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Biogen

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FY2015 Annual Report · Biogen
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Building the Next Biogen.

2 0 1 5   A N N U A L   R E P O R T

C O R P O R AT E   I N F O R M AT I O N

B O A R D   O F   D I R E C T O R S

Stelios Papadopoulos, Ph.D.
Chairman, Biogen
Chairman, Exelixis, Inc. and 
Regulus Therapeutics, Inc.

George A. Scangos, Ph.D.
Chief Executive Offi cer, Biogen

Alexander J. Denner, Ph.D.
Sarissa Capital, Founding Partner

Caroline D. Dorsa
Retired Executive Vice President and
Chief Financial Offi cer, Public Service
Enterprise Group, Inc.

Nancy L. Leaming
Retired Chief Executive Offi cer and President, 
Tufts Health Plan

Richard C. Mulligan, Ph.D.
Sarissa Capital, Founding Partner, and 
Mallinckrodt Professor of Genetics, Emeritus, 
Harvard Medical School

Robert W. Pangia
Chief Executive Offi cer,
Ivy Sports Medicine, LLC

Brian S. Posner
President, Point Rider Group LLC 
Private Investor

Eric K. Rowinsky, M.D.
Former Head of R&D and Chief Medical Offi cer,
Stemline Therapeutics, Inc. and 
life sciences consultant

The Honorable Lynn Schenk
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

S H A R E H O L D E R   I N F O R M AT I O N

C O M M O N   S T O C K   P R I C E

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

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

INDEPENDENT ACCOUNTANTS
PricewaterhouseCoopers LLP
101 Seaport Boulevard
Boston, MA 02210

NEWS RELEASES
As a service to our shareholders
and prospective investors, copies 
of Biogen news releases issued 
in the last 12 months are now 
available almost immediately 
24 hours a day, seven days a 
week, on the Web at businesswire.
com. Biogen’s news releases are 
usually posted within one hour of 
being issued and are available at 
no cost at biogen.com.

MARKET 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, 2015 and 2014.

2
0
1
5

2
0
1
4

Q1

Q2

Q3

Q4

Q1

Q2

Q3

Q4

HIGH

LOW

$480.18

$334.40

$432.88

$368.88

$412.24

$265.00

$311.65

$254.00

$358.89

$270.62

$322.25

$272.02

$349.00

$298.31

$361.93

$290.85

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A TRANSFORMATIVE AGE
FOR NEUROLOGY RESEARCH
This picture shows patient-derived motor neuron cultures used to 
model disease as part of our Amyotrophic Lateral Sclerosis (ALS or 
Lou Gehrig’s Disease) drug discovery efforts. Biogen scientists have 
been using these cells to develop biomarkers for clinical trials and to 
investigate the underlying causes of ALS.

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02

B U I L D I N G  T H E  N E X T  B I O G E N

F I N A N C I A L  H I G H L I G H T S

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RE VENUES
$ in millions

NON-GAAP
DILU TED EPS*

FREE CASH FLOW*
$ in millions

* Non-GAAP diluted Earnings Per Share (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 and 19 of this annual report.

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B I O G E N  2 0 1 5  A N N U A L  R E P O R T

03

GEORG E  A. S C A N G O S,  P H.D.
Chief Executive Officer

D E A R  F E L L O W  S H A R E H O L D E R S ,

At Biogen, we aspire to have the greatest impact on  
patients of any biotechnology company in the history  
of our industry.

To us, that means bringing new 
scientifi c understanding to diseases 
for which there are no or inadequate 
treatments, and creating novel 
medicines that benefi t individuals 
affl icted with those diseases.

In 2015, we made great progress 
toward that goal as we accelerated 
development of several potentially 
transformative therapies, and refocused 
our organization on programs where 
we believe we can truly have an impact. 
We expanded the capabilities of our  
research and development organization 
by investing in breakthrough science, 
new technologies and platforms, and by 
bolstering our organization with some of 

the world’s leading research scientists 
in the fi elds of neurology, gene therapy 
and neuroimmunology – pushing 
toward real treatments for previously 
intractable neurological conditions.

During the past year, we also redoubled 
our commercial efforts, expanded our 
global leadership in multiple sclerosis 
(MS), and saw more hemophilia 
patients switching to our therapies 
than any other. 

Biogen revenues grew to $10.8 billion, 
representing an 11% increase over 
2014, and we generated non-GAAP 
earnings per share of $17.01, a 23% 
increase over 2014.

$10.8B

In Revenue

+23%

Increase in non-GAAP
earnings per share 
over 2014

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04

B U I L D I N G   T H E   N E X T   B I O G E N

Today, we have a healthy and growing commercial 
business and a deep and high-quality R&D pipeline. 
As we look to build the next Biogen, we believe we have 
set the course for a new phase of growth with a focus 
on next-generation treatments for MS and Alzheimer’s 
disease, as well as for additional neurodegenerative 
and neurodevelopmental diseases. We are tackling 
these diseases using cutting-edge neuroscience, 
and a variety of therapeutic approaches that include 
RNA-based drugs, gene therapy and gene editing.

The past fi ve years were some of the most productive 
in our history, as we launched fi ve new medicines. In 
2016, we anticipate the introduction of three additional 
therapies to our portfolio, including ZINBRYTA for 
MS, and BENEPALI and FLIXABI, anti-TNF biosimilar 
treatments developed through our joint venture 
Samsung Bioepis. 

We believe that our mid- to late-stage pipeline 
holds incredible promise. We now have numerous 
studies underway focused on areas where we have 
the potential to make a real impact for not just 
thousands but potentially millions of patients – 
slowing the progress of Alzheimer’s disease and 

spinal muscular atrophy, and potentially repairing the 
damage caused by multiple sclerosis. 

As we enter what we anticipate will be a transformative 
era in drug discovery and development, our commitment 
to groundbreaking research is expected to yield 
important results for patients. Our approach has 
risk, but our scientifi c expertise enables us to manage 
that risk through a better understanding of disease 
biology, a focus on genetically-validated targets, and the 
use of biomarkers and advanced imaging to evaluate 
whether compounds are having the desired biological 
effects. Combined, we believe these techniques 
signifi cantly increase the possibility of success and 
potential returns for those who have invested in us. 

We are building upon our unique expertise from 
two decades in MS to expand into new areas of 
neurodegeneration – Alzheimer’s disease, Parkinson’s 
disease and Amyotrophic Lateral Sclerosis (ALS).  
In the next few years, we hope to see therapies 
emerge for many of these conditions previously 
thought impossible to treat – continuing our 
ongoing commitment to solving some of the 
most challenging diseases in medicine.

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B I O G E N   2 0 1 5   A N N U A L   R E P O R T

05

Today, more than one in every three 
MS patients is treated with a Biogen 
product, a testament to our 20-year 
heritage in the market and the breadth 
of treatment options that we offer.

A   H E A LT H Y   A N D   E X P A N D I N G 
C O M M E R C I A L   P O R T F O L I O

By nearly all measures, our commercial 
performance over the past fi ve years has been 
impressive. Revenue has grown at a compounded 
rate of 21 percent over this period, and our non-GAAP 
diluted earnings per share – at a compounded rate 
of 30 percent – have outpaced revenue. This success 
has been driven by our industry-leading portfolio 
of MS products, which saw continued overall 
growth in 2015 with the introduction of TECFIDERA 
and PLEGRIDY in new markets around the world, 
and a sustained increase in prescribing as more 
doctors integrate these therapies into their practice. 

Today, more than one in every three MS patients is 
treated with a Biogen product, a testament to our 
20-year heritage in the market and the breadth of 
treatment options we offer. 

In 2015, TECFIDERA’s revenue growth moderated 
due to a variety of factors. Yet with continued stable 
growth in the U.S., combined with adoption by 
patients in Europe, we expect to see TECFIDERA 
continuing to drive our global leadership in MS. 
TECFIDERA now is not only the most prescribed 
oral MS therapy worldwide; it is also the most 
prescribed of all MS therapies in Germany, France 
and the U.K. Overall, more than 170,000 patients 
have been treated with the therapy. 

We are pleased with our continued leadership in 
the interferon space, which remains the therapy 
of choice of many patients with MS. PLEGRIDY 
has seen continued uptake with patients, who 
benefi t from the effi cacy and tolerability of an 
interferon with the convenience of once every two 
weeks dosing. Combined, AVONEX and PLEGRIDY 
contributed $3.0 billion in worldwide revenue. 

TYSABRI generated revenue of $1.9 billion, as 
it remained the leading option for patients who 
require high-effi cacy treatment. Nearly 10 years 
after approval, physicians continue to prescribe 
TYSABRI and we believe it is positioned well in 
an increasingly competitive market.

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06

B U I L D I N G  T H E  N E X T  B I O G E N

P A T I E N T

PHILIP  W.

Multiple Sclerosis

A diehard baseball fan, Capt. Philip W. tries to 
never miss seeing his hometown Cardinals play. 
It is a passion he shares with his son, Dennis, 
who frequently accompanies him to games.

As an Air Force offi    cer, he fi rst a(cid:3)  ributed his MS 
symptoms to jet lag following a long trip. When 
diagnosed six months later, he decided to focus 
on life on the ground, teaching aeronautics at a 
local high school.

His positive a(cid:3)  itude and determination have 
helped him overcome everyday challenges – 
and he lives by a mantra of “modifi cation and 
moderation,” as he helps others as a volunteer 
at his local National Multiple Sclerosis Society 
chapter, and his Omega Psi Phi fraternity center.

This story refl ects the personal experiences of one 
person, and is not intended to imply any therapeutic 
benefi t, results or experiences with Biogen products.

In 2016, we expect to add to our growing MS  
portfolio. This includes the potential approval by  
regulatory authorities in the U.S. and EU of ZINBRYTA, 
our MS compound that we will market with AbbVie. 
We believe ZINBRYTA will be an important new  
option for relapsing MS patients looking to switch 
to a higher-effi cacy therapy.  

In the U.S., ELOCTATE and ALPROLIX have 
become the leading switch-to products in  
hemophilia A and B, respectively, less than 
18 months since launch. These products have 
generated more than a half-billion dollars of  
revenue in their first full year on the market  
in the U.S. In November 2015, the European 
Commission approved ELOCTA (the name
for ELOCTATE in Europe) for the treatment  
of hemophilia A in Europe. We believe this  
approval will help contribute to growth in  
our hemophilia treatments this year as our  
collaboration partner, Swedish Orphan Biovitrum 
AB (publ) (SOBI) commercializes ELOCTA in 
additional markets. 

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B I O G E N   2 0 1 5   A N N U A L   R E P O R T

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Beyond our core portfolio, sales of RITUXAN and 
GAZYVA, anti-CD20 products marketed under our 
collaboration agreement with Genentech, a Roche 
Group company, were $1.3 billion. These compounds 
remain important treatment options for patients 
with a variety of cancers, and GAZYVA already 
has added an additional indication this year. 

These products are expected to increase patient 
access to high-quality and lower-cost medicines.  
With the introduction of these therapies, we feel 
we are well positioned to lead in the emerging 
biosimilars landscape, building on our expertise 
and heritage in protein engineering and 
biologics manufacturing.

This year we are also taking signifi cant steps to 
enter the biosimilars market. After several years 
in development by Samsung Bioepis, our joint 
venture with Samsung Biologics, we expect 
to be the fi rst company to market biosimilars 
for all three anti-TNF antibodies to patients in 
Europe – and with the recent approval of 
BENEPALI and anticipated approval of FLIXABI, 
biosimilar versions of Enbrel® (etanercept) and 
Remicade® (infl iximab), we are well on our way. 
We also are pursuing a biosimilar version 
of Humira® (adalimumab), an important 
anti-infl ammatory agent used in a range of 
indications including rheumatoid arthritis 
and Crohn’s disease.  

As we look ahead, with the anticipated growth 
from both our research pipeline and commercial 
products, we are now working to increase our 
manufacturing capacity over the next few years. 
We announced last year our intention to build 
a new, state-of-the-art manufacturing facility in 
Solothurn, Switzerland, and we broke ground on 
the site in January 2016. As the demand for 
biologics expands and our pipeline assets 
mature, we believe this investment will help 
to secure our ability to provide medicines 
to patients wherever and whenever they 
need them.

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08

B U I L D I N G   T H E   N E X T   B I O G E N

T H E   M O S T   R O B U S T 
P I P E L I N E   I N   O U R   H I S T O R Y

This past year was a remarkable one for Biogen’s 
R&D organization. We advanced the next wave of 
potential medicines through our pipeline, added 
important assets through business development, 
and bolstered efforts with innovative industry 
and academic partnerships and consortia. We 
believe that our pipeline and our organization 
are stronger than they have ever been, and our 
neurology research is as advanced as any in 
industry or academia.  

In 2015, we reported positive results in our 
Phase 1b studies of aducanumab, our leading 
experimental treatment for Alzheimer’s disease. 
These results gave us the confi dence to advance 
aducanumab into Phase 3 trials. In 2016, we 
are focused on enrolling patients into our global 
Phase 3 clinical trials and to determine, as 
quickly as possible, if aducanumab will be a safe 
and effective treatment in the battle against 
Alzheimer’s disease.

In addition to aducanumab, we have two 
product candidates for Alzheimer’s disease 
in development with our collaboration partner 
Eisai, BAN2401 and E2609, both of which we 
expect will have data later this year. As with 
aducanumab, these compounds target amyloid 
plaques in the brain, which are believed to 
play an important role in the development of 
Alzheimer’s disease. 

We view Alzheimer’s disease as an area where 
we can make a tremendous difference in the 
lives of patients. Today there are very limited 
treatment options to slow or stop the cognitive 
decline that is the hallmark of Alzheimer’s 
disease. The number of affected people in the 
U.S. alone is expected to grow to an estimated 
13.5 million by 2050. Though many companies 
before us have invested heavily in this area 
only to come up short, we feel the science has 
advanced to such a degree in recent years so 
as to give us a clearer picture of the biologic 
underpinnings of the disease and possibly, 
more effective targets for intervention.

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B I O G E N   2 0 1 5   A N N U A L   R E P O R T

09

 » Finally, we in-licensed amiselimod from 

Mitsubishi Tanabe Pharma Corporation. This 
experimental therapy has potential in multiple 
autoimmune indications. We intend to move 
amiselimod into Phase 3 trials for ulcerative 
colitis and Crohn’s disease in the second half 
of 2016. More than 500,000 people suffer 
from each of these diseases, yet there remains 
a signifi cant need for safe, effective oral agents, 
particularly for patients who have had an 
inadequate response to existing treatments. 
We believe amiselimod has the potential 
to be a best-in-class molecule through the 
mechanism of action and safety profi le we 
have seen in the early trials.

We believe that our pipeline and our 
organization are stronger than they 
have ever been, and our neurology 
research is as advanced as any in 
industry or academia.

We are also encouraged by several other 
mid- to late-stage assets in our pipeline – each 
of which holds great promise for patients and 
our company:

 » In the MS space, we have two programs 

designed to repair the demyelinated lesions 
in the brains of patients, with the goal of 
helping repair lost function by restoring the 
protective myelin that is critical for nerve cell 
function and that is damaged by MS. The most 
advanced of these is anti-LINGO-1 and we 
plan to share Phase 2 data on that program 
in 2016. The second remyelinating agent – 
called BIIB061 – is a small molecule antibody 
with an entirely different mechanism and 
target than anti-LINGO-1. We are moving 
this compound into Phase 2. 

 » With our collaboration partner Ionis 
Pharmaceuticals, we are developing 
nusinersen for the treatment of spinal 
muscular atrophy, the leading genetic cause 
of death in infants. We believe data from the 
open-label Phase 2 trials are encouraging 
and Phase 3 trials are underway. We hope 
to bring nusinersen to market as quickly as 
possible, as currently there is no treatment 
for this devastating disease.

 » In the area of neuropathic pain, we are developing 
Raxatrigine, an oral small molecule that aims to 
block a key receptor in the modulation of pain. 
We plan to initiate a Phase 3 study in a chronic 
pain condition called trigeminal neuralgia. We 
also expect to begin a Phase 2b study in sciatica, 
which affects approximately 5.5 million people in 
the U.S., EU and Japan.

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I N N O VAT I V E  C O L L A B O R AT I O N S
L E A D I N G  T O  R E A L  O U T C O M E S

We have further strengthened our R&D engine  
through academic and industry collaborations and 
research consortia. Each of these relationships  
is intended to increase our understanding of the 
underlying biology of disease, improve our ability to 
identify and test novel drug targets, and minimize 
risk in drug development. We established several 
important collaborations in 2015, primarily in the 
area of genetics and gene therapy, as we believe 
this will be a signifi cant area for treating complex 
diseases in the future.

 » To advance the understanding of ALS, we joined 
forces with the ALS Association and Columbia 
University Medical Center. This initiative will 
involve a combination of next-generation 
genetic sequencing and detailed clinical 
phenotyping in 1,500 people with the disease.

 » We formed a strategic alliance this year with the 
Parkinson’s Institute and Clinical Center in order 

10

B U I L D I N G  T H E  N E X T  B I O G E N

P A T I E N T

AL E X  N.

Hemophilia

As a child growing up in Colombia, Alex  
would climb trees, race  bikes and play 
soccer – against the objections of his  
mother, who saw him continually land  
in the hospital due to  his hemophilia.

Alex had a long family history of the disease, 
and his grandfather and cousins were great 
resources in helping understand his disorder – 
teaching him the importance of living without a 
constant fear of bleeds. This was reinforced by 
his father, who bought him his fi rst motorcycle.

Riding his motorcycle has become an  
important part of his life as he spends weekends 
with friends. And he still loves soccer –  
coaching his kids on a local youth team.

This story refl ects the personal experiences of one 
person, and is not intended to imply any therapeutic 
benefi t, results or experiences with Biogen products.

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B I O G E N   2 0 1 5   A N N U A L   R E P O R T

11

We have further strengthened our R&D 
engine through academic and industry 
collaborations and research consortia. 
Each of these relationships is intended 
to increase our understanding of the 
underlying biology of disease, improve 
our ability to identify and test novel 
drug targets, and minimize risk in 
drug development.

to study the underlying biology of the disease. 
The goal of this alliance is to create novel tools 
to help with drug discovery and development and 
focus on fi nding genes that might serve as novel 
therapeutic targets.

 » We entered into an agreement with Applied 

Genetic Technologies Corporation (AGTC) to develop 
a portfolio of the company’s therapeutic programs, 
including both a clinical stage candidate and a pre-
clinical candidate for orphan diseases of the retina.

And this approach is working. 

Together with researchers at Columbia University 
and HudsonAlpha Institute for Biotechnology, our 
translational sciences team identifi ed a new gene 
associated with ALS out of a large-scale sequencing 
study that began in 2012. The discovery, which was 
published in the journal, Science, was the result of 
efforts from more than two dozen laboratories in six 
countries and highlights the ability of these types 
of collaborations to fi nd new disease pathways and 
accelerate the pace of discovery.

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12

B U I L D I N G   T H E   N E X T   B I O G E N

This past year, we announced that as of 
2014 we achieved carbon neutrality, 
the result of a multi-year initiative to 
reduce our energy and emissions, drive 
effi ciencies and invest in environmental 
projects that offset the remaining 
carbon associated with our business.

A   C O M M I T M E N T   T O   C I T I Z E N S H I P
A N D   S U S TA I N A B I L I T Y,   G L O B A L LY

At Biogen, we remain deeply focused on ensuring 
that our expertise, reach and commitment to a 
sustainable future extends beyond the communities 
we serve and has a broader societal impact. We do 
this by working to improve science education, provide 
humanitarian relief, minimize our carbon footprint – 
and by encouraging all of our employees to actively 
participate in shaping and implementing the ideas 
that will advance our corporate citizenship goals. 

In 2015, we dramatically increased reliable access 
to hemophilia factor for patients in developing 
nations. Through the culmination of three years of 
collaborative effort with SOBI and the World Federation 
of Hemophilia (WFH), we produced and distributed 
25 million international units of hemophilia therapy 
to 15 countries in the developing world, predominantly 
in Africa, Asia and parts of South America. This 
year, we expect to add 20 more countries as 
part of our commitment to produce and donate 
1 billion international units of hemophilia therapy over 

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B I O G E N  2 0 1 5  A N N U A L  R E P O R T

13

P A T I E N T

PA MEL A  M.

Multiple Sclerosis

Inspired by her mother, who endured 
a traumatic brain injury, Pamela was  
always interested in healthcare. A degree 
in biology pointed her toward medicine, 
but she initially ended up in finance.

Her MS diagnosis at age 30 was a wake-up 
call – and it was then that she focused on her 
real passion, becoming a registered nurse.

She now puts greater focus on her own health, 
participating in MS 150 bike rides and running 
several times a week. Pamela’s  strength 
inspires those around her, especially her wife, 
Laura, and together with their dog, they enjoy 
traveling and indulging in regional cuisines.

This story refl ects the personal experiences of one 
person, and is not intended to imply any therapeutic 
benefi t, results or experiences with Biogen products.

10 years. We are proud to have provided the largest 
single donation of hemophilia factor ever, which has 
served as a catalyst for the expansion of the WFH’s 
long-standing Humanitarian Aid Program.

In addition to our impact on the health of patients, we are 
committed to reducing our impact on the environment. 
This past year, we announced that as of 2014 we achieved 
carbon neutrality, the result of a multi-year initiative to 
reduce our energy and emissions, drive effi ciencies and 
invest in environmental projects that offset the remaining 
carbon associated with our business. Our growth as a 
more sustainable company received important external 
recognition, including continued industry leadership on 
the prestigious Dow Jones Sustainability World Index, 
and fi rst place on Newsweek’s 2015 Green Rankings.

As we shape the future of our organization,  we 
draw strength from a diverse workforce and constantly 
strive to nurture a culture of both innovation and 
inclusion. We were honored to be named to Science’s 
list of Top Employers in 2015 and recognized as one 
of the most innovative users of business technology by 
InformationWeek. Through our industry-leading workplace 

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diversity initiatives, we earned a perfect score on the 
Corporate Equality Index, and were pleased to be 
recognized as one of the best places to work for LGBT 
equality by the Human Rights Campaign Foundation. 

Since 2002, more than 28,000 students have directly 
participated in hands-on science programs through 
Biogen’s Community Labs. In addition, in 2015 the 
Biogen Foundation increased its focus on expanding 
these types of experiences worldwide. Some of the 
Foundation’s key initiatives included:

 » Support for the Association of Science – Technology 
Centers’ “World Biotech Tour,” which connects  
international science center professionals with 
students, teachers and the general public through 
interactive biotechnology-focused programming 
and seminars. In 2015, the World Biotech Tour 
visited science centers in Lisbon, Tokyo and 
Brussels, and in 2016 will extend efforts to  
Australia, Canada, Italy and Thailand.

 » Funding for the Biogen Foundation’s “Ignite  
the Power of STEM” micro-grants program,  
which supports science education projects  

14

B U I L D I N G  T H E  N E X T  B I O G E N

H E M O P H I L I A  C A R E G I V E R

CHARI T Y   B.

Hemophilia

Following emergency surgery to remove 
a ruptured spleen shortly a(cid:4)  er his birth, 
Charity’s son, Michael, was diagnosed with 
severe Hemophilia A. She didn’t know  
anything about hemophilia and made it her 
mission to eff  ectively manage his disorder.

That was 19 years ago. This past fall, Charity 
sent Michael off to  college, confident he 
will manage on his own, as he continues to 
be active in the hemophilia community.

Charity was thrilled when Michael told her 
he had decided to pursue a degree in public 
health, using what he learned as a patient to 
impact the treatment and care of others.

This story refl ects the personal experiences of one 
person, and is not intended to imply any therapeutic 
benefi t, results or experiences with Biogen products.

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B I O G E N   2 0 1 5   A N N U A L   R E P O R T

15

in Massachusetts and North Carolina schools. 
These awards promote science literacy and give 
teachers new programming and classroom tools 
with the aim of inspiring students to pursue 
careers in science.

 » Funding organizations that provide access to 

innovative science learning, teacher development 
and student support, including grants to Citizen 
Schools, Teach for America and uAspire.

As part of our commitment to corporate transparency 
and global citizenship we conduct a full materiality 
assessment that is refreshed annually. This strategic 
exercise helps us identify and prioritize the economic, 
environmental and social issues that we believe 
are most critical to our company’s success and that 
matter most to a wide variety of internal and external 
stakeholders. These issues are summarized in 
Biogen’s Corporate Citizenship Report.

Individual dedication to corporate responsibility from 
each one of our employees forms the foundation for 
our company, and continues to be a source of strength 
as we grow as an organization.

L O O K I N G   A H E A D

For nearly four decades, our success has been 
grounded in an enduring commitment to cutting-edge 
science and the needs of patients. This commitment, 
coupled with our singular focus on making a 
meaningful difference in the treatment of disease, 
will propel us forward as we build the next Biogen. 

We have built a successful and growing business 
by putting science, patients and our employees 
at the center of every decision and investment we 
make, and we are proud of the impact our efforts 
are having. We believe we are well-positioned 
to leverage advances in biology, genomics and 
technology as we pursue treatments for some of 
the most complex diseases. 

As we embark on building the Biogen of the future, 
we will focus on areas with the potential to have the 
most impact, developing life-changing treatments 
for people suffering from devastating conditions.

George A. Scangos, Ph.D.
CHIEF EXECUTIVE OFFICER

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16

B U I L D I N G   T H E   N E X T   B I O G E N

P R O D U C T   P I P E L I N E

Phase I

Phase II

Phase III

Filed

FILED

ZINBRYTA (High-Yield Process)
Relapsing-remitting MS | Collaboration: AbbVie Biotherapeutics

PHASE III

ADUCANUMAB (BIIB037)
Alzheimer’s disease | Collaboration: Neurimmune

NUSINERSEN (IONIS-SMNRx)
Spinal muscular atrophy | Collaboration: Ionis Pharmaceuticals

GAZYVA (GA101)
First-line, indolent non-Hodgkin’s lymphoma | Collaboration:Genentech

GAZYVA (GA101)
First-line, diffuse large B-cell lymphoma | Collaboration: Genentech

OCRELIZUMAB
Primary progressive and relapsing multiple sclerosis
Collaboration: Genentech

PHASE II

AMISELIMOD (MT-1303)
Multiple autoimmune indications
Collaboration: Mitsubishi Tanabe Pharma Corp.

ANTI-LINGO-1 (BIIB033)
Multiple sclerosis

BG00011 (STX-100)
Idiopathic pulmonary fi brosis

BAN2401 (Humanized anti-amyloid beta mab)
Alzheimer’s disease | Collaboration: Eisai Co., Ltd.

E2609 (BACE1 inhibitor)
Alzheimer’s disease | Collaboration: Eisai Co., Ltd.

TYSABRI
Acute ischemic stroke

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B I O G E N   2 0 1 5   A N N U A L   R E P O R T

17

Phase I

Phase II

Phase III

Filed

PHASE II cont.

RAXATRIGINE (CNV1014802)
Trigeminal neuralgia

XLRS GENE THERAPY
RAAV X-linked juvenile retinoschisis | Collaboration: AGTC

PHASE I

ANTI-ALPHA-SYNUCLEIN MAB (BIIB054)
Parkinson’s disease

ANTI-BDCA2
Systemic lupus erythematosus

BIIB061 (Oral re-myelination)
Multiple sclerosis

BIIB063
Sjögren’s Syndrome

DAPIROLIZUMAB PEGOL (Anti-CD40L)
Systemic lupus erythematosus | Collaboration: UCB Pharma

IONIS-DMPK-2.5RX
Myotonic dystrophy, type 1 | Collaboration: Ionis Pharmaceuticals

IONIS-SOD1RX
Amyotrophic lateral sclerosis | Collaboration: Ionis Pharmaceuticals

BIOSIMILARS

FLIXABI
Multiple Immunology Indications in Europe
Joint venture: Samsung Bioepis

ADALIMUMAB
Multiple Immunology Indications in Europe
Joint venture: Samsung Bioepis

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18

B U I L D I N G  T H E  N E X T  B I O G E N

F I N A N C I A LS

G A A P  T O  N O N - G A A P  R E C O N C I L I AT I O N

Diluted EPS and Net Income Attributable to Biogen Inc.

(unaudited, $ in millions except per share amounts)

FY 11 FY 12 FY 13 FY 14 FY 15

GAAP diluted EPS

$5.04

$5.76

$7.81 $12.37 $15.34

Adjustments to GAAP Net Income Attributable to Biogen Inc. (see below)

0.86

0.77

1.15

1.46

$1.67

Non-GAAP diluted EPS

$5.90

$6.53

$8.96 $13.83 $17.01

(unaudited, $ in millions)

FY 11 FY 12 FY 13 FY 14 FY 15

GAAP Net Income Attributable to Biogen Inc.

$1,234 $1,380 $1,862 $2,935 $3,547

Amortization of acquired intangible assets

207

194

331

473

365

(Gain) loss on fair value remeasurement of contingent  consideration

Restructuring charges

Weston exit costs

Donation to Biogen Foundation

27

2

36

19

––

––

Stock option expense and other

12

17

10

(1)

(39)

–

27

–

–

–

35

12

31

93

–

–

–

Income tax effect related to reconciling items

(62)

(53)

(93)

(135)

(104)

Non-GAAP Net Income Attributable to Biogen Inc.

$1,446 $1,567 $2,136 $3,281 $3,932

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B I O G E N  2 0 1 5  A N N U A L  R E P O R T

19

F R E E  C A S H  F L O W  R E C O N C I L I AT I O N

(unaudited, $ in millions)

FY 11 FY 12 FY 13 FY 14 FY 15

Net cash flows provided by operating activities

$1,728 $1,880 $2,345 $2,942 $3,716

Purchases of property, plant and equipment (Capital Expenditures)

208

255

246

288

643

Contingent consideration related to Fumapharm AG acquisition

–

–

15

375

850

Free Cash Flow

$1,520 $1,625 $2,084

$2,279 $2,223

NOTES:  The non-GAAP net income attributable to Biogen Inc. and non-GAAP diluted EPS presented are defi ned as reported, or GAAP, values 
excluding (1) certain purchase accounting and merger-related adjustments, (2) stock option expense, (3) other select items, and (4) their related 
tax  effects.  Free  cash  fl ow  is  defi ned  as  net  cash  fl ows  provided  by  operating  activities  less  purchases  of  property,  plant  and  equipment  and 
contingent consideration related to Fumapharm AG acquisition as disclosed within our Form 10-K. We believe that the disclosure of these non-
GAAP  fi nancial  measures  provides  additional  insight  into  the  ongoing  economics  of  our  business  and  refl ects  how  we  manage  our  business 
internally,  set  operational  goals  and  forms  the  basis  of  our  management  incentive  programs.  These  non-GAAP  fi nancial  measures  are  not  in 
accordance with GAAP and should not be viewed in isolation or as a substitute for reported, or GAAP, net income attributable to Biogen Inc. and 
diluted EPS. Numbers may not foot due to rounding. Additional reconciliations of our non-GAAP fi nancial measures can be found in the Investors 
section of www.biogen.com.

SAFE HARBOR: This annual report contains forward-looking statements, including statements regarding our goals, prospects and business 
strategies, potential of recently launched products, our pipeline and the development of new treatments and biosimilars, anticipated regulatory 
fi lings  and  actions,  anticipated  data  readouts,  and  research  and  development  and  business  development  activities.  These  forward-looking 
statements  may  be  accompanied  by  such  words  as  “anticipate,”  “believe,”  “could,”  “estimate,”  “expect,”  “forecast,”  “intend,”  “may,”  “plan,” 
“potential,” “project,” “target,” “will” and other words and terms of similar meaning. You should not place undue reliance on these statements. 
These statements involve risks and uncertainties that could cause actual results to differ materially from those refl ected in such statements, 
including: our dependence on sales from our principal products; failure to compete effectively due to signifi cant product competition in the markets 
for  our  products;  diffi culties  in  obtaining  and  maintaining  adequate  coverage,  pricing  and  reimbursement  for  our  products;  risks  associated 
with current and potential future healthcare reforms; 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; 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; the risk that positive results  in a clinical trial 
may not be replicated in subsequent or confi rmatory 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; problems with our manufacturing processes; our dependence on collaborators 
and  other  third  parties  for  the  development  and  commercialization  of  products  and  other  aspects  of  our  business,  which  are  outside  of  our 
control; failure to manage our growth and execute our growth initiatives; failure to achieve the anticipated benefi ts and savings from our corporate 
restructuring efforts; risks relating to technology failures or breaches; failure to comply with legal and regulatory requirements; risks related to 
indebtedness; the risks of doing business internationally, including currency exchange rate fl uctuations; charges and other costs relating to our 
properties; fl uctuations in our effective tax rate; risks relating to investment in and expansion of manufacturing capacity for future clinical and 
commercial requirements; the market, interest and credit risks associated with our portfolio of marketable securities; risks relating to our ability 
to repurchase stock, including at favorable prices; risks relating to access to capital and credit markets; 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; 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 fi led with the SEC. These statements are based on our current beliefs 
and expectations and speak only as of April 1, 2016. We do not undertake any obligation to publicly update any forward-looking statements.

NOTE REGARDING TRADEMARKS: ALPROLIX®, AVONEX®, BENEPALI®, BIOGEN®, ELOCTATE®, FLIXABI®, PLEGRIDY®, RITUXAN®, TECFIDERA®, 
and TYSABRI® are registered trademarks of Biogen. ZINBRYTATM is a trademark of Biogen. GAZYVA® is a registered trademark of Genentech, Inc. All 
other trademarks are the intellectual property of their respective owners.

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20

B U I L D I N G   T H E   N E X T   B I O G E N

M A N A G E M E N T   T E A M

E X E C U T I V E   M A N A G E M E N T

(Left to Right)

Kenneth DiPietro
Executive Vice President, Human Resources

Spyros Artavanis-Tsakonas, Ph.D.
Executive Vice President and Chief Scientifi c Offi cer

Paul J. Clancy
Executive Vice President, Finance and Chief Financial Offi cer

Alfred W. Sandrock, Jr., M.D., Ph.D.
Executive Vice President, Neurology Discovery & Development
and Chief Medical Offi cer

Susan H. Alexander
Executive Vice President, Chief Legal Offi cer and Corporate Secretary

Adam Koppel, M.D., Ph.D.
Executive Vice President, Strategy and Business Development

George A. Scangos, Ph.D.
Chief Executive Offi cer

Adriana Karaboutis
Executive Vice President, Technology, Business Solutions
and Corporate Affairs

John G. Cox
Executive Vice President, Pharmaceutical Operations and 
Technology and Global Therapeutic Operations

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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, 2015

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 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” and “smaller reporting 
company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer 

  Accelerated filer 

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

 Smaller reporting company 

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 $94,898,425,323.

As of January 29, 2016, the registrant had 218,672,717 shares of common stock, $0.0005 par value, outstanding.

Portions of the definitive proxy statement for our 2016 Annual Meeting of Stockholders are incorporated by reference 

into Part III of this report.

DOCUMENTS INCORPORATED BY REFERENCE

   
 
 
 
Table of Contents

BIOGEN INC.
ANNUAL REPORT ON FORM 10-K
For the Year Ended December 31, 2015
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

PART IV

Signatures

Consolidated Financial Statements

Exhibit Index

Page

1

32

43

44

45

45

46

48

50

79

81

81

82

82

83

83

83

83

83

84

85

F- 1

A- 1

 
 
Table of Contents

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 “anticipate,” 
“believe,” “could,” “estimate,” “expect,” “forecast,” “intend,” “may,” “plan,” “potential,” “project,” “target,” “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;

• 

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, filing 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, cost savings, and charges related to our corporate restructuring initiatives; 

•  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 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 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; and

• 

the impact of new laws and accounting standards.

These forward-looking statements involve risks and uncertainties, including those that are described in the 
“Risk Factors” section of 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.

Table of Contents

NOTE REGARDING COMPANY AND PRODUCT REFERENCES

Throughout this report, “Biogen,” the “Company,” “we,” “us” and “our” refer to Biogen Inc. (formerly Biogen 
Idec Inc.) and its consolidated subsidiaries. References to “RITUXAN” refer 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 “ANGIOMAX” refers to both ANGIOMAX (the trade name for bivalirudin in the U.S., Canada and Latin 
America) and ANGIOX (the trade name for bivalirudin in Europe).

NOTE REGARDING TRADEMARKS

ALPROLIX®, AVONEX®, BENEPALI®, ELOCTATE®, FLIXABI®, PLEGRIDY®, RITUXAN®, TECFIDERA® and TYSABRI® are 

registered trademarks of Biogen. FUMADERMTM and ZINBRYTATM are trademarks of Biogen. Other trademarks 
referenced in this report are the property of their respective owners. 

Table of Contents

Item 1.  

Business

Overview

PART I

Biogen is a global biopharmaceutical company focused on discovering, developing, manufacturing and 

delivering therapies to patients for the treatment of neurodegenerative diseases, hematologic conditions and 
autoimmune disorders.

Our marketed products include TECFIDERA, AVONEX, PLEGRIDY, TYSABRI and FAMPYRA for multiple sclerosis 
(MS), ELOCTATE for hemophilia A and ALPROLIX for hemophilia B, and FUMADERM for the treatment of severe plaque 
psoriasis. We also have a collaboration agreement with Genentech, Inc. (Genentech), a wholly-owned member of the 
Roche Group (Roche Group), which entitles us to 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 
indicated for the treatment of CLL, and other potential anti-CD20 therapies.

