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Biogen

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FY2019 Annual Report · Biogen
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ANNUAL
REPORT

2019  

 
 
 
 
PERFORMANCE HIGHLIGHTS

Total Revenues  
($ in millions)

Product Revenues 
($ in millions and % of total product revenues)

$14,378

2019

2018

2019

2018

2017

2016

2015

$13,453

$12,274

$11,449

$10,764

SPINRAZA
$2,097  $1,724
18.4%  15.8%

TYSABRI
$1,892  $1,864
16.6%  17.1%

Other 4
$851  $662
6.1%
7.5% 

TECFIDERA
$4,433  $4,274
38.95%    39.3%

VUMERITY5
$6          –
0.05%           –

Interferon6
$2,102  $2,363
18.5%    21.7%

GAAP Diluted EPS/Non-GAAP Diluted EPS 1

2019

2018

2017

2016

2015

$31.42

$33.57

$21.582

$26.20

$11.922

$21.81

Product Revenues by Region (% of total product revenues) 

$16.93

$20.22

  U.S. 

  Rest of the world

$15.34

$17.01

2019

2018

2017

Free Cash Flow 1,3  
($ in millions) 

41%

37%

32%

59%

63%

68%

$6,264

$3,917

2019

2018

2017

2016

2015

$2,484

$2,706

$2,223

1   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 9–13 of this Annual Report.
2   GAAP diluted EPS for 2018 and 2017 includes charges of $125 million and  

$1,176 million, respectively, related to the impact of the Tax Cuts and Jobs Act of 2017.

3   Free Cash Flow for 2016 through 2019 reflects an increase in capital expenditures 
related to the construction of our large-scale biologics manufacturing facility in 
Solothurn, Switzerland.

4   For 2019 and 2018 Other includes product revenues from FAMPYRA, FUMADERM, 

BENEPALI, FLIXABI and IMRALDI. For 2018 Other also includes product revenues from 
ZINBRYTA, which was voluntary withdrawn from the market in March 2018. 

5   VUMERITY was approved by the U.S. Food and Drug Administration in  
October 2019 and became available in the U.S. in November 2019.

6  Interferon includes AVONEX and PLEGRIDY.

+4.5%

increase in total 
product revenues 
year over year

100%

total renewal 
electricity purchased 
by Biogen

46%

of manager-level  
and above positions 
held by women

Concept, design and realization 
PETRANIX Corporate and Financial Communications AG
Adliswil, Zurich – Switzerland
www.petranix.com

Printing
Donnelley Financial Solutions, dfinsolutions.com

Biogen  2019 Annual  Report  1

CEO LETTER

My fellow stockholders,
2019 was a remarkable year for Biogen as we  
delivered strong operating performance across  
all of our core business areas, double-digit  
earnings growth versus a year ago and strong  
execution of our strategy. We strengthened our 
pipeline by adding seven new clinical programs, 
which we believe will help us further expand  
our multi-franchise portfolio and drive mid- and 
long-term growth. 

2019 was also marked by changing developments 
for aducanumab, an investigational treatment  
for early Alzheimer’s disease. In October 2019, 
together with our collaboration partner Eisai Co., 
Ltd. (Eisai), we announced plans to pursue regulato-
ry approval for aducanumab in the U.S. This decision 
was based on a new analysis, conducted in consul-
tation with the U.S. Food and Drug Administration 
(FDA), of a larger dataset from the Phase 3 EMERGE 
and ENGAGE studies of aducanumab that had  
been discontinued in March 2019 following a 
pre-specified futility analysis. 

The extraordinary events surrounding aducanumab 
and the progress across our portfolio is a testa - 
ment to Biogen’s commitment to follow the science 
– one that was made possible by fearless, dedicat-
ed colleagues. 

Before turning to 2019 in more detail, we want to 
acknowledge the health and economic challenges 
facing all of us as a result of the current COVID-19 
pandemic. Many of our communities as well as 
a number of our colleagues have been directly 
affected by COVID-19. We are committed to doing 
all we can to ensure the health and safety of all our 
employees and to provide an uninterrupted supply 
of our medicines to patients around the world. We 
are grateful to everyone at Biogen who has helped 
us maintain our manufacturing and business 
operations so that patients can continue to receive 
our therapies. We are closely monitoring the ongoing 
and ever-changing developments and the impact it 
may have on our business operations, including our 
sales, manufacturing and clinical trials. 

"We work with purpose to advance 
science to address the urgent and  
long-term challenges facing humanity."
Michel Vounatsos, Chief Executive Officer

Our purpose
At Biogen we pioneer science with the goal of 
better understanding and preserving the underlying 
qualities of our essential human nature. We strongly 
believe that neuroscience is the next frontier that 
will see real scientific progress and breakthrough, 
and we believe that our diverse, talented workforce, 
with more than 7,700 employees worldwide, is 
uniquely positioned to take on some of the most 
challenging healthcare needs and to move Biogen 
forward. As we work to improve patients’ lives, we 
also care deeply about making a difference in our 
society as a whole through science that may have 
the potential to, among other things, improve brain 
health, mobility and vision. We focus on science that 
seeks to solve societal problems and create access 
to innovation. We work with purpose to advance 
science to address the urgent and long-term 
challenges facing humanity.

2  Biogen  2019 Annual  Report 

CEO LETTER

Delivering sustainable performance 
In 2019 we generated $14.4 billion in full-year total 
revenues, a 7% increase versus the prior year, and 
we generated net cash flows from operations of 
approximately $7.1 billion. GAAP diluted earnings 
per share for 2019 were $31.42, an increase of 
46% over 2018, and Non-GAAP diluted earnings per 
share increased 28% over the prior year to $33.57. 

Our business and cash generation remained strong 
and provided us with the flexibility to allocate capital 
to create long-term stockholder value. In 2019 
we spent approximately $2.3 billion in research 
and development and repurchased approximately 
24 million shares of our common stock for a total 
value of approximately $5.9 billion. In addition, we 
spent approximately $515 million in 2019 on 

2019  
total revenues

+7% 

capital expenditures, including a significant 
investment in the large scale biologics 
manufacturing facility we are building in 
Solothurn, Switzerland.

These results reflect the resilience of our  
multiple sclerosis (MS) business as 
well as the continued growth of both 
SPINRAZA and our biosimilars business. 

Capturing the neuroscience opportunity 
To review Biogen’s strong 2019 performance –  
as well as Biogen’s future – let’s consider some  
key statistics. 

for example, the advancements that followed the 
discoveries of anesthesia, medical imaging, penicil-
lin, organ transplants, HIV treatment and immuno-
therapy. For Biogen, we believe our expertise and 
capabilities could lead to the next major inflection 
point in neuroscience. 

Our view is that neurological diseases are deeply con-
nected. As the pathways of disease are interrelated, 
so are the potential approaches to treating them. Our 
experience in MS gives our scientists and researchers 
deeper insights into remyelination and repair, neuro-
protection and axonal health, with potential appli-
cations in Alzheimer’s disease, Parkinson disease, 
amyotrophic lateral sclerosis (ALS) and stroke.  

Leading in Alzheimer’s disease 
The announcement in October 2019 of our plan to 
pursue regulatory filing for aducanumab in the U.S. 
was one of the highlights of our year. 

In March 2019 we announced the discontinuation 
of EMERGE and ENGAGE, our two Phase 3 studies, 
based on the results of a pre-specified futility anal-
ysis that predicted that both studies were unlikely 
to meet their primary endpoint upon completion. In 
retrospect, we now know that the result of the futility 
analysis, based on a smaller and earlier dataset, 
was incorrect. Following the discontinuation of the 
studies, additional data from a greater number of 
patients became available.

It is estimated that approximately 50 million people 
worldwide suffer from dementia and approximately 
10 million suffer from Parkinson’s disease. 
Neurological disease is the leading cause of disability 
and the second largest cause of death globally. 1,2

Aging populations will almost certainly increase these 
numbers significantly. It is estimated that the global 
population over the age of 60 will be nearly 1.5 billion 
by 2030, and by 2050 those over 60 will be nearly 
2 billion, with 1.5 billion over the age of 65. 3,4 

These numbers are only part of the story. There  
are important inflection points in medical history 
when a breakthrough in knowledge or technology 
generates new ideas and treatments. Consider, 

A new analysis of this larger dataset, conducted in 
consultation with the FDA, showed that the Phase 
3 EMERGE study met its pre-specified primary and 
secondary endpoints by showing a significant reduc-
tion in clinical decline. And, we believe that results 
from a subset of patients in the Phase 3 ENGAGE 
study who received sufficient exposure to high dose 
aducanumab support the findings from EMERGE, 
though ENGAGE did not meet its primary endpoint. 

Over the past months, we have been actively 
engaging with the FDA and are working diligently to 
complete the regulatory filing in the U.S. as soon 
as possible. We are also actively engaging with 
regulators in Europe and in Japan based on the 
positive results of the new findings.

Biogen  2019 Annual  Report  3

BIOGEN FORWARD
Our approach to deliver sustainable value

Strong core business and  
investing for future growth

EXECUTING 
ON THE CORE 
BUSINESS

CREATING  
NEW SOURCE 
OF VALUE

Maximizing the resilience  
of our MS core business

Leading in  
Alzheimer's disease

Accelerating  
our neuromuscular franchise

Developing and expanding our neuroscience  
portfolio and pursuing therapeutic adjacencies

Unlocking the  
potential of biosimilars

Continuous improvement and  
diligent capital allocation

One of our first priorities was to offer eligible 
patients who had been enrolled in the discontinued 
aducanumab studies the possibility of restarting the 
investigational treatment. The first patient in the U.S. 
returned to dosing in March 2020, and we are also 
actively working in Europe and Japan to re-open sites. 

If approved, aducanumab would become the first 
therapy to reduce clinical decline in patients at early 
stages of the disease. While this brings tremendous 
hope, there remain significant challenges as 
patients are usually diagnosed late in the progres-
sion of the disease. Consequently, we have started 
working collaboratively with healthcare stakeholders 
to help support efforts that could enable the system 
to diagnose patients early enough so they might 
benefit from potential treatment. 

The path for innovation is not straightforward – 
especially for Alzheimer’s disease research – and 
aducanumab’s journey has been humbling, fueled  
by both a drive to address the unmet need and 
hope. All along, we have worked with determination 
to follow the science with patients in mind. 

We also believe it will take more than one therapy 
to treat Alzheimer’s disease, so we continue to 
advance a broad portfolio of potential Alzheimer’s 
therapies. In March 2019 our collaboration partner 
Eisai announced the start of CLARITY AD, a Phase 3 
study of BAN2401, an anti-amyloid beta antibody 
co-developed with Biogen to potentially treat 
patients with early Alzheimer’s disease. In addition, 
our portfolio includes BIIB080, a tau-targeted 
anti sense oligonucleotide (ASO) in Phase 1; BIIB076, 
an anti-tau antibody in Phase 1; and gosuranemab 
(BIIB092), a distinct anti-tau antibody in Phase 2, as 
well as a number of pre-clinical programs.

In addition to our Alzheimer’s disease pipeline 
and pre-clinical programs, we have entered into a 
number of transactions with potential applications 
in Alzheimer’s disease:

 – In December 2019 we entered into a collaboration 

with Camp4 Therapeutics, whose platform  
may bring additional capability in the identification 
of potential druggable targets for Alzheimer’s 
disease, among others. 

4  Biogen  2019 Annual  Report 

CEO LETTER

GROWING OUR MULTI-FRANCHISE PORTFOLIO

NEUROCOGNITIVE 
DISORDERS

PAIN

MOVEMENT DISORDERS

Near-term 
value creation 
opportunities

OPHTHALMOLOGY

OPHTHALMOLOGY

LUPUS

STROKE

IMMUNOLOGY/OTHER

ACUTE NEUROLOGY

ALZHEIMER’S DISEASE

ALZHEIMER’S DISEASE

SMA

NEUROMUSCULAR  
(SMA + ALS)

NEUROMUSCULAR  
(SMA + ALS)

MULTIPLE SCLEROSIS

MULTIPLE SCLEROSIS

MULTIPLE SCLEROSIS

MULTIPLE SCLEROSIS

YESTERDAY

TODAY

EARLY 2020s

OUR VISION

BIOSIMILARS

BIOSIMILARS

BIOSIMILARS

 – In January 2020 we entered into an agreement 
with Pfizer Inc., which was completed in March, 
and acquired a Phase 1 asset for the potential 
treatment of patients with behavioral and neuro-
logical symptoms across various psychiatric and 
neurological diseases, including the treatment of 
sundowning in Alzheimer’s disease. 

 – In February 2020 we announced a global collab-
oration with Sangamo Therapeutics, Inc., which 
became effective in April 2020, to develop gene 
regulation therapies for Alzheimer’s, Parkinson’s, 
neuromuscular and other neurological diseases.

Resilience in MS
In 2019 we remained a global market leader in MS 
with an approximately 34% market share of the 
approximately one million MS patients being treated 
worldwide. Our portfolio ranges from symptomatic 
treatment to disease-modifying therapies and, with 
25 active MS clinical trials, we continue pioneering 
research across all stages of MS. 

In October 2019, together with Alkermes plc, we 
announced FDA approval for VUMERITY, a novel 
fumarate treatment for relapsing MS. We are excited 
about the prospect of this new option for patients. 
VUMERITY offers the well-characterized efficacy 
of TECFIDERA, the most prescribed oral medicine 
for relapsing MS in the U.S., and showed superior 
patient-reported gastrointestinal tolerability.

We continued to advance the Phase 2b study  
of opicinumab (anti-LINGO) as a potential remyelin-
ating agent for MS. If successful, opicinumab  
would represent a first-in-class therapy to potentially 
repair or restore function in MS patients, an  
entirely different approach from current disease- 
modifying therapies. 

We recently had two label updates in the European 
Union to allow, where clinically needed, the use 
of AVONEX and PLEGRIDY during pregnancy and 
breastfeeding, and we have several portfolio 
innovations in progress, such as the evaluation of 

Biogen  2019 Annual  Report  5

extended interval dosing with TYSABRI, that we 
believe are primed to strengthen the business from 
multiple facets. Looking ahead, our unwavering 
commitment in MS continues. 

Continued growth and regional  
expansion in spinal muscular atrophy
SPINRAZA, the first treatment approved for infants, 
children and adults with spinal muscle atrophy 
(SMA), continued to grow in the U.S. and even more 
so outside the U.S. In 2019 full-year SPINRAZA 
revenues increased 22% from 2018 to $2.1 billion, 
driven by 9% growth in the U.S. to $933 million and 
34% growth outside the U.S. to $1.2 billion. 

By the end of 2019 SPINRAZA was approved in  
over 50 countries with formal reimbursement  
in 40 countries, including China. More than  
10,000 patients have been treated with SPINRAZA 
globally, including in clinical studies, the Expanded 
Access Program and the post-marketing setting. 

Despite progress, a cure has yet to be found for this 
devastating disease, and our commitment to the 
SMA community remains unwavering. The results 
of the NURTURE study in pre-symptomatic infants, 
presented at the annual Cure SMA meeting in June 
2019, showed that treating patients earlier improved 
outcomes. We are pleased that newborn screening 
for SMA has increasingly become routine and imple-
mented in 23 states in the U.S. to date. In September 
2019 we announced that we plan to initiate DEVOTE, 
a new Phase 2/3 study evaluating the safety and 
potential for even greater efficacy of a higher dose of 
SPINRAZA in the treatment of SMA. The first patient 
in the study was dosed in March 2020.

SPINRAZA’s success is an example of Biogen’s 
pioneering science and strong execution capabili-
ties. In less than four years, SPINRAZA has become 
a foundation of care for SMA, providing life-changing 
benefits to many patients and turning what was an 
often-fatal disease for infants with the most severe 
form of SMA into a potentially survivable condition. 

Double-digit growth in biosimilars
A core part of our strategy is to unlock the potential 
of biosimilars as a growth driver and as part of 

our value proposition to support a sustainable 
healthcare system. Biosimilars are products that 
have been demonstrated to be similar in efficacy 
and safety to the originator’s approved biological 
product, with the advantage that they offer cost 
savings, providing payers and health systems the 
budgetary headroom to fund innovation. 

In 2019 our biosimilars business grew 35%, 
generating $738 million in revenues. More than 
200,000 patients were treated with our three 
anti-tumor necrosis factor (anti-TNF) biosimilars,  
an increase of approximately 70% versus the 
prior year. Overall, we estimate that our anti-TNF 
biosimilars have contributed healthcare savings of 
approximately €1.8 billion in Europe in 2019. 

In December 2019 we bolstered our biosimilar  
business by securing the exclusive rights to  
commercialize two potential ophthalmology bio-
similar products, SB11 referencing LUCENTIS and  
SB15 referencing EYLEA, in major markets world-
wide, including the U.S., Canada, Europe, Japan  
and Australia.

Advancing significant opportunities  
for value creation 
The progress of our pipeline reflects our goal to 
bring innovative new therapies to patients and 
further supports our strategy of building a multi- 
franchise neuroscience portfolio. 

"The progress of our pipeline reflects our 
goal to bring innovative new therapies 
to patients and further supports our 
strategy of building a multi-franchise 
neuroscience portfolio."

We are pioneers in neuroscience and are not afraid 
to go where others won’t. Our focus enables us to 
leverage the interconnectivity in neuroscience and 
to develop unique asymmetric core capabilities that 
we believe may increase the probability of success 
of our pipeline.

6  Biogen  2019 Annual  Report 

CEO LETTER

We closed 2019 with a pipeline that included 
27 clinical programs, of which 6 are in Phase 3, 
12 are in Phase 2 and 9 are in Phase 1 – as well 
as a deep pre-clinical pipeline across multiple 
modalities. We believe that no other company is as 
well-positioned to develop breakthrough medicines 
for patients living with devastating neurological and 
neurodegenerative diseases. Looking forward, we 
expect multiple mid- to late-stage readouts by the 
end of 2021.

We have an unwavering commitment to neuromus-
cular disorders, and we are inspired by the progress 
of tofersen (BIIB067), an ASO being studied for the 
potential treatment of a rare form of ALS in adults 
with a confirmed superoxide dismutase 1 (SOD1) 

mutation. At the 71st annual meeting of the 

American Academy of Neurology in May 

>10,000

patients treated with 
SPINRAZA globally 6

2019 we presented positive results of 
a Phase 1/2 study of tofersen, and we 
have started enrollment of VALOR, a 
pivotal Phase 3 study. We believe the 
Phase 1/2 data further demonstrate 
the potential of targeting genetic 
drivers of disease. 

In December 2019 we announced positive 

top-line results from the Phase 2 LILAC study 
evaluating the efficacy and safety of BIIB059 (anti- 
BDCA2) in patients with lupus. The study results 
showed that BIIB059, a monoclonal antibody, 
demonstrated a statistically significant reduction 
of disease activity in people with cutaneous lupus 
and systemic lupus erythematosus, as compared 
to those who received placebo. There are currently 
only a limited number of treatment options available 
to help manage these difficult-to-treat and chronic 
diseases, and we are excited by the prospect to 
advance BIIB059 to Phase 3.

We continued to further our pipeline in ophthal-
mology. In March 2019 we acquired Nightstar 
Therapeutics plc, a clinical-stage gene therapy  
company. As a result, we added two mid- to 
late-stage clinical assets, as well as preclinical 
programs, that focus on adeno-associated virus 
treatments for inherited retinal disorders that can 

lead to blindness. Following the acquisition, we 
completed enrollment of the Phase 3 STAR study  
of BIIB111 (timrepigene emparvovec) for the  
potential treatment of choroideremia, a rare, 
degenerative, X-linked retinal disorder that leads 
to blindness and currently has no approved treat-
ments. The study is designed to investigate the 
safety and efficacy of a single subretinal injection  
of the gene therapy.

While we hope to continue the clinical trials that we 
have underway, we expect that COVID-19 precau-
tions may impact the timeline of some of our trials.

Where science meets humanity 
We feel a great sense of responsibility in our role as 
a corporate citizen to make a positive impact both 
today and in the future. To do this, we must always 
consider and act on environmental, social and 
governance (ESG) issues as an integral part of how 
we do our business – every day.

In 2019, for the fourth time, Biogen was listed as the 
number one company for the biotechnology industry 
in the Dow Jones Sustainability World Indices. 

Since 2014 Biogen has been carbon neutral, as 
reflected in our use of 100% renewable electricity 
and financially supported carbon offset projects. It 
is clear that more is needed, and we are working to 
find solutions that align with the recommendations 
of climate scientists to move beyond carbon offsets. 
Also, we treat water as a precious commodity – 
strictly monitoring and looking for ways to reduce 
use. We continue to actively employ green chemistry 
processes and techniques to reduce our waste, 
water and energy consumption.

Our employees are actively involved in our  
corporate responsibility efforts. In September  
2019 more than 3,000 Biogen employees across 
more than 30 countries volunteered their time  
and energy for our annual Care Deeply Day. Since 
2010 this global day of service has supported  
more than 100 community-based organizations, 
science education programs, nutrition and food 
security and other local needs. 

Biogen  2019 Annual  Report  7

In 2019 we took two major steps in providing 
greater transparency on how critical decisions are 
made about access to our medicines. In June we 
published our updated Pricing Principles that outline 
how we determine responsible pricing for our thera-
pies, and in December we published our framework 
of Access Programs for investigational therapies. 
Our thinking on these very important matters has 
been guided by health equity and affordability while 
sustaining innovation.

The Biogen Foundation supports our commitment 
to science, technology, engineering and math 
education (STEM). In 2019 more than 4,220 stu-
dents participated in education sessions at our 
Community Labs in our Cambridge, Massachusetts, 
and Research Triangle Park, North Carolina, 
locations. Since our Community Labs began, nearly 
55,000 children have been engaged in our hands-
on programs, and in 2019 54% of those students 
came from low-income households and/or groups 
traditionally underrepresented in science.

Our multi-front response to the COVID-19 pandemic
Biogen is engaging on many fronts to respond to  
the COVID-19 global crisis by focusing our efforts on 
the following major areas. 

Through the Biogen Foundation, we have committed 
$10 million to support the global response efforts 
and the immediate needs of communities. Our 
donations are focused on expanding testing options, 
easing the strain on medical systems and support-
ing access to necessities like food.

We have directed employees to work from home  
and provided support, including financial support,  
to all Biogen employees and their families worldwide 
to protect their health and safety and prevent the 
disease from further spreading. 

We have deployed our scientific resources and 
capabilities, which include equipment and supplies, 
to help support organizations as they work on the 
front lines to treat and contain the virus. 

Biogen’s ongoing success is rooted in the  
strength of our diverse people and our inclusive 
culture. We firmly believe that diverse teams drive 
better performance. Within Biogen today, we are 
proud of the fact that 46% of our director-level  
and above positions are held by women, and that 26% 
of director-level and above roles in the U.S. are held 
by racial or ethnic minorities. Recently, we have taken 
important steps in setting goals to ensure diversity in 
our clinical trial programs. This is part of our commit-
ment to address the needs of the patients we serve. 
In the U.S. alone, we know that African Americans 
make up only 5% of clinical trial participants, while 
Hispanic representation is 1%. 5 This is not sufficient 
representation, a fact we are working to help change. 

In 2020 we will continue to advance our corporate 
responsibility leadership. Ultimately, we believe  
that by doing the right thing for our community and 
the world, we can help build sustainable value for  
all our stakeholders. 

We are helping to increase the understanding 
of COVID-19 and advance research efforts and 
potential therapeutic options. For example, we  
have entered into a consortium with the Broad 
Institute of MIT and Harvard, and Partners 
HealthCare to create a COVID-19 biobank.  
We will enable impacted Biogen employees, as well 
as close contacts, to donate blood samples and 
related health data, which will then be analyzed  
by scientists and researchers and will be openly 
shared with the global scientific community.

Our teams are mobilized as we work to ensure 
patients continue to have access to our therapies and 
are closely monitoring developments and potential 
impacts on our business. As we’ve moved forward 
through this crisis, the importance of our work and the 
vital role our team plays in supplying critical therapies 
for people living with serious neurological and neuro-
degenerative diseases has become even clearer.

8  Biogen  2019 Annual  Report 

CEO LETTER

Looking to the future 
Given the fluidity of the current environment, we  
anticipate that there may be near-term impacts  
on our business or operations from the COVID-19  
pandemic. However, we believe that we have 
multiple opportunities for long-term value creation  
as we continue to build a multi-franchise neuro-
science portfolio. 

As always, we will remain financially disciplined, 
continue to drive efficiencies and operate with 
integrity as we aim to continue to deliver long-term 
value to our stockholders and society. We believe 
that neuroscience is at an inflection point, and 
Biogen is at the forefront. We are hopeful about 
the prospect of creating new sources of value for 
our stockholders and continuing to deliver on our 
purpose to lead in this space as we work to develop 
new therapies for the betterment of humanity. 

None of our accomplishments or our prospects  
for future success would be possible without  
the commitment of the people of Biogen, the  
trust of our stockholders and the support all of  
our stakeholders – scientists, collaboration 
partners, healthcare providers, advocacy groups, 
caregivers and patients. 

My sincere thanks and appreciation to all of you. 
Together, we are tackling some of the most difficult 
and devastating diseases, and we believe we can 
have a profound, positive impact on society. We  
are dedicated to working ethically and compliantly 
with a passion for science to help deliver innovative  
therapies for patients and value for our stockholders.  
At Biogen, we are pioneering science for humanity. 
Millions are waiting for life-changing therapies, 
which is why we can’t wait. The time is now. 

Michel Vounatsos
Chief Executive Officer

1  https://www.alz.co.uk/research/WorldAlzheimerReport2018.pdf?2 (2018)
2  https://www.parkinson.org/Understanding-Parkinsons/Statistics
3   https://www.forbes.com/sites/williamhaseltine/2018/04/02/aging-populations-will-challenge-healthcare-systems-all-over-the-world/ 

#5a8efe7c2cc3

4  https://www.un.org/development/desa/en/news/population/our-world-is-growing-older.html
5  https://www.fda.gov/media/84982/download
6   As of December 31, 2019, more than 10,000 patients have been treated with SPINRAZA across the post-marketing setting, the Expanded Access 

Program and clinical trials.

GAAP TO NON-GAAP RECONCILIATION

Biogen  2019 Annual  Report  9

Diluted EPS and net income attributable to Biogen Inc.

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

GAAP Diluted EPS

2019

2018

2017 1

2016

2015

$31.42

$21.58

$11.92

$16.93

$15.34

Adjustments to net income attributable to Biogen Inc. 

2.15

4.62

9.89

3.29

1.67

$33.57

$26.20

$21.81

$20.22

$17.01

$5,889

$4,431

$2,539

$3,703

$3,547

Non–GAAP Diluted EPS

GAAP Net Income Attributable to Biogen Inc.

Amortization of acquired intangible assets A, B

TECFIDERA litigation settlement charge B

Acquired in-process research and development

Research and development 

(Gain) loss on fair value remeasurement of contingent considerationC

Premium paid on purchase of Ionis common stock D

(Gain) loss on equity security investments

Net distribution to noncontrolling interests E

Restructuring, business transformation and other cost saving initiatives: 

2017 corporate strategy implementation F

Restructuring charges F

Cambridge manufacturing facility rationalization costs 

Hemophilia business separation costs

Gain on deconsolidation of variable interest entities

Loss on divestiture of Hillerød Denmark manufacturing operations G

Stock option expense H

Acquisition-related transaction and integration costs

Accelerated share-based compensation expense

Income tax effect related to reconciling items

Elimination of deferred tax asset 

Swiss Tax reform I

U.S. Tax reform J

Amortization included in Equity in loss of investee, net of tax K

–

3

2

–

–

–

55

26

28

7

31

–

(54)

–

78

490

–

–

–

(64)

–

747

–

113

10

(12)

162

(200)

(128)

815

–

120

–

63

–

–

132

18

1

–

19

–

–

–

–

–

374

455

–

–

15

–

–

–

–

33

55

18

(4)

–

–

–

–

365

–

–

–

31

–

–

–

–

93

–

–

–

–

–

–

–

44

11

12

–

–

–

–

–

–

–

(147)

(236)

(225)

(104)

11

–

125

1,174

–

–

–

–

–

–

–

–

Non–GAAP Net Income Attributable to Biogen Inc.

$6,291

$5,378

$4,645

$4,423

$3,932

Free Cash Flow Reconciliation

Net Cash Flows Provided by Operating Activities 2

$7,079

$6,188

$4,551

$4,522

$3,716

Purchases of property, plant and equipment (Capital Expenditures)

Contingent consideration related to Fumapharm AG acquisition

Free Cash Flow

(515)

(300)

(771)

(867)

(616)

(1,500)

(1,200)

(1,200)

(643)

(850)

$6,264

$3,917

$2,484

$2,706

$2,223

1   On February 1, 2017, we completed the spin-off of our hemophilia business. Our consolidated results of operations reflect the financial 

results of our hemophilia business through January 31, 2017.

2   Does not reflect the reclassification of amounts for 2016 and 2015 pursuant to the adoption of Accounting Standards  

Update No. 2016–09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting.

10  Biogen  2019 Annual  Report 

GAAP TO NON-GAAP RECONCILIATION

Notes to GAAP to Non-GAAP Reconciliation
A   Amortization and impairment of acquired 

intangible assets for the twelve months ended 
December 31, 2019, reflects the impact of a 
$215.9 million impairment charge related to 
certain in-process research and development 
(IPR&D) assets associated with the Phase 2b 
study of BG00011 (STX-100) for the potential 
treatment of idiopathic pulmonary fibrosis, which 
was discontinued during the third quarter of 2019.

Holding Ltd., Forward Pharma A/S (Forward 
Pharma) and certain related parties, which was 
effective as of February 1, 2017. Pursuant to this 
agreement, we obtained U.S. and rest of world 
licenses to Forward Pharma’s intellectual property, 
including Forward Pharma’s intellectual property 
related to TECFIDERA. In exchange, we paid 
Forward Pharma $1.25 billion in cash, of which 
$795.2 million was recognized within intangible 
assets in the first quarter of 2017.

 Amortization and impairment of acquired intangible 
assets for the twelve months ended December 31, 
2018, includes the impact of impairment charges 
related to certain IPR&D assets associated with our 
vixotrigine (BIIB074) program totaling $189.3 million 
that were recognized during the third quarter of 
2018. During the third quarter of 2018 we complet-
ed a Phase 2b study of vixotrigine for the potential 
treatment of painful lumbosacral radiculopathy 
(PLSR). The study did not meet its primary or 
secondary efficacy endpoints and we discontinued 
development of vixotrigine for the potential treatment 
of PLSR. As a result, we recognized an impairment 
charge of approximately $60.0 million during the 
third quarter of 2018 to reduce the fair value of 
the IPR&D intangible asset to zero. In addition, we 
delayed the initiation of the Phase 3 studies of 
vixotrigine for the potential treatment of trigeminal 
neuralgia (TGN) as we awaited the outcome of 
ongoing interactions with the U.S. Food and Drug 
Administration (FDA) regarding the design of the 
Phase 3 studies, a more detailed review of the data 
from the Phase 2b study of vixotrigine for the poten-
tial treatment of PLSR and insights from the Phase 2 
study of vixotrigine for the potential treatment of 
small fiber neuropathy. We reassessed the fair value 
of the TGN program using reduced expected lifetime 
revenues, higher expected clinical development 
costs and a lower cumulative probability of success. 
As a result of that reassessment, we recognized an 
impairment charge of $129.3 million during the third 
quarter of 2018 to reduce the fair value of the TGN 
IPR&D intangible asset to $41.8 million.

