

—  

29

453

(3,210)

—  

(2,386)

1,079

(3,434)

(5,124)

—  

939

(118)

(9,044)

6,375  
162  
—  
876  
680  
—  
—  
—  
(205)  
50  
(764)  
299  
874  

(480)  
805  
(37)  
(8)  
(266)  
(277)  
(5)  
12,538  

(1,283)  
(16,681)  
20,413  
—  
316  
—  
(7,598)  
—  
(146)  
—  
139  
82  
(4,758)  

(1,540)  
(2,906)  
7,938  
(4,186)  
(5,117)  
—  
485  
(61)  
(5,387)  

6,691

1,222

—

—

—

(11,209)

(741)

628

(257)

185

(2,600)

278

34

(554)

79

593

1,635

(21)

190

(98)

7,989

(1,317)

(24,944)

15,114

13,951

1,169

419

—

(3,700)

(181)

(1,000)

195

(80)

(374)

(460)

(6,617)

3,146

(7,703)

(5,170)

(77)

1,560

79

(15,242)

 
 
 
 
   
   
 
   
   
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
Effect of Exchange Rate Changes on Cash and Cash Equivalents

Net (Decrease) Increase in Cash and Cash Equivalents

Cash and Cash Equivalents at Beginning of Year

Cash and Cash Equivalents at End of Year

(131)

(2,009)

8,524

6,515

  $

(1,310)  
1,083  
7,441  
8,524   $

(553)

(8,180)

15,621

7,441

$

The
accompanying
notes
are
an
integral
part
of
this
consolidated
financial
statement.

72

 
 
 
Table of Contents

Notes to Consolidated Financial Statements
Merck & Co., Inc. and Subsidiaries
($
in
millions
except
per
share
amounts)

1.    Nature of Operations

Merck & Co., Inc. (Merck or the Company) is a global health care company that delivers innovative health solutions through its prescription medicines,
vaccines,  biologic  therapies  and  animal  health  products.  The  Company’s  operations  are  principally  managed  on  a  products  basis  and  include  four  operating
segments, which are the Pharmaceutical, Animal Health, Healthcare Services and Alliances segments. The Pharmaceutical segment is the only reportable segment.

The  Pharmaceutical  segment  includes  human  health  pharmaceutical  and  vaccine  products  marketed  either  directly  by  the  Company  or  through  joint
ventures. Human health pharmaceutical products consist of therapeutic and preventive agents, generally sold by prescription, for the treatment of human disorders.
The Company sells these human health pharmaceutical products primarily to drug wholesalers and retailers, hospitals, government agencies and managed health
care  providers  such  as  health  maintenance  organizations,  pharmacy  benefit  managers  and  other  institutions.  Vaccine  products  consist  of  preventive  pediatric,
adolescent and adult vaccines, primarily administered at physician offices. The Company sells these human health vaccines primarily to physicians, wholesalers,
physician  distributors  and  government  entities.  Sales  of  vaccines  in  most  major  European  markets  were  marketed  through  the  Company’s  Sanofi  Pasteur  MSD
(SPMSD)  joint  venture  until  its  termination  on  December  31,  2016.  Beginning  in  2017,  Merck  will  record  vaccine  sales  in  the  European  markets  that  were
previously part of the joint venture.

The Company also has animal health operations that discover, develop, manufacture and market animal health products, including vaccines, which the
Company  sells  to  veterinarians,  distributors  and  animal  producers.  The  Company’s  Healthcare  Services  segment  provides  services  and  solutions  that  focus  on
engagement, health analytics and clinical services to improve the value of care delivered to patients. Merck’s Alliances segment primarily includes results from the
Company’s relationship with AstraZeneca LP until the termination of that relationship on June 30, 2014 (see Note 8). On October 1, 2014, the Company divested
its Consumer Care segment that developed, manufactured and marketed over-the-counter, foot care and sun care products (see Note 3).

2.    Summary of Accounting Policies

Principles 
of 
Consolidation 
— 

 The  consolidated  financial  statements  include  the  accounts  of  the  Company  and  all  of  its  subsidiaries  in  which  a
controlling interest is maintained. Intercompany balances and transactions are eliminated. Controlling interest is determined by majority ownership interest and the
absence of substantive third-party participating rights or, in the case of variable interest entities, by majority exposure to expected losses, residual returns or both.
For those consolidated subsidiaries where Merck ownership is less than 100%, the outside shareholders’ interests are shown as Noncontrolling
interests
in equity.
Investments  in  affiliates  over  which  the  Company  has  significant  influence  but  not  a  controlling  interest,  such  as  interests  in  entities  owned  equally  by  the
Company and a third party that are under shared control, are carried on the equity basis.

Acquisitions
—

In a business combination, the acquisition method of accounting requires that the assets acquired and liabilities assumed be recorded as
of the date of the acquisition at their respective fair values with limited exceptions. Assets acquired and liabilities assumed in a business combination that arise
from contingencies are recognized at fair value if fair value can reasonably be estimated. If the acquisition date fair value of an asset acquired or liability assumed
that arises from a contingency cannot be determined, the asset or liability is recognized if probable and reasonably estimable; if these criteria are not met, no asset
or liability is recognized. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal
or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Accordingly, the Company
may  be  required  to  value  assets  at  fair  value  measures  that  do  not  reflect  the  Company’s  intended  use  of  those  assets.  Any  excess  of  the  purchase  price
(consideration  transferred)  over  the  estimated  fair  values  of  net  assets  acquired  is  recorded  as  goodwill.  Transaction  costs  and  costs  to  restructure  the  acquired
company are expensed as incurred. The operating results of the acquired business are reflected in the Company’s consolidated financial statements after the date of
the acquisition. If the Company determines the assets acquired do not meet the

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definition  of  a  business  under  the  acquisition  method  of  accounting,  the  transaction  will  be  accounted  for  as  an  acquisition  of  assets  rather  than  a  business
combination and, therefore, no goodwill will be recorded.

Foreign 
Currency 
Translation 
— 

 The  net  assets  of  international  subsidiaries  where  the  local  currencies  have  been  determined  to  be  the  functional
currencies  are  translated  into U.S. dollars  using current  exchange  rates.  The  U.S. dollar  effects  that  arise  from  translating  the net  assets  of these  subsidiaries  at
changing  rates  are  recorded  in  the  foreign  currency  translation  account,  which  is  included  in  Accumulated 
other 
comprehensive 
income 
(loss)
 (  AOCI
 )  and
reflected as a separate component of equity. For those subsidiaries that operate in highly inflationary economies and for those subsidiaries where the U.S. dollar has
been determined to be the functional currency, non-monetary foreign currency assets and liabilities are translated using historical rates, while monetary assets and
liabilities are translated at current rates, with the U.S. dollar effects of rate changes included in Other
(income)
expense,
net
.

Cash
Equivalents
—

Cash equivalents are comprised of certain highly liquid investments with original maturities of less than three months.

Inventories 
— 

 Inventories  are  valued  at  the  lower  of  cost  or  market.  The  cost  of  a  substantial  majority  of  domestic  pharmaceutical  and  vaccine
inventories is determined using the last-in, first-out (LIFO) method for both financial reporting and tax purposes. The cost of all other inventories is determined
using the first-in, first-out (FIFO) method. Inventories consist of currently marketed products, as well as certain inventories produced in preparation for product
launches that are considered to have a high probability of regulatory approval. In evaluating the recoverability of inventories produced in preparation for product
launches, the Company considers the likelihood that revenue will be obtained from the future sale of the related inventory together with the status of the product
within the regulatory approval process.

Investments
  —  Investments  in  marketable  debt  and  equity  securities  classified  as  available-for-sale  are  reported  at  fair  value.  Fair  values  of  the
Company’s investments are determined using quoted market prices in active markets for identical assets or liabilities or quoted prices for similar assets or liabilities
or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Changes in fair value
that are considered temporary are reported net of tax in Other
Comprehensive
Income
( OCI
). For declines in the fair value of equity securities that are considered
other-than-temporary,  impairment  losses  are  charged  to  Other 
(income) 
expense, 
net
 .  The  Company  considers  available  evidence  in  evaluating  potential
impairments of its investments, including the duration and extent to which fair value is less than cost and, for equity securities, the Company’s ability and intent to
hold the investments. For debt securities, an other-than-temporary impairment has occurred if the Company does not expect to recover the entire amortized cost
basis of the debt security. If the Company does not intend to sell the impaired debt security, and it is not more likely than not it will be required to sell the debt
security before the recovery of its amortized cost basis, the amount of the other-than-temporary impairment recognized in earnings, recorded in Other
(income)
expense,
net
, is limited to the portion attributed to credit loss. The remaining portion of the other-than-temporary impairment related to other factors is recognized
in OCI
. Realized gains and losses for both debt and equity securities are included in Other
(income)
expense,
net
.

Revenue
Recognition
—

Revenues from sales of products are recognized when title and risk of loss passes to the customer, typically upon delivery.
Recognition  of  revenue  also  requires  reasonable  assurance  of  collection  of  sales  proceeds  and  completion  of  all  performance  obligations.  Domestically,  sales
discounts are issued to customers as direct discounts at the point-of-sale, indirectly through an intermediary wholesaler, known as chargebacks, or indirectly in the
form of rebates. Additionally, sales are generally made with a limited right of return under certain conditions. Revenues are recorded net of provisions for sales
discounts and returns, which are established at the time of sale. In addition, revenues are recorded net of time value of money discounts if collection of accounts
receivable is expected to be in excess of one year. Accruals for chargebacks are reflected as a direct reduction to accounts receivable and accruals for rebates are
recorded as current liabilities. The accrued balances relative to the provisions for chargebacks and rebates included in Accounts
receivable
and Accrued
and
other
current
liabilities
were $196 million and $2.7 billion , respectively, at December 31, 2016 and $145 million and $2.7 billion , respectively, at December 31, 2015 .

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The  Company  recognizes  revenue  from  the  sales  of  vaccines  to  the  Federal  government  for  placement  into  vaccine  stockpiles  in  accordance  with
Securities and Exchange Commission (SEC) Interpretation ,
Commission
Guidance
Regarding
Accounting
for
Sales
of
Vaccines
and
BioTerror
Countermeasures
to
the
Federal
Government
for
Placement
into
the
Pediatric
Vaccine
Stockpile
or
the
Strategic
National
Stockpile
.

Depreciation 
—

 Depreciation  is  provided  over  the  estimated  useful  lives  of  the  assets,  principally  using  the  straight-line  method.  For tax  purposes,
accelerated tax methods are used. The estimated useful lives primarily range from 25 to 45  years for Buildings
, and from 3 to 15  years for Machinery,
equipment
and
office
furnishings
. Depreciation expense was $1.6 billion in 2016 , $1.6 billion in 2015 and $2.5 billion in 2014 .

Advertising 
and 
Promotion 
Costs 
—
 Advertising  and  promotion  costs  are  expensed  as  incurred.  The  Company  recorded  advertising  and  promotion

expenses of $2.1 billion , $2.1 billion and $2.3 billion in 2016 , 2015 and 2014 , respectively.

Software
Capitalization
—

The Company capitalizes certain costs incurred in connection with obtaining or developing internal-use software including
external  direct  costs  of  material  and  services,  and  payroll  costs  for  employees  directly  involved  with  the  software  development.  Capitalized  software  costs  are
included in Property,
plant
and
equipment
and amortized beginning when the software project is substantially complete and the asset is ready for its intended use.
Capitalized software costs associated with projects that are being amortized over 6 to 10  years (including the Company’s on-going multi-year implementation of
an enterprise-wide resource planning system) were $452 million and $421 million , net of accumulated amortization at December 31, 2016 and 2015 , respectively.
All  other  capitalized  software  costs  are  being  amortized  over  periods  ranging  from  3 to 5  years.  Costs incurred  during  the  preliminary  project  stage  and  post-
implementation stage, as well as maintenance and training costs, are expensed as incurred.

Goodwill 
— 

 Goodwill  represents  the  excess  of  the  consideration  transferred  over  the  fair  value  of  net  assets  of  businesses  acquired.  Goodwill  is
assigned to reporting units and evaluated for impairment on at least an annual basis, or more frequently if impairment indicators exist, by first assessing qualitative
factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If the Company concludes it is more
likely than not that the fair value of a reporting unit is less than its carrying amount, a quantitative fair value test is performed.

Acquired
Intangibles
—

Acquired intangibles include products and product rights, tradenames and patents, which are recorded at fair value, assigned an
estimated useful life, and are amortized primarily on a straight-line basis over their estimated useful lives ranging from 2 to 20  years (see Note 7). The Company
periodically  evaluates  whether  current  facts  or  circumstances  indicate  that  the  carrying  values  of  its  acquired  intangibles  may  not  be  recoverable.  If  such
circumstances are determined to exist, an estimate of the undiscounted future cash flows of these assets, or appropriate asset groupings, is compared to the carrying
value to determine whether an impairment exists. If the asset is determined to be impaired, the loss is measured based on the difference between the carrying value
of the intangible asset and its fair value, which is determined based on the net present value of estimated future cash flows.

Acquired 
In-Process 
Research 
and 
Development 
— 

 Acquired  in-process  research  and  development  (IPR&D)  that  the  Company  acquires  through
business  combinations  represents  the  fair  value  assigned  to  incomplete  research  projects  which,  at  the  time  of  acquisition,  have  not  reached  technological
feasibility. The amounts are capitalized and are accounted for as indefinite-lived intangible assets, subject to impairment testing until completion or abandonment
of the projects. Upon successful completion of each project, Merck will make a determination as to the then useful life of the intangible asset, generally determined
by the period in which the substantial majority of the cash flows are expected to be generated, and begin amortization. The Company tests IPR&D for impairment
at least annually, or more frequently if impairment indicators exist, by first assessing qualitative factors to determine whether it is more likely than not that the fair
value of the IPR&D intangible asset is less than its carrying amount. If the Company concludes it is more likely than not that the fair value is less than the carrying
amount, a quantitative test that compares the fair value of the IPR&D intangible asset with its carrying value is performed. If the fair value is less than the carrying
amount, an impairment loss is recognized in operating results.

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Contingent
Consideration
—
Certain of the Company’s business acquisitions involve the potential for future payment of consideration that is contingent
upon  the  achievement  of  performance  milestones,  including  product  development  milestones  and  royalty  payments  on  future  product  sales.  The  fair  value  of
contingent  consideration  liabilities  is  determined  at  the  acquisition  date  using  unobservable  inputs.  These  inputs  include  the  estimated  amount  and  timing  of
projected  cash flows, the  probability  of success  (achievement  of the contingent  event)  and the risk-adjusted  discount  rate used to present  value the probability-
weighted  cash flows. Subsequent to the acquisition  date,  at each reporting  period,  the contingent  consideration  liability  is remeasured  at current  fair value  with
changes (either expense or income) recorded in earnings. Changes in any of the inputs may result in a significantly different fair value adjustment.

Research
and
Development
—

Research and development is expensed as incurred. Upfront and milestone payments due to third parties in connection
with research and development collaborations prior to regulatory approval are expensed as incurred. Payments due to third parties upon or subsequent to regulatory
approval  are  capitalized  and  amortized  over  the  shorter  of  the  remaining  license  or  product  patent  life.  Amounts  due  from  collaborative  partners  related  to
development activities are generally reflected as a reduction of research and development expenses when the specific milestone has been achieved. Nonrefundable
advance payments for goods and services that will be used in future research and development activities are expensed when the activity has been performed or
when the goods have been received rather than when the payment is made. Research and development expenses include restructuring costs and IPR&D impairment
charges in all periods. In addition, research and development expenses include expense or income related to changes in the estimated fair value measurement of
liabilities for contingent consideration.

Share-Based
Compensation
—

The Company expenses all share-based payments to employees over the requisite service period based on the grant-date

fair value of the awards.

Restructuring 
Costs 
— 

 The  Company  records  liabilities  for  costs  associated  with  exit  or  disposal  activities  in  the  period  in  which  the  liability  is
incurred.  In  accordance  with  existing  benefit  arrangements,  employee  termination  costs  are  accrued  when  the  restructuring  actions  are  probable  and  estimable.
When accruing these costs, the Company will recognize the amount within a range of costs that is the best estimate within the range. When no amount within the
range is a better estimate than any other amount, the Company recognizes the minimum amount within the range. Costs for one-time termination benefits in which
the employee is required to render service until termination in order to receive the benefits are recognized ratably over the future service period.

Contingencies 
and 
Legal 
Defense 
Costs 
— 

 The  Company  records  accruals  for  contingencies  and  legal  defense  costs  expected  to  be  incurred  in

connection with a loss contingency when it is probable that a liability has been incurred and the amount can be reasonably estimated.

Taxes
on
Income
—

Deferred taxes are recognized for the future tax effects of temporary differences between financial and income tax reporting based
on enacted tax laws and rates. The Company evaluates tax positions to determine whether the benefits of tax positions are more likely than not of being sustained
upon audit based on the technical merits of the tax position. For tax positions that are more likely than not of being sustained upon audit, the Company recognizes
the largest amount of the benefit that is greater than 50% likely of being realized upon ultimate settlement in the financial statements. For tax positions that are not
more likely than not of being sustained upon audit, the Company does not recognize any portion of the benefit in the financial statements. The Company recognizes
interest and penalties associated with uncertain tax positions as a component of Taxes
on
income
in the Consolidated Statement of Income.

Use 
of 
Estimates 
— 

 The  consolidated  financial  statements  are  prepared  in  conformity  with  accounting  principles  generally  accepted  in  the  United
States (GAAP) and, accordingly, include certain amounts that are based on management’s best estimates and judgments. Estimates are used when accounting for
amounts recorded in connection with acquisitions, including initial fair value determinations of assets and liabilities, primarily IPR&D, other intangible assets and
contingent  consideration,  as  well  as  subsequent  fair  value  measurements.  Additionally,  estimates  are  used  in  determining  such  items  as  provisions  for  sales
discounts  and  returns,  depreciable  and  amortizable  lives,  recoverability  of  inventories,  including  those  produced  in  preparation  for  product  launches,  amounts
recorded  for  contingencies,  environmental  liabilities  and  other  reserves,  pension  and  other  postretirement  benefit  plan  assumptions,  share-based  compensation
assumptions, restructuring costs, impairments of long-lived assets (including intangible assets and

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goodwill) and investments, and taxes on income. Because of the uncertainty inherent in such estimates, actual results may differ from these estimates.

Reclassifications
—

Certain reclassifications have been made to prior year amounts to conform to the current year presentation.

Recently
Adopted
Accounting
Standards
—

In the first quarter of 2016, the Company adopted accounting guidance issued by the Financial Accounting
Standards Board (FASB) in April of 2015, which requires debt issuance costs to be presented as a direct deduction from the carrying amount of that debt on the
balance sheet as opposed to being presented as a deferred charge. Approximately $100 million of debt issuance costs were reclassified in the first quarter of 2016 as
a result of the adoption of the new standard. Prior period amounts have been recast to conform to the new presentation.

In the second quarter of 2016, the Company elected to early adopt an accounting standards update issued by the FASB in March of 2016 intended to
simplify the accounting and reporting for employee share-based payment transactions. Among other provisions, the new standard requires that excess tax benefits
and deficiencies that arise upon vesting or exercise of share-based payments be recognized in the income statement (as opposed to previous guidance under which
tax effects were recorded to Other
paid-in-capital
in certain instances). This aspect of the new guidance, which was required to be adopted prospectively, resulted
in  the  recognition  of  $79  million  of  excess  tax  benefits  in  Taxes 
on 
income
 in  2016  arising  from  share-based  payments.  The  new  guidance  also  amended  the
presentation  of  certain  share-based  payment  items  in  the  statement  of  cash  flows.  Cash  flows  related  to  excess  income  tax  benefits  are  now  classified  as  an
operating  activity  (formerly  included  as  a  financing  activity).  The  Company  elected  to  adopt  this  aspect  of  the  new  guidance  prospectively.  The  standard  also
clarified that cash payments made to taxing authorities on the employees’ behalf for shares withheld should be presented as a financing activity. This aspect of the
guidance  was  adopted  retrospectively;  accordingly,  the  Company  reclassified  $117  million  and  $129  million  of  such  payments  from  operating  activities  to
financing  activities  in  the  Consolidated  Statement  of  Cash  Flows  for  the  years  ended  December  31,  2015  and  2014,  respectively,  to  conform  to  the  current
presentation. The Company has elected to continue to estimate the impact of forfeitures when determining the amount of compensation cost to be recognized each
period rather than account for them as they occur.

In the fourth quarter of 2016, the Company elected to early adopt an accounting standards update issued by the FASB on January 5, 2017 intended to
clarify  the  definition  of  a  business  with  the  objective  of  adding  guidance  to  assist  entities  with  evaluating  whether  transactions  should  be  accounted  for  as
acquisitions (or disposals) of assets or businesses. If substantially all of the fair value of gross assets included in a transaction is concentrated in a single asset (or a
group  of  similar  assets),  the  assets  would  not  represent  a  business.  To  be  considered  a  business,  the  assets  in  the  transaction  need  to  include  an  input  and  a
substantive process that together significantly contribute to the ability to create outputs. Prior to the adoption of the new guidance, an acquisition or disposition
would be considered a business if there were inputs, as well as processes that when applied to those inputs had the ability to create outputs. Entities are permitted to
apply  the  updated  guidance  to  transactions  occurring  before  the  guidance  was  issued  as  long  as  the  applicable  financial  statements  have  not  been
issued. Accordingly, the Company elected to adopt this guidance prospectively as of October 1, 2016.

Recently
Issued
Accounting
Standards
—

In May 2014, the FASB issued amended accounting guidance on revenue recognition that will be applied to
all contracts with customers. The objective of the new guidance is to improve comparability of revenue recognition practices across entities and to provide more
useful  information  to  users  of  financial  statements  through  improved  disclosure  requirements.  In  August  2015,  the  FASB  approved  a  one-year  deferral  of  the
effective date making this guidance effective for interim and annual periods beginning in 2018. The new standard permits two methods of adoption: retrospectively
to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of adopting the guidance being recognized at the
date of initial application (modified retrospective method). The Company will adopt the new standard on January 1, 2018 and currently plans to use the modified
retrospective method. The majority of the Company’s business is ship and bill and, on that primary revenue stream, Merck does not expect significant differences.
However,  the  Company’s  analysis  is  preliminary  and  subject  to  change.  Merck  has  not  completed  its  assessment  of  multiple  element  arrangements  and  certain
discount and trade promotion programs.

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In January 2016, the FASB issued revised guidance for the accounting and reporting of financial instruments. The new guidance requires that equity
investments with readily determinable fair values currently classified as available for sale be measured at fair value with changes in fair value recognized in net
income. The new guidance also simplifies  the impairment  testing of equity investments  without readily  determinable  fair values and changes certain  disclosure
requirements. This guidance is effective for interim and annual periods beginning in 2018. Early adoption is not permitted. The Company is currently assessing the
impact of adoption on its consolidated financial statements.

In  February  2016,  the  FASB  issued  new  accounting  guidance  for  the  accounting  and  reporting  of  leases.  The  new  guidance  requires  that  lessees
recognize a right-of-use asset and a lease liability recorded on the balance sheet for each of its leases (other than leases that meet the definition of a short-term
lease).    Leases  will  be  classified  as  either  operating  or  finance.  Operating  leases  will  result  in  straight-line  expense  in  the  income  statement  (similar  to  current
operating leases) while finance leases will result in more expense being recognized in the earlier years of the lease term (similar to current capital leases). The new
guidance  will  be  effective  for  interim  and  annual  periods  beginning  in  2019.  Early  adoption  is  permitted.  The  Company  is  currently  evaluating  the  impact  of
adoption on its consolidated financial statements.

In June 2016, the FASB issued amended guidance on the accounting for credit losses on financial instruments within its scope. The guidance introduces
an expected loss model for estimating credit losses, replacing the incurred loss model. The new guidance also changes the impairment model for available-for-sale
debt  securities,  requiring  the  use  of  an  allowance  to  record  estimated  credit  losses  (and  subsequent  recoveries).  The  new  guidance  is  effective  for  interim  and
annual  periods  beginning  in  2020,  with  earlier  application  permitted  in  2019.  The  Company  is  currently  evaluating  the  impact  of  adoption  on  its  consolidated
financial statements.

In August 2016, the FASB issued guidance on the classification of certain cash receipts and payments in the statement of cash flows intended to reduce
diversity  in  practice.  The  guidance  is  effective  for  interim  and  annual  periods  beginning  in  2018.  Early  adoption  is  permitted.  The  guidance  is  to  be  applied
retrospectively to all periods presented but may be applied prospectively if retrospective application would be impracticable. The Company is currently evaluating
the effect of the standard on its Consolidated Statement of Cash Flows.

In  October  2016,  the  FASB  issued  guidance  on  the  accounting  for  the  income  tax  consequences  of  intra-entity  transfers  of  assets  other  than
inventory. Under existing guidance, the recognition of current and deferred income taxes for an intra-entity asset transfer is prohibited until the asset has been sold
to  a  third  party.  The  new  guidance  will  require  the  recognition  of  the  income  tax  consequences  of  an  intra-entity  transfer  of  an  asset  (with  the  exception  of
inventory) when the intra-entity transfer occurs. The guidance is effective for interim and annual periods beginning in 2018. Early adoption is permitted. The new
guidance is to be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings in the beginning of the period of
adoption. The Company does not anticipate the adoption of the new guidance will have a material effect on its consolidated financial statements.

In November 2016, the FASB issued guidance requiring that amounts generally described as restricted cash and restricted cash equivalents be included
with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The guidance is
effective for interim and annual periods beginning in 2018 and should be applied using a retrospective transition method to each period presented. Early adoption is
permitted. The Company is currently evaluating the effect of the standard on its Consolidated Statement of Cash Flows.

In January 2017, the FASB issued guidance that provides for the elimination of Step 2 from the goodwill impairment test. If impairment charges are
recognized,  the  amount  recorded  will  be  the  amount  by  which  the  carrying  amount  exceeds  the  reporting  unit’s  fair  value  with  certain  limitations.  The  new
guidance is effective for interim and annual periods in 2021. The Company does not anticipate the adoption of the new guidance will have a material effect on its
consolidated financial statements.

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3.    Acquisitions, Divestitures, Research Collaborations and License Agreements

The Company continues to acquire businesses and establish external alliances such as research collaborations and licensing agreements to complement
its  internal  research  capabilities.  These  arrangements  often  include  upfront  payments,  as  well  as  expense  reimbursements  or  payments  to  the  third  party,  and
milestone,  royalty  or  profit  share  payments,  contingent  upon  the  occurrence  of  certain  future  events  linked  to  the  success  of  the  asset  in  development.  The
Company also reviews its marketed products and pipeline to examine candidates which may provide more value through out-licensing and, as part of its portfolio
assessment process, may also divest certain assets. Pro forma financial information for acquired businesses is not presented if the historical financial results of the
acquired entity are not significant when compared with the Company’s financial results.

2016
Transactions

In July 2016, Merck acquired Afferent Pharmaceuticals (Afferent), a privately held pharmaceutical company focused on the development of therapeutic
candidates targeting the P2X3 receptor for the treatment of common, poorly-managed, neurogenic conditions. Afferent’s lead investigational candidate, MK-7264
(formerly AF-219), is a  selective, non-narcotic, orally-administered P2X3 antagonist being evaluated in a Phase 2b clinical trial for the treatment of refractory,
chronic cough as well as in a Phase 2 clinical trial in idiopathic pulmonary fibrosis with cough. Total consideration transferred of $510 million included cash paid
for outstanding Afferent shares of $487 million , as well as share-based compensation payments to settle equity awards attributable to precombination service and
cash paid for transaction costs on behalf of Afferent. In addition, former Afferent shareholders are eligible to receive a total of up to an additional $750 million
contingent  upon  the  attainment  of  certain  clinical  development  and  commercial  milestones  for  multiple  indications  and  candidates,  including  MK-7264.  This
transaction was accounted for as an acquisition of a business; accordingly, the assets acquired and liabilities assumed were recorded at their respective fair values
as of the acquisition date. The Company determined the fair value of the contingent consideration was $223 million at the acquisition date utilizing a probability-
weighted estimated cash flow stream adjusted for the expected timing of each payment using an appropriate discount rate dependent on the nature and timing of the
milestone payment. Merck recognized an intangible asset for in-process research and development (IPR&D) of $832 million , net deferred tax liabilities of $258
million , and other net assets of $29 million (primarily consisting of cash acquired). The excess of the consideration transferred over the fair value of net assets
acquired of $130 million was recorded as goodwill that was allocated to the Pharmaceutical segment and is not deductible for tax purposes. The fair value of the
identifiable intangible asset related to IPR&D was determined using an income approach, through which fair value is estimated based upon the asset’s probability-
adjusted future net cash flows, which reflects the stage of development of the project and the associated probability of successful completion. The net cash flows
were then discounted to present value using a discount rate of 11.5% . Actual cash flows are likely to be different than those assumed.

Also in July 2016, Merck, through its wholly owned subsidiary Healthcare Services & Solutions, LLC, acquired a majority ownership interest in The
StayWell  Company  LLC  (StayWell),  a  portfolio  company  of  Vestar  Capital  Partners  (Vestar).  StayWell  is  a  health  engagement  company  that  helps  its  clients
engage and educate people to improve health and business results. Under the terms of the transaction, Merck paid $150 million for a majority ownership interest.
Additionally, Merck provided StayWell with a $150 million intercompany loan to pay down preexisting third-party debt. Merck has an option to buy, and Vestar
has  an option  to require  Merck  to buy,  some  or  all  of Vestar’s  remaining  ownership  interest  at fair  value  beginning  three years from the acquisition date. This
transaction was accounted for as an acquisition of a business. Merck recognized intangible assets of $238 million , deferred tax liabilities of $84 million , other net
liabilities of $5 million and noncontrolling interest of $124 million . The excess of the consideration transferred over the fair value of net assets acquired of $275
million was  recorded  as  goodwill  and  is  largely  attributable  to  anticipated  synergies  expected  to  arise  after  the  acquisition.  The  goodwill  was  allocated  to  the
Healthcare Services segment and is not deductible for tax purposes. The intangible assets recognized primarily relate to customer relationships, which are being
amortized over a 10 -year useful life, and medical information and solutions content, which are being amortized over a five -year useful life.

Additionally, in July 2016, Merck announced it had executed an agreement to acquire a controlling interest in Vallée S.A. (Vallée), a leading privately
held producer of animal health products in Brazil. Vallée has an extensive portfolio of products spanning parasiticides, anti-infectives and vaccines that include
products  for  livestock,  horses,  and  companion  animals.  Under  the  terms  of  the  agreement,  Merck  will  acquire  approximately  93% of  the  shares  of  Vallée  for
approximately  $400  million  ,  based  on  exchange  rates  at  the  time  of  the  announcement.  This  agreement  is  subject  to  regulatory  review  and  certain  closing
conditions.

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In June 2016, Merck and Moderna Therapeutics (Moderna) entered into a strategic collaboration and license agreement to develop and commercialize
novel messenger RNA (mRNA)-based personalized cancer vaccines. The development program will entail multiple studies in several types of cancer and include
the  evaluation  of  mRNA-based  personalized  cancer  vaccines  in  combination  with  Merck’s  Keytruda
.  Pursuant  to  the  terms  of  the  agreement,  Merck  made  an
upfront cash payment to Moderna of $200 million , which was recorded in Research
and
development
expenses. Following human proof of concept studies, Merck
has the right to elect to make an additional payment to Moderna. If Merck exercises this right, the two companies will then equally share cost and profits under a
worldwide collaboration for the development of personalized cancer vaccines. Moderna will have the right to elect to co-promote the personalized cancer vaccines
in the United States. The agreement entails exclusivity around combinations with Keytruda
. Moderna and Merck will each have the ability to combine mRNA-
based personalized cancer vaccines with other (non-PD-1) agents.

In  January  2016,  Merck  acquired  IOmet  Pharma  Ltd  (IOmet),  a  privately  held  UK-based  drug  discovery  company  focused  on  the  development  of
innovative  medicines  for  the  treatment  of  cancer,  with  a  particular  emphasis  on  the  fields  of  cancer  immunotherapy  and  cancer  metabolism.  The  acquisition
provides  Merck  with  IOmet’s  preclinical  pipeline  of  IDO  (indoleamine-2,3-dioxygenase  1),  TDO  (tryptophan-2,3-dioxygenase),  and  dual-acting  IDO/TDO
inhibitors.  The  transaction  was  accounted  for  as  an  acquisition  of  a  business.  Total  purchase  consideration  in  the  transaction  included  a  cash  payment  of  $150
million and future additional  milestone  payments of up to $250 million that  are contingent  upon certain  clinical  and regulatory  milestones  being achieved.  The
Company determined the fair value of the contingent consideration was $94 million at the acquisition date utilizing  a probability-weighted  estimated cash flow
stream adjusted for the expected timing of each payment utilizing a discount rate of 10.5% . Merck recognized intangible assets for IPR&D of $155 million and net
deferred tax assets of $32 million . The excess of the consideration transferred over the fair value of net assets acquired of $57 million was recorded as goodwill
that was allocated to the Pharmaceutical segment and is not deductible for tax purposes. The fair values of the identifiable intangible assets related to IPR&D were
determined using an income approach. The assets’ probability-adjusted future net cash flows were then discounted to present value also using a discount rate of
10.5% . Actual cash flows are likely to be different than those assumed.

2015
Transactions

In  December  2015,  the  Company  divested  its  remaining  ophthalmics  portfolio  in  international  markets  to  Mundipharma  Ophthalmology  Products

Limited. Merck received consideration of approximately $170 million and recognized a gain of $147 million recorded in Other
(income)
expense,
net
in 2015.

In  July  2015,  Merck  acquired  cCAM  Biotherapeutics  Ltd.  (cCAM),  a  privately  held  biopharmaceutical  company  focused  on  the  discovery  and
development  of  novel  cancer  immunotherapies.  Total  purchase  consideration  in  the  transaction  included  an  upfront  payment  of  $96  million  in  cash  and  future
additional payments of up to $510 million associated with the attainment of certain clinical development, regulatory and commercial milestones. The transaction
was accounted for as an acquisition of a business. Merck recognized an intangible asset for IPR&D of $180 million related to CM-24, a monoclonal antibody, as
well as a liability for contingent consideration of $105 million , goodwill of $14 million and other net assets of $7 million . During 2016, as a result of unfavorable
efficacy data, the Company determined that it would discontinue development of the pipeline program. Accordingly, the Company recorded an IPR&D impairment
charge  of  $180  million  related  to  CM-24  and  reversed  the  related  liability  for  contingent  consideration,  which  had  a  fair  value  of  $116  million  at  the  time  of
program discontinuation. Both the IPR&D impairment charge and the income related to the reduction in the liability for contingent consideration were recorded in
Research
and
development
expenses in 2016.

Also in July 2015, Merck and Allergan plc (Allergan) entered into an agreement pursuant to which Allergan acquired the exclusive worldwide rights to
MK-1602 and MK-8031, Merck’s investigational small molecule oral calcitonin gene-related peptide (CGRP) receptor antagonists, which are being developed for
the treatment and prevention of migraine. Under the terms of the agreement, Allergan acquired these rights for upfront payments of $250 million , of which $125
million was paid in August 2015 upon closing of the transaction and the remaining $125 million was paid in April of 2016. The Company recorded a gain of $250
million within Other 
(income) 
expense, 
net
 in  2015 related  to  the  transaction.  Allergan  is  fully  responsible  for  development  of  the  CGRP programs,  as  well  as
manufacturing  and  commercialization  upon  approval  and  launch  of  the  products.  Under  the  agreement,  Merck  is  entitled  to  receive  potential  development  and
commercial milestone payments and royalties at tiered double-digit rates based on commercialization

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of  the  programs.  During  2016,  Merck  recognized  gains  of  $100  million  within  Other 
(income) 
expense, 
net
 resulting  from  payments  by  Allergan  for  the
achievement of research and development milestones.

In February 2015, Merck and NGM Biopharmaceuticals, Inc. (NGM), a privately held biotechnology company, entered into a multi-year collaboration
to research, discover, develop and commercialize novel biologic therapies across a wide range of therapeutic areas. Under the terms of the agreement, Merck made
an upfront payment to NGM of $94 million , which was included in Research
and
development
expenses, and purchased a 15% equity stake in NGM for $106
million . Merck committed up to $250 million to fund all of NGM’s efforts under the initial five -year term of the collaboration, with the potential for additional
funding if certain conditions are met. Prior to Merck initiating  a Phase 3 study for a licensed  program, NGM may elect to either  receive milestone  and royalty
payments or, in certain cases, to co-fund development and participate in a global cost and revenue share arrangement of up to 50% . The agreement also provides
NGM with the option to participate in the co-promotion of any co-funded program in the United States. Merck has the option to extend the research agreement for
two additional two -year terms.

In January 2015, Merck acquired Cubist Pharmaceuticals, Inc. (Cubist), a leader in the development of therapies to treat serious infections caused by a
broad range of bacteria.  Total consideration  transferred  of $8.3 billion included cash paid for outstanding  Cubist shares of $7.8 billion , as well as share-based
compensation  payments  to  settle  equity  awards  attributable  to  precombination  service  and  cash  paid  for  transaction  costs  on  behalf  of  Cubist.  Share-based
compensation payments to settle non-vested equity awards attributable to postcombination service were recognized as transaction expense in 2015. In addition, the
Company assumed all of the outstanding convertible debt of Cubist, which had a fair value of approximately $1.9 billion at the acquisition date. Merck redeemed
this debt in February 2015. The transaction was accounted for as an acquisition of a business.

The estimated fair value of assets acquired and liabilities assumed from Cubist is as follows:

Estimated fair value at January 21, 2015

Cash and cash equivalents

Accounts receivable

Inventories

Other current assets

Property, plant and equipment

Identifiable intangible assets:

Products and product rights (11 year weighted-average useful life)

IPR&D

Other noncurrent assets
Current liabilities 
(1)

Deferred income tax liabilities

Long-term debt
Other noncurrent liabilities (1)

Total identifiable net assets

Goodwill (2)

Consideration transferred

$

$

733

123

216

55

151

6,923

50

184

(233)

(2,519)

(1,900)

(122)

3,661

4,670

8,331

(1)

Included
in
current
liabilities
and
other
noncurrent
liabilities
is
contingent
consideration
of
$73
million
and
$50
million
,
respectively.
(2)

The 
goodwill 
recognized 
is 
largely 
attributable 
to 
anticipated 
synergies 
expected 
to 
arise 
after 
the 
acquisition 
and 
was 
allocated 
to 
the 
Pharmaceutical 
segment. 
The 
goodwill 
is 
not
deductible
for
tax
purposes.

The  estimated  fair  values  of  identifiable  intangible  assets  related  to  currently  marketed  products  were  determined  using  an  income  approach  through
which fair value is estimated based on market participant expectations of each asset’s discounted projected net cash flows. The Company’s estimates of projected
net cash flows considered historical and projected pricing, margins and expense levels; the performance of competing products where applicable; relevant industry
and therapeutic area growth drivers and factors; current and expected trends in technology and product life cycles; the extent and timing of potential new product
introductions by the Company’s competitors; and the life of

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each asset’s underlying patent. The net cash flows were then probability-adjusted where appropriate to consider the uncertainties associated with the underlying
assumptions, as well as the risk profile of the net cash flows utilized in the valuation. The probability-adjusted future net cash flows of each product were then
discounted to present value utilizing a discount rate of 8% . Actual cash flows are likely to be different than those assumed.

The  Company  recorded  the  fair  value  of  incomplete  research  project  surotomycin  (MK-4261)  which,  at  the  time  of  acquisition,  had  not  reached
technological feasibility and had no alternative future use. During the second quarter of 2015, the Company received unfavorable efficacy data from a clinical trial
for surotomycin. The evaluation of this data, combined with an assessment of the commercial opportunity for surotomycin, resulted in the discontinuation of the
program and an IPR&D impairment charge (see Note 7).

In connection with the Cubist acquisition, liabilities were recorded for potential future consideration that is contingent upon the achievement of future
sales-based milestones. The fair value of contingent consideration liabilities was determined at the acquisition date using unobservable inputs. These inputs include
the estimated amount and timing of projected cash flows, the probability of success (achievement of the contingent event) and a risk-adjusted discount rate of 8%
used to present value the probability-weighted cash flows. Changes in the inputs could result in a different fair value measurement.

This transaction closed on January 21, 2015; accordingly, the results of operations of the acquired business have been included in the Company’s results
of operations beginning after that date. During 2015, the Company incurred $324 million of transaction costs directly related to the acquisition of Cubist including
share-based compensation costs, severance costs, and legal and advisory fees which are reflected in Marketing
and
administrative
expenses.

The following unaudited supplemental pro forma data presents consolidated information as if the acquisition of Cubist had been completed on January

1, 2014:

Years
Ended
December
31

Sales

Net income attributable to Merck & Co., Inc.

Basic earnings per common share attributable to Merck & Co., Inc. common shareholders

Earnings per common share assuming dilution attributable to Merck & Co., Inc. common shareholders

2015

2014

$

39,584   $

4,640  

1.65  

1.63  

43,437

10,887

3.76

3.72

The unaudited supplemental pro forma data reflects the historical information of Merck and Cubist adjusted to include additional amortization expense
based on the fair value of assets acquired, additional interest expense that would have been incurred on borrowings used to fund the acquisition, transaction costs
associated with the acquisition, and the related tax effects of these adjustments. The pro forma data should not be considered indicative of the results that would
have occurred if the acquisition had been consummated on January 1, 2014, nor are they indicative of future results.

2014
Transactions

In December 2014, Merck acquired  OncoEthix, a privately held biotechnology company specializing  in oncology drug development. Total purchase
consideration  in  the  transaction  included  an  upfront  cash  payment  of  $110  million  and  future  additional  milestone  payments  of  up  to  $265  million  that were
contingent upon certain clinical and regulatory milestones being achieved. The transaction was accounted for as an acquisition of a business. Merck recognized an
intangible asset for IPR&D of $143 million related  to  MK-8628  (formerly  OTX015), an  investigational,  novel  oral  BET  (bromodomain)  inhibitor,  as  well  as  a
liability  for  contingent  consideration  of  $43  million  and  other  net  assets  of  $10  million  .  During  2016,  as  a  result  of  unfavorable  efficacy  data,  the  Company
determined that it would discontinue the development of MK-8628. Accordingly, the Company recorded an IPR&D impairment charge of $143 million related to
MK-8628 and reversed the related liability for contingent consideration, which had a fair value of $40 million at the time of program discontinuation. Both the
IPR&D  impairment  charge  and  the  income  related  to  the  reduction  in  the  liability  for  contingent  consideration  were  recorded  in  Research 
and 
development
expenses in 2016.

On  October  1,  2014,  the  Company  completed  the  sale  of  its  Merck  Consumer  Care  (MCC)  business  to  Bayer  AG  (Bayer)  for  $14.2 billion ( $14.0
billion net of cash divested), less customary closing adjustments as well as certain contingent amounts held back that were payable upon the manufacturing site
transfer in Canada and regulatory approval

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in Korea. Under the terms of the agreement, Bayer acquired Merck’s existing over-the-counter business, including the global trademark and prescription rights for
Claritin and Afrin. The Company recognized a pretax gain from the sale of MCC of $11.2 billion recorded in Other
(income)
expense,
net
in 2014.

Also on October  1, 2014, the Company entered  into a worldwide  clinical  development  collaboration  with Bayer AG (Bayer)  to market  and develop
soluble  guanylate  cyclase  (sGC)  modulators  including  Bayer’s  Adempas  (riociguat),  which  is  approved  to  treat  pulmonary  arterial  hypertension  and  chronic
thromboembolic pulmonary hypertension. The two companies will equally share costs and profits from the collaboration and implement a joint development and
commercialization strategy. The collaboration also includes clinical development of Bayer’s vericiguat, which is in Phase 3 trials for worsening heart failure, as
well as opt-in rights for other early-stage sGC compounds in development at Bayer. Merck in turn made available its early-stage sGC compounds under similar
terms. In return for these broad collaboration rights, Merck made an upfront payment to Bayer of $1.0 billion with the potential for additional milestone payments
of up to $1.1 billion upon the achievement of agreed-upon sales goals. Under the agreement, Bayer will lead commercialization of Adempas in the Americas, while
Merck will lead commercialization in the rest of the world. For vericiguat and other potential opt-in products, Bayer will lead in the rest of world and Merck will
lead in the Americas. For all products and candidates included in the agreement, both companies will share in development costs and profits on sales and will have
the  right  to  co-promote  in  territories  where  they  are  not the  lead.  The  Company determined  that  Merck’s  payment  to  access  Bayer’s  compounds  constituted  an
acquisition of an asset. Of the $1.0 billion consideration paid by Merck, $915 million of fair value related to Adempas and was capitalized as an intangible asset
subject  to  amortization  over  its  estimated  useful  life  of  12  years  ,  and  the  remaining  $85  million  of  fair  value  related  to  the  vericiguat  compound  in  clinical
development  and  was  expensed  within  Research 
and 
development
 expenses.  The  fair  values  of  Adempas  and  vericiguat  were  determined  using  an  income
approach.  The  probability-adjusted  future  net  cash  flows  were  then  discounted  to  present  value  using  a  discount  rate  of  10.0%  for  Adempas  and  10.5%  for
vericiguat. During the second quarter of 2016, the Company determined it was probable that, in 2017, Adempas sales would exceed the threshold triggering a $350
million milestone payment from Merck to Bayer. Accordingly, in the second quarter of 2016, the Company recorded a $350 million liability and a corresponding
intangible asset and also recognized $50 million of cumulative amortization expense within Materials
and
production
costs. The remaining intangible asset at June
30,  2016 of  $300 million is  being amortized  over its  then-remaining  estimated  useful  life  of  10.5 years  as  supported  by  projected  future  cash  flows,  subject  to
impairment testing. The remaining potential future milestone payments of $775 million have not yet been accrued as they are not deemed by the Company to be
probable at this time.

In August 2014, Merck completed the acquisition of Idenix Pharmaceuticals, Inc. (Idenix) for approximately $3.9 billion in cash ( $3.7 billion net of
cash acquired). Idenix was a biopharmaceutical company engaged in the discovery and development of medicines for the treatment of human viral diseases, whose
primary focus was on the development of next-generation oral antiviral therapeutics to treat hepatitis C virus (HCV) infection. The transaction was accounted for as
an acquisition of a business. Merck recognized an intangible asset for IPR&D of $3.2 billion related to MK-3682 (formerly IDX21437), uprifosbuvir, as well as net
deferred tax liabilities of $951 million and other net liabilities of $12 million . Uprifosbuvir is a nucleotide prodrug in clinical development being evaluated for the
treatment of HCV infection. The excess of the consideration transferred over the fair value of net assets acquired of $1.5 billion was recorded as goodwill that was
allocated to the Pharmaceutical segment and is not deductible for tax purposes. The fair value of the identifiable intangible asset related to IPR&D was determined
using an income approach. The asset’s probability-adjusted future net cash flows were then discounted to present value using a discount rate of 11.5% . During
2016,  the  Company  recorded  a  $  2.9  billion  IPR&D  impairment  charge  related  to  uprifosbuvir  that  resulted  from  recent  changes  to  the  product  profile  taken
together with changes to the Company’s expectations for pricing and the market opportunity (see Note 7).

In May 2014, Merck entered into an agreement to sell certain ophthalmic products to Santen Pharmaceutical Co., Ltd. (Santen) in Japan and markets in
Europe and Asia Pacific. The agreement provided for upfront payments from Santen and additional payments based on defined sales milestones. Santen will also
purchase supply of ophthalmology products covered by the agreement for a two - to five -year period. The transaction closed in most markets on July 1, 2014 and
in the remaining markets on October 1, 2014. The Company received $565 million of upfront payments from Santen, net of certain adjustments, and recognized
gains of $480 million on the transactions in 2014 included in Other
(income)
expense,
net
.

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In March 2014, Merck sold its Sirna Therapeutics, Inc. (Sirna) subsidiary to Alnylam Pharmaceuticals, Inc. (Alnylam) for consideration of $25 million
and  2,520,044  shares  of  Alnylam  common  stock.  Merck  is  eligible  to  receive  future  payments  associated  with  the  achievement  of  certain  regulatory  and
commercial  milestones,  as  well  as  royalties  on  future  sales.  Merck  recorded  a  gain  of  $204  million  in  Other 
(income) 
expense, 
net
 in  2014  related  to  this
transaction. The excess of Merck’s tax basis in its investment in Sirna over the value received resulted in an approximate $300 million tax benefit recorded in 2014.

In January 2014, Merck sold the U.S. marketing rights to Saphris
, an antipsychotic indicated for the treatment of schizophrenia and bipolar I disorder
in adults to Forest Laboratories, Inc. (Forest). Under the terms of the agreement, Forest made upfront payments of $232 million , which were recorded in Sales
in
2014, and will make additional payments to Merck based on defined sales milestones. In addition, as part of this transaction, Merck agreed to supply product to
Forest (subsequently acquired by Allergan) until patent expiry.

Remicade/Simponi

In 1998, a subsidiary of Schering-Plough entered into a licensing agreement with Centocor Ortho Biotech Inc. (Centocor), a Johnson & Johnson (J&J)
company, to market Remicade,
which is prescribed for the treatment of inflammatory diseases. In 2005, Schering-Plough’s subsidiary exercised an option under its
contract with Centocor for license rights to develop and commercialize Simponi
, a fully human monoclonal antibody. The Company has marketing rights to both
products throughout Europe, Russia and Turkey. Remicade
lost market exclusivity in major European markets in February 2015 and the Company no longer has
market exclusivity in any of its marketing territories . The Company continues to have market exclusivity for Simponi
in all of its marketing territories. All profits
derived from Merck’s distribution of the two products in these countries are equally divided between Merck and J&J.

4.    Restructuring

The Company incurs substantial costs for restructuring program activities related to Merck’s productivity and cost reduction initiatives, as well as in
connection with the integration of certain acquired businesses. In 2010 and 2013, the Company commenced actions under global restructuring programs designed
to streamline its cost structure. The actions under these programs include the elimination of positions in sales, administrative and headquarters organizations, as
well as the sale or closure of certain manufacturing and research and development sites and the consolidation of office facilities. The Company also continues to
reduce its global real estate footprint and improve the efficiency of its manufacturing and supply network. The non-facility related restructuring actions under these
programs are substantially complete; the remaining activities primarily relate to ongoing facility rationalizations.

The  Company  recorded  total  pretax  costs  of  $1.1  billion  in  2016  ,  $1.1  billion  in  2015  and  $2.0  billion  in  2014  related  to  restructuring  program
activities. Since inception of the programs through December 31, 2016 , Merck has recorded total pretax accumulated  costs of approximately $12.6 billion and
eliminated  approximately  40,900  positions  comprised  of  employee  separations,  as  well  as  the  elimination  of  contractors  and  vacant  positions.  The  Company
expects to substantially complete the remaining actions under these programs by the end of 2017 and incur approximately $700 million of additional pretax costs.
The Company estimates that approximately two-thirds of the cumulative pretax costs will result in cash outlays, primarily related to employee separation expense.
Approximately one-third of the cumulative pretax costs are non-cash, relating primarily to the accelerated depreciation of facilities to be closed or divested.

For segment reporting, restructuring charges are unallocated expenses.

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Table of Contents

The following table summarizes the charges related to restructuring program activities by type of cost:

Separation
Costs

Accelerated
Depreciation

Other

Total

Year
Ended
December
31,
2016

Materials and production

Marketing and administrative

Research and development

Restructuring costs

Year
Ended
December
31,
2015

Materials and production

Marketing and administrative

Research and development

Restructuring costs

Year
Ended
December
31,
2014

Materials and production

Marketing and administrative

Research and development

Restructuring costs

$

$

$

$

$

$

—   $

—  

—  

216  

216   $

—   $

—  

—  

208  

208

$

—   $

—  

—  

674  

674

$

77   $

8  

142  

—  

227   $

78   $

59  

37  

—  

174

$

429   $

198  

273  

—  

900

$

104   $

87  

—  

435  

626   $

283   $

19  

15  

411  

728

$

53   $

2  

10  

339  

404

$

181

95

142

651

1,069

361

78

52

619

1,110

482

200

283

1,013

1,978

Separation costs are associated with actual headcount reductions, as well as those headcount reductions which were probable and could be reasonably
estimated.  Positions  eliminated  under  restructuring  program  activities  were  approximately  2,625  in  2016  ,  3,770  in  2015  and  6,085  in  2014  .  These  position
eliminations were comprised of actual headcount reductions and the elimination of contractors and vacant positions.

Accelerated depreciation costs primarily relate to manufacturing, research and administrative facilities and equipment to be sold or closed as part of the
programs. Accelerated depreciation costs represent the difference between the depreciation expense to be recognized over the revised useful life of the asset, based
upon the anticipated date the site will be closed or divested or the equipment disposed of, and depreciation expense as determined utilizing the useful life prior to
the restructuring actions. All of the sites have and will continue to operate up through the respective closure dates and, since future undiscounted cash flows were
sufficient to recover the respective book values, Merck recorded accelerated depreciation of the site assets. Anticipated site closure dates, particularly related to
manufacturing locations, have been and may continue to be adjusted to reflect changes resulting from regulatory or other factors.

Other activity in 2016 , 2015 and 2014 includes $409 million , $550 million and $240 million , respectively, of asset abandonment, shut-down and other
related costs. Additionally, other activity includes certain employee-related costs associated with pension and other postretirement benefit plans (see Note 13) and
share-based compensation. Other activity also reflects net pretax losses resulting from sales of facilities and related assets of $151 million in 2016 , $117 million in
2015 and $133 million in 2014 .