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 areas of 
our scientific, manufacturing and technical expertise and scientific adjacencies. In addition to our innovative drug 
development efforts, we aim to leverage our manufacturing capabilities and scientific expertise to extend our 
mission to improve the lives of patients living with serious diseases through the development, manufacture and 
marketing of biosimilars through Samsung Bioepis, our joint venture with Samsung BioLogics Co. Ltd. (Samsung 
Biologics). 

1

Table of Contents

Key Developments

During 2015 and early 2016, we had a number of key developments affecting our business.  

Corporate Matters

Company Name Change

In March 2015, we changed our name from Biogen Idec Inc. to Biogen Inc.

Corporate Restructuring

In October 2015, we announced a corporate restructuring, which includes a reduction in workforce and 
discontinuation of certain programs. We are reinvesting the resulting savings to support key commercial activities 
and the advancement of our pipeline candidates.

Capital Allocation

In 2015, our capital allocation strategy included the following elements:

Share
Repurchase
Program

Returned approximately $5.0 billion to our shareholders through our share repurchase program
Utilized a portion of the proceeds from our $6.0 billion senior unsecured debt offering completed
in September 2015 to fund our share repurchase program

Acquisitions
and
Collaborations

Acquired Convergence Pharmaceuticals (Convergence), a clinical-stage biopharmaceutical
company with a focus on developing product candidates for neuropathic pain
Obtained exclusive worldwide license, excluding Asia, from Mitsubishi Tanabe Pharma
Corporation (MTPC) to amiselimod (MT-1303), a late stage experimental medicine with potential
in multiple autoimmune indications
Entered into a collaboration agreement with Applied Genetic Technologies Corporation (AGTC) to
develop gene-based therapies for multiple ophthalmic diseases

Investment in
Manufacturing

Acquired land in Solothurn, Switzerland, where we plan to build a biologics manufacturing facility
in the Commune of Luterbach over the next several years
Acquired the drug product manufacturing facility and supporting infrastructure of Eisai, Inc.
(Eisai) in Research Triangle Park (RTP), North Carolina

Corporate Responsibility

Environmental Sustainability

Humanitarian Aid

In 2015, we were named the biotechnology 
industry leader on the Dow Jones Sustainability World 
Index, an index that tracks the economic, 
environmental and social strategy and performance of 
the 2,500 largest companies in the S&P Global Broad 
Market Index.

In 2015, we announced that we achieved carbon 

neutrality, meaning we believe we have effectively 
neutralized all of the carbon emissions associated 
with our business.

In 2014, we and Swedish Orphan Biovitrum AB 

(publ) (Sobi) began working with the World Federation 
of Hemophilia (WFH) to help people with hemophilia in 
the developing world through our pledge to donate up 
to one billion international units (IUs) of clotting factor 
therapy for humanitarian use, of which up to 500 
million IUs will be donated to WFH USA over a period 
of five years. In 2015, we made the first shipments of 
hemophilia therapy to WFH USA.

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Table of Contents

Product/Pipeline Developments

ZINBRYTA (daclizumab high yield process)

Multiple Sclerosis

In March 2015, the European Medicines Agency (EMA) validated our marketing authorization application
(MAA) for ZINBRYTA for the treatment of relapsing forms of MS in the European Union (E.U.).

In April 2015, the U.S. Food and Drug Administration (FDA) accepted our Biologics License Application (BLA)
for ZINBRYTA for the treatment of relapsing forms of MS in the United States (U.S.).

TYSABRI (natalizumab)

In July 2015, the results of ACTION, our Phase 2 trial investigating TYSABRI in acute ischemic stroke, did not
demonstrate an impact on change in infarct volume, the primary endpoint. Exploratory endpoints suggested
that TYSABRI had a beneficial impact on patient functional deficits.

In October 2015, the results of ASCEND, our Phase 3 study evaluating TYSABRI in secondary progressive MS
(SPMS), did not achieve its primary and secondary endpoints, and the development of TYSABRI in SPMS was
discontinued.

Anti-LINGO

In January 2015, we announced top-line results from RENEW, our Phase 2 acute optic neuritis trial.

ELOCTATE [Antihemophilic Factor (Recombinant), Fc Fusion Protein]

Hemophilia

In November 2015, the European Commission (EC) approved ELOCTA, the approved trade name for ELOCTATE
in the E.U., for the treatment of hemophilia A.

Sobi has assumed final development and commercialization of ELOCTA in their territory, which essentially
includes Europe, North Africa, Russia, and certain markets in the Middle East (Sobi Territory).

ALPROLIX [Coagulation Factor IX (Recombinant), Fc Fusion Protein]

In June 2015, the EMA validated our MAA for ALPROLIX for the treatment of hemophilia B.

In July 2015, Sobi exercised its option to assume final development and commercialization of ALPROLIX in
the Sobi Territory.

Aducanumab (BIIB037)

Neurodegeneration

In March 2015 and July 2015, we announced data from pre-specified interim analyses of PRIME, our Phase
1b study of aducanumab.

In September 2015, we enrolled our first patient in our two global Phase 3 studies, ENGAGE and EMERGE, to
assess the efficacy and safety of aducanumab in people with early Alzheimer's disease. In October 2015, we
announced that we received FDA agreement on a special protocol assessment on the Phase 3 study
protocols. Such agreement constitutes FDA’s concurrence on the design and size of the clinical trials which
will form the basis for approval of aducanumab.

Nusinersen (ISIS-SMNRx)

Other Programs

In June 2015, our collaborator, Ionis Pharmaceuticals, Inc. (Ionis), formerly known as Isis Pharmaceuticals,
Inc., announced additional data from two Phase 2 studies of nusinersen for the treatment of SMA in infants
and children. There are two ongoing Phase 3 studies of nusinersen.

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Table of Contents

GAZYVA (obinutuzumab)

Genentech Relationships

In February 2015, the Roche Group announced positive results from its Phase 3 GADOLIN study of GAZYVA in
non-Hodgkin’s lymphoma.

Ocrelizumab

In June 2015, the Roche Group announced positive results from two Phase 3 studies evaluating ocrelizumab
compared with interferon beta-1a in people with relapsing forms of MS.

In September 2015, the Roche Group announced positive results from a Phase 3 study evaluating
ocrelizumab in people with primary progressive MS (PPMS).

Under our agreement with Genentech, if ocrelizumab is approved, we will receive tiered royalty payments on
sales of ocrelizumab.

Biosimilars (Samsung Bioepis - Biogen's Joint Venture with Samsung Biologics)

BENEPALI

In November 2015, Samsung Bioepis received a positive opinion from the Committee for Medicinal Products
for Human Use (CHMP) for the MAA for BENEPALI, an etanercept biosimilar referencing ENBREL. In January
2016, the EC approved the MAA for BENEPALI for marketing in the E.U. Under our agreement with Samsung
Bioepis, we will manufacture and commercialize BENEPALI in specified E.U. countries.

FLIXABI

In March 2015, the EMA validated and accepted Samsung Bioepis’ MAA for FLIXABI, an infliximab biosimilar
candidate referencing REMICADE.

During 2015, we discontinued several programs, including our study of Neublastin in neuropathic pain, our
Phase 3 program for TECFIDERA in SPMS, our Phase 3 program evaluating TYSABRI in SPMS, the
development of anti-TWEAK in lupus nephritis, and certain activities in immunology and fibrosis research.

Discontinued Programs

4

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Marketed Products

The following graphs show our product sales and unconsolidated joint business revenues by principal product 

and geography as a percentage of revenue for the years ended December 31, 2015, 2014 and 2013.

(1) Other includes FAMPYRA, ELOCTATE, ALPROLIX and FUMADERM

Product sales for TECFIDERA, AVONEX and TYSABRI and unconsolidated joint business revenues for RITUXAN 
each accounted for more than 10% of our total revenue for the years ended December 31, 2015, 2014 and 2013. 
For additional financial information about our product and other revenues and geographic areas in which we operate, 
please read Note 24, 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 the “Risk Factors” section of this report. 

5

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Multiple Sclerosis

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 relapsing MS 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.

None

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

Relapsing forms of MS

None

Relapsing forms of MS in the U.S.

None

RRMS in the E.U.

Relapsing forms of MS

None

Crohn's disease in the U.S.

Walking ability for patients with MS Acorda Therapeutics, Inc.

(Acorda)

U.S.
United Kingdom
France
Germany
Italy
Spain

U.S.
United Kingdom
France
Germany
Italy
Spain

U.S.
United Kingdom
France
Germany
Italy
Spain

U.S.
United Kingdom
France
Germany
Italy
Spain

France
Germany
Spain
Canada

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Table of Contents

Hemophilia

We develop, manufacture and market products designed to treat patients with hemophilia A and B. Hemophilia 

A is caused by having substantially reduced or no Factor VIII activity and hemophilia B is caused by having 
substantially reduced or no Factor IX activity, each of which is needed for normal blood clotting. People with 
hemophilia A and B experience bleeding episodes that may cause pain, irreversible joint damage and life-threatening 
hemorrhages. Prophylactic infusions of Factor VIII or Factor IX, as applicable, temporarily replace clotting factor 
necessary to control bleeding and help protect against new bleeding episodes. 

Our products for hemophilia and major markets include: 

Product

Indication

Adults and children with
hemophilia A for control of
bleeding episodes

Collaborator

Sobi

Adults and children with
hemophilia B for control of
bleeding episodes

Sobi

Major Markets

U.S.
Japan

U.S.
Japan

In November 2015, the EC approved ELOCTA for the treatment of hemophilia A in the E.U. Under our 

collaboration agreement with Sobi, Sobi has assumed responsibility for final development and commercialization of 
ELOCTA in the Sobi Territory.

Genentech Relationships

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

with respect to RITUXAN, GAZYVA 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

U.S.

For information about our unconsolidated joint business and agreement with Genentech, please read Note 1, 
Summary of Significant Accounting Policies and Note 19, Collaborative and Other Relationships to our consolidated 
financial statements included in this report.  

Other

Product

Indication

Moderate to severe plaque
psoriasis

Collaborator

None

Major Market

Germany

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Marketing and Distribution

Patient Support and Access 

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 and order, delivery and fulfillment services. 

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 
and their caregivers and healthcare professionals 
understand, compare and select insurance options 
and programs that are available to them. In the U.S., 
we have established programs that provide qualified 
uninsured or underinsured patients with marketed 
products at no or reduced charge, based on specific 
eligibility criteria. We also provide charitable 
contributions that may assist eligible commercially-
insured patients with out-of-pocket expenses 
associated with their costs for our products.

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 
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. 

Distribution Arrangements

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.  

RITUXAN and GAZYVA are marketed and 
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, 2015, 2014 and 2013, and on 
a combined basis, accounted for approximately 60% 
of our gross product revenues for such years, 
respectively. For additional information, please read 
Note 1, Summary of Significant Accounting Policies to 
our consolidated financial statements included in this 
report.

8

Table of Contents

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 
extension (for up to five 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.  

9

Table of Contents

Product
TECFIDERA

AVONEX and
PLEGRIDY
PLEGRIDY

TYSABRI

FAMPYRA

ELOCTATE and
ALPROLIX

ELOCTATE

ALPROLIX

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

U.S.

U.S.

U.S.
Europe

Europe
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

5,840,299

6,602,503

7,807,167
0804237

1485127
0484186

1732548

Europe

23775536

U.S.

U.S.
U.S.

U.S.

Europe

Europe

Europe

U.S.
U.S.
U.S.

7,348,004

7,862,820
8,329,182

7,404,956

1624891

1625209

2298347

9,050,318
9,241,978
9,233,145

Footnotes follow on next page.

Patent 
Expiration(1)
2018
2018
2028
2018
2019

2019
2020
2019(2)

2028(3)
2026

2022
2023
2025
2019

2017

2020

2023
2020

2023
2016(4)

2025(5)

2025(6)

2024

2024
2024

2025

2024

2024

2024

2031
2031
2031

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
Humanized immunoglobulins; nucleic acids;
pharmaceutical compositions; methods of use
Humanized recombinant antibodies; nucleic
acids and host cells; processes for production;
therapeutic compositions; methods of use
Methods of treatment
Humanized immunoglobulins; nucleic acids;
pharmaceutical compositions; medical uses
Methods of use
Formulations containing aminopyridines,
including fampridine
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
Composition of matter covering rFIXFc and
rFVIIIFc
Composition of matter covering rFIXFc and
rFVIIIFc
Composition of matter covering rFIXFc and
rFVIIIFc
Composition of matter covering rFIXFc and
rFVIIIFc
Composition of matter covering rFIXFc and
rFVIIIFc
Methods of treatment
Methods of treatment
Methods of treatment

10

Table of Contents

(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:

Product
TECFIDERA U.S.

Territory

Expected Expiration
2018

PLEGRIDY

TYSABRI

FAMPYRA

ELOCTATE

ELOCTA*
ALPROLIX

E.U.

U.S.

E.U.

U.S.

E.U.

E.U.

U.S.

E.U.
U.S.

2024

2026

2024

2016

2016

2021

2026

2025
2026

*ELOCTA is commercialized by Sobi per our collaboration agreement.

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

to 2029.

(4)  Reflects SPCs granted in most European countries, except for Germany where the application for SPC is pending.

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

to 2026.

(6)  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 the “Risk Factors” section of this report, and a discussion of 
legal proceedings related to certain patents described above are set forth in Note 20, Litigation to our consolidated 
financial statements included in this report.

11

Additional information about the competition that 

our marketed products face is set forth below.

TECFIDERA, AVONEX, PLEGRIDY and TYSABRI

TECFIDERA, AVONEX, PLEGRIDY and TYSABRI 

each compete with one or more of the following 
products: 

Competing Product
COPAXONE 
(glatiramer acetate)
GLATOPA (glatiramer
acetate)
REBIF 
(interferon-beta-1)

BETASERON/BETAFERON
(interferon-beta-1b)
EXTAVIA 
(interferon-beta-1b)
GILENYA (fingolimod)
AUBAGIO (teriflunomide)
LEMTRADA
(alemtuzumab)

Competitor
Teva Pharmaceuticals
Industries Ltd.
Sandoz, a division of
Novartis AG
Merck KGaA (and co-
promoted with Pfizer Inc.
in the U.S.)
Bayer Group

Novartis AG

Novartis AG
Sanofi
Sanofi

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 candidate is ocrelizumab, a potential 
treatment for PPMS being developed by the Roche 
Group. While we have a financial interest in 
ocrelizumab, future sales of our MS products may be 
adversely affected by the commercialization of 
ocrelizumab, as well as by other MS products we or 
our competitors are developing. Future sales may also 
be negatively impacted by the introduction of generics, 
prodrugs of existing therapeutics or biosimilars of 
existing products.

FAMPYRA

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. 

Table of Contents

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 products similar to those we 
are developing or already market 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 
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 an important 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 may result in 
increased competition for our marketed products or 
could result in pricing pressure on our 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.

12

Table of Contents

ELOCTATE and ALPROLIX

RITUXAN and GAZYVA in Oncology

ELOCTATE and ALPROLIX compete with 

recombinant Factor VIII and IX products, respectively, 
including:

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. 

Pfizer

FUMADERM

Emergent
Biosolutions
Baxalta

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

Competitor

Baxalta

Baxalta

Bayer

CSL Behring

Baxalta

Pfizer

Competing Product
ELOCTATE:
ADVATE 
[Antihemophilic Factor 
(Recombinant)]
ADYNOVATE
[Antihemophilic Factor 
(Recombinant), PEGylated]
KOGENATE FS 
[Antihemophilic Factor 
(Recombinant)]
HELIXATE FS 
[Antihemophilic Factor 
(Recombinant)]
RECOMBINATE 
[Antihemophilic Factor 
(Recombinant)]
XYNTHA 
[Antihemophilic Factor 
(Recombinant)], Plasma/Albumin-
Free
ALPROLIX:

BENEFIX Coagulation Factor IX
(Recombinant)
IXINITY Coagulation Factor IX
(Recombinant)
RIXUBIS [Coagulation Factor IX
(Recombinant)]

Our hemophilia products also compete with a 

number of plasma-derived Factor VIII and IX products. 
We are also aware of other longer-acting products as 
well as other technologies, such as gene therapies, 
that are in development, and if successfully developed 
and approved would compete with our hemophilia 
products. 

13

Table of Contents

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.

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 the “Risk 
Factors” section of this report. 

Product Candidate

Collaborator

PHASE 1

PHASE 2

PHASE 3

FILED

ZINBRYTA

AbbVie Therapeutics

Multiple Sclerosis (MS)

GAZYVA

GAZYVA

GAZYVA

Genentech (Roche Group) RITUXAN-Refractory Indolent Non Hodgkin’s Lymphoma

Genentech (Roche Group) Front-Line Indolent Non Hodgkin’s Lymphoma

Genentech (Roche Group) Front-Line Diffuse Large B-Cell Lymphoma

Nusinersen

Ionis Pharmaceuticals

Spinal Muscular Atrophy

Aducanumab

Neurimmune SubOne AG Alzheimer's Disease

Ocrelizumab

Genentech (Roche Group) Primary Progressive & Relapsing Multiple Sclerosis

Anti-LINGO

None

Optic Neuritis; Multiple Sclerosis

Amiselimod

Mitsubishi Tanabe

Multiple Autoimmune Indications

BAN2401

E2609

Raxatrigine

TYSABRI

rAAV-XLRS

Eisai

Eisai

None

None

AGTC

Alzheimer's Disease

Alzheimer's Disease

Trigeminal Neuralgia

Acute Ischemic Stroke

X-linked Juvenile Retinoschisis

BG00011 (STX-100)

None

Idiopathic Pulmonary Fibrosis

Dapirolizumab pegol

UCB Pharma

SLE*

BIIB061

None

Multiple Sclerosis

IONIS-DMPKRx

Ionis Pharmaceuticals

Myotonic Dystrophy

Anti-BDCA2

Anti-alpha-synuclein

BIIB063

None

None

None

SLE*

Parkinson’s Disease

Sjogren’s Syndrome

IONIS-SOD1Rx (BIIB067)

Ionis Pharmaceuticals

ALS

FLIXABI (infliximab)

Samsung Bioepis

Multiple Immunology Indications in Europe

Biosimilar adalimumab Samsung Bioepis

Multiple Immunology Indications in Europe

* Systemic lupus erythematosus

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For information about certain of our agreements with collaborators and other third parties, please see 
“Business Relationships” below and Note 19, Collaborative and Other Relationships to our consolidated financial 
statements included in this report.

Late Stage Product Candidates

Additional information about our late stage product candidates, which includes programs in Phase 3 

development or in registration stage, is set forth below. 

ZINBRYTA (daclizumab high yield process)

ZINBRYTA is a monoclonal antibody for the treatment of RRMS.

Multiple Sclerosis

In June 2014, we announced positive top-line results from the Phase 3 DECIDE clinical trial, which
investigated ZINBRYTA as a potential once-monthly, subcutaneous treatment for RRMS. Results showed
that ZINBRYTA was superior on the study's primary endpoint, demonstrating a statistically significant
reduction in annualized relapse rates when compared to interferon beta-1a.

Our MAA for ZINBRYTA was validated by the EMA in March 2015, and the BLA was accepted by the FDA
in April 2015.

TYSABRI (natalizumab)

In May 2013, we completed patient enrollment in a Phase 3 study of TYSABRI in SPMS, known as
ASCEND. The study had a duration of approximately two years and involved approximately 875 patients.
SPMS is characterized by a steady progression of nerve damage, symptoms and disability.

In October 2015, the results of our Phase 3 ASCEND study did not achieve its primary and secondary
endpoints, and the development of TYSABRI in SPMS was discontinued.

ALPROLIX [Coagulation Factor IX (Recombinant), Fc Fusion Protein]

Hemophilia

In March 2014, ALPROLIX was approved by the FDA for the treatment of hemophilia B.

Pediatric data was required as part of the MAA for ALPROLIX that we submitted to the EMA. In February
2015, we and Sobi announced positive top-line results of the Kids B-LONG Phase 3 clinical study that
evaluated the safety, efficacy and pharmacokinetics of ALPROLIX in children under age 12 with severe
hemophilia B. Following these results, we filed a MAA in the E.U., which was validated by the EMA in
June 2015.

Aducanumab (BIIB037)

Neurodegeneration

In September 2015, we enrolled our first patient in our two global Phase 3 studies, ENGAGE and
EMERGE. ENGAGE and EMERGE will assess the efficacy and safety of aducanumab in approximately
2,700 people with early Alzheimer's disease. The studies are identical in design and eligibility criteria.
Each study will be conducted in more than 20 countries in North America, Europe and Asia. In October
2015, we announced that we received FDA agreement on a special protocol assessment on the Phase
3 study protocols.

Nusinersen (IONIS-SMNRx)

Other Programs

In August 2014, Ionis announced the initiation of a pivotal Phase 3 study evaluating nusinersen in
infants with SMA, the most common genetic cause of infant mortality. This Phase 3 study, known as
ENDEAR, is a randomized, double-blind, sham-procedure controlled thirteen month study in
approximately 110 infants diagnosed with SMA. The study is evaluating the efficacy and safety of a
12mg dose of nusinersen with a primary endpoint of survival or permanent ventilation.

In November 2014, Ionis announced the initiation of a pivotal Phase 3 study evaluating the efficacy and
safety of nusinersen in non-ambulatory children with SMA. This Phase 3 study, known as CHERISH, is a
randomized, double-blind, sham-procedure controlled fifteen month study in approximately 120 children
with SMA. The study is evaluating the efficacy and safety of a 12mg dose of nusinersen with a primary
endpoint of a change in the Hammersmith Functional Motor Scale-Expanded, a validated method to
measure changes in muscle function in patients with SMA.

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GAZYVA (obinutuzumab)

Genentech Relationships

The Roche Group is managing the following Phase 3 studies of GAZYVA:
GOYA: investigating the efficacy and safety of GAZYVA in combination with CHOP chemotherapy 
compared to RITUXAN with CHOP chemotherapy in previously untreated patients with CD20-positive 
diffuse large B-cell lymphoma.
GALLIUM: investigating the efficacy and safety of GAZYVA in combination with chemotherapy followed by 
maintenance with GAZYVA compared to RITUXAN in combination with chemotherapy followed by 
maintenance with RITUXAN in previously untreated patients with indolent non-Hodgkin's lymphoma.
GADOLIN: investigating the efficacy and safety of GAZYVA plus bendamustine compared with 
bendamustine alone in patients with RITUXAN-refractory, indolent non-Hodgkin's lymphoma. In February 
2015, the Roche Group announced positive results from the Phase 3 GADOLIN study. At a pre-planned 
interim analysis, an independent data monitoring committee determined that the study met its primary 
endpoint early, showing that people lived significantly longer without disease worsening or death 
(progression-free survival) when treated with GAZYVA plus bendamustine followed by GAZYVA alone, 
compared to bendamustine alone.

Ocrelizumab

In June 2015, the Roche Group announced positive results from two Phase 3 studies evaluating
ocrelizumab compared with interferon beta-1a in people with relapsing forms of MS. Treatment with
ocrelizumab compared with interferon beta-1a significantly reduced the annualized relapse rate over a
two-year period; significantly reduced the progression of clinical disability; and led to a significant
reduction in the number of lesions in the brain as measured by MRI.

In September 2015, the Roche Group announced positive results from a Phase 3 study evaluating
ocrelizumab in people with PPMS. Treatment with ocrelizumab significantly reduced the progression of
clinical disability compared with placebo, as measured by the Expanded Disability Status Scale.

Biosimilars (Samsung Bioepis - Biogen's Joint Venture with Samsung Biologics)

FLIXABI

Samsung Bioepis' MAA for FLIXABI, an infliximab biosimilars candidate referencing REMICADE, was
validated and accepted by the EMA in March 2015. If approved, under our agreement with Samsung
Bioepis, we have commercialization rights to FLIXABI in specified E.U. countries.

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Business Relationships

Eisai Co., Ltd.

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

AbbVie Biotherapeutics, Inc.

We have a collaboration agreement with AbbVie 

Biotherapeutics, Inc. aimed at advancing the 
development and commercialization of ZINBRYTA in 
MS.

Acorda Therapeutics, Inc.

We collaborate with Acorda to develop and 
commercialize products containing fampridine, such 
as FAMPYRA, in markets outside the U.S. We also 
have responsibility for regulatory activities and the 
future clinical development of related products in 
those markets.

Applied Genetic Technologies Corporation

In 2015, we entered into a collaboration 
agreement with AGTC to develop gene-based 
therapies for multiple ophthalmic diseases. The 
collaboration focuses 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. The 
agreement also provides us with options to early 
stage discovery programs in two ophthalmic diseases 
and one non-ophthalmic condition.

We have a collaboration with Eisai to jointly 
develop and commercialize E2609 and BAN2401, two 
Eisai product candidates for the treatment of 
Alzheimer’s disease. Eisai serves as the global 
operational and regulatory lead for 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. In smaller markets, Eisai will distribute 
these products and pay us a royalty.

The agreement also provides Eisai with options 

to jointly develop and commercialize two of our 
candidates for Alzheimer’s disease, aducanumab and 
an anti-tau monoclonal antibody, upon the exchange 
or provision of clinical data. Upon exercise of the 
applicable option, we will execute a separate 
collaboration agreement with Eisai on terms and 
conditions that mirror the financial arrangements we 
have with Eisai with respect to E2609 and BAN2401.

Genentech (Roche Group)

We have a collaboration agreement with 
Genentech which entitles us to certain financial and 
other rights with respect to RITUXAN, GAZYVA and 
other anti-CD20 product candidates. Additionally, 
under our agreement with Genentech, if ocrelizumab 
is approved, we will receive tiered royalty payments on 
sales of ocrelizumab.

Ionis Pharmaceuticals, Inc.

We have three separate exclusive, worldwide 
option and collaboration agreements with Ionis under 
which both companies will develop and commercialize 
antisense therapeutics for up to three gene targets, 
Ionis’ product candidates for the treatment of 
myotonic dystrophy type 1, and the antisense 
investigational candidate, nusinersen for the 
treatment of SMA. We also have a six-year research 
collaboration agreement with Ionis, which we entered 
into in 2013, under which both companies perform 
discovery level research and will develop and 
commercialize antisense and other therapeutics for 
the treatment of neurological disorders.

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Mitsubishi Tanabe Pharma Corporation

Sangamo BioSciences, Inc.

We have an exclusive, worldwide research, 
development and commercialization collaboration and 
license agreement with Sangamo BioSciences, Inc. 
(Sangamo) under which the companies will develop 
and commercialize product candidates using gene 
editing technologies for the treatment of two inherited 
blood disorders, sickle cell disease and beta-
thalassemia.

Swedish Orphan Biovitrum AB (publ)

We collaborate with Sobi to jointly develop and 

commercialize Factor VIII and Factor IX hemophilia 
products, including ELOCTATE and ALPROLIX. We have 
commercial rights for North America and for rest of 
the world markets outside of the Sobi Territory. Sobi 
has assumed final development and 
commercialization of ELOCTA in the Sobi Territory, and, 
has elected to opt-in to assume final development 
and commercialization of ALPROLIX if the MAA is 
approved by the EMA.

In 2015, we entered into an agreement with 
MTPC to exclusively license amiselimod, a late stage 
experimental medicine with potential in multiple 
autoimmune indications. Amiselimod is an oral 
compound that targets the sphingosine 1-phosphate 
receptor. Under the agreement, we obtained worldwide 
rights to amiselimod, excluding Asia. We are 
responsible for commercialization and are covering 
development costs outside of Asia. MTPC has the 
right to participate in our global clinical trials and has 
an option to co-promote non-MS indications in the 
U.S.

Samsung Bioepis

We and Samsung Biologics established a joint 
venture, Samsung Bioepis, to develop, manufacture 
and market biosimilar pharmaceuticals. In December 
2013, we entered into an agreement with Samsung 
Bioepis to commercialize, over a 10-year term, anti-
TNF biosimilar product candidates in specified E.U. 
countries, and, in the case of BENEPALI, Japan. To 
date, Samsung Bioepis' MAA for BENEPALI, an 
etanercept biosimilar referencing ENBREL, has been 
approved by the EC, and the MAA for FLIXABI, an 
infliximab biosimilars candidate referencing 
REMICADE, has been validated by the EMA. 

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's 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.

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Regulatory

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 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. 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 agency'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 thirty 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.

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•  Fast Track Status: The FDA may grant “fast track” 
status to products that treat serious diseases or 
conditions and fill an unmet medical need. Fast 
track is a process designed to expedite the 
review of such products by providing, among 
other things, more frequent meetings with the 
FDA to discuss the product's development plan, 
more frequent written correspondence from the 
FDA about trial design, eligibility for accelerated 
approval, and rolling review, which allows 
submission of individually completed sections of 
a NDA or BLA for FDA review before the entire 
filing is completed. Fast track status does not 
ensure that a product will be developed more 
quickly or receive FDA approval.

•  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 
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 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: Finally, the FDA may grant 

“priority review” status to products that offer 
major advances in treatment or provide a 
treatment where no adequate therapy exists. 
Priority review is intended to reduce the time it 
takes for the FDA to review a NDA or BLA.

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.

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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. A company 
can make only those claims relating to safety and 
efficacy that are approved by the FDA. 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 
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, where most 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 application is similar to the 
NDA or BLA in the U.S. and is evaluated by the 
Committee for Medicinal Products for Human Use 
(CHMP), the expert scientific committee of the EMA. If 
the CHMP determines that the marketing application 
fulfills the requirements for quality, safety, and 
efficacy, it will submit a favorable opinion to 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. The 
centralized procedure is required for all biological 
products, orphan medicinal products, and new 

21

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 nationalized procedure, which requires a 
separate application to and approval 
determination by each country; 

•  a decentralized procedure, whereby applicants 

submit identical applications to several countries 
and receive simultaneous approval; and 

•  a mutual recognition procedure, where applicants 
submit an application to one country for review 
and other countries may accept or reject the 
initial decision. 

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. 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 clearance 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.

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Good Clinical Practices

Orphan Drug Act

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 intended for diagnosis, prevention 
or treatment of life-threatening or very serious 
diseases affecting less than five in 10,000 people 
receive 10-year market exclusivity, protocol 
assistance, and access to the centralized procedure 
for marketing authorization.

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 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. 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, the imposition 
of restrictions on access or coverage of particular 
drugs or pricing determined based on perceived value.  

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, 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 
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.

Approval of Biosimilars 

The Affordable Care Act 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. 

Biosimilars legislation has also been in place in 

the E.U. since 2003. In December 2012, guidelines 
issued by the EMA for approving biosimilars of 
marketed monoclonal antibody products became 
effective. In the E.U., biosimilars have been approved 
under a specialized pathway of centralized 
procedures. The pathway allows sponsors of a 
biosimilar to seek and obtain regulatory approval 
based in part on the clinical trial data of an innovator 
product to which the biosimilar has been 
demonstrated 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.

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Table of Contents

Within the U.S.

•  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. For 
most brand name drugs, the amount of the basic 
rebate for each product is set by law as the 
greater of 23.1% (17.1% for clotting factors and 
certain other products) of the average 
manufacturer price (AMP) or the difference 
between AMP and the best price available from 
us to any customer (with limited exceptions). The 
rebate amount must be adjusted upward if AMP 
increases more than inflation (measured by the 
Consumer Price Index - Urban). This adjustment 
can cause the total rebate amount to exceed the 
minimum 23.1% (or 17.1%) basic rebate 
amount. 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 that 
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. In addition, clotting 
factors for hemophilia are typically paid under 
Medicare Part B. 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. The current payment rate for 
Medicare Part B drugs is ASP plus 6%. The 
payment rates for drugs in the hospital 
outpatient setting are subject to periodic 
adjustment. The CMS also has the statutory 
authority to adjust payment rates for specific 
drugs outside the hospital outpatient setting 

23

based on a comparison of ASP payment rates to 
widely available market prices or to AMP, which 
could decrease Medicare payment rates, but the 
authority has not yet been implemented. 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 and 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 may condition formulary 
placement on the availability of manufacturer 
discounts. In addition, manufacturers, including 
us, are required to provide to 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.

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.

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.

Table of Contents

•  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, hemophilia treatment centers 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., the E.U. represents our major 
market. Within the E.U., 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. Governments 
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 E.U. 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 the anti-kickback or similar 

24

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.

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.

Table of Contents

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, 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 United 
Kingdom generally will be subject to the Bribery Act. 
Penalties under the Bribery Act include potentially 
unlimited fines for 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 Cambridge, Massachusetts and RTP, 
North Carolina and are required to operate pursuant 
to certain permits.

25

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, 
and Acorda Therapeutics supplies FAMPYRA to us 
pursuant to its supply agreement with Alkermes, Inc.

Third-Party Suppliers and Manufacturers  

We principally use third parties to manufacture 
the active pharmaceutical ingredient (API), and to a 
lesser extent, 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 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 Cambridge and 
Hillerød facilities. 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.

Table of Contents

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 have announced our plans to expand 
our production capacity by building a large-scale 
biologics manufacturing facility in Solothurn, 
Switzerland, which is expected to be operational by 
the end of the decade.

Manufacturing Facilities

Our drug substance manufacturing facilities 

include:

Facility
RTP, North Carolina

Cambridge, MA

Hillerød, Denmark

Drug Substance Manufactured
ALPROLIX
AVONEX
ELOCTATE
PLEGRIDY
TYSABRI

AVONEX
ELOCTATE
PLEGRIDY

TYSABRI
Biosimilars

In addition to our drug substance manufacturing 

facilities, in August 2015, we expanded our 
capabilities by completing the purchase from Eisai of 
a drug product manufacturing facility and supporting 
infrastructure in RTP, North Carolina. This parenteral 
facility adds capabilities and capacity for filling 
biologics into vials.

We also lease from Eisai an oral solid dose 
products manufacturing facility in RTP, North Carolina, 
where we manufacture TECFIDERA and other solid 
dose products, including products for Eisai. This 
facility supplements our outsourced small molecule 
manufacturing capabilities. Under our lease 
arrangement, Eisai may provide us with packaging 
services for oral solid dose products. In August 2015, 
we agreed to purchase this facility following the 
expiration of our current three year lease in the third 
quarter of 2018.  

26

Table of Contents

Our Employees

As of December 31, 2015, we had approximately 7,350 employees worldwide.

Our Executive Officers (as of February 3, 2016)

Name
George A. Scangos, Ph.D.

Susan H. Alexander

Spyros Artavanis-Tsakonas, Ph.D.

Paul J. Clancy
Gregory F. Covino

John G. Cox

Kenneth DiPietro

Steven H. Holtzman

Adriana (Andi) Karaboutis

Current Position
Chief Executive Officer

Executive Vice President, Chief Legal Officer and Corporate
Secretary
Senior Vice President, Chief Scientific Officer

Executive Vice President, Finance and Chief Financial Officer
Vice President, Finance and Chief Accounting Officer

Executive Vice President, Pharmaceutical Operations and
Technology
Executive Vice President, Human Resources

Executive Vice President, Corporate Development

Adam Koppel, M.D., Ph.D.
Alfred W. Sandrock, Jr., M.D., Ph.D. Chief Medical Officer and Executive Vice President of Neurology
Discovery and Development

Executive Vice President, Technology, Business Solutions and
Corporate Affairs
Executive Vice President, Strategy and Business Development

Year
Joined
Biogen
2010

2006

2012

2001
2012

2003

2012

2011

2014

2014
1998

Age
67

59

69

54
50

53

57

61

53

46
58

George A. Scangos, Ph.D.

Experience

Dr. Scangos has served as our Chief Executive Officer since July 2010. Prior to that, he served as the
President and Chief Executive Officer of Exelixis, Inc., a drug discovery and development company, from
1996 to July 2010. From 1993 to 1996, Dr. Scangos served as President of Bayer Biotechnology,
where he was responsible for research, business development, process development, manufacturing,
engineering and quality assurance of Bayer’s biological products. Before joining Bayer in 1987, Dr.
Scangos was a professor of biology at Johns Hopkins University for six years, where he is still an
adjunct professor. Dr. Scangos served as non-executive Chairman of Anadys Pharmaceuticals, Inc., a
biopharmaceutical company, from 2005 to July 2010 and was a director of the company from 2003 to
July 2010. He also served as the Chair of the California Healthcare Institute in 2010 and was a
member of the board of the Global Alliance for TB Drug Development until 2010.

Public Company Boards

Board of Directors of Agilent Technologies, Inc., a provider of instruments, software, services and
consumables for laboratories
Board of Directors of Exelixis, Inc., a drug discovery and development company

Outside Affiliations

Chairman-elect of the Board of Directors of Pharmaceutical Research and Manufacturers of America
Board of Trustees of the Boston Museum of Science and the Biomedical Science Careers Program
National Board of Visitors of the University of California, Davis School of Medicine

Education

Cornell University, B.A. in Biology
University of Massachusetts, Ph.D. in Microbiology
Yale University, Jane Coffin Childs Post-Doctoral Fellow

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Table of Contents

Susan H. Alexander

Experience

Ms. Alexander has served as our Executive Vice President, Chief Legal Officer and Corporate Secretary
since December 2011. Prior to that, from 2006 to December 2011, Ms. Alexander served 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.

Education

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

Spyros Artavanis-Tsakonas, Ph.D.

