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Biogen

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FY2017 Annual Report · Biogen
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2017 ANNUAL REPORT

PIONEERING THE FUTURE
OF NEUROSCIENCE

YEARS

1  |  2017 Biogen Annual Report
1  |  2017 Biogen Annual Report

About the Cover
Left: Ankur is Senior Associate Scientist, Neurology Research at Biogen 
Right: Erin is Associate Director, Pharmaceutical Development, Pharmaceutical Operations & Technology (PO&T) and Albert is Principal Scientist, Pharmaceutical 
Development, PO&T at Biogen 

About the Graphic Artwork 
The artwork highlighted in the report was submitted by Biogen’s R&D team as part of our annual RAD (Research and Development) Art contest. Each image reflects 
work underway in the lab every day.

2017 Biogen Annual Report  |  2

FINANCIAL PERFORMANCE 
FINANCIAL PERFORMANCE 

REVENUES
REVENUES
$ in millions
$ in millions

GAAP 
GAAP 
DILUTED 
DILUTED 
EPS
EPS

NON-GAAP 
NON-GAAP 
DILUTED 
DILUTED 
EPS*
EPS*

FREE CASH
FREE CASH
FLOW*
FLOW*
$ in millions
$ in millions

2013

2014

2015

2016

2017

2013

2014

2015

2016

2017

2013

2014

2015

2016

2017

2013

2014

2015

2016

2017

$6,932

$9,703

$10,764

$11,499

$12,274

$7.81

$12.37

$11.921

$15.34

$16.93

$8.96

$13.83

$17.01

$20.22

$21.81

$2,084

$2,279

$2,223

$2,706

$2,4842

1 “GAAP diluted EPS” for 2017 reflects the impact of The Tax Cuts and Jobs Act of 2017 and higher costs associated  
  with our external business development activities, including our agreements with Bristol-Myers Squibb Company, Ionis  
  Pharmaceuticals Inc., Neurimmune Subone AG and Alkermes Pharma Ireland Limited, a subsidiary of Alkermes plc. 
2 “Free Cash Flow*” for 2017 reflects an increase in capital expenditures related to the construction of our large-scale  
  biologics manufacturing facility in Solothurn, Switzerland. 
* “Non-GAAP diluted EPS” and “Free Cash Flow” are Non-GAAP financial measures. A reconciliation of GAAP to 
   Non-GAAP diluted EPS and Free Cash Flow amounts is set forth on pages 18-20 of this Annual  Report.

3  |  2017 Biogen Annual Report

 MICHEL VOUNATSOS
CHIEF EXECUTIVE OFFICER

2017 Biogen Annual Report  |  4

~ 1b 

PEOPLE 
SUFFER FROM 
NEUROLOGICAL 
DISORDERS 
WORLDWIDE

12 

LIFE-CHANGING 
MEDICINES

DEAR FELLOW SHAREHOLDERS:
I am honored and humbled to write to you as the CEO of Biogen as 
we celebrate our 40th anniversary in 2018. One of the world’s first 
global biotechnology companies, we were founded in 1978 by Charles 
Weissmann, Heinz Schaller, Kenneth Murray and Nobel Prize winners 
Walter Gilbert and Phillip Sharp.

OUR FOUNDERS’ guiding principles and leadership in innovative scientific research 
have sustained at Biogen to this day. Over the past decade, we have been devoted to defeating 
devastating neurological diseases. Biogen has established a 20-year foundation in multiple sclerosis 
(MS) treatment and, most recently, pioneered a treatment for spinal muscular atrophy (SMA). 

2018 is a remarkable time to lead a company at the forefront of neuroscience. We believe no other 
disease area holds as much need or as much promise for medical breakthroughs as neuroscience. 
Neurological disorders affect approximately one billion people, are the leading cause of disability 
and are the number two cause of death worldwide, second only to cardiovascular disease. 

We believe that Biogen is uniquely positioned as a global leader in neuroscience to take on this 
enormous challenge. In 2017 we declared our goal to become the global leader in neuroscience by 
developing transformational therapies to address what we believe are becoming the world’s most 
significant unmet medical needs.

Our strategy is simple: Leverage a strong core business to help drive future growth. Our first three 
strategic priorities focus on fortifying our core business – this is Biogen today:

• 

• 

• 

Maximizing the resilience of our core multiple sclerosis (MS) business to drive  
earnings and cash flow

Accelerating our progress in spinal muscular atrophy (SMA) as we shift towards  
new growth opportunities

Creating a leaner and simpler operating model

For the Biogen of tomorrow, we will build upon our core business and a leaner and simpler 
operating model to create new sources of value through:

• 

• 

Developing and expanding our neuroscience portfolio to create the future growth  
engines of Biogen

Re-prioritizing our capital allocation efforts to continue to maximize shareholder  
value, with an increased focus on investment for future growth

We are pleased with the work we have done to execute on our strategy, which we believe has led to 
significant progress for Biogen. We know our work is not finished and we remain committed to our 
longer-term goal of becoming the leader in neuroscience and the fastest-growing large cap 
biotech company. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
5  |  2017 Biogen Annual Report

EXECUTING ON THE CORE BUSINESS

CREATING NEW SOURCES OF VALUE

Maximizing the resilience of our  
MS core business

Accelerating our progress in  
spinal muscular atrophy  

Creating a leaner and simpler   
operating model

Developing and expanding our
neuroscience portfolio

Re-prioritizing our capital 
allocation efforts

EXECUTING ON OUR STRATEGY 
We believe we delivered on our strategy in 2017. Our MS business remained core to Biogen’s 
success with global revenues, including royalty revenues on sales of OCREVUS®, increasing 4 
percent over 2016. In addition, the launch of SPINRAZA proved to be one of the most remarkable 
biotech product launches of the year, with approximately 3,200 patients on the therapy3. Our efforts 
combined to deliver strong financial performance, generating an all-time high of $12.3 billion in 
total revenues. Total revenues for 2017 grew by 7 percent over 2016, or a 15 percent increase over 
2016 excluding hemophilia revenues4.

3 As of December 31, 2017, approximately 3,200 patients were receiving SPINRAZA across the post-marketing setting, the expanded access program and  
  ongoing clinical trials.
4 In Q1 2017 Biogen completed the spin-off of its global hemophilia business into a new company, known as Bioverativ Inc. The 15 percent increase in total  
  revenues excludes all hemophilia revenues from 2016 through January 2017. Hemophilia revenues include ELOCTATE® and ALPROLIX® product revenues  
  as well as royalty and contract manufacturing revenues received from Sobi.

 
 
 
2017 Biogen Annual Report  |  6

~20%

OF ANNUAL 
REVENUES 
INVESTED INTO 
R&D OVER PAST 
DECADE

$12.3b

IN REVENUES 
IN 2017

For the Biogen of tomorrow, we plan to build upon our core business to create new sources of value. 
In 2017 we made noteworthy advancements, transitioning five pipeline candidates from research to 
development, nearly doubling our historical productivity. Additionally, we added seven new clinical 
stage programs across our core and emerging growth areas through the advancement of our 
internal candidates and external business development. These programs included: 

CORE: 
•BIIB098 (monomethyl fumarate prodrug)* in MS
•BIIB092 (anti-tau mAb) in Alzheimer’s disease 
•BIIB092 (anti-tau mAb) in Progressive Supranuclear Palsy (PSP)
•BIIB076 (anti-tau mAb)* in Alzheimer’s disease
•BIIB080 (IONIS-MAPTRx)* in Alzheimer’s disease

EMERGING:
•BIIB093 (glibenclamide IV) in Large Hemispheric Infarction (LHI) Stroke
•Natalizumab in Epilepsy

*Collaboration programs.

CORE GROWTH AREAS

EMERGING GROWTH AREAS

MS/NEURO-
IMMUNOLOGY

ALZHEIMER’S
DISEASE/
DEMENTIA

MOVEMENT 
DISORDERS

NEURO-
MUSCULAR
DISORDERS

PAIN

OPHTHAL-
MOLOGY

NEURO-
PSYCHIATRY

ACUTE
NEUROLOGY

We also re-prioritized our capital allocation with an increased focus on long-term growth while 
continuing to buy back shares opportunistically, repurchasing approximately 4.9 million shares of 
our common stock in 2017 with a total value of $1.4 billion. 

In 2017 we further aligned our business to our strategy. We completed the spin-off of our 
hemophilia business as an independent company and we continued construction of our large-scale 
biologics manufacturing facility at Solothurn, Switzerland, which we expect will be operational by the 
end of the decade.

In 2017 we also made several key appointments to our management team, including Jeffery D. 
Capello as Executive Vice President and Chief Financial Officer, Ginger Gregory as Executive Vice 
President and Chief Human Resources Officer and Chirfi Guindo as Executive Vice President and 
Head of Global Marketing, Market Access and Customer Innovation. 

Our people and our leaders are at the core of our success. During my time at Biogen, I have been 
inspired by the commitment that all Biogen employees have to patients, to our communities, and to 
our shareholders. I am privileged to work with people who have the talent and skills needed to lead 
Biogen forward. 

 
 
 
 
 
 
 
 
 
 
 
 
7  |  2017 Biogen Annual Report

CORE COMMERCIAL PERFORMANCE
MULTIPLE SCLEROSIS (MS)
Today, Biogen remains a global leader in all three segments of the MS market: oral, high-efficacy 
and interferons. In 2017, even amid stiff competition, we were resilient with our global MS market 
share of approximately 37 percent, or approximately 340,000 patients.  

Our $9 billion MS franchise, including royalty revenues on sales of OCREVUS, has grown revenues 
at a compounded annual growth rate of 14 percent over the last 5 years. TECFIDERA revenues 
rose 6 percent to $4.2 billion in 2017 and TYSABRI remained in a stable market position with 
approximately $2 billion in annual revenues.

We were able to expand U.S. access for our MS portfolio and we are excited to see it implemented 
in 2018. We also executed five value-based contracts in the U.S., which we believe will give us the 
opportunity to learn and develop new contracting models to better serve patients in the future.  

~37%

MS PATIENTS 
TREATED WITH 
OUR MEDICINES
GLOBALLY

1st

& ONLY APPROVED
TREATMENT
FOR SMA

SPINAL MUSCULAR ATROPHY (SMA) 
In 2017 the launch of SPINRAZA exceeded expectations. We saw strong SPINRAZA patient growth 
both in the U.S. and outside the U.S. As of December 31, 2017, there were approximately 3,200 
patients on the therapy5. 

Worldwide SPINRAZA revenues reached $884 million as we expanded our launch of SPINRAZA 
globally in 2017 and received additional approvals, including in the European Union and Japan. 
SPINRAZA is the first and only approved treatment for SMA, bringing hope for the first time to 
families, infants, teens and young adults.

We were also honored, along with our partner Ionis Pharmaceuticals Inc. (Ionis), when SPINRAZA 
won the prestigious 2017 Prix Galien USA award for the Best New Biotechnology Product.

3

ANTI-TNF 
BIOSIMILARS
APPROVED 
IN THE EU6

BIOSIMILARS
Biogen is a leader in the emerging field of biosimilars through Samsung Bioepis, our joint venture 
with Samsung BioLogics Co. Ltd. Together we are working to expand patient choice and offer 
physicians more options to meet the needs of patients, while delivering savings to healthcare 
systems. Biogen markets two biosimilars in Europe for Samsung Bioepis, BENEPALI (etanercept) 
and FLIXABI (infliximab), serving more than 70,000 patients and generating $380 million in total 
product revenues in 2017, representing a 277 percent increase over 2016. In addition, a third 
biosimilar which we will market, IRMALDI (adalimumab), was approved in the European Union in 
2017 and is expected to launch in Europe in October 2018.

CREATING NEW SOURCES OF VALUE 
2017 was a transformative year for Biogen Research & Development. We provided clarity on 
Biogen’s strategic priorities and we believe this is where breaking science is opening new avenues 
for drug development. We believe that Biogen has a competitive advantage based on our strong 
track record and intense focus on our core and emerging growth areas within neuroscience. We also 
believe our successful SPINRAZA launch exemplifies our ability to bring new therapies to patients 
in need. Our goal is to leverage our competitive advantage, to target our investments to the areas of 
greatest need and opportunity and to advance a world-class neuroscience R&D engine.

5 As of December 31, 2017, approximately 3,200 patients were receiving SPINRAZA across the post-marketing setting, the expanded access program and  
  ongoing clinical trials.
6 Two currently available for treatment; a third has been granted marketing authorization by the European Commission and is expected to launch in 
  Europe in October 2018. 

 
 
 
2017 Biogen Annual Report  |  8

ONE OF 
THE LARGEST 
PRODUCERS
OF BIOLOGICS
IN BIOTECH

>$2b

SPENT ON R&D
IN 2017 ALONE

140

ACTIVE STUDIES7

As we develop and expand our portfolio, we aim to increase overall productivity at every stage, 
balance our portfolio and to continue to implement a robust external portfolio strategy, which may 
include acquisitions, development partnerships for resource flexibility and risk sharing and early 
innovation partnerships.

MULTIPLE SCLEROSIS
As part of our long-standing commitment to the MS community, we remain dedicated to advancing 
the treatment of MS and building on our leadership in this space. In 2017 we demonstrated this 
commitment by advancing opicinumab (anti-LINGO-1) into a Phase 2b trial for remyelination. We 
also licensed BIIB098, an oral monomethyl fumarate prodrug, from Alkermes Pharma Ireland 
Limited, a subsidiary of Alkermes plc. Furthermore, we strengthened our TECFIDERA intellectual 
property position through a licensing agreement with Forward Pharma A/S (Forward Pharma).

SPINAL MUSCULAR ATROPHY
As part of our commitment to the SMA community, we remain dedicated to advancing potential 
additional treatment options for SMA. In December 2017 we entered into a new collaboration 
agreement with Ionis to identify additional antisense oligonucleotide (ASO) drug candidates for 
the treatment of SMA. In this collaboration, we are exploring novel chemistries for advancing 
intrathecal ASO-based therapies that have the potential to reduce the dosing burden or increase the 
therapeutic effect of a therapy. 

We continue to believe that there is an opportunity in gene therapy and remain committed to 
advancing our gene therapy asset for SMA to clinical trials with the aim of dosing the first patient in 
the middle of 2018.    

ALZHEIMER’S DISEASE 
We believe we have the industry’s leading Alzheimer’s disease portfolio and are developing a variety 
of investigational therapies to treat patients with the disease. We have learned from extensive 
research, including from genetics, that Alzheimer’s disease can be driven by amyloid beta and 
that plaque build-up occurs before symptoms of Alzheimer’s disease. Our lead investigational 
compound, aducanumab, is being jointly developed with Eisai Co. LTD (Eisai) as of October 22, 
2017. It is the first to show with clinical data a slowing of the progression of disease as we saw in 
the Phase 1b PRIME trial. The aducanumab investigational compound differs in meaningful ways 
from other investigational compounds because it is highly selective for aggregated forms of amyloid 
beta and substantially removes them from the brain. The results from the Phase 1b PRIME trial 
support the design of our ongoing Phase 3 trials.

In late 2017 the Independent Data Monitoring Committee determined that BAN2401, an anti-
amyloid beta protofibril antibody that we are jointly developing with Eisai, did not meet the criteria 
for success based on a Bayesian analysis at 12 months as the primary endpoint in an 856-patient 
Phase II trial (Study 201). The results of the final analysis are expected in the second half of 2018. 

Beyond aducanumab and BAN2401, we are advancing four other clinical assets in Alzheimer’s 
disease, including E2609, a BACE inhibitor being jointly developed with Eisai, two anti-tau 
antibodies and an anti-tau ASO in collaboration with Ionis.

In 2017 we also renegotiated our agreements with Eisai and Neurimmune AG Subone 
(Neurimmune) with the aim to improve the potential long-term economics of aducanumab.

7 Active study includes all studies between pre-Study Management Team (SMT) formation and Clinical Study Report (CSR) as defined by internal systems as  
  of March 9, 2018.

 
 
 
9  |  2017 Biogen Annual Report

BIOGEN FOR THE FUTURE 
Forty years from now, we may look back at this time as a point of inflection for Biogen as we build 
on our legacy of science and discovery to pursue increasingly complex challenges in neuroscience. 
Leveraging substantial core competencies, including the world’s best neurologists and 
neuroscientists, across a broad set of opportunities, we believe that we are well positioned 
for the future. 

We believe we are already executing on our well-defined strategy to deliver near-term results and 
maximize long-term value. We have an energized, world-class executive team – and highly-skilled, 
passionate employees – with clear opportunities in front of us based on the significant unmet 
medical need and breakthroughs we see in neuroscience.

We also recognize that disease knows no borders or financial position. While we remain focused 
on our priority markets, we are selectively expanding Biogen around the world. We also continue to 
look for innovative ways to drive the evolution of the payer market, as evidenced by our value-based 
contracting models. With an evolving payer landscape and possible political and regulatory changes 
likely impacting our industry, we will focus on working to shape the future landscape in an effort to 
place the patient first.

At Biogen, our credo is Caring Deeply. Working Fearlessly. Changing Lives.™  We are committed to 
this philosophy, and we will continually work to improve patient access and health outcomes, build 
supportive communities and inspire future generations of scientists. I am proud of the dedication of 
our employees and the strength of our programs in such areas as diversity and inclusion, safety and 
environmental sustainability. Biogen continues to garner the respect and admiration of its peers 
and the communities in which it operates.

Through all of our work, we maintain the highest levels of ethics and transparency, which are critical 
to building and maintaining trust with patients, providers, our shareholders and other stakeholders.

As we celebrate our 40th anniversary in 2018, I would like to thank our employees around the world 
who are dedicated to making a positive impact on patients’ lives – and all the physicians, caregivers 
and participants in our clinical development programs. Finally, I would like to thank you, my fellow 
shareholders, for your past support and continued confidence in the future of Biogen.  

Michel Vounatsos 
Chief Executive Officer

 
2017 Biogen Annual Report  |  10
2017 Biogen Annual Report  |  10

11  |  2017 Biogen Annual Report

Over the past year, I’ve seen a construction site 
turn into a high-tech vision of the future. The 
next-generation biologics manufacturing facility will 
lead the industry in advanced process controls and 
novel techniques. Our motivated and expert staff 
is excited to bring this technological innovation to 
reality and deliver treatments to our patients. 

Lilla Csanaky
Manufacturing Associate, 
Solothurn, Switzerland

We are at a crucial moment in the field of 
neuroscience, and I believe Biogen is positioned 
for the future. Each day, we have an acute sense of 
urgency to develop new medicines that will positively 
impact the lives of millions of patients and caregivers 
around the world.

Teresa G. Cachero, Ph.D., PMP
Product Development and 
Commercialization Lead BIIB092

2017 was a transformative year for Biogen. We 
delivered one of the most exciting biotech launches 
of the year with SPINRAZA and had a record year for 
MS revenues. I want to thank our employees for their 
continued passion to bring innovative therapies to 
market and dedication to access for 
patients across the U.S.

Dell Faulkingham
Vice President, 
Head of Neurology 
Marketing and Field Operations

2017 Biogen Annual Report  |  12

Biogen’s talented engineers and scientists know 
that patients are counting on us. We continuously 
look to improve development, technology transfer 
and product lifecycle management to deliver novel 
therapies to our patients faster and drive Biogen 
forward.

Shishir Ghia
Associate Director, 
Manufacturing Sciences

I speak with patients, providers and pharmacies 
each day with one key goal in mind: supporting the 
patient. I serve as a connection point to disease 
education, financial assistance, treatment options 
and support services. Having the confidence 
to say to a patient, ‘I can help you with that’ 
is empowering. 

 Tennille Harper
Universal Patient 
Services Coordinator

Biogen is making an unprecedented investment into 
Alzheimer’s, a devastating neurological disease that 
touches too many. We are at the forefront of research 
and development in this therapeutic area, and we 
believe that our pipeline holds great promise 
for society.

Samantha Budd Haeberlein
Vice President, 
Clinical Development 
Alzheimer’s Disease

13  |  2017 Biogen Annual Report

Biogen has invested roughly 20 percent of our 
revenues into research and development over 
the past decade, which is why we’ve managed to 
produce breakthrough treatments in MS and SMA. 
With world-class science, we are changing lives and 
fearlessly taking on some of neuroscience’s 
biggest challenges. 

Anirvan Ghosh 
Senior Vice President, 
Research and Early Development 

At Biogen, diversity and inclusion live in everything 
we do. It is not just seen as a must-do, it is seen as a 
strength from our leadership to our employees. This 
encourages me to bring my best self to work each 
day, and amplifies our teams’ knowledge, strengths 
and abilities.

Sini Ngobese
Manager, People Relations 
and Leave Management

The development and approval of SPINRAZA 
exemplifies Biogen’s mission to improve the lives of 
patients. At the end of 2017, approximately 3,200 
patients were receiving the treatment8, and this 
is just the beginning. The pace of discovery and 
innovation in neuroscience is accelerating rapidly. 

Wildon Farwell, M.D., MPH
Senior Medical Director,
Clinical Development

8 As of December 31, 2017, approximately 3,200 patients were receiving SPINRAZA across the post-marketing setting, the expanded access program and  
  ongoing clinical trials.

2017 Biogen Annual Report  |  14
2017 Biogen Annual Report  |  14

 7,000+

EMPLOYEES 
WORLDWIDE

4

CONSECUTIVE YEARS 
‘BEST PLACE TO WORK’ 
FOR LGBT EQUALITY 
IN THE U.S.

43%

OF DIRECTOR-LEVEL
EMPLOYEE  POSITIONS & 
ABOVE HELD BY WOMEN

73%

REDUCTION 
IN OPERATIONAL 
CARBON INTENSITY 
SINCE 2006

CARBON-NEUTRAL
COMPANY 
SINCE 2014

100%

RENEWABLE 
POWER
COMMITMENT

 
 
 
 
 
15  |  2017 Biogen Annual Report
15  |  2017 Biogen Annual Report

PHASE 1

PHASE 2

PHASE 3

2017 Biogen Annual Report  |  16

CORE 
GROWTH 
AREA

EMERGING 
GROWTH 
AREA

PRODUCT PIPELINE

MULTIPLE SCLEROSIS AND 
NEUROIMMUNOLOGY

BIIB098 (monomethyl fumarate 
prodrug)* - MS

Opicinumab (anti-LINGO-1) - MS

ALZHEIMER’S DISEASE 
AND DEMENTIA

Aducanumab (Aβ mAb)* - Alzheimer’s 

Elenbecestat (E2609)* - Alzheimer’s

BAN2401 (Aβ mAb)* - Alzheimer’s 

BIIB092 (anti-tau mAb) - Alzheimer’s

BIIB076 (anti-tau mAb)* - Alzheimer’s

BIIB080 (IONIS-MAPTRx)* - Alzheimer’s

PARKINSON’S DISEASE 
AND MOVEMENT 
DISORDERS

BIIB092 (anti-tau mAb) - Progressive 
Supranuclear Palsy (PSP) 

BIIB054 (anti-alpha-synuclein mAb) -  
Parkinson’s

NEUROMUSCULAR 
DISEASE INCLUDING 
SMA AND ALS

BIIB067 (IONIS-SOD1Rx)* - 
Amyotrophic Lateral Sclerosis (ALS) 

PAIN

BIIB074 (Vixotrigine) - Trigeminal 
Neuralgia

BIIB074 (Nav1.7) - Painful 
Lumbosacral Radiculophath (PLSR)

OPHTHALMOLOGY

BIIB087 (gene therapy)* - X-Linked 
Retinoschisis (XLRS)

ACUTE NEUROLOGY

BIIB093 (glibenclamide IV) - Large 
Hemispheric Infarction (LHI) Stroke 

Natalizumab - Epilepsy 

OTHER

Dapirolizumab pegol (anti-CD40L)* - 
Systemic Lupus Erythematosus (SLE)

BG00011 (STX-100) - 
Idiopathic Pulmonary Fibrosis (IPF)

BIIB059 (anti-BDCA2) - SLE

*Collaboration programs.

 
 
 
 
17  |  2017 Biogen Annual Report

EXECUTIVE COMMITTEE

_______

(Left to Right Below)

Chirfi Guindo

Executive Vice President and Head of Global Marketing, 

Market Access and Customer Innovation

Jeffrey D. Capello

Executive Vice President and 

Chief Financial Officer

Susan H. Alexander

Executive Vice President, 

Chief Legal Officer and Secretary

Alfred W. Sandrock, Jr., M.D., Ph.D.

Executive Vice President 

and Chief Medical Officer

Michel Vounatsos

Chief Executive Officer

Paul F. McKenzie, Ph.D.

Executive Vice President,

Pharmaceutical Operations and Technology

Ginger Gregory, Ph.D.

Executive Vice President and 

Chief Human Resources Officer

Michael D. Ehlers, M.D., Ph.D.

Executive Vice President,

Research and Development

2017 Biogen Annual Report  |  18

FINANCIALS

_______

GAAP to Non-GAAP Reconciliation

DILUTED EPS AND NET INCOME ATTRIBUTABLE TO BIOGEN INC.

(Unaudited, $ in millions, except per share amounts)

FY   |

2013

2014

2015

2016

2017

GAAP Diluted EPS 

$7.81 

$12.37 

$15.34 

$16.93 

$11.92 

Adjustments to net income attributable to Biogen Inc. (see below) 

1.15 

1.46 

1.67

3.29 

9.89 

Non-GAAP Diluted EPS 

$8.96 

$13.83 

$17.01 

$20.22

$21.81 

GAAP Net Income Attributable to Biogen Inc. 

$1,862 

$2,935 

$3,547 

$3,703 

$2,539 

Amortization of acquired intangible assetsA,B  

TECFIDERA litigation settlement chargeA 

Acquired in-process research and development 

331  

473  

365  

- 

- 

- 

- 

- 

- 

Loss (gain) on fair value remeasurement of contingent consideration 

(1) 

(39) 

31

Net distribution to noncontrolling interestsC

Gain on deconsolidation of variable interest entities 

Hemophilia business separation costs 

Restructuring, business transformation and other cost-saving initiatives:

2017 corporate strategy implementationD

Restructuring chargesD

Cambridge manufacturing facility rationalization costsE

Weston exit costsF 

Donation to Biogen Foundation 

Stock option expense and other 

-

- 

- 

-

-

-

27 

- 

10 

-

- 

- 

-

-

-

- 

35

12 

-

- 

- 

-

93

-

-

- 

-

374

455

- 

15

-

(4)

18 

-

33

55

-

- 

- 

815  

- 

120

63

110

- 

19

18

1

-

-

- 

-

Income tax effect related to reconciling items 

(93) 

(135) 

(104) 

(225) 

(213) 

Tax reformG

-

-

-

-

1,174

Non-GAAP Net Income Attributable to Biogen Inc.

$2,136

$3,281

$3,932

$4,423

$4,645

 
 
 
 
19  |  2017 Biogen Annual Report

FINANCIALS

_______

(Continued from previous page) 

FREE CASH FLOW RECONCILIATION

(Unaudited, $ in millions)

FY   |

2013

2014

2015

2016

2017

Net Cash Flows Provided by Operating Activities  

$2,345 

$2,942 

$3,716 

$4,522

$4,551 

Purchases of property, plant and equipment (Capital Expenditures) 

Contingent consideration related to Fumapharm AG acquisition 

(246) 

(15)

(288)

(375)

(643)

(850)

(616)

(867) 

(1,200)

(1,200) 

Free Cash Flow 

$2,084 

$2,279 

$2,223 

$2,706 

$2,484 

A Amortization of acquired intangible assets for 2017 includes $444 million of impairment and amortization charges related to the 
intangible assets associated with our U.S. and rest of world licenses to Forward Pharma’s intellectual property, including Forward Pharma’s 
intellectual property related to TECFIDERA. In exchange for these licenses, we paid Forward Pharma $1.25 billion in cash. During the fourth 
quarter of 2016 we recognized a pre-tax charge of $455 million and in the first quarter of 2017 we recognized intangible assets of $795 
million related to this agreement. 

We have two intellectual property disputes with Forward Pharma, one in the U.S. and one in the European Union, concerning intellectual 
property related to TECFIDERA. In March 2017 the U.S. intellectual property dispute was decided in our favor. We evaluated the 
recoverability of the U.S. asset acquired from Forward Pharma and recorded an impairment charge in the first quarter of 2017 to adjust 
the carrying value of the acquired U.S. asset to fair value reflecting the impact of the developments in the U.S. legal dispute. In January 
2018 the European Patent Office announced its decision revoking Forward Pharma’s European Patent No. 2 801 355. Based upon our 
assessment of these rulings, we continue to amortize the remaining net book value of the U.S. and rest of world intangible assets in our 
consolidated statements of income utilizing an economic consumption model.

The TECFIDERA litigation settlement charge for 2016 represents the portion of the $1.25 billion cash payment made in the first quarter of 
2017 attributable to our sales of TECFIDERA during the period April 2014 through December 31, 2016.

B Amortization of acquired intangible assets for 2017 includes a $31 million pre-tax impairment charge related to our acquired and in-
licensed rights and patents intangible asset due to the Article 20 Procedure of ZINBRYTA.

C Net distribution to noncontrolling interests for 2017 reflects the after-tax $150 million upfront payment made to Neurimmune in exchange 
for a 15 percent reduction in royalty rates payable on potential commercial sales of aducanumab. This upfront payment is in relation to the 
amendment of terms of our collaboration agreement with Neurimmune.

D 2017 corporate strategy and restructuring charges for 2017 are related to our efforts to create a leaner and simpler operating model.

2017 Biogen Annual Report  |  20

FINANCIALS

_______

(Continued from previous page) 

Restructuring charges for 2016 include charges of $18 million incurred in connection with our 2016 restructuring resulting from our 
decision to spin-off our hemophilia business. Restructuring charges for 2016 also include severance charges of $7 million related to 
employee separation costs as a result of our decision to vacate and cease manufacturing in Cambridge, MA and vacate our warehouse 
in Somerville, MA. Restructuring charges for 2016 further include $8 million of costs incurred in connection with our 2015 corporate 
restructuring.

Restructuring charges for 2015 reflect $93 million of charges incurred in connection with our 2015 corporate restructuring.

E Cambridge manufacturing facility rationalization costs for 2016 reflect $46 million of additional depreciation expense included in cost of 
sales, excluding amortization of acquired intangible assets in our condensed consolidated statements of income. Cambridge manufacturing 
facility rationalization costs for 2016 also includes charges of $7 million for the write-down of excess inventory.

F This charge represents the remaining lease obligation for the vacated portion of our Weston, MA facility, net of sublease income upon 
relocation of our headquarters to Cambridge, MA.

G On December 22, 2017, the Tax Cuts and Jobs Act of 2017 (the 2017 Tax Act) was signed into law and has resulted in significant changes 
to the U.S. corporate income tax system. The 2017 Tax Act includes a federal statutory rate reduction from 35 percent to 21 percent, the 
elimination or reduction of certain domestic deductions and credits, the transition of U.S. international taxation from a worldwide tax 
system towards a territorial tax system, limitations on the deductibility of interest expense and executive compensation and base-erosion 
prevention measures on future non-U.S. earnings of U.S. entities, which has the effect of subjecting certain of our earnings of foreign 
subsidiaries to U.S. taxation. These changes became effective beginning in 2018.

The 2017 Tax Act also includes a one-time mandatory deemed repatriation tax on accumulated foreign subsidiaries’ previously untaxed 
foreign earnings (the Transition Toll Tax). Changes in tax rates and tax laws are accounted for in the period of enactment. Therefore, during 
the year ended December 31, 2017, we recorded a charge totaling $1,174 million related to our current estimate of the provisions of the 
2017 Tax Act, including a $990 million expense under the Transition Toll Tax. The Transition Toll Tax must be paid over an eight-year period, 
starting in 2018, and will not accrue interest. 

NOTES: Our “Non-GAAP net income attributable to Biogen Inc.” and “Non-GAAP earnings per share – Diluted” financial measures exclude 
the following items from “GAAP net income attributable to Biogen Inc.” and “GAAP earnings per share – Diluted”: (1) purchase accounting 
and merger-related adjustments, (2) hemophilia business separation costs, (3) restructuring, business transformation and other cost-
saving initiatives, (4) stock option expense, (5) other select items and (6) their related tax effects. “Free Cash Flow” is defined as net 
cash flows provided by operating activities less purchases of property, plant and equipment and contingent consideration related to our 
acquisition of Fumapharm AG as disclosed within our Annual Report on Form 10-K. We believe that the disclosure of these Non-GAAP 
financial measures provides additional insight into the ongoing economics of our business and reflects how we manage our business 
internally, set operational goals and forms the basis of our management incentive programs. These Non-GAAP financial measures are not in 
accordance with generally accepted accounting principles in the United States and should not be viewed in isolation or as a substitute for 
reported, or GAAP, net income attributable to Biogen Inc. and diluted earnings per share. Numbers may not foot due to rounding. Additional 
reconciliations of our Non-GAAP financial measures can be found in the Investors section of www.biogen.com.

21  |  2017 Biogen Annual Report

SAFE HARBOR: This Annual Report contains forward-looking statements, including statements relating to: our strategy and plans; potential 
of our commercial business and pipeline programs; capital allocation and investment strategy; clinical trials and data readouts and 
presentations; regulatory filings and the timing thereof; and anticipated benefits and potential of investments, collaborations and business 
development activities. These forward-looking statements may be accompanied by such words as “aim,” “anticipate,” “believe,” “could,” 
“estimate,” “expect,” “forecast,” “goal,” “intend,” “may,” “plan,” “potential,” “possible,” “will” and other words and terms of similar 
meaning. Drug development and commercialization involve a high degree of risk, and only a small number of research and development 
programs result in commercialization of a product. Results in early stage clinical trials may not be indicative of full results or results from 
later stage or larger scale clinical trials and do not ensure regulatory approval. You should not place undue reliance on these statements or 
the scientific data presented.

These statements involve risks and uncertainties that could cause actual results to differ materially from those reflected in such 
statements, including: our dependence on sales from our principal products; failure to compete effectively due to significant product 
competition in the markets for our products; difficulties in obtaining and maintaining adequate coverage, pricing and reimbursement for 
our products; the occurrence of adverse safety events, restrictions on use with our products or product liability claims; failure to protect 
and enforce our data, intellectual property and other proprietary rights and the risks and uncertainties relating to intellectual property 
claims and challenges; uncertainty of long-term success in developing, licensing or acquiring other product candidates or additional 
indications for existing products; the risk that positive results in a clinical trial may not be replicated in subsequent or confirmatory 
trials or success in early stage clinical trials may not be predictive of results in later-stage or large-scale clinical trials or trials in other 
potential indications; risks associated with clinical trials, including our ability to adequately manage clinical activities, unexpected 
concerns that may arise from additional data or analysis obtained during clinical trials, regulatory authorities may require additional 
information or further studies or may fail to approve or may delay approval of our drug candidates; risks associated with current and 
potential future healthcare reforms; problems with our manufacturing processes; risks relating to technology failures or breaches; our 
dependence on collaborators and other third parties for the development, regulatory approval and commercialization of products and 
other aspects of our business, which are outside of our control; failure to successfully execute on our growth initiatives; risks relating to 
management and key personnel changes, including attracting and retaining key personnel; risks relating to investment in and expansion 
of manufacturing capacity for future clinical and commercial requirements; failure to comply with legal and regulatory requirements; 
fluctuations in our effective tax rate; the risks of doing business internationally, including currency exchange rate fluctuations; risks related 
to commercialization of biosimilars; risks related to investment in properties; the market, interest and credit risks associated with our 
portfolio of marketable securities; risks relating to stock repurchase programs; risks relating to access to capital and credit markets; 
risks related to indebtedness; environmental risks; risks relating to the sale and distribution by third parties of counterfeit versions of our 
products; risks relating to the use of social media for our business; change in control provisions in certain of our collaboration agreements; 
risks relating to the spin-off of our hemophilia business, including risks of operational difficulties and exposure to claims and liabilities; 
and the other risks and uncertainties that are described in the Risk Factors section of our most recent annual or quarterly report and in 
other reports we have filed with the Securities and Exchange Commission.

These statements are based on our current beliefs and expectations and speak only as of April 13, 2018. We do not undertake any 
obligation to publicly update any forward-looking statements.

NOTE REGARDING TRADEMARKS: BIOGEN®, SPINRAZA®, TECFIDERA®, TYSABRI® and ZINBRYTA® are registered trademarks of Biogen. BENEPALI™, 
FLIXABI™ and IMRALDI™ are trademarks of Biogen. All other trademarks are the intellectual property of their respective owners.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Form 10-K

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2017

or

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission file number: 0-19311

BIOGEN INC.

(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction of incorporation or organization)

33-0112644
(I.R.S. Employer Identification No.)

225 Binney Street, Cambridge, Massachusetts 02142
(617) 679-2000
(Address, including zip code, and telephone number, including area code, of Registrant’s principal executive offices)
Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class
Common Stock, $0.0005 par value

Name of Each Exchange on Which Registered
The Nasdaq Global Select Market

Securities registered pursuant to Section 12(g) of the Act:
None
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 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 is not contained 

herein, and will not be contained, to the best of the 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”, “smaller reporting 
company” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer 
Non-accelerated filer 
(Do not check if a smaller reporting company)

Accelerated filer 
Smaller reporting company 
Emerging growth company 

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended 
transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) 
of the Exchange Act. 

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the 

Act).    Yes 

        No 

The aggregate market value of the registrant’s common stock held by non-affiliates of the registrant (without admitting 

that any person whose shares are not included in such calculation is an affiliate) computed by reference to the price at 
which the common stock was last sold as of the last business day of the registrant’s most recently completed second 
fiscal quarter was $57,220,188,450.

As of January 26, 2018, the registrant had 211,562,686 shares of common stock, $0.0005 par value, outstanding.

Portions of the definitive proxy statement for our 2018 Annual Meeting of Stockholders are incorporated by reference 

DOCUMENTS INCORPORATED BY REFERENCE

into Part III of this report.

 
BIOGEN INC.
ANNUAL REPORT ON FORM 10-K
For the Year Ended December 31, 2017
TABLE OF CONTENTS

Item 1.

Business

Item 1A.

Risk Factors

Item 1B. Unresolved Staff Comments

Properties

Legal Proceedings

Mine Safety Disclosures

Item 2.

Item 3.

Item 4.

Item 5.

Item 6.

Item 7.

PART I

PART II

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

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

Item 8.

Item 9.

Item 9A.

Financial Statements and Supplementary Data

Changes in and Disagreements with Accountants on Accounting and Financial 
Disclosure
Controls and Procedures

Item 9B. Other Information

Item 10. Directors, Executive Officers and Corporate Governance

Item 11.

Executive Compensation

PART III

Item 12.

Item 13.

Security Ownership of Certain Beneficial Owners and Management and Related 
Stockholder Matters
Certain Relationships and Related Transactions, and Director Independence

Item 14.

Principal Accounting Fees and Services

Item 15.

Exhibits and Financial Statement Schedules

Item 16.

Form 10-K Summary

PART IV

Signatures

Consolidated Financial Statements

Page

1

33

46

46

47

47

48

50

53

88

90

90

91

91

92

92

92

92

92

93
93

97

F- 1

 
 
NOTE REGARDING FORWARD-LOOKING STATEMENTS 

This report contains forward-looking statements that are being made pursuant to the provisions of the Private 

Securities Litigation Reform Act of 1995 (the Act) with the intention of obtaining the benefits of the “Safe Harbor” 
provisions of the Act. These forward-looking statements may be accompanied by such words as “aim,” “anticipate,” 
“believe,” “could,” “estimate,” “expect,” “forecast,” “intend,” “may,” “plan,” “potential,” “possible,” “will” and other 
words and terms of similar meaning. Reference is made in particular to forward-looking statements regarding:

• 

the anticipated amount, timing and accounting of revenues, contingent payments, milestone, royalty and other 
payments under licensing, collaboration or acquisition agreements, tax positions and contingencies, 
collectability of receivables, pre-approval inventory, cost of sales, research and development costs, 
compensation and other selling, general and administrative expenses, amortization of intangible assets, foreign 
currency exchange risk, estimated fair value of assets and liabilities and impairment assessments;

•  expectations, plans and prospects relating to sales, pricing, growth and launch of our marketed and pipeline 

products;

•  our plans to invest in emerging growth areas such as pain, ophthalmology, neuropsychiatry and acute 

neurology;

• 

the potential impact of increased product competition in the markets in which we compete;

•  patent terms, patent term extensions, patent office actions and expected availability and period of regulatory 

exclusivity;

• 

• 

• 

the costs and timing of potential clinical trials, filings and approvals, and the potential therapeutic scope of the 
development and commercialization of our and our collaborators’ pipeline products;

the drivers for growing our business, including our plans and intent to commit resources relating to business 
development opportunities and research and development programs;

the anticipated benefits and the potential costs and expenses related to our current or future initiatives to 
streamline our operations and reallocate resources; 

•  our manufacturing capacity, use of third-party contract manufacturing organizations and plans and timing 

relating to the expansion of our manufacturing capabilities, including anticipated investments and activities in 
new manufacturing facilities;

• 

• 

• 

• 

the potential impact on our results of operations and liquidity of the United Kingdom's (U.K.) intent to 
voluntarily depart from the European Union (E.U.);

the impact of the continued uncertainty of the credit and economic conditions in certain countries in Europe 
and our collection of accounts receivable in such countries;

the potential impact of healthcare reform in the United States (U.S.) and measures being taken worldwide 
designed to reduce healthcare costs to constrain the overall level of government expenditures, including the 
impact of pricing actions and reduced reimbursement for our products;

the timing, outcome and impact of administrative, regulatory, legal and other proceedings related to our patents 
and other proprietary and intellectual property rights, tax audits, assessments and settlements, pricing matters, 
sales and promotional practices, product liability and other matters;

• 

lease commitments, purchase obligations and the timing and satisfaction of other contractual obligations;

•  our ability to finance our operations and business initiatives and obtain funding for such activities;

• 

• 

the anticipated benefits, costs and tax treatment of the spin-off of our hemophilia business; and

the impact of new laws, including the Tax Cuts and Jobs Act of 2017, and accounting standards.

These forward-looking statements involve risks and uncertainties, including those that are described in Item 

1A. Risk Factors included in this report and elsewhere in this report that could cause actual results to differ 
materially from those reflected in such statements. You should not place undue reliance on these statements. 
Forward-looking statements speak only as of the date of this report. Except as required by law, we do not undertake 
any obligation to publicly update any forward-looking statements, whether as a result of new information, future 
developments or otherwise.

NOTE REGARDING COMPANY AND PRODUCT REFERENCES

References in this report to:

•  “Biogen,” the “company,” “we,” “us” and “our” refer to Biogen Inc. and its consolidated subsidiaries;

•  “RITUXAN” refers to both RITUXAN (the trade name for rituximab in the U.S., Canada and Japan) and MabThera 

(the trade name for rituximab outside the U.S., Canada and Japan); and

•  "ELOCTATE" refers to both ELOCTATE (the trade name for Antihemophilic Factor (recombinant), Fc Fusion Protein 
in the U.S., Canada and Japan) and ELOCTA (the trade name for Antihemophilic Factor (recombinant), Fc Fusion 
Protein in the E.U.).

NOTE REGARDING TRADEMARKS

AVONEX®, PLEGRIDY®, RITUXAN®, RITUXAN HYCELA®, SPINRAZA®, TECFIDERA®, TYSABRI® and ZINBRYTA® 

are registered trademarks of Biogen. BENEPALITM, FLIXABITM, FUMADERMTM and IMRALDITM are trademarks of Biogen. 
ALPROLIX®, ELOCTATE®, ENBREL®, FAMPYRATM, GAZYVA®, HUMIRA®, OCREVUS®, REMICADE® and other 
trademarks referenced in this report are the property of their respective owners.

Item 1.  

Business

Overview

PART I

Biogen is a global biopharmaceutical company focused on discovering, developing and delivering worldwide 
innovative therapies for people living with serious neurological and neurodegenerative diseases, including in our core 
growth areas of multiple sclerosis (MS) and neuroimmunology, Alzheimer’s disease (AD) and dementia, movement 
disorders and neuromuscular disorders, including spinal muscular atrophy (SMA) and amyotrophic lateral sclerosis 
(ALS). We also plan to invest in emerging growth areas such as pain, ophthalmology, neuropsychiatry and acute 
neurology. In addition, we are employing innovative technologies to discover potential treatments for rare and genetic 
disorders, including new ways of treating diseases through gene therapy in the previously mentioned areas. We also 
manufacture and commercialize biosimilars of advanced biologics.

Our marketed products include TECFIDERA, AVONEX, PLEGRIDY, TYSABRI, ZINBRYTA and FAMPYRA for the 
treatment of MS, SPINRAZA for the treatment of SMA and FUMADERM for the treatment of severe plaque psoriasis. 
We also have certain business and financial rights with respect to RITUXAN for the treatment of non-Hodgkin's 
lymphoma, chronic lymphocytic leukemia (CLL) and other conditions, GAZYVA for the treatment of CLL and follicular 
lymphoma, OCREVUS for the treatment of primary progressive MS and relapsing MS and other potential anti-CD20 
therapies under a collaboration agreement with Genentech, Inc. (Genentech), a wholly-owned member of the Roche 
Group. 

We support our drug discovery and development efforts through the commitment of significant resources to 
discovery, research and development programs and business development opportunities, particularly within our core 
and emerging growth areas. For nearly two decades we have led in the research and development of new therapies 
to treat MS, resulting in our leading portfolio of MS treatments. Now our research is focused on additional 
improvements in the treatment of MS, such as the development of next generation therapies for MS, with a goal to 
reverse or possibly repair damage caused by the disease. We are also applying our scientific expertise to solve 
some of the most challenging and complex diseases, including AD, progressive supranuclear palsy (PSP), a rare 
condition that affects movement, speech, vision and cognitive function, Parkinson's disease and ALS.

Our innovative drug development and commercialization activities are complemented by our biosimilar therapies 

that expand access to medicines and reduce the cost burden for healthcare systems. We are leveraging our 
manufacturing capabilities and know-how to develop, manufacture and market biosimilars through Samsung Bioepis, 
our joint venture with Samsung BioLogics Co. Ltd. (Samsung Biologics). Under our commercial agreement, we market 
and sell BENEPALI, an etanercept biosimilar referencing ENBREL, and FLIXABI, an infliximab biosimilar referencing 
REMICADE, in the E.U.

1

Key Developments

During 2017 we had a number of key developments affecting our business.

Corporate Matters

2017 Corporate Strategy

In July 2017 we announced an updated strategic 

framework to optimize the value of our MS business 
while investing for the future across our core growth 
areas of MS and neuroimmunology, AD and dementia, 
movement disorders and neuromuscular diseases, 
including SMA and ALS. We also plan to invest in 
emerging growth areas such as pain, ophthalmology, 
neuropsychiatry and acute neurology. 

In order to deliver positive results in the near 

term while investing in the next stages of our growth, 
we will focus on the following strategic priorities:

•  maximizing the resilience of our MS core 

business;

•  accelerating efforts in SMA as a significant new 

growth opportunity;

•  developing and expanding our neuroscience 

portfolio;

• 

focusing our capital allocation efforts to drive 
investment for future growth; and

•  creating a leaner and simpler operating model to 

streamline our operations and reallocate 
resources towards prioritized research and 
development and commercial value creation 
opportunities.

In October 2017, in connection with creating a 
leaner and simpler operating model, we approved a 
corporate restructuring program intended to 
streamline our operations and reallocate resources. 
We expect to make total non-recurring operating and 
capital expenditures of up to $170.0 million, primarily 
in 2018, and our goal is to redirect resources of up to 
$400.0 million annually by 2020 to prioritized 
research and development and other value creation 
opportunities.

TECFIDERA Settlement and License Agreement

In January 2017 we entered into a settlement 

and license agreement with Forward Pharma A/S 
(Forward Pharma). Pursuant to this agreement, we 
obtained U.S. and rest of world licenses to Forward 
Pharma’s intellectual property, including Forward 
Pharma’s intellectual property related to TECFIDERA.  
In exchange, we paid Forward Pharma $1.25 billion in 
cash. During the fourth quarter of 2016 we 
recognized a pre-tax charge of $454.8 million and in 
the first quarter of 2017 we recognized intangible 
assets of $795.2 million related to this agreement. 

2

We have two intellectual property disputes with 
Forward Pharma, one in the U.S. and one in the E.U., 
concerning intellectual property related to TECFIDERA. 
In March 2017 the U.S. intellectual property dispute 
was decided in our favor. Forward Pharma appealed to 
the U.S. Court of Appeals for the Federal Circuit and 
the appeal is pending. We evaluated the recoverability 
of the U.S. asset acquired from Forward Pharma and 
recorded an impairment charge in the first quarter of 
2017 to adjust the carrying value of the acquired U.S. 
asset to fair value reflecting the impact of the 
developments in the U.S. legal dispute. In January 
2018 the European Patent Office (EPO) announced its 
decision revoking Forward Pharma’s European Patent 
No. 2 801 355. Forward Pharma has stated that it 
expects to file an appeal to the Technical Board of 
Appeal of the EPO. Based upon our assessment of 
these rulings, we continue to amortize the remaining 
net book value of the U.S. and rest of world intangible 
assets in our consolidated statements of income 
utilizing an economic consumption model.

For additional information on our settlement and 

license agreement with Forward Pharma and related 
intangible assets, please read Note 7, Intangible 
Assets and Goodwill, to our consolidated financial 
statements included in this report. For additional 
information on these disputes, please read Note 21, 
Litigation, to our consolidated financial statements 
included in this report.

Tax Reform

The Tax Cuts and Jobs Act of 2017 (the 2017 

Tax Act), which was signed into law on December 22, 
2017, has resulted in significant changes to the U.S. 
corporate income tax system. These changes include 
a federal statutory rate reduction from 35% to 21%, 
the elimination or reduction of certain domestic 
deductions and credits and limitations on the 
deductibility of interest expense and executive 
compensation. The 2017 Tax Act also transitions 
international taxation from a worldwide system to a 
modified territorial system and includes base erosion 
prevention measures on non-U.S. earnings, which has 
the effect of subjecting certain earnings of our foreign 
subsidiaries to U.S. taxation as global intangible low-
taxed income (GILTI). These changes are effective 
beginning in 2018.

The 2017 Tax Act also includes a one-time 
mandatory deemed repatriation tax on accumulated 
foreign subsidiaries' previously untaxed foreign 
earnings (the Transition Toll Tax).

Changes in tax rates and tax laws are accounted 

Under this agreement, we are responsible for the 

for in the period of enactment. Therefore, during the 
year ended December 31, 2017, we recorded a 
charge totaling $1,173.6 million related to our current 
estimate of the provisions of the 2017 Tax Act, 
including a $989.6 million expense under the 
Transition Toll Tax. The Transition Toll Tax will be paid 
over an eight-year period, starting in 2018, and will 
not accrue interest.

The 2017 Tax Act will provide us with flexibility in 

deploying our cash resources to advance our 
business interests. We expect that it will have a 
modest positive effect on our income tax rate in 2018 
and a potential incremental benefit thereafter.

Hemophilia Spin-Off

On February 1, 2017, we completed the spin-off 

of our hemophilia business, Bioverativ Inc. 
(Bioverativ), as an independent, publicly traded 
company trading under the symbol "BIVV" on the 
Nasdaq Global Select Market. The spin-off was 
accomplished through the distribution of all the then 
outstanding shares of common stock of Bioverativ to 
Biogen shareholders, who received one share of 
Bioverativ common stock for every two shares of 
Biogen common stock they owned. The separation 
and distribution was structured to be tax-free for 
shareholders for federal income tax purposes. 
Bioverativ assumed all of our rights and obligations 
under our collaboration agreement with Swedish 
Orphan Biovitrum AB (Sobi) and our collaboration and 
license agreement with Sangamo Biosciences Inc. 
(Sangamo).

Our consolidated results of operations and 

financial position included in this report reflect the 
financial results of our hemophilia business for all 
periods through January 31, 2017.

For additional information on the spin-off of our 

hemophilia business, please read Note 3, Hemophilia 
Spin-Off, to our consolidated financial statements 
included in this report.

BIIB093 Acquisition

In May 2017 we completed an asset purchase of 

the Phase 3-ready candidate BIIB093 (intravenous 
glibencamide) (formerly known as CIRARA) from 
Remedy Pharmaceuticals Inc. (Remedy). The target 
indication for BIIB093 is large hemispheric infarction 
(LHI), a severe form of ischemic stroke where brain 
swelling (cerebral edema) often leads to a 
disproportionately large share of stroke-related 
morbidity and mortality. The U.S. Food and Drug 
Administration (FDA) recently granted BIIB093 Orphan 
Drug Designation for severe cerebral edema in 
patients with acute ischemic (AI) stroke. The FDA has 
also granted BIIB093 Fast Track designation.

3

future development and commercialization of 
BIIB093. Remedy will share in the cost of 
development for the target indication for BIIB093 in 
LHI stroke.

For additional information on our transaction with 

Remedy, please read Note 2, Acquisitions, to our 
consolidated financial statements included in this 
report.

BIIB092 License Agreement

In June 2017 we completed an exclusive license 
agreement with Bristol-Myers Squibb Company (BMS) 
for BIIB092 (formerly known as BMS-986168), a 
Phase 2-ready experimental medicine with potential in 
AD and PSP. BIIB092 is an antibody targeting tau, the 
protein that forms the deposits, or tangles, in the 
brain associated with AD and other neurodegenerative 
tauopathies such as PSP. 

Under this agreement, we received worldwide 

rights to BIIB092 and are responsible for the full 
development and global commercialization of BIIB092 
in AD and PSP. 

For additional information on our collaboration 

arrangement with BMS, please read Note 20, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

Eisai Collaboration Agreement

In October 2017 we entered into a new 

collaboration agreement with Eisai Co. Ltd. (Eisai) for 
the joint development and commercialization of 
aducanumab, our anti-amyloid beta antibody 
candidate for AD (Aducanumab Collaboration 
Agreement). Under the Aducanumab Collaboration 
Agreement, we will continue to lead the ongoing 
Phase 3 development of aducanumab and will remain 
responsible for 100% of development costs for 
aducanumab until April 2018. Eisai will then 
reimburse us for 15% of aducanumab development 
expenses for the period April 2018 through December 
2018, and 45% thereafter. Upon commercialization, 
both companies will co-promote aducanumab with a 
region-based profit split.

In addition, we and Eisai will continue to jointly 
develop two product candidates for AD, BAN2401, a 
monoclonal antibody that targets amyloid beta 
aggregates, and E2609, a BACE inhibitor. 

We and Eisai will co-promote AVONEX, TYSABRI 
and TECFIDERA in Japan in certain settings and Eisai 
will distribute AVONEX, TYSABRI, TECFIDERA and 
PLEGRIDY in India and other Asia-Pacific markets, 
excluding China.

For additional information on our collaboration 

Ionis Collaboration Agreement

In December 2017 we entered into a new 
collaboration agreement with Ionis Pharmaceuticals 
Inc. (Ionis) to identify new antisense oligonucleotide 
(ASO) drug candidates for the treatment of SMA. 
Under this agreement, we have the option to license 
therapies arising out of this collaboration and will be 
responsible for the development and 
commercialization of these therapies.

For additional information on our new 
collaboration arrangement with Ionis, please read 
Note 20, Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

Management Changes

During 2017 we appointed several new 

executives, each of whom has significant experience 
in the biopharmaceutical industry and is a leader in 
his or her functional area. These appointments 
included:

•  Michel Vounatsos, Chief Executive Officer; 

• 

Jeffrey Capello, Executive Vice President and 
Chief Financial Officer; 

•  Ginger Gregory, Executive Vice President and 

Chief Human Resources Officer; and 

•  Chirfi Guindo, Executive Vice President and Head 

of Global Marketing, Market Access and 
Customer Innovation. 

For additional information on these and our other 
executive officers, please read the subsection entitled 
“Our Executive Officers” included in this report.

arrangement with Eisai, please read Note 20, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

Neurimmune Collaboration Agreement

In October 2017 we amended the terms of our 

collaboration and license agreement with 
Neurimmune Subone AG (Neurimmune). Under the 
amended agreement, we made a $150.0 million 
payment to Neurimmune, which is reflected as a 
charge to noncontrolling interests, in exchange for a 
15% reduction in royalty rates payable on products 
developed under the agreement, including on 
potential commercial sales of aducanumab. Our 
royalty rates payable on products developed under the 
agreement, including on potential commercial sales of 
aducanumab, will now range from the high single 
digits to low-teens. 

Under the amended agreement, we also have an 
option that will expire in April 2018 to further reduce 
our royalty rates payable on products developed under 
the agreement, including on potential commercial 
sales of aducanumab, by an additional 5% in 
exchange for a $50.0 million payment to 
Neurimmune.

For additional information on our collaboration 

arrangement with Neurimmune, please read Note 19, 
Investments in Variable Interest Entities, to our 
consolidated financial statements included in this 
report.

BIIB098 License Agreement

In November 2017 we entered into an exclusive 

license and collaboration agreement with Alkermes 
Pharma Ireland Limited, a subsidiary of Alkermes plc 
(Alkermes), for BIIB098 (formerly known as ALKS 
8700), an oral monomethyl fumarate (MMF) prodrug 
in Phase 3 development for the treatment of relapsing 
forms of MS. 

Under this agreement, we received an exclusive, 

worldwide license to develop and commercialize 
BIIB098 and will pay Alkermes a royalty on potential 
worldwide net sales of BIIB098. Beginning in 2018 we 
are responsible for all development expenses related 
to BIIB098. Alkermes will maintain responsibility for 
regulatory interactions with the FDA through the  
potential approval of the New Drug Application (NDA) 
for BIIB098 for the treatment of MS.

For additional information on our collaboration 

arrangement with Alkermes, please read Note 20, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

4

Product/Pipeline Developments

Core Growth Areas

Multiple Sclerosis and Neuroimmunology

TECFIDERA (dimethyl fumarate)

• 

In April 2017 we presented new real-world data evidence supporting TECFIDERA at the 69th annual meeting of 
the American Academy of Neurology (AAN) in Boston, MA.

We presented a comparison of real-world data that supported TECFIDERA’s strong efficacy relative to other oral 
MS therapies, both in newly-treated MS patients and those previously treated with a prior disease modifying 
therapy (DMT). Subgroup analyses of the open-label studies PROTEC and RESPOND assessed TECFIDERA in 
early MS and early switch patients, respectively. Results showed that TECFIDERA significantly reduced the 
annualized relapse rate over one year in the early MS subgroups, including those who switched to TECFIDERA 
from a prior DMT. Additional data presented at the AAN meeting affirmed the well-characterized, long-term safety 
profile of TECFIDERA in patients treated for up to nine years.

TYSABRI (natalizumab)

• 

• 

In February 2017 the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines 
Agency (EMA) adopted a positive opinion to update the TYSABRI E.U. label with pediatric information to remove 
the contraindication in pediatrics and to describe the results of the post-marketing meta-analysis of pediatric 
data. The label update entitles us to apply for a six-month extension to the E.U. patent Supplementary 
Protection Certificate.

In April 2017 we presented new real-world data from the TYSABRI Observational Program that confirmed the 
efficacy of TYSABRI and demonstrated that early and continued treatment leads to better clinical outcomes. 
These data were presented at the 69th annual meeting of AAN in Boston, MA.

FAMPYRA (prolonged-release fampridine tablets)

• 

In May 2017 the European Commission (EC) granted a standard marketing authorization for FAMPYRA for 
walking improvement in people with MS. 

ZINBRYTA (daclizumab)

• 

• 

• 

In July 2017 the EMA announced that it had provisionally restricted the use of ZINBRYTA to adult patients with 
highly active relapsing disease despite a full and adequate course of treatment with at least one DMT or with 
rapidly evolving severe relapsing MS who are unsuitable for treatment with other DMTs. These restrictions 
followed the initiation of an EMA review (referred to as an Article 20 Procedure) of ZINBRYTA following the 
report of a case of fatal fulminant liver failure, as well as four cases of serious liver injury.

In October 2017, as part of the Article 20 Procedure of ZINBRYTA, the EMA Pharmacovigilance Risk 
Assessment Committee (PRAC) completed its assessment and recommended a further set of restrictions on 
the use of ZINBRYTA by MS patients.

In November 2017 the CHMP adopted an opinion, confirming the PRAC's recommendations, for further 
restrictions to minimize the risk of serious liver injury with ZINBRYTA, including restriction of its use to adult 
patients with relapsing forms of MS who have had an inadequate response to at least two DMTs and for whom 
treatment with any other DMT is contraindicated or otherwise unsuitable. In January 2018 the EC adopted a 
final and legally-binding decision, which concluded the Article 20 Procedure, confirming the CHMP opinion. As a 
result of the CHMP's recommendation of these restrictions, we recorded net impairment charges related to 
intangible assets, inventory, property, plant and equipment and prepaid tax assets, totaling approximately 
$190.8 million. Offsetting these amounts was an unrecorded tax benefit related to certain ZINBRYTA related 
assets totaling approximately $93.8 million.

Opicinumab (anti-LINGO-1)

• 

In October 2017 we initiated the Phase 2b clinical trial AFFINITY, designed to evaluate opicinumab as an 
investigational add-on therapy in people with relapsing MS. The trial follows the comprehensive review of 
SYNERGY, a Phase 2 trial, which identified a specific population that may be more likely to respond to 
treatment.

5

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

In October 2017 we presented data supporting opicinumab as a potential therapy to repair damage to the 
central nervous system caused by MS. These data were presented at the seventh Joint Meeting of the 
European Committee for Treatment and Research in MS and Americas Committee for Treatment and Research 
in MS (ECTRIMS-ACTRIMS).

Neuromuscular Disorders

SPINRAZA (nusinersen)

In January 2017 we presented new data from the Phase 3 ENDEAR study of SPINRAZA, which demonstrated a 
statistically significant reduction in the risk of death or permanent ventilation in SPINRAZA-treated infants with 
SMA compared to untreated infants. The data were presented at the British Pediatric Neurology Association 
annual conference in Cambridge, U.K.

In April 2017 the CHMP of the EMA adopted a positive opinion recommending the granting of a marketing 
authorization in the E.U. for SPINRAZA to treat patients with SMA.

In April 2017 we presented Phase 3 end of study SPINRAZA data from CHERISH, which demonstrated a highly 
statistically significant and clinically meaningful improvement in motor function in children with later-onset 
(most likely to develop Type 2 or Type 3) SMA compared to untreated children. The overall findings continued to 
support the efficacy and favorable safety profile of SPINRAZA across a broad range of individuals with SMA.  

We also presented interim data from the Phase 2 NURTURE study evaluating SPINRAZA for the treatment of 
infants under six weeks old with genetically diagnosed SMA who were presymptomatic at treatment initiation. At 
the time of the interim analysis, infants (n=20) were enrolled for a median of 317.5 days, and all infants were 
alive and none required respiratory intervention (chronic non-invasive ventilation, invasive ventilation or 
tracheostomy). Further, most infants achieved motor milestone and growth parameter gains generally 
consistent with normal development, such as head control, independent sitting, standing and walking 
independently, as measured by validated scales.

These data were presented at the 69th annual meeting of AAN in Boston, MA.

In June 2017 the EC granted a marketing authorization for SPINRAZA for the treatment of 5q SMA in pediatric 
and adult patients in the E.U. SPINRAZA is the first approved treatment in the E.U. for SMA. SPINRAZA was 
reviewed under the EMA’s accelerated assessment program.

In June 2017 we presented robust efficacy and safety data from Phase 2 and Phase 3 SPINRAZA studies at the 
Cure SMA 2017 Annual SMA Conference in Orlando, FL. Data demonstrated motor function improvements in 
infants on permanent ventilation and no increase in the risk of adverse events in children with scoliosis.

In July 2017 the Japanese Ministry of Health, Labor and Welfare approved the use of SPINRAZA for the 
treatment of infantile SMA.

In September 2017 the Japanese Ministry of Health, Labor and Welfare approved the use of SPINRAZA for the 
treatment of pediatric and adult patients with SMA.

In October 2017 we presented new data at the 22nd International Congress of the World Muscle Society 
demonstrating that earlier initiation of treatment with SPINRAZA may improve motor function outcomes in 
infants and children with SMA. Results demonstrated the favorable efficacy and safety profile of SPINRAZA.

In October 2017 we and Ionis were awarded the 2017 Prix Galien USA Award for Best Biotechnology Product for 
SPINRAZA.

In November 2017 the end of study results from ENDEAR, the Phase 3 study of SPINRAZA, were published in 
The New England Journal of Medicine.

Alzheimer's Disease and Dementia

Aducanumab (BIIB037)

• 

• 

In March 2017 we presented data from research of aducanumab at the 13th International Conference on 
Alzheimer’s and Parkinson’s Diseases (AD/PD™) in Vienna, Austria.

In April 2017 we presented data from a Phase 1b study of aducanumab at the 69th annual meeting of the AAN 
in Boston, MA. This data was previously presented at the Clinical Trials on Alzheimer’s Disease (CTAD) meeting 

6

• 

• 

• 

• 

in December 2016 and included interim results from the titration cohort of the placebo-controlled period of the 
Phase 1b study as well as data from the first year of the long-term extension (LTE).

In May 2017 we announced that we had amended the protocol of the Phase 3 trials of aducanumab. ApoE4 
carriers that previously would be on a high dose of 6 mg/kg may now be titrated up to 10 mg/kg. This 
amendment is being reviewed by regulatory bodies and clinical study ethic independent review boards globally 
and may be implemented on a country by country basis. The change has already been incorporated in the U.S.

In July 2017 we presented a new post-hoc analysis of the Phase 1b PRIME study of aducanumab at the 
Alzheimer’s Association International Conference in London, U.K. Data presented included changes in the 
cognitive and functional subscores of the clinical dementia rating score. Aducanumab slowed decline on both 
the cognitive and functional assessments compared to placebo, and the results of all subgroups studied were 
consistent with the overall study population.

In August 2017 we announced results from a recently conducted analysis of the LTE of our ongoing Phase 1b 
study of aducanumab. The updated analyses include data from the placebo-controlled period and the LTE for 
patients treated with aducanumab up to 24 months in the titration cohort and up to 36 months in the fixed-
dose cohorts. The results are consistent with previously reported analyses from this ongoing Phase 1b study 
and support the design of the ongoing Phase 3 studies of aducanumab for early AD.

In November 2017 we presented new data from the LTE of our ongoing Phase 1b study of aducanumab at the 
CTAD meeting in Boston, MA. The data included results from patients in the Phase 1b study who were treated 
with a gradually increased dose of aducanumab for up to 24 months and those who were treated with a fixed 
dose of 3, 6 or 10 mg/kg aducanumab for up to 36 months. The results are consistent with previously reported 
analyses from the Phase 1b study and support the design of the ongoing Phase 3 studies of aducanumab for 
early AD.

BAN2401 (A  mAb)

• 

In December 2017 we announced that an Independent Data Monitoring Committee determined that BAN2401 
did not meet the criteria for success based on a Bayesian analysis at 12 months as the primary endpoint in an 
856-patient Phase 2 clinical study. Following the predefined study protocol, the blinded study will continue and 
a comprehensive final analysis will be conducted at 18 months seeking to demonstrate clinically significant 
results. The results of the final analysis are expected to be obtained during the second half of 2018.

BIIB076

• 

In January 2017 we initiated a Phase 1 trial of BIIB076, an anti-tau monoclonal antibody, in healthy volunteers 
and participants with AD.

BIIB092

• 

In June 2017 we dosed our first patient in our Phase 2 study of BIIB092 for PSP.

BIIB080 (also known as Ionis-MAPTRx)

• 

In October 2017 our collaboration partner Ionis announced the initiation of a Phase 1/2a clinical study of 
IONIS-MAPTRx in patients with mild AD. IONIS-MAPTRx is an antisense drug designed to selectively reduce the 
production of microtubule-associated protein tau (MAPT), or tau protein, in the brain. We have an option to 
develop and commercialize IONIS-MAPTRx.

Movement Disorders

BIIB054 (anti-alpha-synuclein antibody)

• 

In March 2017 we presented data from research of BIIB054, our investigational treatment for Parkinson’s 
disease, at the 13th International Conference on Alzheimer’s and Parkinson’s Diseases (AD/PD™) in Vienna, 
Austria.

• 

In July 2017 we completed enrollment in the Phase 1 study of BIIB054 in both healthy volunteers and patients 
with early onset Parkinson’s disease.

• 

In January 2018 we dosed our first patient in our Phase 2 SPARK study of BIIB054 in Parkinson's disease.

7

Emerging Growth Areas

Acute Neurology

Natalizumab ( 4-integrin inhibitor) - Acute Ischemic Stroke

• 

In August 2017 we completed enrollment in the Phase 2b ACTION2 study evaluating the effects of natalizumab 
versus placebo on clinical measures of functional independence and activities of daily living in acute ischemic 
stroke patients.

Natalizumab - Epilepsy

• 

In October 2017 we initiated the Phase 2 OPUS study evaluating the efficacy, safety and tolerability of 
natalizumab in drug-resistant focal epilepsy.

Biosimilars

Samsung Bioepis - Biogen's Joint Venture with Samsung Biologics

BENEPALI (Etanercept)

• 

In June 2017 we presented real-world evidence from investigator-initiated studies supported by us 
demonstrating sustained efficacy and safety of, and high acceptance and adherence in patients initiating 
treatment with, BENEPALI. These data were presented at the Annual European Congress of Rheumatology 
(EULAR) in Madrid.

IMRALDI (Adalimumab)

• 

In June 2017 the CHMP of the EMA issued a positive opinion for IMRALDI, an adalimumab biosimilar candidate 
referencing HUMIRA.

• 

In August 2017 the EC granted a marketing authorization for IMRALDI. 

Genentech Relationship

Anti-CD20 Therapies

OCREVUS (ocrelizumab)

• 

In March 2017 the FDA approved OCREVUS, a humanized anti-CD20 monoclonal antibody, for the treatment of 
relapsing MS (RMS) and primary progressive MS (PPMS).

• 

In July 2017 OCREVUS was approved in Australia for the treatment of RMS and PPMS.

• 

In September 2017 OCREVUS was approved in Switzerland for the treatment of RMS and PPMS.

• 

In January 2018 the EC granted a marketing authorization for OCREVUS for the treatment of RMS and PPMS.

• 

• 

• 

RITUXAN (rituximab)

In March 2017 Roche announced that the FDA’s Oncologic Drugs Advisory Committee voted unanimously that 
the benefit-risk of rituximab/hyaluronidase for subcutaneous (under the skin) injection was favorable for the 
treatment of certain blood cancers. This new co-formulation includes the same monoclonal antibody as 
intravenous RITUXAN and hyaluronidase, a molecule that helps to deliver medicine under the skin.

In June 2017 the FDA approved RITUXAN HYCELA (rituximab and hyaluronidase human) for subcutaneous 
injection for the treatment of adults with previously untreated and relapsed or refractory follicular lymphoma, 
previously untreated diffuse large B-cell lymphoma and CLL. This new treatment includes the same monoclonal 
antibody as intravenous RITUXAN in combination with hyaluronidase human, an enzyme that helps to deliver 
rituximab under the skin. 

GAZYVA

In November 2017 the FDA approved GAZYVA in combination with chemotherapy, followed by GAZYVA alone in 
those who responded, for people with previously untreated advanced follicular lymphoma. The approval is 
based on results from the Phase 3 GALLIUM study, which showed superior progression-free survival for patients 
who received this GAZYVA-based regimen compared with those who received a RITUXAN-based regimen as an 
initial therapy. 

8

Other

Idiopathic Pulmonary Fibrosis

BG00011 (STX-100)

• 

In October 2017 we reported that BG00011 (STX-100) achieved proof of biology in a Phase 2a study in 
patients with idiopathic pulmonary fibrosis (IPF), a chronic irreversible and ultimately fatal disease characterized 
by a progressive decline in lung function. We plan to initiate a Phase 2b study for BG00011 in 2018.

Marketed Products

The following graphs show our revenues by product and revenues from anti-CD20 therapeutic programs and 

geography as a percentage of revenues for the years ended December 31, 2017, 2016 and 2015.

(1) Interferon includes AVONEX and PLEGRIDY
(2) Other includes ZINBRYTA, FAMPYRA, ELOCTATE, ALPROLIX, 
FUMADERM, BENEPALI and FLIXABI

9

Product sales for TECFIDERA, AVONEX and TYSABRI and anti-CD20 therapeutic programs for RITUXAN each 

accounted for more than 10% of our total revenues for the years ended December 31, 2017, 2016 and 2015. For 
additional financial information about our product and other revenues and geographic areas where we operate, 
please read Note 25, Segment Information, to our consolidated financial statements, Item 6. Selected Financial Data 
and Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations included in this 
report. A discussion of the risks attendant to our operations is set forth in Item 1A. Risk Factors included in this 
report. 