85

 
 
 
 
 
   
   
   
 
 
   
   
   
 
 
   
   
   
 
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The following table summarizes the charges and spending relating to restructuring program activities:

Restructuring reserves January 1, 2015

$

1,031   $

—   $

20   $

Separation
Costs

Accelerated
Depreciation

Other

Total

Expenses

(Payments) receipts, net

Non-cash activity

Restructuring reserves December 31, 2015

Expenses

(Payments) receipts, net

Non-cash activity

208  

(647)  

—  

592  

216  

(413)  

—  

174

—  

(174)

—  

227

—  

(227)

728  

(435)  

(260)  

53  

626  

(347)  

(186)  

Restructuring reserves December 31, 2016 (1)

$

395   $

—   $

146   $

(1)

The
remaining
cash
outlays
are
expected
to
be
substantially
completed
by
the
end
of
2017.

1,051

1,110

(1,082)

(434)

645

1,069

(760)

(413)

541

5.    Financial Instruments

Derivative Instruments and Hedging Activities

The Company manages the impact of foreign exchange rate movements and interest rate movements on its earnings, cash flows and fair values of assets

and liabilities through operational means and through the use of various financial instruments, including derivative instruments.

A significant portion of the Company’s revenues and earnings in foreign affiliates is exposed to changes in foreign exchange rates. The objectives and

accounting related to the Company’s foreign currency risk management program, as well as its interest rate risk management activities are discussed below.

Foreign
Currency
Risk
Management

The Company has established revenue hedging, balance sheet risk management and net investment hedging programs to protect against volatility of

future foreign currency cash flows and changes in fair value caused by volatility in foreign exchange rates.

The objective of the revenue hedging program is to reduce the variability caused by changes in foreign exchange rates that would affect the U.S. dollar
value of future cash flows derived from foreign currency denominated sales, primarily the euro and Japanese yen. To achieve this objective, the Company will
hedge a portion of its forecasted foreign currency denominated third-party and intercompany distributor entity sales (forecasted sales) that are expected to occur
over its planning cycle, typically no more than two years into the future. The Company will layer in hedges over time, increasing the portion of forecasted sales
hedged as it gets closer to the expected date of the forecasted foreign currency denominated sales. The portion of forecasted sales hedged is based on assessments
of cost-benefit profiles that consider natural offsetting exposures, revenue and exchange rate volatilities and correlations, and the cost of hedging instruments. The
Company manages its anticipated transaction exposure principally with purchased local currency put options, forward contracts, and purchased collar options.

The  fair  values  of  these  derivative  contracts  are  recorded  as  either  assets  (gain  positions)  or  liabilities  (loss  positions)  in  the  Consolidated  Balance
Sheet.  Changes  in  the  fair  value  of  derivative  contracts  are  recorded  each  period  in  either  current  earnings  or  OCI
 ,  depending  on  whether  the  derivative  is
designated as part of a hedge transaction and, if so, the type of hedge transaction. For derivatives that are designated as cash flow hedges, the effective portion of
the unrealized gains or losses on these contracts is recorded in AOCI
and reclassified into Sales
when the hedged anticipated revenue is recognized. The hedge
relationship is highly effective and hedge ineffectiveness has been de
minimis
. For those derivatives which are not designated as cash flow hedges, but serve as
economic  hedges  of  forecasted  sales,  unrealized  gains  or  losses  are  recorded  in  Sales
 each  period.  The  cash  flows  from  both  designated  and  non-designated
contracts are reported as operating activities in the Consolidated Statement of Cash Flows. The Company does not enter into derivatives for trading or speculative
purposes.

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The Company manages operating activities and net asset positions at the local level in order to mitigate the effect of exchange on monetary assets and
liabilities. The Company also uses a balance sheet risk management program to mitigate the exposure of net monetary assets that are denominated in a currency
other  than  a  subsidiary’s  functional  currency  from  the  effects  of  volatility  in  foreign  exchange.  In  these  instances,  Merck  principally  utilizes  forward  exchange
contracts  to  offset  the  effects  of  exchange  on  exposures  denominated  in  developed  country  currencies,  primarily  the  euro  and  Japanese  yen.  For  exposures  in
developing country currencies, the Company will enter into forward contracts to partially offset the effects of exchange on exposures when it is deemed economical
to do so based on a cost-benefit analysis that considers the magnitude of the exposure, the volatility of the exchange rate and the cost of the hedging instrument.
The cash flows from these contracts are reported as operating activities in the Consolidated Statement of Cash Flows.

Monetary assets and liabilities denominated in a currency other than the functional currency of a given subsidiary are remeasured at spot rates in effect
on the balance sheet date with the effects of changes in spot rates reported in Other
(income)
expense,
net
. The forward contracts are not designated as hedges and
are marked to market through Other
(income)
expense,
net
. Accordingly, fair value changes in the forward contracts help mitigate the changes in the value of the
remeasured assets and liabilities attributable to changes in foreign currency exchange rates, except to the extent of the spot-forward differences. These differences
are not significant due to the short-term nature of the contracts, which typically have average maturities at inception of less than one year.

The Company may also use forward exchange contracts to hedge its net investment in foreign operations against movements in exchange rates. The
forward  contracts  are  designated  as  hedges  of  the  net  investment  in  a  foreign  operation.  The  Company  hedges  a  portion  of  the  net  investment  in  certain  of  its
foreign operations and measures ineffectiveness based upon changes in spot foreign exchange rates that are recorded in Other
(income)
expense,
net
. The effective
portion of the unrealized gains or losses on these contracts is recorded in foreign currency translation adjustment within OCI
, and remains in AOCI
until either the
sale or complete or substantially complete liquidation of the subsidiary. The cash flows from these contracts are reported as investing activities in the Consolidated
Statement of Cash Flows.

Foreign exchange risk is also managed through the use of foreign currency debt. The Company’s senior unsecured euro-denominated notes have been
designated as, and are effective as, economic hedges of the net investment in a foreign operation. Accordingly, foreign currency transaction gains or losses due to
spot rate fluctuations on the euro-denominated debt instruments are included in foreign currency translation adjustment within OCI
. Included in the cumulative
translation adjustment are pretax gains of $193 million in 2016 , $304 million in 2015 and $294 million in 2014 from the euro-denominated notes.

Interest
Rate
Risk
Management

The Company may use interest rate swap contracts on certain investing and borrowing transactions to manage its net exposure to interest rate changes
and to reduce  its overall  cost  of borrowing.  The Company does not use leveraged  swaps and, in general,  does not leverage  any of its investment  activities  that
would put principal capital at risk.

In May 2016, four interest  rate  swaps with  notional  amounts  of  $250 million each matured.  These swaps effectively  converted  the Company’s $1.0
billion , 0.70% fixed-rate notes due 2016 to variable rate debt. At December 31, 2016 , the Company was a party to 26 pay-floating, receive-fixed interest rate swap
contracts designated as fair value hedges of fixed-rate notes in which the notional amounts match the amount of the hedged fixed-rate notes as detailed in the table
below.

Debt Instrument

1.30% notes due 2018

5.00% notes due 2019

1.85% notes due 2020

3.875% notes due 2021

2.40% notes due 2022

2.35% notes due 2022

Par Value of Debt

Number of Interest Rate
Swaps Held

Total Swap Notional
Amount

2016

1,000

1,250

1,250

1,150

1,000

1,250

4  
3  
5  
5  
4  
5  

1,000

550

1,250

1,150

1,000

1,250

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The interest rate swap contracts are designated hedges of the fair value changes in the notes attributable to changes in the benchmark London Interbank
Offered Rate (LIBOR) swap rate. The fair value changes in the notes attributable to changes in the LIBOR swap rate are recorded in interest expense and offset by
the fair value changes in the swap contracts. The cash flows from these contracts are reported as operating activities in the Consolidated Statement of Cash Flows.

Presented  in  the  table  below  is  the  fair  value  of  derivatives  on  a  gross  basis  segregated  between  those  derivatives  that  are  designated  as  hedging

instruments and those that are not designated as hedging instruments as of December 31:

Balance Sheet Caption

Asset

Liability

2016

Fair Value of
Derivative

2015

Fair Value of
Derivative

Asset

Liability

U.S. Dollar
Notional

U.S. Dollar
Notional

Derivatives
Designated
as
Hedging

Instruments

Interest rate swap contracts

Other assets

Interest rate swap contracts

Accrued and other current liabilities

Interest rate swap contracts

Other noncurrent liabilities

Foreign exchange contracts

Other current assets

Foreign exchange contracts

Other assets

Foreign exchange contracts

Accrued and other current liabilities

Foreign exchange contracts

Other noncurrent liabilities

Derivatives
Not
Designated
as
Hedging
Instruments

Foreign exchange contracts

Other current assets

Foreign exchange contracts

Other assets

Foreign exchange contracts

Accrued and other current liabilities

Foreign exchange contracts

Other noncurrent liabilities

  $

  $

  $

  $
  $

20   $
—  
—  
616  
129  
—  
—  

765

$

230   $
—  
—  
—  
230   $
995   $

88

—   $
—  
29  
—  
—  
1  
1  

31

$

—   $
—  
103  
—  
103   $
134   $

2,700   $
—  
3,500  
6,063  
2,075  
48  
12  

42   $
—  
—  
579  
386  
—  
—  

14,398

$

1,007

$

8,210   $
—  
2,931  
—  
11,141   $
25,539   $

212   $
18  
—  
—  
230   $
1,237   $

—   $
1  
23  
—  
—  
1  
—  

25

$

—   $
—  
37  
1  
38   $
63   $

2,700

1,000

3,500

4,171

4,136

77

—

15,584

8,783

179

2,508

6

11,476

27,060

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
 
 
 
 
 
 
 
Table of Contents

As noted above, the Company records its derivatives on a gross basis in the Consolidated Balance Sheet. The Company has master netting agreements
with  several  of  its  financial  institution  counterparties  (see  Concentrations 
of 
Credit 
Risk
 below).  The  following  table  provides  information  on  the  Company’s
derivative positions subject to these master netting arrangements as if they were presented on a net basis, allowing for the right of offset by counterparty and cash
collateral exchanged per the master agreements and related credit support annexes at December 31:

Gross amounts recognized in the consolidated balance sheet

Gross amount subject to offset in master netting arrangements not offset in the consolidated balance sheet

Cash collateral (received) posted

Net amounts

2016

2015

Asset

Liability

Asset

Liability

$

$

995   $

134   $

1,237   $

(131)  

(529)  

335   $

(131)

—  

3

  $

(59)  

(862)  

316   $

63

(59)

—

4

The table below provides information on the location and pretax gain or loss amounts for derivatives that are: (i) designated in a fair value hedging
relationship,  (ii)  designated  in  a foreign  currency  cash flow hedging  relationship,  (iii)  designated  in a foreign  currency  net  investment  hedging relationship  and
(iv) not designated in a hedging relationship:

Years
Ended
December
31

Derivatives
designated
in
a
fair
value
hedging
relationship

Interest rate swap contracts

Amount of loss (gain) recognized in Other
(income)
expense,
net
 on derivatives (1)

Amount of (gain) loss recognized in Other
(income)
expense,
net
 on hedged item (1)

Derivatives
designated
in
foreign
currency
cash
flow
hedging
relationships

Foreign exchange contracts

Amount of gain reclassified from AOCI
 to Sales

Amount of gain recognized in OCI
 on derivatives



Derivatives
designated
in
foreign
currency
net
investment
hedging
relationships

Foreign exchange contracts

Amount of gain recognized in Other
(income)
expense,
net
 on derivatives  (2)

Amount of loss (gain) recognized in OCI
 on derivatives

Derivatives
not
designated
in
a
hedging
relationship

Foreign exchange contracts

Amount of loss (gain) recognized in Other
(income)
expense,
net
 on derivatives  (3)

Amount of (gain) loss recognized in Sales
 

2016

2015

2014

$

28   $

(29)  

(14)   $

7  

(17)

14

(311)  

(210)  

(724)  

(526)  

(1)  

2  

(4)  

(10)  

132  

—  

(461)  

(1)  

(143)

(775)

(6)

(192)

(516)

15

(1)

There
was
$1
million
, $7
million
and
$3
million
of
ineffectiveness
on
the
hedge
during
2016
,
2015
and
2014
,
respectively.
(2)

There
was
no
ineffectiveness
on
the
hedge.
Represents
the
amount
excluded
from
hedge
effectiveness
testing.
(3)

These
derivative
contracts
mitigate
changes
in
the
value
of
remeasured
foreign
currency
denominated
monetary
assets
and
liabilities
attributable
to
changes
in
foreign
currency
exchange
rates.

At December 31, 2016 , the Company estimates $462 million of pretax net unrealized gains on derivatives maturing within the next 12 months that
hedge foreign currency denominated sales over that same period will be reclassified from AOCI
to Sales
. The amount ultimately reclassified to Sales
may differ as
foreign exchange rates change. Realized gains and losses are ultimately determined by actual exchange rates at maturity.

89

 
 
 
 
 
 
 
 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   


Table of Contents

Investments in Debt and Equity Securities

Information on investments in debt and equity securities at December 31 is as follows:

Corporate notes and bonds

Commercial paper

U.S. government and agency securities

Asset-backed securities

Mortgage-backed securities

Foreign government bonds

Equity securities

2016

2015

Fair
Value

Amortized
Cost

Gross Unrealized

Gains

Losses

Fair
Value

Amortized
Cost

Gross Unrealized

Gains

Losses

$

$

10,577   $
4,330  
2,232  
1,376  
796  
519  
349  
20,179   $

10,601   $
4,330  
2,244  
1,380  
801  
521  
281  
20,158   $

15   $
—  
1  
1  
1  
—  
71  
89   $

  $

(39)
—  

(13)

(5)

(6)

(2)

(3)

(68)

  $

10,259   $
2,977  
1,761  
1,284  
694  
607  
534  
18,116   $

10,299   $
2,977  
1,767  
1,290  
697  
586  
409  
18,025   $

7   $
—  
—  
—  
1  
22  
125  
155   $

(47)

—

(6)

(6)

(4)

(1)

—

(64)

Available-for-sale debt securities included in Short-term
investments
totaled $7.8 billion at December 31, 2016 . Of the remaining debt securities, $10.2

billion mature within five years. At December 31, 2016 and 2015 , there were no debt securities pledged as collateral.

Fair Value Measurements

Fair  value  is  defined  as  the  exchange  price  that  would  be  received  for  an  asset  or  paid  to  transfer  a  liability  (an  exit  price)  in  the  principal  or  most
advantageous  market  for  the  asset  or  liability  in  an  orderly  transaction  between  market  participants  on  the  measurement  date.  The  Company  uses  a  fair  value
hierarchy which maximizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value. There are three levels of inputs
used to measure fair value with Level 1 having the highest priority and Level 3 having the lowest:

Level
1
 — Quoted prices (unadjusted) in active markets for identical assets or liabilities.

Level
2
 — Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, or other inputs that are observable or can

be corroborated by observable market data for substantially the full term of the assets or liabilities.

Level
3
 — Unobservable inputs that are supported by little or no market activity. Level 3 assets or liabilities are those whose values are determined
using pricing models, discounted cash flow methodologies, or similar techniques with significant unobservable inputs, as well as assets or liabilities for which
the determination of fair value requires significant judgment or estimation.

If the inputs used to measure the financial assets and liabilities fall within more than one level described above, the categorization is based on the lowest

level input that is significant to the fair value measurement of the instrument.

90

 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
Table of Contents

Financial
Assets
and
Liabilities
Measured
at
Fair
Value
on
a
Recurring
Basis

Financial assets and liabilities measured at fair value on a recurring basis at December 31 are summarized below:

Fair Value Measurements Using

Fair Value Measurements Using

Quoted Prices
In Active
Markets for
Identical Assets
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

2016

Significant
Unobservable
Inputs
(Level 3)

Total

Quoted Prices
In Active
Markets for
Identical Assets
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

2015

Significant
Unobservable
Inputs
(Level 3)

Total

Assets

Investments

Corporate notes and bonds

Commercial paper

$

U.S. government and agency securities

Asset-backed securities (1)

Mortgage-backed securities (1)

Foreign government bonds

Equity securities

Other
assets
(2)

U.S. government and agency securities

Corporate notes and bonds

Mortgage-backed securities (1)
Asset-backed securities  (1)

Foreign government bonds

Equity securities

Derivative
assets
(3)

Purchased currency options

Forward exchange contracts

Interest rate swaps

Total assets

Liabilities

Other
liabilities

Contingent consideration

Derivative
liabilities
(2)

Forward exchange contracts

Interest rate swaps

Written currency options

Total liabilities

$

$

$

—   $
—  

29
—  
—  
—  

201

230

—  
—  
—  
—  
—  

148

148

—  
—  
—  
—  

10,389

  $

4,330

1,890

1,257

628

518
—  

19,012

313

188

168

119

1
—  

789

644

331

20

995

—   $
—  
—  
—  
—  
—  
—  
—  

—  
—  
—  
—  
—  
—  

—

—  
—  
—  
—  

10,389

  $

4,330

1,919

1,257

628

518

201

19,242

313

188

168

119

1

148

937

644

331

20

995

—   $
—  
—  
—  
—  
—  

360

360

—  
—  
—  
—  
—  

155

155

—  
—  
—  
—  

10,259

  $

2,977

1,761

1,284

694

607
—  

17,582

—  
—  
—  
—  
—  

19

19

1,041

154

42

1,237

—   $
—  
—  
—  
—  
—  
—  
—  

—  
—  
—  
—  
—  
—  

—

—  
—  
—  
—  

10,259

2,977

1,761

1,284

694

607

360

17,942

—

—

—

—

—

174

174

1,041

154

42

1,237

378

$

20,796

$

— $

21,174

$

515

$

18,838

$

—

$

19,353

—   $

—   $

891

  $

891

  $

—   $

—   $

590

  $

—  
—  
—  
—  
—   $

93

29

12

134

134

—  
—  
—  
—  

93

29

12

134

  $

891

  $

1,025

  $

—  
—  
—  
—  
—   $

38

24

1

63

63

—  
—  
—  
—  

  $

590

  $

590

38

24

1

63

653

(1)

(2)

(3)

Primarily
all
of
the
asset-backed
securities
are
highly-rated
(Standard
&
Poor’s
rating
of
AAA
and
Moody’s
Investors
Service
rating
of
Aaa),
secured
primarily
by
auto
loan,
credit
card
and
student 
loan 
receivables, 
with 
weighted-average 
lives 
of 
primarily
 5
years 
or 
less. 
Mortgage-backed 
securities 
represent 
AAA-rated 
securities 
issued 
or 
unconditionally 
guaranteed 
as 
to
payment
of
principal
and
interest
by
U.S.
government
agencies.

The
increase
in
investments
included
in
Other assets reflects
certain
assets
previously
restricted
for
retiree
benefits
that
became
available
to
fund
certain
other
health
and
welfare
benefits
during
2016
(see
Note
13).

The 
fair 
value 
determination 
of 
derivatives 
includes 
the 
impact 
of 
the 
credit 
risk 
of 
counterparties 
to 
the 
derivatives 
and 
the 
Company’s 
own 
credit 
risk, 
the 
effects 
of 
which 
were 
not
significant.

There were no transfers between Level 1 and Level 2 during 2016 . As of December 31, 2016 , Cash
and
cash
equivalents
of $6.5 billion included $5.4

billion of cash equivalents (considered Level 2 in the fair value hierarchy).

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Table of Contents

Contingent
Consideration

Summarized information about the changes in liabilities for contingent consideration is as follows:

Fair value January 1
Changes in fair value (1)

Additions

Payments

Fair value December 31

2016

2015

$

$

590   $

(407)  

733  

(25)  

891   $

428

(16)

228

(50)

590

(1)
Recorded
in
Research and development expenses
and
Materials and production costs.

The changes in fair value in 2016 were largely attributable to the reversal of liabilities related to programs obtained in connection with the acquisitions
of cCAM, OncoEthix and SmartCells (see Note 7). The additions to contingent consideration in 2016 relate to the termination of the SPMSD joint venture (see
Note 8) and the acquisitions of IOmet and Afferent (see Note 3). The additions to contingent consideration in 2015 relate to the acquisitions of Cubist and cCAM
(see Note 3). The payments of contingent consideration in 2016 relate to the first commercial sale of Zerbaxa
in the European Union and in 2015 relate to the first
commercial sale of Zerbaxa
in the United States.

Other
Fair
Value
Measurements

Some of the Company’s financial instruments, such as cash and cash equivalents, receivables and payables, are reflected in the balance sheet at carrying

value, which approximates fair value due to their short-term nature.

The estimated fair value of loans payable and long-term debt (including current portion) at December 31, 2016 , was $25.7 billion compared with a
carrying value of $24.8 billion and at December 31, 2015 , was $27.0 billion compared with a carrying value of $26.4 billion . Fair value was estimated using
recent observable market prices and would be considered Level 2 in the fair value hierarchy.

Concentrations of Credit Risk

On an ongoing basis, the Company monitors concentrations of credit risk associated with corporate and government issuers of securities and financial
institutions  with  which  it  conducts  business.  Credit  exposure  limits  are  established  to  limit  a  concentration  with  any  single  issuer  or  institution.  Cash  and
investments are placed in instruments that meet high credit quality standards, as specified in the Company’s investment policy guidelines.

The  majority  of  the  Company’s  accounts  receivable  arise  from  product  sales  in  the  United  States  and  Europe  and  are  primarily  due  from  drug
wholesalers and retailers,  hospitals, government  agencies, managed health care providers and pharmacy benefit managers.  The Company monitors the financial
performance  and  creditworthiness  of its  customers  so that  it can  properly  assess and respond  to changes  in  their  credit  profile.  The Company also  continues  to
monitor economic conditions, including the volatility associated with international sovereign economies, and associated impacts on the financial markets and its
business, taking into consideration global economic conditions and the ongoing sovereign debt issues in certain European countries. As of December 31, 2016 , the
Company’s total net accounts receivable outstanding for more than one year were approximately $140 million . The Company does not expect to have write-offs or
adjustments to accounts receivable which would have a material adverse effect on its financial position, liquidity or results of operations.

The  Company’s  customers  with  the  largest  accounts  receivable  balances  are:  McKesson  Corporation,  AmerisourceBergen  Corporation,  Cardinal
Health,  Inc.,  Zuellig  Pharma  Ltd.  (Asia  Pacific),  and  AAH  Pharmaceuticals  Ltd  (UK)  which  represented,  in  aggregate,  approximately  40%  of  total  accounts
receivable at December 31, 2016 . The Company monitors the creditworthiness of its customers to which it grants credit terms in the normal course of business.
Bad debts have been minimal. The Company does not normally require collateral or other security to support credit sales.

Derivative financial instruments are executed under International Swaps and Derivatives Association master agreements. The master agreements with
several  of  the  Company’s  financial  institution  counterparties  also  include  credit  support  annexes.  These  annexes  contain  provisions  that  require  collateral  to  be
exchanged depending on the value of the derivative assets and liabilities, the Company’s credit rating, and the credit rating of the counterparty. As

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of December 31, 2016 and 2015 , the Company had received cash collateral of $529 million and $862 million , respectively, from various counterparties and the
obligation to return such collateral is recorded in Accrued
and
other
current
liabilities
. The Company had not advanced any cash collateral to counterparties as of
December 31, 2016 or 2015 .

6.    Inventories

Inventories at December 31 consisted of:

Finished goods

Raw materials and work in process

Supplies

Total (approximates current cost)

Increase to LIFO costs

Recognized as:

Inventories

Other assets

2016

2015

$

1,304   $

4,222  

155  

5,681  

302  

5,983   $

4,866   $

1,117  

$

$

1,343

4,374

168

5,885

384

6,269

4,700

1,569

Inventories  valued  under  the  LIFO  method  comprised  approximately  $2.3  billion  and $2.4  billion  of  inventories  at  December  31,  2016  and 2015 ,
respectively. Amounts recognized as Other
assets
are comprised almost entirely of raw materials and work in process inventories. At December 31, 2016 and 2015
, these amounts included $1.0 billion and $1.5 billion , respectively, of inventories not expected to be sold within one year. In addition, these amounts included $80
million and $63 million at December 31, 2016 and 2015 , respectively, of inventories produced in preparation for product launches.

7.    Goodwill and Other Intangibles

The following table summarizes goodwill activity by segment:

Balance January 1, 2015

$

Acquisitions

Divestitures

Impairments
Other (1)



Balance December 31, 2015 (2)

Acquisitions

Impairments
Other (1)



Pharmaceutical

All Other

11,108   $

4,684  

(18)  

—  

88  

15,862  

207  

—  

6  

1,884   $

29  

—  

(47)  

(5)  

1,861  

275  

(47)  

(2)  

Total

12,992

4,713

(18)

(47)

83

17,723

482

(47)

4

Balance December 31, 2016 (2)

$

16,075   $

2,087   $

18,162

(1)
Other
includes
cumulative
translation
adjustments
on
goodwill
balances
and
certain
other
adjustments.
(2)
Accumulated
goodwill
impairment
losses
at
December
31,
2016
and
2015
were
$187
million
and
$140
million
,
respectively.

In 2016, the additions to goodwill in the Pharmaceutical segment resulted primarily from the acquisitions of Afferent and IOmet (see Note 3), as well as
from the termination of the SPMSD joint venture, which was treated as a step-acquisition for accounting purposes (see Note 8). The addition to goodwill within
other non-reportable segments in 2016 relates to the acquisition of StayWell, which is part of the Healthcare Services segment (see Note 3). In 2015, the additions
to  goodwill  in  the  Pharmaceutical  segment  resulted  primarily  from  the  acquisition  of  Cubist  and  the  reductions  resulted  from  the  divestiture  of  the  Company’s
remaining ophthalmics business in international markets (see Note 3). The impairments of goodwill within other non-reportable segments in 2016 and 2015 relate
to certain businesses within the Healthcare Services segment.

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Other intangibles at December 31 consisted of:

2016

Gross
Carrying
Amount

Accumulated
Amortization

Net

Gross
Carrying
Amount

2015

Accumulated
Amortization

Products and product rights

$

46,269   $

31,919   $

14,350   $

45,949   $

28,514   $

IPR&D

Tradenames

Other

1,653  

215  

1,947  

—  

89  

771  

1,653  

126  

1,176  

4,226  

198  

1,418  

—  

79  

596  

Net

17,435

4,226

119

822

$

50,084   $

32,779   $

17,305   $

51,791   $

29,189   $

22,602

Acquired intangibles include products and product rights, tradenames and patents, which are recorded at fair value, assigned an estimated useful life,
and  are  amortized  primarily  on  a  straight-line  basis  over  their  estimated  useful  lives.  The  increase  in  intangible  assets  for  products  and  product  rights  in  2016
primarily relates to the recognition of intangible assets in connection with the termination of the SPMSD joint venture (see Note 8). Some of the Company’s more
significant acquired intangibles related to marketed products (included in product and product rights above) at December 31, 2016 include Zerbaxa
, $3.3 billion ;
Zetia
, $1.5  billion  ; Sivextro
, $955  million  ; Vytorin
, $938  million  ; Implanon/Nexplanon
$587  million  ; Dificid
, $561  million  ; Gardasil/Gardasil
9, $468
million ;
NuvaRing
, $319 million ; and Nasonex
, $308 million . The Company recognized an intangible asset related to Adempas as a result of the formation of a
collaboration with Bayer in 2014 (see Note 3) that had a carrying value of $872 million at December 31, 2016 reflected in “Other” in the table above.

During 2016 , 2015 and 2014 , the Company recorded impairment  charges related to marketed products and other intangibles of $347 million , $45
million and $1.1 billion , respectively, within Material
and
production
costs. In 2016, the Company lowered its cash flow projections for Zontivity,
a product for
the reduction of thrombotic cardiovascular events in patients with a history of myocardial infarction or with peripheral arterial disease, following several business
decisions  that  reduced  sales  expectations  for  Zontivity
in  the  United  States  and  Europe.  The  Company  utilized  market  participant  assumptions  and  considered
several different scenarios to determine the fair value of the intangible asset related to Zontivity
that, when compared with its related carrying value, resulted in an
impairment  charge  of  $252  million  .  Also  during  2016,  the  Company  wrote-off  $95  million  that  had  been  capitalized  in  connection  with  in-licensed  products
Grastek
and Ragwitek
, allergy immunotherapy tablets that, for business reasons, the Company has determined it will return to the licensor. The charges in 2015
primarily  relate  to  the  impairment  of  customer  relationship  and  tradename  intangibles  for  certain  businesses  within  in  the  Healthcare  Services  segment.  Of  the
amount recorded in 2014, $793 million related to PegIntron,
$244 million related to Victrelis
and $35 million related to Rebetol
, all of which are products for the
treatment of chronic HCV infection. During 2014, developments in the competitive HCV treatment market led to market share losses that were greater than the
Company  had  predicted  causing  changes  in  cash  flow  projections  for  PegIntron
 ,  Victrelis
 and  Rebetol
 that  indicated  the  intangible  asset  values  were  not
recoverable  on  an  undiscounted  cash  flows  basis.  The  Company  utilized  market  participant  assumptions  to  determine  its  best  estimate  of  the  fair  values  of  the
intangible  assets  related  to  PegIntron
, Victrelis
and Rebetol
that,  when  compared  with  their  related  carrying  values,  resulted  in  the  impairment  charges  noted
above.

IPR&D that the Company acquires through business combinations represents the fair value assigned to incomplete research projects which, at the time
of  acquisition,  have  not  reached  technological  feasibility.  Amounts  capitalized  as  IPR&D  are  accounted  for  as  indefinite-lived  intangible  assets,  subject  to
impairment testing until completion or abandonment of the projects. Upon successful completion of each project, the Company will make a separate determination
as to the then useful life of the asset and begin amortization. During 2016 , 2015 and 2014 , $8 million , $280 million and $654 million , respectively, of IPR&D
was reclassified to products and product rights upon receipt of marketing approval in a major market.

During  2016,  the  Company  recorded  $3.6  billion  of  IPR&D  impairment  charges  within  Research 
and 
development
 expenses.  Of  this  amount,  $2.9
billion relates to the clinical development program for uprifosbuvir, a nucleotide prodrug in clinical development being evaluated for the treatment of HCV. The
Company determined that recent changes to the product profile, as well as changes to Merck’s expectations for pricing and the market opportunity, taken together
constituted a triggering event that required the Company to evaluate the uprifosbuvir intangible asset for impairment. Utilizing market participant assumptions, and
considering different scenarios, the Company concluded

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that its best estimate of the current fair value of the intangible asset related to uprifosbuvir was $240 million , resulting in the recognition of the pretax impairment
charge noted above. The IPR&D impairment charges in 2016 also include charges of $180 million and $143 million related to the discontinuation  of programs
obtained in connection with the acquisitions of cCAM and OncoEthix, respectively, resulting from unfavorable efficacy data. An additional $72 million relates to
programs obtained in connection with the SmartCells acquisition following a decision to terminate the lead compound due to a lack of efficacy and to pursue a
back-up compound which reduced projected future cash flows. The IPR&D impairment charges in 2016 also include $112 million related to an in-licensed program
for house dust mite allergies that, for business reasons, will be returned to the licensor. The remaining IPR&D impairment  charges for 2016 primarily relate to
deprioritized pipeline programs that were deemed to have no alternative use during the period, including a $79 million impairment charge for an investigational
candidate  for  contraception.  The  discontinuation  or  delay  of  certain  of  these  clinical  development  programs  resulted  in  a  reduction  of  the  related  liabilities  for
contingent consideration (see Note 3).

During 2015, the Company recorded $63 million of IPR&D impairment charges, of which $50 million related to the surotomycin clinical development
program.  During  2015,  the  Company  received  unfavorable  efficacy  data  from  a  clinical  trial  for  surotomycin.  The  evaluation  of  this  data,  combined  with  an
assessment of the commercial opportunity for surotomycin, resulted in the discontinuation of the program and the IPR&D impairment charge noted above.

During 2014, the Company recorded $49 million of IPR&D impairment charges primarily as a result of changes in cash flow assumptions for certain
compounds obtained in connection with the Company’s joint venture with Supera Farma Laboratorios S.A. (Supera), as well as for the discontinuation of certain
Animal Health programs.

All of the IPR&D projects that remain in development are subject to the inherent risks and uncertainties in drug development and it is possible that the

Company will not be able to successfully develop and complete the IPR&D programs and profitably commercialize the underlying product candidates.

The Company may recognize additional non-cash impairment charges in the future related to other marketed products or pipeline programs and such

charges could be material.

Aggregate  amortization  expense  primarily  recorded  within  Materials 
and
production
 costs  was  $3.8  billion  in 2016 , $4.8  billion  in 2015 and $4.2
billion in 2014 . The estimated aggregate amortization expense for each of the next five years is as follows: 2017 , $3.2 billion ; 2018 , $2.8 billion ; 2019 , $1.4
billion ; 2020 , $1.2 billion ; 2021 , $1.1 billion .

8.    Joint Ventures and Other Equity Method Affiliates

Equity  income  from  affiliates  reflects  the  performance  of  the  Company’s  joint  ventures  and  other  equity  method  affiliates  including  SPMSD  (until
termination on December 31, 2016), certain investment funds, as well as AZLP (until the termination of the Company’s relationship with AZLP on June 30, 2014).
Equity income from affiliates was $86 million in 2016 , $205 million in 2015 and $257 million in 2014 and is included in Other
(income)
expense,
net
(see Note
14).

Investments in affiliates accounted for using the equity method totaled $715 million at December 31, 2016 and $702 million at December 31, 2015 .
These amounts are reported in Other
assets
. Amounts due from the above joint ventures included in Other
current
assets
were $1 million at December 31, 2016
and $34 million at December 31, 2015 .

Sanofi
Pasteur
MSD

In 1994, Merck and Pasteur Mérieux Connaught (now Sanofi Pasteur S.A.) established an equally-owned joint venture (SPMSD) to market vaccines in
Europe and to collaborate  in the development of combination vaccines for distribution in Europe. Joint venture vaccine sales were $1.0 billion for 2016 , $923
million for 2015 and $1.1 billion for 2014 .

On December 31, 2016, Merck and Sanofi Pasteur (Sanofi) terminated SPMSD and ended their joint vaccines operations in Europe. Under the terms of
the termination, Merck acquired Sanofi’s 50% interest in SPMSD in exchange for consideration of $657 million comprised of cash, as well as future royalties of
11.5% on net sales of all Merck products through December 31, 2024, which the Company determined had a fair value of $416 million on the date of

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termination. The Company accounted for this transaction as a step acquisition, which required that Merck remeasure its ownership interest (previously accounted
for as an equity method investment) to fair value at the acquisition date. Merck in turn sold to Sanofi its intellectual property rights held by SPMSD in exchange for
consideration of $596 million comprised of cash and future royalties of 11.5% on net sales of all Sanofi products through December 31, 2024, which the Company
determined had a fair value of $302 million on the date of termination. Excluded from this arrangement are potential future sales of Vaxelis
(a jointly developed
investigational pediatric hexavalent combination vaccine that was approved by the European Commission in February 2016). The European marketing rights for
Vaxelis
were transferred to a separate equally-owned joint venture between Sanofi and Merck (MCM).

The net impact of the termination of the SPMSD joint venture is as follows:

Products and product rights (8 year useful life)

Accounts receivable

Income taxes payable

Deferred income tax liabilities

Other, net
Goodwill 
(1)

Net assets acquired

Consideration payable to Sanofi, net

Derecognition of Merck’s previously held equity investment in SPMSD

Increase in net assets

Merck’s share of restructuring costs related to the termination

Net gain on termination of SPMSD joint venture (2)

(1)
The
goodwill
was
allocated
to
the
Pharmaceutical
segment
and
is
not
deductible
for
tax
purposes.
(2)
Recorded
in
Other (income) expense, net .

$

$

936

133

(221)

(175)

34

20

727

(378)

(183)

166

(77)

89

The estimated  fair values of identifiable  intangible  assets related  to products and product rights were determined  using an income approach through
which fair value is estimated based on market participant expectations of each asset’s projected net cash flows. The projected net cash flows were then discounted
to  present  value  utilizing  a  discount  rate  of  11.5% .  Actual  cash  flows  are  likely  to  be  different  than  those  assumed.  Of  the  amount  recorded  for  products  and
product rights, $468 million relates to Gardasil/Gardasil
9.

The  fair  value  of  liabilities  for  contingent  consideration  related  to  Merck’s  future  royalty  payments  to  Sanofi  of  $416  million  (reflected  in  the
consideration  payable  to  Sanofi,  net,  in  the  table  above)  was  determined  at  the  acquisition  date  using  unobservable  inputs.  These  inputs  include  the  estimated
amount and timing of projected cash flows and a risk-adjusted discount rate of 8% used to present value the cash flows. Changes in the inputs could result in a
different fair value measurement.

Based  on  an  existing  accounting  policy  election,  Merck  has  not  recorded  the  $302  million  estimated  fair  value  of  contingent  future  royalties  to  be

received from Sanofi on the sale of Sanofi products, but rather will recognize such amounts in future periods as sales occur and the royalties are earned.

The  Company  incurred  $24 million of  transaction  costs  related  to  the  termination  of  SPMSD  included  in  Marketing 
and
administrative
 expenses in

2016.

Pro  forma  financial  information  for  this  transaction  has  not  been  presented  as  the  results  are  not  significant  when  compared  with  the  Company’s

financial results.

AstraZeneca
LP

In  1982,  Merck  entered  into  an  agreement  with  Astra  AB  (Astra)  to  develop  and  market  Astra  products  under  a  royalty-bearing  license.  In  1993,
Merck’s total sales of Astra products reached a level that triggered the first step in the establishment of a joint venture business carried on by Astra Merck Inc.
(AMI),  in  which  Merck  and  Astra  each  owned  a  50%  share.  This  joint  venture,  formed  in  1994,  developed  and  marketed  most  of  Astra’s  new  prescription
medicines in the United States. In 1998, Merck and Astra completed a restructuring of the ownership and operations of the joint venture whereby Merck acquired
Astra’s interest in AMI, renamed KBI Inc. (KBI), and contributed KBI’s

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operating assets to a new U.S. limited partnership, Astra Pharmaceuticals L.P. (the Partnership), in exchange for a 1% limited partner interest. Astra contributed the
net  assets  of  its  wholly  owned  subsidiary,  Astra  USA,  Inc.,  to  the  Partnership  in  exchange  for  a  99%  general  partner  interest.  The  Partnership,  renamed
AstraZeneca  LP  (AZLP)  upon  Astra’s  1999  merger  with  Zeneca  Group  Plc,  became  the  exclusive  distributor  of  the  products  for  which  KBI  retained  rights.  In
connection with the 1998 restructuring of AMI, Merck assumed $2.4 billion par value preferred stock with a dividend rate of 5%  per annum, which was carried by
KBI and included in Noncontrolling
interests
.

Merck earned revenue based on sales of KBI products and such revenue was  $463 million in 2014 primarily relating to sales of Nexium, as well as

Prilosec. In addition, Merck earned certain Partnership returns from AZLP of $192 million in 2014, which were recorded in equity income from affiliates.

On June 30, 2014, AstraZeneca exercised its option to purchase Merck’s interest in KBI for $419 million in cash. Of this amount, $327 million reflected
an estimate of the fair value of Merck’s interest in Nexium and Prilosec. This portion of the exercise price, which is subject to a true-up in 2018 based on actual
sales  from closing  in 2014 to June 2018, was deferred  and recognized  as income of  $5 million , $182 million and $140 million , during 2016, 2015 and 2014,
respectively, in Other
(income)
expense,
net
as the contingency was eliminated as sales occurred. Once the deferred income amount was fully amortized, in the first
quarter of 2016, the Company began recognizing income and a corresponding receivable for amounts that will be due to Merck from AstraZeneca based on the
sales performance of Nexium and Prilosec subject to the true-up in June 2018. The Company recognized $93 million of such income in 2016 included in Other
(income)
expense,
net
.

The remaining exercise price of $91 million primarily represents a multiple of ten times Merck’s average 1% annual profit allocation in the partnership
for the three years prior to exercise. Merck recognized the $91 million as a gain in 2014 within Other
(income)
expense,
net
. As a result of AstraZeneca’s option
exercise, the Company’s remaining interest in AZLP was redeemed. Accordingly, the Company also recognized a non-cash gain of approximately $650 million in
2014 within Other
(income)
expense,
net
resulting from the retirement of the $2.4 billion of KBI preferred stock, the elimination of the Company’s $1.4 billion
investment in AZLP and a $340 million reduction of goodwill. This transaction resulted in a net tax benefit of $517 million in 2014 primarily reflecting the reversal
of deferred taxes on the AZLP investment balance.

As a  result  of  AstraZeneca  exercising  its  option,  as  of  July  1, 2014, the  Company  no  longer  records  equity  income  from  AZLP and  supply  sales  to

AZLP have terminated.

Summarized financial information for AZLP is as follows:

Year
Ended
December
31

Sales

Materials and production costs

Other expense, net
Income before taxes (2)

$

2014 (1)

2,205

1,044

604

557

(1)
Includes
results
through
the
June
30,
2014
termination
date.
(2)
Merck’s 
partnership 
returns 
from 
AZLP 
were 
generally 
contractually 
determined 
as 
noted 
above 
and 
were 
not 
based 
on 
a 
percentage 
of 
income 
from 
AZLP, 
other 
than 
with 
respect 
to

Merck’s
1%
limited
partnership
interest.

9.    Loans Payable, Long-Term Debt and Other Commitments

Loans payable at December 31, 2016 included $300 million of notes due in 2017 and $267 million of long-dated notes that are subject to repayment at
the option of the holder. Loans payable at December 31, 2015 included $2.3 billion of notes due in 2016 , $10 million of short-term foreign borrowings and $225
million of  long-dated  notes  that  are  subject  to  repayment  at  the  option  of  the  holders.  The  weighted-average  interest  rate  of  commercial  paper  borrowings  was
0.40% and 0.07% for the years ended December 31, 2016 and 2015 , respectively.

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Long-term debt at December 31 consisted of:

2.75% notes due 2025

3.70% notes due 2045

2.80% notes due 2023

5.00% notes due 2019

1.85% notes due 2020

4.15% notes due 2043

2.35% notes due 2022

3.875% notes due 2021

1.125% euro-denominated notes due 2021

1.875% euro-denominated notes due 2026

2.40% notes due 2022

Floating-rate borrowing due 2018

1.10% notes due 2018

1.30% notes due 2018

6.50% notes due 2033

Floating-rate notes due 2020

6.55% notes due 2037

0.50% euro-denominated notes due 2024

1.375% euro-denominated notes due 2036

2.50% euro-denominated notes due 2034

3.60% notes due 2042

5.85% notes due 2039

5.75% notes due 2036

5.95% debentures due 2028

6.40% debentures due 2028

6.30% debentures due 2026

Floating-rate notes due 2017

Other

2016

2015

$

2,487   $

1,972  

1,743  

1,273  

1,238  

1,236  

1,228  

1,152  

1,035  

1,028  

1,003  

999  

999  

985  

806  

698  

594  

516  

512  

511  

489  

415  

369  

355  

325  

152  

—  

154  

2,485

1,971

1,742

1,283

1,239

1,236

1,233

1,158

1,091

1,084

1,011

998

998

985

809

698

596

—

—

538

489

415

369

354

325

152

300

270

$

24,274   $

23,829

Other (as presented in the table above) included $147 million and $223 million at December 31, 2016 and 2015 , respectively, of borrowings at variable
rates  that  resulted  in  effective  interest  rates  of  0.89%  and  zero  for  2016  and  2015  ,  respectively.  Other  also  included  foreign  borrowings  of  $43  million  at
December 31, 2015 at varying rates up to 4.75% .

With the exception of the 6.30% debentures due 2026, the notes listed in the table above are redeemable in whole or in part, at Merck’s option at any

time, at varying redemption prices.

In November 2016, the Company issued €1.0 billion principal amount of senior unsecured notes consisting of €500 million principal amount of 0.50%
notes due 2024 and €500 million principal amount of 1.375% notes due 2036. The Company intends to use the net proceeds  of the offering  of  $1.1 billion for
general  corporate  purposes,  including  without  limitation,  the  repayment  of  outstanding  commercial  paper  borrowings  and  other  indebtedness  with  upcoming
maturities.

In October 2014, the Company issued €2.5 billion principal amount of senior unsecured notes. The net proceeds of the offering of $3.1 billion were
used in part to repay debt that was validly tendered in connection with tender offers launched by the Company for certain outstanding notes and debentures. The
Company paid $2.5 billion in aggregate consideration (applicable purchase price together with accrued interest) to redeem $1.8 billion principal

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amount of debt. In November 2014, Merck redeemed an additional $2.0 billion principal amount of senior unsecured notes. The Company recorded a pretax loss of
$628 million in 2014 in connection with these transactions.

Effective as of November 3, 2009, the Company executed a full and unconditional guarantee of the then existing debt of its subsidiary Merck Sharp &
Dohme Corp. (MSD) and MSD executed a full and unconditional guarantee of the then existing debt of the Company (excluding commercial paper), including for
payments of principal and interest. These guarantees do not extend to debt issued subsequent to that date.

Certain of the Company’s borrowings require that Merck comply with financial covenants including a requirement that the Total Debt to Capitalization

Ratio (as defined in the applicable agreements) not exceed 60% . At December 31, 2016 , the Company was in compliance with these covenants.

The aggregate maturities of long-term debt for each of the next five years are as follows: 2017 , $301 million ; 2018 , $3.0 billion ; 2019 , $1.3 billion ;

2020 , $1.9 billion ; 2021 , $2.2 billion .

In June 2016, the Company terminated its existing credit facility and entered into a new $6.0 billion , five -year credit facility that matures in June 2021.
The facility provides backup liquidity for the Company’s commercial paper borrowing facility and is to be used for general corporate purposes. The Company has
not drawn funding from this facility.

Rental  expense  under  operating  leases,  net  of  sublease  income,  was  $292  million  in 2016 , $303  million  in 2015 and $350  million  in 2014 . The
minimum aggregate rental commitments under noncancellable leases are as follows: 2017 , $200 million ; 2018 , $141 million ; 2019 , $122 million ; 2020 , $88
million ; 2021 , $63 million and thereafter, $140 million . The Company has no significant capital leases.

10.    Contingencies and Environmental Liabilities

The Company is involved in various claims and legal proceedings of a nature considered normal to its business, including product liability, intellectual
property, and commercial litigation, as well as certain additional matters including environmental matters. In the opinion of the Company, it is unlikely that the
resolution of these matters will be material to the Company’s financial position, results of operations or cash flows.

Given  the  nature  of  the  litigation  discussed  below  and  the  complexities  involved  in  these  matters,  the  Company  is  unable  to  reasonably  estimate  a
possible  loss  or  range  of  possible  loss  for  such  matters  until  the  Company  knows, among  other  factors,  (i)  what  claims,  if  any,  will  survive  dispositive  motion
practice,  (ii)  the  extent  of  the  claims,  including  the  size  of  any  potential  class,  particularly  when  damages  are  not  specified  or  are  indeterminate,  (iii)  how  the
discovery process will affect the litigation, (iv) the settlement posture of the other parties to the litigation and (v) any other factors that may have a material effect
on the litigation.

The  Company  records  accruals  for  contingencies  when it  is  probable  that  a  liability  has  been  incurred  and  the  amount  can  be  reasonably  estimated.
These accruals are adjusted periodically as assessments change or additional information becomes available. For product liability claims, a portion of the overall
accrual is actuarially determined and considers such factors as past experience, number of claims reported and estimates of claims incurred but not yet reported.
Individually significant contingent losses are accrued when probable and reasonably estimable. Legal defense costs expected to be incurred in connection with a
loss contingency are accrued when probable and reasonably estimable.

The  Company’s  decision  to  obtain  insurance  coverage  is  dependent  on  market  conditions,  including  cost  and  availability,  existing  at  the  time  such
decisions are made. The Company has evaluated its risks and has determined that the cost of obtaining product liability insurance outweighs the likely benefits of
the coverage that is available and, as such, has no insurance for most product liabilities effective August 1, 2004.

Vioxx Litigation

Product
Liability
Lawsuits

As previously disclosed, Merck was a defendant in a number of putative class action lawsuits alleging economic injury as a result of the purchase of
Vioxx
, all but one of which have been settled. Under the settlement, Merck agreed to pay up to $23 million to resolve all properly documented claims submitted by
class members, approved attorneys’ fees and expenses, and approved settlement notice costs and certain other administrative expenses. The claims

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review process has been completed with the Company paying approximately $700,000 . The amount of attorneys’ fees to be paid is yet to be determined.

Merck  is  also  a  defendant  in  a  lawsuit  (together  with  the  above-referenced  lawsuits,  the  Vioxx
Product  Liability  Lawsuits)  brought  by  the  Attorney
General of Utah. The lawsuit is pending in Utah state court. Utah alleges that Merck misrepresented the safety of Vioxx
and seeks damages and penalties under the
Utah  False  Claims  Act.  No  trial  date  has  been  set.  Merck  recently  reached  agreements  with  the  Attorneys  General  in  Alaska  and  Montana  to  settle  their  state
consumer protection act cases against the Company for $15.25 million and $16.7 million , respectively. As a result, Alaska’s action was dismissed with prejudice
on September 30, 2016, and Montana’s action was dismissed with prejudice on October 6, 2016.

Shareholder
Lawsuits

As previously disclosed, in addition to the Vioxx
Product Liability Lawsuits, various putative class actions and individual lawsuits were filed against
Merck and certain former employees alleging that the defendants violated federal securities laws by making alleged material  misstatements and omissions with
respect to the cardiovascular safety of Vioxx
( Vioxx
Securities Lawsuits). The Vioxx
Securities Lawsuits were coordinated in a multidistrict litigation in the U.S.
District Court for the District of New Jersey before Judge Stanley R. Chesler. As previously disclosed, Merck reached a resolution of the  Vioxx
securities class
action for which a reserve was recorded in 2015 and under which Merck created a settlement fund in 2016 of $830 million (the Settlement Class Fund) and agreed
to  pay  an  additional  amount  for  approved  attorneys’  fees  and  expenses  up  to  $232  million  (the  Fee/Expense  Fund).  On  June  28,  2016,  the  court  approved  the
settlement  and  awarded  attorneys’  fees  and  expenses  in  the  amount  of  $222  million  ;  the  remaining  amount  of  the  Fee/Expense  Fund  will  be  added  to  the
Settlement Class Fund. The Company paid the total settlement amount into escrow in April 2016. After available funds under certain insurance policies, Merck’s
net cash payment for the settlement and fees was approximately $680 million . The settlement covers all claims relating to Vioxx
by settlement class members who
purchased  Merck  securities  between  May  21,  1999,  and  October  29,  2004.  The  settlement  is  not  an  admission  of  wrongdoing  and,  as  part  of  the  settlement
agreement, defendants continue to deny the allegations.

In  addition,  Merck  reached  a  resolution  of  the  above  referenced  individual  securities  lawsuits  filed  by  foreign  and  domestic  institutional  investors,

which were also consolidated with the Vioxx
Securities Lawsuits.

Insurance

As  a  result  of  the  previously  disclosed  insurance  arbitration,  the  Company’s  insurers  paid  insurance  proceeds  of  approximately  $380  million  in
connection with the settlement of the class action. The Company also has Directors and Officers insurance coverage applicable to the Vioxx
Securities Lawsuits
with remaining stated upper limits of approximately $145 million , which the Company has not received. There are disputes with the insurers about the availability
of the Company’s Directors and Officers insurance coverage for these claims. The amounts actually recovered under the Directors and Officers policies discussed
in this paragraph may be less than the stated upper limits.

International
Lawsuits

As previously disclosed, in addition to the lawsuits discussed above, Merck has been named as a defendant in litigation relating to Vioxx
in Brazil and
Europe (collectively, the Vioxx
International Lawsuits). The litigation in these jurisdictions is generally in procedural stages and Merck expects that the litigation
may continue for a number of years.

Reserves

The  Company  has  an  immaterial  reserve  with  respect  to  certain  Vioxx
Product  Liability  Lawsuits.  The  Company  has  established  no  other  liability
reserves  for,  and  believes  that  it  has  meritorious  defenses  to,  the  remaining  Vioxx
Product Liability  Lawsuits and Vioxx
International  Lawsuits and will defend
against them.

Other Product Liability Litigation

Fosamax

As  previously  disclosed,  Merck  is  a  defendant  in  product  liability  lawsuits  in  the  United  States  involving  Fosamax
 (  Fosamax
 Litigation).  As  of

December 31, 2016 , approximately 4,230 cases are filed and pending against

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Merck in either federal or state court. In approximately 20 of these actions, plaintiffs allege, among other things, that they have suffered osteonecrosis of the jaw
(ONJ),  generally  subsequent  to  invasive  dental  procedures,  such  as  tooth  extraction  or  dental  implants  and/or  delayed  healing,  in  association  with  the  use  of
Fosamax
.  In  addition,  plaintiffs  in  approximately  4,210 of these  actions  generally  allege  that  they sustained  femur  fractures  and/or  other  bone injuries  (Femur
Fractures) in association with the use of Fosamax
.

Cases
Alleging
ONJ
and/or
Other
Jaw
Related
Injuries

In August 2006, the Judicial Panel on Multidistrict  Litigation (JPML) ordered that certain  Fosamax
product liability cases pending in federal courts

nationwide should be transferred and consolidated into one multidistrict litigation ( Fosamax
ONJ MDL) for coordinated pre-trial proceedings.

In  December  2013,  Merck  reached  an  agreement  in  principle  with  the  Plaintiffs’  Steering  Committee  (PSC)  in  the  Fosamax
ONJ  MDL  to  resolve
pending ONJ cases not on appeal in the Fosamax
ONJ MDL and in the state courts for an aggregate amount of $27.7 million . Merck and the PSC subsequently
formalized the terms of this agreement in a Master Settlement Agreement (ONJ Master Settlement Agreement) that was executed in April 2014 and included over
1,200  plaintiffs.  In  July  2014,  Merck  elected  to  proceed  with  the  ONJ  Master  Settlement  Agreement  at  a  reduced  funding  level  of  $27.3  million  since  the
participation level was approximately 95% . Merck has fully funded the ONJ Master Settlement Agreement and the escrow agent under the agreement has been
making settlement payments to qualifying plaintiffs. The ONJ Master Settlement Agreement has no effect on the cases alleging Femur Fractures discussed below.