Experience

Dr. Artavanis-Tsakonas has served as our Senior Vice President, Chief Scientific Officer since May
2013. Prior to that, Dr. Artavanis-Tsakonas served as our interim Chief Scientific Officer while on
sabbatical from Harvard Medical School from March 2012 to May 2013. Dr. Artavanis-Tsakonas has
been a Professor of Cell Biology at the Harvard Medical School since 1999. From 1999 through 2012,
he was Professor, Collège de France, serving as Chair of Biology and Genetics of Development, and from
1999 to 2007, he was also the K.J. Isselbacher- P. Schwartz Professor at the Massachusetts General
Hospital Cancer Center and Director of Developmental Biology and Cancer at the Harvard Medical
School. Dr. Artavanis-Tsakonas is the scientific co-founder of Exelixis Pharmaceuticals, Inc., a drug
discovery and development company, Cellzome, a drug discovery and development company, and
Anadys Pharmaceuticals, Inc., a biopharmaceutical company.

Education

Federal Institute of Technology, Zurich, M.Sc. in Chemistry
University of Cambridge, England, Ph.D. in Molecular Biology
Biozentrum, University of Basel and Stanford University, postdoctoral research

Paul J. Clancy

Experience

Mr. Clancy has served as our Executive Vice President, Finance and Chief Financial Officer since August
2007. Mr. Clancy joined Biogen, Inc. in 2001 and has held several senior executive positions with us,
including Vice President of Business Planning, Portfolio Management and U.S. Marketing, and Senior
Vice President of Finance with responsibilities for leading the Treasury, Tax, Investor Relations and
Business Planning groups. Prior to that, he spent 13 years at PepsiCo, a food and beverage company,
serving in a range of financial and general management positions.

Public Company Boards

Board of Directors of Agios Pharmaceuticals, Inc., a biopharmaceutical company
Board of Directors of Incyte Corporation, a biopharmaceutical company

Education

Babson College, B.S. in Finance
Columbia University, M.B.A.

Gregory F. Covino
Experience

Mr. Covino has served as our Vice President, Finance and Chief Accounting Officer since April 2012.
Prior to that, Mr. Covino served at Boston Scientific Corporation, a medical device company, as Vice
President, Corporate Analysis and Control since March 2010, 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

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Table of Contents

John G. Cox

Experience

Mr. Cox has served as our Executive Vice President, Pharmaceutical Operations and Technology since
June 2010 and has been leading our Global Therapeutic Operations since October 2015. Mr. Cox joined
Biogen, Inc. in 2003 and has held several senior executive positions with us, including Senior Vice
President of Technical Operations, Senior Vice President of Global Manufacturing, and Vice President of
Manufacturing and General Manager of Biogen’s operations in RTP. Prior to that, Mr. Cox held a number
of senior operational roles at Diosynth Inc., a life sciences manufacturing and services company, where
he worked in technology transfer, validation and purification. Prior to that, Mr. Cox focused on the same
areas at Wyeth Corporation, a life sciences company, from 1993 to 2000.

Public Company Boards

Board of Directors of Repligen Corporation, a life sciences company

Education

Arizona State University, B.S. in Biology
University of Michigan, M.B.A.
California State University, M.S. in Cell Biology

Kenneth DiPietro
Experience

Mr. DiPietro has served as our Executive Vice President, Human Resources since January 2012. Mr.
DiPietro joined Biogen from Lenovo Group, a technology company, where he served as Senior Vice
President, Human Resources from 2005 to June 2011. From 2003 to 2005, he served as Corporate
Vice President, Human Resources at Microsoft Corporation, a technology company. From 1999 to 2002,
Mr. DiPietro worked as Vice President, Human Resources at Dell Inc., a technology company. Prior to
that, he spent 17 years at PepsiCo, a food and beverage company, serving in a range of human
resource and general management positions.

Public Company Boards

Board of Directors of InVivo Therapeutics Corporation, a medical device company

Education

Cornell University, B.S. in Industrial and Labor Relations

Steven H. Holtzman

Experience

Mr. Holtzman has served as our Executive Vice President, Corporate Development since January 2011.
Prior to that, Mr. Holtzman was a founder of Infinity Pharmaceuticals, Inc., a drug discovery and
development company, where he served as Chair of the Board of Directors from company inception in
2001 to November 2012, Executive Chair of the Board of Directors in 2010 and as Chief Executive
Officer from 2001 to December 2009. From 1994 to 2001, Mr. Holtzman was Chief Business Officer at
Millennium Pharmaceuticals Inc., a biopharmaceutical company. From 1986 to 1994, he was a founder,
member of the Board of Directors and Executive Vice President of DNX Corporation, a biotechnology
company. From 1996 to 2001, Mr. Holtzman served as presidential appointee to the national Bioethics
Advisory Commission.

Education

Michigan State University, B.A.
Oxford University, B.Phil. graduate degree, which he attended as a Rhodes Scholar

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Table of Contents

Adriana (Andi) Karaboutis

Experience

Ms. Karaboutis has served as our Executive Vice President, Technology, Business Solutions and
Corporate Affairs since December 2015 and prior to that served as our Executive Vice President,
Technology and Business Solutions since joining Biogen in September 2014. Prior to that, Ms.
Karaboutis was Vice President and Global Chief Information Officer of Dell, Inc., where she was
responsible for leading a global IT organization focused on powering Dell as an end-to-end technology
solutions provider. Prior to joining Dell in 2010, Ms. Karaboutis spent over 20 years at General Motors
and Ford Motor Company in various international leadership positions including computer-integrated
manufacturing, supply chain operations, and information technology.

Public Company Boards

Board of Directors of Advance Auto Parts, an automotive aftermarket parts provider

Education

Wayne State University, B.S. in Computer Science

Adam Koppel, M.D., Ph.D.

Experience

Dr. Koppel has served as our Executive Vice President, Strategy and Business Development since
November 2015. Prior to that, Dr. Koppel served as our Senior Vice President and Chief Strategy Officer
from May 2014 to October 2015, responsible for leading corporate strategy and portfolio management.
Prior to joining us, Dr. Koppel served as a Managing Director of Brookside Capital, the public-equity
affiliate of Bain Capital, since November 2003. Prior to Brookside Capital, he served as Associate
Principal with McKinsey & Company, where he consulted to companies in the pharmaceutical and
biotechnology industries.

Public Company Boards

Board of Directors of PTC Therapeutics, Inc., a biopharmaceutical company
Board of Directors of Trevena, Inc., a biopharmaceutical company

Education

Harvard University, B.A.
Wharton School of the University of Pennsylvania, M.B.A.
University of Pennsylvania School of Medicine, M.D. and Ph.D.

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

Experience

Dr. Sandrock has served as our Chief Medical Officer and Executive Vice President of Neurology
Discovery and Development since November 2015. Prior to that, Dr. Sandrock served as our Chief
Medical Officer and Group Senior Vice President from May 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)

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Table of Contents

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.

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Table of Contents

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. We may be substantially 

dependent on sales from our principal products for many years, including an increasing reliance on sales and growth 
of TECFIDERA as we further expand into additional markets. 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; 

•  constraints and additional pressures on product pricing or price increases, due to a number of factors, 

including governmental or regulatory requirements, increased competition, or changes in reimbursement 
policies and practices of payors and other third parties; or 

•  adverse legal, administrative, regulatory or legislative developments. 

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 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 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; 

•  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.

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Similarly, the hemophilia treatment market is highly competitive, with current treatments marketed by 
companies that have substantially greater financial resources and marketing expertise. Our ability to successfully 
compete in the hemophilia market and gain share in this market may be adversely affected due to a number of 
reasons, including:

•  difficulty in penetrating this market if our therapies are not regarded as offering significant benefits over current 

treatments;

• 

the introduction by other companies of longer-lasting or more efficacious, safer, less expensive or more 
convenient treatments than our therapies; 

•  our limited marketing experience within the hemophilia treatment market, which may impact our ability to 

develop relationships with the associated medical and scientific community; or

• 

if one of several companies that are working to develop additional treatments for hemophilia obtains marketing 
approval of its treatment in the E.U. before we do, our application for ALPROLIX with the EMA could be barred 
under operation of the EMA’s orphan medicinal product regulation.

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 federal, state or foreign government regulations or private third-party payors' reimbursement 
policies; 

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

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.  

Our ability to set the price for our products can vary 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 adequate prices in a particular country may not only limit the 
marketing of 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 operation, 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. Drug pricing and 

other health care costs continue to be subject to intense political and societal pressures which we anticipate will 
continue and escalate on a global basis. 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.  

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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 and enactments to reform health care 
insurance programs could significantly influence the manner in which our products are prescribed and purchased. For 
example, provisions of the Patient Protection and Affordable Care Act (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 and the expansion of the number of hospitals eligible for discounts under 
Section 340B of the Public Health Service Act. These changes have had and are expected to continue to have a 
significant impact on our business.

There is also significant economic pressure on state budgets that may result 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 addition, under the PPACA, as states implement their health care marketplaces 
or operate under the federal exchange, the impact on drug manufacturers, including us, will depend in part on the 
formulary and benefit design decisions made by insurance sponsors or plans participating in these programs. It is 
possible that we may need to provide discounts or rebates to such plans in order to maintain favorable formulary 
access for our products for this patient population, which could have an adverse impact on our sales and results of 
operations.

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 constrain 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 to higher-cost 
countries. These measures have negatively impacted our revenues, and may continue to adversely affect our 
revenues and results of operations in the future.

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 and patient confidence in our 
products and our reputation. Any of these could result in liabilities, loss of revenue, 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 (PML), a serious brain infection, 
in the label for certain of our products, may significantly reduce expected revenues for those products and require 
significant expense and management time. 

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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 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 revenue 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 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 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 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 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.

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 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.

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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 extensive current 
Good Clinical Practices. If we or our third-party clinical trial providers or third-party contract research organizations, or 
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 more 
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 substantially 
all 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.

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.

Manufacturing issues could substantially increase our costs, limit supply of our products and 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. 

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•  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 several 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. 

•  Global Bulk Supply Risks. We rely on our manufacturing facilities in Cambridge, Massachusetts, RTP, North 
Carolina and Hillerød, Denmark 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 revenue or market share as patients and physicians turn to competing therapeutics, diminish our profitability 
or damage our reputation. 

We depend on relationships with collaborators and other third-parties for revenue, and the development, regulatory 

approval, commercialization and marketing of certain products, which are outside of our full control.

We rely on a number of significant collaborative relationships for revenue, and the development, regulatory 

approval, commercialization, and marketing of certain of our products and product candidates. Reliance on 
collaborative relationships subjects us to a number of risks, including:

•  we may be unable to control the resources our collaborator devotes to our programs or products;

•  disputes may arise with respect to ownership of rights to technology developed with our collaborator, and the 
underlying contract with our collaborator may fail to provide significant protection or may fail to be effectively 
enforced if the collaborator fails to perform; 

•  our collaborator’s interests may not always be aligned with our interests and a collaborator 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; 

•  collaborations often require the parties to cooperate, and failure to do so effectively could adversely affect 
product sales by our collaborator 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 collaborator to comply with applicable laws and regulatory requirements in the 

marketing, sale and maintenance of the market authorization of our products or to fulfill any responsibilities our 
collaborator 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.

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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.

We may fail to achieve the expected financial and operating benefits of our corporate restructuring and the 

restructuring may harm our business and financial results. 

We face significant risks associated with our corporate restructuring actions that may impair our ability to 
achieve anticipated savings and operational efficiencies or that may otherwise harm our business. These risks 
include loss of workforce capabilities, loss of continuity, decreases in employee focus and morale, attrition of 
necessary or key employees, higher than anticipated separation expenses, litigation and the failure to meet financial 
and operational targets. In addition, the calculation of the anticipated cost savings and other benefits resulting from 
our corporate restructuring actions are subject to many estimates and assumptions. These estimates and 
assumptions are subject to significant business, economic, competitive and other uncertainties and contingencies, 
many of which are beyond our control. If these estimates and assumptions are incorrect or if we experience delays 
or unforeseen events, our business and financial results could be adversely affected. 

Our business may be adversely affected if we do not manage our current growth and 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. The availability of high quality 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.

To manage our current and future potential growth effectively, we need to continue to enhance our operational, 

financial and management processes and to expand, train and manage our employee base. Our growth is also 
dependent upon our ability to attract and retain qualified scientific, information technology, manufacturing, sales and 
marketing and executive personnel and to develop and maintain relationships with qualified clinical researchers and 
key distributors in a highly competitive environment. We may face difficulty in attracting and retaining key talent for a 
number of reasons, such as the underperformance or discontinuation of one or more late stage programs or 
recruitment by competitors.

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 manage our current growth and 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.

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. 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.

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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 greater 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, we along with many other 
pharmaceutical and biotechnology companies 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. These risks may be heightened as we continue to expand our global operations and enter new therapeutic 
areas with different patient populations, which may have product distribution methods differing from those we 
currently utilize. 

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 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; 

• 

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.

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. 
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 adversely affect our business.

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;

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• 

• 

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 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; 

•  collectability of accounts receivable; 

• 

fluctuations in foreign currency exchange rates, in particular the recent strength of the U.S. dollar versus 
foreign currencies which has adversely impacted our revenues and net income; 

•  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 U.K. Bribery Act 2010, and 
elsewhere and escalation of investigations and prosecutions pursuant to such laws; 

•  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 Foreign 

Corrupt Practices Act prohibits U.S. companies and their representatives from offering, promising, authorizing or 
making payments to foreign officials for the purpose of obtaining or retaining business abroad. In many countries, 
the health care professionals we regularly interact with may meet the definition of a foreign government official for 
purposes of the Foreign Corrupt Practices Act. 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 effective tax rate may fluctuate 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. 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.

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In the U.S., there are several proposals under consideration to reform tax law, including proposals that may 

reduce or eliminate the deferral of U.S. income tax on our unrepatriated earnings, penalize certain transfer pricing 
structures, and reduce or eliminate certain foreign or domestic tax credits or deductions. Our future reported 
financial results may be adversely affected by tax law changes which restrict or eliminate certain foreign tax credits 
or our ability to deduct expenses attributable to foreign earnings, or otherwise affect the treatment of our 
unrepatriated earnings.

In addition to U.S. tax reform proposals, 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 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; 

• 

• 

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.

Our revenues are also subject to foreign 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 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.

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 manufacturing capacity to meet our near-term manufacturing 
requirements, it is probable that we would need additional manufacturing capacity to support future clinical and 
commercial manufacturing requirements for product candidates in our pipeline, if such candidates are successful 
and approved. We recently announced our intent to build a biologics manufacturing facility in Solothurn, Switzerland 
and our acquisition of an additional manufacturing facility in RTP, North Carolina. Due to the long lead times 
necessary for the expansion of manufacturing capacity, we expect to incur significant investment to build or expand 
our facilities 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.

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

are 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, are 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 payers do not accept biosimilar products as safe and efficacious products offering a 
more competitive price or other benefit over existing therapies; 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 further 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. If we decide to fully or partially vacate a 
leased property, we may incur significant cost, including lease termination fees, rent expense in excess of sublease 
income and impairment of leasehold improvements. Any of these events may have an adverse impact on our results 
of operations.

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.

Our Board of Directors has approved stock repurchase programs and may approve additional repurchase 
programs in the future. 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 stockholders 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, results of operations, 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.

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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 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 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 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 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.

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, 
thefts of inventory at warehouses, plants or while in-transit, which are not properly stored and which are 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.  

Item  1B.  

Unresolved Staff Comments

None.

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Item  2.  

Properties

Below is a summary of our owned and leased properties as of December 31, 2015.

Massachusetts

In Cambridge, Massachusetts, 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 which total approximately 245,000 square 
feet.

In addition, we lease a total of approximately 1,312,000 square feet in Massachusetts, which is summarized as 

follows:

•  909,000 square feet in Cambridge, Massachusetts, which is comprised of a 67,000 square foot biologics 

manufacturing facility and 842,000 square feet for our corporate headquarters, laboratory and additional office 
space;

•  357,000 square feet of office space in Weston, Massachusetts, of which 175,000 square feet has been 

subleased through the remaining term of our lease agreement; and

•  46,000 square feet of warehouse space in Somerville, Massachusetts.

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

North Carolina

In RTP, North Carolina, we own approximately 834,000 square feet of real estate space, which is summarized 

as follows:

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

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

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

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

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

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

In addition, we lease 188,000 square feet of a facility in RTP, North Carolina from Eisai to manufacture our and 

Eisai's oral solid dose products and 10,000 square feet of warehouse space in Durham, North Carolina. 

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;

•  47,000 square feet of administrative space; and

•  50,000 square feet related to a laboratory facility.

Switzerland

In December 2015, we acquired land in Solothurn, Switzerland, where we plan to build a biologics 

manufacturing facility in the Commune of Luterbach over the next several years.

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Other International

We lease office space in Zug, Switzerland, our international headquarters, the United Kingdom, Germany, 
France, Denmark, and numerous other countries. Our international lease agreements expire at various dates through 
the year 2023.

Item  3.  

Legal Proceedings

For a discussion of legal matters as of December 31, 2015, please read Note 20, 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.

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Table of Contents

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, 2015 and 2014:

First Quarter
Second Quarter
Third Quarter
Fourth Quarter

Common Stock Price

2015

High

480.18 $
432.88 $
412.24 $
311.65 $

$
$
$
$

Low
334.40 $
368.88 $
265.00 $
254.00 $

2014

High

Low

358.89 $
322.25 $
349.00 $
361.93 $

270.62
272.02
298.31
290.85

As of January 29, 2016, there were approximately 742 stockholders 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 May 2015, our Board of Directors authorized a program to repurchase up to $5.0 billion of our common 

stock (2015 Share Repurchase Program). 

The following table summarizes our common stock repurchase activity under our 2015 Share Repurchase 

Program during the fourth quarter of 2015:

Period
October 2015
November 2015
December 2015

Total

Total Number of
Shares Purchased
(#)
4,976,270
2,131,417
—
7,107,687

Average Price
Paid per Share
($)

275.87
295.12
—
281.64

Total Number of
Shares Purchased
as Part of Publicly
Announced  Programs
(#)
4,976,270 $
2,131,417 $
— $

Maximum
Approximate Dollar Value
of Shares That May Yet Be
Purchased Under
Our Programs ($ in 
millions)

629.0
—
—

As of December 31, 2015, the 2015 Share Repurchase Program was completed and 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), which has been used principally to offset common stock 
issuances under our share-based compensation plans. The 2011 Share Repurchase Program does not have an 
expiration date. We did not repurchase any shares of common stock under our 2011 Share Repurchase Program 
during the year ended December 31, 2015 and have approximately 1.3 million shares remaining available for 
repurchase under this authorization.

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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, 2010 with dividends being reinvested. The stock price performance in the graph below is 
not necessarily indicative of future price performance.

2010

2011

2012

2013

2014

2015

Biogen Inc.

NASDAQ Pharmaceutical

S&P 500 Index
NASDAQ Biotechnology

100.00

100.00

100.00
100.00

164.13

107.59

102.11
112.09

218.30

123.00

118.45
148.78

416.96

166.89

156.82
247.01

506.26

203.30

178.28
331.99

456.90

214.35

180.75
371.06

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Table of Contents

Item 6.  

Selected Financial Data

BIOGEN INC. AND SUBSIDIARIES
SELECTED FINANCIAL DATA

(In millions, except per share amounts)
Results of Operations
Product revenues, net
Revenues from unconsolidated joint
business
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.

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.

(In millions)
Financial Condition
Cash, cash equivalents and marketable
securities
Total assets
Notes payable, line of credit and other
financing arrangements, less current
portion
Total Biogen Inc. shareholders’ equity

For the Years Ended December 31,

2015

(3) (4)

2014

2013

(1) (2)

2012

2011

(1)

$

9,188.5 $

8,203.4 $

5,542.3 $

4,166.1 $

3,836.1

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

1,137.9
212.5
5,516.5
3,707.4
46.8
1,855.9
(0.7)

1,855.1
470.6
4.5
1,380.0

46.2
3,547.0 $

6.8
2,934.8 $

$

—

—

1,862.3 $

1,380.0 $

996.6
215.9
5,048.6
3,323.9
—
1,724.7
(13.5)

1,711.2
444.5
—
1,266.7

32.3
1,234.4

$

15.34 $

12.37 $

7.81 $

5.76 $

5.04

231.2

237.2

238.3

239.7

245.0

As of December 31,

2014

2013

2012

2011

2015

(5) (6)

6,188.9 $

$
3,742.4 $
$ 19,504.8 $ 14,314.7 $ 11,863.3 $ 10,130.1 $

1,848.5 $

3,316.0 $

3,107.4
9,049.6

$
$

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

592.4 $
8,620.2 $

687.4 $
6,961.5 $

1,060.8
6,425.5

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 the “Management’s Discussion and 
Analysis of Financial Condition and Results of Operations” sections of this report and our previously filed Form 10-Ks.

(1)  Our share of revenues from unconsolidated joint business reflects charges of $50.0 million in 2011 and $49.7 
million in 2013 for damages and interest awarded to Hoechst in Genentech's arbitration with Hoechst for 
RITUXAN.

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(2)  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 the closing, our collaboration agreement was 
terminated, and we no longer record collaboration profit sharing expense. We recognized collaboration profit 
sharing expense of $85.4 million, $317.9 million and $317.8 million during the years ended December 31, 
2013, 2012 and 2011, respectively. In addition, product and total revenues includes net revenues related to 
sales of TECFIDERA. 

(3)  Other revenues reflects a decrease in royalty revenues due to the December 2014 expiration of U.S. patent 

rights that gave rise to royalty payments related to ANGIOMAX.

(4)  Included in total cost and expenses is a restructuring charge of $93.4 million incurred in connection with our 
corporate restructuring announced on October 21, 2015, which included the termination of certain pipeline 
programs and an 11% reduction in workforce.

(5)  Notes payable, line of credit and other financing arrangements, less current portion reflects the issuance of our 

senior unsecured notes for an aggregate principal amount of $6.0 billion on September 15, 2015.

(6)  Biogen Inc.'s shareholders' equity reflects a reduction in additional paid in capital and retained earnings 

totaling $5.0 billion resulting from the repurchase and retirement of our common stock under our 2015 Share 
Repurchase Program.

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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, manufacturing 
and delivering therapies to patients for the treatment 
of neurodegenerative diseases, hematologic 
conditions and autoimmune disorders.

Our marketed products include TECFIDERA, 

AVONEX, PLEGRIDY, TYSABRI and FAMPYRA for 
multiple sclerosis (MS), ELOCTATE for hemophilia A 
and ALPROLIX for hemophilia B, and FUMADERM for 
the treatment of severe plaque psoriasis. We also 
have a collaboration agreement with Genentech, Inc. 
(Genentech), a wholly-owned member of the Roche 
Group, which entitles us to 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 indicated for the treatment of CLL, and other 
potential anti-CD20 therapies.

Our current revenues depend upon continued 

sales of our principal products. We may be 
substantially dependent on sales from our principal 
products for many years, including an increasing 
reliance on sales and growth of TECFIDERA as we 
continue to expand into additional markets. 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 and assets 
originating from our research and development 
efforts, and successful execution of external business 
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 to explore the utility of our existing 
products in treating disorders beyond those currently 
approved in their labels. In addition to our innovative 
drug development efforts, we aim to leverage our 
manufacturing capabilities and scientific expertise to 
extend our mission to improve the lives of patients 
living with serious diseases through the development, 
manufacture and marketing of biosimilars through 

Samsung Bioepis, our joint venture with Samsung 
BioLogics Co. Ltd. (Samsung Biologics).

Financial Highlights

Diluted earnings per share attributable to Biogen 

Inc. were $15.34 for 2015, representing an increase 
of 24.0% over the same period in 2014.

As described below under “Results of 

Operations,” our income from operations for the year 
ended December 31, 2015, reflects the following:

•  Total revenues were $10,763.8 million for 2015, 
representing an increase of 10.9% over the 
same period in 2014.

•  Product revenues, net totaled $9,188.5 million 
for 2015, representing an increase of 12.0% 
over the same period in 2014. This increase was 
driven by a 25.1% increase in worldwide 
TECFIDERA revenues as well as revenue from our 
recent product additions PLEGRIDY, ELOCTATE 
and ALPROLIX, partially offset by a decrease in 
worldwide AVONEX and TYSABRI revenues. In 
addition, product revenues, net for 2015, 
compared to the same period in 2014, were 
negatively impacted by foreign currency exchange 
losses of $388.1 million, partially offset by 
comparative net gains recognized under our 
foreign currency hedging program of $166.3 
million.

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•  Our share of RITUXAN and GAZYVA operating 
profits totaled $1,339.2 million for 2015, 
representing an increase of 12.0% over the 
same period in 2014. This increase was 
primarily due to a 4% increase in U.S. product 
sales of RITUXAN and price increases.

•  Other revenues totaled $236.1 million for 2015, 
representing a decrease of 22.5% from the 
same period in 2014. This decrease was driven 
by a 73.1% decrease in royalty revenues 
primarily due to the expiration of U.S. patent 
rights that gave rise to royalty payments related 
to ANGIOMAX, partially offset by a 47.6% 
increase in corporate partner revenues primarily 
due to an increase in contract manufacturing 
activities.

•  Total cost and expenses totaled $5,872.8 

million for 2015, representing an increase of 
2.2% compared to the same period in 2014. 
This increase was driven by a 6.3% increase in 
research and development expense, a 5.9% 
increase in cost of sales, losses recognized on 
fair value remeasurement of contingent 
consideration as well as the recognition of a 
$93.4 million charge related to our recent 
corporate restructuring. These increases were 
partially offset by a 21.9% decrease in the 
amortization of acquired intangible assets and a 
5.3% decrease in selling, general and 
administrative expenses. 

We generated $3,716.1 million of net cash 
flows from operations for 2015, which were primarily 
driven by earnings. Cash, cash equivalents and 
marketable securities totaled approximately $6,188.9 
million as of December 31, 2015.

On September 15, 2015, we issued senior 
unsecured notes for an aggregate principal amount of 
$6.0 billion.

During the year ended December 31, 2015, we 

repurchased and retired approximately 16.8 million 
shares of common stock at a cost of $5.0 billion 
under our share repurchase programs. 

Restructuring

On October 21, 2015, we announced a 

corporate restructuring, which includes the 
termination of certain pipeline programs and an 11% 
reduction in workforce. For additional information, 
please read Restructuring set forth below in this 
Management's Discussion and Analysis of Financial 
Condition and Results of Operations.

51

Acquisitions

On February 12, 2015, we completed the 

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. For additional information related to this 
transaction, please read Note 2, Acquisitions to our 
consolidated financial statements included in this 
report.

Collaborative and Other Relationships

On July 2, 2015, we announced a collaboration 

and license agreement to develop gene-based 
therapies for multiple ophthalmic diseases with 
Applied Genetic Technologies Corporation (AGTC). 

On September 9, 2015, we announced an 

agreement with Mitsubishi Tanabe Pharma 
Corporation (MTPC) to exclusively license amiselimod 
(MT-1303), a late stage experimental medicine with 
potential in multiple autoimmune indications. 
Amiselimod is an oral compound that targets the 
sphingosine 1-phosphate receptor. 

For additional information related to these 
transactions, please read Note 19, 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. 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 therapeutics or 
biosimilars of existing products and other 
technologies, such as gene therapies. 

In addition, 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.

For additional information related to our 
competition and pricing risks that could negatively 
impact our products, please read the “Risk Factors” 
section of this report.

Table of Contents

Results of Operations

Revenues

Revenues are summarized as follows:

(In millions, except percentages)
Product Revenues:
United States
Rest of world

Total product revenues

Unconsolidated joint business revenues
Other revenues

For the Years Ended
December 31,

2015

2014

2013

% Change

2015 
compared to 
2014

2014 
compared to 
2013

$

6,545.8 $
2,642.7
9,188.5
1,339.2
236.1

5,566.7 $
2,636.7
8,203.4
1,195.4
304.5
9,703.3 $

3,581.0
1,961.3
5,542.3
1,126.0
263.9
6,932.2

17.6 %
0.2 %
12.0 %
12.0 %
(22.5)%
10.9 %

55.5%
34.4%
48.0%
6.2%
15.4%
40.0%

Total revenues

$ 10,763.8 $

Product Revenues

Product revenues are summarized as follows:

(In millions, except percentages)
Multiple Sclerosis:

TECFIDERA
Interferon*
TYSABRI
FAMPYRA
Hemophilia:
ELOCTATE
ALPROLIX

Other product revenues:

FUMADERM

Total product revenues

For the Years Ended
December 31,

2015

2014

2013

% Change

2015 
compared to 
2014

2014 
compared to 
2013

$

3,638.4 $
2,968.7
1,886.1
89.7

2,909.2 $
3,057.6
1,959.5
80.2

876.1
3,005.5
1,526.5
74.0

25.1 %
(2.9)%
(3.7)%
11.8 %

232.1%
1.7%
28.4%
8.4%

319.7
234.5

58.4
76.0

—
—

447.4 %
208.6 %

**
**

51.4
9,188.5 $

62.5
8,203.4 $

60.2
5,542.3

$

(17.8)%
12.0 %

3.8%
48.0%

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

52

 
 
 
 
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Multiple Sclerosis (MS)

TECFIDERA

For 2015 compared to 2014, the increase in 
U.S. TECFIDERA revenues was primarily due to an 
increase in unit sales volume of 13% as TECFIDERA 
penetrated the U.S. market, and increases in gross 
price partially offset by higher discounts and 
allowances. 

For 2014 compared to 2013, the increase in 

U.S. TECFIDERA revenues was primarily due to 
increases in unit sales volume.

For 2015 compared to 2014, the increase in rest 

of world TECFIDERA revenues was primarily due to 
increases in unit sales volume in existing markets 
and in additional markets as we continue to launch 
the product and expand our presence around the 
world. These increases were partially offset by pricing 
reductions in Germany as described below. Rest of 
world TECFIDERA revenues for 2015 compared to 
2014 were negatively impacted by foreign currency 
exchange losses totaling $74.1 million. These foreign 
currency exchange losses were partially offset by 
comparative net gains recognized under our foreign 
currency hedging program totaling $47.5 million. 

For 2014 compared to 2013, rest of world 
TECFIDERA revenues increased as sales in Germany 
began in the first quarter of 2014. 

Under German legislation related to the pricing of 

new drug products introduced in the German market, 
pricing is unregulated for the first 12 months after 
launch. We launched TECFIDERA in Germany in 
February 2014, and our unregulated pricing ended in 
the first quarter of 2015, at which time we began 
recognizing revenue at the fixed price established 
through our negotiations with the German regulatory 
authorities. The negotiated annual price is fixed for 
three years. 

While we continue to see a strong uptake of 
TECFIDERA in newly launched territories, total market 
growth and patient switch rates in our maturing 
markets, such as the U.S. and Germany, have 
returned to historical averages for MS. 

Interferon

AVONEX

For 2015 compared to 2014, the decrease in 

U.S. AVONEX revenues was primarily due to a 
decrease in unit sales volume of 17%, which was 
attributable in part to patients transitioning to 
PLEGRIDY and oral MS therapies, including 
TECFIDERA, partially offset by gross price increases. 

For 2014 compared to 2013, the increase in 

U.S. AVONEX revenues was primarily due to price 
increases, partially offset by a decrease in unit sales 
volume of 10%, which was attributable in part to 
patients transitioning to PLEGRIDY and oral MS 
therapies, including TECFIDERA. 

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For 2015 compared to 2014, the decrease in 

We expect that PLEGRIDY revenues will increase 

rest of world AVONEX revenues was primarily due to a 
decrease in unit sales volume of 11% primarily in 
Europe, attributable to patients transitioning to 
PLEGRIDY and oral MS therapies, including 
TECFIDERA. Rest of world AVONEX revenues for 2015 
compared to 2014, were negatively impacted by 
foreign currency exchange losses of $153.1 million. 
These foreign currency exchange losses were partially 
offset by comparative net gains recognized under our 
foreign currency hedging program of $58.4 million. 

For 2014 compared to 2013, the decrease in 

rest of world AVONEX revenues was due to a 7% 
decrease in unit sales volume in Europe primarily 
attributable to patients transitioning to oral therapies 
including TECFIDERA, partially offset by a 6% increase 
in unit demand in the emerging markets region. Rest 
of world AVONEX revenue for 2014 compared to 2013 
also reflects the negative impact of foreign currency 
exchange rate changes experienced in 2014, partially 
offset by gains recognized in relation to the 
settlement of certain cash flow hedge instruments 
under our foreign currency hedging program. 

We expect that AVONEX revenues will continue 

to decline as a result of competition from our own 
products, including PLEGRIDY and TECFIDERA, and 
other MS therapies.

PLEGRIDY

as PLEGRIDY becomes commercially available in 
additional markets and as patients transition to 
PLEGRIDY from AVONEX and other therapies.

TYSABRI

For 2015 compared to 2014, the increase in 

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

For 2014 compared to 2013, the increase in 
U.S. TYSABRI revenues was primarily due to price 
increases and our recognition, starting in April 2013, 
of 100% of net revenues on TYSABRI in-market sales 
due to our acquisition of the remaining rights to 
TYSABRI from Elan, partially offset by a 4% decrease 
in unit sales volume. 

Based on data reported by Elan for 2013 and 

our sales to third-party customers, total U.S. TYSABRI 
in-market sales were $958.3 million. For 2014 
compared to 2013, the increase in U.S. TYSABRI in-
market sales was primarily due to price increases, 
partially offset by patients transitioning to oral MS 
therapies, including TECFIDERA. 

For 2015 compared to 2014, the increase in 
PLEGRIDY revenues was primarily due to increases in 
unit sales volume. Sales of PLEGRIDY began in the 
E.U. and the U.S. in the third and fourth quarters of 
2014, respectively.

54

Hemophilia

ELOCTATE

For 2015 compared to 2014, the increase in 
ELOCTATE revenues was primarily due to increases in 
unit sales volume. Sales of ELOCTATE in the U.S. and 
Japan began in the third quarter of 2014 and in the 
first quarter of 2015, respectively. 

ALPROLIX

Table of Contents

For 2015 compared to 2014, the decrease in 
rest of world TYSABRI revenues was due to pricing 
reductions in some European countries and the prior 
year recognition of $53.5 million of revenue previously 
deferred in Italy relating to the pricing agreement with 
the Italian National Medicines Agency (Agenzia 
Italiana del Farmaco or AIFA) as discussed below. 
Rest of world TYSABRI revenues for 2015 compared 
to 2014 were negatively impacted by foreign currency 
exchange losses of $136.3 million. These foreign 
currency exchange losses were partially offset by 
comparative net gains recognized under our foreign 
currency hedging program of $45.9 million. 

For 2014 compared to 2013, the increase in 

rest of world TYSABRI revenues was primarily due to 
the recognition of $53.5 million of revenue previously 
deferred in Italy relating to the pricing agreement with 
AIFA as discussed below, volume increases in Europe 
of 10% and in our emerging markets region of 18% 
and a favorable net price in Germany as the 
mandatory rebate percentage was reduced. Rest of 
world TYSABRI revenue for 2014 compared to 2013 
also reflects the negative impact of foreign currency 
exchange rate changes experienced in 2014, partially 
offset by gains recognized in relation to the 
settlement of certain cash flow hedge instruments 
under our foreign currency hedging program. 

We remain in discussions with AIFA about a 
resolution relating to a claim that sales of TYSABRI in 
Italy exceeded a reimbursement limit established 
pursuant to a Price Determination Resolution granted 
by AIFA in December 2006 for the period from mid-
February 2009 through January 2013. We could 
recognize approximately EUR40 million in revenue 
upon resolution of this matter. For information 
regarding our agreement with AIFA relating to sales of 
TYSABRI in Italy, please read Note 17, Other 
Consolidated Financial Statement Detail to our 
consolidated financial statements included in this 
report.

We expect that TYSABRI revenues will continue 

to face competition from additional treatments for MS 
and certain other pipeline products, including 
ZINBRYTA and ocrelizumab.

For 2015 compared to 2014, the increase in 
ALPROLIX revenues was primarily due to increases in 
unit sales volume. Sales of ALPROLIX in the U.S. and 
Japan began in the second and fourth quarters of 
2014, respectively.

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Table of Contents

We expect continued growth with ELOCTATE as 

Biogen’s Share of Pre-tax Profits in the U.S. for 

there remains a significant portion of the patient 
population that can benefit from long-acting therapies. 
We also expect moderating patient additions for 
ALPROLIX.

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.:

Unconsolidated Joint Business Revenues

Revenues from unconsolidated joint business are 

summarized as follows:

*Biogen's share of pre-tax profits includes the reimbursement of 
selling and development expenses.

(In millions)
Product
revenues, net
Cost and
expenses
Pre-tax profits in
the U.S.
Biogen's share of
pre-tax profits*

For the Years Ended
December 31,

2015

2014

2013

$3,847.9 $3,556.6 $3,425.8

673.7

771.1

615.9

$3,174.2 $2,785.5 $2,809.9

$1,269.8 $1,117.1 $1,087.3

For 2015 compared to 2014, the increase in 

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

For 2014 compared to 2013, the increase in 

U.S. product revenues was primarily due to price 
increases and an increase in RITUXAN unit sales 
volume, partially offset by the 2013 recognition of 
$94.9 million in net revenues resulting from the July 
2013 issuance by the Department of Health and 
Human Services of its final rule on the Exclusion of 
Orphan Drugs for Certain Covered Entities Under 
340B Program. The issuance of the final rule by the 
Department of Health and Human Services did not 
have an impact on the amount we recorded as 
revenues from unconsolidated joint business in our 
consolidated statements of income because, through 
June 30, 2013, we had been increasing our share of 
profits in the U.S. to reflect our interpretation of the 
proposed 340B rule. The final rule was consistent 
with our prior interpretation. 