Multiple Sclerosis and Neuroimmunology

We develop, manufacture and market a number of products designed to treat patients with MS. MS is a 
progressive neurological disease in which the body loses the ability to transmit messages along nerve cells, leading 
to a loss of muscle control, paralysis and, in some cases, death. Patients with active RMS experience an uneven 
pattern of disease progression characterized by periods of stability that are interrupted by flare-ups of the disease 
after which the patient returns to a new baseline of functioning. 

Our MS products and major markets include:

Product

Indication

Collaborator

Major Markets

Relapsing forms of MS in the U.S.

Relapsing-remitting MS (RRMS) in 
the E.U.

None

Relapsing forms of MS

None

Relapsing forms of MS in the U.S.

RRMS in the E.U.

Relapsing forms of MS

Crohn's disease in the U.S.

None

None

Relapsing forms of MS

AbbVie Inc. (AbbVie)

U.S.
Canada
France
Germany
Italy
Spain
U.K.

U.S.
France
Germany
Japan
Italy
Spain
U.K.

U.S.
France
Germany
Italy
Spain
U.K.

U.S.
France
Germany
Italy
Spain
U.K.

U.S.
Germany

Walking ability for patients with MS

Acorda Therapeutics, Inc.
(Acorda)

France
Germany

10

Neuromuscular Diseases

SMA is characterized by loss of motor neurons in the spinal cord and lower brain stem, resulting in severe and 

progressive muscular atrophy and weakness. Ultimately, individuals with the most severe type of SMA can become 
paralyzed and have difficulty performing the basic functions of life, like breathing and swallowing. Due to a loss of, or 
defect in, the SMN1 gene, people with SMA do not produce enough survival motor neuron (SMN) protein, which is 
critical for the maintenance of motor neurons. The severity of SMA correlates with the amount of SMN protein. 
People with Type 1 SMA, the most severe life-threatening form, produce very little SMN protein and do not achieve 
the ability to sit without support or live beyond two years without respiratory support. People with Type 2 and Type 3 
SMA produce greater amounts of SMN protein and have less severe, but still life-altering, forms of SMA.

In December 2016 the FDA approved SPINRAZA for the treatment of SMA in pediatric and adult patients. In 

June 2017 the EC approved SPINRAZA for the treatment of SMA in pediatric and adult patients in the E.U. The 
Japanese Ministry of Health, Labor and Welfare approved SPINRAZA for the treatment of infantile SMA in July 2017 
and for the treatment of pediatric and adult patients with SMA in September 2017.

Our products for SMA and major markets include: 

Product

Indication

Collaborator

Major Markets

SMA

Ionis

U.S.
France
Germany
Japan
Turkey

Biosimilars

Biosimilars are a group of biologic medicines that are similar to currently available biologic therapies known as 
originators. Under our agreement with Samsung Bioepis, we manufacture and commercialize two anti-TNF biosimilars 
in certain countries in the E.U.: BENEPALI, an etanercept biosimilar referencing ENBREL, and FLIXABI, an infliximab 
biosimilar referencing REMICADE. In August 2017 the EC granted a marketing authorization for IMRALDI, an 
adalimumab biosimilar referencing HUMIRA, in the E.U. 

Product

Indication

Moderate to severe rheumatoid arthritis
Progressive psoriatic arthritis
Axial spondyloarthritis
Moderate to severe plaque psoriasis

Rheumatoid arthritis
Moderate to severe Crohn's disease
Severe ulcerative colitis
Severe ankylosing spondylitis
Psoriatic arthritis
Moderate to severe plaque psoriasis

Major Markets

Germany
Norway
Sweden
U.K.

Germany

11

 
Genentech Relationships

We have a collaboration agreement with Genentech that entitles us to certain business and financial rights 

with respect to RITUXAN, GAZYVA, OCREVUS and other anti-CD20 product candidates. Current products include:

Product

Indication

Non-Hodgkin's lymphoma
CLL
Rheumatoid arthritis
Two forms of ANCA-associated vasculitis

Major Markets

U.S.
Canada

In combination with chlorambucil for previously untreated CLL
Follicular lymphoma

U.S.

RMS
PPMS

U.S.
Australia
Switzerland

For information about our anti-CD20 therapeutic programs and related agreements with Genentech, please 

read Note 1, Summary of Significant Accounting Policies, and Note 20, Collaborative and Other Relationships, to our 
consolidated financial statements included in this report.

Other

Product

Indication

Collaborator

Major Markets

Moderate to severe plaque
psoriasis

None

Germany

12

Patient Support and Access 

Distribution Arrangements

We interact with patients, advocacy 

organizations and healthcare societies in order to gain 
insights into unmet needs. The insights gained from 
these engagements help us support patients with 
services, programs and applications that are designed 
to help patients lead better lives. Among other things, 
we provide customer service and other related 
programs for our products, such as disease and 
product specific websites, insurance research 
services, financial assistance programs and the 
facilitation of the procurement of our marketed 
products. 

We are dedicated to helping patients obtain 
access to our therapies. Our patient representatives 
have access to a comprehensive suite of financial 
assistance tools. With those tools, we help patients 
understand their insurance coverage and, if needed, 
help patients compare and select new insurance 
options and programs. In the U.S., we have 
established programs that provide co-pay assistance 
or free marketed product for qualified uninsured or 
underinsured patients, based on specific eligibility 
criteria. We also provide charitable contributions to 
independent charitable organizations that assist 
patients with out-of-pocket expenses associated with 
their therapy.

Marketing and Distribution

Sales Force and Marketing

We promote our products worldwide, including in 
the U.S., most of the major countries of the E.U. and 
Japan, primarily through our own sales forces and 
marketing groups. In some countries, particularly in 
areas where we continue to expand into new 
geographic areas, we partner with third parties. 

We co-promote ZINBRYTA with AbbVie in the 
U.S., E.U. and Canadian territories and BENEPALI and 
FLIXABI with Samsung Bioepis in certain countries in 
the E.U.

We and Eisai co-promote AVONEX, TYSABRI and 

TECFIDERA in Japan in certain settings.

RITUXAN, GAZYVA and OCREVUS are marketed 

by the Roche Group and its sublicensees.

We focus our sales and marketing efforts on 
specialist physicians in private practice or at major 
medical centers. We use customary pharmaceutical 
company practices to market our products and to 
educate physicians, such as sales representatives 
calling on individual physicians, advertisements, 
professional symposia, direct mail, public relations 
and other methods. 

We distribute our products in the U.S. principally 

through wholesale distributors of pharmaceutical 
products, mail order specialty distributors or shipping 
service providers. In other countries, the distribution 
of our products varies from country to country, 
including through wholesale distributors of 
pharmaceutical products and third-party distribution 
partners who are responsible for most marketing and 
distribution activities.

AbbVie distributes ZINBRYTA in the U.S., and we 

distribute ZINBRYTA in ex-U.S. markets. 

We distribute BENEPALI and FLIXABI in certain 

countries in the E.U.

Eisai distributes AVONEX, TYSABRI, TECFIDERA 

and PLEGRIDY in India and other Asia-Pacific markets, 
excluding China.

RITUXAN, GAZYVA and OCREVUS are distributed 

by the Roche Group and its sublicensees.

Our product sales to two wholesale distributors, 

AmerisourceBergen and McKesson, each accounted 
for more than 10% of our total revenues for the years 
ended December 31, 2017, 2016 and 2015, and on 
a combined basis, accounted for approximately 56%, 
57% and 60% of our gross product revenues for the 
years ended December 31, 2017, 2016 and 2015, 
respectively. For additional information, please read 
Note 25, Segment Information, to our consolidated 
financial statements included in this report.

Patents and Other Proprietary Rights

Patents are important to obtaining and 

protecting exclusive rights in our products and product 
candidates. We regularly seek patent protection in the 
U.S. and in selected countries outside the U.S. for 
inventions originating from our research and 
development efforts. In addition, we license rights to 
various patents and patent applications. 

U.S. patents, as well as most foreign patents, 

are generally effective for 20 years from the date the 
earliest application was filed; however, U.S. patents 
that issue on applications filed before June 8, 
1995 may be effective until 17 years from the issue 
date, if that is later than the 20-year date. In some 
cases, the patent term may be extended to recapture 
a portion of the term lost during regulatory review of 
the claimed therapeutic or, in the case of the U.S., 
because of U.S. Patent and Trademark Office (USPTO) 
delays in prosecuting the application. Specifically, in 
the U.S., under the Drug Price Competition and Patent 
Term Restoration Act of 1984, commonly known as 
the Hatch-Waxman Act, a patent that covers an FDA-
approved drug may be eligible for patent term 

13

extension (for up to 5 years, but not beyond a total of 
14 years from the date of product approval) as 
compensation for patent term lost during the FDA 
regulatory review process. The duration and extension 
of the term of foreign patents varies, in accordance 
with local law. For example, supplementary protection 
certificates (SPCs) on some of our products have 
been granted in a number of European countries, 
compensating in part for delays in obtaining 
marketing approval.

Regulatory exclusivity, which may consist of 
regulatory data protection and market protection, also 
can provide meaningful protection for our products. 
Regulatory data protection provides to the holder of a 
drug or biologic marketing authorization, for a set 
period of time, the exclusive use of the proprietary 
pre-clinical and clinical data that it created at 
significant cost and submitted to the applicable 
regulatory authority to obtain approval of its product. 
After the applicable set period of time, third parties 
are then permitted to rely upon our data to file for 
approval of their abbreviated applications for, and to 
market (subject to any applicable market protection), 
their generic drugs and biosimilars referencing our 
data. Market protection provides to the holder of a 
drug or biologic marketing authorization the exclusive 
right to commercialize its product for a set period of 
time, thereby preventing the commercialization of 
another product containing the same active 
ingredient(s) during that period. Although the World 
Trade Organization's agreement on trade-related 
aspects of intellectual property rights (TRIPS) requires 
signatory countries to provide regulatory exclusivity to 
innovative pharmaceutical products, implementation 
and enforcement varies widely from country to 
country.

We also rely upon other forms of unpatented 
confidential information to remain competitive. We 
protect such information principally through 
confidentiality agreements with our employees, 
consultants, outside scientific collaborators, 
scientists whose research we sponsor and other 
advisers. In the case of our employees, these 
agreements also provide, in compliance with relevant 
law, that inventions and other intellectual property 
conceived by such employees during their employment 
shall be our exclusive property.

Our trademarks are important to us and are 

generally covered by trademark applications or 
registrations in the USPTO and the patent or 
trademark offices of other countries. We also use 
trademarks licensed from third parties, such as the 
trademark FAMPYRA which we license from Acorda. 
Trademark protection varies in accordance with local 
law, and continues in some countries as long as the 
trademark is used and in other countries as long as 
the trademark is registered. Trademark registrations 
generally are for fixed but renewable terms.

Our Patent Portfolio 

The following table describes our patents in the 
U.S. and Europe that we currently consider of primary 
importance to our marketed products, including the 
territory, patent number, general subject matter and 
expected expiration dates. Except as otherwise noted, 
the expected expiration dates include any granted 
patent term extensions and issued SPCs. In some 
instances, there are later-expiring patents relating to 
our products directed to, among other things, 
particular forms or compositions, methods of 
manufacturing or use of the drug in the treatment of 
particular diseases or conditions. We also continue to 
pursue additional patents and patent term extensions 
in the U.S. and other territories covering various 
aspects of our products that may, if issued, extend 
exclusivity beyond the expiration of the patents listed 
in the table.

14

Product
TECFIDERA

AVONEX and
PLEGRIDY
PLEGRIDY

Territory
U.S.
U.S.
U.S.
U.S.
U.S.

U.S.
U.S.
Europe

Europe
U.S.

U.S.
U.S.
U.S.
Europe

Europe

Patent No.
7,619,001
7,803,840
8,399,514
8,524,773
6,509,376

8,759,393
7,320,999
1131065

2137537
7,588,755

7,446,173
8,524,660
8,017,733
1656952

1476181

TYSABRI

U.S.

6,602,503

FAMPYRA

ZINBRYTA

SPINRAZA

U.S.
U.S.
Europe

Europe
Europe

Europe

U.S.
U.S.
U.S.
Europe

U.S.
U.S.

U.S.
U.S.

U.S.

U.S.

U.S.

U.S.

Europe

Europe

7,807,167
9,493,567
0804237

1485127
1732548

23775536

8,454,965
7,258,859
9,340,619
1539200

6,166,197
6,210,892

7,101,993
7,838,657

8,110,560

8,361,977

8,980,853

9,717,750

1910395

2548560

Footnotes follow on next page.

General Subject Matter
Methods of treatment
Methods of treatment
Methods of treatment
Methods of treatment
Formulations of dialkyl fumarates for use in the
treatment of autoimmune diseases
Formulations
Methods of treatment
Formulations of dialkyl fumarates and their use for
treating autoimmune diseases
Methods of use
Use of recombinant beta interferon for
immunomodulation
Polymer conjugates of interferon beta-1a
Methods of treatment
Polymer conjugates of interferon beta-1a
Polymer conjugates of interferon-beta-1a and uses
thereof
Polymer conjugates of interferon-beta-1a and uses
thereof
Humanized recombinant antibodies; nucleic acids and
host cells; processes for production; therapeutic
compositions; methods of use
Methods of treatment
Methods of treatment
Humanized immunoglobulins; nucleic acids;
pharmaceutical compositions; medical uses
Methods of use
Sustained-release aminopyridine compositions for
increasing walking speed in patients with MS
Sustained-release aminopyridine compositions for
treating MS
Methods of treatment
Methods of treatment
Daclizumab HYP compositions
Anti-IL-2-receptor antibody for use in a method of
treating a subject with MS
Oligomeric Compounds Having Pyrimidine Nucleotide(s)
Alteration of Cellular Behavior By Antisense Modulation
of MRNA Processing
Oligonucleotides Containing 2’-O-Modified Purines
SMA Treatment Via Targeting of SMN2 Splice Site
Inhibitory Sequences
SMA Treatment Via Targeting of SMN2 Splice Site
Inhibitory Sequences
Compositions And Methods For Modulation of SMN2
Splicing
Compositions And Methods For Modulation of SMN2
Splicing
Compositions and Methods For Modulation of SMN2
Splicing
Compositions And Methods For Modulation of SMN2
Splicing
Compositions And Methods For Modulation of SMN2
Splicing

15

Patent 
Expiration(1)
2018
2018
2028
2018
2019

2019
2018
2019(2)

2028(3)
2026

2022
2023
2027
2019

2023(4)

2020

2023
2027
2020(5)

2023
2025(6)

2025(7)

2024
2024
2032
2023

2017
2018

2023
2027

2025

2030

2030

2030

2026

2026

(1)  In addition to patent protection, certain of our products are entitled to regulatory exclusivity in the U.S. and the E.U. expected 

until the dates set forth below:

Territory

PLEGRIDY

Product
TECFIDERA U.S.
E.U.
U.S.
E.U.
E.U.
U.S.
E.U.
U.S.
E.U.

FAMPYRA
ZINBRYTA

SPINRAZA

Expected Expiration
2018
2024
2026
2024
2021
2028
*
2023
2027**

*ZINBRYTA was not designated a new active substance at the time of its approval in the E.U. and is not automatically entitled to regulatory 
exclusivity. Regulatory exclusivity may, however, be available for independent development of known active substances. We intend to assert 
the protection of its data on this basis.

**SPINRAZA may be eligible for an additional two years exclusivity in Europe based on the orphan pediatric indication.

(2)  This patent is subject to granted SPCs in certain European countries, which extended the patent term in those countries 

to 2024. 

(3)  This patent was revoked in a European opposition. This decision is being appealed. The patent is subject to granted 

SPCs in certain European countries, which extended the patent term in those countries to 2029.

(4)  This patent is subject to granted SPCs in certain European countries, which extended the patent term in those countries 

to 2028.

(5)  Reflects SPCs granted in most European countries and pediatric extension in some countries.

(6)  This patent is subject to granted SPCs in certain European countries, which extended the patent term in those countries 

to 2026.

(7)  This patent is subject to granted SPCs in certain European countries, which extended the patent term in those countries 

to 2026.

The existence of patents does not guarantee our right to practice the patented technology or commercialize the 

patented product. Patents relating to pharmaceutical, biopharmaceutical and biotechnology products, compounds 
and processes, such as those that cover our existing compounds, products and processes and those that we will 
likely file in the future, do not always provide complete or adequate protection. Litigation, interferences, oppositions, 
inter partes reviews or other proceedings are, have been and may in the future be necessary in some instances to 
determine the validity and scope of certain of our patents, regulatory exclusivities or other proprietary rights, and in 
other instances to determine the validity, scope or non-infringement of certain patent rights claimed by third parties 
to be pertinent to the manufacture, use or sale of our products. We may also face challenges to our patents, 
regulatory exclusivities and other proprietary rights covering our products by manufacturers of generics and 
biosimilars. A discussion of certain risks and uncertainties that may affect our patent position, regulatory 
exclusivities and other proprietary rights is set forth in Item 1A. Risk Factors included in this report, and a discussion 
of legal proceedings related to certain patents described above is set forth in Note 21, Litigation, to our consolidated 
financial statements included in this report.

16

Additional information about the competition that 

our marketed products face is set forth below.

Multiple Sclerosis

TECFIDERA, AVONEX, PLEGRIDY, TYSABRI and 

ZINBRYTA each compete with one or more of the 
following products: 

Competing Product
AUBAGIO (teriflunomide)
BETASERON/BETAFERON
(interferon-beta-1b)
COPAXONE 
(glatiramer acetate)
EXTAVIA 
(interferon-beta-1b)
GILENYA (fingolimod)

GLATOPA (glatiramer
acetate)
LEMTRADA
(alemtuzumab)
OCREVUS (ocrelizumab)
REBIF 
(interferon-beta-1)

Competitor
Sanofi
Bayer Group

Teva Pharmaceuticals
Industries Ltd.
Novartis AG

Novartis AG

Sandoz, a division of
Novartis AG
Sanofi

Genentech
Merck KGaA (and co-
promoted with Pfizer Inc.
in the U.S.)

FAMPYRA is indicated as a treatment to improve 

walking in adult patients with MS who have walking 
disability and is the first treatment that addresses 
this unmet medical need with demonstrated efficacy 
in people with all types of MS. FAMPYRA is currently 
the only therapy approved to improve walking in 
patients with MS. 

Competition in the MS market is intense. Along 

with us, a number of companies are working to 
develop additional treatments for MS that may in the 
future compete with our MS products. One such 
product that was approved in the U.S. in 2017 and in 
the E.U. in 2018 is OCREVUS, a treatment for RMS 
and PPMS that was developed by Genentech. While 
we have a financial interest in OCREVUS, future sales 
of our MS products may be adversely affected if 
OCREVUS continues to gain market share, or if other 
MS products that we or our competitors are 
developing are commercialized. Future sales may also 
be negatively impacted by the introduction of generics, 
prodrugs of existing therapeutics or biosimilars of 
existing products and other technologies.

Competition

Competition in the biopharmaceutical industry is 

intense and comes from many sources, including 
specialized biotechnology firms and large 
pharmaceutical companies. Many of our competitors 
are working to develop or have commercialized 
products similar to those we market or are developing 
and have considerable experience in undertaking 
clinical trials and in obtaining regulatory approval to 
market pharmaceutical products. Certain of these 
companies have substantially greater financial, 
marketing and research and development resources 
than we do.

We believe that competition and leadership in 
the industry is based on managerial and technological 
excellence and innovation as well as establishing 
patent and other proprietary positions through 
research and development. The achievement of a 
leadership position also depends largely upon our 
ability to maximize the approval, acceptance and use 
of products resulting from research and the 
availability of adequate financial resources to fund 
facilities, equipment, personnel, clinical testing, 
manufacturing and marketing. Another key aspect of 
remaining competitive within the industry is recruiting 
and retaining leading scientists and technicians. We 
believe that we have been successful in attracting and 
retaining skilled and experienced scientific personnel.

Competition among products approved for sale 

may be based, among other things, on patent 
position, product efficacy, safety, convenience/delivery 
devices, reliability, availability and price. In addition, 
early entry of a new pharmaceutical product into the 
market may have important advantages in gaining 
product acceptance and market share. Accordingly, 
the relative speed with which we can develop 
products, complete the testing and approval process 
and supply commercial quantities of products will 
have a significant impact on our competitive position.

The introduction of new products or 
technologies, including the development of new 
processes or technologies by competitors or new 
information about existing products or technologies, 
may result in increased competition for our marketed 
products or pricing pressure on our marketed 
products. It is also possible that the development of 
new or improved treatment options or standards of 
care or cures for the diseases our products treat 
could reduce or eliminate the use of our products or 
may limit the utility and application of ongoing clinical 
trials for our product candidates. We may also face 
increased competitive pressures as a result of 
generics and the emergence of biosimilars in the U.S. 
and E.U. If a generic or biosimilar version of one of 
our products were approved, it could reduce our sales 
of that product.

17

Research and Development Programs

A commitment to research is fundamental to our 

mission. Our research efforts are focused on better 
understanding the underlying biology of diseases so 
we can discover and deliver treatments that have the 
potential to make a real difference in the lives of 
patients with high unmet medical needs. By applying 
our expertise in biologics and our growing capabilities 
in small molecule, antisense, gene therapy, gene 
editing and other technologies, we target specific 
medical needs where we believe new or better 
treatments are needed.

We intend to continue committing significant 
resources to research and development opportunities.  
As part of our ongoing research and development 
efforts, we have devoted significant resources to 
conducting clinical studies to advance the 
development of new pharmaceutical products and 
technologies and to explore the utility of our existing 
products in treating disorders beyond those currently 
approved in their labels.

Spinal Muscular Atrophy

SPINRAZA is the only approved treatment for 

SMA. We are aware of other products in development 
that, if successfully developed and approved, may 
compete with SPINRAZA in the SMA market. 

Psoriasis

FUMADERM competes with several different 
types of therapies in the psoriasis market within 
Germany, including oral systemics such as 
methotrexate and cyclosporine.

Biosimilars

BENEPALI and FLIXABI, the two biosimilars we 
currently manufacture and commercialize in the E.U. 
for Samsung Bioepis, compete with their applicable 
reference products, ENBREL and REMICADE, 
respectively, as well as other biosimilars of those 
reference products. 

Genentech Relationships in Other Indications

RITUXAN and GAZYVA in Oncology

RITUXAN and GAZYVA compete with a number of 
therapies in the oncology market, including TREANDA 
(bendamustine HCL), ARZERRA (ofatumumab), 
IMBRUVICA (ibrutinib) and ZYDELIG (idelalisib). 

We also expect that over time GAZYVA will 
increasingly compete with RITUXAN in the oncology 
market. In addition, we are aware of other anti-CD20 
molecules, including biosimilars, in development that, 
if successfully developed and approved, may compete 
with RITUXAN and GAZYVA in the oncology market.

RITUXAN in Rheumatoid Arthritis

RITUXAN competes with several different types 

of therapies in the rheumatoid arthritis market, 
including, among others, traditional disease-modifying 
anti-rheumatic drugs such as steroids, methotrexate 
and cyclosporine, TNF inhibitors, ORENCIA 
(abatacept), ACTEMRA (tocilizumab) and XELJANZ 
(tofacitinib).

We are also aware of other products, including 

biosimilars, in development that, if successfully 
developed and approved, may compete with RITUXAN 
in the rheumatoid arthritis market. 

18

The table below highlights our current research and development programs that are in clinical trials and the 
current phase of such programs. Drug development involves a high degree of risk and investment, and the status, 
timing and scope of our development programs are subject to change. Important factors that could adversely affect 
our drug development efforts are discussed in Item 1A. Risk Factors included in this report. 

MS and Neuroimmunology

BIIB098 (monomethly fumarate prodrug)* - MS

Phase 3

Opicinumab (anti-LINGO-1) - MS

Phase 2

Core
Growth
Areas

Alzheimer's Disease and Dementia

Elenbecestat (E2609)* - Alzheimer's

BIIB092 (anti-tau mAb) - Alzheimer's

BIIB076 (anti-tau mAb)* - Alzheimer's

BIIB080 (IONIS-MAPTRx)* - Alzheimer's

BIIB092 (anti-tau mAb) - PSP

Parkinson's Disease and Movement Disorders

BIIB054 (anti-alpha-synuclein mAb) - Parkinson's

Phase 3

Phase 3

Phase 2

Phase 1

Phase 1

Phase 1

Phase 2

Phase 2

Emerging
Growth
Areas

Neuromuscular Disease Including SMA and ALS

BIIB067 (IONIS-SOD1Rx)* - ALS

Phase 1

Pain

BIIB074 (Vixotrigine) - Trigeminal Neuralgia

BIIB074 (Nav1.7) - PLSR#

Phase 2

Phase 2

Ophthalmology

BIIB087 (gene therapy)* - XLRS^

Phase 1/2

Acute Neurology

Natalizumab - AI Stroke

BIIB093 (glibenclamide IV) - LHI Stroke

Natalizumab - Epilepsy

Dapirolzumab pegol (anti-CD40L)* - SLE@

Other

BG00011 (STX-100) - IPF

BIIB059 (anti-BDCA2) - SLE@

Phase 2

Phase 2

Phase 2

Phase 2

Phase 2

Phase 2

* Collaboration programs
# Painful Lumbosacral Radiculophath (PLSR)
^ X-linked Retinoschisis (XLRS)
@ Systemic Lupus Erythematosus (SLE)

For information about certain of our agreements with collaborators and other third parties, please read the 

subsection entitled “Business Relationships” below and Note 20, Collaborative and Other Relationships, to our 
consolidated financial statements included in this report.

pipeline and provide us with certain rights to existing 
and potential new products and technologies. For 
additional information on certain of these 
relationships, including their ongoing financial and 
accounting impact on our business, please read Note 
19, Investments in Variable Interest Entities, and Note 
20, Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

Business Relationships

As part of our business strategy, we establish 
business relationships, including joint ventures and 
collaborative arrangements with other companies, 
universities and medical research institutions, to 
assist in the clinical development and/or 
commercialization of certain of our products and 
product candidates and to provide support for our 
research programs. We also evaluate opportunities for 
acquiring products or rights to products and 
technologies that are complementary to our business 
from other companies, universities and medical 
research institutions.

Below is a brief description of certain business 

relationships and collaborations that expand our 

19

AbbVie, Inc.

Eisai Co., Ltd.

We have a collaboration agreement with AbbVie 

for the development and commercialization of 
ZINBRYTA in MS. Under this agreement, we and 
AbbVie conduct ZINBRYTA co-promotion activities in 
the U.S., E.U. and Canadian territories, and we are 
responsible for all manufacturing and research and 
development activities.

For information on the Article 20 Procedure of 

ZINBRYTA and resulting impairment of ZINBRYTA 
related assets, please read Note 20, Collaborative 
and Other Relationships, to our consolidated financial 
statements included in this report.

Acorda Therapeutics, Inc.

We have a collaboration and license agreement 
with Acorda to develop and commercialize products 
containing fampridine, such as FAMPYRA, in markets 
outside the U.S. We are responsible for all regulatory 
activities and the future clinical development of 
related products in those markets.

Alkermes

We have an exclusive license and collaboration 

agreement with Alkermes to develop and 
commercialize BIIB098, an oral MMF prodrug in Phase 
3 development for the treatment of relapsing forms of 
MS.

Applied Genetic Technologies Corporation

We have a collaboration agreement with Applied 
Genetic Technologies Corporation (AGTC) to develop 
gene-based therapies for multiple ophthalmic 
diseases. This collaboration is focused on the 
development of a clinical-stage candidate for X-linked 
Retinoschisis (XLRS) and a preclinical candidate for 
the treatment of X-linked Retinitis Pigmentosa (XLRP), 
for which we were granted worldwide 
commercialization rights. This agreement also 
provides us with options to early stage discovery 
programs in two ophthalmic diseases and one non-
ophthalmic condition.

Bristol-Myers Squibb Company

We have an exclusive license agreement with 
BMS for the development and commercialization of 
BIIB092. Under this agreement, we received 
worldwide rights to BIIB092 and are responsible for 
the full development and global commercialization of 
BIIB092 in AD and PSP. 

We have a collaboration agreement with Eisai to 

jointly develop and commercialize E2609 and 
BAN2401, two Eisai product candidates for the 
treatment of AD. Eisai serves as the global 
operational and regulatory lead for both E2609 and 
BAN2401 and all costs, including research, 
development, sales and marketing expenses, are 
shared equally between us and Eisai. Following 
marketing approval in major markets, we will co-
promote E2609 and BAN2401 with Eisai and share 
profits equally. 

We also have the Aducanumab Collaboration 

Agreement with Eisai for the joint development and 
commercialization of aducanumab. Under the 
Aducanumab Collaboration Agreement, the two 
companies will co-promote aducanumab with a region-
based profit split and we will continue to lead the 
ongoing Phase 3 development of aducanumab. 

We and Eisai will co-promote AVONEX, TYSABRI 
and TECFIDERA in Japan in certain settings and Eisai 
will distribute AVONEX, TYSABRI, TECFIDERA and 
PLEGRIDY in India and other Asia-Pacific markets, 
excluding China.

Genentech (Roche Group)

We have a collaboration agreement with 
Genentech which entitles us to certain financial and 
other rights with respect to RITUXAN, GAZYVA, 
OCREVUS and other anti-CD20 product candidates. 

Ionis Pharmaceuticals, Inc.

We have an exclusive, worldwide option and 
collaboration agreement with Ionis relating to the 
development and commercialization of up to three 
gene targets, and an exclusive, worldwide option and 
collaboration agreement with Ionis under which both 
companies are responsible for the development and 
commercialization of SPINRAZA for the treatment of 
SMA. 

We also have research collaboration agreements 

with Ionis, under which both companies perform 
discovery level research and will develop and 
commercialize new ASO drug candidates for the 
treatment of SMA and additional antisense and other 
therapeutics for the treatment of neurological 
disorders.

Neurimmune

We have a collaboration and license agreement 

with Neurimmune for the development and 
commercialization of antibodies for the treatment of 
AD, including aducanumab. Under this agreement, we 
are responsible for the development, manufacturing 
and commercialization of all licensed products.

20

Samsung Bioepis

Regulatory

We and Samsung Biologics established a joint 
venture, Samsung Bioepis, to develop, manufacture 
and market biosimilar pharmaceuticals. We also have 
an agreement with Samsung Bioepis to 
commercialize, over a 10-year term, three anti-TNF 
biosimilar product candidates in specified E.U. 
countries and, in the case of BENEPALI, Japan. Under 
this agreement, we are manufacturing and 
commercializing BENEPALI, an etanercept biosimilar 
referencing ENBREL, and FLIXABI, an infliximab 
biosimilar referencing REMICADE. 

In addition to our joint venture and 

commercialization agreement with Samsung Bioepis, 
we license certain of our proprietary technology to 
Samsung Bioepis in connection with Samsung 
Bioepis' development, manufacture and 
commercialization of its biosimilar products. We also 
provide technical development and technology 
transfer services to Samsung Bioepis, and 
manufacture clinical and commercial quantities of 
bulk drug substance of Samsung Bioepis' biosimilar 
products.

University of Pennsylvania

We have a collaboration and alliance with the 

University of Pennsylvania (UPenn) to advance gene 
therapy and gene editing technologies. The 
collaboration is primarily focused on the development 
of therapeutic approaches that target the eye, skeletal 
muscle and the central nervous system. The alliance 
is also focused on the research and validation of next-
generation gene transfer technology using adeno-
associated virus gene delivery vectors and exploring 
the expanded use of genome editing technology as a 
potential therapeutic platform.

Our current and contemplated activities and the 

products, technologies and processes that result from 
such activities are subject to substantial government 
regulation.

Regulation of Pharmaceuticals

Product Approval and Post-Approval Regulation in 

the U.S.

APPROVAL PROCESS

Before new pharmaceutical products may be 
sold in the U.S., preclinical studies and clinical trials 
of the products must be conducted and the results 
submitted to the FDA for approval. With limited 
exceptions, the FDA requires companies to register 
both pre-approval and post-approval clinical trials and 
disclose clinical trial results in public databases. 
Failure to register a trial or disclose study results 
within the required time periods could result in 
penalties, including civil monetary penalties. Clinical 
trial programs must establish efficacy, determine an 
appropriate dose and dosing regimen, and define the 
conditions for safe use. This is a high-risk process 
that requires stepwise clinical studies in which the 
candidate product must successfully meet 
predetermined endpoints. The results of the 
preclinical and clinical testing of a product are then 
submitted to the FDA in the form of a Biologics 
License Application (BLA) or a New Drug Application 
(NDA). In response to a BLA or NDA, the FDA may 
grant marketing approval, request additional 
information or deny the application if it determines 
the application does not provide an adequate basis 
for approval.

Product development and receipt of regulatory 

approval takes a number of years, involves the 
expenditure of substantial resources and depends on 
a number of factors, including the severity of the 
disease in question, the availability of alternative 
treatments, potential safety signals observed in 
preclinical or clinical tests and the risks and benefits 
of the product as demonstrated in clinical trials. The 
FDA has substantial discretion in the product approval 
process, and it is impossible to predict with any 
certainty whether and when the FDA will grant 
marketing approval. The agency may require the 
sponsor of a BLA or NDA to conduct additional clinical 
studies or to provide other scientific or technical 
information about the product, and these additional 
requirements may lead to unanticipated delay or 
expense. Furthermore, even if a product is approved, 
the approval may be subject to limitations based on 
the FDA's interpretation of the existing pre-clinical or 
clinical data. 

21

The FDA has developed four distinct approaches 

intended to make therapeutically important drugs 
available as rapidly as possible, especially when the 
drugs are the first available treatment or have 
advantages over existing treatments: accelerated 
approval, fast track, breakthrough therapy and priority 
review.

•  Accelerated Approval: The FDA may grant 

“accelerated approval” status to products that 
treat serious or life-threatening illnesses and 
that provide meaningful therapeutic benefits to 
patients over existing treatments. Under this 
pathway, the FDA may approve a product based 
on surrogate endpoints, or clinical endpoints 
other than survival or irreversible morbidity. 
When approval is based on surrogate endpoints 
or clinical endpoints other than survival or 
morbidity, the sponsor will be required to conduct 
additional post-approval clinical studies to verify 
and describe clinical benefit. Under the FDA's 
accelerated approval regulations, if the FDA 
concludes that a drug that has been shown to be 
effective can be safely used only if distribution or 
use is restricted, it may require certain post-
marketing restrictions as necessary to assure 
safe use. In addition, for products approved 
under accelerated approval, sponsors may be 
required to submit all copies of their promotional 
materials, including advertisements, to the FDA 
at least 30 days prior to initial dissemination. 
The FDA may withdraw approval under 
accelerated approval after a hearing if, for 
instance, post-marketing studies fail to verify any 
clinical benefit, it becomes clear that restrictions 
on the distribution of the product are inadequate 
to ensure its safe use, or if a sponsor fails to 
comply with the conditions of the accelerated 
approval.

•  Fast Track Status: The FDA may grant "fast track" 
status to products that treat a serious condition 
and have data demonstrating the potential to 
address an unmet medical need or a drug that 
has been designated as a qualified infectious 
disease product.

•  Breakthrough Therapy: The FDA may grant 

“breakthrough therapy” status to drugs designed 
to treat, alone or in combination with another 
drug or drugs, a serious or life-threatening 
disease or condition and for which preliminary 
clinical evidence suggests a substantial 
improvement over existing therapies. Such drugs 
need not address an unmet need, but are 
nevertheless eligible for expedited review if they 
offer the potential for an improvement. 
Breakthrough therapy status entitles the sponsor 
to earlier and more frequent meetings with the 

22

FDA regarding the development of nonclinical 
and clinical data and permits the FDA to offer 
product development or regulatory advice for the 
purpose of shortening the time to product 
approval. Breakthrough therapy status does not 
guarantee that a product will be developed or 
reviewed more quickly and does not ensure FDA 
approval.

•  Priority Review: Priority Review only applies to 

applications (original or efficacy supplement) for 
a drug that treats a serious condition and, if 
approved, would provide a significant 
improvement in safety or effectiveness of the 
treatment, diagnosis or prevention of serious 
conditions when compared to standard 
applications. Priority Review may also be granted 
for any supplement that proposes a labeling 
change due to studies completed in response to 
a written request from the FDA for pediatric 
studies, for an application for a drug that has 
been designated as a qualified infectious 
disease product, or any application or 
supplement for a drug submitted with a priority 
review voucher.

In December 2016, the FDA issued us a rare 
pediatric disease priority review voucher in 
connection with the approval of SPINRAZA. 

POST-MARKETING STUDIES

Regardless of the approval pathway employed, 
the FDA may require a sponsor to conduct additional 
post-marketing studies as a condition of approval to 
provide data on safety and effectiveness. If a sponsor 
fails to conduct the required studies, the agency may 
withdraw its approval. In addition, if the FDA 
concludes that a drug that has been shown to be 
effective can be safely used only if distribution or use 
is restricted, it can mandate post-marketing 
restrictions as necessary to assure safe use. In such 
a case, the sponsor may be required to establish 
rigorous systems to assure use of the product under 
safe conditions. These systems are usually referred 
to as Risk Evaluation and Mitigation Strategies 
(REMS). The FDA can impose financial penalties for 
failing to comply with certain post-marketing 
commitments, including REMS. In addition, any 
changes to an approved REMS must be reviewed and 
approved by the FDA prior to implementation.

ADVERSE EVENT REPORTING

We monitor information on side effects and 

adverse events reported during clinical studies and 
after marketing approval and report such information 
and events to regulatory agencies. Non-compliance 
with the FDA's safety reporting requirements may 
result in civil or criminal penalties. Side effects or 
adverse events that are reported during clinical trials 

can delay, impede or prevent marketing approval. 
Based on new safety information that emerges after 
approval, the FDA can mandate product labeling 
changes, impose a new REMS or the addition of 
elements to an existing REMS, require new post-
marketing studies (including additional clinical trials), 
or suspend or withdraw approval of the product. These 
requirements may affect our ability to maintain 
marketing approval of our products or require us to 
make significant expenditures to obtain or maintain 
such approvals.

APPROVAL OF CHANGES TO AN APPROVED 

PRODUCT

If we seek to make certain types of changes to 

an approved product, such as adding a new indication, 
making certain manufacturing changes or changing 
manufacturers or suppliers of certain ingredients or 
components, the FDA will need to review and approve 
such changes in advance. In the case of a new 
indication, we are required to demonstrate with 
additional clinical data that the product is safe and 
effective for a use other than that initially approved. 
FDA regulatory review may result in denial or 
modification of the planned changes, or requirements 
to conduct additional tests or evaluations that can 
substantially delay or increase the cost of the planned 
changes.

REGULATION OF PRODUCT ADVERTISING AND 

PROMOTION

The FDA regulates all advertising and promotion 
activities and communications for products under its 
jurisdiction both before and after approval. Pursuant 
to FDA guidance, a company can make safety and 
efficacy claims from data either in or consistent with 
the label. However, physicians may prescribe legally 
available drugs for uses that are not described in the 
drug's labeling. Such off-label uses are common 
across medical specialties, and often reflect a 
physician's belief that the off-label use is the best 
treatment for patients. The FDA does not regulate the 
behavior of physicians in their choice of treatments, 
but FDA regulations do impose stringent restrictions 
on manufacturers' communications regarding off-label 
uses. Failure to comply with applicable FDA 
requirements may subject a company to adverse 
publicity, enforcement action by the FDA, corrective 
advertising and the full range of civil and criminal 
penalties available to the government. 

Regulation of Combination Products

Combination products are defined by the FDA to 

include products comprising two or more regulated 
components (e.g., a biologic and a device). Biologics 
and devices each have their own regulatory 
requirements, and combination products may have 
additional requirements. Some of our marketed 

23

products meet this definition and are regulated under 
this framework and similar regulations outside the 
U.S., and we expect that some of our pipeline product 
candidates may be evaluated for regulatory approval 
under this framework as well. 

Product Approval and Post-Approval Regulation 

Outside the U.S.

We market our products in numerous 
jurisdictions outside the U.S. Most of these 
jurisdictions have product approval and post-approval 
regulatory processes that are similar in principle to 
those in the U.S. In Europe, for example, where a 
substantial part of our ex-U.S. efforts are focused, 
there are several tracks for marketing approval, 
depending on the type of product for which approval is 
sought. Under the centralized procedure, a company 
submits a single application to the EMA. The 
marketing authorization application is similar to the 
NDA or BLA in the U.S. and is evaluated by the CHMP, 
the expert scientific committee of the EMA 
responsible for human medicines. If the CHMP 
determines that the marketing authorization 
application fulfills the requirements for quality, safety 
and efficacy and that the medicine has a positive 
benefit risk balance, it will adopt a positive opinion 
recommending grant of the marketing authorization by 
the EC. The CHMP opinion is not binding, but is 
typically adopted by the EC. A marketing application 
approved by the EC is valid in all member states of 
the E.U. The centralized procedure is required for all 
biological products, orphan medicinal products and 
new treatments for neurodegenerative disorders, and 
it is available for certain other products, including 
those which constitute a significant therapeutic, 
scientific or technical innovation.

In addition to the centralized procedure, Europe 

also has: 

•  a national procedure, which requires an 

application to the competent authority of an E.U. 
country (if an application is to be made in more 
than one E.U. country, following approval in the 
first country, the applicant must submit 
applications in the other countries using the 
mutual recognition procedure); 

•  a decentralized procedure, whereby applicants 

submit identical applications to several countries 
and receive simultaneous approval, if the 
medicine has not yet been authorized in any E.U. 
country; and 

•  a mutual recognition procedure, where applicants 
that have a medicine authorized in one E.U. 
country can apply for mutual recognition of this 
authorization in other E.U. countries. 

In the E.U., there is detailed legislation on 
pharmacovigilance and extensive guidance on good 
pharmacovigilance practices.

Regardless of the approval process employed, 

various parties share responsibilities for the 
monitoring, detection and evaluation of adverse 
events post-approval, including national authorities, 
the EMA, the EC and the marketing authorization 
holder. The EMA’s PRAC is responsible for assessing 
and monitoring the safety of human medicines and 
makes recommendations on product safety issues.

In some regions, it is possible to receive an 
“accelerated” review whereby the national regulatory 
authority will commit to truncated review timelines for 
products that meet specific medical needs.

Good Manufacturing Practices

Regulatory agencies regulate and inspect 
equipment, facilities and processes used in the 
manufacturing and testing of pharmaceutical and 
biologic products prior to approving a product. If, after 
receiving approval from regulatory agencies, a 
company makes a material change in manufacturing 
equipment, location or process, additional regulatory 
review and approval may be required. We also must 
adhere to current Good Manufacturing Practices 
(cGMP) and product-specific regulations enforced by 
regulatory agencies following product approval. The 
FDA, the EMA and other regulatory agencies also 
conduct periodic visits to re-inspect equipment, 
facilities and processes following the initial approval 
of a product. If, as a result of these inspections, it is 
determined that our equipment, facilities or processes 
do not comply with applicable regulations and 
conditions of product approval, regulatory agencies 
may seek civil, criminal or administrative sanctions or 
remedies against us, including significant financial 
penalties and the suspension of our manufacturing 
operations.

Good Clinical Practices

The FDA, the EMA and other regulatory agencies 
promulgate regulations and standards for designing, 
conducting, monitoring, auditing and reporting the 
results of clinical trials to ensure that the data and 
results are accurate and that the rights and welfare of 
trial participants are adequately protected (commonly 
referred to as current Good Clinical Practices (cGCP)). 
Regulatory agencies enforce cGCP through periodic 
inspections of trial sponsors, principal investigators 
and trial sites, contract research organizations (CROs) 
and institutional review boards. If our studies fail to 
comply with applicable cGCP guidelines, the clinical 
data generated in our clinical trials may be deemed 
unreliable and relevant regulatory agencies may 
require us to perform additional clinical trials before 
approving our marketing applications. Noncompliance 

24

can also result in civil or criminal sanctions. We rely 
on third parties, including CROs, to carry out many of 
our clinical trial-related activities. Failure of such third 
parties to comply with cGCP can likewise result in 
rejection of our clinical trial data or other sanctions.

In April 2014, the EC adopted a new Clinical Trial 

Regulation, which was effective in June 2014 but is 
not expected to apply until the second half of 2019. 
The regulation harmonizes the procedures for 
assessment and governance of clinical trials 
throughout the E.U. and will require that information 
on the authorization, conduct and results of each 
clinical trial conducted in the E.U. be publicly 
available.

Approval of Biosimilars 

The Patient Protection and Affordable Care Act 

(PPACA) amended the Public Health Service Act 
(PHSA) to authorize the FDA to approve biological 
products, referred to as biosimilars or follow-on 
biologics that are shown to be highly similar to 
previously approved biological products based upon 
potentially abbreviated data packages. The biosimilar 
must show it has no clinically meaningful differences 
in terms of safety and effectiveness from the 
reference product, and only minor differences in 
clinically inactive components are allowable in 
biosimilars products. The approval pathway for 
biosimilars does, however, grant a biologics 
manufacturer a 12-year period of exclusivity from the 
date of approval of its biological product before 
biosimilar competition can be introduced. There is 
uncertainty, however, as the approval framework for 
biosimilars originally was enacted as part of the 
PPACA. In 2017 there were, and there are likely to 
continue to be, federal legislative and administrative 
efforts to repeal, substantially modify or invalidate 
some or all of the provisions of the PPACA. If the 
PPACA is repealed, substantially modified or 
invalidated, it is unclear what, if any, impact such 
action would have on biosimilar regulation.

A biosimilars approval pathway has been in place 

in the E.U. since 2003. The EMA has issued a 
number of scientific and product specific biosimilar 
guidelines, including requirements for approving 
biosimilars containing monoclonal antibodies. In the 
E.U., biosimilars are generally approved under the 
centralized procedure. The approval pathway allows 
sponsors of a biosimilar to seek and obtain regulatory 
approval based in part on reliance on the clinical trial 
data of an innovator product to which the biosimilar 
has been demonstrated, through comprehensive 
comparability studies, to be “similar”. In many cases, 
this allows biosimilars to be brought to market 
without conducting the full complement of clinical 
trials typically required for novel biologic drugs.

Orphan Drug Act

Within the U.S.

Under the U.S. Orphan Drug Act, the FDA may 
grant orphan drug designation to drugs or biologics 
intended to treat a “rare disease or condition,” which 
generally is a disease or condition that affects fewer 
than 200,000 individuals in the U.S. If a product 
which has an orphan drug designation subsequently 
receives the first FDA approval for the indication for 
which it has such designation, the product is entitled 
to orphan exclusivity, i.e., the FDA may not approve 
any other applications to market the same drug for 
the same indication for a period of seven years 
following marketing approval, except in certain very 
limited circumstances, such as if the later product is 
shown to be clinically superior to the orphan product. 
Legislation similar to the U.S. Orphan Drug Act has 
been enacted in other countries to encourage the 
research, development and marketing of medicines to 
treat, prevent or diagnose rare diseases. In the E.U., 
medicinal products that receive an orphan designation 
are entitled to 10 years of market exclusivity following 
approval, protocol assistance and access to the 
centralized procedure for marketing authorization. 
SPINRAZA has been granted orphan drug designation 
in the U.S., E.U. and Japan.

Regulation Pertaining to Pricing and 

Reimbursement

In both domestic and foreign markets, sales of 
our products depend, in part, on the availability and 
amount of reimbursement by third-party payors, 
including governments, private health plans and other 
organizations. Substantial uncertainty exists regarding 
the pricing and reimbursement of our products, and 
drug prices continue to receive significant scrutiny. 
Governments may regulate coverage, reimbursement 
and pricing of our products to control cost or affect 
utilization of our products. Challenges to our pricing 
strategies, by either government or private 
stakeholders, could harm our business. The U.S. and 
foreign governments have enacted and regularly 
consider additional reform measures that affect 
health care coverage and costs. Private health plans 
may also seek to manage cost and utilization by 
implementing coverage and reimbursement 
limitations. Other payors, including managed care 
organizations, health insurers, pharmacy benefit 
managers, government health administration 
authorities and private health insurers, seek price 
discounts or rebates in connection with the placement 
of our products on their formularies and, in some 
cases, may impose restrictions on access, coverage 
or pricing of particular drugs based on perceived 
value.

•  Medicaid: Medicaid is a joint federal and state 
program that is administered by the states for 
low income and disabled beneficiaries. Under 
the Medicaid Drug Rebate Program, we are 
required to pay a rebate for each unit of product 
reimbursed by the state Medicaid programs. The 
amount of the rebate is established by law and 
is adjusted upward if average manufacture price 
(AMP) increases more than inflation (measured 
by the Consumer Price Index - Urban). The rebate 
amount is calculated each quarter based on our 
report of current AMP and best price for each of 
our products to the Centers for Medicare & 
Medicaid Services (CMS). The requirements for 
calculating AMP and best price are complex. We 
are required to report any revisions to AMP or 
best price previously reported within a certain 
period, which revisions could affect our rebate 
liability for prior quarters. In addition, if we fail to 
provide information timely or we are found to 
have knowingly submitted false information to 
the government, the statute governing the 
Medicaid Drug Rebate Program provides for civil 
monetary penalties.

•  Medicare: Medicare is a federal program that is 
administered by the federal government. The 
program covers individuals age 65 and over as 
well as those with certain disabilities. Medicare 
Part B generally covers drugs that must be 
administered by physicians or other health care 
practitioners; are provided in connection with 
certain durable medical equipment; or are 
certain oral anti-cancer drugs and certain oral 
immunosuppressive drugs. Medicare Part B pays 
for such drugs under a payment methodology 
based on the average sales price (ASP) of the 
drugs. Manufacturers, including us, are required 
to provide ASP information to the CMS on a 
quarterly basis. The manufacturer-submitted 
information is used to calculate Medicare 
payment rates. If a manufacturer is found to 
have made a misrepresentation in the reporting 
of ASP, the governing statute provides for civil 
monetary penalties.

•  Medicare Part D provides coverage to enrolled 
Medicare patients for self-administered drugs 
(i.e., drugs that are not administered by a 
physician). Medicare Part D is administered by 
private prescription drug plans approved by the 
U.S. government. Each drug plan establishes its 
own Medicare Part D formulary for prescription 
drug coverage and pricing, which the drug plan 
may modify from time-to-time. The prescription 
drug plans negotiate pricing with manufacturers 
and pharmacies, and may condition formulary 
placement on the availability of manufacturer 

25

discounts. In addition, manufacturers, including 
us, are required to provide to the CMS a 50% 
discount on brand name prescription drugs 
utilized by Medicare Part D beneficiaries when 
those beneficiaries reach the coverage gap in 
their drug benefits.

•  Federal Agency Discounted Pricing: Our products 

are subject to discounted pricing when 
purchased by federal agencies via the Federal 
Supply Schedule (FSS). FSS participation is 
required for our products to be covered and 
reimbursed by the Veterans Administration (VA), 
Department of Defense, Coast Guard and Public 
Health Service (PHS). Coverage under Medicaid, 
Medicare and the PHS pharmaceutical pricing 
program is also conditioned upon FSS 
participation. FSS pricing is intended not to 
exceed the price that we charge our most-favored 
non-federal customer for a product. In addition, 
prices for drugs purchased by the VA, 
Department of Defense (including drugs 
purchased by military personnel and dependents 
through the TriCare retail pharmacy program), 
Coast Guard and PHS are subject to a cap on 
pricing equal to 76% of the non-federal average 
manufacturer price (non-FAMP). An additional 
discount applies if non-FAMP increases more 
than inflation (measured by the Consumer Price 
Index - Urban). In addition, if we fail to provide 
information timely or we are found to have 
knowingly submitted false information to the 
government, the governing statute provides for 
civil monetary penalties.

•  340B Discounted Pricing: To maintain coverage 

of our products under the Medicaid Drug Rebate 
Program and Medicare Part B, we are required to 
extend significant discounts to certain covered 
entities that purchase products under Section 
340B of the PHS pharmaceutical pricing 
program. Purchasers eligible for discounts 
include hospitals that serve a disproportionate 
share of financially needy patients, community 
health clinics and other entities that receive 
certain types of grants under the PHSA. For all of 
our products, we must agree to charge a price 
that will not exceed the amount determined 
under statute (the “ceiling price”) when we sell 
outpatient drugs to these covered entities. In 
addition, we may, but are not required to, offer 
these covered entities a price lower than the 
340B ceiling price. The 340B discount formula is 
based on AMP and is generally similar to the 
level of rebates calculated under the Medicaid 
Drug Rebate Program. 

Outside the U.S.

Outside the U.S., our products are paid for by a 
variety of payors, with governments being the primary 
source of payment. Governments may determine or 
influence reimbursement of products and may also 
set prices or otherwise regulate pricing. Negotiating 
prices with governmental authorities can delay 
commercialization of our products. Governments may 
use a variety of cost-containment measures to control 
the cost of products, including price cuts, mandatory 
rebates, value-based pricing and reference pricing 
(i.e., referencing prices in other countries and using 
those reference prices to set a price). Budgetary 
pressures in many countries are continuing to cause 
governments to consider or implement various cost-
containment measures, such as price freezes, 
increased price cuts and rebates and expanded 
generic substitution and patient cost-sharing. 

Regulation Pertaining to Sales and Marketing

We are subject to various federal and state laws 
pertaining to health care “fraud and abuse,” including 
anti-kickback laws and false claims laws. Anti-
kickback laws generally prohibit a prescription drug 
manufacturer from soliciting, offering, receiving or 
paying any remuneration to generate business, 
including the purchase or prescription of a particular 
drug. Although the specific provisions of these laws 
vary, their scope is generally broad and there may be 
no regulations, guidance or court decisions that clarify 
how the laws apply to particular industry practices. 
There is therefore a possibility that our practices 
might be challenged under anti-kickback or similar 
laws. False claims laws prohibit anyone from 
knowingly and willingly presenting, or causing to be 
presented for payment to third-party payors (including 
Medicare and Medicaid), claims for reimbursed drugs 
or services that are false or fraudulent, claims for 
items or services not provided as claimed, or claims 
for medically unnecessary items or services. Our 
activities relating to the sale and marketing of our 
products may be subject to scrutiny under these laws. 
Violations of fraud and abuse laws may be punishable 
by criminal or civil sanctions, including fines and civil 
monetary penalties, and exclusion from federal health 
care programs (including Medicare and Medicaid). In 
the U.S., federal and state authorities are paying 
increased attention to enforcement of these laws 
within the pharmaceutical industry and private 
individuals have been active in alleging violations of 
the laws and bringing suits on behalf of the 
government under the federal civil False Claims Act. If 
we were subject to allegations concerning, or were 
convicted of violating, these laws, our business could 
be harmed.

26

Laws and regulations have been enacted by the 
federal government and various states to regulate the 
sales and marketing practices of pharmaceutical 
manufacturers. The laws and regulations generally 
limit financial interactions between manufacturers and 
health care providers or require disclosure to the 
government and public of such interactions. The laws 
include federal “sunshine” provisions. The sunshine 
provisions apply to pharmaceutical manufacturers 
with products reimbursed under certain government 
programs and require those manufacturers to 
disclose annually to the federal government (for re-
disclosure to the public) certain payments made to 
physicians and certain other healthcare practitioners 
or to teaching hospitals. State laws may also require 
disclosure of pharmaceutical pricing information and 
marketing expenditures. Many of these laws and 
regulations contain ambiguous requirements. Given 
the lack of clarity in laws and their implementation, 
our reporting actions could be subject to the penalty 
provisions of the pertinent federal and state laws and 
regulations. Outside the U.S., other countries have 
implemented requirements for disclosure of financial 
interactions with healthcare providers and additional 
countries may consider or implement such laws.

Other Regulations

Foreign Anti-Corruption

We are subject to various federal and foreign 

laws that govern our international business practices 
with respect to payments to government officials. 
Those laws include the U.S. Foreign Corrupt Practices 
Act (FCPA), which prohibits U.S. companies and their 
representatives from paying, offering to pay, promising 
to pay or authorizing the payment of anything of value 
to any foreign government official, government staff 
member, political party or political candidate for the 
purpose of obtaining or retaining business or to 
otherwise obtain favorable treatment or influence a 
person working in an official capacity. In many 
countries, the health care professionals we regularly 
interact with may meet the FCPA's definition of a 
foreign government official. The FCPA also requires 
public companies to make and keep books and 
records that accurately and fairly reflect their 
transactions and to devise and maintain an adequate 
system of internal accounting controls.

The laws to which we are subject also include 

the U.K. Bribery Act 2010 (Bribery Act), which 
proscribes giving and receiving bribes in the public 
and private sectors, bribing a foreign public official 
and failing to have adequate procedures to prevent 
employees and other agents from giving bribes. U.S. 
companies that conduct business in the U.K. 
generally will be subject to the Bribery Act. Penalties 
under the Bribery Act include significant fines for 

27

companies and criminal sanctions for corporate 
officers under certain circumstances.

NIH Guidelines

We seek to conduct research at our U.S. 
facilities in compliance with the current U.S. National 
Institutes of Health Guidelines for Research Involving 
Recombinant DNA Molecules (NIH Guidelines). By 
local ordinance, we are required to, among other 
things, comply with the NIH Guidelines in relation to 
our facilities in Research Triangle Park (RTP), NC and 
are required to operate pursuant to certain permits.

Other Laws

Our present and future business has been and 
will continue to be subject to various other laws and 
regulations. Various laws, regulations and 
recommendations relating to data privacy and 
protection, safe working conditions, laboratory 
practices, the experimental use of animals and the 
purchase, storage, movement, import, export and use 
and disposal of hazardous or potentially hazardous 
substances, including radioactive compounds and 
infectious disease agents, used in connection with 
our research work are or may be applicable to our 
activities. Certain agreements entered into by us 
involving exclusive license rights may be subject to 
national or international antitrust regulatory control, 
the effect of which cannot be predicted. The extent of 
government regulation, which might result from future 
legislation or administrative action, cannot accurately 
be predicted.

The European Parliament and the Council of the 

European Union adopted a comprehensive general 
data privacy regulation (GDPR) in 2016 to replace the 
current E.U. Data Protection Directive and related 
country-specific legislation. The GDPR will take effect 
in May 2018 and governs the collection and use of 
personal data in the E.U. The GDPR, which is wide-
ranging in scope, will impose several requirements 
relating to the consent of the individuals to whom the 
personal data relates, the information provided to the 
individuals, the security and confidentiality of the 
personal data, data breach notification and the use of 
third party processors in connection with the 
processing of the personal data. The GDPR will also 
impose strict rules on the transfer of personal data 
out of the E.U. to the U.S., will provide an 
enforcement authority and will impose large penalties 
for noncompliance, including the potential for fines of 
up to €20 million or 4% of the annual global revenues 
of the infringer, whichever is greater.

We also have a new oligonucleotide synthesis 
manufacturing (OSM) facility in RTP, NC. This facility 
gives us the capability to manufacture ASO drugs like 
SPINRAZA as well as our other ASO candidates 
currently in our clinical pipeline.

During the first quarter of 2016 we purchased 

land in Solothurn, Switzerland and are building a 
large-scale biologics manufacturing facility at this site. 
We expect this facility to be operational by the end of 
the decade. 

Genentech is responsible for all worldwide 
manufacturing activities for bulk RITUXAN and GAZYVA 
and has sourced the manufacture of certain bulk 
RITUXAN and GAZYVA requirements to a third party. 
Acorda supplies FAMPYRA to us pursuant to its supply 
agreement with Alkermes, Inc. and Ionis supplies the 
active pharmaceutical ingredient (API) for SPINRAZA.

Third-Party Suppliers and Manufacturers

We principally use third parties to manufacture 
the API and the final product for our small molecule 
products and product candidates, including 
TECFIDERA and FUMADERM, and the final drug 
product for our large molecule products and, to a 
lesser extent, product candidates. 

We source all of our fill-finish and the majority of 
final product assembly and storage operations for our 
products, along with a substantial part of our 
packaging operations, to a concentrated group of 
third-party contract manufacturing organizations. We 
have internal label and packaging capability for clinical 
and commercial products at our Hillerød facility. Raw 
materials, delivery devices, such as syringes and 
auto-injectors, and other supplies required for the 
production of our products and product candidates 
are procured from various third-party suppliers and 
manufacturers in quantities adequate to meet our 
needs. Continuity of supply of such raw materials, 
devices and supplies is assured using a strategy of 
dual sourcing where possible or by a risk-based 
inventory strategy. Our third-party service providers, 
suppliers and manufacturers may be subject to 
routine cGMP inspections by the FDA or comparable 
agencies in other jurisdictions and undergo 
assessment and certification by our quality 
management group.

Environmental Matters

We strive to comply in all material respects with 

applicable laws and regulations concerning the 
environment. While it is impossible to predict 
accurately the future costs associated with 
environmental compliance and potential remediation 
activities, compliance with environmental laws is not 
expected to require significant capital expenditures 
and has not had, and is not expected to have, a 
material adverse effect on our operations or 
competitive position.

Manufacturing

We are committed to ensuring an uninterrupted 
supply of medicines to patients around the world. To 
that end, we continually review our manufacturing 
capacity, capabilities, processes and facilities. We 
believe that our manufacturing facilities, together with 
the third-party contract manufacturing organizations 
we outsource to, currently provide sufficient capacity 
for our products and the contract manufacturing 
services we provide to Samsung Bioepis, our joint 
venture that develops, manufactures and markets 
biosimilars, and other strategic contract 
manufacturing partners. In light of the development of 
our pipeline, we are expanding our production capacity 
by building a large-scale biologics manufacturing 
facility in Solothurn, Switzerland. We expect this 
facility to be operational by the end of the decade.

Manufacturing Facilities

Our drug substance manufacturing facilities 

include:

Facility
RTP, North Carolina

Hillerød, Denmark

Drug Substance Manufactured
ALPROLIX
AVONEX
ELOCTATE
PLEGRIDY
TYSABRI
ZINBRYTA
Other*

TYSABRI
Biosimilars

* Other includes products manufactured for contract 

manufacturing partners

In addition to our drug substance manufacturing 

facilities, we have a drug product manufacturing 
facility and supporting infrastructure in RTP, NC 
including a parenteral facility and an oral solid dose 
products manufacturing facility. 

The parenteral facility adds capabilities and 
capacity for filling biologics into vials and is principally 
used for filling product candidates. The oral solid 
dose products facility supplements our outsourced 
small molecule manufacturing capabilities, including 
the manufacture of TECFIDERA.

28

Our Employees

As of December 31, 2017, we had approximately 7,300 employees worldwide.

Our Executive Officers (as of February 1, 2018)

Officer
Michel Vounatsos

Susan H. Alexander

Jeffrey D. Capello
Gregory F. Covino

Michael D. Ehlers, M.D., Ph.D.
Ginger Gregory, Ph.D.
Chirfi Guindo

Paul McKenzie, Ph.D.

Current Position
Chief Executive Officer

Executive Vice President, Chief Legal, Corporate Services and
Secretary
Executive Vice President and Chief Financial Officer
Vice President, Finance and Chief Accounting Officer

Executive Vice President, Research and Development
Executive Vice President and Chief Human Resources Officer
Executive Vice President and Head of Global Marketing, Market
Access and Customer Innovation
Executive Vice President, Pharmaceutical Operations and
Technology

Alfred W. Sandrock, Jr., M.D., Ph.D. Executive Vice President and Chief Medical Officer

Year
Joined
Biogen
2016

2006

2017
2012

2016
2017
2017

Age
56

61

53
52

49
50
52

52

2016

60

1998

Michel Vounatsos
Experience
Mr. Vounatsos has served as our Chief Executive Officer since January 2017. Prior to that, from April 2016 to
December 2016, Mr. Vounatsos served as our Executive Vice President and Chief Commercial Officer. Prior to
joining Biogen, Mr. Vounatsos spent 20 years at Merck where he most recently served as President, Primary Care,
Customer Business Line. In this role, he led Merck’s global primary care business unit, a role which encompassed
Merck’s cardiology-metabolic, general medicine, women’s health and biosimilars groups and developed and
instituted a strategic framework for enhancing the company’s relationships with key constituents, including the
most significant providers, payors and retailers and the world’s largest governments. Mr. Vounatsos previously held
leadership positions across Europe and in China for Merck. Prior to that, Mr. Vounatsos held management
positions at Ciba-Geigy.
Education

Universite Victor Segalen, Bordeaux II, France, C.S.C.T. Certificate in Medicine
HEC School of Management - Paris, M.B.A.

Susan H. Alexander
Experience
Ms. Alexander has served as our Executive Vice President, Chief Legal, Corporate Services and Secretary since
March 2017. Prior to that, from December 2011 to March 2017, Ms. Alexander served as our Executive Vice
President, Chief Legal Officer and Secretary and from 2006 to December 2011, as our Executive Vice President,
General Counsel and Corporate Secretary. From 2003 to January 2006, Ms. Alexander served as the Senior Vice
President, General Counsel and Corporate Secretary of PAREXEL International Corporation, a biopharmaceutical
services company. From 2001 to 2003, Ms. Alexander served as General Counsel of IONA Technologies, a software
company. From 1995 to 2001, Ms. Alexander served as Counsel at Cabot Corporation, a specialty chemicals and
performance materials company. Prior to that, Ms. Alexander was a partner at the law firms of Hinckley, Allen &
Snyder and Fine & Ambrogne.
Public Company Boards

Board of Directors of Invacare Corporation, a medical and healthcare product company

Education

Wellesley College, B.A.
Boston University School of Law, J.D.

29

Jeffrey D. Capello
Experience
Mr. Capello has served as our Executive Vice President and Chief Financial Officer since December 2017.  Prior to
that, Mr. Capello served as the Chief Financial Officer of Beacon Health Options, Inc., a behavioral health company,
with responsibility for finance, human resources, information technology, real estate and procurement, from October
2016 until November 2017. From July 2015 until September 2016, Mr. Capello was the founder and Chief
Executive Officer of Monomoy Advisors which focuses on helping companies drive shareholder value. From July
2014 until June 2015, Mr. Capello served as the Executive Vice President and Chief Financial Officer of Ortho-
Clinical Diagnostics, an in vitro diagnostics company that was acquired by the Carlyle Group from Johnson &
Johnson, with responsibility for global finance and business development. Prior to his role at Ortho-Clinical
Diagnostics, Mr. Capello served as Chief Financial Officer and Executive Vice President of Boston Scientific
Corporation, a medical device company, from March 2010 to December 2013. At Boston Scientific, Mr. Capello was
responsible for the worldwide management of Boston Scientific’s finance, information systems, business
development and corporate strategy functions. Mr. Capello joined Boston Scientific in June 2008 and served as
Senior Vice President and Chief Accounting Officer until March 2010. Prior to joining Boston Scientific, he was the
Senior Vice President and Chief Financial Officer with responsibilities for global finance and business development
at PerkinElmer, Inc., a life sciences tool company, from 2006 to 2008. Previously, he served as PerkinElmer’s Vice
President of Finance, Corporate Controller, Treasurer and Chief Accounting Officer from 2001 to 2006. Prior to his
tenure at PerkinElmer, Mr. Capello was a Partner at PricewaterhouseCoopers LLP, both in the United States and in
the Netherlands.
Public Company Boards

OvaScience, Inc., a biotechnology company
Flex Pharma, Inc., a biotechnology company

Education

University of Vermont, B.S. in Business Administration
Harvard Business School, M.B.A.

Gregory F. Covino
Experience
Mr. Covino has served as our Vice President and Chief Accounting Officer since April 2012. From June 2017 to
December 2017, Mr. Covino also served as our interim Principal Financial Officer. From March 2010 to April 2012,
Mr. Covino served at Boston Scientific Corporation, a medical device company, as Vice President, Corporate
Analysis and Control, having responsibility for the company's internal audit function, and as Vice President, Finance,
International from February 2008 to March 2010, having responsibility for the financial activities of the company's
international division. Prior to that, Mr. Covino held several finance positions at Hubbell Incorporated, an electrical
products company, including Vice President, Chief Accounting Officer and Controller from 2002 to January 2008,
Interim Chief Financial Officer from 2004 to 2005, and Director, Corporate Accounting from 1999 to 2002.
Education

Bryant University, B.S. in Business Administration

30

Michael D. Ehlers, M.D., Ph.D.
Experience
Dr. Ehlers has served as our Executive Vice President, Head of Research and Development since May 2016. Prior 
to joining Biogen, from August 2010 to April 2016, Dr. Ehlers served in leadership positions at Pfizer, Inc., a 
biopharmaceutical company, including Senior Vice President & Head BioTherapeutics R&D and Chief Scientific 
Officer, Neuroscience & Pain. Prior to that, Dr. Ehlers was the George Barth Geller Professor of Neurobiology and an 
Investigator of the Howard Hughes Medical Institute at Duke University Medical Center. He is the recipient of 
numerous awards including the Eppendorf & Science Prize in Neurobiology, the John J. Abel Award in Pharmacology, 
the Society for Neuroscience Young Investigator Award, a National Institute of Mental Health MERIT Award, the 
National Alliance for Schizophrenia and Depression Distinguished Investigator Award and the Massachusetts 
Medical Society Honored Business Leader Award. In 2013, Dr. Ehlers became the 11th recipient of the Thudichum 
Medal of the Biochemical Society of the United Kingdom. Past recipients include two Nobel laureates. Dr. Ehlers 
has authored over 100 scientific papers, has served on the Editorial Boards of Annual Reviews in Medicine, Annual 
Reviews in Pharmacology and Toxicology, the Journal of Neuroscience, the Journal of Biological Chemistry, the 
Journal of Molecular and Cellular Neuroscience and has sat on advisory committees of the National Institutes of 
Health.
Outside Affiliations

PhRMA Foundation Basic Pharmacology Advisory Committee
Janelia Research Institute Advisory Committee
McKnight Endowment Fund for Neuroscience Board
World Economic Forum Global Agenda Council on Brain Research

Education

California Institute of Technology, B.S. Chemistry
The Johns Hopkins University School of Medicine, M.D.
The Johns Hopkins University School of Medicine, Ph.D. Neuroscience

Ginger Gregory, Ph.D.
Experience
Dr. Gregory has served as our Executive Vice President and Chief Human Resources Officer since July 2017.  Prior
to joining Biogen, Dr. Gregory served as Executive Vice President and Chief Human Resources Officer at Shire PLC,
a global specialty biopharmaceutical company, from February 2014 to April 2017. Prior to that, Dr. Gregory held
executive-level human resources positions for several multinational companies across a variety of industries,
including Dunkin’ Brands, where she served as Chief Human Resource Officer; Novartis, AG, where she was the
division head of Human Resources for Novartis Vaccines and Diagnostics, Novartis Consumer Health and Novartis
Institutes of BioMedical Research from 2005 to 2012; and Novo Nordisk, where she served as Senior Vice
President, Corporate People & Organization at the company’s headquarters in Copenhagen, Denmark. Earlier in her
career, she held a variety of human resources generalist and specialist positions at Bristol-Myers Squibb and
served as a consultant with Booz Allen & Hamilton in the area of organization change and effectiveness.
Education

University of Massachusetts B.A., in Psychology
The George Washington University, Ph.D. Psychology

Chirfi Guindo
Experience
Mr. Guindo has served as our Executive Vice President and Head of Global Marketing, Market Access and
Customer Innovation since November 2017. Prior to joining Biogen, Mr. Guindo spent 27 years in the global
pharmaceutical industry and has held several leadership positions at Merck in Canada, the U.S., France, Africa and
the Netherlands.  He worked in several disciplines including Finance, Sales & Marketing, General Management and
Global Strategy/Product Development in specialty, acute and hospital care. Most recently Mr. Guindo was Vice
President and Managing Director and President and Managing Director of Merck Canada from October 2014 to
November 2017. From January 2011 to October 2014, he was Vice President and General Manager, Global HIV
Franchise at Merck & Co.
Education

Ecole Central de Paris (France), Engineering
Stern School of Business, New York University, M.B.A. in Finance/Economics

31

Paul McKenzie, Ph.D.
Experience
Dr. McKenzie has served as our Executive Vice President, Pharmaceutical Operations and Technology since July
2016. Prior to that, from February 2016 to June 2016, he served as our Senior Vice President for Global Biologics
Manufacturing & Technical Operations. Prior to joining Biogen, since 2008, Dr. McKenzie held a number of positions
of increasing responsibility at Johnson & Johnson (J&J), including Vice President of R&D for J&J’s Ethicon business
where he led the manufacturing and technical operations team responsible for internal and external manufacturing
of Janssen’s pharmaceutical portfolio. He also ran global Development for Janssen R&D, helping to manage
pipeline activities from discovery through clinical development and commercialization. Prior to J&J, Dr. McKenzie
also held various R&D and manufacturing positions at Bristol-Myers Squibb and Merck & Co.
Education

University of Pennsylvania, B.S. Chemical Engineering
Carnegie Mellon University, Ph.D. Chemical Engineering

Alfred W. Sandrock, Jr., M.D., Ph.D.
Experience
Dr. Sandrock has served as our Executive Vice President and Chief Medical Officer since October 2017. Prior to
that, Dr. Sandrock served as our Executive Vice President, Chief Medical Officer Neurology and Neurodegeneration
from October 2015 to October 2017, as our Chief Medical Officer and Group Senior Vice President from April 2013
to October 2015 and as our Chief Medical Officer and Senior Vice President of Development Sciences from
February 2012 to April 2013. Prior to that, Dr. Sandrock held several senior executive positions since joining us in
1998, including Senior Vice President of Neurology Research and Development and Vice President of Clinical
Development, Neurology.
Public Company Boards

Board of Directors of Neurocrine Biosciences, Inc., a life sciences company

Education

Stanford University, B.A. in Human Biology
Harvard Medical School, M.D.
Harvard University, Ph.D. in Neurobiology
Massachusetts General Hospital, internship in Medicine, residency and chief residency in Neurology, and
clinical fellowship in Neuromuscular Disease and Clinical Neurophysiology (electromyography)

Available Information

Our principal executive offices are located at 225 Binney Street, Cambridge, MA 02142 and our telephone 
number is (617) 679-2000. Our website address is www.biogen.com. We make available free of charge through the 
Investors section of our website our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports 
on Form 8-K and all amendments to those reports as soon as reasonably practicable after such material is 
electronically filed with or furnished to the Securities and Exchange Commission (SEC). We include our website 
address in this report only as an inactive textual reference and do not intend it to be an active link to our website. 
The contents of our website are not incorporated into this report.