B   In January 2017 we entered into a settlement 
and license agreement among Biogen Swiss 
Manufacturing GmbH, Biogen International 

 We had an intellectual property dispute with 
Forward Pharma in the U.S. concerning intellectual 
property related to TECFIDERA.

 In March 2017 the U.S. intellectual property 
dispute was decided in our favor. Forward Pharma 
appealed to the U.S. Court of Appeals for the 
Federal Circuit. We evaluated the recoverability 
of the U.S. asset acquired from Forward Pharma 
and recorded a $328.2 million impairment charge 
in the first quarter of 2017 to adjust the carrying 
value of the acquired U.S. asset to fair value 
reflecting the impact of the developments in the 
U.S. legal dispute and continued to amortize the 
remaining net book value of the U.S. intangible 
asset in our consolidated statements of income 
utilizing an economic consumption model. The 
U.S. Court of Appeals for the Federal Circuit 
upheld the U.S. Patent and Trademark Office's 
March 2017 ruling and in January 2019 denied 
Forward Pharma's petition for rehearing. We 
evaluated the recoverability of the U.S. asset 
based upon these most recent developments and 
recorded a $176.8 million impairment charge in 
the fourth quarter of 2018 to reduce the remain-
ing net book value of the U.S. asset to zero.

 We have an intellectual property dispute with 
Forward Pharma in the European Union concerning 
intellectual property related to TECFIDERA.

 In March 2018 the European Patent Office (EPO) 
revoked Forward Pharma’s European Patent 
No. 2 801 355. Forward Pharma has filed an 
appeal to the Technical Boards of Appeal of the 
EPO and the appeal is pending. Based upon our 
assessment of this ruling, we continue to amortize 

 
 
 
 
 
 
Biogen  2019 Annual  Report  11

the remaining net book value of the rest of world 
intangible asset in our consolidated statements of 
income utilizing an economic consumption model. 
The remaining net book value of the TECFIDERA 
rest of world intangible asset as of December 31, 
2019, was $36.1 million.

 For the twelve months ended December 31, 2019, 
compared to the prior year period, the decrease 
in amortization of acquired intangible assets, 
excluding impairment charges, was primarily due 
to a net overall decrease in our expected rate of 
amortization for acquired intangible assets. This 
decrease was primarily due to lower amortization 
subsequent to the impairment in the fourth quarter 
of 2018 of the U.S. license to Forward Pharma's 
intellectual property, including Forward Pharma's 
intellectual property related to TECFIDERA, and 
higher expected lifetime revenues of TYSABRI.

C   (Gain) loss on fair value remeasurement of contin-
gent consideration for the twelve months ended 
December 31, 2019, reflects our adjustment to the 
value of our contingent consideration obligations 
related to the BG00011 asset, resulting in a gain 
of $61.2 million during the third quarter of 2019.

 (Gain) loss on fair value remeasurement of contin-
gent consideration for the twelve months ended 
December 31, 2018, reflects our adjustment 
to the fair value of our contingent consideration 
obligations related to our vixotrigine program for 
the potential treatment of TGN.

 In the third quarter of 2018 we decided to delay 
the initiation of the Phase 3 studies of vixotrigine 
for the potential treatment of TGN. As a result 
of that decision, we adjusted the value of our 
contingent consideration obligations related to 
the TGN program to reflect the lower cumulative 
probabilities of success resulting in a gain of 
$89.6 million in the third quarter of 2018.

 In the fourth quarter of 2018 we received feedback 
from the FDA regarding the design of the Phase 3 
studies of vixotrigine for the potential treatment of 
TGN. Following this feedback, we adjusted the fair 
value of our contingent consideration obligations 

related to our vixotrigine program for the poten-
tial treatment of TGN to reflect the increased 
probabilities of success and recognized a loss of 
$80.6 million in the fourth quarter of 2018.

D   In June 2018 we closed a 10-year exclusive col-

laboration agreement with Ionis Pharmaceuticals, 
Inc. (Ionis) to develop novel antisense oligonu-
cleotide drug candidates for a broad range of 
neurological diseases (the 2018 Ionis Agreement) 
for a total payment of $1.0 billion, consisting of 
an upfront payment of $375.0 million and the 
purchase of approximately 11.5 million shares of 
Ionis common stock at a cost of $625.0 million.

 The 11.5 million shares of Ionis common stock were 
purchased at a premium to their fair value at the 
transaction closing date. The premium consisted of 
acquiring the shares at a price above the fair value 
based on the trailing 10-day weighted-average close 
price prior to entering into the 2018 Ionis Agreement 
in April 2018 and the effect of certain holding period 
restrictions. We recorded an asset of $462.9 million 
in investments and other assets in our condensed 
consolidated balance sheets reflecting the fair value 
of the common stock as of the purchase date and 
a charge of $162.1 million to research and devel-
opment expense in our condensed consolidated 
statements of income in the second quarter of 2018 
reflecting the premium paid for the common stock.

E   Net distribution to noncontrolling interests reflects 

the $50.0 million payment to Neurimmune 
SubOne AG (Neurimmune), net of Neurimmune's 
tax, to further reduce the previously negotiated 
royalty rates payable on products developed under 
our amended collaboration and license agreement 
with Neurimmune, including royalties payable  
on potential commercial sales of aducanumab,  
by an additional 5%.

F   2017 corporate strategy implementation and 

restructuring charges are related to our efforts to 
create a leaner and simpler operating model.

G   In August 2019 we completed the sale of all of the 
outstanding shares of our subsidiary that owned 
our biologics manufacturing operations in Hillerød, 

 
 
 
 
 
12  Biogen  2019 Annual  Report 

GAAP TO NON-GAAP RECONCILIATION

Denmark to FUJIFILM Corporation (FUJIFILM). 
Upon the closing of this transaction, we received 
approximately $881.9 million in cash, which may 
be adjusted based on contractual terms, which 
are discussed below. We determined that the 
operations disposed of in this transaction did not 
meet the criteria to be classified as discontinued 
operations under the applicable guidance.

 As part of this transaction, we have provided 
FUJIFILM with certain minimum batch production 
commitment guarantees. There is a risk that 
the minimum contractual batch production 
commitments will not be met. Based upon current 
estimates we expect to incur an adverse commit-
ment obligation of approximately $74.0 million 
associated with such guarantees. We may adjust 
this estimate based upon changes in business 
conditions, which may result in the increase or 
reduction of this adverse commitment obligation 
in subsequent periods. We also may be obligated 
to indemnify FUJIFILM for liabilities that existed 
relating to certain business activities incurred 
prior to the closing of this transaction.

 In addition, we may earn certain contingent 
payments based on future manufacturing activi-
ties at the Hillerød facility. For the disposition of 
a business, our policy is to recognize contingent 
consideration when the consideration is real-
izable. We currently believe the probability of 
earning these payments is remote and therefore 
we did not include these contingent payments in 
our calculation of the fair value of the operations.

 As part of this transaction, we entered into  
certain manufacturing services agreements with 
FUJIFILM pursuant to which FUJIFILM will use  
the Hillerød facility to produce commercial 
products for us, such as TYSABRI, as well as 
other third-party products.

 In connection with this transaction we recognized 
a total net loss of approximately $164.4 million in 
our consolidated statements of income. This loss 
included a pre-tax loss of $95.5 million, which 
was recorded in loss on divestiture of Hillerød, 
Denmark manufacturing operations.  

The loss recognized was based on exchange rates 
and business conditions on the closing date of 
this transaction, and included costs to sell our 
Hillerød, Denmark manufacturing operations of 
approximately $11.2 million and our estimate 
of the fair value of an adverse commitment of 
approximately $114.0 million associated with the 
guarantee of future minimum batch production 
at the Hillerød facility. The value of this adverse 
commitment was determined using a probabil-
ity-weighted estimate of future manufacturing 
activity. We also recorded a tax expense of 
$68.9 million related to this transaction. During 
the fourth quarter of 2019 we recorded a 
$40.2 million reduction in our estimate of the 
future minimum batch commitment utilizing our 
current manufacturing forecast, which reflects the 
impact of forecasted batches of aducanumab, 
resulting in a reduction in the pre-tax loss on 
divestiture from $95.5 million to $55.3 million.

H   Stock option expense reflects the accelerated vest-
ing of stock options previously granted to Nightstar 
Therapeutics plc (NST) employees as a result of our 
acquisition of NST in the second quarter of 2019.

I   During the third quarter of 2019 a new taxing 
regime in the country and certain cantons of 
Switzerland was enacted and we refer to this as 
Swiss Tax Reform. As a result of the impact of 
Swiss Tax Reform, we recorded an income tax 
benefit of approximately $54.3 million resulting 
from a remeasurement of our deferred tax assets 
and liabilities in the third quarter of 2019.

J    The Tax Cuts and Jobs Act of 2017 (2017 Tax 
Act) resulted in significant changes to the U.S. 
corporate income tax system. These changes 
include a federal statutory rate reduction from 
35% to 21%, the elimination or reduction of certain 
domestic deductions and credits and limitations on 
the deductibility of interest expense and executive 
compensation. The 2017 Tax Act also transitions 
international taxation from a worldwide system 
to a modified territorial system, which has the 
effect of subjecting certain earnings of our foreign 
subsidiaries and collaborations to immediate U.S. 
taxation as global intangible low-taxed income 

 
 
 
 
Biogen  2019 Annual  Report  13

(GILTI) or Subpart F income, and includes base 
erosion prevention measures on U.S. earnings and 
the reduced effective tax rate on income that comes 
from U.S. exports, called Foreign Derived Intangible 
Income. During the fourth quarter of 2018 we 
elected to recognize deferred taxes for the basis 
differences expected to reverse as GILTI is incurred 
and have established initial deferred tax balances, 
as of the enactment date of the 2017 Tax Act.

    U.S. tax reform amounts for the twelve months 
ended December 31, 2018, reflects the effect 
of an expense of $135.8 million related to the 
establishment of GILTI deferred taxes.

    Tax reform amounts for the twelve months ended 
December 31, 2018, reflects the effect of a net 
reduction of $34.6 million to our 2017 preliminary 
estimate associated with a one-time mandatory 
deemed repatriation tax on accumulated foreign 
subsidiaries' previously untaxed foreign earnings, 
an expense of $12.7 million for the remeasurement 
of our deferred tax balances and an $11.0 million 
expense to reflect other aspects of the 2017 Tax Act.

K   Amortization included in equity in loss of investee, 
net of tax reflects the amortization of the differ-
ences between the fair value of our investment in 
Samsung Bioepis Co., Ltd. and the carrying value 
of our interest in the underlying net assets of the 
investee. These basis differences are amortized 
over their economic life.

  NOTES: 

 Our “Non-GAAP net income attributable to Biogen 
Inc.” and “Non-GAAP diluted earnings per share” 
financial measures exclude the following items from 
“GAAP net income attributable to Biogen Inc.” and 
“GAAP diluted earnings per share”: (1) purchase 
accounting, merger-related and other adjustments, 
(2) hemophilia business separation costs, (3) re-
structuring, business transformation and other cost 
saving initiatives, (4) (gain) loss on equity security 
investments, (5) stock option expense, (6) other 
select items and (7) their related tax effects. “Free 
Cash Flow” is defined as net cash flows provided 
by operating activities less purchases of property, 
plant and equipment and contingent consideration 
related to our acquisition of Fumapharm AG as 
disclosed within our Annual Report on Form 10-K. 
We believe that the disclosure of these Non-GAAP 
financial measures provides additional insight 
into the ongoing economics of our business and 
reflects how we manage our business internally, 
set operational goals and form the basis of our 
management incentive programs. These Non-GAAP 
financial measures are not in accordance with 
generally accepted accounting principles in the 
United States and should not be viewed in isolation 
or as a substitute for reported, or GAAP, net income 
attributable to Biogen Inc., GAAP diluted earnings 
per share and net cash flows provided by operating 
activities. Numbers may not foot due to rounding. 
Additional reconciliations of our Non-GAAP financial 
measures can be found in the Investors section of 
www.biogen.com.

 
14  Biogen  2019 Annual  Report 

SAFE HARBOR

This Annual Report contains forward-looking 
statements, including statements made pursuant to 
the safe harbor provisions of the Private Securities 
Litigation Reform Act of 1995, relating to: our strat-
egy and plans; corporate strategy update; pipeline 
potential and progress; potential of our commercial 
business and pipeline programs; the prospects 
of our product portfolio; capital allocation and 
investment strategy; clinical development programs, 
clinical trials and data readouts and presentations; 
regulatory filings and the timing thereof; risks and 
uncertainties associated with drug development and 
commercialization; the potential benefits, safety and 
efficacy of our products and investigational thera-
pies; anticipated benefits and potential of invest-
ments, collaborations and business development 
activities; our future financial and operating results; 
and the potential impact of the COVID-19 pandemic 
on our business and operations. These forward-look-
ing statements may be accompanied by such 
words as “aim,” “anticipate,” “believe,” “could,” 
“estimate,” “expect,” “forecast,” “goal,” “intend,” 
“may,” “plan,” “potential,” “possible,” “will,” “would” 
and other words and terms of similar meaning. Drug 
development and commercialization involve a high 
degree of risk, and only a small number of research 
and development programs result in commercializa-
tion of a product. Results in early stage clinical trials 
may not be indicative of full results or results from 
later stage or larger scale clinical trials and do not 
ensure regulatory approval. You should not place 
undue reliance on these statements or the scientific 
data presented. 

These statements involve risks and uncertainties that 
could cause actual results to differ materially from 
those reflected in such statements, including: our 
dependence on sales from our products; difficulties in 
obtaining and maintaining adequate coverage, pricing 
and reimbursement for our products; 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; failure 
to compete effectively due to significant product 
competition in the markets for our products; failure 

to successfully execute or realize the anticipated 
benefits of our strategic and growth initiatives; the 
risk that positive results in a clinical trial may not be 
replicated in subsequent or confirmatory trials or suc-
cess in early stage clinical trials may not be predictive 
of results in later stage or large scale clinical trials or 
trials in other potential indications; risks associated 
with clinical trials, including our ability to adequately 
manage clinical activities, unexpected concerns that 
may arise from additional data or analysis obtained 
during clinical trials, regulatory authorities may require 
additional information or further studies or may fail to 
approve or may delay approval of our drug candidates; 
the occurrence of adverse safety events, restrictions 
on use with our products or product liability claims; 
risks relating to technology failures or breaches; our 
dependence on collaborators, joint venture partners 
and other third parties for the development, regulatory 
approval and commercialization of products and 
other aspects of our business, which are outside of 
our full control; risks associated with current and 
potential future healthcare reforms; risks relating to 
management and key personnel changes, including 
attracting and retaining key personnel; failure to 
comply with legal and regulatory requirements; the 
risks of doing business internationally, including 
currency exchange rate fluctuations; risks relating to 
investment in our manufacturing capacity; problems 
with our manufacturing processes; risks related to 
commercialization of biosimilars; fluctuations in our 
operating results; fluctuations in our effective tax rate; 
risks related to investment in properties; the market, 
interest and credit risks associated with our portfolio 
of marketable securities; risks relating to share 
repurchase programs; risks relating to access to 
capital and credit markets; risks related to indebt-
edness; environmental risks; risks relating to the 
distribution and sale by third parties of counterfeit or 
unfit 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; 
the impact related to the effect of COVID-19 or other 
public health epidemics on our sales and operations, 
including employees; and the other risks and uncer-
tainties that are described in the Risk Factors section 
of our most recent annual or quarterly report and in 
other reports we have filed with the U.S. Securities 
and Exchange Commission. 

Biogen  2019 Annual  Report  15

These statements are based on our current beliefs 
and expectations and speak only as of April 10, 
2020. We do not undertake any obligation to publicly 
update any forward-looking statements, except as 
required by law. 

NOTE REGARDING TRADEMARKS: AVONEX®, 
BIOGEN®, PLEGRIDY®, SPINRAZA®, TECFIDERA®, 
TYSABRI® and VUMERITY® are registered trademarks 
of Biogen. BENEPALI™, FLIXABI™, FUMADERM™ 
and IMRALDI™ are trademarks of Biogen. Other 
trademarks referenced in this Annual Report are the 
property of their respective owners.

16  Biogen  2019 Annual  Report 

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, 2019 

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, MA 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

Trading Symbol(s)
BIIB

Name of Each Exchange Where Registered
The Nasdaq Global Select Market

Securities registered pursuant to Section 12(g) of the Act:
None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities 

Act.    Yes 

        No 

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the 

Act.    Yes 

        No 

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of 
the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was 
required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes 

       No 
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be 

submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such 
shorter period that the registrant was required to submit such files).    Yes 

        No 

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, 
a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated 
filer,” “smaller reporting company” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer
Non-accelerated filer

Accelerated filer
Smaller reporting company
Emerging growth company

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

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

Act).    Yes  

       No 

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

that any person whose shares are not included in such calculation is an affiliate) computed by reference to the price at 
which the common stock was last sold as of the last business day of the registrant’s most recently completed second 
fiscal quarter was $43,010,112,437.

As of February 4, 2020, the registrant had 174,064,011 shares of common stock, $0.0005 par value, outstanding.

Portions of the definitive proxy statement for our 2020 Annual Meeting of Stockholders are incorporated by reference 

into Part III of this report.

DOCUMENTS INCORPORATED BY REFERENCE

BIOGEN INC.
ANNUAL REPORT ON FORM 10-K
For the Year Ended December 31, 2019 
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 Accountant Fees and Services

Item 15.

Exhibits and Financial Statement Schedules

Item 16.

Form 10-K Summary

PART IV

Signatures

Consolidated Financial Statements

Page

1

33

48

48

49

49

50

52

55

86

88

88

88

89

90

90

90

90

90

91
91

95

F- 1

 
 
NOTE REGARDING FORWARD-LOOKING STATEMENTS 

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

Securities Litigation Reform Act of 1995 (the Act) with the intention of obtaining the benefits of the “Safe Harbor” 
provisions of the Act. These forward-looking statements may be accompanied by such words as “aim,” “anticipate,” 
“believe,” “could,” “estimate,” “expect,” “forecast,” "goal," “intend,” “may,” “plan,” “potential,” “possible,” “will,” 
“would” 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, milestone, royalty and other payments 
under licensing, collaboration, acquisition or divestiture 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 timing, outcome and impact of administrative, regulatory, legal and other proceedings related to our patents 
and other proprietary and intellectual property rights, tax audits, assessments and settlements, pricing matters, 
sales and promotional practices, product liability and other matters;

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

exclusivity;

• 

the potential impact of increased product competition in the markets in which we compete, including increased 
competition from generics, biosimilars, prodrugs and products approved under abbreviated regulatory pathways;

•  our plans and investments in our core and emerging growth areas, as well as implementation of our corporate 

strategy;

• 

the drivers for growing our business, including our plans and intention to commit resources relating to research 
and development programs and business development opportunities, as well as the potential benefits and 
results of, and the anticipated timing to complete, certain business development transactions;

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

• 

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

•  adverse safety events involving our marketed products, generic or biosimilar versions of our marketed products 

or any other products from the same class as one of our products;

• 

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

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

changes in our manufacturing capabilities and activities in new or existing 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 on our results of operations and liquidity of the United Kingdom's (U.K.) departure from the 
European Union (E.U.);

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

the impact of new laws, including the Swiss Federal Act on Tax Reform and AHV Financing, regulatory 
requirements, judicial decisions and accounting standards.

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

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

NOTE REGARDING COMPANY AND PRODUCT REFERENCES

References in this report to:

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

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

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

•  "ELOCTATE" refers to both ELOCTATE (the trade name for Antihemophilic Factor (recombinant), Fc Fusion 

Protein in the U.S., Canada and Japan) and ELOCTA (the trade name for Antihemophilic Factor 
(recombinant), Fc Fusion Protein in the E.U.).

NOTE REGARDING TRADEMARKS

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

ZINBRYTA® are registered trademarks of Biogen. 

BENEPALITM, FLIXABITM, FUMADERMTM and IMRALDITM are trademarks of Biogen. 

ALPROLIX®, ELOCTATE®, ENBREL®, EYLEA®, FAMPYRATM, GAZYVA®, HUMIRA®, LUCENTIS®, OCREVUS®, 
REMICADE®, SkySTARTM and other trademarks referenced in this report are the property of their respective owners.

Item 1.  

Business

Overview

PART I

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

innovative therapies for people living with serious neurological and neurodegenerative diseases as well as related 
therapeutic adjacencies. Our core growth areas include multiple sclerosis (MS) and neuroimmunology; Alzheimer’s 
disease (AD) and dementia; neuromuscular disorders, including spinal muscular atrophy (SMA) and amyotrophic 
lateral sclerosis (ALS); movement disorders, including Parkinson's disease; and ophthalmology. We are also focused 
on discovering, developing and delivering worldwide innovative therapies in our emerging growth areas of 
immunology; neurocognitive disorders; acute neurology; and pain. In addition, we commercialize biosimilars of 
advanced biologics. We support our drug discovery and development efforts through the commitment of significant 
resources to discovery, research and development programs and business development opportunities.

Our marketed products include TECFIDERA, AVONEX, PLEGRIDY, TYSABRI, VUMERITY and FAMPYRA for the 
treatment of MS; SPINRAZA for the treatment of SMA; and FUMADERM for the treatment of severe plaque psoriasis. 
We also have certain business and financial rights with respect to RITUXAN for the treatment of non-Hodgkin's 
lymphoma, chronic lymphocytic leukemia (CLL) and other conditions; RITUXAN HYCELA for the treatment of non-
Hodgkin's lymphoma and CLL; GAZYVA for the treatment of CLL and follicular lymphoma; OCREVUS for the treatment 
of primary progressive MS (PPMS) and relapsing MS (RMS); and other potential anti-CD20 therapies pursuant to our 
collaboration arrangements with Genentech, Inc. (Genentech), a wholly-owned member of the Roche Group. For 
additional information on our collaboration arrangements with Genentech, please read Note 18, Collaborative and 
Other Relationships, to our consolidated financial statements included in this report.

For over two decades we have led in the research and development of new therapies to treat MS, resulting in 

our leading portfolio of MS treatments. Now our research is focused on additional improvements in the treatment of 
MS, such as the development of next generation therapies for MS, with a goal to reverse or possibly repair damage 
caused by the disease. We also introduced the first approved treatment for SMA and are continuing to pursue 
research and development for potential advancements in the treatment of SMA, including a muscle enhancement 
program, novel antisense oligonucleotide (ASO) drug candidates and an oral splicing modulator. We are also applying 
our scientific expertise to solve some of the most challenging and complex diseases, including AD, ALS, Parkinson's 
disease, choroideremia (CHM), X-linked retinitis pigmentosa (XLRP), systemic lupus erythematosus (SLE), cutaneous 
lupus erythematosus (CLE), cognitive impairment associated with schizophrenia (CIAS), stroke, epilepsy and pain.

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

that expands access to medicines and reduce the cost burden for healthcare systems. Through Samsung Bioepis 
Co., Ltd. (Samsung Bioepis), our joint venture with Samsung BioLogics Co., Ltd. (Samsung BioLogics), we market and 
sell  BENEPALI, an etanercept biosimilar referencing ENBREL, IMRALDI, an adalimumab biosimilar referencing 
HUMIRA, and FLIXABI, an infliximab biosimilar referencing REMICADE, in certain countries in Europe and have 
exclusive rights to commercialize these products in China. Additionally, we have exclusive rights to commercialize two 
potential ophthalmology biosimilar products, SB11 referencing LUCENTIS and SB15 referencing EYLEA, in major 
markets worldwide, including the U.S., Canada, Europe, Japan and Australia. For additional information on our 
collaboration arrangements with Samsung Bioepis, please read Note 18, Collaborative and Other Relationships, to 
our consolidated financial statements included in this report.

1

 
Key Business Developments

The following is a summary of key developments affecting our business since the beginning of 2019. 

For additional information on our acquisitions, collaborative and other relationships discussed below, please 

read Note 2, Acquisitions, Note 3, Divestitures, Note 18, Collaborative and Other Relationships, and Note 19, 
Investments in Variable Interest Entities, to our consolidated financial statements included in this report.

Acquisitions, Collaborative and Other Relationships

Skyhawk Therapeutics, Inc.

In January 2019 we entered into a collaboration and research and development services agreement with 

Skyhawk Therapeutics, Inc. (Skyhawk) pursuant to which the companies are leveraging Skyhawk's SkySTAR 
technology platform with the goal of discovering innovative small molecule treatments for patients with neurological 
diseases, including MS and SMA. We are responsible for the development and potential commercialization of any 
therapies resulting from this collaboration. In October 2019 we amended this agreement to add an additional 
discovery program.

Nightstar Therapeutics plc

In June 2019 we completed our acquisition of all of the outstanding shares of Nightstar Therapeutics plc (NST), 

a clinical-stage gene therapy company focused on adeno-associated virus (AAV) treatments for inherited retinal 
disorders. As a result of this acquisition, we added two mid- to late-stage clinical assets, as well as preclinical 
programs, in ophthalmology. 

Divestiture of Hillerød, Denmark Manufacturing Operations

In August 2019 we completed the sale of all of the outstanding shares of our subsidiary that owned our 

biologics manufacturing operations in Hillerød, Denmark to FUJIFILM Corporation (FUJIFILM). 

Samsung Bioepis

In December 2019 we completed a transaction with Samsung Bioepis and secured the exclusive rights to 
commercialize two potential ophthalmology biosimilar products, SB11 referencing LUCENTIS and SB15 referencing 
EYLEA, in major markets worldwide, including the U.S., Canada, Europe, Japan and Australia. We also acquired an 
option to extend our existing commercial agreement with Samsung Bioepis for BENEPALI, IMRALDI and FLIXABI in 
Europe and obtained exclusive rights to commercialize these products in China.

BIIB080 Option Exercise

In December 2019 we exercised our option with Ionis Pharmaceuticals, Inc. (Ionis) and obtained a worldwide, 
exclusive, royalty-bearing license to develop and commercialize BIIB080 (tau ASO), an investigational treatment for 
AD.

Pfizer Inc.

In January 2020 we entered into an agreement to acquire PF-05251749, a novel CNS-penetrant small molecule 
inhibitor of casein kinase 1 (CK1), for the potential treatment of patients with behavioral and neurological symptoms 
across various psychiatric and neurological diseases from Pfizer Inc. (Pfizer). In particular, we plan to develop the 
Phase 1 asset for the treatment of sundowning in AD and irregular sleep wake rhythm disorder (ISWRD) in 
Parkinson’s disease. This transaction is subject to customary closing conditions, including the expiration of the 
applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 in the U.S. We expect this 
transaction to close in the first quarter of 2020.

Other Key Developments

VUMERITY

In October 2019 the U.S. Food and Drug Administration (FDA) approved VUMERITY for the treatment of RMS. 

The FDA approval of VUMERITY was based on a New Drug Application (NDA) submitted under the 505(b)(2) filing 
pathway. It included interim exposure and safety findings from EVOLVE-MS-1, an ongoing, Phase 3, single-arm, open 
label, two-year safety study evaluating VUMERITY in patients with relapsing remitting MS (RRMS), and data from 
pharmacokinetic bridging studies comparing VUMERITY and TECFIDERA to establish bioequivalence, and relied, in 
part, on the FDA's findings of safety and efficacy for TECFIDERA. In November 2019 VUMERITY became available in 
the U.S.

2

Aducanumab (A  mAb)

In October 2019 we and our collaboration partner Eisai Co., Ltd. (Eisai) announced that we plan to pursue 

regulatory approval for aducanumab, our anti-amyloid beta antibody candidate for the potential treatment of AD, in 
the U.S.

2019 Share Repurchase Programs

In March 2019 our Board of Directors authorized a program to repurchase up to $5.0 billion of our common 
stock (March 2019 Share Repurchase Program). Our March 2019 Share Repurchase Program does not have an 
expiration date. All share repurchases under our March 2019 Share Repurchase Program will be retired.

In December 2019 our Board of Directors authorized a program to repurchase up to $5.0 billion of our common 
stock (December 2019 Share Repurchase Program). Our December 2019 Share Repurchase Program does not have 
an expiration date. All share repurchases under our December 2019 Share Repurchase Program will be retired.

Board of Directors Update

In June 2019 stockholders elected two new independent directors, William A. Hawkins and Jesus B. Mantas, to 
Biogen's Board of Directors, who are each serving for a one-year term until the 2020 annual meeting of stockholders 
and their successors are duly elected and qualified.

Management Changes

During 2019 we announced the following management changes:

•  The appointment of Alfred Sandrock, Jr., M.D., Ph.D. as Executive Vice President, Research and 

Development; and

•  The appointment of Alphonse Galdes, Ph.D., as Executive Vice President, Pharmaceutical Operations and 

Technology.

For additional information on these and our other executive officers, please read the subsection entitled 

"Information about our Executive Officers" included in this report.

Product and Pipeline Developments

Core Growth Areas

Multiple Sclerosis and Neuroimmunology

TECFIDERA (dimethyl fumarate)

• 

• 

In May 2019, at the 71st annual meeting of the American Academy of Neurology (AAN) in Philadelphia, PA, 
we presented re-analyzed pooled images from the Phase 3 DEFINE and CONFIRM studies that showed that 
treatment with TECFIDERA significantly slowed the rate of whole brain volume loss by 35.9% during the 
second year of treatment compared to placebo.

In September 2019, at the 35th Congress of the European Committee for Treatment and Research in MS 
(ECTRIMS) and 24th Annual Conference of Rehabilitation in MS in Stockholm, Sweden, we presented new 
10-year results from the ongoing Phase 3 ENDORSE extension study and comparative effectiveness 
analyses of TECFIDERA that support the consistent, long-term benefits of treatment with TECFIDERA.

TYSABRI (natalizumab)

• 

• 

• 

In January 2019 the first patient was enrolled in the global Phase 3b NOVA study evaluating the efficacy 
and safety of extended interval dosing (EID; every six weeks) for natalizumab compared to standard interval 
dosing in patients with RMS.

In May 2019, at the 71st annual meeting of the AAN in Philadelphia, PA, we presented updated safety 
analyses from the TOUCH database safety analysis evaluating EID of natalizumab (of approximately every 
six weeks) compared to every four-week dosing based on the TOUCH prescribing program database.

In September 2019, at the 35th Congress of ECTRIMS and 24th Annual Conference of Rehabilitation in MS 
in Stockholm, Sweden, we presented new data from the observational, open-label, single-arm STRIVE study 
that support the real-world long-term effectiveness of TYSABRI in patients with early RMS, who are within 
three years from diagnosis and are anti-JC virus antibody negative.

3

AVONEX (interferon beta-1a) and PLEGRIDY (peginterferon beta-1a)

• 

• 

In September 2019, at the 35th Congress of ECTRIMS and 24th Annual Conference of Rehabilitation in MS 
in Stockholm, Sweden, we presented new data from two real-world observational studies that provide 
further support that exposure to interferon beta treatment, including AVONEX and PLEGRIDY, before 
conception and/or during pregnancy is not expected to have an adverse effect on pregnancy or infant 
growth outcomes.

In October 2019 the European Medicines Agency (EMA) updated the summaries of product characteristics 
for AVONEX and PLEGRIDY to remove pregnancy contraindications and, where clinically needed, to allow use 
during pregnancy and breastfeeding in women with RMS.