Collaboration costs and expenses for 2015 
compared to 2014 decreased primarily due to the 
2014 recognition of $53.9 million of additional 
Branded Pharmaceutical Drug (BPD) fee expense as 
well as lower RITUXAN cost of sales, partially offset by 
higher GAZYVA sales and marketing expenses. During 
2014 the Internal Revenue Service issued final 
regulations related to the BPD fee, which had the 
effect of changing the recognition of the fee for 
accounting purposes, from the period in which the fee 
was paid, to the period when the sale occurs. As a 
result of these final regulations, we recognized an 
incremental BPD fee in 2014 for the periods 2013 
through the end of the third quarter of 2014. The final 
regulations did not change the timing of payments.

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Collaboration costs and expenses for 2014 
compared to 2013 increased primarily due to the 
recognition of $53.9 million of additional BPD fee 
expense, as discussed above, as well as GAZYVA 
sales and marketing and research and development 
expenses. Upon the first marketing approval of 
GAZYVA by the FDA in the U.S., we began recognizing 
all activity, including sales and marketing and 
research and development expenses related to the 
GAZYVA program in unconsolidated joint business in 
our consolidated statements of income. Prior to its 
first regulatory approval, we recognized our share of 
GAZYVA development and commercialization 
expenses as research and development expense and 
selling, general and administrative expense, 
respectively, in our consolidated statements of 
income. 

We expect our share of RITUXAN pre-tax profits 

in the U.S. to decrease to 39% from 40% if GAZYVA is 
approved by the FDA in RITUXAN-refractory indolent 
non-Hodgkin’s lymphoma. For additional information 
related to our collaboration with Genentech, including 
information regarding the pre-tax profit sharing 
formula and its impact on future unconsolidated joint 
business revenues, please read Note 19, 
Collaborative and Other Relationships to our 
consolidated financial statements included in this 
report.

Revenue on Sales in the Rest of World for RITUXAN

Revenue on sales in the rest of world for 

RITUXAN consists of our share of pre-tax co-promotion 
profits on RITUXAN in Canada and royalty revenue on 
sales outside the U.S. and Canada. For 2015 
compared to 2014, revenue on sales in the rest of 
world for RITUXAN decreased as a result of lower pre-
tax co-promotion profits on RITUXAN in Canada and 
patent expirations. 

For 2014 compared to 2013, revenue on sales 

in the rest of world for RITUXAN increased primarily 
due to the prior year recognition of a $41.2 million 
charge for damages and interest awarded to Hoechst 
in its arbitration with Genentech. 

The royalty period for sales in the rest of world is 

11 years from the first commercial sale of such 
product on a country-by-country basis. The royalty 
periods for the substantial portion of the royalty-
bearing sales in the rest of world markets expired 
during 2012 and 2013. We expect future revenue on 
sales of RITUXAN in the rest of world will be limited to 
our share of pre-tax co-promotion profits in Canada.

Other Revenues

Royalty Revenues

We receive royalties from net sales on products 
related to patents that we have out-licensed. Prior to 
2015, our most significant source of royalty revenue 
had been derived from net worldwide sales of 
ANGIOMAX, which was out-licensed to The Medicines 
Company. On December 15, 2014 we ceased 
recognizing royalty revenues from U.S. sales of 
ANGIOMAX, contemporaneous with the U.S. patent’s 
expiration.

For 2015 compared to 2014, royalty revenues 

decreased primarily due to the expiration of U.S. 
patent rights that gave rise to royalty payments 
related to ANGIOMAX.

For 2014 compared to 2013, royalty revenues 

decreased due to a decrease in the net worldwide 
sales of ANGIOMAX subject to royalty payments. 

Corporate Partner Revenues

Our corporate partner revenues include amounts 

earned under contract manufacturing agreements, 
including revenues related to our arrangements with 
Samsung Bioepis and other strategic partners.

For 2015 compared to 2014, the increase in 

corporate partner revenues was primarily due to 
higher contract manufacturing revenue and the start 
of product shipments to Sobi in relation to our 
collaboration agreement as Sobi has assumed final 
development and commercialization of ALPROLIX and 
ELOCTATE in Europe, North Africa, Russia, and certain 
markets in the Middle East.

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Table of Contents

For 2014 compared to 2013, the increase in 

corporate partner revenues was primarily due to 
higher contract manufacturing revenue and increased 
revenue from our biosimilar arrangements, partially 
offset by lower revenue associated with our Zevalin 
supply agreement. Zevalin is a program we sold in 
2007 but continued to manufacture in accordance 
with the amendment to our Zevalin supply agreement. 
We completed our manufacturing obligation under this 
amendment in the third quarter of 2014. 

For additional information on our relationships 

with Samsung Bioepis and Sobi, please read Note 19, 
Collaborative and Other Relationships to our 
consolidated financial statements included in this 
report. 

Reserves for Discounts and Allowances

Revenues from product sales are recorded net 

of applicable discounts, allowances and other 
governmental allowances including those associated 
with the implementation of pricing actions in certain 
international markets where we operate.

Reserves established for these discounts and 
allowances 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). These reserves are based on 
estimates of the amounts earned or to be claimed on 
the related sales. Our estimates take into 
consideration our historical experience, current 
contractual and statutory requirements, specific 
known market events and trends, 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 same the period. To 
date, such adjustments have not been significant.

Reserves for discounts, contractual adjustments 

and returns that reduced gross product revenues are 
summarized as follows:

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Table of Contents

Reserves for discounts and allowances 
increased in each of the past three years due to 
increased sales associated with launches of 
TECFIDERA, PLEGRIDY, ELOCTATE and ALPROLIX. In 
addition, we began recognizing reserves for discounts 
and allowances for U.S. TYSABRI revenue in the 
second quarter of 2013 following our acquisition of all 
remaining rights to TYSABRI from Elan.

Discounts

Discounts include trade term discounts and 

wholesaler incentives. 

For 2015 compared to 2014, the increase in 

discounts was primarily driven by our recent product 
additions, gross price increases as well as increases 
in contractual rates. 

For 2014 compared to 2013, the increase in 

discounts was primarily driven by our recent product 
additions. 

Contractual Adjustments

Contractual adjustments relate to Medicaid and 

managed care rebates, co-payment assistance 
(copay), Veterans Administration (VA), Public Health 
Service (PHS) discounts, specialty pharmacy program 
fees and other government rebates or applicable 
allowances. 

For 2015 compared to 2014, the increase in 

contractual adjustments was primarily due to our 
recent product additions, higher Medicaid and other 
governmental rebates and allowances in the U.S., and 
managed care rebates as a result of an increase in 
contracted business and gross prices.

Cost and Expenses

A summary of total cost and expenses is as follows:

For 2014 compared to 2013, the increase in 

contractual adjustments was primarily due to our 
recent product additions, increases in managed care 
rebates, U.S. governmental rebates and allowances 
as a result of price increases and additional managed 
care contracts. 

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. Reserves for product returns are 
recorded in the period the related revenue is 
recognized, resulting in a reduction to product sales. 

For 2015 compared to 2014, return reserves 

decreased primarily due to a reduction in return rates 
based on recent experiences of returned products.

For 2014 compared to 2013, return reserves 

increased primarily due to our acquisition of all 
remaining rights to TYSABRI, the start of commercial 
sales of TECFIDERA and increased return rates for 
prior year AVONEX shipments. 

For additional information related to our 

reserves, please read Note 4, Reserves for Discounts 
and Allowances to our consolidated financial 
statements included in this report.

(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
Restructuring charges
Collaboration profit sharing
(Gain) loss on fair value remeasurement
of contingent consideration

Total cost and expenses

For the Years Ended
December 31,

2015

2014

2013

% Change

2015 
compared to 
2014

2014 
compared to 
2013

$

1,240.4 $
2,012.8
2,113.1

1,171.0 $
1,893.4
2,232.3

857.7
1,444.1
1,712.1

382.6
93.4
—

489.8
—
—

342.9
—
85.4

5.9 %
6.3 %
(5.3)%

(21.9)%
**
**

36.5 %
31.1 %
30.4 %

42.8 %
**
(100.0)%

30.5
5,872.8 $

(38.9)
5,747.7 $

(0.5)
4,441.6

$

(178.4)%
2.2 %

**
29.4 %

** Percentage not meaningful.

59

 
 
Table of Contents

Cost of Sales, Excluding Amortization of Acquired 

For 2014 compared to 2013, the increase in 

Intangible Assets (Cost of Sales)

royalty cost of sales was primarily driven by our 
acquisition of all remaining rights to TYSABRI, partially 
offset by the expiration of a third-party royalty related 
to AVONEX. 

Research and Development

Product Cost of Sales

For 2015 compared to 2014, the increase in 

product cost of sales was primarily driven by 
increased contract manufacturing production and 
higher unit sales volume of our marketed products, 
including newly launched products. 

For 2014 compared to 2013, the increase in 

product cost of sales was driven by higher unit sales 
volume, including due to recent product launches and 
our contract and biosimilars manufacturing 
arrangements. 

Inventory amounts written down as a result of 

excess, obsolescence, unmarketability or other 
reasons totaled $41.9 million, $50.6 million, and 
$47.3 million for the years ended December 31, 
2015, 2014, and 2013, respectively.

Royalty Cost of Sales

For 2015 compared to 2014, the increase in 

royalty cost of sales was primarily driven by the 
increase in royalties due to Sobi on increased sales 
of our hemophilia products and an increase in the 
contractual rate of TYSABRI contingent payments due 
to Perrigo Company plc (Perrigo), which is based on 
the expected level of annual worldwide net sales of 
TYSABRI, partially offset by a decrease in TYSABRI 
revenues and the expiration of certain third-party 
royalties related to TYSABRI. For additional 
information on the contingent payments due to 
Perrigo, please read Note 2, Acquisitions to our 
consolidated financial statements included in this 
report.

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Table of Contents

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. Other 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 and other 
facility-based expenses. 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 2015 compared to 2014, the increase in 
research and development expense was primarily 
related to increases in costs incurred in connection 
with our late and early stage programs and research 
and discovery, partially offset by a decrease in 
milestone and upfront expenses and the positive 
impact of foreign currency translation of $34.0 
million.

The increase in spending associated with our 

late stage programs for 2015 compared to 2014 was 
primarily driven by costs incurred to advance our 
aducanumab program for Alzheimer's disease and the 
nusinersen program for the treatment of SMA, 
partially offset by a decrease in costs related to 
ZINBRYTA, which is in registration stage, and the 
approvals of PLEGRIDY and ELOCTATE in 2014.

The increase in spending associated with our 
early stage programs for 2015 compared to 2014 
was primarily due to costs incurred in connection with 
our aducanumab program for Alzheimer's disease, 
which advanced to a late stage program during the 
third quarter of 2015, the BAN2401 program for 
Alzheimer’s disease related to our collaboration with 
Eisai and our Raxatrigine program for trigeminal 
neuralgia (TGN). These increases were partially offset 
by a decrease in costs incurred in connection with the 
nusinersen program for the treatment of SMA as the 
program advanced to a late stage program during the 
first quarter of 2015.

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For 2014 compared to 2013, the increase in 
research and development expense was primarily 
related to increases in costs incurred in connection 
with our early stage programs, milestone and upfront 
expenses, research and discovery and marketed 
products, partially offset by a decrease in costs 
incurred in connection with our late stage programs.

Research and development expense related to 

our early stage programs increased in 2014 
compared to 2013 primarily due to costs incurred in 
the advancement of our Anti-LINGO program in MS, 
our aducanumab program for Alzheimer’s disease, the 
BAN2401 program for Alzheimer’s disease related to 
our collaboration agreement with Eisai and an 
increase in spending incurred in connection with our 
development of STX-100 for the treatment of 
idiopathic pulmonary fibrosis. 

The increase in spending associated with 

marketed products in 2014 compared to 2013 is 
related to ALPROLIX, ELOCTATE and PLEGRIDY, which 
were approved in 2014, and costs associated with 
TYSABRI, which previously were shared with Elan prior 
to our acquisition of all remaining rights to TYSABRI 
from Elan in April 2013. 

The decrease in spending associated with our 
late stage product candidates in 2014 compared to 
2013 was driven by approvals of ALPROLIX, ELOCTATE 
and PLEGRIDY in 2014 and GAZYVA in the fourth 
quarter of 2013, partially offset by costs incurred in 
the development of nusinersen for the treatment of 
SMA. 

We intend to continue committing significant 

resources to targeted research and development 
opportunities where there is a significant unmet need 
and where the drug candidate has the potential to be 
highly differentiated. Specifically, we intend to 
continue to invest in our MS pipeline, our 
aducanumab program, the BAN2401 and E2609 
programs, the nusinersen program, the amiselimod 
program and our Raxatrigine program.

Milestone and Upfront Expenses included in 

Research and Development Expense

Research and development expense for 2015 
includes $60.0 million recorded upon entering into 
our collaboration with MTPC, $48.1 million recorded 
upon entering into our collaboration with AGTC, $30.0 
million recorded as milestones 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 the year. For additional 
information about these transactions, please read 
Note 19, Collaborative and Other Relationships to our 
consolidated financial statements included in this 
report. 

Research and development expense for 2014 
includes $139.3 million recorded in connection with 
our collaboration agreement with Eisai, $25.0 million 
recorded as milestones in relation to our collaboration 
agreements with Ionis and an aggregate of $60.0 
million related to upfront payments made to Sangamo 
and Google Inc. and for other strategic business 
arrangements. 

Included in total research and development 

expense in 2013 were charges of $75.0 million 
related to an upfront payment made to Ionis in 
September 2013 upon entering into a six year 
research collaboration with Ionis under which we both 
agreed to perform research and then seek to develop 
and commercialize antisense or other therapeutics for 
the treatment of neurological disorders, $36.0 million 
related to upfront and milestone payments made to 
Samsung Bioepis in December 2013 upon entering 
into a development and commercialization agreement 
and a $10.0 million milestone payment made to Ionis 
related to the selection and advancement of IONIS-
DMPKRx to treat mytonic dystrophy (DM1). 

These payments are classified as research and 
development expense as the programs they relate to 
have not achieved regulatory approval. 

Selling, General and Administrative

For 2015 compared to 2014, the decrease in 

selling, general and administrative expenses was 
driven by a decrease in corporate giving, incentive 
compensation and the positive impact of foreign 
currency translation of $87.6 million, partially offset 
by an increase of $38.9 million of BPD fee expense. 

For 2014 compared to 2013, the increase in 
selling, general and administrative expenses was 
primarily driven by costs associated with developing 
commercial capabilities for our recent product 
launches in 2014 along with an increase in sales and 
marketing activities in support of our MS products. 
The successful commercialization of new and 
potential new products requires significant 
investments, such as sales force build and 

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development, training, marketing, and other related 
activities. The increase in selling, general, and 
administrative expense was also driven by an 
increase in corporate giving and the recognition of 
$21.9 million of additional BPD fee expense. 

Our most recent long range planning cycle was 
completed in the third quarter of 2015. Based upon 
this analysis,the estimated future amortization of 
acquired intangible assets is expected to be as 
follows:

Amortization of Acquired Intangible Assets

Our amortization expense is based on the 
economic consumption of intangible assets. Our most 
significant intangible assets are related to our 
AVONEX and TYSABRI products. Annually, during our 
long-range planning cycle, we perform an analysis of 
anticipated lifetime revenues of AVONEX and 
TYSABRI. This analysis is also updated whenever 
events or changes in circumstances would 
significantly affect the anticipated lifetime revenues of 
either product.

For 2015 compared to 2014, the decrease in 

amortization of acquired intangible assets was 
primarily driven by a decrease in AVONEX revenues 
during the comparative periods and the impact of 
higher expected lifetime revenues of AVONEX due to a 
slower than previously expected adoption of 
PLEGRIDY. Amortization of acquired intangible assets 
during 2014 included total impairment charges of 
$50.9 million related to one of our out-licensed 
patents and one of our in-process research and 
development (IPR&D) intangible assets.

For 2014 compared to 2013, the change in 

amortization of acquired intangible assets was 
primarily driven by a $60.2 million increase in 
amortization of acquired and in-licensed rights and 
patents as we recognized a full year of expense 
related to our TYSABRI rights in 2014 versus nine 
months of expense in 2013, total impairment charges 
of $50.9 million related to one of our out-licensed 
patents and one of our IPR&D intangible assets, and 
lower expected lifetime revenues of AVONEX. 

(In millions)

2016

2017

2018

2019

2020

Total

As of December 31,
2015

$

346.4

318.6

291.0

275.1

269.1

$

1,500.2

We monitor events and expectations regarding 

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 process. 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 additional information related to the 
amortization of acquired intangible assets, please 
read Note 6, Intangible Assets and Goodwill to our 
consolidated financial statements included in this 
report.

Impairment of Intangible Assets

We record charges associated with impairments 

of intangible assets in amortization of intangible 
assets. Impairment charges related to our intangible 
assets during 2015 and 2013 were insignificant. 

During 2014, we recorded a charge of $34.7 
million related to the impairment of one of our out-
licensed patents to reflect a change in its estimated 
fair value, due to a change in the underlying 
competitive market for that product. 

During 2014, we updated the probabilities of 

success related to the early stage programs acquired 
through our recent acquisitions. This change in 
probability of success, combined with a delay in one 
of the projects, resulted in an impairment loss of 
$16.2 million. 

For additional information, please read Note 6, 

Intangible Assets and Goodwill to our consolidated 
financial statements included in this report.

63

We expect to reinvest the savings resulting from 

the restructuring to support the advancement of our 
high potential pipeline candidates, including our 
programs in Alzheimer’s disease, Anti-LINGO for MS, 
nusinersen for SMA, Raxatrigine and amiselimod, an 
oral S1P modulator, and to support key commercial 
activities, including TECFIDERA. We also have 
discontinued several programs, including our Phase 3 
program for TECFIDERA in secondary progressive MS 
(SPMS), the development of anti-TWEAK in lupus 
nephritis, and certain activities in immunology and 
fibrosis research. 

We anticipate making cash payments totaling 
approximately $120 million under this program, which 
includes approximately $15.9 million related to 
previously accrued 2015 incentive compensation, for 
a total net expected restructuring charge of $105 
million. These amounts will be substantially incurred 
and paid by the end of 2016. 

We recognized $93.4 million of these charges 

during the fourth quarter of 2015, of which $86.2 
million was related to our workforce reduction and 
$7.2 million was related to the pipeline program 
terminations. 

The following table summarizes the charges and 

spending related to our restructuring efforts during 
2015:

Workforce
Reduction

Pipeline
Programs

Total

(In millions)
Restructuring charges
incurred during the
fourth quarter of 2015 $ 86.2 $
Previously accrued
incentive
compensation
Reserves
established

102.1

15.9

7.2 $ 93.4

—

15.9

7.2

109.3

Amounts paid through
December 31, 2015
Restructuring reserve
as of December 31,
2015

(68.4)

(3.6)

(72.0)

$ 33.7 $

3.6 $ 37.3

Table of Contents

IPR&D

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.

The field of developing treatments for idiopathic 
pulmonary fibrosis (IPF) and neuropathic pain, such as 
TGN, are highly competitive and can be affected by 
rapid changes to the market. There can be no 
assurance that we will be able to successfully develop 
STX-100 for the treatment of IPF or Raxatrigine for the 
treatment of TGN or that a successfully developed 
therapy will be able to secure sufficient pricing in a 
competitive market. 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 that the carrying value of the 
assets might not be recoverable. Our most recent 
impairment assessment as of October 31, 2015 
resulted in no impairments.

Restructuring Charges

On October 21, 2015, we announced a 

corporate restructuring, which includes the 
termination of certain pipeline programs and an 11% 
reduction in workforce. These changes are expected 
to reduce the current annual run rate of operating 
expenses by approximately $250 million. 

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Table of Contents

Collaboration Profit Sharing

(Gain) Loss on Fair Value Remeasurement of 

Contingent Consideration

Upon the closing of our acquisition of all 
remaining rights to TYSABRI, our collaboration 
agreement with Elan was terminated, and we no 
longer record collaboration profit sharing. 
Collaboration profit sharing previously included the 
portion of rest of world net operating profits to be 
shared with Elan under the terms of our collaboration 
agreement for the development, manufacture and 
commercialization of TYSABRI. The amount also 
included the reimbursement for our portion of third-
party royalties paid by Elan on behalf of the 
collaboration relating to rest of world sales. For 
additional information about this collaboration, please 
read Note 19, Collaborative and Other Relationships to 
our consolidated financial statements included in this 
report.

The consideration for certain of our business 

combinations includes future payments that are 
contingent upon the occurrence of a particular factor 
or factors. 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 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.

The gain on fair value remeasurement of 
contingent consideration for 2014 was primarily due 
to an adjustment to the value of our contingent 
consideration liabilities as we updated the 
probabilities of success related to the early stage 
programs acquired through our recent acquisitions. 
For additional information, please read Note 7, Fair 
Value Measurements to our consolidated financial 
statements included in this report.

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Table of Contents

Other Income (Expense), Net

Income Tax Provision

For 2015 compared to 2014, 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 (2015 Senior 
Notes), higher foreign exchange losses and a 
decrease in net gains recognized on the sale of our 
strategic investments and marketable securities. For 
additional information, please read Note 17, Other 
Consolidated Financial Statement Detail, to our 
consolidated financial statements included in this 
report.

For 2014 compared to 2013, the change in other 

income (expense), net was due to lower non-income 
based state taxes, an increase in interest income due 
to higher average cash, cash equivalents and 
marketable securities balances, lower foreign 
exchange losses and decreased interest expense as 
we repaid our 6.0% Senior Notes in March 2013, 
partially offset by lower gains on investments. 

We expect interest expense will continue to 
increase as a result of our issuance of the 2015 
Senior Notes. For additional information related to our 
2015 Senior Notes, please read Note 11, 
Indebtedness, to our consolidated financial 
statements included in this report.

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 variability in the allocation of our taxable 
earnings among multiple jurisdictions, changes in tax 
laws, 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 2015 compared to 

2014 benefited from lower anticipated taxes on 
foreign earnings and reflects a $27.0 million benefit 
from the 2015 remeasurement of one of our 
uncertain tax positions, described below.

Our effective tax rate for 2014 compared to 

2013 increased primarily as a result of the absence 
of a benefit related to the 2013 change in our 
uncertain tax position related to our U.S. federal 
manufacturing deduction and our unconsolidated joint 
business described below under "Accounting for 
Uncertainty in Income Taxes", lower current year 
expenses eligible for the orphan drug credit and a 
lower relative manufacturing deduction due to 
unqualified products, partially offset by a higher 
percentage of our 2014 income being earned outside 
the U.S.

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Table of Contents

Accounting for Uncertainty in Income Taxes

During 2013, we received updated technical 

guidance from the IRS concerning the calculation of 
our U.S. federal manufacturing deduction and overall 
tax classification of our unconsolidated joint business 
for the current and prior year filings. Based on this 
guidance we reevaluated the level of our unrecognized 
benefits related to uncertain tax positions and 
recorded a $49.8 million income tax benefit. This 
benefit was for a previously unrecognized position and 
related to years 2005 through 2012. We recorded an 
offsetting expense of $11.3 million for non-income 
based state taxes, which was recorded in other 
income (expense) in our consolidated statements of 
income. This uncertain tax position was then 
remeasured in 2015 resulting in a $27.0 million 
benefit related to the state tax impacts of the IRS 
technical guidance.

For more information on our uncertain tax 
positions and income tax rate reconciliation for 2015, 
2014 and 2013, please read Note 16, Income Taxes 
to our consolidated financial statements included in 
this report.

Share in Equity in Loss of Investee, Net of 
Tax

For 2015 compared to 2014, the decrease in 
our equity in loss of investee, net of tax, was due to 
the suspension of equity method investment losses 
due to our share of losses exceeding the carrying 
value of our investment in 2015 and a decrease in 
our ownership interest. 

For 2014 compared to 2013, the decrease in 
equity in loss of investee, net of tax was due to the 
joint venture's clinical trial activity, partially offset by 
our recognition of a gain as Samsung Bioepis secured 
additional equity financing from Samsung Biologics 
from a financing in which we did participate. 

For additional information related to this 
transaction, please read Note 19, Collaborative and 
Other Relationships to our consolidated financial 
statements included in this report.

Noncontrolling Interest

For 2015 compared to 2014, the change in net 
income (loss) attributable to noncontrolling interests, 
net of tax, was primarily related to a $60.0 million 
milestone payment made to Neurimmune SubOne AG 
(Neurimmune), partially offset by increases in 
research expenses attributable to noncontrolling 
interests.

For 2014 compared to 2013, the change in net 
income attributable to noncontrolling interests, net of 
tax, was related to a $10.0 million milestone payment 
made to Neurimmune and the consolidation of the 
research activities of Ataxion, Inc. 

For additional information about Neurimmune, 

please read Note 18, Investments in Variable Interest 
Entities to our consolidated financial statements 
included in this report.

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 suspended 
recognizing additional losses and will continue to do 
so unless we commit to providing additional funding. 

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Table of Contents

Financial Condition, Liquidity and Capital Resources

Our financial condition is summarized as follows:

(In millions, except percentages)
Financial assets:

Cash and cash equivalents
Marketable securities — current
Marketable securities — non-current

Total cash, cash equivalents and marketable securities

Borrowings:

Current portion of notes payable and other financing
arrangements
Notes payable and other financing arrangements

Total borrowings

Working Capital:
Current assets
Current liabilities

Total working capital

As of December 31,

2015

2014

% Change

2015 
compared to 
2014

$

$

$

$

$

$

1,308.0 $
2,120.5
2,760.4
6,188.9 $

1,204.9
640.5
1,470.7
3,316.0

4.8 $

6,521.5
6,526.3 $

3.1
580.3
583.4

6,700.3 $
(2,577.7)
4,122.6 $

4,535.0
(2,218.1)
2,316.9

8.6%
231.1%
87.7%
86.6%

54.8%
**
**

47.7%
16.2%
77.9%

** Percentage not meaningful.

For the year ended December 31, 2015, certain 

For the year ended December 31, 2014, certain 

significant cash flows were as follows:

significant cash flows were as follows:

•  $5,930.5 million in proceeds from the issuance 

•  $2,942.1 million in net cash flows provided by 

of our 2015 Senior Notes;

operating activities;

•  $3,716.1 million in net cash flows provided by 

•  $1,163.2 million in total payments for income 

operating activities;

taxes;

•  $5.0 billion used for share repurchases;

•  $886.8 million used for share repurchases;

•  $375.0 million in contingent payments made to 
former shareholders of Fumapharm AG and 
holders of their rights; 

•  $287.8 million used for purchases of property, 

plant and equipment; and

•  $286.3 million used for upfront and milestone 

payments in collaborative arrangements.

•  $1,674.8 million in total payments for income 

taxes;

•  $850.0 million in contingent payments made to 
former shareholders of Fumapharm AG and 
holders of their rights; 

•  $643.0 million used for purchases of property, 
plant and equipment, including $104.8 million 
related to the acquisition of Eisai's drug product 
manufacturing facility in Research Triangle Park 
(RTP), North Carolina and $62.5 million related 
to the acquisition of land in Solothurn, 
Switzerland;

•  $198.8 million net cash paid for the acquisition 

of Convergence;

•  $184.0 million used for upfront payments made 

to AGTC and MTPC; and

•  $60.0 million milestone payment made to 

Neurimmune.

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Table of Contents

Overview

Share Repurchase Programs

We have historically financed our operating and 

In May 2015, our Board of Directors authorized 

capital expenditures primarily through cash flows 
earned through our operations. On September 15, 
2015, we issued our 2015 Senior Notes for an 
aggregate principal amount of $6.0 billion. 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 
and proceeds received from our 2015 Senior Notes. 
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.

The undistributed cumulative foreign earnings of 

certain of our foreign subsidiaries, exclusive of 
earnings that would result in little or no net income 
tax expense under current U.S. tax law or which has 
already been subject to tax under U.S. tax law, are 
invested indefinitely outside the U.S. 

Of the total cash, cash equivalents and 

marketable securities at December 31, 2015, 
approximately $3.5 billion was generated in foreign 
jurisdictions and is primarily intended for use in our 
foreign operations or in connection with business 
development transactions outside of the U.S. In 
managing our day-to-day liquidity in the U.S., we do 
not rely on the unrepatriated earnings as a source of 
funds and we have not provided for U.S. federal or 
state income taxes on these undistributed foreign 
earnings. 

For additional information related to certain risks 

that could negatively impact our financial position or 
future results of operations, please read the “Risk 
Factors” and “Quantitative and Qualitative Disclosures 
About Market Risk” sections of this report.

a program to repurchase up to $5.0 billion of our 
common stock (2015 Share Repurchase Program). As 
of December 31, 2015, the 2015 Share Repurchase 
Program was completed and 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 
of our common stock (2011 Share Repurchase 
Program), which has been used principally to offset 
common stock issuances under our share-based 
compensation plans. The 2011 Share Repurchase 
Program does not have an expiration date. During 
2014, we purchased approximately 2.9 million shares 
of common stock at a cost of $886.8 million under 
our 2011 Share Repurchase Program. We did not 
repurchase any shares of common stock under our 
2011 Share Repurchase Program during the year 
ended December 31, 2015 and have approximately 
1.3 million shares remaining available for repurchase 
under this authorization.

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 
portfolio that limits the amount of exposure as to 
institution, maturity, and investment type. 

The increase in cash, cash equivalents and 

marketable securities at December 31, 2015 from 
December 31, 2014 is primarily due to the issuance 
of our 2015 Senior Notes and net cash flows provided 
by operating activities, offset by purchases of our 
common stock, contingent payments made to former 
shareholders of Fumapharm AG and holders of their 
rights, net purchases of property, plant and equipment 
and the acquisition of Convergence.

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Table of Contents

Borrowings

On September 15, 2015, we issued senior 
unsecured notes for an aggregate principal amount of 
$6.0 billion, consisting of the following:

For a summary of the fair values of our 

outstanding borrowings as of December 31, 2015 and 
2014, please read Note 7, Fair Value Measurements 
to our consolidated financial statements included in 
this report.

•  $1.5 billion of 2.90% Senior Notes due 

September 15, 2020, valued at 99.792% of par;

Working Capital

We define working capital as current assets less 

current liabilities. In accordance with ASU No. 
2015-17, at December 31, 2015 we reclassified 
$137.1 million of our deferred tax assets classified 
as current to noncurrent and $1.6 million of our 
deferred tax liabilities classified as current to 
noncurrent in our December 31, 2014 consolidated 
balance sheet, to conform our prior year presentation 
to our current year presentation. For additional 
information related to ASU No. 2015-17, please read 
Note 1, Summary of Significant Accounting Policies: 
New Accounting Pronouncements to our consolidated 
financial statements included in this report.

The increase in working capital at December 31, 

2015 from December 31, 2014 reflects an increase 
in total current assets of $2,165.3 million, partially 
offset by an increase in current liabilities of $359.6 
million. The increase in total current assets was 
primarily driven by an increase in cash, cash 
equivalents and marketable securities due to the 
issuance of our 2015 Senior Notes and an increase 
in cash from operating activities, partially offset by 
purchases of our common stock. The increase in total 
current liabilities primarily resulted from an increase 
in taxes payable and an increase in accrued expenses 
and other due to increases in the amount of short-
term contingent consideration expected to be paid 
and revenue-related reserves for discounts and 
allowances.  

•  $1.0 billion of 3.625% Senior Notes due 

September 15, 2022, valued at 99.920% of par;

•  $1.75 billion of 4.05% Senior Notes due 

September 15, 2025, valued at 99.764% of par; 
and

•  $1.75 billion of 5.20% Senior Notes due 

September 15, 2045, valued at 99.294% of par.

In addition to the 2015 Senior Notes, we have 

$550.0 million aggregate principal amount of 6.875% 
Senior Notes due March 1, 2018 that were originally 
priced at 99.184% of par. 

The discounts are amortized as additional 
interest expense over the period from issuance 
through maturity.

In August 2015, we entered into a $1.0 billion, 
5-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, 
2015, 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 which were payable to 
Fumedica in varying amounts from June 2008 through 
June 2018. Our remaining note payable to Fumedica 
had a carrying value of 8.9 million Swiss Francs ($9.0 
million) and 11.6 million Swiss Francs ($11.7 million) 
as of December 31, 2015 and 2014, respectively.

Cash Flows

The following table summarizes our cash flow activity:

(In millions, except percentages)
Net cash flows provided by operating
activities
Net cash flows used in by investing
activities
Net cash flows provided by (used in)
financing activities

$

$

$

For the Years Ended
December 31,

2015

2014

2013

% Change

2015 
compared to 
2014

2014 
compared to 
2013

3,716.1 $

2,942.1 $

2,345.1

26.3 %

25.5 %

(4,553.6) $

(1,543.0) $

(1,604.7)

195.1 %

(3.8)%

986.4 $

(755.9) $

(716.5)

(230.5)%

5.5 %

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Table of Contents

Operating Activities

Investing Activities

Cash flows from operating activities represent 

For 2015 compared to 2014, the increase in net 

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 and share-
based compensation charges;

•  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 2015 compared to 2014, the increase in 
cash provided by operating activities was primarily 
driven by higher net income and accounts receivable 
collections, partially offset by income tax payments.

For 2014 compared to 2013, the increase in 
cash provided by operating activities was primarily 
driven by higher net income, partially offset by an 
increase in accounts receivable resulting from 
increased product revenue.

cash flows used in investing activities was primarily 
due to an increase in net purchases of marketable 
securities, an increase in the total amount of 
contingent consideration paid to the former 
shareholders of Fumapharm AG, an increase in 
purchases of property, plant and equipment and cash 
paid for the acquisition of Convergence. 

For 2014 compared to 2013, the decrease in 

net cash flows used in investing activities was 
primarily due to the prior year acquisition of all 
remaining rights to TYSABRI from Elan and a decrease 
in the net purchases of marketable securities, 
partially offset by the payment of contingent 
consideration to former shareholders of Fumapharm 
AG. 

Financing Activities

For 2015 compared to 2014, the change in net 

cash flows provided by financing activities was 
primarily due to the issuance of our 2015 Senior 
Notes, partially offset by an increase in the amount of 
common stock we repurchased.

For 2014 compared to 2013, the increase in net 

cash flows used in financing activities was primarily 
due to an increase in the amount of common stock 
we repurchased, partially offset by the prior year 
repayment of the aggregate principal amount of our 
6.0% Senior Notes.

Contractual Obligations and Off-Balance Sheet Arrangements

Contractual Obligations

The following table summarizes our contractual obligations as of December 31, 2015, 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.

Payments Due by Period

Total

Less than
1 Year

1 to 3
Years

3 to 5
Years

After
5 Years

$

20.7 $

2.0 $

18.7 $

— $

69.9
282.6
258.5
—
611.0 $

131.3
1,095.9
79.4
—

117.3
1,983.3
24.0
—

1,306.6 $

2,124.6 $

—
353.8
7,201.9
19.0
70.1
7,644.8

(In millions)
Capital leases (1)
Non-cancellable operating leases (2), (3)
Long-term debt obligations (4)
Purchase and other obligations (5)
Defined benefit obligation

672.3
10,563.7
380.9
70.1

Total contractual obligations

$ 11,687.0 $

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Table of Contents

(1)  During 2015 we amended our existing lease 
related to Eisai's oral solid dose products 
manufacturing facility in RTP, North Carolina, 
where we manufacture our and Eisai's oral solid 
dose products. Amounts reflected within the 
table above include the future contractual 
commitments. For additional information, please 
read Note 10, Property, Plant and Equipment to 
our consolidated financial statements included 
in this report.

(2)  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. 

(3)  Obligations are presented net of sublease 

income expected to be received for the vacated 
portion of our Weston, Massachusetts facility. 
For additional information, please read Note 10, 
Property, Plant and Equipment to our 
consolidated financial statements included in 
this report.

(4)  Long-term debt obligations are primarily related 
to our Senior Notes, including principal and 
interest payments. 

(5)  Purchase and other obligations primarily includes 

our obligations to purchase direct materials and 
also includes approximately $126.4 million in 
contractual commitments for the construction of 
a biologics manufacturing facility in Solothurn, 
Switzerland and approximately $14.7 million 
related to the fair value of net liabilities on 
derivative contracts.

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, 2015, we have 
approximately $45.4 million of net liabilities 
associated with uncertain tax positions.

Other Funding Commitments

As of December 31, 2015, we have several on-
going clinical studies in various clinical trial stages. 
Our most significant clinical trial expenditures are to 
contract research organizations (CROs). The contracts 
with CROs are generally cancellable, with notice, at 
our option. We have recorded accrued expenses of 
approximately $25.0 million on our consolidated 
balance sheet for expenditures incurred by CROs as 
of December 31, 2015. We have approximately 
$559.0 million in cancellable future commitments 
based on existing CRO contracts as of December 31, 
2015.

Contingent Development, Regulatory and 

Commercial Milestone Payments

Based on our development plans as of 

December 31, 2015, we could make potential future 
milestone payments to third parties of up to 
approximately $2.8 billion 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 had not occurred as of December 31, 
2015, 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. 

We anticipate that we may pay approximately 

$150.0 million of milestone payments in 2016, 
provided various development, regulatory or 
commercial milestones are achieved. 

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 terms of 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 in December 2013. 
Following that acquisition, we began making these 
royalty payments to Perrigo.