32

Item  1A.  

Risk Factors

We are substantially dependent on revenues from our principal products. 

Our current revenues depend upon continued sales of our principal products, and, unless we develop or acquire 
rights to new products and technologies, we will be substantially dependent on sales from our principal products for 
many years. Further, following the completion of the spin-off of our hemophilia business, our revenues are further 
reliant and concentrated on sales of our MS products in an increasingly competitive market, and revenues from 
sales of our product for SMA. Any of the following negative developments relating to any of our principal products 
may adversely affect our revenues and results of operations or could cause a decline in our stock price: 

•  safety or efficacy issues; 

• 

the introduction or greater acceptance of competing products, including lower-priced competing products; 

•  constraints and additional pressures on product pricing or price increases, including those resulting from 
governmental or regulatory requirements, increased competition or changes in, or implementation of, 
reimbursement policies and practices of payors and other third parties; or 

•  adverse legal, administrative, regulatory or legislative developments.

SPINRAZA has been approved by, among others, the FDA, the EC and the Japanese Ministry of Health, Labor 

and Welfare, and is in the early stages of commercial launch in these and other markets. In addition to risks 
associated with new product launches and the other factors described in these “Risk Factors,” our ability to 
successfully commercialize SPINRAZA may be adversely affected due to:

•  our limited marketing experience within the SMA market, which may impact our ability to develop relationships 

with the associated medical and scientific community; 

• 

the lack of readiness of healthcare providers to treat patients with SMA;

• 

the effectiveness of our commercial strategy for marketing SPINRAZA; and

•  our ability to maintain a positive reputation among patients, healthcare providers and others in the SMA 
community, which may be impacted by pricing and reimbursement decisions relating to SPINRAZA. 

If we fail to compete effectively, our business and market position would suffer.

The biopharmaceutical industry and the markets in which we operate are intensely competitive. We compete in 
the marketing and sale of our products, the development of new products and processes, the acquisition of rights to 
new products with commercial potential and the hiring and retention of personnel. We compete with biotechnology 
and pharmaceutical companies that have a greater number of products on the market and in the product pipeline, 
greater financial and other resources and other technological or competitive advantages. One or more of our 
competitors may benefit from significantly greater sales and marketing capabilities, may develop products that are 
accepted more widely than ours or may receive patent protection that dominates, blocks or adversely affects our 
product development or business.

Our products are also susceptible to increasing competition from generics and biosimilars in many 

markets. Generic versions of drugs and biosimilars are likely to be sold at substantially lower prices than branded 
products. Accordingly, the introduction of generic or biosimilar versions of our marketed products, as well as lower-
priced competing products, likely would significantly reduce both the price that we receive for such marketed 
products and the volume of products that we sell, which may have an adverse impact on our results of operations.

In the MS market, we face intense competition as the number of products and competitors continues to 
expand. Due to our significant reliance on sales of our MS products, our business may be harmed if we are unable 
to successfully compete in the MS market. More specifically, our ability to compete, maintain and grow our share in 
the MS market may be adversely affected due to a number of factors, including:

• 

• 

the introduction of more efficacious, safer, less expensive or more convenient alternatives to our MS products, 
including our own products and products of our collaborators; 

the introduction of lower-cost biosimilars, follow-on products or generic versions of branded MS products sold 
by our competitors, and the possibility of future competition from generic versions or prodrugs of existing 
therapeutics or from off-label use by physicians of therapies indicated for other conditions to treat MS patients; 

33

•  patient dynamics, including the size of the patient population and our ability to attract new patients to our 

therapies; 

•  damage to physician and patient confidence in any of our MS products or to our sales and reputation as a 
result of label changes or adverse experiences or events that may occur with patients treated with our MS 
products; 

• 

inability to obtain appropriate pricing and reimbursement for our MS products compared to our competitors in 
key international markets; or 

•  our ability to obtain and maintain patent, data or market exclusivity for our MS products.

Sales of our products depend, to a significant extent, on adequate coverage, pricing and reimbursement from third-
party payors, which are subject to increasing and intense pressure from political, social, competitive and other sources. 
Our inability to maintain adequate coverage, or a reduction in pricing or reimbursement, could have an adverse effect 
on our business, revenues and results of operations and could cause a decline in our stock price.

Sales of our products are dependent, in large part, on the availability and extent of coverage, pricing and 
reimbursement from government health administration authorities, private health insurers and other organizations. 
When a new pharmaceutical product is approved, the availability of government and private reimbursement for that 
product may be uncertain, as is the pricing and amount for which that product will be reimbursed. 

Pricing and reimbursement for our products may be adversely affected by a number of factors, including: 

•  changes in, and implementation of, federal, state or foreign government regulations or private third-party 

payors’ reimbursement policies; 

•  pressure by employers on private health insurance plans to reduce costs;

•  consolidation and increasing assertiveness of payors, including managed care organizations, health insurers, 
pharmacy benefit managers, government health administration authorities, private health insurers and other 
organizations, seeking price discounts or rebates in connection with the placement of our products on their 
formularies and, in some cases, the imposition of restrictions on access or coverage of particular drugs or 
pricing determined based on perceived value; and

•  our value-based contracting pilot program pursuant to which we aim to tie the pricing of our products to their 
clinical values by either aligning price to patient outcomes or adjusting price for patients who discontinue 
therapy for any reason, including efficacy or tolerability concerns.

Our ability to set the price for our products varies significantly from country to country and as a result so can 

the price of our products. Certain countries set prices by reference to the prices in other countries where our 
products are marketed. Thus, our inability to secure favorable prices in a particular country may not only limit the 
revenues from our products within that country, but may also adversely affect our ability to obtain acceptable prices 
in other markets. This may create the opportunity for third-party cross-border trade or influence our decision to sell 
or not to sell a product, thus adversely affecting our geographic expansion plans and revenues.

Our failure to maintain adequate coverage, pricing or reimbursement for our products would have an adverse 
effect on our business, revenues and results of operations, could curtail or eliminate our ability to adequately fund 
research and development programs for the discovery and commercialization of new products and could cause a 
decline in our stock price.

Drug prices are under significant scrutiny in the markets in which our products are prescribed. We expect drug 
pricing and other health care costs to continue to be subject to intense political and societal pressures on a global 
basis. In addition, competition from current and future competitors may negatively impact our ability to maintain 
pricing and our market share. New products or treatments brought to market by our competitors could cause 
revenues for our products to decrease due to potential price reductions and lower sales volumes. As a result, our 
business and reputation may be harmed, our stock price may be adversely impacted and experience periods of 
volatility, and our results of operations may be adversely impacted.  

34

Adverse safety events or restrictions on use and safety warnings for our products can negatively affect our business, 

product sales and stock price.

Adverse safety events involving our marketed products may have a negative impact on our business. Discovery 

of safety issues with our products could create product liability and could cause additional regulatory scrutiny and 
requirements for additional labeling or safety monitoring, withdrawal of products from the market and the imposition 
of fines or criminal penalties. Adverse safety events may also damage physician, patient and/or investor confidence 
in our products and our reputation. Any of these could result in liabilities, loss of revenues, material write-offs of 
inventory, material impairments of intangible assets, goodwill and fixed assets, material restructuring charges and 
other adverse impacts on our results of operations. 

Regulatory authorities are making greater amounts of stand-alone safety information directly available to the 
public through periodic safety update reports, patient registries and other reporting requirements. The reporting of 
adverse safety events involving our products or products similar to ours and public rumors about such events may 
increase claims against us and may also cause our product sales or stock price to decline or experience periods of 
volatility. 

Restrictions on use or significant safety warnings that may be required to be included in the label of our 
products, such as the risk of developing progressive multifocal leukoencephalopathy, a serious brain infection, or 
liver injury in the label for certain of our products, may significantly reduce expected revenues for those products and 
require significant expense and management time. 

If we are unable to obtain and maintain adequate protection for our data, intellectual property and other proprietary 

rights, our business may be harmed. 

Our success depends in part on our ability to obtain and defend patent and other intellectual property rights 
that are important to the commercialization of our products and product candidates. The degree of patent protection 
that will be afforded to our products and processes in the U.S. and in other important markets remains uncertain 
and is dependent upon the scope of protection decided upon by the patent offices, courts, administrative bodies and 
lawmakers in these countries. We can provide no assurance that we will successfully obtain or preserve patent 
protection for the technologies incorporated into our products and processes, or that the protection obtained will be 
of sufficient breadth and degree to protect our commercial interests in all countries where we conduct business. If 
we cannot prevent others from exploiting our inventions, we will not derive the benefit from them that we currently 
expect. Furthermore, we can provide no assurance that our products will not infringe patents or other intellectual 
property rights held by third parties.

We also rely on regulatory exclusivity for protection of our products. Implementation and enforcement of 

regulatory exclusivity, which may consist of regulatory data protection and market protection, varies widely from 
country to country. Failure to qualify for regulatory exclusivity, or failure to obtain or maintain the extent or duration of 
such protections that we expect in each of the markets for our products due to challenges, changes or 
interpretations in the law or otherwise, could affect our revenues for our products or our decision on whether to 
market our products in a particular country or countries or could otherwise have an adverse impact on our results of 
operations.

Litigation, interferences, oppositions, inter partes reviews, administrative challenges or other similar types of 

proceedings are, have been and may in the future be necessary in some instances to determine the validity and 
scope of certain of our proprietary rights, and in other instances to determine the validity, scope or non-infringement 
of certain patent rights claimed by third parties to be pertinent to the manufacture, use or sale of our products. We 
may also face challenges to our patent and regulatory protections covering our products by third parties, including 
manufacturers of generics and biosimilars that may choose to launch or attempt to launch their products before the 
expiration of our patent or regulatory exclusivity. Litigation, interference, oppositions, inter partes reviews, 
administrative challenges or other similar types of proceedings are unpredictable and may be protracted, expensive 
and distracting to management. The outcome of such proceedings could adversely affect the validity and scope of 
our patent or other proprietary rights, hinder our ability to manufacture and market our products, require us to seek a 
license for the infringed product or technology or result in the assessment of significant monetary damages against 
us that may exceed amounts, if any, accrued in our financial statements. An adverse determination in a judicial or 
administrative proceeding or a failure to obtain necessary licenses could prevent us from manufacturing or selling 
our products. Furthermore, payments under any licenses that we are able to obtain would reduce our profits derived 
from the covered products and services.

35

Our long-term success depends upon the successful development of new products and additional indications for 

existing products. 

Our long-term viability and growth will depend upon successful development of additional indications for our 

existing products as well as successful development of new products and technologies from our research and 
development activities, our biosimilars joint venture with Samsung Biologics or licenses or acquisitions from third 
parties. 

Product development is very expensive and involves a high degree of risk. Only a small number of research and 

development programs result in the commercialization of a product. Clinical trials may indicate that our product 
candidates lack efficacy, have harmful side effects, result in unexpected adverse events or raise other concerns that 
may significantly reduce the likelihood of regulatory approval. This may result in terminated programs, significant 
restrictions on use and safety warnings in an approved label, adverse placement within the treatment paradigm or 
significant reduction in the commercial potential of the product candidate.

Successful preclinical work or early stage clinical trials does not ensure success in later stage trials, regulatory 

approval or commercial viability of a product.

Positive results in a trial may not be replicated in subsequent or confirmatory trials. Additionally, success in 

preclinical work or early stage clinical trials does not ensure that later stage or larger scale clinical trials will be 
successful or that regulatory approval will be obtained. In addition, even if later stage clinical trials are successful, 
regulatory authorities may delay or decline approval of our product candidates. Regulatory authorities may disagree 
with our view of the data, require additional studies or disagree with our trial design or endpoints. Regulatory 
authorities may also fail to approve the facilities or the processes used to manufacture a product candidate, our 
dosing or delivery methods or companion devices. Regulatory authorities may grant marketing approval that is more 
restricted than anticipated. These restrictions may include limiting indications to narrow patient populations and the 
imposition of safety monitoring, educational requirements and risk evaluation and mitigation strategies. The 
occurrence of any of these events could result in significant costs and expenses, have an adverse effect on our 
business, financial condition and results of operations and cause our stock price to decline or experience periods of 
volatility.

Even if we are able to successfully develop new products or indications, sales of new products or products with 

additional indications may not meet investor expectations. We may also make a strategic decision to discontinue 
development of a product or indication if, for example, we believe commercialization will be difficult relative to the 
standard of care or other opportunities in our pipeline.

Clinical trials and the development of biopharmaceutical products is a lengthy and complex process. If we fail to 
adequately manage our clinical activities, our clinical trials or potential regulatory approvals may be delayed or denied. 

Conducting clinical trials is a complex, time-consuming and expensive process. Our ability to complete clinical 

trials in a timely fashion depends in large part on a number of key factors. These factors include protocol design, 
regulatory and institutional review board approval, patient enrollment rates and compliance with cGCP. If we or our 
third-party clinical trial providers or third-party CROs do not successfully carry out these clinical activities, our clinical 
trials or the potential regulatory approval of a product candidate may be delayed or be unsuccessful.

We have opened clinical sites and are enrolling patients in a number of countries where our experience is 
limited. In most cases, we use the services of third parties to carry out our clinical trial related activities and rely on 
such parties to accurately report their results. Our reliance on third parties for these activities may impact our ability 
to control the timing, conduct, expense and quality of our clinical trials. One CRO has responsibility for a substantial 
portion of our clinical trial related activities and reporting. If this CRO does not adequately perform, many of our trials 
may be affected. We may need to replace our CROs. Although we believe there are a number of other CROs we could 
engage to continue these activities, the replacement of an existing CRO may result in the delay of the affected trials 
or otherwise adversely affect our efforts to obtain regulatory approvals and commercialize our product candidates.

Our results of operations may be adversely affected by current and potential future healthcare reforms.

In the U.S., federal and state legislatures, health agencies and third-party payors continue to focus on 

containing the cost of health care. Legislative and regulatory proposals, enactments to reform health care insurance 
programs and increasing pressure from social sources could significantly influence the manner in which our products 
are prescribed and purchased. For example, provisions of the PPACA have resulted in changes in the way health care 
is paid for by both governmental and private insurers, including increased rebates owed by manufacturers under the 
Medicaid Drug Rebate Program, annual fees and taxes on manufacturers of certain branded prescription drugs, the 
requirement that manufacturers participate in a discount program for certain outpatient drugs under Medicare Part D 
36

and the expansion of the number of hospitals eligible for discounts under Section 340B of the PHSA. These changes 
have had and are expected to continue to have a significant impact on our business. 

We may face uncertainties as a result of federal and administrative efforts to repeal, substantially modify or 

invalidate some or all of the provisions of the PPACA. There is no assurance that the PPACA, as currently enacted or 
as amended in the future, will not adversely affect our business and financial results, and we cannot predict how 
future federal or state legislative or administrative changes relating to healthcare reform will affect our business.

The administration has also indicated an intent to address prescription drug pricing and recent Congressional 

hearings have brought increased public attention to the costs of prescription drugs. These actions and the 
uncertainty about the future of the PPACA and healthcare laws may put downward pressure on pharmaceutical 
pricing and increase our regulatory burdens and operating costs.

There is also significant economic pressure on state budgets that results in states increasingly seeking to 
achieve budget savings through mechanisms that limit coverage or payment for our drugs. In recent years, some 
states have considered legislation and ballot initiatives that would control the prices of drugs, including laws to allow 
importation of pharmaceutical products from lower cost jurisdictions outside the U.S. and laws intended to impose 
price controls on state drug purchases. State Medicaid programs are increasingly requesting manufacturers to pay 
supplemental rebates and requiring prior authorization by the state program for use of any drug for which 
supplemental rebates are not being paid. Government efforts to reduce Medicaid expenses may lead to increased 
use of managed care organizations by Medicaid programs. This may result in managed care organizations influencing 
prescription decisions for a larger segment of the population and a corresponding constraint on prices and 
reimbursement for our products. 

In the E.U. and some other international markets, the government provides health care at low cost to 

consumers and regulates pharmaceutical prices, patient eligibility or reimbursement levels to control costs for the 
government-sponsored health care system. Many countries have announced or implemented measures to reduce 
health care costs to limit their overall level of government expenditures. These measures vary by country and may 
include, among other things, patient access restrictions, suspensions on price increases, prospective and possibly 
retroactive price reductions and other recoupments and increased mandatory discounts or rebates, recoveries of 
past price increases and greater importation of drugs from lower-cost countries. These measures have negatively 
impacted our revenues, and may continue to adversely affect our revenues and results of operations in the future.

Manufacturing issues could substantially increase our costs, limit supply of our products and/or reduce our 

revenues.

The process of manufacturing our products is complex, highly regulated and subject to numerous risks, 

including:

•  Risk of Product Loss. The manufacturing process for our products is extremely susceptible to product loss due 
to contamination, oxidation, equipment failure or improper installation or operation of equipment or vendor or 
operator error. Even minor deviations from normal manufacturing processes could result in reduced production 
yields, product defects and other supply disruptions. If microbial, viral or other contaminations are discovered in 
our products or manufacturing facilities, we may need to close our manufacturing facilities for an extended 
period of time to investigate and remediate the contaminant. 

•  Risks of Reliance on Third Parties and Single Source Providers. We rely on third-party suppliers and 

manufacturers for many aspects of our manufacturing process for our products and product candidates. In 
some cases, due to the unique manner in which our products are manufactured, we rely on single source 
providers of raw materials and manufacturing supplies. These third parties are independent entities subject to 
their own unique operational and financial risks that are outside of our control. These third parties may not 
perform their obligations in a timely and cost-effective manner or in compliance with applicable regulations, and 
they may be unable or unwilling to increase production capacity commensurate with demand for our existing or 
future products. Finding alternative providers could take a significant amount of time and involve significant 
expense due to the specialized nature of the services and the need to obtain regulatory approval of any 
significant changes to our suppliers or manufacturing methods. We cannot be certain that we could reach 
agreement with alternative providers or that the FDA or other regulatory authorities would approve our use of 
such alternatives. 

37

•  Global Bulk Supply Risks. We rely on our principal manufacturing facilities for the production of drug substance 
for our large molecule products and product candidates. Our global bulk supply of these products and product 
candidates depends on the uninterrupted and efficient operation of these facilities, which could be adversely 
affected by equipment failures, labor shortages, natural disasters, power failures and numerous other factors.

•  Risks Relating to Compliance with cGMP. We and our third-party providers are generally required to maintain 
compliance with cGMP and other stringent requirements and are subject to inspections by the FDA and 
comparable agencies in other jurisdictions to confirm such compliance. Any delay, interruption or other issues 
that arise in the manufacture, fill-finish, packaging or storage of our products as a result of a failure of our 
facilities or the facilities or operations of third parties to pass any regulatory agency inspection could 
significantly impair our ability to develop and commercialize our products. Significant noncompliance could also 
result in the imposition of monetary penalties or other civil or criminal sanctions and damage our reputation.

Any adverse developments affecting our manufacturing operations or the operations of our third-party suppliers 
and manufacturers may result in shipment delays, inventory shortages, lot failures, product withdrawals or recalls or 
other interruptions in the commercial supply of our products. We may also have to take inventory write-offs and incur 
other charges and expenses for products that fail to meet specifications, undertake costly remediation efforts or 
seek more costly manufacturing alternatives. Such developments could increase our manufacturing costs, cause us 
to lose revenues or market share as patients and physicians turn to competing therapeutics, diminish our 
profitability or damage our reputation. 

A breakdown or breach of our technology systems could subject us to liability or interrupt the operation of our 

business.

We are increasingly dependent upon technology systems and data. Our computer systems continue to increase 

in multitude and complexity due to the growth in our business, making them potentially vulnerable to breakdown, 
malicious intrusion and random attack. Likewise, data privacy or security breaches by individuals authorized to 
access our technology systems or others may pose a risk that sensitive data, including intellectual property, trade 
secrets or personal information belonging to us, our patients, customers or other business partners, may be 
exposed to unauthorized persons or to the public. Cyber-attacks are increasing in their frequency, sophistication and 
intensity, and are becoming increasingly difficult to detect. They are often carried out by motivated, well-resourced, 
skilled and persistent actors including nation states, organized crime groups, “hacktivists” and employees or 
contractors acting with malicious intent. Cyber-attacks could include the deployment of harmful malware and key 
loggers, ransomware, a denial-of-service attack, a malicious website, the use of social engineering and other means 
to affect the confidentiality, integrity and availability of our technology systems and data. Our key business partners 
face similar risks and any security breach of their systems could adversely affect our security posture. While we 
continue to build and improve our systems and infrastructure and believe we have taken appropriate security 
measures to reduce these risks to our data and information technology systems, there can be no assurance that our 
efforts will prevent breakdowns or breaches in our systems that could adversely affect our business and operations 
and/or result in the loss of critical or sensitive information, which could result in financial, legal, business or 
reputational harm to us. In addition, our liability insurance may not be sufficient in type or amount to cover us 
against claims related to security breaches, cyber-attacks and other related breaches.

We depend on relationships with collaborators and other third parties for revenues, and for the development, 
regulatory approval, commercialization and marketing of certain of our products and product candidates, which are 
outside of our full control.

We rely on a number of significant collaborative and other third-party relationships for revenues, and for the 

development, regulatory approval, commercialization and marketing of certain of our products and product 
candidates. We also outsource to third parties certain aspects of our regulatory affairs and clinical development 
relating to our products and product candidates. Reliance on collaborative and other third-party relationships 
subjects us to a number of risks, including:

•  we may be unable to control the resources our collaborators or third parties devote to our programs or 

products;

•  disputes may arise under the agreement, including with respect to the achievement and payment of milestones 

or ownership of rights to technology developed with our collaborators or other third parties, and the underlying 
contract with our collaborators or other third parties may fail to provide significant protection or may fail to be 
effectively enforced if the collaborators or third parties fail to perform; 

38

• 

• 

the interests of our collaborators or third parties may not always be aligned with our interests, and such parties 
may not pursue regulatory approvals or market a product in the same manner or to the same extent that we 
would, which could adversely affect our revenues; 

third-party relationships and collaborations often require the parties to cooperate, and failure to do so 
effectively could adversely affect product sales, or the clinical development or regulatory approvals of products 
under joint control or could result in termination of the research, development or commercialization of product 
candidates or result in litigation or arbitration; and

•  any failure on the part of our collaborators or other third parties to comply with applicable laws and regulatory 

requirements in the marketing, sale and maintenance of the marketing authorization of our products or to fulfill 
any responsibilities our collaborators or other third parties may have to protect and enforce any intellectual 
property rights underlying our products could have an adverse effect on our revenues as well as involve us in 
possible legal proceedings.

Given these risks, there is considerable uncertainty regarding the success of our current and future 

collaborative efforts. If these efforts fail, our product development or commercialization of new products could be 
delayed or revenues from products could decline.

Our business may be adversely affected if we do not successfully execute our growth initiatives.

We anticipate growth through internal development projects, commercial initiatives and external opportunities, 
which may include the acquisition, partnering and in-licensing of products, technologies and companies or the entry 
into strategic alliances and collaborations. While we believe we have a number of promising programs in our pipeline, 
failure of internal development projects to advance or difficulties in executing on our commercial initiatives could 
impact our current and future growth, resulting in additional reliance on external development opportunities for 
growth. The availability of high quality, cost-effective development opportunities is limited and competitive, and we 
are not certain that we will be able to identify candidates that we and our shareholders consider suitable or 
complete transactions on terms that are acceptable to us and our shareholders. We may fail to complete 
transactions for other reasons, including if we are unable to obtain desired financing on favorable terms, if at all. 
Even if we are able to successfully identify and complete acquisitions and other strategic alliances and 
collaborations, we may face unanticipated costs or liabilities in connection with the transaction or we may not be 
able to integrate them or take full advantage of them or otherwise realize the benefits that we expect.

Supporting our growth initiatives and the further development of our existing products and potential new 

products in our pipeline will require significant capital expenditures and management resources, including 
investments in research and development, sales and marketing, manufacturing capabilities and other areas of our 
business. If we do not successfully execute our growth initiatives, then our business and financial results may be 
adversely affected and we may incur asset impairment or restructuring charges.

Management and key personnel changes may disrupt our operations, and we may have difficulty retaining key 

personnel or attracting and retaining qualified replacements on a timely basis for management and other key 
personnel who may leave the Company.

We have experienced changes in management and other key personnel in critical functions across our 
organization, including our chief executive officer and our chief financial officer. Changes in management and other 
key personnel have the potential to disrupt our business, and any such disruption could adversely affect our 
operations, programs, growth, financial condition and results of operations. Further, new members of management 
may have different perspectives on programs and opportunities for our business, which may cause us to focus on 
new business opportunities or reduce or change emphasis on our existing business programs.

Our success is dependent upon our ability to attract and retain qualified management and key personnel in a 

highly competitive environment. Qualified individuals are in high demand, and we may incur significant costs to 
attract them, particularly at the executive level. We may face difficulty in attracting and retaining key talent for a 
number of reasons, such as management changes, the underperformance or discontinuation of one or more late 
stage programs or recruitment by competitors. We cannot assure you that we will be able to hire or retain the 
personnel necessary for our operations or that the loss of any such personnel will not have a material impact on our 
financial condition and results of operations.

39

We are pursuing opportunities to expand our manufacturing capacity for future clinical and commercial 

requirements for product candidates, which will result in the incurrence of significant investment with no assurance 
that such investment will be recouped.

While we believe we currently have sufficient large scale manufacturing capacity to meet our near-term 
manufacturing requirements, it is probable that we would need additional large scale manufacturing capacity to 
support future clinical and commercial manufacturing requirements for product candidates in our pipeline, if such 
candidates are successful and approved. We are building a large-scale biologics manufacturing facility in Solothurn, 
Switzerland. Due to the long lead times necessary for the expansion of manufacturing capacity, we expect to make 
significant investments to build or obtain third-party contract manufacturers with no assurance that such investment 
will be recouped. If we are unable to adequately and timely manufacture and supply our products and product 
candidates or if we do not fully utilize our manufacturing facilities, our business may be harmed.

If we fail to comply with the extensive legal and regulatory requirements affecting the health care industry, we could 

face increased costs, penalties and a loss of business.

Our activities, and the activities of our collaborators, distributors and other third-party providers, are subject to 
extensive government regulation and oversight both in the U.S. and in foreign jurisdictions. The FDA and comparable 
agencies in other jurisdictions directly regulate many of our most critical business activities, including the conduct of 
preclinical and clinical studies, product manufacturing, advertising and promotion, product distribution, adverse event 
reporting and product risk management. Our interactions in the U.S. or abroad with physicians and other health care 
providers that prescribe or purchase our products are also subject to government regulation designed to prevent 
fraud and abuse in the sale and use of the products and place significant restrictions on the marketing practices of 
health care companies. Health care companies such as ours are facing heightened scrutiny of their relationships 
with health care providers from anti-corruption enforcement officials. In addition, health care companies such as 
ours have been the target of lawsuits and investigations alleging violations of government regulation, including 
claims asserting submission of incorrect pricing information, impermissible off-label promotion of pharmaceutical 
products, payments intended to influence the referral of health care business, submission of false claims for 
government reimbursement, antitrust violations or violations related to environmental matters. There is also 
enhanced scrutiny of company-sponsored patient assistance programs, including insurance premium and co-pay 
assistance programs and donations to third party charities that provide such assistance. If we, or our vendors or 
donation recipients, are deemed to fail to comply with relevant laws, regulations or government guidance in the 
operation of these programs, we could be subject to significant fines or penalties. Risks relating to compliance with 
laws and regulations may be heightened as we continue to expand our global operations and enter new therapeutic 
areas with different patient populations, which may have different product distribution methods, marketing programs 
or patient assistance programs from those we currently utilize or support. 

Regulations governing the health care industry are subject to change, with possibly retroactive effect, including:

•  new laws, regulations or judicial decisions, or new interpretations of existing laws, regulations or judicial 

decisions, related to health care availability, pricing or marketing practices, compliance with wage and hour laws 
and other employment practices, method of delivery, payment for health care products and services, compliance 
with health information and data privacy and security laws and regulations, tracking and reporting payments and 
other transfers of value made to physicians and teaching hospitals, extensive anti-bribery and anti-corruption 
prohibitions, product serialization and labeling requirements and used product take-back requirements; 

•  changes in the FDA and foreign regulatory approval processes that may delay or prevent the approval of new 

products and result in lost market opportunity; 

• 

• 

the hiring freeze implemented by the federal government in 2017, including at the FDA, could impact the review 
and potential approval of new products, which may adversely affect our business and financial condition;

requirements that provide for increased transparency of clinical trial results and quality data, such as the EMA’s 
clinical transparency policy, which could impact our ability to protect trade secrets and competitively-sensitive 
information contained in approval applications or could be misinterpreted leading to reputational damage, 
misperception or legal action which could harm our business; and

•  changes in FDA and foreign regulations that may require additional safety monitoring, labeling changes, 

restrictions on product distribution or use, or other measures after the introduction of our products to market, 
which could increase our costs of doing business, adversely affect the future permitted uses of approved 
products or otherwise adversely affect the market for our products.

40

Violations of governmental regulation may be punishable by criminal and civil sanctions against us, including 

fines and civil monetary penalties and exclusion from participation in government programs, including Medicare and 
Medicaid, as well as against executives overseeing our business. In addition to penalties for violation of laws and 
regulations, we could be required to repay amounts we received from government payors, or pay additional rebates 
and interest if we are found to have miscalculated the pricing information we have submitted to the government. We 
cannot ensure you that our compliance controls, policies and procedures will in every instance protect us from acts 
committed by our employees, collaborators, partners or third-party providers that would violate the laws or 
regulations of the jurisdictions in which we operate. Whether or not we have complied with the law, an investigation 
into alleged unlawful conduct could increase our expenses, damage our reputation, divert management time and 
attention and/or adversely affect our business.

Our effective tax rate fluctuates, and we may incur obligations in tax jurisdictions in excess of accrued amounts.

As a global biopharmaceutical company, we are subject to taxation in numerous countries, states and other 

jurisdictions.  As a result, our effective tax rate is derived from a combination of applicable tax rates in the various 
places that we operate. In preparing our financial statements, we estimate the amount of tax that will become 
payable in each of such places. Our effective tax rate, however, may be different than experienced in the past due to 
numerous factors, including changes in the mix of our profitability from country to country, the results of 
examinations and audits of our tax filings, adjustments to the value of our uncertain tax positions, changes in 
accounting for income taxes and changes in tax laws, including the 2017 Tax Act. Any of these factors could cause 
us to experience an effective tax rate significantly different from previous periods or our current expectations.

In addition, our inability to secure or sustain acceptable arrangements with tax authorities and future changes 

in the tax laws, among other things, may result in tax obligations in excess of amounts accrued in our financial 
statements.

The 2017 Tax Act has resulted in significant changes to the U.S. corporate income tax system. These changes 

include a federal statutory rate reduction from 35% to 21%, the elimination or reduction of certain domestic 
deductions and credits and limitations on the deductibility of interest expense and executive compensation. The 
2017 Tax Act also transitions international taxation from a worldwide system to a modified territorial system and 
includes base erosion prevention measures on non-U.S. earnings, which has the effect of subjecting certain earnings 
of our foreign subsidiaries to U.S. taxation as GILTI. These changes are effective beginning in 2018.

The 2017 Tax Act also includes the Transition Toll Tax, which is a one-time mandatory deemed repatriation tax 
on accumulated foreign subsidiaries' previously untaxed foreign earnings. The Transition Toll Tax will be paid over an 
eight-year period, starting in 2018, and will not accrue interest. 

Our preliminary estimate of the Transition Toll Tax and the remeasurement of our deferred tax assets and 
liabilities is subject to the finalization of management's analysis related to certain matters, such as developing 
interpretations of the provisions of the 2017 Tax Act, changes to certain estimates and amounts related to the 
earnings and profits of certain subsidiaries and the filing of our tax returns. U.S. Treasury regulations, administrative 
interpretations or court decisions interpreting the 2017 Tax Act may require further adjustments and changes in our 
estimates, which could have a material adverse effect on our business, results of operations or financial conditions. 
The final determination of the Transition Toll Tax and the remeasurement of our deferred tax assets and liabilities will 
be completed as additional information becomes available, but no later than one year from the enactment of the 
2017 Tax Act.

In addition, the adoption of some or all of the recommendations set forth in the Organization for Economic Co-

operation and Development’s project on “Base Erosion and Profit Shifting” (BEPS) by tax authorities in the countries 
in which we operate, could negatively impact our effective tax rate. These recommendations focus on payments from 
affiliates in high tax jurisdictions to affiliates in lower tax jurisdictions and the activities that give rise to a taxable 
presence in a particular country.

Our sales and operations are subject to the risks of doing business internationally.

We are increasing our presence in international markets, particularly emerging markets, subjecting us to many 

risks that could adversely affect our business and revenues, such as:

• 

the inability to obtain necessary foreign regulatory or pricing approvals of products in a timely manner; 

•  uncertainties regarding the collectability of accounts receivable; 

• 

fluctuations in foreign currency exchange rates that may adversely impact our revenues and net income; 
41

•  difficulties in staffing and managing international operations; 

• 

the imposition of governmental controls; 

• 

less favorable intellectual property or other applicable laws; 

• 

• 

increasingly complex standards for complying with foreign laws and regulations that may differ substantially 
from country to country and may conflict with corresponding U.S. laws and regulations; 

the far-reaching anti-bribery and anti-corruption legislation in the U.K., including the Bribery Act, and elsewhere 
and escalation of investigations and prosecutions pursuant to such laws; 

• 

the effects of the implementation of the U.K.’s decision to voluntarily depart from the E.U., known as Brexit;

•  compliance with complex import and export control laws;

• 

restrictions on direct investments by foreign entities and trade restrictions; 

•  greater political or economic instability; and 

•  changes in tax laws and tariffs.

In addition, our international operations are subject to regulation under U.S. law. For example, the FCPA 
prohibits U.S. companies and their representatives from paying, offering to pay, promising to pay or authorizing the 
payment of anything of value to any foreign government official, government staff member, political party or political 
candidate for the purpose of obtaining or retaining business or to otherwise obtain favorable treatment or influence a 
person working in an official capacity. In many countries, the health care professionals we regularly interact with may 
meet the FCPA's definition of a foreign government official. Failure to comply with domestic or foreign laws could 
result in various adverse consequences, including: possible delay in approval or refusal to approve a product; recalls, 
seizures or withdrawal of an approved product from the market; disruption in the supply or availability of our products 
or suspension of export or import privileges; the imposition of civil or criminal sanctions; the prosecution of 
executives overseeing our international operations; and damage to our reputation. Any significant impairment of our 
ability to sell products outside of the U.S. could adversely impact our business and financial results.

Our operating results are subject to significant fluctuations.

Our quarterly revenues, expenses and net income (loss) have fluctuated in the past and are likely to fluctuate 

significantly in the future due to the risks described in these “Risk Factors” as well as the timing of charges and 
expenses that we may take. We have recorded, or may be required to record, charges that include:

• 

the cost of restructurings or other initiatives to streamline our operations and reallocate resources; 

• 

• 

impairments with respect to investments, fixed assets and long-lived assets, including in-process R&D and 
other intangible assets; 

inventory write-downs for failed quality specifications, charges for excess or obsolete inventory and charges for 
inventory write downs relating to product suspensions, expirations or recalls; 

•  changes in the fair value of contingent consideration;

•  bad debt expenses and increased bad debt reserves; 

•  outcomes of litigation and other legal or administrative proceedings, regulatory matters and tax matters;

•  milestone payments under license and collaboration agreements; and 

•  payments in connection with acquisitions and other business development activities.

42

Our revenues are also subject to foreign currency exchange rate fluctuations due to the global nature of our 

operations. Although we have foreign currency forward contracts to hedge specific forecasted transactions 
denominated in foreign currencies, our efforts to mitigate the impact of fluctuating currency exchange rates may not 
be successful. As a result, currency fluctuations among our reporting currency, the U.S. dollar, and the other 
currencies in which we do business will affect our operating results, often in unpredictable ways. Our net income may 
also fluctuate due to the impact of charges we may be required to take with respect to foreign currency hedge 
transactions. In particular, we may incur higher than expected charges from hedge ineffectiveness or from the 
termination of a hedge relationship.

Our operating results during any one period do not necessarily suggest the anticipated results of future periods.

Our investment in Samsung Bioepis, and our success in commercializing biosimilars developed by Samsung Bioepis, 

is subject to risks and uncertainties inherent in the development, manufacture and commercialization of biosimilars.

Our investment in Samsung Bioepis, and our success in commercializing biosimilars developed by Samsung 

Bioepis, is subject to a number of risks, including:

•  Reliance on Third Parties. We are dependent on the efforts of Samsung Bioepis and other third parties over 

whom we have limited or no control in the development and manufacturing of biosimilars products. If Samsung 
Bioepis or such other third parties fail to perform successfully, we may not realize the anticipated benefits of 
our investment in Samsung Bioepis;

•  Regulatory Compliance. Biosimilar products may face regulatory hurdles or delays due to the evolving and 

uncertain regulatory and commercial pathway of biosimilars products in certain jurisdictions; 

• 

Intellectual Property and Regulatory Challenges. Biosimilar products may face extensive patent clearances, 
patent infringement litigation, injunctions or regulatory challenges, which could prevent the commercial launch 
of a product or delay it for many years; 

•  Failure to Gain Market and Patient Acceptance. Market success of biosimilar products will be adversely affected 

if patients, physicians and/or payors do not accept biosimilar products as safe and efficacious products 
offering a more competitive price or other benefit over existing therapies; 

•  Ability to Provide Adequate Supply. Manufacturing biosimilars is complex. If we encounter any manufacturing or 

supply chain difficulties, we may be unable to meet higher than anticipated demand; and

•  Competitive Challenges. Biosimilar products face significant competition, including from innovator products and 
from biosimilar products offered by other companies. In some jurisdictions, local tendering processes may 
restrict biosimilar products from being marketed and sold in those jurisdictions. The number of competitors in a 
jurisdiction, the timing of approval and the ability to market biosimilar products successfully in a timely and 
cost-effective matter are additional factors that may impact our success and/or the success of Samsung 
Bioepis in this business area.

Our investments in properties may not be fully realized.

We own or lease real estate primarily consisting of buildings that contain research laboratories, office space 

and manufacturing operations. For strategic or other operational reasons, we may decide to consolidate or co-locate 
certain aspects of our business operations or dispose of one or more of our properties, some of which may be 
located in markets that are experiencing high vacancy rates and decreasing property values. If we determine that the 
fair value of any of our owned properties is lower than their book value we may not realize the full investment in 
these properties and incur significant impairment charges or additional depreciation when the expected useful lives 
of certain assets have been shortened due to the anticipated closing of facilities. If we decide to fully or partially 
vacate a leased property, we may incur significant cost, including facility closing costs, employee separation and 
retention expenses, lease termination fees, rent expense in excess of sublease income and impairment of leasehold 
improvements and accelerated depreciation of assets. Any of these events may have an adverse impact on our 
results of operations.

43

Our portfolio of marketable securities is subject to market, interest and credit risk that may reduce its value.

We maintain a portfolio of marketable securities for investment of our cash. Changes in the value of our 
portfolio of marketable securities could adversely affect our earnings. In particular, the value of our investments may 
decline due to increases in interest rates, downgrades of the bonds and other securities included in our portfolio, 
instability in the global financial markets that reduces the liquidity of securities included in our portfolio, declines in 
the value of collateral underlying the securities included in our portfolio and other factors. Each of these events may 
cause us to record charges to reduce the carrying value of our investment portfolio or sell investments for less than 
our acquisition cost. Although we attempt to mitigate these risks through diversification of our investments and 
continuous monitoring of our portfolio's overall risk profile, the value of our investments may nevertheless decline.

There can be no assurance that we will continue to repurchase stock or that we will repurchase stock at favorable 

prices.

From time to time our Board of Directors authorizes stock repurchase programs, including most recently a 

program to repurchase up to $5.0 billion of our common stock, which was authorized by our Board of Directors in 
July 2016 (2016 Share Repurchase Program). The amount and timing of stock repurchases are subject to capital 
availability and our determination that stock repurchases are in the best interest of our shareholders and are in 
compliance with all respective laws and our agreements applicable to the repurchase of stock. Our ability to 
repurchase stock will depend upon, among other factors, our cash balances and potential future capital 
requirements for strategic transactions, our results of operations, our financial condition and other factors beyond 
our control that we may deem relevant. A reduction in, or the completion or expiration of, our stock repurchase 
programs could have a negative effect on our stock price. We can provide no assurance that we will repurchase 
stock at favorable prices, if at all.

We may not be able to access the capital and credit markets on terms that are favorable to us.

We may seek access to the capital and credit markets to supplement our existing funds and cash generated 

from operations for working capital, capital expenditure and debt service requirements and other business 
initiatives. The capital and credit markets have experienced extreme volatility and disruption in the past, which leads 
to uncertainty and liquidity issues for both borrowers and investors. In the event of adverse capital and credit market 
conditions, we may be unable to obtain capital or credit market financing on favorable terms. Changes in credit 
ratings issued by nationally recognized credit rating agencies could also adversely affect our cost of financing and 
the market price of our securities.

Our indebtedness could adversely affect our business and limit our ability to plan for or respond to changes in our 

business. 

Our indebtedness, together with our significant contingent liabilities, including milestone and royalty payment 

obligations, could have important consequences to our business; for example, such obligations could: 

• 

increase our vulnerability to general adverse economic and industry conditions;

• 

limit our ability to access capital markets and incur additional debt in the future;

• 

require us to dedicate a substantial portion of our cash flow from operations to payments on our indebtedness, 
thereby reducing the availability of our cash flow for other purposes, including business development efforts, 
research and development and mergers and acquisitions; and

• 

limit our flexibility in planning for, or reacting to, changes in our business and the industry in which we operate, 
thereby placing us at a competitive disadvantage compared to our competitors that have less debt.

Our business involves environmental risks, which include the cost of compliance and the risk of contamination or 

injury.

Our business and the business of several of our strategic partners involve the controlled use of hazardous 

materials, chemicals, biologics and radioactive compounds. Although we believe that our safety procedures for 
handling and disposing of such materials comply with state, federal and foreign standards, there will always be the 
risk of accidental contamination or injury. If we were to become liable for an accident, or if we were to suffer an 
extended facility shutdown, we could incur significant costs, damages and penalties that could harm our business. 
Manufacturing of our products and product candidates also requires permits from government agencies for water 
supply and wastewater discharge. If we do not obtain appropriate permits, including permits for sufficient quantities 
of water and wastewater, we could incur significant costs and limits on our manufacturing volumes that could harm 
our business.

44

The illegal distribution and sale by third parties of counterfeit versions of our products or stolen products could have 

a negative impact on our reputation and business.

Third parties might illegally distribute and sell counterfeit or unfit versions of our products, which do not meet 

our rigorous manufacturing, distribution and testing standards. A patient who receives a counterfeit or unfit drug may 
be at risk for a number of dangerous health consequences. Our reputation and business could suffer harm as a 
result of counterfeit or unfit drugs sold under our brand name. Stolen inventory that is not properly stored or sold 
through unauthorized channels could adversely impact patient safety, our reputation and our business. In addition, 
inventory that is stolen from warehouses, plants or while in-transit, and that is subsequently improperly stored and 
sold through unauthorized channels, could adversely impact patient safety, our reputation and our business.

The increasing use of social media platforms presents new risks and challenges.

Social media is increasingly being used to communicate about our products and the diseases our therapies are 

designed to treat. Social media practices in the biopharmaceutical industry continue to evolve and regulations 
relating to such use are not always clear. This evolution creates uncertainty and risk of noncompliance with 
regulations applicable to our business. For example, patients may use social media channels to comment on the 
effectiveness of a product or to report an alleged adverse event. When such disclosures occur, there is a risk that 
we fail to monitor and comply with applicable adverse event reporting obligations or we may not be able to defend 
the company or the public's legitimate interests in the face of the political and market pressures generated by social 
media due to restrictions on what we may say about our products. There is also a risk of inappropriate disclosure of 
sensitive information or negative or inaccurate posts or comments about us on any social networking website. If any 
of these events were to occur or we otherwise fail to comply with applicable regulations, we could incur liability, face 
overly restrictive regulatory actions or incur other harm to our business.

Some of our collaboration agreements contain change in control provisions that may discourage a third party from 

attempting to acquire us.

Some of our collaboration agreements include change in control provisions that could reduce the potential 
acquisition price an acquirer is willing to pay or discourage a takeover attempt that could be viewed as beneficial to 
shareholders. Upon a change in control, some of these provisions could trigger reduced milestone, profit or royalty 
payments to us or give our collaboration partner rights to terminate our collaboration agreement, acquire operational 
control or force the purchase or sale of the programs that are the subject of the collaboration.  

We may incur operational difficulties or be exposed to claims and liabilities as a result of the spin-off of our 

hemophilia business.

On February 1, 2017, we distributed all of the then outstanding shares of Bioverativ common stock to Biogen 

shareholders in connection with the spin-off of our hemophilia business.  In connection with the distribution, we 
entered into a separation and distribution agreement and various other agreements (including a transition services 
agreement, a tax matters agreement, a manufacturing and supply agreement, an employee matters agreement, an 
intellectual property matters agreement and certain other commercial agreements). These agreements govern the 
separation and distribution and the relationship between us and Bioverativ going forward, including with respect to 
potential tax-related losses associated with the separation and distribution. They also provide for the performance of 
services by each company for the benefit of the other for a period of time (including under the manufacturing and 
supply agreement pursuant to which we will manufacture and supply certain products and materials to Bioverativ).

The spin-off of our hemophilia business as an independent public company is intended to qualify for tax-free 

treatment to Biogen and its shareholders under the Internal Revenue Code. Completion of the spin-off was 
conditioned upon, among other things, our receipt of a favorable opinion from our tax advisors with respect to the 
tax-free nature of the transaction. The opinion is not binding on the U.S. Internal Revenue Service (IRS) or the 
courts, and there can be no assurance that the IRS or the courts will not challenge the qualification of the spin-off 
as a tax-free transaction or that any such challenge would not prevail. If the spin-off is determined to be taxable, the 
full financial benefits expected to result from the separation may not be achieved and/or Biogen and its 
shareholders could incur significant tax liabilities, which could adversely affect our business, financial condition or 
results of operations and the value of our stock could be adversely impacted.

Bioverativ has agreed to indemnify us for certain potential liabilities that may arise, but we cannot guarantee 

that Bioverativ will be able to satisfy its indemnification obligations. The separation and distribution agreement 
provides for indemnification obligations designed to make Bioverativ financially responsible for many liabilities that 
may exist relating to its business activities, whether incurred prior to or after the distribution, including any pending 
or future litigation. It is possible that a court would disregard the allocation agreed to between us and Bioverativ and 

45

require us to assume responsibility for obligations allocated to Bioverativ. Third parties could also seek to hold us 
responsible for any of these liabilities or obligations, and the indemnity rights we have under the separation and 
distribution agreement may not be sufficient to fully cover all of these liabilities and obligations. Even if we are 
successful in obtaining indemnification, we may have to bear costs temporarily. In addition, our indemnity obligations 
to Bioverativ may be significant. These risks could negatively affect our business, financial condition or results of 
operations.

The spin-off of Bioverativ continues to involve a number of risks, including, among other things, the 

indemnification risks described above. Certain of the agreements described above provide for the performance of 
services by each company for the benefit of the other for a period of time. If Bioverativ is unable to satisfy its 
obligations under these agreements, including its indemnification obligations, we could incur losses. These 
arrangements could also lead to disputes over rights to certain shared property and over the allocation of costs and 
revenues for products and operations. Our inability to effectively manage the separation activities and related events 
could adversely affect our business, financial condition or results of operations.

We may not achieve some or all of the anticipated benefits of the spin-off of our hemophilia business, which may 

adversely affect our business.

We may not be able to achieve the full strategic and financial benefits expected to result from the spin-off of 

our hemophilia business, or such benefits may not occur at all. If we fail to achieve some or all of the expected 
benefits of the spin-off, our business, financial condition, results of operations and the value of our stock could be 
adversely impacted.

Item  1B.  

Unresolved Staff Comments

None.

Item  2.  

Properties

Below is a summary of our owned and leased properties as of December 31, 2017.

Massachusetts

In Cambridge, MA, we own approximately 508,000 square feet of real estate space, consisting of a building 

that houses a research laboratory and a cogeneration plant totaling approximately 263,000 square feet and a 
building that contains research, development and quality laboratories totaling approximately 245,000 square feet.

In addition, we lease a total of approximately 1,157,000 square feet in Massachusetts, which is summarized as 

follows:

•  800,000 square feet in Cambridge, MA, which is comprised of offices for our corporate headquarters, and other 
administrative and development functions and laboratories, of which 242,000 square feet is subleased by 
multiple companies for general office space, laboratories and manufacturing facilities; and

•  357,000 square feet of office space in Weston, MA, of which 174,000 square feet has been subleased through 

the remaining term of our lease agreement.

Our Massachusetts lease agreements expire at various dates through the year 2028.

North Carolina

In RTP, NC, we own approximately 1,022,000 square feet of real estate space, which is summarized as follows:

•  357,000 square feet of laboratory and office space;

•  188,000 square feet related to an oral solid dose manufacturing facility;

•  175,000 square feet related to a large-scale biologics manufacturing facility;

•  105,000 square feet related to a small-scale biologics manufacturing facility;

•  84,000 square feet of warehouse space and utilities; 

•  70,000 square feet related to a parenteral fill-finish facility; and

46

•  43,000 square feet related to a large-scale purification facility.

In addition, we own approximately 40,000 square feet of warehouse space in Durham, NC. 

Denmark

We own a large-scale biologics manufacturing facility totaling approximately 228,000 square feet located in 

Hillerød, Denmark. 

We also own approximately 306,000 square feet of additional space, which is summarized as follows:

•  139,000 square feet of warehouse, utilities and support space;

•  70,000 square feet related to a label and packaging facility;

•  50,000 square feet related to a laboratory facility; and

•  47,000 square feet of administrative space.

Switzerland

In December 2015 we purchased land in Solothurn, Switzerland and are building a large-scale biologics 

manufacturing facility at this site. We expect this facility to be operational by the end of the decade. Upon 
completion, the facility will include 393,000 square feet related to a large-scale biologics manufacturing facility, 
290,000 square feet of warehouse, utilities and support space and 51,000 square feet of administrative space.  

Other International

We lease office space in Zug, Switzerland, our international headquarters, the U.K., Germany, France, Denmark 

and numerous other countries. Our international lease agreements expire at various dates through the year 2028.

Item  3.  

Legal Proceedings

For a discussion of legal matters as of December 31, 2017, please read Note 21, Litigation, to our consolidated 

financial statements included in this report, which is incorporated into this item by reference.

Item  4.  

Mine Safety Disclosures

Not applicable.

47

Item 5.  
Purchases of Equity Securities

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

PART II

Market and Stockholder Information

Our common stock trades on The Nasdaq Global Select Market under the symbol “BIIB.” The following table 

shows the high and low sales price for our common stock as reported by The Nasdaq Global Select Market for each 
quarter in the years ended December 31, 2017 and 2016:

First Quarter ....................................................... $
Second Quarter .................................................. $
Third Quarter ...................................................... $
Fourth Quarter .................................................... $

Common Stock Price

2017

High

298.00 $
291.90 $
330.00 $
348.84 $

Low
254.15 $
244.28 $
269.50 $
301.81 $

2016

High

Low

301.02 $
292.69 $
333.65 $
329.83 $

242.07
223.02
240.07
268.00

The sales prices in the first quarter of 2017 in the tables above have been adjusted for the impact of the spin-

off of our hemophilia business. For additional information on the spin-off of our hemophilia business, please read 
Note 3, Hemophilia Spin-Off, to our consolidated financial statements included in this report.

As of January 26, 2018, there were approximately 665 shareholders of record of our common stock.

Dividends

We have not paid cash dividends since our inception. While we historically have not paid cash dividends and do 

not have a current intention to pay cash dividends, we continually review our capital allocation strategies, including, 
among other things, payment of cash dividends, stock repurchases or acquisitions.

Issuer Purchases of Equity Securities

In July 2016 our Board of Directors authorized our 2016 Share Repurchase Program, which is a program to 
repurchase up to $5.0 billion of our common stock. This authorization does not have an expiration date. All share 
repurchases under this authorization will be retired.

During the year ended December 31, 2017, we repurchased and retired approximately 3.7 million shares of 

common stock at a cost of $1.0 billion under our 2016 Share Repurchase Program. As of December 31, 2017, 
approximately $3.0 billion remains available for share repurchases under our 2016 Share Repurchase Program.

In February 2011 our Board of Directors authorized a program to repurchase up to 20.0 million shares of our 

common stock (2011 Share Repurchase Program). Shares repurchased under this authorization were principally 
used to offset common stock issuances under our share-based compensation programs. 

During the year ended December 31, 2017, we repurchased approximately 1.2 million shares of common stock 

at a cost of $365.4 million under our 2011 Share Repurchase Program. Our 2011 Share Repurchase Program was 
completed as of March 31, 2017.

48

 
 
 
Stock Performance Graph

The graph below compares the five-year cumulative total stockholder return on our common stock, the S&P 

500 Index, the Nasdaq Pharmaceutical Index and the Nasdaq Biotechnology Index assuming the investment of 
$100.00 on December 31, 2012 with dividends being reinvested. The stock price performance in the graph below is 
not necessarily indicative of future price performance. The table below reflects the stock prices as adjusted for the 
spin-off of our hemophilia business, which was effected on February 1, 2017. For additional information on the spin-
off of our hemophilia business, please read Note 3, Hemophilia Spin-Off, to our consolidated financial statements 
included in this report.

Biogen Inc.

Nasdaq Pharmaceutical

S&P 500 Index

Nasdaq Biotechnology

2012

2013

2014

2015

2016

2017

100.00

100.00

100.00

100.00

191.00

135.68

132.39

166.02

231.91

165.29

150.51

223.13

209.30

174.27

152.59

249.39

193.74

172.37

170.84

196.15

235.96

205.33

208.14

238.64

49

Item 6.  

Selected Financial Data

BIOGEN INC. AND SUBSIDIARIES
SELECTED FINANCIAL DATA

Our results of operations are summarized as follows:

2017

(a) (b) (c) (d) (e)

(In millions, except per share amounts)
Results of Operations (1)
Product revenues, net (2) ........................ $ 10,354.7 $
Revenues from anti-CD20 therapeutic
programs................................................
Other revenues .......................................
Total revenues ..................................
Total cost and expenses..........................
Gain on sale of rights ..............................
Income from operations...........................
Other income (expense), net ....................
Income before income tax expense and
equity in loss of investee, net of tax .........
Income tax expense ................................
Equity in loss of investee, net of tax .........
Net income.............................................
Net income (loss) attributable to
noncontrolling interests, net of tax ...........
Net income attributable to Biogen Inc. ...... $

1,559.2
360.0
12,273.9
6,929.7
—
5,344.2
(215.4)

5,128.8
2,458.7
—
2,670.1

131.0
2,539.1 $

For the Years Ended December 31,

2016

(c) (e)

2015

(e) (f)

2014

2013

(g)

9,817.9 $

9,188.5 $

8,203.4 $

5,542.3

1,314.5
316.4
11,448.8
6,298.4
—
5,150.4
(217.4)

4,933.0
1,237.3
—
3,695.7

1,339.2
236.1
10,763.8
5,872.8
—
4,891.0
(123.7)

4,767.3
1,161.6
12.5
3,593.2

1,195.4
304.5
9,703.3
5,747.7
16.8
3,972.4
(25.8)

3,946.6
989.9
15.1
2,941.6

1,126.0
263.9
6,932.2
4,441.6
24.9
2,515.5
(34.9)

2,480.6
601.0
17.2
1,862.3

(7.1)
3,702.8 $

46.2
3,547.0 $

6.8
2,934.8 $

—
1,862.3

Diluted Earnings Per Share
Diluted earnings per share attributable to
Biogen Inc. ............................................. $
Weighted-average shares used in
calculating diluted earnings per share
attributable to Biogen Inc. .......................

11.92 $

16.93 $

15.34 $

12.37 $

7.81

213.0

218.8

231.2

237.2

238.3

Our financial condition is summarized as follows:

2017

2016

2015

2014

2013

As of December 31,

(In millions)
Financial Condition (1)
Cash, cash equivalents and marketable
securities ............................................... $
1,848.5
Total assets............................................ $ 23,652.6 $ 22,876.8 $ 19,504.8 $ 14,314.7 $ 11,863.3
Notes payable and other financing 
arrangements, less current portion (3)...... $
6,512.7 $
Total Biogen Inc. shareholders’ equity (4) . $ 12,612.8 $ 12,140.1 $

6,521.5 $
580.3 $
9,372.8 $ 10,809.0 $

592.4
8,620.2

3,316.0 $

7,724.5 $

6,188.9 $

5,935.0 $

6,746.3 $

In addition to the following notes, the financial data included within the tables above should be read in 

conjunction with our consolidated financial statements and related notes and Item 7. Management’s Discussion and 
Analysis of Financial Condition and Results of Operations included in this report and our previously filed Annual 
Reports on Form 10-K.

50

 
 
(1)  On February 1, 2017, we completed the spin-off of our hemophilia business, Bioverativ, as an independent, 

publicly traded company. Our consolidated results of operations and financial position reflect the financial 
results of our hemophilia business for all periods through January 31, 2017. For additional information on the 
spin-off of our hemophilia business, please read Note 3, Hemophilia Spin-Off, to our consolidated financial 
statements included in this report.

(2)  Product revenues, net reflect the impact of the following product launches:

•  Commercial sales of SPINRAZA in the U.S. began in the fourth quarter of 2016 and in rest of world 

markets in the first quarter of 2017.

•  Under our collaboration agreement with AbbVie, we began to recognize revenues on sales of ZINBRYTA to 

third parties in the E.U. in the third quarter of 2016. 

•  Under our commercial agreement with Samsung Bioepis, we began to recognize revenues on sales of 

BENEPALI and FLIXABI to third parties in the E.U. in the first quarter of 2016 and third quarter of 2016, 
respectively. 

•  Commercial sales of ALPROLIX commenced in the second quarter of 2014 and commercial sales of 

ELOCTATE and PLEGRIDY commenced in the third quarter of 2014. 

•  Commercial sales of TECFIDERA began in April 2013.  

(3)  Notes payable and other financing arrangements reflects:

•  Our 2017 repayment of our 6.875% notes that were issued in 2008 with an aggregate principal amount 

of $550.0 million, and 

•  The issuance of our senior unsecured notes for an aggregate principal amount of $6.0 billion in 

September 2015.

(4)  Total Biogen Inc. shareholders' equity reflects the repurchase of approximately 29.9 million shares of our 

common stock at a cost of approximately $8.7 billion between 2013 and 2017:

•  During 2017 we repurchased and retired approximately 3.7 million shares of our common stock at a cost 

of $1.0 billion under our 2016 Share Repurchase Program.

•  During 2017 we repurchased approximately 1.2 million shares of our common stock at a cost of $365.4 

million under our 2011 Share Repurchase Program. 

•  During 2016 we repurchased and retired approximately 3.3 million shares of our common stock at a cost 

of $1.0 billion under our 2016 Share Repurchase Program.

•  During 2015 we repurchased and retired approximately 16.8 million shares of our common stock at a 

cost of $5.0 billion under a program authorized by our Board of Directors in May 2015 for the repurchase 
of up to $5.0 billion of our common stock (2015 Share Repurchase Program).

•  During 2014 and 2013 we repurchased approximately 2.9 million and 2.0 million shares, respectively, of 
our common stock at a cost of approximately $1.3 billion under our 2011 Share Repurchase Program.

(a)  Total cost and expenses for the year ended December 31, 2017, includes a pre-tax charge to acquired in-

process research and development of $120.0 million for an upfront payment made to Remedy upon closing of 
our asset purchase transaction for BIIB093.

(b)  Net income (loss) attributable to noncontrolling interests, net of tax for the year ended December 31, 2017, 
includes a pre-tax charge of $150.0 million for a payment to Neurimmune in exchange for a 15% reduction in 
royalty rates payable on products developed under the agreement, including on potential commercial sales of 
aducanumab.

(c)  Total cost and expenses for the year ended December 31, 2016, includes a pre-tax charge of $454.8 million 

related to our January 2017 settlement and license agreement with Forward Pharma.

Total cost and expenses for the year ended December 31, 2017, includes $444.2 million of amortization and 
impairment charges related to our U.S. and rest of world licenses to Forward Pharma’s intellectual property, 
including Forward Pharma's intellectual property related to TECFIDERA. For additional information on our 

51

settlement and license agreement with Forward Pharma and related intangible assets, please read Note 7, 
Intangible Assets and Goodwill, to our consolidated financial statements included in this report.

(d)  Income tax expense for the year ended December 31, 2017, includes $1,173.6 million related to our current 

estimate of the provisions of the 2017 Tax Act, including a $989.6 million expense under the Transition Toll Tax. 
For additional information on the 2017 Tax Act, please read Note 17, Income Taxes, to our consolidated 
financial statements included in this report.

(e)  Total cost and expenses for the years ended December 31, 2017, 2016 and 2015, include restructuring 

charges of $0.9 million, $33.1 million and $93.4 million, respectively. In addition, total cost and expenses for 
the year ended December 31, 2016, also include charges to cost of sales totaling $52.4 million of expenses 
incurred as a result of our determination to cease manufacturing and vacate our small-scale biologics facility in 
Cambridge, MA as well as close and vacate our warehouse in Somerville, MA. Total cost and expenses for the 
years ended December 31, 2017 and 2016, also includes $19.2 million and $18.1 million, respectively, of 
costs incurred directly related to the spin-off of our hemophilia business into an independent, publicly traded 
company. 

(f)  Net income attributable to Biogen Inc. for the year ended December 31, 2015, includes a pre-tax charge to 

noncontrolling interest of $60.0 million for a milestone payment due to Neurimmune upon the enrollment of the 
first patient in a Phase 3 trial for aducanumab.

(g)  Commencing in the second quarter of 2013 product and total revenues include 100% of net revenues related 

to sales of TYSABRI as a result of our acquisition of all remaining rights to TYSABRI from Elan Pharma 
International, Ltd (Elan), an affiliate of Elan Corporation, plc. Upon closing of this transaction, our collaboration 
agreement was terminated. 

52

Management’s Discussion and 

Item 7.  
Analysis of Financial Condition and Results 
of Operations

The following discussion should be read in 

conjunction with our consolidated financial 
statements and related notes beginning on page F-1 
of this report. Certain totals may not sum due to 
rounding.

Executive Summary

Introduction

Biogen is a global biopharmaceutical company 

focused on discovering, developing and delivering 
worldwide innovative therapies for people living with 
serious neurological and neurodegenerative diseases, 
including in our core growth areas of MS and 
neuroimmunology, AD and dementia, movement 
disorders and neuromuscular disorders, including 
SMA and ALS. We also plan to invest in emerging 
growth areas such as pain, ophthalmology, 
neuropsychiatry and acute neurology. In addition, we 
are employing innovative technologies to discover 
potential treatments for rare and genetic disorders, 
including new ways of treating diseases through gene 
therapy in the previously mentioned areas. We also 
manufacture and commercialize biosimilars of 
advanced biologics.

Our marketed products include TECFIDERA, 
AVONEX, PLEGRIDY, TYSABRI, ZINBRYTA and FAMPYRA 
for the treatment of MS, SPINRAZA for the treatment 
of SMA and FUMADERM for the treatment of severe 
plaque psoriasis. We also have certain business and 
financial rights with respect to RITUXAN for the 
treatment of non-Hodgkin's lymphoma, CLL and other 
conditions, GAZYVA for the treatment of CLL and 
follicular lymphoma, OCREVUS for the treatment of 
PPMS and RMS, and other potential anti-CD20 
therapies under a collaboration agreement with 
Genentech.

Our current revenues depend upon continued 

sales of our principal products and, unless we 
develop, acquire rights to and/or commercialize new 
products and technologies, we may be substantially 
dependent on sales from our principal products for 
many years. 

In the longer term, our revenue growth will be 

dependent upon the successful clinical development, 
regulatory approval and launch of new commercial 
products as well as additional indications for our 
existing products, our ability to obtain and maintain 
patents and other rights related to our marketed 
products, assets originating from our research and 
development efforts and/or successful execution of 
external business development opportunities.

53

Our innovative drug development and 

commercialization activities are complemented by our 
biosimilar therapies, which expand access to 
medicines and reduce the cost burden for healthcare 
systems. We are leveraging our manufacturing 
capabilities and know-how to develop, manufacture 
and market biosimilars through Samsung Bioepis, our 
joint venture with Samsung Biologics. Under our 
commercial agreement, we market and sell BENEPALI, 
an etanercept biosimilar referencing ENBREL, and 
FLIXABI, an infliximab biosimilar referencing 
REMICADE, in the E.U.

2017 Corporate Strategy

In July 2017 we announced an updated strategic 

framework to optimize the value of our MS business 
while investing for the future across our core growth 
areas of MS and neuroimmunology, AD and dementia, 
movement disorders, and neuromuscular diseases, 
including SMA and ALS. We also plan to invest in 
emerging growth areas such as pain, ophthalmology, 
neuropsychiatry, and acute neurology. 

We expect the continued performance of our 

commercial assets and the expiration of the 
contingent payments related to TECFIDERA, discussed 
further in the “Contractual Obligations and Off-Balance 
Sheet Arrangements” section of this report, to enable 
us to invest in and build an industry leading 
neuroscience pipeline. We view investment in growth 
as our top priority, but also recognize the value of 
opportunistically returning excess capital to 
shareholders through share repurchases.

In order to deliver positive results in the near 

term while investing in the next stages of our growth, 
we will focus on the following strategic priorities:

•  maximizing the resilience of our MS core 

business;

•  accelerating efforts in SMA as a significant new 

growth opportunity;

•  developing and expanding our neuroscience 

portfolio;

• 

focusing our capital allocation efforts to drive 
investment for future growth; and

•  creating a leaner and simpler operating model to 

streamline our operations and reallocate 
resources towards prioritized research and 
development and commercial value creation 
opportunities.

In October 2017, in connection with creating a 
leaner and simpler operating model, we approved a 
corporate restructuring program intended to 
streamline our operations and reallocate resources. 
We expect to make total non-recurring operating and 

capital expenditures of up to $170.0 million, primarily 
in 2018, and our goal is to redirect resources of up to 
$400.0 million annually by 2020 to prioritized 
research and development and other value creation 
opportunities.

Tax Reform

The 2017 Tax Act has resulted in significant 
changes to the U.S. corporate income tax system. 
These changes include a federal statutory rate 
reduction from 35% to 21%, the elimination or 
reduction of certain domestic deductions and credits 
and limitations on the deductibility of interest expense 
and executive compensation. The 2017 Tax Act also 
transitions international taxation from a worldwide 
system to a modified territorial system and includes 
base erosion prevention measures on non-U.S. 
earnings, which has the effect of subjecting certain 
earnings of our foreign subsidiaries to U.S. taxation 
as GILTI. These changes are effective beginning in 
2018.

The 2017 Tax Act also includes the Transition 

Toll Tax, which is a one-time mandatory deemed 
repatriation tax on accumulated foreign subsidiaries' 
previously untaxed foreign earnings. 

Changes in tax rates and tax laws are accounted 

for in the period of enactment. Therefore, during the 
year ended December 31, 2017, we recorded a 
charge totaling $1,173.6 million related to our current 
estimate of the provisions of the 2017 Tax Act, 
including a $989.6 million expense under the 
Transition Toll Tax. The Transition Toll Tax will be paid 
over an eight-year period, starting in 2018, and will 
not accrue interest.

The 2017 Tax Act will provide us with flexibility in 

deploying our cash resources to advance our 
business interests. We expect that it will have a 
modest positive effect on our income tax rate in 2018 
and a potential incremental benefit thereafter.

Hemophilia Spin-Off

On February 1, 2017, we completed the spin-off 

of our hemophilia business, Bioverativ, as an 
independent, publicly traded company trading under 
the symbol "BIVV" on the Nasdaq Global Select 
Market. The spin-off was accomplished through the 
distribution of all the then outstanding shares of 
common stock of Bioverativ to Biogen shareholders, 
who received one share of Bioverativ common stock 
for every two shares of Biogen common stock they 
owned. The separation and distribution was 
structured to be tax-free for shareholders for federal 
income tax purposes. Bioverativ assumed all of our 
rights and obligations under our collaboration 
agreement with Sobi and our collaboration and 
license agreement with Sangamo.

Our consolidated results of operations and 

financial position included in this report reflect the 
financial results of our hemophilia business for all 
periods through January 31, 2017.

For additional information on the spin-off of our 

hemophilia business, please read Note 3, Hemophilia 
Spin-Off, to our consolidated financial statements 
included in this report.

Financial Highlights

Diluted earnings per share attributable to Biogen 

Inc. were $11.92 for 2017, representing a decrease 
of 29.6% versus the same period in 2016.

As described below under “Results of 

Operations,” our income from operations for the year 
ended December 31, 2017 reflects the following:

•  Total revenues were $12,273.9 million for 2017, 
representing an increase of 7.2% over the same 
period in 2016.

•  Product revenues, net totaled $10,354.7 million 
for 2017, representing an increase of 5.5% over 
the same period in 2016. This increase was 
primarily driven by revenues from SPINRAZA, 
TECFIDERA and BENEPALI, partially offset by the 
elimination of worldwide ALPROLIX and 
ELOCTATE revenues resulting from the spin-off of 
our hemophilia business on February 1, 2017 
and a net decrease in total Interferon sales. 

54

•  Revenues from anti-CD20 therapeutic programs 
totaled $1,559.2 million for 2017, representing 
an increase of 18.6% over the same period in 
2016. This increase was primarily driven by 
royalty revenues on sales of OCREVUS and 
Biogen's share of pre-tax profits on RITUXAN.

•  Other revenues totaled $360.0 million for 2017, 
representing an increase of 13.8% from the 
same period in 2016. This increase was 
primarily driven by an increase in other royalty 
and corporate revenues.

•  Total cost and expenses totaled $6,929.7 

million for 2017, representing an increase of 
10.0%, compared to the same period in 2016. 
This increase was primarily driven by $444.2 
million of amortization and impairment charges 
related to our U.S. and rest of world licenses to 
Forward Pharma's intellectual property, including 
Forward Pharma's intellectual property related to 
TECFIDERA, a 14.2% increase in research and 
development primarily related to higher 
milestone and upfront expenses, a 10.2% 
increase in cost of goods sold, a $120.0 million 
pre-tax charge to acquired in-process research 
and development for an upfront payment made 
to Remedy upon the closing of the asset 
purchase transaction for BIIB093 and an 
increase in collaboration profit sharing. These 
increases were partially offset by a $454.8 
million litigation settlement charge in the prior 
year.