Discovery  is  currently  ongoing  in  some  of  the  approximately  20 remaining  ONJ  cases  that  are  pending  in  various  federal  and  state  courts  and  the

Company intends to defend against these lawsuits.

Cases
Alleging
Femur
Fractures

In March 2011, Merck submitted a Motion to Transfer to the JPML seeking to have all federal cases alleging Femur Fractures consolidated into one
multidistrict litigation for coordinated pre-trial proceedings. The Motion to Transfer was granted in May 2011, and all federal cases involving allegations of Femur
Fracture have been or will be transferred to a multidistrict litigation in the District of New Jersey (Femur Fracture MDL). In the only bellwether case tried to date
in  the  Femur  Fracture  MDL,  Glynn 
v. 
Merck
 ,  the  jury  returned  a  verdict  in  Merck’s  favor.  In  addition,  in  June  2013,  the  Femur  Fracture  MDL  court  granted
Merck’s motion for judgment as a matter of law in the Glynn
case and held that the plaintiff’s failure to warn claim was preempted by federal law.

In  August  2013,  the  Femur  Fracture  MDL  court  entered  an  order  requiring  plaintiffs  in  the  Femur  Fracture  MDL  to  show  cause  why  those  cases
asserting claims for a femur fracture injury that took place prior to September 14, 2010, should not be dismissed based on the court’s preemption decision in the
Glynn
case. Pursuant to the show cause order, in March 2014, the Femur Fracture MDL court dismissed with prejudice approximately 650 cases on preemption
grounds. Plaintiffs in approximately 515 of those cases are appealing that decision to the U.S. Court of Appeals for the Third Circuit (Third Circuit). The Femur
Fracture  MDL  court  has  since  dismissed  without  prejudice  another  approximately  540  cases  pending  plaintiffs’  appeal  of  the  preemption  ruling  to  the  Third
Circuit. On June 30, 2016, the Third Circuit heard oral argument on plaintiffs’ appeal of the preemption ruling and the parties are awaiting the decision.

In  addition,  in  June  2014,  the  Femur  Fracture  MDL  court  granted  Merck  summary  judgment  in  the  Gaynor
v. 
Merck
 case  and  found  that  Merck’s
updates in January 2011 to the Fosamax
label regarding atypical femur fractures were adequate as a matter of law and that Merck adequately communicated those
changes. The plaintiffs in Gaynor
have appealed the court’s decision to the Third Circuit. In August 2014, Merck filed a motion requesting that the court enter a
further order requiring all plaintiffs in the Femur Fracture MDL who claim that the 2011 Fosamax
label is inadequate and the proximate cause of their alleged
injuries to show cause why their cases should not be dismissed based on the court’s preemption decision and its ruling in the Gaynor
case. In November 2014, the
court granted Merck’s motion and entered the requested show cause order.

As of December 31, 2016 , seven cases were pending in the Femur Fracture MDL, excluding the 515 cases dismissed with prejudice on preemption

grounds that are pending appeal and the 540 cases dismissed without prejudice that are also pending the aforementioned appeal.

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As of December 31, 2016 , approximately 2,860 cases alleging Femur Fractures have been filed in New Jersey state court and are pending before Judge
Jessica Mayer in Middlesex County. The parties selected an initial group of 30 cases to be reviewed through fact discovery. Two additional groups of 50 cases each
to be reviewed through fact discovery were selected in November 2013 and March 2014, respectively. A further group of  25 cases to be reviewed through fact
discovery was selected by Merck in July 2015, and Merck has continued to select additional cases to be reviewed through fact discovery during 2016.

As of December 31, 2016 , approximately 280 cases alleging Femur Fractures have been filed and are pending in California state court. A petition was
filed seeking to coordinate all Femur Fracture cases filed in California state court before a single judge in Orange County, California. The petition was granted and
Judge  Thierry  Colaw  is  currently  presiding  over  the  coordinated  proceedings.  In  March  2014,  the  court  directed  that  a  group  of  10  discovery  pool  cases  be
reviewed  through  fact  discovery  and  subsequently  scheduled  the  Galper 
v. 
Merck
 case,  which  plaintiffs  selected,  as  the  first  trial.  The  Galper
 trial  began  in
February  2015  and  the  jury  returned  a  verdict  in  Merck’s  favor  in  April  2015,  and  plaintiff  has  appealed  that  verdict  to  the  California  appellate  court.  Oral
argument on plaintiff’s appeal in Galper
was held on November 17, 2016 and the parties are awaiting a decision. The next Femur Fracture trial in California that
was scheduled to begin in April 2016 was stayed at plaintiffs’ request and a new trial date has not been set.

Additionally, there are five Femur Fracture cases pending in other state courts.

Discovery  is  ongoing  in  the  Femur  Fracture  MDL  and  in  state  courts  where  Femur  Fracture  cases  are  pending  and  the  Company  intends  to  defend

against these lawsuits.

Januvia/Janumet

As previously disclosed, Merck is a defendant in product liability lawsuits in the United States involving Januvia
and/or Janumet
. As of December 31,
2016 , approximately 1,195 product  user  claims  have  been  served  on  Merck  alleging  generally  that  use  of  Januvia
and/or Janumet
caused  the  development  of
pancreatic cancer and other injuries. These complaints were filed in several different state and federal courts.

Most of the claims were filed in a consolidated multidistrict litigation proceeding in the U.S. District Court for the Southern District of California called
“In re Incretin-Based Therapies Products Liability Litigation” (MDL). The MDL includes federal lawsuits alleging pancreatic cancer due to use of the following
medicines: Januvia,
Janumet
, Byetta and Victoza, the latter two of which are products manufactured by other pharmaceutical companies. The majority of claims
not filed in the MDL were filed in the Superior Court of California, County of Los Angeles (California State Court). As of December 31, 2016, eight product users
have claims pending against Merck in state courts other than the California State Court.

In November 2015, the MDL and California State Court - in separate opinions - granted summary judgment to defendants on grounds of preemption. Of

the approximately 1,195 served product user claims, these rulings resulted in the dismissal of approximately 1,100 product user claims.

Plaintiffs are appealing the MDL and California State Court preemption rulings.

In  addition  to  the  claims  noted  above,  the  Company  has  agreed,  as  of  December  31,  2016  ,  to  toll  the  statute  of  limitations  for  approximately  50

additional claims. The Company intends to continue defending against these lawsuits.

Propecia/Proscar

As previously disclosed, Merck is a defendant in product liability lawsuits in the United States involving Propecia
and/or Proscar
. As of December 31,
2016 ,  approximately    1,330 lawsuits  have  been  filed  by  plaintiffs  who  allege  that  they  have  experienced  persistent  sexual  side  effects  following  cessation  of
treatment with Propecia
and/or Proscar
. Approximately 50 of the plaintiffs also allege that Propecia
or Proscar
has caused or can cause prostate cancer, testicular
cancer or male breast cancer. The lawsuits have been filed in various federal courts and in state court in New Jersey. The federal lawsuits have been consolidated
for pretrial purposes in a federal multidistrict litigation before Judge Brian Cogan of the Eastern District of New York. The matters pending in state court in New
Jersey have been consolidated before Judge Jessica Mayer in Middlesex County. In addition, there is one matter pending in state court in California, one matter
pending in state court in New York, and one matter pending in state court in Ohio. The Company intends to defend against these lawsuits.

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Governmental Proceedings

As previously disclosed, the Company has received a civil investigative demand from the U.S. Attorney’s Office for the Southern District of New York
that requests information relating to the Company’s contracts with, services from and payments to pharmacy benefit managers with respect to Maxalt
and Levitra
from January 1, 2006 to the present. The Company is cooperating with the investigation.

As previously  disclosed,  the  Company  has  received  a  subpoena  from  the  Office  of  Inspector  General  of  the  U.S. Department  of  Health  and  Human
Services  on  behalf  of  the  U.S.  Attorney’s  Office  for  the  District  of  Maryland  and  the  Civil  Division  of  the  U.S.  Department  of  Justice  (DOJ)  that  requests
information relating to the Company’s marketing of Singulair
and Dulera
Inhalation Aerosol and certain of its other marketing activities from January 1, 2006 to
the present. The Company is cooperating with the investigation.

As previously disclosed, the Company had received a civil investigative demand from the U.S. Attorney’s Office, Eastern District of Pennsylvania that
requested information relating to the Company’s contracting and pricing of Dulera
Inhalation Aerosol with certain pharmacy benefit managers and Medicare Part
D plans. The Company cooperated with the investigation and, in August 2016, the Company learned that the underlying qui
tam
complaint had been unsealed and
voluntarily dismissed with prejudice as to the relator and without prejudice as to the government. The DOJ informed the Company that the matter is inactive and
that there is no current investigation.

As previously disclosed, the Company has received letters from the DOJ and the SEC that seek information about activities in a number of countries
and reference the Foreign Corrupt Practices Act. The Company has cooperated with the agencies in their requests and believes that this inquiry is part of a broader
review of pharmaceutical industry practices in foreign countries. As previously disclosed, the Company has been advised by the DOJ that, based on the information
that it has received, it has closed its inquiry into this matter as it relates to the Company. The Company has also recently been advised by the SEC that it has closed
its inquiry into this matter as it relates to the Company.

As  previously  disclosed,  the  Company’s  subsidiaries  in  China  have  received  and  may  continue  to  receive  inquiries  regarding  their  operations  from
various  Chinese  governmental  agencies.  Some  of  these  inquiries  may  be  related  to  matters  involving  other  multinational  pharmaceutical  companies,  as  well  as
Chinese entities doing business with such companies. The Company’s policy is to cooperate with these authorities and to provide responses as appropriate.

From time to time, the Company receives inquiries and is the subject of preliminary investigation activities from Competition Authorities in various
markets  outside  the  United  States.  Certain  of  these  inquiries  or  activities  may  lead  to  the  commencement  of  formal  proceedings.  Should  those  proceedings  be
determined adversely to the Company, monetary fines and/or remedial undertakings may be required.

Commercial and Other Litigation

K-DUR
Antitrust
Litigation

As previously disclosed, in June 1997 and January 1998, Schering-Plough Corporation (Schering-Plough) settled patent litigation with Upsher-Smith,
Inc.  (Upsher-Smith)  and  ESI  Lederle,  Inc.  (Lederle),  respectively,  relating  to  generic  versions  of  Schering-Plough’s  long-acting  potassium  chloride  product
supplement used by cardiac patients, for which Lederle and Upsher-Smith had filed Abbreviated New Drug Applications (ANDAs). Following the commencement
of an administrative proceeding by the U.S. Federal Trade Commission in 2001 alleging anti-competitive effects from those settlements (which was resolved in
Schering-Plough’s  favor),  putative  class  and  non-class  action  suits  were  filed  on  behalf  of  direct  and  indirect  purchasers  of  K-DUR  against  Schering-Plough,
Upsher-Smith and Lederle and were consolidated in a multidistrict litigation in the U.S. District Court for the District of New Jersey. These suits claimed violations
of federal and state antitrust laws, as well as other state statutory and common law causes of action, and sought unspecified damages. In April 2008, the indirect
purchasers voluntarily dismissed their case. In February 2016, the District Court denied the Company’s motion for summary judgment relating to all of the direct
purchasers’ claims concerning the settlement with Upsher-Smith and granted the Company’s motion for summary judgment relating to all of the direct purchasers’
claims  concerning  the  settlement  with  Lederle.  In  anticipation  of  trial,  the  parties  filed  motions  to  exclude  certain  expert  opinions  and  other  evidence,  and
defendants filed a motion for summary judgment.

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In February 2017, Merck and Upsher-Smith reached a settlement in principle with the class of direct purchasers and the opt-outs to the class. Merck will
contribute approximately $80 million in the aggregate towards the overall settlement. Formal settlement agreements with the class and the opt-outs have yet to be
executed and the settlement with the class is subject to approval by the District Court.

Sales
Force
Litigation

As previously disclosed, in May 2013, Ms. Kelli Smith filed a complaint against the Company in the U.S. District Court for the District of New Jersey
on  behalf  of  herself  and  a  putative  class  of  female  sales  representatives  and  a  putative  sub-class  of  female  sales  representatives  with  children,  claiming  (a)
discriminatory  policies  and  practices  in  selection,  promotion  and  advancement,  (b)  disparate  pay,  (c)  differential  treatment,  (d)  hostile  work  environment  and
(e) retaliation under federal and state discrimination laws. Plaintiffs sought and were granted leave to file an amended complaint. In January 2014, plaintiffs filed
an amended complaint adding four additional named plaintiffs. In October 2014, the court denied the Company’s motion to dismiss or strike the class claims as
premature. In September 2015, plaintiffs filed additional motions, including a motion for conditional certification under the Equal Pay Act; a motion to amend the
pleadings seeking to add ERISA and constructive discharge claims and a Company subsidiary as a named defendant; and a motion for equitable relief. Merck filed
papers in opposition to the motions. On April 27, 2016, the court granted plaintiff’s motion for conditional certification but denied plaintiffs’ motions to extend the
liability period for their Equal Pay Act claims back to June 2009. As a result, the liability period will date back to April 2012, at the earliest. On April 29, 2016, the
Magistrate Judge granted plaintiffs’ request to amend the complaint to add the following: (i) a Company subsidiary as a corporate defendant; (ii) an ERISA claim
and (iii) an individual constructive discharge claim for one of the named plaintiffs. Approximately 700 individuals have opted-in to this action; the opt-in period
has closed.

Qui
Tam
Litigation

As previously  disclosed,  on June  21, 2012,  the  U.S. District  Court  for  the  Eastern  District  of  Pennsylvania  unsealed  a  complaint  that  has been  filed
against the Company under the federal False Claims Act by two former employees alleging, among other things, that the Company defrauded the U.S. government
by falsifying data in connection with a clinical study conducted on the mumps component of the Company’s M-M-R
II vaccine. The complaint alleges the fraud
took place between 1999 and 2001. The U.S. government had the right to participate in and take over the prosecution of this lawsuit, but notified the court that it
declined  to  exercise  that  right.  The  two former  employees  are  pursuing  the  lawsuit  without  the  involvement  of  the  U.S. government.  In  addition,  as  previously
disclosed, two putative class action lawsuits on behalf of direct purchasers of the M‑M‑R
 II vaccine, which charge that the Company misrepresented the efficacy
of the M-M-R
II vaccine in violation of federal antitrust laws and various state consumer protection laws, are pending in the Eastern District of Pennsylvania. In
September 2014, the court denied Merck’s motion to dismiss the False Claims Act suit and granted in part and denied in part its motion to dismiss the then-pending
antitrust  suit.  As  a  result,  both  the  False  Claims  Act  suit  and  the  antitrust  suits  have  proceeded  into  discovery.  The  Company  intends  to  defend  against  these
lawsuits.

Merck
KGaA
Litigation

In  January  2016,  to  protect  its  long-established  brand  rights  in  the  United  States,  the  Company  filed  a  lawsuit  against  Merck  KGaA,  Darmstadt,
Germany  (KGaA),  operating  as  the  EMD  Group  in  the  United  States,  alleging  it  improperly  uses  the  name  “Merck”  in  the  United  States.  KGaA  has  filed  suit
against the Company in France, the United Kingdom (UK), Germany, Switzerland, Mexico, and India alleging breach of the parties’ co-existence agreement, unfair
competition and/or trademark infringement. In December 2015, the Paris Court of First Instance issued a judgment finding that certain activities by the Company
directed towards France did not constitute trademark infringement and unfair competition while other activities were found to infringe. The Company and KGaA
have both appealed the decision, and the appeal is scheduled to be heard in May 2017. In January 2016, the UK High Court issued a judgment finding that the
Company had breached the co-existence agreement and infringed KGaA’s trademark rights as a result of certain activities directed towards the UK based on use of
the word MERCK on promotional and information activity. As noted in the UK decision, this finding was not based on the Company’s use of the sign MERCK in
connection with the sale of products or any material pharmaceutical business transacted in the UK. The Company and KGaA have both appealed this decision, and
the appeal is scheduled to be heard in June 2017.

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Patent Litigation

From  time  to  time,  generic  manufacturers  of  pharmaceutical  products  file  ANDAs  with  the  U.S.  Food  and  Drug  Administration  (FDA)  seeking  to
market generic forms of the Company’s products prior to the expiration of relevant patents owned by the Company. To protect its patent rights, the Company may
file patent infringement lawsuits against such generic companies. Certain products of the Company (or products marketed via agreements with other companies)
currently  involved  in  such  patent  infringement  litigation  in  the  United  States  include:  Cancidas
, Invanz
, Nasonex
, Noxafil
, and NuvaRing
. Similar lawsuits
defending the Company’s patent rights  may exist in other countries.  The Company intends  to vigorously defend  its patents, which it believes  are  valid, against
infringement by companies attempting to market products prior to the expiration of such patents. As with any litigation, there can be no assurance of the outcomes,
which,  if  adverse,  could  result  in  significantly  shortened  periods  of  exclusivity  for  these  products  and,  with  respect  to  products  acquired  through  acquisitions,
potentially significant intangible asset impairment charges.

Cancidas
 — In February 2014, a patent infringement lawsuit was filed in the United States against Xellia Pharmaceuticals ApS (Xellia) with respect to
Xellia’s  application  to  the  FDA seeking  pre-patent  expiry  approval  to  market  a  generic  version  of  Cancidas
.  In  June  2015,  the  district  court  found  that  Xellia
infringed the Company’s patent and ordered that Xellia’s application not be approved until the patent expires in September 2017 (including pediatric exclusivity).
Xellia appealed this decision, and the appeal was heard in March 2016. In May 2016, the parties reached a settlement whereby Xellia can launch its generic version
in August 2017, or earlier under certain conditions. In August 2014, a patent infringement lawsuit was filed in the United States against Fresenius Kabi USA, LLC
(Fresenius) in respect of Fresenius’s application to the FDA seeking pre-patent expiry approval to market a generic version of Cancidas
. In December 2016, the
parties reached a settlement whereby Fresenius can launch its generic version in August 2017, or earlier under certain conditions.

Invanz
 — In July 2014, a patent infringement lawsuit was filed in the United States against Hospira in respect of Hospira’s application to the FDA
seeking pre-patent expiry approval to market a generic version of Invanz
. The trial in this matter was held in April 2016 and, in October 2016, the district court
ruled that the patent is valid and infringed. In August 2015, a patent infringement lawsuit was filed in the United States against Savior Lifetec Corporation (Savior)
in  respect  of  Savior’s  application  to  the  FDA  seeking  pre-patent  expiry  approval  to  market  a  generic  version  of  Invanz
.  The  lawsuit  automatically  stays  FDA
approval of Savior’s application until November 2017 or until an adverse court decision, if any, whichever may occur earlier.

Nasonex
— In July 2014, a patent infringement lawsuit was filed in the United States against Teva Pharmaceuticals USA, Inc. (Teva Pharma) in respect
of Teva Pharma’s application to the FDA seeking pre-patent expiry approval to market a generic version of Nasonex
. The trial in this matter was held in June
2016. In November 2016, the district court ruled that the patent was valid but not infringed. The Company has appealed this decision. In March 2015, a patent
infringement lawsuit was filed in the United States against Amneal Pharmaceuticals LLC (Amneal) in respect of Amneal’s application to the FDA seeking pre-
patent expiry approval to market a generic version of Nasonex
. The trial in this matter was held in June 2016. In January 2017, the district court ruled that the
patent was valid but not infringed. The Company has appealed this decision.

A  previous  decision,  issued  in  June  2013,  held  that  the  Merck  patent  in  the  Teva  Pharma  and  Amneal  lawsuits  covering  mometasone  furoate
monohydrate was valid, but that it was not infringed by Apotex Corp.’s proposed product. In April 2015, a patent infringement lawsuit was filed against Apotex
Inc. and Apotex Corp. (Apotex) in respect of Apotex’s now-launched product that the Company believes differs from the generic version in the previous lawsuit.

Noxafil
— In August 2015, the Company filed a lawsuit against Actavis Laboratories Fl, Inc. (Actavis) in the United States in respect of that company’s
application  to  the  FDA  seeking  pre-patent  expiry  approval  to  sell  a  generic  version  of  Noxafil
 .  The  lawsuit  automatically  stays  FDA  approval  of  Actavis’s
application until December 2017 or until an adverse court decision, if any, whichever may occur earlier. The trial in this matter is currently scheduled to begin in
July 2017. In March 2016, the Company filed a lawsuit against Roxane Laboratories, Inc. (Roxane) in the United States in respect of that company’s application to
the  FDA  seeking  pre-patent  expiry  approval  to  sell  a  generic  version  of  Noxafil
.  The  lawsuit  automatically  stays  FDA  approval  of  Roxane’s  application  until
August 2018 or until an adverse court decision, if any, whichever may occur earlier. In February 2016, the Company filed a lawsuit against Par Sterile Products
LLC, Par Pharmaceutical, Inc., Par Pharmaceutical Companies, Inc. and Par Pharmaceutical Holdings, Inc. (collectively, Par) in the United States in respect of that
company’s application to the FDA seeking pre-

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patent expiry approval to sell a generic version of Noxafil
. In October 2016, the parties reached a settlement whereby Par can launch its generic version in January
2023, or earlier under certain conditions.

NuvaRing
— In December 2013, the Company filed a lawsuit against a subsidiary of Allergan plc in the United States in respect of that company’s
application to the FDA seeking pre-patent expiry approval to sell a generic version of NuvaRing
. The trial in this matter was held in January 2016. In August 2016,
the  district  court  ruled  that  the  patent  was  invalid  and  the  Company  has  appealed  this  decision.  In  September  2015,  the  Company  filed  a  lawsuit  against  Teva
Pharma in the United States in respect of that company’s application to the FDA seeking pre-patent expiry approval to sell a generic version of NuvaRing
. Based
on its ruling in the Allergan plc matter, the district court dismissed the Company’s lawsuit in December 2016. The Company has appealed this decision.

The Company had been involved in ongoing litigation in Canada with Apotex concerning the Company’s patents related to lovastatin, alendronate, and
norfloxacin.  All  of  the  litigation  has  now  been  either  settled  or  concluded.  As  a  consequence  of  the  conclusion  of  all  of  this  litigation,  in  2016,  the  Company
recorded a net gain of $117 million included in Other
(income)
expense,
net
(see Note 14).

Anti-PD-1 Antibody Patent Oppositions and Litigation

As  previously  disclosed,  Ono  Pharmaceutical  Co.  (Ono)  has  a  European  patent  (EP  1  537  878)  (’878)  that  broadly  claims  the  use  of  an  anti-PD-1
antibody,  such  as  the  Company’s  immunotherapy,  Keytruda
,  for  the  treatment  of  cancer.  Ono  has  previously  licensed  its  commercial  rights  to  an  anti-PD-1
antibody to Bristol-Myers Squibb (BMS) in certain markets. BMS and Ono also own European Patent EP 2 161 336 (’336) that, as granted, broadly claimed anti-
PD-1 antibodies that could include Keytruda
.

As previously disclosed, the Company and BMS and Ono were engaged in worldwide litigation, including in the United States, over the validity and

infringement of the ‘878 patent, the ‘336 patent and their equivalents.

In  January  2017,  the  Company  announced  that  it  had  entered  into  a  settlement  and  license  agreement  with  BMS  and  Ono  resolving  the  worldwide
patent  infringement  litigation  related  to  the  use  of  an  anti-PD-1  antibody  for  the  treatment  of  cancer,  such  as  Keytruda
 .  Under  the  settlement  and  license
agreement, the Company made a one-time payment of $625 million (which was recorded as an expense in the Company’s 2016 financial results) to BMS and will
pay royalties on the worldwide sales of Keytruda
for a non-exclusive license to market Keytruda
in any market in which it is approved. For global net sales of
Keytruda
, the Company will pay royalties as follows:

• 

• 

6.5% of net sales occurring from January 1, 2017 through and including December 31, 2023; and

2.5% of net sales occurring from January 1, 2024 through and including December 31, 2026.

The parties also agreed to dismiss all claims worldwide in the relevant legal proceedings.

In October 2015, PDL Biopharma (PDL) filed a lawsuit in the United States against the Company alleging that the manufacture of Keytruda
infringed
US  Patent  No.  5,693,761  (’761  patent),  which  expired  in  December  2014.  This  patent  claims  platform  technology  used  in  the  creation  and  manufacture  of
recombinant antibodies and PDL is seeking damages for pre-expiry infringement of the ’761 patent.

In July 2016, the Company filed a declaratory judgment action in the United States against Genentech and City of Hope seeking a ruling that US Patent
No.  7,923,221  (the  Cabilly  III  patent),  which  claims  platform  technology  used  in  the  creation  and  manufacture  of  recombinant  antibodies,  is  invalid  and  that
Keytruda
and bezlotoxumab do not infringe the Cabilly III patent. In July 2016, the Company also filed a petition in the USPTO for Inter
Partes
Review (IPR) of
certain  claims  of  US  Patent  No.  6,331,415  (the  Cabilly  II  patent),  which  claims  platform  technology  used  in  the  creation  and  manufacture  of  recombinant
antibodies and is also owned by Genentech and City of Hope, as being invalid. In December 2016, the USPTO denied the petition but allowed the Company to join
an IPR filed previously by another party.

Gilead Patent Litigation and Opposition

In August 2013, Gilead Sciences, Inc. (Gilead) filed a lawsuit in the U.S. District Court for the Northern District of California seeking a declaration that
two  Company  patents  were  invalid  and  not  infringed  by  the  sale  of  their  two  sofosbuvir  containing  products,  Solvadi  and  Harvoni.  The  Company  filed  a
counterclaim that the sale of these

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products did infringe these two patents and sought a reasonable royalty for the past, present and future sales of these products. In March 2016, at the conclusion of
a  jury  trial,  the  patents  were  found  to  be  not  invalid  and  infringed.  The  jury  awarded  the  Company  $200 million as  a  royalty  for  sales  of  these  products  up  to
December 2015. After the conclusion of the jury trial, the court held a bench trial on the equitable defenses raised by Gilead. In June 2016, the court found for
Gilead and determined that Merck could not collect the jury award and that the patents were unenforceable with respect to Gilead. The Company has appealed the
court’s decision. Gilead has also asked the court to overturn the jury’s decision on validity. The court held a hearing on Gilead’s motion in August 2016, and the
court  subsequently  rejected  Gilead’s  request.  The  Company  will  pay  20%  ,  net  of  legal  fees,  of  damages  or  royalties,  if  any,  that  it  receives  to  Ionis
Pharmaceuticals, Inc.

The Company, through its Idenix Pharmaceuticals, Inc. subsidiary, has pending litigation against Gilead in the United States, the UK, Norway, Canada,
Germany,  France,  and  Australia  based  on  different  patent  estates  that  would  also  be  infringed  by  Gilead’s  sales  of  these  two  products.  Gilead  has  opposed  the
European patent at the EPO. Trial in the United States was held in December 2016 and the jury returned a verdict for the Company, awarding damages of $2.54
billion .  The  Company  is  currently  briefing  post-trial  motions,  including  on  the  issues  of  enhanced  damages  and  future  royalties.  Gilead  is  briefing  post-trial
motions for judgment as a matter of law. In the UK, Australia and Canada, the Company was initially unsuccessful and those cases are currently under appeal. In
Norway, the patent was held invalid and no further appeal was filed. The EPO opposition division revoked the European patent, and the Company has appealed this
decision. The cases in France and Germany have been stayed pending the final decision of the EPO.

Other Litigation

There are various other pending legal proceedings involving the Company, principally product liability and intellectual property lawsuits. While it is not
feasible  to  predict  the  outcome  of  such  proceedings,  in  the  opinion  of  the  Company,  either  the  likelihood  of  loss  is  remote  or  any  reasonably  possible  loss
associated with the resolution of such proceedings is not expected to be material to the Company’s financial position, results of operations or cash flows either
individually or in the aggregate.

Legal Defense Reserves

Legal defense costs expected to be incurred in connection with a loss contingency are accrued when probable and reasonably estimable. Some of the
significant  factors  considered  in  the  review  of  these  legal  defense  reserves  are  as  follows:  the  actual  costs  incurred  by  the  Company;  the  development  of  the
Company’s  legal  defense  strategy  and  structure  in  light  of  the  scope  of  its  litigation;  the  number  of  cases  being  brought  against  the  Company;  the  costs  and
outcomes of completed trials and the most current information regarding anticipated timing, progression, and related costs of pre-trial activities and trials in the
associated litigation. The amount of legal defense reserves as of December 31, 2016 and December 31, 2015 of approximately $185 million and $245 million ,
respectively, represents the Company’s best estimate of the minimum amount of defense costs to be incurred in connection with its outstanding litigation; however,
events such as additional trials and other events that could arise in the course of its litigation could affect the ultimate amount of legal defense costs to be incurred
by the Company. The Company will continue to monitor its legal defense costs and review the adequacy of the associated reserves and may determine to increase
the reserves at any time in the future if, based upon the factors set forth, it believes it would be appropriate to do so.

Environmental Matters

As previously disclosed,  Merck’s facilities  in Oss, the Netherlands,  were inspected  by the Province of Brabant (the Province) pursuant to the Dutch
Hazards of Major Accidents Decree and the sites’ environmental permits. The Province issued penalties for alleged violations of regulations governing preventing
and managing accidents with hazardous substances, and the government also issued a fine for alleged environmental violations at one of the Oss facilities, which
together  totaled  $235  thousand  .  The  Company  was  subsequently  advised  that  a  criminal  investigation  had  been  initiated  based  upon  certain  of  the  issues  that
formed the basis of the administrative enforcement action by the Province. The Company intends to defend itself against any enforcement action that may result
from this investigation.

In May 2015, the Environmental Protection Agency conducted an air compliance evaluation of the Company’s pharmaceutical manufacturing facility in

Elkton, Virginia. As a result of the investigation, the Company

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was  recently  issued  a  Notice  of  Noncompliance  and  Show  Cause  Notification  relating  to  certain  federally  enforceable  requirements  applicable  to  the  Elkton
facility. The Company is attempting to resolve these alleged violations by way of settlement but will defend itself if settlement cannot be reached.

The Company and its subsidiaries are parties to a number of proceedings brought under the Comprehensive Environmental Response, Compensation
and  Liability  Act,  commonly  known as  Superfund,  and  other  federal  and  state  equivalents.  These  proceedings  seek  to  require  the  operators  of  hazardous  waste
disposal facilities, transporters of waste to the sites and generators of hazardous waste disposed of at the sites to clean up the sites or to reimburse the government
for cleanup costs. The Company has been made a party to these proceedings as an alleged generator of waste disposed of at the sites. In each case, the government
alleges that the defendants are jointly and severally liable for the cleanup costs. Although joint and several liability is alleged, these proceedings are frequently
resolved so that the allocation of cleanup costs among the parties more nearly reflects the relative contributions of the parties to the site situation. The Company’s
potential  liability  varies  greatly  from  site  to  site.  For  some  sites  the  potential  liability  is  de
minimis
and for others  the final  costs of cleanup  have  not yet  been
determined. While it is not feasible to predict the outcome of many of these proceedings brought by federal or state agencies or private litigants, in the opinion of
the  Company,  such  proceedings  should  not  ultimately  result  in  any  liability  which  would  have  a  material  adverse  effect  on  the  financial  position,  results  of
operations, liquidity or capital resources of the Company. The Company has taken an active role in identifying and accruing for these costs and such amounts do
not include any reduction for anticipated recoveries of cleanup costs from former site owners or operators or other recalcitrant potentially responsible parties.

In management’s opinion, the liabilities for all environmental matters that are probable and reasonably estimable have been accrued and totaled $83
million and $109 million at December 31, 2016 and 2015 , respectively. These liabilities are undiscounted, do not consider potential recoveries from other parties
and  will  be  paid  out  over  the  periods  of  remediation  for  the  applicable  sites,  which  are  expected  to  occur  primarily  over  the  next  15  years.  Although it is not
possible to predict with certainty the outcome of these matters, or the ultimate costs of remediation,  management does not believe that any reasonably possible
expenditures that may be incurred in excess of the liabilities  accrued should exceed $64 million in the aggregate. Management also does not believe that these
expenditures should result in a material adverse effect on the Company’s financial position, results of operations, liquidity or capital resources for any year.

11.    Equity

The Merck certificate of incorporation authorizes 6,500,000,000  shares of common stock and 20,000,000  shares of preferred stock.

Capital
Stock

A summary of common stock and treasury stock transactions (shares in millions) is as follows:

Balance January 1

Purchases of treasury stock
Issuances (1)



Balance December 31

2016

2015

2014

Common
Stock

Treasury
Stock

Common
Stock

Treasury
Stock

Common
Stock

Treasury
Stock

3,577  

—  

—  

3,577  

796

60

(28)

828

3,577  

—  

—  

3,577  

739

75

(18)

796

3,577  

—  

—  

3,577  

650

134

(45)

739

(1)

Issuances
primarily
reflect
activity
under
share-based
compensation
plans.

12.    Share-Based Compensation Plans

The Company has share-based compensation plans under which the Company grants restricted stock units (RSUs) and performance share units (PSUs)
to  certain  management  level  employees.  The  Company  also  issues  RSUs  to  employees  of  certain  of  the  Company’s  equity  method  investees.  In  addition,
employees and non-employee directors may be granted options to purchase shares of Company common stock at the fair market value at the time of grant. These
plans were approved by the Company’s shareholders.

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At December 31, 2016 , 125 million shares collectively were authorized for future grants under the Company’s share-based compensation plans. These

awards are settled primarily with treasury shares.

Employee stock options are granted to purchase shares of Company stock at the fair market value at the time of grant. These awards generally vest one-

third each year over a three -year period, with a contractual term of 7 - 10  years. RSUs are stock awards that are granted to employees and entitle the holder to
shares of common stock as the awards vest. The fair value of the stock option and RSU awards is determined and fixed on the grant date based on the Company’s
stock price. PSUs are stock awards where the ultimate number of shares issued will be contingent on the Company’s performance against a pre-set objective or set
of objectives. The fair value of each PSU is determined on the date of grant based on the Company’s stock price. For RSUs and PSUs, dividends declared during
the vesting period are payable to the employees only upon vesting. Over the PSU performance period, the number of shares of stock that are expected to be issued
will be adjusted based on the probability of achievement of a performance target and final compensation expense will be recognized based on the ultimate number
of shares issued. RSU and PSU distributions will be in shares of Company stock after the end of the vesting or performance period, generally three years, subject to
the terms applicable to such awards.

Total pretax share-based compensation cost recorded in 2016 , 2015 and 2014 was $300 million , $299 million and $278 million , respectively, with

related income tax benefits of $92 million , $93 million and $86 million , respectively.

The Company uses the Black-Scholes option pricing model for determining the fair value of option grants. In applying this model, the Company uses
both historical  data  and current  market  data  to estimate  the fair  value  of its options. The Black-Scholes  model  requires  several  assumptions including  expected
dividend yield, risk-free interest rate, volatility, and term of the options. The expected dividend yield is based on historical patterns of dividend payments. The risk-
free rate is based on the rate at grant date of zero-coupon U.S. Treasury Notes with a term equal to the expected term of the option. Expected volatility is estimated
using a blend of historical and implied volatility. The historical component is based on historical monthly price changes. The implied volatility is obtained from
market  data  on  the  Company’s  traded  options.  The  expected  life  represents  the  amount  of  time  that  options  granted  are  expected  to  be  outstanding,  based  on
historical and forecasted exercise behavior.

The weighted average exercise price of options granted in 2016 , 2015 and 2014 was $54.63 , $59.73 and $58.14 per option, respectively. The weighted
average  fair  value  of  options  granted  in  2016 , 2015 and 2014 was $5.89 , $6.46 and $6.79 per  option,  respectively,  and  were  determined  using  the  following
assumptions:

Years
Ended
December
31

Expected dividend yield

Risk-free interest rate

Expected volatility

Expected life (years)

2016

2015

2014

3.8%  

1.4%  

19.6%  

6.2

4.1%  

1.7%  

19.9%  

6.2

4.3%

2.0%

22.0%

6.4

Summarized information relative to stock option plan activity (options in thousands) is as follows:

Outstanding January 1, 2016

Granted

Exercised

Forfeited

Outstanding December 31, 2016

Exercisable December 31, 2016

Weighted
Average
Exercise
Price

Weighted
Average
Remaining
Contractual
Term (Years)

Aggregate
Intrinsic
Value

Number
of Options

64,668   $

6,220  

(23,846)  

(1,951)  

45,091   $

41.64    

54.63    

39.39    
45.14    
44.47  

34,311   $

40.87  

4.42   $

3.12   $

654

619

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Additional information pertaining to stock option plans is provided in the table below:

Years
Ended
December
31

Total intrinsic value of stock options exercised

Fair value of stock options vested

Cash received from the exercise of stock options

A summary of nonvested RSU and PSU activity (shares in thousands) is as follows:

2016

2015

2014

$

444   $

332   $

626

35

1,560

28  

939  

30  

485  

PSUs

Nonvested January 1, 2016

Granted

Vested

Forfeited

Nonvested December 31, 2016

RSUs

Weighted
Average
Grant Date
Fair Value

Number
of Shares

13,400   $

5,617  

(4,956)  

(795)  

13,266   $

53.73  

54.67  

45.06  

56.65  

57.19  

Number
of Shares

1,884   $

733  

(786)  

(87)  

1,744   $

Weighted
Average
Grant Date
Fair Value

55.33

57.38

48.18

58.82

59.24

At December 31, 2016 , there was $443 million of total pretax unrecognized compensation expense related to nonvested stock options, RSU and PSU

awards which will be recognized over a weighted average period of 1.9 years. For segment reporting, share-based compensation costs are unallocated expenses.

13.    Pension and Other Postretirement Benefit Plans

The  Company  has  defined  benefit  pension  plans  covering  eligible  employees  in  the  United  States  and  in  certain  of  its  international  subsidiaries.  In
addition, the Company provides medical benefits, principally to its eligible U.S. retirees and their dependents, through its other postretirement benefit plans. The
Company uses December 31 as the year-end measurement date for all of its pension plans and other postretirement benefit plans.

Net
Periodic
Benefit
Cost

The net periodic benefit cost for pension and other postretirement benefit plans consisted of the following components:

Years
Ended
December
31

2016

Service cost

Interest cost

Expected return on plan assets

Net amortization

Termination benefits

Curtailments

Settlements

$

  $

282

456

(831)

64

23

5
—  

Net periodic benefit (credit) cost

$

(1)

  $

Pension Benefits

  $

U.S.

2015

307

434

(819)

158

22

(12)

1

91

  $

International

Other Postretirement Benefits

2014

2016

2015

2014

2016

2015

2014

300   $
425  
(782)  
74  
53  
(69)  
11  
12   $

238   $
204  
(382)  
76  
4  
(1)  
6  
145   $

251   $
206  
(379)  
104  
1  
(9)  
12  
186   $

266   $
269  
(416)  
59  
11  
(4)  
6  
191   $

54   $
82  
(107)  
(103)  
4  
(18)  
—  
(88)   $

80   $
110  
(143)  
(59)  
7  
(19)  
—  
(24)   $

78

115

(139)

(71)

22

(39)

—

(34)

The changes in net periodic benefit (credit) cost year over year for pension plans are largely attributable to changes in the discount rate affecting net
amortization. The decrease in net periodic benefit cost for other postretirement benefit plans in 2016 as compared with 2015 is largely attributable to changes in
retiree medical benefits approved by the Company in December 2015.

In connection with restructuring actions (see Note 4), termination charges were recorded in 2016 , 2015 and 2014 on pension and other postretirement
benefit plans related to expanded eligibility for certain employees exiting Merck. Also, in connection with these restructuring activities, curtailments were recorded
on pension and other

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postretirement benefit plans and settlements were recorded on certain U.S. and international pension plans as reflected in the table above.

Obligations
and
Funded
Status

Summarized  information  about the changes  in plan  assets  and benefit  obligations,  the funded status  and the amounts recorded  at  December  31 is as

follows:

Fair value of plan assets January 1

Actual return on plan assets

Company contributions

Effects of exchange rate changes

Benefits paid

Settlements

Assets no longer restricted to the payment of postretirement benefits (1)

Other

Fair value of plan assets December 31

Benefit obligation January 1

Service cost

Interest cost

Actuarial losses (gains) (2)

Benefits paid

Effects of exchange rate changes

Plan amendments (3)

Curtailments

Termination benefits

Settlements

Other

Benefit obligation December 31

Funded status December 31

Recognized as:

Other assets

Accrued and other current liabilities

Other noncurrent liabilities

Pension Benefits

U.S.

International

Other
Postretirement
Benefits

2016

2015

2016

2015

2016

2015

$

9,266   $

9,984   $

7,204   $

7,724   $

1,913   $

1,984

941  

63  

—  

(504)  

—  

—  

—  

(226)  

66  

—  

(523)  

(35)  

—  

—  

898  

424  

(546)  

(193)  

(21)  

—  

28  

138  

163  

(568)  

(196)  

(66)  

—  

9  

138  

68  

—  

(108)  

—  

(992)  

—  

9,766   $

9,266   $

7,794   $

7,204   $

1,019   $

9,723   $

10,632   $

7,733   $

8,331   $

1,810   $

282  

456  

854  

(504)  

—  

—  

15  

23  

—  

—  

307  

434  

(1,102)  

(523)  

—  

—  

(14)  

22  

(35)  

2  

238  

204  

938  

(193)  

(576)  

—  

(15)  

4  

(21)  

60  

251  

206  

(127)  

(196)  

(647)  

(1)  

(15)  

1  

(66)  

(4)  

54  

82  

77  

(108)  

2  

—  

1  

4  

—  

—  

10,849   $

9,723   $

8,372   $

7,733   $

1,922   $

(1,083)   $

(457)   $

(578)   $

(529)   $

(903)   $

—   $

(50)  

(1,033)  

179   $

451   $

(7)  

567   $

(7)  

(1,022)  

(1,089)  

(48)  

(588)  

—   $

(11)  

(892)  

$

$

$

$

$

(34)

63

(1)

(99)

—

—

—

1,913

2,638

80

110

(384)

(99)

(11)

(531)

(3)

7

—

3

1,810

103

359

(10)

(246)

(1)
As
a
result
of
certain
allowable
administrative
actions
that
occurred
in
June
2016,
$992
million
of
plan
assets
previously
restricted
for
the
payment
of
other
postretirement
benefits
became

available
to
fund
certain
other
health
and
welfare
benefits.

(2)
Actuarial
losses
in
2016
and
actuarial
gains
in
2015
primarily
reflect
changes
in
discount
rates.
(3)
The
decline
in
other
postretirement
benefit
obligations
in
2015
resulting
from
plan
amendments
primarily
reflects
changes
to
Merck’s
retiree
medical
benefits
approved
by
the
Company
in
December
2015.
The
changes
provide
that,
beginning
in
2017,
Merck
will
provide
access
to
retiree
health
insurance
coverage
that
supplements
government-sponsored
Medicare
through
a
private
insurance
marketplace.

At December 31, 2016 and 2015 , the accumulated benefit obligation was $18.4 billion and $16.7 billion , respectively, for all pension plans, of which

$10.5 billion and $9.4 billion , respectively, related to U.S. pension plans.

111

 
 
 
 
 
  
 
 
 
 
 
 
   
   
   
   
   
Table of Contents

Information related to the funded status of selected pension plans at December 31 is as follows:

Pension plans with a projected benefit obligation in excess of plan assets

Projected benefit obligation

Fair value of plan assets

Pension plans with an accumulated benefit obligation in excess of plan assets

Accumulated benefit obligation

Fair value of plan assets

Plan
Assets

U.S.

International

2016

2015

2016

2015

$

10,849   $

1,310   $

5,486   $

9,766  

674  

4,457  

$

9,807   $

611   $

2,692   $

9,057  

—  

1,898  

5,093

3,996

4,812

3,964

Entities are required to use a fair value hierarchy which maximizes the use of observable inputs and minimizes the use of unobservable inputs when

measuring fair value. There are three levels of inputs used to measure fair value with Level 1 having the highest priority and Level 3 having the lowest:

Level
1
 —  Quoted prices (unadjusted) in active markets for identical assets or liabilities.

Level
2
 —  Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, or other inputs that are observable or can be

corroborated by observable market data for substantially the full term of the assets or liabilities.

Level
3
 —  Unobservable inputs that are supported by little or no market activity. The Level 3 assets are those whose values are determined using pricing
models, discounted cash flow methodologies, or similar techniques with significant unobservable inputs, as well as instruments for which the determination of
fair value requires significant judgment or estimation. At December 31, 2016 and 2015 , $435 million and $423 million , respectively, or approximately 2%
and 3% , respectively, of the Company’s pension investments were categorized as Level 3 assets.

If the inputs used to measure the financial assets fall within more than one level described above, the categorization is based on the lowest level input

that is significant to the fair value measurement of the instrument.

112

 
 
 
 
 
 
 
   
   
   
 
   
   
   
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The fair values of the Company’s pension plan assets at December 31 by asset category are as follows:

Fair Value Measurements Using

Fair Value Measurements Using

Quoted Prices
In Active
Markets for
Identical Assets
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

2016

Significant
Unobservable
Inputs
(Level 3)

Total

Quoted Prices
In Active
Markets for
Identical Assets
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

2015

Significant
Unobservable
Inputs
(Level 3)

Total

$

$

$

U.S. Pension Plans

Assets

Cash and cash equivalents

Investment
funds

Developed markets equities

Emerging markets equities

Equity
securities

Developed markets

Fixed
income
securities

Government and agency obligations

Corporate obligations

Mortgage and asset-backed securities

Other investments

Net assets in fair value hierarchy

Investments measured at NAV practical

expedient (1)

Plan assets at fair value

International Pension Plans

Assets

Cash and cash equivalents

Investment
funds

Developed markets equities

Emerging markets equities

Government and agency obligations

Corporate obligations

Fixed income obligations

Real estate (2)

Equity
securities

Developed markets

Fixed
income
securities

Government and agency obligations

Corporate obligations

Mortgage and asset-backed securities

Other
investments

Insurance contracts (3)

Other

  $

2

  $

2

—   $

  $

4

—   $

—   $

—   $

521

104

2,521

—  
—  
—  
—  

—  
—  

—  

475

660

239
—  

3,148

  $

1,376

$

—  
—  

521

104

—  

2,521

—  
—  
—  

18

18

475

660

239

18

5,224

9,766

  $

566

87

2,444

—  
—  
—  
—  

—  
—  

—  

391

679

236
—  

$

4,542

$

3,097

$

1,306

$

42

  $

11

  $

—   $

53

  $

63

  $

  $

4

—   $

67

187

24

123

2

6
—  

565

2
—  
—  

—  

1

2,846

148

1,904

282

3

3

—  

235

92

50

59

4

—  
—  
—  
—  
—  

4

—  

—  
—  
—  

412

1

3,033

172

2,027

284

9

7

565

237

92

50

471

6

184

21

305

173

8
—  

496

2
—  
—  

—  
—  

2,738

137

1,115

103

3

3

—  

465

161

68

57

3

—

566

87

—  
—  

—  

2,444

—  
—  
—  

23

23

391

679

236

23

$

4,426

4,840

9,266

  $

—  
—  
—  
—  
—  

5

—  

—  
—  
—  

393

2

400

  $

  $

2,922

158

1,420

276

11

8

496

467

161

68

450

5

6,509

695

7,204

Net assets in fair value hierarchy

$

952

  $

5,637

  $

417

  $

7,006

  $

1,252

  $

4,857

  $

Investments measured at NAV practical

expedient (1)

Plan assets at fair value

788

7,794

  $

(1)

Certain
investments
that
were
measured
at
net
asset
value
(NAV)
per
share
or
its
equivalent
have
not
been
classified
in
the
fair
value
hierarchy.
The
fair
value
amounts
presented
in
this
table
are
intended
to
permit
reconciliation
of
the
fair
value
hierarchy
to
the
fair
value
of
plan
assets
at
December
31,
2016
and
2015.

(2)

The
plans’
Level
3
investments
in
real
estate
funds
are
generally
valued
by
market
appraisals
of
the
underlying
investments
in
the
funds.
(3)

The
plans’
Level
3
investments
in
insurance
contracts
are
generally
valued
using
a
crediting
rate
that
approximates
market
returns
and
invest
in
underlying
securities
whose
market
values
are
unobservable
and
determined
using
pricing
models,
discounted
cash
flow
methodologies,
or
similar
techniques.

113

 
 
  
 
 
 
 
 
 
 
   
     
 
     
 
   
   
   
   
   
   
   
   
     
     
     
     
     
     
     
 
   
   
   
   
   
   
   
 
 
 
 
 
 
 
   
   
   
   
   
   
   
 
 
 
 
   
   
   
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
   
   
   
 
 
   
   
   
   
   
 
   
   
   
   
   
   
   
   
     
     
     
     
     
     
     
 
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
   
   
   
 
 
 
 
 
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
   
   
   
 
 
   
   
   
   
   




Table of Contents

The table below provides a summary of the changes in fair value, including transfers in and/or out, of all financial assets measured at fair value using

significant unobservable inputs (Level 3) for the Company’s pension plan assets:

U.S. Pension Plans

Balance January 1

Actual return on plan assets:

Relating to assets still held at December 31

Relating to assets sold during the year

Purchases and sales, net

Balance December 31

International Pension Plans

Balance January 1

Actual return on plan assets:

Relating to assets still held at December 31

Purchases and sales, net

Transfers into Level 3

Balance December 31

$

$

$

$

2016

2015

Insurance
Contracts

Real
Estate

Other

Total

Insurance
Contracts

Real
Estate

Other

Total

—   $

—   $

23

  $

23   $

—   $

—   $

28   $

—  
—  
—  
— $

393

  $

(9)

2

26

412

$

5

1

(2)
—  
4

$

—  
—  
—  
— $

(3)

4

(6)

18

$

(3)  
4  
(6)  
18

$

—  
—  
—  
— $

—  
—  
—  
— $

(3)  
5  
(7)  
23

$

  $

2

  $

400   $

394

  $

23   $

2   $

419

—  

(1)
—  
1

$

(8)  
(1)  
26  
417

(28)

2

25

$

393

$

(2)  
(16)  
—  
5

$

—  
—  
—  
2

$

(30)

(14)

25

400

The fair values of the Company’s other postretirement benefit plan assets at December 31 by asset category are as follows:

Fair Value Measurements Using

Fair Value Measurements Using

Quoted Prices
In Active
Markets for
Identical Assets
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

2016

Significant
Unobservable
Inputs
(Level 3)

Total

Quoted Prices
In Active
Markets for
Identical Assets
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

2015

Significant
Unobservable
Inputs
(Level 3)

Total

$

125

  $

—   $

—   $

125

  $

65

  $

—   $

—   $

48

10

1

231

—  
—  

—  

—  
—  

—  

—  

43

60

22

—  
—  

—  

—  

—  
—  

—  
—   $

48

10

1

231

43

60

22

53

29

2

229

—  
—  

—  

540

  $

378

  $

479

1,019

  $

—  
—  

—  

—  

339

311

218

868

  $

—  
—  

—  

—  

—  
—  

—  
—   $

  $

Net assets in fair value hierarchy

$

415

  $

125

  $

Investments measured at NAV
practical expedient (1)

Plan assets at fair value

(1)

Certain
investments
that
were
measured
at
net
asset
value
(NAV)
per
share
or
its
equivalent
have
not
been
classified
in
the
fair
value
hierarchy.
The
fair
value
amounts
presented
in
this
table
are
intended
to
permit
reconciliation
of
the
fair
value
hierarchy
to
the
fair
value
of
plan
assets
at
December
31,
2016
and
2015.

The Company has established investment guidelines for its U.S. pension and other postretirement plans to create an asset allocation that is expected to

deliver a rate of return sufficient to meet the long-term obligation of each

114

Assets

Cash and cash equivalents

Investment
funds

Developed markets equities

Emerging markets equities

Government and agency

obligations

Equity
securities

Developed markets

Fixed
income
securities

Government and agency

obligations

Corporate obligations

Mortgage and asset-backed

securities

28

(3)

5

(7)

23

65

53

29

2

229

339

311

218

1,246

667

1,913

 
 
  
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
 
 
 
 
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
  
    
 
    
 
   
   
   
   
   
   
   
 
   
   
   
   
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
 
 
 
 
   
   
   
   
   
   
   
 
 
 
 
 
 
 
 
 
 
   
   
 
   
   
   
 
 
   
   
   
   
   


Table of Contents

plan, given an acceptable level of risk. The target investment portfolio of the Company’s U.S. pension and other postretirement benefit plans is allocated 40% to
60% in U.S. equities, 20% to 40% in international equities, 15% to 25% in fixed-income investments, and up to 5% in cash and other investments. The portfolio’s
equity weighting is consistent with the long-term nature of the plans’ benefit obligations. The expected annual standard deviation of returns of the target portfolio,
which  approximates  13%  ,  reflects  both  the  equity  allocation  and  the  diversification  benefits  among  the  asset  classes  in  which  the  portfolio  invests.  For
international  pension  plans,  the  targeted  investment  portfolio  varies  based  on  the  duration  of  pension  liabilities  and  local  government  rules  and  regulations.
Although a significant percentage of plan assets are invested in U.S. equities, concentration risk is mitigated through the use of strategies that are diversified within
management guidelines.

Expected
Contributions

Expected contributions during 2017 are approximately $50 million for U.S. pension plans, approximately $160 million for international pension plans

and approximately $25 million for other postretirement benefit plans.

Expected
Benefit
Payments

Expected benefit payments are as follows:

2017

2018

2019

2020

2021

2022 — 2026

U.S. Pension Benefits  

International Pension
Benefits

$

561   $

186   $

Other
Postretirement
Benefits

588  

629  

638  

655  

3,596  

179  

195  

202  

201  

1,168  

101

104

106

111

115

641

Expected benefit payments are based on the same assumptions used to measure the benefit obligations and include estimated future employee service.

Amounts
Recognized
in
Other
Comprehensive
Income

Net  loss  amounts  reflect  experience  differentials  primarily  relating  to  differences  between  expected  and  actual  returns  on  plan  assets  as  well  as  the
effects of changes in actuarial assumptions. Net loss amounts in excess of certain thresholds are amortized into net periodic benefit cost over the average remaining
service life of employees. The following amounts were reflected as components of OCI
:

Years
Ended
December
31

2016

U.S.