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Contingent Consideration related to Business 

We will owe an additional $300.0 million 

Combinations

In connection with our acquisitions of 
Convergence, Stromedix, Inc. (Stromedix), Biogen 
International Neuroscience GmbH (formerly Biogen 
Idec International Neuroscience GmbH) (BIN), Biogen 
Hemophilia Inc. (formerly Biogen Idec Hemophilia Inc.) 
(BIH) and Fumapharm AG, we agreed to make 
additional payments based upon the achievement of 
certain milestone events. 

As the acquisitions of Convergence, Stromedix 

and BIN, formerly Panima Pharmaceuticals AG, 
occurred after January 1, 2009, we record contingent 
consideration liabilities at their fair value on the 
acquisition date and revalue these obligations each 
reporting period. We may pay up to approximately 
$1.3 billion in remaining milestones related to these 
acquisitions. For additional information related to our 
acquisition of Convergence please read Note 2, 
Acquisitions, to our consolidated financial statements 
included in this report.

BIH

In connection with our acquisition of BIH, 
formerly Syntonix, in 2007, we agreed to pay up to an 
additional $80.0 million if certain milestone events 
associated with the development of BIH’s lead 
product, ALPROLIX are achieved. The final $20.0 
million contingent payment will occur if, prior to the 
tenth anniversary of the closing date, a marketing 
authorization is granted by the EMA for ALPROLIX. 
This payment will be accounted for as an increase to 
intangible assets if achieved. In June 2015, the EMA 
validated our MAA for ALPROLIX for the treatment of 
hemophilia B.

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 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 
twelve month period, as defined in the acquisition 
agreement. 

During 2015, we paid $850.0 million in 
contingent payments as we reached the $4.0 billion, 
$5.0 billion and $6.0 billion cumulative sales levels 
related to the Fumapharm Products in the fourth 
quarter of 2014, second quarter of 2015 and third 
quarter of 2015, respectively, and accrued $300.0 
million upon reaching $7.0 billion in total cumulative 
sales of Fumapharm Products in the fourth quarter of 
2015.

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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. 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. 

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, 2015, please read Note 20, 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 
revenue and expenses. Actual results may differ from 
these estimates under different assumptions or 
conditions.

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Revenue Recognition and Related Allowances

Revenues from Unconsolidated Joint Business

We recognize revenue when all of the following 

Revenues from unconsolidated joint business 

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. The timing 
of distributor orders and shipments can cause 
variability in earnings.

Reserves for Discounts and Allowances

We establish reserves for trade term discounts, 

wholesaler incentives, Medicaid rebates, copay, VA 
and PHS discounts, managed care rebates, product 
returns and other governmental rebates or applicable 
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. 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. If actual results vary, we may 
need to adjust these estimates, which could have an 
effect on earnings in the period of the 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.

consists of (i) our share of pre-tax profits and losses 
in the U.S. for RITUXAN and GAZYVA; 
(ii) reimbursement of our selling and development 
expenses in the U.S. for RITUXAN; and (iii) revenue on 
sales in the rest of world for RITUXAN, which consist 
of our share of pre-tax co-promotion profits in Canada 
and royalty revenue on sales outside the U.S. and 
Canada by the Roche Group and its sublicensees. Pre-
tax co-promotion profits on RITUXAN are calculated 
and paid to us by Genentech in the U.S. and by the 
Roche Group in Canada. Pre-tax co-promotion profits 
consist of U.S. and Canadian net sales to third-party 
customers less the cost to manufacture, third-party 
royalty expenses, distribution, selling, and marketing 
expenses, and joint development expenses incurred 
by Genentech, the Roche Group and us. We record our 
share of the pre-tax co-promotion profits on RITUXAN 
in Canada and royalty revenues on sales outside the 
U.S. on a cash basis as we do not have the ability to 
estimate these profits or royalty revenue in the period 
incurred. Additionally, our share of the pre-tax profits 
on RITUXAN and GAZYVA in the U.S. includes 
estimates made by Genentech and those estimates 
are subject to change. Actual results may differ from 
our estimates.

Concentrations of Credit Risk

The majority of our receivables 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 large 
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 long 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.

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To date, we have not experienced any significant 

Acquired Intangible Assets, including In-process 

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 related to our 

concentration of credit risk associated with our 
accounts receivable balances, please read the 
subsection entitled “Credit Risk” in the “Quantitative 
and Qualitative Disclosures About Market Risk” section 
of 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.

Research and Development (IPR&D)

Effective January 1, 2009, 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 on its 
acquisition date. Future costs to develop these 
assets are recorded to research and development 
expense as they are incurred.

We have acquired, and expect to continue to 

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.

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would significantly affect the anticipated lifetime 
revenues of TYSABRI or AVONEX. 

Impairment charges related to our long-lived 
assets during 2015 and 2013 were insignificant. For 
additional information on the impairment charges 
related to our long-lived assets during 2014, please 
read Note 6, Intangible Assets and Goodwill to our 
consolidated financial statements included in this 
report. 

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, then we 
would need to determine the implied fair value of our 
reporting unit’s goodwill. If the carrying value of our 
reporting unit’s goodwill exceeds its implied fair value, 
then we would record an impairment loss equal to the 
difference. 

We completed our required annual impairment 
test in the fourth quarters of 2015, 2014 and 2013, 
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.

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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 at the 
time of the respective acquisition. No assurance can 
be given, however, 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.

Impairment and Amortization of Long-lived Assets 

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 
intangible assets with indefinite lives exceeds its fair 
value, then the intangible asset is written-down to its 
fair value. 

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 relates to 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 
TYSABRI and AVONEX using the economic 
consumption method based on revenue generated 
from the products underlying the related intangible 
assets. An analysis of the anticipated lifetime 
revenues of 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 

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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 7, Fair Value Measurements to 

our consolidated financial statements, 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.

Determining the appropriate valuation model and 

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 
performance 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.

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Contingent Consideration

Income Taxes

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 within the 
consolidated statement 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.

Restructuring Charges

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.

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 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 the 
consolidated statement 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 
discontinuation of a research program, we will 
expense any remaining deferred charge or prepaid 
tax. As of December 31, 2015, the total deferred 
charges and prepaid taxes were $697.9 million.

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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. We currently do not 
intend or foresee a need to repatriate these funds. 
We expect existing domestic cash, cash equivalents, 
marketable securities and cash flows from operations 
to continue to be sufficient to fund our domestic 
operating activities and cash commitments for 
investing and financing activities for the foreseeable 
future.

As of December 31, 2015, our non-U.S. 
subsidiaries’ undistributed foreign earnings included 
in consolidated retained earnings and other basis 
differences aggregated to approximately $6.0 
billion. All undistributed foreign earnings of non-
U.S. subsidiaries, exclusive of earnings that would 
result in little or no net income tax expense or which 
were previously taxed under current U.S. tax law, are 
reinvested indefinitely in operations outside the 
U.S. This determination is made on a jurisdiction-by-
jurisdiction basis and takes into the account the 
liquidity requirements in both the U.S. and within our 
foreign subsidiaries.  

79

If we decide to repatriate funds in the future to 

execute our growth initiatives or to fund any other 
liquidity needs, the resulting tax consequences would 
negatively impact our results of operations through a 
higher effective tax rate and dilution of our 
earnings. The residual U.S. tax liability, if cumulative 
amounts were repatriated, would be between $1.5 
billion to $2.0 billion as of December 31, 2015.

New Accounting Standards

For a discussion of new accounting standards 

please read Note 1, Summary of Significant 
Accounting Principles 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 which 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. Further, we only enter into 
contracts with counterparties that have at least an 
"A" (or equivalent) credit rating. The counter-parties to 
these contracts are major financial institutions and 
there is no significant concentration of exposure with 
any one counter-party.  

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, Switzerland, Denmark, Japan, Australia, New 
Zealand and Central and South America. In addition, 
we receive royalty revenues based on sales of 
RITUXAN in Canada. As a result, our financial position, 
results of operations and cash flows can be affected 
by market fluctuations in foreign exchange rates, 
primarily with respect to the Euro, British pound 
sterling, Canadian dollar, Swiss franc, Danish krone, 
Japanese yen and Australian dollar.

the balance sheet related items. The cash flows from 
these contracts are reported as operating activities in 
our consolidated statement 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, 
2015 and 2014, 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 $185.0 million and 
$160.0 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, 
2015 and 2014, we estimate that such hypothetical 
100 basis point adverse movement would result in a 
hypothetical loss in fair value of approximately $43.0 
million and $14.5 million, respectively, 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, 2015, a 100 basis-point adverse 
movement (increase in LIBOR) would increase annual 
interest expense by approximately $6.8 million. 

Table of Contents

While the financial results of our global activities 

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. revenue 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. expense 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. revenue 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 exchange rates.

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 18 months. We do not 
engage in currency speculation. For a more detailed 
disclosure of our revenue and operating expense 
hedging program, please read Note 9, 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.

Balance Sheet Risk Management Hedging Program

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 of foreign affiliates. In these 
instances, we principally utilize currency forward 
contracts. We have not elected hedge accounting for 

80

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, 2015 
and 2014, respectively. 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-71 of this report 
and is incorporated herein by reference.

Changes in and Disagreements 

Item 9.     
with Accountants on Accounting and 
Financial Disclosure

None.

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Pricing Pressure

Governments in some international markets in 

which we operate have implemented measures aimed 
at reducing healthcare costs to constrain the overall 
level of government expenditures. These implemented 
measures vary by country and include, among other 
things, mandatory rebates and discounts, prospective 
and possible retroactive price reductions and 
suspensions on price increases of pharmaceuticals. 

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 and 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 financial 
position or results of operations.

There is also significant economic pressure on 
state budgets that may result 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 
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 large 
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. 

81

Table of Contents

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, 2015. 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, 2015. 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, 2015, 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, 2015 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, 2015 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 

82

Table of Contents

PART III

Item 10.      Directors, Executive Officers 
and Corporate Governance

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 2016 annual meeting of stockholders.

The information concerning our executive 
officers is set forth under the heading “Our Executive 
Officers” in Part I 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 “Corporate 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,” “Stock Ownership - Section 16(a) 
Beneficial Ownership Reporting Compliance” and 
“Miscellaneous - Stockholder Proposals” contained in 
the proxy statement for our 2016 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 and 
Related Information” and “Corporate Governance” 
contained in the proxy statement for our 2016 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 2016 annual meeting of 
stockholders.

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” contained in the proxy statement for our 
2016 annual meeting of stockholders.

83

Table of Contents

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) Financial Statement Schedules

Page Number

F-2
F-3
F-4
F-5
F-6
F-9
F-71

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.

(3) Exhibits

The exhibits listed on the Exhibit Index beginning on page A-1, which is incorporated herein by reference, are 

filed or furnished as part of this report or are incorporated into this report by reference.

84

  
  
  
  
  
  
  
 
Table of Contents

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has 

duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

SIGNATURES

BIOGEN INC.

By:

/S/    GEORGE A. SCANGOS
George A. Scangos
Chief Executive Officer

Date: February 3, 2016 

85

 
Table of Contents

Pursuant to the requirements 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/    GEORGE A. SCANGOS
George A. Scangos

/S/    PAUL J. CLANCY
Paul J. Clancy

/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 3, 2016

Executive Vice President, Finance and
Chief Financial Officer (principal
financial officer)

February 3, 2016

Vice President, Finance, Chief
Accounting Officer (principal
accounting officer)

February 3, 2016

   Director and Chairman of the Board of

Directors

February 3, 2016

Director

February 3, 2016

Director

February 3, 2016

Director

February 3, 2016

Director

February 3, 2016

Director

February 3, 2016

Director

February 3, 2016

Director

February 3, 2016

Director

February 3, 2016

Director

February 3, 2016

86

  
 
  
 
  
 
 
  
 
  
 
  
 
  
 
  
 
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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-71

F- 1

 
  
  
  
  
  
  
Table of Contents

BIOGEN INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF INCOME
(In millions, except per share amounts)

For the Years Ended December 31,

2015

2014

2013

Revenues:

Product, net
Unconsolidated joint business
Other

Total revenues
Cost and expenses:

$

9,188.5 $
1,339.2
236.1
10,763.8

8,203.4 $
1,195.4
304.5
9,703.3

Cost of sales, excluding amortization of acquired intangible
assets

Research and development
Selling, general and administrative
Amortization of acquired intangible assets
Restructuring charges
Collaboration profit sharing
(Gain) loss on fair value remeasurement of contingent
consideration

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 attributable to noncontrolling interests, net of tax
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.

$

$
$

1,240.4
2,012.8
2,113.1
382.6
93.4
—

30.5
5,872.8
—
4,891.0
(123.7)

1,171.0
1,893.4
2,232.3
489.8
—
—

(38.9)
5,747.7
16.8
3,972.4
(25.8)

4,767.3
1,161.6
12.5
3,593.2
46.2
3,547.0 $

3,946.6
989.9
15.1
2,941.6
6.8
2,934.8 $

15.38 $
15.34 $

12.42 $
12.37 $

230.7
231.2

236.4
237.2

5,542.3
1,126.0
263.9
6,932.2

857.7
1,444.1
1,712.1
342.9
—
85.4

(0.5)
4,441.6
24.9
2,515.5
(34.9)

2,480.6
601.0
17.2
1,862.3
—
1,862.3

7.86
7.81

236.9
238.3

See accompanying notes to these consolidated financial statements.

F- 2

 
 
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BIOGEN INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(In millions)

Net income attributable to Biogen Inc.

$

3,547.0 $

2,934.8 $

1,862.3

For the Years Ended December 31,

2015

2014

2013

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

Currency translation adjustment

Total other comprehensive income (loss), net of tax

Comprehensive income attributable to Biogen Inc.

(1.7)

1.3

(0.4)

0.4

(6.4)

(6.0)

110.8

101.7

(172.3)
(61.5)

(6.2)

(96.4)

(164.5)

3,382.5

(6.3)
95.4

(12.0)

(109.2)

(31.8)

2,903.0

11.8

(10.4)

1.4

(26.7)

13.7
(13.0)

2.1

37.1

27.6

1,889.9

Comprehensive income attributable to noncontrolling interests,
net of tax

Comprehensive income

46.2

6.8

—

$

3,428.7 $

2,909.8 $

1,889.9

See accompanying notes to these consolidated financial statements.

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BIOGEN INC. AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(In millions, except per share amounts)

ASSETS

As of December 31,

2015

2014

Current assets:

Cash and cash equivalents
Marketable securities
Accounts receivable, net
Due from unconsolidated joint business, net
Inventory
Other current assets

Total current assets

Marketable securities
Property, plant and equipment, net
Intangible assets, net
Goodwill
Investments and other assets

Total assets

Current liabilities:

LIABILITIES AND EQUITY

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
Long-term 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; 22.6 million shares, respectively

Total Biogen Inc. shareholders’ equity

Noncontrolling interests

Total equity
Total liabilities and equity

$

$

$

1,308.0 $
2,120.5
1,227.0
314.5
893.4
836.9
6,700.3
2,760.4
2,187.6
4,085.1
2,663.8
1,107.6

19,504.8 $

4.8 $

208.7
267.4
2,096.8
2,577.7
6,521.5
124.9
905.8
10,129.9

—
0.1
—
(224.0)
12,208.4
(2,611.7)
9,372.8
2.1
9,374.9

$

19,504.8 $

1,204.9
640.5
1,292.4
283.4
804.0
309.8
4,535.0
1,470.7
1,765.7
4,028.5
1,760.2
754.6
14,314.7

3.1
168.1
229.2
1,817.7
2,218.1
580.3
52.2
650.1
3,500.7

—
0.1
4,196.2
(59.5)
9,283.9
(2,611.7)
10,809.0
5.0
10,814.0
14,314.7

See accompanying notes to these consolidated financial statements.

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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

Share-based compensation

Deferred income taxes

Other

Changes in operating assets and liabilities, net:

Accounts receivable

Inventory

Other assets

Accrued expenses and other current liabilities

Current taxes payable

Other long-term liabilities and taxes payable

Due from unconsolidated joint business

Net cash flows provided by operating activities

Cash flows from investing activities:

Proceeds from sales and maturities of marketable securities

Purchases of marketable securities

Acquisition of TYSABRI rights

Contingent consideration related to Fumapharm AG acquisition

Acquisitions of businesses

Purchases of property, plant and equipment

Other

For the Years Ended December 31,

2015

2014

2013

$

3,593.2 $

2,941.6 $

1,862.3

600.4

161.4

(145.6)

82.2

29.0

(174.4)

(156.6)

74.2

(410.2)

93.6

(31.1)

688.1

155.3

(308.2)

(50.3)

(512.4)

(185.9)

(94.5)

244.3

61.0

33.8

(30.7)

531.7

136.3

(245.1)

(27.6)

(126.7)

(243.9)

(160.2)

284.1

156.8

161.7

15.7

3,716.1

2,942.1

2,345.1

4,063.0

2,718.9

(6,864.9)

(3,583.1)

—

(850.0)

(198.8)

(643.0)

(59.9)

—

(375.0)

—

(287.8)

(16.0)

5,190.1

(3,278.1)

(3,262.7)

(15.0)

—

(246.3)

7.3

Net cash flows used in investing activities

(4,553.6)

(1,543.0)

(1,604.7)

Cash flows from financing activities:

Purchase of treasury stock

Proceeds from issuance of stock for share-based compensation
arrangements
Excess tax benefit from share-based compensation

Proceeds from borrowings

Repayments of borrowings

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

Cash and cash equivalents, beginning of the year

Cash and cash equivalents, end of the year

(5,000.0)

(886.8)

(400.3)

54.2

78.2

5,930.5

(2.1)

(74.4)

986.4

148.9

(45.8)

1,204.9

54.9

96.4

—

(2.7)

(17.7)

(755.9)

643.2

(40.9)

602.6

$

1,308.0 $

1,204.9 $

66.8

73.5

—

(452.4)

(4.1)

(716.5)

23.9

8.0

570.7

602.6

See accompanying notes to these consolidated financial statements.

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Balance, December 31,
2014
Net income
Other comprehensive
income, net of tax
Distribution to
noncontrolling interests
Acquisition of
noncontrolling interests
Repurchase of common
stock pursuant to the
2015 Share Repurchase
Program, at cost
Retirement of common
stock pursuant to the
2015 Share Repurchase
Program, at cost
Issuance of common
stock under stock option
and stock purchase
plans
Issuance of common
stock under stock award
plan
Compensation expense
related to share-based
payments
Tax benefit from share-
based payments
Balance, December 31,
2015

BIOGEN INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF EQUITY
(In millions)

Preferred stock

Common stock

Shares

Amount

Shares

Amount

Additional
paid-in
capital

Accumulated
other
comprehensive
loss

Treasury stock

Retained
earnings

Shares

Amount

Total
Biogen Inc.
shareholders’
equity

Noncontrolling
interests

Total
equity

— $ — 257.1 $ 0.1 $4,196.2 $

(59.5) $ 9,283.9
3,547.0

(22.6) $(2,611.7) $ 10,809.0 $

3,547.0

5.0 $10,814.0
3,593.2

46.2

(164.5)

(164.5)

—

(164.5)

—

—

(60.0)

(60.0)

10.9

10.9

(16.8)

(5,000.0)

(5,000.0)

(5,000.0)

(16.8)

— (4,377.5)

(622.5)

16.8

5,000.0

—

0.3

—

54.2

54.2

—

54.2

0.6

—

(125.1)

(125.1)

(125.1)

183.2

69.0

183.2

69.0

183.2

69.0

— $ — 241.2 $ 0.1 $

— $

(224.0) $12,208.4

(22.6) $(2,611.7) $ 9,372.8 $

2.1 $ 9,374.9

See accompanying notes to these consolidated financial statements.

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Balance, December 31,
2013
Net income
Other comprehensive
income, net of tax
Distribution to
noncontrolling interests
Other transactions with
noncontrolling interests
Repurchase of common
stock for Treasury
pursuant to the 2011
Share Repurchase
Program, at cost
Issuance of common
stock under stock option
and stock purchase
plans
Issuance of common
stock under stock award
plan
Compensation expense
related to share-based
payments
Tax benefit from share-
based payments
Balance, December 31,
2014

BIOGEN INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF EQUITY - (Continued)
(In millions)

Preferred stock

Common stock

Shares

Amount

Shares

Amount

Additional
paid-in
capital

Accumulated
other
comprehensive
loss

Treasury stock

Retained
earnings

Shares

Amount

Total
Biogen Inc.
shareholders’
equity

Noncontrolling
interests

Total
equity

— $ — 256.0 $ 0.1 $4,023.6 $

(27.7) $ 6,349.1
2,934.8

(31.8)

(19.7) $(1,724.9) $ 8,620.2 $

2,934.8

0.6 $ 8,620.8
2,941.6
6.8

(31.8)

—

(31.8)

—

—

(9.1)

6.7

(9.1)

6.7

(2.9)

(886.8)

(886.8)

(886.8)

0.3

—

54.9

54.9

54.9

0.8

—

(140.3)

(140.3)

(140.3)

165.0

93.0

165.0

93.0

165.0

93.0

— $ — 257.1 $ 0.1 $4,196.2 $

(59.5) $ 9,283.9

(22.6) $(2,611.7) $ 10,809.0 $

5.0 $10,814.0

See accompanying notes to these consolidated financial statements.

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Table of Contents

Balance, December 31,
2012
Net income
Other comprehensive
income, net of tax
Deconsolidation of
noncontrolling interests
Repurchase of common
stock for Treasury
pursuant to the 2011
Share Repurchase
Program, at cost
Issuance of common
stock under stock option
and stock purchase
plans
Issuance of common
stock under stock award
plan
Compensation expense
related to share-based
payments
Tax benefit from share-
based payments
Balance, December 31,
2013

BIOGEN INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF EQUITY - (Continued)
(In millions)

Preferred stock

Common stock

Shares

Amount

Shares

Amount

Additional
paid-in
capital

Accumulated
other
comprehensive
loss

Treasury stock

Retained
earnings

Shares

Amount

Total
Biogen Inc.
shareholders’
equity

Noncontrolling
interests

Total
equity

— $ — 254.2 $ 0.1 $3,854.5 $

(55.3) $ 4,486.8
1,862.3

27.6

(17.7) $(1,324.6) $ 6,961.5 $

1,862.3

27.6

—

2.3 $ 6,963.8
1,862.3
—

—

27.6

(1.7)

(1.7)

0.8

1.0

—

—

66.7

(89.7)

146.2

45.9

(2.0)

(400.3)

(400.3)

(400.3)

66.7

(89.7)

146.2

45.9

66.7

(89.7)

146.2

45.9

— $ — 256.0 $ 0.1 $4,023.6 $

(27.7) $ 6,349.1

(19.7) $(1,724.9) $ 8,620.2 $

0.6 $ 8,620.8

See accompanying notes to these consolidated financial statements.

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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, manufacturing and delivering 

therapies to patients for the treatment of neurodegenerative diseases, hematologic conditions and autoimmune 
disorders.

Our marketed products include TECFIDERA, AVONEX, PLEGRIDY, TYSABRI and FAMPYRA for multiple sclerosis 
(MS), ELOCTATE for hemophilia A and ALPROLIX for hemophilia B, and FUMADERM for the treatment of severe plaque 
psoriasis. We also have a collaboration agreement with Genentech, Inc. (Genentech), a wholly-owned member of the 
Roche Group, which entitles us to 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 indicated for the 
treatment of CLL, and other potential anti-CD20 therapies.

In addition to our innovative drug development efforts, we aim to leverage our manufacturing capabilities and 
scientific expertise to extend our mission to improve the lives of patients living with serious diseases through the 
development, manufacture and marketing of biosimilars through Samsung Bioepis, our joint venture with Samsung 
BioLogics Co. Ltd. (Samsung Biologics). 

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) 
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 are believed 
to be 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 revenue 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. Product revenues are recorded net of applicable reserves for discounts and allowances.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Reserves for Discounts and Allowances

We establish reserves for trade term discounts, wholesaler incentives, Medicaid rebates, co-payment 

assistance (copay), Veterans Administration (VA) and Public Health Service (PHS) discounts, managed care rebates, 
product returns and other governmental rebates or applicable allowances, including those associated with the 
implementation of pricing actions in certain of the international markets in which we operate. Reserves established 
for these discounts and allowances 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). These reserves are based 
on estimates of the amounts earned or to be claimed on the related sales. 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, patient copay assistance, VA 

and 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 
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 consists 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 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 or applicable allowances primarily relate to mandatory rebates and discounts in 

international markets where government-sponsored healthcare systems are the primary payors for healthcare.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

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 Unconsolidated Joint Business

Revenues from unconsolidated joint business consists of (i) our share of pre-tax profits and losses in the U.S. 
for RITUXAN and GAZYVA; (ii) reimbursement of our selling and development expenses in the U.S. for RITUXAN; and 
(iii) revenue on sales in the rest of world for RITUXAN, which consist of our share of pre-tax co-promotion profits in 
Canada and royalty revenue on sales outside the U.S. and Canada by the Roche Group and its sublicensees. Pre-tax 
co-promotion profits on RITUXAN are calculated and paid to us by Genentech in the U.S. and by the Roche Group in 
Canada. Pre-tax co-promotion profits consist of U.S. and Canadian net sales to third-party customers less the cost to 
manufacture, third-party royalty expenses, distribution, selling, and marketing expenses, and joint development 
expenses incurred by Genentech, the Roche Group and us. We record our share of the pre-tax co-promotion profits on 
RITUXAN in Canada and royalty revenues on sales outside the U.S. on a cash basis as we do not have the ability to 
estimate these profits or royalty revenue in the period incurred. Additionally, our share of the pre-tax profits on 
RITUXAN and GAZYVA in the U.S. includes estimates made by Genentech and those estimates are subject to 
change. Actual results may differ from our estimates. For additional information related to our collaboration with 
Genentech, please read Note 19, Collaborative and Other Relationships, to these consolidated financial statements. 

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. If we are unable to reasonably estimate royalty revenue or do not have access to the information, then we 
record royalty revenues on a cash basis. 

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 revenue 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. Revenue 
allocated to an individual element is recognized when all other revenue recognition criteria are met for that element.

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

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

•  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, 2015 and 2014, respectively.

Other

The carrying amounts reflected in the consolidated balance sheets for current accounts receivable, due from 

unconsolidated joint business, 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, 2015 and 2014, 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 large 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 statement of income.

The credit and economic conditions in certain countries in the E.U. continue to remain uncertain and have, from 

time to time, led to a lengthening of time to collect our accounts receivable in some of these countries. In recent 
years, our collection efforts in Portugal and select regions of Spain have been subject to significant payment delays 
due to government funding and reimbursement practices. As a result, a portion of these receivables have been 
routinely collected beyond our contractual payment terms and over periods in excess of one year. Our accounts 
receivable collection efforts in Portugal and Spain have improved during 2015 with our receivables in Spain now 
expected to be collected within one year. Our net accounts receivable balance from product sales in Portugal and 
Spain totaled $62.4 million and $90.2 million as of December 31, 2015 and 2014, respectively, of which $6.1 
million and $12.6 million were classified as non-current and included in investments and other assets in our 
consolidated balance sheets. 

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

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 which generally require payment within 30 to 90 days. We monitor the financial 
performance and creditworthiness of our large 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, 2015 and 2014, two wholesale distributors individually accounted for approximately 35.4% 

and 23.1%, and 34.4% and 23.3%, 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.

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 sheet. 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 sheet.

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.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

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 collaboration 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 exceed 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 (FIFO) 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 selected for use in a clinical manufacturing campaign.

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 which 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.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

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.

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 on our consolidated balance sheet and include any resulting gain or loss in 
our consolidated statement 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 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 TYSABRI and AVONEX using the 
economic consumption method based on revenue generated from the products underlying the related intangible 
assets. An analysis of the anticipated lifetime revenues of 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 TYSABRI or AVONEX.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

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.

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 revenue from the projects, and 
discounting the net cash flows to present value. The revenue 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 our program for the treatment of TGN. Such programs could become impaired if assumptions used in 
determining the fair value change.

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, then we would need to determine the 
implied fair value of our reporting unit’s goodwill. If the carrying value of our reporting unit’s goodwill exceeds its 
implied fair value, then we would record an impairment loss equal to the difference. As described in Note 24, 
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.

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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. 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 these 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 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 net 
income.

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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 

which vest based on stock performance known as market stock units (MSUs), performance-vested restricted stock 
units which settle in cash (CSPUs), time-vested restricted stock units (RSUs), performance-vested restricted stock 
units which 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 on which the employee is 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 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 on 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 19, 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 
unconsolidated joint business revenues.

For collaborations with commercialized products, if we are the principal, we record revenue 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, 2015, 2014 and 2013, 

advertising costs totaled $108.6 million, $92.9 million and $72.7 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 in our consolidated group, both current and 
deferred, are recorded as a prepaid tax or deferred charge and recognized through the consolidated statement 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 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. 

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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, 
we do not believe that the impact of recently issued standards that are not yet effective will have a material impact 
on our financial position or results of operations upon adoption.

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. The 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. In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers (Topic 606): 
Deferral of the Effective Date, which delayed the effective date of the new standard from January 1, 2017 to January 
1, 2018. The FASB also agreed to allow entities to choose to adopt the standard as of the original effective date. We 
are currently evaluating the method of adoption and the potential impact that Topic 606 may have on our financial 
position and results of operations.

In June 2014, the FASB issued ASU No. 2014-11, Transfers and Servicing (Topic 860): Repurchase-to-Maturity 
Transactions, Repurchase Financings, and Disclosure. The new standard expanded secured borrowing accounting to 
include repurchase-to-maturity transactions and repurchase financings and set forth new disclosure requirements for 
repurchase agreements, securities lending transactions, and repurchase-to-maturity transactions that are accounted 
for as secured borrowings. We adopted this standard on April 1, 2015 and expanded our disclosures presented in 
Note 8, Financial Instruments to these consolidated financial statements. The adoption of this standard did not have 
an impact on our financial position or results of operations.

In April 2015, the FASB issued ASU No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30): 

Simplifying the Presentation of Debt Issuance Costs. The new standard requires that debt issuance costs related to 
a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that 
debt liability, consistent with debt discounts. In August 2015, the FASB issued ASU No. 2015-15, Interest - 
Imputation of Interest (Subtopic 835-30): Presentation and Subsequent Measurement of Debt Issuance Costs 
Associated with Line-of-Credit Arrangements, which clarified that debt issuance costs related to line-of-credit 
arrangements can be presented in the balance sheet as an asset and amortized over the term of the line-of-credit 
arrangement. We adopted these standards as of September 30, 2015 with retroactive application. The adoption of 
these standards did not have a significant impact on our financial position or results of operations. For additional 
information, please read Note 11, Indebtedness to these consolidated financial statements.

In April 2015, the FASB issued ASU No. 2015-05, Intangibles - Goodwill and Other - Internal-Use Software 
(Subtopic 350-40): Customer's Accounting for Fees Paid in a Cloud Computing Arrangement. Under this standard, if a 
cloud computing arrangement includes a software license, the software license element of the arrangement should 
be accounted for consistent with the acquisition of other software licenses. If a cloud computing arrangement does 
not include a software license, the arrangement should be accounted for as a service contract. The new standard will 
be effective for us on January 1, 2016. The adoption of this standard is not expected to have an impact on our 
financial position or results of operations.

In May 2015, the FASB issued ASU No. 2015-07, Fair Value Measurement (Topic 820): Disclosures for 

Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent). The new standard 
removes the requirement to categorize within the fair value hierarchy all investments for which fair value is measured 
using the net asset value per share practical expedient. The new standard will be effective for us on January 1, 
2016. Early application is permitted. We maintain investments in certain venture capital funds which primarily invest 
in small, privately-owned, venture-backed biotechnology companies. The value of our investments in these venture 
capital funds is estimated using the net asset value of the fund and has been included in the fair value hierarchy 
disclosure as a Level 3 measurement. These venture capital investments are not material to our financial position or 
results of operations. We adopted this standard as of June 30, 2015 and our investments in venture capital funds 
are no longer included in our disclosures reflected in Note 7, Fair Value Measurements to these consolidated 
financial statements.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

In July 2015, the FASB issued ASU No. 2015-11, Inventory (Topic 330): Simplifying the Measurement of 
Inventory. The new standard applies only to inventory for which cost is determined by methods other than last-in, 
first-out and the retail inventory method, which includes inventory that is measured using first-in, first-out or average 
cost. Inventory within the scope of this standard is required to be measured at the lower of cost and net realizable 
value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably 
predictable costs of completion, disposal, and transportation. The new standard will be effective for us on January 1, 
2017. The adoption of this standard is not expected to have an impact on our financial position or results of 
operations.

In September 2015, the FASB issued ASU No. 2015-16, Business Combinations (Topic 805): Simplifying the 

Accounting for Measurement-Period Adjustments. The new standard requires that an acquirer recognize adjustments 
to provisional amounts that are identified during the measurement period in the reporting period in which the 
adjustment amounts are determined and sets forth new disclosure requirements related to the adjustments. The 
new standard will be effective for us on January 1, 2016. The adoption of this standard is not expected to have an 
impact on our financial position or results of operations.

In November 2015, the FASB issued ASU No. 2015-17, Income Taxes (Topic 740): Balance Sheet Classification 
of Deferred Taxes. The new standard requires that deferred tax assets and liabilities be classified as noncurrent in a 
classified statement of financial position. We adopted this standard as of December 31, 2015 with retroactive 
application. As a result, we reclassified our deferred tax assets classified as current to noncurrent and our deferred 
tax liabilities classified as current to noncurrent in our December 31, 2014 consolidated balance sheet, to conform 
our prior year presentation to our current year presentation. For additional information, please read Note 16, Income 
Taxes to these consolidated financial statements.

2.      Acquisitions

Convergence Pharmaceuticals

On February 12, 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 is a Phase 2 clinical candidate Raxatrigine 
(CNV1014802), which has demonstrated clinical activity in proof-of-concept studies for trigeminal neuralgia (TGN). 
Additionally, Raxatrigine has potential applicability in several other neuropathic pain states. 

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 Raxatrigine for the treatment of TGN. The acquisition was funded 
from our existing cash on hand and has been accounted for as the acquisition of a business. In addition to obtaining 
the rights to Raxatrigine and additional product candidates in preclinical development, we retained the services of 
key employees of Convergence.

In connection with our acquisition of Convergence, we recorded a liability of $274.5 million representing the fair 

value of the contingent consideration. This amount was estimated through a valuation model that incorporates 
industry-based probability adjusted assumptions relating to the achievement of these milestones and thus the 
likelihood of making the contingent payments. This fair value measurement is based upon significant inputs not 
observable in the market and therefore represents a Level 3 measurement. 

The purchase price, as adjusted, consisted of the following:

(In millions)
Cash portion of consideration

Contingent consideration

Total purchase price

$

$

200.1

274.5

474.6

During the second quarter of 2015, we adjusted our preliminary estimate of the fair value of the assets 

acquired and contingent consideration as of the date of acquisition as a result of finalizing the purchase price 
accounting. This resulted in an increase in the value of our estimated contingent consideration and goodwill by 
$36.0 million, respectively. Our revised purchase price allocation is reflected in the chart below. Our purchase price 
allocation is substantially complete.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Subsequent changes in the fair value of the contingent consideration obligation will be recognized as 
adjustments to contingent consideration and reflected in our consolidated statements of income. For additional 
information related to the fair value of this obligation, please read Note 7, Fair Value Measurements to these 
consolidated financial statements.

The following table summarizes the estimated fair values of the separately identifiable assets acquired and 

liabilities assumed as of February 12, 2015, as adjusted:

(In millions)
In-process research and development

Other intangible assets

Goodwill

Deferred tax liability

Other, net

Total purchase price

$

$

424.6

7.6

128.3

(84.9)

(1.0)

474.6

Our estimate of the fair value of the IPR&D programs acquired was determined through a probability adjusted 

discounted cash flow analysis utilizing a discount rate of 11%. This valuation was primarily driven by the value 
associated with the lead candidate, Raxatrigine, which is in development for the treatment of TGN and is expected to 
be completed no earlier than 2020, at a remaining cost of approximately $145.0 million. The fair value associated 
with Raxatrigine for the treatment of TGN was $200.0 million. We have recorded additional IPR&D assets related to 
the use of Raxatrigine in two additional neuropathic pain indications, with a total estimated value of $220.0 million. 
The remaining cost of development for these two indications is approximately $415.0 million, with an expected 
completion date of no earlier than 2021. These fair value measurements were based on significant inputs not 
observable in the market and thus represent Level 3 fair value measurements.

We have 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 which 
have no tax basis. The goodwill is not tax deductible.

Pro forma results of operations would not be materially different as a result of the acquisition of Convergence 

and therefore are not presented. Subsequent to the acquisition date, our results of operations include the results of 
operations of Convergence.

TYSABRI

On April 2, 2013, we acquired full ownership of all remaining rights to TYSABRI from Elan that we did not 

already own or control. Upon the closing of the transaction, we made an upfront payment of $3.25 billion to Elan, 
which was funded from our existing cash, and our collaboration agreement with Elan was terminated. 

We accounted for this transaction as the acquisition of an asset as we did not acquire any employees from 

Elan nor did we acquire any significant processes that we did not previously perform or manage under the 
collaboration agreement. Under the collaboration agreement, we manufactured TYSABRI and collaborated with Elan 
on the product's marketing, commercial, regulatory, distribution and ongoing development activities. The 
collaboration agreement was designed to effect an equal sharing of worldwide profits and losses generated by the 
activities of the collaboration. For additional information related to this collaboration, please read Note 19, 
Collaborative and Other Relationships to these consolidated financial statements.