As described below under "Financial Condition, 

Liquidity and Capital Resources":

•  We generated $4,551.0 million of net cash flows 
from operations for 2017, which were primarily 
driven by earnings. 

•  Cash, cash equivalents and marketable 

securities totaled approximately $6,746.3 
million as of December 31, 2017.

•  We repurchased approximately 4.9 million 

shares of common stock at a cost of $1.4 billion 
during 2017 under our share repurchase 
programs. 

Acquisitions

BIIB093 Acquisition

In May 2017 we completed an asset purchase of 

the Phase 3-ready candidate BIIB093 (intravenous 
glibencamide) (formerly known as CIRARA) from 
Remedy. The target indication for BIIB093 is LHI, a 
severe form of ischemic stroke where cerebral edema 
often leads to a disproportionately large share of 
stroke-related morbidity and mortality. The FDA 
recently granted BIIB093 Orphan Drug Designation for 

55

severe cerebral edema in patients with acute 
ischemic stroke. The FDA has also granted BIIB093 
Fast Track designation.

Under this agreement, we are responsible for the 

future development and commercialization of 
BIIB093. Remedy will share in the cost of 
development for the target indication for BIIB093 in 
LHI stroke.

For additional information on our transaction with 

Remedy, please read Note 2, Acquisitions, to our 
consolidated financial statements included in this 
report.

Collaborative and Other Relationships

BIIB092 License Agreement

In June 2017 we completed an exclusive license 

agreement with BMS for BIIB092 (formerly known as 
BMS-986168), a Phase 2-ready experimental 
medicine with potential in AD and PSP. BIIB092 is an 
antibody targeting tau, the protein that forms the 
deposits, or tangles, in the brain associated with AD 
and other neurodegenerative tauopathies such as PSP. 

Under this agreement, we received worldwide 

rights to BIIB092 and are responsible for the full 
development and global commercialization of BIIB092 
in AD and PSP. 

For additional information on our collaboration 

arrangement with BMS, please read Note 20, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

Eisai Collaboration Agreement

In October 2017 we entered into a new 

collaboration agreement with Eisai for the joint 
development and commercialization of aducanumab 
(the Aducanumab Collaboration Agreement). Under 
the Aducanumab Collaboration Agreement, we will 
continue to lead the ongoing Phase 3 development of 
aducanumab and will remain responsible for 100% of 
development costs for aducanumab until April 2018. 
Eisai will then reimburse us for 15% of aducanumab 
development expenses for the period April 2018 
through December 2018, and 45% thereafter. Upon 
commercialization, both companies will co-promote 
aducanumab with a region-based profit split.

In addition, we and Eisai will continue to jointly 

develop BAN2401 and E2609.

We and Eisai will co-promote AVONEX, TYSABRI 
and TECFIDERA in Japan in certain settings and Eisai 
will distribute AVONEX, TYSABRI, TECFIDERA and 
PLEGRIDY in India and other Asia-Pacific markets, 
excluding China.

For additional information on our collaboration 

Ionis Collaboration Agreement

arrangement with Eisai, please read Note 20, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

Neurimmune Collaboration Agreement

In October 2017 we amended the terms of our 

collaboration and license agreement with 
Neurimmune. Under the amended agreement, we 
made a $150.0 million payment to Neurimmune, 
which is reflected as a charge to noncontrolling 
interests, in exchange for a 15% reduction in royalty 
rates payable on products developed under the 
agreement, including on potential commercial sales of 
aducanumab. Our royalty rates payable on products 
developed under the agreement, including on 
potential commercial sales of aducanumab, will now 
range from the high single digits to low-teens. 

Under the amended agreement, we also have an 
option that will expire in April 2018 to further reduce 
our royalty rates payable on products developed under 
the agreement, including on potential commercial 
sales of aducanumab, by an additional 5% in 
exchange for a $50.0 million payment to 
Neurimmune.

For additional information on our collaboration 

arrangement with Neurimmune, please read Note 19, 
Investments in Variable Interest Entities, to our 
consolidated financial statements included in this 
report.

BIIB098 License Agreement

In November 2017 we entered into an exclusive 
license and collaboration agreement with Alkermes for 
BIIB098 (formerly known as ALKS 8700), an oral MMF 
prodrug in Phase 3 development for the treatment of 
relapsing forms of MS. 

Under this agreement, we received an exclusive, 

worldwide license to develop and commercialize 
BIIB098 and will pay Alkermes a royalty on potential 
worldwide net sales of BIIB098. Beginning in 2018 we 
are responsible for all development expenses related 
to BIIB098. Alkermes will maintain responsibility for 
regulatory interactions with the FDA through the 
potential approval of the NDA for BIIB098 for the 
treatment of MS. 

For additional information on our collaboration 

arrangement with Alkermes, please read Note 20, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

In December 2017 we entered into a new 
collaboration agreement with Ionis to identify new 
ASO drug candidates for the treatment of SMA. Under 
this agreement, we have the option to license 
therapies arising out of this collaboration and will be 
responsible for the development and 
commercialization of these therapies.

For additional information on our new 
collaboration arrangement with Ionis, please read 
Note 20, Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

Business Environment

The biopharmaceutical industry and the markets 

in which we operate are intensely competitive. Many 
of our competitors are working to develop or have 
commercialized products similar to those we market 
or are developing and have considerable experience in 
undertaking clinical trials and in obtaining regulatory 
approval to market pharmaceutical products. In 
addition, the commercialization of certain of our own 
approved MS products, products of our collaborators 
and pipeline product candidates may negatively 
impact future sales of our existing MS products. Our 
products may also face increased competitive 
pressures from the introduction of generic versions, 
prodrugs of existing therapies or biosimilars of 
existing products and other technologies. 

Sales of our products are dependent, in large 

part, on the availability and extent of coverage, pricing 
and reimbursement from government health 
administration authorities, private health insurers and 
other organizations. Drug prices are under significant 
scrutiny in the markets in which our products are 
prescribed. Drug pricing and other health care costs 
continue to be subject to intense political and societal 
pressures on a global basis. 

In addition, our sales and operations are subject 

to the risks of doing business internationally. For 
example, the effects of the implementation of the 
U.K.’s decision to voluntarily depart from the E.U., 
known as Brexit, remain unclear; compliance with any 
resulting regulatory mandates may prove challenging 
and the macroeconomic impact on our sales and 
consolidated results of operations from these 
developments remains unknown.

For additional information on our competition 

and pricing risks that could negatively impact our 
product sales, please read Item 1A. Risk Factors and 
Item 7A. Quantitative and Qualitative Disclosures About 
Market Risk included in this report.

56

Results of Operations

Revenues

Revenues are summarized as follows:

(In millions, except percentages)
Product Revenues:

For the Years Ended
December 31,

2017

2016

2015

% Change

2017 
compared to 
2016

2016 
compared to 
2015

United States ..................................... $
Rest of world......................................
Total product revenues ....................

7,017.1 $
3,337.6
10,354.7

7,050.4 $
2,767.5
9,817.9

6,545.8
2,642.7
9,188.5

Revenues from anti-CD20 therapeutic
programs .............................................
Other revenues.....................................

1,339.2
236.1
Total revenues................................ $ 12,273.9 $ 11,448.8 $ 10,763.8

1,314.5
316.4

1,559.2
360.0

(0.5)%
20.6 %
5.5 %

18.6 %
13.8 %
7.2 %

7.7 %
4.7 %
6.8 %

(1.8)%
34.0 %
6.4 %

Product Revenues

Product revenues are summarized as follows:

(In millions, except percentages)
Multiple Sclerosis:

For the Years Ended
December 31,

2017

2016

2015

% Change

2017 
compared to 
2016

2016 
compared to 
2015

TECFIDERA ........................................ $
Interferon* ........................................
TYSABRI............................................
FAMPYRA...........................................
ZINBRYTA ..........................................

4,214.0 $
2,645.8
1,973.1
91.6
52.7

3,968.1 $
2,795.2
1,963.8
84.9
7.8

3,638.4
2,968.7
1,886.1
89.7
—

6.2 %
(5.3)%
0.5 %
7.9 %
**

9.1 %
(5.8)%
4.1 %
(5.4)%
**

Spinal Muscular Atrophy:

SPINRAZA..........................................

883.7

4.6

—

**

**

Hemophilia:

ELOCTATE..........................................
ALPROLIX ..........................................

Other product revenues:

FUMADERM .......................................
BENEPALI ..........................................
FLIXABI .............................................

48.4
26.0

39.6
370.8
9.0

Total product revenues ..................... $ 10,354.7 $

* Interferon includes AVONEX and PLEGRIDY.
** Percentage not meaningful.

513.2
333.7

45.9
100.6
0.1
9,817.9 $

319.7
234.5

51.4
—
—
9,188.5

(90.6)%
(92.2)%

(13.7)%
**
**
5.5 %

60.5 %
42.3 %

(10.7)%
**
**
6.8 %

57

 
 
 
 
Multiple Sclerosis (MS)

TECFIDERA

Interferon

AVONEX and PLEGRIDY

For 2017 compared to 2016, the increase in 

For 2017 compared to 2016, the decrease in 

U.S. TECFIDERA revenues was primarily due to price 
increases, partially offset by higher discounts and 
allowances and a decrease in unit sales volume of 
3%. 

For 2016 compared to 2015, the increase in 

U.S. TECFIDERA revenues was primarily due to price 
increases, partially offset by higher discounts and 
allowances and a decrease in unit sales volume of 
1%.

For 2017 compared to 2016, the increase in rest 

of world TECFIDERA revenues was primarily due to 
increases in unit sales volume of 19% primarily in the 
E.U., partially offset by pricing reductions in certain 
European countries.

For 2016 compared to 2015, the increase in rest 

of world TECFIDERA revenues was primarily due to 
increases in unit sales volume of 32% in existing 
markets and new markets where we continue to 
launch the product and expand our presence around 
the world. These increases were partially offset by 
pricing reductions in certain European countries. Rest 
of world TECFIDERA revenues for 2016, compared to 
2015, were also negatively impacted by a $50.2 
million decrease in hedge gains recognized under our 
foreign currency hedging program in the comparative 
period. 

We anticipate a modest increase in TECFIDERA 

demand on a global basis in 2018, compared to 
2017, with expected volume growth in our 
international markets partially offset by declines in 
the U.S., due to increased competition from additional 
treatments for MS, including OCREVUS.

58

U.S. Interferon revenues was primarily due to an 
overall decrease in Interferon unit sales volumes of 
12%, which was primarily attributable to patients 
transitioning to other MS therapies, partially offset by 
price increases.  

For 2016 compared to 2015, the decrease in 

U.S. Interferon revenues was primarily due to an 
overall decrease in Interferon unit sales volume of 
10%, which was attributable to a decrease in AVONEX 
unit sales volume primarily due to patients 
transitioning to other oral MS therapies, as well as 
higher discounts and allowances. These decreases 
were partially offset by price increases.

For 2017 compared to 2016, the decrease in 

rest of world Interferon revenues was primarily due to 
an overall decrease in AVONEX unit sales volume of 
14% primarily due to patients transitioning to other 
MS therapies in the E.U. 

For 2016 compared to 2015, the decrease in 

rest of world Interferon revenues was primarily due to 
pricing reductions in certain European countries and 
an overall decrease in AVONEX unit sales volume of 
10% due primarily to patients transitioning to other 
oral MS therapies, including TECFIDERA. Rest of world 
Interferon revenues for 2016, compared to 2015, 
were also negatively impacted by a $66.1 million 
decrease in hedge gains recognized under our 
hedging program in the comparative period. 

We expect that overall Interferon revenues will 

For 2017 compared to 2016, the increase in 

continue to decline compared to prior year periods as 
a result of increasing competition from our other 
products as well as other treatments for MS, including 
biosimilars.

AVONEX

For 2017, 2016 and 2015, U.S. AVONEX 
revenues totaled $1,593.6 million, $1,675.3 million 
and $1,790.2 million, respectively.

For 2017, 2016 and 2015 rest of world AVONEX 

revenues totaled $557.9 million, $638.2 million and 
$840.0 million, respectively.

PLEGRIDY

For 2017, 2016 and 2015, U.S. PLEGRIDY 
revenues totaled $295.5 million, $305.0 million and 
$227.1 million, respectively.

For 2017, 2016 and 2015, rest of world 
PLEGRIDY revenues totaled $198.8 million, $176.7 
million and $111.4 million, respectively.

TYSABRI

rest of world TYSABRI revenues was primarily due to 
the recognition of approximately $45.0 million of 
previously deferred revenue in Italy relating to the 
pricing agreement with AIFA and a 12% increase in 
unit sales volume primarily in our international partner 
markets, partially offset by a prior year favorable 
adjustment of approximately $20.0 million to previous 
reserves estimates related to a government price 
reimbursement program included in our discounts and 
allowances. For information on our agreement with 
AIFA relating to sales of TYSABRI in Italy, please read 
Note 18, Other Consolidated Financial Statement 
Detail, to our consolidated financial statements 
included in this report.

For 2016 compared to 2015, the decrease in 

rest of world TYSABRI revenues was primarily due to 
the impact of a $46.1 million decrease in hedge gains 
recognized under our hedging program in the 
comparative period. This decrease was partially offset 
by an increase in unit sales volume of 8%, primarily in 
Europe.

We anticipate a decline in TYSABRI demand on a 

global basis in 2018, compared to 2017, with 
expected volume declines in the U.S., due to 
increased competition from additional treatments for 
MS, including OCREVUS, offsetting volume growth in 
our international markets.

ZINBRYTA

For 2017 compared to 2016, the decrease in 
U.S. TYSABRI revenues was primarily due to higher 
discounts and allowances and a decrease in unit 
sales volume of 4%, partially offset by price 
increases. 

For 2016 compared to 2015, the increase in 

U.S. TYSABRI revenues was primarily due to an 
increase in unit sales volume of 4% and increases in 
price, partially offset by higher discounts and 
allowances.

Under our collaboration agreement with AbbVie, 

we began to recognize revenues on sales of ZINBRYTA 
to third parties in the E.U. in the third quarter of 
2016.

For 2017 compared to 2016, the increase in 

ZINBRYTA revenues was primarily due to an increase 
in unit sales volume.

59

We expect that the future sales growth of 
ZINBRYTA will be negatively impacted as a result of 
the EC approved restrictions on the use of ZINBRYTA.

Biosimilars

BENEPALI and FLIXABI

For additional information on our relationship 
with AbbVie, including information on the Article 20 
Procedure of ZINBRYTA and resulting impairment of 
ZINBRYTA related assets, please read Note 20, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

Spinal Muscular Atrophy (SMA)

SPINRAZA

Under our commercial agreement with Samsung 
Bioepis, we began to recognize revenues on sales of 
BENEPALI and FLIXABI to third parties in the E.U. in 
the first and third quarters of 2016, respectively.

For 2017 compared to 2016, the increase in 

biosimilar revenues was primarily due to an increase 
in BENEPALI unit sales volume in new and existing 
markets.

For additional information on our relationship 

with Samsung Bioepis, please read Note 20, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

We began to recognize revenues on sales of 

SPINRAZA in the U.S. in the fourth quarter of 2016 
and the rest of world in the first quarter of 2017.

We expect that the rate at which SPINRAZA 
revenues will grow will moderate over time due to the 
loading dynamics as patients transition to dosing 
once every four months.

For additional information on our relationship 
with Ionis, please read Note 20, Collaborative and 
Other Relationships, to our consolidated financial 
statements included in this report.

60

In November 2017 the FDA approved GAZYVA in 

combination with chemotherapy, followed by GAZYVA 
alone, for people with previously untreated advanced 
follicular lymphoma.

In June 2017 the FDA approved RITUXAN 
HYCELA for subcutaneous injection for the treatment 
of adults with previously untreated and relapsed or 
refractory follicular lymphoma, previously untreated 
diffuse large B-cell lymphoma and CLL. This new 
treatment includes the same monoclonal antibody as 
intravenous RITUXAN in combination with 
hyaluronidase human, an enzyme that helps to deliver 
rituximab under the skin.

For 2017 compared to 2016, the increase in 
U.S. product revenues was primarily due to selling 
price increases and an increase in RITUXAN and 
GAZYA unit sales volume of 2% and 6%, respectively, 
partially offset by higher discounts and allowances.

For 2016 compared to 2015, the increase in 

U.S. product revenues was primarily due to an 
increase in GAZYVA unit sales volume of 41%, an 
increase in RITUXAN unit sales of 1% and selling price 
increases, partially offset by higher RITUXAN 
discounts and allowances.

Collaboration costs and expenses for 2017, as 

depicted in the table above, excludes certain 
expenses charged to the collaboration by Genentech 
that we believe remain the responsibility of Genentech 
and that we are not obligated to pay under the terms 
of the collaboration agreement. Accordingly, we did 
not recognize the effect of those expenses in the 
determination of our share of pre-tax collaboration 
profits and Genentech has withheld approximately 
$120 million from amounts due to us in relation to 
collaboration activity for 2017, representing 
Genentech’s estimate of our share of these 
expenses. We remain in discussions with Genentech 
about a resolution relating to these amounts.

Excluding amounts under dispute, collaboration 

costs and expenses for 2017 compared to 2016 
increased primarily due to higher branded 
pharmaceutical drug fees and an increase in RITUXAN 
selling and marketing costs, partially offset by a 
decrease in GAZYVA research and development costs.

Collaboration costs and expenses for 2016 
compared to 2015 increased primarily due to an 
increase in RITUXAN product cost of sales.

Revenues from Anti-CD20 Therapeutic 
Programs

Genentech (Roche Group)

Our share of RITUXAN and GAZYVA collaboration 

operating profits in the U.S. and other revenues on 
anti-CD20 therapeutic programs are summarized as 
follows:

Biogen’s Share of Pre-tax Profits in the U.S. for 

RITUXAN and GAZYVA

The following table provides a summary of 

amounts comprising our share of pre-tax profits on 
RITUXAN and GAZYVA in the U.S.:

For the Years Ended
December 31,

2017

2016

2015

(In millions)
Product
revenues, net ..... $4,206.9 $3,941.8 $3,847.9
Cost and
expenses ...........
Pre-tax profits in
the U.S. ............. $3,451.7 $3,197.3 $3,174.2
Biogen's share of
pre-tax profits ..... $1,316.4 $1,249.5 $1,269.8

755.2

744.5

673.7

Our share of RITUXAN annual pre-tax co-

promotion profits in the U.S. in excess of $50.0 
million decreased to 39% from 40% in February 2016 
when GAZYVA was approved by the FDA as a new 
treatment for follicular lymphoma and further 
decreased to 37.5% in the third quarter of 2017 as 
gross sales of GAZYVA in the U.S. for the preceding 
12-month period exceeded $150.0 million.

61

 
 
Other Revenues from Anti-CD20 Therapeutic 

Programs

Other revenues from anti-CD20 therapeutic 
programs primarily consist of royalty revenues on 
sales of OCREVUS and our share of pre-tax co-
promotion profits on RITUXAN in Canada. 

For 2017 compared to 2016, other revenues 

from anti-CD20 therapeutic programs increased 
primarily due to the launch of OCREVUS in the second 
quarter of 2017.

For 2016 compared to 2015, other revenues 

from anti-CD20 therapeutic programs decreased as a 
result of lower pre-tax co-promotion profits on 
RITUXAN in Canada.

OCREVUS

In March 2017 the FDA approved OCREVUS, a 

humanized anti-CD20 monoclonal antibody, for the 
treatment of RMS and PPMS. Under our agreement 
with Genentech, we will receive a tiered royalty on 
U.S. net sales from 13.5% and increasing up to 24% 
if annual net sales exceed $900.0 million. There will 
be a 50% reduction to these royalties if a biosimilar to 
OCREVUS is approved in the U.S.

Other Revenues

Other revenues are summarized as follows:

In addition, we will receive a 3% royalty on net 
sales of OCREVUS outside the U.S., with the royalty 
period lasting 11 years from the first commercial sale 
of OCREVUS on a country-by-country basis. OCREVUS 
was approved for treatment of RMS and PPMS in 
Australia, Switzerland and the E.U. in July 2017, 
September 2017 and January 2018, respectively. 
Marketing applications for OCREVUS are currently 
under review in numerous markets worldwide, 
including in Latin America and the Middle East. 

The commercialization of OCREVUS does not 

impact the percentage of the co-promotion profits we 
receive for RITUXAN or GAZYVA. Genentech is solely 
responsible for development and commercialization of 
OCREVUS and funding future costs. OCREVUS royalty 
revenues were based on our estimates from third 
party and market research data of OCREVUS sales 
occurring during the corresponding period. Differences 
between actual and estimated royalty revenues will be 
adjusted for in the period in which they become 
known, which is expected to be the following quarter.

For additional information on our collaboration 
with Genentech, including information regarding the 
pre-tax profit sharing formula and its impact on future 
revenues from anti-CD20 therapeutic programs, 
please read Note 20, Collaborative and Other 
Relationships, to our consolidated financial 
statements included in this report.

(In millions, except percentages)
Revenues from collaborative and other
relationships .......................................... $
Other royalty and corporate revenues .......
Total other revenues ............................... $

For The Years 
Ended December 31,

2017

2016

2015

% Change

2017
compared to
2016

2016
compared to
2015

36.5 $

323.5
360.0 $

39.3 $

277.1
316.4 $

69.1
167.0
236.1

(7.1)%
16.7 %
13.8 %

(43.1)%
65.9 %
34.0 %

62

Revenues from Collaborative and Other 

Other Royalty and Corporate Revenues

Relationships

Other revenues from collaborative and other 
relationships include revenues earned under our 50% 
share of the co-promotion profits or losses of 
ZINBRYTA in the U.S. with AbbVie and revenues from 
our technical development and manufacturing 
services agreements with Samsung Bioepis. Prior to 
the spin-off of our hemophilia business, other 
revenues from collaborative and other relationships 
also included revenues earned under our 
manufacturing services agreement with Sobi on 
shipments of ELOCTA and ALPROLIX to Sobi and 
royalties from Sobi on sales of ELOCTA and ALPROLIX 
in their territory, which included substantially all of 
Europe, Russia and certain markets in Northern Africa 
and the Middle East. Bioverativ assumed all of our 
rights and obligations under our agreement with Sobi 
on February 1, 2017.

For 2017 compared to 2016, the decrease in 

other revenues from collaborative and other 
relationships was primarily due to the impact of the 
spin-off of our hemophilia business on February 1, 
2017, partially offset by higher revenues earned 
under our manufacturing services agreement with 
Samsung Bioepis.

For 2016 compared to 2015, the decrease in 

other revenues from collaborative and other 
relationships was primarily due to a net overall loss in 
the collaboration with AbbVie of $21.9 million within 
the U.S. and lower revenues earned under our 
manufacturing services agreement with Samsung 
Bioepis, partially offset by an increase in ELOCTA 
shipments made under our manufacturing services 
agreement with Sobi.

For additional information on our collaborative 

and other relationships, please read Note 20, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

63

We receive royalties from net sales on products 

related to patents that we have out-licensed and we 
record other corporate revenues primarily from 
amounts earned under contract manufacturing 
agreements.

For 2017 compared to 2016, the increase in 
royalty and other corporate revenues was primarily 
due to an increase in sales of the underlying products 
from which we receive royalties and higher contract 
manufacturing revenues related to the volume of 
shipments of drug substance production provided to 
our strategic partners, including Bioverativ.

For 2016 compared to 2015, the increase in 
royalty and other corporate revenues was primarily 
due to higher contract manufacturing revenues related 
to drug substance manufacturing provided to a 
strategic partner.

Reserves for Discounts and Allowances

Revenues from product sales are recorded net 
of reserves established for applicable discounts and 
allowances, including those associated with the 
implementation of pricing actions in certain 
international markets where we operate.

These reserves are based on estimates of the 

amounts earned or to be claimed on the related sales 
and are classified as reductions of accounts 
receivable (if the amount is payable to our customer) 
or a liability (if the amount is payable to a party other 
than our customer). Our estimates take into 
consideration our historical experience, current 
contractual and statutory requirements, specific 
known market events and trends, industry data and 
forecasted customer buying and payment patterns. 
Actual amounts may ultimately differ from our 
estimates. If actual results vary, we adjust these 
estimates, which will have an effect on earnings in the 
period of adjustment. 

Reserves for discounts, contractual adjustments 

and returns that reduced gross product revenues are 
summarized as follows:

For the years ended December 31, 2017, 2016 
and 2015, reserves for discounts and allowances as 
a percentage of gross product revenues were 22.0%, 
21.3% and 19.3%, respectively.

Discounts

Discounts include trade term discounts and 

wholesaler incentives. 

64

For 2017 compared to 2016, the decrease in 

discounts was primarily driven by the impact from the 
spin-off of our hemophilia business on February 1, 
2017, partially offset by an increase in rest of world 
product revenues, due in part to an increase in 
biosimilar revenues, as well as an increase in gross 
selling prices.

For 2016 compared to 2015, the increase in 

discounts was primarily driven by increases in gross 
selling price, contractual discount rates and volume 
related to our hemophilia products.

Contractual Adjustments

Contractual adjustments primarily relate to 
Medicaid and managed care rebates, co-payment 
assistance (copay), VA and PHS discounts, specialty 
pharmacy program fees and other government rebates 
or applicable allowances. 

For 2017 compared to 2016, the increase in 

contractual adjustments was primarily due to higher 
managed care rebates and Medicaid and other 
governmental rebates and allowances in the U.S., due 
in part to an increase in gross selling prices and the 
launch of SPINRAZA in the U.S. in the fourth quarter 
of 2016, partially offset by the impact from the spin-
off of our hemophilia business on February 1, 2017.

For 2016 compared to 2015, the increase in 

contractual adjustments was primarily due to higher 
Medicaid and other governmental rebates and 
allowances in the U.S. and managed care rebates, 
due in part to an increase in gross selling prices.

Returns

Product return reserves are established for 
returns made by wholesalers. In accordance with 
contractual terms, wholesalers are permitted to return 
product for reasons such as damaged or expired 
product. The majority of wholesaler returns are due to 
product expiration. Provisions for product returns are 
recorded in the period the related revenue is 
recognized, resulting in a reduction to product sales. 

For 2017 compared to 2016, return provisions 

were relatively consistent.

For 2016 compared to 2015, return reserves 

decreased primarily due to a reduction in return rates 
based on recent experiences of returned products.

For additional information on our reserves, 
please read Note 5, Reserves for Discounts and 
Allowances, to our consolidated financial statements 
included in this report.

Cost and Expenses

A summary of total cost and expenses is as follows:

(In millions, except percentages)
Cost of sales, excluding amortization of
acquired intangible assets ...................... $
Research and development.....................
Selling, general and administrative ..........
Amortization of acquired intangible
assets...................................................
Acquired in-process research and
development ..........................................
Collaboration profit sharing .....................
Loss (gain) on fair value remeasurement
of contingent consideration.....................
Restructuring charges.............................
TECFIDERA litigation settlement charge....

Total cost and expenses ................... $

6,929.7 $

For the Years Ended
December 31,

2017

2016

2015

% Change

2017 
compared to 
2016

2016 
compared to 
2015

1,630.0 $
2,253.6
1,935.5

1,478.7 $
1,973.3
1,947.9

1,240.4
2,012.8
2,113.1

10.2 %
14.2 %
(0.6)%

19.2 %
(2.0)%
(7.8)%

814.7

120.0
112.3

62.7
0.9
—

385.6

382.6

111.3 %

0.8 %

—
10.2

—
—

**
**

14.8
33.1
454.8
6,298.4 $

30.5
93.4
—
5,872.8

323.6 %
(97.3)%
(100.0)%
10.0 %

**
**

(51.5)%
(64.6)%
**
7.2 %

** Percentage not meaningful.

Cost of Sales, Excluding Amortization of Acquired 

Product Cost of Sales

Intangible Assets (Cost of Sales)

For 2017 compared to 2016, the increase in 
product cost of sales was primarily driven by higher 
unit sales volume related to our biosimilar product 
shipments, higher contract manufacturing shipments 
of drug substance production provided to our strategic 
partners, including Bioverativ, and an increase in 
inventory amounts written down as a result of excess, 
obsolescence, unmarketability or other reasons. 
These increases were partially offset by the impact 
from the spin-off of our hemophilia business on 
February 1, 2017, and the accelerated depreciation 
recorded in the second, third and fourth quarters of 
2016 as a result of our decision to cease 
manufacturing in Cambridge, MA. 

For 2016 compared to 2015, the increase in 
product cost of sales was primarily driven by costs 
noted below as well as increased contract 
manufacturing shipments and higher unit sales 
volume related to our biosimilars and hemophilia 
products, partially offset by favorable production costs 
and mix of products.

Product cost of sales for 2016 reflects the 

recognition of $45.5 million of accelerated 
depreciation as a result of the determination to cease 
manufacturing in Cambridge, MA and vacate our 
small-scale biologics manufacturing facility in 
Cambridge, MA and warehouse space in Somerville, 
MA.

65

 
 
Inventory amounts written down as a result of 

Research and Development

excess, obsolescence, unmarketability or other 
reasons totaled $76.9 million, $48.2 million and 
$41.9 million for the years ended December 31, 
2017, 2016 and 2015, respectively. Amounts written 
down during the year ended December 31, 2017, 
includes the impairment of $14.4 million related to 
the EC approved restrictions on the use of ZINBRYTA. 

For additional information on the Article 20 

Procedure of ZINBRYTA and resulting impairment of 
ZINBRYTA related assets, please read Note 20, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

Royalty Cost of Sales

For 2017 compared to 2016, the increase in 

royalty cost of sales was primarily driven by the 
recognition of royalties payable to Ionis on sales of 
SPINRAZA and higher royalties on sales of AVONEX 
and PLEGRIDY in the U.S., as described below. These 
increases were partially offset by the elimination of 
royalties payable on sales of hemophilia product 
resulting from the spin-off of our hemophilia business 
on February 1, 2017 and lower royalties on sales of 
TYSABRI resulting from the expiration of certain third-
party royalties.

For 2016 compared to 2015, the increase in 

royalty cost of sales was primarily driven by the 
increase in royalty rates payable to Sobi, increased 
sales of our hemophilia products and higher royalties 
on sales of AVONEX and PLEGRIDY in the U.S., 
partially offset by a decrease in TYSABRI royalties due 
to the expiration of certain third-party royalties.

On June 28, 2016, the U.S. Patent and 

Trademark Office issued to the Japanese Foundation 
for Cancer Research (JFCR) a patent related to 
recombinant interferon-beta protein. This patent, U.S. 
Patent No. 9,376,478, expires in June 2033. This 
patent was issued following an interference 
proceeding between JFCR and us. This patent is 
relevant to AVONEX and PLEGRIDY, and we will pay 
royalties in the mid-single digits in relation to this 
patent during the life of the patent. 

66

We support our drug discovery and development 

efforts through the commitment of significant 
resources to discovery, research and development 
programs and business development opportunities, 
particularly within our core and emerging growth 
areas. 

A significant amount of our research and 
development costs consist of indirect costs incurred 
in support of overall research and development 
activities and non-specific programs, including 
activities that benefit multiple programs, such as 
management costs, as well as depreciation, 
information technology and facility-based expenses. 
These costs are considered other research and 
development costs in the table above and are not 
allocated to a specific program or stage.

Research and development expense incurred in 

support of our marketed products includes costs 
associated with product lifecycle management 
activities including, if applicable, costs associated 
with the development of new indications for existing 
products. Late stage programs are programs in Phase 
3 development or in registration stage. Early stage 
programs are programs in Phase 1 or Phase 2 
development. Research and discovery represents 
costs incurred to support our discovery research and 
translational science efforts. Costs are reflected in 
the development stage based upon the program 
status when incurred. Therefore, the same program 
could be reflected in different development stages in 
the same year. For several of our programs, the 
research and development activities are part of our 
collaborative and other relationships. Our costs reflect 
our share of the total costs incurred.

For 2017 compared to 2016, the increase in 
research and development expense was primarily 
related to milestone and upfront expenses and costs 
incurred in connection with our early stage and late 
stage programs, partially offset by decreased costs 
incurred in connection with our marketed products.

For 2016 compared to 2015, the decrease in 

research and development expense was primarily 
related to a decrease in costs incurred in connection 
with our early stage programs, marketed products and 
other research and development costs. These 
decreases were partially offset by increased costs 
incurred in connection with our late stage and 
research and discovery programs.

We intend to continue committing significant 
resources to targeted research and development 
opportunities where there is a significant unmet need 
and where a drug candidate has the potential to be 
highly differentiated.

67

Milestone and Upfront Expenses included in 

Research and Development Expense

Research and development expense for 2017 

includes:

•  $300.0 million upfront payment made to BMS 

upon entering into our agreement to exclusively 
license BIIB092;

•  $60.0 million developmental milestone 

payment due to the former shareholders of 
iPierian, Inc. (iPierian), which became payable 
upon dosing of the first patient in the Phase 2 
PSP study for BIIB092;

•  $28.0 million upfront payment made to 

Alkermes upon entering into our agreement to 
exclusively license BIIB098, representing our 
share of BIIB098 development costs already 
incurred in 2017;

•  $50.0 million accrual based upon the expected 
continuation of our agreement with Alkermes to 
develop and exclusively license BIIB098; and

•  $25.0 million upfront payment recognized upon 
entering into a new collaboration agreement 
with Ionis to identify new ASO drug candidates 
for the treatment of SMA. 

Research and development expense for 2016 

includes:

•  $75.0 million license fee paid to Ionis as we 

exercised our option to develop and 
commercialize SPINRAZA from Ionis;

•  $50.0 million milestone payment to Eisai 

related to the initiation of a Phase 3 trial for 
E2609; and 

•  $20.0 million upfront payment recognized upon 

entering into a collaboration and alliance 
agreement with UPenn. 

Research and development expense for 2015 

includes:

•  $60.0 million recognized upon entering into our 
collaboration with Mitsubishi Tanabe Pharma 
Corporation;

•  $48.1 million recognized upon entering into our 

collaboration with AGTC;

•  $30.0 million in milestones recognized in 

relation to our collaboration agreements with 
Ionis; and 

•  $16.0 million paid to AbbVie related to 

milestones for the development of ZINBRYTA as 
a result of filing with the FDA and EMA during 
2015. 

68

These payments are classified as research and 
development expense as the programs they relate to 
had not achieved regulatory approval as of the 
payment date.

For additional information about these 

collaborations, please read Note 20, Collaborative and 
Other Relationships, to our consolidated financial 
statements included in this report.

Early Stage Programs

The increase in spending associated with our 
early stage programs for 2017 compared to 2016 
was primarily related to spending associated with the 
development of BIIB092 in AD and PSP pursuant to 
our license agreement with BMS, BIIB074 in 
trigeminal neuralgia (TGN) and BIIB076 in AD. These 
increases were partially offset by a reduction in costs 
resulting from our discontinuance of development of 
amiselimod in the third quarter of 2016.

The decrease in spending associated with our 

early stage programs for 2016 compared to 2015 
was primarily due to the advancement of our 
aducanumab program in AD to a late stage program in 
the third quarter of 2015, decreased costs incurred in 
connection with opicinumab in MS and the 
discontinuance of development of anti-TWEAK in lupus 
nephritis. These decreases were partially offset by 
increased costs of BIIB074 in TGN and increased 
costs associated with our discontinuance of 
development of amiselimod in the third quarter of 
2016.

Late Stage Programs

The increase in spending associated with our 

late stage programs for 2017 compared to 2016 was 
primarily related the increased costs associated with 
the development of aducanumab in AD and costs 
incurred associated with the development of E2609, a 
BACE inhibitor that was advanced to a late stage 
program in the fourth quarter of 2016. These 
increases were partially offset by advancement of 
SPINRAZA to marketed products following its approval 
in the U.S. in the fourth quarter of 2016.

The increase in spending associated with our 

late stage programs for 2016 compared to 2015 was 
primarily driven by costs incurred to advance our 
aducanumab program in AD, the increased costs 
incurred to advance our SPINRAZA program and the 
advancement of E2609 to a late stage program in the 
fourth quarter of 2016, partially offset by the approval 
of ZINBRYTA in the third quarter of 2016.

Marketed Products

Amortization of Acquired Intangible Assets

The decrease in spending associated with our 
marketed products for 2017 compared to 2016 was 
primarily due to a reduction in spending resulting from 
the spin-off of our hemophilia business on February 1, 
2017 and a reduction in spending related to 
TECFIDERA. These decreases were partially offset by 
increased spending related to SPINRAZA following its 
approval in the U.S. in the fourth quarter of 2016. 

The decrease in spending associated with our 
marketed products for 2016 compared to 2015 was 
primarily due to the discontinuance of development of 
TYSABRI and TECFIDERA in secondary primary MS in 
the third and fourth quarters of 2015, respectively, 
and decreased costs incurred in connection with our 
hemophilia products. These decreases were partially 
offset by the approvals of ZINBRYTA and SPINRAZA in 
the third and fourth quarters of 2016, respectively. 

Selling, General and Administrative

For 2017 compared to 2016, the decrease in 

selling, general and administrative expenses was 
primarily due to a reduction in operational spending 
resulting from the spin-off of our hemophilia business 
on February 1, 2017, the execution of targeted cost 
reduction initiatives and a reduction in costs resulting 
from the discontinuance of our TECFIDERA television 
advertising campaign in the second quarter of 2016. 
These decreases were offset by an increase in 
SPINRAZA commercialization costs and an increase in 
corporate giving.

For 2016 compared to 2015, the decrease in 
selling, general and administrative expenses reflect 
cost savings in connection with our corporate 
restructuring, which are described below under the 
heading "Restructuring, Business Transformation and 
Other Cost Savings Initiatives," partially offset by an 
increase in costs associated with developing 
commercial capabilities for ZINBRYTA and SPINRAZA.  

69

Our amortization expense is based on the 
economic consumption and impairment of intangible 
assets. Our most significant intangible assets are 
related to our TECFIDERA, AVONEX and TYSABRI 
products. Annually, during our long-range planning 
cycle, we perform an analysis of anticipated lifetime 
revenues of TECFIDERA, AVONEX and TYSABRI. This 
analysis is also updated whenever events or changes 
in circumstances would significantly affect the 
anticipated lifetime revenues of any of these 
products.

Our most recent long-range planning cycle was 

completed in the third quarter of 2017. The results of 
our TECFIDERA, AVONEX and TYSABRI analyses were 
impacted by changes in the estimated timing of the 
impact of other alternative MS formulations, including 
OCREVUS, which may compete with TYSABRI, 
TECFIDERA and AVONEX. The outcome of this most 
recent analysis did not result in a significant net 
change in our expected rate of amortization for 
acquired intangible assets. 

Based upon this most recent analysis, the 
estimated future amortization of acquired intangible 
assets for the next five years is expected to be as 
follows:

(In millions)

As of December 31,
2017

2018 ........................................... $
2019 ...........................................
2020 ...........................................
2021 ...........................................
2022 ...........................................

423.5

401.8

381.6

254.3

242.3

We monitor events and expectations regarding 

TECFIDERA License Rights

product performance. If new information indicates that 
the assumptions underlying our most recent analysis 
are substantially different than those utilized in our 
current estimates, our analysis would be updated and 
may result in a significant change in the anticipated 
lifetime revenues of the relevant products. The 
occurrence of an adverse event could substantially 
increase the amount of amortization expense 
associated with our acquired intangible assets as 
compared to previous periods or our current 
expectations, which may result in a significant 
negative impact on our future results of operations.

For 2017 compared to 2016, the increase in 

amortization of acquired intangible assets was 
primarily due to $444.2 million of amortization and 
impairment charges associated with our U.S. and rest 
of world licenses to Forward Pharma's intellectual 
property, including Forward Pharma's intellectual 
property related to TECFIDERA, acquired in the first 
quarter of 2017, as discussed further below. 
Amortization of acquired intangible assets for 2017 
also reflects the $31.2 million impairment of our 
acquired and in-licensed rights and patents intangible 
asset related to the Article 20 Procedure of 
ZINBRYTA.

For additional information on the Article 20 

Procedure of ZINBRYTA and resulting impairment of 
ZINBRYTA related assets, please read Note 20, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

For 2016 compared to 2015, amortization of 

acquired intangible assets was relatively consistent 
as our most recent analysis completed during the 
third quarter of 2016 resulted in no significant net 
change in our expected rate of amortization for 
acquired intangible assets. Amortization of acquired 
intangible assets for 2016 also reflects impairment 
charges recognized upon the termination of our 
collaboration agreements with Rodin Therapeutics, 
Inc. and Ataxion Inc., which resulted in impairment 
losses of $8.7 million and $3.5 million, respectively, 
related to the IPR&D assets recorded upon entering 
into the collaboration agreements.

Impairment charges related to intangible assets 

during 2015 were insignificant.

In January 2017 we entered into a settlement 

and license agreement with Forward Pharma. 
Pursuant to this agreement, we obtained U.S. and 
rest of world licenses to Forward Pharma's intellectual 
property, including Forward Pharma's intellectual 
property related to TECFIDERA. In exchange, we paid 
Forward Pharma $1.25 billion in cash. During the 
fourth quarter of 2016, we recognized a pre-tax 
charge of $454.8 million and in the first quarter of 
2017 we recognized an intangible asset of $795.2 
million related to this agreement. The pre-tax charge 
recognized in the fourth quarter of 2016 represented 
the fair value of our licenses to Forward Pharma’s 
intellectual property for the period April 2014, when 
we started selling TECFIDERA, through December 31, 
2016. The intangible asset represented the fair value 
of the U.S. and rest of world licenses to Forward 
Pharma’s intellectual property related to TECFIDERA 
revenues for the period January 2017, the month in 
which we entered into this agreement, through 
December 2020, the last month before royalty 
payments could first commence pursuant to this 
agreement.

We have two intellectual property disputes with 
Forward Pharma, one in the U.S. and one in the E.U., 
concerning intellectual property related to TECFIDERA. 
In March 2017 the U.S. intellectual property dispute 
was decided in our favor. Forward Pharma appealed to 
the U.S. Court of Appeals for the Federal Circuit and 
the appeal is pending. We evaluated the recoverability 
of the U.S. asset acquired from Forward Pharma and 
recorded an impairment charge in the first quarter of 
2017 to adjust the carrying value of the acquired U.S. 
asset to fair value reflecting the impact of the 
developments in the U.S. legal dispute. In January 
2018 the EPO announced its decision revoking 
Forward Pharma’s European Patent No. 2 801 355. 
Forward Pharma has stated that it expects to file an 
appeal to the Technical Board of Appeal of the EPO. 
Based upon our assessment of these rulings, we 
continue to amortize the remaining net book value of 
the U.S. and rest of world intangible assets in our 
consolidated statements of income utilizing an 
economic consumption model.

For additional information on our settlement and 

license agreement with Forward Pharma and related 
intangible assets, please read Note 7, Intangible 
Assets and Goodwill, to our consolidated financial 
statements included in this report. For additional 
information on these disputes, please read Note 21, 
Litigation, to our consolidated financial statements 
included in this report.

70

In Process Research & Development (IPR&D) related 

Acquired In-Process Research and Development

In May 2017 we completed an asset purchase of 

the Phase 3-ready candidate, BIIB093, from Remedy. 
In connection with the closing of this transaction, we 
made an upfront $120.0 million payment to Remedy, 
which was recorded as acquired in-process research 
and development in our consolidated statements of 
income as BIIB093 had not yet reached technological 
feasibility. For additional information on our 
transaction with Remedy, please read Note 2, 
Acquisitions, to our consolidated financial statements 
included in this report.

to Business Combinations

Overall, the value of our acquired IPR&D assets 

is dependent upon a number of variables, including 
estimates of future revenues and the effects of 
competition, the level of anticipated development 
costs and the probability and timing of successfully 
advancing a particular research program from a 
clinical trial phase to the next. We are continually 
reevaluating our estimates concerning these variables 
and evaluating industry data regarding the productivity 
of clinical research and the development 
process. Changes in our estimates of items may 
result in a significant change to our valuation of these 
assets.

We review amounts capitalized as acquired 
IPR&D for impairment at least annually, as of October 
31, and whenever events or changes in 
circumstances indicate to us that the carrying value of 
the assets might not be recoverable. Our most recent 
impairment assessment as of October 31, 2017, 
resulted in no impairments. Changes to clinical 
development plans, regulatory feedback received, life 
cycle management strategies and changes in program 
economics, including foreign currency exchange rates, 
are evaluated regularly. The field of developing 
treatments for forms of neuropathic pain, such as 
TGN, is highly competitive and can be affected by 
changes to expected market candidates and changes 
in timing and the clinical development of our product 
candidates. There can be no assurance that we will 
be able to successfully develop BIIB074 for the 
treatment of TGN or other indications, including our 
ability to confirm safety and efficacy based on data 
from clinical trials, or that a successfully developed 
therapy will be able to secure sufficient pricing in a 
competitive market. Changes in events and 
circumstances for these programs may have a 
material impact on the value of our related IPR&D.

For additional information on the impairment and 

amortization of acquired intangible assets, including 
our TECFIDERA settlement and license agreement, 
please read Note 7, Intangible Assets and Goodwill, to 
our consolidated financial statements included in this 
report.

71

Collaboration Profit (Loss) Sharing

Loss (Gain) on Fair Value Remeasurement of 

Contingent Consideration

Consideration payable for certain of our 

business combinations includes future payments that 
are contingent upon the occurrence of a particular 
event or events. We record an obligation for such 
contingent consideration payments at fair value on 
the acquisition date. We then revalue our contingent 
consideration obligations each reporting period. 
Changes in the fair value of our contingent 
consideration obligations, other than changes due to 
payments, are recognized as a (gain) loss on fair 
value remeasurement of contingent consideration in 
our consolidated statements of income.  

The loss on fair value remeasurement of 
contingent consideration for 2017 was primarily due 
to the increase in the probability of achieving certain 
developmental milestones based upon the 
progression of the underlying clinical programs.

The loss on fair value remeasurement of 
contingent consideration for 2016 was primarily due 
to changes in the probability of achieving certain 
developmental milestones based upon the 
progression of the underlying clinical programs and 
changes in the discount rate.

The loss on fair value remeasurement of 
contingent consideration for 2015 was primarily due 
to changes in the expected timing and probabilities of 
success related to the achievement of certain 
developmental milestones and in the discount rate.

Collaboration profit (loss) sharing includes our 
partner's 50% share of the profit or loss related to 
our biosimilars commercial agreement with Samsung 
Bioepis and our partner's 50% share of the co-
promotion profits or losses in the E.U. and Canada 
related to our collaboration agreement with AbbVie on 
the commercialization of ZINBRYTA. 

We began to recognize revenues on sales of 

biosimilars in the first quarter of 2016. For 2017 we 
shared collaboration profits and therefore recognized 
net expense of $111.0 million as compared to net 
expense of $15.1 million in the prior year comparative 
period. The increase in profit sharing expense for the 
comparative period was primarily due to increased 
collaboration profits resulting from increased 
biosimilar product sales.

We began to recognize revenues on sales of 
ZINBRYTA in the E.U. in the third quarter of 2016. For 
2017 we recognized net expense of $1.3 million to 
reflect AbbVie's 50% sharing of the net collaboration 
profits in the E.U. and Canada as compared to net 
income recognized of $4.9 million in the prior year 
comparative period, to reflect AbbVie's 50% sharing of 
the net collaboration losses in the E.U. and Canada. 
The increase in profit sharing expense for the 
comparative period was primarily due to increased 
collaboration profits resulting from increased 
ZINBRYTA product sales. 

We expect that the future sales growth of 
ZINBRYTA will be negatively impacted as a result of 
the EC approved restrictions on the use of ZINBRYTA. 
For additional information on our relationship with 
AbbVie, including information on the Article 20 
Procedure of ZINBRYTA and resulting impairment of 
ZINBRYTA related assets, please read Note 20, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

72

Restructuring, Business Transformation and Other 

Cost Saving Initiatives

2017 Corporate Strategy

In July 2017 we announced an updated strategic 

framework to optimize the value of our MS business 
while investing for the future across our core growth 
areas of MS and neuroimmunology, AD and dementia, 
Parkinson’s disease and movement disorders and 
neuromuscular diseases including SMA and ALS. We 
also plan to invest in emerging growth areas such as 
pain, ophthalmology, neuropsychiatry and acute 
neurology. 

We expect the continued performance of our 

commercial assets and the expiration of the 
contingent payments related to TECFIDERA, discussed 
further in the “Contractual Obligations and Off-Balance 
Sheet Arrangements” section of this report, to enable 
us to invest in and build an industry leading 
neuroscience pipeline. We view investment in growth 
as our top priority, but also recognize the value of 
opportunistically returning excess capital to 
shareholders through share repurchases.

In order to deliver positive results in the near 

term while investing in the next stages of our growth, 
we will focus on the following strategic priorities:

•  maximizing the resilience of our MS core 

business;

•  accelerating efforts in SMA as a significant new 

growth opportunity;

•  developing and expanding our neuroscience 

portfolio;

• 

focusing our capital allocation efforts to drive 
investment for future growth; and

•  creating a leaner and simpler operating model to 

streamline our operations and reallocate 
resources towards prioritized research and 
development and commercial value creation 
opportunities.

73

In October 2017, in connection with creating a 
leaner and simpler operating model, we approved a 
corporate restructuring program intended to 
streamline our operations and reallocate resources. 
We expect to make total non-recurring operating and 
capital expenditures of up to $170.0 million, primarily 
in 2018, and our goal is to redirect resources of up to 
$400.0 million annually by 2020 to prioritized 
research and development and other value creation 
opportunities.

For the year ended December 31, 2017, we 
recognized charges in our consolidated statements of 
income totaling $19.4 million related to this effort, of 
which $18.5 million is included in selling, general and 
administrative expense and $0.9 million is reflected 
as restructuring charges. These restructuring charges, 
which were substantially incurred and paid in 2017, 
were primarily related to severance.

2016 Organizational Changes and Cost Saving 

Initiatives

2016 Restructuring Charges

During the third quarter of 2016 we initiated cost 

saving measures primarily intended to realign our 
organizational structure due to the changes in roles 
and workforce resulting from our decision to spin-off 
our hemophilia business, and to achieve further 
targeted cost reductions. For the year ended 
December 31, 2016, we recognized charges totaling 
$17.7 million related to this effort, which are in 
addition to, and separate from, the 2015 restructuring 
charges described below. These amounts, which were 
substantially incurred and paid by the end of 2016, 
were primarily related to severance and are reflected 
in restructuring charges in our consolidated 
statements of income.

Cambridge, MA Manufacturing Facility

In June 2016 following an evaluation of our 
current and future manufacturing capabilities and 
capacity needs, we determined that we intended to 
cease manufacturing and vacate our 67,000 square 
foot small-scale biologics manufacturing facility in 
Cambridge, MA and close and vacate our 46,000 
square foot warehouse space in Somerville, MA.

In December 2016 we subleased our rights to 

the Cambridge, MA manufacturing facility to Brammer 
Bio MA, LLC (Brammer). Brammer also purchased 
from us certain manufacturing equipment, leasehold 
improvements and other assets in exchange for 
shares of Brammer common LLC interests and 
assumed manufacturing operations effective January 
1, 2017. In December 2016 we closed and vacated 
our warehouse space in Somerville, MA.

Our departure from these facilities shortened the 

TECFIDERA Litigation Settlement Charge

expected useful lives of certain leasehold 
improvements and other assets at these facilities. As 
a result, we recorded additional depreciation expense 
to reflect the assets' new shorter useful lives. For the 
year ended December 31, 2016, we recognized 
approximately $45.5 million of this additional 
depreciation, which was recorded as cost of sales in 
our consolidated statements of income.

In the fourth quarter of 2016 we also recognized 

charges totaling $7.4 million for severance costs 
related to certain employees separated from Biogen 
in connection with this transaction. These amounts 
were substantially incurred and paid by the end of first 
quarter of 2017 and are reflected in restructuring 
charges in our consolidated statements of income.

2015 Cost Saving Initiatives

2015 Restructuring Charges

In October 2015 we announced a corporate 

restructuring, which included the termination of 
certain pipeline programs and an 11% reduction in 
workforce. Under this restructuring, cash payments 
were estimated to total approximately $120.0 million, 
of which $15.9 million were related to previously 
accrued 2015 incentive compensation, resulting in 
net restructuring charges totaling approximately 
$102.0 million. These amounts were substantially 
paid by the end of 2016.

During the years ended December 31, 2016 and 

2015, we recognized $8.0 million and $93.4 million, 
respectively, of restructuring charges related to our 
2015 restructuring program in our consolidated 
statements of income. Our restructuring reserve is 
included in accrued expenses and other in our 
consolidated balance sheets.

The following table summarizes the charges and 

spending related to our 2015 restructuring program:

As described above under "Amortization of 
Acquired Intangible Assets - TECFIDERA License Rights,” 
in January 2017 we entered into a settlement and 
license agreement with Forward Pharma pursuant to 
which we obtained U.S. and rest of world licenses to 
Forward Pharma's intellectual property, including 
Forward Pharma's intellectual property related to 
TECFIDERA. In exchange, we paid Forward 
Pharma $1.25 billion in cash. During the fourth 
quarter of 2016, we recognized a pre-tax charge 
of $454.8 million and in the first quarter of 2017 we 
recognized an intangible asset of $795.2 
million related to this agreement. The pre-tax charge 
recognized in the fourth quarter of 2016 represented 
the fair value of our licenses to Forward Pharma’s 
intellectual property for the period April 2014, when 
we started selling TECFIDERA, through December 31, 
2016.

For additional information on our TECFIDERA 
settlement and license agreement, please read Note 
7, Intangible Assets and Goodwill, to our consolidated 
financial statements included in this report.

Workforce
Reduction

Pipeline
Programs

Total

4.9
(31.2)

(In millions)
Restructuring reserve
as of December 31,
2015 ......................... $ 33.7 $
Expense .....................
Payment.....................
Adjustments to
previous estimates,
net.............................
Restructuring reserve
as of December 31,
2016 ......................... $
Payment .....................
Restructuring reserve
as of December 31,
2017 ......................... $

2.2 $
(1.7)

(5.2)

3.6 $ 37.3
10.3
5.4
(40.2)
(9.0)

2.9

(2.3)

2.9 $
(2.9)

5.1
(4.6)

0.5 $ — $

0.5

74

Other Income (Expense), Net

Income Tax Provision

For 2017 compared to 2016, the change in other 

income (expense), net was primarily due to an 
increase in foreign currency exchange gains, an 
increase in interest income and a decrease in interest 
expense, partially offset by other than temporary 
impairments recorded on strategic investments and 
marketable debt securities during the year. 

Interest expense for the year ended December 

31, 2017, includes a net $5.2 million debt 
extinguishment charge recognized in November 2017 
upon redemption of our 6.875% Senior Notes due 
March 1, 2018. 

For additional information on this redemption 

and our outstanding indebtedness, please read Note 
12, Indebtedness, to our consolidated financial 
statements included in this report.

For 2016 compared to 2015, the change in other 

income (expense), net was primarily due to an 
increase in interest expense as a result of the 
issuance of our senior unsecured notes in the third 
quarter of 2015. This increase was partially offset by 
an increase in interest income on higher yields and 
cash, cash equivalents and marketable securities 
balances as well as a decrease in foreign exchange 
losses recognized during the year ended December 
31, 2016, compared to the prior year comparative 
period. 

Our effective tax rate fluctuates from year to 

year due to the global nature of our operations. The 
factors that most significantly impact our effective tax 
rate include changes in tax laws, variability in the 
allocation of our taxable earnings among multiple 
jurisdictions, the amount and characterization of our 
research and development expenses, the levels of 
certain deductions and credits, acquisitions and 
licensing transactions.

Our effective tax rate for 2017 compared to 
2016 increased primarily due to the effect of the 
2017 Tax Act and the impairment of prepaid tax 
assets related to our ZINBRYTA program.

On December 22, 2017, the 2017 Tax Act was 

signed into law and has resulted in significant 
changes to the U.S. corporate income tax system. 
The 2017 Tax Act includes a federal statutory rate 
reduction from 35% to 21%, the elimination or 
reduction of certain domestic deductions and credits, 
the Transition Toll Tax and other changes to taxation 
of foreign subsidiaries.

Changes in tax rates and tax laws are accounted 

for in the period of enactment. Therefore, during the 
year ended December 31, 2017, we recorded a 
charge totaling $1,173.6 million related to our current 
estimate of the provisions of the 2017 Tax Act, 
including a $989.6 million expense under the 
Transition Toll Tax. The Transition Toll Tax will be paid 
over an eight-year period, starting in 2018, and will 
not accrue interest.

75

Equity in Loss of Investee, Net of Tax

In February 2012 we entered into an agreement 

with Samsung Biologics, establishing an entity, 
Samsung Bioepis, to develop, manufacture and 
market biosimilar pharmaceuticals. We account for 
this investment under the equity method of 
accounting. We recognize our share of the results of 
operations related to our investment in Samsung 
Bioepis one quarter in arrears. 

During 2015 our share of losses exceeded the 

carrying value of our investment. We therefore 
suspended recognizing additional losses and will 
continue to do so unless we commit to providing 
additional funding. 

For additional information on this transaction, 

please read Note 20, Collaborative and Other 
Relationships, to our consolidated financial 
statements included in this report.

The 2017 Tax Act will provide us with flexibility in 

deploying our cash resources to advance our 
business interests. We expect that it will have a 
modest positive effect on our income tax rate in 2018 
and a potential incremental benefit thereafter.

Article 20 Procedure of ZINBRYTA

As a result of the CHMP's recommendation of 

restrictions on the use of ZINBRYTA, we impaired 
prepaid tax balances totaling $142.6 million. 
Offsetting these amounts was an unrecorded tax 
benefit related to certain ZINBRYTA related assets 
totaling approximately $93.8 million. For additional 
information on the Article 20 Procedure of ZINBRYTA 
and resulting impairment of ZINBRYTA related assets, 
please read Note 20, Collaborative and Other 
Relationships, to our consolidated financial 
statements included in this report.

Excluding the effect of the 2017 Tax Act and the 

ZINBRTYA impairments, our income tax rate would 
have decreased due to a lower percentage of our 
earnings being recognized in the U.S., a higher tax 
jurisdiction. The geographic split of our earnings was 
affected by milestone and upfront payments in the 
current year and the spin-off of our hemophilia 
business, partially offset by growth from the U.S. 
launch of SPINRAZA and increases in our revenues 
from anti-CD20 therapeutic programs in the U.S. In 
addition, in 2017 we earned a lower benefit from the 
orphan drug credit due to the FDA's approval of 
SPINRAZA.

Our effective tax rate for 2016 compared to 

2015 increased primarily due to a net state tax 
benefit in 2015 of $27.0 million resulting from the 
remeasurement of one of our uncertain tax positions 
and a higher relative percentage of our earnings being 
attributed to the U.S., a higher tax jurisdiction.

Accounting for Uncertainty in Income Taxes

For additional information on our uncertain tax 

positions and income tax rate reconciliation for 2017, 
2016 and 2015, please read Note 17, Income Taxes, 
to our consolidated financial statements included in 
this report.

76

Noncontrolling Interest

For 2017 compared to 2016, the change in net 
income (loss) attributable to noncontrolling interests, 
net of tax, was primarily related to a $150.0 million 
pre-tax upfront payment made to Neurimmune in 
exchange for a 15% reduction in royalty rates payable 
on products developed under the agreement, including 
on potential commercial sales of aducanumab. 

Financial Condition, Liquidity and Capital Resources

Our financial condition is summarized as follows:

(In millions, except percentages)
Financial assets:

Under the amended agreement, we also have an 

option that will expire in April 2018 to further reduce 
our royalty rates payable on products developed under 
the agreement, including on potential commercial 
sales of aducanumab, by an additional 5% in 
exchange for a $50.0 million payment to 
Neurimmune.

For 2016 compared to 2015, the change in net 
income (loss) attributable to noncontrolling interests, 
net of tax, was primarily related to a $60.0 million pre-
tax milestone payment made to Neurimmune in 2015.

For additional information on our collaboration 

arrangement with Neurimmune, please read Note 19, 
Investments in Variable Interest Entities, to our 
consolidated financial statements included in this 
report.

As of December 31,

2017

2016

% Change

2017 
compared to 
2016

Cash and cash equivalents ....................................................... $
Marketable securities — current ...............................................
Marketable securities — non-current .........................................

Total cash, cash equivalents and marketable securities .......... $

1,573.8 $
2,115.2
3,057.3
6,746.3 $

2,326.5
2,568.6
2,829.4
7,724.5

Borrowings:

Current portion of notes payable and other financing
arrangements .......................................................................... $
Notes payable and other financing arrangements........................

Total borrowings

Working Capital:

$

3.2 $

5,935.0
5,938.2 $

4.7
6,512.7
6,517.4

Current assets ......................................................................... $
Current liabilities......................................................................

Total working capital ............................................................. $

7,873.3 $
(3,368.2)
4,505.1 $

8,732.2
(3,419.9)
5,312.3

(32.4)%
(17.7)%
8.1 %
(12.7)%

(31.9)%
(8.9)%
(8.9)%

(9.8)%
(1.5)%
(15.2)%

77

 
For the year ended December 31, 2017, certain 

significant cash flows were as follows:

•  $4.6 billion in net cash flows provided by 

operating activities, net of: 

  $1.1 billion in total net payments for 

income taxes;

  $463.0 million in upfront and milestone 

payments to BMS, iPierian, Eisai, Alkermes 
and Ionis; and

•  $1.2 billion in contingent payments made to 
former shareholders of Fumapharm AG and 
holders of their rights;

•  $1.0 billion used for share repurchases;

•  $616.1 million used for purchases of property, 

plant and equipment; and

•  $82.0 million in milestone payments made to 

Samsung Bioepis and AbbVie.

  $454.8 million payment made to Forward 

Overview

Pharma for the litigation settlement charge 
that was accrued as of December 31, 
2016;

•  $1.4 billion used for share repurchases;

•  $1.2 billion in contingent payments made to 
former shareholders of Fumapharm AG and 
holders of their rights;

•  $867.4 million used for purchases of property, 

plant and equipment;

• 

$795.2 million payment made to Forward 
Pharma to license Forward Pharma's intellectual 
property, including Forward Pharma's intellectual 
property related to TECFIDERA;

•  $557.7 million payment made for the 

redemption of our 6.875% Senior Notes due 
March 1, 2018 prior to their maturity;

•  $302.7 million net cash contribution made in 
connection with the spin-off of our hemophilia 
business;

•  $295.0 million in upfront and milestone 

payments made to Remedy, Ionis and Samsung 
Bioepis; and

•  $132.4 million payment, net of tax, made to 

Neurimmune in exchange for a 15% reduction in 
royalty rates payable on products developed 
under the agreement, including on potential 
commercial sales of aducanumab.

For the year ended December 31, 2016, certain 

significant cash flows were as follows:

•  $4.6 billion in net cash flows provided by 

operating activities, net of:

  $1.6 billion in total net payments for 

income taxes;

  $75.0 million license fee payment made 

to Ionis; and

  $20.0 million upfront payment to UPenn;

We have historically financed our operating and 
capital expenditures primarily through cash flows 
earned through our operations. We expect to continue 
funding our current and planned operating 
requirements principally through our cash flows from 
operations, as well as our existing cash resources. 
We believe that our existing funds, when combined 
with cash generated from operations and our access 
to additional financing resources, if needed, are 
sufficient to satisfy our operating, working capital, 
strategic alliance, milestone payment, capital 
expenditure and debt service requirements for the 
foreseeable future. In addition, we may choose to 
opportunistically return cash to shareholders and 
pursue other business initiatives, including acquisition 
and licensing activities. We may, from time to time, 
also seek additional funding through a combination of 
new collaborative agreements, strategic alliances and 
additional equity and debt financings or from other 
sources should we identify a significant new 
opportunity.

Tax Reform

On December 22, 2017, the 2017 Tax Act was 

signed into law and has resulted in significant 
changes to the U.S. corporate income tax system.  

The 2017 Tax Act eliminates the deferral of U.S. 
income tax on the historical unrepatriated earnings by 
imposing the Transition Toll Tax, which is a one-time 
mandatory deemed repatriation tax on undistributed 
foreign earnings. The Transition Toll Tax is assessed 
on the U.S. shareholder's share of the foreign 
corporation's accumulated foreign earnings that have 
not previously been taxed. Earnings in the form of 
cash and cash equivalents will be taxed at a rate of 
15.5% and all other earnings will be taxed at a rate of 
8.0%. As of December 31, 2017, we have accrued 
income tax liabilities of $989.6 million under the 
Transition Toll Tax, of which $78.3 million is expected 
to be paid within one year. The Transition Toll Tax will 
be paid over an eight-year period, starting in 2018, 
and will not accrue interest. 

Of the total cash, cash equivalents and 

marketable securities at December 31, 2017, 
approximately $4.0 billion was generated in foreign 

78

jurisdictions and may now be deployed with greater 
flexibility to advance our business interests. 

portfolio that limits the amount of exposure as to 
institution, maturity and investment type. 

For additional information on certain risks that 

The net decrease in cash, cash equivalents and 

marketable securities at December 31, 2017, from 
December 31, 2016, was primarily due to the 
payment made to Forward Pharma in connection with 
our January 2017 settlement and license agreement, 
the payment made for the redemption of our 6.875% 
Senior Notes due March 1, 2018 prior to their 
maturity in November 2017, cash used for share 
repurchases, the net cash contribution made in 
connection with the spin-off of our hemophilia 
business in February 2017, net purchases of property, 
plant and equipment, upfront and milestone payments 
made to Remedy, Ionis and Samsung Bioepis and the 
payment to Neurimmune in exchange for a 15% 
reduction in royalty rates payable on products 
developed under the agreement, including on 
potential commercial sales of aducanumab. 

Borrowings

The following is a summary of our principal 

indebtedness as of December 31, 2017:

•  $1.5 billion aggregate principal amount of 2.90% 
Senior Notes due September 15, 2020, valued 
at 99.792% of par;

•  $1.0 billion aggregate principal amount of 

3.625% Senior Notes due September 15, 2022, 
valued at 99.920% of par;

•  $1.75 billion aggregate principal amount of 

4.05% Senior Notes due September 15, 2025, 
valued at 99.764% of par; and

•  $1.75 billion aggregate principal amount of 

5.20% Senior Notes due September 15, 2045, 
valued at 99.294% of par.

These senior unsecured notes were issued at a 

discount and are amortized as additional interest 
expense over the period from issuance through 
maturity.

In November 2017 we redeemed our 6.875% 

Senior Notes due March 1, 2018, with an aggregate 
principal amount of $550.0 million. For additional 
information on this redemption please read Note 12, 
Indebtedness, to our consolidated financial 
statements included in this report.

could negatively impact our consolidated financial 
position or future results of operations, please read 
Item 1A. Risk Factors and Item 7A. Quantitative and 
Qualitative Disclosures About Market Risk included in 
this report.

Share Repurchase Programs

In July 2016 our Board of Directors authorized 
our 2016 Share Repurchase Program to repurchase 
up to $5.0 billion of our common stock. This 
authorization does not have an expiration date. All 
share repurchases under this authorization will be 
retired. Under this authorization, we repurchased and 
retired 3.7 million and 3.3 million shares of our 
common stock during the years ended December 31, 
2017 and 2016, respectively, at a cost of $1.0 billion 
for each year. As of December 31, 2017, 
approximately $3.0 billion remains available for share 
repurchases under this authorization.

In May 2015 our Board of Directors authorized 
our 2015 Share Repurchase Program to repurchase 
up to $5.0 billion of our common stock. All share 
repurchases under this authorization were retired. Our 
2015 Share Repurchase Program was completed as 
of December 31, 2015. Under this authorization, we 
repurchased and retired 16.8 million shares of our 
common stock at a cost of $5.0 billion during the year 
ended December 31, 2015.

In February 2011 our Board of Directors 
authorized our 2011 Share Repurchase Program to 
repurchase up to 20.0 million shares of our common 
stock. Shares repurchased under this authorization 
have been principally used to offset common stock 
issuances under our share-based compensation 
plans. Our 2011 Share Repurchase Program was 
completed as of March 31, 2017. Under this 
authorization, we repurchased 1.2 million shares of 
our common stock at a cost of $365.4 million during 
the year ended December 31, 2017. We did not 
repurchase any shares of our common stock under 
this authorization during the years ended 
December 31, 2016 and 2015. 

Cash, Cash Equivalents and Marketable Securities

Until required for another use in our business, 

we typically invest our cash reserves in bank deposits, 
certificates of deposit, commercial paper, corporate 
notes, U.S. and foreign government instruments and 
other interest bearing marketable debt instruments in 
accordance with our investment policy. It is our policy 
to mitigate credit risk in our cash reserves and 
marketable securities by maintaining a well-diversified 

79

During the third quarter of 2015, we entered into 

Working Capital

a $1.0 billion, five-year senior unsecured revolving 
credit facility under which we are permitted to draw 
funds for working capital and general corporate 
purposes. The terms of the revolving credit facility 
include a financial covenant that requires us not to 
exceed a maximum consolidated leverage ratio. As of 
December 31, 2017, we had no outstanding 
borrowings and were in compliance with all covenants 
under this facility.

In connection with our 2006 distribution 
agreement with Fumedica, we issued notes totaling 
61.4 million Swiss Francs that are payable to 
Fumedica in varying amounts from June 2008 through 
June 2018. Our remaining note payable to Fumedica, 
payable in June 2018, had a carrying value of 3.1 
million Swiss Francs ($3.2 million) and 6.2 million 
Swiss Francs ($6.0 million) as of December 31, 2017 
and 2016, respectively.

For a summary of the fair values of our 

outstanding borrowings as of December 31, 2017 and 
2016, please read Note 8, Fair Value Measurements, 
to our consolidated financial statements included in 
this report.

Cash Flows

The following table summarizes our cash flow activity:

We define working capital as current assets less 

current liabilities. The change in working capital at 
December 31, 2017, from December 31, 2016, 
reflects a decrease in total current assets of $858.9 
million, partially offset by a decrease in current 
liabilities of $51.7 million. 

The decrease in total current assets was driven 

by a decrease in net cash, cash equivalents and 
marketable securities, as described above, partially 
offset by an increase in accounts receivable due to an 
increase in revenues and the timing of customer 
payments, including amounts due in connection with 
anti-CD20 therapeutic programs.

The decrease in total current liabilities primarily 

resulted from a reduction in taxes payable and 
accrued expenses primarily due to the payment of the 
$454.8 million charge that was accrued as of 
December 31, 2016, in relation to our settlement and 
license agreement with Forward Pharma, offset by an 
increase in the accrual of contingent payments 
related to FUMADERM and TECFIDERA (together, the 
Fumapharm Products) upon reaching $15.0 billion 
and $16.0 billion in total cumulative sales of 
Fumapharm Products in the fourth quarter of 2017.

(In millions, except percentages)
Net cash flows provided by operating
activities................................................ $
Net cash flows used in by investing
activities................................................ $
Net cash flows (used in) provided by
financing activities ................................. $

For the Years Ended
December 31,

2017

2016

2015

% Change

2017 
compared to 
2016

2016 
compared to 
2015

4,551.0 $

4,587.2 $

3,919.4

(0.8)%

17.0 %

(2,963.1) $

(2,484.8) $

(4,553.6)

19.2 %

(45.4)%

(2,380.0) $

(1,052.6) $

783.1

126.1 %

(234.4)%

Operating Activities

Cash flows from operating activities represent 

the cash receipts and disbursements related to all of 
our activities other than investing and financing 
activities. We expect cash provided from operating 
activities will continue to be our primary source of 
funds to finance operating needs and capital 
expenditures for the foreseeable future.

Operating cash flow is derived by adjusting our 

net income for:

•  Non-cash operating items such as depreciation 
and amortization, impairment charges, acquired 
in-process research and development and share-
based compensation;

•  Changes in operating assets and liabilities which 
reflect timing differences between the receipt 
and payment of cash associated with 
transactions and when they are recognized in 
results of operations; and

•  Changes associated with the fair value of 
contingent payments associated with our 
acquisitions of businesses and payments related 
to collaborations.

For 2017 compared to 2016, net cash flows 
provided by operations were relatively consistent. 
Higher sales and lower income tax payments were 
offset by the $454.8 million payment related to our 
settlement and license agreement with Forward 
Pharma, which had been accrued as of December 31, 
2016, and the timing of customer payments, including 

80

 
 
amounts due in connection with anti-CD20 
therapeutic programs.

Net income was lower in 2017, primarily due to 

the Transition Toll Tax under the 2017 Tax Act and 
higher depreciation and amortization.

For 2016 compared to 2015, the increase in 
cash provided by operating activities was primarily 
driven by higher net income, non-cash charges for 
depreciation and amortization, a comparative increase 
in accrued expenses and other liabilities, partially 
offset by a comparative increase in accounts 
receivable.