VUMERITY (diroximel fumarate; DRF)

• 

• 

• 

• 

• 

In May 2019, at the 71st annual meeting of the AAN in Philadelphia, PA, we presented updated safety and 
exploratory efficacy results from the ongoing open-label EVOLVE-MS-1 study of VUMERITY in RMS.

In May 2019 we presented new interim data from the EVOLVE-MS-1 study at the annual meeting of the 
Consortium of Multiple Sclerosis Centers in Seattle, WA. These data indicated that VUMERITY was 
generally well tolerated and significantly reduced disease activity in newly diagnosed RMS patients and 
those previously treated with interferons or glatiramer acetate. Treatment discontinuations due to 
gastrointestinal events occurred at a low rate over one year.

In July 2019 we and Alkermes plc announced positive topline results from EVOLVE-MS-2, a large, 
randomized, double-blind, five-week, Phase 3 study of VUMERITY for RMS, compared to TECFIDERA. 
VUMERITY was statistically superior to TECFIDERA on the study's pre-specified primary endpoint, with 
patients treated with VUMERITY self-reporting significantly fewer days of key gastrointestinal symptoms with 
intensity scores   2 on the Individual Gastrointestinal Symptom and Impact Scale, as compared to 
TECFIDERA (p=0.0003).

In September 2019, at the 35th Congress of ECTRIMS and 24th Annual Conference of Rehabilitation in MS 
in Stockholm, Sweden, we presented interim data from the Phase 3 EVOLVE-MS-1 study that support the 
potential of VUMERITY as a novel oral fumarate.

In November 2019, at the 27th Annual Meeting of the European Charcot Foundation in Italy, we presented 
results from the Phase 3 EVOLVE-MS-2 study demonstrating the improved patient-assessed gastrointestinal 
tolerability of VUMERITY compared to TECFIDERA.

BIIB091 (BTK inhibitor)

• 

In May 2019 the first participant was dosed in the Phase 1 study of BIIB091 in MS.

• 

In December 2019 dosing began for the final multiple ascending dose cohort in the Phase 1 study of 
BIIB091 in MS.

Alzheimer's Disease and Dementia

Aducanumab (A  mAb)

• 

• 

In March 2019 we and our collaboration partner Eisai announced the decision to discontinue the global 
Phase 3 trials, ENGAGE and EMERGE, designed to evaluate the efficacy and safety of aducanumab in 
patients with mild cognitive impairment due to AD and mild AD dementia.

In October 2019 we and our collaboration partner Eisai announced that we plan to pursue regulatory 
approval for aducanumab in the U.S. and that the Phase 3 EMERGE study met its primary endpoint showing 
a significant reduction in clinical decline. We believe that results from a subset of patients in the Phase 3 
ENGAGE study who received sufficient exposure to high dose aducanumab support the findings from 
EMERGE. The decision to file is based on a new analysis, conducted in consultation with the FDA, of a 
larger dataset from the Phase 3 EMERGE and ENGAGE trials that were discontinued in March 2019 
following a futility analysis.

• 

In December 2019, at the 12th Clinical Trials on Alzheimer's Disease annual meeting in San Diego, CA, we 
presented topline results from the Phase 3 EMERGE and ENGAGE trials of aducanumab.

4

BAN2401 (A  mAb)

• 

In May 2019 our collaboration partner Eisai dosed the first patient in the global Phase 3 study (Clarity AD) 
of BAN2401 in early AD.

BIIB092 (gosuranemab)

• 

In September 2019 we completed enrollment of the Phase 2 study of gosuranemab for early AD.

Neuromuscular Disorders

SPINRAZA (nusinersen)

• 

• 

• 

• 

• 

• 

• 

• 

• 

In February 2019 SPINRAZA was approved by the China National Medical Products Association for the 
treatment of 5q SMA.

In April 2019 we presented new data illustrating the rapidly progressive nature of SMA in adults, 
adolescents and older children. We also presented data from the NURTURE study, highlighting the benefits 
of pre-symptomatic treatment and findings on the role of neurofilament as a potential biomarker for 
predicting motor function in SMA. These data were presented at the Muscular Dystrophy Association 
Clinical and Scientific Conference in Orlando, FL.

In April 2019 data from CS2/CS12, an open-label study of the safety and tolerability of SPINRAZA in 
individuals with later-onset SMA, were published in the peer-reviewed journal Neurology, the medical journal 
of the AAN. The data showed that individuals with later-onset SMA, treated with SPINRAZA, regained motor 
function that had been previously lost and that treatment stabilized their disease activity leading to 
improvements in activities of daily living.

In May 2019, at the 71st annual meeting of the AAN in Philadelphia, PA, we presented data from the 
NURTURE study that demonstrated that pre-symptomatic infants with SMA treated with SPINRAZA over 
three years achieved motor milestones that are more consistent with normal childhood development, as 
well as interim results from the ENDEAR/CHERISH/SHINE open-label extension study that showed that 
treatment with SPINRAZA, particularly when initiated earlier, leads to progressive motor milestone 
improvements and increased survival rates for individuals with infantile-onset SMA.

In May 2019 The National Institute for Health and Care Excellence (NICE) in the U.K. recommended funding 
for SPINRAZA on the National Health Service. The positive recommendation is for the treatment of infants, 
children and adults with 5q SMA, including pre-symptomatic and symptomatic SMA Types 1, 2 and 3.

In June and July 2019 we presented new results from the NURTURE study, adding data to the longest study 
of SMA in pre-symptomatic infants (n=25). The data reported, after up to 45.1 months of analysis, 
continued to demonstrate efficacy and safety in patients treated pre-symptomatically with SPINRAZA in 
comparison to the natural history of SMA. These new data also showed that patients treated with 
SPINRAZA had continuous improvement, with the majority of patients achieving motor milestones within 
timeframes consistent with normal development. These data were presented at the Cure SMA Annual SMA 
Conference in Anaheim, CA and the 5th Congress of the European Academy of Neurology in Oslo, Norway.

In September 2019 we announced that we plan to initiate DEVOTE, a new Phase 2/3 study evaluating 
whether a higher dose of SPINRAZA can offer even greater efficacy in treating SMA, as well as the safety 
and tolerability of SPINRAZA, when administered at a higher dose.

In September 2019 we presented new data further demonstrating the safety and efficacy of treatment with 
SPINRAZA in individuals with later-onset SMA at the 13th Congress of the European Paediatric Neurology 
Society in Athens, Greece. An integrated analysis from SHINE, an open-label extension study for patients 
with SMA who participated in prior SPINRAZA studies, found that children with later-onset SMA (Type 2 or 
Type 3) experienced improvements or stabilization in one or more measures of motor function for up to 
nearly six years, in contrast to the expected decline observed in natural history cohorts.

In October 2019 the journal Neuromuscular Disorders published data from NURTURE, the first study 
investigating a treatment targeting the underlying cause of SMA in infants treated pre-symptomatically. Data 
from the NURTURE study demonstrated that infants who initiated treatment with SPINRAZA prior to the 
onset of clinical symptoms attained unparalleled results compared to the natural history of the disease. 
These published results from the NURTURE study were previously presented at the 2019 Cure SMA Annual 

5

SMA Conference in Anaheim, CA and the 5th Congress of the European Academy of Neurology in Oslo, 
Norway.

BIIB067 (tofersen) - ALS

• 

• 

In March 2019 the first patient was dosed in the Phase 3 VALOR study of tofersen in adults with ALS with a 
confirmed superdioxide dismutate 1 (SOD1) mutation.

In May 2019 we presented interim results of the Phase 1/2 study of tofersen. The data demonstrated a 
statistically significant reduction in SOD1 protein levels and a numerical trend towards slowing of clinical 
decline in SOD1-ALS patients treated with tofersen compared to placebo. The data were presented at the 
71st annual meeting of the AAN in Philadelphia, PA and The European Network for the Cure of ALS meeting 
in Tours, France.

BIIB100 (XPO1 inhibitor) - ALS

• 

In June 2019 the first patient was dosed in the Phase 1 study of BIIB100 in sporadic ALS.

Movement Disorders

BIIB054 (cinpanemab) - Parkinson's Disease

• 

In May 2019 we completed enrollment of the Phase 2 study of BIIB054 for Parkinson's disease.

BIIB094 (ION859) - Parkinson's Disease

• 

In August 2019 the first patient in the Phase 1 study of BIIB094, an ASO targeting leucine-rich repeat 
kinase 2 (LRRK2) for Parkinson's disease, was dosed.

Ophthalmology

BIIB111 (timrepigene emparvovec) - CHM

• 

In November 2019 we completed enrollment of the Phase 3 STAR study of timrepigene emparvovec for 
CHM.

Emerging Growth Areas

Immunology

Dapirolizumab Pegol (anti-CD40L) - SLE

• 

In June 2019 our collaboration partner UCB presented interim results from the Phase 2b study of 
dapirolizumab pegol (DZP) in patients with active SLE despite standard-of-care treatment. The primary 
endpoint of the study, which was to demonstrate a dose response at 24 weeks on the British Isles Lupus 
Assessment Group-based Composite Lupus Assessment (p=0.07), was not met. The study did 
demonstrate consistent and potentially meaningful improvements for the majority of clinical endpoints in 
patients treated with DZP compared with placebo. In addition, biomarker data demonstrated evidence of 
proof of biology. DZP was well tolerated and demonstrated an acceptable safety profile. The data were 
presented at the European Congress of Rheumatology (EULAR) 2019 in Madrid, Spain.

BIIB059 (anti-BDCA2) - CLE/SLE

• 

• 

In May 2019 we completed enrollment of the Phase 2 LILAC study of BIIB059 for CLE and SLE.

In December 2019 we announced positive top-line results from the Phase 2 LILAC study evaluating the 
efficacy and safety of BIIB059 in CLE and SLE. The CLE part of the study met its primary endpoint 
(p<0.001) by demonstrating a dose response of BIIB059 on the percent change from baseline in the 
Cutaneous Lupus Erythematosus Disease Area and Severity Index Activity (CLASI-A) score at week 16 in 
individuals with CLE. Study participants with CLE treated with 50 mg, 150 mg and 450 mg of BIIB059 
experienced reductions in CLASI-A scores of 40.9% (p=0.008), 48.0% (p=0.001) and 42.5% (p=0.001), 
respectively, versus 14.5% with placebo. CLASI-A is a well-defined and reliable outcome measure that has 
been shown to detect meaningful change in CLE skin disease activity.

The SLE part of the study also met its primary endpoint of reducing disease activity in individuals with SLE 
as measured by change from baseline in total active joint count at week 24 (treatment difference = -3.4 for 
BIIB059 450 mg versus placebo, p=0.037). Total active joint count is the total number of tender or swollen 

6

joints, with joint involvement being a common symptom in people with SLE. In addition, improvements in 
skin disease and overall disease activity were consistently observed across multiple secondary endpoints.

Neurocognitive Disorders

BIIB104 (AMPA) - CIAS

• 

In June 2019 the FDA granted BIIB104 fast track designation for CIAS.

Acute Neurology

BIIB093 (glibenclamide IV) - Brain Contusion

• 

In October 2019 we dosed the first patient in the Phase 2 study of BIIB093 for brain contusion.

Biosimilars

Samsung Bioepis - Biogen's Joint Venture with Samsung BioLogics

• 

• 

In June 2019 we presented real-world evidence confirming the safety and efficacy of BENEPALI, IMRALDI 
and FLIXABI and the high adherence of patients to treatment. The data were presented at EULAR 2019 in 
Madrid, Spain.

In October 2019 we presented new data highlighting real-world evidence confirming the safety and efficacy 
of IMRALDI and FLIXABI for patients with inflammatory bowel disease. These data were presented at the 
United European Gastroenterology Week 2019 in Barcelona, Spain.

Genentech Relationship

Anti-CD20 Therapies

GAZYVA (obinutuzumab)

• 

In June 2019 Roche announced positive topline results for NOBILITY, a Phase 2 study investigating the 
safety and efficacy of GAZYVA for adults with proliferative lupus nephritis. The study met its primary 
endpoint, showing GAZYVA, in combination with standard of care (mycophenolate mofetil or mycophenolic 
acid and corticosteroids), demonstrated enhanced efficacy compared to placebo plus standard of care 
alone in achieving complete renal response at one year. In addition, GAZYVA met key secondary endpoints 
showing improved overall renal responses (complete and partial renal response) and serologic markers of 
disease activity as compared to placebo.

• 

In September 2019 Roche announced that the FDA granted breakthrough therapy designation to GAZYVA 
for adults with lupus nephritis. This designation was granted based on data from the Phase 2 NOBILITY 
study in adult patients with proliferative lupus nephritis, as discussed above.

Discontinued Programs

• 

• 

• 

In August 2019 we discontinued the Phase 2b study of BG00011 (STX-100) for the potential treatment of 
idiopathic pulmonary fibrosis (IPF) due to safety concerns.

In September 2019 we and our collaboration partner Eisai announced the decision to discontinue the 
global Phase 3 studies (MISSION AD1 and MISSION AD2) of the investigational oral BACE (beta amyloid 
cleaving enzyme) inhibitor elenbecestat (development code: E2609) in patients with early AD.

In December 2019 we announced that the Phase 2 PASSPORT study investigating gosuranemab in 
individuals with progressive supranuclear palsy (PSP) did not meet its primary endpoint. Based on these 
results, we discontinued development of gosuranemab in PSP and other primary tauopathies. Safety results 
of the Phase 2 PASSPORT study were generally consistent with previous studies of gosuranemab. We will 
continue our ongoing Phase 2 TANGO study of gosuranemab for mild cognitive impairment due to AD or 
mild AD, given differences in disease pathology.

7

Marketed Products

The following graph shows our revenues by product and revenues from anti-CD20 therapeutic programs for the 

years ended December 31, 2019, 2018 and 2017.

(1)  Interferon includes product revenues from AVONEX and PLEGRIDY.

(2)  For 2019, 2018 and 2017 other includes product revenues from FAMPYRA, FUMADERM, BENEPALI and FLIXABI. For 2019 
and 2018 other also includes product revenues from IMRALDI, which was launched in Europe in October 2018. For 2019 
other also includes product revenues from VUMERITY, which was available in the U.S. in November 2019. For 2018 and 
2017 other also includes product revenues from ZINBRYTA, which was voluntary withdrawn from the market in March 2018. 
For 2017 other also includes product revenues from ALPROLIX and ELOCTATE through January 31, 2017. No product 
revenues for ALPROLIX and ELOCTATE were recognized subsequent to February 1, 2017, the effective date of the spin-off of 
our hemophilia business.

(3)  Anti-CD20 therapeutic programs include revenues from RITUXAN, RITUXAN HYCELA, GAZYVA and OCREVUS.

Product sales for TECFIDERA, AVONEX and TYSABRI as well as our share of pre-tax profits in the U.S. for 
RITUXAN each accounted for more than 10% of our total revenues for the years ended December 31, 2019, 2018 
and 2017. Product sales for SPINRAZA also accounted for more than 10% of our total revenues for the years ended 
December 31, 2019 and 2018. For additional financial information about our product and other revenues and 
geographic areas where we operate, please read Note 4, Revenues, and Note 24, Segment Information, to our 
consolidated financial statements included in this report and Item 6. Selected Financial Data and Item 7. 
Management's Discussion and Analysis of Financial Condition and Results of Operations included in this report. A 
discussion of the risks attendant to our operations is set forth in Item 1A. Risk Factors included in this report. 

8

Multiple Sclerosis and Neuroimmunology

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

Our MS products and major markets are as follows:

Product

Indication

Collaborator

Major Markets

RMS in the U.S.
RRMS in the E.U.

None

RMS

None

RMS in the U.S.
RRMS in the E.U.

RMS
RRMS in the E.U.
Crohn's disease in the U.S.

None

None

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

U.S.
France
Germany
Italy
Japan
Spain

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

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

RMS in the U.S.

Alkermes Pharma Ireland
Limited, a subsidiary of
Alkermes plc (Alkermes)

U.S.

Walking ability for patients with MS

Acorda Therapeutics,
Inc. (Acorda)

France
Germany

Neuromuscular Disorders

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

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

9

Our SMA product and major markets are as follows: 

Product

Indication

Collaborator

Major Markets

SMA

Ionis

U.S.
Brazil
Canada
France
Germany
Italy
Japan
Spain
Turkey

For additional information on our collaboration arrangements with Ionis, please read Note 18, Collaborative and 

Other Relationships, to our consolidated financial statements included in this report.

Biosimilars

Biosimilars are a group of biologic medicines that are similar to currently available biologic therapies known as 

originators. Under our agreement with Samsung Bioepis, we commercialize three anti-tumor necrosis factor (TNF) 
biosimilars in certain countries in Europe: BENEPALI, an etanercept biosimilar referencing ENBREL, IMRALDI, an 
adalimumab biosimilar referencing HUMIRA, and FLIXABI, an infliximab biosimilar referencing REMICADE. Additionally, 
we have exclusive rights to commercialize BENEPALI, IMRALDI and FLIXABI in China and two potential ophthalmology 
biosimilar products, SB11 referencing LUCENTIS and SB15 referencing EYLEA, in major markets worldwide, including 
the U.S., Canada, Europe, Japan and Australia.

Our current biosimilar products and major markets are as follows: 

Product

Indication

Rheumatoid arthritis
Juvenile idiopathic arthritis
Psoriatic arthritis
Axial spondyloarthritis
Plaque psoriasis
Paediatric plaque psoriasis

Rheumatoid arthritis
Juvenile idiopathic arthritis
Axial spondyloarthritis
Psoriatic arthritis
Psoriasis
Paediatric plaque psoriasis
Hidradenitis suppurativa 
Adolescent hidradenitis suppurativa
Crohn’s disease
Paediatric Crohn's disease
Ulcerative colitis
Uveitis
Paediatric Uveitis

Rheumatoid arthritis
Crohn’s disease
Paediatric Crohn’s disease
Ulcerative colitis
Paediatric ulcerative colitis
Ankylosing spondylitis
Psoriatic arthritis
Psoriasis

Major Markets

France
Germany
Italy
Spain
U.K.

France
Germany
U.K.

France
Germany
Italy

For additional information on our collaboration arrangements with Samsung Bioepis, please read Note 18, 

Collaborative and Other Relationships, to our consolidated financial statements included in this report.

10

 
Genentech Relationships

We have agreements with Genentech that entitle us to certain business and financial rights with respect to 

RITUXAN, RITUXAN HYCELA, GAZYVA, OCREVUS and other potential anti-CD20 therapies. 

Our current anti-CD20 therapeutic programs and major markets are as follows:

Product

Indication

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

Non-Hodgkin's lymphoma
CLL

In combination with chlorambucil for previously untreated CLL
Follicular lymphoma

In combination with chemotherapy followed by GAZYVA alone 
for previously untreated follicular lymphoma

RMS
PPMS

Major Markets

U.S.
Canada

U.S.

U.S.

U.S.
Australia
Germany
Switzerland

For additional information on our collaboration arrangements with Genentech, please read Note 1, Summary of 

Significant Accounting Policies, and Note 18, Collaborative and Other Relationships, to our consolidated financial 
statements included in this report.

Other

Product

Indication

Collaborator

Major Markets

Moderate to severe plaque
psoriasis

None

Germany

11

Patient Support and Access 

Distribution Arrangements

We interact with patients, advocacy 

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

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

Marketing and Distribution

Sales Force and Marketing

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

We and Eisai co-promote AVONEX, TYSABRI and 

TECFIDERA in Japan in certain settings.

RITUXAN, RITUXAN HYCELA, GAZYVA and 
OCREVUS are marketed by the Roche Group and its 
sublicensees.

We commercialize BENEPALI, IMRALDI and 
FLIXABI in collaboration with Samsung Bioepis in 
certain countries in Europe.

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

We distribute our products in the U.S. principally 

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

Eisai distributes AVONEX, TYSABRI, TECFIDERA 

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

RITUXAN, RITUXAN HYCELA, GAZYVA and 
OCREVUS are distributed by the Roche Group and its 
sublicensees.

We distribute BENEPALI, IMRALDI and FLIXABI in 
certain countries in Europe and have exclusive rights 
to distribute these products in China.

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, 2019, 2018 and 2017, and on 
a combined basis, accounted for approximately 47%, 
50% and 56% of our gross product revenues for the 
years ended December 31, 2019, 2018 and 2017, 
respectively. For additional information, please read 
Note 4, Revenues, to our consolidated financial 
statements included in this report.

Patents and Other Proprietary Rights

Patents are important to obtaining and 

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

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

are generally effective for 20 years from the date the 
earliest application was filed; however, U.S. patents 
that issue on applications filed before June 8, 
1995, may be effective until 17 years from the issue 
date, if that is later than the 20-year date. In some 
cases, the patent term may be extended to recapture 
a portion of the term lost during regulatory review of 
the claimed therapeutic or, in the case of the U.S., 
because of U.S. Patent and Trademark Office (USPTO) 
delays in prosecuting the application. Specifically, in 
the U.S., under the Drug Price Competition and Patent 
Term Restoration Act of 1984, commonly known as 
the Hatch-Waxman Act, a patent that covers a drug 
approved by the FDA may be eligible for patent term 
extension (for up to 5 years, but not beyond a total of 

12

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 such 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 such 
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.

13

Product
TECFIDERA

AVONEX and
PLEGRIDY
PLEGRIDY

Territory
U.S.
U.S.
Europe

Europe
U.S.

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

Europe

Patent No.
7,619,001
8,399,514
1131065

2137537
7,588,755

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

1476181

TYSABRI

U.S.

6,602,503

FAMPYRA

VUMERITY

SPINRAZA

U.S.
U.S.
Europe

Europe
Europe
Europe

Europe

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

U.S.
U.S.

U.S.

U.S.

U.S.

U.S.

U.S.

U.S.

U.S.

Europe

Europe

Europe

Europe

7,807,167
9,493,567
0804237

1485127
2676967
1732548

2377536

8,669,281
9,090,558
10,080,733

7,101,993
7,838,657

8,110,560

8,361,977

8,980,853

9,717,750

9,926,559

10,266,822

10,436,802

1910395

2548560

3305302

3308788

Footnotes follow on next page.

General Subject Matter
Methods of treatment
Methods of treatment
Formulations of dialkyl fumarates and their use for
treating autoimmune diseases
Methods of use
Use of recombinant beta interferon for
immunomodulation
Polymer conjugates of interferon beta-1a
Methods of treatment
Polymer conjugates of interferon beta-1a
Polymer conjugates of interferon-beta-1a and uses
thereof
Polymer conjugates of interferon-beta-1a and uses
thereof
Humanized recombinant antibodies; nucleic acids and
host cells; processes for production; therapeutic
compositions; methods of use
Methods of treatment
Methods of treatment
Humanized immunoglobulins; nucleic acids;
pharmaceutical compositions; medical uses
Methods of use
Methods of use
Sustained-release aminopyridine compositions for
increasing walking speed in patients with MS
Sustained-release aminopyridine compositions for
treating MS
Compounds and pharmaceutical compositions
Methods of treatment
Crystalline forms, pharmaceutical compositions and
methods of treatment
Oligonucleotides containing 2’-O-modified purines
SMA treatment via targeting of SMN2 splice site
inhibitory sequences
SMA treatment via targeting of SMN2 splice site
inhibitory sequences
Compositions and methods for modulation of SMN2
splicing
Compositions and methods for modulation of SMN2
splicing
Compositions and methods for modulation of SMN2
splicing
Compositions and methods for modulation of SMN2
splicing
SMA treatment via targeting of SMN2 splice site
inhibitory sequences
Methods for Treating Spinal Muscular Atrophy

Compositions and methods for modulation of SMN2
splicing
Compositions and methods for modulation of SMN2
splicing
Compositions and methods for modulation of SMN2
splicing
Compositions and methods for modulation of SMN2
splicing

14

Patent 
Expiration(1)
2020
2028(2)
2024(3)

2028(4)
2026

2022
2023
2027
2024(5)

2023(6)

2020

2023
2027
2020(7)

2023
2027
2025(8)

2025(9)

2033
2033
2033

2023
2027

2025

2030

2030

2030

2034

2025

2035

2026(10)

2026(11)

2030

2026

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

until the dates set forth below:

Product
TECFIDERA
PLEGRIDY

FAMPYRA
SPINRAZA

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

Expected Expiration
2024
2026
2024
2021
2023
2029

(2)  For additional information, please read Note 20, Litigation, to our consolidated financial statements included in this 

report.

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

to 2024. 

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

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

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

to 2024.

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

to 2028.

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

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

to 2026.

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

to 2026.

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

to 2031.

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

to 2031.

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 products, compounds 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, administrative challenges or other similar types of proceedings are, have been and may in the 
future be necessary in some instances to determine the validity and scope of certain of our 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 
also face challenges to our patents, regulatory exclusivities or other proprietary rights covering our products by 
manufacturers of generics, biosimilars, prodrugs and products approved under abbreviated regulatory pathways. A 
discussion of certain risks and uncertainties that may affect our patent position, regulatory exclusivities or other 
proprietary rights is set forth in Item 1A. Risk Factors included in this report, and a discussion of legal proceedings 
related to certain patents described above is set forth in Note 20, Litigation, to our consolidated financial 
statements included in this report.

15

Competition

Competition in the biopharmaceutical industry is 

intense and comes from many sources, including 
biotechnology and pharmaceutical companies. Many 
of our competitors, certain of whom have substantially 
greater financial, marketing, research and 
development and other resources than we do, are 
working to develop or have commercialized products 
similar to or competitive with those we market or are 
developing and have considerable experience in 
undertaking clinical trials and in obtaining regulatory 
approval to market pharmaceutical products. In 
addition, the commercialization of certain of our own 
approved products, products of our collaborators and 
pipeline product candidates may negatively impact 
future sales of our existing products.

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

Competition among products approved for sale 

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

The introduction of new products or 
technologies, including the development of new 
processes or technologies by competitors or new 
information about existing products or technologies, 
results in increased competition for our marketed 
products and pricing pressure on our marketed 
products. The development of new or improved 
treatment options or standards of care or cures for 
the diseases our products treat reduces and could 
eliminate the use of our products or may limit the 
utility and application of ongoing clinical trials for our 
product candidates. 

We also face increased competitive pressures 
from the introduction of generic versions, prodrugs 
and biosimilars of existing products as well as 
products approved under abbreviated regulatory 
pathways. Such products are likely to be sold at 
substantially lower prices than branded products, 
which may significantly reduce both the price that we 
are able to charge for our products and the volume of 
products we sell. In addition, when a generic version 
of one of our products is commercialized, it may, in 
some cases, be automatically substituted for our 
product and reduce our revenues in a short period of 
time. 

Additional information about the competition that 

our marketed products face is set forth below.

Multiple Sclerosis

TECFIDERA, AVONEX, PLEGRIDY, TYSABRI and 

VUMERITY each compete with one or more of the 
following products as well as generic and biosimilar 
versions of such products: 

Competing Product
AUBAGIO (teriflunomide)
BETASERON/BETAFERON
(interferon-beta-1b)
COPAXONE 
(glatiramer acetate)
EXTAVIA 
(interferon-beta-1b)
GILENYA (fingolimod)
GLATOPA (glatiramer
acetate)
LEMTRADA
(alemtuzumab)
MAVENCLAD (cladribine)
MAYZENT (siponimod)
OCREVUS (ocrelizumab)
REBIF 
(interferon-beta-1)

Competitor
Sanofi Genzyme
Bayer Group

Teva Pharmaceuticals
Industries Ltd.
Novartis AG

Novartis AG
Sandoz, a division of
Novartis AG
Sanofi Genzyme

EMD Serono
Novartis AG
Genentech
EMD Serono

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

Competition in the MS market is intense. Along 

with us, a number of companies are working to 
develop additional treatments for MS that may in the 
future compete with our MS products. One such 
product that was approved in the U.S. in 2017 and in 
the E.U. in 2018 is OCREVUS, a treatment for RMS 
and PPMS that was developed by Genentech. While 
we have a financial interest in OCREVUS, future sales 
of our MS products may be adversely affected if 

16

OCREVUS continues to gain market share, or if other 
MS products that we or our competitors are 
developing are commercialized. Future sales may also 
be negatively impacted by the introduction of generics, 
prodrugs of existing therapies, biosimilars of existing 
products or products approved under abbreviated 
regulatory pathways.

Spinal Muscular Atrophy

We face competition from a new gene therapy 
product that was approved in the U.S. in May 2019 
for the treatment of SMA. Additionally, we are aware of 
other products in development that, if successfully 
developed and approved, may compete with SPINRAZA 
in the SMA market, including potential oral products. 
Future sales of SPINRAZA may be adversely affected 
by the commercialization of competing products. 

Psoriasis

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

Biosimilars

BENEPALI, IMRALDI and FLIXABI, the three 

biosimilar products we currently commercialize in 
certain countries in Europe for Samsung Bioepis, 
compete with their reference products, ENBREL, 
HUMIRA and REMICADE, respectively, as well as other 
biosimilars of those reference products. 

Genentech Relationships in Other Indications

RITUXAN, RITUXAN HYCELA and GAZYVA in Oncology

RITUXAN, RITUXAN HYCELA 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 RITUXAN HYCELA 
and GAZYVA will increasingly compete with RITUXAN in 
the oncology market. In addition, we are aware of anti-
CD20 molecules, including biosimilar products, in 
development that if successfully developed and 
approved, could compete with RITUXAN, RITUXAN 
HYCELA and GAZYVA in the oncology market. The 
introduction of a biosimilar product can result in a 
significant reduction in net sales for the relevant 
product, as other manufacturers typically offer their 
versions at lower prices. In November 2019 and 
January 2020 biosimilar products referencing 

RITUXAN were launched in the U.S. and this could 
adversely affect the pre-tax profits of our collaboration 
arrangements with Genentech, which could, in turn 
adversely affect our co-promotion profits in the U.S. in 
future years.

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 approved, may 
compete with RITUXAN in the rheumatoid arthritis 
market. 

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 targeted research and development 
opportunities where there is a significant unmet need 
and where a drug candidate has the potential to be 
highly differentiated. 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.

For additional information on our research and 
development expense included in our consolidated 
statements of income, please read Item 7. 
Management's Discussion and Analysis of Financial 
Condition and Results of Operations included in this 
report.