The $3.25 billion upfront payment was capitalized in the second quarter of 2013 as an intangible asset in our 

consolidated balance sheet as TYSABRI had reached technological feasibility. We adjusted the value of this 
intangible asset by $84.4 million related to deferred revenue from two sales-based milestones previously paid by 
Elan as well as transaction costs. The net intangible asset capitalized was $3.18 billion. Commencing in the second 
quarter of 2013, we began amortizing this intangible asset over the estimated useful life using an economic 
consumption method based on actual and expected revenue generated from the sales of our TYSABRI product. 

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Following the April 2, 2013 closing of the transaction, we began recording 100% of U.S. revenues, cost of sales 

and operating expenses related to TYSABRI in our consolidated statements of income. Under the terms of the 
acquisition agreement, we continued to share TYSABRI profits with Elan on an equal basis until April 30, 2013. We 
recorded the profit split for the month ended April 30, 2013, as cost of sales in our consolidated statements of 
income as we controlled TYSABRI effective April 2, 2013. Between May 1, 2013 and April 30, 2014, we made 
contingent payments to Elan of 12% on worldwide net sales of TYSABRI. Commencing May 1, 2014 and thereafter, 
we will 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. In 2014, the $2.0 billion threshold was pro-rated for the portion 
of 2014 remaining after the first 12 months expired. Elan was acquired by Perrigo Company plc (Perrigo) in 
December 2013. Following that acquisition, we began making these royalty payments to Perrigo. Royalty payments to 
Perrigo and other third parties are recognized as cost of sales in our consolidated statements of income.

3.      Restructuring

On October 21, 2015, we announced a corporate restructuring, which includes the termination of certain 
pipeline programs and an 11% reduction in workforce. We anticipate making cash payments totaling approximately 
$120 million under this program, which includes approximately $15.9 million related to previously 2015 accrued 
incentive compensation, for a total net expected restructuring charge of $105 million. These amounts will be 
substantially incurred and paid by the end of 2016.

We recognized $93.4 million of these charges during the fourth quarter of 2015, of which $86.2 million was 

related to our workforce reduction and $7.2 million was related to the pipeline program terminations. 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 restructuring efforts during 2015:

(In millions)
Restructuring charges incurred during the fourth quarter of
2015
Previously accrued incentive compensation

Reserves established

Amounts paid through December 31, 2015
Restructuring reserve as of December 31, 2015

Workforce
Reduction

Pipeline
Programs

Total

$

$

86.2 $
15.9
102.1
(68.4)
33.7 $

7.2 $
—
7.2
(3.6)
3.6 $

93.4
15.9
109.3
(72.0)
37.3

4.    Reserves for Discounts and Allowances

As a result of our acquisition of all remaining rights to TYSABRI from Elan, we began recognizing reserves for 

discounts and allowances for U.S. TYSABRI revenue in the second quarter of 2013. In addition, following our recently 
launched products, we began recognizing reserves for discounts and allowances related to these products' revenue. 

An analysis of the change in reserves is summarized as follows:

(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

$

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

$

F- 23

Table of Contents

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

(In millions)
2014
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)
2013
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

$

47.0 $

345.5 $

33.7 $

426.2

347.3
(1.0)

1,265.4
(28.5)

39.1
13.5

1,651.8
(16.0)

(299.7)

(933.4)

(4.1)

(1,237.2)

(46.0)
47.6 $

(261.9)
387.1 $

(33.1)
49.1 $

(341.0)
483.8

Discounts

Contractual
Adjustments

Returns

Total

14.3 $

196.0 $

26.8 $

237.1

236.3
(0.7)

861.3
(16.4)

(189.7)

(560.4)

22.9
1.1

—

(13.2)
47.0 $

(135.0)
345.5 $

(17.1)
33.7 $

1,120.5
(16.0)

(750.1)

(165.3)
426.2

$

$

$

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

5.     

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,

2015

2014

144.6 $
518.1
662.7 $

124.6
359.2
483.8

As of December 31,

2015

2014

213.0 $
577.6
143.0
933.6 $

893.4 $

40.2

933.6 $

128.3
511.5
164.2
804.0

804.0
—
804.0

$

$

$

$

$

$

Inventory included in investments and other assets in our consolidated balance sheets primarily consisted of 

work in process.

F- 24

 
 
Table of Contents

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

As of December 31, 2015, our inventory included $24.7 million associated with our ZINBRYTA program, $18.4 

million associated with our BENEPALI program and $24.2 million associated with our FLIXABI program, which have 
been capitalized in advance of regulatory approval. In January 2016, the European Commission (EC) approved the 
marketing authorization application (MAA) for BENEPALI for marketing in the E.U. As of December 31, 2014, our 
inventory included $6.3 million associated with our ZINBRYTA program, which has been capitalized in advance of 
regulatory approval. For information on our pre-approval inventory policy, please read Note 1, Summary of Significant 
Accounting Policies to these consolidated financial statements 

Inventory amounts written down as a result of excess, obsolescence, unmarketability or other reasons are 

charged to cost of sales, and totaled $41.9 million, $50.6 million, and $47.3 million for the years ended 
December 31, 2015, 2014, and 2013, respectively.

6.     

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
tradenames
Acquired and in-
licensed rights and
patents

Total intangible
assets

Estimated Life

Cost

Accumulated
Amortization

Net

Cost

Accumulated
Amortization

As of December 31, 2015

As of December 31, 2014

13-23 years $ 543.3 $ (506.0) $
15-23 years
3,005.3
Indefinite until
commercialization

(2,552.9)

730.5

—

37.3 $ 543.3 $ (481.7) $

452.4

3,005.3

(2,396.8)

730.5

314.1

Indefinite

64.0

—

64.0

64.0

Net

61.6
608.5

314.1

64.0

—

—

6-18 years

3,303.2

(502.3)

2,800.9

3,280.4

(300.1)

2,980.3

$7,646.3 $ (3,561.2) $4,085.1 $7,207.1 $ (3,178.6) $4,028.5

Amortization of acquired intangible assets totaled $382.6 million, $489.8 million, and $342.9 million for the 
years ended December 31, 2015, 2014 and 2013, respectively. Amortization of acquired intangible assets during 
2014 included total impairment charges of $34.7 million related to one of our out-licensed patents and $16.2 
million related to one of our IPR&D intangible assets. 

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. During 2014, we recorded a charge of $34.7 million 
related to the impairment of one of our out-licensed patents to reflect a change in its estimated fair value, due to a 
change in the underlying competitive market for that product. The charge was included in amortization of acquired 
intangible assets. The fair value of the intangible asset was based on a discounted cash flow calculated using Level 
3 fair value measurements and inputs including estimated revenues. There were no impairment charges related to 
our out-licensed patents during 2015.

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, 2015, was $443.9 million. 

F- 25

 
 
Table of Contents

IPR&D

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

IPR&D represents the fair value assigned to research and development assets that we acquire that have not 

reached technological feasibility at the date of acquisition. Upon commercialization, we determine the estimated 
useful life. In connection with our acquisition of Convergence in February 2015, we acquired IPR&D programs with an 
estimated fair value of $424.6 million. This amount has and will be adjusted for foreign exchange rate fluctuations. 
For a more detailed description of this transaction, please read Note 2, Acquisitions to these consolidated financial 
statements.

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 2015. 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.   

During the third quarter of 2014, we updated the probabilities of success related to the early stage programs 
acquired through our recent acquisitions. The change in probability of success, combined with a delay in one of the 
projects, resulted in an impairment loss of $16.2 million in one of our IPR&D assets during 2014. 

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, 2015 was $2,742.9 million. For a more detailed 
description of this transaction, please read Note 2, Acquisitions to these consolidated financial statements.

Estimated Future Amortization of Intangible Assets 

Our amortization expense is based on the economic consumption of intangible assets. Our most significant 
intangible assets are related to our AVONEX and TYSABRI products. Annually, during our long-range planning cycle, we 
perform an analysis of anticipated lifetime revenues of AVONEX and TYSABRI. This analysis is also updated 
whenever events or changes in circumstances would significantly affect the anticipated lifetime revenues of either 
product.

Our most recent long range planning cycle was completed in the third quarter of 2015. Based upon this 

analysis, the estimated future amortization of acquired intangible assets is expected to be as follows:

(In millions)

2016

2017

2018

2019

2020

Total

As of December 31, 2015

$

$

346.4

318.6

291.0

275.1

269.1

1,500.2

F- 26

Table of Contents

Goodwill

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The following table provides a roll forward of the changes in our goodwill balance:

(In millions)
Goodwill, beginning of year

Increase to goodwill
Other

Goodwill, end of year

As of December 31,

2015

2014

$

$

1,760.2 $
908.1
(4.5)
2,663.8 $

1,232.9
527.3
—
1,760.2

The increase in goodwill during 2015 was related to $900.0 million in contingent milestones achieved 

(exclusive of $120.2 million in tax benefits) and payable to the former shareholders of Fumapharm AG or holders of 
their rights and $128.3 million related to our acquisition of Convergence. Other includes changes related to foreign 
exchange rate fluctuations. The increase in goodwill during 2014 was related to $600.0 million in contingent 
milestones achieved (exclusive of $72.7 million in tax benefits) and payable to the former shareholders of 
Fumapharm AG or holders of their rights.

For additional information related to future contingent payments to the former shareholders of Fumapharm AG, 

please read Note 21, Commitments and Contingencies to these consolidated financial statements. For additional 
information related to our acquisition of Convergence, please read Note 2, Acquisitions to these consolidated 
financial statements.

As of December 31, 2015, we had no accumulated impairment losses related to goodwill.

7.      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,
2015

Quoted
Prices in
Active
Markets
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

$

909.5 $

— $

909.5 $

(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:

Derivative contracts
Contingent consideration obligations

Total

1,510.9
2,875.9
494.1
—
27.2
40.1
5,857.7 $

—

—
—
—
—
—
—
—

14.7 $
—
14.7 $

—
506.0
506.0

1,510.9
2,875.9
494.1
37.5
27.2
40.1
5,895.2 $

14.7 $

506.0
520.7 $

$

$

$

—
—
—
37.5
—
—
37.5 $

— $
—
— $

F- 27

 
Table of Contents

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

(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:

Derivative contracts
Contingent consideration obligations

Total

As of
December 31,
2014

Quoted
Prices
in Active
Markets
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

$

716.3 $

— $

716.3 $

1,063.0
849.8
198.3
6.9
72.7
36.9
2,943.9 $

5.4 $

215.5
220.9 $

$

$

$

—
—
—
6.9
—
—
6.9 $

— $
—
— $

1,063.0
849.8
198.3
—
72.7
36.9
2,937.0 $

5.4 $
—
5.4 $

—
215.5
215.5

—

—
—
—
—
—
—
—

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, refer to Note 1, Summary of Significant Accounting Policies: Fair Value 
Measurements, to these consolidated financial statements.

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,

2015

2014

$

$

9.4 $

602.6
1,497.5
1,014.2
1,764.6
1,757.6
6,645.9 $

12.6
634.6
—
—
—
—
647.2

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 values of each of our series of Senior Notes were 
determined through market, observable, and corroborated sources. For additional information related to our debt 
instruments, please read Note 11, Indebtedness to these consolidated financial statements.

Contingent Consideration Obligations

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

Additions

Changes in fair value
Payments

Fair value, end of year

As of December 31,

2015

2014

$

$

215.5 $

274.5
30.5
(14.5)
506.0 $

280.9

—
(38.9)
(26.5)
215.5

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Table of Contents

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

 As of December 31, 2015 and 2014, approximately $301.3 million and $200.0 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. 

There were no changes in valuation techniques or transfers between fair value measurement levels during the 
years ended December 31, 2015 and 2014. During the third quarter 2014, we updated the probabilities of success 
related to the early stage programs acquired through our recent acquisitions. We adjusted the value of our 
contingent consideration liabilities to reflect these changes. The change in probability of success, combined with a 
delay in one of the projects, resulted in a net gain of $49.4 million during 2014, which was recorded in (gain) loss on 
fair value remeasurement of contingent consideration and reduced the fair value of our contingent consideration 
obligations. 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 related to the valuation techniques and 
inputs utilized in valuation of our financial assets and liabilities, please read Note 1, Summary of Significant 
Accounting Policies to these consolidated financial statements.

In connection with our acquisition of Convergence in February 2015, we recorded a liability of $274.5 million, 

representing the fair value of the contingent consideration. This valuation was based on probability weighted net 
cash outflow projections of $450.0 million, discounted using a rate of 2%, which was the estimated cost of debt 
financing for market participants. This liability reflects 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 a 
more detailed description of this transaction, please read Note 2, Acquisitions to these consolidated financial 
statements. As of December 31, 2015, the fair value of this contingent consideration obligation was $297.5 million, 
discounted using a rate of 3%, and approximately $197.2 million is reflected as a component of accrued expenses 
and other in our consolidated balance sheets as we expect to make the payment within a year.

In connection with our acquisition of Stromedix in March 2012, we recorded a contingent consideration 
obligation of $122.2 million. As of December 31, 2015 and 2014, the fair value of this contingent consideration 
obligation was $131.5 million and $130.5 million, respectively. Our most recent valuation was determined based 
upon probability weighted net cash outflow projections of $419.0 million, discounted using a rate of 2%, which is a 
measure of the credit risk associated with settling the liability. For 2015 compared to 2014, 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.

Upon completion of our purchase of the noncontrolling interest in our joint venture investments in Biogen 
Dompé SRL and Biogen Dompé Switzerland GmbH in September 2011, we recorded a contingent consideration 
obligation of $38.8 million. As of December 31, 2015 and 2014, the fair value of this contingent consideration 
obligation was $0.0 million and $15.5 million, respectively. For 2015 compared to 2014, the net decrease in the fair 
value of this obligation was primarily due to payments of $14.5 million of sales-based milestones. Our obligations 
under this agreement were completed as of December 31, 2015.

In connection with our acquisition of Biogen Idec International Neuroscience GmbH (BIN), formerly Panima 

Pharmaceuticals AG (Panima), in December 2010, we recorded a contingent consideration obligation of $81.2 
million. As of December 31, 2015 and 2014, the fair value of this contingent consideration obligation was $77.0 
million and $69.5 million, respectively. Our most recent valuation was determined based upon probability weighted 
net cash outflow projections of $365.0 million, discounted using a rate of 3%, which is a measure of the credit risk 
associated with settling the liability. For 2015 compared to 2014, the net increase in the fair value of this obligation 
was primarily due to changes in the probability and expected timing related to the achievement of certain remaining 
developmental milestones and in the discount rate.

F- 29

Table of Contents

Acquired IPR&D

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

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. This 
estimate was also adjusted from our preliminary estimate as of the date of acquisition to reflect revised estimates 
to our initial clinical development plans, resulting probabilities of success and the timing of certain milestone 
payments. These assets will be tested for impairment annually until commercialization, after which time the IPR&D 
will be amortized over its estimated useful life. For a more detailed description of this transaction, please read Note 
2, Acquisitions to these consolidated financial statements.

8.    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 on the accompanying consolidated balance sheet:

(In millions)
Commercial paper
Overnight reverse repurchase agreements
Money market funds
Short-term debt securities

Total

As of December 31,

2015

2014

$

$

21.9 $

134.7
673.8
79.1

909.5 $

54.2
305.0
321.2
35.9
716.3

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. Our overnight reverse repurchase agreements are collateralized with agency-guaranteed mortgage-backed 
securities and represent approximately 0.7% and 2.1% of total assets as of December 31, 2015 and 2014, 
respectively.

The following tables summarize our marketable debt and equity securities:

As of December 31, 2015 (In millions)
Corporate debt securities

Current
Non-current

Government securities

Current
Non-current

Mortgage and other asset backed securities

Current
Non-current

Total marketable debt securities

Marketable equity securities, non-current

$
$

Fair
Value

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Amortized
Cost

$

394.3 $

— $
0.1

0.1
—

—
0.1
0.3 $
9.2 $

(0.5) $
(4.1)

394.8
1,120.6

(1.1)
(3.1)

—
(1.8)
(10.6) $
— $

1,724.4
1,155.6

2.8
493.0
4,891.2
28.3

1,116.6

1,723.4
1,152.5

2.8
491.3
4,880.9 $
37.5 $

F- 30

 
Table of Contents

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

As of December 31, 2014 (In millions)
Corporate debt securities

Current
Non-current

Government securities

Current
Non-current

Mortgage and other asset backed securities

Current
Non-current

Total marketable debt securities
Marketable equity securities, non-current

Fair
Value

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Amortized
Cost

$

$
$

370.4 $
692.6

269.9
579.9

0.2
198.1
2,111.1 $
6.9 $

— $
0.2

—
0.3

—
0.2
0.7 $
1.2 $

(0.2) $
(1.5)

(0.1)
(0.4)

—
(0.2)
(2.4) $
(0.2) $

370.6
693.9

270.0
580.0

0.2
198.1
2,112.8
5.9

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, 2015

As of December 31, 2014

Estimated
Fair  Value

$

$

2,120.5 $
2,575.9
184.5
4,880.9 $

Amortized
Cost
2,122.0 $
2,583.9
185.3
4,891.2 $

Estimated
Fair  Value

Amortized
Cost

640.5 $

1,343.7
126.9
2,111.1 $

640.8
1,345.2
126.8
2,112.8

The average maturity of our marketable debt securities available-for-sale as of December 31, 2015 and 2014, 

was 16 months and 15 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,

2015

2014

2013

$
$
$

4,063.0 $
1.5 $
3.5 $

2,718.9 $
0.7 $
0.5 $

5,190.1
6.6
2.1

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. Realized losses for the year ended December 31, 
2014, primarily relate to sales of agency mortgage-backed securities and government securities. Realized losses for 
the year ended December 31, 2013, primarily relate to sales of agency mortgage-backed securities and corporate 
securities.

Strategic Investments

As of December 31, 2015 and 2014, our strategic investment portfolio was comprised of investments totaling 

$96.0 million and $47.8 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. 

F- 31

 
 
Table of Contents

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

9. 

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, 2015 and 2014, had durations of 1 to 18 

months and 1 to 15 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 revenue when the sale of product in the 
currency being hedged is recognized and, beginning in the fourth quarter of 2015, 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.

The notional value of foreign currency forward contracts that were entered into to hedge forecasted revenues 

and expenses is summarized as follows:

Foreign Currency: (In millions)
Euro
Swiss francs
Canadian dollar
British pound sterling
Australian dollar
Japanese yen

Notional Amount
As of December 31,

2015

2014

$

945.5 $

80.8
76.7
—
—
—

1,174.6
—
56.7
34.5
19.9
16.6
1,302.3

Total foreign currency forward contracts

$

1,103.0 $

The portion of the fair value of these foreign currency forward contracts that was included in accumulated other 

comprehensive income (loss) in total equity reflected gains of $1.8 million and $72.1 million and losses of $23.6 
million for the years ended December 31, 2015, 2014 and 2013, respectively. We expect all contracts to be settled 
over the next 18 months and 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, 2015 and 2014, 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 on our consolidated statements of income related to our forecasted revenues:

For the Years Ended December 31,

Net Gains/(Losses)
Reclassified from AOCI into Net Income
(Effective Portion)

Location

2015

2014

2013

Revenue

$

173.2 $

6.8 $

(13.2)

Net Gains/(Losses)
Recognized into Net Income
(Ineffective Portion)

2015

2014

2013

$

4.9 $

(1.5) $

(0.2)

Location
Other
income
(expense)

The effect of foreign currency forward contracts designated as hedging instruments on our consolidated 

statements of income related to our forecasted operating expenses was immaterial for 2015.

Interest Rate Contracts - Hedging Instruments

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. 

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Interest Rate Lock Contracts

During 2015, we entered into treasury rate locks, with an aggregated notional amount of $1.1 billion, that 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 11, Indebtedness, 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.

Interest Rate Swap Contracts

In connection with the issuance of our 2.90% Senior Notes,  as described in Note 11, Indebtedness, 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 one month durations, 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 $721.0 million and $365.2 

million as of December 31, 2015 and 2014, respectively. Net losses of $23.8 million and $15.5 million and net 
gains of $5.2 million related to these contracts were recognized as a component of other income (expense), net, for 
the years ended December 31, 2015, 2014 and 2013, 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 for our 

outstanding derivatives including those designated as hedging instruments:

(In millions)
Hedging Instruments:
Asset derivatives

Liability derivatives

Other Derivatives:
Asset derivatives
Liability derivatives

(In millions)
Hedging Instruments:
Asset derivatives

Other Derivatives:
Asset derivatives
Liability derivatives

Balance Sheet Location

Fair Value
As of December 31, 2015

Other current assets
$
Investments and other assets $
$
Accrued expenses and other
$
Other long-term liabilities

Other current assets
Accrued expenses and other

$
$

16.6
0.3
10.2
2.5

10.3
2.0

Balance Sheet Location

Fair Value
As of December 31, 2014

Other current assets
$
Investments and other assets $

Other current assets
Accrued expenses and other

$
$

69.5
1.9

1.3
5.4

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

10.    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,

2015

2014

$

$

74.7 $

1,035.6
166.6
1,079.6
647.1
72.9
441.2
3,517.7
(1,330.1)
2,187.6 $

56.9
947.7
155.5
1,011.3
547.8
64.3
168.6
2,952.1
(1,186.4)
1,765.7

Depreciation expense totaled $217.9 million, $198.4 million and $187.8 million for 2015, 2014 and 2013, 

respectively.

For 2015, 2014 and 2013, we capitalized interest costs related to construction in progress totaling 

approximately $10.4 million, $6.4 million and $7.8 million, respectively. 

Research Triangle Park Facility Purchase

On August 24, 2015, we purchased from Eisai, Inc. (Eisai) its drug product manufacturing facility and 
supporting infrastructure in Research Triangle Park (RTP), North Carolina for $104.8 million. The purchase price 
consisted of the following:

(In millions)
Buildings

Machinery and equipment

Land

Total purchase price

$

$

58.6

25.9

20.3

104.8

On August 24, 2015, we also amended our existing 10 year lease related to Eisai's oral solid dose products 

manufacturing facility in RTP, North Carolina where we manufacture our and Eisai's oral solid dose products. As 
amended, the lease provides for a 3 year term and our agreement to purchase the facility upon expiration of the 
lease term and Eisai's completion of certain activities. Accordingly, we recorded the assets along with a 
corresponding financing obligation on our consolidated balance sheet for $20.3 million, the net present value of the 
future minimum lease payments. The assets were recorded as a component of buildings and machinery and 
equipment. We expect to complete the purchase of the oral solid products manufacturing facility at the end of the 
lease term in the third quarter of 2018.

Solothurn, Switzerland Facility

On December 1, 2015, we purchased land in Solothurn, Switzerland for 64.4 million Swiss Francs 

(approximately $62.5 million). We plan to build a biologics manufacturing facility on this land in the Commune of 
Luterbach over the next several years. As of December 31, 2015, we have approximately $99.0 million capitalized in 
construction in progress related to the construction of this facility. 

Weston Exit Costs

As a result of our decision to relocate our corporate headquarters to Cambridge, Massachusetts, we vacated 
part of our Weston, Massachusetts facility in the fourth quarter of 2013. We incurred a charge of $27.2 million in 
connection with this move. This charge represented our remaining lease obligation for the vacated portion of our 
Weston, Massachusetts facility, net of sublease income expected to be received. The term of our sublease for the 

F- 34

 
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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

vacated portion of our Weston, Massachusetts facility started in January 2014 and will continue through the 
remaining term of our lease agreement.

11.  

Indebtedness

Our indebtedness is summarized as follows:

(In millions)
Current portion:

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:
2008 Senior Notes

6.875% Senior Notes due March 1, 2018

2015 Senior Notes

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

As of December 31,

2015

2014

$

$

$

3.1 $
1.7

4.8 $

3.1
—

3.1

565.3 $

571.7

1,485.5
992.2
1,733.4
1,721.1
5.9
18.1

—
—
—
—
8.6
—

Non-current portion of notes payable and other financing arrangements

$

6,521.5 $

580.3

The following is a summary description of our principal indebtedness as of December 31, 2015:

2015 Senior Notes

On September 15, 2015, we issued senior unsecured notes for an aggregate principal amount of $6.0 billion, 

consisting of the following:

•  $1.5 billion of 2.90% Senior Notes due September 15, 2020, valued at 99.792% of par;

•  $1.0 billion of 3.625% Senior Notes due September 15, 2022, valued at 99.920% of par;

•  $1.75 billion of 4.05% Senior Notes due September 15, 2025, valued at 99.764% of par; and

•  $1.75 billion of 5.20% Senior Notes due September 15, 2045, valued at 99.294% of par.

These notes are senior unsecured obligations and may be redeemed at our option at any time at 100% of the 

principal amount plus accrued interest and a specified make-whole amount. The notes also 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. 

The costs associated with this offering of approximately $47.5 million have been recorded as a reduction to 
the carrying amount of the debt on 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. Interest on the notes is payable March 15 and September 15 of each year. 

In connection with this offering, we also entered into interest rate swaps. The carrying value of the 2.90% 
Senior Notes includes approximately $1.8 million related to changes in the fair value of the interest rate swaps. For 
additional information, please read Note 9, Derivative Instruments, to these consolidated financial statements.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

2008 Senior Notes

On March 4, 2008, we issued $550.0 million aggregate principal amount of 6.875% Senior Notes due 

March 1, 2018 that were originally priced at 99.184% of par. The discount is amortized as additional interest 
expense over the period from issuance through maturity. These notes are senior unsecured obligations. Interest on 
the notes is payable March 1 and September 1 of each year. The 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. The notes contain a 
change of control provision that may require us to purchase the notes under certain circumstances. There is also an 
interest rate adjustment feature that requires us to pay interest at an increased rate on the notes if the credit rating 
on the notes declines below investment grade. In accordance with ASU No. 2015-03, during 2015, we reclassified 
$1.8 million of our debt issuance costs related to our 6.875% Senior Notes from an asset to a reduction to the 
carrying amount of the 6.875% Senior Notes in our 2014 consolidated balance sheet.

Upon the issuance of the 6.875% Senior Notes due in 2018, we 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 swaps, the carrying amount of the 6.875% Senior Notes due in 2018 was increased by $62.8 
million and is being amortized using the effective interest rate method over the remaining life of the Senior Notes 
and is being recognized as a reduction of interest expense. As of December 31, 2015, $17.8 million remains to be 
amortized. 

Notes Payable to Fumedica

In connection with our 2006 distribution agreement with Fumedica, we issued notes totaling 61.4 million Swiss 
Francs which were payable to Fumedica in varying amounts from June 2008 through June 2018. Our remaining note 
payable to Fumedica had a carrying value of 8.9 million Swiss Francs ($9.0 million) and 11.6 million Swiss Francs 
($11.7 million) as of December 31, 2015 and 2014, respectively.

Credit Facility

In August 2015, we entered into a $1.0 billion, 5-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, 2015, we had no outstanding borrowings and were in compliance with all covenants under this facility.

In March 2013, we entered into a $750.0 million 364-day senior unsecured revolving credit facility. In March 

2014, the revolving credit facility expired and was not renewed.

Financing Arrangement

During 2015 we recorded a financing obligation in relation to the amendment of our lease agreement of Eisai's 
oral solid dose products manufacturing facility in RTP, North Carolina where we manufacture our and Eisai's oral solid 
dose products. As of December 31, 2015, the financing obligation totaled approximately $19.8 million. For 
additional information, please read Note 10, 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)
2016
2017
2018
2019
2020
2021 and thereafter

Total

As of December 31, 2015
3.2
$
3.2
553.2
—
1,500.0
4,500.0
6,559.6

$

The fair value of our debt is disclosed in Note 7, Fair Value Measurements to these consolidated financial 

statements.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Table of Contents

12.  

 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 stockholders 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 2015, 2014 and 2013.

Common Stock

The following table describes the number of shares authorized, issued and outstanding of our common stock 

as of December 31, 2015 and 2014:

(In millions)
Common stock

Authorized

Issued

1,000.0

241.2

Outstanding
218.6

Authorized

Issued

Outstanding

1,000.0

257.1

234.6

As of December 31, 2015

As of December 31, 2014

Share Repurchases

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). As of December 31, 2015, the 2015 Share Repurchase Program was 
completed and 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 of our common 
stock (2011 Share Repurchase Program), which has been used principally to offset common stock issuances under 
our share-based compensation plans. The 2011 Share Repurchase Program does not have an expiration date. 
During 2014, we purchased approximately 2.9 million shares of common stock at a cost of $886.8 million under our 
2011 Share Repurchase Program. We did not repurchase any shares of common stock under our 2011 Share 
Repurchase Program during the year ended December 31, 2015 and have approximately 1.3 million shares 
remaining available for repurchase under this authorization.

13.  

 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

Unrealized Gains
(Losses) on Cash
Flow Hedges

Unfunded Status
of Postretirement
Benefit Plans

Translation
Adjustments

Total

Balance, December 31, 2014

$

(0.4) $

71.7 $

(31.6) $

(99.2) $

(59.5)

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) $

(1.7)

110.8

(6.2)

(96.4)

6.5

1.3

(172.3)

—

(171.0)

—

(6.2)

(61.5)

(96.4)

10.2 $

(37.8) $

(195.6) $

F- 37

(164.5)

(224.0)

 
Table of Contents

(In millions)

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Unrealized Gains
(Losses) on
Securities
Available for Sale

Unrealized Gains
(Losses) on Cash
Flow Hedges

Unfunded Status
of Postretirement
Benefit Plans

Translation
Adjustments

Total

Balance, December 31, 2013

$

5.6 $

(23.7) $

(19.6) $

10.0 $

(27.7)

Other comprehensive
income (loss) before
reclassifications
Amounts reclassified from
accumulated other
comprehensive income
(loss)

Net current period other
comprehensive income (loss)

Balance, December 31, 2014

$

0.4

101.7

(12.0)

(109.2)

(19.1)

(6.4)

(6.3)

—

—

(6.0)

(0.4) $

95.4

71.7 $

(12.0)

(31.6) $

(109.2)

(99.2) $

(12.7)

(31.8)

(59.5)

(In millions)

Unrealized Gains
(Losses) on
Securities
Available for Sale

Unrealized Gains
(Losses) on Cash
Flow Hedges

Unfunded Status
of Postretirement
Benefit Plans

Translation
Adjustments

Total

Balance, December 31, 2012

$

4.2 $

(10.7) $

(21.7) $

(27.1) $

(55.3)

Other comprehensive
income (loss) before
reclassifications
Amounts reclassified from
accumulated other
comprehensive income
(loss)

Net current period other
comprehensive income (loss)

Balance, December 31, 2013

$

11.8

(26.7)

(10.4)

13.7

1.4

5.6 $

(13.0)

(23.7) $

2.1

—

2.1

(19.6) $

37.1

24.3

—

37.1

10.0 $

3.3

27.6

(27.7)

The following table summarizes the amounts reclassified from accumulated other comprehensive income:

(In millions)

Income Statement Location

2015

2014

2013

Gains (losses) on securities
available for sale

Other income (expense)
Income tax benefit
(expense)

$

(2.0) $

9.9 $

0.7

(3.5)

Amounts Reclassified from
Accumulated Other Comprehensive Income

For the Years Ended December 31,

Gains (losses) on cash flow
hedges

Revenues

Other income (expense)
Income tax benefit
(expense)

173.2

(0.1)

(0.8)

6.8

—

(0.5)

15.9

(5.5)

(13.2)

—

(0.5)

Total reclassifications, net of
tax

$

171.0 $

12.7 $

(3.3)

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Table of Contents

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

14.  

 Earnings per Share

Basic and diluted earnings per share are calculated as follows:

(In millions)
Numerator:

For the Years Ended December 31,

2015

2014

2013

Net income attributable to Biogen Inc.

$

3,547.0 $

2,934.8 $

1,862.3

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

230.7

0.1
0.3
0.1
0.5
231.2

236.4

0.1
0.5
0.2
0.8
237.2

236.9

0.3
0.8
0.3
1.4
238.3

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, 2015, 2014 and 2013, reflects, on a weighted average 
basis, the repurchase of 4.6 million shares, 1.0 million shares and 0.9 million shares, respectively, of our common 
stock under our share repurchase authorizations.

15.   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
Reversal of previously accrued incentive compensation
included in restructuring charges

Subtotal

Capitalized share-based compensation costs

Share-based compensation expense included in total cost
and expenses

Income tax effect

For the Years Ended December 31,

2015

2014

2013

$

88.6 $

127.3

102.1 $
150.3

(8.6)
207.3
(11.0)

196.3
(55.8)

—
252.4
(10.0)

242.4
(72.2)

95.6
160.3

—
255.9
(9.8)

246.1
(73.3)

Share-based compensation expense included in net income
attributable to Biogen Inc.

$

140.5 $

170.2 $

172.8

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Table of Contents

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)
Stock options
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,

2015

2014

2013

$

— $

— $

38.1
119.0
22.4
13.9
13.9
207.3
(11.0)

37.4
115.4
65.5
21.9
12.2
252.4
(10.0)

0.6
32.8
103.5
109.8
—
9.2
255.9
(9.8)

$

196.3 $

242.4 $

246.1

Windfall tax benefits from vesting of stock awards, exercises of stock options and ESPP participation were 

$78.2 million, $96.4 million and $73.5 million in 2015, 2014 and 2013, respectively. These amounts have been 
calculated under the alternative transition method.

As of December 31, 2015, unrecognized compensation cost related to unvested share-based compensation 
was approximately $184.3 million, net of estimated forfeitures. We expect to recognize the cost of these unvested 
awards over a weighted-average period of 1.8 years.

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. 2008 Amended and 
Restated Omnibus Equity Plan (2008 Omnibus Plan); and (iii) the Biogen Inc. 2015 Employee Stock Purchase Plan 
(ESPP). 

Directors Plan

In May 2006, our stockholders 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, restricted stock 
units, 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 stockholders approved an amendment to 
extend the term of the 2006 Directors Plan until June 10, 2025.

Omnibus Plans

In June 2008, our stockholders approved the 2008 Omnibus Plan for share-based awards to our employees. 

Awards granted from the 2008 Omnibus Plan may include stock options, shares of restricted stock, restricted stock 
units, performance shares, shares of phantom stock, 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 issuance under the 2008 Omnibus Plan consist of 15.0 
million shares reserved for this purpose, plus shares of common stock that remained available for issuance under 
our 2005 Omnibus Equity Plan on the date that our stockholders approved the 2008 Omnibus Plan, plus shares that 
were subject to awards under the 2005 Omnibus Equity Plan which remain unissued upon the cancellation, 
surrender, exchange or termination of such awards. The 2008 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.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

We have not made any awards pursuant to the 2005 Omnibus Equity Plan since our stockholders approved the 
2008 Omnibus Plan, and do not intend to make any awards pursuant to the 2005 Omnibus Equity Plan in the future, 
except that unused shares under the 2005 Omnibus Equity Plan have been carried over for use under the 2008 
Omnibus 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 2015, 2014 and 
2013. As of December 31, 2015, 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, 2014

Granted
Exercised
Cancelled

Outstanding at December 31, 2015

Shares

221,000 $
— $
(114,000) $
— $
107,000 $

Weighted
Average
Exercise
Price

56.98
—
59.82
—
53.94

The total intrinsic values of options exercised in 2015, 2014 and 2013 totaled $38.0 million, $42.7 million, 

and $86.2 million, respectively. The aggregate intrinsic values of options outstanding as of December 31, 2015 
totaled $27.0 million. The weighted average remaining contractual term for options outstanding as of December 31, 
2015 was 3.2 years. 

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,

2015

2014

2013

$
$

11.9 $
6.3 $

13.0 $
8.5 $

29.4
28.1

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Table of Contents

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

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 2015 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, 2014

Granted (a)
Vested
Forfeited

Unvested at December 31, 2015

Shares

403,000 $
185,000 $
(277,000) $
(42,000) $
269,000 $

Weighted
Average
Grant Date
Fair Value

219.29
493.43
165.63
294.85
339.89

(a)  MSUs granted in 2015 include approximately 8,000, 19,000, 24,000 and 34,000 MSUs issued in 2015 based upon the 

attainment of performance criteria set for 2014, 2013, 2012 and 2011, respectively, in relation to awards granted in those 
years. The remainder of MSUs granted during 2015 include awards granted in conjunction with our annual awards made in 
February 2015 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.

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 2015, 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 $277.35 - $426.27 $280.88 - $335.65
60 calendar day average stock price on grant date
Weighted-average per share grant date fair value

**
$493.43

**
$395.22

2015
—%
31.0% - 33.2%
0.2% - 1.0%

2014
—%
31.7% - 35.1%
0.1% - 0.7%

2013
—%
21.7% - 25.7%
0.1% - 0.7%
**
$150.33 - $240.14
$193.45

The total fair values of MSUs vested in 2015, 2014 and 2013 totaled $109.0 million, $117.4 million, and 

$50.9 million, respectively.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

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 2015 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, 2014

Granted (a)
Vested
Forfeited

Unvested at December 31, 2015

Shares

335,000
115,000
(222,000)
(36,000)
192,000

(a)  CSPUs granted in 2015 include approximately 48,000 CSPUs issued in 2015 based upon the attainment of performance 
criteria set for 2014 in relation to awards granted in 2014. The remainder of the CSPUs granted in 2015 include awards 
granted in conjunction with our annual awards made in February 2015 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.

The total cash paid in settlement of CSPUs vested in 2015, 2014 and 2013 totaled $79.8 million, $92.8 

million, and $48.3 million, respectively.  