Investing Activities

For 2017 compared to 2016, the increase in net 

cash flows used in investing activities was primarily 
due to:

• 

the $795.2 million payment made to Forward 
Pharma to license Forward Pharma's intellectual 
property, including Forward Pharma's intellectual 
property related to TECFIDERA;

•  an increase in purchases of property, plant and 
equipment primarily related to the construction 
of our Solothurn, Switzerland facility;

•  $175.0 million in milestone payments made to 

Ionis and Samsung Bioepis; and

• 

the $120.0 million payment made to Remedy for 
the purchase of BIIB093.

These increases were partially offset by an 

increase in net proceeds of marketable securities.  

For 2016 compared to 2015, the decrease in 

net cash flows used in investing activities was 
primarily due to a decrease in net purchases of 
marketable securities and cash paid for the 
acquisition of Convergence Pharmaceuticals 
(Convergence) in February 2015, partially offset by an 
increase in the contingent consideration related to the 
Fumapharm AG acquisition. 

Financing Activities

For 2017 compared to 2016, the increase in net 

cash flows used in financing activities was primarily 
due to an increase in cash used for share 
repurchases, the payment made for the redemption of 
our 6.875% Senior Notes due March 1, 2018 prior to 
their maturity, the $302.7 million net cash 
contribution made in connection with the spin-off of 
our hemophilia business on February 1, 2017, and 
the net distributions to noncontrolling interest, 
including the payment made to Neurimmune in 
exchange for a 15% reduction in royalty rates payable 
on products developed under the agreement, including 
on potential commercial sales of aducanumab. 

For 2016 compared to 2015, the decrease in 
net cash flows provided by financing activities was 
primarily due to the issuance of our senior unsecured 
notes issued in the third quarter of 2015, partially 
offset by a decrease in the purchases of common 
stock.

Contractual Obligations and Off-Balance Sheet Arrangements

Contractual Obligations

The following table summarizes our contractual obligations as of December 31, 2017, excluding amounts 

related to uncertain tax positions, funding commitments, contingent development, regulatory and commercial 
milestone payments, TYSABRI contingent payments and contingent consideration related to our business 
combinations, as described below.

(In millions)
Non-cancellable operating leases (1), (2) . $
Long-term debt obligations (3) ................
Purchase and other obligations (4) ..........
Defined benefit obligation.......................

Total

428.5 $

9,430.0
1,657.1
91.8

Total contractual obligations ................. $ 11,607.4 $

Payments Due by Period

Less than
1 Year

1 to 3
Years

3 to 5
Years

After
5 Years

48.3 $

244.8
637.3
—
930.4 $

92.1 $

88.3 $

1,983.3
344.9
—

1,396.3
234.6
—

2,420.3 $

1,719.2 $

199.8
5,805.6
440.3
91.8
6,537.5

81

 
(1)  We lease properties and equipment for use in 

our operations. Amounts reflected within the 
table above detail future minimum rental 
commitments under non-cancelable operating 
leases as of December 31 for each of the 
periods presented. In addition to the minimum 
rental commitments, these leases may require 
us to pay additional amounts for taxes, 
insurance, maintenance and other operating 
expenses. 

(2)  Obligations are presented net of sublease 

income expected to be received for the vacated 
small-scale biologics manufacturing facility in 
Cambridge, MA, the vacated portion of our 
Weston, MA facility and other facilities 
throughout the world. 

(3)  Long-term debt obligations are primarily related 
to our Senior Notes, including principal and 
interest payments. 

(4)  Purchase and other obligations primarily includes 
our obligations to purchase direct materials, 
$989.6 million related to our current estimate of 
the impact of the 2017 Tax Act, $270.0 million 
in contractual commitments for the construction 
of our large-scale biologics manufacturing facility 
in Solothurn, Switzerland and $111.3 million 
related to the fair value of net liabilities on 
derivative contracts. 

TYSABRI Contingent Payments

In 2013 we acquired from Elan full ownership of 
all remaining rights to TYSABRI that we did not already 
own or control. Under the acquisition agreement, we 
are obligated to make contingent payments to Elan of 
18% on annual worldwide net sales up to $2.0 billion 
and 25% on annual worldwide net sales that exceed 
$2.0 billion. Royalty payments to Elan and other third 
parties are recognized as cost of sales in our 
consolidated statements of income. Elan was 
acquired by Perrigo Company plc (Perrigo) in 
December 2013, and Perrigo subsequently sold its 
rights to these payments to a third party effective 
January 2017.

Contingent Consideration related to Business 

Combinations

In connection with our acquisitions of 

Convergence, Stromedix, Inc. (Stromedix) and Biogen 
International Neuroscience GmbH (BIN), we agreed to 
make additional payments based upon the 
achievement of certain milestone events. 

As the acquisitions of Convergence, Stromedix 

and BIN occurred after January 1, 2009, we recorded 
the contingent consideration liabilities associated 
with these transactions at their fair value on the 

82

acquisition date and revalue these obligations each 
reporting period. We may pay up to approximately 
$1.1 billion in remaining milestones related to these 
acquisitions. For additional information on our 
acquisition of Convergence please read Note 2, 
Acquisitions, to our consolidated financial statements 
included in this report.

Fumapharm AG

In 2006 we acquired Fumapharm AG. As part of 

this acquisition we acquired FUMADERM and 
TECFIDERA (together, Fumapharm Products). We are 
required to make contingent payments to the former 
shareholders of Fumapharm AG or holders of their 
rights based on the attainment of certain cumulative 
sales levels of Fumapharm Products and the level of 
total net sales of Fumapharm Products in the prior 12-
month period, as defined in the acquisition 
agreement. 

During 2017 we paid $1.2 billion in contingent 

payments as we reached the $11.0 billion, $12.0 
billion, $13.0 billion and $14.0 billion cumulative 
sales levels related to the Fumapharm Products in the 
fourth quarter of 2016 and the first, second and third 
quarters of 2017, respectively, and accrued $600.0 
million upon reaching $15.0 billion and $16.0 billion 
in total cumulative sales of Fumapharm Products in 
the fourth quarter of 2017.

We will owe an additional $300.0 million 

contingent payment for every additional $1.0 billion in 
cumulative sales level of Fumapharm Products 
reached if the prior 12 months sales of the 
Fumapharm Products exceed $3.0 billion, until such 
time as the cumulative sales level reaches $20.0 
billion, at which time no further contingent payments 
shall be due. If the prior 12 months sales of 
Fumapharm Products are less than $3.0 billion, 
contingent payments remain payable on a decreasing 
tiered basis. These payments will be accounted for as 
an increase to goodwill as incurred, in accordance 
with the accounting standard applicable to business 
combinations when we acquired Fumapharm. Any 
portion of the payment that is tax deductible will be 
recorded as a reduction to goodwill. Payments are due 
within 60 days following the end of the quarter in 
which the applicable cumulative sales level has been 
reached.

Contingent Development, Regulatory and 

Commercial Milestone Payments

Based on our development plans as of 

December 31, 2017, we could make potential future 
milestone payments to third parties of up to 
approximately $4.2 billion, including approximately 
$0.7 billion in development milestones, approximately 
$1.5 billion in regulatory milestones and 
approximately $2.0 billion in commercial milestones 

as part of our various collaborations, including 
licensing and development programs. Payments under 
these agreements generally become due and payable 
upon achievement of certain development, regulatory 
or commercial milestones. Because the achievement 
of these milestones was not considered probable as 
of December 31, 2017, such contingencies have not 
been recorded in our financial statements. Amounts 
related to contingent milestone payments are not 
considered contractual obligations as they are 
contingent on the successful achievement of certain 
development, regulatory approval and commercial 
milestones. 

Provided various development, regulatory or 

commercial milestones are achieved, we anticipate 
that we may pay approximately $110.0 million of 
milestone payments in 2018. 

Other Funding Commitments

As of December 31, 2017, we have several on-
going clinical studies in various clinical trial stages. 
Our most significant clinical trial expenditures are to 
CROs. The contracts with CROs are generally 
cancellable, with notice, at our option. We have 
recorded accrued expenses of approximately $40.0 
million in our consolidated balance sheet for 
expenditures incurred by CROs as of December 31, 
2017. We have approximately $460.0 million in 
cancellable future commitments based on existing 
CRO contracts as of December 31, 2017.

Tax Related Obligations

We exclude liabilities pertaining to uncertain tax 
positions from our summary of contractual obligations 
as we cannot make a reliable estimate of the period 
of cash settlement with the respective taxing 
authorities. As of December 31, 2017, we have 
approximately $77.3 million of net liabilities 
associated with uncertain tax positions. 

As of December 31, 2017, we have accrued 
income tax liabilities of $989.6 million under the 
Transition Toll Tax, of which $78.3 million is expected 
to be paid within one year. The Transition Toll Tax will 
be paid over an eight-year period, starting in 2018, 
and will not accrue interest.

Other Off-Balance Sheet Arrangements

We do not have any relationships with entities 

often referred to as structured finance or special 
purpose entities that were established for the 
purpose of facilitating off-balance sheet 
arrangements. As such, we are not exposed to any 
financing, liquidity, market or credit risk that could 
arise if we had engaged in such relationships. We 
consolidate variable interest entities if we are the 
primary beneficiary.

Legal Matters

For a discussion of legal matters as of 

December 31, 2017, please read Note 21, Litigation, 
to our consolidated financial statements included in 
this report.

Critical Accounting Estimates

The preparation of our consolidated financial 
statements, which have been prepared in accordance 
with accounting principles generally accepted in the 
U.S. (U.S. GAAP), requires us to make estimates, 
judgments and assumptions that may affect the 
reported amounts of assets, liabilities, equity, 
revenues and expenses and related disclosure of 
contingent assets and liabilities. On an on-going basis 
we evaluate our estimates, judgments and 
methodologies. We base our estimates on historical 
experience and on various other assumptions that we 
believe are reasonable, the results of which form the 
basis for making judgments about the carrying values 
of assets, liabilities and equity and the amount of 
revenues and expenses. Actual results may differ 
from these estimates under different assumptions or 
conditions. Other significant accounting policies are 
outlined in Note 1, Summary of Significant Accounting 
Policies, to our consolidated financial statements 
included in this report. 

Revenue Recognition and Related Allowances

We recognize revenues when all of the following 

criteria are met: persuasive evidence of an 
arrangement exists; delivery has occurred or services 
have been rendered; our price to the customer is fixed 
or determinable; and collectability is reasonably 
assured. For additional information on the new 
accounting standard for revenues from contracts with 
customers please read Note 1, Summary of 
Significant Accounting Policies: New Accounting 
Pronouncements, to our consolidated financial 
statements included in this report.

Product Revenues

Revenues from product sales are recognized 

when title and risk of loss have passed to the 
customer, which is typically upon delivery. Product 
revenues are recorded net of applicable reserves for 
discounts and allowances. The timing of distributor 
orders and shipments can cause variability in 
earnings.

Reserves for Discounts and Allowances

Revenues from product sales are recorded net 
of reserves established for applicable discounts and 
allowances, including those associated with the 
implementation of pricing actions in certain of the 
international markets in which we operate. These 
reserves are based on estimates of the amounts 

83

earned or to be claimed on the related sales and are 
classified as reductions of accounts receivable (if the 
amount is payable to our customer) or a liability (if the 
amount is payable to a party other than our 
customer). Our estimates take into consideration our 
historical experience, current contractual and 
statutory requirements, specific known market events 
and trends, industry data and forecasted customer 
buying and payment patterns. Actual amounts may 
ultimately differ from our estimates. If actual results 
vary, we adjust these estimates, which could have an 
effect on earnings in the period of adjustment. 

In addition to the discounts and rebates 

described above and classified as a reduction of 
revenue, we also maintain certain customer service 
contracts with distributors and other customers in the 
distribution channel that provide us with inventory 
management, data and distribution services, which 
are generally reflected as a reduction of revenue. To 
the extent we can demonstrate a separable benefit 
and fair value for these services we classify these 
payments within selling, general and administrative 
expenses.

Concentrations of Credit Risk

The majority of our accounts receivable arise 
from product sales in the U.S. and Europe and are 
primarily due from wholesale distributors, public 
hospitals and other government entities. We monitor 
the financial performance and creditworthiness of our 
customers so that we can properly assess and 
respond to changes in their credit profile. We continue 
to monitor these conditions, including the volatility 
associated with international economies and the 
relevant financial markets, and assess their possible 
impact on our business. Credit and economic 
conditions in the E.U. continue to remain uncertain, 
which has, from time to time, led to longer collection 
periods for our accounts receivable and greater 
collection risk in certain countries. 

 Where our collections continue to be subject to 
significant payment delays due to government funding 
and reimbursement practices and a portion of these 
receivables are routinely being collected beyond our 
contractual payment terms and over periods in excess 
of one year, we have discounted our receivables and 
reduced related revenues based on the period of time 
that we estimate those amounts will be paid, to the 
extent such period exceeds one year, using the 
country’s market-based borrowing rate for such 
period. The related receivables are classified at the 
time of sale as non-current assets.

To date, we have not experienced any significant 

losses with respect to the collection of our accounts 
receivable. If economic conditions worsen and/or the 
financial condition of our customers were to further 

deteriorate, our risk of collectability may increase, 
which may result in additional allowances and/or 
significant bad debts.

For additional information on our concentration 
of credit risk associated with our accounts receivable 
balances, please read the subsection entitled “Credit 
Risk” in Item 7A. Quantitative and Qualitative 
Disclosures About Market Risk included in this report.

Capitalization of Inventory Costs

We capitalize inventory costs associated with 
our products prior to regulatory approval, when, based 
on management’s judgment, future commercialization 
is considered probable and the future economic 
benefit is expected to be realized. We consider 
numerous attributes in evaluating whether the costs 
to manufacture a particular product should be 
capitalized as an asset. We assess the regulatory 
approval process and where the particular product 
stands in relation to that approval process, including 
any known safety or efficacy concerns, potential 
labeling restrictions and other impediments to 
approval. We evaluate our anticipated research and 
development initiatives and constraints relating to the 
product and the indication in which it will be used. We 
consider our manufacturing environment including our 
supply chain in determining logistical constraints that 
could hamper approval or commercialization. We 
consider the shelf life of the product in relation to the 
expected timeline for approval and we consider patent 
related or contract issues that may prevent or delay 
commercialization. We also base our judgment on the 
viability of commercialization, trends in the 
marketplace and market acceptance criteria. Finally, 
we consider the reimbursement strategies that may 
prevail with respect to the product and assess the 
economic benefit that we are likely to realize. We 
expense previously capitalized costs related to pre-
approval inventory upon a change in such judgment, 
due to, among other potential factors, a denial or 
significant delay of approval by necessary regulatory 
bodies. All changes in judgment in relation to pre-
approval inventory have historically been insignificant.

Acquired Intangible Assets, including In-process 

Research and Development (IPR&D)

When we purchase a business, the acquired 
IPR&D is measured at fair value, capitalized as an 
intangible asset and tested for impairment at least 
annually, as of October 31, until commercialization, 
after which time the IPR&D is amortized over its 
estimated useful life. If we acquire an asset or group 
of assets that do not meet the definition of a 
business under applicable accounting standards, the 
acquired IPR&D is expensed upon its acquisition 
date. Future costs to develop these assets are 
recorded to research and development expense as 
they are incurred.

84

We have acquired, and expect to continue to 

Impairment and Amortization of Long-lived Assets 

acquire, intangible assets through the acquisition of 
biotechnology companies or through the consolidation 
of variable interest entities. These intangible assets 
primarily consist of technology associated with human 
therapeutic products and IPR&D product candidates. 
When significant identifiable intangible assets are 
acquired, we generally engage an independent third-
party valuation firm to assist in determining the fair 
values of these assets as of the acquisition date. 
Management will determine the fair value of less 
significant identifiable intangible assets acquired. 
Discounted cash flow models are typically used in 
these valuations, and these models require the use of 
significant estimates and assumptions including but 
not limited to:

•  estimating the timing of and expected costs to 

complete the in-process projects;

•  projecting regulatory approvals;

•  estimating future cash flows from product sales 

resulting from completed products and in 
process projects; and

•  developing appropriate discount rates and 

probability rates by project.

We believe the fair values assigned to the 

intangible assets acquired are based upon 
reasonable estimates and assumptions given 
available facts and circumstances as of the 
acquisition dates.

If these projects are not successfully developed, 

the sales and profitability of the company may be 
adversely affected in future periods. Additionally, the 
value of the acquired intangible assets may become 
impaired. We believe that the foregoing assumptions 
used in the IPR&D analysis were reasonable. No 
assurance can be given that the underlying 
assumptions used to estimate expected project sales, 
development costs or profitability, or the events 
associated with such projects, will transpire as 
estimated.

Certain IPR&D programs have a fair value that is 
not significantly in excess of carrying value, including 
our program for the treatment of TGN. Such programs 
could become impaired if assumptions used in 
determining the fair value change.

and Accounting for Goodwill

Long-lived Assets Other than Goodwill

Long-lived assets to be held and used include 
property, plant and equipment as well as intangible 
assets, including IPR&D and trademarks. Property, 
plant and equipment are reviewed for impairment 
whenever events or changes in circumstances 
indicate that the carrying amount of the assets may 
not be recoverable. We review our intangible assets 
with indefinite lives for impairment annually, as of 
October 31, and whenever events or changes in 
circumstances indicate that the carrying value of an 
asset may not be recoverable.

When performing our impairment assessment, 

we calculate the fair value using the same 
methodology as described above under "Acquired 
Intangible Assets, including In-process Research and 
Development (IPR&D)". If the carrying value of our 
acquired IPR&D exceeds its fair value, then the 
intangible asset is written-down to its fair value. 
Certain IPR&D programs have a fair value that is not 
significantly in excess of carrying value, including 
treatments for forms of neuropathic pain, such as 
TGN. Such programs could become impaired if 
assumptions used in determining the fair value 
change.

Our most significant intangible assets are our 

acquired and in-licensed rights and patents and 
developed technology. Acquired and in-licensed rights 
and patents primarily relate to obtaining the fair value 
of the U.S. and rest of world licenses to Forward 
Pharma's intellectual property, including Forward 
Pharma's intellectual property related to TECFIDERA, 
and our acquisition of all remaining rights to TYSABRI 
from Elan. Developed technology primarily relates to 
our AVONEX product, which was recorded in 
connection with the merger of Biogen, Inc. and IDEC 
Pharmaceuticals Corporation in 2003. We amortize 
the intangible assets related to TECFIDERA, TYSABRI 
and AVONEX using the economic consumption method 
based on revenues generated from the products 
underlying the related intangible assets. An analysis 
of the anticipated lifetime revenues of TECFIDERA, 
TYSABRI and AVONEX is performed annually during 
our long-range planning cycle, which is generally 
updated in the third quarter of each year, and 
whenever events or changes in circumstances would 
significantly affect the anticipated lifetime revenues of 
TECFIDERA, TYSABRI or AVONEX.

For additional information on the impairment 

charges related to our long-lived assets during 2017 
and 2016, please read Note 7, Intangible Assets and 
Goodwill, to our consolidated financial statements 
included in this report. Impairment charges related to 
our long-lived assets during 2015 were insignificant. 

85

Goodwill

Goodwill relates largely to amounts that arose in 

connection with the merger of Biogen, Inc. and IDEC 
Pharmaceuticals Corporation in 2003 and amounts 
that are being paid in connection with the acquisition 
of Fumapharm AG. Our goodwill balances represent 
the difference between the purchase price and the fair 
value of the identifiable tangible and intangible net 
assets when accounted for using the purchase 
method of accounting.

We assess our goodwill balance within our 
single reporting unit annually, as of October 31, and 
whenever events or changes in circumstances 
indicate the carrying value of goodwill may not be 
recoverable to determine whether any impairment in 
this asset may exist and, if so, the extent of such 
impairment. We compare the fair value of our 
reporting unit to its carrying value. If the carrying 
value of the net assets assigned to the reporting unit 
exceeds the fair value of our reporting unit, we would 
record an impairment loss equal to the difference. 

We completed our required annual impairment 
test in the fourth quarters of 2017, 2016 and 2015, 
respectively, and determined in each of those periods 
that the carrying value of goodwill was not impaired. 
In each year, the fair value of our reporting unit, which 
includes goodwill, was significantly in excess of the 
carrying value of our reporting unit.

Investments, including Fair Value Measures and 

Impairments

We invest in various types of securities, 
including short-term and long-term marketable 
securities, principally corporate notes, government 
securities including government sponsored enterprise 
mortgage-backed securities and credit card and auto 
loan asset-backed securities, in which our excess 
cash balances are invested.

In accordance with the accounting standard for 

fair value measurements, we have classified our 
financial assets as Level 1, 2 or 3 within the fair value 
hierarchy. Fair values determined by Level 1 inputs 
utilize quoted prices (unadjusted) in active markets for 
identical assets that we have the ability to access. 
Fair values determined by Level 2 inputs utilize data 
points that are observable such as quoted prices, 
interest rates, yield curves and foreign currency spot 
rates. Fair values determined by Level 3 inputs utilize 
unobservable data points for the asset.

As noted in Note 8, Fair Value Measurements, to 
our consolidated financial statements included in this 
report, a majority of our financial assets have been 
classified as Level 2. These assets have been initially 
valued at the transaction price and subsequently 
valued utilizing third-party pricing services. The pricing 
services use many observable market inputs to 
determine value, including reportable trades, 
benchmark yields, credit spreads, broker/dealer 
quotes, bids, offers, current spot rates and other 
industry and economic events. We validate the prices 
provided by our third-party pricing services by 
understanding the models used, obtaining market 
values from other pricing sources and analyzing 
pricing data in certain instances.

Impairment

We conduct periodic reviews to identify and 
evaluate each investment that has an unrealized loss, 
in accordance with the meaning of other-than-
temporary impairment and its application to certain 
investments. An unrealized loss exists when the 
current fair value of an individual security is less than 
its amortized cost basis. Unrealized losses on 
available-for-sale debt securities that are determined 
to be temporary, and not related to credit loss, are 
recorded, net of tax, in accumulated other 
comprehensive income.

For available-for-sale debt securities with 
unrealized losses, management performs an analysis 
to assess whether we intend to sell or whether we 
would more likely than not be required to sell the 
security before the expected recovery of the 
amortized cost basis. Where we intend to sell a 
security, or may be required to do so, the security’s 
decline in fair value is deemed to be other-than-
temporary and the full amount of the unrealized loss 
is reflected within earnings as an impairment loss.

Regardless of our intent to sell a security, we 

perform additional analysis on all securities with 
unrealized losses to evaluate losses associated with 
the creditworthiness of the security. Credit losses are 
identified where we do not expect to receive cash 
flows sufficient to recover the amortized cost basis of 
a security and are reflected within earnings as an 
impairment loss.

Share-Based Compensation

We make certain assumptions in order to value 

and record expense associated with awards made 
under our share-based compensation arrangements. 
Changes in these assumptions may lead to variability 
with respect to the amount of expense we recognize 
in connection with share-based payments.

86

Determining the appropriate valuation model and 

Restructuring Charges

related assumptions requires judgment, and includes 
estimating the expected market price of our stock on 
vesting date and stock price volatility as well as the 
term of the expected awards. Determining the 
appropriate amount to expense based on the 
anticipated achievement of performance targets 
requires judgment, including forecasting the 
achievement of future financial targets. The estimate 
of expense is revised periodically based on the 
probability of achieving the required performance 
targets and adjustments are made throughout the 
term as appropriate. The cumulative impact of any 
revision is reflected in the period of change.

We also estimate forfeitures over the requisite 

service period when recognizing share-based 
compensation expense based on historical rates and 
forward-looking factors. These estimates are adjusted 
to the extent that actual forfeitures differ, or are 
expected to materially differ, from our estimates.

Contingent Consideration

For acquisitions completed before January 1, 
2009, we record contingent consideration resulting 
from a business combination when the contingency is 
resolved. For acquisitions completed after January 1, 
2009, we record contingent consideration resulting 
from a business combination at its fair value on the 
acquisition date. Each reporting period thereafter, we 
revalue these obligations and record increases or 
decreases in their fair value as an adjustment to 
contingent consideration expense in our consolidated 
statements of income. Changes in the fair value of 
the contingent consideration obligations can result 
from changes to one or multiple inputs including 
adjustments to the discount rates and achievement 
and timing of any cumulative sales-based and 
development milestones, or changes in the probability 
of certain clinical events and changes in the assumed 
probability associated with regulatory approval. These 
fair value measurements represent Level 3 
measurements as they are based on significant 
inputs not observable in the market.

Significant judgment is employed in determining 
the appropriateness of these assumptions as of the 
acquisition date and for each subsequent period. 
Accordingly, changes in assumptions described above, 
could have a material impact on the amount of 
contingent consideration expense we record in any 
given period.

We have made estimates and judgments 
regarding the amount and timing of our restructuring 
expense and liability, including current and future 
period termination benefits, pipeline program 
termination costs and other exit costs to be incurred 
when related actions take place. Severance and other 
related costs are reflected in our consolidated 
statements of income as a component of total 
restructuring charges incurred. Actual results may 
differ from these estimates.

Income Taxes

We prepare and file income tax returns based on 

our interpretation of each jurisdiction’s tax laws and 
regulations. In preparing our consolidated financial 
statements, we estimate our income tax liability in 
each of the jurisdictions in which we operate by 
estimating our actual current tax expense together 
with assessing temporary differences resulting from 
differing treatment of items for tax and financial 
reporting purposes. These differences result in 
deferred tax assets and liabilities, which are included 
in our consolidated balance sheets. Significant 
management judgment is required in assessing the 
realizability of our deferred tax assets. In performing 
this assessment, we consider whether it is more likely 
than not that some portion or all of the deferred tax 
assets will not be realized. The ultimate realization of 
deferred tax assets is dependent upon the generation 
of future taxable income during the periods in which 
those temporary differences become deductible. In 
making this determination, under the applicable 
financial accounting standards, we are allowed to 
consider the scheduled reversal of deferred tax 
liabilities, projected future taxable income and the 
effects of tax planning strategies. Our estimates of 
future taxable income include, among other items, our 
estimates of future income tax deductions related to 
the exercise of stock options. In the event that actual 
results differ from our estimates, we adjust our 
estimates in future periods and we may need to 
establish a valuation allowance, which could 
materially impact our consolidated financial position 
and results of operations.

All tax effects associated with intercompany 
transfers of assets within our consolidated group, 
both current and deferred, are recorded as a prepaid 
tax or deferred charge and recognized through our 
consolidated statements of income when the asset 
transferred is sold to a third-party or otherwise 
recovered through amortization of the asset's 
remaining economic life. If the asset transferred 
becomes impaired, for example through the 
obsolescence of inventory or the discontinuation of a 
research program, we will expense any remaining 
deferred charge or prepaid tax. As of December 31, 

87

income tax liabilities of $989.6 million under the 
Transition Toll Tax, of which $78.3 million is expected 
to be paid within one year. The Transition Toll Tax will 
be paid over an eight-year period, starting in 2018, 
and will not accrue interest. 

New Accounting Standards

For a discussion of new accounting standards 

and their expected impact on our consolidated 
financial statements or disclosures, please read 
Note 1, Summary of Significant Accounting Policies, to 
our consolidated financial statements included in this 
report.

Item 7A.      Quantitative and Qualitative 
Disclosures About Market Risk

Market Risk

We are subject to certain risks that may affect 
our results of operations, cash flows and fair values 
of assets and liabilities, including volatility in foreign 
currency exchange rates, interest rate movements, 
pricing pressures worldwide and weak economic 
conditions in the foreign markets in which we operate. 
We manage the impact of foreign currency exchange 
rates and interest rates through various financial 
instruments, including derivative instruments such as 
foreign currency forward contracts, interest rate lock 
contracts and interest rate swap contracts. We do not 
enter into financial instruments for trading or 
speculative purposes. The counterparties to these 
contracts are major financial institutions, and there is 
no significant concentration of exposure with any one 
counterparty.

Foreign Currency Exchange Risk

Our results of operations are subject to foreign 
currency exchange rate fluctuations due to the global 
nature of our operations. We have operations or 
maintain distribution relationships in the U.S., Europe, 
Canada, Asia, and Central and South America. In 
addition, we recognize our share of pre-tax co-
promotion profits on RITUXAN in Canada. As a result, 
our consolidated financial position, results of 
operations and cash flows can be affected by market 
fluctuations in foreign currency exchange rates, 
primarily with respect to the Euro, British pound 
sterling, Canadian dollar, Swiss franc, Danish krone 
and Japanese yen.

2017, total deferred charges and prepaid taxes were 
$617.7 million. For additional information on the new 
accounting standard related to tax effects associated 
with intercompany transfers of assets within our 
consolidated group, please read Note 1, Summary of 
Significant Accounting Policies: New Accounting 
Pronouncements, to our consolidated financial 
statements included in this report.

We account for uncertain tax positions using a 
“more-likely-than-not” threshold for recognizing and 
resolving uncertain tax positions. We evaluate 
uncertain tax positions on a quarterly basis and 
consider various factors that include, but are not 
limited to, changes in tax law, the measurement of tax 
positions taken or expected to be taken in tax returns, 
the effective settlement of matters subject to audit, 
information obtained during in process audit activities 
and changes in facts or circumstances related to a 
tax position. We adjust the level of the liability to 
reflect any subsequent changes in the relevant facts 
surrounding the uncertain positions. Our liabilities for 
uncertain tax positions can be relieved only if the 
contingency becomes legally extinguished, through 
either payment to the taxing authority or the expiration 
of the statute of limitations, the recognition of the 
benefits associated with the position meet the “more-
likely-than-not” threshold or the liability becomes 
effectively settled through the examination process. 
We consider matters to be effectively settled once the 
taxing authority has completed all of its required or 
expected examination procedures, including all 
appeals and administrative reviews, we have no plans 
to appeal or litigate any aspect of the tax position, 
and we believe that it is highly unlikely that the taxing 
authority would examine or re-examine the related tax 
position. We also accrue for potential interest and 
penalties related to unrecognized tax benefits in 
income tax expense.

We earn a significant amount of our operating 
income outside the U.S. As a result, a portion of our 
cash, cash equivalents and marketable securities are 
held by foreign subsidiaries. 

On December 22, 2017, the 2017 Tax Act was 

signed into law and has resulted in significant 
changes to the U.S. corporate income tax system.  

The 2017 Tax Act eliminates the deferral of U.S. 
income tax on the historical unrepatriated earnings by 
imposing the Transition Toll Tax, which is a one-time 
mandatory deemed repatriation tax on undistributed 
foreign earnings. The Transition Toll Tax is assessed 
on the U.S. shareholder's share of the foreign 
corporation's accumulated foreign earnings that have 
not previously been taxed. Earnings in the form of 
cash and cash equivalents will be taxed at a rate of 
15.5% and all other earnings will be taxed at a rate of 
8.0%. As of December 31, 2017, we have accrued 

88

While the financial results of our global activities 

Balance Sheet Risk Management Hedging Program

are reported in U.S. dollars, the functional currency 
for most of our foreign subsidiaries is their respective 
local currency. Fluctuations in the foreign currency 
exchange rates of the countries in which we do 
business will affect our operating results, often in 
ways that are difficult to predict. In particular, as the 
U.S. dollar strengthens versus other currencies, the 
value of the non-U.S. revenues will decline when 
reported in U.S. dollars. The impact to net income as 
a result of a strengthening U.S. dollar will be partially 
mitigated by the value of non-U.S. expenses, which 
will also decline when reported in U.S. dollars. As the 
U.S. dollar weakens versus other currencies, the 
value of the non-U.S. revenues and expenses will 
increase when reported in U.S. dollars.

We have established revenue and operating 
expense hedging and balance sheet risk management 
programs to protect against volatility of future foreign 
currency cash flows and changes in fair value caused 
by volatility in foreign currency exchange rates.

In June 2016 the U.K. voted in a referendum to 
voluntarily depart from the E.U., known as Brexit, and 
in March 2017, the U.K. formally started the process 
for the U.K. to leave the E.U. The macroeconomic 
impact on our results of operations from these 
developments remains unknown. To date, the foreign 
currency exchange impact has been insignificant 
since we hedged the balance sheet foreign currency 
exchange risk. 

Revenue and Operating Expense Hedging Program

Our foreign currency hedging program is 

designed to mitigate, over time, a portion of the 
impact resulting from volatility in exchange rate 
changes on revenues and operating expenses. We 
use foreign currency forward contracts to manage 
foreign currency risk, with the majority of our forward 
contracts used to hedge certain forecasted revenue 
and operating expense transactions denominated in 
foreign currencies in the next 21 months. We do not 
engage in currency speculation. For a more detailed 
disclosure of our revenue and operating expense 
hedging program, please read Note 10, Derivative 
Instruments, to our consolidated financial statements 
included in this report.  

Our ability to mitigate the impact of exchange 

rate changes on revenues and net income diminishes 
as significant exchange rate fluctuations are 
sustained over extended periods of time. In particular, 
devaluation or significant deterioration of foreign 
currency exchange rates are difficult to mitigate and 
likely to negatively impact earnings. The cash flows 
from these contracts are reported as operating 
activities in our consolidated statements of cash 
flows.

89

We also use forward contracts to mitigate the 
foreign currency exposure related to certain balance 
sheet items. The primary objective of our balance 
sheet risk management program is to mitigate the 
exposure of foreign currency denominated net 
monetary assets and liabilities of foreign affiliates. In 
these instances, we principally utilize currency forward 
contracts. We have not elected hedge accounting for 
the balance sheet related items. The cash flows from 
these contracts are reported as operating activities in 
our consolidated statements of cash flows.

The following quantitative information includes 

the impact of currency movements on forward 
contracts used in our revenue, operating expense and 
balance sheet hedging programs. As of December 31, 
2017 and 2016, a hypothetical adverse 10% 
movement in foreign currency rates compared to the 
U.S. dollar across all maturities would result in a 
hypothetical decrease in the fair value of forward 
contracts of approximately $286.0 million and 
$172.0 million, respectively. The estimated fair value 
change was determined by measuring the impact of 
the hypothetical exchange rate movement on 
outstanding forward contracts. Our use of this 
methodology to quantify the market risk of such 
instruments is subject to assumptions and actual 
impact could be significantly different. The 
quantitative information about market risk is limited 
because it does not take into account all foreign 
currency operating transactions.  

Interest Rate Risk

Our investment portfolio includes cash 
equivalents and short-term investments. The fair 
value of our marketable securities is subject to 
change as a result of potential changes in market 
interest rates. The potential change in fair value for 
interest rate sensitive instruments has been 
assessed on a hypothetical 100 basis point adverse 
movement across all maturities. As of December 31, 
2017 and 2016, we estimate that such hypothetical 
100 basis point adverse movement would result in a 
hypothetical loss in fair value of approximately $50.0 
million to our interest rate sensitive instruments. The 
fair values of our investments were determined using 
third-party pricing services or other market observable 
data.

To achieve a desired mix of fixed and floating 

interest rate debt, we entered into interest rate swap 
contracts during 2015 for certain of our fixed-rate 
debt. These derivative contracts effectively converted 
a fixed-rate interest coupon to a floating-rate LIBOR-
based coupon over the life of the respective note. As 
of December 31, 2017 and 2016, a 100 basis-point 
adverse movement (increase in LIBOR) would increase 

annual interest expense by approximately 
$6.8 million. 

Pricing Pressure

Governments in some international markets in 

which we operate have implemented measures aimed 
at reducing healthcare costs to limit the overall level 
of government expenditures. These measures vary by 
country and may include, among other things, patient 
access restrictions, suspensions on price increases, 
prospective and possibly retroactive price reductions 
and other recoupments and increased mandatory 
discounts or rebates, recoveries of past price 
increases and greater importation of drugs from 
lower-cost countries. 

In addition, certain countries set prices by 
reference to the prices in other countries where our 
products are marketed. Thus, our inability to secure 
favorable prices in a particular country may impair our 
ability to obtain acceptable prices in existing and 
potential new markets, which may limit market growth. 
The continued implementation of pricing actions 
throughout Europe may also lead to higher levels of 
parallel trade.

In the U.S., federal and state legislatures, health 

agencies and third-party payors continue to focus on 
containing the cost of health care. Legislative and 
regulatory proposals, enactments to reform health 
care insurance programs and increasing pressure 
from social sources could significantly influence the 
manner in which our products are prescribed and 
purchased. It is possible that additional federal health 
care reform measures will be adopted in the future, 
which could result in increased pricing pressure and 
reduced reimbursement for our products and 
otherwise have an adverse impact on our 
consolidated financial position or results of 
operations.

Our products are also susceptible to increasing 

competition from generics and biosimilars in many 
markets. Generic versions of drugs and biosimilars 
are likely to be sold at substantially lower prices than 
branded products. Accordingly, the introduction of 
generic or biosimilar versions of our marketed 
products, as well as lower-priced competing products, 
likely would significantly reduce both the price that we 
receive for such marketed products and the volume of 
products that we sell, which may have an adverse 
impact on our consolidated results of operations.

There is also significant economic pressure on 

state budgets that results in states increasingly 
seeking to achieve budget savings through 
mechanisms that limit coverage or payment for our 
drugs. Managed care organizations are also 
continuing to seek price discounts and, in some 
cases, to impose restrictions on the coverage of 

90

particular drugs.

Credit Risk

We are subject to credit risk from our accounts 
receivable related to our product sales. The majority 
of our accounts receivable arise from product sales in 
the U.S. and Europe with concentrations of credit risk 
limited due to the wide variety of customers and 
markets using our products, as well as their 
dispersion across many different geographic areas. 
Our accounts receivable are primarily due from 
wholesale distributors, public hospitals and other 
government entities. We monitor the financial 
performance and creditworthiness of our customers 
so that we can properly assess and respond to 
changes in their credit profile. We operate in certain 
countries where weakness in economic conditions 
can result in extended collection periods. We continue 
to monitor these conditions, including the volatility 
associated with international economies and the 
relevant financial markets, and assess their possible 
impact on our business. To date, we have not 
experienced any significant losses with respect to the 
collection of our accounts receivable. 

Credit and economic conditions in the E.U. 
continue to remain uncertain, which has, from time to 
time, led to long collection periods for our accounts 
receivable and greater collection risk in certain 
countries. 

We believe that our allowance for doubtful 

accounts was adequate as of December 31, 2017 
and 2016. However, if significant changes occur in the 
availability of government funding or the 
reimbursement practices of these or other 
governments, we may not be able to collect on 
amounts due to us from customers in such countries 
and our results of operations could be adversely 
affected.

Item 8.     
Supplementary Data

Financial Statements and 

The information required by this Item 8 is 
contained on pages F-1 through F-78 of this report 
and is incorporated herein by reference.

Changes in and Disagreements 

Item 9.     
with Accountants on Accounting and 
Financial Disclosure

None.

Item 9A.      Controls and Procedures

Disclosure Controls and Procedures and 
Internal Control over Financial Reporting

Controls and Procedures

We have carried out an evaluation, under the 

supervision and with the participation of our 
management, including our principal executive officer 
and principal financial officer, of the effectiveness of 
the design and operation of our disclosure controls 
and procedures (as defined in Rules 13a-15(e) and 
15d-15(e) under the Securities Exchange Act of 1934, 
as amended), as of December 31, 2017. Based upon 
that evaluation, our principal executive officer and 
principal financial officer concluded that, as of the end 
of the period covered by this report, our disclosure 
controls and procedures are effective in ensuring that 
(a) the information required to be disclosed by us in 
the reports that we file or submit under the Securities 
Exchange Act is recorded, processed, summarized 
and reported within the time periods specified in the 
SEC’s rules and forms and (b) such information is 
accumulated and communicated to our management, 
including our principal executive officer and principal 
financial officer, as appropriate to allow timely 
decisions regarding required disclosure. In designing 
and evaluating our disclosure controls and 
procedures, our management recognized that any 
controls and procedures, no matter how well designed 
and operated, can provide only reasonable assurance 
of achieving the desired control objectives, and our 
management necessarily was required to apply its 
judgment in evaluating the cost-benefit relationship of 
possible controls and procedures.

U.S. GAAP. Our internal control over financial reporting 
includes those policies and procedures that:

•  pertain to the maintenance of records that, in 
reasonable detail, accurately and fairly reflect 
our transactions and dispositions of our assets;

•  provide reasonable assurance that transactions 
are recorded as necessary to permit preparation 
of financial statements in accordance with 
U.S. GAAP, and that our receipts and 
expenditures are being made only in accordance 
with authorizations of our management and 
directors; and

•  provide reasonable assurance regarding 

prevention or timely detection of unauthorized 
acquisition, use or disposition of our assets that 
could have a material effect on our financial 
statements.

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.

Our management assessed the effectiveness of 

our internal control over financial reporting as of 
December 31, 2017. In making this assessment, 
management used the criteria set forth by the 
Committee of Sponsoring Organizations of the 
Treadway Commission (COSO) in its 2013 Internal 
Control — Integrated Framework.

Changes in Internal Control over Financial Reporting

Based on our assessment, our management has 

concluded that, as of December 31, 2017, our 
internal control over financial reporting is effective 
based on those criteria.

The effectiveness of our internal control over 
financial reporting as of December 31, 2017, has 
been audited by PricewaterhouseCoopers LLP, an 
independent registered public accounting firm, as 
stated in their attestation report, which is included 
herein.

Item 9B.      Other Information

None.

There were no changes in our internal control 

over financial reporting during the quarter ended 
December 31, 2017, that have materially affected, or 
are reasonably likely to materially affect, our internal 
control over financial reporting.

Management’s Annual Report on Internal Control 

over Financial Reporting

Our management is responsible for establishing 

and maintaining adequate internal control over our 
financial reporting. Internal control over financial 
reporting is defined in Rules 13a-15(f) and 15d-15(f) 
under the Securities Exchange Act as a process 
designed by, or under the supervision of, a company’s 
principal executive and principal financial officers and 
effected by a company’s board of directors, 
management and other personnel to provide 
reasonable assurance regarding the reliability of 
financial reporting and the preparation of financial 
statements for external purposes in accordance with 

91

PART III

Item 13.      Certain Relationships and 
Related Transactions, and Director 
Independence

The response to this item is incorporated by 

reference from the discussion responsive thereto in 
the sections entitled “Certain Relationships and 
Related Person Transactions” and “Corporate 
Governance at Biogen” contained in the proxy 
statement for our 2018 annual meeting of 
stockholders.

Item 14.      Principal Accounting Fees and 
Services

The response to this item is incorporated by 

reference from the discussion responsive thereto in 
the section entitled “Proposal 2 — Ratification of the 
Selection of our Independent Registered Public 
Accounting Firm” contained in the proxy statement for 
our 2018 annual meeting of stockholders.

Item 10.      Directors, Executive Officers 
and Corporate Governance

The information concerning our executive 
officers is set forth under the heading “Our Executive 
Officers” in Item 1 of this report. The text of our code 
of business conduct, which includes the code of 
ethics that applies to our principal executive officer, 
principal financial officer, principal accounting officer 
or controller, and persons performing similar 
functions, is posted on our website, www.biogen.com, 
under the “Governance” subsection of the “About Us” 
section of the site. We intend to make all required 
disclosures regarding any amendments to, or waivers 
from, provisions of our code of business conduct at 
the same location of our website. 

The response to the remainder of this item is 

incorporated by reference from the discussion 
responsive thereto in the sections entitled 
“Proposal 1 - Election of Directors,” “Corporate 
Governance at Biogen,” “Stock Ownership - 
Section 16(a) Beneficial Ownership Reporting 
Compliance” and “Miscellaneous - Stockholder 
Proposals” contained in the proxy statement for our 
2018 annual meeting of stockholders.

Item 11.      Executive Compensation

The response to this item is incorporated by 

reference from the discussion responsive thereto in 
the sections entitled “Executive Compensation 
Matters” and “Corporate Governance at Biogen” 
contained in the proxy statement for our 2018 annual 
meeting of stockholders.

Item 12.      Security Ownership of Certain 
Beneficial Owners and Management and 
Related Stockholder Matters

The response to this item is incorporated by 

reference from the discussion responsive thereto in 
the sections entitled “Stock Ownership” and “Equity 
Compensation Plan Information” contained in the proxy 
statement for our 2018 annual meeting of 
stockholders.

92

PART IV

Item 15.  

Exhibits and Financial Statement Schedules

a.  

(1) Consolidated Financial Statements:

The following financial statements are filed as part of this report:

Financial Statements
Consolidated Statements of Income
Consolidated Statements of Comprehensive Income
Consolidated Balance Sheets
Consolidated Statements of Cash Flows
Consolidated Statements of Equity
Notes to Consolidated Financial Statements
Report of Independent Registered Public Accounting Firm

Certain totals may not sum due to rounding.

(2) Exhibits

Page Number

F-2
F-3
F-4
F-5
F-6
F-9
F-77

The exhibits listed on the Exhibit Index beginning on page 94, which is incorporated herein by reference, are 

filed or furnished as part of this report or are incorporated into this report by reference.

(3) Financial Statement Schedules

Schedules are omitted because they are not applicable, or are not required, or because the information is 

included in the consolidated financial statements and notes thereto.

Item 16.  

Form 10-K Summary

Not applicable.

93

  
 
Exhibit No.
2.1†

2.2

3.1

3.2

3.3

4.1

4.2

4.3

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*

EXHIBIT INDEX

Description

Asset Purchase Agreement among Biogen Idec International Holding Ltd., Elan Pharma 
International Limited and Elan Pharmaceuticals, Inc., dated as of February 5, 2013. Filed 
as Exhibit 2.1 to our Current Report on Form 8-K/A filed on February 12, 2013.

Separation Agreement between Biogen Inc. and Bioverativ Inc. dated as of January 31, 
2017. Filed as Exhibit 2.1 to our Current Report on Form 8-K filed on February 2, 2017.
Amended and Restated Certificate of Incorporation, as amended. Filed as Exhibit 3.1 to 
our Quarterly Report on Form 10-Q for the quarter ended June 30, 2012.

Certificate of Amendment to the Certificate of Incorporation. Filed as Exhibit 3.1 to our 
Current Report on Form 8-K filed on March 27, 2015.

Fourth Amended and Restated Bylaws. Filed as Exhibit 3.1 to our Current Report on Form 
8-K filed on June 9, 2017.
Reference is made to Exhibit 3.1 for a description of the rights, preferences and privileges 
of our Series A Preferred Stock and Series X Junior Participating Preferred Stock.

Indenture between Biogen Inc. and U.S. Bank National Association, dated as of September 
15, 2015. Filed as Exhibit 4.1 to our Current Report on Form 8-K filed on September 16, 
2015.

First Supplemental Indenture between Biogen Inc. and U.S. Bank National Association, 
dated September 15, 2015. Filed as Exhibit 4.2 to our Current Report on Form 8-K filed 
on September 16, 2015.
Credit Agreement between Biogen Inc., Bank of America, N.A., Goldman Sachs Bank USA 
and other lenders party thereto, dated August 28, 2015. Filed as Exhibit 10.1 to our Current 
Report on Form 8-K filed on September 1, 2015.

Second Amended and Restated Collaboration Agreement between Biogen Idec Inc. and 
Genentech, Inc., dated as of October 18, 2010. Filed as Exhibit 10.5 to our Annual Report 
on Form 10-K for the year ended December 31, 2010.

Letter  Agreement  regarding  GA101  financial  terms  between  Biogen  Idec  Inc.  and 
Genentech, Inc., dated October 18, 2010. Filed as Exhibit 10.6 to our Annual Report on 
Form 10-K for the year ended December 31, 2010.
Settlement  and  License  Agreement,  dated  January  17,  2017,  between  Biogen  Swiss 
Manufacturing GmbH, Biogen International Holdings ltd., Forward Pharma A/S and other 
parties thereto. Filed as Exhibit 10.1 to our Current Report on Form 8-K filed on February 
1, 2017.

Biogen Inc. 2017 Omnibus Equity Plan. Filed as Appendix B to our Definitive Proxy Statement 
on Schedule 14A filed on April 26, 2017.
Form of restricted stock unit award agreement under the Biogen Inc. 2017 Omnibus Equity 
Plan. Filed as Exhibit 10.2 to our Quarterly Report on Form 10-Q for the quarter ended 
June 30, 2017.

Form of market stock unit award agreement under the Biogen Inc. 2017 Omnibus Equity 
Plan. Filed as Exhibit 10.3 to our Quarterly Report on Form 10-Q for the quarter ended 
June 30, 2017.
Form of performance unit award agreement under the Biogen Inc. 2017 Omnibus Equity 
Plan. Filed as Exhibit 10.4 to our Quarterly Report on Form 10-Q for the quarter ended 
June 30, 2017.
Form  of  cash-settled  performance  unit  award  agreement  under  the  Biogen  Inc.  2017 
Omnibus Equity Plan. Filed as Exhibit 10.5 to our Quarterly Report on Form 10-Q for the 
quarter ended June 30, 2017.
Form of performance stock units award agreement (cash-settled) under the Biogen Inc. 
2017 Omnibus Equity Plan.
Form of performance stock units award agreement under the Biogen Inc. 2017 Omnibus 
Equity Plan.
Biogen Idec Inc. 2008 Amended and Restated Omnibus Equity Plan. Filed as Exhibit 10.1 
to our Quarterly Report on Form 10-Q for the quarter ended March 31, 2014.
Form of performance unit award agreement under the Biogen Idec Inc. 2008 Omnibus 
Equity Plan. Filed as Exhibit 10.2 to our Quarterly Report on Form 10-Q for the quarter 
ended March 31, 2014.

94

  
  
  
  
  
  
  
  
  
  
  
  
  
  
Exhibit No.
10.14*

10.15*

10.16*

10.17*

10.18*

10.19*

10.20*

10.21*

10.22*

10.23*

10.24*

10.25*

10.26*

10.27*

10.28*+
10.29*

10.30*

10.31*+
10.32*+
10.33*+
10.34*

10.35*

10.36*

10.37*

Description
Form of market stock unit award agreement under the Biogen Idec Inc. 2008 Omnibus 
Equity Plan. Filed as Exhibit 10.3 to our Quarterly Report on Form 10-Q for the quarter 
ended March 31, 2014.
Form of restricted stock unit award agreement under the Biogen Idec Inc. 2008 Omnibus 
Equity Plan. Filed as Exhibit 10.1 to our Current Report on Form 8-K filed on August 1, 
2008.
Form  of  nonqualified  stock  option  award  agreement  under  the  Biogen  Idec  Inc.  2008 
Omnibus Equity Plan. Filed as Exhibit 10.2 to our Current Report on Form 8-K filed on 
August 1, 2008.
Form of cash-settled performance shares award agreement under the Biogen Idec Inc. 
2008 Omnibus Equity Plan. Filed as Exhibit 10.1 to our Quarterly Report on Form 10-Q for 
the quarter ended March 31, 2010.

Biogen Inc. 2006 Non-Employee Directors Equity Plan, as amended. Filed as Exhibit 10.1 
to our Quarterly Report on Form 10-Q for the quarter ended March 31, 2015.
Biogen Inc. 2015 Employee Stock Purchase Plan. Filed as Appendix A to our Definitive 
Proxy Statement on Schedule 14A filed on April 30, 2015.
Biogen Idec Inc. 2008 Performance-Based Management Incentive Plan. Filed as Appendix 
B to our Definitive Proxy Statement on Schedule 14A filed on May 8, 2008.
Biogen Idec Inc. Voluntary Executive Supplemental Savings Plan, as amended and restated 
effective January 1, 2004. Filed as Exhibit 10.13 to our Annual Report on Form 10-K for 
the year ended December 31, 2003.

Biogen Idec Inc. Supplemental Savings Plan, as amended. Filed as Exhibit 10.23 to our 
Annual Report on Form 10-K for the year ended December 31, 2015.
Biogen Idec Inc. Voluntary Board of Directors Savings Plan, as amended. Filed as Exhibit 
10.24 to our Annual Report on Form 10-K for the year ended December 31, 2015.
Biogen Idec Inc. Executive Severance Policy - U.S. Executive Vice President, as amended 
effective January 1, 2014. Filed as Exhibit 10.39 to our Annual Report on Form 10-K for 
the year ended December 31, 2013.
Biogen Idec Inc. Executive Severance Policy - International Executive Vice President, as 
amended effective January 1, 2014. Filed as Exhibit 10.40 to our Annual Report on Form 
10-K for the year ended December 31, 2013.
Biogen Idec Inc. Executive Severance Policy - U.S.  Senior Vice President, as amended 
effective October 13, 2008. Filed as Exhibit 10.53 to our Annual Report on Form 10-K for 
the year ended December 31, 2008.
Biogen  Idec  Inc.  Executive  Severance  Policy  -  International  Senior  Vice  President,  as 
amended effective October 13, 2008. Filed as Exhibit 10.54 to our Annual Report on Form 
10-K for the year ended December 31, 2008.
Annual Retainer Summary for Board of Directors.
Form of indemnification agreement for directors and executive officers. Filed as Exhibit 
10.1 to our Current Report on Form 8-K filed on June 7, 2011.
Employment Agreement between Biogen Inc. and Michel Vounatsos dated December 18, 
2016. Filed as Exhibit 10.1 to our Current Report on Form 8-K filed on December 19, 
2016.
Letter regarding employment arrangement of Jeffrey Capello dated November 14, 2017.
Letter regarding employment arrangement of Gregory Covino dated February 25, 2012.
Letter regarding employment arrangement of Michael Ehlers dated April 16, 2016.
Letter regarding employment arrangement of Susan Alexander dated December 31, 2005. 
Filed as Exhibit 10.58 to our Annual Report on Form 10-K for the year ended December 
31, 2009.
Employment Agreement between Biogen Idec. Inc. and George A. Scangos amended as 
of August 23, 2013. Filed as Exhibit 10.1 to our Current Report on Form 8-K filed on August 
26, 2013.
Letter regarding employment arrangement of Paul J. Clancy dated August 17, 2007. Filed 
as Exhibit 10.49 to our Annual Report on Form 10-K for the year ended December 31, 
2007.
Letter regarding employment arrangement of John Cox dated May 19, 2016. Filed as Exhibit 
10.1 to our Quarterly Report on Form 10-Q for the quarter ended June 30, 2016.

95

  
  
  
  
  
  
  
  
  
  
  
  
  
  
Exhibit No.
10.38*

21+
23+
31.1+

31.2+

32.1++

101++

Description
Letter regarding employment arrangement of Kenneth DiPietro dated December 12, 2011. 
Filed as Exhibit 10.49 to our Annual Report on Form 10-K for the year ended December 31, 
2012.
Subsidiaries. 
Consent of PricewaterhouseCoopers LLP, an Independent Registered Public Accounting Firm.

Certification of the Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley 
Act of 2002.
Certification of the Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley 
Act of 2002.

Certification of the Chief Executive Officer and the Chief Financial Officer pursuant to Section 
906 of the Sarbanes-Oxley Act of 2002.
The following materials from Biogen Inc.’s Annual Report on Form 10-K for the year ended 
December 31, 2017, formatted in XBRL (Extensible Business Reporting Language): (i) the 
Consolidated Statements of Income, (ii) the Consolidated Statements of Comprehensive 
Income, (iii) the Consolidated Balance Sheets, (iv) the Consolidated Statements of Cash 
Flows, (v) the Consolidated Statements of Equity and (vi) Notes to Consolidated Financial 
Statements.

^

*

†

+

References  to  “our”  filings  mean  filings  made  by  Biogen  Inc.  and  filings  made  by  IDEC  Pharmaceuticals 
Corporation prior to the merger with Biogen, Inc. Unless otherwise indicated exhibits were previously filed with 
the Securities and Exchange Commission under Commission File Number 0-19311 and are incorporated herein 
by reference.

Management contract or compensatory plan or arrangement.

Confidential treatment has been granted or requested with respect to portions of this exhibit.

Filed herewith.

+ +

Furnished herewith.

96

  
  
  
  
  
  
  
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 behalf by the undersigned, thereunto duly authorized.

SIGNATURES

BIOGEN INC.

By:

/S/    MICHEL VOUNATSOS
Michel Vounatsos
Chief Executive Officer

Date: February 1, 2018 

97

 
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.

Name

Capacity

Date

/S/    MICHEL VOUNATSOS
Michel Vounatsos

/S/    Jeffrey D. Capello
Jeffrey D. Capello

/S/    GREGORY F. COVINO
Gregory F. Covino

/S/    STELIOS PAPADOPOULOS
Stelios Papadopoulos

/S/    ALEXANDER J. DENNER
 Alexander J. Denner

/S/    CAROLINE D. DORSA
Caroline D. Dorsa

/S/    NANCY L. LEAMING
Nancy L. Leaming

/S/    RICHARD C. MULLIGAN
Richard C. Mulligan

/S/    ROBERT W. PANGIA
Robert W. Pangia

/S/    BRIAN S. POSNER
Brian S. Posner

/S/    ERIC K. ROWINSKY
Eric K. Rowinsky

/S/    LYNN SCHENK
Lynn Schenk

/S/    STEPHEN A. SHERWIN
Stephen A. Sherwin

Director and Chief Executive Officer
(principal executive officer)

February 1, 2018

Executive Vice President and Chief
Financial Officer (principal financial
officer)

Vice President, Finance, Chief
Accounting Officer (principal
accounting officer)

February 1, 2018

February 1, 2018

   Director and Chairman of the Board of

Directors

February 1, 2018

Director

February 1, 2018

Director

February 1, 2018

Director

February 1, 2018

Director

February 1, 2018

Director

February 1, 2018

Director

February 1, 2018

Director

February 1, 2018

Director

February 1, 2018

Director

February 1, 2018

98

  
 
  
 
  
 
 
  
 
  
 
  
 
  
 
  
 
BIOGEN INC. AND SUBSIDIARIES
CONSOLIDATED FINANCIAL STATEMENTS

Consolidated Statements of Income
Consolidated Statements of Comprehensive Income
Consolidated Balance Sheets
Consolidated Statements of Cash Flows
Consolidated Statements of Equity
Notes to Consolidated Financial Statements
Report of Independent Registered Public Accounting Firm   

Page Number

F-2
F-3
F-4
F-5
F-6
F-9
F-77

F- 1

 
  
  
  
  
  
  
BIOGEN INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF INCOME
(In millions, except per share amounts)

Revenues:

Product, net ........................................................................ $
Revenues from anti-CD20 therapeutic programs ....................
Other..................................................................................
Total revenues ................................................................

10,354.7 $

1,559.2
360.0
12,273.9

9,817.9 $
1,314.5
316.4
11,448.8

9,188.5
1,339.2
236.1
10,763.8

For the Years Ended December 31,

2017

2016

2015

Cost and expenses:

Cost of sales, excluding amortization of acquired intangible
assets................................................................................

Research and development..................................................
Selling, general and administrative .......................................
Amortization of acquired intangible assets ............................
Acquired in-process research and development .....................
Collaboration profit (loss) sharing .........................................
Loss (gain) on fair value remeasurement of contingent
consideration ......................................................................
Restructuring charges..........................................................
TECFIDERA litigation settlement charge.................................
Total cost and expenses ..................................................
Income from operations .........................................................
Other income (expense), net ..................................................
Income before income tax expense and equity in loss of
investee, net of tax................................................................

Income tax expense ..............................................................
Equity in loss of investee, net of tax .......................................
Net income ...........................................................................
Net income (loss) attributable to noncontrolling interests, net
of tax ...................................................................................
Net income attributable to Biogen Inc. .................................... $
Net income per share:

1,630.0
2,253.6
1,935.5
814.7
120.0
112.3

62.7
0.9
—
6,929.7
5,344.2
(215.4)

5,128.8
2,458.7
—
2,670.1

1,478.7
1,973.3
1,947.9
385.6
—
10.2

14.8
33.1
454.8
6,298.4
5,150.4
(217.4)

4,933.0
1,237.3
—
3,695.7

131.0
2,539.1 $

(7.1)
3,702.8 $

Basic earnings per share attributable to Biogen Inc. .............. $
Diluted earnings per share attributable to Biogen Inc. ............ $

11.94 $
11.92 $

16.96 $
16.93 $

Weighted-average shares used in calculating:

Basic earnings per share attributable to Biogen Inc. ..............
Diluted earnings per share attributable to Biogen Inc. ............

212.6
213.0

218.4
218.8

1,240.4
2,012.8
2,113.1
382.6
—
—

30.5
93.4
—
5,872.8
4,891.0
(123.7)

4,767.3
1,161.6
12.5
3,593.2

46.2
3,547.0

15.38
15.34

230.7
231.2

See accompanying notes to these consolidated financial statements.

F- 2

 
 
BIOGEN INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(In millions)

Net income attributable to Biogen Inc.

$

2,539.1 $

3,702.8 $

3,547.0

For the Years Ended December 31,

2017

2016

2015

Other comprehensive income:

Unrealized gains (losses) on securities available for sale:

Unrealized gains (losses) recognized during the period, net
of tax ...............................................................................
Less: reclassification adjustment for (gains) losses included
in net income, net of tax ....................................................
Unrealized gains (losses) on securities available for sale,
net of tax........................................................................

Unrealized gains (losses) on cash flow hedges:

Unrealized gains (losses) recognized during the period, net
of tax ...............................................................................
Less: reclassification adjustment for (gains) losses included
in net income, net of tax ....................................................
Unrealized gains (losses) on cash flow hedges, net of tax ..

Unrealized gains (losses) on pension benefit obligation, net
of tax .................................................................................
Currency translation adjustment ...........................................
Total other comprehensive income (loss), net of tax.................
Comprehensive income attributable to Biogen Inc....................
Comprehensive income (loss) attributable to noncontrolling
interests, net of tax ...............................................................
Comprehensive income ......................................................... $

(3.5)

12.7

9.2

(193.8)

31.5
(162.3)

(4.1)

158.7

1.5

(10.6)

0.6

(10.0)

51.6

(4.0)
47.6

5.1

(138.6)

(95.9)

2,540.6

3,606.9

(1.7)

1.3

(0.4)

110.8

(172.3)
(61.5)

(6.2)

(96.4)

(164.5)

3,382.5

131.0

(7.1)

46.2

2,671.6 $

3,599.8 $

3,428.7

See accompanying notes to these consolidated financial statements.
F- 3

 
 
BIOGEN INC. AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(In millions, except per share amounts)

As of December 31,

2017

2016

ASSETS

Current assets:

Cash and cash equivalents ........................................................................ $
Marketable securities ................................................................................
Accounts receivable, net ............................................................................
Due from anti-CD20 therapeutic programs...................................................
Inventory ..................................................................................................
Other current assets .................................................................................
Total current assets...............................................................................
Marketable securities ..................................................................................
Property, plant and equipment, net ...............................................................
Intangible assets, net ..................................................................................
Goodwill .....................................................................................................
Investments and other assets ......................................................................

1,573.8 $
2,115.2
1,787.0
532.6
902.7
962.0
7,873.3
3,057.3
3,182.4
3,879.6
4,632.5
1,027.5

Total assets.......................................................................................... $

23,652.6 $

LIABILITIES AND EQUITY

Current liabilities:

Current portion of notes payable and other financing arrangements .............. $
Taxes payable ...........................................................................................
Accounts payable ......................................................................................
Accrued expenses and other ......................................................................
Total current liabilities ...........................................................................
Notes payable and other financing arrangements...........................................
Deferred tax liability.....................................................................................
Other long-term liabilities .............................................................................
Total liabilities.......................................................................................

Commitments and contingencies
Equity:
Biogen Inc. shareholders’ equity

Preferred stock, par value $0.001 per share ...............................................
Common stock, par value $0.0005 per share..............................................
Additional paid-in capital ............................................................................
Accumulated other comprehensive loss ......................................................
Retained earnings .....................................................................................
Treasury stock, at cost; 23.8 million and 22.6 million shares, respectively ....
Total Biogen Inc. shareholders’ equity .....................................................
Noncontrolling interests ...............................................................................
Total equity ...........................................................................................
Total liabilities and equity....................................................................... $

3.2 $

68.2
395.5
2,901.3
3,368.2
5,935.0
122.6
1,628.7
11,054.5

—
0.1
97.8
(318.4)
15,810.4
(2,977.1)
12,612.8
(14.7)
12,598.1
23,652.6 $

2,326.5
2,568.6
1,441.6
300.6
1,001.6
1,093.3
8,732.2
2,829.4
2,501.8
3,808.3
3,669.3
1,335.8
22,876.8

4.7
231.9
279.8
2,903.5
3,419.9
6,512.7
93.1
722.5
10,748.2

—
0.1
—
(319.9)
15,071.6
(2,611.7)
12,140.1
(11.5)
12,128.6
22,876.8

See accompanying notes to these consolidated financial statements.

F- 4

 
 
BIOGEN INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(In millions)

Cash flows from operating activities:

Net income.................................................................................................. $
Adjustments to reconcile net income to net cash flows from operating
activities:

Depreciation and amortization ..................................................................
Acquired in-process research and development..........................................
Share-based compensation ......................................................................

Deferred income taxes .............................................................................
Contingent consideration..........................................................................
Other ......................................................................................................
Changes in operating assets and liabilities, net:

Accounts receivable ............................................................................
Due from anti-CD20 therapeutic programs ............................................
Inventory ............................................................................................
Other assets.......................................................................................
Accrued expenses and other current liabilities.......................................

Income tax assets and liabilities ..........................................................
Other liabilities ...................................................................................
Net cash flows provided by operating activities....................................

Cash flows from investing activities:

Proceeds from sales and maturities of marketable securities ..........................
Purchases of marketable securities...............................................................

Contingent consideration related to Fumapharm AG acquisition .......................

Acquired in-process research and development ..............................................
Acquisitions of businesses, net of cash acquired ...........................................
Purchases of property, plant and equipment...................................................
Acquisitions of intangible assets ...................................................................
Other ..........................................................................................................

For the Years Ended December 31,

2017

2016

2015

2,670.1 $

3,695.7 $

3,593.2

1,081.0
120.0

128.0
91.7
62.7
162.1

(435.6)
(232.0)
(94.5)
(76.6)

(227.4)
1,303.9
(2.4)

4,551.0

5,565.9

(5,355.2)

(1,200.0)
(120.0)
—
(867.4)
(975.4)

(11.0)

682.7
—

154.8
(175.0)
14.8
89.0

(241.4)
13.9
(165.6)
59.1

622.3
(232.6)
69.5

600.4
—

161.4
(145.6)
30.5
129.9

29.0
(31.1)
(174.4)
(127.0)

199.3
(429.4)
83.2

4,587.2

3,919.4

7,378.9

(7,913.2)

(1,200.0)
—
—
(616.1)
(111.6)

(22.8)

4,063.0

(6,864.9)

(850.0)
—
(198.8)
(643.0)
(15.4)

(44.5)

Net cash flows used in investing activities ..........................................

(2,963.1)

(2,484.8)

(4,553.6)

Cash flows from financing activities:

Purchases of treasury stock..........................................................................
Payments related to issuance of stock for share-based compensation
arrangements, net........................................................................................
Net distribution to noncontrolling interest.......................................................

Proceeds from borrowings ............................................................................

Repayments of borrowings ............................................................................

Net cash contribution to Bioverativ, Inc. .........................................................

Contingent consideration payments ...............................................................

Other ..........................................................................................................

Net cash flows provided by (used in) financing activities.......................

Net increase in cash and cash equivalents.......................................................

Effect of exchange rate changes on cash and cash equivalents .........................

(1,365.4)

(1,000.0)

(5,000.0)

(5.3)

(134.1)

—

(560.9)

(302.7)

(3.0)

(8.6)

(2,380.0)

(792.1)

39.4

(8.5)

—

—

(2.7)

—

(38.6)

(2.8)

(1,052.6)

1,049.8

(31.3)

(70.9)

(56.1)

5,930.5

(2.1)

—

(13.1)

(5.2)

783.1

148.9

(45.8)

Cash and cash equivalents, beginning of the year.............................................
Cash and cash equivalents, end of the year ..................................................... $

2,326.5

1,308.0

1,204.9

1,573.8 $

2,326.5 $

1,308.0

See accompanying notes to these consolidated financial statements.

F- 5

 
 
)
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.
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,
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(

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.
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8
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(

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1.  

Summary of Significant Accounting Policies

Business Overview

Biogen is a global biopharmaceutical company focused on discovering, developing and delivering worldwide 
innovative therapies for people living with serious neurological and neurodegenerative diseases, including in our core 
growth areas of multiple sclerosis (MS) and neuroimmunology, Alzheimer’s disease (AD) and dementia, movement 
disorders and neuromuscular disorders, including spinal muscular atrophy (SMA) and amyotrophic lateral sclerosis 
(ALS). We also plan to invest in emerging growth areas such as pain, ophthalmology, neuropsychiatry and acute 
neurology. In addition, we are employing innovative technologies to discover potential treatments for rare and genetic 
disorders, including new ways of treating diseases through gene therapy in the previously mentioned areas. We also 
manufacture and commercialize biosimilars of advanced biologics.

Our marketed products include TECFIDERA, AVONEX, PLEGRIDY, TYSABRI, ZINBRYTA and FAMPYRA for the 
treatment of MS, SPINRAZA for the treatment of SMA and FUMADERM for the treatment of severe plaque psoriasis. 
We also have certain business and financial rights with respect to RITUXAN for the treatment of non-Hodgkin's 
lymphoma, chronic lymphocytic leukemia (CLL) and other conditions, GAZYVA for the treatment of CLL and follicular 
lymphoma, OCREVUS for the treatment of primary progressive MS and relapsing MS and other potential anti-CD20 
therapies under a collaboration agreement with Genentech, Inc. (Genentech), a wholly-owned member of the Roche 
Group. 

We support our drug discovery and development efforts through the commitment of significant resources to 
discovery, research and development programs and business development opportunities, particularly within our core 
and emerging growth areas. For nearly two decades we have led in the research and development of new therapies 
to treat MS, resulting in our leading portfolio of MS treatments. Now our research is focused on additional 
improvements in the treatment of MS, such as the development of next generation therapies for MS, with a goal to 
reverse or possibly repair damage caused by the disease. We are also applying our scientific expertise to solve some 
of the most challenging and complex diseases, including AD, progressive supranuclear palsy (PSP), a rare condition 
that affects movement, speech, vision and cognitive function, Parkinson's disease and ALS.

Our innovative drug development and commercialization activities are complemented by our biosimilar therapies 

that expand access to medicines and reduce the cost burden for healthcare systems. We are leveraging our 
manufacturing capabilities and know-how to develop, manufacture and market biosimilars through Samsung Bioepis, 
our joint venture with Samsung BioLogics Co. Ltd. (Samsung Biologics). Under our commercial agreement, we market 
and sell BENEPALI, an etanercept biosimilar referencing ENBREL, and FLIXABI, an infliximab biosimilar referencing 
REMICADE in the European Union (E.U.). 

Hemophilia Spin-Off

On February 1, 2017, we completed the spin-off of our hemophilia business, Bioverativ Inc. (Bioverativ), as an 

independent, publicly traded company. Our consolidated results of operations and financial position included in these 
audited consolidated financial statements reflect the financial results of our hemophilia business for all periods 
through January 31, 2017.

For additional information on the spin-off of our hemophilia business, please read Note 3, Hemophilia Spin-Off, 

to these consolidated financial statements.

Consolidation

Our consolidated financial statements reflect our financial statements, those of our wholly-owned subsidiaries 
and those of certain variable interest entities where we are the primary beneficiary. For consolidated entities where 
we own or are exposed to less than 100% of the economics, we record net income (loss) attributable to 
noncontrolling interests in our consolidated statements of income equal to the percentage of the economic or 
ownership interest retained in such entities by the respective noncontrolling parties. Intercompany balances and 
transactions are eliminated in consolidation. 

In determining whether we are the primary beneficiary of an entity, we apply a qualitative approach that 
determines whether we have both (1) the power to direct the economically significant activities of the entity and (2) 

F- 9

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

the obligation to absorb losses of, or the right to receive benefits from, the entity that could potentially be significant 
to that entity. These considerations impact the way we account for our existing collaborative relationships and other 
arrangements. We continuously assess whether we are the primary beneficiary of a variable interest entity as 
changes to existing relationships or future transactions may result in us consolidating or deconsolidating one or 
more of our collaborators or partners.

Use of Estimates

The preparation of our consolidated financial statements requires us to make estimates, judgments and 
assumptions that may affect the reported amounts of assets, liabilities, equity, revenues and expenses and related 
disclosure of contingent assets and liabilities. On an on-going basis we evaluate our estimates, judgments and 
methodologies. We base our estimates on historical experience and on various other assumptions that we believe 
are reasonable, the results of which form the basis for making judgments about the carrying values of assets, 
liabilities and equity and the amount of revenues and expenses. Actual results may differ from these estimates 
under different assumptions or conditions.