17

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

Opicinumab (anti-LINGO) - MS

Phase 2

MS and Neuroimmunology

BIIB061 (oral remyelination) - MS

BIIB091 (BTK inhibitor) - MS

Aducanumab (A  mAb)* - Alzheimer's

BAN2401 (A  mAb)* - Alzheimer's

Phase 1

Phase 1

Phase 3

Phase 3

Alzheimer's Disease and Dementia

BIIB092 (gosuranemab) - Alzheimer's

Phase 2

Core
Growth
Areas

Neuromuscular Disorders, 
including SMA and ALS

BIIB076 (anti-tau mAb) - Alzheimer's

BIIB080 (tau ASO) - Alzheimer's

BIIB067 (tofersen) - ALS

BIIB078 (IONIS-C9Rx)# - ALS

BIIB110 (ActRIIA/B ligand trap) - SMA

BIIB100 (XP01 inhibitor) - ALS

Phase 3

Phase 1

Phase 1

Phase 1

Phase 1

Phase 1

Movement Disorders, 
including Parkinson's Disease

BIIB054 (cinpanemab) - Parkinson's

Phase 2

BIIB094 (ION859)# - Parkinson's

Phase 1

Ophthalmology

Immunology / Other

BIIB111 (timrepigene emparvovec) - CHM

Phase 3

BIIB112 (RPGR gene therapy) - XLRP

Phase 2/3

Dapirolizumab pegol (anti-CD40L)* - SLE

BIIB059 (anti-BDCA2) - CLE/SLE

Phase 2

Phase 2

Phase 2

Neurocognitive Disorders

BIIB104 (AMPA) - CIAS

BIIB093 (glibenclamide IV) - LHI^ Stroke

Phase 3

Emerging
Growth
Areas

Acute Neurology

TMS-007# - Acute Ischemic Stroke

Natalizumab - Epilepsy

BIIB093 (glibenclamide IV) - Brain Contusion

BIIB074 (vixotrigine) - Trigeminal Neuralgia

Pain

BIIB074 (vixotrigine) - Small Fiber Neuropathy

Phase 2

Phase 2

Phase 2

Phase 2

Phase 2

Biosimilars

SB11 (referencing LUCENTIS)

Phase 3

BIIB095 (Nav 1.7) - Neuropathic Pain

Phase 1

* Collaboration program
# Option agreement
^ Large Hemispheric Infarction (LHI)

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

subsection entitled Business Relationships below and Note 2, Acquisitions, Note 18, Collaborative and Other 
Relationships, and Note 19, Investments in Variable Interest Entities, to our consolidated financial statements 
included in this report.

18

Business Relationships

As part of our business strategy, we establish 

business relationships, including entering into 
licenses, 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 
additional information on certain of these 
relationships, including their ongoing financial and 
accounting impact on our business, please read Note 
2, Acquisitions, Note 18, Collaborative and Other 
Relationships, and Note 19, Investments in Variable 
Interest Entities, to our consolidated financial 
statements included in this report.

Acorda Therapeutics, Inc.

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

Alkermes

We have an exclusive license and collaboration 

agreement with Alkermes for VUMERITY, which was 
approved for the treatment of RMS in the U.S. in 
October 2019 and became available in the U.S. in 
November 2019. Under this agreement, we received 
an exclusive, worldwide license to develop and 
commercialize VUMERITY. 

Bristol-Myers Squibb Company

We have an exclusive license agreement with 

Bristol-Myers Squibb Company (BMS) for the 
development and potential commercialization of 
BIIB092 (gosuranemab), a phase 2 investigational 
therapy with potential in AD. Under this agreement, we 
received worldwide rights to gosuranemab and are 
responsible for the full development and potential 
commercialization of gosuranemab in AD. 

Eisai Co., Ltd.

We have a collaboration agreement with Eisai to 
jointly develop and commercialize BAN2401, an Eisai 
product candidate for the potential treatment of AD. 
Eisai serves as the global operational and regulatory 

19

lead for BAN2401 and all costs, including research, 
development, sales and marketing expenses, are 
shared equally between us and Eisai. Upon marketing 
approval, we and Eisai will co-promote BAN2401 and 
share profits equally. 

We also have a collaboration agreement with 

Eisai to jointly develop and commercialize 
aducanumab (the Aducanumab Collaboration 
Agreement). Under the Aducanumab Collaboration 
Agreement, the two companies will co-promote 
aducanumab with a region-based profit split and we 
lead the ongoing development of aducanumab. 

We and Eisai co-promote AVONEX, TYSABRI and 

TECFIDERA in Japan in certain settings and Eisai 
distributes AVONEX, TYSABRI, TECFIDERA and 
PLEGRIDY in India and other Asia-Pacific markets, 
excluding China.

Genentech, Inc. (Roche Group)

We have collaboration arrangements with 
Genentech which entitle us to certain business and 
financial rights with respect to RITUXAN, RITUXAN 
HYCELA, GAZYVA, OCREVUS and other potential anti-
CD20 therapies. 

Ionis Pharmaceuticals, Inc.

We have an exclusive, worldwide option and 
collaboration agreement with Ionis relating to the 
development and commercialization of antisense 
therapeutics for up to three gene targets. Under a 
separate collaboration and license agreement with 
Ionis, we have an exclusive, worldwide license to 
develop and commercialize SPINRAZA for the 
treatment of SMA. We also have a 10-year exclusive 
collaboration agreement with Ionis to develop novel 
ASO drug candidates for a broad range of neurological 
diseases, which we refer to as the 2018 Ionis 
Agreement.

In addition, we have research collaboration 
agreements with Ionis under which both companies 
perform discovery level research and will develop and 
commercialize new ASO drug candidates for the 
potential treatment of SMA and additional antisense 
or other therapeutics for the potential treatment of 
neurological diseases.

Neurimmune SubOne AG

We have a collaboration and license agreement 
with Neurimmune SubOne AG (Neurimmune) for the 
development and commercialization of antibodies for 
the potential treatment of AD, including aducanumab 
(as amended, the Neurimmune Agreement). We are 
responsible for the development, manufacturing and 
commercialization of all licensed products.

Samsung Bioepis Co., Ltd.

We and Samsung BioLogics established a joint 
venture, Samsung Bioepis, to develop, manufacture 
and market biosimilar products. We also have an 
agreement with Samsung Bioepis to commercialize, 
over a 10-year term, 3 anti-TNF biosimilar product 
candidates in Europe and, in the case of BENEPALI, 
Japan. Under this agreement, we are commercializing 
BENEPALI, an etanercept biosimilar referencing 
ENBREL, IMRALDI, an adalimumab biosimilar 
referencing HUMIRA, and FLIXABI, an infliximab 
biosimilar referencing REMICADE, in certain countries 
in Europe. 

In December 2019 we completed a transaction 

with Samsung Bioepis and secured the exclusive 
rights to commercialize two potential ophthalmology 
biosimilar products, SB11 referencing LUCENTIS and 
SB15 referencing EYLEA, in major markets worldwide, 
including the U.S., Canada, Europe, Japan and 
Australia. We also acquired an option to extend our 
existing commercial agreement with Samsung Bioepis 
for BENEPALI, IMRALDI and FLIXABI in Europe and 
obtained exclusive rights to commercialize these 
products in China.

In addition to our joint venture and 

commercialization agreements with Samsung Bioepis, 
we license certain of our proprietary technology to 
Samsung Bioepis in connection with Samsung 
Bioepis' development, manufacture and 
commercialization of its biosimilar products. We also 
provide technical development and technology 
transfer services to Samsung Bioepis.

Skyhawk Therapeutics, Inc.

We have a collaboration and research and 
development services agreement with Skyhawk 
pursuant to which the companies are leveraging 
Skyhawk’s SkySTAR technology platform with the goal 
of discovering innovative small molecule treatments 
for patients with neurological diseases, including MS 
and SMA. We are responsible for the development 
and potential commercialization of any therapies 
resulting from this collaboration.

TMS Co., Ltd.

We have an exclusive option agreement with TMS 

Co., Ltd. (TMS) granting us the option to acquire 
TMS-007, a plasminogen activator with a novel 
mechanism of action associated with breaking down 
blood clots which is in Phase 2 development in Japan, 
and backup compounds for the treatment of stroke.

Regulatory

Our current and contemplated activities and the 

products, technologies and processes that result from 

20

such activities are subject to substantial government 
regulation.

Regulation of Pharmaceuticals

Product Approval and Post-Approval Regulation in 

the U.S.

APPROVAL PROCESS

Before new pharmaceutical products may be 
sold in the U.S., preclinical studies and clinical trials 
of the products must be conducted and the results 
submitted to the FDA for approval. With limited 
exceptions, the FDA requires companies to register 
both pre-approval and post-approval clinical trials and 
disclose clinical trial results in public databases. 
Failure to register a trial or disclose study results 
within the required time periods could result in 
penalties, including civil monetary penalties. Clinical 
trial programs must establish efficacy, determine an 
appropriate dose and dosing regimen and define the 
conditions for safe use. This is a high-risk process 
that requires stepwise clinical studies in which the 
candidate product must successfully meet 
predetermined endpoints. The results of the 
preclinical and clinical testing of a product are then 
submitted to the FDA in the form of a Biologics 
License Application (BLA) or a 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 suitable 
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 
delays or expenses. 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 and/or clinical data. 

The FDA has developed four distinct approaches 

intended to facilitate the development and expedite 
the regulatory review of therapeutically important 
drugs, 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” 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 provide 
the FDA with confirmatory data post-approval to 
verify and describe clinical benefit. Under the 
FDA's accelerated approval regulations, if the 
FDA concludes that a drug that has been shown 
to be effective can be safely used only if 
distribution or use is restricted, it may require 
certain post-marketing restrictions to assure 
safe use. In addition, for products approved 
under accelerated approval, sponsors may be 
required to submit all copies of their promotional 
materials, including advertisements, to the FDA 
at least 30 days prior to initial dissemination. 
The FDA may withdraw approval if, for instance, 
post-marketing studies fail to verify clinical 
benefit, it becomes clear that restrictions on the 
distribution of the product are inadequate to 
ensure its safe use or if a sponsor fails to 
comply with the conditions of the accelerated 
approval.

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

•  Breakthrough Therapy: The FDA may grant 

“breakthrough therapy” status to drugs designed 
to treat, alone or in combination with another 
drug or drugs, a serious or life-threatening 
disease or condition and for which preliminary 
clinical evidence suggests a substantial 
improvement over existing therapies based on a 
clinically significant endpoint. 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 eligible for priority review 
and does not ensure FDA approval.

•  Priority Review: “Priority review” only applies to 

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

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

POST-MARKETING STUDIES

Regardless of the approval pathway employed, 
the FDA may require a sponsor to conduct additional 
post-marketing studies as a condition of approval to 
provide data on safety and effectiveness. If a sponsor 
fails to conduct the required studies, the FDA 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 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 

21

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 what was initially 
approved. FDA regulatory review may result in denial 
or modification of the planned changes, or 
requirements to conduct additional tests or 
evaluations that can substantially delay or increase 
the cost of the planned changes.

REGULATION OF PRODUCT ADVERTISING AND 

PROMOTION

The FDA regulates all advertising and promotion 
activities and communications for products under its 
jurisdiction both before and after approval. Pursuant 
to FDA guidance, a company can make safety and 
efficacy claims from data either in or consistent with 
the label. However, physicians may prescribe legally 
available drugs for uses that are not described in the 
drug's labeling. Such off-label prescribing is 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. 

In May 2017 new regulations governing medical 
devices (MDR) and in-vitro diagnostic medical devices 
(IVDR) entered into force in the E.U. although these 

22

are not expected to fully apply until May 2020 with 
respect to the MDR regulations and May 2022 with 
respect to the IVDR regulations. All products covered 
by these regulations will be required to comply with 
them at the end of the transitional periods. These 
regulations introduce new requirements, including for 
clinical investigation of certain classifications of 
medical devices, require increased regulatory scrutiny, 
enhance the requirements for post market 
surveillance and vigilance and provide for greater 
transparency. These regulations also change the 
requirements for assessment of the medical device 
components of integral drug-device combination 
products, necessitating assessment of the device 
components under both the medical device and 
medicinal product regulatory regimes.

Product Approval and Post-Approval Regulation 

Outside the U.S.

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

In addition to the centralized procedure, the 
European regulatory framework includes the following 
options for regulatory review and approval in E.U. 
member states: 

•  a national procedure, where the first application 
is made to the competent authority in one E.U. 
country only; 

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

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

an obligation to inform regulatory agencies of any new 
information which may influence the evaluation of 
benefits and risks of the medicinal product 
concerned. 

In the U.S., E.U. and other jurisdictions, 

regulatory agencies, including the FDA, conduct 
periodic inspections of NDA and BLA holders to 
assess their compliance with pharmacovigilance 
obligations.

As in the U.S., the E.U. also has distinct 

Good Manufacturing Practices

approaches intended to optimize the regulatory 
pathways for therapeutically important drugs, 
including the Priority Medicines Evaluation Scheme 
(PRIME), accelerated assessment and conditional 
marketing authorization. PRIME is intended to provide 
additional support to medicine developers throughout 
the development process. Regulatory review timelines 
in the E.U. may be truncated under accelerated 
assessment for products that address an unmet 
medical need. In addition, conditional marketing  
authorizations may be granted for such products in 
the interest of public health, where the benefit of 
immediate availability outweighs the risk of less 
comprehensive data than normally required. 
Conditional marketing authorizations are valid for one 
year and can be renewed annually. The marketing 
authorization holder is required to complete specific 
obligations (ongoing or new studies and, in some 
cases, additional activities) with a view to providing 
comprehensive data confirming that the benefit risk 
balance is positive. Once comprehensive data on the 
product have been obtained, the marketing 
authorization may be converted into a standard 
marketing authorization.

Aside from the U.S. and E.U., there are countries 

in other regions where 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.

In the E.U. there is detailed legislation on 
pharmacovigilance and extensive guidance on good 
pharmacovigilance practices. A failure to comply with 
E.U. pharmacovigilance obligations may result in 
significant financial penalties for the marketing 
authorization holder.

Regardless of the approval process employed, 

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

23

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

Good Clinical Practices

The FDA, the EMA and other regulatory agencies 
promulgate regulations and standards for designing, 
conducting, monitoring, auditing and reporting the 
results of clinical trials to ensure that the data and 
results are accurate and that the rights and welfare of 
trial participants are adequately protected (commonly 
referred to as current Good Clinical Practices (cGCP)). 
Regulatory agencies enforce cGCP through periodic 
inspections of trial sponsors, principal investigators 
and trial sites, contract research organizations (CROs) 
and institutional review boards. If our studies fail to 
comply with applicable cGCP guidelines, the clinical 
data generated in our clinical trials may be deemed 
unreliable and relevant regulatory agencies may 
require us to perform additional clinical trials before 
approving our marketing applications. Noncompliance 
can also result in civil or criminal sanctions. We rely 
on third parties, including CROs, to carry out many of 
our clinical trial-related activities. Failure of such third 
parties to comply with cGCP can likewise result in 
rejection of our clinical trial data or other sanctions.

In April 2014 the EC adopted a new Clinical Trial 

Regulation, which was effective in June 2014 but is 
not expected to apply until 2021. The regulation 
harmonizes the procedures for assessment and 
governance of clinical trials throughout the E.U. and 
will require that information on the authorization, 
conduct and results of each clinical trial conducted in 
the E.U. be publicly available.

Approval of Biosimilars 

The Patient Protection and Affordable Care Act 

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

A biosimilars approval pathway has been in place 

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

Orphan Drug Act

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 

24

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

Regulation Pertaining to Pricing and 

Reimbursement

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

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. The 
amount of the rebate is established by law and 
is adjusted upward if the average manufacturer 
price (AMP) increases more than inflation 

(measured by the Consumer Price Index - Urban). 
The rebate amount is calculated each quarter 
based on our report of current AMP and best 
price for each of our products to the Centers for 
Medicare & Medicaid Services (CMS). The 
requirements for calculating AMP and best price 
are complex. We are required to report any 
revisions to AMP or best price previously 
reported within a certain period, which revisions 
could affect our rebate liability for prior quarters. 
In addition, if we fail to provide information timely 
or we are found to have knowingly submitted 
false information to the government, the statute 
governing the Medicaid Drug Rebate Program 
provides for civil monetary penalties.

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

Medicare Part D provides coverage to enrolled 
Medicare patients for self-administered drugs 
(i.e., drugs that are not administered by a 
physician). Medicare Part D is administered by 
private prescription drug plans approved by the 
U.S. government. Each drug plan establishes its 
own Medicare Part D formulary for prescription 
drug coverage and pricing, which the drug plan 
may modify from time-to-time. The prescription 
drug plans negotiate pricing with manufacturers 
and pharmacies, and may condition formulary 
placement on the availability of manufacturer 
discounts. In addition, manufacturers, including 
us, are required to provide to the CMS a 
discount of up to 70% 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 

25

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

•  340B Discounted Pricing: To maintain coverage 

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

Outside the U.S.

Outside the U.S., our products are paid for by a 
variety of payors, with governments being the primary 
source of payment. Governments may determine or 
influence reimbursement of products and may also 
set prices or otherwise regulate pricing. Negotiating 
prices with governmental authorities can delay 
commercialization of our products. Governments may 
use a variety of cost-containment measures to control 
the cost of products, including price cuts, mandatory 
rebates, value-based pricing and reference pricing 
(i.e., referencing prices in other countries and using 

those reference prices to set a price). Budgetary 
pressures in many countries are continuing to cause 
governments to consider or implement various cost-
containment measures, such as price freezes, 
increased price cuts and rebates and expanded 
generic substitution and patient cost-sharing. 

Regulation Pertaining to Sales and Marketing

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

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 

26

disclosure of pharmaceutical pricing information and 
marketing expenditures. Many of these laws and 
regulations contain ambiguous requirements. Given 
the lack of clarity in laws and their implementation, 
our reporting actions could be subject to the penalty 
provisions of the pertinent federal and state laws and 
regulations. Outside the U.S., other countries have 
implemented requirements for disclosure of financial 
interactions with healthcare providers and additional 
countries may consider or implement such laws.

Other Regulations

Foreign Anti-Corruption

We are subject to various federal and foreign 

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

The laws to which we are subject also include 

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

NIH Guidelines

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

Other Laws

Our present and future business has been and 
will continue to be subject to various other laws and 

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

The European Parliament and the Council of the 

European Union adopted a comprehensive general 
data privacy regulation (GDPR) in 2016 to replace the 
current E.U. Data Protection Directive and related 
country-specific legislation. The GDPR took effect in 
May 2018 and governs the collection and use of 
personal data in the E.U. The GDPR, which is wide-
ranging in scope, imposes several requirements 
relating to the consent of the individuals to whom the 
personal data relates, the information provided to the 
individuals, the security and confidentiality of the 
personal data, data breach notification and the use of 
third-party processors in connection with the 
processing of the personal data. The GDPR also 
imposes strict rules on the transfer of personal data 
out of the E.U. to the U.S., provides an enforcement 
authority and imposes large penalties for 
noncompliance, including the potential for fines of up 
to €20.0 million or 4% of the annual global revenues 
of the infringer, whichever is greater.

Environmental Matters

We strive to comply in all material respects with 

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

Manufacturing

We are committed to ensuring an uninterrupted 
supply of medicines to patients around the world. To 
that end, we continually review our manufacturing 
capacity, capabilities, processes and facilities. We 
believe that our manufacturing facilities, together with 
the third-party contract manufacturing organizations 
we outsource to, currently provide sufficient capacity 

27

for our products and to Samsung Bioepis, our joint 
venture that develops, manufactures and markets 
biosimilar products, and other strategic contract 
manufacturing partners. In order to support our drug 
development pipeline, we are expanding our large 
molecule production capacity by building a large-scale 
biologics manufacturing facility in Solothurn, 
Switzerland. We expect this facility to be partially 
operational by the end of 2020.

Manufacturing Facilities

Our drug substance manufacturing facility 

includes:

Facility

RTP, NC

Drug Substance Manufactured

AVONEX
PLEGRIDY
TYSABRI
Other*

* Other includes products manufactured for contract 

manufacturing partners.

In addition to our drug substance manufacturing 
facility, we have a drug product manufacturing facility 
and supporting infrastructure in RTP, NC, including a 
parenteral facility and an oral solid dose products 
manufacturing facility. 

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

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

In order to support our drug development 
pipeline, we are building a large-scale biologics 
manufacturing facility in Solothurn, Switzerland, which 
we expect to be partially operational by the end of 
2020. 

Genentech is responsible for all worldwide 
manufacturing activities for bulk RITUXAN, RITUXAN 
HYCELA and GAZYVA and has sourced the 
manufacture of certain bulk RITUXAN, RITUXAN 
HYCELA and GAZYVA requirements to a third party. 
Acorda supplies FAMPYRA to us pursuant to its supply 
agreement with Alkermes, Inc. and Ionis supplies the 
active pharmaceutical ingredient (API) for SPINRAZA. 
Alkermes currently supplies VUMERITY to us pursuant 
to our supply agreement with Alkermes. In October 
2019 we entered into a new supply agreement and 
amended our license and collaboration agreement 
with Alkermes pursuant to which we have the election, 

following a transition period, to manufacture 
VUMERITY or have manufacturing transitioned to a 
third party.

Third-Party Suppliers and Manufacturers

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

We source all of our fill-finish and the majority of 
final product assembly and storage operations for our 
products, along with a substantial part of our label 
and packaging operations, to a concentrated group of 
third-party contract manufacturing organizations. 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.

28

Our Employees

As of December 31, 2019, we had approximately 7,400 employees worldwide.

Information about our Executive Officers (as of February 6, 2020)

Officer
Michel Vounatsos

Susan H. Alexander
Jeffrey D. Capello
Alphonse Galdes, Ph.D.

Ginger Gregory, Ph.D.
Chirfi Guindo

Current Position
Chief Executive Officer

Executive Vice President, Chief Legal Officer and Secretary
Executive Vice President and Chief Financial Officer
Executive Vice President, Pharmaceutical Operations and
Technology
Executive Vice President and Chief Human Resources Officer
Executive Vice President, Global Product Strategy and
Commercialization
Executive Vice President, Corporate Development
Vice President, Chief Accounting Officer

Year
Joined
Biogen
2016

2006
2017
1995

2017
2017

2018
2018
1998

Age
58

63
55
67

52
54

42
54
62

Daniel Karp
Robin C. Kramer
Alfred W. Sandrock, Jr., M.D., Ph.D. Executive Vice President, Research and Development

Michel Vounatsos
Experience
Mr. Vounatsos has served as our Chief Executive Officer and as a member of our Board of Directors since January
2017. Prior to that, from April 2016 to December 2016, Mr. Vounatsos served as our Executive Vice President,
Chief Commercial Officer. Prior to joining Biogen, Mr. Vounatsos spent 20 years at Merck & Co., Inc. (Merck), a
pharmaceutical company, where he most recently served as President, Primary Care, Customer Business Line and
Merck Customer Centricity. In this role, he led Merck’s global primary care business unit, a role which
encompassed Merck’s cardiology-metabolic, general medicine, women’s health and biosimilars groups and
developed and instituted a strategic framework for enhancing the company’s relationships with key constituents,
including the most significant providers, payors and retailers and the world’s largest governments. Mr. Vounatsos
previously held leadership positions across Europe and in China for Merck. Prior to that, Mr. Vounatsos held
management positions at Ciba-Geigy, a pharmaceutical company. Mr. Vounatsos currently serves on the advisory
board of Tsinghua University School of Pharmaceutical Sciences, on the Supervisory Board of Liryc, the
Electrophysiology and Heart Modeling Institute at the University of Bordeaux, on the board of directors of N-Lorem
Foundation and as a member of the MIT Presidential CEO Advisory Board.
Education

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

Susan H. Alexander
Experience
Ms. Alexander has served as our Executive Vice President, Chief Legal Officer and Secretary since April 2018. Prior
to that, Ms. Alexander served as our Executive Vice President, Chief Legal, Corporate Services and Secretary from
March 2017 to March 2018, as our Executive Vice President, Chief Legal Officer and Secretary from December
2011 to March 2017 and as our Executive Vice President, General Counsel and Corporate Secretary from 2006 to
December 2011. Prior to joining Biogen, Ms. Alexander served as the Senior Vice President, General Counsel and
Corporate Secretary of PAREXEL International Corporation, a biopharmaceutical services company, from 2003 to
January 2006. From 2001 to 2003 Ms. Alexander served as General Counsel of IONA Technologies, a software
company. From 1995 to 2001 Ms. Alexander served as Counsel at Cabot Corporation, a specialty chemicals and
performance materials company. Prior to that, Ms. Alexander was a partner at the law firms of Hinckley, Allen &
Snyder and Fine & Ambrogne.
Public Company Boards

Invacare Corporation, a medical and healthcare product company

Education

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

29

Jeffrey D. Capello
Experience
Mr. Capello has served as our Executive Vice President and Chief Financial Officer since December 2017 and
served as our Chief Accounting Officer from July 2018 to November 2018. Prior to joining Biogen, Mr. Capello
served as the Chief Financial Officer of Beacon Health Options, Inc., a behavioral health company, with
responsibility for finance, human resources, information technology, real estate and procurement from October
2016 until November 2017. From July 2015 until September 2016 Mr. Capello was the founder and Chief
Executive Officer of Monomoy Advisors, which focuses on helping companies drive shareholder value. From July
2014 until June 2015 Mr. Capello served as the Executive Vice President and Chief Financial Officer of Ortho-
Clinical Diagnostics, an in-vitro diagnostics company that was acquired by the Carlyle Group from Johnson &
Johnson, with responsibility for global finance and business development. From March 2010 to December 2013 Mr.
Capello served as Chief Financial Officer and Executive Vice President of Boston Scientific Corporation (Boston
Scientific), a medical device company, where he was responsible for the worldwide management of Boston
Scientific’s finance, information systems, business development and corporate strategy functions. Mr. Capello
joined Boston Scientific in June 2008 and served as Senior Vice President and Chief Accounting Officer until March
2010. From 2006 to 2008 he was the Senior Vice President and Chief Financial Officer with responsibilities for
global finance and business development at PerkinElmer, Inc. (PerkinElmer), a life sciences tool company.
Previously, he served as PerkinElmer’s Vice President of Finance, Corporate Controller, Treasurer and Chief
Accounting Officer from 2001 to 2006. Prior to his tenure at PerkinElmer, Mr. Capello was a Partner at
PricewaterhouseCoopers LLP, both in the U.S. and in the Netherlands.
Education

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

Alphonse Galdes, Ph.D.
Experience
Dr. Galdes has served as our Executive Vice President, Pharmaceutical Operations and Technology since
September 2019. Since joining Biogen in 1995, Dr. Galdes has held several senior executive positions, including
most recently as Senior Vice President, Asset Development and Portfolio Management from November 2015 to
September 2019 and Senior Vice President, Technical Development from October 2010 to November 2015. Dr.
Galdes was a Rhodes Scholar at Oxford University and performed post-doctoral research work at the Department of
Biological Chemistry at Harvard Medical School.
Education

University of Malta, B.Sc. Chemistry and Biology
University of Malta, M.Sc. Biochemistry
Oxford University, Ph.D. Biochemistry

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

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

30

Chirfi Guindo
Experience
Mr. Guindo has served as our Executive Vice President, Global Product Strategy and Commercialization since
February 2019. Prior to that, Mr. Guindo served as our Executive Vice President and Head of Global Marketing,
Market Access and Customer Innovation from November 2017 to February 2019. Prior to joining Biogen, Mr.
Guindo spent 27 years in the global pharmaceutical industry and has held several leadership positions at Merck, a
pharmaceutical company, in Canada, the U.S., France, Africa and the Netherlands. He worked in several disciplines
including Finance, Sales & Marketing, General Management and Global Strategy/Product Development in specialty,
acute and hospital care. Most recently Mr. Guindo was Vice President and Managing Director and President and
Managing Director of Merck Canada from October 2014 to November 2017. From January 2011 to October 2014,
he was Vice President and General Manager, Global HIV Franchise at Merck.
Education

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

Daniel Karp
Experience
Mr. Karp has served as our Executive Vice President, Corporate Development since June 2018. Prior to joining
Biogen, Mr. Karp held a number of positions of increasing responsibility at Pfizer, a biopharmaceutical company,
including as Vice President, Worldwide Business Development and Head of Business Development for Worldwide
Research and Development from May 2016 to June 2018, as Vice President, Worldwide Business Development
and BD Lead for Pfizer Vaccines, Oncology and Consumer Healthcare from January 2014 to May 2016, as Senior
Director, Worldwide Business Development from December 2010 to December 2013, as Director, Worldwide
Business Development from January 2008 to December 2010, as Senior Manager, Worldwide Business
Development from May 2007 to December 2007 and as Manager, U.S. Business Development from July 2006 to
April 2007. Prior to that, Mr. Karp held roles in healthcare and life sciences strategy consulting.
Education

Duke University, B.S. Biology
Wharton School of the University of Pennsylvania, M.B.A.

Robin C. Kramer
Experience
Ms. Kramer has served as our Vice President, Chief Accounting Officer since November 2018. Prior to joining
Biogen, Ms. Kramer served as the Senior Vice President and Chief Accounting Officer of Hertz Global Holdings,
Inc., a car rental company, from May 2014 to November 2018. Prior to that, Ms. Kramer was an audit partner at
Deloitte & Touche LLP (Deloitte), a professional services firm, from 2007 to 2014, including serving in Deloitte's
National Office Accounting Standards and Communications Group from 2007 to 2010. From 2005 to 2007 Ms.
Kramer served as Chief Accounting Officer of Fisher Scientific International, Inc., a laboratory supply and
biotechnology company, and from 2004 to 2005 Ms. Kramer served as Director, External Reporting, Accounting
and Control for the Gillette Company, a personal care company. Ms. Kramer also held partner positions in the
public accounting firms of Ernst & Young LLP and Arthur Anderson LLP. Ms. Kramer is a licensed certified public
accountant (CPA) in Massachusetts. She is a member of the Massachusetts Society of CPAs and the American
Institute of CPAs and served as a Board Member for the Massachusetts State Board of Accountancy from
September 2011 to December 2015.
Education

Salem State University, B.B.A. Accounting

31

Alfred W. Sandrock, Jr., M.D., Ph.D.
Experience
Dr. Sandrock has served as our Executive Vice President, Research and Development since September 2019. Prior
to that, Dr. Sandrock served as our Chief Medical Officer from October 2017 to January 2020, as our Executive
Vice President, Chief Medical Officer Neurology and Neurodegeneration from October 2015 to October 2017, as our
Chief Medical Officer and Group Senior Vice President from April 2013 to October 2015 and as our Chief Medical
Officer and Senior Vice President of Development Sciences from February 2012 to April 2013. Prior to that, Dr.
Sandrock held several other senior executive positions since joining Biogen in 1998, including Senior Vice
President of Neurology Research and Development and Vice President of Clinical Development, Neurology.
Public Company Boards

Neurocrine Biosciences, Inc., a life sciences company

Education

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

Available Information

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

32

Item  1A.  

Risk Factors

We are substantially dependent on revenues from our products. 

Our revenues depend upon continued sales of our products, as well as the financial rights we have in our anti-

CD20 therapeutic programs, and, unless we develop, acquire rights to and/or commercialize new products and 
technologies, we will be substantially dependent on sales from our products and our financial rights in our anti-CD20 
therapeutic programs for many years. Additionally, a significant portion of our revenues are concentrated on sales of 
our products in increasingly competitive markets. Any of the following negative developments relating to any of our  
products or any of our anti-CD20 therapeutic programs may adversely affect our revenues and results of operations 
or could cause a decline in our stock price: 

•  safety or efficacy issues; 

•  our ability to maintain a positive reputation among patients, healthcare providers and others, which may be 

impacted by our pricing and reimbursement decisions;

• 

• 

the introduction or greater acceptance of competing products, including generics, biosimilars, prodrugs and 
products approved under abbreviated regulatory pathways; 

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

•  adverse legal, administrative, regulatory or legislative developments.

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

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

• 

the introduction of a new gene therapy product that was approved in the U.S. in May 2019 for the 
treatment of SMA, and other products in development that, if successfully developed and approved, may 
compete with SPINRAZA in the SMA market, including potential oral products;

•  our limited marketing experience within certain SMA markets, which may impact our ability to develop 

additional relationships with the associated medical and scientific community; and

• 

the lack of readiness of healthcare providers within certain SMA markets to treat patients with SMA.