2015

Pension Plans

International

Other Postretirement
Benefit Plans

2014

2016

2015

2014

2016

2015

2014

Net (loss) gain arising during the period
Prior service (cost) credit arising during the period

Net loss amortization included in benefit cost
Prior service (credit) cost amortization included in

benefit cost

$

$

$

$

(743)

  $

73

  $

(2,085)

  $

(380)

  $

(66)

  $

  $

  $

(10)

(753)

119

(55)

  $

  $

(13)

60

214

(56)

(59)

(2,144)

135

(61)

  $

  $

  $

  $

(2)

(382)

87

(11)

  $

  $

(4)

(70)

118

(14)

64

  $

158

  $

74

  $

76

  $

104

  $

(779)   $
(8)  
(787)   $

74   $

(15)  
59   $

(45)   $
(19)  
(64)   $

3   $

(106)  
(103)   $

209   $
511  
720   $

5   $

(64)  
(59)   $

(223)

(42)

(265)

1

(72)

(71)

The estimated net loss (gain) and prior service cost (credit) amounts that will be amortized from AOCI
into net periodic benefit cost during 2017 are
$270 million and $(64) million ,  respectively,  for  pension  plans  (of  which  $178 million and $(53) million ,  respectively,  relates  to  U.S.  pension  plans)  and  $1
million and $(99) million , respectively, for other postretirement benefit plans.

115

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Actuarial
Assumptions

The Company reassesses its benefit plan assumptions on a regular basis. The weighted average assumptions used in determining U.S. pension and other

postretirement benefit plan and international pension plan information are as follows:

December
31

Net periodic benefit cost

Discount rate

Expected rate of return on plan assets

Salary growth rate

Benefit obligation

Discount rate

Salary growth rate

U.S. Pension and Other
Postretirement Benefit Plans

International Pension Plans

2016

2015

2014

2016

2015

2014

4.70%  

8.60%  

4.30%  

4.30%  

4.30%  

4.20%  

8.50%  

4.40%  

4.80%  

4.30%  

4.90%  

8.50%  

4.50%  

4.20%  

4.40%  

2.80%  

5.60%  

2.90%  

2.20%  

2.90%  

2.70%  

5.70%  

2.90%  

2.80%  

2.90%  

3.80%

6.00%

3.10%

2.70%

2.90%

For both the pension and other postretirement benefit plans, the discount rate is evaluated on measurement dates and modified to reflect the prevailing
market rate of a portfolio of high-quality fixed-income debt instruments that would provide the future cash flows needed to pay the benefits included in the benefit
obligation  as they come due. The expected  rate  of return for both the pension and other  postretirement  benefit  plans represents  the average  rate  of return to be
earned on plan assets over the period the benefits included in the benefit obligation are to be paid and is determined on a plan basis. In developing the expected rate
of return within each plan, long-term historical returns data are considered as well as actual returns on the plan assets and other capital markets experience. Using
this  reference  information,  the  long-term  return  expectations  for  each  asset  category  and  a  weighted  average  expected  return  for  each  plan’s  target  portfolio  is
developed, according to the allocation among those investment categories. The expected portfolio performance reflects the contribution of active management as
appropriate. For 2017 , the expected rate of return for the Company’s U.S. pension and other postretirement benefit plans will range from  8.00% to 8.75% , as
compared to a range of 7.30% to 8.75% in 2016 .

The health care cost trend rate assumptions for other postretirement benefit plans are as follows:

December
31

Health care cost trend rate assumed for next year

Rate to which the cost trend rate is assumed to decline

Year that the trend rate reaches the ultimate trend rate

A one percentage point change in the health care cost trend rate would have had the following effects:

Effect on total service and interest cost components

Effect on benefit obligation

Savings
Plans

2016

2015

7.4%  

4.5%  

2032

6.8%

4.5%

2027

One Percentage Point

Increase

Decrease

$

12   $

138  

(12)

(114)

The  Company  also  maintains  defined  contribution  savings  plans  in  the  United  States.  The  Company  matches  a  percentage  of  each  employee’s
contributions consistent with the provisions of the plan for which the employee is eligible. Total employer contributions to these plans in 2016 , 2015 and 2014
were $126 million , $125 million and $124 million , respectively.

116

 
 
 
 
 
 
 
 
   
   
   
   
   
 
   
   
   
   
   
 
 
 
   
 
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14.    Other (Income) Expense, Net

Other (income) expense, net, consisted of:

Years
Ended
December
31

Interest income

Interest expense

Exchange losses

Equity income from affiliates

Other, net

2016

2015

2014

$

(328)   $

(289)   $

(266)

693  

174  

(86)  

267  

672  

1,277  

(205)  

732

180

(257)

72  

(12,002)

$

720   $

1,527   $

(11,613)

The higher exchange losses in 2015 as compared with 2016 and 2014 were related primarily to the Venezuelan Bolívar. During the second quarter of
2015, upon evaluation of evolving economic conditions in Venezuela and volatility in the country, combined with a decline in transactions that were settled at the
then official (CENCOEX) rate of 6.30 VEF (Bolívar Fuertes) per U.S. dollar, the Company determined it was unlikely that all outstanding net monetary assets
would  be  settled  at  the  CENCOEX  rate.  Accordingly,  during  the  second  quarter  of  2015,  the  Company  recorded  a  charge  of  $715  million  to  devalue  its  net
monetary assets in Venezuela to an amount that represented the Company’s estimate of the U.S. dollar amount that would ultimately be collected. During the third
quarter of 2015, the Company recorded additional exchange losses of $138 million in the aggregate reflecting the ongoing effect of translating transactions and net
monetary assets consistent with the second quarter. In the fourth quarter of 2015, as a result of the further deterioration of economic conditions in Venezuela, and
continued  declines  in  transactions  which  were  settled  at  the  official  rate,  the  Company  began  using  the  SIMADI  rate  to  report  its  Venezuelan  operations.  The
Company also revalued its remaining net monetary assets at the SIMADI rate (subsequently replaced with the DICOM rate), which resulted in an additional charge
in the fourth quarter of 2015 of $161 million . Since January 2010, Venezuela has been designated hyperinflationary and, as a result, local foreign operations are
remeasured in U.S. dollars with the impact recorded in results of operations.

The  decline  in  equity  income  from  affiliates  in  2016  as  compared  with  2015  was  driven  primarily  by  lower  equity  income  from  certain  research

investment funds.

Other, net (as presented in the table above) in 2016 includes a charge of $625 million to settle worldwide patent litigation related to Keytruda
(see Note
10), a gain of $117 million related to the settlement of other patent litigation (see Note 10), gains of $100 million resulting from the receipt of milestone payments
for out-licensed migraine clinical development programs (see Note 3) and $98 million of income related to AstraZeneca’s option exercise (see Note 8).

Other, net in 2015 includes a $680 million net charge related to the settlement of Vioxx
shareholder class action litigation (see Note 10) and an expense
of $78 million for a contribution of investments in equity securities to the Merck Foundation, partially offset by a $250 million gain on the sale of certain migraine
clinical development programs (see Note 3), a $147 million gain on the divestiture of Merck’s remaining ophthalmics business in international markets (see Note
3), and the recognition of $182 million of deferred income related to AstraZeneca’s option exercise.

Other,  net  in  2014  includes  an  $11.2  billion  gain  on  the  divestiture  of  MCC  (see  Note  3),  a  gain  of  $741  million  related  to  AstraZeneca’s  option
exercise, a $480 million gain on the divestiture of certain ophthalmic products in several international markets (see Note 3), a gain of $204 million related to the
sale of Sirna (see Note 3) and the recognition of $140 million of deferred income related to AstraZeneca’s option exercise, partially offset by a $628 million loss on
extinguishment of debt (see Note 9) and a $93 million goodwill impairment charge related to the Company’s joint venture with Supera.

Interest paid was $686 million in 2016 , $653 million in 2015 and $852 million in 2014 .

117

 
 
 
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15.    Taxes on Income

A reconciliation between the effective tax rate and the U.S. statutory rate is as follows:

U.S. statutory rate applied to income before taxes

$

1,631  

35.0 %   $

1,890  

35.0 %   $

6,049  

35.0 %

2016

2015

2014

Amount

Tax Rate

  Amount

Tax Rate

Amount

Tax Rate

Differential arising from:

Foreign earnings

Unremitted foreign earnings

Tax settlements

AstraZeneca option exercise

Sale of Sirna Therapeutics, Inc.

Impact of purchase accounting adjustments, including

amortization

Foreign currency devaluation related to Venezuela

State taxes

Restructuring

U.S. health care reform legislation

Divestiture of Merck Consumer Care
Other (1)

(1,593)  

(30)  

—  

—  

—  

623  

—  

173  

145  

68  

—  

(299)  

718  

$

(34.2)

(0.6)

—  

—  

—  

13.4

—  

3.7

3.1

1.4

—  

(6.4)

15.4 %   $

(2,105)  

260  

(417)  

—  

—  

797  

321  

159  

167  

66  

—  

(196)  

942  

(39.0)

4.8

(7.7)

—  

—  

14.8

5.9

2.9

3.1

1.2

—  

(3.6)

(1,367)  

(209)  

(89)  

(774)  

(357)  

1,013  

—  

7  

289  

134  

440  

213  

(7.9)

(1.2)

(0.5)

(4.5)

(2.1)

5.9

—

—

1.7

0.8

2.5

1.2

17.4 %   $

5,349  

30.9 %

(1)

Other
includes
the
tax
effect
of
contingency
reserves,
research
credits,
and
miscellaneous
items.

The foreign earnings tax rate differentials in the tax rate reconciliation above primarily reflect the impacts of operations in jurisdictions with different
tax rates than the United States, particularly Ireland and Switzerland, as well as Singapore and Puerto Rico which operate under tax incentive grants, where the
earnings have been indefinitely reinvested, thereby yielding a favorable impact on the effective tax rate as compared with the 35.0% U.S. statutory rate. The foreign
earnings tax rate differentials do not include the impact of intangible asset impairment charges, amortization of purchase accounting adjustments or restructuring
costs. These items are presented separately as they each represent a significant, separately disclosed pretax cost or charge, and a substantial portion of each of these
items relates to jurisdictions with lower tax rates than the United States. Therefore, the impact of recording these expense items in lower tax rate jurisdictions is an
unfavorable impact on the effective tax rate as compared to the 35.0% U.S. statutory rate.

The Company’s 2015 effective tax rate reflects the impact of the Protecting Americans From Tax Hikes Act, which was signed into law on December
18, 2015, extending the research credit permanently and the controlled foreign corporation look-through provisions for five years. The Company’s 2014 effective
tax rate reflects the impact of the Tax Increase Prevention Act, which was signed into law on December 19, 2014, extending the research credit and the controlled
foreign corporation look-through provisions for one year only.

Income before taxes consisted of:

Years
Ended
December
31

Domestic

Foreign

2016

2015

2014

$

$

518   $

2,247   $

15,730

4,141  

3,154  

1,553

4,659   $

5,401   $

17,283

118

 
 
 
   
 
 
 
 
 
   
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Taxes on income consisted of:

Years
Ended
December
31

Current
provision

Federal

Foreign

State

Deferred
provision

Federal

Foreign

State

2016

2015

2014

$

1,166   $

732   $

7,136

916  

157  

844  

130  

438

375

2,239  

1,706  

7,949

(1,255)  

(225)  

(41)  

(1,521)  

(552)  

(163)  

(49)  

(764)  

(2,162)

(201)

(237)

(2,600)

$

718   $

942   $

5,349

Deferred income taxes at December 31 consisted of:

Intangibles

Inventory related

Accelerated depreciation

Unremitted foreign earnings

Pensions and other postretirement benefits

Compensation related

Unrecognized tax benefits

Net operating losses and other tax credit carryforwards

Other

Subtotal

Valuation allowance

Total deferred taxes

Net deferred income taxes

Recognized as:

Other assets

Deferred income taxes

2016

2015

Assets

Liabilities

Assets

Liabilities

$

86   $

3,734   $

—   $

30  

28  

—  

727  

438  

383  

437  

1,128  

3,257  
(268)    
2,989   $

  $

546    

  $

660  

927  

2,044  

109  

—  

—  

—  

46  

7,520  

7,520   $

4,531    

  $
5,077    

49  

43  

—  

435  

535  

412  

565  

1,217  

3,256  
(304)    
2,952   $

  $

608    

  $

$

$

4,962

752

910

2,124

131

—

—

—

—

8,879

8,879

5,927

6,535

The Company has net operating loss (NOL) carryforwards in several jurisdictions. As of December 31, 2016 , $243 million of deferred taxes on NOL
carryforwards  relate  to  foreign  jurisdictions,  none  of  which  are  individually  significant.  Valuation  allowances  of  $268  million  have  been  established  on  these
foreign NOL carryforwards  and other foreign deferred tax assets. In addition, the Company has  $194 million of deferred  tax assets relating  to various U.S. tax
credit carryforwards and NOL carryforwards, all of which are expected to be fully utilized prior to expiry.

Income  taxes  paid  in  2016  ,  2015  and  2014  were  $1.8  billion  ,  $1.8  billion  and  $7.9  billion  ,  respectively.  Income  taxes  paid  in  2014  reflects
approximately $5.0 billion of taxes paid on the divestiture of MCC. Tax benefits relating to stock option exercises were $147 million in 2016 , $109 million in
2015 and $202 million in 2014 .

119

 
 
 
   
   
 
 
   
   
 
 
 
 
   
 
 
 
 
 
 
   
   
   
 
Table of Contents

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:

Balance January 1

Additions related to current year positions

Additions related to prior year positions
Reductions for tax positions of prior years (1)


Settlements 
(1)

Lapse of statute of limitations

Balance December 31

(1)

Amounts
reflect
the
settlements
with
the
IRS
as
discussed
below.

2016

2015

2014

$

3,448   $

3,534   $

3,503

196  

75  

(90)  

(92)  

(43)  

198  

53  

(59)  

(184)  

(94)  

389

23

(156)

(161)

(64)

$

3,494   $

3,448   $

3,534

If  the  Company  were  to  recognize  the  unrecognized  tax  benefits  of  $3.5  billion  at December  31,  2016  ,  the  income  tax  provision  would  reflect  a

favorable net impact of $3.3 billion .

The Company is under examination by numerous tax authorities in various jurisdictions globally. The Company believes that it is reasonably possible
that the total amount of unrecognized tax benefits as of December 31, 2016 could decrease by up to $1.7 billion in the next 12 months as a result of various audit
closures, settlements or the expiration of the statute of limitations. The ultimate finalization of the Company’s examinations with relevant taxing authorities can
include  formal  administrative  and  legal  proceedings,  which  could  have  a  significant  impact  on  the  timing  of  the  reversal  of  unrecognized  tax  benefits.  The
Company believes that its reserves for uncertain tax positions are adequate to cover existing risks or exposures. However, there is one item that is currently under
discussion  with  the  Internal  Revenue  Service  (IRS)  relating  to  the  2006  through  2008  examination.  The  Company  has  concluded  that  its  position  should  be
sustained  upon audit.  However,  if  this  item  were  to  result  in  an  unfavorable  outcome  or  settlement,  it  could  have  a  material  adverse  impact  on the  Company’s
financial position, liquidity and results of operations.

Expenses for interest and penalties associated with uncertain tax positions amounted to $134 million in 2016 , $102 million in 2015 and $9 million in
2014 . These amounts reflect the beneficial impacts of various tax settlements, including those discussed below. Liabilities for accrued interest and penalties were
$886 million and $766 million as of December 31, 2016 and 2015 , respectively.

The IRS is currently conducting examinations of the Company’s tax returns for the years 2006 through 2008, as well as 2010 and 2011. Although the
IRS’s examination of the Company’s 2002-2005 federal tax returns was concluded prior to 2015, one issue relating to a refund claim remained open. During 2015,
this issue was resolved and the Company received a refund of approximately $715 million , which exceeded the receivable previously recorded by the Company,
resulting in a tax benefit of $410 million .

In addition, various state and foreign tax examinations are in progress. For most of its other significant tax jurisdictions (both U.S. state and foreign),

the Company’s income tax returns are open for examination for the period 2003 through 2016.

At December  31,  2016  ,  foreign  earnings  of  $63.1  billion  have  been  retained  indefinitely  by  subsidiary  companies  for  reinvestment;  therefore,  no
provision has been made for income taxes that would be payable upon the distribution of such earnings and it would not be practicable to determine the amount of
the related unrecognized deferred income tax liability. In addition, the Company has subsidiaries operating in Puerto Rico and Singapore under tax incentive grants
that begin to expire in 2022.

120

 
 
 
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16.    Earnings per Share

The calculations of earnings per share (shares in millions) are as follows:

Years
Ended
December
31

Net income attributable to Merck & Co., Inc.

Average common shares outstanding
Common shares issuable (1)

Average common shares outstanding assuming dilution

Basic earnings per common share attributable to Merck & Co., Inc. common shareholders

Earnings per common share assuming dilution attributable to Merck & Co., Inc. common shareholders

(1)

Issuable
primarily
under
share-based
compensation
plans.

2016

2015

2014

$

3,920   $

4,442   $

11,920

2,766  

21  

2,787  

2,816  

25  

2,841  

$

$

1.42   $

1.41   $

1.58   $

1.56   $

2,894

34

2,928

4.12

4.07

In 2016 , 2015 and 2014 , 13 million , 9 million and 4 million , respectively, of common shares issuable under share-based compensation plans were

excluded from the computation of earnings per common share assuming dilution because the effect would have been antidilutive.

17.   Other Comprehensive Income (Loss)

Changes in AOCI
by component are as follows:

Balance January 1, 2014, net of taxes

$

Other comprehensive income (loss) before reclassification
adjustments, pretax
Tax

Other comprehensive income (loss) before reclassification
adjustments, net of taxes

Reclassification adjustments, pretax

Tax

Reclassification adjustments, net of taxes

Other comprehensive income (loss), net of taxes

Balance December 31, 2014, net of taxes

Other comprehensive income (loss) before reclassification
adjustments, pretax
Tax

Other comprehensive income (loss) before reclassification
adjustments, net of taxes

Reclassification adjustments, pretax

Tax

Reclassification adjustments, net of taxes

Other comprehensive income (loss), net of taxes

Balance December 31, 2015, net of taxes

Other comprehensive income (loss) before reclassification
adjustments, pretax
Tax

Other comprehensive income (loss) before reclassification
adjustments, net of taxes

Reclassification adjustments, pretax

Tax

Reclassification adjustments, net of taxes

Other comprehensive income (loss), net of taxes

Balance December 31, 2016, net of taxes

$

Derivatives

Investments

Employee
Benefit
Plans

Cumulative
Translation
Adjustment

Accumulated Other
Comprehensive
Income (Loss)

$

132

778

(285)

493

(146)

(1)



51

(95)

398

530

526

(177)

349

(731)

(1)



256

(475)

(126)

404

210

(72)

138

(314)

(1)  

110

(204)

(66)

338

$

54

48

(17)

31

43

(17)

26

57

111

(9)

(13)

(22)

(73)

25

(48)

(70)

41

(38)

16

(22)

(31)

9

(22)

(44)

(3)

(2)



(2)



(2)  

$

(909)  

$

(1,474)  

$

(3,196)  
1,067  

(2,129)  

62 (3)


(10)  
52  
(2,077)  
(2,986)  

710  
(272)  

438  

203 (3)


(62)  
141  
579  

(2,407) (4)



(1,199)  
363  

(836)  

37 (3)  
—  
37  
(799)  

$

(3,206) (4)  

$

(412)  
(92)  

(504)  
—  
—  
—  
(504)  
(1,978)  

(158)  
(28)  

(186)  
(22)  
—  
(22)  
(208)  
(2,186)  

(150)  
(19)  

(169)  
—  
—  
—  
(169)  
(2,355)  

$

(2,197)

(2,782)

673

(2,109)

(41)

24

(17)

(2,126)

(4,323)

1,069

(490)

579

(623)

219

(404)

175

(4,148)

(1,177)

288

(889)

(308)

119

(189)

(1,078)

(5,226)

(1)

Relates
to
foreign
currency
cash
flow
hedges
that
were
reclassified
from
AOCI to
Sales .
(2)

Represents
net
realized
(gains)
losses
on
the
sales
of
available-for-sale
investments
that
were
reclassified
from
AOCI to
Other (income) expense, net .
(3)

Includes
net
amortization
of
prior
service
cost
and
actuarial
gains
and
losses
included
in
net
periodic
benefit
cost
(see
Note
13).
(4)

Includes
pension
plan
net
loss
of
$
3.9
billion
and
$3.3
billion
at
December
31,
2016
and
2015
,
respectively,
and
other
postretirement
benefit
plan
net
loss
of
$115
million
and
$86
million
at
December
31,
2016
and
in
2015
,
respectively,
as
well
as
pension
plan
prior
service
credit
of
$361
million
and
$414
million
at
December
31,
2016
and
2015
,
respectively,
and
other
postretirement
benefit
plan
prior
service
credit
of
$466
million
and
$547
million
at
December
31,
2016
and
2015
,
respectively.

121

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 


Table of Contents

18.    Segment Reporting

The  Company’s  operations  are  principally  managed  on  a  products  basis  and  are  comprised  of  four  operating  segments  –  Pharmaceutical,  Animal

Health, Healthcare Services and Alliances. The Animal Health, Healthcare Services and Alliances segments are not material for separate reporting.

The Pharmaceutical segment includes human health pharmaceutical and vaccine products. Human health pharmaceutical products consist of therapeutic
and  preventive  agents,  generally  sold  by  prescription,  for  the  treatment  of  human  disorders.  The  Company  sells  these  human  health  pharmaceutical  products
primarily to drug wholesalers and retailers, hospitals, government agencies and managed health care providers such as health maintenance organizations, pharmacy
benefit  managers  and  other  institutions.  Vaccine  products  consist  of  preventive  pediatric,  adolescent  and  adult  vaccines,  primarily  administered  at  physician
offices. The Company sells these human health vaccines primarily to physicians, wholesalers, physician distributors and government entities. A large component of
pediatric and adolescent vaccine sales are made to the U.S. Centers for Disease Control and Prevention Vaccines for Children program, which is funded by the
U.S.  government.  Additionally,  the  Company  sells  vaccines  to  the  Federal  government  for  placement  into  vaccine  stockpiles.  Sales  of  vaccines  in  most  major
European markets were marketed through the Company’s SPMSD joint venture until its termination on December 31, 2016 (see Note 8).

The Company also has animal health operations that discover, develop, manufacture and market animal health products, including vaccines, which the
Company sells to veterinarians, distributors and animal producers. During 2016, the Company made changes to the composition of the Animal Health segment that
resulted in the inclusion of certain revenues and costs that were previously included in non-segment revenues and profits. Prior periods have been recast to reflect
these changes on a comparable basis. The Company’s Healthcare Services segment provides services and solutions that focus on engagement, health analytics and
clinical services to improve the value of care delivered to patients. Merck’s Alliances segment primarily includes results from the Company’s relationship with
AZLP  until  the  termination  of  that  relationship  on  June  30,  2014  (see  Note  8).  On  October  1,  2014,  the  Company  divested  its  Consumer  Care  segment  that
developed, manufactured and marketed over-the-counter, foot care and sun care products (see Note 3).

122

Table of Contents

Sales of the Company’s products were as follows:

Years
Ended
December
31

Primary Care and Women’s Health

Cardiovascular

Zetia

Vytorin

Diabetes

Januvia

Janumet

General Medicine and Women’s Health

NuvaRing

Implanon/Nexplanon

Dulera

Follistim
AQ

Hospital and Specialty

Hepatitis

Zepatier

HIV

Isentress

Hospital Acute Care

Cubicin
(1)

Noxafil

Invanz

Cancidas

Bridion

Primaxin

Immunology

Remicade

Simponi

Oncology

Keytruda

Emend

Temodar

Diversified Brands

Respiratory

Singulair

Nasonex

Other

Cozaar/Hyzaar

Arcoxia

Fosamax

Zocor

Vaccines   (2)

Gardasil/Gardasil
9

ProQuad/M-M-R
II/Varivax

Zostavax

RotaTeq

Pneumovax
23

Other pharmaceutical (3)

Total Pharmaceutical segment sales

Other segment sales (4)

Total segment sales

Other (5)

$

2016

2015

2014

  $

2,560

1,141

3,908

2,201

777

606

436

355

555

1,387

1,087

595

561

558

482

297

1,268

766

1,402

549

283

915

537

511

450

284

186

2,173

1,640

685

652

641

4,703

35,151

3,862

39,013

794

  $

2,526

1,251

3,863

2,151

732

588

536

383

—  

1,511

1,127

487

569

573

353

313

1,794

690

566

535

312

931

858

667

471

359

217

1,908

1,505

749

610

542

5,105

34,782

3,667

38,449

1,049

2,650

1,516

3,931

2,071

723

502

460

412

—

1,673

25

402

529

681

340

329

2,372

689

55

553

350

1,092

1,099

806

519

470

258

1,738

1,394

765

659

746

6,233

36,042

5,758

41,800

437

 
 
 
   
   
 
   
   
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
   
   
 
   
   
 
 
   
   
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
 
 
   
   
 
   
   
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(1)

Sales
of
Cubicin in
2015
represent
sales
subsequent
to
the
Cubist
acquisition
date.
Sales
of
Cubicin in
2014
reflect
sales
in
Japan
pursuant
to
a
previously
existing
licensing
agreement.
(2)

These
amounts
do
not
reflect
sales
of
vaccines
sold
in
most
major
European
markets
through
the
Company’s
joint
venture,
SPMSD,
the
results
of
which
are
reflected
in
equity
income
from
affiliates
which
is
included
in
Other (income) expense, net .
These
amounts
do,
however,
reflect
supply
sales
to
SPMSD.
On
December
31,
2016,
Merck
and
Sanofi
terminated
the
SPMSD
joint
venture
(see
Note
8).

(3)

Other
pharmaceutical
primarily
reflects
sales
of
other
human
health
pharmaceutical
products,
including
products
within
the
franchises
not
listed
separately.
(4)

Represents
the
non-reportable
segments
of
Animal
Health,
Healthcare
Services
and
Alliances,
as
well
as
Consumer
Care
until
its
divestiture
on
October
1,
2014
(see
Note
3).
The
Alliances
segment
includes
revenue
from
the
Company’s
relationship
with
AZLP
until
termination
on
June
30,
2014
(see
Note
8).

(5)

Other
is
primarily
comprised
of
miscellaneous
corporate
revenues,
including
revenue
hedging
activities,
as
well
as
third-party
manufacturing
sales.
Other
in
2016
and
2014
also
includes
approximately
$170
million
and
$232
million
,
respectively,
in
connection
with
the
sale
of
the
marketing
rights
to
certain
products.

$

39,807

  $

39,498

  $

42,237

123

 






Table of Contents

Consolidated revenues by geographic area where derived are as follows:

Years
Ended
December
31

United States

Europe, Middle East and Africa

Asia Pacific

Japan

Latin America

Other

A reconciliation of total segment profits to consolidated Income
before
taxes
is as follows:

Years
Ended
December
31

Segment profits:

Pharmaceutical segment

Other segments

Total segment profits

Other profits

Unallocated:

Interest income

Interest expense

Equity income from affiliates

Depreciation and amortization

Research and development

Amortization of purchase accounting adjustments

Restructuring costs

Gain on sale of certain migraine clinical development programs

Charge related to the settlement of worldwide Keytruda
 patent litigation

Gain on divestiture of certain ophthalmic products

Foreign currency devaluation related to Venezuela

Net charge related to the settlement of Vioxx
 shareholder class action litigation

Gain on divestiture of Merck Consumer Care

Gain on AstraZeneca option exercise

Loss on extinguishment of debt

Other unallocated, net

2016

2015

2014

$

18,478   $

17,519   $

10,953  

10,677  

3,918  

2,846  

2,155  

1,457  

3,825  

2,673  

2,825  

1,979  

17,071

13,174

3,952

3,471

3,151

1,418

$

39,807   $

39,498   $

42,237

2016

2015

2014

$

22,180   $

21,658   $

22,164

1,507  

1,573  

23,687  

23,231  

481  

810  

328  

(693)  

(19)  

(1,585)  

(9,084)  

(3,692)  

(651)  

100  

(625)  

—  

—  

—  

—  

—  

—  

289  

(672)  

135  

(1,573)  

(5,871)  

(4,816)  

(619)  

250  

—  

147  

(876)  

(680)  

—  

—  

—  

2,386

24,550

627

266

(732)

59

(2,452)

(5,823)

(4,182)

(1,013)

—

—

480

—

—

11,209

741

(628)

(3,588)  

(4,354)  

(5,819)

$

4,659   $

5,401   $

17,283

Segment  profits  are  comprised  of  segment  sales  less  standard  costs  and  certain  operating  expenses  directly  incurred  by  the  segments.  For  internal
management  reporting  presented  to  the  chief  operating  decision  maker,  Merck  does  not  allocate  materials  and  production  costs,  other  than  standard  costs,  the
majority  of  research  and  development  expenses  or  general  and  administrative  expenses,  nor  the  cost  of  financing  these  activities.  Separate  divisions  maintain
responsibility  for  monitoring  and  managing  these  costs,  including  depreciation  related  to  fixed  assets  utilized  by  these  divisions  and,  therefore,  they  are  not
included in segment profits. In addition, costs related to restructuring activities, as well as the amortization of purchase accounting adjustments are not allocated to
segments.

Other profits are primarily comprised of miscellaneous corporate profits, as well as operating profits related to third-party manufacturing sales.

Other unallocated, net includes expenses from corporate and manufacturing cost centers, goodwill and other intangible asset impairment charges, gains
or losses on sales of businesses, expense or income related to changes in the estimated fair value of contingent consideration, and other miscellaneous income or
expense items.

124

 
 
 
 
 
 
   
   
 
   
   
 
Table of Contents

Equity income from affiliates and depreciation and amortization included in segment profits is as follows:

Pharmaceutical

All Other

Total

Year Ended December 31, 2016

Included in segment profits:

Equity income from affiliates

Depreciation and amortization

Year
Ended
December
31,
2015

Included in segment profits:

Equity income from affiliates

Depreciation and amortization

Year
Ended
December
31,
2014

Included in segment profits:

Equity income from affiliates

Depreciation and amortization

Property, plant and equipment, net by geographic area where located is as follows:

December
31

United States

Europe, Middle East and Africa

Asia Pacific

Latin America

Japan

Other

$

$

$

105

  $

(160)

—   $

(23)  

70

  $

(82)

—   $

(18)  

90

  $

(39)

108   $

(18)  

105

(183)

70

(100)

198

(57)

2016

2015

2014

$

8,114   $

8,467   $

2,732  

2,844  

775  

234  

164  

7  

842  

182  

164  

8  

8,727

3,120

897

207

172

13

$

12,026   $

12,507   $

13,136

The Company does not disaggregate assets on a products and services basis for internal management reporting and, therefore, such information is not

presented.

125

 
 
 
  
    
    
 
   
   
 
  
    
    
 
   
   
 
  
    
    
 
   
   
 
 
 
 
Table of Contents

Report of Independent Registered Public Accounting Firm

To the Board of Directors and Shareholders of Merck & Co., Inc.:

In our opinion, the accompanying consolidated balance sheets and the related consolidated statements of income, comprehensive income, equity and cash flows
present fairly, in all material respects, the financial position of Merck & Co., Inc. and its subsidiaries at December 31, 2016 and December 31, 2015, and the results
of their operations and their cash flows for each of the three years in the period ended December 31, 2016 in conformity with accounting principles generally
accepted in the United States of America. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting
as of December 31, 2016 , based on criteria established in Internal
Control
-
Integrated
Framework
(2013) issued by the Committee of Sponsoring Organizations
of the Treadway Commission (COSO). The Company's management is responsible for these financial statements, for maintaining effective internal control over
financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in Management's Report under Item 9a. Our
responsibility is to express opinions on these financial statements and on the Company's internal control over financial reporting based on our integrated audits. We
conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan
and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement and whether effective internal
control over financial reporting was maintained in all material respects. Our audits of the financial statements included examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and
evaluating the overall financial statement presentation. Our audit of internal control over financial reporting included obtaining an understanding of internal control
over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control
based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits
provide a reasonable basis for our opinions.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the
preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial
reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions
and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial
statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with
authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized
acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with
the policies or procedures may deteriorate.

PricewaterhouseCoopers LLP
Florham Park, New Jersey
February 28, 2017

126

  
Table of Contents

(b)

Supplementary Data

Selected quarterly financial data for 2016 and 2015 are contained in the Condensed Interim Financial Data table below.

Condensed Interim Financial Data (Unaudited)

($
in
millions
except
per
share
amounts)

2016 (4)

Sales

Materials and production

Marketing and administrative

Research and development

Restructuring costs

Other (income) expense, net

(Loss) income before taxes

Net (loss) income attributable to Merck & Co., Inc.

Basic (loss) earnings per common share attributable to Merck & Co., Inc. common

shareholders

(Loss) earnings per common share assuming dilution attributable to Merck & Co., Inc.

common shareholders

2015 (4)

Sales

Materials and production

Marketing and administrative

Research and development

Restructuring costs

Other (income) expense, net

Income before taxes

Net income attributable to Merck & Co., Inc.

Basic earnings per common share attributable to Merck & Co., Inc. common shareholders

Earnings per common share assuming dilution attributable to Merck & Co., Inc. common

shareholders

4th Q (1)

3rd Q (2)

2nd Q (3)

1st Q

$

10,115   $

10,536   $

9,844   $

3,332  

2,593  

4,650  

265  

631  

(1,356)  

(594)  

3,409  

2,393  

1,664  

161  

22  

2,887  

2,184  

3,578  

2,458  

2,151  

134  

19  

1,504  

1,205  

9,312

3,572

2,318

1,659

91

48

1,624

1,125

$

$

$

$

$

(0.22)   $

0.79   $

0.44   $

0.41

(0.22)   $

0.78   $

0.43   $

0.40

10,215   $

10,073   $

9,785   $

3,850  

2,615  

1,797  

233  

905  

815  

976  

3,761  

2,472  

1,500  

113  

(170)  

2,397  

1,826  

3,754  

2,624  

1,670  

191  

739  

807  

687  

0.35   $

0.65   $

0.24   $

9,425

3,569

2,601

1,737

82

55

1,381

953

0.34

0.35   $

0.64   $

0.24   $

0.33

(1)

Amounts
for
2016
include
a
charge
to
settle
worldwide
patent
litigation
related
to
Keytruda
(see
Note
10).
Amounts
for
2015
reflect
a
net
charge
related
to
the
settlement
of
Vioxx shareholder
class
action
litigation
(see
Note
10),
foreign
exchange
losses
related
to
Venezuela
(see
Note
14)
and
a
gain
on
the
sale
of
the
Company’s
remaining
ophthalmics
business
in
international
markets
(see
Note
3).

(2)

Amounts
for
2015
include
a
gain
on
the
sale
of
certain
migraine
clinical
development
programs
(see
Note
3).
(3)
Amounts
for
2015
include
foreign
exchange
losses
related
to
the
devaluation
of
the
Company’s
net
monetary
assets
in
Venezuela
(see
Note
14).
(4)

Amounts
for
2016
and
2015
reflect
acquisition
and
divestiture-related
costs
(see
Note
7)
and
the
impact
of
restructuring
actions
(see
Note
4).

127

 
 
 
 
   
   
   
 
   
   
   


Table of Contents

Item 9.     Changes in and Disagreements with Accountants on Accounting and Financial Disclosure.

Not applicable.

Item 9A.   Controls and Procedures.

Management  of  the  Company,  with  the  participation  of  its  Chief  Executive  Officer  and  Chief  Financial  Officer,  evaluated  the  effectiveness  of  the
Company’s disclosure controls and procedures. Based on their evaluation, as of the end of the period covered by this Form 10-K, the Company’s Chief Executive
Officer and Chief Financial Officer have concluded that the Company’s disclosure controls and procedures (as defined in Rules 13a-15(e) or 15d-15(e) under the
Securities Exchange Act of 1934, as amended (the Act)) are effective.

Management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Rule 13a-15(f)
of  the  Act.  Management  conducted  an  evaluation  of  the  effectiveness  of  internal  control  over  financial  reporting  based  on  the  framework  in  Internal
Control 
— 
Integrated 
Framework
 issued  in  2013  by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway  Commission.  Based  on  this  evaluation,
management  concluded  that  internal  control  over  financial  reporting  was  effective  as  of  December  31,  2016  .  PricewaterhouseCoopers  LLP,  an  independent
registered  public  accounting  firm,  has  performed  its  own  assessment  of  the  effectiveness  of  the  Company’s  internal  control  over  financial  reporting  and  its
attestation report is included in this Form 10-K filing.

Management’s Report

Management’s Responsibility for Financial Statements

Responsibility  for  the  integrity  and  objectivity  of  the  Company’s  financial  statements  rests  with  management.  The  financial  statements  report  on
management’s  stewardship  of  Company  assets.  These  statements  are  prepared  in  conformity  with  generally  accepted  accounting  principles  and,  accordingly,
include amounts that are based on management’s best estimates and judgments. Nonfinancial information included in the Annual Report on Form 10-K has also
been prepared by management and is consistent with the financial statements.

To  assure  that  financial  information  is  reliable  and  assets  are  safeguarded,  management  maintains  an  effective  system  of  internal  controls  and
procedures, important elements of which include: careful selection, training and development of operating and financial managers; an organization that provides
appropriate division of responsibility; and communications aimed at assuring that Company policies and procedures are understood throughout the organization. A
staff of internal auditors regularly monitors the adequacy and application of internal controls on a worldwide basis.

To  ensure  that  personnel  continue  to  understand  the  system  of  internal  controls  and  procedures,  and  policies  concerning  good  and  prudent  business
practices, annually all employees of the Company are required to complete Code of Conduct training, which includes financial stewardship. This training reinforces
the  importance  and  understanding  of  internal  controls  by  reviewing  key  corporate  policies,  procedures  and  systems.  In  addition,  the  Company  has  compliance
programs, including an ethical business practices program to reinforce the Company’s long-standing commitment to high ethical standards in the conduct of its
business.

The  financial  statements  and  other  financial  information  included  in  the  Annual  Report  on  Form  10-K  fairly  present,  in  all  material  respects,  the
Company’s  financial  condition,  results  of  operations  and  cash  flows.  Our  formal  certification  to  the  Securities  and  Exchange  Commission  is  included  in  this
Form 10-K filing.

Management’s Report on Internal Control Over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Rule 13a-15(f)
under  the  Securities  Exchange  Act  of  1934.  The  Company’s  internal  control  over  financial  reporting  is  designed  to  provide  reasonable  assurance  regarding  the
reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles in the
United States of America. Management conducted an evaluation of the effectiveness of internal control over financial reporting based on the framework in Internal
Control 
— 
Integrated 
Framework
 issued  in  2013  by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway  Commission.  Based  on  this  evaluation,
management concluded that internal control over financial reporting was effective as of December 31, 2016 .

128

Table of Contents

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Projections of any evaluation of
effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with
the policies or procedures may deteriorate.

The effectiveness of the Company’s internal control over financial reporting as of December 31, 2016 , has been audited by PricewaterhouseCoopers

LLP, an independent registered public accounting firm, as stated in their report which appears herein.

Kenneth C. Frazier

Chairman,
President
and
Chief
Executive
Officer

Item 9B. Other Information.

None.

Robert M. Davis

Executive
Vice
President,
Global
Services
and
Chief
Financial
Officer

129

 
 
 
 
 
 
 
Table of Contents

PART III

Item 10. Directors, Executive Officers and Corporate Governance.

The required  information  on directors  and nominees  is incorporated  by reference  from  the discussion  under Proposal 1. Election  of Directors  of the
Company’s  Proxy  Statement  for  the  Annual  Meeting  of  Shareholders  to  be  held  May  23,  2017.  Information  on  executive  officers  is  set  forth  in  Part  I  of  this
document on page 29.

The required information on compliance with Section 16(a) of the Securities Exchange Act of 1934 is incorporated by reference from the discussion
under the heading “Section 16(a) Beneficial Ownership Reporting Compliance” of the Company’s Proxy Statement for the Annual Meeting of Shareholders to be
held May 23, 2017.

 principal

 accounting  officer

The Company  has a Code of Conduct  — Our
Values 
and
Standards
 applicable to all employees, including the principal executive officer, principal
financial
 at
 Code
 officer,
www.merck.com/about/code_of_conduct.pdf
. The Company intends to disclose future amendments to certain provisions of the Code of Conduct, and waivers of
the Code of Conduct granted to executive officers and directors, if any, on the website within four business days following the date of any amendment or waiver.
Every  Merck  employee  is  responsible  for  adhering  to  business  practices  that  are  in  accordance  with  the  law  and  with  ethical  principles  that  reflect  the  highest
standards of corporate and individual behavior. A printed copy will be sent, without charge, to any shareholder who requests it by writing to the Chief Ethics and
Compliance Officer of Merck & Co., Inc., 2000 Galloping Hill Road, Kenilworth, NJ 07033.

 and  Controller.

 Company’s

 available

 on  the

 Conduct

 website

 The

 of

 is

The required information on the identification of the audit committee and the audit committee financial expert is incorporated by reference from the
discussion under the heading “Board Meetings and Committees” of the Company’s Proxy Statement for the Annual Meeting of Shareholders to be held May 23,
2017.

Item 11. Executive Compensation.

The information required on executive compensation is incorporated by reference from the discussion under the headings “Compensation Discussion
and  Analysis”,  “Summary  Compensation  Table”,  “All  Other  Compensation”  table,  “Grants  of  Plan-Based  Awards”  table,  “Outstanding  Equity  Awards”  table,
“Option Exercises  and Stock Vested” table,  “Pension Benefits”  table,  “Nonqualified  Deferred  Compensation”  table,  Potential  Payments  Upon Termination  or a
Change in Control, including the discussion under the subheadings “Separation” and “Change in Control”, as well as all footnote information to the various tables,
of the Company’s Proxy Statement for the Annual Meeting of Shareholders to be held May 23, 2017.

The required information on director compensation is incorporated by reference from the discussion under the heading “Director Compensation” and
related “Director Compensation” table and “Schedule of Director Fees” table of the Company’s Proxy Statement for the Annual Meeting of Shareholders to be held
May 23, 2017.

The  required  information  under  the  headings  “Compensation  and  Benefits  Committee  Interlocks  and  Insider  Participation”  and  “Compensation  and

Benefits Committee Report” is incorporated by reference from the Company’s Proxy Statement for the Annual Meeting of Shareholders to be held May 23, 2017.

130

 
Table of Contents

Item 12.

Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.

Information with respect to security ownership of certain beneficial owners and management is incorporated by reference from the discussion under the

heading “Stock Ownership Information” of the Company’s Proxy Statement for the Annual Meeting of Shareholders to be held May 23, 2017.

Equity Compensation Plan Information

The  following  table  summarizes  information  about  the  options,  warrants  and  rights  and  other  equity  compensation  under  the  Company’s  equity
compensation plans as of the close of business on December 31, 2016. The table does not include information about tax qualified plans such as the Merck U.S.
Savings Plan.

Number of
securities to be
issued upon
exercise of
outstanding
options, warrants
and rights
(a)

Weighted-average
exercise price of
outstanding
options, warrants
and rights
(b)

Number of
securities remaining
available for future
issuance under equity
compensation plans
(excluding
securities
reflected in column (a))
(c)

45,050,279 (2)

  $

—  

45,050,279   $

44.47  

—  

44.47  

124,902,265

—

124,902,265

Plan Category
Equity compensation plans approved by security holders (1)
Equity compensation plans not approved by security holders

Total
(1)



Includes
options
to
purchase
shares
of
Company
Common
Stock
and
other
rights
under
the
following
shareholder-approved
plans:
the
Merck
Sharp
&
Dohme
2004,
2007
and
2010
Incentive
Stock
Plans,
the
Merck
&
Co.,
Inc.
2006
and
2010
Non-Employee
Directors
Stock
Option
Plans,
and
the
Merck
&
Co.,
Inc.
Schering-Plough
2002
and
2006
Stock
Incentive
Plans.

(2)

 Excludes
approximately
13,265,959
shares
of
restricted
stock
units
and
1,743,587
performance
share
units
(assuming
maximum
payouts)
under
the
Merck
Sharp
&
Dohme
2004,
2007
and
2010
Incentive
Stock
Plans.
Also
excludes
244,119
shares
of
phantom
stock
deferred
under
the
MSD
Employee
Deferral
Program
and
561,846
shares
of
phantom
stock
deferred
under
the
Merck
&
Co.,
Inc.
Plan
for
Deferred
Payment
of
Directors’
Compensation.

Item 13. Certain Relationships and Related Transactions, and Director Independence.

The  required  information  on  transactions  with  related  persons  is  incorporated  by  reference  from  the  discussion  under  the  heading  “Related  Person

Transactions” of the Company’s Proxy Statement for the Annual Meeting of Shareholders to be held May 23, 2017.

The required information on director independence is incorporated by reference from the discussion under the heading “Independence of Directors” of

the Company’s Proxy Statement for the Annual Meeting of Shareholders to be held May 23, 2017.

Item 14. Principal Accountant Fees and Services.

The information required for this item is incorporated by reference from the discussion under Proposal 4. Ratification of Appointment of Independent
Registered Public Accounting Firm for 2017 beginning with the caption “Pre-Approval Policy for Services of Independent Registered Public Accounting Firm”
through  “Fees  for  Services  Provided  by  Independent  Registered  Public  Accounting  Firm”  of  the  Company’s  Proxy  Statement  for  the  Annual  Meeting  of
Shareholders to be held May 23, 2017.

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Item 15.

Exhibits and Financial Statement Schedules.

(a)    The following documents are filed as part of this Form 10-K

1.    Financial Statements

PART IV

Consolidated statement of income for the years ended December 31, 2016 , 2015 and 2014

Consolidated statement of comprehensive income for the years ended December 31, 2016 , 2015 and 2014

Consolidated balance sheet as of December 31, 2016 and 2015

Consolidated statement of equity for the years ended December 31, 2016 , 2015 and 2014

Consolidated statement of cash flows for the years ended December 31, 2016 , 2015 and 2014

Notes to consolidated financial statements

Report of PricewaterhouseCoopers LLP, independent registered public accounting firm

2.    Financial Statement Schedules

Schedules are omitted because they are either not required or not applicable.

Financial statements of affiliates carried on the equity basis have been omitted because, considered individually or in the aggregate, such affiliates do

not constitute a significant subsidiary.

3.    Exhibits

Exhibit
Number

  Description

3.1

3.2

4.1

4.2

4.3

4.4

4.5

4.6

4.7

—

—

—

—

—

—

—

—

—

Restated  Certificate  of  Incorporation  of  Merck  &  Co.,  Inc.  (November  3,  2009)  —  Incorporated  by  reference  to  Merck  &  Co.,  Inc.’s
Current Report on Form 8-K filed November 4, 2009 (No. 1-6571)

By-Laws of Merck & Co., Inc. (effective July 22, 2015) — Incorporated by reference to Merck & Co., Inc.’s Current Report on Form 8-K
filed July 28, 2015 (No. 1-6571)

Indenture,  dated  as  of April  1, 1991, between  Merck  Sharp  &  Dohme Corp. (f/k/a  Schering  Corporation)  and U.S. Bank Trust  National
Association (as successor to Morgan Guaranty Trust Company of New York), as Trustee (the 1991 Indenture) — Incorporated by reference
to Exhibit 4 to MSD’s Registration Statement on Form S-3 (No. 33-39349)

First Supplemental Indenture to the 1991 Indenture, dated as of October 1, 1997 — Incorporated by reference to Exhibit 4(b) to MSD’s
Registration Statement on Form S-3 (No. 333-36383)

Second Supplemental Indenture to the 1991 Indenture, dated November 3, 2009 — Incorporated by reference to Exhibit 4.3 to Merck &
Co., Inc.’s Current Report on Form 8-K filed November 4, 2009 (No.1-6571)

Third Supplemental Indenture to the 1991 Indenture, dated May 1, 2012 —Incorporated by reference to Merck & Co., Inc.’s Form 10-Q
Quarterly Report for the quarter year ended March 31, 2012 (No. 1-6571)

Indenture,  dated  November  26,  2003,  between  Merck  &  Co.,  Inc.  (f/k/a  Schering-Plough  Corporation)  and  The  Bank  of  New  York  as
Trustee  (the  2003  Indenture)  —  Incorporated  by  reference  to  Exhibit  4.1  to  Schering-Plough’s  Current  Report  on  Form  8‑K  filed
November 28, 2003 (No. 1-6571)

Second Supplemental Indenture to the 2003 Indenture (including Form of Note), dated November 26, 2003 —Incorporated by reference to
Exhibit 4.3 to Schering-Plough’s Current Report on Form 8‑K filed November 28, 2003 (No. 1-6571)
Third Supplemental Indenture to the 2003 Indenture (including Form of Note), dated September 17, 2007 — Incorporated by reference to
Exhibit 4.1 to Schering-Plough’s Current Report on Form 8‑K filed September 17, 2007 (No. 1-6571)

132

 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit
Number

4.8

4.9

4.10

*10.1

*10.2

*10.3

*10.4

*10.5

*10.6

*10.7

*10.8

*10.9

*10.10

*10.11

*10.12

*10.13

*10.14

  Description

—

—

—

—

Fifth Supplemental Indenture to the 2003 Indenture, dated November 3, 2009 — Incorporated by reference to Exhibit 4.4 to Merck & Co.,
Inc.’s Current Report on Form 8-K filed November 4, 2009 (No. 1-6571)

Indenture, dated as of January 6, 2010, between Merck & Co., Inc. and U.S. Bank Trust National Association, as Trustee — Incorporated
by reference to Exhibit 4.1 to Merck & Co., Inc.’s Current Report on Form 8-K filed December 10, 2010 (No. 1-6571)

Long-term  debt  instruments  under  which  the  total  amount  of  securities  authorized  does  not  exceed  10%  of  Merck  &  Co.,  Inc.’s  total
consolidated assets are not filed as exhibits to this report. Merck & Co., Inc. will furnish a copy of these agreements to the Securities and
Exchange Commission on request.

Merck & Co., Inc. Executive Incentive Plan (as amended and restated effective June 1, 2015) — Incorporated by reference to Merck & Co.,
Inc.’s Schedule 14A filed April 13, 2015 (No. 1-6571)

  —   Merck & Co., Inc. Deferral Program Including the Base Salary Deferral Plan (Amended and Restated effective December 1, 2015)

—

—

—

—

—

—

—

—

—

—

—

—

Merck Sharp & Dohme Corp. 2004 Incentive Stock Plan (amended and restated as of November 3, 2009) — Incorporated by reference to
Exhibit 10.8 to Merck & Co., Inc.’s Current Report on Form 8‑K filed November 4, 2009 (No. 1-6571)
Merck Sharp & Dohme Corp. 2007 Incentive Stock Plan (effective as amended and restated as of November 3, 2009) — Incorporated by
reference to Exhibit 10.7 to Merck & Co., Inc.’s Current Report on Form 8-K filed November 4, 2009 (No. 1-6571)

Amendment  One  to  the  Merck  Sharp  &  Dohme  Corp.  2007  Incentive  Stock  Plan  (effective  February  15,  2010)  —  Incorporated  by
reference to Exhibit 10.2 to Merck & Co., Inc.’s Current Report on Form 8-K filed February 18, 2010 (No. 1-6571)

Merck & Co., Inc. 2010 Incentive Stock Plan (as amended and restated June 1, 2015) — Incorporated by reference to Merck & Co., Inc.’s
Schedule 14A filed April 13, 2015 (No. 1-6571)

Form of stock option terms  for a non-qualified  stock option under the Merck Sharp & Dohme Corp. 2007 Incentive  Stock Plan and the
Schering-Plough 2006 Stock Incentive Plan — Incorporated by reference to Exhibit 10.3 to Merck & Co., Inc.’s Current Report on Form 8-
K filed February 15, 2010 (No. 1-6571)

Form of stock option terms for 2011 quarterly and annual non-qualified option grants under the Merck & Co., Inc. 2010 Incentive Stock
Plan — Incorporated by reference to Merck & Co., Inc.’s Form 10‑Q Quarterly Report for the period ended March 31, 2011 (No. 1-6571)
Form of performance share unit terms for 2012 grants under the Merck & Co., Inc. 2010 Incentive Stock Plan — Incorporated by reference
to Merck & Co., Inc.’s Form 10-Q Quarterly Report for the period ended March 31, 2012 (No. 1-6571)

Form of stock option terms for 2013 quarterly and annual non-qualified option grants under the Merck & Co., Inc. 2010 Incentive Stock
Plan — Incorporated by reference to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2012 (No. 1-
6571)

Form  of  restricted  stock  unit  terms  for  2013  quarterly  and  annual  grants  under  the  Merck  &  Co.,  Inc.  2010  Incentive  Stock
Plan — Incorporated by reference to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2012 (No. 1-
6571)

Form of performance share unit terms for 2013 grants under the Merck & Co., Inc. 2010 Incentive Stock Plan — Incorporated by reference
to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2014 (No. 1-6571)

Form of stock option terms for 2014 quarterly and annual non-qualified option grants under the Merck & Co., Inc. 2010 Incentive Stock
Plan — Incorporated by reference to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2014 (No. 1-
6571)

Form  of  restricted  stock  unit  terms  for  2014  quarterly  and  annual  grants  under  the  Merck  &  Co.,  Inc.  2010  Incentive  Stock
Plan — Incorporated by reference to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2014 (No. 1-
6571)

133

   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit
Number

*10.15

*10.16

*10.17

*10.18

*10.19

  Description

—

—

—

—

—

Form of performance share unit terms for 2014 grants under the Merck & Co., Inc. 2010 Stock Incentive Plan — Incorporated by reference
to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2014 (No. 1-6571)

Form of stock option terms for 2015 quarterly and annual non-qualified option grants under the Merck & Co., Inc. 2010 Incentive Stock
Plan — Incorporated by reference to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2015 (No. 1-
6571)

Form  of  restricted  stock  unit  terms  for  2015  quarterly  and  annual  grants  under  the  Merck  &  Co.,  Inc.  2010  Incentive  Stock
Plan — Incorporated by reference to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2015 (No. 1-
6571)

Form of performance share unit terms for 2015 grants under the Merck & Co., Inc. 2010 Stock Incentive Plan — Incorporated by reference
to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2015 (No. 1-6571)

Form of stock option terms for 2016 quarterly and annual non-qualified option grants under the Merck & Co., Inc. 2010 Incentive Stock
Plan

*10.20

  —   Form of restricted stock unit terms for 2016 quarterly and annual grants under the Merck & Co., Inc. 2010 Incentive Stock Plan

*10.21

  —   Form of performance share unit terms for 2016 grants under the Merck & Co., Inc. 2010 Stock Incentive Plan

*10.22

*10.23

—

—

Merck & Co., Inc. Change in Control Separation Benefits Plan (Effective as Amended and Restated, as of January 1, 2013) — Incorporated
by reference to Merck & Co., Inc.’s Current Report on Form 8‑K dated November 29, 2012 (No. 1-6571)
Merck & Co., Inc. U.S. Separation Benefits Plan (amended and restated effective as of November 15, 2014) — Incorporated by reference to
Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2014 (No. 1-6571)

*10.24

  —   Merck & Co., Inc. U.S. Separation Benefits Plan (amended and restated effective as of January 1, 2017)

*10.25

*10.26

*10.27

*10.28

10.29

10.30

10.31

—

—

—

—

—

—

—

Merck & Co., Inc. 2006 Non-Employee Directors Stock Option Plan (amended and restated as of November 3, 2009) — Incorporated by
reference to Exhibit 10.5 to Merck & Co., Inc.’s Current Report on Form 8-K filed November 4, 2009 (No. 1-6571)

Merck & Co., Inc. 2010 Non-Employee Directors Stock Option Plan (amended and restated as of December 1, 2010) — Incorporated by
reference to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2010 (No. 1-6571)

Retirement Plan for the Directors of Merck & Co., Inc. (amended and restated June 21, 1996) —Incorporated by reference to MSD’s Form
10-Q Quarterly Report for the period ended June 30, 1996 (No. 1-3305)

Merck  &  Co.,  Inc.  Plan  for  Deferred  Payment  of  Directors’  Compensation  (effective  as  amended  and  restated  as  of  December  1,
2010) — Incorporated by reference to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2010 (No. 1-
6571)

Distribution agreement between Schering-Plough and Centocor, Inc., dated April 3, 1998 — Incorporated by reference to Exhibit 10(u) to
Schering-Plough’s Amended 10-K for the year ended December 31, 2003, filed May 3, 2004 (No. 1-6571)†

Amendment Agreement to the Distribution Agreement between Centocor, Inc., CAN Development, LLC, and Schering-Plough (Ireland)
Company — Incorporated by reference to Exhibit 10.1 to Schering-Plough’s Current Report on Form 8-K filed December 21, 2007 (No. 1-
6571)†

Accelerated Share Purchase Agreement between Merck & Co., Inc. and Goldman, Sachs & Co., dated May 20, 2013 — Incorporated by
reference to Merck & Co., Inc.’s Form 10-Q Quarterly Report for the period ended June 30, 2013 (No. 1-6571)

134

   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit
Number

  Description

12

21

23

24.1

24.2

31.1

31.2

32.1

32.2

101

  —   Computation of Ratios of Earnings to Fixed Charges

  —   Subsidiaries of Merck & Co., Inc.