Revenue Recognition

We recognize revenues when all of the following criteria are met: persuasive evidence of an arrangement exists; 

delivery has occurred or services have been rendered; our price to the customer is fixed or determinable; and 
collectability is reasonably assured.

Product Revenues

Revenues from product sales are recognized when title and risk of loss have passed to the customer, which is 

typically upon delivery. 

Reserves for Discounts and Allowances

Revenues from product sales are recorded net of reserves established for applicable discounts and 
allowances, including those associated with the implementation of pricing actions in certain of the international 
markets in which we operate. These reserves are based on estimates of the amounts earned or to be claimed on 
the related sales and are classified as reductions of accounts receivable (if the amount is payable to our customer) 
or a liability (if the amount is payable to a party other than our customer). Our estimates take into consideration our 
historical experience, current contractual and statutory requirements, specific known market events and trends, 
industry data and forecasted customer buying and payment patterns. Actual amounts may ultimately differ from our 
estimates. If actual results vary, we adjust these estimates, which could have an effect on earnings in the period of 
adjustment. 

Product revenue reserves are categorized as follows: discounts, contractual adjustments and returns.

Discounts include trade term discounts and wholesaler incentives. Trade term discounts and wholesaler 
incentives primarily relate to estimated obligations for credits to be granted to wholesalers for remitting payment on 
their purchases within established incentive periods and credits to be granted to wholesalers for compliance with 
various contractually-defined inventory management practices, respectively. We determine these reserves based on 
our historical experience, including the timing of customer payments.

Contractual adjustments primarily relate to Medicaid and managed care rebates, co-payment (copay) 
assistance, Veterans Administration (VA) and Public Health Service (PHS) discounts, specialty pharmacy program 
fees and other governmental rebates or applicable allowances.

•  Medicaid rebates relate to our estimated obligations to states under established reimbursement arrangements. 
Rebate accruals are recorded in the same period the related revenue is recognized, resulting in a reduction of 
product revenue and the establishment of a liability which is included in other current liabilities. Our liability for 
Medicaid rebates consists of estimates for claims that a state will make for the current quarter, claims for prior 
quarters that have been estimated for which an invoice has not been received, invoices received for claims from 
the prior quarters that have not been paid, and an estimate of potential claims that will be made for inventory 
that exists in the distribution channel at period end.

•  Governmental rebates or chargebacks, including VA and PHS discounts, represent our estimated obligations 

resulting from contractual commitments to sell products to qualified healthcare providers at prices lower than 
the list prices we charge to wholesalers which provide those products. The wholesaler charges us for the 

F- 10

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

difference between what the wholesaler pays for the products and the ultimate selling price to the qualified 
healthcare providers. Rebate and chargeback reserves are established in the same period as the related 
revenue is recognized, resulting in a reduction in product revenue and accounts receivable. Chargeback 
amounts are generally determined at the time of resale to the qualified healthcare provider from the wholesaler, 
and we generally issue credits for such amounts within a few weeks of the wholesaler notifying us about the 
resale. Our reserves for VA, PHS and chargebacks consist of amounts that we expect to issue for inventory that 
exists at the wholesalers that we expect will be sold to qualified healthcare providers and chargebacks that 
wholesalers have claimed for which we have not issued a credit.

•  Managed care rebates represent our estimated obligations to third parties, primarily pharmacy benefit 

managers. Rebate accruals are recorded in the same period the related revenue is recognized, resulting in a 
reduction of product revenue and the establishment of a liability which is included in accrued expenses and 
other current liabilities. These rebates result from performance-based goals, formulary position and price 
increase limit allowances (price protection). The calculation of the accrual for these rebates is based on an 
estimate of the customer’s buying patterns and the resulting applicable contractual rebate rate(s) to be earned 
over a contractual period.

•  Copay assistance represents financial assistance to qualified patients, assisting them with prescription drug co-
payments required by insurance. The calculation of the accrual for copay is based on an estimate of claims and 
the cost per claim that we expect to receive associated with inventory that exists in the distribution channel at 
period end.

•  Other governmental rebates, non-US pharmaceutical taxes or applicable allowances primarily relate to 

mandatory rebates and discounts in international markets where government-sponsored healthcare systems 
are the primary payors for healthcare.

Product returns are established for returns expected to be made by wholesalers and are recorded in the period 

the related revenue is recognized, resulting in a reduction to product sales. In accordance with contractual terms, 
wholesalers are permitted to return product for reasons such as damaged or expired product. The majority of 
wholesaler returns are due to product expiration. Expired product return reserves are estimated through a 
comparison of historical return data to their related sales on a production lot basis. Historical rates of return are 
determined for each product and are adjusted for known or expected changes in the marketplace specific to each 
product.

In addition to the discounts, rebates and product returns described above and classified as a reduction of 

revenue, we also maintain certain customer service contracts with distributors and other customers in the 
distribution channel that provide us with inventory management, data and distribution services, which are generally 
reflected as a reduction of revenue. To the extent we can demonstrate a separable benefit and fair value for these 
services, we classify these payments in selling, general and administrative expenses.

Revenues from Anti-CD20 Therapeutic Programs

Revenues from anti-CD20 therapeutic programs consist of:

(i)   our share of pre-tax profits and losses in the United States (U.S.) for RITUXAN and GAZYVA; 

(ii)   reimbursement of our selling and development expenses in the U.S. for RITUXAN; and 

(iii)  other revenues from anti-CD20 therapeutic programs, which primarily consist of our share of pre-tax co-

promotion profits on RITUXAN in Canada and royalty revenues on sales of OCREVUS.  

Pre-tax co-promotion profits on RITUXAN and GAZYVA are calculated and paid to us by Genentech in the U.S. 

Pre-tax co-promotion profits on RITUXAN are calculated and paid to us by the Roche Group in Canada. Pre-tax co-
promotion profits consist of U.S. and Canadian net sales to third-party customers less applicable costs to 
manufacture, third-party royalty expenses, distribution, selling and marketing expenses and joint development 
expenses incurred by Genentech, the Roche Group and us. Our share of the pre-tax profits on RITUXAN and GAZYVA 
in the U.S. and pre-tax co-promotion profits on RITUXAN in Canada include estimates made by Genentech and those 
estimates are subject to change. Actual results may differ from our estimates. For additional information on our 
collaboration with Genentech, please read Note 20, Collaborative and Other Relationships, to these consolidated 
financial statements. 

F- 11

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Royalty Revenues

We receive royalty revenues on sales by our licensees of other products covered under patents that we own. We 

do not have future performance obligations under these license arrangements. We record these revenues based on 
estimates of the sales that occurred during the relevant period as a component of other revenues. The relevant 
period estimates of sales are based on interim data provided by licensees and analysis of historical royalties that 
have been paid to us, adjusted for any changes in facts and circumstances, as appropriate. Differences between 
actual and estimated royalty revenues are adjusted for in the period in which they become known, typically the 
following quarter. Historically, adjustments have not been material when compared to actual amounts paid by 
licensees. 

Multiple-Element Revenue Arrangements

We may enter into transactions that involve the sale of products and related services under multiple element 

arrangements. In accounting for these transactions, we assess the elements of the contract and whether each 
element has standalone value and allocate revenues to the various elements based on their estimated selling price 
as a component of total revenues. The selling price of a revenue generating element can be based on current selling 
prices offered by us or another party for current products or management’s best estimate of a selling price. 
Revenues allocated to an individual element are recognized when all other revenue recognition criteria are met for 
that element.

Collaborative and Other Relationships

Our development and commercialization arrangement with AbbVie Inc. (AbbVie) represents a collaborative 
arrangement as each party is an active participant and exposed to significant risks and rewards of the arrangement. 
Where we are the principal on sales transactions with third parties, we recognize revenues, cost of sales and 
operating expenses on a gross basis in their respective lines in our consolidated statements of income. Where we 
are not the principal on sales transactions with third parties, we record our share of the revenues, cost of sales and 
operating expenses on a net basis in collaborative and other relationships included in other revenue in our 
consolidated statements of income. 

For additional information on our collaboration with AbbVie, please read Note 20, Collaborative and Other 

Relationships, to these consolidated financial statements.

Fair Value Measurements

We have certain financial assets and liabilities recorded at fair value which have been classified as Level 1, 2 

or 3 within the fair value hierarchy as described in the accounting standards for fair value measurements.

•  Level 1 — Fair values are determined utilizing quoted prices (unadjusted) in active markets for identical assets 

or liabilities that we have the ability to access;

•  Level 2 — Fair values are determined by utilizing quoted prices for identical or similar assets and liabilities in 

active markets or other market observable inputs such as interest rates, yield curves and foreign currency spot 
rates; and

•  Level 3 — Prices or valuations that require inputs that are both significant to the fair value measurement and 

unobservable.

The majority of our financial assets have been classified as Level 2. Our financial assets (which include our 

cash equivalents, derivative contracts, marketable debt securities and plan assets for deferred compensation) have 
been initially valued at the transaction price and subsequently valued, at the end of each reporting period, utilizing 
third-party pricing services or other market observable data. The pricing services utilize industry standard valuation 
models, including both income and market-based approaches and observable market inputs to determine value. 
These observable market inputs include reportable trades, benchmark yields, credit spreads, broker/dealer quotes, 
bids, offers, current spot rates and other industry and economic events.

We validate the prices provided by our third-party pricing services by reviewing their pricing methods and 
matrices, obtaining market values from other pricing sources and analyzing pricing data in certain instances. After 
completing our validation procedures, we did not adjust or override any fair value measurements provided by our 
pricing services as of December 31, 2017 and 2016.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Other Assets and Liabilities

The carrying amounts reflected in our consolidated balance sheets for current accounts receivable, due from 

anti-CD20 therapeutic programs, other current assets, accounts payable and accrued expenses and other, 
approximate fair value due to their short-term maturities.

Cash and Cash Equivalents

We consider only those investments which are highly liquid, readily convertible to cash and that mature within 
three months from date of purchase to be cash equivalents. As of December 31, 2017 and 2016, cash equivalents 
were comprised of money market funds and commercial paper, overnight reverse repurchase agreements and other 
debt securities with maturities less than 90 days from the date of purchase.

Accounts Receivable

The majority of our accounts receivable arise from product sales and primarily represent amounts due from our 

wholesale distributors, public hospitals and other government entities. We monitor the financial performance and 
creditworthiness of our customers so that we can properly assess and respond to changes in their credit profile. We 
provide reserves against trade receivables for estimated losses that may result from a customer’s inability to pay. 
Amounts determined to be uncollectible are charged or written-off against the reserve. To date, our historical 
reserves and write-offs of accounts receivable have not been significant.

In countries where we have experienced a pattern of payments extending beyond our contractual payment term 
and we expect to collect receivables greater than one year from the time of sale, we have discounted our receivables 
and reduced related revenues over the period of time that we estimate those amounts will be paid using the 
country’s market-based borrowing rate for such period. The related receivables are classified at the time of sale as 
non-current assets. We accrete interest income on these receivables, which is recognized as a component of other 
income (expense), net in our consolidated statements of income.

Concentration of Credit Risk

Financial instruments that potentially subject us to concentrations of credit risk include cash and cash 

equivalents, investments, derivatives and accounts receivable. We attempt to minimize the risks related to cash and 
cash equivalents and investments by investing in a broad and diverse range of financial instruments as previously 
defined by us. We have established guidelines related to credit ratings and maturities intended to safeguard principal 
balances and maintain liquidity. Our investment portfolio is maintained in accordance with our investment policy, 
which defines allowable investments, specifies credit quality standards and limits the credit exposure of any single 
issuer. We minimize credit risk resulting from derivative instruments by choosing only highly rated financial 
institutions as counterparties.

Concentrations of credit risk with respect to receivables, which are typically unsecured, are somewhat mitigated 

due to the wide variety of customers and markets using our products, as well as their dispersion across many 
different geographic areas. The majority of our accounts receivable arise from product sales in the U.S. and Europe 
and have standard payment terms that generally require payment within 30 to 90 days. We monitor the financial 
performance and creditworthiness of our customers so that we can properly assess and respond to changes in their 
credit profile. We continue to monitor these conditions and assess their possible impact on our business. 

As of December 31, 2017 and 2016, two wholesale distributors individually accounted for approximately 26.5% 

and 19.0%, and 37.2% and 19.2%, of accounts receivable, net, respectively. 

Marketable Securities and Other Investments

Marketable Debt Securities

Available-for-sale debt securities are recorded at fair market value and unrealized gains and losses are included 

in accumulated other comprehensive income (loss) in equity, net of related tax effects, unless the security has 
experienced a credit loss, we have determined that we have the intent to sell the security or we have determined that 
it is more likely than not that we will have to sell the security before its expected recovery. Realized gains and losses 
are reported in other income (expense), net, on a specific identification basis.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Marketable Equity Securities

Our marketable equity securities represent investments in publicly traded equity securities and are included in 

investments and other assets in our consolidated balance sheets. When assessing whether a decline in the fair 
value of a marketable equity security is other-than-temporary, we consider the fair market value of the security, the 
duration of the security’s decline and prospects for the underlying business, including favorable or adverse clinical 
trial results, new product initiatives and new collaborative agreements with the companies in which we have invested.

Non-Marketable Equity Securities

We also invest in equity securities of companies whose securities are not publicly traded and where fair value 

is not readily available. These investments are recorded using either the cost method or the equity method of 
accounting, depending on our ownership percentage and other factors that suggest we have significant influence. We 
monitor these investments to evaluate whether any decline in their value has occurred that would be other-than-
temporary, based on the implied value of recent company financings, public market prices of comparable companies 
and general market conditions and are included in investments and other assets in our consolidated balance sheets.

Evaluating Investments for Other-than-Temporary Impairments

We conduct periodic reviews to identify and evaluate each investment that has an unrealized loss, in 
accordance with the meaning of other-than-temporary impairment and its application to certain investments. An 
unrealized loss exists when the current fair value of an individual security is less than its amortized cost basis. 
Unrealized losses on available-for-sale securities that are determined to be temporary, and not related to credit loss, 
are recorded, net of tax, in accumulated other comprehensive income.

For available-for-sale debt securities with unrealized losses, management performs an analysis to assess 

whether we intend to sell or whether we would more likely than not be required to sell the security before the 
expected recovery of the amortized cost basis. Where we intend to sell a security, or may be required to do so, the 
security’s decline in fair value is deemed to be other-than-temporary and the full amount of the unrealized loss is 
reflected in earnings as an impairment loss.

Regardless of our intent to sell a security, we perform additional analysis on all securities with unrealized 
losses to evaluate losses associated with the creditworthiness of the security. Credit losses are identified where we 
do not expect to receive cash flows sufficient to recover the amortized cost basis of a security.

For equity securities, when assessing whether a decline in value is other-than-temporary, we consider the fair 
market value of the security, the duration of the security’s decline and the financial condition of the issuer. We then 
consider our intent and ability to hold the equity security for a period of time sufficient to recover our carrying value. 
Where we have determined that we lack the intent and ability to hold an equity security to its expected recovery, the 
security’s decline in fair value is deemed to be other-than-temporary and is reflected in earnings as an impairment 
loss.

Equity Method of Accounting

In circumstances where we have the ability to exercise significant influence over the operating and financial 

policies of a company in which we have an investment, we utilize the equity method of accounting for recording 
investment activity. In assessing whether we exercise significant influence, we consider the nature and magnitude of 
our investment, the voting and protective rights we hold, any participation in the governance of the other company 
and other relevant factors such as the presence of a collaborative or other business relationship. Under the equity 
method of accounting, we record in our results of operations our share of income or loss of the other company. If our 
share of losses exceeds the carrying value of our investment, we will suspend recognizing additional losses and will 
continue to do so unless we commit to providing additional funding. 

Inventory

Inventories are stated at the lower of cost or market with cost based on the first-in, first-out method. We 
classify our inventory costs as long-term when we expect to utilize the inventory beyond our normal operating cycle 
and include these costs in investments and other assets in our consolidated balance sheets. Inventory that can be 
used in either the production of clinical or commercial products is expensed as research and development costs 
when identified for use in a clinical manufacturing campaign.

F- 14

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Capitalization of Inventory Costs

We capitalize inventory costs associated with our products prior to regulatory approval, when, based on 
management’s judgment, future commercialization is considered probable and the future economic benefit is 
expected to be realized. We consider numerous attributes in evaluating whether the costs to manufacture a 
particular product should be capitalized as an asset. We assess the regulatory approval process and where the 
particular product stands in relation to that approval process, including any known safety or efficacy concerns, 
potential labeling restrictions and other impediments to approval. We evaluate our anticipated research and 
development initiatives and constraints relating to the product and the indication in which it will be used. We 
consider our manufacturing environment including our supply chain in determining logistical constraints that could 
hamper approval or commercialization. We consider the shelf life of the product in relation to the expected timeline 
for approval and we consider patent related or contract issues that may prevent or delay commercialization. We also 
base our judgment on the viability of commercialization, trends in the marketplace and market acceptance criteria. 
Finally, we consider the reimbursement strategies that may prevail with respect to the product and assess the 
economic benefit that we are likely to realize. We expense previously capitalized costs related to pre-approval 
inventory upon a change in such judgment, due to, among other potential factors, a denial or significant delay of 
approval by necessary regulatory bodies.

Obsolescence and Unmarketable Inventory

We periodically review our inventories for excess or obsolescence and write-down obsolete or otherwise 

unmarketable inventory to its estimated net realizable value. If the actual net realizable value is less than that 
estimated by us, or if it is determined that inventory utilization will further diminish based on estimates of demand, 
additional inventory write-downs may be required. Additionally, our products are subject to strict quality control and 
monitoring that we perform throughout the manufacturing process. In the event that certain batches or units of 
product no longer meet quality specifications, we will record a charge to cost of sales to write-down any 
unmarketable inventory to its estimated net realizable value. In all cases, product inventory is carried at the lower of 
cost or its estimated net realizable value. Amounts written-down due to unmarketable inventory are charged to cost 
of sales.

Property, Plant and Equipment

Property, plant and equipment are carried at cost, subject to review for impairment whenever events or changes 

in circumstances indicate that the carrying amount of the asset may not be recoverable. The cost of normal, 
recurring, or periodic repairs and maintenance activities related to property, plant and equipment are expensed as 
incurred. The cost for planned major maintenance activities, including the related acquisition or construction of 
assets, is capitalized if the repair will result in future economic benefits.

Interest costs incurred during the construction of major capital projects are capitalized until the underlying 
asset is ready for its intended use, at which point the interest costs are amortized as depreciation expense over the 
life of the underlying asset. We also capitalize certain direct and incremental costs associated with the validation 
effort required for licensing by regulatory agencies of new manufacturing equipment for the production of a 
commercially approved drug. These costs primarily include direct labor and material and are incurred in preparing the 
equipment for its intended use. The validation costs are either amortized over the life of the related equipment or 
expensed as cost of sales when the product produced in the validation process is sold.

In addition, we capitalize certain internal use computer software development costs. If the software is an 

integral part of production assets, these costs are included in machinery and equipment and are amortized on a 
straight-line basis over the estimated useful lives of the related software, which generally range from three to five 
years.

F- 15

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

We generally depreciate or amortize the cost of our property, plant and equipment using the straight-line 

method over the estimated useful lives of the respective assets, which are summarized as follows:

Asset Category
Land
Buildings
Leasehold Improvements
Furniture and Fixtures
Machinery and Equipment
Computer Software and Hardware

Useful Lives
Not depreciated
15 to 40 years
Lesser of the useful life or the term of the respective lease
5 to 7 years
5 to 20 years
3 to 5 years

When we dispose of property, plant and equipment, we remove the associated cost and accumulated 

depreciation from the related accounts in our consolidated balance sheets and include any resulting gain or loss in 
our consolidated statements of income.

Intangible Assets

Our intangible assets consist of acquired and in-licensed rights and patents, developed technology, out-licensed 

patents, in-process research and development acquired after January 1, 2009, trademarks and trade names. Our 
intangible assets are recorded at fair value at the time of their acquisition and are stated in our consolidated 
balance sheets net of accumulated amortization and impairments, if applicable.

Intangible assets related to acquired and in-licensed rights and patents, developed technology and out-licensed 
patents are amortized over their estimated useful lives using the economic consumption method if anticipated future 
revenues can be reasonably estimated. The straight-line method is used when revenues cannot be reasonably 
estimated. Amortization is recorded as amortization of acquired intangible assets in our consolidated statements of 
income.

Acquired and in-licensed rights and patents primarily relate to obtaining the fair value of the U.S. and rest of 

world licenses to Forward Pharma A/S' (Forward Pharma) intellectual property, including Forward Pharma's 
intellectual property related to TECFIDERA, and our acquisition of all remaining rights to TYSABRI from Elan Pharma 
International, Ltd. (Elan), an affiliate of Elan Corporation, plc. Developed technology primarily relates to our AVONEX 
product, which was recorded in connection with the merger of Biogen, Inc. and IDEC Pharmaceuticals Corporation in 
2003. We amortize the intangible assets related to TECFIDERA, TYSABRI and AVONEX using the economic 
consumption method based on revenues generated from the products underlying the related intangible assets. An 
analysis of the anticipated lifetime revenues of TECFIDERA, TYSABRI and AVONEX is performed annually during our 
long-range planning cycle, which is generally updated in the third quarter of each year, and whenever events or 
changes in circumstances would significantly affect the anticipated lifetime revenues of TECFIDERA, TYSABRI or 
AVONEX.

Intangible assets related to trademarks, trade names and in-process research and development prior to 
commercialization are not amortized because they have indefinite lives; however, they are subject to review for 
impairment. We review our intangible assets with indefinite lives for impairment annually, as of October 31, and 
whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable.

F- 16

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Acquired In-process Research and Development (IPR&D)

Acquired IPR&D represents the fair value assigned to research and development assets that have not reached 
technological feasibility. The value assigned to acquired IPR&D is determined by estimating the costs to develop the 
acquired technology into commercially viable products, estimating the resulting revenues from the projects and 
discounting the net cash flows to present value. The revenues and costs projections used to value acquired IPR&D 
are, as applicable, reduced based on the probability of success of developing a new drug. Additionally, the 
projections consider the relevant market sizes and growth factors, expected trends in technology and the nature and 
expected timing of new product introductions by us and our competitors. The rates utilized to discount the net cash 
flows to their present value are commensurate with the stage of development of the projects and uncertainties in the 
economic estimates used in the projections. Upon the acquisition of IPR&D, we complete an assessment of whether 
our acquisition constitutes the purchase of a single asset or a group of assets. We consider multiple factors in this 
assessment, including the nature of the technology acquired, the presence or absence of separate cash flows, the 
development process and stage of completion, quantitative significance and our rationale for entering into the 
transaction.

If we acquire a business as defined under applicable accounting standards, then the acquired IPR&D is 

capitalized as an intangible asset. If we acquire an asset or group of assets that do not meet the definition of a 
business, then the acquired IPR&D is expensed on its acquisition date. Future costs to develop these assets are 
recorded to research and development expense as they are incurred. 

When performing our impairment assessment, we calculate the fair value using the same methodology as 
described above. If the carrying value of our acquired IPR&D exceeds its fair value, then the intangible asset is 
written-down to its fair value. Certain IPR&D programs have a fair value that is not significantly in excess of carrying 
value, including treatments for forms of neuropathic pain, such as trigeminal neuralgia (TGN). Such programs could 
become impaired if assumptions used in determining the fair value change. Impairments are recorded as 
amortization of acquired intangible assets in our consolidated statements of income.

Goodwill

Goodwill represents the difference between the purchase price and the fair value of the identifiable tangible 

and intangible net assets when accounted for using the purchase method of accounting. Goodwill is not amortized, 
but reviewed for impairment. Goodwill is reviewed annually, as of October 31, and whenever events or changes in 
circumstances indicate that the carrying value of the goodwill might not be recoverable.

We compare the fair value of our reporting unit to its carrying value. If the carrying value of the net assets 
assigned to the reporting unit exceeds the fair value of our reporting unit, we would record an impairment loss equal 
to the difference. As described in Note 25, Segment Information, to these consolidated financial statements, we 
operate in one operating segment which we consider our only reporting unit.

Impairment of Long-Lived Assets

Long-lived assets to be held and used, including property, plant and equipment and definite-lived intangible 
assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount 
of the assets or asset group may not be recoverable.

Determination of recoverability is based on an estimate of undiscounted future cash flows resulting from the 

use of the asset and its eventual disposition. In the event that such cash flows are not expected to be sufficient to 
recover the carrying amount of the assets, the assets are written-down to their fair values. Long-lived assets to be 
disposed of are carried at fair value less costs to sell.

F- 17

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Contingent Consideration

The consideration for our acquisitions often includes future payments that are contingent upon the occurrence 

of a particular event or events. For acquisitions completed before January 1, 2009, we record contingent 
consideration resulting from a business combination when the contingency is resolved. For acquisitions that qualify 
as business combinations completed after January 1, 2009, we record an obligation for such contingent payments at 
fair value on the acquisition date. We estimate the fair value of contingent consideration obligations through 
valuation models that incorporate probability-adjusted assumptions related to the achievement of the milestones 
and thus likelihood of making related payments. We revalue our contingent consideration obligations each reporting 
period. Changes in the fair value of our contingent consideration obligations are recognized in our consolidated 
statements of income. Changes in the fair value of the contingent consideration obligations can result from changes 
to one or multiple inputs, including adjustments to the discount rates, changes in the amount or timing of expected 
expenditures associated with product development, changes in the amount or timing of cash flows and reserves 
associated with products upon commercialization, changes in the assumed achievement or timing of any cumulative 
sales-based and development milestones, changes in the probability of certain clinical events and changes in the 
assumed probability associated with regulatory approval. 

Discount rates in our valuation models represent a measure of the credit risk associated with settling the 
liability. The period over which we discount our contingent obligations is based on the current development stage of 
the product candidates, our specific development plan for that product candidate adjusted for the probability of 
completing the development step, and when the contingent payments would be triggered. In estimating the 
probability of success, we utilize data regarding similar milestone events from several sources, including industry 
studies and our own experience. These fair value measurements are based on significant inputs not observable in 
the market. Significant judgment is employed in determining the appropriateness of these assumptions as of the 
acquisition date and for each subsequent period. Accordingly, changes in assumptions could have a material impact 
on the amount of contingent consideration expense we record in any given period.

Derivative Instruments and Hedging Activities

We recognize all derivative instruments as either assets or liabilities at fair value in our consolidated balance 
sheets. Changes in the fair value of derivatives are recorded each period in current earnings or accumulated other 
comprehensive income (loss), depending on whether a derivative is designated as part of a hedge transaction and, if 
so, the type of hedge transaction. We classify the cash flows from these instruments in the same category as the 
cash flows from the hedged items. We do not hold or issue derivative instruments for trading or speculative 
purposes.

We assess, both at inception and on an ongoing basis, whether the derivatives that are used in hedging 
transactions are highly effective in offsetting the changes in cash flows or fair values of the hedged items. We also 
assess hedge ineffectiveness on a quarterly basis and record the gain or loss related to the ineffective portion to 
current earnings. If we determine that a forecasted transaction is no longer probable of occurring, we discontinue 
hedge accounting for the affected portion of the hedge instrument, and any related unrealized gain or loss on the 
contract is recognized in current earnings.

Translation of Foreign Currencies

The functional currency for most of our foreign subsidiaries is their local currency. For our non-U.S. subsidiaries 
that transact in a functional currency other than the U.S. dollar, assets and liabilities are translated at current rates 
of exchange at the balance sheet date. Income and expense items are translated at the average foreign currency 
exchange rates for the period. Adjustments resulting from the translation of the financial statements of our foreign 
operations into U.S. dollars are excluded from the determination of net income and are recorded in accumulated 
other comprehensive income, a separate component of equity. For subsidiaries where the functional currency of the 
assets and liabilities differ from the local currency, non-monetary assets and liabilities are translated at the rate of 
exchange in effect on the date assets were acquired while monetary assets and liabilities are translated at current 
rates of exchange as of the balance sheet date. Income and expense items are translated at the average foreign 
currency rates for the period. Translation adjustments of these subsidiaries are included in other income (expense), 
net in our consolidated statements of income.

F- 18

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Royalty Cost of Sales

We make royalty payments to a number of third parties under license or purchase agreements associated with 
our acquisition of intellectual property. These royalty payments are typically calculated as a percentage (royalty rate) 
of the sales of our products in a particular year. That royalty rate may remain constant, increase or decrease within 
each year based on the total amount of sales during the annual period. Each quarterly period, we estimate our total 
royalty obligation for the full year and recognize the proportional amount as cost of sales based on actual quarterly 
sales as a percentage of full year estimated sales. For example, if the level of net sales in any calendar year 
increases the royalty rate within the year, we will record our cost of sales at an even rate over the year, based on the 
estimated blended royalty rate. 

Accounting for Share-Based Compensation

Our share-based compensation programs grant awards that have included stock options, restricted stock units 

that vest based on stock performance known as market stock units (MSUs), performance-vested restricted stock 
units that settle in cash (CSPUs), time-vested restricted stock units (RSUs), performance-vested restricted stock 
units that can be settled in cash or shares of our common stock (PUs) at the sole discretion of the Compensation 
and Management Development Committee of the Board of Directors and shares issued under our employee stock 
purchase plan (ESPP). We charge the estimated fair value of awards against income over the requisite service period, 
which is generally the vesting period. Where awards are made with non-substantive vesting periods (for instance, 
where a portion of the award vests upon retirement eligibility), we estimate and recognize expense based on the 
period from the grant date to the date the employee becomes retirement eligible.

The fair values of our stock option grants are estimated as of the date of grant using a Black-Scholes option 

valuation model. The estimated fair values of the stock options are then expensed over the options’ vesting periods.

The fair values of our MSUs are estimated using a lattice model with a Monte Carlo simulation. We apply an 

accelerated attribution method to recognize share-based compensation expense over the applicable service period, 
net of estimated forfeitures when accounting for our MSUs. The probability of actual shares expected to be earned is 
considered in the grant date valuation, therefore the expense is not adjusted to reflect the actual units earned.

The fair values of our RSUs are based on the market value of our stock on the date of grant. Compensation 

expense, net of forfeitures, for RSUs is recognized straight-line over the applicable service period.

We apply an accelerated attribution method to recognize share-based compensation expense when accounting 

for our CSPUs and PUs and the fair value of the liability is remeasured at the end of each reporting period through 
expected settlement. Compensation expense associated with CSPUs and PUs are based upon the stock price and 
the number of units expected to be earned after assessing the probability that certain performance criteria will be 
met and the associated targeted payout level that is forecasted will be achieved, net of estimated forfeitures. 
Cumulative adjustments are recorded each quarter to reflect changes in the stock price and estimated outcome of 
the performance-related conditions until the date results are determined and settled.

The purchase price of common stock under our ESPP is equal to 85% of the lesser of (i) the fair market value 

per share of the common stock on the first business day of an offering period and (ii) the fair market value per share 
of the common stock on the purchase date. The fair value of the discounted purchases made under our ESPP is 
calculated using the Black-Scholes model. The fair value of the look-back provision plus the 15% discount is 
recognized as compensation expense over the 90-day purchase period. 

Research and Development Expenses

Research and development expenses consist of upfront fees and milestones paid to collaborators and 
expenses incurred in performing research and development activities, which include compensation and benefits, 
facilities and overhead expenses, clinical trial expenses and fees paid to contract research organizations (CROs), 
clinical supply and manufacturing expenses, write-offs of inventory that was previously capitalized in anticipation of 
product launch and determined to no longer be realizable and other outside expenses. Research and development 
expenses are expensed as incurred. Payments we make for research and development services prior to the services 
being rendered are recorded as prepaid assets in our consolidated balance sheets and are expensed as the 
services are provided. We also accrue the costs of ongoing clinical trials associated with programs that have been 
terminated or discontinued for which there is no future economic benefit at the time the decision is made to 
terminate or discontinue the program.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

From time to time, we enter into development agreements in which we share expenses with a collaborative 

partner. We record payments received from our collaborative partners for their share of the development costs as a 
reduction of research and development expense, except as discussed in Note 20, Collaborative and Other 
Relationships, to these consolidated financial statements. Because an initial indication has been approved for both 
RITUXAN and GAZYVA, expenses incurred by Genentech in the ongoing development of RITUXAN and GAZYVA are not 
recorded as research and development expense, but rather reduce our share of profits recorded as a component of 
revenues from anti-CD20 therapeutic programs.

For collaborations with commercialized products, if we are the principal, we record revenues and the 

corresponding operating costs in their respective line items in our consolidated statements of income. If we are not 
the principal, we record operating costs as a reduction of revenue.

Selling, General and Administrative Expenses

Selling, general and administrative expenses are primarily comprised of compensation and benefits associated 

with sales and marketing, finance, human resources, legal, information technology and other administrative 
personnel, outside marketing, advertising and legal expenses and other general and administrative costs.

Advertising costs are expensed as incurred. For the years ended December 31, 2017, 2016 and 2015, 

advertising costs totaled $75.2 million, $106.3 million and $108.6 million, respectively.

Income Taxes

The provision for income taxes includes federal, state, local and foreign taxes. Income taxes are accounted for 

under the liability method. Deferred tax assets and liabilities are recognized for the estimated future tax 
consequences of temporary differences between the financial statement carrying amounts and their respective tax 
bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income 
in the year in which the temporary differences are expected to be recovered or settled. We evaluate the realizability 
of our deferred tax assets and establish a valuation allowance when it is more likely than not that all or a portion of 
deferred tax assets will not be realized.

All tax effects associated with intercompany transfers of assets within our consolidated group, both current and 

deferred, are recorded as a prepaid tax or deferred charge and recognized through our consolidated statements of 
income when the asset transferred is sold to a third party or otherwise recovered through amortization of the asset's 
remaining economic life. If the asset transferred becomes impaired, for example through the obsolescence of 
inventory or discontinuation of a research program, we will expense any remaining deferred charge or prepaid tax.

We account for uncertain tax positions using a “more-likely-than-not” threshold for recognizing and resolving 

uncertain tax positions. We evaluate uncertain tax positions on a quarterly basis and consider various factors 
including, but not limited to, changes in tax law, the measurement of tax positions taken or expected to be taken in 
tax returns, the effective settlement of matters subject to audit, information obtained during in process audit 
activities and changes in facts or circumstances related to a tax position. We also accrue for potential interest and 
penalties related to unrecognized tax benefits in income tax expense.

Contingencies

We are currently involved in various claims and legal proceedings. Loss contingency provisions are recorded if 

the potential loss from any claim, asserted or unasserted, or legal proceeding is considered probable and the 
amount can be reasonably estimated or a range of loss can be determined. These accruals represent management’s 
best estimate of probable loss. Disclosure also is provided when it is reasonably possible that a loss will be incurred 
or when it is reasonably possible that the amount of a loss will exceed the recorded provision. On a quarterly basis, 
we review the status of each significant matter and assess its potential financial exposure. Significant judgment is 
required in both the determination of probability and the determination as to whether an exposure is reasonably 
estimable. Because of uncertainties related to these matters, accruals are based only on the best information 
available at the time. As additional information becomes available, we reassess the potential liability related to 
pending claims and litigation and may change our estimates. These changes in the estimates of the potential 
liabilities could have a material impact on our consolidated results of operations and financial position.

Earnings per Share

Basic earnings per share is computed by dividing undistributed net income attributable to Biogen Inc. by the 

weighted-average number of common shares outstanding during the period. 

F- 20

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

New Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board 

(FASB) or other standard setting bodies that we adopt as of the specified effective date. Unless otherwise discussed 
below, we do not believe that the adoption of recently issued standards have or may have a material impact on our 
consolidated financial statements or disclosures.

In May 2014 the FASB issued Accounting Standards Update (ASU) No. 2014-09, Revenue from Contracts with 

Customers (Topic 606), which supersedes all existing revenue recognition requirements, including most industry-
specific guidance. This new standard requires a company to recognize revenue when it transfers goods or services to 
customers in an amount that reflects the consideration that the company expects to receive for those goods or 
services. The FASB subsequently issued amendments to ASU No. 2014-09 that have the same effective date and 
transition date. These new standards became effective for us on January 1, 2018, and will be adopted using the 
modified retrospective method through a cumulative-effect adjustment directly to retained earnings as of that date. 
We have performed a review of these new standards as compared to our current accounting policies for customer 
contracts and collaborative relationships. During the fourth quarter of 2017 we finalized our assessments over the 
impact that these new standards will have on our consolidated results of operations, financial position and 
disclosures. As of December 31, 2017, we have not identified any accounting changes that would materially impact 
the amount of reported revenues with respect to our product revenues, revenues from anti-CD20 therapeutic 
programs or other revenues; however, the adoption of these new standards may result in a change in the timing of 
revenue recognition related to certain of our contract manufacturing activities. As of December 31, 2017, we expect 
to recognize an immaterial adjustment to retained earnings reflecting the cumulative impact for the accounting 
changes related to certain contract manufacturing arrangements made upon adoption of these new standards.

In January 2016 the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): 

Recognition and Measurement of Financial Assets and Financial Liabilities. This new standard amends certain aspects 
of accounting and disclosure requirements for financial instruments, including the requirement that equity 
investments with readily determinable fair values are to be measured at fair value with any changes in fair value 
recognized in a company's results of operations. This new standard does not apply to investments accounted for 
under the equity method of accounting or those investments that result in consolidation of the investee. Equity 
investments that do not have readily determinable fair values may be measured at fair value or at cost minus 
impairment adjusted for changes in observable prices. A financial liability that is measured at fair value in 
accordance with the fair value option is required to be presented separately in other comprehensive income for the 
portion of the total change in the fair value resulting from change in the instrument-specific credit risk. In addition, a 
valuation allowance should be evaluated on deferred tax assets related to available-for-sale debt securities in 
combination with other deferred tax assets. This new standard became effective for us on January 1, 2018. Based 
on our current investment holdings, the adoption of this new standard is not expected to have a material impact on 
our consolidated financial position or results of operations; however, it will result in the reclassification of where we 
recognize changes in fair value related to certain investments prospectively.

In February 2016 the FASB issued ASU No. 2016-02, Leases (Topic 842). This new standard establishes a right-

of-use (ROU) model that requires all lessees recognize right-of-use assets and liabilities on their balance sheet that 
arise from leases with terms longer than 12 months as well as provide disclosures with respect to certain qualitative 
and quantitative information related to their leasing arrangements. This new standard will become effective for us on 
January 1, 2019. A modified retrospective transition approach is required for leases existing at, or entered into after, 
the beginning of the earliest comparative period presented in the financial statements, with certain practical 
expedients available. While we are currently evaluating the impact that this new standard may have on our 
consolidated results of operations, financial position and disclosures, we expect that the adoption of this new 
standard may materially affect the reported amount of total assets and total liabilities within our consolidated 
balance sheet with no material impact to our consolidated statement of income. We are unable to quantify the 
impact at this time as the ultimate impact of adopting this new standard will depend on the total amount of our 
lease commitments as of the adoption date. 

In March 2016 the FASB issued ASU No. 2016-09, Compensation - Stock Compensation (Topic 718): 

Improvements to Employee Share-Based Payment Accounting. This new standard requires recognition of the income 
tax effects of vested or settled awards in the income statement and involves several other aspects of the accounting 
for share-based payment transactions, including the income tax consequences and classification of awards as either 
equity or liabilities in the statement of cash flows. This new standard became effective for us on January 1, 2017. 
The adoption of this new standard did not have a material impact on our consolidated financial position, results of 

F- 21

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

operations or statement of cash flows; however, it has resulted in the reclassification of certain prior year amounts in 
our consolidated statements of cash flows to conform to our current year presentation. Specifically, amounts 
previously disclosed in net cash flows used in financing activities related to our excess tax benefit from share-based 
compensation have been reclassified to net cash flows provided by operating activities and amounts related to cash 
paid when withholding shares for tax withholding purposes, previously disclosed in net cash flows provided by 
operating activities, have been reclassified to net cash flows used in financing activities.

In October 2016 the FASB issued ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity Transfer of Assets 
Other Than Inventory. This new standard eliminates the deferral of the tax effects of intra-entity asset transfers other 
than inventory. As a result, the income tax consequences from the intra-entity transfer of an asset other than 
inventory and associated changes to deferred taxes will be recognized when the transfer occurs. This new standard 
became effective for us on January 1, 2018. We will adopt this new standard using the modified retrospective 
method, through a cumulative-effect adjustment directly to retained earnings as of the beginning of that date. Based 
on currently enacted tax rates, upon adoption, we will record additional deferred tax assets of approximately $0.5 
billion and an increase to retained earnings of approximately $0.5 billion. We will recognize incremental deferred 
income tax expense thereafter as these net deferred tax assets are utilized.

In January 2017 the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition 

of a Business. This new standard clarifies the definition of a business and provides a screen to determine when an 
integrated set of assets and activities is not a business. The screen requires that when substantially all of the fair 
value of the gross assets acquired (or disposed of) is concentrated in a single identifiable asset or a group of similar 
identifiable assets, the set is not a business. We elected to early adopt this new standard as of January 1, 2017, 
with prospective application to any business development transactions, including our recent asset acquisition of 
BIIB093 from Remedy Pharmaceuticals Inc. (Remedy) in May 2017. For additional information on this transaction, 
please read Note 2, Acquisitions, to these consolidated financial statements.

In January 2017 the FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the 

Test of Goodwill Impairment. This new standard eliminates Step 2 from the goodwill impairment test. Under the 
amendments in ASU No. 2017-04, an entity should recognize an impairment charge for the amount by which the 
carrying amount of a reporting unit exceeds that reporting unit’s fair value; however, the loss recognized should not 
exceed the total amount of goodwill allocated to that reporting unit. We elected to early adopt this new standard as 
of October 31, 2017, during our annual review of goodwill. The adoption of this new standard resulted in a change to 
our accounting policy; however, did not have an impact on our consolidated financial position or results of operations.

In March 2017 the FASB issued ASU No. 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 

310-20): Premium Amortization on Purchased Callable Debt Securities. This new standard amends the amortization 
period for certain purchased callable debt securities held at a premium by shortening the amortization period for the 
premium to the earliest call date. This new standard will become effective for us on January 1, 2019. We are 
currently evaluating the potential impact that this new standard may have on our consolidated financial position and 
results of operations.

In August 2017 the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements 

to Accounting for Hedging Activities. This new standard is intended to simplify hedge accounting by better aligning 
how an entity’s risk management activities and hedging relationships are presented in its financial statements and 
simplifies the application of hedge accounting guidance in certain situations. This new standard expands and refines 
hedge accounting for both non-financial and financial risk components and aligns the recognition and presentation of 
the effects of the hedging instrument and the hedged item in the financial statements. This new standard will 
become effective for us on January 1, 2019; however, early adoption is permitted. For cash flow hedges existing at 
the adoption date, this new standard requires adoption on a modified retrospective basis with a cumulative-effect 
adjustment to retained earnings as of the effective date. The amendments to presentation guidance and disclosure 
requirements are required to be adopted prospectively. We are currently evaluating the date upon which we will adopt 
this new standard and the impact this new standard may have on our consolidated financial statements. 

F- 22

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

2.      Acquisitions

Remedy Pharmaceuticals Inc.

In May 2017 we completed an asset purchase of the Phase 3-ready candidate, BIIB093 (intravenous 
glibencamide) (formerly known as CIRARA), from Remedy. The target indication for BIIB093 is large hemispheric 
infarction (LHI), a severe form of ischemic stroke where brain swelling (cerebral edema) often leads to a 
disproportionately large share of stroke-related morbidity and mortality. The U.S. Food and Drug Administration (FDA) 
recently granted BIIB093 Orphan Drug designation for severe cerebral edema in patients with acute ischemic stroke. 
The FDA has also granted BIIB093 Fast Track designation. 

Under this agreement, we are responsible for the future development and commercialization of BIIB093 and 

Remedy will share in the cost of development for the target indication for BIIB093 in LHI stroke.

We accounted for this transaction as an asset acquisition as we did not acquire any employees from Remedy 

nor did we acquire any significant processes required in the development of BIIB093. In connection with the closing 
of this transaction, we made an upfront payment of $120.0 million to Remedy, which was recorded as acquired in-
process research and development in our consolidated statements of income as BIIB093 has not yet reached 
technological feasibility. We also have agreed to pay Remedy certain development and sales based milestone 
payments that are substantially payable upon or after regulatory approval, as well as royalties on future commercial 
sales. 

Convergence Pharmaceuticals

In February 2015, we completed our acquisition of all of the outstanding stock of Convergence Pharmaceuticals 

(Convergence), a clinical-stage biopharmaceutical company with a focus on developing product candidates for 
neuropathic pain. Convergence’s lead candidate was a Phase 2 clinical candidate BIIB074 (formerly known as 
CNV1014802), which had demonstrated clinical activity in proof-of-concept studies for TGN. Additionally, BIIB074 had 
potential applicability in several other neuropathic pain states, including lumbosacral radiculopathy and 
erythromelalgia. 

The purchase price consisted of a $200.1 million cash payment at closing, plus contingent consideration in the 

form of development and approval milestones up to a maximum of $450.0 million, of which $350.0 million is 
associated with the development and approval of BIIB074 for the treatment of TGN. In connection with the closing of 
this transaction, we recorded a liability of $274.5 million representing the fair value of the contingent consideration 
resulting in an adjusted purchase price of $474.6 million. The separately identifiable assets and liabilities acquired 
were primarily comprised of $424.6 million and $128.3 million attributed to in-process research and development 
and goodwill, respectively. These amounts were partially offset by the establishment of a deferred tax liability for the 
acquired IPR&D intangible assets which had no tax basis. 

We attributed the goodwill recognized to the Convergence workforce's expertise in chronic pain research and 

clinical development and to establishing a deferred tax liability for the acquired IPR&D intangible assets. The 
goodwill was not tax deductible.

3. 

Hemophilia Spin-Off

On February 1, 2017, we completed the spin-off of our hemophilia business, Bioverativ, as an independent, 
publicly traded company trading under the symbol "BIVV" on the Nasdaq Global Select Market. The spin-off was 
accomplished through the distribution of all the then outstanding shares of common stock of Bioverativ to Biogen 
shareholders, who received one share of Bioverativ common stock for every two shares of Biogen common stock 
they owned. The separation and distribution was structured to be tax-free for shareholders for federal income tax 
purposes. Bioverativ assumed all of our rights and obligations under our collaboration agreement with Swedish 
Orphan Biovitrum AB (Sobi) and our collaboration and license agreement with Sangamo Biosciences Inc. (Sangamo).

In connection with the distribution, Biogen and Bioverativ entered into a separation agreement and various 
other agreements (including a transition services agreement, a tax matters agreement, a manufacturing and supply 
agreement, an employee matters agreement, an intellectual property matters agreement and certain other 
commercial agreements). These agreements govern the separation and distribution and the relationship between the 
two companies going forward. They also provide for the performance of services by each company for the benefit of 
the other for a period of time. In addition, under the separation agreement, Bioverativ is obligated to indemnify us for 

F- 23

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

liabilities that may exist relating to its business activities, whether incurred prior to or after the distribution, including 
any pending or future litigation.

The services under these agreements generally commenced on February 1, 2017 (the distribution date), and 

terminate within 12 months of the distribution date, with the exception of the manufacturing and supply agreement, 
which has an initial term of 5 years, with a 5 year extension at Bioverativ's sole discretion and a further 5 year 
extension with Bioverativ's and our consent. 

In connection with the distribution we made a net cash contribution to Bioverativ, during the first quarter of 

2017, totaling $302.7 million. The following table summarizes the assets and liabilities that were charged against 
equity as a result of the spin-off of our hemophilia business:

(In millions)

Assets

Cash............................................................................................................................... $
Accounts receivable .........................................................................................................
Inventory .........................................................................................................................
Property, plant and equipment, net ....................................................................................
Intangible assets, net.......................................................................................................
Goodwill ..........................................................................................................................
Other, net ........................................................................................................................
Assets transferred, net....................................................................................................... $

Liabilities

Accrued expenses and other current liabilities ................................................................... $
Other long-term liabilities..................................................................................................
Liabilities transferred, net................................................................................................... $

302.7

144.7

116.1

20.2

56.8

314.1

53.7

1,008.3

87.8

67.7

155.5

Pursuant to the terms of our agreements with Bioverativ, upon completion of the spin-off, we distributed 

ALPROLIX and ELOCTATE on behalf of Bioverativ until Bioverativ obtained appropriate regulatory authorizations in 
certain countries, including a Biologics License Application transfer in the U.S., which was received in September 
2017. Accordingly, commencing October 2017, we ceased distribution of ALPROLIX and ELOCTATE on behalf of 
Bioverativ under this arrangement.

Under the manufacturing and supply agreement, we manufacture and supply certain products and materials to 

Bioverativ. For the year ended December 31, 2017, we recognized $64.8 million in revenues in relation to these 
contract manufacturing services, which is reflected as a component of other royalty and corporate revenues in our 
consolidated statements of income. We also recorded $15.1 million as cost of sales in relation to these services 
during the year ended December 31, 2017.

Amounts earned under the non-manufacturing and supply related transaction service agreements are recorded 

as a reduction of costs and expenses in their respective expense line items. These amounts, which were primarily 
reflected as a reduction to selling, general and administrative expenses in our consolidated statements of income, 
were not significant for the year ended December 31, 2017.

Hemophilia related product revenues reflected in our consolidated statements of income for the years ended 
December 31, 2017, 2016 and 2015 totaled $74.4 million, $846.9 million and $554.2 million, respectively. Results 
for the year ended December 31, 2017 only reflect hemophilia-related product revenues through January 31, 2017.

Patents

Prior to the spin-off of our hemophilia business, we were awarded various methods of treatment and 

composition of matter patents related to ELOCTATE and ALPROLIX. Upon completion of the spin-off, these patents 
were transferred to the patent portfolio of Bioverativ.  

F- 24

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

4.      Restructuring, Business Transformation and Other Cost Saving Initiatives

2017 Corporate Strategy

In July 2017 we announced an updated strategic framework to optimize the value of our MS business while 
investing for the future across our core growth areas of MS and neuroimmunology, AD and dementia, movement 
disorders and neuromuscular diseases including SMA and ALS. We also plan to invest in emerging growth areas 
such as pain, ophthalmology, neuropsychiatry and acute neurology. In addition, we are employing innovative 
technologies to discover potential treatments for rare and genetic disorders, including new ways of treating diseases 
through gene therapy in the previously mentioned areas. 

In order to deliver positive results in the near term while investing in the next stages of our growth, we will focus 

on the following strategic priorities:

•  maximizing the resilience of our MS core business;

•  accelerating efforts in SMA as a significant new growth opportunity;

•  developing and expanding our neuroscience portfolio;

• 

focusing our capital allocation efforts to drive investment for future growth; and

•  creating a leaner and simpler operating model to streamline our operations and reallocate resources towards 

prioritized research and development and commercial value creation opportunities.

In October 2017, in connection with creating a leaner and simpler operating model, we approved a corporate 

restructuring program intended to streamline our operations and reallocate resources. We expect to make total non-
recurring operating and capital expenditures of up to $170.0 million, primarily in 2018, and our goal is to redirect 
resources of up to $400.0 million annually by 2020 to prioritized research and development and other value creation 
opportunities.

For the year ended December 31, 2017, we recognized charges in our consolidated statements of income 
totaling $19.4 million related to this effort, of which $18.5 million is included in selling, general and administrative 
expense and $0.9 million is reflected as restructuring charges. These restructuring charges, which were substantially 
incurred and paid in 2017, were primarily related to severance.

2016 Organizational Changes and Cost Saving Initiatives

2016 Restructuring Charges

During the third quarter of 2016 we initiated cost saving measures primarily intended to realign our 
organizational structure due to the changes in roles and workforce resulting from our decision to spin-off our 
hemophilia business, and to achieve further targeted cost reductions. For the year ended December 31, 2016, we 
recognized charges totaling $17.7 million related to this effort, which are in addition to, and separate from, the 2015 
restructuring charges described below. These amounts, which were substantially incurred and paid by the end of 
2016, were primarily related to severance and are reflected in restructuring charges in our consolidated statements 
of income.

Cambridge, MA Manufacturing Facility

In June 2016 following an evaluation of our current and future manufacturing capabilities and capacity needs, 
we determined that we intended to cease manufacturing and vacate our 67,000 square foot small-scale biologics 
manufacturing facility in Cambridge, MA and close and vacate our 46,000 square foot warehouse space in 
Somerville, MA.

In December 2016 we subleased our rights to the Cambridge, MA manufacturing facility to Brammer Bio 
MA, LLC (Brammer). Brammer also purchased from us certain manufacturing equipment, leasehold improvements 
and other assets in exchange for shares of Brammer common LLC interests and assumed manufacturing operations 
effective January 1, 2017. In December 2016 we closed and vacated our warehouse space in Somerville, MA.

Our departure from these facilities shortened the expected useful lives of certain leasehold improvements and 
other assets at these facilities. As a result, we recorded additional depreciation expense to reflect the assets' new 

F- 25

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

shorter useful lives. For the year ended December 31, 2016, we recognized approximately $45.5 million of this 
additional depreciation, which was recorded as cost of sales in our consolidated statements of income.

In the fourth quarter of 2016 we also recognized charges totaling $7.4 million for severance costs related to 

certain employees separated from Biogen in connection with our departure from these facilities. These amounts 
were substantially incurred and paid by the end of first quarter of 2017 and are reflected in restructuring charges in 
our consolidated statements of income for the year ended December 31, 2016.

2015 Cost Saving Initiatives

2015 Restructuring Charges

In October 2015, we announced a corporate restructuring, which included the termination of certain pipeline 

programs and an 11% reduction in workforce. Under this restructuring, cash payments were estimated to total 
approximately $120.0 million, of which $15.9 million were related to previously accrued 2015 incentive 
compensation, resulting in net restructuring charges totaling approximately $102.0 million. These amounts were 
substantially paid by the end of 2016.

During the years ended December 31, 2016 and 2015, we recognized $8.0 million and $93.4 million, 
respectively, of restructuring charges related to our 2015 restructuring program in our consolidated statements of 
income. Our restructuring reserve is included in accrued expenses and other in our consolidated balance sheets.

The following table summarizes the charges and spending related to our 2015 restructuring program during 

2017:

(In millions)
Restructuring reserve as of December 31, 2015 .................. $
Expense ............................................................................
Payments ..........................................................................
Adjustments to previous estimates, net ...............................
Restructuring reserve as of December 31, 2016 .................. $
Payments ..........................................................................
Restructuring reserve as of December 31, 2017 .................. $

Workforce
Reduction

Pipeline
Programs

Total

33.7 $
4.9
(31.2)
(5.2)
2.2 $
(1.7)
0.5 $

3.6 $
5.4
(9.0)
2.9
2.9 $
(2.9)

— $

37.3
10.3
(40.2)
(2.3)
5.1
(4.6)
0.5

5.    Reserves for Discounts and Allowances

An analysis of the change in reserves for discounts and allowances is summarized as follows:

(In millions)
2017
Beginning balance ........................................... $

Current provisions relating to sales in current
year..............................................................
Adjustments relating to prior years..................
Payments/returns relating to sales in current
year..............................................................
Payments/returns relating to sales in prior
years ............................................................
Ending balance................................................ $

Discounts

Contractual
Adjustments

Returns

Total

71.6 $

482.7 $

51.2 $

605.5

583.0
(0.1)

2,307.4
15.0

26.9
(8.9)

2,917.3
6.0

(475.8)

(1,756.9)

(0.1)

(2,232.8)

(69.1)
109.6 $

(442.2)
606.0 $

(23.1)
46.0 $

(534.4)
761.6

F- 26

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

(In millions)
2016
Beginning balance............................................ $

Current provisions relating to sales in current
year ..............................................................
Adjustments relating to prior years ..................
Payments/returns relating to sales in current
year ..............................................................
Payments/returns relating to sales in prior
years ............................................................
Ending balance ................................................ $

(In millions)
2015
Beginning balance ........................................... $

Current provisions relating to sales in current
year..............................................................
Adjustments relating to prior years..................
Payments/returns relating to sales in current
year..............................................................
Payments/returns relating to sales in prior
years ............................................................
Ending balance................................................ $

Discounts

Contractual
Adjustments

Returns

Total

56.1 $

548.7 $

57.9 $

662.7

592.6
(1.4)

2,044.5
1.5

30.9
(16.8)

2,668.0
(16.7)

(522.5)

(1,576.0)

(1.0)

(2,099.5)

(53.2)
71.6 $

(536.0)
482.7 $

(19.8)
51.2 $

(609.0)
605.5

Discounts

Contractual
Adjustments

Returns

Total

47.6 $

387.1 $

49.1 $

483.8

459.7
(1.3)

1,732.1
(16.3)

37.6
(14.7)

2,229.4
(32.3)

(405.9)

(1,258.1)

(2.6)

(1,666.6)

(44.0)
56.1 $

(296.1)
548.7 $

(11.5)
57.9 $

(351.6)
662.7

The total revenue-related reserves above, included in our consolidated balance sheets, are summarized as 

follows:

(In millions)
Reduction of accounts receivable ................................................................. $
Component of accrued expenses and other...................................................

Total revenue-related reserves.................................................................... $

As of December 31,

2017

2016

189.6 $
572.0
761.6 $

166.9
438.6
605.5

6.     

Inventory

The components of inventory are summarized as follows:

(In millions)
Raw materials ............................................................................................. $
Work in process ..........................................................................................
Finished goods ...........................................................................................

Total inventory........................................................................................... $

Balance Sheet Classification:
Inventory .................................................................................................... $
Investments and other assets ......................................................................

Total inventory........................................................................................... $

As of December 31,

2017

2016

162.4 $
605.7
157.4
925.5 $

902.7 $

22.8

925.5 $

170.4
698.7
170.3
1,039.4

1,001.6
37.8
1,039.4

Balances in the table above as of December 31, 2017 reflect the elimination of certain amounts transferred to 

Bioverativ in connection with the completion of the spin-off of our hemophilia business. Balances transferred to 
Bioverativ related to work in process and finished goods inventory totaled $84.5 million and $31.6 million, 
respectively. For additional information on the spin-off of our hemophilia business, please read Note 3, Hemophilia 
Spin-Off, to these consolidated financial statements.

F- 27

 
 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Long-term inventory, which primarily consists of work in process, is included in investments and other assets in 

our consolidated balance sheets.

Inventory amounts written down as a result of excess, obsolescence, unmarketability or other reasons are 

charged to cost of sales, and totaled $76.9 million, $48.2 million and $41.9 million for the years ended 
December 31, 2017, 2016 and 2015, respectively. 

7.     

Intangible Assets and Goodwill

Intangible Assets

Intangible assets, net of accumulated amortization, impairment charges and adjustments are summarized as 

follows:

(In millions)
Out-licensed patents ..
Developed technology.
In-process research
and development .......
Trademarks and trade
names.......................
Acquired and in-
licensed rights and
patents .....................
Total intangible
assets.................

Estimated Life

Cost

Accumulated
Amortization

Net

Cost

Accumulated
Amortization

As of December 31, 2017

As of December 31, 2016

13-23 years $ 543.3 $ (535.6) $
15-23 years
3,005.3
Indefinite until
commercialization

(2,689.0)

680.6

—

7.7 $ 543.3 $ (523.6) $

316.3

3,005.3

(2,634.3)

680.6

648.0

Indefinite

64.0

—

64.0

64.0

Net

19.7
371.0

648.0

64.0

—

—

4-18 years

3,971.4

(1,160.4)

2,811.0

3,481.7

(776.1)

2,705.6

$8,264.6 $ (4,385.0) $3,879.6 $7,742.3 $ (3,934.0) $3,808.3

Amortization of acquired intangible assets totaled $814.7 million, $385.6 million and $382.6 million for the 

years ended December 31, 2017, 2016 and 2015, respectively. 

Amortization of acquired intangible assets for the year ended December 31, 2017, includes $444.2 million of 
amortization and impairment charges related to our U.S. and rest of world licenses to Forward Pharma's intellectual 
property, including Forward Pharma's intellectual property related to TECFIDERA, as discussed below. Amortization of 
acquired intangible assets for 2017 also reflects a $31.2 million impairment charge related to the Article 20 
Procedure of ZINBRYTA in the E.U. For additional information on the Article 20 Procedure of ZINBRYTA and resulting 
impairment of ZINBRYTA related assets, please read Note 20, Collaborative and Other Relationships, to these 
consolidated financial statements. 

Balances in the table above as of December 31, 2017 also reflect the elimination of certain amounts 

transferred to Bioverativ in connection with the completion of the spin-off of our hemophilia business. For additional 
information on the spin-off of our hemophilia business, please read Note 3, Hemophilia Spin-Off, to these 
consolidated financial statements. In-process research and development balances include adjustments related to 
foreign currency exchange rate fluctuations.

Out-licensed Patents

Out-licensed patents to third-parties primarily relate to patents acquired in connection with the merger of 

Biogen, Inc. and IDEC Pharmaceuticals Corporation in 2003. 

Developed Technology

Developed technology primarily relates to our AVONEX product, which was recorded in connection with the 

merger of Biogen, Inc. and IDEC Pharmaceuticals Corporation in 2003. The net book value of this asset as of 
December 31, 2017 was $309.5 million. 

F- 28

 
 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

IPR&D

IPR&D represents the fair value assigned to research and development assets that we acquired and had not 

reached technological feasibility at the date of acquisition. Upon commercialization, we will determine the estimated 
useful life and amortize these amounts based upon an economic consumption method. The carrying value 
associated with our IPR&D assets as of December 31, 2017 and 2016 relates to the various IPR&D programs we 
acquired in connection with our acquisitions of Convergence, Stromedix Inc. (Stromedix) and Biogen International 
Neuroscience GmbH (BIN) in 2015, 2012 and 2010, respectively. These amounts have and will be adjusted for 
foreign exchange rate fluctuations. 

An analysis of anticipated lifetime revenues and anticipated development costs is performed annually during 
our long-range planning cycle, which was updated in the third quarter of 2017. This analysis is based upon certain 
assumptions that we evaluate on a periodic basis, including anticipated future product sales, the expected impact of 
changes in the amount of development costs and the probabilities of our programs succeeding, the introduction of 
new products by our competitors and changes in our commercial and pipeline product candidates.   

Acquired and In-licensed Rights and Patents

Acquired and in-licensed rights and patents primarily relate to our acquisition of all remaining rights to TYSABRI 

from Elan. The net book value of this asset as of December 31, 2017 was $2,236.2 million. 

The net change in acquired and in-licensed rights and patents during 2017 reflects $90.0 million in total 
milestone payments paid to Ionis Pharmaceuticals, Inc. (Ionis) for the approvals of SPINRAZA in the E.U. and Japan 
in June 2017 and July 2017, respectively, the $25.0 million milestone payment paid to Samsung Bioepis, for the 
approval of IMRALDI, an adalimumab biosimilar referencing HUMIRA, in the E.U. in August 2017, and the net carrying 
value recognized in relation to our acquisition of TECFIDERA license rights, as described below. These net increases 
were in part offset by amortization and the $31.2 million impairment charge related to the Article 20 Procedure of 
ZINBRYTA.

For additional information on our relationships with Ionis and Samsung Bioepis and the European Commission (EC) 
approved restrictions on the use of ZINBRYTA, please read Note 20, Collaborative and Other Relationships, to these 
consolidated financial statements.

TECFIDERA License Rights

In January 2017 we entered into a settlement and license agreement among Biogen Swiss Manufacturing 
GmbH, Biogen International Holding Ltd., Forward Pharma and certain related parties, which was effective as of 
February 1, 2017. Pursuant to this agreement, we obtained U.S. and rest of world licenses to Forward Pharma's 
intellectual property, including Forward Pharma's intellectual property related to TECFIDERA. In exchange, we paid 
Forward Pharma $1.25 billion in cash. During the fourth quarter of 2016, we recognized a pre-tax charge of $454.8 
million related to this agreement and in the first quarter of 2017 we recognized an intangible asset of $795.2 million 
related to this agreement. The pre-tax charge recognized in the fourth quarter of 2016 represented the fair value of 
our license to Forward Pharma’s intellectual property for the period April 2014, when we started selling TECFIDERA, 
through December 31, 2016. The intangible asset represented the fair value of the U.S. and rest of world licenses to 
Forward Pharma’s intellectual property related to TECFIDERA revenues for the period January 2017, the month in 
which we entered into this agreement, through December 2020, the last month before royalty payments could first 
commence pursuant to this agreement. 

We have two intellectual property disputes with Forward Pharma, one in the U.S. and one in the E.U., concerning 

intellectual property related to TECFIDERA. In March 2017 the U.S. intellectual property dispute was decided in our 
favor. Forward Pharma appealed to the U.S. Court of Appeals for the Federal Circuit and the appeal is pending. We 
evaluated the recoverability of the U.S. asset acquired from Forward Pharma and recorded an impairment charge in 
the first quarter of 2017 to adjust the carrying value of the acquired U.S. asset to fair value reflecting the impact of 
the developments in the U.S. legal dispute. In January 2018 the European Patent Office (EPO) announced its 
decision revoking Forward Pharma’s European Patent No. 2 801 355. Forward Pharma has stated that it expects to 
file an appeal to the Technical Board of Appeal of the EPO. Based upon our assessment of these rulings, we continue 
to amortize the remaining net book value of the U.S. and rest of world intangible assets in our consolidated 
statements of income utilizing an economic consumption model.

For additional information on these disputes, please read Note 21, Litigation, to these consolidated financial 

statements.

F- 29

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Estimated Future Amortization of Intangible Assets 

Our amortization expense is based on the economic consumption and impairment of intangible assets. Our 
most significant intangible assets are related to our TECFIDERA, AVONEX and TYSABRI products. Annually, during our 
long-range planning cycle, we perform an analysis of anticipated lifetime revenues of TECFIDERA, AVONEX and 
TYSABRI. This analysis is also updated whenever events or changes in circumstances would significantly affect the 
anticipated lifetime revenues of any of these products.

Our most recent long-range planning cycle was completed in the third quarter of 2017. Based upon this 
analysis, the estimated future amortization of acquired intangible assets for the next five years is expected to be as 
follows:

(In millions)

As of December 31, 2017

2018 ............................................................................................................................... $
2019 ...............................................................................................................................
2020 ...............................................................................................................................
2021 ...............................................................................................................................
2022 ...............................................................................................................................

423.5

401.8

381.6

254.3

242.3

Goodwill

The following table provides a roll forward of the changes in our goodwill balance:

(In millions)
Goodwill, beginning of year ........................................................................ $
Elimination of goodwill allocated to our hemophilia business .......................
Increase to goodwill ................................................................................
Other .....................................................................................................
Goodwill, end of year................................................................................. $

As of December 31,

2017

2016

3,669.3 $
(314.1)
1,267.3
10.0
4,632.5 $

2,663.8
—
1,026.9
(21.4)
3,669.3

The elimination of goodwill represents an allocation based upon the relative enterprise fair value of the 
hemophilia business as of the distribution date. For additional information on the spin-off of our hemophilia 
business, please read Note 3, Hemophilia Spin-Off, to these consolidated financial statements.

The increase in goodwill during 2017 and 2016 was related to $1.5 billion and $1.2 billion in contingent 
milestones achieved (exclusive of $232.7 million and $173.1 million in tax benefits), respectively, and payable to the 
former shareholders of Fumapharm AG or holders of their rights. 

Other includes changes related to foreign currency exchange rate fluctuations. As of December 31, 2017, we 

had no accumulated impairment losses related to goodwill.

 For additional information on future contingent payments to the former shareholders of Fumapharm AG or 

holders of their rights, please read Note 22, Commitments and Contingencies, to these consolidated financial 
statements.

F- 30

 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

8.      Fair Value Measurements

The tables below present information about our assets and liabilities that are regularly measured and carried at 

fair value and indicate the level within the fair value hierarchy of the valuation techniques we utilized to determine 
such fair value:

As of
December 31,
2017

Quoted
Prices in
Active
Markets
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

1,229.4 $

— $

1,229.4 $

(In millions)
Assets:

Cash equivalents ............................................. $
Marketable debt securities:

Corporate debt securities..............................
Government securities..................................
Mortgage and other asset backed securities ..
Marketable equity securities .............................
Derivative contracts..........................................
Plan assets for deferred compensation..............

Total........................................................ $

Liabilities:

2,609.8
1,919.3
643.4
11.8
2.7
28.5
6,444.9 $

Derivative contracts.......................................... $
Contingent consideration obligations .................

Total........................................................ $

111.3 $
523.6
634.9 $

111.3 $
—
111.3 $

—
523.6
523.6

As of
December 31,
2016

Quoted
Prices
in Active
Markets
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

2,039.6 $

— $

2,039.6 $

—

—
—
—
—
—
—
—

—

—
—
—
—
—
—
—

2,609.8
1,919.3
643.4
—
2.7
28.5
6,433.1 $

2,663.8
2,172.5
561.7
—
61.0
34.5
7,533.1 $

—
—
—
11.8
—
—
11.8 $

— $
—
— $

—
—
—
24.9
—
—
24.9 $

— $
—
— $

(In millions)
Assets:

Cash equivalents ............................................. $
Marketable debt securities:

Corporate debt securities..............................
Government securities..................................
Mortgage and other asset backed securities ..
Marketable equity securities .............................
Derivative contracts..........................................
Plan assets for deferred compensation..............

Total........................................................ $

Liabilities:

2,663.8
2,172.5
561.7
24.9
61.0
34.5
7,558.0 $

Derivative contracts.......................................... $
Contingent consideration obligations .................

Total........................................................ $

13.6 $

467.6
481.2 $

13.6 $
—
13.6 $

—
467.6
467.6

The fair value of Level 2 instruments classified as cash equivalents and marketable debt securities were 
determined through third-party pricing services. For a description of our validation procedures related to prices 
provided by third-party pricing services, please read Note 1, Summary of Significant Accounting Policies: Fair Value 
Measurements, to these consolidated financial statements.

F- 31

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Debt Instruments

The fair values of our debt instruments, which are Level 2 liabilities, are summarized as follows:

(In millions)
Notes payable to Fumedica........................................................................ $
6.875% Senior Notes due March 1, 2018...................................................
2.900% Senior Notes due September 15, 2020..........................................
3.625% Senior Notes due September 15, 2022..........................................
4.050% Senior Notes due September 15, 2025..........................................
5.200% Senior Notes due September 15, 2045..........................................

Total ...................................................................................................... $

As of December 31,

2017

2016

3.2 $

—
1,517.7
1,032.9
1,851.9
2,077.6
6,483.3 $

6.1
583.7
1,521.5
1,026.6
1,796.0
1,874.5
6,808.4

In November 2017 we redeemed our 6.875% Senior Notes due March 1, 2018 with an aggregate principal 

amount of $550.0 million. For information on this redemption please read Note 12, Indebtedness, to these 
consolidated financial statements.

The fair value of our notes payable to Fumedica was estimated using market observable inputs, including 

current interest and foreign currency exchange rates. The fair value of each series of our Senior Notes was 
determined through market, observable and corroborated sources. For additional information on our debt 
instruments, please read Note 12, Indebtedness, to these consolidated financial statements.

Contingent Consideration Obligations

In connection with our acquisitions of Convergence, Stromedix and BIN in 2015, 2012 and 2010, respectively, 

we agreed to make additional payments based upon the achievement of certain milestone events. The following 
table provides a roll forward of the fair values of our contingent consideration obligations, which includes Level 3 
measurements:

(In millions)
Fair value, beginning of year....................................................................... $
Changes in fair value...............................................................................
Payments and other ................................................................................
Fair value, end of year ............................................................................... $

As of December 31,

2017

2016

467.6 $

62.7
(6.7)
523.6 $

506.0
14.8
(53.2)
467.6

 As of December 31, 2017 and 2016, approximately $279.0 million and $246.8 million, respectively, of the fair 

value of our total contingent consideration obligations was reflected as a component of other long-term liabilities in 
our consolidated balance sheets with the remaining balance reflected as a component of accrued expenses and 
other. Changes in the fair value of our contingent consideration obligations are primarily due to changes in the 
expected timing and probabilities of success related to the achievement of certain developmental milestones and 
changes in the discount rate. Payments and other for 2016 includes $7.9 million of a Convergence milestone 
converted to a short-term obligation under the acquisition agreement.

There were no changes in valuation techniques or transfers between fair value measurement levels during the 

years ended December 31, 2017 and 2016. The fair values of the intangible assets and contingent consideration 
liabilities were based on a probability-adjusted discounted cash flow calculation using Level 3 fair value 
measurements and inputs including estimated revenues and probabilities of success. For additional information on 
the valuation techniques and inputs utilized in the valuation of our financial assets and liabilities, please read Note 
1, Summary of Significant Accounting Policies, to these consolidated financial statements.