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

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

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

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

payors’ reimbursement policies; 

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

•  consolidation and increasing assertiveness of payors, including managed care organizations, health 

insurers, pharmacy benefit managers, government health administration authorities, private health insurers 
and other organizations, seeking price discounts or rebates in connection with the placement of our 

33

products on their formularies and, in some cases, the imposition of restrictions on access or coverage of 
particular drugs or pricing determined based on perceived value; and

•  our value-based contracting program pursuant to which we aim to tie the pricing of our products to their 

clinical values by either aligning price to patient outcomes or adjusting price for patients who discontinue 
therapy for any reason, including efficacy or tolerability concerns.

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

the price of our products. Certain countries set prices by reference to the prices in other countries where our 
products are marketed. Thus, our inability to obtain and maintain adequate prices in a particular country may not 
only limit the revenues from our products within that country but may also adversely affect our ability to secure 
acceptable prices in existing and potential new 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.

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

Payors, including managed care organizations, health insurers, pharmacy benefit managers, government health 

administration authorities, private health insurers and other organizations, increasingly seek ways to reduce their 
costs. Many payors continue to adopt benefit plan changes that shift a greater portion of prescription costs to 
patients. Such measures include more limited benefit plan designs, higher patient co-pay or co-insurance obligations 
and limitations on patients' use of commercial manufacturer co-pay payment assistance programs (including through 
co-pay accumulator adjustment or maximization programs). Payors also increasingly seek price discounts or rebates 
in connection with the placement of our products on their formularies or those they manage and control costs by 
imposing restrictions on access to or usage of our products, such as by requiring prior authorization or step therapy. 
Significant consolidation in the health insurance industry has resulted in a few large insurers and pharmacy benefit 
managers exerting greater pressure in pricing and usage negotiations with drug manufacturers, significantly 
increasing discounts and rebates required of manufacturers and limiting patient access and usage. Further 
consolidation among insurers, pharmacy benefit managers and other payors would increase the negotiating leverage 
such entities have over us and other drug manufacturers. Ultimately, additional discounts, rebates, coverage or plan 
changes, restrictions or exclusions as described above could have a material adverse effect on sales of our affected 
products.

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

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 
afforded to our products and processes in the U.S. and in other important markets remains uncertain and depends, 
in part, upon decisions of the patent offices, courts, administrative bodies and lawmakers in these countries. We 
may fail to successfully obtain or preserve patent protection for the technologies incorporated into our products and 
processes, or the protection we obtain may not be of sufficient breadth and degree to protect our commercial 
interests in all countries where we conduct business. Under the Hatch-Waxman Act, a manufacturer may file an 
Abbreviated New Drug Application, seeking approval of a generic copy of an approved innovator product, or a NDA 
under Section 505(b)(2) of the Federal Food, Drug and Cosmetic Act, which may be for a new or improved version of 
the original innovator product. The manufacturers are allowed to rely on the safety and efficacy data of the 
innovator's product, may not need to conduct clinical trials, can market a competing version of a product after the 
expiration or loss of patent exclusivity or the expiration or loss of regulatory exclusivity and often charge significantly 
lower prices. Upon the expiration or loss of patent protection or the expiration or loss of regulatory exclusivity for a 
product, a major portion of revenues for that product may be reduced in a short period of time. When others exploit 
our inventions, the expected benefit from them are reduced. Furthermore, our products may be determined to 

34

infringe patents or other intellectual property rights held by third parties, which could result in financial, legal, 
business or reputational harm to us.

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

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

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

proceedings are, have been and may in the future be necessary in some instances to determine the validity and 
scope of certain of our 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 also face challenges to our patent and regulatory protections 
covering our products by third parties, including manufacturers of generics and biosimilars that may choose to 
launch or attempt to launch their products before the expiration of our patent or regulatory exclusivity. Litigation, 
interference, oppositions, inter partes reviews, administrative challenges or other similar types of proceedings are 
unpredictable and are often protracted, expensive and distracting to management. Negative outcomes of such 
proceedings adversely affect the validity and scope of our patent or other proprietary rights. Settlements of Hatch-
Waxman litigation typically result in reducing the period of patent protection, accelerating reduction in revenue from 
affected products. Adverse outcomes in intellectual property litigation also could 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. Any of these 
circumstances could result in financial, business or reputational harm to us or could cause a decline or volatility in 
our stock price.

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 the successful development of additional indications for our 

existing products as well as the 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 uncertainty and risk. Only a small number 

of research and development programs result in the commercialization of a product. Furthermore, the development 
of novel approaches for the treatment of diseases, including development efforts in new modalities such as those 
based on the ASO platform and gene therapy, may present additional challenges and risks, including obtaining 
regulatory approval from the FDA and other regulatory agencies that have limited experience with the development of 
such therapies. In addition, clinical trial data are subject to differing interpretations and, even if we view data as 
sufficient to support the safety, effectiveness and/or approval of an investigational therapy, regulatory authorities 
may disagree and may require additional data, may limit the scope of the approval or may deny approval altogether. 
Consequently, it may be difficult to predict the time and cost of product development of novel approaches for the 
treatment of diseases. 

In addition, success in preclinical work or early stage clinical trials does not ensure that later stage or larger 

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

Even if we could successfully develop new products or indications, we may make a strategic decision to 
discontinue development of a product candidate or indication if, for example, we believe commercialization will be 
difficult relative to the standard of care or other opportunities in our pipeline.

35

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, 
substantially greater financial, marketing and research and development and other resources and other technological 
or competitive advantages. One or more of our competitors may benefit from significantly greater sales and 
marketing capabilities, may develop products that are accepted more widely than ours or may receive patent 
protection that dominates, blocks or adversely affects our product development or business.

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

prodrugs and products approved under abbreviated regulatory pathways. Generic versions of drugs, biosimilars, 
prodrugs and products approved under abbreviated regulatory pathways are likely to be sold at substantially lower 
prices than branded products. Accordingly, the introduction of such products, as well as other lower-priced competing 
products, may significantly reduce both the price that we are able to charge for our products and the volume of 
products we sell, which will negatively impact our revenues. In addition, when a generic version of one of our 
products is commercialized, it may, in some cases, be automatically substituted for our product and reduce our 
revenues in a short period of time.

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, including TECFIDERA, our business could 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 biosimilars, follow-on products, generic versions of branded MS products, prodrugs or 
products approved under abbreviated regulatory pathways, which would be significantly less costly than our 
products to bring to market and would be offered for sale at lower prices, and could result in a significant 
percentage of the sales of our products being lost to such biosimilars, follow-on products, generic versions 
of branded MS products, prodrugs or products approved under abbreviated regulatory pathways;

• 

the 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 and maintain new 

and current patients to our therapies; 

•  damage to physician and patient confidence in any of our MS products, generic or biosimilars of our MS 

products or any other product from the same class as one of our 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 or generic or biosimilars of 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.

In the SMA market, we face competition from a new gene therapy product that was approved in the U.S. in May 

2019 for the treatment of SMA. Additionally, we are aware of other products in development that, if successfully 
developed and approved, may compete with SPINRAZA in the SMA market, including potential oral products. Future 
sales of SPINRAZA may be adversely affected by the commercialization of competing products.

Our business may be adversely affected if we do not successfully execute or realize the anticipated benefits of our 

strategic and growth initiatives.

The successful execution of our strategic and growth initiatives may depend upon internal development 

projects, commercial initiatives, external opportunities, which may include the acquisition, partnering and in-licensing 
of products, technologies and companies or the entry into strategic alliances and collaborations, or the disposition 
of certain of our assets or operations. 

36

While we believe we have a number of promising programs in our pipeline, failure or delay of internal 

development projects to advance or difficulties in executing on our commercial initiatives could impact our current 
and future growth, resulting in additional reliance on external development opportunities for growth. 

Supporting 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. We have in the past 
made, and may continue to make, significant operating and capital expenditures for potential new products in our 
pipeline prior to regulatory approval with no assurance that such investment will be recouped, which may adversely 
affect our financial condition, business and operations.

The availability of high quality, fairly valued external product development is limited and the opportunity for their 

acquisition is highly competitive. As such, we are not certain that we will be able to identify suitable candidates for 
acquisition or if we will be able to reach agreement. Furthermore, if we decide to dispose of certain of our assets or 
operations, we are not certain that we will be able to identify a suitable counterparty or if we will be able to reach 
agreement.

We may fail to initiate or complete transactions for many reasons and we may not be able to achieve the full 

strategic and financial benefits expected to result from transactions, or the benefits may be delayed or not occur at 
all. We may also face additional costs or liabilities in completed transactions that were not contemplated prior to 
completion.

Any failure in the execution of a transaction, in the integration of an acquired asset or business or in achieving 

expected synergies could result in slower growth, higher than expected costs, the recording of asset impairment 
charges and other actions which could adversely affect our business, financial condition and results of operations.

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 clinical 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 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 candidate or indication if, for example, we believe commercialization will be difficult 
relative to the standard of care or other opportunities in our pipeline.

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

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

We have opened clinical trial sites and are enrolling patients in a number of countries where our experience is 
limited. In most cases, we use the services of third parties to carry out our clinical trial related activities and rely on 
such parties to accurately report their results. Our reliance on third parties for these activities may impact our ability 
to control the timing, conduct, expense and quality of our clinical trials. One CRO has responsibility for a substantial 
portion of our activities and reporting related to our clinical trials. 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 

37

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.

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, generic or biosimilar versions of our marketed products 

or any other products from the same class as one of our products may have a negative impact on our business. 
Discovery of safety issues with our products could create product liability and could cause additional regulatory 
scrutiny and requirements for additional labeling or safety monitoring, withdrawal of products from the market and 
the imposition of fines or criminal penalties. Adverse safety events may also damage physician, patient and/or 
investor confidence in our products and our reputation. Any of these could result in liabilities, loss of revenues, 
material write-offs of inventory, material impairments of intangible assets, goodwill and fixed assets, material 
restructuring charges or 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) or liver injury in the label 
for certain of our products, may significantly reduce expected revenues for those products and require significant 
expense and management time. 

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 to operate our business. Our ability to 
effectively manage our business depends on the security, reliability and adequacy of our technology systems and 
data, which includes use of cloud technologies, including Software as a Service (SaaS), Platform as a Service (PaaS) 
and Infrastructure as a Service (IaaS). A breakdown, invasion, corruption, destruction or breach of our technology 
systems, including the cloud technologies that we utilize, and/or unauthorized access to our data and information 
could subject us to liability or negatively impact the operation of our business. Our technology systems, including the 
cloud technologies that we utilize, continue to increase in multitude and complexity, 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, including the cloud technologies that we utilize, may pose a 
risk that sensitive data, including intellectual property, trade secrets or personal information belonging to us, our 
patients, customers or other business partners, may be exposed to unauthorized persons or to the public. 

Cyber-attacks are increasing in their frequency, sophistication and intensity, and are becoming increasingly 

difficult to detect. They are often carried out by motivated, well-resourced, skilled and persistent actors, including 
nation states, organized crime groups, “hacktivists” and employees or contractors acting with malicious intent. 
Cyber-attacks could include the deployment of harmful malware and key loggers, ransomware, a denial-of-service 
attack, a malicious website, the use of social engineering and other means to affect the confidentiality, integrity and 
availability of our technology systems and data. Cyber-attacks could also include supply chain attacks, which could 
cause a delay in the manufacturing of our products or products produced for contract manufacturing. Our key 
business partners face similar risks and any security breach of their systems could adversely affect our security 
posture. In addition, our increased use of cloud technologies could heighten these and other operational risks, and 
any failure by cloud technology service providers to adequately safeguard their systems and prevent cyber-attacks 
could disrupt our operations and result in misappropriation, corruption or loss of confidential or propriety 
information.

While we continue to build and improve our systems and infrastructure, including our business continuity plans, 
there can be no assurance that our efforts will prevent breakdowns or breaches in our systems that could adversely 
affect our business and operations and/or result in the loss of critical or sensitive information, which could result in 
financial, legal, business, operational or reputational harm to us, loss of competitive advantage or loss of consumer 
confidence. In addition, our liability insurance may not be sufficient in type or amount to cover us against claims 
related to security breaches, cyber-attacks and other related breaches.

38

We depend on relationships with collaborators, joint venture partners and other third parties for revenues, and for 

the development, regulatory approval, commercialization and marketing of certain of our products and product 
candidates, which are outside of our full control.

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

•  we may be unable to control the resources our collaborators, joint venture partners or third parties devote 

to our programs, products or product candidates;

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

milestones or ownership of rights to technology developed with our collaborators, joint venture partners or 
other third parties, and the underlying agreement with our collaborators, joint venture partners or other third 
parties may fail to provide us with significant protection or may fail to be effectively enforced if the 
collaborators, joint ventures partners or third parties fail to perform; 

• 

• 

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

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

•  any failure on the part of our collaborators, joint venture partners or other third parties to comply with 

applicable laws, regulatory requirements and/or applicable contractual obligations in the marketing, sale 
and maintenance of the marketing authorization of our products or to fulfill any responsibilities our 
collaborators, joint venture partners or other third parties may have to protect and enforce any intellectual 
property rights underlying our products could have an adverse effect on our revenues as well as involve us 
in possible legal proceedings; and

•  any improper conduct or actions on the part of our collaborators, joint venture partners or other third 

parties could subject us to civil or criminal investigations and monetary and injunctive penalties, impact the 
accuracy and timing of our financial reporting and/or adversely impact our ability to conduct business, our 
operating results and our reputation.

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 and/or we may not realize the anticipated benefits of the 
collaboration arrangements and/or joint ventures.

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

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

containing the cost of health care. Legislative and regulatory proposals, enactments to reform health care insurance 
programs and increasing pressure from social sources could significantly influence the manner in which our products 
are prescribed and purchased. For example, provisions of the PPACA have resulted in changes in the way health care 
is paid for by both governmental and private insurers, including increased rebates owed by manufacturers under the 
Medicaid Drug Rebate Program, annual fees and taxes on manufacturers of certain branded prescription drugs, the 
requirement that manufacturers participate in a discount program for certain outpatient drugs under Medicare Part D 
and the expansion of the number of hospitals eligible for discounts under Section 340B of the PHSA. These changes 
have had and are expected to continue to have a significant impact on our business. 

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

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

39

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

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

There is also significant economic pressure on state budgets that 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 limitation on prices and 
reimbursement for our products. 

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

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

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

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

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

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

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

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 products and place significant restrictions on the marketing practices of 
health care companies. Health care companies such as ours are facing heightened scrutiny of their relationships 
with health care providers from anti-corruption enforcement officials. In addition, health care companies such as 
ours have been the target of lawsuits and investigations alleging violations of government regulation, including 
claims asserting submission of incorrect pricing information, impermissible off-label promotion of pharmaceutical 
products, payments intended to influence the referral of health care business, submission of false claims for 
government reimbursement, antitrust violations or violations related to environmental matters. There is also 

40

enhanced scrutiny of company-sponsored patient assistance programs, including insurance premium and co-pay 
assistance programs and donations to third-party charities that provide such assistance. The U.S. government has 
challenged some of our donations to third-party charities that provide patient assistance. If we, or our vendors or 
donation recipients, are found to fail to comply with relevant laws, regulations or government guidance in the 
operation of these programs, we could be subject to significant fines or penalties. Risks relating to compliance with 
laws and regulations may be heightened as we continue to expand our global operations and enter new therapeutic 
areas with different patient populations, which may have different product distribution methods, marketing programs 
or patient assistance programs from those we currently utilize or support. 

Conditions and regulations governing the health care industry are subject to change, with possible retroactive 

effect, including:

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

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

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

new products and result in lost market opportunity; 

•  government shutdowns or relocations may result in delays to the review and approval process, slowing the 

time necessary for new drug candidates to be reviewed and/or approved, which may adversely affect our 
business;

• 

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. We 
cannot ensure that our compliance controls, policies and procedures will in every instance protect us from acts 
committed by our employees, collaborators, partners or third-party providers that would violate the laws or 
regulations of the jurisdictions in which we operate. Whether or not we have complied with the law, an investigation 
into alleged unlawful conduct could increase our expenses, damage our reputation, divert management time and 
attention and adversely affect our business.

41

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. There is no guarantee that our efforts and strategies to 
expand sales in international markets will succeed. Emerging market countries may be especially vulnerable to 
periods of global and local political, legal, regulatory and financial instability and may have a higher incidence of 
corruption and fraudulent business practices. Further, certain countries may require local clinical trial data as part of 
the drug registration process in addition to global clinical trials, which can add to overall drug development and 
registration timelines. We may also be required to increase our reliance on third-party agents and unfamiliar 
operations and arrangements previously utilized by companies we partner or collaborate with or acquire in emerging 
markets.

Our sales and operations are subject to the risks of doing business internationally, including:

• 

less favorable intellectual property or other applicable laws; 

• 

the introduction or greater acceptance of competing products, including generics, biosimilars, prodrugs and 
products approved under abbreviated regulatory pathways;

• 

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

• 

• 

• 

• 

limitations and additional pressures on our ability to obtain and maintain product pricing or receive price 
increases, including those resulting from governmental or regulatory requirements;

the inability to successfully complete subsequent or confirmatory clinical trials in countries where our 
experience is limited;

longer payment and reimbursement cycles and uncertainties regarding the collectability of accounts 
receivable; 

fluctuations in foreign currency exchange rates that may adversely impact our revenues, net income and 
value of certain of our investments; 

•  difficulties in staffing and managing international operations; 

• 

the imposition of governmental controls; 

•  diverse data privacy and protection requirements;

• 

• 

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

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

• 

the effects of the implementation of the U.K.’s departure from the E.U., known as Brexit;

•  compliance with complex import and export control laws;

• 

restrictions on direct investments by foreign entities and trade restrictions; 

•  greater political or economic instability; 

•  changes in tax laws;

• 

the imposition of tariffs or embargoes and other trade restrictions, including the recent tariffs imposed by 
the U.S. and China and the possibility of additional tariffs or other trade restrictions relating to trade 
between the two countries; and

• 

the impact of public health epidemics on employees and the global economy, such as the coronavirus 
currently impacting China and elsewhere.

In addition, our international operations are subject to regulation under U.S. law. For example, the FCPA 
prohibits U.S. companies and their representatives from paying, offering to pay, promising to pay or authorizing the 
payment of anything of value to any foreign government official, government staff member, political party or political 

42

candidate for the purpose of obtaining or retaining business or to otherwise obtain favorable treatment or influence a 
person working in an official capacity. In many countries, the health care professionals we regularly interact with may 
meet the FCPA's definition of a foreign government official. Failure to comply with domestic or foreign laws could 
result in various adverse consequences, including: possible delay in approval or refusal to approve a product, recalls, 
seizures or withdrawal of an approved product from the market, disruption in the supply or availability of our products 
or suspension of export or import privileges, the imposition of civil or criminal sanctions, the prosecution of 
executives overseeing our international operations and damage to our reputation. Any significant impairment of our 
ability to sell products outside of the U.S. could adversely impact our business and financial results.

We are building a large-scale biologics manufacturing facility, which will result in the incurrence of significant 

investment with no assurance that such investment will be recouped.

We believe we currently have sufficient large-scale manufacturing capacity to meet our near-term manufacturing 
requirements. However, in order to support our drug development pipeline, in 2015 we made the decision to expand 
our large molecule production capacity by building a large-scale biologics manufacturing facility in Solothurn, 
Switzerland with no assurance that the additional capacity would be required. We expect the Solothurn 
manufacturing facility to be partially operational by the end of 2020; however, there can be no assurance that we will 
be able to meet our expected timeline. If there are delays in bringing the Solothurn manufacturing facility online, we 
may not have sufficient large-scale manufacturing capacity to meet our long-term manufacturing requirements.

In addition, we have made significant investments in connection with the building of this manufacturing facility 

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. Charges resulting from excess capacity would have a negative effect on our financial condition and 
results of operations.

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

revenues.

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

including:

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

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

•  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.

•  Global Bulk Supply Risks. We rely on our principal manufacturing facilities for the production of drug 
substance for our large molecule products and product candidates. Our global bulk supply of these 
products and product candidates depends on the uninterrupted and efficient operation of these facilities, 
which could be adversely affected by equipment failures, labor shortages, natural disasters, power failures, 
cyber-attacks and numerous other factors. In addition, we are building a large-scale biologics manufacturing 
facility in Solothurn, Switzerland, which we expect to be partially operational by the end of 2020. However, 
there can be no assurance that we will be able to meet our expected timeline. If there are delays in bring 

43

the Solothurn manufacturing facility online, we may not have sufficient large-scale manufacturing capacity to 
meet our long-term manufacturing requirements.

•  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. 

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

In addition, although we have business continuity plans to reduce the potential for manufacturing disruptions or 

delays and reduce the severity of a disruptive event, there is no guarantee that these plans will be adequate, which 
could adversely affect our business and operations.

Our success in commercializing biosimilars developed by Samsung Bioepis is subject to risks and uncertainties 
inherent in the development, manufacture and commercialization of biosimilars. If Samsung Bioepis is unsuccessful in 
the development, manufacture and commercialization of biosimilars, we may not realize the anticipated benefits of our 
investment in Samsung Bioepis.

Our success in commercializing biosimilars developed by Samsung Bioepis is subject to a number of risks, 

including:

•  Reliance on Third Parties. We are dependent on the efforts of Samsung Bioepis and other third parties over 
whom we have limited or no control in the development and manufacturing of biosimilars products. In 
addition, following the divestiture of our Hillerød, Denmark manufacturing operations, we are dependent on 
FUJIFILM for the manufacture of biosimilar products. If Samsung Bioepis, FUJIFILM or 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 or result in imposition of monetary damages, penalties or 
other civil sanctions and damage our reputation; 

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

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

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

or supply chain difficulties, we may be unable to meet higher than anticipated demand. In addition, 
following the divestiture of our Hillerød, Denmark manufacturing operations, we are dependent on FUJIFILM 
for the manufacture of biosimilar products. FUJIFILM may not perform their obligations in a timely and cost 
effective manner or in compliance with applicable regulations and may be unable or unwilling to increase 
production capacity commensurate with demand for our existing or future biosimilar products;

•  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 manner are additional factors that may impact our success and/
or the success of Samsung Bioepis in this business area; and

44

•  Legal and Regulatory Requirements. Any improper conduct or actions on the part of Samsung Bioepis or our 
joint venture partner, Samsung BioLogics, could damage our reputation and be distracting to management. 
In particular, Samsung BioLogics is currently subject to an ongoing criminal investigation, which may impact 
the operations of Samsung Bioepis and its business or divert the attention of the Samsung Bioepis 
management team from its ongoing operations and business. 

If Samsung Bioepis is unsuccessful in the development, manufacture and commercialization of biosimilar 

products, we may not realize the anticipated benefits of our investment in Samsung Bioepis.

In addition, as Samsung Bioepis is a privately-held entity, our ability to liquidate our investment in Samsung 

Bioepis may be limited and we may realize significantly less than the value of such investment.

Our operating results are subject to significant fluctuations.

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

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

• 

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

• 

• 

impairments with respect to investments, fixed assets and long-lived assets, including in-process research 
and development (IPR&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; 

•  payments in connection with acquisitions, divestitures and other business development activities; and

• 

failure to meet certain contractual commitments, including, for example, the minimum batch production 
commitment guarantees we have provided as part of the transaction with FUJIFILM.

Our revenues and certain assets and liabilities are also subject to foreign currency exchange rate fluctuations 

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

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

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

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

jurisdictions. As a result, our effective tax rate is derived from a combination of applicable tax rates (including 
withholding taxes) 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 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, interpretations by tax authorities or other bodies with jurisdiction, the result of tax cases, changes in 
accounting for income taxes and changes in tax laws either prospectively or retrospectively (including by regulation). 
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 

45

statements.

The Tax Cuts and Jobs Act of 2017 (2017 Tax Act) resulted in significant changes to the U.S. corporate income 
tax system. These changes include a federal statutory rate reduction from 35% to 21%, the elimination or reduction 
of certain domestic deductions and credits and limitations on the deductibility of interest expense and executive 
compensation. The 2017 Tax Act also transitions international taxation from a worldwide system to a modified 
territorial system, which has the effect of subjecting certain earnings of our foreign subsidiaries and collaborations 
to immediate U.S. taxation as global intangible low-taxed income (GILTI) or Subpart F income, and includes base 
erosion prevention measures on U.S. earnings and the reduced effective tax rate on income that comes from U.S. 
exports, called Foreign Derived Intangible Income. These changes became effective in 2018.

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

Our estimates concerning the impact of the 2017 Tax Act on our accounting and on our business remain 
subject to developing interpretations of the provisions of the 2017 Tax Act. U.S. Treasury regulations, administrative 
interpretations or court decisions interpreting the 2017 Tax Act may require further adjustments and changes in our 
estimates, which could have a material adverse effect on our business, results of operations or financial condition. 

The Swiss Federal Act on Tax Reform and AHV Financing (TRAF) will result in significant changes to the Swiss 
cantonal income tax system. These changes include the elimination of historic favorable cantonal tax regimes, the 
introduction of a patent box regime and the introduction of a research and development super deduction. The TRAF 
also provides for transitional rules to lessen the immediate impact of the elimination of the favorable cantonal tax 
regimes. These changes became effective on January 1, 2020. In response to the TRAF, each canton must enact 
cantonal tax reform to comply with the framework provided by the TRAF and are also expected to lower the statutory 
tax rate to compensate for the elimination of the historic favorable cantonal tax regimes. We will account for the 
impact of the TRAF and the specific cantonal tax reform changes in the period in which each canton in which we 
operate enacts the cantonal tax reform. Zug, a canton in which we operate, enacted cantonal tax reform in the third 
quarter of 2019 and Solothurn, another canton in which we operate, will hold a public referendum on the enactment 
of cantonal tax reform on February 9, 2020. Upon the enactment of Zug cantonal tax reform, we were required to 
remeasure our Swiss deferred tax assets and liabilities, to account for the elimination of the historic favorable 
cantonal tax regimes, the impact of the transitional rules and the change in the statutory cantonal tax rate. Further 
remeasurement of our Swiss deferred tax assets and liabilities could have a significant impact on our income tax 
provision in the period of enactment.

In addition, the enactment of some or all of the recommendations set forth or that may be forthcoming in the 
Organization for Economic Cooperation and Development’s project on “Base Erosion and Profit Shifting” (BEPS) by 
tax authorities and economic blocs in the countries in which we operate, could unfavorably impact our effective tax 
rate. These initiatives focus on common international principles for the entitlement to taxation of global corporate 
profits and minimum global tax rates.

Our investments in properties may not be fully realized.

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

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

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 

46

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 shares or that we will repurchase shares at 

favorable prices.

From time to time our Board of Directors authorizes share repurchase programs, including our March 2019 

Share Repurchase Program and our December 2019 Share Repurchase Program. The amount and timing of share 
repurchases are subject to capital availability and our determination that share repurchases are in the best interest 
of our shareholders and are in compliance with all respective laws and our agreements applicable to the repurchase 
of shares. Our ability to repurchase shares will depend upon, among other factors, our cash balances and potential 
future capital requirements for strategic transactions, our results of operations, our financial condition and other 
factors beyond our control that we may deem relevant. A reduction in repurchases under, or the completion of, our 
2019 share repurchase programs could have a negative effect on our stock price. We can provide no assurance that 
we will repurchase shares at favorable prices, if at all.

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

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

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

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

business. 

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

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

• 

increase our vulnerability to general adverse economic and industry conditions;

• 

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

• 

• 

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

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

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

injury.

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

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

The illegal distribution and sale by third parties of counterfeit or unfit 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 

47

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. In addition, inventory that is stolen from warehouses, 
plants or while in-transit, and that is subsequently improperly stored and sold through unauthorized channels, could 
adversely impact patient safety, our reputation and our business.

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

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

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

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

attempting to acquire us.

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

Item  1B.  

Unresolved Staff Comments

None.

Item  2.  

Properties

Below is a summary of our owned and leased properties as of December 31, 2019.

Massachusetts

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

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

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

follows:

•  800,000 square feet in Cambridge, MA, which is comprised of offices for our corporate headquarters and 

other administrative and development functions and laboratories, of which 289,000 square feet is 
subleased by multiple companies for general office space, laboratories and manufacturing facilities; and

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

the remaining term of our lease agreement.

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

North Carolina

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

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

•  188,000 square foot multi-purpose facility, including an ASO manufacturing suite and administrative space;

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

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

48

•  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 approximately 40,000 square feet of warehouse space in Durham, NC. 

Switzerland

In order to support our drug development pipeline, we are building a large-scale biologics manufacturing facility 
in Solothurn, Switzerland. We expect this facility to be partially operational by the end of 2020. Upon completion, the 
facility will include 393,000 square feet related to a large-scale biologics manufacturing facility, 290,000 square feet 
of warehouse, utilities and support space and 51,000 square feet of administrative space.  

Other International

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

Denmark and numerous other countries. Our international lease agreements expire at various dates through the year 
2030.

Item  3.  

Legal Proceedings

For a discussion of legal matters as of December 31, 2019, 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.

49

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.” As of February 4, 

2020, there were approximately 540 shareholders of record of our common stock.

Dividends

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

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

Issuer Purchases of Equity Securities

 The following table summarizes our common stock repurchase activity during the fourth quarter of 2019:

Period
October 2019
November 2019
December 2019

Total

Total Number of
Shares Purchased
(#)
3,215,407 $
1,550,825 $
2,928,634 $
7,694,866 $

Average Price
Paid per Share
($)

238.71
292.01
297.99
272.01

Total Number of
Shares Purchased
as Part of Publicly
Announced Programs
(#)
3,215,407 $
1,550,825 $
2,928,634 $

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

2,604.7
2,151.8
6,279.1

In December 2019 our Board of Directors authorized our December 2019 Share Repurchase Program, which is 

a program to repurchase up to $5.0 billion of our common stock. Our December 2019 Share Repurchase Program 
does not have an expiration date. All share repurchases under our December 2019 Share Repurchase Program will 
be retired. We did not repurchase shares of our common stock under our December 2019 Share Repurchase 
Program during the year ended December 31, 2019.

In March 2019 our Board of Directors authorized our March 2019 Share Repurchase Program, which is a 
program to repurchase up to $5.0 billion of our common stock. Our March 2019 Share Repurchase Program does 
not have an expiration date. All share repurchases under our March 2019 Share Repurchase Program will be retired. 
Under our March 2019 Share Repurchase Program, we repurchased and retired approximately 14.7 million shares of 
our common stock at a cost of approximately $3.7 billion during the year ended December 31, 2019.

In August 2018 our Board of Directors authorized a program to repurchase up to $3.5 billion of our common 
stock (2018 Share Repurchase Program), which was completed as of June 30, 2019. All share repurchases under 
our 2018 Share Repurchase Program were retired. Under our 2018 Share Repurchase Program, we repurchased and 
retired approximately 8.9 million shares of our common stock at a cost of approximately $2.1 billion during the year 
ended December 31, 2019.

50

Performance Graph

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

the Nasdaq Pharmaceutical Index, the S&P 500 Index and the Nasdaq Biotechnology Index.

On February 1, 2017, we completed the spin-off of our hemophilia business, Bioverativ Inc. (Bioverativ), as an 
independent, publicly traded company. In connection with the spin-off, each Biogen shareholder received one share 
of Bioverativ common stock for every two shares of Biogen common stock they owned. For additional information on 
the spin-off of our hemophilia business, please read Note 3, Hemophilia Spin-Off, to our consolidated financial 
statements included in our Annual Report on Form 10-K for the year ended December 31, 2018 (2018 Form 10-K).