Performance-vested Restricted Stock Units (PUs)

Beginning in the first quarter of 2014, we revised our long term incentive program to include a new type of 
award granted to certain employees in the form of restricted stock units 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 cash settled performance units, 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.

The following table summarizes our PU activity:

Unvested at December 31, 2014

Granted (a)
Vested
Forfeited

Unvested at December 31, 2015

F- 43

Shares

57,000
89,000
(33,000)
(10,000)
103,000

Table of Contents

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

(a)  PUs granted in 2015 include approximately 42,000 PUs issued in 2015 based upon the attainment of performance 

criteria set for 2014 in relation to awards granted in 2014. The remainder of the PUs granted in 2015 include awards 
granted in conjunction with our annual awards made in February 2015 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.

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, 2014

Granted (a)
Vested
Forfeited

Unvested at December 31, 2015

Shares
1,137,000 $
459,000 $
(626,000) $
(160,000) $
810,000 $

Weighted
Average
Grant Date
Fair Value

221.01
388.88
190.65
302.35
323.87

(a)  RSUs granted in 2015 primarily represent RSUs granted in conjunction with our annual awards made in February 2015 and 
awards made in conjunction with the hiring of new employees. RSUs granted in 2015 also include approximately 7,000 
RSUs granted to our Board of Directors.

RSUs granted in 2014 and 2013 had weighted average grant date fair values of $321.72 and $176.53, 

respectively.

The total fair values of RSUs vested in 2015, 2014 and 2013 totaled $239.7 million, $281.1 million, and 

$209.7 million, respectively.  

Employee Stock Purchase Plan (ESPP)

In June 2015, our stockholders approved the Biogen Inc. 2015 ESPP (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,

2015

78,000
98,000
19.3
30.0 $

2014
**
180,000
**

46.4 $

2013
**
245,000
**

38.7

$
$

F- 44

 
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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

16.   

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):

Domestic
Foreign
Total

Income tax expense (benefit):
Current:
Federal
State
Foreign
Total
Deferred:
Federal
State
Foreign
Total

Total income tax expense

For the Years Ended December 31,

2015

2014

2013

3,386.7 $
1,380.6
4,767.3 $

2,557.4 $
1,389.2
3,946.6 $

1,953.0
527.6
2,480.6

1,214.1 $
38.6
54.5
1,307.2

(129.6) $
(1.9)
(14.1)
(145.6)
1,161.6 $

1,159.5 $
65.2
73.4
1,298.1

(280.9) $
(21.0)
(6.3)
(308.2)
989.9 $

700.9
98.4
46.8
846.1

(200.6)
(35.9)
(8.6)
(245.1)
601.0

$

$

$

$

$

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,

2015

2014

$

$

$

$

189.3 $
243.9
328.3
24.7
63.8
35.8
(14.1)
871.7 $

(440.1) $
(102.7)
(542.8) $

69.0
217.3
251.7
20.6
86.0
60.0
(11.5)
693.1

(432.8)
(107.0)
(539.8)

In accordance with ASU No. 2015-17, at December 31, 2015 we reclassified $137.1 million of our deferred tax 

assets classified as current to noncurrent and $1.6 million of our deferred tax liabilities classified as current to 
noncurrent in our December 31, 2014 consolidated balance sheet, to conform our prior year presentation to our 
current year presentation.

In addition to deferred tax assets and liabilities, we have recorded prepaid tax and deferred charges related to 
intercompany transactions. As of December 31, 2015 and 2014, the total deferred charges and prepaid taxes were 
$697.9 million and $238.9 million, respectively.

F- 45

 
 
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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

During 2013, we recorded a deferred charge of $203.7 million in connection with an intercompany transfer of 

the intellectual property for ZINBRYTA. The net book value of this deferred charge as of December 31, 2015 and 
2014 was $166.3 million and $179.9 million, respectively. The deferred charge will be amortized to income tax 
expense over the economic life of the ZINBRYTA program. Our regulatory submissions in Europe and the U.S. have 
been accepted for review by the relevant authorities. If the ZINBRYTA applications are not approved, we may have to 
accelerate the amortization of this deferred charge and record an expense equal to its remaining net book value.

Tax Rate

A reconciliation between the U.S. federal statutory tax rate and our effective tax rate is summarized as follows:

Statutory rate
State taxes
Taxes on foreign earnings
Credits and net operating loss utilization
Purchased intangible assets
Manufacturing deduction
Other permanent items
Contingent consideration and other

Effective tax rate

For the Years Ended December 31,

2015

2014

2013

35.0%
0.5
(10.0)
(1.3)
1.0
(1.8)
0.7
0.3
24.4%

35.0%
1.2
(9.5)
(1.1)
1.2
(1.8)
0.5
(0.4)
25.1%

35.0%
3.1
(6.7)
(2.6)
1.5
(6.6)
0.8
(0.3)
24.2%

Our effective tax rate for 2015 compared to 2014 benefited from lower anticipated taxes on foreign earnings 
and reflects a $27.0 million benefit from the 2015 remeasurement of one of our uncertain tax positions, described 
below under "Accounting for Uncertainty in Income Taxes".

Our effective tax rate for 2014 compared to 2013 increased primarily as a result of the absence of a benefit 

related to the 2013 change in our uncertain tax position related to our U.S. federal manufacturing deduction and our 
unconsolidated joint business described below under "Accounting for Uncertainty in Income Taxes", lower current year 
expenses eligible for the orphan drug credit and a lower relative manufacturing deduction due to unqualified 
products, partially offset by a higher percentage of our 2014 income being earned outside the U.S.

As of December 31, 2015, we had net operating losses and general business credit carry forwards for federal 
income tax purposes of approximately $25.3 million and $127.6 million, respectively, which begin to expire in 2020. 
Additionally, for state income tax purposes, we had net operating loss carry forwards of approximately $91.7 million, 
which begin to expire in 2016. For state income tax purposes, we also had research and investment credit carry 
forwards of approximately $125.5 million, which begin to expire in 2016. For foreign income tax purposes, we had 
$53.4 million of net operating loss carryforwards, which 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 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 
financial position and results of operations.

As of December 31, 2015, undistributed foreign earnings of non-U.S. subsidiaries included in consolidated 
retained earnings and other basis differences aggregated approximately $6.0 billion. We intend to reinvest these 
earnings indefinitely in operations outside the U.S. The residual U.S. tax liability, if cumulative amounts were 
repatriated, would be between $1.5 billion to $2.0 billion as of December 31, 2015.

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Table of Contents

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

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,

2015

2014

2013

$

131.5 $

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
Settlements

Balance at December 31,

$

10.5
19.5
(49.9)
(1.2)
(42.5)
67.9 $

110.1 $

20.8
86.1
(23.4)
(1.6)
(60.5)
131.5 $

125.9
11.9
71.7
(92.1)
(1.9)
(5.4)
110.1

We and our subsidiaries are routinely examined by various taxing authorities. We file income tax returns in the 

U.S. federal jurisdiction, various U.S. states, and foreign jurisdictions. With few exceptions, including the proposed 
disallowance we discuss below, 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 2004. 

Included in the balance of unrecognized tax benefits as of December 31, 2015, 2014 and 2013 are $15.7 
million, $53.6 million and $32.5 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 2015, we recognized a net interest expense of $3.1 million. During 2014, we recognized net interest 
expense of $4.1 million. In 2013, we recognized a net interest expense of approximately $4.5 million. We have 
accrued approximately $12.5 million and $17.6 million for the payment of interest as of December 31, 2015 and 
2014, respectively.

In March 2015, we received a final assessment from the Danish Tax Authority (SKAT) for fiscal 2009, regarding 

withholding taxes and the treatment of certain intercompany transactions involving our Danish affiliate and another 
of our affiliates. The audits of our tax filings for 2010 through 2013 are not completed but have been prepared in a 
manner consistent with prior filings, with similar transactions. In December 2015, we received draft assessments for 
these periods. The total amount assessed for all periods is $60.9 million, including interest. For all periods 
potentially under dispute, we believe that positions taken in our tax filings are valid and we are contesting the 
assessment vigorously.  

Federal Uncertain Tax Positions

During 2013, we received updated technical guidance from the IRS concerning our current and prior year filings 
and calculation of our U.S. federal manufacturing deduction and overall tax classification of our unconsolidated joint 
business. Based on this guidance we reevaluated the level of our unrecognized benefits related to uncertain tax 
positions, and recorded a $49.8 million income tax benefit. This benefit is for a previously unrecognized position and 
relates to years 2005 through 2012. We recorded an offsetting expense of $11.3 million for non-income based state 
taxes, which is recorded in other income (expense) in our consolidated statements of income. 

In October 2011, in conjunction with our examination, the IRS proposed a disallowance of approximately $130 

million in deductions for tax years 2007, 2008 and 2009 related to payments for services provided by our wholly 
owned Danish subsidiary located in Hillerød, Denmark. We believe that these items represent valid deductible 
business expenses and are vigorously defending our position. We have initiated a mutual agreement procedure 
between the IRS and SKAT for the years 2001 through 2009, in an attempt to reach agreement on the issue. In 
addition, we have applied for a bilateral advanced pricing agreement for the years 2010 through 2014 to resolve 
similar issues for the subsequent years.

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Table of Contents

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

During the year ended December 31, 2015, the net effect of adjustments to our uncertain tax positions was a 
net benefit of approximately $25.0 million. It is reasonably possible that we will adjust the value of our uncertain tax 
positions related to our unconsolidated joint business and certain transfer pricing issues as we receive additional 
information from various taxing authorities, including reaching settlements with the authorities. In addition, the IRS 
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.

17.  

 Other Consolidated Financial Statement Detail

Supplemental Cash Flow Information

Supplemental disclosure of cash flow information for the years ended December 31, 2015, 2014 and 2013, is 

as follows:

(In millions)
Cash paid during the year for:

Interest
Income taxes

For the Years Ended December 31,

2015

2014

2013

$
$

39.1 $
1,674.8 $

41.2 $
1,163.2 $

53.6
643.2

Non-cash Investing and Financing Activity

In the fourth quarter of 2015, we accrued $300.0 million upon reaching $7.0 billion in total cumulative sales of 

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 2016. For additional information related to this transaction, please read Note 21, 
Commitment and Contingencies to these consolidated financial statements. 

In connection with the construction of our manufacturing facility in Solothurn, Switzerland, we accrued charges 

related to processing equipment and engineering services of approximately $59.1 million in our consolidated 
balance sheet. For additional information related to this transaction, please read Note 10, Property, Plant and 
Equipment to these consolidated financial statements. 

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 related to this transaction, 
please read Note 2, Acquisitions to these consolidated financial statements.

In July and November 2013, the construction of two office buildings in Cambridge, Massachusetts was 

completed and we started leasing the facilities. Upon completion of the construction of the buildings, we determined 
that we were no longer considered the owner of the buildings because we did not have any unusual or significant 
continuing involvement. Consequently, we derecognized the buildings and their associated financing obligation of 
approximately $161.5 million from our consolidated balance sheet. 

Other Income (Expense), Net

Components of other income (expense), net, are summarized as follows:

(In millions)
Interest income
Interest expense
Impairments on investments
Gain (loss) on investments, net
Foreign exchange gains (losses), net
Other, net

Total other income (expense), net

For the Years Ended December 31,

2015

2014

2013

$

$

22.1 $
(95.5)
—
(3.8)
(32.7)
(13.8)
(123.7) $

12.2 $
(29.5)
—
11.8
(11.6)
(8.7)
(25.8) $

8.2
(31.9)
(2.8)
21.7
(15.2)
(14.9)
(34.9)

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Table of Contents

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Other Current Assets

Other current assets includes prepaid taxes totaling approximately $550.6 million and $57.6 million as of 

December 31, 2015 and 2014, respectively.

Accrued Expenses and Other

Accrued expenses and other consists of the following:

(In millions)
Revenue-related reserves for discounts and allowances
Current portion of contingent consideration obligations
Employee compensation and benefits
Royalties and licensing fees
Deferred revenue
Other

Total accrued expenses and other

Other Long-Term Liabilities

Other long-term liabilities consists of the following:

(In millions)
Contingent consideration obligation
Employee compensation and benefits
Other

Total other long-term liabilities

Pricing of TYSABRI in Italy - AIFA

As of December 31,

2015

2014

518.1 $
504.7
270.8
167.9
55.7
579.6
2,096.8 $

359.2
265.5
393.8
172.4
120.9
505.9
1,817.7

As of December 31,

2015

2014

301.3 $
235.4
369.1
905.8 $

200.0
200.7
249.4
650.1

$

$

$

$

In the fourth quarter of 2011, Biogen Italia SRL (formerly Biogen Idec 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 December 2011, 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. That appeal is still pending. 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 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. The agreement 
was sent to the Avvocatura Generale dello Stato (Attorney General) for its opinion. 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 October 2014, we 
proposed a revised settlement for the period from February 2009 through January 2013 of EUR35.6 million to be 
paid in one payment. AIFA and Biogen Italia SRL are still discussing a possible resolution for the period from 
February 2009 through January 2013.

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 beginning February 2013 
that were previously deferred. 

We have approximately EUR75 million recorded as accrued expenses and long-term deferred revenue in our 

consolidated balance sheets for this matter as of December 31, 2015 and 2014, respectively.

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

18.  

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 SubOne AG

In 2007, we entered into a collaboration agreement with Neurimmune SubOne AG (Neurimmune), a subsidiary 

of Neurimmune AG, for the development and commercialization of antibodies for the treatment of Alzheimer’s 
disease. Neurimmune conducts research to identify potential therapeutic antibodies and we are responsible for the 
development, manufacturing and commercialization of all products. Our anti-amyloid beta antibody, aducanumab 
(BIIB037), for the treatment of Alzheimer’s disease resulted from this collaboration. In September 2015, we 
announced that the first patient had been enrolled in a Phase 3 trial for aducanumab, which triggered a $60.0 
million milestone payment due to Neurimmune. As we consolidate the financial results of Neurimmune, we 
recognized this payment as a charge to noncontrolling interest in the third quarter of 2015. Based upon our current 
development plans for aducanumab, we may pay Neurimmune up to $275.0 million in remaining milestone 
payments. We may also pay royalties in the low-to-mid-teens on sales of any resulting commercial products.

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 are 
required to fund 100% of the research and development costs incurred in support of the collaboration agreement. 
Accordingly, we consolidate the results of Neurimmune.

Amounts that are incurred by Neurimmune for research and development expenses in support of the 

collaboration that we reimburse are reflected in research and development expense in our consolidated statements 
of income.  During the years ending December 31, 2015, 2014 and 2013, these amounts were immaterial. 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. 

The assets and liabilities of Neurimmune are not significant to our 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.

Rodin Therapeutics, Inc. 

In December 2015, we paid $8.0 million for preferred stock in Rodin Therapeutics, Inc. (Rodin) and entered 

into an option and collaboration agreement which gives us the right to purchase all remaining outstanding shares of 
Rodin, at any time until 35 days after acceptance of an Investigational New Drug (IND) application by the FDA. Rodin 
is a discovery-stage biotechnology company developing novel therapeutics for neurological disorders. We committed 
to make additional investments in Rodin’s preferred shares of $4.0 million, if certain development milestones are 
achieved. If we exercise our option to purchase the outstanding shares of Rodin, we could pay additional amounts 
upon achievement of clinical and commercial milestones. 

Through our fixed price option to purchase Rodin, purchases of equity, our collaboration and presence on the 

program advisory committee and Rodin Board of Directors, we are deemed to be the primary beneficiary of Rodin, a 
variable interest entity. Therefore, we consolidate the results of Rodin. As part of the initial consolidation of Rodin, 
we recorded an IPR&D intangible asset of approximately $8.7 million and assigned approximately $10.9 million to 
minority interest in our stockholder's equity. 

The assets and liabilities of Rodin are not significant to our financial position or results of operations as it is a 

research and development organization. We have provided no financing to Rodin other than contractually required 
amounts. 

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

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, 2015 and 2014, the total carrying value of our investments in biotechnology companies 

totaled $29.2 million and $7.9 million, respectively. Our maximum exposure to loss related to these variable interest 
entities is limited to the carrying value of our investments.

We have 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. 

19.  

 Collaborative and Other Relationships

In connection with our business strategy, we have entered into various collaboration agreements which 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 receivables 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 collaborate with Genentech on the development and commercialization of RITUXAN. In addition, in the U.S., 

we share operating profits and losses relating to GAZYVA with Genentech. 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 the 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.

Canada

We and Genentech have assigned our rights under our collaboration agreement with respect to Canada to the 

Roche Group.

Outside the U.S. and Canada

We have granted Genentech exclusive rights to develop, commercialize and market RITUXAN outside the U.S. 

and Canada. Under the terms of separate sublicense agreements between Genentech and the Roche Group, 
development and commercialization of RITUXAN outside the U.S. and Canada is the responsibility of the Roche 
Group and its sublicensees. We do not have any direct contractual arrangements with the Roche Group or it 
sublicensees.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Under the terms of the collaboration agreement, the Roche Group pays us royalties between 10% and 12% on 

sales of RITUXAN outside the U.S. and Canada, with the royalty period lasting 11 years from the first commercial 
sale of RITUXAN on a country-by-country basis. The royalty periods for the substantial portion of the royalty-bearing 
sales in the rest of world markets expired during 2012 and 2013. We expect future revenue on sales of RITUXAN in 
the rest of world will be limited to our share of pre-tax co-promotion profits in Canada.

GAZYVA

Prior to FDA approval of GAZYVA, we recognized 35% of the development and commercialization expenses as 

research and development expense and selling, general and administrative expense, respectively, in our 
consolidated statements of income. After GAZYVA was approved by the FDA in the fourth quarter of 2013, we began 
to recognize our share of the development and commercialization expenses as a reduction of our share of pre-tax 
profits in revenues from unconsolidated joint business. 

Commercialization of GAZYVA will impact our percentage of the co-promotion profits for RITUXAN, as 

summarized in the table below.

Ocrelizumab

Genentech is solely responsible for development and commercialization of ocrelizumab, a humanized anti-CD20 

monoclonal antibody currently in development for MS, and funding future costs. Genentech cannot develop 
ocrelizumab in CLL, NHL or RA. We will receive tiered royalties between 13.5% and 24% on U.S. net sales of 
ocrelizumab if approved for commercial sale by the FDA. There will be a 50% reduction to these royalties if a 
biosimilar to ocrelizumab is approved in the U.S. In addition, we will receive a 3% royalty on worldwide net sales of 
ocrelizumab outside the U.S., with the royalty period lasting 11 years from the first commercial sale of ocrelizumab 
on a country-by-country basis.

Commercialization of ocrelizumab will not impact the percentage of the co-promotion profits we receive for 

RITUXAN or GAZYVA.

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 (1) 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 (2) 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.

We expect our share of RITUXAN pre-tax profits in the U.S. to decrease to 39% from 40% if GAZYVA is approved 

by the FDA in RITUXAN-refractory indolent non-Hodgkin’s lymphoma. 

In addition, should the FDA approve an anti-CD20 product other than ocrelizumab 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 38% based on certain events.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

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 2015, 2014, and 2013, our share of operating losses on GAZYVA was 35%.

Unconsolidated Joint Business Revenues

During the first quarter of 2013, we reduced our share of RITUXAN revenues from unconsolidated joint 

business by approximately $49.7 million, of which revenue on sales in the rest of world for RITUXAN was reduced by 
$41.2 million and pre-tax profits in the U.S. were reduced by $8.5 million, to reflect our share of the royalties and 
interest awarded to Hoechst in its arbitration with Genentech. 

Revenues from unconsolidated joint business 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 (1)
Revenue on sales in the rest of world for RITUXAN

Total unconsolidated joint business revenues

(1) GAZYVA sales began in the fourth quarter of 2013.

For the Years Ended December 31,

2015

2014

2013

$

$

1,269.8 $

1,117.1 $

1,087.3

69.4

78.3

38.7

1,339.2 $

1,195.4 $

1,126.0

In 2015, 2014, and 2013, the 40% profit-sharing threshold was met during the first quarter.

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. We incurred $25.7 million in development expense for 2013. 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 unconsolidated joint business. 

Elan

On April 2, 2013, we acquired full ownership of all remaining rights to TYSABRI from Elan that we did not 
already own or control. Upon the closing of the transaction, our collaboration agreement with Elan was terminated. 
For additional information related to this transaction, please read Note 2, Acquisitions to these consolidated financial 
statements.

We previously collaborated with Elan on the development, manufacture and commercialization of TYSABRI. 

Under the terms of our collaboration agreement, we manufactured TYSABRI and collaborated with Elan on the 
product’s marketing, commercial distribution and ongoing development activities. The agreement was designed to 
effect an equal sharing of profits and losses generated by the activities of our collaboration. Under the agreement, 
however, once sales of TYSABRI exceeded specific thresholds, Elan was required to make milestone payments to us 
in order to continue sharing equally in the collaboration’s results. 

In the U.S., we previously sold TYSABRI to Elan who then sold the product to third-party distributors. Our sales 

price to Elan in the U.S. was set prior to the beginning of each quarterly period to effect an approximate equal 
sharing of the gross profit between Elan and us. We recognized revenue for sales in the U.S. of TYSABRI upon Elan’s 
shipment of the product to the third-party distributors, at which time all revenue recognition criteria had been met. 
We incurred manufacturing and distribution costs, research and development expenses, commercial expenses, and 
general and administrative expenses related to TYSABRI. We recorded these expenses to their respective line items 
in our consolidated statements of income when they were incurred. Research and development and sales and 
marketing expenses were shared equally with Elan and the reimbursement of these expenses was recorded as 

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

reductions of the respective expense categories. During 2013, we recorded $11.7 million as a reduction of research 
and development expense resulting from reimbursements from Elan. In addition, for 2013, we recorded $20.6 
million as a reduction of selling, general and administrative expense resulting from reimbursements from Elan.

In the rest of world, we previously were responsible for distributing TYSABRI to customers and were primarily 

responsible for all operating activities. Generally, we recognized revenue for sales of TYSABRI in the rest of world at 
the time of product delivery to our customers. We made payments to Elan which effected an equal sharing of rest of 
world collaboration operating profits. These payments also included the reimbursement we paid to Elan for half of 
the third-party royalties that Elan paid on behalf of the collaboration relating to rest of world sales. These amounts 
were reflected in the collaboration profit sharing line in our consolidated statements of income. For 2013, $85.4 
million was reflected in the collaboration profit sharing line for our collaboration with Elan.

Acorda

In 2009, we entered into a collaboration and license agreement with Acorda Therapeutics, Inc. (Acorda) to 
develop and commercialize products containing fampridine in markets outside the U.S. We also have responsibility 
for regulatory activities and the future clinical development of related products in those markets. 

Under the terms of the collaboration and license agreement, we pay Acorda tiered royalties based on the level 

of ex-U.S. net sales. We may pay up to $375.0 million of additional milestone payments to Acorda, based on the 
successful achievement of certain regulatory and commercial milestones. 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. We will 
capitalize these additional milestones as intangible assets upon achievement of the milestone which will then be 
amortized utilizing an economic consumption model and recognized as amortization of acquired intangible assets. 
Royalty payments are recognized as a cost of goods sold.

In connection with the collaboration and license agreement, we have 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. During the years ending December 31, 2015, 2014 and 2013, total cost of sales related to royalties and 
commercial supply of FAMPRYA reflected in our consolidated statement of income were $30.6 million, $29.2 million 
and $24.3 million, respectively.

Swedish Orphan Biovitrum AB (publ)

In January 2007, we acquired 100% of the stock of Syntonix. Syntonix had previously entered into a 

collaboration agreement with Swedish Orphan Biovitrum AB (publ) (Sobi) to jointly develop and commercialize Factor 
VIII and Factor IX hemophilia products, including ELOCTATE and ALPROLIX. In February 2010, we restructured the 
collaboration agreement and assumed full development responsibilities and costs, as well as manufacturing rights. 
In addition, the cross-royalty rates were reduced and commercial rights for certain territories were changed. As a 
result, we have commercial rights for North America (the Biogen North America Territory) and for rest of the world 
markets outside of, essentially, Europe, North Africa, Russia and certain countries in the Middle East (the Biogen 
Direct Territory). Subject to the exercise of an option right that Sobi controls, Sobi will have commercial rights in, 
essentially, Europe, North Africa, Russia and certain countries in the Middle East (the Sobi Territory). The 
collaboration agreement was amended and restated in April 2014. (References to the collaboration agreement refer 
to the amended and restated collaboration agreement).

In November 2014, Sobi exercised its option to assume final development and commercialization activities in 

the Sobi Territory for ELOCTA (the trade name for ELOCTATE in the E.U.). In July 2015, Sobi exercised its option to 
assume final development and commercialization of ALPROLIX within the Sobi Territory. Upon each exercise of opt-in 
right under the terms of the collaboration agreement, Sobi made a $10.0 million payment in escrow. 

Upon EMA regulatory approval of each such product, Sobi will be liable to reimburse us 50% of the sum of all 

shared manufacturing and development expenses incurred by us from October 1, 2009 through the earlier of the 
date on which Sobi is registered as the marketing authorization holder for the applicable product or 90 days post-
regulatory approval, as well as 100% of certain development expenses incurred exclusively for the benefit of the 
Sobi Territory (the Opt-In Consideration). This reimbursement will be recognized in proportion to collaboration 
revenues, over a ten year period, consistent with the initial patent terms of the products.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

ELOCTA was approved by the EC in November 2015. Through December 31, 2015, approximately $200 million 

in expenditures for ELOCTA, net of the $10.0 million escrow payment discussed above, are reimbursable by Sobi 
under the collaboration agreement due to its election to assume final development and commercialization of ELOCTA 
within the Sobi Territory. Approximately $175 million in expenditures for ALPROLIX may be reimbursable by Sobi 
under the collaboration agreement due to its election to assume final development and commercialization of 
ALPROLIX within the Sobi Territory. The escrow payment made with respect to ALPROLIX will be applied to the 
amount of the Opt-In Consideration to be reimbursed by Sobi upon EMA regulatory approval. 

To effect Sobi’s reimbursement to us for the Opt-In Consideration exceeding the escrow payment for the 
applicable product, the cross-royalty cash payment structure for direct sales in each company’s respective territories 
will be adjusted until the Opt-In Consideration is paid in full (the Reimbursement Period). The mechanism for 
reimbursement is outlined in the table below.

Under the collaboration agreement, cash payments are as follows:

Royalty and Net Revenue Share Rates:
Sobi rate to Biogen on net sales in the
Sobi Territory
Biogen rate to Sobi on net sales in the
Biogen North America Territory
Biogen rate to Sobi on net sales in the
Biogen Direct Territory

Biogen rate to Sobi on net revenue(1) 
from the Biogen Distributor Territory(2)

Method

Royalty

Royalty

Royalty
Net
Revenue
Share

Rates post Sobi Opt-In(3)

Rate prior to 1st
commercial sale in
the Sobi Territory:

Base Rate following
1st commercial sale in
the Sobi Territory:

N/A

2%

2%

10%

10 or 12%

10 or 12%

15 or 17%

50%

Rate during the
Reimbursement
Period:
Base Rate
plus 5%
Base Rate
less 5%
Base Rate
less 5%

Base Rate
less 15%

(1)  Net revenue represents Biogen’s pre-tax receipts from third-party distributors, less expenses incurred by Biogen in the 

conduct of commercialization activities supporting the distributor activities.

(2)  The Biogen Distributor Territory represents Biogen territories where sales are derived utilizing a third-party distributor.

(3)  A credit will be issued to Sobi against its reimbursement of the Opt-in Consideration in an amount equal to the difference in 
the rate paid by Biogen to Sobi on sales in the Biogen territories for certain periods prior to the first commercial sale in the 
Sobi Territory versus the rate that otherwise would have been payable on such sales.

If the reimbursement of the Opt-in Consideration has not been achieved within six years of the first commercial 
sale of such product, we maintain the right to require Sobi to pay any remaining balances due to us within 90 days of 
the six year anniversary date of the first commercial sale.

We expect to recognize the effect of the cash reimbursement as an adjustment to the Base Rate in the table 

above.

Should Sobi terminate the collaboration agreement with respect to ALPROLIX, we will obtain full worldwide 
development and commercialization rights and we will be obligated to pay royalties to Sobi subject to separate 
terms, as defined in the collaboration agreement. In addition, if EMA approval for ALPROLIX is not granted within 18 
months of the filing date, Sobi shall have the right to require that the escrow payment be refunded and revoke its 
option right for such product.

AbbVie Biotherapeutics, Inc. 

We have a collaboration agreement with AbbVie Biotherapeutics, Inc., a subsidiary of AbbVie, Inc. (AbbVie) 

aimed at advancing the development and commercialization of ZINBRYTA in MS. 

Under the agreement, we and AbbVie will conduct ZINBRYTA co-promotion activities in the E.U., U.S. and 
Canada territories (Collaboration Territory), where development and commercialization costs and profits are shared 
equally. We are responsible for all manufacturing activities in the Collaboration Territory.  

In the U.S., AbbVie will recognize revenues on sales to third parties and we will recognize our 50% share of the 

co-promotion profits or losses as a component of total revenues in our consolidated statements of income.  

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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

In the E.U. and Canada, we will reflect revenues on sales to third parties in product revenues, net in our 
consolidated statements of income. We will record the related cost of revenues and sales and marketing expenses 
to their respective line items in our consolidated statements of income when these costs are incurred. The 
reimbursement with AbbVie for the 50% sharing of the co-promotion profits or losses in the E.U. and Canada will be 
recognized in our total costs and expenses. 

Outside of the Collaboration Territory, we are solely responsible for development and commercialization where 

we will pay a tiered royalty to AbbVie on net sales in the low to high teens.

We are the responsible party for manufacturing and research and development activities in both the 

Collaboration Territory and outside the Collaboration Territory and will record these activities to their respective lines 
in our consolidated statements of income, net of any reimbursement of research and development expenditures 
from AbbVie.

During 2015, we made milestone payments of $16.0 million for the development of ZINBRYTA as a result of 
filing for regulatory approval in the U.S. and E.U. during the year. These payments were recorded as research and 
development expense in our consolidated statements of income. We may incur up to an additional $32.0 million of 
milestone payments related to the development of ZINBRYTA, of which $20.0 million is due upon regulatory approval 
in the U.S. and $12.0 million is due upon regulatory approval in the E.U. These future payments will be capitalized 
as an intangible asset in our consolidated balance sheets.

A summary of activity related to this collaboration is as follows:

(In millions)
Total development expense incurred by the collaboration
Biogen’s share of development expense reflected in our
consolidated statements of income

$

$

For the Years Ended
December 31,

2015

2014

2013

113.8 $

117.8 $

133.4

60.8 $

67.4 $

71.0

Ionis Pharmaceuticals, Inc. 

Long-Term Strategic Research Collaboration

In September 2013, we entered into a six year research collaboration with Ionis Pharmaceuticals, Inc. (Ionis), 

formerly known as Isis Pharmaceuticals Inc. under which both companies collaborate to perform discovery level 
research and then develop and commercialize 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 the 
agreement. Once the research has reached a specific stage of development, we will make the determination whether 
antisense is the preferred approach to develop a therapeutic candidate or whether another modality is preferred. If 
antisense is selected, Ionis will continue development and identify a product candidate. If another modality is used, 
we will assume the responsibility for identifying a product candidate and developing it. 

Under the terms of this agreement, we paid Ionis an upfront amount of $100.0 million. Of this payment, we 
recorded prepaid research and discovery services of approximately $25.0 million, representing the value of the Ionis 
full time equivalent employee resources which are required by the collaboration to provide research and discovery 
services to us over the next six years. The remaining $75.0 million of the upfront payment was recorded as research 
and development expense as it represented the purchase of intellectual property that had not reached technological 
feasibility.

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, 2015 and 2014, we triggered milestones 
of $20.0 million and $20.0 million, respectively, related to the advancement of IONIS-SOD1Rx for the treatment of 
ALS and other neurological targets identified.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

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. 

Product Collaborations 

In December, June and January 2012, we entered into three separate exclusive, worldwide option and 
collaboration agreements with Ionis under which both companies will develop and commercialize antisense 
therapeutics for up to three gene targets, Ionis’ product candidates for the treatment of myotonic dystrophy type 1 
(DM1), and the antisense investigational candidate nusinersen (ISIS-SMNRx) for the treatment of spinal muscular 
atrophy (SMA), respectively.

Antisense Therapeutics

Under the terms of the December 2012 agreement relating to the development and commercialization of up to 

three gene targets we provided Ionis with an upfront payment of $30.0 million and will 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 triggered a $10.0 million 
milestone payment. Ionis will be 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 Ionis up to a 
$70.0 million license fee and assume global development, regulatory and commercialization responsibilities. Ionis 
could 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. 

IONIS-DMPKRx

Under the terms of the June 2012 agreement for the DM1 candidate, we provided Ionis with an upfront 

payment of $12.0 million and agreed to make potential additional payments, prior to licensing, of up to $59.0 million 
based on the development of the selected product candidate. During 2015, we amended the agreement to adjust 
the amount of potential additional payments by an additional $4.2 million due to changes in the clinical trial design. 

During 2015, 2014 and 2013, we triggered milestones of $2.8 million, $14.0 million and $10.0 million, 
respectively, related to the selection and advancement of IONIS-DMPKRx to treat DM1. Ionis will be 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 also have an option to license the 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 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. 

During the years ending December 31, 2015, 2014 and 2013, $9.0 million, $10.9 million and $11.2 million, 

respectively, were reflected in research and development expense in our consolidated statements of income. 

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Nusinersen

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Under the terms of the January 2012 agreement for the antisense investigational drug candidate, nusinersen, 

we paid Ionis $29.0 million as an upfront payment. 

During 2014, we amended the agreement to adjust the amount of potential additional payments and terms of 

the exercise of our opt-in right to license nusinersen. Consistent with the initial agreement, Ionis remains 
responsible for conducting the pivotal/Phase 3 trials. We are providing input on the clinical trial design and 
regulatory strategy for the development of nusinersen. During 2015 and 2014, we triggered clinical trial payments of 
$42.8 million and $57.3 million related to the advancement of the program. We are recognizing these payments as 
research and development expenses as the trial costs are incurred. 

During 2015, we amended the agreement and may pay up to an additional $92.0 million due to changes in the 

clinical trial design. 

We may exercise our opt-in right upon completion of and data review of the first successful Phase 2/3 trial or 

completion of both Phase 2/3 trials. An amendment in December 2014 provided for additional opt-in scenarios, 
based on the filing or the acceptance of a new drug application or marketing authorization application with the FDA 
or EMA. Under the amended collaboration agreement, we may pay Ionis up to approximately $325.0 million in a 
license fee and payments, including $100.0 million in payments associated with the clinical development of 
nusinersen prior to licensing, a license fee and $150.0 million in milestone payments upon the achievement of 
certain regulatory milestones as well as royalties on future sales of nusinersen if we successfully develop 
nusinersen after option exercise.

During the years ending December 31, 2015, 2014 and 2013, $74.9 million, $27.7 million and $13.6 million, 

respectively, were reflected in research and development expense in our consolidated statements of income. 

Eisai Co., Ltd. 

BAN2401 and E2609 Collaboration

On March 4, 2014, we entered into a collaboration agreement with Eisai Co., Ltd. (Eisai) to jointly develop and 

commercialize two Eisai product candidates for the treatment of Alzheimer’s disease, BAN2401, a monoclonal 
antibody that targets amyloid-beta aggregates, and E2609, a BACE inhibitor, (Eisai Collaboration Agreement). Under 
the Eisai Collaboration Agreement, Eisai serves as the global operational and regulatory lead for both compounds 
and all costs, including research, development, sales and marketing expenses, will be shared equally by us and 
Eisai. Following marketing approval in major markets, such as the U.S., the E.U. and Japan, we will co-promote 
BAN2401 and E2609 with Eisai and share profits equally. In smaller markets, Eisai will distribute these products 
and pay us a royalty. The Eisai Collaboration Agreement also provides the parties with certain rights and obligations 
in the event of a change in control of either party.  

The Eisai Collaboration Agreement also provides Eisai an option to jointly develop and commercialize 

aducanumab, our anti-amyloid beta antibody candidate for Alzheimer’s disease (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, we will execute a separate collaboration agreement with 
Eisai on terms and conditions that mirror the Eisai Collaboration Agreement.  

Aducanumab Option

Eisai may exercise the Aducanumab Option after either (i) completion of both the current Phase 1b clinical trial 

for aducanumab and the current Phase 2 clinical trial for BAN2401 (Post-Phase 2 Aducanumab Option), or (ii) 
completion of the Phase 3 clinical trial for aducanumab (Post-Phase 3 Aducanumab Option) under certain conditions. 

The consideration we will receive if Eisai exercises the Post-Phase 2 Aducanumab Option depends on the 
development status of BAN2401. If BAN2401 is then determined to advance to Phase 3, we will be entitled to 
receive a single payment from Eisai upon regulatory approval of aducanumab and we will no longer be required to 
pay Eisai any milestone payments for products containing BAN2401 under the Eisai Collaboration Agreement. If the 
development of BAN2401 has instead been terminated, we will receive development and commercial milestone 
payments from Eisai (Post-Phase 2 Aducanumab Milestone Payments). If Eisai does not exercise its Post-Phase 2 
Aducanumab Option, we may elect to terminate the Eisai Collaboration Agreement with respect to BAN2401 but, 
under certain conditions, will have the option to reinstate the Eisai Collaboration Agreement after completion of a 
BAN2401 Phase 3 clinical trial.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

If Eisai exercises its Post-Phase 3 Aducanumab Option, Eisai will be required to pay us all Phase 3 
development and commercialization costs plus a mark-up and an amount equal to any unpaid Post-Phase 2 
Aducanumab Milestone Payments that would have been payable if Eisai had exercised its Post-Phase 2 Aducanumab 
Option. 