F- 32

 
 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Convergence

In connection with our acquisition of Convergence in February 2015 we recorded a contingent consideration 

obligation of $274.5 million. This valuation was based on probability weighted net cash outflow projections of 
$450.0 million, discounted using a rate of 2.0%, which was the estimated cost of debt financing for market 
participants. This liability reflected the revised estimate from the date of acquisition for our initial clinical 
development plans, resulting probabilities of success and the timing of certain milestone payments. For additional 
information on this transaction, please read Note 2, Acquisitions, to these consolidated financial statements. 

As of December 31, 2017 and 2016, the fair value of this contingent consideration obligation was $259.0 

million and $258.9 million, respectively. Our most recent valuation was determined based upon net cash flow 
projections of $400.0 million, probability weighted and discounted using a rate of 2.4%, which is a measure of the 
credit risk associated with settling the liability. 

For 2017 compared to 2016, the net increase in the fair value of this obligation was primarily due to changes 

in the discount rate, partially offset by changes in the expected timing related to the achievement of certain 
remaining developmental milestones. Approximately $147.9 million is reflected as a component of accrued 
expenses and other in our consolidated balance sheets as we expect to make the payment within one year.

Stromedix Inc.

In connection with our acquisition of Stromedix in March 2012 we recorded a contingent consideration 
obligation of $122.2 million. As of December 31, 2017 and 2016, the fair value of this contingent consideration 
obligation was $162.4 million and $133.2 million, respectively. Our most recent valuation was determined based 
upon net cash outflow projections of $344.0 million, probability weighted and discounted using a rate of 2.4%, which 
is a measure of the credit risk associated with settling the liability. 

For 2017 compared to 2016, the net increase in the fair value of this obligation was primarily due to an 
increase in the probability of success related to the achievement of certain remaining developmental milestones, 
partially offset by changes in the discount rate. Approximately $76.7 million is reflected as a component of accrued 
expenses and other in our consolidated balance sheets as we expect to make the payment within one year.

Biogen Idec International Neuroscience GmbH

In connection with our acquisition of BIN in December 2010 we recorded a contingent consideration obligation 
of $81.2 million. As of December 31, 2017 and 2016, the fair value of this contingent consideration obligation was 
$102.2 million and $75.5 million, respectively. Our most recent valuation was determined based upon net cash 
outflow projections of $355.0 million, probability weighted and discounted using a rate of 2.8%, which is a measure 
of the credit risk associated with settling the liability. 

For 2017 compared to 2016, the net increase in the fair value of this obligation was primarily due to an 
increase in the probability of success related to the achievement of certain remaining developmental milestones, 
partially offset by a $6.7 million developmental milestone payment. Approximately $20.0 million is reflected as a 
component of accrued expenses and other in our consolidated balance sheets as we achieved the developmental 
milestone of dosing our first patient in our Phase 2 SPARK study of BIIB054 in Parkinson's disease in January 2018.

Acquired IPR&D

In connection with our acquisition of Convergence, we also allocated $424.6 million of the total purchase price 
to acquired IPR&D, which was capitalized as an intangible asset. The amount allocated to acquired IPR&D was based 
on significant inputs not observable in the market and thus represented a Level 3 fair value measurement. These 
assets will be tested for impairment annually until commercialization, after which time the IPR&D will be amortized 
over its estimated useful life using the economic consumption method. For additional information on this 
transaction, please read Note 2, Acquisitions, to these consolidated financial statements.

F- 33

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

9.    Financial Instruments

The following table summarizes our financial assets with maturities of less than 90 days from the date of 

purchase included in cash and cash equivalents in our consolidated balance sheets:

(In millions)
Commercial paper ...................................................................................... $
Overnight reverse repurchase agreements ....................................................
Money market funds ...................................................................................
Short-term debt securities...........................................................................

Total ........................................................................................................ $

As of December 31,

2017

2016

30.5 $
3.6
948.0
247.3
1,229.4 $

31.0
—
741.7
1,266.9
2,039.6

The carrying values of our commercial paper, including accrued interest, overnight reverse repurchase 
agreements, money market funds and our short-term debt securities approximate fair value due to their short-term 
maturities. 

The following tables summarize our marketable debt and equity securities, classified as available for sale:

As of December 31, 2017 (In millions)
Corporate debt securities

Fair
Value

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Amortized
Cost

Current ...................................................... $
Non-current ................................................

1,039.3 $
1,570.5

Government securities

Current ......................................................
Non-current ................................................

1,075.1
844.2

Mortgage and other asset backed securities

Current ......................................................
Non-current ................................................

Total marketable debt securities ................ $
Marketable equity securities, non-current........ $

0.8
642.6
5,172.5 $
11.8 $

— $
0.9

0.1
0.2

—
1.1
2.3 $
1.8 $

(0.2) $
—

1,039.5
1,569.6

(0.7)
(1.1)

—
(0.8)
(2.8) $
(4.4) $

1,075.7
845.1

0.8
642.3
5,173.0
14.4

As of December 31, 2016 (In millions)
Corporate debt securities

Fair
Value

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Amortized
Cost

Current ........................................................ $
Non-current..................................................

1,408.6 $
1,255.2

Government securities

Current ........................................................
Non-current..................................................

1,156.0
1,016.5

Mortgage and other asset backed securities

Current ........................................................
Non-current..................................................

Total marketable debt securities................ $
Marketable equity securities, non-current ......... $

4.0
557.7
5,398.0 $
24.9 $

0.2 $
1.2

0.2
0.5

—
0.8
2.9 $
0.7 $

(0.6) $
(4.7)

1,409.0
1,258.7

(0.3)
(3.4)

—
(2.2)
(11.2) $
(9.3) $

1,156.1
1,019.4

4.0
559.1
5,406.3
33.5

F- 34

 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Summary of Contractual Maturities: Available-for-Sale Securities

The estimated fair value and amortized cost of our marketable debt securities available-for-sale by contractual 

maturity are summarized as follows:

(In millions)
Due in one year or less................................... $
Due after one year through five years...............
Due after five years ........................................

Total available-for-sale securities ................... $

As of December 31, 2017

As of December 31, 2016

Estimated
Fair  Value

2,115.2 $
2,730.0
327.3
5,172.5 $

Amortized
Cost
2,116.0 $
2,730.0
327.0
5,173.0 $

Estimated
Fair  Value

2,568.6 $
2,552.6
276.8
5,398.0 $

Amortized
Cost
2,569.1
2,559.7
277.5
5,406.3

The average maturity of our marketable debt securities available-for-sale as of December 31, 2017 and 2016 

was 17 months and 12 months, respectively.

Proceeds from Marketable Debt Securities

The proceeds from maturities and sales of marketable debt securities and resulting realized gains and losses 

are summarized as follows:

(In millions)
Proceeds from maturities and sales..................................... $
Realized gains ................................................................... $
Realized losses.................................................................. $

For the Years Ended December 31,

2017

2016

2015

5,565.9 $
3.0 $
22.4 $

7,378.9 $
3.3 $
4.3 $

4,063.0
1.5
3.5

Realized losses for the year ended December 31, 2017 primarily relate to impairments recognized on certain of 
our available-for-sale marketable debt securities as we intend to sell these securities as a result of the Tax Cuts and 
Jobs Act of 2017 (the 2017 Tax Act), sales of agency mortgage-backed securities, corporate bonds and government 
securities. Realized losses for the year ended December 31, 2016 primarily relate to sales of corporate bonds, 
agency mortgage-backed securities and other asset-backed securities. Realized losses for the year ended 
December 31, 2015 primarily relate to sales of corporate bonds, agency mortgage-backed securities and other 
asset-backed securities.

Strategic Investments

As of December 31, 2017 and 2016, our strategic investment portfolio was comprised of investments totaling 

$85.8 million and $99.9 million, respectively, which are included in investments and other assets in our 
consolidated balance sheets. Our strategic investment portfolio includes investments in equity securities of certain 
biotechnology companies and investments in venture capital funds where the underlying investments are in equity 
securities of biotechnology companies. 

10.  Derivative Instruments

Foreign Currency Forward Contracts - Hedging Instruments

Due to the global nature of our operations, portions of our revenues and operating expenses are recorded in 

currencies other than the U.S. dollar. The value of revenues and operating expenses measured in U.S. dollars is 
therefore subject to changes in foreign currency exchange rates. In order to mitigate these changes we use foreign 
currency forward contracts to lock in exchange rates associated with a portion of our forecasted international 
revenues and operating expenses.

Foreign currency forward contracts in effect as of December 31, 2017 and 2016 had durations of 1 to 21 

months and 1 to 18 months, respectively. These contracts have been designated as cash flow hedges and 
accordingly, to the extent effective, any unrealized gains or losses on these foreign currency forward contracts are 
reported in accumulated other comprehensive income (loss) (referred to as AOCI in the tables below). Realized gains 
and losses for the effective portion of such contracts are recognized in revenues when the sale of product in the 
currency being hedged is recognized and in operating expenses when the expense in the currency being hedged is 
recorded. To the extent ineffective, hedge transaction gains and losses are reported in other income (expense), net.

F- 35

 
 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The notional value of foreign currency forward contracts that were entered into to hedge forecasted revenues 

and operating expenses is summarized as follows:

Foreign Currency: (In millions)
Euro .......................................................................................................... $
British pound sterling..................................................................................
Swiss francs ..............................................................................................
Canadian dollar ..........................................................................................

Total foreign currency forward contracts...................................................... $

Notional Amount
As of December 31,

2017

2016

1,875.6 $
150.9
88.7
83.5
2,198.7 $

871.7
—
—
—
871.7

The pre-tax portion of the fair value of these foreign currency forward contracts that was included in 

accumulated other comprehensive income (loss) in total equity reflected net losses of $113.0 million for the year 
ended December 31, 2017, and net gains of $49.8 million and $1.8 million for the years ended December 31, 2016 
and 2015, respectively. We expect the net losses of $113.0 million to be settled over the next 21 months, of which 
$98.5 million is expected to be settled over the next 12 months, with any amounts in accumulated other 
comprehensive income (loss) to be reported as an adjustment to revenue or operating expense. We consider the 
impact of our and our counterparties’ credit risk on the fair value of the contracts as well as the ability of each party 
to execute its contractual obligations. As of December 31, 2017 and 2016, credit risk did not change the fair value 
of our foreign currency forward contracts.

The following table summarizes the effect of foreign currency forward contracts designated as hedging 

instruments in our consolidated statements of income:

For the Years Ended December 31,

Net Gains/(Losses)
Reclassified from AOCI into Operating Income
(Effective Portion) (in millions)

Location

2017

2016

2015

Revenues .... $

(32.5) $

5.3 $

173.2

Operating
expenses..... $

0.6 $

(1.5) $

—

Interest Rate Contracts - Hedging Instruments

Net Gains/(Losses)
Recognized into Net Income
(Ineffective Portion) (in millions)

Location
Other
income
(expense) .... $
Other
income
(expense) .... $

2017

2016

2015

8.9 $

2.9 $

4.9

(0.2) $

0.1 $

—

We have entered into interest rate lock contracts or interest rate swap contracts on certain borrowing 
transactions to manage our exposure to interest rate changes and to reduce our overall cost of borrowing. 

Interest Rate Lock Contracts

During 2015 we entered into treasury rate locks, with an aggregated notional amount of $1.1 billion, which 
were designated as cash flow hedges to hedge against changes in the 10-year and 30-year U.S. treasury interest 
rates that could have impacted our anticipated debt offering. In connection with the issuance of our 4.05% and 
5.20% Senior Notes, as described in Note 12, Indebtedness, to these consolidated financial statements, we settled 
the treasury rate locks and realized an $8.5 million gain. As the hedging relationship was effective, the gain was 
recorded in AOCI and will be recognized in other income (expense), net over the life of the 4.05% and 5.20% Senior 
Notes.

F- 36

 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Interest Rate Swap Contracts

In connection with the issuance of our 2.90% Senior Notes, as described in Note 12, Indebtedness, to these 

consolidated financial statements, we entered into interest rate swaps with an aggregate notional amount of $675.0 
million, which expire on September 15, 2020. The interest rate swap contracts are designated as hedges of the fair 
value changes in the 2.90% Senior Notes attributable to changes in interest rates. Since the specific terms and 
notional amount of the swaps match the debt being hedged, it is assumed to be a highly effective hedge and all 
changes in the fair value of the swaps are recorded as a component of the 2.90% Senior Notes with no net impact 
recorded in income. Any net interest payments made or received on the interest rate swap contracts are recognized 
as a component of interest expense in our consolidated statements of income.

Foreign Currency Forward Contracts - Other Derivatives

We also enter into other foreign currency forward contracts, usually with durations of one month or less, to 
mitigate the foreign currency risk related to certain balance sheet positions. We have not elected hedge accounting 
for these transactions.

The aggregate notional amount of these outstanding foreign currency contracts was $564.9 million and $902.1 

million as of December 31, 2017 and 2016, respectively. Net gains of $4.5 million and net losses of $29.2 million 
and $23.8 million related to these contracts were recognized as a component of other income (expense), net, for the 
years ended December 31, 2017, 2016 and 2015, respectively.

Summary of Derivatives

While certain of our derivatives are subject to netting arrangements with our counterparties, we do not offset 

derivative assets and liabilities in our consolidated balance sheets.

The following table summarizes the fair value and presentation in our consolidated balance sheets of our 

outstanding derivatives including those designated as hedging instruments:

(In millions)
Hedging Instruments:

Balance Sheet Location

Fair Value
As of December 31, 2017

Asset derivatives ....................................... Other current assets.................................... $
Investments and other assets ...................... $
Liability derivatives .................................... Accrued expenses and other ........................ $

Other long-term liabilities .............................

Other Derivatives:

Asset derivatives ....................................... Other current assets.................................... $
Liability derivatives .................................... Accrued expenses and other ........................ $

0.7
0.2
84.7
23.6

1.8
3.0

(In millions)
Hedging Instruments:

Balance Sheet Location

Fair Value
As of December 31, 2016

Asset derivatives ....................................... Other current assets.................................... $
Investments and other assets ...................... $
Liability derivatives .................................... Other long-term liabilities ............................. $

Other Derivatives:

Asset derivatives ....................................... Other current assets.................................... $
Liability derivatives .................................... Accrued expenses and other ........................ $

50.4
6.6
4.6

4.0
9.0

F- 37

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

11.    Property, Plant and Equipment

Property, plant and equipment are recorded at historical cost, net of accumulated depreciation. Components of 

property, plant and equipment, net are summarized as follows:

(In millions)
Land........................................................................................................ $
Buildings..................................................................................................
Leasehold improvements ..........................................................................
Machinery and equipment .........................................................................
Computer software and hardware...............................................................
Furniture and fixtures ................................................................................
Construction in progress ...........................................................................
Total cost...............................................................................................
Less: accumulated depreciation ................................................................

Total property, plant and equipment, net ................................................... $

As of December 31,

2017

2016

141.2 $

1,213.6
80.6
1,207.7
767.1
55.3
1,276.0
4,741.5
(1,559.1)
3,182.4 $

137.8
1,107.8
123.7
1,105.8
746.8
60.6
658.6
3,941.1
(1,439.3)
2,501.8

Depreciation expense totaled $266.3 million, $309.3 million and $217.9 million for 2017, 2016 and 2015, 

respectively.

For 2017, 2016 and 2015, we capitalized interest costs related to construction in progress totaling 

approximately $30.7 million, $12.9 million and $10.4 million, respectively. The increase in capitalized interest costs 
is primarily due to the construction of our Solothurn, Switzerland facility, as discussed below.

Solothurn, Switzerland Facility

During the first quarter of 2016 we purchased land in Solothurn, Switzerland for 64.4 million Swiss Francs 

(approximately $62.5 million) and are building a large-scale biologics manufacturing facility at this site. We expect 
this facility to be operational by the end of the decade. Upon completion, the facility will include 393,000 square feet 
related to a large-scale biologics manufacturing facility, 290,000 square feet of warehouse, utilities and support 
space and 51,000 square feet of administrative space. As of December 31, 2017 and 2016, we had approximately 
$1.2 billion and $481.5 million, respectively, capitalized as construction in progress related to this facility. 

Research Triangle Park Facility Purchase

In August 2015 we completed the purchase of a drug product manufacturing facility and supporting 
infrastructure in Research Triangle Park (RTP), NC from Eisai Inc. (Eisai). The $104.8 million purchase price was 
comprised of $58.6 million for buildings, $25.9 million for machinery and equipment and $20.3 million for land.

In August 2015 we also amended our existing 10-year lease related to Eisai's oral solid dose products 
manufacturing facility in RTP, NC. The amended lease provided for a three-year term and our agreement to purchase 
the facility upon expiration of the lease term or at Eisai's option, their completion of certain activities at the facility. 
Upon signing, we recognized assets along with a corresponding financing obligation in our consolidated balance 
sheet of $20.3 million, the net present value of the future minimum lease payments. These assets were recorded as 
a component of buildings and machinery and equipment. In December 2017, upon the earlier than expected 
completion of Eisai's activities, we completed our purchase of this facility for $17.2 million.

F- 38

 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

12.  

Indebtedness

Our indebtedness is summarized as follows:

(In millions)
Current portion:

As of December 31,

2017

2016

Notes payable to Fumedica...................................................................... $
Financing arrangement for the purchase of the RTP facility.........................

Current portion of notes payable and other financing arrangements ........ $

Non-current portion:

6.875% Senior Notes due March 1, 2018............................................... $
2.900% Senior Notes due September 15, 2020......................................
3.625% Senior Notes due September 15, 2022......................................
4.050% Senior Notes due September 15, 2025......................................
5.200% Senior Notes due September 15, 2045......................................
Notes payable to Fumedica......................................................................
Financing arrangement for the purchase of the RTP facility.........................

3.2 $

—

3.2 $

— $

1,482.4
994.3
1,736.3
1,722.0
—
—

Non-current portion of notes payable and other financing arrangements .. $

5,935.0 $

3.0
1.7

4.7

558.5
1,485.3
993.2
1,734.8
1,721.5
3.0
16.4

6,512.7

6.875% Senior Notes due March 1, 2018

On March 4, 2008, we issued $550.0 million aggregate principal amount of 6.875% Senior Notes due 
March 1, 2018 at 99.184% of par. These notes were senior unsecured obligations. We also entered into interest 
rate swap contracts where we received a fixed rate and paid a variable rate. These contracts were terminated in 
December 2008. Upon termination of these contracts, the carrying amount of these notes were increased by $62.8 
million with this amount being amortized using the effective interest rate method over the remaining life of the 
Senior Notes and recognized as a reduction of interest expense.

In November 2017 we redeemed these notes prior to their maturity and recognized a net charge of $5.2 million 

upon the extinguishment of these notes. This charge, which was recognized in interest expense in other income 
(expense) net in our consolidated statements of income for the year ended December 31, 2017, reflects the 
payment of a $7.7 million early call premium and the write off of remaining unamortized original debt issuance costs 
and discount balances, partially offset by a $2.9 million gain related to the remaining unamortized balance of the 
interest rate swap liability discussed above.

2015 Senior Notes

The following is a summary of our principal indebtedness as of December 31, 2017:

•  $1.5 billion aggregate principal amount of 2.90% Senior Notes due September 15, 2020, valued at 99.792% of 

par;

•  $1.0 billion aggregate principal amount of 3.625% Senior Notes due September 15, 2022, valued at 99.920% 

of par;

•  $1.75 billion aggregate principal amount of 4.05% Senior Notes due September 15, 2025, valued at 99.764% 

of par; and

•  $1.75 billion aggregate principal amount of 5.20% Senior Notes due September 15, 2045, valued at 99.294% 

of par.

The costs associated with these offerings of approximately $47.5 million have been recorded as a reduction to 

the carrying amount of the debt in our consolidated balance sheet. These costs along with the discounts will be 
amortized as additional interest expense using the effective interest rate method over the period from issuance 
through maturity. 

These notes are senior unsecured obligations. These Senior Notes may be redeemed at our option at any time 

at 100% of the principal amount plus accrued interest and a specified make-whole amount. These Senior Notes 

F- 39

 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

contain a change of control provision that may require us to purchase the notes at a price equal to 101% of the 
principal amount plus accrued and unpaid interest to the date of purchase under certain circumstances.

In connection with the 2.90% Senior Notes offering due in 2020, we entered into interest rate swap contracts. 

The carrying value of the 2.90% Senior Notes includes approximately $10.1 million related to changes in the fair 
value of these contracts. For additional information on our interest rate contracts, please read Note 10, Derivative 
Instruments, to these consolidated financial statements.

Notes Payable to Fumedica

In connection with our 2006 distribution agreement with Fumedica, we issued notes totaling 61.4 million Swiss 

Francs that are payable to Fumedica in varying amounts from June 2008 through June 2018. Our remaining note 
payable to Fumedica, payable in June 2018, had a carrying value of 3.1 million Swiss Francs ($3.2 million) and 6.2 
million Swiss Francs ($6.0 million) as of December 31, 2017 and 2016, respectively.

Credit Facility

In August 2015 we entered into a $1.0 billion, five-year senior unsecured revolving credit facility under which 

we are permitted to draw funds for working capital and general corporate purposes. The terms of the revolving credit 
facility include a financial covenant that requires us not to exceed a maximum consolidated leverage ratio. As of 
December 31, 2017, we had no outstanding borrowings and were in compliance with all covenants under this facility.

Financing Arrangement

During 2015 we recorded a financing obligation in relation to the amendment of our lease agreement for 
Eisai's oral solid dose products manufacturing facility in RTP, NC. In December 2017 we completed the purchase of 
this facility for $17.2 million and derecognized the remaining unamortized portion of the financing obligation from 
our consolidated balance sheet as of that date. For additional information on this transaction, please read Note 11, 
Property, Plant and Equipment, to these consolidated financial statements.

Debt Maturity

The total gross payments, excluding our financing arrangement, due under our debt arrangements are as 

follows:

(In millions)
2018 ............................................................................................................................ $
2019 ............................................................................................................................
2020 ............................................................................................................................
2021 ............................................................................................................................
2022 ............................................................................................................................
2023 and thereafter.......................................................................................................

Total ....................................................................................................................... $

As of December 31, 2017
3.2
—
1,500.0
—
1,000.0
3,500.0
6,003.2

The fair value of our debt is disclosed in Note 8, Fair Value Measurements, to these consolidated financial 

statements.

13.  

 Equity

Preferred Stock

We have 8.0 million shares of Preferred Stock authorized, of which 1.75 million shares are authorized as 

Series A, 1.0 million shares are authorized as Series X junior participating and 5.25 million shares are 
undesignated. Shares may be issued without a vote or action of shareholders from time to time in classes or series 
with the designations, powers, preferences, and the relative, participating, optional or other special rights of the 
shares of each such class or series and any qualifications, limitations or restrictions thereon as set forth in the 
instruments governing such shares. Any such Preferred Stock may rank prior to common stock as to dividend rights, 
liquidation preference or both, and may have full or limited voting rights and may be convertible into shares of 
common stock. No shares of Preferred Stock were issued and outstanding during 2017, 2016 and 2015.

F- 40

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Common Stock

The following table describes the number of shares authorized, issued and outstanding of our common stock 

as of December 31, 2017 and 2016:

(In millions)
Common stock ......................

Authorized

Issued

1,000.0

235.3

Outstanding
211.5

Authorized

Issued

Outstanding

1,000.0

238.5

215.9

As of December 31, 2017

As of December 31, 2016

Share Repurchases

In July 2016 our Board of Directors authorized a program to repurchase up to $5.0 billion of our common stock 
(2016 Share Repurchase Program). This authorization does not have an expiration date. All share repurchases under 
this authorization will be retired. Under this authorization, we repurchased and retired 3.7 million and 3.3 million 
shares of common stock during the years ended December 31, 2017 and 2016, respectively, at a cost of $1.0 
billion for each year. As of December 31, 2017, approximately $3.0 billion remains available for share repurchases 
under this authorization.

In May 2015 our Board of Directors authorized a program to repurchase up to $5.0 billion of our common stock 

(2015 Share Repurchase Program). All shares repurchased under this authorization were retired. Our 2015 Share 
Repurchase Program was completed as of December 31, 2015. Under this authorization, we repurchased and retired 
approximately 16.8 million shares of common stock at a cost of $5.0 billion during the year ended December 31, 
2015.

In February 2011 our Board of Directors authorized a program to repurchase up to 20.0 million shares of our 

common stock (2011 Share Repurchase Program). Shares repurchased under this authorization were principally 
used to offset common stock issuances under our share-based compensation programs. Our 2011 Share 
Repurchase Program was completed as of March 31, 2017. Under this authorization, we repurchased 1.2 million 
shares of common stock at a cost of $365.4 million during the year ended December 31, 2017. We did not 
repurchase any shares of common stock under this authorization during the years ended December 31, 2016 and 
2015. 

14.  

 Accumulated Other Comprehensive Income (Loss)

The following table summarizes the changes in accumulated other comprehensive income (loss), net of tax by 

component:

(In millions)

Unrealized Gains
(Losses) on
Securities
Available for Sale,
net of tax

Unrealized Gains
(Losses) on Cash
Flow Hedges, net
of tax

Unfunded Status
of Postretirement
Benefit Plans, net
of tax

Translation
Adjustments

Total

Balance, December 31, 2016 .. $

(10.8) $

57.8 $

(32.7) $

(334.2) $

(319.9)

Other comprehensive
income (loss) before
reclassifications..................
Amounts reclassified from
accumulated other
comprehensive income
(loss) .................................

Net current period other
comprehensive income (loss) .
Balance, December 31, 2017 .. $

(3.5)

(193.8)

(4.1)

158.7

(42.7)

12.7

9.2

31.5

(162.3)

—

(4.1)

—

158.7

44.2

1.5

(1.6) $

(104.5) $

(36.8) $

(175.5) $

(318.4)

F- 41

 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

(In millions)
Balance, December 31, 2015 .. $

Other comprehensive
income (loss) before
reclassifications..................
Amounts reclassified from
accumulated other
comprehensive income
(loss) .................................

Net current period other
comprehensive income (loss) .
Balance, December 31, 2016 .. $

Unrealized Gains
(Losses) on
Securities
Available for Sale,
net of tax

Unrealized Gains
(Losses) on Cash
Flow Hedges, net
of tax

Unfunded Status
of Postretirement
Benefit Plans, net
of tax

Translation
Adjustments

Total

(0.8) $

10.2 $

(37.8) $

(195.6) $

(224.0)

(10.6)

51.6

5.1

(138.6)

(92.5)

0.6

(10.0)

(10.8) $

(4.0)

47.6

—

5.1

57.8 $

(32.7) $

(334.2) $

(138.6)

(95.9)

(319.9)

—

(3.4)

(In millions)

Unrealized Gains
(Losses) on
Securities
Available for Sale,
net of tax

Unrealized Gains
(Losses) on Cash
Flow Hedges, net
of tax

Unfunded Status
of Postretirement
Benefit Plans, net
of tax

Translation
Adjustments

Total

Balance, December 31, 2014 .. $

(0.4) $

71.7 $

(31.6) $

(99.2) $

(59.5)

(1.7)

110.8

(6.2)

(96.4)

6.5

Other comprehensive
income (loss) before
reclassifications..................
Amounts reclassified from
accumulated other
comprehensive income
(loss) .................................

Net current period other
comprehensive income (loss) .
Balance, December 31, 2015 .. $

(0.4)

(0.8) $

(61.5)

(96.4)

10.2 $

(37.8) $

(195.6) $

(164.5)

(224.0)

1.3

(172.3)

—

(171.0)

—

(6.2)

The following table summarizes the amounts reclassified from accumulated other comprehensive income:

Amounts Reclassified from
Accumulated Other Comprehensive Income

For the Years Ended December 31,

(In millions)

Income Statement Location

2017

2016

2015

Gains (losses) on securities
available for sale..................... Other income (expense) ...... $

Income tax benefit
(expense)...........................

(19.5) $

(0.9) $

6.8

0.3

Gains (losses) on cash flow
hedges ................................... Revenues...........................
Operating expenses ............
Other income (expense) ......
Income tax benefit
(expense)...........................

(32.5)

0.6

0.3

0.1

5.3

(1.5)

0.2

—

(2.0)

0.7

173.2

—

(0.1)

(0.8)

Total reclassifications, net of
tax .........................................

$

(44.2) $

3.4 $

171.0

F- 42

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

15.  

 Earnings per Share

Basic and diluted earnings per share are calculated as follows:

(In millions)
Numerator:

For the Years Ended December 31,

2017

2016

2015

Net income attributable to Biogen Inc................................. $

2,539.1 $

3,702.8 $

3,547.0

Denominator:

Weighted average number of common shares outstanding...

Effect of dilutive securities:

Stock options and employee stock purchase plan ...............
Time-vested restricted stock units......................................
Market stock units............................................................
Dilutive potential common shares ........................................
Shares used in calculating diluted earnings per share .....

212.6

0.1
0.2
0.1
0.4
213.0

218.4

0.1
0.2
0.1
0.4
218.8

230.7

0.1
0.3
0.1
0.5
231.2

Amounts excluded from the calculation of net income per diluted share because their effects were anti-dilutive 

were insignificant.

Earnings per share for the years ended December 31, 2017, 2016 and 2015 reflects, on a weighted average 
basis, the repurchase of 3.7 million shares, 0.7 million shares and 4.6 million shares, respectively, of our common 
stock under our share repurchase authorizations.

The adjustments related to the spin-off of our hemophilia business did not have a material impact on the 
potentially dilutive securities to be considered in the calculation of diluted earnings per share of common stock.

16.   Share-based Payments

Share-based Compensation Expense

The following table summarizes share-based compensation expense included in our consolidated statements of 

income:

(In millions)
Research and development ................................................... $
Selling, general and administrative.........................................
Restructuring charges ...........................................................
Subtotal .............................................................................
Capitalized share-based compensation costs ..........................
Share-based compensation expense included in total cost
and expenses .....................................................................

Income tax effect ..................................................................
Share-based compensation expense included in net income
attributable to Biogen Inc. ................................................... $

For the Years Ended December 31,

2017

2016

2015

74.0 $
95.7
—
169.7
(9.6)

160.1
(42.8)

84.5 $

121.7
(1.8)
204.4
(14.6)

189.8
(54.0)

88.6
127.3
(8.6)
207.3
(11.0)

196.3
(55.8)

117.3 $

135.8 $

140.5

F- 43

 
 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The following table summarizes share-based compensation expense associated with each of our share-based 

compensation programs:

(In millions)
Market stock units ................................................................ $
Time-vested restricted stock units ..........................................
Cash settled performance units .............................................
Performance units.................................................................
Employee stock purchase plan...............................................
Subtotal .............................................................................
Capitalized share-based compensation costs ..........................
Share-based compensation expense included in total cost
and expenses ..................................................................... $

For the Years Ended December 31,

2017

2016

2015

22.4 $

38.4 $

107.3
18.4
12.3
9.3
169.7
(9.6)

120.0
16.3
18.6
11.1
204.4
(14.6)

38.1
119.0
22.4
13.9
13.9
207.3
(11.0)

160.1 $

189.8 $

196.3

As of December 31, 2017, unrecognized compensation cost related to unvested share-based compensation 
was approximately $168.0 million, net of estimated forfeitures. We expect to recognize the cost of these unvested 
awards over a weighted-average period of 1.9 years.

Spin-off Related Equity Adjustments

Pursuant to an employee matters agreement entered into in connection with the spin-off of our hemophilia 
business and the provisions of our existing share-based compensation arrangements, we made certain adjustments 
to the number and terms of our outstanding stock options, RSUs, CSPUs and other share-based awards to preserve 
the intrinsic value of the awards immediately before and after the spin-off. For purposes of the vesting of these 
equity awards, continued employment or service with Biogen or with Bioverativ was treated as continued employment 
for purposes of both Biogen’s and Bioverativ’s equity awards with the outstanding awards continuing to vest over 
their respective original vesting periods. Outstanding unvested awards for employees transferring to Bioverativ were 
converted to unvested Bioverativ awards.

Adjustments to the number of our share-based compensation awards were made using an adjustment ratio 

based upon the weighted-average closing price of our common stock for the 10 calendar days prior to the effective 
date of the spin-off and the volume-weighted average prices for the 10 calendar days of our common stock following 
the effective date of the spin-off. For stock options, the exercise prices of the awards were modified to maintain the 
pre-spin intrinsic value of the awards in relation to the post-spin stock price of Biogen. The difference between the 
fair value of the awards based upon the adjustment ratio and the opening price on the distribution date was not 
material.

Share-Based Compensation Plans

We have three share-based compensation plans pursuant to which awards are currently being made: (i) the 

Biogen Inc. 2006 Non-Employee Directors Equity Plan (2006 Directors Plan); (ii) the Biogen Inc. 2017 Omnibus 
Equity Plan (2017 Omnibus Equity Plan); and (iii) the Biogen Inc. 2015 Employee Stock Purchase Plan (2015 ESPP). 

Directors Plan

In May 2006 our shareholders approved the 2006 Directors Plan for share-based awards to our directors. 

Awards granted from the 2006 Directors Plan may include stock options, shares of restricted stock, RSUs, stock 
appreciation rights and other awards in such amounts and with such terms and conditions as may be determined by 
a committee of our Board of Directors, subject to the provisions of the plan. We have reserved a total of 1.6 million 
shares of common stock for issuance under the 2006 Directors Plan. The 2006 Directors Plan provides that awards 
other than stock options and stock appreciation rights will be counted against the total number of shares reserved 
under the plan in a 1.5-to-1 ratio. In June 2015 our shareholders approved an amendment to extend the term of the 
2006 Directors Plan until June 2025.

F- 44

 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Omnibus Plan

In June 2017 our shareholders approved the 2017 Omnibus Equity Plan for share-based awards to our 
employees. Awards granted from the 2017 Omnibus Equity Plan may include stock options, shares of restricted 
stock, RSUs, performance shares, stock appreciation rights and other awards in such amounts and with such terms 
and conditions as may be determined by a committee of our Board of Directors, subject to the provisions of the plan. 
Shares of common stock available for grant under the 2017 Omnibus Equity Plan consist of 8.0 million shares 
reserved for this purpose, plus shares of common stock that remained available for grant under our 2008 Omnibus 
Equity Plan as of June 7, 2017 or that could again become available for grant if outstanding awards under the 2008 
Omnibus Equity Plan as of June 7, 2017 are cancelled, surrendered or terminated in whole or in part. The 2017 
Omnibus Equity Plan provides that awards other than stock options and stock appreciation rights will be counted 
against the total number of shares available under the plan in a 1.5-to-1 ratio.

We have not made any awards pursuant to the 2008 Omnibus Equity Plan since our shareholders approved the 
2017 Omnibus Equity Plan, and do not intend to make any awards pursuant to the 2008 Omnibus Equity Plan in the 
future, except that unused shares under the 2008 Omnibus Equity Plan have been carried over for use under the 
2017 Omnibus Equity Plan.

Stock Options

We currently do not grant stock options to our employees or directors. Outstanding stock options previously 
granted to our employees and directors generally have a ten-year term and vest over a period of between one and 
four years, provided the individual continues to serve at Biogen through the vesting dates. Options granted under all 
plans are exercisable at a price per share not less than the fair market value of the underlying common stock on the 
date of grant. The estimated fair value of options, including the effect of estimated forfeitures, is recognized over the 
options’ vesting periods. The fair value of the stock options granted in 2010 was estimated as of the date of grant 
using a Black-Scholes option valuation model. There were no grants of stock options made in 2017, 2016 and 
2015. As of December 31, 2017, all outstanding options were exercisable.

The expected life of options granted is derived using assumed exercise rates based on historical exercise 
patterns and represents the period of time that options granted are expected to be outstanding. Expected stock 
price volatility is based upon implied volatility for our exchange-traded options and other factors, including historical 
volatility. After assessing all available information on either historical volatility, implied volatility or both, we have 
concluded that a combination of both historical and implied volatility provides the best estimate of expected volatility. 
The risk-free interest rate used is determined by the market yield curve based upon risk-free interest rates 
established by the Federal Reserve, or non-coupon bonds that have maturities equal to the expected term. The 
dividend yield of zero is based upon the fact that we have not historically granted cash dividends, and do not expect 
to issue dividends in the foreseeable future. Stock options granted prior to January 1, 2006 were valued based on 
the grant date fair value of those awards, using the Black-Scholes option pricing model, as previously calculated for 
pro-forma disclosures.

The following table summarizes our stock option activity:

Outstanding at December 31, 2016 ............................................................
Hemophilia spin-off adjustment .................................................................
Granted ...................................................................................................
Exercised.................................................................................................
Cancelled ................................................................................................
Outstanding at December 31, 2017 ............................................................

Shares

66,000 $
— $
— $
(14,000) $
(10,000) $
42,000 $

Weighted
Average
Exercise
Price

54.06
—
—
50.89
55.11
53.83

The total intrinsic values of options exercised in 2017, 2016 and 2015 totaled $3.4 million, $10.4 million and 

$38.0 million, respectively. The aggregate intrinsic values of options outstanding as of December 31, 2017 totaled 
$11.1 million. The weighted average remaining contractual term for options outstanding as of December 31, 2017 
was 1.3 years. 

F- 45

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The following table summarizes the amount of tax benefit realized for stock options and cash received from the 

exercise of stock options:

(In millions)
Tax benefit realized for stock options ..................................... $
Cash received from the exercise of stock options ................... $

For the Years Ended December 31,

2017

2016

2015

3.4 $
0.7 $

4.0 $
2.2 $

11.9
6.3

Market Stock Units (MSUs)

MSUs awarded to employees prior to 2014 vested in four equal annual increments beginning on the first 
anniversary of the grant date. Participants may ultimately earn between 0% and 150% of the target number of units 
granted based on actual stock performance. 

MSUs awarded to employees in 2014 and thereafter vest in three equal annual increments beginning on the 

first anniversary of the grant date, and participants may ultimately earn between 0% and 200% of the target number 
of units granted based on actual stock performance. 

The vesting of these awards is subject to the respective employee’s continued employment. The number of 

MSUs granted represents the target number of units that are eligible to be earned based on the attainment of 
certain market-based criteria involving our stock price. The number of MSUs earned is calculated at each annual 
anniversary from the date of grant over the respective vesting periods, resulting in multiple performance periods. 
Accordingly, additional MSUs may be issued or currently outstanding MSUs may be cancelled upon final 
determination of the number of awards earned. Compensation expense, including the effect of forfeitures, is 
recognized over the applicable service period.

The following table summarizes our MSU activity:

Unvested at December 31, 2016 ................................................................
Hemophilia spin-off adjustment .................................................................
Granted (a) ..............................................................................................
Vested.....................................................................................................
Forfeited ..................................................................................................
Unvested at December 31, 2017 ................................................................

Shares

230,000 $
4,000 $
94,000 $
(112,000) $
(45,000) $
171,000 $

Weighted
Average
Grant Date
Fair Value

355.60
—
382.59
311.17
372.35
370.83

(a)  MSUs granted in 2017 include approximately 9,000 MSUs issued in 2017 based upon the attainment of performance 

criteria set for 2013, in relation to awards granted in that year. MSUs granted during 2017 also include awards granted in 
conjunction with our annual awards made in February 2017 and MSUs granted in conjunction with the hiring of employees. 
These grants reflect the target number of shares eligible to be earned at the time of grant. MSUs granted in 2017 reflect an 
adjustment based upon the final performance multiplier in relation to shares granted in 2016, 2015 and 2014.

We value grants of MSUs using a lattice model with a Monte Carlo simulation. This valuation methodology 
utilizes several key assumptions, including the 60 calendar day average closing stock price on grant date for MSUs 
awarded prior to 2014, the 30 calendar day average closing stock price on the date of grant for MSUs awarded in 
2014 and thereafter, expected volatility of our stock price, risk-free rates of return and expected dividend yield.

 The assumptions used in our valuation are summarized as follows:

For the Years Ended December 31,

Expected dividend yield .......................................
Range of expected stock price volatility ................
Range of risk-free interest rates...........................
30 calendar day average stock price on grant date $263.18 - $267.88 $260.67 - $304.86 $277.35 - $426.27
Weighted-average per share grant date fair value ..

$493.43

$328.03

$382.59

2016
—%
38.2% - 40.7%
0.6% - 0.9%

2015
—%
31.0% - 33.2%
0.2% - 1.0%

2017
—%
33.0% - 35.6%
0.9% - 1.6%

F- 46

 
 
 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The fair values of MSUs vested in 2017, 2016 and 2015 totaled $31.4 million, $39.3 million and $109.0 

million, respectively.

Cash Settled Performance Units (CSPUs)

CSPUs awarded to employees vest in three equal annual increments beginning on the first anniversary of the 

grant date. The vesting of these awards is subject to the respective employee’s continued employment with such 
awards settled in cash. The number of CSPUs granted represents the target number of units that are eligible to be 
earned based on the attainment of certain performance measures established at the beginning of the performance 
period, which ends on December 31 of each year. Participants may ultimately earn between 0% and 200% of the 
target number of units granted based on the degree of actual performance metric achievement. Accordingly, 
additional CSPUs may be issued or currently outstanding CSPUs may be cancelled upon final determination of the 
number of units earned. CSPUs awarded prior to 2014 are settled in cash based on the 60 calendar day average 
closing stock price through each vesting date once the actual vested and earned number of units is known. CSPUs 
awarded in 2014 and thereafter will be settled in cash based on the 30 calendar day average closing stock price 
through each vesting date, once the actual vested and earned number of units is known. Since no shares are issued, 
these awards do not dilute equity. Compensation expense, including the effect of forfeitures, is recognized over the 
applicable service period.

The following table summarizes our CSPU activity:

Unvested at December 31, 2016..........................................................................................
Hemophilia spin-off adjustment ..........................................................................................
Granted (a)........................................................................................................................
Vested ..............................................................................................................................
Forfeited ...........................................................................................................................
Unvested at December 31, 2017 ..........................................................................................

Shares

122,000
3,000
83,000
(69,000)
(34,000)
105,000

(a)  CSPUs granted in 2017 include awards granted in conjunction with our annual awards made in February 2017 and CSPUs 
granted in conjunction with the hiring of employees. These grants reflect the target number of shares eligible to be earned 
at the time of grant. CSPUs granted in 2017 also include CSPUs issued in 2017 based upon the attainment of performance 
criteria set for 2016 in relation to shares granted in 2016.

The cash paid in settlement of CSPUs vested in 2017, 2016 and 2015 totaled $16.6 million, $31.9 million 

and $79.8 million, respectively.  

Performance-vested Restricted Stock Units (PUs)

PUs are granted to certain employees in the form of RSUs that may be settled in cash or shares of our common 

stock at the sole discretion of the Compensation and Management Development Committee of our Board of 
Directors. These awards are structured and accounted for the same way as the CSPUs, and vest in three equal 
annual increments beginning on the first anniversary of the grant date. The number of PUs granted represents the 
target number of units that are eligible to be earned based on the attainment of certain performance measures 
established at the beginning of the performance period, which ends on December 31 of each year. Participants may 
ultimately earn between 0% and 200% of the target number of units granted based on the degree of actual 
performance metric achievement. Accordingly, additional PUs may be issued or currently outstanding PUs may be 
cancelled upon final determination of the number of units earned. PUs settling in cash are based on the 30 calendar 
day average closing stock price through each vesting date once the actual vested and earned number of units is 
known. Compensation expense, including the effect of forfeitures, is recognized over the applicable service period.

F- 47

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The following table summarizes our PU activity:

Unvested at December 31, 2016..........................................................................................
Hemophilia spin-off adjustment ..........................................................................................
Granted (a)........................................................................................................................
Vested ..............................................................................................................................
Forfeited ...........................................................................................................................
Unvested at December 31, 2017 ..........................................................................................

Shares

110,000
3,000
40,000
(43,000)
(19,000)
91,000

(a)  PUs granted in 2017 include awards granted in conjunction with our annual awards made in February 2017 and PUs granted 
in conjunction with the hiring of employees. These grants reflect the target number of shares eligible to be earned at the 
time of grant.

During 2015 32,000 PUs were converted to share settlements, of which approximately 11,000 shares were 

vested and issued. All other PUs that vested in 2015 were settled in cash totaling $12.4 million.

All PUs that vested in 2017 and 2016 were settled in cash totaling $11.5 million and $8.1 million, respectively.

Time-Vested Restricted Stock Units (RSUs)

RSUs awarded to employees generally vest no sooner than one-third per year over three years on the 

anniversary of the date of grant, or upon the third anniversary of the date of the grant, provided the employee 
remains continuously employed with us, except as otherwise provided in the plan. Shares of our common stock will 
be delivered to the employee upon vesting, subject to payment of applicable withholding taxes. RSUs awarded to 
directors for service on our Board of Directors vest on the first anniversary of the date of grant, provided in each 
case that the director continues to serve on our Board of Directors through the vesting date. Shares of our common 
stock will be delivered to the director upon vesting and are not subject to any withholding taxes. The fair value of all 
RSUs is based on the market value of our stock on the date of grant. Compensation expense, including the effect of 
forfeitures, is recognized over the applicable service period.

The following table summarizes our RSU activity:

Unvested at December 31, 2016................................................................
Hemophilia spin-off adjustment ................................................................
Granted (a)..............................................................................................
Vested ....................................................................................................
Forfeited .................................................................................................
Unvested at December 31, 2017 ................................................................

Shares

888,000 $
12,000 $
464,000 $
(350,000) $
(182,000) $
832,000 $

Weighted
Average
Grant Date
Fair Value

303.49
—
293.41
308.04
292.57
291.85

(a)  RSUs granted in 2017 primarily represent RSUs granted in conjunction with our annual awards made in February 2017 and 
awards made in conjunction with the hiring of new employees. RSUs granted in 2017 also include approximately 11,000 
RSUs granted to our Board of Directors.

RSUs granted in 2016 and 2015 had weighted average grant date fair values of $268.52 and $388.88, 

respectively.

The fair values of RSUs vested in 2017, 2016 and 2015 totaled $100.0 million, $104.6 million and $239.7 

million, respectively.  

F- 48

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Employee Stock Purchase Plan (ESPP)

In June 2015 our shareholders approved the 2015 ESPP. The 2015 ESPP, which became effective on July 1, 

2015, replaced the Biogen Idec Inc. 1995 ESPP (1995 ESPP), which expired on June 30, 2015. The maximum 
aggregate number of shares of our common stock that may be purchased under the 2015 ESPP is 6.2 million. 

The following table summarizes our ESPP activity:

(In millions, except share amounts)
Shares issued under the 2015 ESPP ..................................
Shares issued under the 1995 ESPP ..................................
Cash received under the 2015 ESPP................................... $
Cash received under the 1995 ESPP................................... $

For the Years Ended December 31,

2017

2016

2015

167,000
—
39.8 $
— $

190,000
—
41.5 $
— $

78,000
98,000
19.3
30.0

17.   

Income Taxes

Income Tax Expense

Income before income tax provision and the income tax expense consist of the following:

(In millions)
Income before income taxes (benefit):

For the Years Ended December 31,

2017

2016

2015

Domestic.......................................................................... $
Foreign .............................................................................

Total............................................................................. $

3,540.4 $
1,588.4
5,128.8 $

3,655.4 $
1,277.6
4,933.0 $

3,386.7
1,380.6
4,767.3

Income tax expense (benefit):
Current:

Federal ............................................................................. $
State................................................................................
Foreign .............................................................................
Total.............................................................................

Deferred:

Federal ............................................................................. $
State................................................................................
Foreign .............................................................................
Total.............................................................................
Total income tax expense................................................... $

2,201.4 $
57.0
108.6
2,367.0

241.0 $
9.9
(159.2)
91.7
2,458.7 $

1,304.3 $
55.1
52.9
1,412.3

(125.6) $
(3.8)
(45.6)
(175.0)
1,237.3 $

1,214.1
38.6
54.5
1,307.2

(129.6)
(1.9)
(14.1)
(145.6)
1,161.6

Tax Reform

The 2017 Tax Act, which was signed into law on December 22, 2017, has resulted in significant changes to the 

U.S. corporate income tax system. These changes include a federal statutory rate reduction from 35% to 21%, the 
elimination or reduction of certain domestic deductions and credits and limitations on the deductibility of interest 
expense and executive compensation. The 2017 Tax Act also transitions international taxation from a worldwide 
system to a modified territorial system and includes base erosion prevention measures on non-U.S. earnings, which 
has the effect of subjecting certain earnings of our foreign subsidiaries to U.S. taxation as global intangible low-
taxed income (GILTI). These changes are effective beginning in 2018.

The 2017 Tax Act also includes a one-time mandatory deemed repatriation tax on accumulated foreign 

subsidiaries' previously untaxed foreign earnings (the Transition Toll Tax). 

Changes in tax rates and tax laws are accounted for in the period of enactment. Therefore, during the year 

ended December 31, 2017, we recorded a charge totaling $1,173.6 million related to our current estimate of the 
provisions of the 2017 Tax Act.

F- 49

 
 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Transition Toll Tax

The 2017 Tax Act eliminates the deferral of U.S. income tax on the historical unrepatriated earnings by 
imposing the Transition Toll Tax, which is a one-time mandatory deemed repatriation tax on undistributed foreign 
earnings. The Transition Toll Tax is assessed on the U.S. shareholder's share of the foreign corporation's 
accumulated foreign earnings that have not previously been taxed. Earnings in the form of cash and cash 
equivalents will be taxed at a rate of 15.5% and all other earnings will be taxed at a rate of 8.0%.

As of December 31, 2017, we have accrued income tax liabilities of $989.6 million under the Transition Toll Tax, 

of which $78.3 million is expected to be paid within one year. The Transition Toll Tax will be paid over an eight-year 
period, starting in 2018, and will not accrue interest. 

At December 31, 2017, we considered none of our earnings to be permanently reinvested outside the U.S. and 
have therefore recorded tax liabilities associated with an estimate of the total withholding taxes that may be a result 
of our repatriation of earnings.

Effect on Deferred Tax Assets and Liabilities and other Adjustments

Our deferred tax assets and liabilities are measured at the enacted tax rate expected to apply when these 

temporary differences are expected to be realized or settled.

As our deferred tax assets exceed the balance of our deferred tax liabilities at the date of enactment, we have 

recorded a tax expense of $184.0 million, reflecting the decrease in the U.S. corporate income tax rate and other 
changes to U.S. tax law. It is our current policy to not recognize deferred taxes for basis differences expected to 
reverse as GILTI is incurred and instead to account for any taxes assessed as period costs.

Status of our Assessment

Our preliminary estimate of the Transition Toll Tax and the remeasurement of our deferred tax assets and 
liabilities is subject to the finalization of management’s analysis related to certain matters, such as developing 
interpretations of the provisions of the 2017 Tax Act, changes to certain estimates and amounts related to the 
earnings and profits of certain subsidiaries and the filing of our tax returns. U.S. Treasury regulations, administrative 
interpretations or court decisions interpreting the 2017 Tax Act may require further adjustments and changes in our 
estimates.  

The final determination of the Transition Toll Tax and the remeasurement of our deferred assets and liabilities 

will be completed as additional information becomes available, but no later than one year from the enactment of the 
2017 Tax Act.  

Article 20 Procedure of ZINBRYTA

As a result of the Article 20 Procedure of ZINBRYTA, we have recognized a net impairment charge on certain tax 

assets reflected within income tax expense of $48.8 million. This charge reflects the write off of $142.6 million 
related to prepaid taxes, which was partially offset by the recognition of an unrecorded deferred tax benefit of $93.8 
million. For additional information on the Article 20 Procedure of ZINBRYTA and resulting impairment of ZINBRYTA 
related assets, please read Note 20, Collaborative and Other Relationships, to these consolidated financial 
statements.

F- 50

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Deferred Tax Assets and Liabilities

Significant components of our deferred tax assets and liabilities are summarized as follows:

(In millions)
Deferred tax assets:

Tax credits ............................................................................................... $
Inventory, other reserves and accruals .......................................................
Intangibles, net ........................................................................................
Net operating loss....................................................................................
Share-based compensation.......................................................................
Other.......................................................................................................
Valuation allowance..................................................................................

Total deferred tax assets ...................................................................... $

Deferred tax liabilities:

Purchased intangible assets ..................................................................... $
Depreciation, amortization and other .........................................................

Total deferred tax liabilities ................................................................... $

As of December 31,

2017

2016

60.0 $

147.8
378.8
209.8
26.9
25.1
(16.6)
831.8 $

(250.7) $
(107.9)
(358.6) $

201.1
250.6
459.8
65.9
61.5
49.0
(16.1)
1,071.8

(376.6)
(113.5)
(490.1)

In addition to deferred tax assets and liabilities, we have recorded prepaid tax and deferred charges related to 
intercompany transactions. As of December 31, 2017 and 2016, the total deferred charges and prepaid taxes were 
$617.7 million and $989.8 million, respectively.

In October 2016 the FASB issued ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity Transfer of Assets 
Other Than Inventory. This new standard eliminates the deferral of the tax effects of intra-entity asset transfers other 
than inventory. As a result, the income tax consequences from the intra-entity transfer of an asset other than 
inventory and associated changes to deferred taxes will be recognized when the transfer occurs. 

This new standard becomes effective for us on January 1, 2018. We will adopt this standard using the modified 
retrospective method, through a cumulative-effect adjustment directly to retained earnings as of that date. Based on 
currently enacted tax rates, upon adoption in 2018, we will record additional deferred tax assets of approximately 
$0.5 billion and an increase to retained earnings of approximately $0.5 billion. We will recognize incremental 
deferred income tax expense thereafter as these net deferred tax assets are utilized.

Tax Rate

A reconciliation between the U.S. federal statutory tax rate and our effective tax rate is summarized as follows:

For the Years Ended December 31,

2017

2016

2015

Statutory rate .......................................................................
State taxes...........................................................................
Taxes on foreign earnings ......................................................
Credits and net operating loss utilization ................................
Purchased intangible assets ..................................................
Manufacturing deduction .......................................................
2017 Tax Act ........................................................................
Impairment of ZINBRYTA related tax assets ............................
Other permanent items .........................................................
Other ...................................................................................
Effective tax rate.................................................................

35.0%
0.8
(11.1)
(0.8)
1.4
(1.9)
22.9
0.9
0.7
—
47.9%

35.0%
0.9
(9.6)
(1.4)
1.2
(1.9)
—
—
0.5
0.4
25.1%

35.0%
0.5
(10.0)
(1.3)
1.0
(1.8)
—
—
0.7
0.3
24.4%

F- 51

 
 
 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Changes in Tax Rate

The most significant factors contributing to the increase in our effective tax rate for the year ended 

December 31, 2017, as compared to 2016 is the effect of the enactment of the 2017 Tax Act and the impairment of 
certain ZINBRYTA related tax assets, both of which are discussed above. Excluding the effect of these items, our 
income tax rate would have decreased due to a lower percentage of our earnings being recognized in the U.S., a 
higher tax jurisdiction. The geographic split of our earnings was affected by milestone and upfront payments in the 
current year and the spin-off of our hemophilia business, partially offset by growth from the U.S. launch of SPINRAZA 
and increases in our revenues from anti-CD20 therapeutic programs in the U.S. In addition, in 2017 we earned a 
lower benefit from the orphan drug credit due to the FDA's approval of SPINRAZA.

Our effective tax rate for 2016 compared to 2015 increased primarily due to a net state tax benefit in 2015 

resulting from the remeasurement of one of our uncertain tax positions, described below, and a higher relative 
percentage of our earnings being attributed to the U.S., a higher tax jurisdiction.

Tax Attributes

As of December 31, 2017, we had net operating losses and general business credit carry forwards for federal 

income tax purposes of approximately $1.4 million and $1.3 million, respectively, which begin to expire in 2020. 
Additionally, for state income tax purposes, we had net operating loss carry forwards of approximately $19.3 million 
that begin to expire in 2018. For state income tax purposes, we also had research and investment credit carry 
forwards of approximately $129.7 million that begin to expire in 2018. For foreign income tax purposes, we had $2.1 
billion of net operating loss carryforwards that begin to expire in 2021.

In assessing the realizability of our deferred tax assets, we have considered whether it is more likely than not 

that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets 
is dependent upon the generation of future taxable income during the periods in which those temporary differences 
become deductible. In making this determination, under the applicable financial reporting standards, we are allowed 
to consider the scheduled reversal of deferred tax liabilities, projected future taxable income and tax planning 
strategies. Our estimates of future taxable income take into consideration, among other items, our estimates of 
future income tax deductions related to the exercise of stock options. Based upon the level of historical taxable 
income and income tax liability and projections for future taxable income over the periods in which the deferred tax 
assets are utilizable, we believe it is more likely than not that we will realize the net benefits of the deferred tax 
assets of our wholly owned subsidiaries. In the event that actual results differ from our estimates or we adjust our 
estimates in future periods, we may need to establish a valuation allowance, which could materially impact our 
consolidated financial position and results of operations.

Accounting for Uncertainty in Income Taxes

A reconciliation of the beginning and ending amount of our unrecognized tax benefits is summarized as follows:

(In millions)
Balance at January 1, ............................................................... $
Additions based on tax positions related to the current period ...
Additions for tax positions of prior periods................................
Reductions for tax positions of prior periods .............................
Statute expirations .................................................................
Settlement refund (payment) ...................................................
Balance at December 31,.......................................................... $

2017

2016

2015

32.4 $
5.7
7.3
(21.8)
(1.4)
44.6
66.8 $

67.9 $
7.2
36.3
(13.3)
(1.4)
(64.3)
32.4 $

131.5
10.5
19.5
(49.9)
(1.2)
(42.5)
67.9

Our 2017 activity above reflects a refund received from a state, related to the settlement of an uncertain tax 

position.

We and our subsidiaries are routinely examined by various taxing authorities. We file income tax returns in 
various U.S. states and in U.S. federal and other foreign jurisdictions. With few exceptions, we are no longer subject 
to U.S. federal tax examination for years before 2013 or state, local or non-U.S. income tax examinations for years 
before 2010.

F- 52

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Included in the balance of unrecognized tax benefits as of December 31, 2017, 2016 and 2015 are $64.3 
million, $26.9 million and $15.7 million (net of the federal benefit on state issues), respectively, of unrecognized tax 
benefits that, if recognized, would affect the effective income tax rate in future periods. 

We recognize potential interest and penalties accrued related to unrecognized tax benefits in income tax 
expense. In 2017 we recognized a net interest expense of $4.8 million. In 2016 we recognized net interest expense 
of $9.1 million. In 2015 we recognized a net interest expense of approximately $3.1 million. We have accrued 
approximately $16.1 million and $25.2 million for the payment of interest and penalties as of December 31, 2017 
and 2016, respectively.

International Uncertain Tax Positions

We have made payments totaling approximately $60.0 million to the Danish Tax Authority (SKAT) for 

assessments received for fiscal 2009, 2011 and 2013 regarding withholding taxes and the treatment of certain 
intercompany transactions involving a Danish affiliate and another of our affiliates. We continue to dispute the 
assessments for all of these periods and believe that the positions taken in our historical filings are valid.

It is reasonably possible that we will adjust the value of our uncertain tax positions related to Danish 

withholding taxes based on potential European court decisions expected in 2018 on similar matters.

Federal and State Uncertain Tax Positions

It is reasonably possible that we will adjust the value of our uncertain tax positions related to our revenues 

from anti-CD20 therapeutic programs and certain transfer pricing issues as we receive additional information from 
various taxing authorities, including reaching settlements with the authorities. In addition, the Internal Revenue 
Service and other national tax authorities routinely examine our intercompany transfer pricing with respect to 
intellectual property related transactions and it is possible that they may disagree with one or more positions we 
have taken with respect to such valuations.

18.  

 Other Consolidated Financial Statement Detail

Supplemental Cash Flow Information

Supplemental disclosure of cash flow information for the years ended December 31, 2017, 2016 and 2015, is 

as follows:

(In millions)
Cash paid during the year for:

For the Years Ended December 31,

2017

2016

2015

Interest......................................................................... $
Income taxes ................................................................ $

281.7 $
1,066.4 $

281.2 $
1,642.2 $

39.1
1,674.8

Non-cash Operating, Investing and Financing Activity

In the fourth quarter of 2017 we accrued $600.0 million upon reaching $15.0 billion and $16.0 billion in total 

cumulative sales of FUMADERM and TECFIDERA (together, the Fumapharm Products). The amount, net of tax benefit, 
was accounted for as an increase to goodwill in accordance with the accounting standard applicable to business 
combinations when we acquired Fumapharm, and is expected to be paid in the first quarter of 2018. For additional 
information on this transaction, please read Note 22, Commitments and Contingencies, to these consolidated 
financial statements. 

In connection with the construction of our large-scale biologics manufacturing facility in Solothurn, Switzerland, 
we accrued charges related to processing equipment and engineering services of approximately $150.0 million and 
$100.0 million in our consolidated balance sheets as of December 31, 2017 and 2016, respectively. For additional 
information on this matter, please read Note 11, Property, Plant and Equipment, to these consolidated financial 
statements. 

In December 2016 we accrued $454.8 million related to the settlement and license agreement with Forward 
Pharma. For additional information on this transaction, please read Note 7, Intangible Assets and Goodwill, to these 
consolidated financial statements.

F- 53

 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

In February 2015 upon completion of our acquisition of Convergence, we recorded a contingent consideration 

obligation of $274.5 million as part of the purchase price. For additional information on this transaction, please read 
Note 2, Acquisitions, to these consolidated financial statements.

Other Income (Expense), Net

Components of other income (expense), net, are summarized as follows:

(In millions)
Interest income .................................................................. $
Interest expense ................................................................
Gain (loss) on investments, net ...........................................
Foreign exchange gains (losses), net....................................
Other, net...........................................................................

Total other income (expense), net ...................................... $

For the Years Ended December 31,

2017

2016

2015

78.5 $

(250.8)
(36.3)
6.3
(13.1)
(215.4) $

63.4 $

(260.0)
6.0
(9.8)
(17.0)
(217.4) $

22.1
(95.5)
(3.8)
(32.7)
(13.8)
(123.7)

Interest expense for the year ended December 31, 2017, includes a $5.2 million charge recognized in 

November 2017 upon the redemption of our 6.875% Senior Notes due March 1, 2018. For additional information on 
the redemption of these notes, please read Note 12, Indebtedness, to these consolidated financial statements. 

Gain (loss) on investments, net for the year ended December 31, 2017, includes other than temporary 

impairments recorded on strategic investments and marketable debt securities during the year.

Other Current Assets

Other current assets include prepaid taxes totaling approximately $657.6 million and $817.0 million as of 

December 31, 2017 and 2016, respectively.

As a result of the Article 20 Procedure of ZINBRYTA, we impaired prepaid tax balances totaling $142.6 million. 

For additional information on the Article 20 Procedure of ZINBRYTA and resulting impairment of ZINBRYTA related 
assets, please read Note 20, Collaborative and Other Relationships, to these consolidated financial statements.

Accrued Expenses and Other

Accrued expenses and other consists of the following:

(In millions)
Current portion of contingent consideration obligations ................................. $
Revenue-related reserves for discounts and allowances ................................
Employee compensation and benefits ..........................................................
Royalties and licensing fees ........................................................................
Collaboration expenses...............................................................................
Construction in progress .............................................................................
Accrued TECFIDERA litigation settlement charge ...........................................
Other .........................................................................................................

Total accrued expenses and other.............................................................. $

As of December 31,

2017

2016

844.6 $
572.0
297.7
206.7
183.7
159.7
—
636.9
2,901.3 $

580.8
438.6
282.9
195.8
130.9
134.0
454.8
685.7
2,903.5

Pricing of TYSABRI in Italy - AIFA

In the fourth quarter of 2011 Biogen Italia SRL, our Italian subsidiary, received a notice from the Italian 
National Medicines Agency (Agenzia Italiana del Farmaco or AIFA) that sales of TYSABRI after mid-February 2009 
through mid-February 2011 exceeded by EUR30.7 million a reimbursement limit established pursuant to a Price 
Determination Resolution granted by AIFA in December 2006. In January 2012 we filed an appeal against AIFA in 
administrative court in Rome, Italy seeking a ruling that the reimbursement limit in the Price Determination 
Resolution should apply as written to only “the first 24 months” of TYSABRI sales, which ended in mid-February 
2009. Since being notified in the fourth quarter of 2011 that AIFA believed a reimbursement limit was still in effect, 
we deferred revenue on sales of TYSABRI as if the reimbursement limit were in effect for each biannual period 

F- 54

 
 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

beginning in mid-February 2009.

In July 2013 we negotiated an agreement in principle with AIFA's Price and Reimbursement Committee that 
would have resolved all of AIFA's claims relating to sales of TYSABRI in excess of the reimbursement limit for the 
periods from February 2009 through January 2013 for an aggregate repayment of EUR33.3 million. As a result of 
this agreement in principle, we recorded a liability and reduction to revenue of EUR15.4 million at June 30, 2013, 
which approximated 50% of the claim related to the period from mid-February 2009 through mid-February 2011. 

In June 2014 AIFA approved a resolution affirming that there is no reimbursement limit from and after February 

2013. As a result, we recognized $53.5 million of TYSABRI revenues related to the periods February 2013 through 
June 2014 that were previously deferred.

In the first quarter of 2017 we reached an agreement with AIFA's Price and Reimbursement Committee 

resolving all of AIFA's claims relating to sales of TYSABRI in excess of the reimbursement limit for prior periods. As a 
result, in the first quarter of 2017, we recognized EUR41.8 million (approximately $45.0 million) in revenues for 
sales that were previously deferred. These amounts were previously accrued for and included in the table above in 
Other as of December 31, 2016.

19.  

Investments in Variable Interest Entities

Consolidated Variable Interest Entities

Our consolidated financial statements include the financial results of variable interest entities in which we are 

the primary beneficiary. The following are our significant variable interest entities.

Neurimmune

In November 2007 we entered into a collaboration and license agreement with Neurimmune Subone AG 
(Neurimmune) for the development and commercialization of antibodies for the treatment of AD. We are responsible 
for the development, manufacturing and commercialization of all collaboration products. This agreement is effective 
for the longer of the duration of certain patents relating to a licensed product, or 12 years from the first commercial 
sale of any product using such a licensed compound. Our anti-amyloid beta antibody, aducanumab, for the treatment 
of AD resulted from this collaboration. 

We consolidate the results of Neurimmune as we determined that we are the primary beneficiary of 
Neurimmune because we have the power through the collaboration to direct the activities that most significantly 
impact the entity’s economic performance and we are required to fund 100% of the research and development costs 
incurred in support of the collaboration. Under this agreement, we are also required to pay royalties on sales of any 
resulting commercial products and make payments upon the achievement of certain milestone events. 

In October 2017 we amended the terms of our collaboration and license agreement with Neurimmune. Under 

the amended agreement, we made a $150.0 million payment to Neurimmune in exchange for a 15% reduction in 
royalty rates payable on products developed under the agreement, including on potential commercial sales of 
aducanumab. Our royalty rates payable on products developed under the agreement, including on potential 
commercial sales of aducanumab, will now range from the high single digits to low teens. As we consolidate the 
results of Neurimmune, we recognized this payment as a charge to noncontrolling interest in the fourth quarter of 
2017 and treated it as a distribution. Under the amended agreement, we also have an option that will expire in April 
2018 to further reduce our royalty rates payable on products developed under the agreement, including on potential 
commercial sales of aducanumab, by an additional 5% in exchange for a $50.0 million payment to Neurimmune. 

Research and development costs for which we reimburse Neurimmune are reflected in research and 

development expense in our consolidated statements of income. During the years ending December 31, 2017, 2016 
and 2015 amounts reimbursed were immaterial.

In September 2015 we recognized a $60.0 million milestone payable to Neurimmune upon enrollment of the 
first patient in a Phase 3 trial for aducanumab. We recognized this payment as a charge to noncontrolling interest. 
Based upon our current development plans for aducanumab, we may pay Neurimmune up to $275.0 million in 
remaining milestone payments. Future milestone payments and royalties, if any, will be reflected in our consolidated 
statements of income as a charge to noncontrolling interest, net of tax when such milestones are achieved.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The assets and liabilities of Neurimmune are not significant to our consolidated financial position or results of 

operations as it is a research and development organization. We have provided no financing to Neurimmune other 
than previously contractually required amounts.

Under the terms of our October 2017 collaboration agreement with Eisai for the joint development and 

commercialization of aducanumab, Eisai may elect to share in the benefit and cost associated with the royalty 
reductions discussed above. Eisai has elected to not share in the benefit and cost of the October 2017 royalty 
reduction. For additional information on our collaboration arrangement with Eisai, please read Note 20, Collaborative 
and Other Relationships, to these consolidated financial statements.

Unconsolidated Variable Interest Entities

We have relationships with other variable interest entities that we do not consolidate as we lack the power to 

direct the activities that significantly impact the economic success of these entities. These relationships include 
investments in certain biotechnology companies and research collaboration agreements. 

As of December 31, 2017 and 2016, the carrying value of our investments in biotechnology companies totaled 

$48.3 million and $47.4 million, respectively. Our maximum exposure to loss related to these variable interest 
entities is limited to the carrying value of our investments.

We have also entered into research collaboration agreements with certain variable interest entities where we 

are required to fund certain development activities. These development activities are included in research and 
development expense in our consolidated statements of income, as they are incurred. We have provided no financing 
to these variable interest entities other than previously contractually required amounts. 

20.  

 Collaborative and Other Relationships

In connection with our business strategy, we have entered into various collaboration agreements that provide 

us with rights to develop, produce and market products using certain know-how, technology and patent rights 
maintained by our collaborative partners. Terms of the various collaboration agreements may require us to make 
milestone payments upon the achievement of certain product research and development objectives and pay royalties 
on future sales, if any, of commercial products resulting from the collaboration.

Depending on the collaborative arrangement, we may record funding receivable or payable balances with our 
partners, based on the nature of the cost-sharing mechanism and activity within the collaboration. Our significant 
collaboration arrangements are discussed below.

Genentech (Roche Group)

We have certain business and financial rights with respect to RITUXAN for the treatment of non-Hodgkin's 

lymphoma, CLL and other conditions, GAZYVA for the treatment of CLL and follicular lymphoma, OCREVUS for the 
treatment of primary progressive MS (PPMS) and relapsing MS (RMS) and other potential anti-CD20 therapies under 
a collaboration agreement with Genentech, a wholly-owned member of the Roche Group. The Roche Group and its 
sub-licensees maintain sole responsibility for the development, manufacturing and commercialization of GAZYVA in 
the U.S. 

Our collaboration agreement will continue in effect until we mutually agree to terminate the collaboration, 
except that if we undergo a change in control, as defined in our collaboration agreement, Genentech has the right to 
present an offer to buy the rights to RITUXAN and we must either accept Genentech’s offer or purchase Genentech’s 
rights on the same terms as its offer. Genentech will also be deemed concurrently to have purchased our rights to 
any other anti-CD20 products in development in exchange for a royalty and our rights to GAZYVA in exchange for the 
compensation described in the table below. Our collaboration with Genentech was created through a contractual 
arrangement and not through a joint venture or other legal entity.

RITUXAN

Genentech is responsible for the worldwide manufacturing of RITUXAN. Development and commercialization 

rights and responsibilities under this collaboration are divided as follows:

U.S.

We share with Genentech co-exclusive rights to develop, commercialize and market RITUXAN in the U.S.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Canada

We and Genentech have assigned our rights under our collaboration agreement with respect to Canada to the 

Roche Group.

GAZYVA

We recognize our share of the development and commercialization expenses of GAZYVA as a reduction of our 

share of pre-tax profits in revenues from anti-CD20 therapeutic programs. 

Commercialization of GAZYVA impacts our percentage of the co-promotion profits for RITUXAN, as summarized 

in the table below.

OCREVUS

In March 2017 the FDA approved OCREVUS, a humanized anti-CD20 monoclonal antibody, for the treatment of 
RMS and PPMS. Under our agreement with Genentech, we will receive a tiered royalty on U.S. net sales from 13.5% 
and increasing up to 24% if annual net sales exceed $900.0 million. There will be a 50% reduction to these royalties 
if a biosimilar to OCREVUS is approved in the U.S. 

In addition, we will receive a 3% royalty on net sales of OCREVUS outside the U.S., with the royalty period 
lasting 11 years from the first commercial sale of OCREVUS on a country-by-country basis. OCREVUS was approved 
for the treatment of RMS and PPMS in Australia, Switzerland and the E.U. in July 2017, September 2017 and 
January 2018, respectively. 