  —   Consent of Independent Registered Public Accounting Firm

  —   Power of Attorney

  —   Certified Resolution of Board of Directors

  —   Rule 13a-14(a)/15d-14(a) Certification of Chief Executive Officer

  —   Rule 13a-14(a)/15d-14(a) Certification of Chief Financial Officer

  —   Section 1350 Certification of Chief Executive Officer

  —   Section 1350 Certification of Chief Financial Officer

—

The following materials from Merck & Co., Inc.’s Annual Report on Form 10-K for the fiscal year ended December 31, 2016, formatted in
XBRL  (Extensible  Business  Reporting  Language):  (i)  the  Consolidated  Statement  of  Income,  (ii)  the  Consolidated  Statement  of
Comprehensive Income, (iii) the Consolidated Balance Sheet, (iv) the Consolidated Statement of Equity, (v) the Consolidated Statement of
Cash Flows, and (vi) Notes to Consolidated Financial Statements.

*
†

Management
contract
or
compensatory
plan
or
arrangement.
Certain
portions
of
the
exhibit
have
been
omitted
pursuant
to
a
request
for
confidential
treatment.
The
non-public
information
has
been
filed
separately
with
the
Securities
and
Exchange
Commission
pursuant
to
rule
24b-2
under
the
Securities
Exchange
Act
of
1934,
as
amended.

Item 16.    Form 10-K Summary

Not applicable.

135

   
 
 
                
Table of Contents

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its

SIGNATURES

behalf by the undersigned, thereunto duly authorized.

Dated:    February 28, 2017

MERCK & CO., INC.

By:

KENNETH C. FRAZIER

(Chairman, President and Chief Executive Officer)

By:

/S/ MICHAEL J. HOLSTON

Michael J. Holston

(Attorney-in-Fact)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the

Registrant and in the capacities and on the dates indicated.

Signatures

Title

Date

KENNETH C. FRAZIER

ROBERT M. DAVIS

Chairman, President and Chief Executive Officer;

Principal Executive Officer; Director

Executive Vice President, Global Services and

Chief Financial Officer; Principal Financial Officer

RITA A. KARACHUN

Senior Vice President Finance-Global Controller;

Principal Accounting Officer

LESLIE A. BRUN

THOMAS R. CECH

PAMELA J. CRAIG

THOMAS H. GLOCER

C. ROBERT KIDDER

ROCHELLE B. LAZARUS

CARLOS E. REPRESAS

PAUL B. ROTHMAN

PATRICIA F. RUSSO

CRAIG B. THOMPSON

WENDELL P. WEEKS

PETER C. WENDELL

  Director

  Director

  Director

  Director

  Director

  Director

  Director

  Director

  Director

  Director

  Director

  Director

February 28, 2017

February 28, 2017

February 28, 2017

February 28, 2017

February 28, 2017

February 28, 2017

February 28, 2017

February 28, 2017

February 28, 2017

February 28, 2017

February 28, 2017

February 28, 2017

February 28, 2017

February 28, 2017

February 28, 2017

Michael J. Holston, by signing his name hereto, does hereby sign this document pursuant to powers of attorney duly executed by the persons named,
filed with the Securities and Exchange Commission as an exhibit to this document, on behalf of such persons, all in the capacities and on the date stated, such
persons including a majority of the directors of the Company.

By:

  /S/ MICHAEL J. HOLSTON

  Michael J. Holston

  (Attorney-in-Fact)

136

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit
Number

  Description

EXHIBIT INDEX

3.1

3.2

4.1

4.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9

4.10

*10.1

*10.2

*10.3

*10.4

*10.5

—

—

—

—

—

—

—

—

—

—

—

—

—

Restated  Certificate  of  Incorporation  of  Merck  &  Co.,  Inc.  (November  3,  2009)  —  Incorporated  by  reference  to  Merck  &  Co.,  Inc.’s
Current Report on Form 8-K filed November 4, 2009 (No. 1-6571)

By-Laws of Merck & Co., Inc. (effective July 22, 2015) — Incorporated by reference to Merck & Co., Inc.’s Current Report on Form 8-K
filed July 28, 2015 (No. 1-6571)

Indenture,  dated  as  of April  1, 1991, between  Merck  Sharp  &  Dohme Corp. (f/k/a  Schering  Corporation)  and U.S. Bank Trust  National
Association (as successor to Morgan Guaranty Trust Company of New York), as Trustee (the 1991 Indenture) — Incorporated by reference
to Exhibit 4 to MSD’s Registration Statement on Form S-3 (No. 33-39349)

First Supplemental Indenture to the 1991 Indenture, dated as of October 1, 1997 — Incorporated by reference to Exhibit 4(b) to MSD’s
Registration Statement on Form S-3 (No. 333-36383)

Second Supplemental Indenture to the 1991 Indenture, dated November 3, 2009 — Incorporated by reference to Exhibit 4.3 to Merck &
Co., Inc.’s Current Report on Form 8-K filed November 4, 2009 (No.1-6571)

Third Supplemental Indenture to the 1991 Indenture, dated May 1, 2012 —Incorporated by reference to Merck & Co., Inc.’s Form 10-Q
Quarterly Report for the quarter year ended March 31, 2012 (No. 1-6571)

Indenture,  dated  November  26,  2003,  between  Merck  &  Co.,  Inc.  (f/k/a  Schering-Plough  Corporation)  and  The  Bank  of  New  York  as
Trustee  (the  2003  Indenture)  —  Incorporated  by  reference  to  Exhibit  4.1  to  Schering-Plough’s  Current  Report  on  Form  8‑K  filed
November 28, 2003 (No. 1-6571)

Second Supplemental Indenture to the 2003 Indenture (including Form of Note), dated November 26, 2003 —Incorporated by reference to
Exhibit 4.3 to Schering-Plough’s Current Report on Form 8‑K filed November 28, 2003 (No. 1-6571)
Third Supplemental Indenture to the 2003 Indenture (including Form of Note), dated September 17, 2007 — Incorporated by reference to
Exhibit 4.1 to Schering-Plough’s Current Report on Form 8‑K filed September 17, 2007 (No. 1-6571)
Fifth Supplemental Indenture to the 2003 Indenture, dated November 3, 2009 — Incorporated by reference to Exhibit 4.4 to Merck & Co.,
Inc.’s Current Report on Form 8-K filed November 4, 2009 (No. 1-6571)

Indenture, dated as of January 6, 2010, between Merck & Co., Inc. and U.S. Bank Trust National Association, as Trustee — Incorporated
by reference to Exhibit 4.1 to Merck & Co., Inc.’s Current Report on Form 8-K filed December 10, 2010 (No. 1-6571)

Long-term  debt  instruments  under  which  the  total  amount  of  securities  authorized  does  not  exceed  10%  of  Merck  &  Co.,  Inc.’s  total
consolidated assets are not filed as exhibits to this report. Merck & Co., Inc. will furnish a copy of these agreements to the Securities and
Exchange Commission on request.

Merck & Co., Inc. Executive Incentive Plan (as amended and restated effective June 1, 2015) — Incorporated by reference to Merck & Co.,
Inc.’s Schedule 14A filed April 13, 2015 (No. 1-6571)

  —   Merck & Co., Inc. Deferral Program Including the Base Salary Deferral Plan (Amended and Restated effective December 1, 2015

—

—

—

Merck Sharp & Dohme Corp. 2004 Incentive Stock Plan (amended and restated as of November 3, 2009) — Incorporated by reference to
Exhibit 10.8 to Merck & Co., Inc.’s Current Report on Form 8‑K filed November 4, 2009 (No. 1-6571)
Merck Sharp & Dohme Corp. 2007 Incentive Stock Plan (effective as amended and restated as of November 3, 2009) — Incorporated by
reference to Exhibit 10.7 to Merck & Co., Inc.’s Current Report on Form 8-K filed November 4, 2009 (No. 1-6571)

Amendment  One  to  the  Merck  Sharp  &  Dohme  Corp.  2007  Incentive  Stock  Plan  (effective  February  15,  2010)  —  Incorporated  by
reference to Exhibit 10.2 to Merck & Co., Inc.’s Current Report on Form 8-K filed February 18, 2010 (No. 1-6571)

137

 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit
Number

*10.6

*10.7

*10.8

*10.9

*10.10

*10.11

*10.12

*10.13

*10.14

*10.15

*10.16

*10.17

*10.18

*10.19

  Description

—

—

—

—

—

—

—

—

—

—

—

—

—

—

Merck & Co., Inc. 2010 Incentive Stock Plan (as amended and restated June 1, 2015) — Incorporated by reference to Merck & Co., Inc.’s
Schedule 14A filed April 13, 2015 (No. 1-6571)

Form of stock option terms  for a non-qualified  stock option under the Merck Sharp & Dohme Corp. 2007 Incentive  Stock Plan and the
Schering-Plough 2006 Stock Incentive Plan — Incorporated by reference to Exhibit 10.3 to Merck & Co., Inc.’s Current Report on Form 8-
K filed February 15, 2010 (No. 1-6571)

Form of stock option terms for 2011 quarterly and annual non-qualified option grants under the Merck & Co., Inc. 2010 Incentive Stock
Plan — Incorporated by reference to Merck & Co., Inc.’s Form 10‑Q Quarterly Report for the period ended March 31, 2011 (No. 1-6571)
Form of stock option terms for 2012 quarterly and annual non-qualified option grants under the Merck & Co., Inc. 2010 Incentive Stock
Plan — Incorporated by reference to Merck & Co., Inc.’s Form 10‑K Annual Report for the fiscal year ended December 31, 2011 (No. 1-
6571)

Form of stock option terms for 2013 quarterly and annual non-qualified option grants under the Merck & Co., Inc. 2010 Incentive Stock
Plan — Incorporated by reference to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2012 (No. 1-
6571)

Form  of  restricted  stock  unit  terms  for  2013  quarterly  and  annual  grants  under  the  Merck  &  Co.,  Inc.  2010  Incentive  Stock
Plan — Incorporated by reference to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2012 (No. 1-
6571)

Form of performance share unit terms for 2013 grants under the Merck & Co., Inc. 2010 Incentive Stock Plan — Incorporated by reference
to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2014 (No. 1-6571)

Form of stock option terms for 2014 quarterly and annual non-qualified option grants under the Merck & Co., Inc. 2010 Incentive Stock
Plan — Incorporated by reference to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2014 (No. 1-
6571)

Form  of  restricted  stock  unit  terms  for  2014  quarterly  and  annual  grants  under  the  Merck  &  Co.,  Inc.  2010  Incentive  Stock
Plan — Incorporated by reference to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2014 (No. 1-
6571)

Form of performance share unit terms for 2014 grants under the Merck & Co., Inc. 2010 Stock Incentive Plan — Incorporated by reference
to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2014 (No. 1-6571)

Form of stock option terms for 2015 quarterly and annual non-qualified option grants under the Merck & Co., Inc. 2010 Incentive Stock
Plan — Incorporated by reference to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2015 (No. 1-
6571)

Form  of  restricted  stock  unit  terms  for  2015  quarterly  and  annual  grants  under  the  Merck  &  Co.,  Inc.  2010  Incentive  Stock  Plan
— Incorporated by reference to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2015 (No. 1-6571)

Form of performance share unit terms for 2015 grants under the Merck & Co., Inc. 2010 Stock Incentive Plan — Incorporated by reference
to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2015 (No. 1-6571)

Form of stock option terms for 2016 quarterly and annual non-qualified option grants under the Merck & Co., Inc. 2010 Incentive Stock
Plan

*10.20

  —   Form of restricted stock unit terms for 2016 quarterly and annual grants under the Merck & Co., Inc. 2010 Incentive Stock Plan

*10.21

  —   Form of performance share unit terms for 2016 grants under the Merck & Co., Inc. 2010 Stock Incentive Plan

*10.22

*10.23

—

—

Merck & Co., Inc. Change in Control Separation Benefits Plan (Effective as Amended and Restated, as of January 1, 2013) — Incorporated
by reference to Merck & Co., Inc.’s Current Report on Form 8‑K dated November 29, 2012 (No. 1-6571)
Merck & Co., Inc. U.S. Separation Benefits Plan (amended and restated effective as of November 15, 2014) — Incorporated by reference to
Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2014 (No. 1-6571)

138

   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit
Number

*10.24

*10.25

*10.26

*10.27

*10.28

10.29

10.30

10.31

12

21

23

24.1

24.2

31.1

31.2

32.1

32.2

101

  Description

  Merck & Co., Inc. U.S. Separation Benefits Plan (amended and restated effective as of January 1, 2017)

—

—

—

—

—

—

—

Merck & Co., Inc. 2006 Non-Employee Directors Stock Option Plan (amended and restated as of November 3, 2009) — Incorporated by
reference to Exhibit 10.5 to Merck & Co., Inc.’s Current Report on Form 8-K filed November 4, 2009 (No. 1-6571)

Merck & Co., Inc. 2010 Non-Employee Directors Stock Option Plan (amended and restated as of December 1, 2010) — Incorporated by
reference to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2010 (No. 1-6571)

Retirement Plan for the Directors of Merck & Co., Inc. (amended and restated June 21, 1996) —Incorporated by reference to MSD’s Form
10-Q Quarterly Report for the period ended June 30, 1996 (No. 1-3305)

Merck  &  Co.,  Inc.  Plan  for  Deferred  Payment  of  Directors’  Compensation  (effective  as  amended  and  restated  as  of  December  1,
2010) — Incorporated by reference to Merck & Co., Inc.’s Form 10-K Annual Report for the fiscal year ended December 31, 2010 (No. 1-
6571)

Distribution agreement between Schering-Plough and Centocor, Inc., dated April 3, 1998 — Incorporated by reference to Exhibit 10(u) to
Schering-Plough’s Amended 10-K for the year ended December 31, 2003, filed May 3, 2004 (No. 1-6571)†

Amendment Agreement to the Distribution Agreement between Centocor, Inc., CAN Development, LLC, and Schering-Plough (Ireland)
Company — Incorporated by reference to Exhibit 10.1 to Schering-Plough’s Current Report on Form 8-K filed December 21, 2007 (No. 1-
6571)†

Accelerated Share Purchase Agreement between Merck & Co., Inc. and Goldman, Sachs & Co., dated May 20, 2013 — Incorporated by
reference to Merck & Co., Inc.’s Form 10-Q Quarterly Report for the period ended June 30, 2013 (No. 1-6571)

  —   Computation of Ratios of Earnings to Fixed Charges

  —   Subsidiaries of Merck & Co., Inc.

  —   Consent of Independent Registered Public Accounting Firm

  —   Power of Attorney

  —   Certified Resolution of Board of Directors

  —   Rule 13a-14(a)/15d-14(a) Certification of Chief Executive Officer

  —   Rule 13a-14(a)/15d-14(a) Certification of Chief Financial Officer

  —   Section 1350 Certification of Chief Executive Officer

  —   Section 1350 Certification of Chief Financial Officer

—

The following materials from Merck & Co., Inc.’s Annual Report on Form 10-K for the fiscal year ended December 31, 2016, formatted in
XBRL  (Extensible  Business  Reporting  Language):  (i)  the  Consolidated  Statement  of  Income,  (ii)  the  Consolidated  Statement  of
Comprehensive Income, (iii) the Consolidated Balance Sheet, (iv) the Consolidated Statement of Equity, (v) the Consolidated Statement of
Cash Flows, and (vi) Notes to Consolidated Financial Statements.

*
†

Management
contract
or
compensatory
plan
or
arrangement.
Certain
portions
of
the
exhibit
have
been
omitted
pursuant
to
a
request
for
confidential
treatment.
The
non-public
information
has
been
filed
separately
with
the
Securities
and
Exchange
Commission
pursuant
to
rule
24b-2
under
the
Securities
Exchange
Act
of
1934,
as
amended.

139

   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
                
EXHIBIT 10.2

MERCK & CO., INC.

DEFERRAL PROGRAM
Including the Base Salary Deferral Plan

( Amended and Restated effective December 1, 2015 )

TABLE OF CONTENTS

Article I

Article II

Administration

Eligibility

Article III

Contributions to a Deferred Compensation Account

Article IV

Valuation of Deferred Compensation Accounts

Article V

Redesignation within a Deferred Compensation Account

Article VI

Distribution of Deferred Compensation Accounts

Article VII

Deductions from Distributions

Article VIII

Beneficiary Designations

Article IX

Amendments

Article X

No Assignment, Alienation

Article XI

Claims and Appeal Procedures

Article XII

Domestic Relations Orders

Article XII

Effective Date

Schedule I

Deferral Program Investment Alternatives

Schedule II

Special Provisions Applicable to Medco Health Employees

Page

1

1

2

5

8

9

10

11

11

11

11

12

13

14

15

        
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
MERCK & CO. INC.
DEFERRAL PROGRAM

The Deferral Program (the “Program”) is an unfunded arrangement intended to permit a select group of management employees of

Merck & Co., Inc. (“Merck”) or its affiliate to defer income that would otherwise be immediately payable to them as annual base salary or
under various incentive plans of Merck or its affiliates.

The Program is a “nonqualified deferred compensation plan” within the meaning of Section 409A (“Section 409A”) of the Internal

Revenue Code of 1986, as amended (the “Code”).

Anything in the Program to the contrary notwithstanding, the Program shall be interpreted and operated in compliance with the

requirements, if any, of Section 409A of the Code (or any successor thereto) as in effect from time to time, including but not limited to
applicable regulations of the U.S. Department of the Treasury or Internal Revenue Service and Treas. Reg. Secs. 1.409A-1 through 1.409A-6
or any successor thereto. Any payment called for under the Program as of a designated date shall be made no later than a date within the same
tax year of a participant, or by March 15 of the following year, if later (or such other dates as specified in Treas. Reg. Sec. 1.409A 3(d) or any
successor thereto); provided further, that the participant is not permitted to change the taxable year of payment except in accordance with
Article VI, Section F and Section 409A of the Code. Where the Program’s obligation to pay is unclear Merck, including a dispute about who
is the proper beneficiary of a participant who dies, payment shall be made as soon as administratively feasible after the Program’s obligation
becomes clear and at a time permitted by Treas. Reg. Sec. 1.409A-3(g)(4) or any successor thereto.

I. ADMINISTRATION

The Program is administered by the Compensation and Benefits Committee (“Committee”) of the Merck Board of Directors. The

Committee is composed of non‑employee directors only. The Committee shall have responsibility for determining which investments will be
available under the Program, and those investments shall be listed on Schedule I hereto. The Committee shall make all decisions affecting the
timing, price or amount of any and all of the Deferred Compensation of Section 16 Officers, as defined below, other than rules of general
application to all Participants, but may otherwise delegate any of its authority under this Program.

II. ELIGIBILITY

A.     Eligible Employees

1.



Eligible
Employees
in
General.
An employee of Merck or its controlled group (the “Company Group”) is eligible to participate in
the Program (an “Eligible Employee”) for a deferral of awards under the Annual Incentive Plan, Executive Incentive Plan or Sales
Incentive Plan or similar plans as approved from time to time by the Committee if (a) his or her annual base compensation is at least
$200,000 according to the Company payroll system applicable to him or her on November 1 of the year in which the election is made
(or, for a newly hired employee only, his or her annualized base compensation is at least $200,000 when employment begins) (b) he or
she is a regular full- or part-time employee of the Company or an affiliate who is eligible to make contributions to the Merck U.S.
Savings Plan and (c) he or she is based in the U.S. and subject to U.S. income taxes.

2.



Base
Salary
Deferral.
Eligible Employees who are Merck officers (“Section 16 Officers”) as defined in Rule 16(a)-1(f) of the
Securities Exchange Act of 1934 as amended

(the “Exchange Act”) are also eligible to defer under the Base Salary Deferral Plan. The Base Salary Deferred Plan as described below
is a component of the Deferral Program contained entirely herein and is intended to permit eligible Section 16 Officers to defer a
portion of their base salaries.

3.



Company
Contribution
Eligible
Employees.
An employee of the Company Group is eligible for Company Contribution Credits as
described in Section D of Article III if (a) he or she is a regular full- or part-time employee of the Company or an affiliate who is
eligible to make contributions to the Merck U.S. Savings Plan (b) he or she is based in the U.S. and subject to U.S. income taxes and
(c) the employee’s base and Annual Incentive Plan, Executive Incentive Plan or Sales Incentive Plan compensation exceeds the
applicable Code Section 401(a)(17) limit for that year (a “Company Contribution Eligible Employee”).

4.



Sign-On
Bonus
Employees.
Effective December 1, 2015, an employee newly hired into the Company Group in Band 700 or 800
may, within 30 days of the date employment commences,elect to defer a sign-on bonus for compensation paid for services performed
after such election.

5.



Discretion
Reserved.
Notwithstanding the foregoing, the Committee may permit, or refuse to permit, any member of a select group
of management or highly compensated employees to participate in this Program other than excluded individuals described in Section B
below.

B.     Excluded Individuals. Anything in the Program to the contrary notwithstanding, the following are not eligible to make an election or
receive a Company Contribution Credit (as described below): any person who (1) is an independent contractor for the Company Group; (2)
agrees or has agreed that he or she is an independent contractor for the Company Group; (3) has an agreement or understanding with any
member of the Company Group that such person is not an employee, even if that person previously has been an employee; or (4) is employed
by a temporary or other employment agency, regardless of the amount of control, supervision or training provided by the Company Group.
The foregoing exclusion applies even if a court, agency or other authority rules that the person happens to be a common law employee of the
Company Group. Also excluded are individuals who are included in a unit of employees covered by a collective bargaining agreement
between employee representatives and one or more employers; provided, however, that such an employee may be an eligible employee
during the period he or she is not covered by a collective bargaining agreement and during which he or she otherwise is eligible to participate
according to Article II, Section A.

C.     Participation Continues. An eligible person who has made an election into the Program pursuant to Section A above or who is eligible
for Company Contribution Credits pursuant to Section D of Article III shall be a Participant for so long as he or she has an account balance.
No such person can make an election to defer unless he or she is then eligible pursuant to Article II, Section A. If a person has made an
election to defer but thereafter becomes ineligible to defer (for example, employment transfers to a position that is ineligible to participate in
the Merck U.S. Savings Plan), the election nonetheless will be given effect.

III. CONTRIBUTIONS TO DEFERRED COMPENSATION ACCOUNTS

Amounts contributed or deferred pursuant to this Article III are known as “Deferred Compensation” and will be credited to the

participant's “Deferred Compensation Account.”

2

Deferred Compensation shall be accounted for in one account regardless of the plan (e.g., Base Salary Deferral or incentive plan) under which
it was deferred, but a separate election to defer applies for each year for base salary, annual incentive, or grant of RSUs or PSUs, and records
shall show each separate election. Further, for purposes of modifications to a distribution schedule, each separate election is eligible for such
a modification. Only amounts described above may be deferred; stock option gains may not be deferred.

A.      Initial Election to Defer

To make an election to defer Base Salary, Annual Incentive Plans or Restricted Stock Units (“RSUs”) and Performance Share Units
(“PSUs”), an Eligible Employee must irrevocably elect to defer under the Program by the earlier of the time specified in Treas. Reg. Sec.
1.409A-2 or any successor thereto or:

1
. 



Base
Salary
Deferral
Plan
, prior to the end of the year preceding the year during which annual base salary exclusive of any
bonus or any other compensation or allowance paid by the Company Group (“Annual Base Salary”) will be earned. The amount that
may be deferred is

(a) Not less than 5 percent of Annual Base Salary and

(b) Not more than the lesser of

(1)    50 percent of Annual Base Salary or

(2)    The portion of the Participant’s Annual Base Salary that exceeds the amount determined under Section 401(a)(17) of

the Code

provided,
however,
that amounts may be expressed in relation to amounts that may be deducted by the Company Group under Section
162(m) of the Code.

2.



Annual
Incentive
Plans
(such as the Annual Incentive Plan and the Executive Incentive Plan), prior to the commencement of the
calendar year coincident with the performance year during which the bonus monies to be deferred will be earned (if the performance
year is not the calendar year, the election must be made prior to the first calendar year that includes any part of the performance year to
the extent required by Section 409A), provided
:

(a) A participant who is hired by the Company Group during a performance year may make an election, no later than the 30th

day from the participant’s date of hire, to defer bonus monies to be earned during such performance year, and

(b) The minimum that may be deferred in any year under this Section IV.A.2. is $3,000; provided, however, this minimum does

not apply for elections made during or after 2010.

3.



Annual
Grants
of
RSUs
and
PSUs
may be deferred prior to the commencement of the last year of the award period during which
they will be earned. Other RSUs and PSUs may not be deferred. After 2008, RSUs and PSUs for which the deferral election is made
after grant must be deferred in compliance with the rules applicable to re-deferral (as opposed to initial elections) under Section 409A
as described in Article VI, Section F. Deferrals of

3

RSUs and PSUs must be made initially into the Merck Common Stock fund and may not thereafter be reallocated into any other
investment alternative provided pursuant to Schedule I (a “Mutual Fund”). Effective November 1, 2010, no further elections of RSUs
or PSUs will be permitted, but elections made prior to that date will be given effect.

4.



Sign-on
Bonus
amounts for Sign-on Bonus Employees, no later than the 30th day from the participant’s first day of employment,
with respect to services performed after such election.

Notwithstanding the foregoing, a participant’s Deferral Election will be cancelled if he or she receives a hardship distribution from any

qualified savings plan with a 401(k) feature maintained by the Company Group if and only if such cancellation is required by applicable
regulation of the Internal Revenue Service. If a participant terminates employment or transfers to a class of employees that is ineligible to
make a deferral election after having made a deferral election, the election will nevertheless be effected. If the Company Group pays an
amount that it reasonably believes is or may be held to be a “substitute payment,” within the meaning of Treas. Reg. Sec. 1.409A-1(b)(9), for
an amount that would have been deferred pursuant to the foregoing, that substitute payment also will be deferred according to the
participant’s election.

B.      Initial Election of Distribution Schedule

1.



Timing
of
Election

The Eligible Employee must elect an initial distribution schedule when making the initial election pursuant to III.A., above.

2.



Distribution
Schedule

An Eligible Employee may elect to have payments begin (a) in a particular year (whether or not employment has then ended);
provided, however, this provision does not apply to Company Contributions or (b) in the year following the participant's “Separation
from Service” as defined below, or (c) up to 15 years subsequent to the participant’s Separation from Service. Separation from Service
means Separation from Service as defined in Treas. Reg. Sec. 1.409A-1(h) or any successor thereto and includes but is not limited to:
retirement; separation due to lack of work; voluntary resignation; or involuntary termination of employment. It does not include
termination of service due to death, transfer to another member of the Company Group or commencement of employment with a joint
venture (as described below). A participant may elect a lump sum or a schedule of annual installments, up to a maximum of 15 annual
installments.

3.



Manner
of
Elections

All elections under the Program shall be made with the Program’s designated record keeper (the “Record Keeper”) in the manner

and in accordance with the process approved by the Company’s head of Human Resources Department from time to time.

4.



Default
Designation

Where a Participant’s initial election of a distribution schedule is for any reason unclear to the Company (including but not
limited to where a Participant failed to elect when amounts will be distributed), the Participant shall be deemed to have elected to

4

receive distribution in a lump sum in the year following the year in which his or her Separation from Service occurs.

C.      Election of Investment Alternatives

The participant shall designate, in accordance with procedures established by the Company for such designation, the portion (in

multiples of 1 percent) of the Deferred Compensation to be allocated to any investment alternative available under this Program.

D.      Company Contribution Credits .

With respect to each Plan Year after 2012, for a Company Contribution Eligible Employee the Company shall make contribution
credits (“Company Contribution Credits”) to an account (the “Company Contribution Account”). The amount of the Company Contribution
Credits shall be equal to 4.5 percent of such Eligible Employee’s Compensation for the Plan Year that exceeds the limit set forth in Section
401(a)(17) of the Code for that year; provided, however, that for a Company Contribution Eligible Employee who is eligible for the
Transition Provisions of the Retirement Program as described in the Merck U.S. Savings Plan Summary Plan Description and apply to certain
legacy Schering Plough employees, the Company Contribution Credit shall be 5.0 percent for the period during which that Company
Contribution Eligible Employee is subject to the Transition Provisions (generally, the earlier of through 2019 or until employment
terminates). Company Contribution Credits shall be credited to the Participant’s Account on the same date on which the related employer
contributions are made to the tax-qualified savings plan in which the Company Contribution Eligible Employee participates or such other date
as the Committee shall determine.

IV. VALUATION OF DEFERRED COMPENSATION ACCOUNTS

The Deferral Program shall offer as investment alternatives (a) a fund of Merck Common Stock and (b) Mutual Funds.

A.     Merck Common Stock

1.




Initial
Crediting

The amount allocated to Merck Common Stock shall be used to determine the number of full and partial shares of Merck
Common Stock which such amount would purchase at the closing price of Merck Common Stock on the New York Stock Exchange
(“NYSE”) on the date cash payments of base salary, for amounts deferred under the Base Salary Deferral Plan, or incentive awards, for
amounts deferred under the various incentive plans, would otherwise be paid to the participant (the “Deferral Date”). The Company
shall credit the participant's Deferred Compensation Account with the number of full and partial shares of Merck Common Stock so
determined. However, at no time prior to the delivery of such shares shall any actual shares be purchased or earmarked for such
Account and the participant shall not have any of the rights of a shareholder with respect to shares credited to his/her Deferred
Compensation Account.

2.




Dividends

The Company shall credit the Participant's Deferred Compensation Account with the number of full and partial shares of Merck

Common Stock purchasable at the closing price

5

of Merck Common Stock on the NYSE as of the date each dividend is paid on the Common Stock, with the dividends that would have
been paid on the number of shares credited to such Account (including pro rata dividends on any partial share) had the shares so
credited then been issued and outstanding.

3.




Redesignations

The value of Merck Common Stock for purposes of redesignation shall be the closing price of Merck Common Stock on the

NYSE on the first day the NYSE is open after the request is received by the Record Keeper.

4.



Distributions

Distributions of Merck Common Stock will be valued at the closing price of Merck Common Stock on the NYSE on the

Distribution Date.

5.



Source
of
Shares

Shares of Merck Common Stock to be delivered under the provisions of this Program may be delivered by the Company from its
authorized but unissued shares of Common Stock or from Common Stock held in the treasury. The Company also may, in its sole and
nonreviewable discretion, purchase shares on public markets in order to make distributions under the Program.

6.



Adjustments

In the event of a reorganization, recapitalization, stock split, stock dividend, combination of shares, merger, consolidation, rights

offering or any other change in the corporate structure or shares of the Company, the number and kind of shares of Merck Common
Stock available under this Program or credited to participants’ Deferred Compensation Accounts shall be adjusted accordingly.

7.



Fair
Market
Value
of
Merck
Common
Stock

For purposes of valuation of Merck Common Stock, if Merck Common Stock is no longer traded on the NYSE, but is publicly

traded on any other exchange, references to NYSE shall mean such other exchange. If Merck Common Stock is not publicly traded and
if the Committee determines that a measurement of Merck Common Stock on any applicable date would not constitute fair market
value, then the Committee shall decide on the date and method to determine fair market value, which shall be in accord with any
requirements set forth under Section 409A or any successor thereto.

8.



Limits
on
Amount
of
Merck
Common
Stock

Beginning January 1, 2013, participants cannot rebalance their account balance so that after the account rebalance, more than

20% of the value of their account is in the Merck Common Stock Fund. In addition, participants cannot elect an exchange into the
Merck Common Stock Fund that will cause the balance in the Merck Common Stock Fund to exceed 20% of the total Account
Balance. Participants will not be required to exchange out of the Merck Company Stock Fund if the fund balance exceeds 20% of their
Account Balance, either through prior investment elections or relative fund performance.

6

B.     Mutual Funds

1.




Initial
Crediting

The amount allocated to each Mutual Fund shall be used to determine the number of full and partial Mutual Fund shares that such

amount would purchase at the closing net asset value of the Mutual Fund shares on the Deferral Date. The Company shall credit the
participant’s Deferred Compensation Account with the number of full and partial Mutual Fund shares so determined. However, no
actual Mutual Fund shares shall be purchased or earmarked for such Account, nor shall the participant have the rights of a shareholder
with respect to such Mutual Fund shares.

2.



Dividends

The Company shall credit the participant’s Deferred Compensation Account with the number of full and partial Mutual Fund
shares purchasable, at the closing net asset value of the Mutual Fund shares as of the date each dividend is paid on the Mutual Fund
shares, with the dividends that would have been paid on the number of shares credited to such Account (including pro rata dividends on
any partial share) had the shares then been owned by the participant for purposes of the above computation.

3.




Redesignations

The value of Mutual Fund shares for purposes of redesignation shall be the net asset value of such Mutual Fund at the close of

business on the first day the NYSE is open after the request is received by the Record Keeper.

4.



Distributions

Mutual Fund distributions will be valued based on the closing net asset value of the Mutual Fund shares on the Distribution Date

(as defined below).

5.



Adjustments

In the event of a reorganization, recapitalization, stock split, stock dividend, combination of shares, merger, consolidation, rights
offering or any other change in the corporate structure or shares of a Mutual Fund, the number and kind of shares of that Mutual Fund
credited to participants’ Deferred Compensation Accounts shall be adjusted accordingly.

6.




Default
Designation

Where a Participant’s designation of investment alternatives is for any reason not clear (including but not limited to where a

Participant failed to make such an election), the Participant shall be deemed to have designated deferrals into the life cycle, target or
similar Mutual Fund with a target date closest to the date the Participant attains age 65.

V. REDESIGNATION WITHIN A DEFERRED COMPENSATION ACCOUNT

A.     Basic Redesignation Rules

7

A  participant,  or  the  beneficiary  or  legal  representative  of  a  deceased  participant,  may  redesignate  amounts  credited  to  a  Deferred

Compensation Account among the investments available under this Program in accordance with the following rules:

1.



Eligible
Participants
– All Participants and beneficiaries may redesignate.

2.



Frequency
and
Timing
– Redesignation shall be effective as of 4:00 p.m. E.T. on the first day the NYSE is open after the request is
received by the Recordkeeper.

3.     Amount
and
Extent
of
Redesignation
– Redesignation must be in 1% multiples of the investment from which redesignation is
being made.

4.     Beneficiaries
or
Legal
Representatives
– The beneficiary or legal representative of a deceased participant may redesignate subject
to the same rules as participants.

B.     Special Rules for Redesignation Into or Out of Merck Common Stock

1.



Frequency
and
Timing

For Section 16 Officers, redesignations may only be made into or out of Merck Common Stock during any window period

established by the Company from time-to-time. Redesignation out of Merck Common Stock is restricted to amounts held in Merck
Common Stock for longer than six months. Redesignation shall not be permitted to the extent the Company is aware of a transaction
that the Company reasonably believes may cause a violation under Section 16 of the Exchange Act.

2.



Material,
Nonpublic
Information

The Committee, in its sole discretion and with advice of counsel, at any time may rescind a redesignation into or out of Merck

Common Stock if such redesignation was made by a participant who, (a) at the time of the redesignation was in the possession of
material, nonpublic information with respect to the Company; and (b) in the Committee's estimation benefited from such information in
the timing of his/her redesignation. The Committee's determination shall be final and binding. In the event of such rescission, the
participant's Deferred Compensation Account shall be returned to a status as though such redesignation had not occurred.
Notwithstanding the above, the Committee shall not rescind a redesignation if the facts were reviewed by the participant with the
General Counsel of the Company or a designee prior to the redesignation and if the General Counsel or designee had concluded that
such participant was not in possession of adverse material, nonpublic information.

8

C.     Conversion of Common Stock Accounts

The Committee may, in its sole discretion, convert all of the shares of Merck Common Stock allocated to a participant's Deferred
Compensation Account in the manner provided below where a position which a participant has taken or wishes to take is, in the opinion
of the Committee, such as would make uncertain the propriety of the participant's having a continued interest in Merck Common Stock.
The date of conversion shall be the date of commencement of such other employment or the date of the Committee's action, whichever
is later.

Conversion shall be from an expression of value in shares of Merck Common Stock in the participant's Deferred Compensation

Account to an expression of value in United States dollars in another available investment. The value of the Merck Common Stock
shall be based upon its closing price on the NYSE on the date of conversion or if no trading took place on such day, the next business
day on which trading took place. Any conversion under this Section shall be irrevocable and absolute.

VI. DISTRIBUTION OF DEFERRED COMPENSATION ACCOUNTS

Distribution of Deferred Compensation Accounts shall be made in accordance with the participant's distribution schedule pro rata by

investment. Distributions from Merck Common Stock will be made in shares, with cash payable for any partial share, subject to the
limitations set forth in Article IV, Section A.5. For Section 16 Officers, distribution of amounts in Merck Common Stock is also restricted to
amounts held in Merck Common Stock for longer than six months. Distributions from Mutual Funds will be in cash. Distributions will be
valued on the Distribution Date (i.e, the 15 th day of the distribution month or, if such day is not a business day, the next business day) and
paid as soon thereafter as practicable. Distribution months shall mean only January, April, July, and October.

A.      Separation from Service

1.



Distribution
Commences

Upon a participant's Separation from Service, Deferred Compensation Accounts will commence in accordance with the
participant's previously elected schedule. If a participant incurs a Separation from Service and thereafter is rehired by the Company
Group, such rehire shall be ignored and distributions shall commence notwithstanding such rehire; provided, however, that if the
participant is eligible and elects to make additional deferrals, those additional deferrals may be payable in relation to the subsequent
Separation from Service.

2.



Specified
Employee

Anything in the Program to the contrary notwithstanding, to the extent required by Section 409A, distributions on account of
a Separation from Service to a “Specified Employee,” as such term is defined in Section 409A, may not be made before the date which
is 6 months after the date of Separation from Service (or, if earlier, the date of death of the employee). Where a payment would have
been made to a Specified Employee within such 6‑month period and such payment is one of a series of annual payments, the first
payment shall be delayed as necessary and the remaining payments

9

shall be made according to their elected schedule notwithstanding such delay, such that two otherwise annual payments may be made in
a single year.

B.      Death

In the event of a participant's death, whether or not distributions have commenced pursuant to a Participant’s election, Deferred

Compensation Accounts under this Program will be distributed to the participant’s beneficiary or estate in a lump sum as soon as
administratively feasible and in any event by March 15 of the year following death (except as otherwise permitted by Treas. Reg. Sec.
1.409A-3(g)(4) or any successor thereto).

C.     Automatic Distribution

Except as provided in Schedule II, if a participant incurs a Separation from Service and has a Deferred Compensation Account valued

at less than $125,000 on the first Distribution Date thereafter, the Deferred Compensation Account shall be distributed in a lump sum as soon
as administratively feasible following such termination and in any event by March 15 of the year following such termination (except as
otherwise permitted by Treas. Reg. Sec. 1.409A-3(g)(4) or any successor thereto).

D.     Joint Venture Service

A participant’s termination of employment in order to take a position with a joint venture or other business entity in which the
Company shall directly or indirectly own 50 percent or more of the outstanding voting or other ownership interest shall not be considered a
Separation from Service.

E.     Hardship Distributions

The Committee shall distribute a participant's Deferred Compensation Account, if and to the extent a participant applies to receive a
distribution due to an Unforeseeable Emergency as defined in Treas. Reg. Sec. 1.409A-3(i). A participant wishing a hardship distribution
must provide the Committee or its delegate with sufficient evidence to prove compliance with Treas. Reg. Sec. 1.409A-3(i).

F.     Modifications to Distribution Schedule

After making an initial election, a participant may elect to change his or her distribution schedule from time to time, provided,
however, such changes shall not be permitted if it might reasonably be expected to cause a “plan failure” as such term is used in Section 409A
of the Code. For example, except as otherwise permitted by Section 409A, no election may permit an acceleration of a distribution, or may
become effective earlier than one year from the date it is made, or may permit an additional deferral after the initial election unless it results
in a deferral of at least five additional years from the previously schedule distribution date. For purposes of this provision, where a participant
has elected to receive a distribution as a series of payments, such series shall be considered a single distribution for purposes of Section 409A.
Any such elections shall be made with the Record Keeper in the manner and in accordance with the process approved by the Company’s’
head of Human Resources Department from time to time.

10

VII. DEDUCTIONS FROM DISTRIBUTIONS

The Company will deduct from each distribution amounts required to be withheld for income, Social Security and other tax purposes.

Such withholding will be done on a pro rata basis per investment. The Company may also deduct any amounts the participant owes the
Company Group for any reason.

VIII. BENEFICIARY DESIGNATIONS

A participant may designate a beneficiary to receive his/her Deferred Compensation Account upon the participant's death. If the
beneficiary predeceases the participant or if the participant does not name a beneficiary, the participant's Deferred Compensation Account
will be distributed to the participant's estate. Such designation shall be in the form designated by the Company’s head of Human Resources
Department from time to time, and it must be received by the Company’s Human Resources Department prior to such participant’s death to
be valid.

IX. AMENDMENTS

The Committee may amend or terminate this Program at any time. However, such amendment may not retroactively reduce a participant’s
Deferred Compensation Account.

For two years following a change in control of the Company (as such term is defined in the Change in Control Separation Benefits

Plan) the material terms of the Program (including terms relating to eligibility, benefit calculation, benefit accrual, cost to participants,
subsidies and rates of employee contributions) may not be modified in a manner that is materially adverse to individuals who participated
immediately before the change in control. The Company will pay the legal fees and expenses of any participant that prevails on his or her
claim for relief in an action regarding an impermissible amendment to the Program (other than ordinary claims for benefits) or, if applicable,
in an action regarding restrictive covenants applicable to the participant.

X. NO ASSIGNMENT, ALIENATION

Except as provided in Article XII, no benefit payable under this Program shall be subject in any manner to anticipation, alienation, sale,
transfer, assignment, pledge, encumbrance, or charge, and any attempt to so anticipate, alienate, sell, transfer, assign, pledge, encumber or
charge the same shall be void, except as specifically provided in this Plan. No such benefit shall be in any manner liable for or subject to the
debts, contracts, liabilities, encroachments or torts of any participant or beneficiary.

A.     Determination of Claim

XI. CLAIMS AND APPEALS PROCEDURE

An Employee or his/her authorized representative may present a claim for benefits to the Executive Director, Compensation and

Benefit Administration or the successor thereto (the “Director”) or such other person as the Committee may determine to handle claims and
appeals from the Program. The Director will make all determinations as to the Employee's claim for benefits under the Program. If the
Director grants a claim, benefits payable under the Program will be paid to the Employee as soon as feasible thereafter. If the Director denies
in whole or part

11

any claim for a benefit under the Program, he/she will furnish the claimant with notice of the decision not later than 90 days after receipt of
the claim. If special circumstances require an extension of time for processing the claim, the Director will provide a written notice of the
extension during the initial 90-day period, in which case a decision will be rendered not more than 180 days after receipt of the claim. The
written notice which the Director will provide to every claimant who is denied a claim for benefits will set forth in a manner calculated to be
understood by the claimant:

1.
    the specific reason or reasons for the denial;

2.
    specific reference to pertinent Program provisions on which the denial is based;

3.
    a description of any additional material or information necessary for the claimant to perfect the claim and an explanation of why

such material or information is necessary; and

4.
    appropriate information as to the steps to be taken if the claimant wishes to submit his/her claim for review.

B.     Appeal of Denied Claim

A claimant or his/her authorized representative may request a review of the denied claim by the Committee. Such request will be
made in writing and will be presented to the Committee not more than 60 days after receipt by the claimant of written notification of the
denial of the claim. The Committee will render its decision on review not later than 60 days after receipt of the claimant's request for review,
unless special circumstances require an extension of time, in which case a decision will be rendered as soon as possible but not later than 120
days after receipt of the request for review. The decision on review will be in writing and will include specific reasons for the decision.

C.    ERISA Section 503

It is intended that the claims procedure of the Program be administered in accordance with regulations of the Department of Labor

issued under ERISA Section 503.

D.    Limitation of Action

No action at law or in equity (an “Action”) shall be maintained by a Participant, Beneficiary or other individual, entity or party
(including but not limited to a person determined to be other than a Participant or Beneficiary) (a “Claimant”) against the Program, the
Company Group, their affiliates, agents, fiduciaries, officers, directors, employees, successors, assigns or plans (collectively, the “Program
Group”) unless (a) the Claimant has presented every basis or argument in support of the Action (a “Claim”) in strict accordance with both
Sections A and B of this Article X which Claim is denied in whole or in part and (b) unless the Action is commenced no later than one year
after the date the Company Group provides notice of the adverse decision pursuant to Section B. Where the Company Group puts the
Claimant on notice of the Company Group’s or Program’s intention with respect to the basis or argument in support of the Action, the
Claimant must commence the process described in Section A of this Article X within one year of such notice. A “Claim” includes but is not
limited to a claim for benefits or for a purported or actual fiduciary breach by any member of the Program Group. The Limitation of Action
pursuant to this Article may only be tolled by a writing executed by the Director.

12

XII. DOMESTIC RELATIONS ORDERS

Notwithstanding any other provision of this Program to the contrary, the creation, assignment or recognition of a right to any benefit

payable with respect to a Participant pursuant to a “domestic relations order” (as hereinafter defined) is not prohibited. In the event a right to a
benefit hereunder is established pursuant to a domestic relations order, any benefit otherwise payable to the Participant or his/her beneficiary
hereunder shall be appropriately reduced to reflect the effect of the qualified domestic relations order. For purposes of the Program,
“Alternate Payee” means a person who would be an alternate payee under Section 414(p)(8) of the Code if the Program were subject to
Section 401(a) of the Code. A “domestic relations order” means any judgment, decree or order within the meaning of Section 414(p),
including the approval of a property settlement agreement, provided that:

1.
the order relates to the provision of child support, alimony or marital property rights and is made pursuant to state domestic

relations or community property laws;

2.
the order creates or recognizes the existence of an Alternate Payee's right to receive all or a portion of the Participant's Account

Balance;

3.
the order specifies the name and last known mailing address of the Participant and each Alternate Payee covered by the order;

4.
the order precisely and unambiguously specifies the amount or percentage of the Participant's Account Balance to be paid to each

Alternate Payee or the manner in which the amount or percentage is to be determined;

5.
the order clearly specifies that it applies to this Program;

6.
the order does not require this Program to provide any type of benefits or form of benefits not otherwise provided under this

Program; and

7.
the order provides that the Alternate Payee shall receive his or her interest in the Program in a lump sum as soon as

administratively feasible following determination by the Company’s legal department (or its delegate) that the order satisfies the requirements
of this Article.

This amendment and restatement of this Program shall be effective as of December 1, 2015.

XIII. EFFECTIVE DATE

13

IN WITNESS WHEREOF, the Merck Oversight Committee has caused this instrument to be executed by the Executive Director,

Legal, Global Benefits & Executive Compensation, as of the 1 st day of December, 2015.

MERCK & CO., INC.

By /s/ Bruce Ellis
Bruce W. Ellis
Executive Director, Legal
Global Benefits & Executive Compensation

14

 
 
 
 
 
 
 
 
 
 
 
 
SCHEDULE I

DEFERRAL PROGRAM INVESTMENT ALTERNATIVES

“ Mutual Funds” shall mean all of the same investment alternatives offered under the Merck U.S. Savings Plan as in effect from time

to time, excluding participant loans and Merck Common Stock.

The Merck Common Stock fund offered under the Deferral Program shall be measured as if it were invested 100% in Merck

Common Stock with dividends reinvested in additional shares of Merck Common Stock.

15

SCHEDULE II

SPECIAL PROVISIONS APPLICABLE TO
MEDCO HEALTH EMPLOYEES
(Approved July 23, 2002)

DEFINITIONS

Medco Health – Medco Health Solutions, Inc.

Medco Health Employee – A participant who is (i) employed by Medco Health prior to the Spin-Off or (ii) employed by Merck prior to the
Spin-Off and expected to be employed by Medco Health prior to or as of the Spin-Off.

Separated Medco Health Employee – A participant in the Deferral Program who is employed by Medco Health as of the date of the Spin-Off
and is considered to have terminated employment with the Company as a result of the Spin-Off.

Spin-Off – The distribution by Merck to its shareholders of the equity securities of Medco Health. The Spin-Off will be a divestiture for
purposes of the Deferral Program.

SPECIAL PROVISIONS

Notwithstanding anything to the contrary in Article VI, Section C of the Deferral Program, the Deferred Compensation Account of each
Separated Medco Health Employee shall be paid out in accordance with Article VI, Section D, without regard to the $125,000 threshold set
forth in Section C.

16

 
TERMS FOR
2016 NON-QUALIFIED STOCK OPTION (NQSO) GRANTS
UNDER THE MERCK & CO., INC. 2010 INCENTIVE STOCK PLAN

EXHIBIT 10.19

This is a summary of the terms applicable to the stock option specified in this document. Different terms may apply to any prior or future
stock option.

Grant Type:

Option Price:

Grant Date:

Expiration Date:

Vesting Date

May 10, 2017

May 10, 2018

May 10, 2019

NQSO - Annual

$54.68

May 10, 2016

May 9, 2026

Portion that Vests

First: 33.333%

Second: 33.333%

Balance

I. GENERAL INFORMATION

This stock option becomes exercisable in equal installments (subject to a
rounding process) on the Vesting Dates indicated in the accompanying box.
This stock option expires on its Expiration Date, which is the day before the
tenth anniversary of the Grant Date. If your employment with the Company is
terminated, your right to exercise this stock option will be determined
according to the terms in Section II.

Eligibility: Eligibility for grants is determined under the Merck & Co., Inc.
2010 Incentive Stock Plan for employees of the Company, its subsidiaries,
its affiliates or its joint ventures if designated by the Compensation and
Benefits Committee of Merck’s Board of Directors, or its delegate (the
“Committee”).

Subject to Recoupment : For employees in Band 600 and above, this
Stock Option Award will be subject to recoupment in the event of certain
violations of Company policy in accordance with the Company’s policy for
Recoupment of Compensation for Compliance Violations, as set forth in
Appendix A (as may be amended from time to time).

II. TERMINATION OF EMPLOYMENT

A. General Rule. If your employment is terminated for any reason other than
those specified in the following paragraphs, the portion of this stock option
that is unvested will expire on the date your employment ends; the portion of
this stock option that is vested will expire unless exercised before the New
York Stock Exchange closes (the “Close of Business”) on the day before the
same day of the third month (“Within Three Months”) after the date of the
termination (but in no event after the expiration of the Option Period). Close
of Business for any day on which the New York Stock Exchange is not open
means the close of business prior to that date when the Exchange is open.
Where there is no corresponding day of a month, the last day of the month is
deemed to be the same day as a later day (e.g., November 28, 29 and 30 all
correspond to February 28 in non leap years). If you are rehired by the
Company or JV, this option nevertheless will expire unless exercised Within
Three Months, or the original Expiration Date if earlier.