The performance graph below assumes the investment of $100.00 on December 31, 2014, in our common 
stock and each of the three indexes, with dividends being reinvested. Our stock prices have been adjusted for the 
effect of the spin-off of our hemophilia business. The five-year cumulative total stockholder return for Biogen does 
not reflect the reinvestment by Biogen shareholders of the distribution they received in connection with the spin-off 
of our hemophilia business or any subsequent increase or decrease in value of Bioverativ stock subsequent to the 
spin-off. 

The stock price performance in the graph below is not necessarily indicative of future price performance.

Biogen Inc.
Nasdaq Pharmaceutical Index
S&P 500 Index
Nasdaq Biotechnology Index

2014
$100.00
$100.00
$100.00
$100.00

2015
$90.25
$105.43
$101.38
$111.77

2016
$83.54
$104.29
$113.51
$87.91

2017
$101.74
$124.23
$138.29
$106.95

2018
$96.11
$134.11
$132.23
$97.47

2019
$94.77
$153.57
$173.86
$121.94

The information included under the heading Performance Graph is “furnished” and not “filed” for purposes of 

Section 18 of the Securities Exchange Act, or otherwise subject to the liabilities of that section, nor shall it be 
deemed to be “soliciting material” subject to Regulation 14A or incorporated by reference in any filing under the 
Securities Act of 1933 or the Securities Exchange Act of 1934.

51

Item 6.  

Selected Financial Data

BIOGEN INC. AND SUBSIDIARIES
SELECTED FINANCIAL DATA

Our results of operations are summarized as follows:

For the Years Ended December 31,

2019

2018

2017

2016

2015

(In millions, except per share amounts)
Results of Operations (1)
Product revenues, net (2)
Revenues from anti-CD20 therapeutic programs
Other revenues

Total revenues

Total cost and expenses (3)
Income from operations
Other income (expense), net
Income before income tax expense and equity
in loss of investee, net of tax
Income tax expense (4)
Equity in loss of investee, net of tax
Net income
Net income (loss) attributable to noncontrolling 
interests, net of tax (5)
Net income attributable to Biogen Inc.

Diluted Earnings Per Share (6)
Diluted earnings per share attributable to
Biogen Inc.
Weighted-average shares used in calculating
diluted earnings per share attributable to
Biogen Inc.

$ 11,379.8 $10,886.8 $10,354.7 $ 9,817.9 $ 9,188.5
1,339.2
236.1
10,763.8
5,872.8
4,891.0
(123.7)

1,314.5
316.4
11,448.8
6,297.1
5,151.7
(218.7)

1,559.2
360.0
12,273.9
6,928.1
5,345.8
(217.0)

2,290.4
707.7
14,377.9
7,335.3
7,042.6
83.3

1,980.2
585.9
13,452.9
7,564.3
5,888.6
11.0

7,125.9
1,158.0
79.4
5,888.5

5,899.6
1,425.6
—
4,474.0

5,128.8
2,458.7
—
2,670.1

4,933.0
1,237.3
—
3,695.7

4,767.3
1,161.6
12.5
3,593.2

—

46.2
131.0
5,888.5 $ 4,430.7 $ 2,539.1 $ 3,702.8 $ 3,547.0

(7.1)

43.3

$

$

31.42 $

21.58 $

11.92 $

16.93 $

15.34

187.4

205.3

213.0

218.8

231.2

Our financial condition is summarized as follows:

(In millions)
Financial Condition (1)
Cash, cash equivalents and marketable
securities
Total assets
Notes payable, less current portion (7)
Total Biogen Inc. shareholders’ equity (6)

2019

2018

2017

2016

2015

As of December 31,

$
5,884.0 $ 4,913.9 $ 6,746.3 $ 7,724.5 $ 6,188.9
$ 27,234.3 $25,288.9 $23,652.6 $22,876.8 $19,504.8
$
4,459.0 $ 5,936.5 $ 5,935.0 $ 6,512.7 $ 6,521.5
$ 13,343.2 $13,039.6 $12,612.8 $12,140.1 $ 9,372.8

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

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

(1)  On February 1, 2017, we completed the spin-off of our hemophilia business. Our consolidated results of operations and 
financial condition reflect the financial results of our hemophilia business for all periods through January 31, 2017. 

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

•  Commercial sales of VUMERITY in the U.S. began in the fourth quarter of 2019.

52

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

beginning in the first quarter of 2017.

•  Under our collaboration agreement with AbbVie Inc. (AbbVie), we began to recognize revenues on sales of ZINBRYTA 
to third parties in the E.U. in the third quarter of 2016. In March 2018 we and AbbVie announced the voluntary 
worldwide withdrawal of ZINBRYTA for RMS.

•  Under our commercial agreement with Samsung Bioepis, we began to recognize revenues on sales of BENEPALI and 
FLIXABI to third parties in certain countries in Europe in the first and third quarters of 2016, respectively, and began 
to recognize revenues on sales of IMRALDI to third parties in certain countries in Europe in the fourth quarter of 
2018. 

•  We stopped recognizing revenues from ALPROLIX and ELOCTATE effective February 1, 2017, upon the completion of 

the spin-off of our hemophilia business.

(3)  Total cost and expenses included the following charges:

•  Pre-tax research and development expenses related to upfront and milestone payments made upon entering into 

strategic agreements or achievement of specified development milestones totaling $253.8 million, $602.7 million, 
$494.0 million, $167.6 million and $158.2 million in 2019, 2018, 2017, 2016 and 2015, respectively. 

• 

Impairment charges related to certain acquired intangible assets totaling $215.9 million, $366.1 million, $359.4 
million and $12.2 million in 2019, 2018, 2017 and 2016, respectively. For additional information, please read Note 
6, Intangible Assets and Goodwill, to our consolidated financial statements included in this report.

•  Pre-tax research and development expenses of $486.2 million in 2018 related to the 2018 Ionis Agreement. For 
additional information on our collaboration arrangements with Ionis, please read Note 18, Collaborative and Other 
Relationships, to our consolidated financial statements included in this report.

•  Pre-tax charges to acquired IPR&D totaling $112.5 million and $120.0 million in 2018 and 2017, respectively, for 
upfront payments made upon the closing of our asset purchase transactions, as the underlying assets had not yet 
reached technological feasibility.

•  Pre-tax charge of $454.8 million in 2016 related to our January 2017 settlement and license agreement with Forward 

Pharma A/S (Forward Pharma).

•  Pre-tax restructuring and other exit-related costs totaling $1.5 million, $12.0 million, $0.9 million, $103.6 million and 

$93.4 million in 2019, 2018, 2017, 2016 and 2015, respectively.

(4)  Income tax expense included the following activities:

• 

• 

• 

Income tax expense in 2019 reflects a benefit of approximately $205.0 million related to an internal reorganization 
of certain intellectual property rights and the impact of the enactment of a new taxing regime in the country and 
certain cantons of Switzerland, which we refer to as Swiss Tax Reform, offset by a $68.9 million tax expense related 
to the divestiture of our subsidiary that owned our Hillerød, Denmark manufacturing operations. For additional 
information, please read Note 16, Income Taxes, to our consolidated financial statements included in this report.

Income tax expense in 2018 reflects a net increase to expense of approximately $125.0 million recognized upon 
finalization of our estimates related to the Transition Toll Tax, the remeasurement of our deferred tax assets and 
liabilities, the impact of electing to record deferred taxes on GILTI and other aspects of the 2017 Tax Act. For 
additional information, please read Note 16, Income Taxes, to our consolidated financial statements included in this 
report.

Income tax expense in 2017 includes a $1,173.6 million estimate pursuant to SEC Staff Accounting Bulletin No. 
118. Our estimate included $989.6 million associated with the Transition Toll Tax and $184.0 million related to the 
impact of remeasuring our deferred tax balances to reflect the new federal statutory rate and other changes to U.S. 
tax law.

(5)  Net income (loss) attributable to noncontrolling interests, net of tax included the following activities:

•  Pre-tax charges of $50.0 million and $150.0 million for the years ended December 31, 2018 and 2017, respectively, 
for payments made under the terms of the Neurimmune Agreement in exchange for reductions in the previously 
negotiated royalty rates payable on products developed under the Neurimmune Agreement, including royalties payable 
on potential commercial sales of aducanumab. 

•  A pre-tax charge of $60.0 million for the year ended December 31, 2015, for a milestone payment due to 

Neurimmune upon the enrollment of the first patient in a Phase 3 study of aducanumab.

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

(6)  Total Biogen Inc. shareholders' equity reflects the repurchase of approximately 63.4 million shares of our common stock at 

a cost of approximately $17.6 billion between December 31, 2015 and December 31, 2019:

53

•  During 2019 we repurchased and retired approximately 14.7 million and 8.9 million shares of our common stock at a 
cost of approximately $3.7 billion and $2.1 billion under our March 2019 Share Repurchase Program and our 2018 
Share Repurchase Program, respectively.

•  During 2018 we repurchased and retired approximately 4.3 million and 10.5 million shares of our common stock at a 

cost of approximately $1.4 billion and $3.0 billion under our 2018 Share Repurchase Program and a program 
authorized by our Board of Directors in July 2016 for the repurchase of up to $5.0 billion of our common stock (2016 
Share Repurchase Program), respectively.

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

approximately $1.0 billion under our 2016 Share Repurchase Program.

•  During 2017 we repurchased approximately 1.2 million shares of our common stock at a cost of $365.4 million 
under a program authorized by our Board of Directors in February 2011 for the repurchase of up to 20.0 million 
shares of our common stock. 

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

approximately $1.0 billion under our 2016 Share Repurchase Program.

•  During 2015 we repurchased and retired approximately 16.8 million shares of our common stock at a cost of $5.0 
billion under a program authorized by our Board of Directors in May 2015 for the repurchase of up to $5.0 billion of 
our common stock.

(7)  Notes payable, less current portion reflect:

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

$550.0 million; and 

•  The issuance of our senior unsecured notes for an aggregate principal amount of $6.0 billion in September 2015.

54

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 the accompanying notes beginning on 
page F-1 of this report. 

For our discussion of the year ended December 
31, 2018, compared to the year ended December 31, 
2017, please read Item 7. Management's Discussion 
and Analysis of Financial Condition and Results of 
Operations located in our 2018 Form 10-K.

Executive Summary

Introduction

Biogen is a global biopharmaceutical company 

focused on discovering, developing and delivering 
worldwide innovative therapies for people living with 
serious neurological and neurodegenerative diseases 
as well as related therapeutic adjacencies. Our core 
growth areas include MS and neuroimmunology; AD 
and dementia; neuromuscular disorders, including 
SMA and ALS; movement disorders, including 
Parkinson's disease; and ophthalmology. We are also 
focused on discovering, developing and delivering 
worldwide innovative therapies in our emerging growth 
areas of immunology; neurocognitive disorders; acute 
neurology; and pain. In addition, we commercialize 
biosimilars of advanced biologics. We support our 
drug discovery and development efforts through the 
commitment of significant resources to discovery, 
research and development programs and business 
development opportunities.

Our marketed products include TECFIDERA, 

AVONEX, PLEGRIDY, TYSABRI, VUMERITY and 
FAMPYRA for the treatment of MS; SPINRAZA for the 
treatment of SMA; and FUMADERM for the treatment 
of severe plaque psoriasis. We also have certain 
business and financial rights with respect to RITUXAN 
for the treatment of non-Hodgkin's lymphoma, CLL 
and other conditions; RITUXAN HYCELA for the 
treatment of non-Hodgkin's lymphoma and CLL; 
GAZYVA for the treatment of CLL and follicular 
lymphoma; OCREVUS for the treatment of PPMS and 
RMS; and other potential anti-CD20 therapies 
pursuant to our collaboration arrangements with 
Genentech. For additional information on our 
collaboration arrangements with Genentech, please 
read Note 18, Collaborative and Other Relationships, 
to our consolidated financial statements included in 
this report.

Our innovative drug development and 

commercialization activities are complemented by our 
biosimilar products that expand access to medicines 

55

and reduce the cost burden for healthcare systems. 
Through Samsung Bioepis, our joint venture with 
Samsung BioLogics Co., Ltd., we market and sell  
BENEPALI, an etanercept biosimilar referencing 
ENBREL, IMRALDI, an adalimumab biosimilar 
referencing HUMIRA, and FLIXABI, an infliximab 
biosimilar referencing REMICADE, in certain countries 
in Europe and have exclusive rights to commercialize 
these products in China. Additionally, we have 
exclusive rights to commercialize two potential 
ophthalmology biosimilar products, SB11 referencing 
LUCENTIS and SB15 referencing EYLEA, in major 
markets worldwide, including the U.S., Canada, 
Europe, Japan and Australia. For additional 
information on our collaboration arrangements with 
Samsung Bioepis, please read Note 18, Collaborative 
and Other Relationships, to our consolidated financial 
statements included in this report.

Our revenues depend upon continued sales of 
our products, as well as the financial rights we have in 
our anti-CD20 therapeutic programs, and, unless we 
develop, acquire rights to and/or commercialize new 
products and technologies, we will be substantially 
dependent on sales from our products and our 
financial rights in our anti-CD20 therapeutic programs 
for many years.

In the longer term, our revenue growth will 

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

Business Environment

The biopharmaceutical industry and the markets 

in which we operate are intensely competitive. Many 
of our competitors are working to develop or have 
commercialized products similar to those we market 
or are developing and have considerable experience in 
undertaking clinical trials and in obtaining regulatory 
approval to market pharmaceutical products. In 
addition, the commercialization of certain of our own 
approved products, products of our collaborators and 
pipeline product candidates may negatively impact 
future sales of our existing products. 

Our products continue to face increasing 

competitive pressures from the introduction of generic 
versions, prodrugs and biosimilars of existing 
products as well as products approved under 
abbreviated regulatory pathways. Such products are 
likely to be sold at substantially lower prices than 
branded products, which may significantly reduce both 
the price that we are able to charge for our products 
and the volume of products we sell. In addition, when 

a generic version of one of our products is 
commercialized, it may, in some cases, be 
automatically substituted for our product and reduce 
our revenues in a short period of time.

Sales of our products depend, to a significant 

extent, on the availability and extent of adequate 
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.

Drug prices are under significant scrutiny in the 

markets in which our products are prescribed. We 
expect drug pricing and other health care costs to 
continue to be subject to intense political and societal 
pressures on a global basis. 

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

In addition to the impact of competition, pricing 

actions and other measures being taken worldwide 
designed to reduce healthcare costs and limit the 
overall level of government expenditures, our sales 
and operations could also be affected by other risks 
of doing business internationally, including the impact 
of foreign currency exchange fluctuations, changes in 
intellectual property legal protections and changes in 
trade regulations and procedures as well as the 
impact of the continued uncertainty of the credit and 
economic conditions in certain countries in Europe.

For additional information on our competition 

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

Brexit

In June 2016 the U.K. electorate voted in a 
referendum to voluntarily depart from the E.U., known 
as Brexit. In March 2017 the U.K. government 
formally notified the European Council of its intention 
to leave the E.U. and began to negotiate the terms of 
its withdrawal and outline the future relationship 
between the U.K. and the E.U. upon exit, which 
occurred on January 31, 2020. Following the U.K.’s 
departure, there is now a transition period during 
which existing arrangements will remain in place until 
the end of 2020, allowing detailed discussions on the 
future relationship between the U.K. and the E.U. to 
take place.

The potential impact on our results of operations 
and liquidity resulting from Brexit remains unclear. The 
actual effects of Brexit will depend upon many factors 
and significant uncertainty remains with respect to 
the future relationship between the U.K. and the E.U. 
The final outcome of the discussions during the 
transition period may impact certain of our research, 
commercial and general business operations in the 
U.K. and the E.U., including the approval and supply 
of our products. 

Compliance with any resulting regulatory 

mandates may prove challenging and the 
macroeconomic impact on our sales and consolidated 
results of operations from these developments 
remains unknown. We do not, however, expect Brexit 
to have a material impact on our consolidated results 
of operations as approximately 3.5%, 3.3% and 3.2% 
of our total product revenues in 2019, 2018 and 
2017, respectively, were derived from U.K. sales.

We have implemented measures to meet E.U. 

legal and regulatory requirements and to continue to 
modify our business operations to prepare for the 
finalization of the terms of the U.K.'s separation from 
the E.U. However, we cannot predict the direction 
Brexit-related developments will take nor the impact of 
those developments on our European operations and 
the economies of the markets where we operate. 
Therefore, we will continue to monitor for 
developments in this area and assess any potential 
impact on our business and results of operations.

56

Financial Highlights

Diluted earnings per share attributable to Biogen 

Inc. were $31.42 for 2019, representing an increase 
of 45.6% over $21.58 in the same period in 2018.

As described below under Results of Operations, 

our net income and diluted earnings per share 
attributable to Biogen Inc. for the year ended 
December 31, 2019, compared to the year ended 
December 31, 2018, reflects the following:

•  Total revenues were $14,377.9 million for 2019, 

representing an increase of 6.9% over 
$13,452.9 million in 2018.

•  Product revenues, net totaled $11,379.8 million 
for 2019, representing an increase of 4.5% over 
$10,886.8 million in 2018. This increase was 
primarily due to a 21.6% increase in revenues 
from SPINRAZA and a 35.4% increase in 
revenues from our biosimilar business. Product 
revenues, net, compared to the same period in 
2018, further reflects the unfavorable impact of 
foreign currency exchange of $53.0 million.

•  Revenues from anti-CD20 therapeutic programs 
totaled $2,290.4 million for 2019, representing 
an increase of 15.7% over $1,980.2 million in 
2018. This increase was primarily due to an 
increase in royalty revenues on sales of 
OCREVUS.

•  Other revenues totaled $707.7 million for 2019, 
representing an increase of 20.8% over $585.9 
million in 2018. This increase was primarily due 
to higher revenues from our manufacturing and 
supply agreement with Bioverativ, partially offset 
by lower revenues from other contract 
manufacturing agreements.

•  Total cost and expenses totaled $7,335.3 

million for 2019, representing a decrease of 
3.0% from $7,564.3 million in 2018. This 
decrease was primarily due to:

a 12.2% decrease in research and 
development expense, primarily due to 
the $482.6 million net charge 
recognized in 2018 upon the closing of 
the 2018 Ionis Agreement; 

a 34.4% decrease in amortization and 
impairment of acquired intangible 
assets, primarily due to the $366.1 
million impairment charges recognized in 
2018, which lowered amortization 
expense in subsequent periods, partially 
offset by the $215.9 million impairment 
charges recognized in 2019; and 

a net change in (gain) loss on fair value 
remeasurement of contingent 
consideration, primarily due to the gain 
recognized on the remeasurement of our 
continent consideration obligation 
related to the Phase 2b study of 
BG00011 for the potential treatment of 
IPF. 

This decrease was partially offset by:

a 12.7% increase in selling, general and 
administrative expenses, primarily due to 
increased commercial and medical 
investments as well as the timing of 
spend on selling, general and 
administrative expense; and 

a 7.7% increase in cost of sales, 
primarily due to our sales in 2019 to 
Bioverativ of hemophilia-related inventory 
on hand as of December 31, 2018, and 
an increase in sales of products within 
our biosimilar business. 

•  Net income attributable to Biogen Inc. was 

favorably impacted by a decrease in our effective 
tax rate to 16.3% for the year ended 
December 31, 2019, from 24.2% for 2018, due 
in part to an internal reorganization of certain 
intellectual property rights, the impact of Swiss 
Tax Reform and the 2018 unfavorable impacts of 
U.S. Tax Reform.

57

 
 
 
 
 
As described below under Financial Condition, 

Under the terms of the acquisition, we paid NST 

Liquidity and Capital Resources:

•  We generated $7,078.6 million of net cash flows 
from operations for 2019, which were primarily 
driven by earnings. 

•  Cash, cash equivalents and marketable 

securities totaled approximately $5,884.0 
million as of December 31, 2019.

•  We repurchased and retired approximately 23.6 
million shares of our common stock at a cost of 
approximately $5.8 billion during 2019 under our 
March 2019 Share Repurchase Program and our 
2018 Share Repurchase Program.

Acquisitions, Collaborative and Other Relationships

For additional information on our acquisitions, 
collaborative and other relationships discussed below, 
please read Note 2, Acquisitions, Note 3, Divestitures, 
Note 18, Collaborative and Other Relationships, and 
Note 19, Investments in Variable Interest Entities, to 
our consolidated financial statements included in this 
report.

Skyhawk Therapeutics, Inc.

In January 2019 we entered into a collaboration 

and research and development services agreement 
with Skyhawk pursuant to which the companies are 
leveraging Skyhawk's SkySTAR technology platform 
with the goal of discovering innovative small molecule 
treatments for patients with neurological diseases, 
including MS and SMA. In connection with this 
agreement, we made an upfront payment of $74.0 
million to Skyhawk. We are responsible for the 
development and potential commercialization of any 
therapies resulting from this collaboration. In October 
2019 we amended this agreement to add an 
additional discovery program. In connection with this 
amendment, we made a payment to Skyhawk of 
$15.0 million.

Acquisition of Nightstar Therapeutics plc

In June 2019 we completed our acquisition of all 
of the outstanding shares of NST, a clinical-stage gene 
therapy company focused on AAV treatments for 
inherited retinal disorders. As a result of this 
acquisition, we added two mid- to late-stage clinical 
assets, as well as preclinical programs, in 
ophthalmology. These assets include BIIB111, which 
is in Phase 3 development for the potential treatment 
of CHM, a rare, degenerative, X-linked inherited retinal 
disorder that leads to blindness and currently has no 
approved treatments, and BIIB112 (RPGR gene 
therapy), which is in Phase 2/3 development for the 
potential treatment of XLRP, which is a rare inherited 
retinal disease with no currently approved treatments.

58

shareholders $25.50 in cash for each issued and 
outstanding NST share, which totaled $847.6 million.

Divestiture of Hillerød, Denmark Manufacturing 

Operations

In August 2019 we completed the sale of all of 
the outstanding shares of our subsidiary that owned 
our biologics manufacturing operations in Hillerød, 
Denmark to FUJIFILM. Upon the closing of this 
transaction, we received approximately $881.9 million 
in cash, which may be adjusted based on other 
contractual terms. In addition, we sold to FUJIFILM 
$41.8 million of raw materials that were remaining at 
the Hillerød facility on the closing date of this 
transaction.

Samsung Bioepis

In December 2019 we completed a transaction 

with Samsung Bioepis and secured the exclusive 
rights to commercialize two potential ophthalmology 
biosimilar products, SB11 referencing LUCENTIS and 
SB15 referencing EYLEA, in major markets worldwide, 
including the U.S., Canada, Europe, Japan and 
Australia. We also acquired an option to extend our 
existing commercial agreement with Samsung Bioepis 
for BENEPALI, IMRALDI and FLIXABI in Europe and 
obtained exclusive rights to commercialize these 
products in China. In connection with this transaction, 
we made an upfront payment of $100.0 million to 
Samsung Bioepis.

BIIB080 Option Exercise

In December 2019 we exercised our option with 

Ionis and obtained a worldwide, exclusive, royalty-
bearing license to develop and commercialize 
BIIB080, an investigational treatment for AD.

Pfizer Inc.

In January 2020 we entered into an agreement 

to acquire PF-05251749, a novel CNS-penetrant small 
molecule inhibitor of CK1, for the potential treatment 
of patients with behavioral and neurological symptoms 
across various psychiatric and neurological diseases 
from Pfizer. In particular, we plan to develop the Phase 
1 asset for the treatment of sundowning in AD and 
ISWRD in Parkinson’s disease. This transaction is 
subject to customary closing conditions, including the 
expiration of the applicable waiting period under the 
Hart-Scott-Rodino Antitrust Improvements Act of 1976 
in the U.S. We expect this transaction to close in the 
first quarter of 2020.

Other Key Developments

VUMERITY

In October 2019 the FDA approved VUMERITY for 
the treatment of RMS. Under the terms of the license 
and collaboration agreement with Alkermes, we made 
milestone payments totaling $155.0 million to 
Alkermes following the FDA's approval of VUMERITY. 
In November 2019 VUMERITY became available in the 
U.S.

Aducanumab

In October 2019 we and our collaboration 
partner Eisai announced that we plan to pursue 
regulatory approval for aducanumab in the U.S. and 
that the Phase 3 EMERGE study met its primary 
endpoint showing a significant reduction in clinical 
decline. We believe that results from a subset of 
patients in the Phase 3 ENGAGE study who received 
sufficient exposure to high dose aducanumab support 
findings from EMERGE. The decision to file is based 
on a new analysis, conducted in consultation with the 
FDA, of a larger dataset from the Phase 3 EMERGE 
and ENGAGE trials that were discontinued in March 
2019 following a futility analysis.

For additional information on our plans to file for 
regulatory approval for aducanumab, please read the 

Results of Operations

Revenues

Revenues are summarized as follows:

subsection entitled "Financial Condition, Liquidity and 
Capital Resources" included below.

Elenbecestat

In September 2019 we and our collaboration 

partner Eisai announced the decision to discontinue 
the global Phase 3 studies (MISSION AD1 and 
MISSION AD2) of the investigational oral BACE 
inhibitor elenbecestat in patients with early AD.

2019 Share Repurchase Programs

In March 2019 our Board of Directors authorized 
our March 2019 Share Repurchase Program, which is 
a program to repurchase up to $5.0 billion of our 
common stock. Our March 2019 Share Repurchase 
Program does not have an expiration date. All share 
repurchases under our March 2019 Share 
Repurchase Program will be retired.

In December 2019 our Board of Directors 
authorized our December 2019 Share Repurchase 
Program, which is a program to repurchase up to $5.0 
billion of our common stock. Our December 2019 
Share Repurchase Program does not have an 
expiration date. All share repurchases under our 
December 2019 Share Repurchase Program will be 
retired.

(In millions, except percentages)
Product revenues, net:

United States
Rest of world

Total product revenues, net
Revenues from anti-CD20 therapeutic
programs
Other revenues

Total revenues

For the Years Ended
December 31,

2019

2018

2017

% Change

2019
compared to
2018

2018
compared to
2017

$

6,713.8 $
4,666.0
11,379.8

6,800.5 $
4,086.3
10,886.8

7,017.1
3,337.6
10,354.7

2,290.4
707.7

1,559.2
360.0
$ 14,377.9 $ 13,452.9 $ 12,273.9

1,980.2
585.9

(1.3)%
14.2 %
4.5 %

15.7 %
20.8 %
6.9 %

(3.1)%
22.4 %
5.1 %

27.0 %
62.8 %
9.6 %

59

 
 
Product Revenues

Product revenues are summarized as follows:

(In millions, except percentages)
Multiple Sclerosis (MS):

TECFIDERA
Interferon*
TYSABRI
VUMERITY
FAMPYRA
ZINBRYTA

Subtotal: MS product revenues

Spinal Muscular Atrophy:

SPINRAZA

Biosimilars:
BENEPALI
IMRALDI
FLIXABI

Subtotal: Biosimilar product
revenues

Other:

FUMADERM

Hemophilia:
ELOCTATE
ALPROLIX

Subtotal: Hemophilia product
revenues

For the Years Ended
December 31,

2019

2018

2017

% Change

2019 compared
to 2018

2018 compared
to 2017

$

4,432.7 $
2,101.8
1,892.2
5.5
97.1
—
8,529.3

4,274.1 $
2,363.0
1,864.0
—
92.7
1.4
8,595.2

4,214.0
2,645.8
1,973.1
—
91.6
52.7
8,977.2

3.7 %
(11.1)%
1.5 %
**
4.7 %
(100.0)%
(0.8)%

1.4 %
(10.7)%
(5.5)%
**
1.2 %
(97.3)%
(4.3)%

2,097.0

1,724.2

883.7

21.6 %

95.1 %

486.2
184.0
68.1

738.3

485.2
16.7
43.2

545.1

370.8
—
9.0

379.8

0.2 %
1,001.8 %
57.6 %

30.9 %
**
380.0 %

35.4 %

43.5 %

15.2

22.3

39.6

(31.8)%

(43.7)%

—
—

—

—
—

—

48.4
26.0

74.4

**
**

**

**
**

**

Total product revenues, net

$ 11,379.8 $ 10,886.8 $ 10,354.7

4.5 %

5.1 %

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

60

 
 
Multiple Sclerosis

TECFIDERA

is expected to have an adverse impact on our 
TECFIDERA sales and our results of operations. For 
additional information, please read Note 20, Litigation, 
to our consolidated financial statements included in 
this report.

We anticipate an increase in TECFIDERA demand 

in rest of world in 2020, compared to 2019, 
notwithstanding the increasing competition from 
additional treatments for MS. We expect volume 
growth in our rest of world markets to offset volume 
declines in the U.S.

Interferon

AVONEX and PLEGRIDY

For 2019 compared to 2018, the 1.6% increase 

in U.S. TECFIDERA revenues was primarily due to a 
slight net price increase, offset by a small decrease in 
unit sales volume. 

For 2019 compared to 2018, the 10.3% increase 

in rest of world TECFIDERA revenues was primarily 
due to increases in unit sales volume of 14%, 
primarily related to our European and Japanese 
markets, and the favorable impact of foreign currency 
exchange of $16.5 million, partially offset by pricing 
reductions in certain European countries.

In February 2020 the U.S. Patent Trial and 
Appeal Board (PTAB) decided that our U.S. Patent No. 
8,399,514 (the ‘514 Patent) is patentable. The ‘514 
Patent covers treatment of MS with 480 mg of 
dimethyl fumarate per day as provided for in our 
TECFIDERA label. This decision may be appealed. 

The ‘514 Patent has also been challenged 
pursuant to the Hatch-Waxman Act in the U.S. District 
Courts of Delaware (the Delaware action) and West 
Virginia (the West Virginia action). We are awaiting a 
decision in the Delaware action and the trial in the 
West Virginia action is ongoing. If we receive an 
adverse judgment in either U.S. District Court action, 
we will appeal but we may face generic competition 
while our appeal is pending. 

We will face TECFIDERA generic competition if an 

adverse PTAB or U.S. District Court decision is 
reached on appeal. In addition, we have entered into 
settlement agreements with some of the defendants 
in the Delaware action and we now anticipate 
TECFIDERA generic competition before the ‘514 
Patent expires in February 2028. Generic competition 

61

For 2019 compared to 2018, the 14.5% 
decrease in U.S. Interferon revenues was primarily 
due to a decrease in Interferon unit sales volumes of 
13%, which was primarily attributable to patients 
transitioning to other MS therapies and a net price 
decrease. 

For 2019 compared to 2018, the 2.8% decrease 
in rest of world Interferon revenues was primarily due 
to pricing reductions in certain European countries. 

We expect that Interferon revenues will continue 
to decline in both the U.S. and rest of world markets 
in 2020, compared to 2019, as a result of increasing 
competition from our other MS products as well as 
other treatments for MS, including biosimilars, and 
pricing reductions in certain European markets.

AVONEX

For 2019, 2018 and 2017 U.S. AVONEX 
revenues totaled $1,202.1 million, $1,420.2 million 
and $1,593.6 million, respectively.

For 2019, 2018 and 2017 rest of world AVONEX 

Spinal Muscular Atrophy

revenues totaled $463.8 million, $495.3 million and 
$557.9 million, respectively.