The commercialization of OCREVUS does not impact the percentage of the co-promotion profits we receive for 

RITUXAN or GAZYVA. Genentech is solely responsible for development and commercialization of OCREVUS and 
funding future costs. Genentech cannot develop OCREVUS in CLL, non-Hodgkin's lymphoma or rheumatoid arthritis. 
OCREVUS royalty revenues were based on our estimates from third party and market research data of OCREVUS 
sales occurring during the corresponding period. Differences between actual and estimated royalty revenues will be 
adjusted for in the period in which they become known, which is expected to be the following quarter.

Profit-sharing Formulas

RITUXAN Profit Share

Our current pretax co-promotion profit-sharing formula for RITUXAN provides for a 30% share on the first $50.0 

million of co-promotion operating profits earned each calendar year. Our share of annual co-promotion profits in 
excess of $50.0 million varies, as summarized in the table below, upon the following events:

Until GAZYVA First Non-CLL FDA Approval ..............................................................................

After GAZYVA First Non-CLL FDA Approval until First GAZYVA Threshold Date ............................

After First GAZYVA Threshold Date until Second GAZYVA Threshold Date .................................

After Second GAZYVA Threshold Date ...................................................................................

40.0%

39.0%

37.5%

35.0%

First Non-CLL GAZYVA FDA Approval means the FDA’s first approval of GAZYVA in an indication other than CLL.

First GAZYVA Threshold Date means the earlier of (i) the date of the First Non-CLL GAZYVA FDA approval if U.S. 
gross sales of GAZYVA for the preceding consecutive 12-month period were at least $150.0 million or (ii) the 
first day of the calendar quarter after the date of the First Non-CLL GAZYVA FDA Approval that U.S. gross sales 
of GAZYVA within any consecutive 12-month period have reached $150.0 million.

Second GAZYVA Threshold Date means the first day of the calendar quarter after U.S. gross sales of GAZYVA 
within any consecutive 12-month period have reached $500.0 million. The Second GAZYVA Threshold Date can 
be achieved regardless of whether GAZYVA has been approved in a non-CLL indication.

Our share of RITUXAN pre-tax profits in the U.S. decreased to 39% from 40% in February 2016 when GAZYVA 

was approved by the FDA as a new treatment for follicular lymphoma and was further decreased to 37.5% in the 
third quarter of 2017 as gross sales of GAZYVA in the U.S. for the preceding 12 month period exceeded $150.0 
million.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

In addition, should the FDA approve an anti-CD20 product other than OCREVUS or GAZYVA that is acquired or 

developed by Genentech and subject to the collaboration agreement, our share of the co-promotion operating profits 
would be between 30% and 37.5% based on certain events.

In June 2017 the FDA approved RITUXAN HYCELA for subcutaneous injection for the treatment of adults with 

previously untreated and relapsed or refractory follicular lymphoma, previously untreated diffuse large B-cell 
lymphoma and CLL. This new treatment includes the same monoclonal antibody as intravenous RITUXAN in 
combination with hyaluronidase human, an enzyme that helps to deliver rituximab under the skin. 

GAZYVA Profit Share

Our current pretax profit-sharing formula for GAZYVA provides for a 35% share on the first $50.0 million of 

operating profits earned each calendar year. Our share of annual profits in excess of $50.0 million varies, as 
summarized in the table below, upon the following events:

Until First GAZYVA Threshold Date ........................................................................................

After First GAZYVA Threshold Date until Second GAZYVA Threshold Date .................................

After Second GAZYVA Threshold Date ...................................................................................

39.0%

37.5%

35.0%

In 2017, 2016 and 2015 our share of operating profits on GAZYVA was 35%.

In November 2017 the FDA approved GAZYVA in combination with chemotherapy, followed by GAZYVA alone, for 

people with previously untreated advanced follicular lymphoma.

Revenues from Anti-CD20 Therapeutic Programs

Revenues from anti-CD20 therapeutic programs are summarized as follows:

(In millions)
Biogen's share of pre-tax profits in the U.S. for RITUXAN and
GAZYVA, including the reimbursement of selling and
development expenses ........................................................ $
Other revenues from anti-CD20 therapeutic programs ............

For the Years Ended December 31,

2017

2016

2015

1,316.4 $

1,249.5 $

1,269.8

242.8

65.0

69.4

Total revenues from anti-CD20 therapeutic programs ....... $

1,559.2 $

1,314.5 $

1,339.2

In 2017 the 37.5% profit-sharing threshold was met during the third quarter and the 39% profit-sharing 

threshold was met during the first quarter. In 2016 the 39% profit-sharing threshold was met during the first quarter. 
In 2015, the 40% profit-sharing threshold was met during the first quarter.

Biogen's share of pre-tax profits in the U.S. for RITUXAN and GAZYVA, including the reimbursement of selling 

and development expenses for 2017, as depicted in the table above, excludes certain expenses charged to the 
collaboration by Genentech that we believe remain the responsibility of Genentech and that we are not obligated to 
pay under the terms of the collaboration agreement. Accordingly, we did not recognize the effect of those expenses 
in the determination of our share of pre-tax collaboration profits and Genentech has withheld approximately $120 
million from amounts due to us in relation to collaboration activity for 2017, representing Genentech’s estimate of 
our share of these expenses. We remain in discussions with Genentech about a resolution relating to these 
amounts.

Prior to regulatory approval, we record our share of the expenses incurred by the collaboration for the 

development of anti-CD20 products in research and development expense in our consolidated statements of 
income. After an anti-CD20 product is approved, we record our share of the development expenses related to that 
product as a reduction of our share of pre-tax profits in revenues from anti-CD20 therapeutic programs. 

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

AbbVie

We have a collaboration agreement with AbbVie for the development and commercialization of ZINBRYTA, which 

was approved for the treatment of relapsing forms of MS in the U.S. in May 2016 and in the E.U. in July 2016. 
Under this agreement, we and AbbVie conduct ZINBRYTA co-promotion activities in the U.S., E.U. and Canadian 
territories (Collaboration Territory) where development and commercialization costs and profits are shared equally. 
Outside of the Collaboration Territory, we are solely responsible for development and commercialization of ZINBRYTA 
and will pay a tiered royalty to AbbVie as a percentage of net sales in the low to high teens.

We are responsible for manufacturing and research and development activities in both the Collaboration 
Territory and outside the Collaboration Territory and record these activities within their respective lines in our 
consolidated statements of income, net of any reimbursement of research and development expenditures received 
from AbbVie. For the years ended December 31, 2017, 2016 and 2015, the collaboration incurred $39.9 million, 
$48.6 million and $113.8 million for research and development activities, respectively, for which we recognized 
$19.9 million, $24.3 million and $60.8 million, respectively, in our consolidated statements of income. 

Prior to regulatory approval, we also recognized $22.0 million of pre-commercialization expenses within our 
selling, general and administrative expense, which represented 50% of the collaboration's pre-commercialization 
costs for 2016. After ZINBRYTA was approved by the FDA and European Medicines Agency (EMA) in 2016, we began 
to recognize our share of the collaboration activities within the U.S., E.U. and Canadian territories as described 
below under "Co-promotion Profits and Losses."

Article 20 Procedure of ZINBRYTA

In July 2017 the EMA announced that it had provisionally restricted the use of ZINBRYTA to adult patients with 
highly active relapsing disease despite a full and adequate course of treatment with at least one disease modifying 
therapy (DMT) or with rapidly evolving severe relapsing MS who are unsuitable for treatment with other DMTs. These 
restrictions followed the initiation of an EMA review (referred to as an Article 20 Procedure) of ZINBRYTA following 
the report of a case of fatal fulminant liver failure, as well as four cases of serious liver injury. 

In October 2017, as part of this Article 20 Procedure of ZINBRYTA, the EMA Pharmacovigilance Risk Assessment 
Committee (PRAC) completed its assessment and recommended a further set of restrictions on the use of ZINBRYTA 
by MS patients. 

In November 2017 the Committee for Medicinal Products for Human Use (CHMP) adopted an opinion, confirming 

the PRAC's recommendations, for further restrictions to minimize the risk of serious liver injury with ZINBRYTA, 
including restriction of its use to adult patients with relapsing forms of MS who have had an inadequate response to 
at least two DMTs and for whom treatment with any other DMT is contraindicated or otherwise unsuitable. In January 
2018 the EC adopted a final and legally-binding decision, which concluded the Article 20 Procedure, confirming the 
CHMP opinion.

The recommendation of these restrictions by the CHMP resulted in the impairment of substantially all of our 
assets related to ZINBRYTA as we have determined that these amounts may not be recoverable. As a result, we 
recorded net impairment charges related to intangible assets, inventory, property, plant and equipment and prepaid 
tax assets, totaling approximately $190.8 million. Inventory related losses are subject to our profit share with 
AbbVie and are included above net of expected reimbursement. Offsetting these amounts was an unrecorded tax 
benefit related to certain ZINBRYTA related assets totaling approximately $93.8 million. 

Co-promotion Profits and Losses

In the U.S., AbbVie recognizes revenues on sales to third parties and we recognize our 50% share of the co-

promotion profits or losses as a component of total revenues in our consolidated statements of income. The 
collaboration began selling ZINBRYTA in the U.S. in the third quarter of 2016. For the years ended December 31, 
2017 and 2016, we recognized a net reduction in revenue of $16.9 million and $21.9 million, respectively, to reflect 
our share of an overall net loss within the collaboration.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The following table provides a summary of the U.S. collaboration and our share of the co-promotion losses on 

ZINBRYTA in the U.S.:

(In millions)
Product revenues, net............................................................................................. $
Costs and expenses...............................................................................................

Co-promotion losses in the U.S. .............................................................................. $
Biogen's share of co-promotion losses in the U.S. .................................................... $

2017

2016

53.1 $

92.6

39.5 $
16.9 $

6.1

50.0

43.9
21.9

For the Year Ended December 31,

In the E.U. and Canada, we recognize revenues on sales to third parties in product revenues, net in our 

consolidated statements of income. We also record the related cost of revenues and sales and marketing expenses 
to their respective line items in our consolidated statements of income as these costs are incurred. We reimburse 
AbbVie for their 50% share of the co-promotion profits or losses in the E.U. and Canada. This reimbursement is 
recognized in collaboration profit (loss) sharing in our consolidated statements of income. We began to recognize 
product revenues on sales of ZINBRYTA in the E.U. in the third quarter of 2016. For the year ended December 31, 
2017, we recognized net expense of $1.3 million to reflect AbbVie's 50% sharing of the net collaboration profits in 
the E.U. and Canada, as compared to net income recognized of $4.9 million to reflect AbbVie's 50% sharing of the 
net collaboration losses in the E.U. and Canada in the prior year. 

Acorda

In June 2009 we entered into a collaboration and license agreement with Acorda Therapeutics, Inc. (Acorda) to 

develop and commercialize products containing fampridine, such as FAMPYRA, in markets outside the U.S. We are 
responsible for all regulatory activities and the future clinical development of related products in those markets. 

Under this agreement, we pay tiered royalties based on the level of ex-U.S. net sales and potential milestone 
payments based on the successful achievement of certain regulatory and commercial milestones, which would be 
capitalized as intangible assets upon achievement of the milestones and amortized utilizing an economic 
consumption model. The next expected milestone would be $15.0 million, due if ex-U.S. net sales reach $100.0 
million over a period of four consecutive quarters. Royalty payments are recognized in cost of sales within our 
consolidated statements of income.

In connection with the collaboration and license agreement, we also entered into a supply agreement with 

Acorda for the commercial supply of FAMPYRA. This agreement is a sublicense arrangement of an existing 
agreement between Acorda and Alkermes, who acquired Elan Drug Technologies, the original party to the license with 
Acorda. 

For the years ending December 31, 2017, 2016 and 2015, total cost of sales related to royalties and 

commercial supply of FAMPYRA reflected in our consolidated statements of income were $34.0 million, $31.5 
million and $30.6 million, respectively.

Ionis Pharmaceuticals, Inc. 

Product Collaborations 

SPINRAZA

In January 2012 we entered into an exclusive worldwide option and collaboration agreement with Ionis to 
develop and commercialize SPINRAZA for the treatment of SMA. During 2014 we amended this agreement to adjust 
the amount of potential additional payments and terms of the exercise of our opt-in right to license SPINRAZA, which 
included providing for additional opt-in scenarios, based on the filing or acceptance of a New Drug Application (NDA) 
with the FDA or marketing authorization application with the EMA. Consistent with the initial agreement, Ionis 
remained responsible for conducting the pivotal/Phase 3 trials and we provided input on the clinical trial design and 
regulatory strategy for the development of SPINRAZA.

SPINRAZA was approved for the treatment of SMA in the U.S., E.U. and Japan in December 2016, June 2017 

and July 2017, respectively.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

For the years ended December 31, 2017 and 2016, we recognized product revenues totaling $883.7 million 

and $4.6 million, respectively, on our sales of SPINRAZA. Under our agreement with Ionis, we make royalty payments 
to Ionis on annual worldwide net sales of SPINRAZA using a tiered royalty rate between 11% and 15%, which are 
recognized in cost of sales within our consolidated statements of income. Royalty cost of sales related to sales of 
SPINRAZA for the years ended December 31, 2017 and 2016 totaled $112.4 million and $0.5 million, respectively.

Upon entering into this agreement, we made an upfront payment of $29.0 million to Ionis. In addition, during 
2017 we made milestone payments to Ionis totaling $150.0 million related to the marketing approvals discussed 
above, which were capitalized in intangible assets, net in our consolidated balance sheets. During the third quarter 
of 2016, upon the exercise of our option to develop and commercialize SPINRAZA, we also paid a $75.0 million 
license fee to Ionis, which was recognized as research and development expense in our consolidated statements of 
income. 

During 2017 no clinical trial payments were made to Ionis due to the completion of study activities. During 
2016 and 2015, we made clinical trial payments of $35.3 million and $42.8 million, respectively, related to the 
advancement of the program, which were recorded in investments and other assets in our consolidated balance 
sheets as they represented prepaid research and development expenditures. As of December 31, 2017, these 
prepaid research and development amounts were fully expensed as the services were provided.

For the years ending December 31, 2017, 2016 and 2015, $234.5 million, $257.8 million and $74.9 million, 

respectively, were reflected in total costs and expenses in our consolidated statements of income related to the 
advancement and commercialization of the program. 

Antisense Therapeutics

In December 2012 we entered into an agreement with Ionis for the development and commercialization of up 

to three therapeutic targets. 

Under this agreement, Ionis is responsible for global development of any product candidate through the 
completion of a Phase 2 trial and we will provide advice on the clinical trial design and regulatory strategy. We have 
an option to license the product candidate until completion of the Phase 2 trial. If we exercise our option, we will pay 
a license fee of up to $70.0 million to Ionis and assume global development, regulatory and commercialization 
responsibilities. Ionis is eligible to receive up to another $130.0 million in milestone payments upon the 
achievement of certain regulatory milestones as well as royalties on future sales if we successfully develop the 
product candidate after option exercise. 

Upon entering into this agreement, we made an upfront payment of $30.0 million to Ionis and agreed to make 

potential additional payments, prior to licensing, of up to $10.0 million based on the development of the selected 
product candidate as well as a mark-up of the cost estimate of the Phase 1 and Phase 2 trials. During 2015 we 
recognized this $10.0 million developmental milestone upon the selection of BIIB080 (also known as IONIS-MAPTRx), 
which is currently in Phase 1 development. 

Research Collaborations

2013 Long-term Strategic Research Agreement

In September 2013 we entered into a six-year research collaboration agreement with Ionis under which both 

companies collaborate to perform discovery level research and subsequent development and commercialization 
activities of antisense or other therapeutics for the treatment of neurological disorders. Under the collaboration, 
Ionis will perform research on a set of neurological targets identified within this agreement. Once the research has 
reached a specific stage of development, we will make a determination whether antisense therapy is the preferred 
approach to developing a therapeutic candidate or whether another modality is preferred. If an antisense approach is 
selected, Ionis will continue development and identify a potential product candidate. If another modality is selected, 
we will assume responsibility for identifying a potential product candidate and assume development responsibility for 
development in that modality. 

Under this agreement, we made an upfront payment of $100.0 million to Ionis, of which $75.0 million was 

recorded as research and development expense representing the value of intellectual property purchased that had 
not reached technological feasibility. We recognized the remaining $25.0 million as prepaid research and discovery 
services, representing the value of the Ionis full time equivalent employee resources required by the collaboration to 
provide research and discovery services over the term of the collaboration. 

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Ionis is also eligible to receive milestone payments, license fees and royalty payments for all product 
candidates developed through this collaboration, with the specific amount dependent upon the modality of the 
product candidate advanced by us. During the years ending December 31, 2017, 2016 and 2015, we triggered 
milestones of $12.0 million, $5.5 million and $20.0 million, respectively, related to the advancement of IONIS-
SOD1Rx for the treatment of ALS and other neurological targets identified.

For non-ALS antisense product candidates, Ionis will be responsible for global development through the 
completion of a Phase 2 trial and we will provide advice on the clinical trial design and regulatory strategy. For ALS 
antisense product candidates, we are responsible for global development, clinical trial design and regulatory 
strategy. We have an option to license a product candidate until completion of the Phase 2 trial. If we exercise our 
option, we will pay Ionis up to a $70.0 million license fee and assume global development, regulatory and 
commercialization responsibilities. Ionis could receive additional milestone payments upon the achievement of 
certain regulatory milestones of up to $130.0 million, plus additional amounts related to the cost of clinical trials 
conducted by Ionis under the collaboration, and royalties on future sales if we successfully develop the product 
candidate after option exercise.   

For product candidates using a different modality, we will be responsible for global development through all 
stages and will pay Ionis up to $90.0 million upon the achievement of certain regulatory milestones and royalties on 
future sales if we successfully develop the product candidate. 

2017 SMA Collaboration Agreement

In December 2017 we entered into a new collaboration agreement with Ionis to identify new antisense 
oligonucleotide drug candidates for the treatment of SMA. Under this agreement, we will have the option to license 
therapies arising out of this collaboration and will be responsible for their development and commercialization of 
these therapies.

Upon entering into this agreement, we made a $25.0 million upfront payment to Ionis and we may pay Ionis up 
to $260.0 million in additional development and regulatory milestone payments if new drugs advance to marketing 
approval. Upon commercialization, we may also pay Ionis up to $800.0 million in additional performance-based 
milestone payments and tiered royalties on potential net sales of such therapies.

Eisai Co., Ltd. 

BAN2401 and E2609 Collaboration

In March 2014 we entered into a collaboration agreement with Eisai (Eisai Collaboration Agreement) to jointly 
develop and commercialize two Eisai product candidates for the treatment of AD, BAN2401, a monoclonal antibody 
that targets amyloid-beta aggregates, and E2609, a BACE inhibitor. Under the Eisai Collaboration Agreement, Eisai 
serves as the global operational and regulatory lead for both compounds with all costs, including research, 
development, sales and marketing expenses shared equally by us and Eisai; and following marketing approval in 
major markets, such as the U.S., the E.U. and Japan, we and Eisai would co-promote BAN2401 and E2609 and 
share profits equally. In smaller markets, Eisai will distribute these products and pay us a royalty. In addition, the 
Eisai Collaboration Agreement provides both parties with certain rights and obligations in the event of a change in 
control of either party.

The Eisai Collaboration Agreement also provided Eisai with an option to jointly develop and commercialize 

aducanumab (Aducanumab Option) and an option to jointly develop and commercialize one of our anti-tau 
monoclonal antibodies (Anti-Tau Option). Upon exercise of each of the Aducanumab Option and the Anti-Tau Option, a 
separate collaboration agreement would be entered into with Eisai on terms and conditions that mirror the Eisai 
Collaboration Agreement.

In October 2017 Eisai exercised its Aducanumab Option and we entered into a new collaboration agreement for 

the joint development and commercialization of aducanumab (Aducanumab Collaboration Agreement). Eisai has not 
yet exercised its Anti-Tau Option.

Under the Aducanumab Collaboration Agreement, both companies will continue to jointly develop BAN2401 and 

E2609 in accordance with the Eisai Collaboration Agreement; however, we are no longer required to pay Eisai any 
milestone payments for products containing BAN2401 and we are no longer entitled to any potential development 
and commercial milestone payments from Eisai in relation to aducanumab.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

A summary of activity related to the Eisai Collaboration Agreement is as follows:

(In millions)
Total development expense incurred by the collaboration in
development of BAN2401 and E2609........................................ $
Biogen's share of BAN2401 and E2609 development expense
reflected in our consolidated statements of income, excluding
upfront and milestone payments ............................................... $

For the Years Ended December 31,

2017

2016

2015

146.2 $

95.1 $

84.1

74.3 $

50.5 $

40.4

During the fourth quarter of 2016 we recognized a $50.0 million milestone payment related to the initiation of 

a Phase 3 trial for E2609, which is included in research and development expense in our consolidated statements of 
income. We could pay Eisai up to an additional $625.0 million under the Eisai Collaboration Agreement based on the 
future achievement of certain development, regulatory and commercial milestones.

Aducanumab Collaboration Agreement

Under the Aducanumab Collaboration Agreement, we will continue to lead the ongoing Phase 3 development of 
aducanumab and will remain responsible for 100% of development costs for aducanumab incurred in support of this 
agreement until April 2018. Eisai will then reimburse us for 15% of aducanumab development expenses for the 
period April 2018 through December 2018, and 45% thereafter. Upon commercialization, both companies will co-
promote aducanumab with a region-based profit split. We will receive a 55% share of the potential profits (losses) in 
the U.S., a 68.5% share of the potential profits (losses) in the E.U. and a 20% share of the potential profits (losses) 
in Japan and Asia, excluding China and South Korea. The companies will continue to share equally in the potential 
profits (losses) in rest of world markets. 

We and Eisai also agreed to co-promote AVONEX, TYSABRI and TECFIDERA in Japan in certain settings and 

Eisai will distribute AVONEX, TYSABRI, TECFIDERA and PLEGRIDY in India and other Asia-Pacific markets, excluding 
China.  

During the year ended December 31, 2017, $263.4 million was reflected in research and development expense 

in our consolidated statements of income related to the advancement of our aducanumab program.

Anti-Tau Option

Eisai may exercise the Anti-Tau Option after completion of the Phase 1 clinical trial of such anti-tau monoclonal 

antibody. If Eisai exercises its Anti-Tau Option, we will receive an upfront payment from Eisai and will be entitled to 
additional development and commercial milestone payments.

Bristol-Myers Squibb Company

In June 2017 we completed an exclusive license agreement with Bristol-Myers Squibb Company (BMS) for 
BIIB092 (formerly known as BMS-986168), a Phase 2-ready experimental medicine with potential in AD and PSP. 
BIIB092 is an antibody targeting tau, the protein that forms the deposits, or tangles, in the brain associated with AD 
and other neurodegenerative tauopathies such as PSP. 

Under this agreement, we received worldwide rights to BIIB092 and are responsible for the full development 

and global commercialization of BIIB092 in AD and PSP. 

Upon entering into this agreement, we made an upfront payment of $300.0 million to BMS and we may pay 
BMS up to $410.0 million in additional milestone payments, and potential royalties. We also assumed all remaining 
obligations to the former shareholders of iPierian, Inc. (iPierian) related to BMS’s acquisition of iPierian in 2014. In 
June 2017 we recognized a $60.0 million developmental milestone payable to the former shareholders of iPierian 
upon dosing of the first patient in the Phase 2 PSP study for BIIB092 and we may pay the former shareholders of 
iPierian up to $490.0 million in remaining milestone payments, and potential royalties. 

Both the $300.0 million upfront payment and the $60.0 million developmental milestone payment were 

recognized as research and development expense in our consolidated statements of income for the year ended 
December 31, 2017. 

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Alkermes

In November 2017 we entered into an exclusive license and collaboration agreement with Alkermes Pharma 

Ireland Limited, a subsidiary of Alkermes plc (Alkermes), for BIIB098 (formerly known as ALKS 8700), an oral 
monomethyl fumarate prodrug in Phase 3 development for the treatment of relapsing forms of MS. 

Under this agreement, we received an exclusive, worldwide license to develop and commercialize BIIB098 and 
will pay Alkermes a mid-teens percentage royalty on potential worldwide net sales of BIIB098. Royalties payable on 
net sales of BIIB098 are subject to tiered minimum payment requirements for a period of five years following FDA 
approval. Alkermes is eligible to receive royalties in the mid-single digits to low-teen percentages of annual net sales 
upon successful development and commercialization of new product candidates other than BIIB098. Alkermes will 
maintain responsibility for regulatory interactions with the FDA through the potential approval of the NDA for BIIB098 
for the treatment of MS. 

Upon entering into this agreement, we made a $28.0 million upfront payment to Alkermes representing our 

share of BIIB098 development costs already incurred in 2017. Beginning in 2018 we are responsible for all 
development expenses related to BIIB098. In December 2017 we also recognized a $50.0 million expense, which is 
expected to be paid to Alkermes in early 2018, enabling the continuation of the agreement to develop BIIB098. Both 
the $28.0 million upfront payment and $50.0 million continuation payment were recognized as research and 
development expense in our consolidated financial statements for the year ended December 31, 2017. 

We may also pay Alkermes up to approximately $150.0 million in additional future milestone payments upon 
certain regulatory achievements related to BIIB098 under this collaboration. For the year ended December 31, 2017, 
we recorded $80.3 million in research and development expense in our consolidated statements of income related 
to this collaboration.

In connection with the license and collaboration agreement, we may also enter into a supply agreement with 
Alkermes for the commercial supply of BIIB098 and other products developed under the license and collaboration 
agreement.

Applied Genetic Technologies Corporation

In July 2015 we entered into a collaboration and license agreement to develop gene-based therapies for 
multiple ophthalmic diseases with Applied Genetic Technologies Corporation (AGTC). This collaboration is focused on 
the development of a portfolio of AGTC’s therapeutic programs, including both a clinical-stage candidate for X-linked 
Retinoschisis (XLRS) and a pre-clinical candidate for the treatment of X-Linked Retinitis Pigmentosa (XLRP). This 
agreement also provides us with options for early stage discovery programs in two ophthalmic diseases and one 
non-ophthalmic condition, as well as an equity investment in AGTC.

Under this agreement we received worldwide commercialization rights for the XLRS and XLRP programs. AGTC 

will lead the clinical development programs of XLRS through product approval and of XLRP through the completion of 
first-in-human trials and we will support the related clinical development costs, subject to certain conditions, 
following the first-in-human study for XLRS and IND-enabling studies for XLRP. AGTC has an option to share 
development costs and profits after the initial clinical trial data becomes available, and an option to co-promote the 
second of these products approved in the U.S.

Upon entering into this agreement we made an upfront payment of $124.0 million to AGTC. AGTC is also 
eligible to receive development, regulatory and commercial milestone payments aggregating in excess of $1.1 billion, 
which includes up to $467.5 million collectively for the two lead programs and up to $592.5 million across the 
discovery programs. AGTC is also eligible to receive royalties in the mid-single digit to mid-teen percentages of 
annual net sales upon successful development and commercialization of new product candidates. 

The $124.0 million upfront payment reflected a $30.0 million equity investment in AGTC, prepaid research and 
development expenditures of $58.4 million and total licensing and other fees of $35.6 million. The $35.6 million in 
total licensing and other fees were recognized as a charge to research and development expense in our consolidated 
statements of income for the year ended December 31, 2015. The $30.0 million equity investment and the $58.4 
million of prepaid research and development expenditures were recorded in investments and other assets in our 
consolidated balance sheets. These prepaid research and development amounts are being expensed as the 
services are provided, of which $11.1 million remains as a prepaid asset as of December 31, 2017. 

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

For the years ended December 31, 2017, 2016 and 2015 we recorded $27.5 million, $26.5 million and $54.5 

million, respectively, which were reflected in research and development expense in our consolidated statements of 
income related to this collaboration. 

In connection with the collaboration and license agreement, we also received a manufacturing license under 

which we received an exclusive license to use AGTC’s proprietary technology platform to make AAV vectors for up to 
six genes, three of which are in AGTC’s discretion, in exchange for payment of milestones and royalties.

University of Pennsylvania

In May 2016 we entered into a collaboration and alliance with the University of Pennsylvania (UPenn) to 
advance gene therapy and gene editing technologies. The collaboration is primarily focused on the development of 
therapeutic approaches that target the eye, skeletal muscle and the central nervous system. The alliance is also 
focused on the research and validation of next-generation gene transfer technology using adeno-associated virus 
gene delivery vectors and exploring the expanded use of genome editing technology as a potential therapeutic 
platform.

Upon entering into this agreement we made an upfront payment of $20.0 million to UPenn, which was recorded 

as research and development expense in our consolidated statements of income, and made prepaid research and 
development expenditures of $15.0 million, which was recorded in investments and other assets in our consolidated 
balance sheets. During 2017, we made additional prepaid research and development expenditures to UPenn of 
$29.1 million related to the advancement of these programs. These prepaid research and development amounts are 
being expensed as the services are provided, of which $12.7 million remains as a prepaid asset as of December 31, 
2017. We also expect to fund an additional $18.4 million in additional research and development costs in seven 
preclinical research and development programs, as well as the exploration of genome-editing technology.

If all of the collaborations programs are successful and we exercise all of our options under the UPenn 
collaboration and alliance, we may be required to make future payments of over $2.0 billion in research funding, 
options and milestone payments. UPenn is also eligible to receive royalties in the mid-single digit to mid-teens 
percentages of annual net sales upon successful development and commercialization of new product candidates.

For the years ended December 31, 2017 and 2016, we recorded $33.0 million and $27.8 million, respectively, 

in research and development expense in our consolidated statements of income related to this collaboration.  

Other Research and Discovery Arrangements 

For the years ended December 31, 2017, 2016 and 2015, we entered into several research, discovery and 

other related arrangements that resulted in $10.0 million, $10.3 million and $9.7 million, respectively, recorded as 
research and development expense in our consolidated statements of income. 

These arrangements may include the potential for future milestone payments based on the achievement of 

certain clinical and commercial development payable over a period of several years. 

Samsung Bioepis

Joint Venture Agreement

In February 2012 we entered into a joint venture agreement with Samsung Biologics, establishing an entity, 

Samsung Bioepis, to develop, manufacture and market biosimilar pharmaceuticals. Samsung Biologics contributed 
280.5 billion South Korean won (approximately $250.0 million) for an 85% stake in Samsung Bioepis and we 
contributed approximately 49.5 billion South Korean won (approximately $45.0 million) for the remaining 15% 
ownership interest. Under the joint venture agreement, we have no obligation to provide any additional funding and 
our ownership interest may be diluted due to financings in which we do not participate. As of December 31, 2017, 
our ownership interest is approximately 5%, which reflects the effect of additional equity financings in which we did 
not participate. We maintain an option to purchase additional stock in Samsung Bioepis that would allow us to 
increase our ownership percentage up to 49.9%. The exercise of this option is within our control and is based on 
paying for 49.9% of the total investment made by Samsung Biologics into Samsung Bioepis in excess of what we 
have already contributed under the joint venture agreement plus a rate that will represent their return on capital. If 
we do not exercise this option by mid-2018, this option will expire and Samsung Biologics will have the right to 
purchase all of Samsung Bioepis’ shares then held by us.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

We account for this investment under the equity method of accounting as we maintain the ability to exercise 

significant influence over Samsung Bioepis through a presence on the entity’s Board of Directors and our contractual 
relationship. Under the equity method, we recorded our original investment at cost and subsequently adjust the 
carrying value of our investment for our share of equity in the entity’s income or losses according to our percentage 
of ownership. We recognize our share of the results of operations related to our investment in Samsung Bioepis one 
quarter in arrears when the results of the entity become available, which is reflected as equity in loss of investee, 
net of tax in our consolidated statements of income. During the year ended December 31, 2015, we recognized a 
loss on our investment of $12.5 million. During 2015, as our share of losses exceeded the carrying value of our 
investment, we suspended recognizing additional losses and will continue to do so unless we commit to providing 
additional funding.

Commercial Agreement

In December 2013 pursuant to our rights under the joint venture agreement with Samsung Biologics, we 
entered into an agreement with Samsung Bioepis to commercialize, over a 10-year term, three anti-tumor necrosis 
factor (TNF) biosimilar product candidates in Europe and in the case of one anti-TNF biosimilar, Japan. Under this 
agreement, we have made total upfront and clinical development milestone payments of $46.0 million, all of which 
have been recorded as research and development expense in our consolidated statements of income as the 
programs they relate to had not achieved regulatory approval. We also agreed to make additional milestone 
payments of $25.0 million upon regulatory approval in the E.U. for each of the three anti-TNF biosimilar product 
candidates. During the years ended December 31, 2017 and 2016, we paid $25.0 million and $50.0 million, 
respectively, in milestone payments, which have been capitalized in intangible assets, net in our consolidated 
balance sheets as IMRALDI received regulatory approval in the E.U. in August 2017, BENEPALI received regulatory 
approval in the E.U. in January 2016 and FLIXABI received regulatory approval in the E.U. in May 2016.

We began to recognize revenues on sales of BENEPALI in the E.U. in the first quarter of 2016 and FLIXABI in 

the E.U. in the third quarter of 2016. We reflect revenues on sales of BENEPALI and FLIXABI to third parties in 
product revenues, net in our consolidated statements of income and record the related cost of revenues and sales 
and marketing expenses in our consolidated statements of income to their respective line items when these costs 
are incurred. We share 50% of the profit or loss related to our commercial agreement with Samsung Bioepis. This 
profit sharing with Samsung Bioepis is recognized in collaboration profit (loss) sharing in our consolidated 
statements of income. For the years ended December 31, 2017 and 2016, we recognized a net expense of $111.0 
million and $15.1 million, respectively, to reflect Samsung Bioepis's 50% sharing of the net collaboration profits. 

Other Services

Simultaneous with the formation of Samsung Bioepis, we also entered into a license agreement, a technical 

development services agreement and a manufacturing agreement with Samsung Bioepis. Under the license 
agreement, we granted Samsung Bioepis an exclusive license to use, develop, manufacture and commercialize 
biosimilar products created by Samsung Bioepis using Biogen product-specific technology. In exchange, we will 
receive single digit royalties on all biosimilar products developed and commercialized by Samsung Bioepis. Under the 
technical development services agreement, we provide Samsung Bioepis technical development and technology 
transfer services, which include, but are not limited to, cell culture development, purification process development, 
formulation development and analytical development. Under our manufacturing agreement, we manufacture clinical 
and commercial quantities of bulk drug substance of biosimilar products for Samsung Bioepis pursuant to 
contractual terms. Under limited circumstances, we may also supply Samsung Bioepis with quantities of drug 
product of biosimilar products for use in clinical trials through arrangements with third-party contract manufacturers. 

For the years ended December 31, 2017, 2016 and 2015, we recognized $42.7 million, $20.2 million and 
$62.9 million, respectively, in revenues in relation to these services, which is reflected as a component of other 
revenues in our consolidated statements of income. 

21. 

Litigation

We are currently involved in various claims and legal proceedings, including the matters described below. For 
information as to our accounting policies relating to claims and legal proceedings, including use of estimates and 
contingencies, please read Note 1, Summary of Significant Accounting Policies, to these consolidated financial 
statements.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

With respect to some loss contingencies, an estimate of the possible loss or range of loss cannot be made 

until management has further information, including, for example, (i) which claims, if any, will survive dispositive 
motion practice; (ii) information to be obtained through discovery; (iii) information as to the parties' damages claims 
and supporting evidence; (iv) the parties’ legal theories; and (v) the parties' settlement positions. 

The claims and legal proceedings in which we are involved also include challenges to the scope, validity or 
enforceability of the patents relating to our products, pipeline or processes, and challenges to the scope, validity or 
enforceability of the patents held by others. These include claims by third parties that we infringe their patents. An 
adverse outcome in any of these proceedings could result in one or more of the following and have a material impact 
on our business or consolidated results of operations and financial position: (i) loss of patent protection; (ii) inability 
to continue to engage in certain activities; and (iii) payment of significant damages, royalties, penalties and/or 
license fees to third parties.

Loss Contingencies 

Qui Tam Litigation

On July 6, 2015, a qui tam action filed on behalf of the United States and certain states was unsealed by the 
U.S. District Court for the District of Massachusetts. The action alleges sales and promotional activities in violation 
of the federal False Claims Act and state law counterparts, and seeks single and treble damages, civil penalties, 
interest, attorneys’ fees and costs. Our motion to dismiss is pending. The United States has not made an 
intervention decision. An estimate of the possible loss or range of loss cannot be made at this time.

Securities Litigation

We and certain current and former officers are defendants in an action filed by a shareholder on October 20, 

2016 in the U.S. District Court for the District of Massachusetts alleging violations of federal securities laws under 
15 U.S.C §78j(b) and §78t(a) and 17 C.F.R. §240.10b-5 and seeking a declaration of the action as a class action 
and an award of damages, interest and attorneys' fees. An estimate of the possible loss or range of loss cannot be 
made at this time.

Other Matters

Abbreviated New Drug Application (ANDA) Litigation relating to TECFIDERA

In June, July, and September 2017 and January 2018, we initiated patent infringement proceedings pursuant to 

the Hatch-Waxman act in the U.S. District Court for the District of Delaware against Amneal Pharmaceuticals LLC, 
Aurobindo Pharma U.S.A., Inc., Caribe Holdings (Cayman) Co. Ltd. DBA Puracap Caribe, Puracap International LLC, 
Graviti Pharmaceuticals Pvt. Ltd., Hetero USA, Inc., Impax Laboratories, Inc., Prinston Pharmaceutical Inc., Slayback 
Pharma LLC, Teva Pharmaceuticals USA, Inc., Alkem Laboratories Ltd., Cipla Limited, Glenmark Pharmaceuticals Ltd., 
Lupin Atlantis Holdings SA, Macleods Pharmaceuticals, Ltd., MSN Laboratories Pvt. Ltd., Pharmathen S.A., Shipla 
Medicare Limited, Sun Pharma Global FZE, Torrent Pharmaceuticals Ltd., TWi Pharmaceuticals, Inc., Windlas 
Healthcare Pvt. Ltd., Accord Healthcare Inc., Par Pharmaceutical Inc., Sandoz Inc., Sawai USA, Inc. and Zydus 
Pharmaceuticals (USA) Inc. In addition, we initiated patent infringement proceedings pursuant to the Hatch-Waxman 
act against Stason Pharmaceuticals, Inc. in the U.S. District Court for the Central District of California, Zydus 
Pharmaceuticals (USA) Inc. in the U.S. District Court for the District of New Jersey, Accord Healthcare Inc. in the U.S. 
District Court for the Middle District of North Carolina, Par Pharmaceutical Inc. in the U.S. District Court for the 
Southern District of New York, Sandoz Inc. in the U.S. District Court for the District of Colorado and Mylan 
Pharmaceuticals Inc. in the U.S. District Court for the Northern District of West Virginia. 

The cases against Accord Healthcare Inc., Zydus Pharmaceuticals (USA) Inc. and Sandoz Inc. have been 

dismissed in the North Carolina, New Jersey and Colorado courts but will continue against those parties in Delaware. 
The cases against Par Pharmaceutical Inc. in both New York and Delaware have been dismissed because Par 
Pharmaceutical Inc.’s ANDA application has been withdrawn. The case against Stason Pharmaceuticals, Inc. in 
California has been dismissed, but the case against its partner Sawai USA, Inc. will proceed in Delaware. 

We expect a trial in the Delaware actions in December 2019, and a trial has been set in the West Virginia 

action in February 2020.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Interference Proceeding with Forward Pharma

In April 2015 the U.S. Patent and Trademark Office (USPTO) declared an interference between Forward 
Pharma’s pending U.S. Patent Application No. 11/576,871 and our U.S. Patent No. 8,399,514 (the '514 patent). 
The '514 patent includes claims covering the treatment of MS with 480 mg of dimethyl fumarate as provided for in 
our TECFIDERA label. In March 2017 the USPTO ruled against Forward Pharma. Forward Pharma has appealed to the 
U.S. Court of Appeals for the Federal Circuit and the appeal is pending. For additional information regarding this 
matter, please read Note 7, Intangibles Assets and Goodwill, to these consolidated financial statements.

European Patent Office Oppositions

In 2016 the EPO decided to revoke our European patent number 2 137 537 (the '537 patent), which we have 

appealed. The '537 patent includes claims covering the treatment of MS with 480 mg of dimethyl fumarate as 
provided for in our TECFIDERA label. 

In January 2018 the EPO announced its decision revoking Forward Pharma’s European Patent No. 2 801 355, 

which was issued in May 2015 and expires in October 2025. Forward Pharma has stated that it expects to file an 
appeal to the Technical Board of Appeal of the EPO. The settlement and license agreement that we entered with 
Forward Pharma in January 2017 did not resolve the issues pending in this proceeding and we and Forward Pharma 
intend to permit the Technical Board of Appeal and the Enlarged Board of Appeal, as applicable, to make a final 
determination. For additional information regarding this matter, please read Note 7, Intangibles Assets and Goodwill, 
to these consolidated financial statements.

Patent Revocation Matter

Swiss Pharma International AG filed actions in the District Court of The Hague (on January 11, 2016), the 

German Patents Court (on March 3, 2016) and the Commercial Court of Rome (November 2017) to invalidate the 
Dutch, German and Italian counterparts of our European Patent Number 1 485 127 (“Administration of agents to 
treat inflammation”) ('127 patent), which was issued in June 2011 and concerns administration of natalizumab 
(TYSABRI) to treat MS. The patent expires in February 2023. The Dutch counterpart was ruled invalid and we have 
appealed. In November 2018 Bioeq gmbh (an entity associated with Swiss Pharma and Polpharma) brought an 
action in the Polish Patent Office seeking to revoke the Polish counterpart of the ‘127 patent. In January 2018 the 
German court announced that the German counterpart was invalid. No date for a hearing on the merits has yet been 
set in the Italian action.

'755 Patent Litigation

On May 28, 2010, Biogen MA Inc. (formerly Biogen Idec MA Inc.) filed a complaint in the U.S. District Court for 

the District of New Jersey alleging infringement by Bayer Healthcare Pharmaceuticals Inc. (Bayer) (manufacturer, 
marketer and seller of BETASERON and manufacturer of EXTAVIA), EMD Serono, Inc. (EMD Serono) (manufacturer, 
marketer and seller of REBIF), Pfizer Inc. (Pfizer) (co-marketer of REBIF) and Novartis Pharmaceuticals Corp. 
(Novartis) (marketer and seller of EXTAVIA) of our U.S. Patent No. 7,588,755 ('755 Patent), which claims the use of 
interferon beta for immunomodulation or treating a viral condition, viral disease, cancers or tumors. The complaint 
seeks monetary damages, including lost profits and royalties. Bayer had previously filed a complaint against us in 
the same court, on May 27, 2010, seeking a declaratory judgment that it does not infringe the '755 Patent and that 
the patent is invalid, and seeking monetary relief in the form of attorneys' fees, costs and expenses. 

Bayer, Pfizer, Novartis and EMD Serono have all filed counterclaims seeking declaratory judgments of patent 
invalidity and non-infringement, and seeking monetary relief in the form of costs and attorneys' fees. The trial against 
EMD Serono and Pfizer commenced in mid-January 2018 and is ongoing. A trial date against Bayer and Novartis has 
not yet been set.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Government Matters

We have learned that state and federal governmental authorities are investigating our sales and promotional 

practices and have received related subpoenas. We are cooperating with the government.

We have received subpoenas and other requests from the federal government for documents and information 

relating to our relationship with non-profit organizations that provide assistance to patients taking drugs sold by 
Biogen and Biogen's co-pay assistance programs. We are cooperating with the government.

On July 1, 2016, we received civil investigative demands from the federal government for documents and 
information relating to our treatment of certain service agreements with wholesalers when calculating and reporting 
Average Manufacturer Prices in connection with the Medicaid Drug Rebate Program. We are cooperating with the 
government.

In July 2017 we learned that the Prosecution Office of Milan is investigating our interactions with certain 

healthcare providers in Italy. We are cooperating with the government.

Product Liability and Other Legal Proceedings

We are also involved in product liability claims and other legal proceedings generally incidental to our normal 
business activities. While the outcome of any of these proceedings cannot be accurately predicted, we do not believe 
the ultimate resolution of any of these existing matters would have a material adverse effect on our business or 
financial condition.

22.  Commitments and Contingencies

TYSABRI Contingent Payments

In 2013 we acquired from Elan full ownership of all remaining rights to TYSABRI that we did not already own or 

control. Under the acquisition agreement, we are obligated to make contingent payments to Elan of 18% on annual 
worldwide net sales up to $2.0 billion and 25% on annual worldwide net sales that exceed $2.0 billion. Royalty 
payments to Elan and other third parties are recognized as cost of sales in our consolidated statements of income. 
Elan was acquired by Perrigo Company plc (Perrigo) in December 2013, and Perrigo subsequently sold its rights to 
these payments to a third party effective January 2017.

Contingent Consideration related to Business Combinations

In connection with our acquisitions of Convergence, Stromedix and BIN, we agreed to make additional 

payments based upon the achievement of certain milestone events. 

As the acquisitions of Convergence, Stromedix and BIN, occurred after January 1, 2009, we recorded the 
contingent consideration liabilities associated with these transactions at their fair value on the acquisition date and 
revalue these obligations each reporting period. We may pay up to approximately $1.1 billion in remaining 
milestones related to these acquisitions. For additional information on our acquisition of Convergence please read 
Note 2, Acquisitions, to these consolidated financial statements.

Fumapharm AG

In 2006 we acquired Fumapharm AG. As part of this acquisition we acquired FUMADERM and TECFIDERA 
(together, Fumapharm Products). We paid $220.0 million upon closing of the transaction and agreed to pay an 
additional $15.0 million if a Fumapharm Product was approved for MS in the U.S. or E.U. In the second quarter of 
2013 we paid this $15.0 million contingent payment as TECFIDERA was approved in the U.S. for MS by the FDA. We 
are also required to make additional contingent payments to former shareholders of Fumapharm AG or holders of 
their rights based on the attainment of certain cumulative sales levels of Fumapharm Products and the level of total 
net sales of Fumapharm Products in the prior 12-month period, as defined in the acquisition agreement. 

During 2017 we paid $1.2 billion in contingent payments as we reached the $11.0 billion, $12.0 billion, $13.0 

billion and $14.0 billion cumulative sales levels related to the Fumapharm Products in the fourth quarter of 2016 
and the first, second and third quarters of 2017, respectively, and accrued $600.0 million upon reaching $15.0 
billion and $16.0 billion in total cumulative sales of Fumapharm Products in the fourth quarter of 2017.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

We will owe an additional $300.0 million contingent payment for every additional $1.0 billion in cumulative 

sales level of Fumapharm Products reached if the prior 12 months sales of the Fumapharm Products exceed $3.0 
billion, until such time as the cumulative sales level reaches $20.0 billion, at which time no further contingent 
payments shall be due. If the prior 12 months sales of Fumapharm Products are less than $3.0 billion, contingent 
payments remain payable on a decreasing tiered basis. These payments will be accounted for as an increase to 
goodwill as incurred, in accordance with the accounting standard applicable to business combinations when we 
acquired Fumapharm. Any portion of the payment which is tax deductible will be recorded as a reduction to goodwill. 
Payments are due within 60 days following the end of the quarter in which the applicable cumulative sales level has 
been reached. 

Contingent Development, Regulatory and Commercial Milestone Payments

Based on our development plans as of December 31, 2017, we could make potential future milestone 
payments to third parties of up to approximately $4.2 billion, including approximately $0.7 billion in development 
milestones, approximately $1.5 billion in regulatory milestones and approximately $2.0 billion in commercial 
milestones as part of our various collaborations, including licensing and development programs. Payments under 
these agreements generally become due and payable upon achievement of certain development, regulatory or 
commercial milestones. Because the achievement of these milestones was not considered probable as of 
December 31, 2017, such contingencies have not been recorded in our financial statements. Amounts related to 
contingent milestone payments are not considered contractual obligations as they are contingent on the successful 
achievement of certain development, regulatory approval and commercial milestones. 

Other Funding Commitments

As of December 31, 2017, we have several on-going clinical studies in various clinical trial stages. Our most 

significant clinical trial expenditures are to CROs. The contracts with CROs are generally cancellable, with notice, at 
our option. We have recorded accrued expenses of approximately $40.0 million in our consolidated balance sheet 
for expenditures incurred by CROs as of December 31, 2017. We have approximately $460.0 million in cancellable 
future commitments based on existing CRO contracts as of December 31, 2017.

Tax Related Obligations

We exclude liabilities pertaining to uncertain tax positions from our summary of contractual obligations as we 

cannot make a reliable estimate of the period of cash settlement with the respective taxing authorities. As of 
December 31, 2017, we have approximately $77.3 million of net liabilities associated with uncertain tax positions.

As of December 31, 2017, we have accrued income tax liabilities of $989.6 million under the Transition Toll 
Tax, of which $78.3 million is expected to be paid within one year. The Transition Toll Tax will be paid over an eight-
year period, starting in 2018, and will not accrue interest.

Solothurn, Switzerland Facility

In December 2015, we purchased land in Solothurn, Switzerland and are building a large-scale biologics 

manufacturing facility at this site. We expect this facility to be operational by the end of the decade. As of 
December 31, 2017, we had contractual commitments of $270.0 million for the construction of this facility.

Leases

We rent laboratory and office space and certain equipment under non-cancelable operating leases. These 

lease agreements contain various clauses for renewal at our option and, in certain cases, escalation clauses 
typically linked to rates of inflation. Rental expense, net of sublease income under these leases, which terminate at 
various dates through 2028, amounted to $65.3 million, $68.7 million and $68.6 million in 2017, 2016 and 2015, 
respectively. In addition to rent, the leases may require us to pay additional amounts for taxes, insurance, 
maintenance and other operating expenses.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

As of December 31, 2017, minimum rental commitments under non-cancelable leases, net of income from 

subleases, for each of the next five years and total thereafter were as follows:

(In millions)
Minimum lease payments........... $
Less: income from subleases (1)

Net minimum lease
payments ............................ $

2018

2019

2020

2021

2022

Thereafter

Total

72.6 $
(24.3)

72.3 $
(24.7)

68.4 $
(23.9)

66.9 $
(22.3)

65.7 $ 271.1 $ 617.0
(188.5)
(71.3)
(22.0)

48.3 $

47.6 $

44.5 $

44.6 $

43.7 $ 199.8 $ 428.5

(1)  Represents sublease income expected to be received for the vacated manufacturing facility in Cambridge, MA, the vacated 

portion of our Weston, MA facility and other facilities throughout the world. 

Under certain of our lease agreements, we are contractually obligated to return leased space to its original 

condition upon termination of the lease agreement. At the inception of a lease with such conditions, we record an 
asset retirement obligation liability and a corresponding capital asset in an amount equal to the estimated fair value 
of the obligation. In subsequent periods, for each such lease, we record interest expense to accrete the asset 
retirement obligation liability to full value and depreciate each capitalized asset retirement obligation asset, both 
over the term of the associated lease agreement. Our asset retirement obligations were not significant as of 
December 31, 2017 or 2016.

23.    Guarantees

As of December 31, 2017 and 2016, we did not have significant liabilities recorded for guarantees.

We enter into indemnification provisions under our agreements with other companies in the ordinary course of 

business, typically with business partners, contractors, clinical sites and customers. Under these provisions, we 
generally indemnify and hold harmless the indemnified party for losses suffered or incurred by the indemnified party 
as a result of our activities. These indemnification provisions generally survive termination of the underlying 
agreement. The maximum potential amount of future payments we could be required to make under these 
indemnification provisions is unlimited. However, to date we have not incurred material costs to defend lawsuits or 
settle claims related to these indemnification provisions. As a result, the estimated fair value of these agreements 
is minimal. Accordingly, we have no liabilities recorded for these agreements as of December 31, 2017 and 2016.

24.    Employee Benefit Plans

We sponsor various retirement and pension plans. Our estimates of liabilities and expenses for these plans 

incorporate a number of assumptions, including expected rates of return on plan assets and interest rates used to 
discount future benefits.

401(k) Savings Plan

We maintain a 401(k) Savings Plan, which is available to substantially all regular employees in the U.S. over the 

age of 21. Participants may make voluntary contributions. We make matching contributions according to the 401(k) 
Savings Plan’s matching formula. All matching contributions and participant contributions vest immediately. The 
401(k) Savings Plan also holds certain transition contributions on behalf of participants who previously participated 
in the Biogen, Inc. Retirement Plan. The expense related to our 401(k) Savings Plan primarily consists of our 
matching contributions.

Expense related to our 401(k) Savings Plan totaled $42.6 million, $45.2 million and $51.8 million for the years 

ended December 31, 2017, 2016 and 2015, respectively.

F- 71

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Deferred Compensation Plan

We maintain a non-qualified deferred compensation plan, known as the Supplemental Savings Plan (SSP), 
which allows a select group of management employees in the U.S. to defer a portion of their compensation. The SSP 
also provides certain credits to highly compensated U.S. employees that are paid by the company. These credits are 
known as the Restoration Match. The deferred compensation amounts are accrued when earned. Such deferred 
compensation is distributable in cash in accordance with the rules of the SSP. Deferred compensation amounts 
under such plan as of December 31, 2017 and 2016 totaled approximately $109.8 million and $128.5 million, 
respectively, and are included in other long-term liabilities in our consolidated balance sheets. The SSP also holds 
certain transition contributions on behalf of participants who previously participated in the Biogen, Inc. Retirement 
Plan. The Restoration Match and participant contributions vest immediately. Distributions to participants can be 
either in one lump sum payment or annual installments as elected by the participants.

Pension Plans

Our retiree benefit plans include defined benefit plans for employees in our affiliates in Switzerland and 
Germany as well as other insignificant defined benefit plans in certain other countries where we maintain an 
operating presence.

Our Swiss plan is a government-mandated retirement fund that provides employees with a minimum investment 
return. The minimum investment return is determined annually by the Swiss government and was 1.00% in 2017 and 
1.25% in 2016 and 1.75% in 2015, respectively. Under the Swiss plan, both we and certain of our employees with 
annual earnings in excess of government determined amounts are required to make contributions into a fund 
managed by an independent investment fiduciary. Employer contributions must be in an amount at least equal to the 
employee’s contribution. Minimum employee contributions are based on the respective employee’s age, salary and 
gender. 

As of December 31, 2017 and 2016, the Swiss plan had an unfunded net pension obligation of approximately 

$48.3 million and $39.1 million, respectively, and plan assets that totaled approximately $83.7 million and $68.6 
million, respectively. In 2017, 2016 and 2015, we recognized expense totaling $12.3 million, $15.3 million and 
$12.9 million, respectively, related to our Swiss plan.

The obligations under the German plans are unfunded and totaled $43.5 million and $35.4 million as of 

December 31, 2017 and 2016, respectively. Net periodic pension cost related to the German plans totaled $5.2 
million, $4.2 million and $4.0 million for the years ended December 31, 2017, 2016 and 2015, respectively.

25.    Segment Information

We operate as one operating segment, focused on discovering, developing and delivering worldwide innovative 

therapies for people living with serious neurological and neurodegenerative diseases. Our Chief Executive Officer 
(CEO), as the chief operating decision-maker, manages and allocates resources to the operations of our company on 
a total company basis. Our research and development organization is responsible for the research and discovery of 
new product candidates and supports development and registration efforts for potential future products. Our 
pharmaceutical, operations and technology organization manages the development of the manufacturing processes, 
clinical trial supply, commercial product supply, distribution, buildings and facilities. Our commercial organization is 
responsible for U.S. and international development of our commercial products. The company is also supported by 
corporate staff functions. Managing and allocating resources on a total company basis enables our CEO to assess 
the overall level of resources available and how to best deploy these resources across functions, therapeutic areas 
and research and development projects that are in line with our long-term company-wide strategic goals. Consistent 
with this decision-making process, our CEO uses consolidated, single-segment financial information for purposes of 
evaluating performance, forecasting future period financial results, allocating resources and setting incentive targets.

Enterprise-wide disclosures about product revenues, other revenues and long-lived assets by geographic area 

and information relating to major customers are presented below. Revenues are primarily attributed to individual 
countries based on location of the customer or licensee.

F- 72

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Revenues by product are summarized as follows:

United
States

2017

Rest of
World

Total

United
States

2016

Rest of
World

Total

United
States

2015

Rest of
World

Total

For the Years Ended December 31,

(In millions)

Multiple Sclerosis (MS):

TECFIDERA................. $ 3,294.0 $

920.0 $ 4,214.0 $ 3,169.4 $

798.7 $ 3,968.1 $ 2,908.2 $

730.2 $ 3,638.4

AVONEX .....................

1,593.6

PLEGRIDY ..................

295.5

TYSABRI ....................

1,113.8

FAMPYRA ...................

ZINBRYTA...................

—

—

557.9

198.8

859.3

91.6

52.7

2,151.5

1,675.3

494.3

305.0

1,973.1

1,182.9

91.6

52.7

—

—

638.2

176.7

780.9

84.9

7.8

Spinal Muscular
Atrophy:

2,313.5

1,790.2

481.7

227.1

1,963.8

1,103.1

84.9

7.8

SPINRAZA ..................

657.0

226.7

883.7

4.6

—

4.6

Hemophilia:

ELOCTATE ..................

ALPROLIX ...................

Other product revenues:

FUMADERM................

BENEPALI...................

FLIXABI ......................

42.2

21.0

—

—

—

6.2

5.0

39.6

370.8

9.0

48.4

26.0

39.6

370.8

9.0

445.2

268.0

—

—

—

68.0

65.7

45.9

100.6

0.1

513.2

333.7

45.9

100.6

0.1

840.0

111.4

783.0

89.7

—

2,630.2

338.5

1,886.1

89.7

—

—

—

11.4

25.6

51.4

—

—

319.7

234.5

51.4

—
—

—

—

—

308.3

208.9

—

—

—

Total product
revenues ................. $ 7,017.1 $ 3,337.6 $10,354.7 $ 7,050.4 $ 2,767.5 $ 9,817.9 $ 6,545.8 $ 2,642.7 $ 9,188.5

Geographic Information

The following tables contain certain financial information by geographic area:

December 31, 2017 (In millions)
Product revenues from external customers.......... $ 7,017.1 $ 2,844.8 $
Revenues from anti-CD20 therapeutic programs .. $ 1,475.6 $
0.6 $
Other revenues from external customers............. $
67.8 $
249.5 $
Long-lived assets .............................................. $ 1,226.9 $ 1,948.2 $

Europe

U.S.

December 31, 2016 (In millions)
Product revenues from external customers.......... $ 7,050.4 $ 2,237.2 $
Revenues from anti-CD20 therapeutic programs .. $ 1,249.5 $
1.9 $
Other revenues from external customers............. $
71.5 $
224.7 $
Long-lived assets .............................................. $ 1,272.3 $ 1,221.1 $

Europe

U.S.

December 31, 2015 (In millions)
Product revenues from external customers.......... $ 6,545.8 $ 2,165.7 $
Revenues from anti-CD20 therapeutic programs .. $ 1,269.8 $
3.5 $
Other revenues from external customers............. $
31.2 $
142.0 $
Long-lived assets .............................................. $ 1,296.5 $
881.7 $

Europe

U.S.

Asia
160.1 $
— $
42.7 $
5.2 $

Other

Total

332.7 $10,354.7
83.0 $ 1,559.2
360.0
2.1 $ 3,182.4

— $

Asia
217.3 $
— $
20.2 $
7.0 $

Other

Total

313.0 $ 9,817.9
63.1 $ 1,314.5
316.4
1.4 $ 2,501.8

— $

Asia
143.7 $
— $
62.9 $
7.7 $

Other

Total

333.3 $ 9,188.5
65.9 $ 1,339.2
236.1
1.7 $ 2,187.6

— $

Revenues from Anti-CD20 Therapeutic Programs

Approximately 13%, 11% and 12% of our total revenues in 2017, 2016 and 2015, respectively, are derived from 

our collaboration agreement with Genentech. For additional information on our collaboration with Genentech, please 
read Note 20, Collaborative and Other Relationships, to these consolidated financial statements.

F- 73

 
 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Significant Customers

We recorded revenues from two wholesalers accounting for 34% and 21% of gross product revenues in 2017, 

35% and 22% of gross product revenues in 2016, and 34% and 26% of gross product revenues in 2015, 
respectively.

Other

As of December 31, 2017, 2016 and 2015, approximately $1,215.7 million, $545.5 million and $161.5 

million, respectively, of our long-lived assets were related to the construction of our large-scale biologics 
manufacturing facility in Solothurn, Switzerland.

As of December 31, 2017, 2016 and 2015, approximately $707.1 million, $643.6 million and $684.9 million, 

respectively, of our long-lived assets were related to our manufacturing facilities in Denmark.

For additional information on our large-scale biologics manufacturing facility in Solothurn, Switzerland, please 

read Note 11, Property, Plant and Equipment, to these consolidated financial statements.

26.    Quarterly Financial Data (Unaudited)

(In millions, except per share amounts)
2017
Product revenues, net.............................. $
Revenues from anti-CD20 therapeutic
programs ................................................ $
Other revenues ....................................... $
Total revenues ........................................ $
Gross profit (1) ....................................... $
Net income ............................................. $
Net income attributable to Biogen Inc. ...... $
Net income per share:

Basic earnings per share attributable to
Biogen Inc. ........................................... $
Diluted earnings per share attributable
to Biogen Inc. ....................................... $

Weighted-average shares used in
calculating:

Basic earnings per share attributable to
Biogen Inc. ...........................................
Diluted earnings per share attributable
to Biogen Inc. .......................................

First
Quarter

Second
Quarter

Third
Quarter

Fourth
Quarter

Total
Year

(a)
2,380.1 $

(a) (b) (c) (d)

(a)

(a) (e) (f) (g) (h)

2,639.7 $ 2,622.5 $

2,712.4 $ 10,354.7

340.6 $
90.0 $
2,810.7 $
2,426.1 $
747.5 $
747.6 $

397.1 $
41.6 $

406.5 $
48.8 $
3,078.4 $ 3,077.8 $
2,712.2 $ 2,707.8 $
862.8 $ 1,226.1 $
862.8 $ 1,226.1 $

415.0 $
179.6 $

1,559.2
360.0
3,307.0 $ 12,273.9
2,797.8 $ 10,643.9
2,670.1
2,539.1

(166.3) $
(297.4) $

3.47 $

4.07 $

5.80 $

(1.41) $

11.94

3.46 $

4.07 $

5.79 $

(1.40) $

11.92

215.6

215.9

211.9

211.4

212.2

211.8

211.5

212.0

212.6

213.0

F- 74

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

(In millions, except per share amounts)
2016
Product revenues, net.............................. $
Revenues from anti-CD20 therapeutic
programs ................................................ $
Other revenues ....................................... $
Total revenues ........................................ $
Gross profit (1) ....................................... $
Net income ............................................. $
Net income attributable to Biogen Inc. ...... $
Net income per share:

Basic earnings per share attributable to
Biogen Inc. ........................................... $
Diluted earnings per share attributable
to Biogen Inc. ....................................... $

Weighted-average shares used in
calculating:

Basic earnings per share attributable to
Biogen Inc. ...........................................
Diluted earnings per share attributable
to Biogen Inc. .......................................

First
Quarter

Second
Quarter

(i)

Third
Quarter

(i) (j)

2,309.4 $

2,466.0 $ 2,539.6 $

Fourth
Quarter

Total
Year

(i) (k) (l)
2,502.9 $

9,817.9

329.5 $
87.9 $
2,726.8 $
2,413.8 $
969.2 $
970.9 $

349.2 $
79.0 $

317.6 $
98.6 $
2,894.2 $ 2,955.8 $
2,523.9 $ 2,538.9 $
1,048.4 $ 1,030.2 $
1,049.8 $ 1,032.9 $

318.2 $
50.9 $

1,314.5
316.4
2,872.0 $ 11,448.8
9,970.1
2,493.5 $
3,695.7
647.9 $
3,702.8
649.2 $

4.44 $

4.79 $

4.72 $

3.00 $

16.96

4.43 $

4.79 $

4.71 $

2.99 $

16.93

218.9

219.3

219.1

218.9

219.4

219.4

216.6

217.0

218.4

218.8

(1) Gross profit is calculated as total revenues less cost of sales, excluding amortization of acquired intangible assets.

(a)  Net income and net income attributable to Biogen Inc. for the first, second, third and fourth quarters of 2017 

include a pre-tax charge of $353.6 million, $29.4 million, $30.4 million and $30.8 million, respectively, related 
to our U.S. and rest of world licenses to Forward Pharma's intellectual property, including Forward Pharma's 
intellectual property related to TECFIDERA.

(b)  Net income and net income attributable to Biogen Inc. for the second quarter of 2017 includes a pre-tax charge 
to research and development expense of $300.0 million for an upfront payment to BMS upon the closing of our 
agreement to exclusively license BIIB092.

(c)  Net income and net income attributable to Biogen Inc. for the second quarter of 2017 includes a pre-tax charge 
to acquired in-process research and development of $120.0 million for an upfront payment to Remedy upon 
closing of the asset purchase transaction.

(d)  Net income and net income attributable to Biogen Inc. for the second quarter of 2017 includes a pre-tax charge 

to research and development expense of $60.0 million for a developmental milestone that became payable to 
the former shareholders of iPierian upon dosing of the first patient in the Phase 2 PSP study for BIIB092.

(e)  Net income attributable to Biogen Inc., for the fourth quarter of 2017, includes a pre-tax charge to 

noncontrolling interest of $150.0 million for a payment to Neurimmune in exchange for a 15% reduction in 
royalty rates payable on potential commercial sales of aducanumab. 

(f)  Net income and net income attributable to Biogen Inc. for the fourth quarter of 2017 includes pre-tax charges 

to research and development expense of $28.0 million and $50.0 million for an upfront payment and a 
continuation payment, respectively, to Alkermes.

(g)  Net income and net income attributable to Biogen Inc. for the fourth quarter of 2017 includes a pre-tax charge 

to research and development expense of $25.0 million for an upfront payment to Ionis upon entering into a new 
collaboration agreement to identify new antisense-oligonucleotide drug candidates for the treatment of SMA.

(h)  Net income and net income attributable to Biogen Inc. for the fourth quarter of 2017 includes $1,173.6 million 
related to the provisions of the 2017 Tax Act, including a $989.6 million expense under the Transition Toll Tax.

F- 75

 
BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

(i)  Net income and net income attributable to Biogen Inc. for the second, third and fourth quarters of 2016 
includes additional pre-tax depreciation expense totaling $15.8 million, $15.7 million and $14.0 million, 
respectively, as part of our decision to cease manufacturing and vacate our small-scale biologics manufacturing 
facility in Cambridge, MA as well as close and vacate our warehouse space in Somerville, MA. 

(j)  Net income and net income attributable to Biogen Inc. for the third quarter of 2016 includes a pre-tax charge to 

research and development expense of $75.0 million for a license fee paid to Ionis as we exercised our option 
to develop and commercialize SPINRAZA.

(k)  Net income and net income attributable to Biogen Inc. for the fourth quarter of 2016 includes a pre-tax charge 
to research and development expense of $50.0 million for a milestone payment due to Eisai related to the 
initiation of a Phase 3 trial for E2609.

(l)  Net income and net income attributable to Biogen Inc. for the fourth quarter of 2016 includes a pre-tax charge 

of $454.8 million related to our January 2017 settlement and license agreement with Forward Pharma.

27.    Subsequent Events

Karyopharm Therapeutics Inc. 

In January 2018 we acquired the exclusive worldwide rights to develop and commercialize Karyopharm 
Therapeutics Inc.'s (Karyopharm) investigational oral compound BIIB100 (formerly known as KPT-350) for the 
treatment of certain neurological and neurodegenerative conditions, primarily in ALS. We will pay Karyopharm an 
upfront payment of $10.0 million and we may pay Karyopharm up to $207.0 million in additional milestone 
payments, and potential royalties.

F- 76

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of Biogen Inc.

Opinions on the Financial Statements and Internal Control over Financial Reporting

We have audited the accompanying consolidated balance sheets of Biogen Inc. and its subsidiaries (the "Company") 
as of December 31, 2017 and 2016, and the related consolidated statements of income, comprehensive income, 
equity and cash flows for each of the three years in the period ended December 31, 2017, including the related 
notes (collectively referred to as the “consolidated financial statements”). We also have audited the Company's 
internal control over financial reporting as of December 31, 2017, based on criteria established in Internal Control - 
Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission 
(COSO).

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the 
financial position of the Company as of December 31, 2017 and 2016, and the results of its operations and its cash 
flows for each of the three years in the period ended December 31, 2017 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, 2017, based on criteria established 
in Internal Control - Integrated Framework (2013) issued by the COSO.

Basis for Opinions

The Company's management is responsible for these consolidated 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 Annual Report on Internal Control over Financial Reporting appearing under 
Item 9A. Our responsibility is to express opinions on the Company’s consolidated financial statements and on the 
Company's internal control over financial reporting based on our audits. We are a public accounting firm registered 
with the Public Company Accounting Oversight Board (United States) ("PCAOB") and are required to be independent 
with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and 
regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and 
perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of 
material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting 
was maintained in all material respects.  

Our audits of the consolidated financial statements included performing procedures to assess the risks of material 
misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures 
that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts 
and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting 
principles used and significant estimates made by management, as well as evaluating the overall presentation of the 
consolidated financial statements. 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.

Definition and Limitations of Internal Control over Financial Reporting

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 

F- 77

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.

/s/PricewaterhouseCoopers LLP
Boston, Massachusetts
February 1, 2018 

We have served as the Company's auditor since 2003.

F- 78

CORPORATE INFORMATION

_______
Board of Directors

Stelios Papadopoulos, Ph.D. 
Chairman, Biogen,
Chairman, Exelixis, Inc. and
Chairman, Regulus Therapeutics, Inc.

Caroline D. Dorsa 
Retired Executive Vice President and 
Chief Financial Officer, Public Service 
Enterprise Group Incorporated 

Michel Vounatsos 
Chief Executive Officer, Biogen Inc. 

Alexander J. Denner, Ph.D. 
Founding Partner, Sarissa Capital 

Nancy L. Leaming 
Retired Chief Executive Officer and 
President, Tufts Health Plan 

Transfer Agent 
To keep your contact information 
current and for shareholder questions 
regarding lost stock certificates, 
address changes and changes of 
ownership or names in which the 
shares are held, direct inquiries to: 

Computershare Trust 
Company NA 
250 Royall Street 
Canton, MA 02021 
Phone: (781) 575-2879
computershare.com 

Shareholder Information
Corporate Headquarters 
Biogen Inc. 
225 Binney Street 
Cambridge, MA 02142 
Phone: (617) 679-2000

SEC Form 10-K 
A copy of Biogen’s Annual Report on 
Form 10-K filed with the Securities 
and Exchange Commission is available 
at sec.gov and upon request to: 

Investor Relations Department 
Biogen Inc. 
225 Binney Street 
Cambridge, MA 02142 
Phone: (781) 464-2442

Common Stock Price

Richard C. Mulligan, Ph.D. 
Mallinckrodt Professor
of Genetics, Emeritus, Harvard
Medical School and Portfolio Manager, 
Icahn Capital LP

Robert W. Pangia 
Partner, Ivy Capital Partners, LLC 

Brian S. Posner 
Private Investor and President, Point 
Rider Group LLC

Eric K. Rowinsky, M.D. 
President and Executive Chairman, 
RGenix, Inc. 

Lynn Schenk, J.D. 
Attorney, Former Chief of Staff to the 
Governor of California and Former U.S. 
Congresswoman 

Stephen A. Sherwin, M.D. 
Clinical Professor of Medicine, 
University of California, San Francisco 
and Advisor to Life Sciences 
Companies

Independent Account 
PricewaterhouseCoopers LLP 
101 Seaport Boulevard 
Boston, MA 02210 

Market Information 
Our common stock trades on the 
Nasdaq Global Select Market under 
the symbol “BIIB”.

News Releases 
As a service to our shareholders and 
prospective investors, Biogen’s news 
releases are usually posted within one 
hour of being issued and are available 
at no cost at biogen.com. 

The table below shows the high and 
low sales price for our common stock 
as reported by the Nasdaq Global 
Select Market for each quarter in the 
years ended December 31, 2017 and 
2016.

2017

HIGH 

LOW

Q1* 

$298.00 

$254.15

Q2 

Q3 

Q4 

$291.90 

$244.28

$330.00 

$269.50

$348.84 

$301.81

2016

HIGH 

LOW

$301.02 

$242.07

$292.69 

$223.02

$333.65 

$240.07

$329.83 

$268.00

Q1 

Q2 

Q3 

Q4 

*The sales prices for the first quarter of 2017 in the table above has been adjusted for the impact of the spin-off of our hemophilia business as an independent, publicly traded company. 

 
       
       
YEARS