B. Retirement. If you retire from service with the Company the portion of this
stock option that would have become exercisable according to its original
schedule within one year of the date your employment terminates will vest
and become

exercisable on its applicable Vesting Date and the remainder will expire
immediately. Whether already vested on the date your employment
terminates or vested as a result of such retirement, this option will expire on
the earlier of (a) the day before the fifth anniversary of the termination date
or (b) its original Expiration Date. For grantees who are employed in the
U.S., “retirement” means a termination of employment after attaining the
earliest of (a) age 55 with at least 10 years of service (b) such age and
service that provides eligibility for subsidized retiree medical coverage or (c)
age 65 without regard to years of service. For other grantees, “retirement” is
determined by the Company. If your employment is terminated as described
in this paragraph and you are later rehired by the Company or JV, this option
nevertheless will expire according to this paragraph notwithstanding such
rehire.

C. Involuntary Termination. If your employment is terminated by the
Company and the Company determines that such termination was
involuntary, including the result of a restructuring or job elimination, but
excluding non-performance of your duties and the reasons listed under
paragraphs B or D through H, the portion of this stock option that is unvested
will expire on the date your employment ends; the portion of this stock option
that is vested will expire on the day before the one year anniversary of the
date your employment ends, but in no event later than the original Expiration
Date. If your employment is terminated as described in this paragraph and
you are later rehired by the Company or JV, this option nevertheless will
expire according to this paragraph notwithstanding such rehire.

D. Sale. If your employment is terminated and the Company determines that
such termination resulted from the sale of your subsidiary, division or joint
venture, the following portion of this stock option award will vest and become
exercisable immediately upon such termination: one-third if employment
terminates on or after the Grant Date but before the first anniversary thereof;
and all if employment terminates on or after the first anniversary of the Grant
Date. Whether already vested on the date your employment terminates or
vested as a result of such sale, this stock option will expire the day before
the first anniversary of the date your employment with the Company ends,
but in no event later than the original Expiration Date. Notwithstanding the
foregoing, the Committee may determine, for purposes of this stock option
grant, whether employment with an entity that is established from the
Company’s spin off, split off, split up or distribution of equity securities in
connection with that entity constitutes a termination of employment, and may
make adjustments, if any, as it deems appropriate, at the time of the
distribution of such equity securities, in the kind and/or number of shares
subject to this option, and/or in the option price of such option. If your
employment is terminated as described in this paragraph and you are later
rehired by the Company or JV, this option nevertheless will expire according
to this paragraph notwithstanding such rehire.

E. Misconduct. If your employment is terminated as a result of your
deliberate, willful or gross misconduct, this stock option

 
 
 
(whether vested or unvested) will expire immediately upon your receipt of
notice of such termination.

F. Death. If your employment terminates as a result of your death, the
portion of this stock option that is unvested will vest immediately upon your
death. Whether already vested on the date of your death or vested as a
result of your death, this stock option will expire on the day before the first
anniversary of your death, even if such date is later than the Original
Expiration date. This stock option will expire on such earlier date than
otherwise specified in this paragraph as may be required under applicable
non-U.S. law (e.g., in France, six months from the date of death). If you die
while any portion of this stock option remains outstanding, but after your
employment terminates for the reasons listed under paragraphs B, C, D, G
or H of this section, the portion that remains outstanding after such
employment termination will become immediately exercisable and will
continue to be exercisable until the expiration date prescribed in paragraph
B, C, D, G or H as applicable (and at least a year from your death in those
jurisdictions where such extension is required by law).

G. Disability. If your employment is terminated and the Company
determines that such termination resulted from your inability to perform the
material duties of your role by reason of a physical or mental infirmity that is
expected to last for at least six months or to result in your death, whether or
not you are eligible for disability benefits from any applicable disability
program, then this stock option will continue to become exercisable on
applicable Vesting Dates and will expire on the earlier of (a) the day before
the fifth anniversary of the day your employment terminates and (b) its
original Expiration Date. If your employment is terminated as described in
this paragraph and you are later rehired by the Company or JV, this option
nevertheless will expire according to this paragraph notwithstanding such
rehire.

H. Change in Control. If the Company involuntarily terminates your
employment without Cause before the second anniversary after the closing
of a change in control, each unvested Stock Option that is outstanding
immediately prior to the change in control will immediately become fully
vested and exercisable. All options, including options vested prior to such
time, will expire on the day before the fifth anniversary of the termination of
your employment following a change in control (but not beyond the
Expiration Date). This extended exercise period does not apply in the case
of termination by reasons of retirement, involuntary termination, sale,
misconduct, death or disability, as described in paragraphs B, D, E, F and G
above or termination prior to a change in control. If this stock option does not
remain outstanding following the change in control and is not converted into
a successor stock option, then you will be entitled to receive cash for this
option in an amount at least equal to the difference between the price paid to
stockholders in the change in control and the Option Price of this stock
option. A "change in control" has the same meaning that it has under the
Merck & Co., Inc. Change in Control Separation Benefits Plan (excluding an
MSD Change in Control).

I. Joint Venture. Employment with a joint venture or other entity in which the
Company has determined that it has a significant business or ownership
interest (a “JV”) is not considered termination of employment for purposes of
this stock option. If you transfer employment from the Company to a JV or
from a JV to the Company, such employment must be

approved by, and contiguous with employment by, the Company or the JV.
The terms set out in paragraphs A through H above apply to this stock option
while the option holder is employed by the JV.

III. TRANSFERABILITY

This stock option is not transferable and may not be assigned or otherwise
transferred except, under specific terms, by executives who hold or who
retired within the prior 12 months from a Section 16 officer position.

IV. ADMINISTRATION

The Committee is responsible for construing and interpreting this grant,
including the right to construe disputed or doubtful plan provisions, and may
establish, amend and construe such rules and regulations as it may deem
necessary or desirable for the proper administration of this grant. Any
decision or action taken or to be taken by the Committee, arising out of or in
connection with the construction, administration, interpretation and effect of
this grant shall, to the maximum extent permitted by applicable law, be within
its absolute discretion (except as otherwise specifically provided herein) and
shall be final, binding and conclusive upon the Company, all eligible
employees and any person claiming under or through any eligible employee.
All determinations by the Committee including, without limitation,
determinations of the eligible employees, the form, amount and timing of
incentives, the terms and provisions of incentives and the writings
evidencing incentives, need not be uniform and may be made selectively
among eligible employees who receive, or are eligible to receive, Incentives
hereunder, whether or not such eligible employees are similarly situated.

V. GRANTS NOT PART OF EMPLOYMENT CONTRACT

Notwithstanding reference to grants of incentives in letters offering
employment or in specific employment agreements, incentives do not
constitute part of any employment contract between the Company or JV and
the grantee, whether the employment contract arises as a matter of
agreement or applicable law. The value of any grant or of the proceeds of
any exercise of Incentives are not included in calculating compensation for
purposes of pension payments, separation pay, termination indemnities or
other similar payments due upon termination of employment.

This stock option is subject to the provisions of the 2010 Incentive
Stock Plan. For further information regarding your stock options, you may
access the Merck Global Long-Term Incentives homepage via
http://onemerck.com

Unless you notify the Company in writing that you wish to refuse this grant
within 60 days of the Grant Date, you will be deemed to acknowledge that you
have read, understood and agree to all of the terms, conditions and
provisions of this document and the Merck & Co., Inc. 2010 Incentive Stock
Plan. If you wish to reject this grant, you must send your written notice of
rejection to the Company at:

Attention: Global Executive Compensation and Benefits
Merck & Co., Inc.
2000 Galloping Hill Road, Building K-1
Kenilworth, New Jersey, U.S.A. 07033

 
Appendix A
Recoupment of Compensation for Compliance Violations

POLICIES AND PROCEDURES
Policy
It is the policy of the Compensation and Benefits Committee of the Board of
Directors (the “Committee”) that the Committee will exercise its discretion to
determine whether to seek Recoupment of any bonus and/or other incentive
compensation paid or awarded to an Affected Employee with respect to any
performance period beginning after December 31, 2013, where it
determines, in consultation with the Audit Committee, that: a) the Affected
Employee engaged in misconduct, or failed to reasonably supervise an
employee who engaged in misconduct, that resulted in a Material Policy
Violation relating to the research, development, manufacturing, sales, or
marketing of Company products; and b) the Committee concludes that the
Material Policy Violation caused Significant Harm to the Company, as those
terms are defined in this policy. The Committee’s exercise of its discretion
may take into account any considerations determined by the Committee to
be relevant.

Definitions
1. “Recoupment” is defined to include any and all of the following actions to
the extent permitted by law: (a) reducing the amount of a current or future
bonus or other cash or non-cash incentive compensation award, (b)
requiring reimbursement of a bonus or other cash-based incentive
compensation award paid with respect to the most recently completed
performance period, (c) cancelling all or a portion of a future-vesting equity
award, (d) cancelling all or a portion of an equity award that vested within the
previous twelve-month period, (e) requiring return of shares paid upon
vesting and/or reimbursement of any proceeds received from the sale of an
equity award, in each case that vested within the previous twelve-month
period, and (f) any other method of reducing the total compensation paid to
an employee for any prior twelve-month period or any current or future
period.

2. A “Material Policy Violation” is defined as a material violation of a
Company policy relating to the research, development, manufacturing, sales,
or marketing of Company products.

3. An “Affected Employee” is an employee in Band 600 or higher who (i)
engaged in misconduct that results in a Material Policy Violation; or (ii) failed
in his or her supervisory responsibilities to reasonably manage or monitor
the conduct of an employee who engaged in misconduct that results in a
Material Policy Violation.

4. “Significant Harm” means a significant negative impact on the Company’s
financial operating results or reputation.

Procedures
1. The Committee, acting in consultation with the Audit Committee, shall
administer this policy and have full discretion to interpret and to make any
and all determinations under this policy, subject to the approval of the full
Board of Directors in the case of a determination to seek or waive
Recoupment from the Chief Executive Officer.

2. The General Counsel, in consultation with the Chief Ethics and
Compliance Officer and the Executive Vice President, Human Resources, is
responsible for determining whether to

refer a matter to the Committee for review under this policy and for assisting
the Committee with its review. The Committee may consult with other Board
Committees and any external or internal advisors as it deems appropriate.

3. If the Committee, acting in consultation with the Audit Committee,
determines that there is a basis for seeking
Recoupment under this policy, the Committee shall exercise its discretion to
determine for each Affected Employee, on an individual basis, whether, and
to what extent and in which manner, to seek Recoupment.

4. In exercising its discretion, the Committee may take into consideration, as
it deems appropriate, all of the facts and circumstances of the particular
matter and the general interests of the Company.

Delegation to Management for Certain Recoupment Decisions
The Committee hereby delegates to the Chief Executive Officer (who may
further delegate as he deems appropriate) the authority to administer this
policy and to make any and all decisions under it regarding Affected
Employees who are not Section 16 Officers of the Company. Section 16
Officers are employees of the Company who are subject to Section 16 of the
Securities Exchange Act of 1934. Management shall report to the Committee
on any affirmative decisions to seek Recoupment pursuant to this
delegation.

Disclosure of Recoupment Decisions
The Company will comply with all applicable securities laws and regulations,
including Securities and Exchange Commission disclosure requirements
regarding executive compensation. The Company may also, but is not
obligated to, provide additional disclosure beyond that required by law when
the Company deems it to be appropriate and determines that such
disclosure is in the best interest of the Company and its shareholders.

Miscellaneous
Nothing in this policy shall limit or otherwise affect any of the following: 1)
management’s ability to take any disciplinary action with respect to any
Affected Employee; 2) the Committee’s ability to use its negative discretion
with respect to any incentive compensation performance target at any time;
or 3) the Committee’s or management’s ability to reduce the amount (in
whole or in part) of a current or future bonus or other cash or non-cash
incentive compensation award to any executive or other employee for any
reason as they may deem appropriate and to the extent permitted by law.
Nothing in this policy shall replace or otherwise limit or affect the Clawback
Policy for EIP Awards Upon Significant Restatement of Financial Results
and/or the Clawback Policy for PSUs upon Significant Restatement of
Financial Results.

 
TERMS FOR
2016 RESTRICTED STOCK UNIT GRANTS
UNDER THE MERCK & CO., INC. 2010 INCENTIVE STOCK PLAN 

EXHIBIT 10.20

This is a summary of the terms applicable to the Restricted Stock Unit (RSU) Award specified in this document. Different terms may apply
to any prior or future RSU Awards.

Grant Type:

Grant Date:

Vesting Date:

RSU - Annual

May 10, 2016

May 10, 2019

Eligibility : Eligibility for grants is determined under the Merck & Co., Inc. 2010
Incentive Stock Plan for employees of the Company, its subsidiaries, its affiliates or
its joint ventures if designated by the Compensation and Benefits Committee of
Merck’s Board of Directors, or its delegate (the “Committee”).

I. GENERAL INFORMATION

A. Restricted Period. The Restricted Period is the period during which this RSU
Award is restricted and subject to forfeiture. The Restricted Period begins on the
Grant Date and ends on the third anniversary of the Grant Date unless ended
earlier under Article II below.

B. Dividend Equivalents. During the Restricted Period, dividend equivalents will
be accrued for the holder (“you”) if and to the extent dividends are paid by the
Company on Merck Common Stock. Payment of such dividends will be made,
without interest or earnings, at the end of the Restricted Period. If any portion of this
RSU Award lapses, is forfeited or expires, no dividend equivalents will be credited
or paid on such portion. Any payment of dividend equivalents will be reduced to the
extent necessary for the Company to satisfy any tax or other withholding
obligations. No voting rights apply to this RSU Award.

C. Distribution. Upon the expiration of the Restricted Period if you are then
employed, you will be entitled to receive a number of shares of Merck common
stock equal to the number of RSUs that have become unrestricted and the dividend
equivalents that accrued on that portion. Prior to distribution, you must deliver to the
Company an amount the Company determines to be sufficient to satisfy any
amount required to be withheld, including applicable taxes. The Company may, in
its sole discretion, withhold from the RSU Award distribution a number of shares to
pay applicable withholding (including taxes).

D. 409A Compliance. Anything to the contrary notwithstanding, no distribution of
RSUs may be made unless in compliance with Section 409A of the Internal
Revenue Code or any successor thereto. Specifically, distributions made due to a
separation from service (as defined in Section 409A) to a “Specified Employee” as
defined in Treas. Reg. Sec. 1.409A-1(i) or any successor thereto, to the extent
required by Section 409A of the Code will not be made until administratively
feasible following the first day of the sixth month following the separation from
service, in the same form as they would have been made had this restriction not
applied; provided further, that dividend equivalents that otherwise would have
accrued will accrue during the period during which distribution is suspended.

E. Subject to Recoupment. For employees in Band 600 and above, this RSU
Award will be subject to recoupment in the event
of certain violations of Company policy in accordance with the Company’s policy for
Recoupment of Compensation for

Compliance Violations, as set forth in Appendix A (as may be amended from time to
time).

II. TERMINATION OF EMPLOYMENT

If your employment with the Company is terminated during the Restricted Period,
your right to this RSU Award will be determined according to the terms in this
Section II.

A. General Rule. If your employment is terminated during the Restricted Period for
any reason other than those specified in the following paragraphs, this RSU Award
(and any accrued dividend equivalents) will be forfeited on the date your
employment ends. If your employment is terminated as described in this paragraph
and you are later rehired by the Company or JV, this grant nevertheless will expire
according to this paragraph notwithstanding such rehire.

B. Sale. If your employment is terminated during the Restricted Period and the
Company determines that such termination resulted from the sale of your
subsidiary, division or joint venture, the following portion of your RSU Award and
accrued dividend equivalents will be distributed to you at such time as it would have
been paid if your employment had continued: one‑third if employment terminates on
or after the Grant Date but before the first anniversary thereof; and all if
employment terminates on or after the first anniversary of the Grant Date. The
remainder will be forfeited on the date your employment ends. If your employment
is terminated as described in this paragraph and you are later rehired by the
Company or JV, this grant nevertheless will expire according to this paragraph
notwithstanding such rehire.

C. Involuntary Termination. If your employment terminates during the Restricted
Period and the Company determines that your employment was involuntarily
terminated on or after the first anniversary of the Grant Date and during the
Restricted Period, a pro rata portion (based on the number of completed months
held prior to the date your employment terminated) of your RSU Award and accrued
dividend equivalents will be distributed to you at such time as they would have been
paid if your employment had continued. The remainder will be forfeited on the date
your employment ends. An “involuntary termination” includes termination of your
employment by the Company as the result of a restructuring or job elimination, but
excludes non-performance of your duties and the reasons listed under paragraphs
B, or D through H of this section. If your employment is terminated as described in
this paragraph and you are later rehired by the Company or JV, this grant
nevertheless will expire according to this paragraph notwithstanding such rehire.

D. Retirement. If you terminate employment during the Restricted Period by
retirement then a pro-rata portion of this RSU Award will continue and be
distributable in accordance with its terms as if employment had continued and will
be distributed at the time active RSU Grantees receive distributions with respect to
this Restricted Period. The pro-rata portion is the number of complete months of
employment, beginning on the Grant Date and ending on the date

 
employment terminates, divided by 36. The remainder of this RSU Award and any
accrued dividends will terminate on the date employment terminates. For grantees
who are employed in the U.S., “retirement” means a termination of employment
after attaining the earliest of (a) age 55 with at least 10 years of service (b) such
age and service that provides eligibility for subsidized retiree medical coverage or
(c) age 65 without regard to years of service. For other grantees, “retirement” is
determined by the Company. If your employment is terminated as described in this
paragraph and you are later rehired by the Company or JV, this grant nevertheless
will expire according to this paragraph notwithstanding such rehire.

E. Death. If your employment terminates due to your death during the Restricted
Period, all of this RSU Award and accrued dividend equivalents will be distributed to
your estate as soon as possible after your death. If you die during the Restricted
Period, but after your employment terminates for the reasons listed under
paragraphs B, C, D, G or H of this section, the remaining, non-forfeited portion of
this RSU Award and accrued dividend equivalents will be distributed to your estate
as soon as possible after your death.

F. Misconduct. If your employment is terminated as a result of your deliberate,
willful or gross misconduct, this RSU Award and accrued dividend equivalents will
be forfeited immediately upon your receipt of notice of such termination.

G. Disability. If your employment is terminated during the Restricted Period and the
Company determines that such termination resulted from inability to perform the
material duties of your role by reason of a physical or mental infirmity that is
expected to last for at least six months or to result in your death, whether or not you
are eligible for disability benefits from any applicable disability program, then this
RSU Award will continue and be distributable in accordance with its terms as if
employment had continued and will be distributed at the time active RSU Grantees
receive distributions with respect to this RSU Award.

H. Change in Control. If the Company involuntarily terminates your employment
during the Restricted Period without Cause before the second anniversary after the
closing of any change in control, then this RSU Award will continue in accordance
with its terms as if employment had continued and will be distributed at the time
active RSU Grantees receive distributions with respect to this RSU Award. If this
RSU does not remain outstanding following the change in control and is not
converted into a successor RSU, then you will be entitled to receive cash for this
RSU in an amount equal to the fair market value of the consideration paid to Merck
stockholders for a share of Merck common stock in the change in control payable
within 30 days of the closing of the change in control. On the second anniversary of
the closing of the change in control, this paragraph shall expire. Change in control is
defined in the Merck & Co., Inc. Change in Control Separation Benefits Plan
(excluding an MSD Change in Control), but if RSUs are considered “deferred
compensation” under Section 409A of the Internal Revenue Code, the definition of
change in control will be modified to the extent necessary to comply with Section
409A.

I. Joint Venture. Employment with a joint venture or other entity in which the
Company has a significant business or ownership interest is not considered
termination of employment for purposes of this RSU Award. Such employment must
be approved by, and contiguous with employment by, the Company. The terms set
out in paragraphs A-H above apply to this RSU Award while you are employed by
the joint venture or other entity.

III. TRANSFERABILITY

This RSU Award is not transferable and may not be assigned or otherwise
transferred.

IV. ADMINISTRATION

The Committee is responsible for construing and interpreting this grant, including
the right to construe disputed or doubtful plan provisions, and may establish, amend
and construe such rules and regulations as it may deem necessary or desirable for
the proper administration of this grant. Any decision or action taken or to be taken
by the Committee, arising out of or in connection with the construction,
administration, interpretation and effect of this grant shall, to the maximum extent
permitted by applicable law, be within its absolute discretion (except as otherwise
specifically provided herein) and shall be final, binding and conclusive upon the
Company, all eligible employees and any person claiming under or through any
eligible employee. All determinations by the Committee including, without limitation,
determinations of the eligible employees, the form, amount and timing of incentives,
the terms and provisions of incentives and the writings evidencing incentives, need
not be uniform and may be made selectively among eligible employees who
receive, or are eligible to receive, Incentives hereunder, whether or not such eligible
employees are similarly situated.

V. GRANTS NOT PART OF EMPLOYMENT CONTRACT

Notwithstanding reference to grants of incentives in letters offering employment or
in specific employment agreements, incentives do not constitute part of any
employment contract between the Company or JV and the grantee, whether the
employment contract arises as a matter of agreement or applicable law. The value
of any grant or of the proceeds of any exercise of incentives are not included in
calculating compensation for purposes of pension payments, separation pay,
termination indemnities or other similar payments due upon termination of
employment.

This RSU Award is subject to the provisions of the 2010 Incentive Stock Plan.
For further information regarding your RSU Award, you may access the Merck
Global Long-Term Incentives homepage via http://onemerck.com

Unless you notify the Company in writing that you wish to refuse this grant
within 60 days of the Grant Date, you will be deemed to acknowledge that you
have read, understood and agree to all of the terms, conditions and
provisions of this document and the Merck & Co., Inc. 2010 Incentive Stock
Plan.

If you wish to reject this grant, you must send your written notice of rejection
to the Company at:

Attention: Global Executive Compensation and Benefits
Merck & Co., Inc.
2000 Galloping Hill Road, Building K-1
Kenilworth, New Jersey, U.S.A. 07033

 
Appendix A
Recoupment of Compensation for Compliance Violations

individual basis, whether, and to what extent and in which manner, to seek
Recoupment.

4. In exercising its discretion, the Committee may take into consideration, as it
deems appropriate, all of the facts and circumstances of the particular matter and
the general interests of the Company.

Delegation to Management for Certain Recoupment Decisions
The Committee hereby delegates to the Chief Executive Officer (who may further
delegate as he deems appropriate) the authority to administer this policy and to
make any and all decisions under it regarding Affected Employees who are not
Section 16 Officers of the Company. Section 16 Officers are employees of the
Company who are subject to Section 16 of the Securities Exchange Act of 1934.
Management shall report to the Committee on any affirmative decisions to seek
Recoupment pursuant to this delegation.

Disclosure of Recoupment Decisions
The Company will comply with all applicable securities laws and regulations,
including Securities and Exchange Commission disclosure requirements regarding
executive compensation. The Company may also, but is not obligated to, provide
additional disclosure beyond that required by law when the Company deems it to be
appropriate and determines that such disclosure is in the best interest of the
Company and its shareholders.

Miscellaneous
Nothing in this policy shall limit or otherwise affect any of the following: 1)
management’s ability to take any disciplinary action with respect to any Affected
Employee; 2) the Committee’s ability to use its negative discretion with respect to
any incentive compensation performance target at any time; or 3) the Committee’s
or management’s ability to reduce the amount (in whole or in part) of a current or
future bonus or other cash or non-cash incentive compensation award to any
executive or other employee for any reason as they may deem appropriate and to
the extent permitted by law. Nothing in this policy shall replace or otherwise limit or
affect the Clawback Policy for EIP Awards Upon Significant Restatement of
Financial Results and/or the Clawback Policy for PSUs Upon Significant
Restatement of Financial Results.

POLICIES AND PROCEDURES

Policy
It is the policy of the Compensation and Benefits Committee of the Board of
Directors (the “Committee”) that the Committee will exercise its discretion to
determine whether to seek Recoupment of any bonus and/or other incentive
compensation paid or awarded to an Affected Employee with respect to any
performance period beginning after December 31, 2013, where it determines, in
consultation with the Audit Committee, that: a) the Affected Employee engaged in
misconduct, or failed to reasonably supervise an employee who engaged in
misconduct, that resulted in a Material Policy Violation relating to the research,
development,
manufacturing, sales, or marketing of Company products; and b) the Committee
concludes that the Material Policy Violation caused Significant Harm to the
Company, as those terms are defined in this policy. The Committee’s exercise of its
discretion may take into account any considerations determined by the Committee
to be relevant.

Definitions
1. “Recoupment” is defined to include any and all of the following actions to the
extent permitted by law: (a) reducing the amount of a current or future bonus or
other cash or non-cash incentive compensation award, (b) requiring reimbursement
of a bonus or other cash-based incentive compensation award paid with respect to
the most recently completed performance period, (c) cancelling all or a portion of a
future-vesting equity award, (d) cancelling all or a portion of an equity award that
vested within the previous twelve-month period, (e) requiring return of shares paid
upon vesting and/or reimbursement of any proceeds received from the sale of an
equity award, in each case that vested within the previous twelve-month period, and
(f) any other method of reducing the total compensation paid to an employee for
any prior twelve-month period or any current or future period.

2. A “Material Policy Violation” is defined as a material violation of a Company
policy relating to the research, development, manufacturing, sales, or marketing of
Company products.

3. An “Affected Employee” is an employee in Band 600 or higher who (i) engaged in
misconduct that results in a Material Policy Violation; or (ii) failed in his or her
supervisory responsibilities to reasonably manage or monitor the conduct of an
employee who engaged in misconduct that results in a Material Policy Violation.

4. “Significant Harm” means a significant negative impact on the Company’s
financial operating results or reputation.

Procedures
1. The Committee, acting in consultation with the Audit Committee, shall administer
this policy and have full discretion to interpret and to make any and all
determinations under this policy, subject to the approval of the full Board of
Directors in the case of a determination to seek or waive Recoupment from the
Chief Executive Officer.

2. The General Counsel, in consultation with the Chief Ethics and Compliance
Officer and the Executive Vice President, Human Resources, is responsible for
determining whether to refer a matter to the Committee for review under this policy
and for assisting the Committee with its review. The Committee may consult with
other Board Committees and any external or internal advisors as it deems
appropriate.

3. If the Committee, acting in consultation with the Audit Committee, determines
that there is a basis for seeking Recoupment under this policy, the Committee shall
exercise its discretion to determine for each Affected Employee, on an

 
2016 PERFORMANCE SHARE UNIT
AWARD TERMS 
UNDER THE MERCK & CO., INC. 2010 STOCK INCENTIVE PLAN

EXHIBIT 10.21

I.    GENERAL. These Performance Share Units (“PSUs”) are
granted under and subject to the following Award Terms and the
Merck & Co., Inc. 2010 Stock Incentive Plan (the "Merck ISP").

II.    DEFINITIONS. For the purpose of these Award Terms:

Grant Type:

PSU - Annual

Grant Date:

March 31, 2016

Award Period:

Jan. 1, 2016 -
Dec. 31, 2018

“ Adjusted Operating Cash Flow ” means the sum of the Company’s after-tax non-GAAP net income (attributable to the Company) less the
change in working capital (working capital includes Trade Accounts Receivable and Inventory – including Trade Accounts Receivables and
Inventory included in Other Assets – net of Accounts Payable) plus non-GAAP depreciation and amortization for each of calendar year of the
Award Period.

The above result shall be adjusted to exclude charges or items from the measurement of performance relating to (1) the impact of foreign
exchange; (2) the impact of significant unplanned acquisitions/divestitures and (3) the impact of significant, unplanned research &
development investments.

“ Award Period ” means the three-year period commencing on January 1, 2016 and ending on December 31, 2018.

“ Cash Flow Performance Payout ” means the percentage of Target Shares to be paid out based upon the Company’s Adjusted Operating
Cash Flow goal as determined under paragraph C of Section III.

“ Code ” means the Internal Revenue Code of 1986 or any successor thereto.

“ Final Award ” means the percentage of the Target described in Section III hereof.

“ Grant Date ” means the date a Performance Share Unit is granted.

“ Peer Healthcare Companies " are the healthcare companies used by the Committee in evaluating the Company’s TSR Performance for the
entire Award Period. For 2016 and for so long thereafter during the Award Period that such companies are publicly traded on a nationally
recognized stock exchange, the following are the Peer Healthcare Companies except as described below.

AbbVie
Amgen
Astra Zeneca
Bristol-Myers Squibb
Eli Lilly
GlaxoSmithKline

Roche
Johnson & Johnson
Novartis
Pfizer
Sanofi-Aventis

The Committee intends that the Peer Healthcare Companies be subject to such adjustment as may be necessary to reflect merger,
reorganization, recapitalization, extraordinary cash dividend, combination of shares, consolidation, rights offering, spin off, split off, split up,
bankruptcy, liquidation, acquisition, or other similar change in any Peer Healthcare Company.

“ Performance Share ” means a phantom share of Common Stock. Until distributed pursuant to Article VI, Performance Shares shall not
entitle the holder to any of the rights of a holder of Common Stock, including voting rights; provided, however, that the Committee retains the
right to make adjustments as described in Section 7 of the Merck ISP.

 
 
 
 
“ Performance Unit Grantee ” or “ Grantee ” means an eligible employee who receives a Performance Share Unit.

“ Performance Share Unit ” or “ PSU ” means an award of Performance Shares as described in these Award Terms.

“ Target Shares ” means the number of Performance Shares that will be distributable if the Performance Measures are achieved at the level
identified as “target” for the entire Award Period.

“ Total Shareholder Return” or “TSR ” means the change in value of one share of a company’s Common Stock over the Award Period, taking
into account both stock price appreciation (or depreciation) and the reinvestment of dividends. The beginning and ending stock prices will be
based on the average closing stock prices during the months of December 2015 and December 2018, respectively. TSR will be calculated on a
compound annualized basis over the Award Period.

“TSR Performance Payout” means the percentage of Target Shares to be paid out based upon the Company’s TSR Performance as determined
under paragraph B of Section III.

III.    CALCULATION OF FINAL AWARD OF PERFORMANCE SHARE UNITS

The Performance Unit Grantee shall vest in the number of PSUs to the extent provided for in this Section III unless otherwise provided for in
Section V (“Termination of Employment”).

Performance Metrics. The vesting of 50% of the Target Shares will be determined based upon the Company’s TSR Performance

A. 
as determined under paragraph B (the “ TSR Performance Payout ”); and 50% of the Target Shares will be determined based upon the
Company’s level of achievement of the Adjusted Operating Cash Flow goal as described in paragraph C (the “ Cash Flow Performance Payou
t”). The Final Award equals the TSR Performance Payout plus the Cash Flow Performance Payout.

TSR Performance Payout
%
x Target Shares
x 50%

+

Adjusted Operating Cash
Flow Payout %
x Target Shares
x 50%

=

Final Award

B. 

TSR Performance Payout . The TSR Performance Payout shall be determined as follows:

a.      If the Company’s annualized TSR is greater than the median of the annualized TSR of the Peer Healthcare Companies, then the
TSR Performance Payout will equal 100% plus five times the difference in percentage points up to a maximum of 200%; provided, however,
that if the Company’s annualized TSR is negative, then in no event will the TSR Performance Payout be greater than 100%.

For example, if the Company’s annualized TSR is 25% and the median annualized TSR of the Peer Healthcare Companies is 20%,

then the TSR Performance Payout would be 125% [100% + ((25% -20%) x 5%)].

b.      If the Company’s TSR is less than the median of the annualized TSR among the Peer Healthcare Companies, then the TSR

Performance Payout will equal 100% minus five times the difference in percentage points; provided, however, that if such median exceeds
the Company’s TSR by more than 10 percentage points, no TSR Performance Payout will be earned with respect to this portion of the PSU.

 
C.    Cash Flow Performance Payout. The Cash Flow Performance Payout shall be determined in accordance with the following
performance schedule:

Adjusted Operational Cash Flow
($ Billion)
Less than $30.86
$30.86 (Threshold)
$36.30 (Target)
$38.12
$39.94 (Stretch)

Payout Percentage

0%
25%
100%
150%
200%

A Payout Percentage corresponding to performance between two discrete values in the table will be interpolated.

D.    Maximum Award . Anything in these Award Terms to the contrary notwithstanding, the Final Award shall be reduced to the extent
necessary to reflect that the value of the Final Award may not exceed four times the Target Share, valued as of the Grant Date.

IV.    DIVIDENDS

During the Award Period, dividend equivalents will be accrued on the Performance Shares if and to the extent dividends are paid by
the Company on Merck Common Stock. Payment of such dividends will be made, without interest or earnings, at the end of the Award only
on the Final Award. Such dividends shall be paid as additional shares in an amount equal to the sum of the dividends paid during the Award
Period on the Final Award divided by the price of a share of Merck common stock on the date the Final Award is determined. If any portion
of this PSU award lapses, is forfeited or expires, no dividend equivalents will be credited or paid on such portion. Any payment of dividend
equivalents will be reduced to the extent necessary for the Company to satisfy any tax or other withholding obligations.

V.    TERMINATION OF EMPLOYMENT

A.    General Rule. If a Grantee’s employment is terminated during the Award Period for any reason other than those specified in the
following paragraphs, this PSU award will be forfeited on the date employment ends.

B.    Involuntary Termination. If a Grantee’s employment terminates during the Award Period and the Company determines that
employment was involuntarily terminated on or after the first anniversary of the Grant Date, a pro rata portion (based on the number of
completed months held during the Award Period prior to the date employment terminated) of this PSU Award will be distributed at such time
as it would have been paid if employment had continued, based on actual performance during the Award Period as determined in accordance
with Section III. The remainder will be forfeited on the date employment ends. The pro rata portion shall be determined by multiplying the
Final Award by a fraction, the numerator of which is the number of completed months in the Award Period during which the Grantee was
employed by the Company or JV, and the denominator of which is 36. An “involuntary termination” includes termination of employment by
the Company as the result of a restructuring or job elimination, but excludes non-performance of duties and the reasons listed under
paragraphs C through G of this section.

C.    Sale. If a Grantee’s employment is terminated during the Award Period and the Company determines that such termination resulted from
the sale of his or her subsidiary, division or joint venture, the following portion of this PSU Award will be distributed at such time as it would
have been paid if employment had continued, based on the Final Award: one third if employment terminates on or after the Grant Date but
before the first anniversary of the Award Period thereof; and all if employment terminates on or after the first anniversary of the first day of
the Award Period. The remainder will be forfeited on the date a Grantee’s employment ends.

D.    Retirement. If a Grantee terminates employment during the Award Period by retirement (including early and disability retirement), then
this PSU Award will continue and be distributable on a pro rata basis at the time active Grantees receive such distributions with respect to that
Award Period based on the Final Award. The pro rata portion shall be determined by multiplying the Final Award by a fraction, the
numerator of which is the number of completed months in the Award Period during which the Grantee was employed by the Company or JV,
and the denominator of which is 36. For Grantees who are employed in the U.S., “retirement” means a termination of employment after
attaining the earliest of (a) age 55 with at least 10 years of service (b) such age and service that provides eligibility for subsidized retiree
medical coverage or (c) age 65 without regard to years of service. For other Grantees, “retirement” is determined by the Company.

E.    Death. If a Grantee’s employment terminates due to death during the Award Period, all of this PSU Award will continue and be
distributed to his or her estate at the time active Grantees receive such distributions with respect to this PSU Award, based on the Final
Award. If a Grantee dies while any portion of this PSU Award remains outstanding, but after employment terminates for the reasons listed
under paragraphs B, C, D or G of this section, the portion that remains outstanding will continue and be distributable at the time active
Grantees receive such distributions with respect to that Award Period based on the Final Award.

F.    Misconduct. If a Grantee’s employment is terminated as a result of deliberate, willful or gross misconduct, this PSU Award will be
forfeited immediately upon the Grantee’s receipt of notice of such termination.

G.     Disability. If a Grantee’s employment is terminated during the Award Period and the Company determines that such termination
resulted from inability to perform the material duties of his or her role by reason of a physical or mental infirmity that is expected to last for at
least six months or to result in death, whether or not he or she is eligible for disability benefits from any applicable disability program, then
this PSU Award will continue and be distributable in accordance with its terms as if employment had continued based on the Final Award and
will be distributed at the time active PSU Grantees receive distributions with respect to this PSU Award.

H.     Joint Venture Service. A transfer of a Grantee’s employment to a joint venture, including, in the case of grants to Legacy Merck
Employees, any other entity in which the Company has determined that it has a significant business or ownership interest, is not considered
termination of employment for purposes of this PSU Award. Such employment must be approved by, and contiguous with employment by,
the Company. The terms set out in paragraphs A-G above apply to this PSU Award while a Grantee is employed by the joint venture or other
entity.

VI.    DISTRIBUTION OF PERFORMANCE SHARES

A.    General Rule. Following the end of the Award Period, each Grantee shall be entitled to receive a number of shares of Common Stock
equal to the Final Award plus the shares for accrued dividend equivalents set forth in Section IV, rounded to the nearest whole number (no
fractional shares shall be issued). Such distribution shall be made as soon as administratively feasible, but in no event later than the end of the
calendar year in which the Final Award is determined in accordance with Section III. Unless otherwise determined by the Committee, the
Company shall withhold any applicable taxes directly from a Performance Share Unit before it is denominated in actual shares of Common
Stock.

B.    Death. In the case of distribution on account of a Grantee’s death, the portion of the Performance Share Unit distributable shall be
distributed to the Grantee’s estate. Unless the Committee determines otherwise, the Company will withhold any applicable taxes directly from
a Performance Unit before it is denominated in actual shares of Common Stock.

VII.    TRANSFERABILITY

Prior to distribution pursuant to Section VI, the PSU Award shall not be transferable, assignable or alienable except by will or the laws of
descent or distribution following a Grantee’s death.

VIII.     ADMINISTRATIVE POWERS

In addition to the Committee’s powers set forth in the Merck ISP, anything in these Award Terms to the contrary notwithstanding, the
Committee may revise the terms of any PSU not yet granted or, with respect to any PSU not intended to constitute “performance-based
compensation” under Section 162(m) of the Code, granted but prior to the end of an Award Period if unforeseen events occur and which, in
the judgment of the Committee, make the application of the Terms of this PSU Award unfair and contrary to their intentions unless a revision
is made.

IX.

CLAWBACK POLICY FOR PSUS UPON SIGNIFICANT RESTATEMENT OF FINANCIAL RESULTS AND
CERTAIN COMPLIANCE VIOLATIONS

A.     PSUs Subject to Clawback. For employees in Band 600 and above, this PSU Award will be subject to recoupment in the event of
violations of the Company policy for Recoupment of Compensation for Compliance violations as set forth in Appendix A as amended from
time to time. In addition, PSUs, and any proceeds therefrom, are subject to the Company’s right to reclaim their benefits in the event of a
significant restatement of financial results for any Award Period, pursuant to the process described below.

1. 

The Audit Committee of the Board will review the issues and circumstances that resulted in a restatement of

financial results to determine if the restatement was significant and make an initial determination of the cause of the restatement-that
is whether the restatement was caused, in whole or in part, by Executive Fault (as those terms are defined below); and

2. 

The Compensation and Benefits Committee of the Board will (a) recalculate the Company's results for any Award
Period with respect to PSUs that included an Award Period which occurred during the restatement period; and (b) if it is determined
that such restatement was caused in whole or in part by the Executive's Fault, the Compensation and Benefits Committee will seek
reimbursement from the Executive of that portion of the payout of the PSU that the Executive received within 18 months of the
restatement based on the erroneous financial results.

B.      “Executive” means executive officers for the purposes of the Securities Exchange Act of 1934, as amended.

C.      “Fault” means fraud or willful misconduct. "Willful misconduct" is generally viewed as dereliction of a duty or unlawful or improper
behavior committed voluntarily and intentionally; something more than negligence. If the Audit Committee determines that Fault may have
been a factor causing the restatement, the Audit Committee will appoint an independent investigator whose determination shall be final and
binding.

D.      Exclusions from Clawback. This Section does not apply to restatements that the Audit Committee determines (1) are required or
permitted under generally accepted accounting principles (“GAAP”) in connection with the adoption or implementation of a new accounting
standard or (2) are caused due to the Company's decision to change its accounting practice as permitted under GAAP.

E.      Compliance Violations. For employees in Band 600 and above, this PSU will be subject to recoupment in the event of certain
violations of Company policy in accordance with the Company’s policy for Recoupment of Compensation for Compliance Violations, as set
forth in Appendix A (as may be amended from time to time).

X.      Change-in-Control

Upon the occurrence of a change-in-control (as such term is defined in the Merck ISP), the Final Award shall be 100%. The Final Award will
be distributed at the same time and in the same manner as described in Section VI.

If the Company terminates a Grantee’s employment except as described in Section V(F), (1) during the Award Period and (2) within two
years following a change-in-control, the Final Award will be 100% and will be distributed when distributed to active Grantees.

XI.      Section 409A Compliance .

Anything in the ISP or these Award Terms to the contrary notwithstanding, no distribution of PSUs may be made unless in compliance with
Section 409A of the Code or any successor thereto. In addition, distributions, if any, to a “Specified Employee” as defined in Treas. Reg. Sec.
1.409A-1(i) or any successor thereto, to the extent required by Section 409A of the Code, made due to a separation from service (as defined
in Section 409A) will not be made before the first day of the sixth month following the separation from service, in the same form as they
would have been made had this restriction not applied; provided further, that no dividend or dividend equivalents will be paid, accrued or
accumulated in respect of the period during which distribution was suspended.

APPENDIX A
Recoupment of Compensation for Compliance Violations

individual basis, whether, and to what extent and in which manner, to seek
Recoupment.

4. In exercising its discretion, the Committee may take into consideration, as it
deems appropriate, all of the facts and circumstances of the particular matter and
the general interests of the Company.

Delegation to Management for Certain Recoupment Decisions
The Committee hereby delegates to the Chief Executive Officer (who may further
delegate as he deems appropriate) the authority to administer this policy and to
make any and all decisions under it regarding Affected Employees who are not
Section 16 Officers of the Company. Section 16 Officers are employees of the
Company who are subject to Section 16 of the Securities Exchange Act of 1934.
Management shall report to the Committee on any affirmative decisions to seek
Recoupment pursuant to this delegation.

Disclosure of Recoupment Decisions
The Company will comply with all applicable securities laws and regulations,
including Securities and Exchange Commission disclosure requirements regarding
executive compensation. The Company may also, but is not obligated to, provide
additional disclosure beyond that required by law when the Company deems it to be
appropriate and determines that such disclosure is in the best interest of the
Company and its shareholders.

Miscellaneous
Nothing in this policy shall limit or otherwise affect any of the following: 1)
management’s ability to take any disciplinary action with respect to any Affected
Employee; 2) the Committee’s ability to use its negative discretion with respect to
any incentive compensation performance target at any time; or 3) the Committee’s
or management’s ability to reduce the amount (in whole or in part) of a current or
future bonus or other cash or non-cash incentive compensation award to any
executive or other employee for any reason as they may deem appropriate and to
the extent permitted by law. Nothing in this policy shall replace or otherwise limit or
affect the Clawback Policy for EIP Awards Upon Significant Restatement of
Financial Results and/or the Clawback Policy for PSUs Upon Significant
Restatement of Financial Results.

POLICIES AND PROCEDURES

Policy
It is the policy of the Compensation and Benefits Committee of the Board of
Directors (the “Committee”) that the Committee will exercise its discretion to
determine whether to seek Recoupment of any bonus and/or other incentive
compensation paid or awarded to an Affected Employee with respect to any
performance period beginning after December 31, 2013, where it determines, in
consultation with the Audit Committee, that: a) the Affected Employee engaged in
misconduct, or failed to reasonably supervise an employee who engaged in
misconduct, that resulted in a Material Policy Violation relating to the research,
development, manufacturing, sales, or marketing of Company products; and b) the
Committee concludes that the Material Policy Violation caused Significant Harm to
the Company, as those terms are defined in this policy. The Committee’s exercise
of its discretion may take into account any considerations determined by the
Committee to be relevant.

Definitions
1. “Recoupment” is defined to include any and all of the following actions to the
extent permitted by law: (a) reducing the amount of a current or future bonus or
other cash or non-cash incentive compensation award, (b) requiring reimbursement
of a bonus or other cash-based incentive compensation award paid with respect to
the most recently completed performance period, (c) cancelling all or a portion of a
future-vesting equity award, (d) cancelling all or a portion of an equity award that
vested within the previous twelve-month period, (e) requiring return of shares paid
upon vesting and/or reimbursement of any proceeds received from the sale of an
equity award, in each case that vested within the previous twelve-month period, and
(f) any other method of reducing the total compensation paid to an employee for
any prior twelve-month period or any current or future period.

2. A “Material Policy Violation” is defined as a material violation of a Company
policy relating to the research, development, manufacturing, sales, or marketing of
Company products.

3. An “Affected Employee” is an employee in Band 600 or higher who (i) engaged in
misconduct that results in a Material Policy Violation; or (ii) failed in his or her
supervisory responsibilities to reasonably manage or monitor the conduct of an
employee who engaged in misconduct that results in a Material Policy Violation.

4. “Significant Harm” means a significant negative impact on the Company’s
financial operating results or reputation.

Procedures
1. The Committee, acting in consultation with the Audit Committee, shall administer
this policy and have full discretion to interpret and to make any and all
determinations under this policy, subject to the approval of the full Board of
Directors in the case of a determination to seek or waive Recoupment from the
Chief Executive Officer.

2. The General Counsel, in consultation with the Chief Ethics and Compliance
Officer and the Executive Vice President, Human Resources, is responsible for
determining whether to refer a matter to the Committee for review under this policy
and for assisting the Committee with its review. The Committee may consult with
other Board Committees and any external or internal advisors as it deems
appropriate.

3. If the Committee, acting in consultation with the Audit Committee, determines
that there is a basis for seeking Recoupment under this policy, the Committee shall
exercise its discretion to determine for each Affected Employee, on an

 
EXHIBIT 10.24

MERCK & CO. INC. U.S. SEPARATION BENEFITS PLAN

Amended and Restated as of January 1, 2017

MERCK & CO., INC., U.S. SEPARATION BENEFITS PLAN

SECTION 1
PREAMBLE

Merck Sharp & Dohme Corp. established the MSD Separation Benefits Plan (the "MSD Plan"), as amended from time to time, to
provide benefits to eligible non-union employees whose employment with
Merck Sharp & Dohme Corp. or a participating wholly owned subsidiary (collectively, "MSD") was terminated under certain
circumstances at the initiative of MSD.

Schering-Plough Corporation established the Schering-Plough Separation Benefits Plan (the "Schering Plan"), as amended from time
to time, for the purpose of providing severance benefits to eligible union and non-union employees whose employment with
Schering Corporation and certain of its U.S. affiliated companies was terminated under certain circumstances.

Effective January 1, 2012, the Schering Plan merged into the MSD Plan with the MSD Plan being renamed the Merck & Co., Inc.
U.S. Separation Benefits Plan (the "Plan"). The Plan was amended and restated in its entirety at that time. Effective January 1, 2013,
September 1, 2013, October 1, 2013 and November 15, 2014, the Plan was reinstated in its entirety. Effective January 1, 2017, the
Plan is again being amended and restated in its entirety as set forth herein.

The purpose of the Plan is to provide benefits to eligible employees whose employment with an Employer is terminated at the
initiative of the Employer for reasons described below. This Plan is part of the MSD Separation Allowance Plan (Plan No. 514).

1

SECTION 2
DEFINITIONS

For the purposes of this Plan, the following terms shall have the following meanings:

2.1      “ Annual Base Salary ” means

(a) With respect to a Participant who is exempt as of his or her Separation Date, his or her annual base salary in effect

as of his or her Separation Date, according to the Employer’s payroll records, without reduction for any contributions to
Employer-sponsored benefit plans. For the avoidance of doubt, (i) with respect to a Participant who is exempt and regularly
scheduled to work less than full-time as of his or her Separation Date, Annual Base Salary is the reduced annual base salary
in effect on his or her Separation Date applicable to the less than full time position, according to the Employer’s payroll
records, without reduction for any contributions to the Employer-sponsored benefit plans and (ii) no adjustment is made to
Annual Base Salary if the Participant’s annual base salary in effect during any period prior to his or her Separation Date is
higher or lower (for any reason, including promotion/demotion or a move to or from full-time or part-time status) than his or
her annual base salary in effect as of his or her Separation Date, according to the Employer’s payroll records.

(b) With respect to a Participant who is non-exempt as of his or her Separation Date, the hourly rate according to the

Employer’s payroll records in effect as of his or her Separation Date multiplied by the number of hours the Eligible
Employee is regularly scheduled to work as of his or her Separation Date (up to a maximum of 2080 hours) .

Annual Base Salary does not include bonuses, commissions, overtime pay, shift pay, premium pay, lump sum merit

increases, cost of living allowances, income from stock options or other incentives under an Incentive Stock Plan of the
Employer (or the Parent or any of its subsidiaries), stock grants or other incentives, or other pay not specifically included
above.

For example, a Participant who is regularly scheduled to work less than full-time on his Separation Date has 10
Complete Years of Continuous Service (9 at full-time and 1 at less than full-time), had an annual base salary of $100,000 as a
full-time employee but on his Separation Date has an annual base salary of $50,000 according to the Employer’s payroll
records because it was reduced as applicable for the less than full-time position. The Participant’s Separation Pay will be
calculated using 10 Complete Years of Continuous Service and an Annual Base Salary of $50,000. There is no adjustment in
Annual Base Salary for prior years of higher annual base salary due to full-time service.

2.2      “ Base Pay Rate ” means

(a)      With respect to an Eligible Employee who is exempt, his/her annual base pay according to the Employer’s

payroll records in effect as of the date the Eligible Employee is offered a Qualified Alternative Position or a Negotiated Job
Offer. For an Eligible Employee who is regularly scheduled to work less than full-time, annual base pay is the reduced annual
base pay to the less than full-time position.

(b)      With respect to an Eligible Employee who is non-exempt, the hourly rate according to the Employer’s payroll

records in effect as of the date the Eligible Employee is

2

offered a Qualified Alternative Position or a Negotiated Job Offer multiplied by the number of hours the Eligible Employee
is regularly scheduled to work (up to a maximum of 2080 hours).

Base Pay Rate is calculated without reduction for any contributions to Employer-sponsored benefit plans. Base Pay Rate
includes applicable shift pay and premium pay but does not include bonuses, commissions, overtime pay, lump sum merit
increases, cost of living allowances, income from awards granted under an Incentive Stock Plan of the Employer (or the
Parent or its subsidiaries), or other pay not specifically included above .

2.3      “ Basic Life Insurance ” means life insurance provided to an Eligible Employee under a plan sponsored by Parent or a
subsidiary of Parent equal to 1x "base pay" as defined under the life insurance plan in which the Eligible Employee
participates, as it may be amended from time to time.

2.4      “ Benefits Continuation Period ” means the period of time, as set forth on Schedule B-2, during which a Participant
is eligible to receive Separation Benefits, provided, however that the Participant may elect to end the period earlier than
indicated on Schedule B-2 by notifying the Employer's health and insurance plan administrator (i) within the later of thirty
(30) days from the Participant's Separation Date or the date by which the Participant is provided to review the Separation
Letter so that the Benefit Continuation Period ends on the date it would have otherwise begun, or (ii) during the Employer's
annual open enrollment period for health and insurance benefits so that the Benefit Continuation Period ends the following
January 1 (provided that date is not beyond the period set forth on Schedule B-2), or (iii) mid-year with a qualified status
change that otherwise permits the Participant to make a change to the Participant's healthcare coverage in accordance with the
terms of the Employer's healthcare plan so that the Benefits Continuation Period ends on the date the mid-year change would
otherwise be effective under the terms of the Employer's healthcare plan (provided that date is not beyond the period set forth
on Schedule B-2).

2.5      “ Change in Control ” shall have the meaning set forth in the CIC Plan (and, for avoidance of doubt, a valid
amendment of that definition under the CIC Plan shall constitute an amendment of this Plan without further action).

2.6      “ CIC Plan ” means the Merck & Co., Inc. Change in Control Separation Benefits Plan, as amended and restated
effective January 1, 2013 and as it may be further amended from time to time, and any successor thereto.

2.7      “ Claims Reviewer ” means the Merck & Co., Inc. Employee Benefits Committee (or its delegate) whose members
are appointed by the Parent's Executive Vice President of Human Resources or his or her delegate; provided, however, for
Section 16 Officers, Claims Reviewer means the Compensation and Benefits Committee of the Board of Directors of Parent
or its delegate.

2.8      “ Code ” means the Internal Revenue Code of 1986, as amended and the regulations promulgated thereunder.

2.9      “ Complete Years of Continuous Service ” means (a) for a Legacy Schering Employee, a year from the Participant’s
Most Recent Hire Date with a Legacy Schering Entity to its anniversary, and thereafter from each anniversary to the next, (b)
for a Legacy Merck Employee, a year from the Participant's Most Recent Hire Date with a Legacy Merck Entity to its
anniversary, and thereafter from each anniversary to the next, (c) for a Legacy Inspire Employee, a year from

3

the Participant’s Most Recent Hire Date with a Merck Entity to its anniversary, and thereafter from each anniversary to the
next, and (d) for a Non-Legacy Company Employee, from the Participant’s Most Recent Hire Date with a Merck Entity, and
thereafter from each anniversary to the next.