SPINRAZA

PLEGRIDY

For 2019, 2018 and 2017 U.S. PLEGRIDY 
revenues totaled $224.5 million, $248.1 million and 
$295.5 million, respectively.

For 2019, 2018 and 2017 rest of world 
PLEGRIDY revenues totaled $211.4 million, $199.4 
million and $198.8 million, respectively.

TYSABRI

For 2019 compared to 2018, the 1.6% increase 

in U.S. TYSABRI revenues was primarily due to price 
increases, partially offset by a decrease in unit sales 
volumes of 4%. 

For 2019 compared to 2018, the 1.4% increase 

in rest of world TYSABRI revenues was primarily due 
to an increase in unit sales volumes of 3%.

We anticipate TYSABRI demand to be stable on 

a global basis in 2020, compared to 2019, with 
expected volume declines in the U.S. due to 
increasing competition from additional treatments for 
MS, including OCREVUS, offset by volume growth in 
our rest of world markets, net of price reductions in 
certain rest of world countries.

For 2019 compared to 2018, the 9.3% increase 

in U.S. SPINRAZA revenues was primarily due to 
increases in unit sales volume of 9%.

For 2019 compared to 2018, the 33.7% 
increase in rest of world SPINRAZA revenues was 
primarily due to an increase in unit sales volumes of 
69%, partially offset by the unfavorable impact of 
foreign currency exchange of $43.5 million.

We expect that the rate at which SPINRAZA 
revenues will grow will moderate in 2020, compared 
to 2019, primarily due to a lower rate of new patient 
starts combined with the impact of loading dose 
dynamics as patients transition to dosing once every 
four months.

We face competition from a new gene therapy 
product that was approved in the U.S. in May 2019 
for the treatment of SMA. Additionally, we are aware of 
other products in development that, if successfully 
developed and approved, may compete with SPINRAZA 
in the SMA market, including potential oral products. 
Future sales of SPINRAZA may be adversely affected 
by the commercialization of competing products. 

For additional information on our collaboration 

arrangements with Ionis, please read Note 18, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

62

Biosimilars

BENEPALI, IMRALDI and FLIXABI

Revenues from Anti-CD20 Therapeutic 
Programs

Genentech Inc. (Roche Group)

Our share of RITUXAN, including RITUXAN 
HYCELA, and GAZYVA collaboration operating profits in 
the U.S. and other revenues from anti-CD20 
therapeutic programs are summarized in the table 
below. For purposes of this discussion we refer to 
RITUXAN and RITUXAN HYCELA collectively as 
RITUXAN.

For 2019 compared to 2018, the 35.4% 
increase in biosimilar revenues was primarily due to 
the launch of IMRALDI in the fourth quarter of 2018, 
partially offset by the unfavorable impact of foreign 
currency exchange of $27.8 million.

In 2020 we expect strong revenue growth for our 
biosimilars business, primarily driven by the continued 
launch of IMRALDI in Europe, partially offset by price 
reductions in certain European countries.

In December 2019 we completed a transaction 

with Samsung Bioepis and secured the exclusive 
rights to commercialize two potential ophthalmology 
biosimilars, SB11 referencing LUCENTIS and SB15 
referencing EYLEA, in major markets worldwide, 
including the U.S., Canada, Europe, Japan and 
Australia. We also acquired an option to extend our 
existing commercial agreement with Samsung Bioepis 
for BENEPALI, IMRALDI and FLIXABI in Europe and 
obtained exclusive rights to commercialize these 
products in China.

For additional information on our collaboration 

arrangements with Samsung Bioepis, please read 
Note 18, Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

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

RITUXAN and GAZYVA

The following table provides a summary of 
amounts comprising our share of pre-tax profits in the 
U.S. for RITUXAN and GAZYVA:

(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,

2019

2018

2017

$4,747.4 $4,484.3 $4,206.9

622.7

669.6

755.2

$4,124.7 $3,814.7 $3,451.7

$1,542.4 $1,431.9 $1,316.4

Our share of RITUXAN annual pre-tax co-

promotion profits in the U.S. in excess of $50.0 
million decreased to 37.5% from 39% in the third 
quarter of 2017 as gross sales of GAZYVA in the U.S. 

63

 
 
for the preceding 12-month period exceeded $150.0 
million.

For 2019 compared to 2018, the increase in 

U.S. product revenues, net was primarily due to 
increased net sales of RITUXAN in the U.S. of 5.0%, 
which reflects an increase in unit sales volume of 3%, 
and selling price increases, partially offset by higher 
rates in discounts and allowances.

The increase in U.S. product revenues, net over 
2018 also reflects an increase in GAZYVA unit sales 
volume of 21%.

For 2019 compared to 2018, the decrease in 
collaboration costs and expenses was primarily due to 
lower cost of sales and lower selling and marketing 
costs on RITUXAN and lower Branded Pharmaceutical 
Drug fee expenses for RITUXAN and GAZYVA.

We are aware of anti-CD20 molecules, including 

biosimilar products, in development that if 
successfully developed and approved, could compete 
with RITUXAN and GAZYVA in the oncology market. 
The introduction of a biosimilar product can result in a 
significant reduction in net sales for the relevant 
product, as other manufacturers typically offer their 
versions at lower prices. In November 2019 and 
January 2020 biosimilar products referencing 
RITUXAN were launched in the U.S. and this could 
adversely affect the pre-tax profits of our collaboration 
arrangements with Genentech, which could, in turn, 
adversely affect our co-promotion profits in the U.S. in 
future years.

Other Revenues from Anti-CD20 Therapeutic 

Programs

Other revenues from anti-CD20 therapeutic 
programs consist of royalty revenues on sales of 
OCREVUS and our share of pre-tax co-promotion 
profits from RITUXAN in Canada. 

For 2019 compared to 2018, the increase in 

other revenues from anti-CD20 therapeutic programs 
was primarily due to the sales growth of OCREVUS. 
Royalty revenues recognized on sales of OCREVUS for 
the years ended December 31, 2019, 2018 and 
2017, totaled $687.5 million, $478.3 million and 
$159.3 million, respectively.

OCREVUS royalty revenues are based on our 

estimates from third party and market research data 
of OCREVUS sales occurring during the corresponding 
period. Differences between actual and estimated 
royalty revenues will be adjusted for in the period in 
which they become known, which is expected to be 
the following quarter.

In March 2017 the FDA approved OCREVUS for 

the treatment of RMS and PPMS. Pursuant to the 
terms of our collaboration arrangements with 
Genentech, we receive a tiered royalty on U.S. net 
sales from 13.5% and increasing up to 24% if annual 
net sales exceed $900.0 million. There will be a 50% 
reduction to these royalties if a biosimilar to 
OCREVUS is approved in the U.S.

In addition, we receive a gross 3% royalty on net 

sales of OCREVUS outside the U.S., with the royalty 
period lasting 11 years from the first commercial sale 
of OCREVUS on a country-by-country basis. OCREVUS 
has been approved for the treatment of RMS and 
PPMS in the E.U. and certain other countries. 

The commercialization of OCREVUS does not 

impact the percentage of the co-promotion profits we 
receive for RITUXAN or GAZYVA. Genentech is solely 
responsible for development and commercialization of 
OCREVUS and funding future costs. Genentech cannot 
develop OCREVUS in CLL, non-Hodgkin's lymphoma or 
rheumatoid arthritis. 

For additional information on our relationship 
with Genentech, including information regarding the 
pre-tax profit-sharing formula and its impact on future 
revenues from anti-CD20 therapeutic programs, 
please read Note 18, Collaborative and Other 
Relationships, to our consolidated financial 
statements included in this report.

Other Revenues

Other revenues are summarized as follows:

(In millions, except percentages)
Revenues from collaborative and other
relationships
Other royalty and corporate revenues
Total other revenues

For The Years 
Ended December 31,

2019

2018

2017

% Change

2019
compared to
2018

2018
compared to
2017

$

$

106.2 $
601.5
707.7 $

87.8 $

498.1
585.9 $

36.5
323.5
360.0

21.0%
20.8%
20.8%

140.5%
54.0%
62.8%

64

Revenues from Collaborative and Other 

Relationships

Revenues from collaborative and other 
relationships primarily include revenues from our 
technical development services and manufacturing 
agreements with Samsung Bioepis and royalty 
revenues on biosimilar products from Samsung 
Bioepis. 

Following the divestiture of our Hillerød, 
Denmark manufacturing operations in August 2019, 
FUJIFILM assumed responsibility for the manufacture 
of clinical and commercial quantities of bulk drug 
substance of biosimilar products for Samsung 
Bioepis. We no longer recognize revenues for the 
manufacturing completed after the divestiture date 
under our technical development services and 
manufacturing agreements with Samsung Bioepis.

For the years ended December 31, 2019 and 

2018, we recognized $106.2 million and $96.4 
million, respectively, related to the services described 
above provided to Samsung Bioepis.

For additional information on our collaborative 

and other relationships, including revenues recognized 
under our technical development services and 
manufacturing agreements with Samsung Bioepis, 
please read Note 18, Collaborative and Other 
Relationships, to our consolidated financial 
statements included in this report.

Other Royalty and Corporate Revenues

For 2019 compared to 2018, the increase in 
other royalty and corporate revenues was primarily 
due to $383.2 million in revenues recognized in 2019 
under the manufacturing and supply agreement with 
Bioverativ entered into in connection with the spin-off 
of our hemophilia business, compared to $206.7 
million recognized in 2018. The increase in Bioverativ 
revenues in 2019 over the prior year period was due 
to our sales in 2019 of hemophilia-related inventory 
on hand as of December 31, 2018. The increase in 
corporate revenues was partially offset by the 
reduction in royalty revenues due to the expiration of 
certain of our patents and a reduction in revenues 
from contract manufacturing agreements, other than 
Bioverativ, as discussed above.

Reserves for Discounts and Allowances

Revenues from product sales are recorded net 
of reserves established for applicable discounts and 
allowances, including those associated with the 
implementation of pricing actions in certain 
international markets where we operate.

These reserves are based on estimates of the 

amounts earned or to be claimed on the related sales 
and are classified as reductions of accounts 
receivable (if the amount is payable to our customer) 
or a liability (if the amount is payable to a party other 
than our customer). These estimates reflect 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. 

We receive royalties from net sales on products 

related to patents that we have out-licensed and we 
record other corporate revenues primarily from 
amounts earned under contract manufacturing 
agreements.

65

Reserves for discounts, contractual adjustments 

Contractual Adjustments

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

For the years ended December 31, 2019, 2018 
and 2017, reserves for discounts and allowances as 
a percentage of gross product revenues were 24.3%, 
23.7% and 22.0%, respectively.

Discounts

Discounts include trade term discounts and 

wholesaler incentives. 

For 2019 compared to 2018, discounts were 

relatively consistent.

Contractual adjustments primarily relate to 
Medicaid and managed care rebates, co-payment 
assistance (copay), VA and PHS discounts, specialty 
pharmacy program fees and other government rebates 
or applicable allowances. 

For 2019 compared to 2018, the increase in 

contractual adjustments was primarily due to higher 
managed care rebates and governmental rebates in 
the U.S. as well as higher governmental rebates and 
allowances in the rest of world, due in part to an 
increase in SPINRAZA sales volumes worldwide.

Returns

Product return reserves are established for 
returns made by wholesalers. In accordance with 
contractual terms, wholesalers are permitted to return 
product for reasons such as damaged or expired 
product. The majority of wholesaler returns are due to 
product expiration. Provisions for product returns are 
recognized in the period the related revenue is 
recognized, resulting in a reduction to product sales. 

For 2019 compared to 2018, return reserves 

were relatively consistent. 

For additional information on our revenue 
reserves, please read Note 4, Revenues, to our 
consolidated financial statements included in this 
report.

66

Cost and Expenses

A summary of total cost and expenses is as follows:

(In millions, except percentages)
Cost of sales, excluding amortization and
impairment of acquired intangible assets $
Research and development
Selling, general and administrative
Amortization and impairment of acquired
intangible assets
Collaboration profit (loss) sharing
Loss on divestiture of Hillerød, Denmark
manufacturing operations
(Gain) loss on fair value remeasurement
of contingent consideration
Acquired in-process research and
development
Restructuring charges

Total cost and expenses

$

For the Years Ended
December 31,

2019

2018

2017

% Change

2019
compared to
2018

2018
compared to
2017

1,955.4 $
2,280.6
2,374.7

1,816.3 $
2,597.2
2,106.3

1,630.0
2,253.6
1,933.9

489.9
241.6

55.3

747.3
185.0

—

814.7
112.3

7.7 %
(12.2)%
12.7 %

(34.4)%
30.6 %

11.4 %
15.2 %
8.9 %

(8.3)%
64.7 %

—

**

**

(63.7)

(12.3)

62.7

417.9 %

(119.6)%

—
1.5
7,335.3 $

112.5
12.0
7,564.3 $

120.0
0.9
6,928.1

(100.0)%
(87.5)%
(3.0)%

(6.3)%
**
9.2 %

** Percentage not meaningful.

entered into in connection with the spin-off of our 
hemophilia business.

Additionally, the increase in product cost of 
sales was attributable to an increase in sales of 
products within our biosimilar business and an 
increase in inventory amounts written down as a 
result of excess, obsolescence, unmarketability or 
other reasons, partially offset by lower cost of sales 
from our contract manufacturing agreements, except 
Bioverativ, as discussed above. 

Inventory amounts written down as a result of 

excess, obsolescence, unmarketability or other 
reasons totaled $52.2 million, $41.9 million and 
$76.9 million for the years ended December 31, 
2019, 2018 and 2017, respectively. 

Royalty Cost of Sales

For 2019 compared to 2018, the decrease in 

royalty cost of sales was primarily due to a decrease 
in royalties payable on sales of TYSABRI resulting 
from the expiration of certain third party royalties, 
partially offset by increased royalties payable on 
higher sales of SPINRAZA and IMRALDI.

Cost of Sales, Excluding Amortization and 
Impairment of Acquired Intangible Assets (Cost of 
Sales)

Cost of sales, as a percentage of total revenues, 
were 13.6%, 13.5% and 13.3% for the years ended 
December 31, 2019, 2018 and 2017, respectively.

Product Cost of Sales

For 2019 compared to 2018, the increase in 

product cost of sales was primarily due to our sale in 
2019 to Bioverativ of hemophilia-related inventory on 
hand as of December 31, 2018, with a cost basis 
totaling $184.5 million pursuant to the terms of the 
manufacturing and supply agreement with Bioverativ 

67

 
 
Research and Development

We support our drug discovery and development 

efforts through the commitment of significant 
resources to discovery, research and development 
programs and business development opportunities. 

A significant amount of our research and 
development costs consist of indirect costs incurred 
in support of overall research and development 
activities and non-specific programs, including 
activities that benefit multiple programs, such as 
management costs, as well as depreciation, 
information technology and facility-based expenses. 
These costs are considered other research and 
development costs in the table above and are not 
allocated to a specific program or stage.

Research and development expense incurred in 

support of our marketed products includes costs 
associated with product lifecycle management 
activities including, if applicable, costs associated 
with the development of new indications for existing 
products. Late stage programs are programs in Phase 
3 development or in registration stage. Early stage 
programs are programs in Phase 1 or Phase 2 
development. Research and discovery represents 
costs incurred to support our discovery research and 
translational science efforts. Costs are reflected in 
the development stage based upon the program 
status when incurred. Therefore, the same program 
could be reflected in different development stages in 
the same year. For several of our programs, the 
research and development activities are part of our 
collaborative and other relationships. Our costs reflect 
our share of the total costs incurred.

68

For 2019 compared to 2018, the decrease in 

Early Stage Programs

research and development expense was primarily due 
to a decrease in milestone and upfront expenses and 
a decrease in other research and development costs. 
These decreases were partially offset by increases in 
costs incurred in connection with our early stage 
programs and marketed products.

We intend to continue committing significant 
resources to targeted research and development 
opportunities where there is a significant unmet need 
and where a drug candidate has the potential to be 
highly differentiated.

Milestone and Upfront Expenses

Research and development expense for 2019 

includes:

•  $63.0 million charge to research and 

development expense upon the completion of a 
transaction with Samsung Bioepis to secure the 
exclusive rights to commercialize two potential 
ophthalmology biosimilar products;

•  $45.0 million charge to research and 

development expense upon the exercise of our 
option to obtain a worldwide, exclusive, royalty-
bearing license from Ionis to develop and 
commercialize BIIB080; and

•  $46.5 million charge to research and 

development expense consisting of a $38.5 
million charge upon the entering into a 
collaboration and research and development 
services agreement with Skyhawk and an 
approximately $8.0 million charge upon 
entering into an amendment to this agreement 
to add an additional discovery program.

Research and development expense for 2018 

includes:

•  $486.2 million net charge to research and 

development expense upon the closing of the 
2018 Ionis Agreement; and

•  $35.0 million charge to research and 

development expense upon the exercise of our 
option to obtain a worldwide, exclusive, royalty-
bearing license from Ionis to develop and 
commercialize tofersen in ALS.

These payments are classified as research and 
development expense as the programs they relate to 
had not achieved regulatory approval as of the 
payment date.

For additional information about these 
collaboration arrangements, please read Note 18, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

69

For 2019 compared to 2018, the increase in 
spending related to our early stage programs was 
primarily due to an increase in costs associated with:

•  gosuranemab in PSP and AD pursuant to our 

license agreement with BMS;

•  cinpanemab in Parkinson's disease;

•  BIIB112 in XLRP;

•  BIIB104 in CIAS; 

•  BIIB078 (IONIS-C9Rx) in ALS; 

•  BIIB091 in MS;

•  BIIB110 (ActRIIA/B ligand trap) in SMA; and

•  our decision in September 2019 to discontinue 

the Phase 2b study of BG00011 for the 
potential treatment of IPF, for which we incurred 
a one-time close out charge of approximately 
$10.0 million.

These increases were partially offset by a 

decrease in costs associated with:

• 

• 

the development of vixotrigine (BIIB074) in 
trigeminal neuralgia (TGN);

tofersen in ALS, which was advanced to a late 
stage program in the first quarter of 2019;

•  our decision in December 2018 to discontinue 
development of BIIB087, an investigational AAV-
based gene therapy for the potential treatment 
of X-linked retinoschisis, and BIIB088, an 
investigational AAV-based gene therapy for the 
potential treatment of XLRP, upon the 
termination of our collaboration agreement with 
Applied Genetic Technologies Corporation; and

•  BIIB093 in LHI, which was advanced to a late 
stage program in the third quarter of 2018.

Late Stage Programs

For 2019 compared to 2018, the decrease in 
spending associated with our late stage programs 
was primarily due to a decrease in spending related to 
the discontinuation of the global Phase 3 trials, 
ENGAGE and EMERGE, of aducanumab, net of Eisai 
reimbursement. This decrease was partially offset by 
increases in spending related to:

•  our share of the termination costs of 

approximately $48.0 million resulting from the 
decision to discontinue the global Phase 3 
studies of elenbecestat in AD;

•  BAN2401 in early AD pursuant to our 

collaboration arrangement with Eisai, which was 
advanced to a late stage program in the first 
quarter of 2019;

• 

tofersen in ALS, which was advanced to a late 
stage program in the first quarter of 2019; 

and other programs acquired through business 
combinations. 

•  BIIB093 in LHI, which was advanced to a late 

stage program in the third quarter of 2018; and

•  BIIB111 in CHM.

Selling, General and Administrative

For 2019 compared to 2018, the increase in 
selling, general and administrative expenses was 
primarily due to increased commercial and medical 
investments as well as the timing of spend on selling, 
general and administrative expense.

In 2020 we expect selling, general and 

administrative costs, including increases in headcount 
and other commercial infrastructure, to significantly 
increase as we support pre-launch activities 
associated with the potential regulatory approval of 
aducanumab.

Amortization and Impairment of Acquired Intangible 

Assets

Our amortization expense is based on the 
economic consumption and impairment of intangible 
assets. Our most significant intangible assets are 
related to our TYSABRI, AVONEX, SPINRAZA, 
VUMERITY and TECFIDERA (rest of world) products 

Amortization and impairment of acquired 
intangible assets for the year ended December 31, 
2019, was impacted by the 2019 impairment charges 
of $215.9 million related to certain IPR&D assets 
associated with the Phase 2b study of BG00011 for 
the potential treatment of IPF, which was discontinued 
in the third quarter of 2019. 

Amortization and impairment of acquired 
intangible assets for the year ended December 31, 
2018, was impacted by the 2018 impairment charges 
of $189.3 million related to certain IPR&D assets 
associated with our vixotrigine program and $176.8 
million related to our intangible assets associated 
with our U.S. license to Forward Pharma's intellectual 
property, including Forward Pharma's intellectual 
property related to TECFIDERA. 

Amortization of acquired intangible assets, 
excluding impairment charges, totaled $274.0 million, 
$381.2 million and $455.3 million for the years 
ended December 31, 2019, 2018 and 2017, 
respectively.

For 2019 compared to 2018, the decrease in 

amortization of acquired intangible assets, excluding 
impairment charges, was primarily due to a lower rate 
of amortization for acquired intangible assets, 
primarily due to prior year impairments.

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 products. The 
occurrence of an adverse event could substantially 
increase the amount of amortization expense related 
to 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.

IPR&D related to Business Combinations

IPR&D represents the fair value assigned to 
research and development assets that we acquired as 
part of a business combination and had not yet 
reached technological feasibility at the date of 
acquisition. We review amounts capitalized as 
acquired IPR&D for impairment annually, as of October 
31, and whenever events or changes in 
circumstances indicate to us that the carrying value of 
the assets might not be recoverable.

BG00011

70

During the third quarter of 2019 we 

discontinued the Phase 2b study of BG00011 for the 
potential treatment of IPF due to safety concerns. As 
a result, we recognized an impairment charge of 
approximately $215.9 million during the third quarter 
of 2019 to reduce the fair value of the IPR&D 
intangible asset to zero. We also adjusted the value 
of our contingent consideration obligations related to 
this asset resulting in a gain of $61.2 million in the 
third quarter of 2019.

Vixotrigine

During the third quarter of 2018 we completed a 

Phase 2b study of vixotrigine for the potential 
treatment of painful lumbosacral radiculopathy 
(PLSR). The study did not meet its primary or 
secondary efficacy endpoints and we discontinued 
development of vixotrigine for the potential treatment 
of PLSR. As a result, we recognized an impairment 
charge of approximately $60.0 million during the third 
quarter of 2018 to reduce the fair value of the related 
IPR&D intangible asset to zero. 

In addition, we delayed the initiation of the 

Phase 3 studies of vixotrigine for the potential 
treatment of TGN as we awaited the outcome of 
ongoing interactions with the FDA regarding the design 
of the Phase 3 studies, a more detailed review of the 
data from the Phase 2b study of vixotrigine for the 
potential treatment of PLSR and insights from the 
Phase 2 study of vixotrigine for the potential 
treatment of small fiber neuropathy. We reassessed 
the fair value of the TGN program using reduced 
expected lifetime revenues, higher expected clinical 
development costs and lower cumulative probability of 
success. As a result of that reassessment, we 
recognized an impairment charge of $129.3 million 
during the third quarter of 2018 to reduce the fair 
value of the TGN IPR&D intangible asset to $41.8 
million. 

The TGN program has experienced numerous 

delays in development in the periods since we 
acquired the program and the fair value of this asset 
is not significantly in excess of carrying value. In 
addition, we are currently testing vixotrigine in another 
mid-stage clinical trial, in a different neuropathic pain 
indication, for which we also have an IPR&D asset. 
Data from that trial is expected in the first half of 
2020. This data may affect the economic value of 
vixotrigine and the IPR&D assets for one or both 
programs could be impaired if assumptions used in 
determining their fair value change.

Overall, the value of our acquired IPR&D assets 

is dependent upon several variables, including 
estimates of future revenues and the effects of 
competition, our ability to secure sufficient pricing in a 
competitive market, our ability to confirm safety and 

71

efficacy based on data from clinical trials and 
regulatory feedback, the level of anticipated 
development costs and the probability and timing of 
successfully advancing a particular research program 
from one clinical trial phase to the next. We are 
continually reevaluating our estimates concerning 
these and other variables, including our life cycle 
management strategies, research and development 
priorities and development risk, changes in program 
and portfolio economics and related impact of foreign 
currency exchange rates and economic trends and 
evaluating industry and company data regarding the 
productivity of clinical research and the development 
process. Changes in our estimates and prioritization 
of these programs may result in a significant change 
to our valuation of our IPR&D assets.

TECFIDERA License Rights

In January 2017 we entered into a settlement 

and license agreement among Biogen Swiss 
Manufacturing GmbH, Biogen International Holding 
Ltd., Forward Pharma and certain related parties, 
which was effective as of February 1, 2017. Pursuant 
to this agreement, we obtained U.S. and rest of world 
licenses to Forward Pharma's intellectual property, 
including Forward Pharma's intellectual property 
related to TECFIDERA. In exchange, we paid Forward 
Pharma $1.25 billion in cash, of which $795.2 million 
was recorded within intangible assets in the first 
quarter of 2017. 

We had an intellectual property dispute with 

Forward Pharma in the U.S. concerning intellectual 
property related to TECFIDERA. 

In March 2017 the U.S. intellectual property 
dispute was decided in our favor. Forward Pharma 
appealed to the U.S. Court of Appeals for the Federal 
Circuit. We evaluated the recoverability of the U.S. 
asset acquired from Forward Pharma and recorded a 
$328.2 million impairment charge in the first quarter 
of 2017 to adjust the carrying value of the acquired 
U.S. asset to fair value reflecting the impact of the 
developments in the U.S. legal dispute and continued 
to amortize the remaining net book value of the U.S. 
intangible asset in our consolidated statements of 
income utilizing an economic consumption model. The 
U.S. Court of Appeals for the Federal Circuit upheld 
the USPTO's March 2017 ruling and in January 2019 
denied Forward Pharma’s petition for rehearing. We 
evaluated the recoverability of the U.S. asset based 
upon these most recent developments and recorded a 
$176.8 million impairment charge in the fourth 
quarter of 2018 to reduce the remaining net book 
value of the U.S. asset to zero.

We have an intellectual property dispute with 
Forward Pharma in the E.U. concerning intellectual 
property related to TECFIDERA. 

In March 2018 the European Patent Office (EPO) 
revoked Forward Pharma’s European Patent No. 2 801 
355. Forward Pharma has filed an appeal to the 
Technical Boards of Appeal of the EPO and a hearing 
has been set for June 2020. Based upon our 
assessment of this ruling, we continue to amortize 
the remaining net book value of the rest of world 
intangible asset in our consolidated statements of 
income utilizing an economic consumption model. The 
remaining net book value of the TECFIDERA rest of 
world intangible asset as of December 31, 2019, was 
$36.1 million.

For additional information on the dispute with 
Forward Pharma in the E.U., please read Note 20, 
Litigation, to our consolidated financial statements 
included in this report.

For additional information on the amortization 

and impairment of acquired intangible assets, please 
read Note 6, Intangible Assets and Goodwill, to our 
consolidated financial statements included in this 
report.

Collaboration Profit (Loss) Sharing

Collaboration profit (loss) sharing primarily 
includes Samsung Bioepis' 50% share of the profit or 
loss related to our biosimilars commercial agreement 
with Samsung Bioepis.

For 2019, 2018 and 2017 we recognized a net 

profit-sharing expense of $241.6 million, $187.4 
million and $111.0 million, respectively, to reflect 
Samsung Bioepis’ 50% sharing of the net 
collaboration profits. The increases in profit-sharing 
expense for the comparative periods were primarily 
due to increased collaboration profits resulting from 
increased biosimilar sales.

For additional information on our collaboration 

arrangements with Samsung Bioepis, please read 
Note 18, Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

72

Loss on Divestiture of Hillerød, Denmark 

Manufacturing Operations

Divestiture of Hillerød, Denmark Manufacturing 

Operations

In August 2019 we completed the sale of all of 
the outstanding shares of our subsidiary that owned 
our biologics manufacturing operations in Hillerød, 
Denmark to FUJIFILM. Upon the closing of this 
transaction, we received approximately $881.9 million 
in cash, which may be adjusted based on other 
contractual terms, which are discussed below. We 
determined that the operations disposed of in this 
transaction did not meet the criteria to be classified 
as discontinued operations under the applicable 
guidance.

As part of this transaction, we have provided 

FUJIFILM with certain minimum batch production 
commitment guarantees. There is a risk that the 
minimum contractual batch production commitments 
will not be met. Based upon current estimates we 
expect to incur an adverse commitment obligation of 
approximately $74.0 million associated with such 
guarantees and have accrued for this obligation. We 
may adjust this estimate based upon changes in 
business conditions, which may result in the increase 
or reduction of this adverse commitment obligation in 
subsequent periods. We also may be obligated to 
indemnify FUJIFILM for liabilities that existed relating 
to certain business activities incurred prior to the 
closing of this transaction.

In addition, we may earn certain contingent 
payments based on future manufacturing activities at 
the Hillerød facility. For the disposition of a business, 
our policy is to recognize contingent consideration 
when the consideration is realizable. We currently 
believe the probability of earning these payments is 
remote and therefore we did not include these 
contingent payments in our calculation of the fair 
value of the operations. 

As part of this transaction, we entered into 
certain manufacturing services agreements with 
FUJIFILM pursuant to which FUJIFILM will use the 
Hillerød facility to produce commercial products for 
us, such as TYSABRI, as well as other third-party 
products.

In connection with this transaction, we 

recognized a total net loss of approximately $164.4 
million in our consolidated statements of income. This 
loss included a pre-tax loss of $95.5 million, which 
was recorded in loss on divestiture of Hillerød, 
Denmark manufacturing operations. The loss 
recognized was based on exchange rates and 
business conditions on the closing date of this 
transaction, and included costs to sell our Hillerød, 
Denmark manufacturing operations of approximately 
$11.2 million and our estimate of the fair value of an 
adverse commitment of approximately $114.0 million 
associated with the guarantee of future minimum 
batch production at the Hillerød facility. The value of 
this adverse commitment was determined using a 
probability-weighted estimate of future manufacturing 
activity. We also recorded a tax expense of $68.9 
million related to this transaction. During the fourth 
quarter of 2019 we recorded a $40.2 million 
reduction in our estimate of the future minimum batch 
commitment utilizing our current manufacturing 
forecast, which reflects the impact of forecasted 
aducanumab batches, resulting in a reduction in the 
pre-tax loss on divestiture from $95.5 million to 
$55.3 million.

Our estimate of the fair value of the adverse 
commitment is a Level 3 measurement and is based 
on forecasted batch production at the Hillerød facility.

For additional information on the divestiture of 

our Hillerød, Denmark manufacturing operations, 
please read Note 3, Divestitures, to our consolidated 
financial statements included in this report.

(Gain) Loss on Fair Value Remeasurement of 

Contingent Consideration

Consideration payable for certain of our 

business combinations includes future payments that 
are contingent upon the occurrence of a particular 
event or events. We record an obligation for such 
contingent consideration payments at fair value on 
the acquisition date. We then revalue our contingent 
consideration obligations each reporting period. 
Changes in the fair value of our contingent 
consideration obligations, other than changes due to 
payments, are recognized as a (gain) loss on fair 
value remeasurement of contingent consideration in 
our consolidated statements of income.

The gain on fair value remeasurement of 
contingent consideration for 2019 was primarily due 
to the discontinuation of the Phase 2b study of 
BG00011 for the potential treatment of IPF, partially 
offset by changes in the probability and expected 
timing of achievement of certain developmental 
milestones, a decrease in interest rates used to 
revalue our contingent consideration liabilities and the 
passage of time.