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.

Upon the effective date of the Eisai Collaboration Agreement, we paid Eisai $100.0 million and recorded $17.7 

million, reflecting the fair value of the options granted under the Eisai Collaboration Agreement, both of which were 
classified as research and development expense in our consolidated statements of income. During the second 
quarter of 2014, Eisai exercised its option under the Eisai Collaboration Agreement to expand the joint development 
and commercialization activities to include Japan. Upon such exercise, we paid Eisai an additional $35.0 million, and 
recorded $21.6 million as research and development expense in our consolidated statements of income, which 
represented the difference between the payment made upon exercise of the option and the fair value of that option 
recorded as research and development expense upon closing of the agreement in the first quarter of 2014. We 
could pay Eisai up to an additional $1.0 billion under the Eisai Collaboration Agreement based on the future 
achievement of certain development, regulatory and commercial milestones.   

In addition to our arrangements with Eisai, Neurimmune is entitled to milestone and royalty payments related to 

the development and commercialization of aducanumab and certain anti-tau antibodies. For additional information 
regarding our agreement with Neurimmune, please see Note 18, Investments in Variable Interest Entities to these 
consolidated financial statements.

A summary of activity related to this collaboration is as follows:

(In millions)
Total development expense incurred by the collaboration
Biogen’s share of development expense, excluding upfront and
milestone payments, reflected in our consolidated statements of
income

$

$

Sangamo BioSciences, Inc. 

For the Years Ended
December 31,

2015

2014

2013

84.1 $

57.5 $

40.4 $

29.1 $

—

—

On February 22, 2014, we completed an exclusive worldwide research, development and commercialization 
collaboration and license agreement with Sangamo BioSciences, Inc. (Sangamo) under which both companies will 
develop and commercialize product candidates for the treatment of two inherited blood disorders, sickle cell disease 
and beta-thalassemia. The collaboration is currently in the research stage of development.

Under the terms of the agreement, we paid Sangamo an upfront payment of $20.0 million in cash, with 

additional payments of up to approximately $300.0 million based on the achievement of certain development, 
regulatory and commercial milestones, plus royalties based on sales. We recorded the $20.0 million upfront 
payment as research and development expense. Under this arrangement, Sangamo will be responsible for identifying 
a product candidate for the treatment of beta-thalassemia and advancing that candidate through a completed Phase 
1 human clinical trial, at which point we would assume responsibility for development. We will jointly develop a sickle 
cell disease candidate through the potential filing of an investigative new drug application, after which we would 
assume clinical responsibilities. We will lead the global development and commercialization efforts and Sangamo 
will have the option to assume co-promotion responsibilities in the U.S.

During the years ending December 31, 2015 and 2014, $13.6 million and $28.9 million, respectively, of 

expense was reflected in our consolidated statements of income.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Applied Genetic Technologies Corporation

On July 2, 2015, we announced a collaboration and license agreement to develop gene-based therapies for 

multiple ophthalmic diseases with Applied Genetic Technologies Corporation (AGTC). The collaboration will focus 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). The 
agreement also includes options for early stage discovery programs in two ophthalmic diseases and one non-
ophthalmic condition, as well as an equity investment in AGTC.

During the third quarter of 2015, we made an upfront payment of $124.0 million, which included 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 $58.4 million of prepaid research and development expenditures were 
recorded in investments and other assets in our consolidated balance sheets and will be expensed as the services 
are provided. During 2015, we recorded $54.5 million as research and development expense associated with AGTC 
in our consolidated statements of income, including the $35.6 million total licensing and other fees, $6.5 million in 
research and development services, a $7.5 million premium on our equity investment and a $5.0 million clinical 
development milestone related to XLRS. 

AGTC is eligible to receive development, regulatory and commercial milestone payments aggregating in excess 
of $1.1 billion, which includes up to $472.5 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. 

We were granted worldwide commercialization rights for the XLRS and XLRP programs. AGTC has an option to 

share development costs and profits after the initial clinical trial data are available, and an option to co-promote the 
second of these products to be approved in the U.S. AGTC will lead the clinical development programs of XLRS 
through product approval and of XLRP through the completion of first-in-human trials. We will support the clinical 
development costs, subject to certain conditions, following the first-in-human study for XLRS and IND-enabling 
studies for XLRP. Under the manufacturing license, we have 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.

Mitsubishi Tanabe Pharma Corporation

On September 9, 2015, we announced an agreement with Mitsubishi Tanabe Pharma Corporation (MTPC) to 

exclusively license amiselimod (MT-1303), a late stage experimental medicine with potential in multiple autoimmune 
indications. Amiselimod is an oral compound that targets the sphingosine 1-phosphate receptor. Under the terms of 
the agreement, we will receive worldwide rights to amiselimod, excluding Asia. We will be responsible for global 
commercialization and development costs except for costs related to the Asian territories, which are the 
responsibility of MTPC. 

During the fourth quarter of 2015, the agreement became effective and we made an upfront payment of $60.0 
million, which was recorded as research and development expense in our consolidated statements of income. In the 
future we may pay up to approximately $484.0 million in milestone payments for multiple indications and territories, 
along with average royalties in the mid- to high-teen percentages of annual net sales. MTPC has the right to 
participate in our global clinical trials related to amiselimod and has an option to co-promote non-MS indications in 
the U.S. 

Other Research and Discovery Arrangements 

During the years ended December 31, 2015 and 2014, we entered into several research, discovery and other 

related arrangements that resulted in $9.7 million and $40.0 million, respectively, recorded as research and 
development expense in our consolidated statements of income. 

These additional arrangements include the potential for future milestone payments based on clinical and 

commercial development over a period of several years. 

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Samsung Bioepis

In February 2012, we entered into a joint venture agreement with Samsung BioLogics Co. Ltd. (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, 2015, our ownership interest is approximately 9%, which reflects our additional 
contribution of 6.3 billion South Korean won (approximately $5.7 million) in the first quarter of 2015 and 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 agreement plus a rate that will represent 
their return on capital.

Samsung Biologics has the power to direct the activities of Samsung Bioepis which will most significantly and 
directly impact its economic performance. 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. During 2015, our share of losses exceed the carrying value of our 
investment. We suspended recognizing additional losses and will continue to do so unless we commit to providing 
additional funding. As of December 31, 2014, the carrying value of our investment in Samsung Bioepis totaled 9.1 
billion South Korean won (approximately $8.6 million), which was classified as a component of investments and 
other assets in our consolidated balance sheets. 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 years ended 
December 31, 2015, 2014 and 2013, we recognized a loss on our investment of $12.5 million, $15.1 million and 
$17.2 million, respectively.

Commercial Agreement

On December 17, 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, anti-tumor necrosis factor 
(TNF) biosimilar product candidates in Europe and in the case of one anti-TNF biosimilar, Japan. Under the terms of 
this agreement, we have paid $46.0 million, which has been recorded as a research and development expense in 
our consolidated statements of income as the programs they relate to had not achieved regulatory approval. 
Samsung Bioepis is eligible to receive an additional $75.0 million in additional milestones, including $25.0 million 
upon the regulatory approval of each anti-TNF biosimilar product candidate in the E.U. In January 2016, the EC 
approved the MAA for BENEPALI for marketing in the E.U. 

Upon commercialization, we will reflect revenues on sales to third parties in product revenues, net in our 
consolidated statements of income. We will 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. A 50% profit 
share with Samsung Bioepis will be recognized in costs and expenses. 

License Agreement

Simultaneous with the formation of Samsung Bioepis, we entered into a license agreement with Samsung 
Bioepis. Under the terms of the 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. 

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Other Services

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

In addition, we entered into a technical development services agreement and a manufacturing agreement with 
Samsung Bioepis. Under the terms of 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 the 
terms of 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, 2015, 2014 and 2013, we recognized $62.9 million, $58.5 million and 
$43.1 million, respectively, in revenues in relation to these services, which is reflected as a component of other 
revenues in our consolidated statement of income. 

20. 

Litigation

We are currently involved in various claims and legal proceedings, including the matters described below. For 
information as to our accounting policies regarding contingencies, see Note 1, Summary of Significant Accounting 
Policies. 

Patent Matters 

Forward Pharma German Patent Litigation

On November 18, 2014 Forward Pharma A/S (Forward Pharma) filed suit against us in the Regional Court of 
Dusseldorf, Germany alleging that TECFIDERA infringes German Utility Model DE 20 2005 022 112 U1, which was 
issued in April 2014 and expired in October 2015. Forward Pharma subsequently extended its allegations to assert 
that TECFIDERA infringes Forward Pharma's European Patent No. 2,801,355, which was issued in May 2015 and 
expires in October 2025. Forward Pharma seeks declarations of infringement and damages for our sales of 
TECFIDERA in Germany. Under German law, disgorgement of profits on infringing sales is a measure of damages. A 
hearing has been scheduled for early 2016.  

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 multiple sclerosis with 480 mg of dimethyl fumarate as 
provided for in our TECFIDERA label. A hearing has been scheduled for early 2017.  

Inter Partes Review Proceeding

On September 28, 2015, the Coalition for Affordable Drugs V LLC, an entity associated with a hedge fund, filed 

a petition with the USPTO for inter partes review of the '514 patent, which we opposed. The USPTO has not yet 
decided whether to institute review. 

European Patent Office Oppositions

Several parties have filed oppositions in the European Patent Office requesting revocation of our European 
patent number 2 137 537 (the '537 patent), which includes claims covering the treatment of multiple sclerosis with 
480 mg of dimethyl fumarate as provided for in our TECFIDERA label. The '537 patent expires in 2028. A hearing 
has been scheduled for early 2016.

Patent Licensing Matter 

We are in discussions with Pfizer regarding its proposal that we take a license to its U.S. Patent No. 

8,603,777 (Expression of Factor VII and IX Activities in Mammalian Cells) and pay royalties on sales of ALPROLIX.  
An estimate of the possible loss or range of loss cannot be made at this time.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Patent Revocation Matter

In December 2015, Swiss Pharma International AG brought an action in the Patents Court of the United 

Kingdom to revoke the UK counterpart of our European Patent Number 1 485 127 (“Administration of agents to 
treat inflammation”) (the '127 patent), which was issued in June 2011 and concerns administration of natalizumab 
(TYSABRI) to treat multiple sclerosis. The patent expires in February 2023. On January 11, 2016 the same entity 
brought an action in the District Court of The Hague seeking to revoke the Dutch counterpart of the '127 patent. A 
hearing has been scheduled in the Dutch action for early 2017. No hearing has yet been scheduled in the UK 
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. (manufacturer, marketer and 
seller of REBIF), Pfizer Inc. (co-marketer of REBIF), and Novartis Pharmaceuticals Corp. (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. The court has consolidated 
the two lawsuits, and we refer to the two actions as the “Consolidated '755 Patent Actions.”

Bayer, Pfizer, Novartis and EMD Serono have all filed counterclaims in the Consolidated '755 Patent Actions 

seeking declaratory judgments of patent invalidity and non-infringement, and seeking monetary relief in the form of 
costs and attorneys' fees, and EMD Serono and Bayer have each filed a counterclaim seeking a declaratory 
judgment that the '755 Patent is unenforceable based on alleged inequitable conduct. Bayer has also amended its 
complaint to seek such a declaration. No trial date has been set.

Italian National Medicines Agency

In the fourth quarter of 2011, Biogen Italia SRL received notice from the Italian National Medicines Agency 
(Agenzia Italiana del Farmaco or AIFA) that sales of TYSABRI after mid-February 2009 exceeded a reimbursement 
limit established pursuant to a Price Determination Resolution (Price Resolution) granted by AIFA in December 
2006. On December 23, 2011, we filed an appeal in the Regional Administrative Tribunal of Lazio (Il Tribunale 
Amministrativo Regionale per il Lazio) in Rome, Italy seeking a ruling that the reimbursement limit in the Price 
Resolution should apply as written to only “the first 24 months” of TYSABRI sales, which ended in mid-February 
2009. The appeal is still pending. In June 2014, AIFA approved a resolution affirming that there is no 
reimbursement limit from and after February 2013. AIFA and Biogen Italia SRL are discussing a possible resolution 
for the period from February 2009 through January 2013.

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 in this matter. 

We also received a subpoena from the federal government for documents relating to our relationship with 

certain pharmacy benefit managers, with which we cooperated. We do not anticipate any further involvement.

Qui Tam Litigation

On July 6, 2015, four qui tam actions filed against us by relators suing on behalf of the United States and 

certain states were unsealed by the U.S. District Court for the District of Massachusetts. The actions, which have 
been administratively consolidated, allege sales and promotional activities in violation of the federal False Claims 
Act and state law counterparts, and seek single and treble damages, civil penalties, interest, attorneys’ fees and 
costs. The United States declined to intervene in two of the actions, both of which have since been voluntarily 
dismissed, and has not made an intervention decision in the other two actions, which we have moved to dismiss. 
An estimate of the possible loss or range of loss cannot be made at this time.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Securities Litigation

We and certain current and former officers are defendants in In re Biogen Inc. Securities Litigation, filed by a 

shareholder on August 18, 2015 in the U.S. District Court for the District of Massachusetts. The amended 
complaint alleges violations of federal securities laws under 15 U.S.C. §78j(b) and §78t(a) and 17 C.F.R. 
§240.10b-5. The lead plaintiff seeks a declaration of the action as a class action, certification as a representative 
of the class and its counsel as class counsel, 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.

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.

21.  Commitments and Contingencies

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 under these leases, net of amounts recognized in relation to 
exiting our Weston, Massachusetts facility, which terminate at various dates through 2028, amounted to $68.6 
million and $62.4 million in 2015 and 2014, respectively. Rent expense was $56.1 million in 2013. In addition to 
rent, the leases may require us to pay additional amounts for taxes, insurance, maintenance and other operating 
expenses.

As of December 31, 2015, 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 (1)
Less: income from subleases
Net minimum lease
payments

2016

2017

2018

2019

2020

Thereafter

Total

$

75.9 $
(6.0)

75.7 $
(6.0)

67.9 $
(6.3)

66.7 $
(6.3)

63.2 $ 382.7 $ 732.1
(59.8)
(28.9)
(6.3)

$

69.9 $

69.7 $

61.6 $

60.4 $

56.9 $ 353.8 $ 672.3

(1)  As a result of our decision to relocate our corporate headquarters to Cambridge, Massachusetts, we vacated part of our 

Weston, Massachusetts facility in the fourth quarter of 2013. We incurred a charge of $27.2 million in connection with this 
move. This charge represented our remaining lease obligation for the vacated portion of our Weston, Massachusetts facility, 
net of sublease income expected to be received. The term of our sublease to the vacated portion of our Weston, 
Massachusetts facility started in January 2014 and will continue through the remaining term of our lease agreement.

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, 2015 or 2014.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Eisai Financing Arrangement

During 2015 we amended our existing lease related to Eisai's oral solid dose products manufacturing facility in 

RTP, North Carolina where we manufacture our and Eisai's oral solid dose products. For additional information, 
please read Note 10, Property, Plant and Equipment to these consolidated financial statements. As of December 31, 
2015, the net present value of the future minimum lease payments were as follows:

(In millions)
2016
2017
2018
2019
2020
Thereafter

Total

Less: interest

Net present value of the future minimum lease payments

Tax Related Obligations

As of December 31, 2015
2.0
2.0
16.7
—
—
—
20.7
(0.9)
19.8

$

$

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, 2015, we have approximately $45.4 million of net liabilities associated with uncertain tax positions.

Other Funding Commitments

As of December 31, 2015, we have several on-going clinical studies in various clinical trial stages. Our most 

significant clinical trial expenditures are to contract research organizations (CROs). The contracts with CROs are 
generally cancellable, with notice, at our option. We have recorded accrued expenses of approximately $25.0 million 
on our consolidated balance sheet for expenditures incurred by CROs as of December 31, 2015. We have 
approximately $559.0 million in cancellable future commitments based on existing CRO contracts as of 
December 31, 2015.

Contingent Development, Regulatory and Commercial Milestone Payments

Based on our development plans as of December 31, 2015, we could make potential future milestone 

payments to third parties of up to approximately $2.8 billion 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 had not occurred as of December 31, 2015, 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. 

Manufacturing Commitments

On December 1, 2015, we purchased land in Solothurn, Switzerland where we plan to build a biologics 
manufacturing facility over the next several years. As of December 31, 2015, we had contractual commitments of 
$126.4 million for the construction of this facility.

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 terms of 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 in December 2013. Following that acquisition, we began making these royalty 
payments to Perrigo.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Contingent Consideration related to Business Combinations

In connection with our acquisitions of Convergence, Stromedix, Inc. (Stromedix), Biogen International 

Neuroscience GmbH (formerly Biogen Idec International Neuroscience GmbH) (BIN), Biogen Hemophilia Inc. (formerly 
Biogen Idec Hemophilia Inc.) (BIH) and Fumapharm AG, we agreed to make additional payments based upon the 
achievement of certain milestone events. 

As the acquisitions of Convergence, Stromedix and BIN, formerly Panima Pharmaceuticals AG, occurred after 

January 1, 2009, we record contingent consideration liabilities at their fair value on the acquisition date and revalue 
these obligations each reporting period. We may pay up to approximately $1.3 billion in remaining milestones related 
to these acquisitions. For additional information related to our acquisition of Convergence please read Note 2, 
Acquisitions, to these consolidated financial statements.

BIH

In connection with our acquisition of BIH, formerly Syntonix, in 2007, we agreed to pay up to an additional 
$80.0 million if certain milestone events associated with the development of BIH’s lead product, ALPROLIX are 
achieved. The first $40.0 million contingent payment was achieved in 2010. We paid an additional $20.0 million 
during the second quarter of 2014 as ALPROLIX was approved for the treatment of hemophilia B. A second $20.0 
million contingent payment will occur if, prior to the tenth anniversary of the closing date, a marketing authorization 
is granted by the EMA for ALPROLIX. This payment will be accounted for as an increase to intangible assets if 
achieved. 

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 twelve month period, as defined in the acquisition agreement. 

During 2015, we paid $850.0 million in contingent payments as we reached the $4.0 billion, $5.0 billion and 

$6.0 billion cumulative sales levels related to the Fumapharm Products in the fourth quarter of 2014, second 
quarter of 2015 and third quarter of 2015, respectively, and accrued $300.0 million upon reaching $7.0 billion in 
total cumulative sales of Fumapharm Products in the fourth quarter of 2015.

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. 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. 

22.    Guarantees

As of December 31, 2015 and 2014, 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, 2015 and 2014.

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Table of Contents

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

23.    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 $51.8 million, $49.3 million and $39.3 million for the years 

ended December 31, 2015, 2014 and 2013, respectively.

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, which 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, 2015 and 2014 totaled approximately $126.9 million and $105.2 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 in which 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 Swiss government and was 1.75% in 2015 and 
2014 and 1.5% in 2013, 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, 2015 and 2014, the the Swiss plan had an unfunded net pension obligation of approximately $42.4 
million and $31.9 million, respectively, and plan assets which totaled approximately $63.9 million and $43.9 million, 
respectively. In 2015, 2014 and 2013, we recognized expense totaling $12.9 million, $9.8 million and $10.9 million, 
respectively, related to our Swiss plan.

The obligations under the German plans are unfunded and totaled $27.6 million and $24.8 million as of 

December 31, 2015 and 2014, respectively. Net periodic pension cost related to the German plans totaled $4.0 
million, $3.5 million and $3.3 million for the years ended December 31, 2015, 2014 and 2013, respectively.

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Table of Contents

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

24.    Segment Information

We operate as one operating segment, which is discovering, developing, manufacturing and delivering therapies 

to patients for the treatment of neurodegenerative diseases, hematologic conditions and autoimmune disorders, 
and, therefore, our chief operating decision-maker manages the operations of our company as a single operating 
segment. 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.

Revenue by product is summarized as follows:

United
States

2015

Rest of
World

Total

United
States

2014

Rest of
World

Total

United
States

2013

Rest of
World

Total

For the Years Ended December 31,

$ 2,908.2 $

730.2 $ 3,638.4 $ 2,426.6 $

482.6 $ 2,909.2 $

864.4 $

11.7 $

876.1

2,630.2

1,956.7

1,056.4

3,013.1

1,902.4

1,103.1

3,005.5

1,790.2

227.1

1,103.1

—

308.3

208.9

840.0

111.4

783.0

89.7

11.4

25.6

338.5

27.8

1,886.1

1,025.1

89.7

—

319.7

234.5

58.4

72.1

16.7

934.4

80.2

—

3.9

44.5

1,959.5

80.2

58.4

76.0

—

51.4

51.4

—

62.5

62.5

—

814.2

—

—

—

—

—

712.3

74.0

—

1,526.5

74.0

—

—

—

—

60.2

60.2

$ 6,545.8 $ 2,642.7 $ 9,188.5 $ 5,566.7 $ 2,636.7 $ 8,203.4 $ 3,581.0 $ 1,961.3 $ 5,542.3

(In millions)

Multiple Sclerosis (MS):

TECFIDERA

AVONEX

PLEGRIDY

TYSABRI

FAMPYRA

Hemophilia:

ELOCTATE

ALPROLIX

Other product revenues:

FUMADERM

Total product
revenues

Geographic Information

The following tables contain certain financial information by geographic area:

December 31, 2015 (In millions)
Product revenues from external
customers

Unconsolidated joint business
revenues

Other revenues from external
customers

Long-lived assets

December 31, 2014 (In millions)
Product revenues from external
customers

Unconsolidated joint business
revenues

Other revenues from external
customers

Long-lived assets

December 31, 2013 (In millions)
Product revenues from external
customers

Unconsolidated joint business
revenues

Other revenues from external
customers

Long-lived assets

U.S.

Europe(1)

Germany

Asia

Other

Total

$ 6,545.8 $ 1,497.6 $

668.1 $

143.7 $

333.3 $ 9,188.5

$ 1,269.8 $

3.5 $

— $

— $

65.9 $ 1,339.2

$
142.0 $
$ 1,296.5 $

29.6 $
879.4 $

1.6 $
2.3 $

62.9 $
7.7 $

— $
236.1
1.7 $ 2,187.6

U.S.

Europe(1)

Germany

Asia

Other

Total

$ 5,566.7 $ 1,383.9 $

811.8 $

112.8 $

328.2 $ 8,203.4

$ 1,117.1 $

7.7 $

— $

— $

70.6 $ 1,195.4

$
212.6 $
$ 1,055.5 $

31.6 $
701.9 $

1.8 $
2.5 $

58.5 $
2.6 $

— $
304.5
3.2 $ 1,765.7

U.S.

Europe(1)

Germany

Asia

Other

Total

$ 3,581.0 $ 1,170.2 $

417.7 $

93.2 $

280.2 $ 5,542.3

$ 1,087.3 $

1.6 $

— $

3.2 $

33.9 $ 1,126.0

$
$

193.5 $
984.4 $

26.1 $
758.3 $

1.2 $
2.5 $

43.1 $
2.1 $

— $
263.9
3.3 $ 1,750.7

(1)  Represents amounts related to Europe less those attributable to Germany.

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Table of Contents

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Revenues from Unconsolidated Joint Business

Approximately 12%, 12% and 16% of our total revenues in 2015, 2014 and 2013, respectively, are derived from 

our joint business arrangement with Genentech. For additional information related to our collaboration with 
Genentech, please read Note 19, Collaborative and Other Relationships to these consolidated financial statements.

Significant Customers

We recorded revenue from two wholesalers accounting for 34% and 26% of gross product revenues in 2015, 

33% and 27% of gross product revenues in 2014, and 32% and 24% of gross product revenues in 2013, 
respectively.

Other

As of December 31, 2015, 2014 and 2013, approximately $684.9 million, $676.0 million and $731.1 million, 

respectively, of our long-lived assets were related to our manufacturing facilities in Denmark. 

25.    Quarterly Financial Data (Unaudited)

(In millions, except per share amounts)
2015
Product revenues, net
Unconsolidated joint business revenues
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

(a) (b)

2,172.3 $
330.6 $
52.0 $
2,555.0 $
2,242.6 $
820.2 $
822.5 $

337.5 $
55.6 $

2,198.6 $ 2,391.7 $
337.2 $
49.0 $
2,591.6 $ 2,777.9 $
2,305.5 $ 2,467.9 $
924.8 $ 1,019.5 $
965.6 $
927.3 $

Fourth
Quarter

Total
Year

(c) (d)
2,425.9 $
333.9 $
79.5 $

9,188.5
1,339.2
236.1
2,839.3 $ 10,763.8
9,523.4
2,507.5 $
3,593.2
828.7 $
3,547.0
831.6 $

3.50 $

3.94 $

4.16 $

3.77 $

15.38

3.49 $

3.93 $

4.15 $

3.77 $

15.34

235.0

235.6

235.3

232.2

235.7

232.6

220.4

220.8

230.7

231.2

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Table of Contents

BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

(In millions, except per share amounts)
2014
Product revenues, net
Unconsolidated joint business revenues
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

(e)
1,742.8 $
296.9 $
90.1 $
2,129.8 $
1,850.5 $
479.7 $
480.0 $

(f)

303.3 $
61.9 $

(f) (g)
2,056.3 $ 2,117.3 $
290.7 $
103.4 $
2,421.5 $ 2,511.4 $
2,129.6 $ 2,208.8 $
856.1 $
856.9 $

723.1 $
714.5 $

(f)
2,287.0 $
304.5 $
49.2 $
2,640.7 $
2,343.4 $
882.6 $
883.5 $

8,203.4
1,195.4
304.5
9,703.3
8,532.3
2,941.6
2,934.8

2.03 $

3.02 $

3.63 $

3.75 $

12.42

2.02 $

3.01 $

3.62 $

3.74 $

12.37

236.8

237.8

236.7

236.2

237.4

237.0

235.5

236.3

236.4

237.2

(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 third quarter of 2015, include a pre-tax charge to 
research and development expense of $48.1 million recorded upon entering into the collaboration agreement 
with AGTC.

(b)  Net income attributable to Biogen Inc., for the third quarter of 2015, reflects the attribution of a $60.0 million 
charge to noncontrolling interests, net of tax, related to a milestone payment due Neurimmune upon the 
enrollment of the first patient in a Phase 3 trial for aducanumab.

(c)  Net income and net income attributable to Biogen Inc., for the fourth quarter of 2015, include a pre-tax charge 

to research and development expense of $60.0 million recorded upon entering into the collaboration agreement 
with MTPC.

(d)  Net income and net income attributable to Biogen Inc., for the fourth quarter of 2015, include pre-tax 

restructuring charges totaling $93.4 million.

(e)  Net income and net income attributable to Biogen Inc., for the first quarter of 2014, include pre-tax charges to 
research and development expense of $117.7 million recorded upon entering into the collaboration agreement 
with Eisai.

(f)  Product revenues, net and total revenues for the second, third and fourth quarters of 2014 include net 

revenues related to ALPROLIX as commercial sales of ALPROLIX commenced in the second quarter of 2014.  
Product revenues, net and total revenues for the third and fourth quarters of 2014 include net revenues related 
to ELOCTATE and PLEGRIDY as commercial sales of ELOCTATE and PLEGRIDY commenced in the third quarter of 
2014.

(g)  Product revenues, net and total revenues for the second quarter of 2014 include the recognition of $53.5 

million of revenue previously deferred in Italy relating to the pricing agreement with AIFA. 

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Table of Contents

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of Biogen Inc.

In our opinion, the accompanying consolidated balance sheets and the related consolidated statements of income, 
comprehensive income, equity and cash flows present fairly, in all material respects, the financial position of Biogen 
Inc. and its subsidiaries at December 31, 2015 and December 31, 2014, and the results of their operations and 
their cash flows for each of the three years in the period ended December 31, 2015 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, 2015, based on criteria 
established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations 
of the Treadway Commission (COSO).  The Company's management is responsible for these financial statements, for 
maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal 
control over financial reporting, included in Management's Report on Internal Control over Financial Reporting under 
item 9A.  Our responsibility is to express opinions on these financial statements and on the Company's internal 
control over financial reporting based on our integrated audits.  We conducted our audits in accordance with the 
standards of the Public Company Accounting Oversight Board (United States).  Those standards require that we plan 
and perform the audits to obtain reasonable assurance about whether the financial statements are free of material 
misstatement and whether effective internal control over financial reporting was maintained in all material respects.  
Our audits of the financial statements included examining, on a test basis, evidence supporting the amounts and 
disclosures in the financial statements, assessing the accounting principles used and significant estimates made by 
management, and evaluating the overall financial statement presentation.  Our audit of internal control over financial 
reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a 
material weakness exists, and testing and evaluating the design and operating effectiveness of internal control 
based on the assessed risk.  Our audits also included performing such other procedures as we considered 
necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

As discussed in Note 16 to the consolidated financial statements, the Company changed the manner in which it 
classifies deferred taxes in 2015 and 2014 due to the adoption of Accounting Standards Update 2015-17, Balance 
Sheet Classification of Deferred Taxes.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance 
regarding the reliability of financial reporting and the preparation of financial statements for external purposes in 
accordance with generally accepted accounting principles.  A company’s internal control over financial reporting 
includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, 
accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable 
assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance 
with generally accepted accounting principles, and that receipts and expenditures of the company are being made 
only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable 
assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s 
assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements.  
Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may 
become inadequate because of changes in conditions, or that the degree of compliance with the policies or 
procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP
Boston, Massachusetts
February 3, 2016 

F- 71

Table of Contents

Exhibit No.
2.1†

3.1

3.2

3.3

4.1

4.2

4.3

4.4

4.5

10.1

10.2†

10.3

10.4†

10.5†

10.6*

10.7*

10.8*

10.9*

10.10*

10.11*

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.

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.

Third Amended and Restated Bylaws. Filed as Exhibit 3.2 to our Current Report on Form 
8-K filed on March 27, 2015.

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 Idec and The Bank of New York Trust Company, N.A. dated as 
of February 26, 2008. Filed as Exhibit 4.1 to our Registration Statement on Form S-3 (File 
No. 333-149379).

First  Supplemental  Indenture  between  Biogen  Idec  and  The  Bank  of  New  York  Trust 
Company, N.A. dated as of March 4, 2008. Filed as Exhibit 4.1 to our Current Report on 
Form 8-K filed on March 4, 2008.

Indenture,  dated  September  15,  2015,  between  Biogen  Inc.  and  U.S.  Bank  National 
Association. Filed as Exhibit 4.1 to our Current Report on Form 8-K filed on September 
16, 2015.

First Supplemental Indenture, dated September 15, 2015, between Biogen Inc. and U.S. 
Bank National Association. Filed as Exhibit 4.2 to our Current Report on Form 8-K filed on 
September 16, 2015.
Credit Agreement, dated August 28, 2015, between Biogen Inc., Bank of America, N.A., 
as administrative agent, swing line lender and an L/C issuer, and the other lenders party 
thereto. Filed as Exhibit 10.1 to our Current Report on Form 8-K filed on September 1, 
2015.

Expression Technology Agreement between Biogen Idec and Genentech. Inc. dated March 
16, 1995. Filed as an exhibit to Biogen Idec’s Quarterly Report on Form 10-Q for the quarter 
ended March 31, 1995.

Letter Agreement between Biogen Idec and Genentech, Inc. dated May 21, 1996. Filed as 
Exhibit 10.1 to our Current Report on Form 8-K filed on June 6, 1996.

Second  Amended  and  Restated  Collaboration  Agreement  between  Biogen  Idec  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 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.
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.

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.

A- 1

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Table of Contents

Exhibit No.
10.12*

10.13*

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*

Description
Form of performance shares award agreement under the Biogen Idec Inc. 2008 Omnibus 
Equity Plan.  Filed as Exhibit 10.12 to our Annual Report on Form 10-K for the year ended 
December 31, 2013.
Form of market stock 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, 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 Idec Inc. 2005 Omnibus Equity Plan. Filed as Appendix A to our Definitive Proxy 
Statement on Schedule 14A filed on April 15, 2005.
Amendment No. 1 to the Biogen Idec Inc. 2005 Omnibus Equity Plan dated April 4, 2006. 
Filed as Exhibit 10.1 to our Quarterly Report on Form 10-Q for the quarter ended March 
31, 2007.
Amendment No. 2 to the Biogen Idec Inc. 2005 Omnibus Equity Plan dated February 12, 
2007. Filed as Exhibit 10.2 to our Quarterly Report on Form 10-Q for the quarter ended 
March 31, 2007.

Amendment to the Biogen Idec Inc. 2005 Omnibus Equity Plan dated April 18, 2008. Filed 
as Exhibit 10.7 to our Quarterly Report on Form 10-Q for the quarter ended June 30, 2008.
Amendment to Biogen Idec Inc. 2005 Omnibus Equity Plan dated October 13, 2008. Filed 
as Exhibit 10.30 to our Annual Report on Form 10-K for the year ended December 31, 
2008.
Biogen Inc. 2015 Employee Stock Purchase Plan. Filed as Appendix A to Biogen's 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 Biogen Idec’s Definitive Proxy Statement on Schedule 14A filed on May 8, 2008.

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.
Supplemental Savings Plan, as amended.
Voluntary Board of Directors Savings Plan, as amended.

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 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. Filed as Exhibit 10.1 to our Quarterly 
Report on Form 10-Q for the quarter ended September 30, 2014.

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  Idec  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 Douglas E. Williams dated December 7, 2010. 
Filed as Exhibit 10.57 to our Annual Report on Form 10-K for the year ended December 
31, 2011.

A- 2

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Table of Contents

Exhibit No.
10.34*

10.35*

10.36*

10.37*+
10.38*

10.39*

10.40*

10.41*+
10.42*+
21+
23+

31.1+

31.2+

32.1++

101++

Description
Letter  regarding  employment  arrangement  of  Steven  H.  Holtzman  dated  November  19, 
2010. Filed as Exhibit 10.58 to our Annual Report on Form 10-K for the year ended December 
31, 2011.
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.

Letter regarding employment arrangement of Alfred Sandrock dated May 7, 2013. Filed as 
Exhibit 10.1 to our Quarterly Report on Form 10-Q for the quarter ended June 30, 2013.
Letter regarding employment arrangement of Alfred Sandrock dated October 19, 2015. 

Letter regarding employment arrangement of Adam Koppel dated January 10, 2014. Filed 
as Exhibit 10.43 to our Annual Report on Form 10-K for the year ended December 31, 2014.
Letter regarding employment arrangement of Susan Alexander dated December 13, 2005. 
Filed as Exhibit 10.58 to our Annual Report on Form 10-K for the year ended December 31, 
2009.
Letter regarding employment arrangement of Adriana Karaboutis dated August 7, 2014. 
Filed as Exhibit 10.44 to our Annual Report on Form 10-K for the year ended December 31, 
2014.
Letter regarding employment arrangement of John Cox dated September 7, 2010.  
Letter regarding separation arrangement of Tony Kingsley dated November 12, 2015.
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, 2015, 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. (formerly Biogen Idec 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.

A- 3

  
  
  
  
  
  
  
  
C O R P O R AT E   I N F O R M AT I O N

B O A R D   O F   D I R E C T O R S

Stelios Papadopoulos, Ph.D.
Chairman, Biogen
Chairman, Exelixis, Inc. and 
Regulus Therapeutics, Inc.

George A. Scangos, Ph.D.
Chief Executive Offi cer, Biogen

Alexander J. Denner, Ph.D.
Sarissa Capital, Founding Partner

Caroline D. Dorsa
Retired Executive Vice President and
Chief Financial Offi cer, Public Service
Enterprise Group, Inc.

Nancy L. Leaming
Retired Chief Executive Offi cer and President, 
Tufts Health Plan

Richard C. Mulligan, Ph.D.
Sarissa Capital, Founding Partner, and 
Mallinckrodt Professor of Genetics, Emeritus, 
Harvard Medical School

Robert W. Pangia
Chief Executive Offi cer,
Ivy Sports Medicine, LLC

Brian S. Posner
President, Point Rider Group LLC 
Private Investor

Eric K. Rowinsky, M.D.
Former Head of R&D and Chief Medical Offi cer,
Stemline Therapeutics, Inc. and 
life sciences consultant

The Honorable Lynn Schenk
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

S H A R E H O L D E R   I N F O R M AT I O N

C O M M O N   S T O C K   P R I C E

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

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

INDEPENDENT ACCOUNTANTS
PricewaterhouseCoopers LLP
101 Seaport Boulevard
Boston, MA 02210

NEWS RELEASES
As a service to our shareholders
and prospective investors, copies 
of Biogen news releases issued 
in the last 12 months are now 
available almost immediately 
24 hours a day, seven days a 
week, on the Web at businesswire.
com. Biogen’s news releases are 
usually posted within one hour of 
being issued and are available at 
no cost at biogen.com.

MARKET 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, 2015 and 2014.

2
0
1
5

2
0
1
4

Q1

Q2

Q3

Q4

Q1

Q2

Q3

Q4

HIGH

L OW

$480.18

$334.40

$432.88

$368.88

$412.24

$265.00

$311.65

$254.00

$358.89

$270.62

$322.25

$272.02

$349.00

$298.31

$361.93

$290.85

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T

B

I

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N

B

I

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G
E
N

2
0
1
5

A
N
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A
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P
O
R
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Building the Next Biogen.

2 0 1 5   A N N U A L   R E P O R T

225 Binney Street
Cambridge, MA 02142

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