2.10      “ Continuous Service ” means (a) for a Legacy Schering Employee, the period of a Participant's continuous
employment with a Legacy Schering Entity commencing on the Participant's Most Recent Hire Date with a Legacy Schering
Entity and ending on the Separation Date as reflected on the Employer’s employee database, (b) for a Legacy Merck
Employee, the period of a Participant's continuous employment with a Legacy Merck Entity commencing on the Participant's
Most Recent Hire Date with a Legacy Merck Entity and ending on the Separation Date as reflected on the Employer’s
employee database, (c) for a Legacy Inspire Employee, the period of a Participant's continuous employment with a Merck
Entity commencing on the Participant's Most Recent Hire Date with a Merck Entity and ending on the Separation Date as
reflected on the Employer’s employee database, and (d) for a Non-Legacy Company Employee, the period of a Participant's
continuous employment with a Merck Entity commencing on the Participant's Most Recent Hire Date with a Merck Entity
and ending on the Separation Date as reflected on the Employer’s employee database. For the avoidance of doubt, service
prior to November 4, 2009 by a Legacy Schering Employee with a Legacy Merck Entity or a Legacy Merck Employee with a
Legacy Schering Entity is excluded from “Continuous Service.” Notwithstanding anything contained in this Plan to the
contrary, employment with a Legacy Schering Entity, Legacy Merck Entity or a Merck Entity as an Excluded Person does
not count as "Continuous Service".

2.11      “ Eligible Employee ” means (a) any regular full-time or regular part-time employee of an Employer who is on the
Employer's normal U.S. payroll and as to whom the terms and conditions of employment are not covered by a collective
bargaining agreement unless the collective bargaining agreement specifically provides for coverage under the Plan; or (b) a
U.S. Expatriate on an Employer's normal U.S. payroll.

The term “Eligible Employee” shall not include:         

(i)    an employee (x) who is a party to an employment agreement with the Employer or with the Parent (or any of its
subsidiaries) or (y) who is entitled, upon termination of employment with the Employer, to separation, severance,
termination or other similar payments (1) under another plan or program sponsored by the Employer or Parent (or any of
its subsidiaries); or (2) pursuant to a separate agreement with the Employer or Parent (or any of its subsidiaries) or (z)
who is a party to an agreement with the Employer or Parent (or any of its subsidiaries) that provides that no payment or
benefits are due to the employee in connection with his or her termination of employment; provided, however, in each
case under the foregoing clauses (x), (y) and (z) unless the plan, program or agreement expressly provides for benefits
under this Plan;

(ii)    a participant in the CIC Plan (but this clause shall only apply during the Protection Period (as defined in Section
8.1));

(iii)     temporary employees (including college coops, summer employees, high school coops, flexible workforce
employees, post-doctorate research fellows and any other such temporary classifications ) and/or employees called by the
Employer at any time for employment in theU.S. on a non-scheduled and non-recurring basis, and who becomes an
employee of the Employer only after reporting to work for the period of time during which the person is working;

4

(iv) an Excluded Person;

(v) employees of a non-US subsidiary of an Employer (or who are dual employees of a non-US subsidiary of an
Employer) who are on assignment in the US;

(vi) employees whose employment ends for any reason while on unapproved leaves of absence;

(vii) employees whose employment ends for any reason while on approved leaves of absence for a period equal to or
more than six continuous months regardless of the reason(s) for the leave excluding the following approved leaves of
absence: medical disability leaves, military leaves and family medical leaves under federal or state family medical leave
laws and excluding Grandfathered Legacy Schering Employees;

(viii) employees whose employment ends for any reason while on approved leaves of absence for medical disability for a
period equal to or more than one year excluding Grandfathered Legacy Schering Employees;

(ix) employees who are covered by the IAM Agreement at the Kenilworth, NJ site and the Union, NJ site, whose
Separation Date occurs (or occurred) or layoff begins (or began) (i) before February 1, 2014, or (ii) on or after February
1, 2014 and who elect to retain their recall rights;

(x) employees who are covered by the IAM Agreement at the Summit, NJ site whose Separation Date occurred or layoff
began before October 1, 2013; and/or

(xi) Grandfathered Legacy Schering Employees who have not been medically cleared to return to work or who do not
return to work within two years of their first day absent.

For purposes of the foregoing clauses (vii) and (viii), a series of leaves of absence is considered one continuous leave for
purposes of calculating the six-month or one-year requirement if the employee does not return to active employment for
any reason, including but not limited to because the employee’s former position is unavailable and the employee is unable
to secure a new position.

Whether an individual is an Eligible Employee or not is determined as of the date of his/her Termination due to
Workforce Restructuring or for Rebadged Employees as of the date of his/her termination of employment due to an outsource
transaction or for Grandfathered Legacy Schering Employees as of the date of his/her Grandfathered Legacy Schering
Termination.

2.12      “ Employer ” means individually and collectively, the entities identified on Schedule A attached hereto.

2.13      “ ERISA ” means the Employee Retirement Income Security Act of 1974, as amended, and the regulations
promulgated thereunder.

2.14      “ Excluded Person ” means a person who (i) is an independent contractor, or agrees or has agreed that he/she is an
independent contractor, or (ii) has any agreement or understanding with the Employer, or any of its affiliates that he/she is
not an employee or an Eligible Employee, or (iii) is employed by a temporary or other employment agency, regardless of the
amount of control,

5

supervision or training provided by the Employer or its affiliates, or (iv) is a “leased employee” as defined under Section
414(n) of the Internal Revenue Code of 1986, as amended, or (v) is not treated by the Employer as an employee for purposes
of withholding federal income taxes, regardless of any contrary Internal Revenue Service, governmental or judicial
determination relating to such employment status or tax withholding. An Excluded Person is not eligible to participate in the
Plan even if a court, agency or other authority rules that he/she is a common‑law employee of the Employer or its affiliates.

2.15      "Grandfathered Legacy Schering Employees " means Legacy Schering Employees who (i) were absent from work
on December 31, 2011 on an approved medical leave of absence and receiving disability benefits under an Employer-
sponsored disability plan and (ii) were notified on or prior to December 31, 2011 that their position was scheduled to be
eliminated.

2.16      " Grandfathered Legacy Schering Termination " means the termination of employment by the Employer of a
Grandfathered Legacy Schering Employee who is medically cleared to return to work within two years of his or her first day
absent but does not return to work within such time period because he or she is unable to secure a Qualified Alternate
Position.

2.17      “ IAM Agreement ” means a collective bargaining agreement between Merck Sharp & Dohme Corp. and District 15,
Lodge 315 of the International Association of Machinists and Aerospace Workers. As of November 15, 2014, there are two
separate bargaining agreements with the IAM (Kenilworth/Union, NJ and Summit, NJ).

2.18      “ Legacy Inspire Employee ” means an Eligible Employee who (a) as of December 31, 2012 is employed by a
Merck Entity and either continues to be employed by such entity until his/her Separation Date or is rehired or transferred to
such entity after December 31, 2012, and (b) as of his/her Separation Date is (i) employed by an Employer, and (ii) coded in
the employee data base of Parent as S6 (Legacy Inspire) under infotype 35, and (iii) not covered by a collective bargaining
agreement.

2.19      " Legacy Merck Employee " means an Eligible Employee who (a) as of December 31, 2012 is employed by a
Merck Entity and either continues to be employed by such entity until his/her Separation Date or is rehired or transferred to
such entity after December 31, 2012, and (b) as of his/her Separation Date is (i) employed by an Employer, and (ii) coded in
the employee data base of Parent with a blank indicator under infotype 35, and (iii) not covered by a collective bargaining
agreement, other than one of the IAM Agreements. For the avoidance of doubt, “Legacy Merck Employee” excludes the
following: employees who are covered by the IAM Agreement (A) at the Kenilworth, NJ site and the Union, NJ site, whose
Separation Date occurs (or occurred) or layoff begins (or began) (i) before February 1, 2014, or (ii) on or after February
1,2014 and who elect to retain their recall rights and (B) at the Summit, NJ site whose Separation Date occurred or layoff
began before October 1, 2013.

2.20      " Legacy Merck Entity " means (a) for the period prior to November 4, 2009, Old Merck and its direct or indirect
wholly owned subsidiaries and (b) for the period beginning November 4, 2009, New Merck and its direct or indirect wholly
owned subsidiaries.

2.21      " Legacy Schering Employee " means an Eligible Employee who (a) as of December 31, 2012 is employed by a
Merck Entity and either continues to be employed by such entity until his/her Separation Date or is rehired by or transferred
to such entity after December 31, 2012, and (b) as of his/her Separation Date is (i) employed by an Employer, (ii) coded in
the employee data base of Parent as S1 (Legacy Organon), S2 (Legacy Intervet) or S5 (Legacy Schering-Plough)

6

under infotype 35, and (iii) not covered by a collective bargaining agreement other than one of the IAM Agreements or an
agreement that specifically provides for benefits under this Plan. For the avoidance of doubt, “Legacy Schering Employee”
excludes the following: employees who are covered by the IAM Agreement (A) at the Kenilworth, NJ site and the Union, NJ
site, whose Separation Date occurs (or occurred) or layoff begins (or began) (i) before February 1, 2014, or (ii) on or after
February 1, 2014 and who elect to retain their recall rights and (B) at the Summit, NJ site whose Separation Date occurred or
layoff began before October 1, 2013.

2.22      " Legacy Schering Entity " means (a) for the period prior to November 4, 2009, Schering-Plough Corporation and
its direct or indirect wholly owned subsidiaries and (b) for the period beginning November 4, 2009, New Merck and its direct
or indirect wholly owned subsidiaries.

2.23      “ Merck Entity ” means for the period beginning November 4, 2009, New Merck and its direct or indirect wholly
owned subsidiaries.

2.24      “ Merck Retiree Medical Plan ” means the retiree medical plan sponsored by Merck Sharp & Dohme which
includes the following components: (i) the Merck Group Retiree Medical Plan which provides group retiree medical and
prescription drug benefits to eligible retirees and their eligible dependents, in each case who are under age 65 or not
Medicare-eligible as more fully described in the Merck Group Retiree Medical Plan SPD, and (ii) the Merck Retiree HRA
which provides reimbursement benefits to eligible retirees and their eligible dependents who are eligible for subsidized
retiree medical benefits and, in each case ,who are age 65 or older and Medicare-eligible as more fully described in the
Merck Retiree Health Reimbursement Account SPD.

2.25      “ Misconduct ” means conduct which includes (a) falsification of an Employer's or Parent's
records/misrepresentation; (b) theft; (c) acts or threats of violence; (d) refusal to carry out assigned work; (e) unauthorized
possession of alcohol or illegal drugs on an Employer's or Parent's premises; (f) being under the influence of alcohol or
illegal drugs during work hours; (g) willful intent to damage or destroy an Employer's or Parent's property; (h) violation of
the Parent's "Our Values and Standards"; (i) acts of discrimination/harassment; (j) conduct jeopardizing the integrity of the
products of an Employer, Parent or one or more of its subsidiaries; (k) violation of rules, policies, and/or practices of an
Employer or Parent; or (l) other conduct considered to be detrimental to an Employer, the Parent or one or more of its
subsidiaries.

2.26      “ Most Recent Hire Date ” means (a) for a Legacy Schering Employee, his or her most recent hire date at a Legacy
Schering Entity or an entity acquired by a Legacy Schering Entity as reflected on the Employer’s employee data system, (b)
for a Legacy Merck Employee, his or her most recent hire date at a Legacy Merck Entity or an entity acquired by a Legacy
Merck Entity asreflected on the Employer’s employee data system, (c) for a Legacy Inspire Employee, his or her most recent
hire date at a Merck Entity or an entity acquired by a Merck Entity as reflected on the Employer’s employee data system, and
(d) for a Non-Legacy Company Employee, his or her most recent hire date at a Merck Entity or an entity acquired by a Merck
Entity as reflected on the Employer’s employee data system. Notwithstanding the foregoing, the most recent hire date for a
Legacy Merck Employee who was employed by a Legacy Merck Entity on December 31, 1997, transferred from that entity
to Merial as of January 1, 1998, remained continuously employed by Merial through the date he or she transferred
employment from Merial to a Legacy Merck Entity and whose transfer to a Legacy Merck Entity occurred between October
1, 2000 and June 1, 2001, is his or her most recent hire date on the Employer's employee data system at a Legacy Merck
Entity prior to his or her transfer to Merial. Notwithstanding the foregoing, the most recent hire date for a Legacy Merck
Employee who was employed by a Legacy Merck Entity on December 31, 2007, transferred from that entity to PRWT as of
January 1, 2008, remained continuously

7

employed by PRWT through September 3, 2010 and who was rehired by a Legacy Merck Entity as of September 3, 2010, is
his or her most recent hire date on the Employer’s employee data system at a Legacy Merck Entity prior to his or her transfer
to PRWT. For the avoidance of doubt, the most recent hire date at an acquired entity may occur before the date the entity was
acquired by a Legacy Schering Entity, Legacy Merck Entity or Merck Entity, provided such date is reflected on the
Employer’s employee data system.

2.27      "Negotiated Job Offer " means an offer of employment (or an offer of continued employment) with a successor
employer or outsource vendor the terms and conditions of which are negotiated by an Employer, Parent or one of its
subsidiaries or affiliates and may include, among other things, a reduction in Base Pay Rate.

2.28      “ New Merck ” means Merck & Co., Inc. (formerly known as Schering-Plough Corporation) on and after November
4, 2009.

2.29      “ Non-Legacy Company Employee ” means an Eligible Employee who (a) is first hired by a Merck Entity on or
after January 1, 2013, and (b) as of his/her Separation Date is (i) employed by an Employer, and (ii) coded in the employee
data base of Parent with a blank indicator under infotype 35, and (iii) not covered by a collective bargaining agreement. For
purposes of determining whether an Eligible Employee is a “Non-Legacy Company Employee” only, an Eligible Employee
who was an employee of an entity on the date that it was acquired by a Merck Entity is considered to be first hired by a
Merck Entity on the date the entity became a wholly owned subsidiary of New Merck or one of its wholly owned
subsidiaries.

2.30      " Offer Outside Geographic Parameters " means (A) for an Eligible Employee who is not eligible to participate in
the Company’s sales incentive plan and who does not qualify as other field-based personnel, a Negotiated Job Offer that
results in the relocation of the Eligible Employee's principal business location to a new principal business location (x) where
the distance between the Eligible Employee’s residence immediately prior to the extension of the Negotiated Job Offer and
his/her new principal business location is more than 50 miles greater than the distance between the Eligible Employee's
residence and his/her principal business location at the time the Negotiated Job Offer is extended or (y) more than 75 miles
from the Eligible Employee's residence at the time the Negotiated Job Offer is extended and not closer to the Eligible
Employee's residence at that time, and (B) for an Eligible Employee who is eligible to participate in the Company’s sales
incentive plan or who qualifies as other field-based personnel, a Negotiated Job Offer that results in the relocation of the
Eligible Employee's geographic workload center location to a new geographic workload center location (x) where the
distance between the Eligible Employee’s residence immediately prior to the extension of the Negotiated Job Offer and
his/her new geographic workload center location is more than 50 miles greater than the distance between the Eligible
Employee's residence and his/her geographic workload center location at the time the Negotiated Job Offer is extended and
(y) more than 75 miles from the Eligible Employee's residence at the time the Negotiated Job Offer is extended and not closer
to the Eligible Employee's residence at that time.

The Employer, in its sole and absolute discretion, will determine (i) whether an Eligible Employee qualifies as other field-
based personnel, (ii) distance using a nationally recognized mapping service, (iii) principal business location, and (iv) the
geographic workload center.

Whether a position is an Offer Outside Geographic Parameters shall be determined at the time a Negotiated Job Offer is
offered or communicated to the Eligible Employee or to the Grandfathered Legacy Schering Employee by the Employer.

8

2.31

“ Old Merck ” means Merck & Co., Inc. prior to November 4, 2009 (subsequently known as Merck Sharp & Dohme
Corp).

2.32    “ Outplacement Benefits ” means benefits for outplacement counseling or other outplacement services made
available to a Participant as provided pursuant to Section 4.4 of this Plan.

2.33    “ Parent ” means New Merck.

2.34    “ Participant ” means an Eligible Employee who has experienced a Termination due to Workforce Restructuring and
who has signed, and, if a revocation period is applicable, not revoked, a Release of Claims in a form that is satisfactory to the
Employer in its sole and absolute discretion.

The term "Participant" shall also include, where and as applicable a Rebadged Employee and a Grandfathered Legacy
Schering Employee who has experienced a Grandfathered Legacy Schering Termination, in each case, who has signed and, if
a revocation period is applicable, not revoked a Release of Claims in a form that is satisfactory to the Employer in its sole and
absolute discretion.

2.35    “ Plan ” means the Merck & Co., Inc., U.S. Separation Benefits Plan as set forth herein, and as may be amended from
time to time.

2.36    “ Plan Administrator ” means the Parent or its delegate.

2.37    “ Plan Year ” means the calendar year January 1 through December 31 on which the records of the Plan are kept.

2.38    “ Qualified Alternative Position ” means a position with an Employer, the Parent or any of its subsidiaries which
does not result in either of the following:

(i) a reduction in the Eligible Employee's Base Pay Rate; or

(ii) (A) for an Eligible Employee who is not eligible to participate in the Company’s sales incentive plan, relocation of
the Eligible Employee's principal business location to a new principal business location (x) where the distance between
the Eligible Employee’s residence immediately prior to the relocation and his/her new principal business location is more
than 50 miles greater than the distance between the the Eligible Employee's residence and his/her principal business
location immediately prior to the relocation or (y) that is more than 75 miles from the Eligible Employee's residence
immediately prior to the relocation and not closer to the Eligible Employee's residence at that time, and (B) for an
Eligible Employee who is eligible to participate in the Company’s sales incentive plan or who qualifies as other field-
based personnel, relocation of the Eligible Employee's geographic workload center location to a new geographic
workload center location (x) where the distance between the Eligible Employee’s residence immediately prior to the
relocation and his/her new geographic workload center location is more than 50 miles greater than the distance between
the Eligible Employee's residence and his/her geographic workload center location immediately prior to the relocation
and (y) more than 75 miles from the Eligible Employee's residence at the time the Negotiated Job Offer is extended and
not closer to the Eligible Employee's residence at that time.

9

    
The Employer, in its sole and absolute discretion, will determine (i) whether an Eligible Employee qualifies as other
field-based personnel, (ii) distance using a nationally recognized mapping service, (iii) principal business location, and
(iv) the geographic workload center.

Whether a position is a Qualified Alternative Position shall be determined at the time such position is offered or
communicated to the Eligible Employee or to the Grandfathered Legacy Schering Employee by his/her manager.

2.39    " Rebadged Employee ” means an Eligible Employee whose employment with the Employer is terminated by the
Employer in connection with the outsourcing of work by the Employer in a transaction with a third‑party vendor where the
Eligible Employee is offered a Negotiated Job Offer and:

(a) (i) accepts the Negotiated Job Offer; or (ii) declines the Negotiated Job Offer, provided the Negotiated Job Offer is
not an Offer Outside Geographic Parameters; and

(b) remains employed with the Employer through the date established by the Employer as the employee's Separation
Date unless the Employer expressly waives this provision.

Whether an Eligible Employee is a Rebadged Employee shall be determined by the Employer or Parent in its sole discretion.
An Eligible Employee shall not be considered to be a Rebadged Employee if his or her employment with the Employer (i)
does not end as set forth in this Section 2.38 (ii) ends due to the declination of a Negotiated Job Offer that is an Offer Outside
Geographic Parameters, or (iii) ends as a result of any of the events described in Section 3.1(e).

For the avoidance of doubt, a Rebadged Employee shall not be considered to have experienced a Termination due to
Workforce Restructuring for purposes of the Plan.

2.40      “ Release of Claims ” means the agreement that an Eligible Employee must execute in order to become a Participant
and to receive Separation Plan Benefits, which shall be prepared by the Employer or the Parent and shall contain such terms
and conditions as determined by the Employer or the Parent, including but not limited to a general release of claims, known
or unknown, that the Eligible Employee may have against the Employer (and the Parent and any of its subsidiaries and/or
affiliates), including claims related to the employment and termination of employment of the Eligible Employee; such
Release of Claims may also contain, in the Employer’s or the Parent's discretion, other terms and conditions including,
without limitation, cooperation in litigation, non-disclosure, confidentiality, non-disparagement, non-solicitation and/or non-
competition provisions.

2.41    “ Section 16 Officer ” means an “officer” as such term is defined in Rule 16(a)-1(f) of the Securities Exchange Act of
1934 of the Parent who is also an Eligible Employee of an Employer.

2.42    “ Separation Benefits ” means the benefits provided pursuant to Sections 4.2 and 4.3 of this Plan.

2.43    “ Separation Date ” means the Eligible Employee’s last day of employment with the Employer due to a Termination
due to Workforce Restructuring or, in the case of a Rebadged Employee, due to the outsourcing transaction. The Separation
Date of an Eligible Employee who dies prior to his or her scheduled Separation Date but after he or she was notified of a
scheduled Separation Date shall be deemed to have occurred on the day before his/her date of death. For

10

Grandfathered Legacy Schering Employees, "Separation Date" means the last day of employment with the Employer due to a
Grandfathered Legacy Schering Termination.

2.44    “ Separation Pay ” means the cash benefit payable under this Plan pursuant to Section 4.1 or to a Rebadged
Employee pursuant to Section 4.5.

2.45    “ Separation Plan Benefits ” means, collectively, Separation Pay, Separation Benefits and Outplacement Benefits.

2.46     "Termination Due to Non-Performance " means a termination of an Eligible Employee's employment as
determined and caused by the Employer due to the Eligible Employee's failure to perform his or her job assignments in a
satisfactory manner.

2.47    “ Termination due to Workforce Restructuring ” means the termination of an Eligible Employee's employment as
determined and caused by the Employer due to:

(a)the elimination of an Eligible Employee's job;

(b)organizational changes; or

(c)a general reduction of the workforce.

Whether an Eligible Employee's job is eliminated is determined by the Employer but excludes the maintenance of the
position with the elimination of a part-time or job share arrangement or other flexible work arrangement.

Organizational changes are determined by the Employer and include the following actions: discontinuance of operations,
location closings, corporate restructuring but exclude a reduction in job title, grade or band level, Base Pay Rate, short term
incentive opportunity (e.g., cash bonuses under any bonus or incentive plan or program of the Parent), long-term incentive
compensation opportunity, equity compensation opportunity and/or other forms of remuneration of an Eligible Employee
with or without a change in the Eligible Employee's job duties where such reduction is due to (i) a general change in the
Employer’s or the Parent’s compensation framework as it applies to similarly situated Eligible Employees (e.g., a change in
the general compensation framework applicable to similar jobs with the Employer, or an identifiable segment of the
Employer such as a subsidiary, division or department); (ii) an action to align the Eligible Employee with the Employer's or
the Parent's compensation and career framework as it applies to similarly situated Eligible Employees; or (iii) a demotion or
other action taken as a result of the Eligible Employee's performance or behaviors.

An Eligible Employee shall not be considered to have incurred a Termination due to Workforce Restructuring if his or her
employment with the Employer (i) does not end due to this Section 2.46 (a), (b) or (c) or (ii) ends as a result of any of the
events described in Section 3.1(d).

For the avoidance of doubt with respect to outsourcing transactions, (x) an Eligible Employee whose employment with the
Employer is terminated by the Employer in connection with the outsourcing of work by the Employer in a transaction with a
third‑party vendor where the individual is offered a Negotiated Job Offer and declines the Negotiated Job Offer because it is
an Offer Outside Geographic Parameters, is considered to have incurred a Termination due to Workforce Restructuring
provided his or her employment with the Employer does not end as a result of any of the events described in Section 3.1 (d),
and (y) a Rebadged Employee shall not be considered to have experienced a Termination due to Workforce Restructuring for
purposes the Plan.

11

 
2.48    “ U.S. Expatriate ” means a U.S. citizen or individual with U.S. Permanent Resident status who is employed by the
Employer and on assignment outside the U.S. and who is not an Excluded Person .

12

SECTION 3
ELIGIBILITY FOR BENEFITS

3.1      Eligibility .

(a)    An Eligible Employee will be eligible for Separation Plan Benefits described in Section 4 (excluding Section

4.5) when he/she experiences a Termination due to Workforce Restructuring; provided, however, that a Legacy Inspire
Employee will be eligible for Separation Plan Benefits described in Section 4 (excluding Section 4.5) only if he/she
experiences a Termination due to Workforce Restructuring on or after May 17, 2013. A Grandfathered Legacy Schering
Employee will be eligible for Separation Plan Benefits described in Section 4 (excluding Section 4.5) if he or she experiences
a Grandfathered Legacy Schering Termination. Separation Plan Benefits shall be provided under this Plan to an Eligible
Employee who experiences a Termination due to Workforce Restructuring or to a Grandfathered Legacy Schering Employee
who experiences a Grandfathered Legacy Schering Termination, in each case only if the Eligible Employee or Grandfathered
Legacy Schering Employee has executed and, if a revocation period is applicable, not revoked a Release of Claims in a form
satisfactory to the Employer or Parent in its sole and nonreviewable discretion. An Eligible Employee or a Grandfathered
Legacy Schering Employee who has executed and, if a revocation period is applicable, not revoked a Release of Claims is a
Participant.

(b)    A Rebadged Employee will be eligible for Separation Pay described in Section 4.5; provided, however, that a
Rebadged Employee who is a Legacy Inspire Employee will be eligible for Separation Pay described in Section 4.5 only if
his/her employment with an Employer is terminated by the Employer in connection with the outsourcing of work on or after
May 17, 2013. Separation Pay shall be provided under this Plan to a Rebadged Employee only if the Rebadged Employee has
executed and, if a revocation period is applicable, not revoked a Release of Claims in a form satisfactory to the Employer or
Parent in its sole and nonreviewable discretion. A Rebadged Employee who has executed and, if a revocation period is
applicable, not revoked a Release of Claims is a Participant. A Rebadged Employee is not eligible for Separation Benefits or
Outplacement Benefits.

(c)    An Eligible Employee will also be entitled to receive those pension benefits set forth in Schedule D (Change in
Control/Pension) and retiree medical benefits set forth in Schedule E (Change in Control/Retiree Medical) if (i) a Change in
Control has occurred and (ii) within two years thereafter, the Eligible Employee’s employment with the Employer (or
successor employer) is terminated by the Employer (or successor employer) for any reason other than for Misconduct, death
or "Permanent Disability" (as such term is defined in the CIC Plan), and (iii) the Eligible Employee signs and returns the
release of claims in use under the CIC Plan and in accordance with the process established under the CIC Plan.

(d)    Notwithstanding anything herein to the contrary, an Eligible Employee shall not be considered to have incurred

a Termination due to Workforce Restructuring under the Plan if his or her employment ends as a result of any of the
following events:

(i)     a divestiture of a subsidiary, division or other identifiable segment of the Employer or Parent or a

transfer of the Eligible Employee to a joint venture or other business entity in which the Employer or the Parent
directly or indirectly will own some outstanding voting or other ownership interest, in each case where either

(x) the Eligible Employee is offered and accepts, or continues in, a Negotiated Job Offer; or

13

(y) the Eligible Employee is offered and declines a Negotiated Job Offer, unless the Negotiated Job
Offer is an Offer Outside Geographic Parameters with the acquiring entity or vendor;

(ii)         the Employer's decision to outsource work to a third-party vendor where the Eligible Employee is a

Rebadged Employee;

(iii)    the Eligible Employee's voluntary resignation for any reason including after reaching early or normal

retirement age under the retirement plan applicable to the Eligible Employee;

(iv)     a termination for Misconduct;

(v)     death (unless the Eligible Employee is not a Grandfathered Legacy Schering Employee and dies after

he/she has been notified of his/her scheduled Separation Date but before the Separation Date occurs and a valid
Release of Claims is executed by the Eligible Employee's estate) in which case the Eligible Employee's Separation
Date shall be deemed to have occurred on the day before his/her date of death;

(vi)     the Eligible Employee terminating employment with the Employer prior to the date identified as the
date the employee would experience a Termination due to Workforce Restructuring unless the Employer expressly
agreed to waive this provision;

(vii)    failure by the Eligible Employee (other than a Legacy Schering Grandfathered Employee) to return to

work at the Employer (or the Parent or any of its subsidiaries) for any reason, including, but not limited to the Eligible
Employee’s failure to secure a position at the Employer (or the Parent or any of its subsidiaries) upon a return from a
leave of absence for any reason; or

(viii)    failure by a Legacy Schering Grandfathered Employee to return to work at the Employer (or the Parent

or any of its subsidiaries) within two years of his or her first day absent due to disability; or

(ix)    the Eligible Employee's decision to decline a Qualified Alternative Position for any reason (including,
but not limited to because the employee is a part-time employee and is offered a full-time position, is a shift-worker
and the position offered is on a different shift or has a job share or other flexible work arrangement and the position
offered is not a job share or does not include a flexible work arrangement) that is offered to the Eligible Employee
prior to the Eligible Employee's Separation Date; or

(x)    the Eligible Employee's decision to accept an alternate position with the Employer, Parent or any of its

subsidiaries (whether or not the position is a Qualified Alternative Position) and to later decline it; or

(xi)    Termination Due to Non-Performance.

(e)    Notwithstanding anything herein to the contrary, an Eligible Employee shall not be considered to be a Rebadged

Employee under the Plan if his or her employment ends as a result of any of the following events:

(i)     a divestiture of a subsidiary, division or other identifiable segment of the Employer or Parent or a

transfer of the Eligible Employee to a joint venture or other business entity in which the Employer or the Parent
directly or indirectly will own some outstanding voting or other ownership interest;

(ii)         the Employer's decision to outsource work to a third-party vendor where the Eligible Employee is

offered a Negotiated Job Offer and declines it because it is an Offer Outside Geographic Parameters;

14

(iii)    the Eligible Employee's voluntary resignation for any reason including after reaching early or normal

retirement age under the retirement plan applicable to the Eligible Employee;

(iv)     a termination for Misconduct;

(v)     death (unless the Eligible Employee is not a Grandfathered Legacy Schering Employee and dies after

he/she has been notified of his/her scheduled Separation Date but before the Separation Date occurs and a valid
Release of Claims is executed by the Eligible Employee's estate) in which case the Eligible Employee's Separation
Date shall be deemed to have occurred on the day before his/her date of death;

(vi)     the Eligible Employee terminating employment with the Employer prior to the date identified by the

Employer as the Separation Date unless the Employer expressly agreed to waive this provision;

(vii)    failure by the Eligible Employee (other than a Legacy Schering Grandfathered Employee) to return to

work at the Employer (or the Parent or any of its subsidiaries) for any reason, including, but not limited to the Eligible
Employee’s failure to secure a position at the Employer (or the Parent or any of its subsidiaries) upon a return from a
leave of absence for any reason;

(viii)    failure by a Legacy Schering Grandfathered Employee to return to work at the Employer (or the Parent

or any of its subsidiaries) within two years of his or her first day absent due to disability; or

(ix)    Termination Due to Non-Performance.

3.2      Termination of Eligibility for Benefits . A Participant shall cease to participate in the Plan, and all Separation Plan
Benefits shall cease upon the occurrence of the earliest of:

(a)      Termination of the Plan prior to, or more than two years following, a Change in Control;

(b)      Inability of the Employer to pay Separation Plan Benefits when due;

(c)      Completion of payment to the Participant of the Separation Plan Benefits for which the Participant is

eligible; and

(d)      The Claims Reviewer's determination, in its sole discretion, of the occurrence of the Eligible Employee’s
Misconduct, regardless of whether such determination occurs before or after the Eligible Employee’s Separation Date,
unless the Claims Reviewer determines in its sole discretion that Misconduct shall not cause the cessation of Separation
Plan Benefits in a particular case.

15

SECTION 4
BENEFITS

4.1      Separation Pay . Separation Pay shall be payable under this Plan to a Participant who is not a Rebadged Employee as
set forth on Schedule B-1. The terms of Schedule B-1 are hereby fully incorporated into and shall be considered as part of
Section 4 of this Plan. For Separation Pay payable under this Plan to a Rebadged Employee, see Section 4.5 of this Plan.

4.2    

Medical and Dental Benefits For Participants With a Separation Date Before January 1, 2017:

(a)     A Participant who is covered under any of the Employer's group employee medical and dental plans as of his or

her Separation Date shall be provided the opportunity to elect to continue such active coverage, as it may be amended from
time to time, in accordance with the provisions of the Consolidated Omnibus Budget Reconciliation Act of 1985, Section
4980B of the Code, and Section 601, et seq., of ERISA (“COBRA”) and in accordance with the Employer’s regular COBRA
coverage payment practices, at active employee rates, as the same may be changed from time to time, for his or her Benefits
Continuation Period, as determined in accordance with Schedule B-2. The terms of such Schedule B-2 are hereby fully
incorporated into and shall be considered as part of Section 4 of this Plan.

(b)    A Participant who does not elect to continue employee medical and/or dental coverage in accordance with
COBRA shall not be eligible for employee medical and/or dental benefit continuation coverage at active employee rates
during his or her Benefits Continuation Period nor will he or she be eligible to continue such active coverage during the
COBRA continuation period at the full COBRA premium.

(c)     A Participant who, prior to his or her Separation Date, had elected no employee medical or dental coverage

under the applicable medical or dental plan will not be permitted to change from no medical and/or dental coverage to
coverage as a result of a Termination due to Workforce Restructuring or a Grandfathered Legacy Schering Termination.

(d) Provided the Participant elects to continue coverage under COBRA, employe medical and dental continuation
coverage, as it may be amended from time to time, at active rates shall begin on the first day of the month
coincident with or following the Participant's Separation Date and shall end on the last day of the month in which
the Benefits Continuation Period ends, provided the Participant pays the required contributions for coverage in the
time and manner required under COBRA. If the Participant fails to pay the required contributions for coverage in
the time and manner required under COBRA, or the Participant elects to terminate active medical and/or dental
coverage, coverage will end as of the last day of the month for which the contribution was paid and it will not be
reinstated. If the Participant has dental coverage on the last day of the Benefits Continuation Period, the
Participant may be eligible to continue the dental coverage in effect at the end of the Benefits Continuation Period
for the remaining COBRA period, if any, in accordance with COBRA by paying the full COBRA premium. If the
Participant is eligible to participate in the Merck Retiree Medical Plan as of his or her Separation Date at
subsidized or unsubsidized retiree rates, see Section (e) below.

16

(e)     If, as of his or her Separation Date, a Participant is eligible to participate in the Merck Retiree Medical Plan at

subsidized or unsubsidized rates, then he or she (i) shall be eligible to continue employee medical and dental benefits in
accordance with this Section 4.2 and, (ii) if eligible for subsidized rates, following the completion of the Benefits
Continuation Period, shall be eligible for retiree medical benefits at subsidized rates under the terms of the Merck Retiree
Medical Plan applicable to such Participant, as it may be amended from time to time, provided that those eligible dependents
who are age 65 or older and Medicare-eligible will only be eligible to participate in the Merck HRA component of the Merck
Retiree Medical Plan, and (iii) if eligible for unsubsidized rates, following the completion of the Benefits Continuation Period
and, if applicable, the COBRA period described in Section (f) below, shall be eligible for retiree medical benefits at
unsubsidized rates under the terms of the Merck Retiree Medical Plan applicable to such Participant, as it may be amended
from time to time provided that those eligible dependents who are age 65 or older and Medicare-eligible will not be eligible
to participate in the Merck Retiree Medical Plan. If a Participant is not eligible to continue employee medical coverage
during the Benefits Continuation Period (e.g., because the Participant had no active coverage on his/her Separation Date or
he/she failed to timely elect continuation coverage under COBRA) or the Participant's employee medical coverage ends
during the Benefits Continuation Period (for any reason, including non-payment), the Participant cannot enroll for medical
coverage as a retiree until the end of the Benefits Continuation Period. If the Participant elects to end the Benefits
Continuation Period earlier than the period set forth on Schedule B-2 as permitted in Section 2.4, all employee medical
and/or dental benefit coverage that the Participant would otherwise have been eligible to receive during the maximum
Benefits Continuation Period will be permanently and irrevocably forfeited. A Participant cannot be covered as an employee
and as a retiree (even under the retiree no coverage option, if available) in a medical plan of an Employer (or Parent) during
the same period; provided, however, that a Participant may be covered through COBRA at full COBRA rates (for the
remainder of the COBRA period only) for dental coverage even if during that period the Participant is also covered as a
retiree for medical coverage.

(f)    If, as of his or her Separation Date, a Participant is not eligible to participate in a retiree medical plan of an

Employer (or Parent) or is eligible to participate in a retiree medical the Merck Retiree Medical Plan at unsubsidized rates,
then following the completion of the Benefits Continuation Period (provided coverage has not terminated prior thereto for
any reason, including failure to pay the required contribution) he or she may be eligible to continue coverage in effect at the
end of the Benefits Continuation Period for the remaining COBRA period, if any, in accordance with COBRA by paying the
full COBRA premium.

(g)    Rebadged Employees are not eligible for continuation of active medical and dental benefits at active

contribution rates during the Benefits Continuation Period described in this Section 4.2.

Medical and Dental Benefits For Participants With a Separation Date On or After January 1, 2017:

(a)     A Participant who is covered under any of the Employer's group employee medical and dental plans as of his or

her Separation Date will be provided the opportunity to continue such employee coverage during his or her Benefits
Continuation Period, as determined in accordance with Schedule B-2 of this SPD. as such coverage may be amended from
time to time, in accordance with the terms and conditions of such plans, provided the Participant timely pays the required
contribution to continue coverage. The required contribution is calculated at active employee rates, as the same may be
changed from time to time, during his or her Benefits Continuation Period.

17

(b)     A Participant who, prior to his or her Separation Date, had elected no employee medical or dental coverage
under the applicable employee medical or dental plan will not be permitted to change from no medical and/or dental coverage
to coverage as a result of a Termination due to Workforce Restructuring.

(c)     Employee medical and dental continuation coverage, as it may be amended from time to time, at active rates

shall continue during the Benefits Continuation Period. The Benefits Continuation Period begins on the first day of the month
following the Participant's Separation Date and shall end on the last day of the month in which the Benefits Continuation
Period ends as determined in accordance with Schedule B-2 of this SPD, provided the Participant pays the required
contributions for coverage in the time and manner required. If the Participant fails to pay the required contributions for
coverage in the time and manner required, or the Participant elects to terminate active medical and/or dental coverage,
coverage will end as of the last day of the month for which the contribution was paid and it will not be reinstated during the
Benefits Continuation Period. If the Participant has medical and/or dental coverage on the last day of the Benefits
Continuation Period, the Participant may be eligible to continue coverage in effect at the end of the Benefits Continuation
Period in accordance with COBRA by timely electing and paying the full COBRA premium.

(d)     If, as of his or her Separation Date, a Participant is eligible to participate in the Merck Retiree Medical Plan at
subsidized rates, then he or she (i) shall be eligible to continue employee medical and dental benefits in accordance with this
Section 4.2 and, (ii) following the completion of the Benefits Continuation Period, shall be eligible for retiree medical
benefits at subsidized rates under the Merck Retiree Medical Plan, as it may be amended from time to time, provided that
those eligible dependents who are age 65 or older and Medicare-eligible will only be eligible to participate in the Merck HRA
component of the Merck Retiree Medical Plan. If a Participant is not eligible to continue active medical coverage during the
Benefits Continuation Period (i.e., because the Participant had no employee coverage on his/her Separation) or the
Participant's employee medical coverage ends during the Benefits Continuation Period (for any reason, including non-
payment), the Participant cannot enroll for medical coverage as a retiree until the end of the Benefits Continuation Period. If
the Participant elects to end the Benefits Continuation Period earlier than the period set forth on Schedule B-2 as permitted in
Section 2.4, all employee medical and/or dental benefit coverage that the Participant would otherwise have been eligible to
receive during the maximum Benefits Continuation Period will be permanently and irrevocably forfeited. A Participant
cannot be covered as an employee and as a retiree (even under the retiree no coverage option, if available) in a medical plan
of an Employer (or Parent) during the same period; provided, however, that a Participant may be covered through COBRA at
full COBRA rates for dental coverage even if during that period the Participant is also covered as a retiree for medical
coverage.

(e)    Rebadged Employees are not eligible for continuation of employee medical and dental benefits at active

contribution rates during the Benefits Continuation Period described in this Section 4.2.

4.3     Life Insurance Benefits

(a)    A Participant shall be eligible to continue Basic Life Insurance coverage at no cost to the Participant during his
or her Benefits Continuation Period, as determined in accordance with Schedule B-2, subject to and in accordance with the
terms of the applicable life insurance plan as

18

they may be amended from time to time. The Participant is responsible for paying applicable tax on imputed income, if any,
for Basic Life Insurance coverage during his or her Benefits Continuation Period. The terms of such Schedule B-2 are hereby
fully incorporated into and shall be considered as part of Section 4 of this Plan.

(b)     Basic Life Insurance coverage shall end on the last day of the month in which the Benefits Continuation Period

ends. If the Participant elects to end the Benefits Continuation Period earlier than the period set forth on Schedule B-2 as
permitted in Section 2.4, all Basic Life Insurance coverage that the Participant would otherwise have been eligible to receive
during the maximum Benefits Continuation Period will be permanently and irrevocably forfeited.

(c)     Rebadged Employees are not eligible for the life insurance benefits described in this Section 4.3.

4.4     Outplacement Benefits . Benefits for outplacement counseling or other outplacement services, as set forth in Schedule
C, will be made available to a Participant. The terms of such Schedule C are hereby fully incorporated into and shall be
considered as part of Section 4 of this Plan. Outplacement benefits shall be provided in kind; cash shall not be paid in lieu of
outplacement benefits nor will Separation Pay be increased if a Participant declines or does not use the outplacement
benefits. Rebadged Employees are not eligible for outplacement benefits described in this Section 4.4.

4.5.     Separation Pay for Rebadged Employees . A Rebadged Employee who is a Participant shall be eligible for
Separation Pay under this Plan in an amount equal to 50% of the Separation Pay that would be payable had he or she
experienced a Termination due to Workforce Restructuring.

For the avoidance of doubt, a Rebadged Employee shall not be eligible for any Separation Plan Benefits other than the
Separation Pay described in this Section 4.5.

4.6     Reduction of Benefits . Notwithstanding anything in this Plan to the contrary, a Participant's Separation Pay
(including Separation Pay described in Section 4.5) and Separation Benefits, if applicable, shall be reduced by:

(a)     any amount the Plan Administrator reasonably concludes the Participant owes the Employer (or the Parent or
any subsidiary or affiliate of the Parent) including, without limitation, unpaid bills under the corporate credit card program,
and for vacation used, but not earned;

(b)     any severance or severance type benefits that the Employer (or the Parent or any subsidiary or affiliate of the

Parent) must pay to a Participant under applicable law;

(c)     where permitted by law, any payments received by the Participant pursuant to state workers compensation laws;

(d)     short-term disability benefits where state law does not permit Separation Pay to be offset from short-term

disability benefits (or where the Employer in its sole and absolute discretion determines it is administratively easier for the
Employer to reduce Separation Pay by short-term disability benefits in lieu of reducing short-term disability benefits by
Separation Pay);

(e)    For Participants whose employment ends on or after January 1, 2017 who experienced one or more one-way

transfers from a non-U.S. subsidiary to another non-U.S. subsidiary and/or to a U.S. subsidiary, any severance or severance
type benefits paid by the Parent or any subsidiary or affiliate of the Parent to the Participant as a result of such transfer(s),
provided

19

such amount is determined using the exchange rate on the date(s) of the one-way transfer(s) or the Separation Date,
whichever provides the lowest amount.

Notwithstanding anything in the Plan to the contrary, a Participant’s Separation Pay (including Separation Pay described in
Section 4.5) and Separation Benefits are not meant to duplicate pay and benefits provided by the Employer (or the Parent or
any of its subsidiaries) in connection with any Participant's Termination due to Workforce Restructuring or in connection
with a Participant's termination due to the outsourcing of work to a third-party vendor, including pay and benefits under the
federal Worker Adjustment Retraining and Notification Act and any state or local equivalent (collectively, the "WARN
Act"). If the Plan Administrator determines that a Participant is entitled to WARN Act damages or WARN Act notice, the
Plan Administrator in its sole and absolute discretion may reduce the Participant's Separation Pay and Separation Benefits
under the Plan by the WARN Act damages or pay and benefits after receiving WARN Act notice, but not below $500, with
the remaining Separation Pay and Separation Benefits provided to the Participant in accordance with the terms of the Plan in
satisfaction of the Participant's WARN Act notice rights or damages. In all other cases, Separation Pay paid under the Plan in
excess of $500 will be treated as having been paid to satisfy any WARN Act damages, if applicable.

20

SECTION 5
FORM AND TIMING OF BENEFITS; FORFEITURE
AND REPAYMENT OF BENEFITS

5.1     Form and Time of Payment

(a)    Except as otherwise provided in subsection (b), Separation Pay, less taxes and applicable deductions shall be

paid in a lump sum as soon as practicable after the Participant's Termination due to Workforce Restructuring (or in the case
of a Rebadged Employee, after termination of employment due to the outsourcing transaction) and the expiration of any
period during which the Participant may consider, sign and, if a revocation period is applicable, revoke the Release of
Claims, but in no event later than March 15 of the calendar year following the year of a Participant's Separation Date.

(b)    If it is determined by the Employer or Parent in its discretion, that (i) the Participant is, as of his or her
Separation Date, a "specified employee" (as such term is defined in Section 409A(2)(B) of the Code); and (ii) the Separation
Pay payable pursuant to the terms of the Plan constitutes nonqualified deferred compensation that would subject the
Participant to “additional tax” under Section 409A(a)(1)(B) of the Code (the "409A Tax"), then the payment of Separation
Pay will be postponed to the first business day of the seventh month following the Separation Date or, if earlier, the date of
the Participant's death.

5.1      Taxes . Separation Pay payable under this Plan shall be subject to the withholding of appropriate federal, state and
local taxes. 

Notwithstanding anything in this Plan to the contrary, the Employer or Parent will take such actions as it deems necessary, in
its sole and absolute discretion, to avoid the imposition of a 409A Tax at such time and in such manner as permitted under
Section 409A of the Code, including, but not limited to, reducing or eliminating benefits and changing the time or form of
payment of benefits.

5.3     Forfeiture of Benefits . The Employer reserves the right, in its sole and absolute discretion, to cancel all Separation
Plan Benefits and seek the return of Separation Pay in the event a Participant engages in any activity that the Employer
considers detrimental to its interests (or the interests of the Parent or any of its subsidiaries) as determined by the Parent’s
Executive Vice President and General Counsel and the Parent’s Executive Vice President, Human Resources. Activities that
the Employer considers detrimental to its interest (or the interests of the Parent or any of its subsidiaries) include, but are not
limited to:

(a)    breach of any obligations of the Participant's terms and conditions of employment;

(b)    making false or misleading statements about the Employer, the Parent or any of its subsidiaries or their products,
officers or employees to competitors, customers, potential customers of the Employer, the Parent or any of its subsidiaries or
to current or former employees of the Employer, the Parent or any of its subsidiaries; and

(c)    breaching any terms of the Release of Claims, including any non-solicitation or non-competition provisions, if

applicable.

21

5.4      Cessation of Separation Pay and Separation Benefits . Separation Pay, Outplacement Benefits and Separation
Benefits shall cease in the event a Participant is rehired by the Employer, the Parent or one of its subsidiaries or affiliates
other than Telerx Marketing, Inc.

5.5     Return of Separation Pay . Upon the occurrence of an event described in Section 5.3 or 5.4 of this Plan, the
Participant shall repay to the Employer that portion of the lump sum amount that would not have been paid had the
Separation Pay been paid in weekly installments from the Participant's Separation Date. If the Participant receives short-term
disability benefits from the Employer after his or her Separation Date, the Employer reserves the right to seek repayment by
the Participant of that portion of the Separation Pay that would not have been paid in accordance with Section 4.6 had the
Separation Pay been paid in installments.

5.6      Death of Participant .

For Participants Who Die Before January 1, 2017:

If a Participant dies before January 1, 2017 following his or her Separation Date and a valid Release of Claims was signed by
the Participant or is signed by the Participant's estate then

(a) any unpaid Separation Pay will be paid to the Participant's estate; and

(b) if the Participant was eligible to continue medical and/or dental coverage during the Benefits Continuation

Period on the Participant's date of death and the Participant’s surviving dependents were covered under the Participant's
medical and dental coverages (other than coverages applicable to retirees and their dependents) on that date, they may
continue such employee coverage for the balance of the Benefits Continuation Period, provided they continue to remain
eligible dependents and they pay the applicable contributions at active employee rates, as they may change from time to time,
to continue coverage. Thereafter, if, as of his or her Separation Date, such Participant (i) was eligible to participate in the
Merck Retiree Medical Plan at subsidized rates, then following the completion of the Benefits Continuation Period, surviving
eligible dependents shall be eligible for retiree medical benefits at subsidized rates under the terms of the Merck Retiree
Medical Plan applicable to such Participant, as may be amended from time to time, provided that those eligible dependents
who are age 65 or older and Medicare-eligible will only be eligible to participate in the Merck HRA component of the Merck
Retiree Medical Plan, or (ii) was eligible to participate in the Merck Retiree Medical Plan at unsubsidized rates, then
following the completion of the Benefits Continuation Period the surviving dependents may be eligible to continue coverage
in effect at the end of the Benefits Continuation Period for the remaining COBRA period, if any, in accordance with COBRA
by paying the full COBRA premium and thereafter may be eligible for retiree medical benefits at unsubsidized rates under
the terms of the Merck Retiree Medical Plan applicable to such Participant, as may be amended from time to time, provided
that those eligible dependents who are age 65 or older and Medicare-eligible will not be eligible to participate in the Merck
Retiree Medical Plan or (iii) was not eligible to participate in the Merck Retiree Medical Plan at subsidized or unsubsidized
rates, then following the completion of the Benefits Continuation Period the surviving dependents may be eligible to continue
coverage in effect at the end of the Benefits Continuation Period for the remaining COBRA period, if any, in accordance with
COBRA by paying the full COBRA premium, or (iv) was not eligible to participate in the Merck Retiree Medical Plan at
subsidized or unsubsidized rates but had at least 25 years of service as of his/her date of death, then following the completion
of the Benefits Continuation Period, surviving eligible dependents shall be eligible for medical benefits at subsidized rates
under the terms of medical plan that would have been applicable to such Participant if he/she had been eligible for long term
disability benefits, as may be amended from time to time; and

22

(c) if the if the Participant was eligible to continue medical coverage during the Benefits Continuation Period
on the Participant's date of death and the Participant’s surviving dependents were not covered under the Participant's medical
coverage at the time of the Participant’s death or if the Participant was not eligible to continue medical coverage during the
Benefits Continuation Period and, in either case, if as of his or her Separation Date, such Participant (i) was eligible to
participate in the Merck Retiree Medical Plan at subsidized or unsubsidized rates, then following the date of death, surviving
eligible dependents who were not then enrolled for coverage under the Participant’s medical coverage shall be eligible to
enroll for retiree medical benefits at the subsidized or unsubsidized rates, as applicable, under the terms of the Merck Retiree
Medical Plan applicable to such Participant, as may be amended from time to time, provided that those eligible dependents
who are age 65 or older and Medicare-eligible will only be eligible to participate in the Merck HRA component of the Merck
Retiree Medical Plan and will only be eligible for such coverage if they are eligible for subsidized coverage (dependents
eligible for unsubsidized coverage are not eligible to participate in the Merck HRA component of the Merck Retiree Medical
Plan), or (ii) was not eligible to participate in the Merck Retiree Medical Plan at subsidized or unsubsidized rates but had at
least 25 years of service as of his/her date of death, then following the date of death, surviving eligible dependents who were
not then enrolled for coverage under the Participant’s medical coverage shall be eligible to enroll for medical benefits at
subsidized rates under the terms of medical plan that would have been applicable to such Participant if he/she had been
eligible for long term disability benefits, as may be amended from time to time.

Medical and dental coverage under this Section 5.6 shall be subject to and in accordance with the terms of the applicable
plans as they may be amended from time to time.

The Separation Date of an Eligible Employee who dies prior to his or her scheduled Separation Date but after he or she was
notified of a scheduled Separation Date shall be deemed to have occurred on the day before his/her date of death.

For Participants Who Die On or After January 1, 2017:

If a Participant dies on or after January 1, 2017 following his or her Separation Date and a valid Release of Claims was
signed by the Participant or is signed by the Participant's estate then

(a) any unpaid Separation Pay will be paid to the Participant's estate; and

(b) if the Participant was eligible to continue medical and/or dental coverage during the Benefits Continuation Period on the
Participant's date of death and the Participant’s surviving dependents were covered under the Participant's medical and
dental coverages at the time of the Participant’s death, they may continue such employee coverage for the balance of the
Benefits Continuation Period, provided they continue to remain eligible dependents and they pay the applicable contributions
at active employee rates, as they may change from time to time, to continue coverage. Thereafter, if, as of his or her
Separation Date, such Participant (i) was eligible to participate in the Merck Retiree Medical Plan at subsidized rates, then
following the completion of the Benefits Continuation Period, surviving eligible dependents shall be eligible for retiree
medical benefits at subsidized rates under the terms of Merck Retiree Medical Plan, as may be amended from time to time,
provided that those eligible dependents who are age 65 or older and Medicare-eligible will only be eligible to participate in
the Merck HRA component of the Merck Retiree Medical Plan, or (ii) was not eligible to participate in the Merck Retiree
Medical Plan at subsidized rates, then following the completion of the Benefits Continuation Period the surviving dependents
may be eligible to continue coverage in effect at the end of the Benefits Continuation Period in accordance with COBRA by
timely electing COBRA coverage and paying the full

23

COBRA premium; or (iii) was not eligible to participate in the Merck Retiree Medical Plan at subsidized rates but had at
least 25 years of service as of his/her Separation Date, then following the completion of the Benefits Continuation Period,
surviving eligible dependents shall be eligible for retiree medical benefits at subsidized rates under the terms of the Merck
Retiree Medical Plan, as may be amended from time to time, provided that those eligible dependents who are age 65 or older
and Medicare-eligible will only be eligible to participate in the Merck HRA component of the Merck Retiree Medical Plan;
and

(c) if the Participant was eligible to continue medical coverage during the Benefits Continuation Period on the Participant's
date of death and the Participant’s surviving dependents were not covered under the Participant's medical coverage at the
time of the Participant’s death or if the Participant was not eligible to continue medical coverage during the Benefits
Continuation Period and, in either case, if as of his or her Separation Date, such Participant (i) was eligible to participate in
the Merck Retiree Medical Plan at subsidized rates, then following the date of death, surviving eligible dependents who were
not then enrolled for coverage under the Participant’s medical coverage shall be eligible to enroll for retiree medical benefits
at subsidized rates under the terms of Merck Retiree Medical Plan, as may be amended from time to time, provided that those
eligible dependents who are age 65 or older and Medicare-eligible will only be eligible to participate in the Merck HRA
component of the Merck Retiree Medical Plan; or (ii) was not eligible to participate in the Merck Retiree Medical Plan at
subsidized rates but had at least 25 years of service as of his/her Separation Date, then following the date of death, surviving
eligible dependents who were not then enrolled for coverage under the Participant’s medical coverage shall be eligible to
enroll for medical benefits at subsidized rates under the terms of the Merck Retiree Medical Plan, as may be amended from
time to time, provided that those eligible dependents who are age 65 or older and Medicare-eligible will only be eligible to
participate in the Merck HRA component of the Merck Retiree Medical Plan.

Medical and dental coverage under this Section 5.6 shall be subject to and in accordance with the terms of the applicable
plans as they may be amended from time to time.

The Separation Date of an Eligible Employee who dies prior to his or her scheduled Separation Date but after he or she was
notified of a scheduled Separation Date shall be deemed to have occurred on the day before his/her date of death.

24

SECTION 6

PLAN ADMINISTRATION

6.1     Plan Administrator . Parent or its delegate is the Plan Administrator for purposes of ERISA.

6.2     Powers and Duties of Plan Administrator . The Plan Administrator or its delegate shall have the full discretionary
power and authority to: (i) construe and interpret the Plan (including, without limitation, supplying omissions from,
correcting deficiencies in, or resolving inconsistencies or ambiguities in, the language of the Plan); (ii) determine all
questions of fact arising under the Plan, including questions as to eligibility for and the amount of benefits; (iii) establish such
rules and regulations (consistent with the terms of the Plan) as it deems necessary or appropriate for administration of the
Plan; (iv) delegate responsibilities to others to assist in administering the Plan; and (v) perform all other acts it believes
reasonable and proper in connection with the administration of the Plan. The Plan Administrator or its delegate shall be
entitled to rely on the records of the Employer in determining any Participant's entitlement to and the amount of benefits
payable under the Plan. Any determination of the Plan Administrator or its delegate, including interpretations of the Plan and
determinations of questions of fact, shall be final and binding on all parties.

With respect to determining claims and appeals for benefits under this Plan, the Claims Reviewer (and its delegate) shall be
deemed to be the delegate of the Plan Administrator and shall have all of the powers and duties of the Plan Administrator
described above.

6.3     Additional Discretionary Authority . The Plan Administrator may, upon written approval of the Parent’s Executive
Vice President, Human Resources (written approval of the Compensation and Benefits Committee of the Board of Directors
of the Parent or its delegate with respect to Section 16 Officers), take the following actions under the Plan:

(a) 

(b) 

eligible for such benefits under Section 3 above;

Employees to execute a Release of Claims; and

grant some, all or any portion of the benefits under this Plan to an employee who would not otherwise be

waive the requirement set forth in Section 3 for any individual Eligible Employee or group of Eligible

(c) 

grant additional Separation Plan Benefits to a Participant.

25

SECTION 7

CLAIMS AND APPEALS PROCEDURES

7.1     Claims .

(a) 

Any request or claim for benefits under the Plan must be filed by a claimant or the claimant’s authorized
representative within 60 days after the date claimant’s employment with an Employer ends; provided, however, for claims
under Section 5.3, claims must be filed within 60 days after the date Separation Plan Benefits are cancelled. 

(b) 

Any request or claim for benefits under the Plan shall be deemed to be filed when a written request made

by the claimant or the claimant's authorized representative addressed to the Claims Reviewer at the address below is received
by the Claims Reviewer.

Claims Reviewer for the Separation Benefits Plan
c/o Secretary of the Merck & Co., Inc. Employee Benefits Committee
Merck & Co., Inc.
2000 Galloping Hill Road
Mailstop K-1 3029
Kenilworth, NJ 07033

The claim for benefits shall be reviewed by, and a determination shall be made by, the Claims Reviewer, within the
timeframe required for notice of adverse benefit determinations described below.

(c)    The Claims Reviewer shall provide written or electronic notification to the claimant or the claimant’s authorized

representative of any “adverse benefit determination.” Such notice shall be provided within a reasonable time but not later
than 90 days after the receipt by the Claims Reviewer of the claimant's claim, unless the Claims Reviewer determines that
special circumstances require an extension of time for processing the claim. If the Claims Reviewer determines that an
extension of time for processing is required, written notice of the extension shall be furnished to the claimant before the
expiration of the initial 90-day period indicating the special circumstances requiring an extension and the date by which the
Claims Reviewer expects to render the benefit determination. No extension can exceed 90 days from the end of the initial 90-
day period (i.e., 180 days from the receipt of the claim by the Claims Reviewer) without the consent of the claimant or the
claimant’s authorized representative.    

(d)    An “adverse benefit determination” is a denial, reduction, or termination of, or a failure to provide or make

payment (in whole or part) for a benefit, including one that is based on a determination of a claimant’s eligibility to
participate in the Plan.

(e)    The notice of adverse benefit determination shall be written in a manner calculated to be understood by the

claimant and shall:    

(i)    set forth the specific reasons for the adverse benefit determination;

(ii)         contain specific references to Plan provisions on which the determination is based;

(iii)    describe any material or information necessary for the claim for benefits to be allowed and an

explanation of why such information is necessary; and    

26

(iv)    describe the Plan’s appeal procedures and the time limits applicable to such procedures, including a

statement of the claimant’s right to bring a civil action under section 502(a) of ERISA following an adverse benefit
determination on review.

7.2     Appeals of Adverse Benefit Determinations .

(a)    Any request to review the Claims Reviewer’s adverse benefit determination under the Plan must be filed by a

claimant or the claimant’s authorized representative in writing within 60 days after receipt by the claimant of written
notification of adverse benefit determination by the Claims Reviewer. If the claimant or the claimant’s authorized
representative fails to file a request for review of the Claims Reviewer’s adverse benefit determination in writing within 60
days after receipt by the claimant of written notification of adverse benefit determination, the Claims Reviewer’s
determination shall become final and conclusive.

(b)    Any request to review an adverse benefit determination under the Plan shall be deemed to be filed when a
written request is made by the claimant or the claimant's authorized representative addressed to the Employee Benefits
Committee at the address below is received by the Secretary of the Employee Benefits Committee.

Merck & Co., Inc. Employee Benefits Committee
c/o Secretary Employee Benefits Committee
Merck & Co., Inc.
2000 Galloping Hill Road
Mailstop K-1 3029
Kenilworth, NJ 07033

(c)    If the claimant or the claimant’s authorized representative timely files a request for review of the Claims
Reviewer’s adverse benefit determination as specified in this Section 7.2, the Employee Benefits Committee shall re-examine
all issues relevant to the original adverse benefit determination taking into account all comments, documents, records, and
other information submitted by the claimant or the claimant’s authorized representative relating to the claim, without regard
to whether such information was submitted or considered in the initial benefit determination. Any such claimant or his or her
duly authorized representative may:

(i)         upon request and free of charge have reasonable access to, and copies of, all documents, records, and
other information relevant to the claimant’s claim for benefits; whether an item is relevant shall be determined by the
Employee Benefits Committee in accordance with 29 CFR 2560.503-1 (m)(8); and

(ii)         submit in writing any comments, documents, records, and other information relating to the claim for

benefits.

(d)    The Claims Reviewer shall provide written or electronic notice to the claimant or the claimant’s authorized
representative of its benefit determination on review. Such notice shall be provided within a reasonable time but not later than
60 days after the receipt by the Claims Reviewer of the claimant's request for review, unless the Claims Reviewer determines
that special circumstances require an extension of time for processing the request for review. If the Claims Reviewer
determines that an extension of time for processing is required, written notice of the extension shall be furnished to the
claimant before the expiration of the initial 60-day period indicating the special circumstances requiring an extension and the
date by which the Claims Reviewer expects to render the benefit determination. No extension can exceed 60 days from the
end of the initial 60-day period (i.e., 120 days from the date the request for review is received by

27

the Claims Reviewer) without the consent of the claimant or the claimant’s authorized representative.

(e)    If the claimant’s appeal is denied, the notice of adverse benefit determination on review shall be written in a

manner calculated to be understood by the claimant and shall:    

(i)         set forth the specific reasons for the adverse benefit determination on review;

(ii) 

contain specific references to Plan provisions on which the

benefit determination is based;

(iii)

contain a statement that the claimant is entitled to receive,

upon request and free of charge, reasonable access to, and copies of, all documents, records, and other information
relevant to the claimant’s claim for benefits; whether an item is relevant shall be determined by the Claims Reviewer
in accordance with 29 CFR 2560.503-1 (m)(8); and

(iv) 

include a statement of the claimant’s right to bring a civil action under section 502(a) of ERISA.

28

SECTION 8

AMENDMENT AND TERMINATION

8.1      Amendment and Termination .

(a)    Except as otherwise set forth in subsection (b) below, Parent or its delegate has the right to amend, suspend or
terminate the Plan at any time without prior notice to or the consent of any employee; provided, however, that amendments
that apply only to Section 16 Officers must also be approved by the Compensation and Benefits Committee of the Board of
Directors of Parent or its delegate. No such amendment shall give the Employer or Parent the right to recover any amount
paid to a Participant prior to the date of such amendment. Any such amendment, however, may cause the cessation and
discontinuance of payments of Separation Plan Benefits to any person or persons under the Plan. Parent may delegate the
authority to amend, suspend or terminate the Plan to the person, entity or committee selected by the Chief Executive Officer
and as set forth in the applicable written corporate grant signed by the Chief Executive Officer (the “Corporate Grant”). Such
Corporate Grant shall allow for the delegation of the authority to an individual, entity or committee; provided the financial
impact of such amendment, suspension or termination does not exceed certain predetermined thresholds identified in the
applicable Corporate Grant. The person, entity or committee provide with the authority to amend, suspend or terminate the
Plan by the Corporate Grant, may further delegate the authority to amend, suspend or terminate the Plan to an individual,
entity or committee, in accordance with the appropriate corporate action. Amendments to the Plan must be in writing and
approved in accordance with the Corporate Grant.

(b)     Except to the extent required by applicable law, for the entirety of the Protection Period, the material terms of

the Plan, including this Section 8.1, shall not be modified in any manner that is materially adverse to a Qualifying Participant.

(c)    Parent or any such successor to Parent, shall pay all legal fees and related expenses (including the costs of
experts, evidence and counsel) reasonably and in good faith incurred by a Qualifying Participant if the Qualifying Participant
prevails on at least one material item of his or her claim for relief in an action (x) by the Qualifying Participant claiming that
the provisions of this Section 8.1 have been violated (but, for the avoidance of doubt, excluding claims for plan benefits in
the ordinary course) and (y) if applicable, by the Employer, Parent or its successor to enforce post-termination covenants
against the Qualifying Participant.

(d)     Definitions . For purposes of this Section 8.1:

(i)    “ Protection Period ” shall mean the period beginning on the date of the Change in Control and ending on

the second anniversary of the date of the Change in Control; and

(ii)    “ Qualifying Participant ” shall mean an individual who is an Eligible Employee or a Participant as of the

date immediately prior to the Change in Control.

29

SECTION 9

GENERAL PROVISIONS

9.1     Unfunded Obligation . Separation Plan Benefits provided under this Plan shall constitute an unfunded obligation of
the Employer. Payments shall be made, as due, from the general funds of the Employer. This Plan shall constitute solely an
unsecured promise by the Employer to pay such benefits to Participants to the extent provided herein.

9.2     Applicable Law . It is intended that the Plan be an "employee welfare benefit plan" within the meaning of Section 3(1)
of ERISA, and the Plan shall be administered in a manner consistent with such intent. The Plan and all rights thereunder shall
be governed and construed in accordance with ERISA and, to the extent not preempted by federal law, with the laws of the
state of New Jersey, wherein venue shall lie for any dispute arising hereunder.

9.3     Severability . If any provision of this Plan shall be held illegal or invalid for any reason, said illegality or invalidity
shall not affect the remaining parts of this Plan, but this Plan shall be construed and enforced as if said illegal or invalid
provision had never been included herein.

9.4     Employment at Will . Nothing contained in this Plan shall give an employee the right to be retained in the
employment of the Employer or shall otherwise modify the employee's at will employment relationship with the Employer.
This Plan is not a contract of employment between the Employer and any employee.

9.5     Heirs, Assigns, and Personal Representatives . The Plan shall be binding upon the heirs, executors, administrators,
successors, and assigns of the parties, including each Participant, present and future.

9.6     Payments to Incompetent Persons, Etc . Any benefit payable to or for the benefit of a minor, an incompetent person
or other person incapable of receipting therefore shall be deemed paid when paid to such person’s guardian or to the party
providing or reasonably appearing to provide for the care of such person, and such payment shall fully discharge the
Employer, Parent, the Plan Administrator, the Claims Administrator and all other parties with respect thereto.

9.7     Lost Payees . Benefits shall be deemed forfeited if the Plan Administrator is unable to locate a Participant to whom
Separation Plan Benefits are due. Such Separation Plan Benefits shall be reinstated if application is made by the Participant
for the forfeited Separation Plan Benefits within one year of the Participant’s Separation Date and while the Plan is in
operation.

30

SCHEDULE A

List of participating Employers:

All U.S. direct and indirect wholly owned subsidiaries of Merck & Co. Inc. excluding the following and their subsidiaries:

• Comsort, Inc.
•

Inspire Pharmaceuticals, Inc. (excluded effective May 16, 2011 through 5/17/2013 ; included effective May 17, 2013
through November 15, 2013 ; excluded effective November 15, 2013)

• TELERx Marketing, Inc.
• Vree Health LLC
• Merck Global Health Innovation Fund, LLC
•
• HMR Weight Management Services Corp. (excluded effective November 18, 2013)

Sirna Therapeutics, Inc. (excluded effective December 31, 2013)

31

SCHEDULE B-1

Separation Pay for Participants with a
Separation Date Occurring on or after January 1, 2013

Amount of Separation Pay in weeks (Annual Base Salary divided by 52)

BAND LEVEL

Band 200

Band 300

Band 400

Band 500

Band 600

Band 700/800

10

10

10

10

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

42

44

46

48

50

52

54

56

58

60

62

64

66

68

70

72

74

76

78

12

12

12

12

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

42

44

46

48

50

52

54

56

58

60

62

64

66

68

70

72

74

76

78

78

18

18

18

18

18

20

22

24

26

28

30

32

34

36

38

40

42

44

46

48

50

52

54

56

58

60

62

64

66

68

70

72

74

76

78

78

78

78

78

32

24

24

24

24

24

26

28

30

32

34

36

38

40

42

44

46

48

50

52

54

56

58

60

62

64

66

68

70

72

74

76

78

78

78

78

78

78

78

78

26

32

32

32

32

34

36

38

40

42

44

46

48

50

52

54

56

58

60

62

64

66

68

70

72

74

76

78

78

78

78

78

78

78

78

78

78

78

78

26

40

40

40

40

42

44

46

48

50

52

54

56

58

60

62

64

66

68

70

72

74

76

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Complete Years
of Continuous
Service at
Separation Date

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38+

SCHEDULE B-2

MEDICAL / DENTAL AND LIFE INSURANCE CONTINUATION

COMPLETE YEARS OF CONTINUOUS SERVICE
AT SEPARATION DATE
< 5
5 – 9.9
10 – 19.9
20+

BENEFITS CONTINUATION PERIOD

26 weeks
39 weeks
52 weeks
78 weeks

33

SCHEDULE C

OUTPLACEMENT BENEFITS

BAND LEVEL

BENEFIT

DURATION

Band 200

Individual Career Transition Seminar
and Counseling

•      2 day Milestones Seminar
•      Up to six (6) individual follow-up

consulting sessions

•      3 months access to Career Resource

Network

Band 300

Career Assistance Program

3 Months

Band 400

Career Transition Service

6 Months

Band 600/500

Executive Service

12 Months

Band 800/700

Senior Executive Service

12 Months

The Outplacement Benefits are provided through a third party vendor. The vendor and/or the programs may change from time to
time.

34

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
SCHEDULE D (Change in Control/Pension) 
Description of Change-in-Control Benefits under the 
Pension Plan

This Schedule describes benefits under the Pension Plan and the Supplemental Plan (as each is defined below)

provided to an Eligible Employee under the Plan if such Eligible Employee signs and returns the Release of Claims in use
under the CIC Plan and in accordance with the process established under the CIC Plan.

I.    If an Eligible Employee’s employment is terminated in circumstances entitling him or her to the benefits provided in
Section 3.1 (c) of the Plan:

1.    For an Eligible Employee who participates in the Retirement Plan for Salaried Employees of MSD or its
successor (the “MSD Pension Plan) and on his or her Separation Date is not at least age 55 with at least ten years of
Credited Service under the MSD Pension Plan but would attain at least age 50 and have at least ten years of Credited
Service under the MSD Pension Plan within two years following the date of the Change in Control (assuming
continued employment during the entirety of such two-year period), then the Eligible Employee shall be deemed to be
eligible for a subsidized early retirement benefit on his “Prior Plan Formula” (as defined in the MSD Pension Plan)
under the MSD Pension Plan commencing in accordance with the terms of the MSD Plan.

2.    For an Eligible Employee who participates in the MSD Pension Plan or the Legacy Schering Retirement
Plan, or their successors (collectively the “Pension Plan”) and on his or her Separation Date is not at least age 65 but
would attain at least age 65 within two years following the date of the Change in Control (assuming continued
employment during the entirety of such two-year period), then the Eligible Employee shall be deemed to be eligible
for a Prior Plan Formula benefit unreduced for early commencement under the Pension Plan commencing in
accordance with the terms of the Pension Plan.

3.    For an Eligible Employee who participates in the MSD Pension Plan and on his or her Separation Date is
not eligible for the “Rule of 85 Transition Benefit” (as such term is defined in the MSD Pension Plan) but would have
been eligible for the Rule of 85 Transition Benefit within two years following the date of the Change in Control
(assuming continued employment during the entirety of such two-year period), then the Eligible Employee shall be
deemed to be eligible for the Rule of 85 Transition Benefit upon commencement of his or her pension benefit under
the MSD Pension Plan.

4,    For an Eligible Employee who participates in the Pension Plan on his or her Separation Date who is not
vested in his or her accrued benefit under the Pension Plan, he or she shall be vested in his accrued benefit under the
Pension Plan on his or her Separation Date.

II.    The benefits described in this Schedule D shall be payable from the Pension Plan and, to the extent that such benefits
cannot be paid from the Pension Plan the Employer may, to the extent it deems necessary or appropriate (including to comply
with applicable law and to preserve grandfathered status of arrangements subject to Section 409A of the Code), cause such
benefits to be paid under a Supplemental Retirement Plan of MSD or the Legacy Schering Benefits Excess Plan, as
applicable and any successors thereto (collectively, the “Supplemental Plan”) or under new arrangements or from the
Employer's general assets.

35

SCHEDULE E (Change in Control/Retiree Medical)

Description of Change-in-Control Benefits under Health Plan

This Schedule describes benefits under the Health Plan provided to an Eligible Employee under the Plan if such

Eligible Employee signs and returns the Release of Claims in use under the CIC Plan and in accordance with the process
established under the CIC Plan.

I.    If an Eligible Employee’s employment is terminated in circumstances entitling him or her to the benefits provided in
Section 3.1 (c) of the Plan:

If the Eligible Employee is eligible to participate in the Health Plan and on his or her Separation Date is not at least
age 55 with the requisite amount of service with an Employer to satisfy the requirements to be considered a retiree eligible
for subsidized retiree medical benefits under the Health Plan but would attain at least age 50 and meet the service
requirements to be considered a retiree eligible for subsidized retiree medical benefits under the Health Plan within two years
following the date of the Change in Control (assuming continued employment during the entirety of such two-year period),
then the Eligible Employee shall be eligible for subsidized retiree medical benefits under the Health Plan on the date his or
her Benefits Continuation Period Ends on the same terms and conditions applicable to salaried U.S.-based employees of the
Employer whose employment terminated the last day of the month prior to the Eligible Employee’s Separation Date who
were treated as retirees eligible for subsidized retiree medical benefits under the Health Plan as of that date.

II.    The Employer may, to the extent it deems necessary or appropriate (including to comply with applicable law and to
preserve grandfathered status of arrangements subject to Section 409A of the Code), cause the benefits set forth in this
Schedule E to be provided from insured arrangements, or pursuant to new arrangements, individual arrangements or
otherwise. Further, notwithstanding anything to the contrary, to the extent any benefits to which an Eligible Employee is
entitled under this Schedule E would reasonably be likely to constitute a discriminatory benefit under Section 105(h) of the
Code or a similar law or regulation at the time the benefit is to be provided to the Eligible Employee, as determined in the
sole discretion of the Parent, the Employer may, to the extent it deems necessary or appropriate (including to comply with
applicable law), modify the benefit so that the benefit would no longer constitute a discriminatory benefit under Section
105(h) of the Code or such similar law, including, but not limited to, eliminating all subsidy from the Parent or the Employer,
requiring that the Eligible Employee pay for participation in the benefit program with after-tax funds or causing the full
employer and employee portions of the cost of the benefit to be imputed as gross income to the Eligible Employee.

III.     For purposes of this Schedule E, “Health Plan” means one or more plans sponsored by the Parent or one of its
subsidiaries that provide medical benefits to Eligible Employees and to former Eligible Employees who are considered
retirees thereunder and to the eligible dependents of each of the foregoing.

36

MERCK & CO., INC. AND SUBSIDIARIES

Computation of Ratios of Earnings to Fixed Charges

($ in millions except ratio data)

Exhibit 12

Income Before Taxes

Add (Subtract):

One-third of rents

Interest expense, gross

Interest capitalized, net of amortization

Equity (income) loss from affiliates, net of

distributions

Earnings as defined

One-third of rents

Interest expense, gross

Preferred stock dividends

Fixed Charges

2016

2015

2014

2013

2012

$

4,659  

$

5,401  

$

17,283  

$

5,545  

$

8,739

Years Ended December 31,

97  

693  

—  

(70)

5,379  

97  

693  

—  

$

$

101  

672  

(3)

(155)

6,016  

101  

672  

—  

$

$

117  

732  

(1)

(72)

18,059  

117  

732  

86  

$

$

122  

801  

(2)

(168)

6,298  

122  

801  

147  

$

$

133

714

(49)

(350)

9,187

133

714

163

790  

$

773  

$

935  

$

1,070  

$

1,010

$

$

$

Ratio of Earnings to Fixed Charges

7  

8  

19  

6  

9

For purposes of computing these ratios, “earnings” consist of income before taxes, one-third of rents (deemed by the Company to be representative of the interest
factor  inherent in rents), interest  expense, interest capitalized,  net of amortization  and equity (income)  loss from affiliates,  net of distributions. “Fixed charges”
consist  of  one-third  of  rents,  interest  expense  as  reported  in  the  consolidated  financial  statements  and  dividends  on  preferred  stock.  Interest  expense  does  not
include interest related to uncertain tax positions.

 
 
 
   
   
   
   
 
 
 
 
 
 
 
 
   
   
   
   
 
   
   
   
   
 
 
 
 
 
 
 
 
 
   
   
   
   
 
 
   
   
   
   
MERCK & CO., INC. SUBSIDIARIES
as of 12/31/2016

Exhibit 21

The following is a list of subsidiaries of the Company, doing business under the name stated.

Name
7728026 Canada Inc.
Aacifar-Produtos Quimicos e Farmaceuticos, Lda
Abmaxis Inc.
Afferent Pharmaceuticals, Inc.
Aptus Health Holdings, Inc.
Aptus Health International, Inc.
Aptus Health, Inc.
Aquaculture Holdings Limited
Aquaculture Vaccines Limited
Ark Products Limited
AVL Holdings Limited
Banyu Pharmaceutical Company, Ltd.
BRC Ltd.
Burgwedel Biotech GmbH
C3i (UK) Limited
C3i Europe EOOD
C3i Japan GK
C3i Services & Technology (Dalian) Co. Ltd.
C3i Support Services Private Limited
C3i, Inc.
Canji, Inc.
cCam Biotherapeutics Ltd.
Cherokee Pharmaceuticals LLC
Comsort, Inc.
Continuum Professional Services Limited
Cooper Veterinary Products (Proprietary) Limited
Coopers Animal Health Limited
Cosmas B.V.
Cubist (UK) Ltd
Cubist Australia Pty Ltd
Cubist Bermuda Ltd.
Cubist Pharmaceuticals (UK) Ltd.
Cubist Pharmaceuticals GmbH
Cubist Pharmaceuticals LLC
Dashtag
Desarrollos Farmaceuticos Y Cosmeticos, S.A.
Dieckmann Arzneimittel GmbH
Diosynth France
Diosynth Holding B.V.

Country or State
of Incorporation
Canada
Portugal
Delaware
California
Delaware
Delaware
Delaware
United Kingdom
United Kingdom
United Kingdom
United Kingdom
Japan
Bermuda
Germany
United Kingdom
Bulgaria
Japan
China
India
New York
Delaware
Israel
Delaware
Delaware
United Kingdom
South Africa
United Kingdom
Netherlands
United Kingdom
Australia
Bermuda
United Kingdom
Switzerland
Delaware
United Kingdom
Spain
Germany
France
Netherlands

Diosynth Limited
Diosynth Produtos Farmo-quimicos Ltda.
Elastec S.R.L.
Essex Italia s.r.l.
Essex Pharmaceuticals, Inc.
Essexfarm, S.A.
European Insurance Risk Excess Designated Activity Company
Farmacox-Companhia Farmaceutica, Lda
Farmasix-Produtos Farmaceuticos, Lda
Financiere MSD
Fontelabor-Produtos Farmaceuticos, Lda.
Frosst Laboratories, Inc.
Frosst Portuguesa - Produtos Farmaceuticos, Lda.
Fulford (India) Limited 1
Global Safety Surveillance LLC
GlycoFi, Inc.
Hangzhou MSD Pharmaceutical Co., Ltd. 1
Harrisvaccines, Inc.
Hawk and Falcon L.L.C.
Healthcare Services and Solutions, LLC
Heptafarma - Companhia Farmacêutica, Sociedade Unipessoal, Lda.
HMR Weight Management Services Corp.
Hydrochemie GmbH
Idenix GmbH
Idenix Pharmaceuticals LLC
Idenix SARL
InfoMedics International, Inc.
InfoMedics, Inc.
International Indemnity Ltd.
Intervet
Intervet (Ireland) Limited
Intervet (Israel) Ltd.
Intervet (M) Sdn. Bhd.
Intervet (Proprietary) Limited
Intervet (Thailand) Ltd.
Intervet AB
Intervet Agencies B.V.
Intervet Animal Health Production B.V.
Intervet Animal Health Taiwan Limited
Intervet Argentina S.A.
Intervet Australia Pty Limited
Intervet Bulgaria EOOD
Intervet Canada Corp.
Intervet Central America S. de R.L.
Intervet Colombia Ltda
Intervet Danmark A/S

United Kingdom
Brazil
Argentina
Italy
Philippines
Ecuador
Ireland
Portugal
Portugal
France
Portugal
Delaware
Portugal
India
Delaware
Delaware
China
Iowa
Delaware
Delaware
Portugal
Delaware
Germany
Switzerland
Delaware
France
Delaware
Delaware
Bermuda
France
Ireland
Israel
Malaysia
South Africa
Thailand
Sweden
Netherlands
Netherlands
Taiwan (Republic of China)
Argentina
Australia
Bulgaria
Canada
Panama
Colombia
Denmark

Intervet Deutschland GmbH
Intervet Ecuador S.A.
Intervet Egypt for Animal Health SAE
Intervet GesmbH
Intervet Hellas A.E.
Intervet Holding B.V.
Intervet Holding Costa Rica SA
Intervet Holding Iberia, S.L.
Intervet Holdings France
Intervet Hungaria kft.
Intervet Inc.
Intervet India Private Limited
Intervet International
Intervet International B.V.
Intervet International GmbH
Intervet K.K.  
Intervet LLC
Intervet Maroc S.A.
Intervet Mexico S.A. de C.V.
Intervet Middle East Limited
Intervet Nederland B.V.
Intervet Oy
Intervet Philippines, Inc.
Intervet Productions S.A.
Intervet Productions Srl
Intervet Romania SRL
Intervet S.A.
Intervet Schering-Plough Animal Health Pty Ltd
Intervet South Africa (Proprietary) Limited
Intervet Sp. z.o.o.
Intervet UK Limited
Intervet UK Production Limited
Intervet Venezolana SA
Intervet Veterinaria Chile Ltda
Intervet Veteriner Ilaclari Pazarlama ve Ticaret Ltd. Sirketi
Intervet Vietnam Ltd.
Intervet, s.r.o.
Interveterinaria SA de CV
IOmet Pharma Ltd.
Kirby-Warrick Pharmaceuticals Limited
Laboratoires Merck Sharp & Dohme-Chibret
Laboratorios Abello, S.A.
Laboratorios Biopat, S.A.
Laboratorios Chibret, S.A.
Laboratorios Frosst, S.A.
Laboratorios Quimico-Farmaceuticos Chibret, Lda.

Germany
Ecuador
Egypt
Austria
Greece
Netherlands
Costa Rica
Spain
France
Hungary
Delaware
India
France
Netherlands
Germany
Japan
Russian Federation
Morocco
Mexico
Cyprus
Netherlands
Finland
Philippines
France
Italy
Romania
Peru
Australia
South Africa
Poland
United Kingdom
United Kingdom
Venezuela
Chile
Turkey
Viet Nam
Czech Republic
Mexico
United Kingdom
United Kingdom
France
Spain
Spain
Spain
Spain
Portugal

Livestock Nutrition Technologies Pty. Ltd.
Maple Leaf Holdings GmbH
Marketing Communications of North Carolina, LLC 1
Maya Tibbi Urunler Ticaret Limited Sirketi
MCM Vaccine B.V. 1
MCM Vaccine Co.  1
Med Help International, Inc.
Med-Nim (Proprietary) Limited
Merck and Company, Incorporated
Merck Canada Inc.
Merck Capital Ventures, LLC 1
Merck Frosst Canada & Co.
Merck Frosst Company
Merck Frosst Finco LP
Merck Global Health Innovation Fund, LLC
Merck Global Health Innovation, Private Equity, LLC
Merck Global Research LLC
Merck HDAC Research, LLC
Merck Holdings II Corp.
Merck Holdings III Corp.
Merck Holdings LLC
Merck Lumira Biosciences Fund L.P. 1
Merck Registry Holdings, Inc.
Merck Respiratory Health Company
Merck SH Inc.
Merck Sharp & Dohme (Argentina) Inc.
Merck Sharp & Dohme (Asia) Limited
Merck Sharp & Dohme (Australia) Pty. Limited
Merck Sharp & Dohme (Chile) Ltda.
Merck Sharp & Dohme (China) Limited
Merck Sharp & Dohme (Enterprises) B.V.
Merck Sharp & Dohme (Europe) Inc.
Merck Sharp & Dohme (Holdings) Limited
Merck Sharp & Dohme (Holdings) Pty Ltd
Merck Sharp & Dohme (I.A.) LLC
Merck Sharp & Dohme (International) Limited
Merck Sharp & Dohme (Israel - 1996) Company Ltd.
Merck Sharp & Dohme (Malaysia) SDN. BHD.
Merck Sharp & Dohme (New Zealand) Limited
Merck Sharp & Dohme (Sweden) A.B.
Merck Sharp & Dohme (Switzerland) GmbH
Merck Sharp & Dohme Animal Health, S.L.
Merck Sharp & Dohme Asia Pacific Services Pte. Ltd.
Merck Sharp & Dohme B.V.
Merck Sharp & Dohme BH d.o.o.
Merck Sharp & Dohme Bulgaria EOOD

Australia
Switzerland
Delaware
Turkey
Netherlands
Pennsylvania
Delaware
South Africa
Delaware
Canada
Delaware
Canada
Canada
Canada
Delaware
Delaware
Delaware
Delaware
Delaware
Delaware
Delaware
Canada
New Jersey
Nevada
Delaware
Delaware
Hong Kong
Australia
Chile
Hong Kong
Netherlands
Delaware
United Kingdom
Australia
Delaware
Bermuda
Israel
Malaysia
New Zealand
Sweden
Switzerland
Spain
Singapore
Netherlands
Bosnia
Bulgaria

Merck Sharp & Dohme Colombia S.A.S.
Merck Sharp & Dohme Comercializadora, S. de R.L. de C.V.
Merck Sharp & Dohme Corp.
Merck Sharp & Dohme Cyprus Limited
Merck Sharp & Dohme d.o.o.
Merck Sharp & Dohme d.o.o. Belgrade
Merck Sharp & Dohme de Espana SAU
Merck Sharp & Dohme Farmaceutica Ltda.
Merck Sharp & Dohme Finance Europe Limited
Merck Sharp & Dohme Gesellschaft m.b.H.
Merck Sharp & Dohme IDEA AG
Merck Sharp & Dohme inovativna zdravila d.o.o.
Merck Sharp & Dohme International Services B.V.
Merck Sharp & Dohme Ireland (Human Health) Ltd
Merck Sharp & Dohme Limited
Merck Sharp & Dohme Manufacturing Unlimited Company
Merck Sharp & Dohme OU
Merck Sharp & Dohme Peru SRL
Merck Sharp & Dohme Pharmaceutical Industrial and Commercial Societe Anonyme
Merck Sharp & Dohme Quimica de Puerto Rico, Inc.
Merck Sharp & Dohme Research GmbH
Merck Sharp & Dohme Romania SRL
Merck Sharp & Dohme S.A.
Merck Sharp & Dohme s.r.o.
Merck Sharp & Dohme Saude Animal Ltda.
Merck Sharp & Dohme SIA
Merck Sharp & Dohme Singapore Trading Pte. Ltd.
Merck Sharp & Dohme Tunisie SARL
Merck Sharp & Dohme, Limitada
Merck Sharp & Dohme, S. de R.L. de C.V.
Merck Sharp & Dohme, s.r.o.
Merck Sharp Dohme Ilaclari Limited Sirketi
ML Holdings (Canada) Inc.
MMUSA Acquisition II Corp. 1
MRL Cambridge ESC, LLC
MRL San Francisco, LLC
MRL Ventures Fund LLC
MSD (I.A.) B.V.
MSD (L-SP) Unterstützungskasse GmbH
MSD (Nippon Holdings) B.V.
MSD (Norge) AS
MSD (Proprietary) Limited
MSD (Shanghai) Pharmaceuticals Consultancy Co., Ltd.
MSD (Thailand) Ltd.
MSD Access Sdn. Bhd.

Colombia
Mexico
New Jersey
Cyprus
Croatia
Serbia
Spain
Brazil
United Kingdom
Austria
Switzerland
Slovenia
Netherlands
Ireland
United Kingdom
Ireland
Estonia
Peru
Greece
Delaware
Switzerland
Romania
Morocco
Czech Republic
Brazil
Latvia
Singapore
Tunisia
Portugal
Mexico
Slovakia
Turkey
Canada
Delaware
Delaware
Delaware
Delaware
Netherlands
Germany
Netherlands
Norway
South Africa
China
Thailand
Malaysia

MSD Animal Health (Shanghai) Trading Co., Ltd.
MSD Animal Health BVBA
MSD Animal Health FZ-LLC
MSD Animal Health GmbH
MSD Animal Health Innovation
MSD Animal Health Innovation AS
MSD Animal Health Innovation GmbH
MSD Animal Health Innovation Pte. Ltd.
MSD Animal Health Korea Ltd.
MSD Animal Health Limited
MSD Animal Health Norge AS
MSD Animal Health Pension Trustee Limited
MSD Animal Health S.r.l.
MSD Animal Health, Lda.
MSD Argentina Holdings B.V.
MSD Argentina SRL
MSD Asia Holdings Pte. Ltd.
MSD Belgium BVBA/SPRL
MSD Biopharma B.V.
MSD BM 1 Ltd.
MSD BM 2 Ltd.
MSD Brazil Investments B.V.
MSD Central America Services S. de R.L.
MSD China (Investments) B.V.
MSD China B.V.
MSD China Holding Co., Ltd.
MSD Consumer Care Limited
MSD Cubist Holdings Unlimited Company
MSD Danmark ApS
MSD Egypt LLC
MSD EIC Unlimited Company
MSD Eurofinance
MSD Farmaceutica C.A.
MSD FI BV
MSD Finance 2 LLC
MSD Finance B.V.
MSD Finance Company
MSD Finance Holding NL B.V.
MSD Finance Holdings Unlimited Company
MSD Finland Oy
MSD France
MSD Global Research GmbH
MSD Holdings (Ireland) Unlimited Company
MSD Holdings 2 G.K.
MSD Holdings G.K.
MSD Hong Kong Holdings Coöperatief U.A.

China
Belgium
United Arab Emirates
Switzerland
France
Norway
Germany
Singapore
Korea, Republic of
United Kingdom
Norway
United Kingdom
Italy
Portugal
Netherlands
Argentina
Singapore
Belgium
Netherlands
Bermuda
Bermuda
Netherlands
Panama
Netherlands
Netherlands
China
United Kingdom
Ireland
Denmark
Egypt
Ireland
Bermuda
Venezuela
Netherlands
Delaware
Netherlands
Bermuda
Netherlands
Ireland
Finland
France
Switzerland
Ireland
Japan
Japan
Netherlands

MSD Human Health Holding B.V.
MSD IDEA Pharmaceuticals Nigeria Limited
MSD IDEA Tunisie SARL
MSD Idenix Holdings Unlimited Company
MSD International Finance B.V.
MSD International Finance LLC
MSD International GmbH
MSD International Holdings 2 B.V.
MSD International Holdings GmbH
MSD International Holdings, Inc.
MSD International Investment Holdings Unlimited Company
MSD International Manufacturing GmbH
MSD Investment Holdings (Ireland) Unlimited Company
MSD Investments (Holdings) GmbH
MSD IT Global Innovation Center s.r.o.
MSD Italia s.r.l.
MSD K.K.
MSD Korea Ltd.
MSD Laboratories India LLC
MSD Latin America Services S. de R.L.
MSD Latin America Services S. de R.L. de C.V.
MSD Limited
MSD Luxembourg S.a.r.l.
MSD Merck Sharp & Dohme AG
MSD Mexico Investments B.V.
MSD NL 2 B.V.
MSD NL 4 B.V.
MSD Overseas Manufacturing Co (Ireland) Unlimited Company
MSD Panama International Services S. de R.L.
MSD Participations B.V.
MSD Pharma (Singapore) Pte. Ltd.
MSD Pharma GmbH
MSD Pharma Hungary Korlatolt Felelossegu Tarsasag
MSD Pharmaceuticals
MSD Pharmaceuticals Holdings Unlimited Company
MSD Pharmaceuticals Investments 1 Unlimited Company
MSD Pharmaceuticals Investments 3 Unlimited Company
MSD Pharmaceuticals Ireland Unlimited Company
MSD Pharmaceuticals Private Limited
MSD Polska Dystrybucja Sp. z.o.o.
MSD Polska Sp.z.o.o.
MSD R&D (China) Co., Ltd.
MSD R&D Innovation Centre Limited
MSD Regional Business Support Center GmbH
MSD Registry Holdings, Inc.
MSD Shared Business Services EMEA Limited

Netherlands
Nigeria
Tunisia
Ireland
Netherlands
Delaware
Switzerland
Netherlands
Switzerland
Delaware
Ireland
Switzerland
Ireland
Switzerland
Czech Republic
Italy
Japan
Korea
Delaware
Panama
Mexico
United Kingdom
Luxembourg
Switzerland
Netherlands
Netherlands
Netherlands
Ireland
Panama
Netherlands
Singapore
Germany
Hungary
Russian Federation
Ireland
Ireland
Ireland
Ireland
India
Poland
Poland
China
United Kingdom
Germany
New Jersey
Ireland

MSD Sharp & Dohme Gesellschaft mit beschränkter Haftung
MSD Switzerland Investments 1 Unlimited Company
MSD Switzerland Investments 4 Unlimited Company
MSD Switzerland Investments 5 Limited
MSD Ukraine Limited Liability Company
MSD Unterstutzungskasse GmbH
MSD Vaccins
MSD Vaccins Holdings
MSD Venezuela Holding GmbH
MSD Ventures (Ireland) Unlimited Company
MSD Verwaltungs GmbH
MSD Vietnam Company Limited
MSD Vietnam Holdings B.V.
MSD Vostok B.V.
MSDRG LLC
MSD-SP Ltd.
MSD-Sun FZ-LLC
MSD-SUN, LLC 1
MSP Singapore Company, LLC
Multilan AG
Mycofarm UK Limited
N.V. Organon
Nanjing Organon Pharmaceutical Co., Ltd.
Nihon MSD G.K.
Nourifarma - Produtos Quimicos e Farmaceuticos Lda
NovaCardia, Inc.
OBS Holdings B.V.
Oncoethix GmbH
Optimer Pharmaceuticals LLC
Organon (India) Private Limited
Organon (Ireland) Ltd
Organon (Philippines) Inc.
Organon Agencies B.V.
Organon BioSciences International B.V.
Organon BioSciences Ventures B.V.
Organon China B.V.
Organon Dominicana SA
Organon Egypt Ltd
Organon Laboratories Limited
Organon Latin America S.A.
Organon Middle East S.A.L.
Organon Participations B.V.
Organon Teknika Corporation LLC
Organon USA Inc.
P.T. Merck Sharp & Dohme Indonesia
PI International PVT LTD.

Germany
Ireland
Ireland
Switzerland
Ukraine
Germany
France
France
Switzerland
Ireland
Germany
Vietnam
Netherlands
Netherlands
Delaware
United Kingdom
United Arab Emirates
Delaware
Delaware
Switzerland
United Kingdom
Netherlands
China
Japan
Portugal
Delaware
Netherlands
Switzerland
Delaware
India
Ireland
Philippines
Netherlands
Netherlands
Netherlands
Netherlands
Dominican Republic
Egypt
United Kingdom
Uruguay
Lebanon
Netherlands
Delaware
New Jersey
Indonesia
United Kingdom

Pitman-Moore Saude Animal Comercio e Distribuicao de Produtos Veterinarios
Plough (U.K.) Limited
Protein Transaction, LLC
PT Intervet Indonesia
PT Merck Sharp Dohme Pharma Tbk  1
PT Organon Indonesia
Rosetta Biosoftware UK Limited
Rosetta Inpharmatics LLC
Sanofi Pasteur MSD AB
Sanofi Pasteur MSD AG
Sanofi Pasteur MSD Gestion S.A. 1
Sanofi Pasteur MSD GmbH
Sanofi Pasteur MSD GmbH
Sanofi Pasteur MSD Limited
Sanofi Pasteur MSD Ltd.
Sanofi Pasteur MSD N.V./S.A. 1
Sanofi Pasteur MSD S.A.
Sanofi Pasteur MSD S.A.
Sanofi Pasteur MSD S.p.A.
Schering-Plough
Schering-Plough (India) Private Limited
Schering-Plough (Ireland) Unlimited Company
Schering-Plough Animal Health Limited
Schering-Plough Animal Health, Inc.
Schering-Plough Bermuda Ltd.
Schering-Plough Canada Inc.
Schering-Plough Central East AG
Schering-Plough Clinical Trials, S.E.
Schering-Plough Corporation
Schering-Plough Corporation, U.S.A.
Schering-Plough del Ecuador, S.A.
Schering-Plough del Peru S.A.
Schering-Plough Holdings Limited
Schering-Plough Indústria Farmacêutica Ltda.
Schering-Plough Int Limited
Schering-Plough Investments Ltd.
Schering-Plough Labo NV
Schering-Plough Limited
Schering-Plough Limited
Schering-Plough Maroc S.a.R.L.
Schering-Plough S.A.
Schering-Plough S.A.
Schering-Plough S.A.
Schering-Plough S.A.
Schering-Plough S.A. de C.V.
Schering-Plough Sante Animale

Brazil
United Kingdom
Delaware
Indonesia
Indonesia
Indonesia
United Kingdom
Delaware
Sweden
Switzerland
France
Austria
Germany
United Kingdom
Ireland
Belgium
Portugal
Spain
Italy
France
India
Ireland
New Zealand
Philippines
Bermuda
Canada
Switzerland
United Kingdom
Philippines
Delaware
Ecuador
Peru
United Kingdom
Brazil
United Kingdom
Delaware
Belgium
Taiwan (Republic of China)
United Kingdom
Morocco
Panama
Paraguay
Spain
Uruguay
Mexico
France

Sentipharm AG
Servicios Veterniarios Servet, Sociedad Anónima
Sewaren Corp.
Shanghai MSD Pharmaceutical Trading Co., Ltd.
ShareWIK, LLC 1
Sinova AG 1
Skyscape.Com India Private Limited
SmartCells, Inc.
SOL Limited
S-P Ril Ltd.
S-P Veterinary (UK) Limited
S-P Veterinary Holdings Limited
S-P Veterinary Limited
S-P Veterinary Pensions Limited
StayWell Health Management, LLC 1
StayWell Interactive, LLC 1
Supera Rx Medicamentos Ltda. 1
Tasman Vaccine Laboratory (UK) Ltd
TELERx Marketing Inc.
The StayWell Company, LLC 1
Theriak B.V.
Thomas Morson & Son Limited
Tomorrow Networks, LLC
Trius Therapeutics LLC
UAB Merck Sharp & Dohme
Undra, S.A. de C.V.
Venco Farmaceutica S.A.
Venco Holding GmbH
Vet Pharma Friesoythe GmbH
VetInvent, LLC
Vetrex B.V.
Vetrex Egypt L.L.C.
Vetrex Limited
Vree Health Italia S.r.l.
Vree Health LLC
Vree Health Ltd.
Werthenstein Biopharma GmbH
Zoöpharm B.V.

___________

1 own less than 100%

Switzerland
Costa Rica
Delaware
China
Delaware
Switzerland
India
Delaware
Bermuda
United Kingdom
United Kingdom
United Kingdom
United Kingdom
United Kingdom
Delaware
Delaware
Brazil
United Kingdom
Pennsylvania
Delawarae
Netherlands
United Kingdom
Delaware
Delaware
Lithuania
Mexico
Venezuela
Switzerland
Germany
Delaware
Netherlands
Egypt
United Kingdom
Italy
Delaware
United Kingdom
Switzerland
Netherlands

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (Nos. 333-208308, 333-208306 and 333-164482) and on Form S-8
(Nos.  333-173025,  333-173024,  333‑162882,  333-162883,  333-162884,  333-162885,  333-162886,  333-134281  and  333-121089)  of  Merck  &  Co.,  Inc.  of  our
report dated February 28, 2017 relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 10-
K.

Exhibit 23

/s/ PricewaterhouseCoopers LLP
PricewaterhouseCoopers LLP
Florham Park, New Jersey
February 28, 2017

POWER OF ATTORNEY

Each of the undersigned does hereby appoint MICHAEL J. HOLSTON as his/her true and lawful attorney to execute on behalf of the undersigned (whether
on behalf of the Company, or as an officer or director thereof, or by attesting the seal of the Company, or otherwise) the Annual Report on Form 10-K of Merck &
Co.,  Inc.  for  the  fiscal  year  ended  December  31,  2016  under  the  Securities  Exchange  Act  of  1934,  including  amendments  thereto  and  all  exhibits  and  other
documents in connection therewith.

IN WITNESS WHEREOF, this instrument has been duly executed as of the 28 th day of February 2017.

Exhibit 24.1

MERCK & CO., Inc.

/s/ Kenneth C. Frazier

Kenneth C. Frazier

/s/ Robert M. Davis

Robert M. Davis

/s/ Rita A. Karachun

Rita A. Karachun

/s/ Leslie A. Brun

Leslie A. Brun

/s/ Thomas R. Cech

Thomas R. Cech

/s/ Pamela J. Craig

Pamela J. Craig

/s/ Thomas H. Glocer

Thomas H. Glocer

/s/ C. Robert Kidder

C. Robert Kidder

/s/ Rochelle B. Lazarus

Rochelle B. Lazarus

Chairman, President and Chief Executive Officer

(Principal Executive Officer; Director)

Executive Vice President, Global Services

and Chief Financial Officer

(Principal Financial Officer)

Senior Vice President Finance—Global Controller

(Principal Accounting Officer)

DIRECTORS

/s/ Carlos E. Represas

Carlos E. Represas

/s/ Paul B. Rothman

Paul B. Rothman

/s/ Patricia F. Russo

Patricia F. Russo

/s/ Craig B. Thompson

Craig B. Thompson

/s/ Wendell P. Weeks

Wendell P. Weeks

/s/ Peter C. Wendell

Peter C. Wendell

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 24.2

I, Katie E. Fedosz, Senior Assistant Secretary of Merck & Co., Inc. (the “Company”), a corporation duly organized and existing under the laws of the State
of New Jersey, do hereby certify that the following is a true copy of a resolution adopted at a meeting of the Board of Directors of said Company on February 28,
2017 in accordance with the provisions of the By-Laws of said Company:

“Special Resolution No. – 2017

RESOLVED, that the proposed form of the Annual Report on Form 10-K of the Company for the fiscal year ended December 31, 2016

attached hereto is hereby approved with such changes as the proper officers of the Company, with the advice of counsel, deem appropriate; and

FURTHER RESOLVED, that each officer and director who may be required to execute the aforesaid Annual Report on Form 10-K or any
amendments thereto (whether on behalf of the Company or as an officer or director thereof, or by attesting the seal of the Company, or otherwise) is
hereby authorized to execute a power of attorney appointing Michael J. Holston as his/her true and lawful attorney to execute in his/her name, place and
stead  (in  any  such  capacity)  such  Annual  Report  on  Form  10‑K  and  any  and  all  amendments  thereto  and  any  and  all  exhibits  and  other  documents
necessary or incidental in connection therewith and to file the same with the Securities and Exchange Commission, the attorney to have power to act,
and to have full power and authority to do and perform in the name and on behalf of each of said officers and directors, or both, as the case may be,
every act whatsoever necessary or advisable to be done in the premises as fully and to all intents and purposes as any such officer or director might or
could do in person.”

IN WITNESS WHEREOF, I have hereunto subscribed my signature and affixed the seal of the Company this 28 th day of February 2017.

[Corporate Seal]

/s/ Katie E. Fedosz

Katie E. Fedosz
Senior Assistant Secretary

 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 31.1

I, Kenneth C. Frazier, certify that:

1.    I have reviewed this annual report on Form 10-K of Merck & Co., Inc.;

CERTIFICATION

2.        Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the

statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.        Based  on  my  knowledge,  the  financial  statements,  and  other  financial  information  included  in  this  report,  fairly  present  in  all  material  respects  the

financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.        The  registrant’s  other  certifying  officer(s)  and  I  are  responsible  for  establishing  and  maintaining  disclosure  controls  and  procedures  (as  defined  in
Exchange  Act Rules 13a-15(e)  and 15d-15(e))  and internal  control  over financial  reporting  (as defined  in Exchange  Act Rules 13a-15(f)  and 15d-15(f))  for the
registrant and have:

a)    Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during
the period in which this report is being prepared;

b)    Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision,
to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with
generally accepted accounting principles;

c)    Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)    Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s
internal control over financial reporting; and

5.    The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)    All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely

to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)    Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over

financial reporting.

Date: February 28, 2017

By:      /s/ Kenneth C. Frazier

KENNETH C. FRAZIER
Chairman, President and Chief Executive Officer

 
Exhibit 31.2

I, Robert M. Davis, certify that:

1.    I have reviewed this annual report on Form 10-K of Merck & Co., Inc.;

CERTIFICATION

2.        Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the

statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.        Based  on  my  knowledge,  the  financial  statements,  and  other  financial  information  included  in  this  report,  fairly  present  in  all  material  respects  the

financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.        The  registrant’s  other  certifying  officer(s)  and  I  are  responsible  for  establishing  and  maintaining  disclosure  controls  and  procedures  (as  defined  in
Exchange  Act Rules 13a-15(e)  and 15d-15(e))  and internal  control  over financial  reporting  (as defined  in Exchange  Act Rules 13a-15(f)  and 15d-15(f))  for the
registrant and have:

a)    Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during
the period in which this report is being prepared;

b)    Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision,
to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with
generally accepted accounting principles;

c)    Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)    Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal
quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s
internal control over financial reporting; and

5.    The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a)    All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely

to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)    Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over

financial reporting.

Date:   February 28, 2017

By:       /s/ Robert M. Davis

ROBERT M. DAVIS
Executive Vice President, Global Services
and Chief Financial Officer

 
Section 1350
Certification of Chief Executive Officer

Exhibit 32.1

Pursuant to 18 U.S.C. Section 1350, the undersigned officer of Merck & Co., Inc. (the “Company”), hereby certifies that the Company’s Annual Report on
Form 10-K for the year ended December 31, 2016 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of
1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:  February 28, 2017

/s/ Kenneth C. Frazier

Name: KENNETH C. FRAZIER

Title: Chairman, President and Chief Executive Officer

 
 
 
 
 
Section 1350
Certification of Chief Financial Officer

Exhibit 32.2

Pursuant to 18 U.S.C. Section 1350, the undersigned officer of Merck & Co., Inc. (the “Company”), hereby certifies that the Company’s Annual Report on
Form 10-K for the fiscal year ended December 31, 2016 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange
Act  of  1934  and  that  the  information  contained  in  the  Report  fairly  presents,  in  all  material  respects,  the  financial  condition  and  results  of  operations  of  the
Company.

Dated: February 28, 2017

/s/ Robert M. Davis

Name: ROBERT M. DAVIS

Title: Executive Vice President, Global Services
              and Chief Financial Officer