The gain on fair value remeasurement of 
contingent consideration for 2018 was primarily due 
to delays in the expected timing of achievement of 
milestones related to our vixotrigine program for the 
potential treatment of TGN and an increase in 
discount rates used to revalue our contingent 
consideration liabilities, partially offset by the 
passage of time. 

The loss on fair value remeasurement of 
contingent consideration for 2017 was primarily due 
to the increase in the probability of achieving certain 
developmental milestones based upon the 
progression of the underlying clinical programs.

For additional information on our IPR&D 
intangible assets related to our discontinued 
BG00011 program for the potential treatment of IPF 
and our vixotrigine program for the potential treatment 
of TGN, please read Note 6, Intangible Assets and 
Goodwill, to our consolidated financial statements 
included in this report.

73

Acquired In-Process Research and Development

recorded as acquired IPR&D in our consolidated 
statements of income as BIIB093 had not yet reached 
technological feasibility. 

For additional information on our acquisitions of 
BIIB110, BIIB104, BIIB100 and BIIB093, please read 
Note 2, Acquisitions, to our consolidated financial 
statements included in this report.

Other Income (Expense), Net

BIIB110 Acquisition

In July 2018 we acquired BIIB110 and ALG-802 
from AliveGen Inc. (AliveGen). BIIB110 and ALG-802 
represent novel ways of targeting the myostatin 
pathway. In connection with the closing of this 
transaction, we made an upfront payment of $27.5 
million to AliveGen, which was recorded as acquired 
IPR&D in our consolidated statements of income as 
BIIB110 has not yet reached technological feasibility.

BIIB104 Acquisition

In April 2018 we acquired BIIB104 from Pfizer. 
BIIB104 is a first-in-class, Phase 2b AMPA receptor 
potentiator for CIAS. In connection with the closing of 
this transaction, we made an upfront payment of 
$75.0 million to Pfizer, which was recorded as 
acquired IPR&D in our consolidated statements of 
income as BIIB104 has not yet reached technological 
feasibility.

BIIB100 Acquisition

In January 2018 we acquired BIIB100 from 
Kayropharm Therapeutics Inc. (Karyopharm). BIIB100 
is a Phase 1 investigational oral compound for the 
treatment of certain neurological and 
neurodegenerative diseases, primarily in ALS. In 
connection with the closing of this transaction, we 
made an upfront payment of $10.0 million to 
Karyopharm, which was recorded as acquired IPR&D 
in our consolidated statements of income as BIIB100 
has not yet reached technological feasibility.

BIIB093 Acquisition

In May 2017 we acquired BIIB093 from Remedy 
Pharmaceuticals Inc. (Remedy). In connection with the 
closing of this transaction, we made an upfront 
payment of $120.0 million to Remedy, which was 

Effective January 1, 2018, other income 
(expense) reflects the recognition of net gains 
(losses) recorded in relation to changes in the fair 
value of our strategic investments following our 
adoption of Accounting Standards Update (ASU) No. 
2016-01, Financial Instruments - Overall (Subtopic 
825-10): Recognition and Measurement of Financial 
Assets and Financial Liabilities. Prior to the adoption 
of this standard, we recognized changes in fair value 
of our strategic investment in accumulated other 
comprehensive income (loss), net. Changes in the fair 
value of our strategic investments could have a 
significant impact on our results of operations in any 
given period. 

For 2019 compared to 2018, the change in other 

income (expense), net primarily reflects net gains 
totaling $204.7 million recognized on our investments 
related to our holdings in equity and debt securities, 
compared to net gains totaling $119.5 million in 
2018. The net gains recognized during the year ended 
December 31, 2019, primarily reflect an increase in 
the fair value in our investment in Ionis common stock 
from December 31, 2018, partially offset by the net 
loss recognized on our sale of a portion of our 
investment in Ionis common stock during the second 
and third quarters of 2019 reflecting the decrease in 
the fair value of the shares sold from March 31, 
2019.

Proceeds from our sale of a portion of our 

investment in Ionis common stock during the year 
ended December 31, 2019, totaled approximately 

74

$382.0 million. The original cost basis upon 
acquisition in June 2018 for the shares sold during 
the year ended December 31, 2019, totaled 
approximately $312.5 million.

Net gains recognized on our investments related 

to our holdings in equity and debt securities for the 
year ended December 31, 2019, also reflects an 
increase in the fair value of an investment in a non-
marketable equity security from December 31, 2018, 
that was realized for a net gain of approximately 
$87.7 million upon sale in the second quarter of 
2019.

Income Tax Provision

January 1, 2018, at a higher effective tax rate than 
the 2018 statutory tax rate.

For additional information on the divestiture of 

our Hillerød, Denmark manufacturing operations, 
please read Note 3, Divestitures, to our consolidated 
financial statements included in this report.

Accounting for Uncertainty in Income Taxes

For additional information on our uncertain tax 

positions and income tax rate reconciliation for 2019, 
2018 and 2017, please read Note 16, Income Taxes, 
to our consolidated financial statements included in 
this report.

Equity in Loss of Investee, Net of Tax

Our effective tax rate fluctuates from year to 

year due to the global nature of our operations. The 
factors that most significantly impact our effective tax 
rate include changes in tax laws, variability in the 
allocation of our taxable earnings among multiple 
jurisdictions, the amount and characterization of our 
research and development expenses, the levels of 
certain deductions and credits, acquisitions and 
licensing transactions.

For the year ended December 31, 2019, as 
compared to 2018, the decrease in our effective tax 
rate was primarily due to the combination of the 
internal reorganization of certain intellectual property 
rights and the impact of Swiss Tax Reform. This 
decrease was partially offset by a $68.9 million tax 
expense related to the divestiture of our subsidiary 
that owned our Hillerød, Denmark manufacturing 
operations. We also had a higher effective tax rate in 
2018 resulting from the unfavorable effects of the 
2017 Tax Act and our sale of inventory, the tax effect 
of which had been included within prepaid taxes at 

75

In February 2012 we entered into a joint venture 

agreement with Samsung BioLogics, establishing an 
entity, Samsung Bioepis, to develop, manufacture and 
market biosimilar products.

In June 2018 we exercised our option under our 

joint venture agreement to increase our ownership 
percentage in Samsung Bioepis from approximately 
5% to approximately 49.9%. The share purchase 
transaction was completed in November 2018 and, 
upon closing, we paid 759.5 billion South Korean won 
($676.6 million) to Samsung BioLogics. As of 
December 31, 2019, our ownership percentage 
remained at approximately 49.9%

We recognize our share of the results of 
operations related to our investment in Samsung 
Bioepis under the equity method of accounting one 
quarter in arrears when the results of the entity 
become available, which is reflected as equity in 
income (loss) of investee, net of tax in our 
consolidated statements of income. During 2015, as 
our share of losses exceeded the carrying value of 
our investment, we suspended recognizing additional 
losses. In the first quarter of 2019 we restarted 
recognizing our share of Samsung Bioepis' income 
(losses), and we began recognizing amortization on 

certain basis differences resulting from our November 
2018 investment. 

Noncontrolling Interests, Net of Tax

Our joint venture partner, Samsung BioLogics, is 
currently subject to an ongoing criminal investigation 
that we continue to monitor. While this investigation 
could impact the operations of Samsung Bioepis and 
its business, we have assessed the value of our 
investment in Samsung Bioepis and continue to 
believe that the fair value of the investment is in 
excess of its net book value.

For the year ended December 31, 2019, equity 

in loss of investee, net of tax reflects our share of 
losses totaling $1.2 million and amortization of basis 
differences totaling $78.2 million. 

For additional information on our collaboration 

arrangements with Samsung Bioepis, please read 
Note 18, Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

For 2018 net income attributable to 
noncontrolling interests, net of tax, was primarily 
related to a $50.0 million pre-tax payment made to 
Neurimmune to reduce the previously negotiated 
royalty rates payable on products developed under the 
Neurimmune Agreement, including royalties payable 
on potential commercial sales of aducanumab, by 5%. 

For 2017 net income attributable to 
noncontrolling interests, net of tax, was primarily 
related to a $150.0 million pre-tax payment made to 
Neurimmune to reduce the previously negotiated 
royalty rates payable on products developed under the 
Neurimmune Agreement, including royalties payable 
on potential commercial sales of aducanumab, by 
15%.

For additional information on our collaboration 

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

76

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
Notes payable

Total borrowings

Working Capital:
Current assets
Current liabilities

Total working capital

** Percentage not meaningful.

As of December 31,

2019

2018

% Change

2019
compared to
2018

$

$

$

$

$

$

2,913.7 $
1,562.2
1,408.1
5,884.0 $

1,495.8 $
4,459.0
5,954.8 $

1,224.6
2,313.4
1,375.9
4,913.9

—
5,936.5
5,936.5

8,381.8 $
(4,863.8)
3,518.0 $

7,640.9
(3,295.2)
4,345.7

137.9 %
(32.5)%
2.3 %
19.7 %

**
(24.9)%
0.3 %

9.7 %
47.6 %
(19.0)%

For the year ended December 31, 2019, certain 

For the year ended December 31, 2018, certain 

significant cash flows were as follows:

significant cash flows were as follows:

•  $7.1 billion in net cash flows provided by 

•  $6.2 billion in net cash flows provided by 

operating activities, net of: 

operating activities, net of:

  $1.1 billion in total net payments for 

income taxes; and

  $74.0 million upfront payment made to 

Skyhawk upon entering into a collaboration 
and research and development services 
agreement; 

•  $5.9 billion used for share repurchases;

•  $923.7 million in proceeds received on the 

divestiture of our Hillerød, Denmark 
manufacturing operations, including the sale of 
raw materials that were remaining at the Hillerød 
facility on the closing date of this transaction;

•  $744.4 million payment made for our acquisition 

of NST, net of cash acquired;

•  $479.3 million in proceeds received on sales of 

strategic investments;

•  $514.5 million used for purchases of property, 

plant and equipment; 

•  $300.0 million for the final contingent payment 
made to former shareholders of Fumapharm AG 
and holders of their rights; and

•  $155.0 million in payments made to Alkermes 
following the FDA's approval of VUMERITY.

  $1.0 billion in total net payments for 

income taxes; and

  $375.0 million in an upfront payment 
made to Ionis upon the closing of the 
2018 Ionis Agreement and a $162.1 
million expense reflecting the premium 
paid for the purchase of Ionis common 
stock; 

•  $4.4 billion used for share repurchases;

•  $1.5 billion in contingent payments made to 
former shareholders of Fumapharm AG and 
holders of their rights;

•  $770.6 million used for purchases of property, 

plant and equipment;

•  $676.6 million payment made to Samsung 
BioLogics upon the closing of the share 
purchase transaction increasing our ownership 
percentage in Samsung Bioepis to approximately 
49.9%;

•  $462.9 million payment made to Ionis reflecting 

the fair value of the Ionis common stock 
purchased upon the closing the 2018 Ionis 
Agreement; and

•  $112.5 million in payments made for the 

acquisitions of BIIB100, BIIB104 and BIIB110.

77

 
Overview

We have historically financed our operating and 
capital expenditures primarily through cash flows 
earned through our operations. We expect our 
operating expenditures, particularly those related to 
research and development, clinical trials, 
commercialization of new products and international 
expansion to continue to grow. However, we expect to 
continue funding our current and planned operating 
requirements principally through our cash flows from 
operations, as well as our existing cash resources. 
We believe that our existing funds, when combined 
with cash generated from operations and our access 
to additional financing resources, if needed, are 
sufficient to satisfy our operating, working capital, 
strategic alliance, milestone payment, capital 
expenditure and debt service requirements for the 
foreseeable future. In addition, we may choose to 
opportunistically return cash to shareholders and 
pursue other business initiatives, including acquisition 
and licensing activities. We may, from time to time, 
also seek additional funding through a combination of 
new collaborative agreements, strategic alliances and 
additional equity and debt financings or from other 
sources should we identify a significant new 
opportunity.

Aducanumab

In October 2019 we and our collaboration 
partner Eisai announced that we plan to pursue 
regulatory approval for aducanumab in the U.S. We 
plan to actively commit funds to developing our 
commercialization program for aducanumab so that 
we would be in a position to launch aducanumab if we 
receive regulatory approval. If we do not receive 
regulatory approval or are unable to successfully 
commercialize aducanumab, our financial condition, 
business and operations may be adversely affected.

For additional information on certain risks that 

could negatively impact our financial position or future 
results of operations, please read Item 1A. Risk 
Factors and Item 7A. Quantitative and Qualitative 
Disclosures About Market Risk included in this report.

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, 
overnight reverse repurchase agreements 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. 

78

As of December 31, 2019, we had cash, cash 

equivalents and marketable securities totaling 
approximately $5.9 billion compared to approximately 
$4.9 billion as of December 31, 2018. The net 
increase in cash, cash equivalents and marketable 
securities at December 31, 2019, from December 31, 
2018, was primarily due to cash flows from 
operations, cash received upon the divestiture of our 
Hillerød, Denmark manufacturing operations, net 
proceeds from marketable securities and proceeds 
from sales of strategic investments, partially offset by 
cash used for share repurchases, cash used for our 
acquisition of NST, net purchases of property, plant 
and equipment, contingent payments made to former 
shareholders of Fumapharm AG and holders of their 
rights and upfront and milestone payments made to 
Alkermes and Skyhawk. 

Investments and other assets in our 

consolidated balance sheet as of December 31, 2019 
and 2018, includes the carrying value of our 
investment in Samsung Bioepis of $580.2 million and 
$680.6 million, respectively. As Samsung Bioepis is a 
privately-held entity, our ability to liquidate our 
investment in Samsung Bioepis may be limited and 
we may realize significantly less than the value of 
such investment. Investments in other assets, as of 
December 31, 2019 and 2018, also includes the fair 
value of our investment in Ionis common stock of 
$329.6 million and $563.8 million, respectively, which 
is subject to certain holding period restrictions.

For additional information on our acquisition of 

NST, please read Note 2, Acquisitions, to our 
consolidated financial statements included in this 
report. For additional information on the divestiture of 
our Hillerød, Denmark manufacturing operations, 
please read Note 3, Divestitures, to our consolidated 
financial statements included in this report. For 
additional information on our collaboration 
arrangements with Ionis, Samsung Bioepis, Alkermes 
and Skyhawk, please read Note 18, Collaborative and 
Other Relationships, to our consolidated financial 
statements included in this report.

Borrowings

The following is a summary of our principal 

indebtedness as of December 31, 2019:

•  $1.5 billion aggregate principal amount of 2.90% 

Senior Notes due September 15, 2020;

•  $1.0 billion aggregate principal amount of 

3.625% Senior Notes due September 15, 2022;

•  $1.75 billion aggregate principal amount of 

4.05% Senior Notes due September 15, 2025; 
and

•  $1.75 billion aggregate principal amount of 

5.20% Senior Notes due September 15, 2045.

These Senior Notes were issued at discount and 
are amortized as additional interest expense over the 
period from issuance through maturity.

For a summary of the fair values of our 

outstanding borrowings as of December 31, 2019 and 
2018, please read Note 7, Fair Value Measurements, 
to our consolidated financial statements included in 
this report.

2015 Credit Facility

In August 2015 we entered into a $1.0 billion, 

five-year senior unsecured revolving credit facility 
under which we were permitted to draw funds for 
working capital and general corporate purposes. The 
terms of the revolving credit facility included a 
financial covenant that required us not to exceed a 
maximum consolidated leverage ratio. As of 
December 31, 2019, we had no outstanding 
borrowings and were in compliance with all covenants 
under this facility. This credit facility was replaced with 
the new revolving credit facility entered into in January 
2020, as discussed below.

2020 Credit Facility

In January 2020 we entered into a $1.0 billion, 

five-year senior unsecured revolving credit facility 
under which we are permitted to draw funds for 
working capital and general corporate purposes. The 
terms of the revolving credit facility include a financial 
covenant that requires us not to exceed a maximum 
consolidated leverage ratio. This revolving credit 
facility replaced the revolving credit facility entered 
into in August 2015.

Working Capital

Working capital is defined as current assets less 

current liabilities. The change in working capital at 
December 31, 2019, from December 31, 2018, 
reflects an increase in total current assets of $740.9 
million and an increase in total current liabilities of 
$1,568.6 million. 

The net increase in total current assets was 

primarily driven by an increase in net cash, cash 
equivalents and marketable securities, as described 
above, offset by a decrease in inventory resulting from 
our sale of hemophilia-related inventory to Bioverativ.

The net increase in total current liabilities was 
primarily due to the reclassification of $1.5 billion of 
our Senior Notes to current liabilities from notes 
payable, as these Senior Notes are due within one 
year. This increase was partially offset by a reduction 
in accrued expenses and other. 

79

The net decrease in accrued expenses and other 

was primarily related to a decrease in the accrual of 
contingent payments related to FUMADERM and 
TECFIDERA and a decrease in the accrual for 
construction in progress, partially offset by the accrual 
of the $100.0 million upfront payment to Samsung 
Bioepis, which was paid in January 2020.

Share Repurchase Programs

In December 2019 our Board of Directors 
authorized our December 2019 Share Repurchase 
Program, which is a program to repurchase up to $5.0 
billion of our common stock. Our December 2019 
Share Repurchase Program does not have an 
expiration date. All share repurchases under our 
December 2019 Share Repurchase Program will be 
retired. We did not repurchase shares of our common 
stock under our December 2019 Share Repurchase 
Program during the year ended December 31, 2019.

In March 2019 our Board of Directors authorized 
our March 2019 Share Repurchase Program, which is 
a program to repurchase up to $5.0 billion of our 
common stock. Our March 2019 Share Repurchase 
Program does not have an expiration date. All share 
repurchases under our March 2019 Share 
Repurchase Program will be retired. Under our March 
2019 Share Repurchase Program, we repurchased 
and retired approximately 14.7 million shares of our 
common stock at a cost of approximately $3.7 billion 
during the year ended December 31, 2019.

In August 2018 our Board of Directors 
authorized our 2018 Share Repurchase Program, 
which was a program to repurchase up to $3.5 billion 
of our common stock. Our 2018 Share Repurchase 
Program was completed as of June 30, 2019. All 
share repurchases under our 2018 Share Repurchase 
Program were retired. Under our 2018 Share 
Repurchase Program, we repurchased and retired 
approximately 8.9 million and 4.3 million shares of 
our common stock at a cost of approximately $2.1 
billion and $1.4 billion during the years ended 
December 31, 2019 and 2018, respectively.

In July 2016 our Board of Directors authorized 
our 2016 Share Repurchase Program, which was a 
program to repurchase up to $5.0 billion of our 
common stock. Our 2016 Share Repurchase Program 
was completed as of June 30, 2018. All share 
repurchases under our 2016 Share Repurchase 
Program were retired. Under our 2016 Share 
Repurchase Program, we repurchased and retired 
approximately 10.5 million and 3.7 million shares of 
our common stock at a cost of approximately $3.0 
billion and $1.0 billion during the years ended 
December 31, 2018 and 2017, 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 provided by (used in)
investing activities
Net cash flows used in financing
activities

$

$

$

For the Years Ended
December 31,

2019

2018

2017

% Change

2019
compared to
2018

2018
compared to
2017

7,078.6 $

6,187.7 $

4,551.0

14.4 %

36.0 %

470.5 $

(2,046.3) $

(2,963.1)

(123.0)%

(30.9)%

(5,860.4) $

(4,472.0) $

(2,380.0)

31.0 %

87.9 %

Operating Activities

Cash flows from operating activities represent 

the cash receipts and disbursements related to all of 
our activities other than investing and financing 
activities. We expect cash provided from operating 
activities will continue to be our primary source of 
funds to finance operating needs and capital 
expenditures for the foreseeable future.

Operating cash flow is derived by adjusting our 

net income for:

•  non-cash operating items such as depreciation 

and amortization, impairment charges, 
unrealized gain (loss) on strategic investments, 
acquired IPR&D and share-based compensation;

•  changes in operating assets and liabilities which 
reflect timing differences between the receipt 
and payment of cash associated with 
transactions and when they are recognized in 
results of operations; and

•  changes in the fair value of contingent payments 

associated with our acquisitions of businesses 
and payments related to collaborations.

For 2019 compared to 2018, net cash flows 
provided by operating activities increased primarily 
due to higher net income.

Investing Activities

For 2019 compared to 2018, the increase in net 

cash flows provided by investing activities was 
primarily due to a decrease in contingent payments 
made to former shareholders of Fumapharm AG and 
holders of their rights, the proceeds received upon the 
divestiture of our Hillerød, Denmark manufacturing 
operations, the proceeds received on our sales of 
strategic investments and the $462.9 million payment 
made to Ionis reflecting the fair value of the Ionis 
common stock purchased upon the closing of the 
2018 Ionis Agreement in the prior year comparative 
period. This increase was partially offset by a 
decrease in net proceeds related to marketable 
securities, the cash used for our acquisition of NST 
and $155.0 million in milestone payments made to 
Alkermes following the FDA's approval of VUMERITY, 
which was recorded as an intangible asset during the 
fourth quarter of 2019. 

Financing Activities

For 2019 compared to 2018, the increase in net 

cash flows used in financing activities was primarily 
due to an increase in cash used for share 
repurchases. 

80

 
 
Contractual Obligations and Off-Balance Sheet Arrangements

Contractual Obligations

The following table summarizes our contractual obligations as of December 31, 2019, excluding amounts 

related to uncertain tax positions, funding commitments, contingent development, regulatory and commercial 
milestone payments, 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

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

372.3 $

60.6 $

105.9 $

8,792.2
1,013.6
102.5

1,730.8
266.1
—

1,387.2
183.0
—

Total contractual obligations

$ 10,280.6 $

2,057.5 $

1,676.1 $

89.3 $

323.8
329.4
—
742.5 $

116.5
5,350.4
235.1
102.5
5,804.5

(1)  We lease properties and equipment for use in 

our operations. Amounts reflected within the 
table above detail future minimum rental 
commitments under non-cancelable operating 
leases as of December 31 for each of the 
periods presented. In addition to the minimum 
rental commitments, these leases may require 
us to pay additional amounts for taxes, 
insurance, maintenance and other operating 
expenses. 

(2)  Obligations are presented net of sublease 

income expected to be received for the vacated 
small-scale biologics manufacturing facility in 
Cambridge, MA, the vacated portion of our 
Weston, MA facility and other facilities 
throughout the world. 

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

(4)  Purchase and other obligations primarily include  

$697.0 million related to the remaining 
payments on the Transition Toll Tax, contractual 
commitments to our suppliers, $52.0 million in 
contractual commitments for the construction of 
our large-scale biologics manufacturing facility in 
Solothurn, Switzerland and $8.3 million related 
to the fair value of net liabilities on derivative 
contracts. 

Royalty Payments

TYSABRI

In 2013 we acquired from Elan Pharma 

International Ltd. (Elan), an affiliate of Elan 
Corporation plc, full ownership of all remaining rights 
to TYSABRI that we did not already own or control. 
Under the acquisition agreement, we are obligated to 
make contingent payments to Elan of 18% on annual 
worldwide net commercial sales up to $2.0 billion and 

81

25% on annual worldwide net commercial sales that 
exceed $2.0 billion. Royalty payments to Elan and 
other third parties are recognized as cost of sales in 
our consolidated statements of income. Elan was 
acquired by Perrigo Company plc (Perrigo) in 
December 2013 and Perrigo subsequently sold its 
rights to these payments to a third-party effective 
January 2017.

SPINRAZA

In 2016 we exercised our option to develop and 

commercialize SPINRAZA from Ionis. Under our 
agreement with Ionis, we make royalty payments to 
Ionis on annual worldwide net commercial sales of 
SPINRAZA using a tiered royalty rate between 11% 
and 15%, which are recorded as cost of sales in our 
consolidated statements of income. For additional 
information on our collaboration arrangements with 
Ionis, please read Note 18, Collaborative and Other 
Relationships, to our consolidated financial 
statements included in this report.

VUMERITY

In October 2019 the FDA approved VUMERITY 
for the treatment of RMS. Under our agreement with 
Alkermes, we make royalty payments to Alkermes on 
worldwide net commercial sales of VUMERITY using a 
royalty rate of 15%, which are recorded as cost of 
sales in our consolidated statements of income. 
Royalties payable on net commercial sales of 
VUMERITY are subject, under certain circumstances, 
to tiered minimum annual payment requirements for a 
period of five years following FDA approval. For 
additional information on our collaboration 
arrangement with Alkermes, please read Note 18, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

 
Contingent Consideration related to Business 

Combinations

In connection with our acquisitions of 
Convergence Pharmaceuticals Holdings Limited 
(Convergence) and Biogen International Neuroscience 
GmbH (BIN), we agreed to make additional payments 
based upon the achievement of certain milestone 
events. 

As the acquisitions of Convergence and BIN 
occurred after January 1, 2009, we recognized the 
contingent consideration liabilities associated with 
these transactions at their fair value on the 
acquisition date and revalue the remaining obligations 
each reporting period. We may pay up to 
approximately $735.0 million in remaining milestones 
related to these acquisitions.

Fumapharm AG

In 2006 we acquired Fumapharm AG. As part of 

this acquisition we acquired FUMADERM and 
TECFIDERA (together, the Fumapharm Products). We 
were required to make contingent payments to former 
shareholders of Fumapharm AG and holders of their 
rights based on the attainment of certain cumulative 
sales levels of Fumapharm Products and the level of 
total net sales of Fumapharm Products in the prior 12-
month period, as defined in the acquisition 
agreement, until such time as the cumulative sales 
level reached $20.0 billion, at which time no further 
contingent payments were due. During the first 
quarter of 2019 we paid the final $300.0 million 
contingent payment as we achieved the $20.0 billion 
cumulative sales level related to the Fumapharm 
Products in the fourth quarter of 2018.

Contingent Development, Regulatory and 

Commercial Milestone Payments

Based on our development plans as of 

December 31, 2019, we could make potential future 
milestone payments to third parties of up to 
approximately $6.8 billion, including approximately 
$1.2 billion in development milestones, approximately 
$1.4 billion in regulatory milestones and 
approximately $4.2 billion in commercial milestones, 
as part of our various collaborations, including 
licensing and development programs. Payments under 
these agreements generally become due and payable 
upon achievement of certain development, regulatory 
or commercial milestones. Because the achievement 
of these milestones was not considered probable as 
of December 31, 2019, 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 or commercial milestones. 

82

Provided various development, regulatory or 

commercial milestones are achieved, we anticipate 
that we may pay approximately $430.0 million of 
milestone payments in 2020, including $75.0 million 
upon the regulatory filing with the FDA for approval of 
aducanumab and $100.0 million if aducanumab is 
launched in the U.S. 

Other Funding Commitments

As of December 31, 2019, we have several 
ongoing clinical studies in various clinical trial stages. 
Our most significant clinical trial expenditures are to 
CROs. The contracts with CROs are generally 
cancellable, with notice, at our option. We recorded 
accrued expenses of approximately $24.0 million in 
our consolidated balance sheet for expenditures 
incurred by CROs as of December 31, 2019. We have 
approximately $514.0 million in cancellable future 
commitments based on existing CRO contracts as of 
December 31, 2019.

As part of the sale of our Hillerød, Denmark 

manufacturing operations to FUJIFILM, we have 
provided FUJIFILM with certain minimum batch 
production commitment guarantees. There is a risk 
that the minimum contractual batch production 
commitments will not be met. Based upon current 
estimates we expect to incur an adverse commitment 
obligation of approximately $74.0 million associated 
with such guarantees and have accrued for this 
obligation. We may adjust this estimate based upon 
changes in business conditions, which may result in 
the increase or reduction of this adverse commitment 
obligation in subsequent periods.

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, 2019, we have 
$136.9 million of net liabilities associated with 
uncertain tax positions. 

As of December 31, 2019 and 2018, we have 

accrued income tax liabilities of $697.0 million under 
the Transition Toll Tax. Of the amounts accrued as of 
December 31, 2019, no amounts are expected to be 
paid within one year due to an approximately $87.0 
million carryforward of taxes paid in relation to the 
company's 2017 tax return. The Transition Toll Tax will 
be paid over an eight-year period, which started in 
2018, and will not accrue interest. For additional 
information on the Transition Toll Tax, please read 
Note 16, Income Taxes, to our consolidated financial 
statements included in this report.

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.

New Accounting Standards

For a discussion of new accounting standards 

and their expected impact on our consolidated 
financial statements or disclosures, please read 
Note 1, Summary of Significant Accounting Policies, to 
our consolidated financial statements included in this 
report.

Legal Matters

For a discussion of legal matters as of 

December 31, 2019, please read Note 20, Litigation, 
to our consolidated financial statements included in 
this report.

Critical Accounting Policies and 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 ongoing basis 
we evaluate our estimates, judgments and 
methodologies. We base our estimates on historical 
experience and on various other assumptions that we 
believe are reasonable, the results of which form the 
basis for making judgments about the carrying values 
of assets, liabilities and equity and the amount of 
revenues and expenses. Actual results may differ 
from these estimates. Other significant accounting 
policies are outlined in Note 1, Summary of Significant 
Accounting Policies, to our consolidated financial 
statements included in this report. 

Revenue Recognition

We recognize revenues when our customer 
obtains control of promised goods or services, in an 
amount that reflects the consideration which we 
expect to receive in exchange for those goods or 
services. We recognize revenues following the five-
step model prescribed under Financial Accounting 
Standards Board (FASB) Accounting Standards 
Codification 606, Revenue from Contracts with 

83

Customers: (i) identify contract(s) with a customer; (ii) 
identify the performance obligations in the contract; 
(iii) determine the transaction price; (iv) allocate the 
transaction price to the performance obligations in 
the contract; and (v) recognize revenues when (or as) 
we satisfy the performance obligation. 

Product Revenues

In the U.S., we sell our products primarily to 

wholesale distributors and specialty pharmacy 
providers. In other countries, we sell our products 
primarily to wholesale distributors, hospitals, 
pharmacies and other third-party distribution partners. 
These customers subsequently resell our products to 
health care providers and patients. In addition, we 
enter into arrangements with health care providers 
and payors that provide for government-mandated or 
privately-negotiated discounts and allowances related 
to our products.

Product revenues are recognized when the 
customer obtains control of our product, which occurs 
at a point in time, typically upon delivery to the 
customer. We expense incremental costs of obtaining 
a contract as and when incurred if the expected 
amortization period of the asset that we would have 
recognized is one year or less or the amount is 
immaterial.

Reserves for Discounts and Allowances

Product revenues are recorded net of reserves 
established for applicable discounts and allowances 
that are offered within contracts with our customers, 
health care providers or payors, including those 
associated with the implementation of pricing actions 
in certain of the international markets in which we 
operate. Our process for estimating reserves 
established for these variable consideration 
components do not differ materially from our historical 
practices.

Product revenue reserves, which are classified 

as a reduction in product revenues, are generally 
characterized in the following categories: discounts, 
contractual adjustments and returns.

These reserves are based on estimates of the 

amounts earned or to be claimed on the related sales 
and are classified as reductions of accounts 
receivable (if the amount is payable to our customer) 
or a liability (if the amount is payable to a party other 
than our customer). Our estimates of reserves 
established for variable consideration are calculated 
based upon a consistent application of our 
methodology utilizing the expected value method. 
These estimates reflect our historical experience, 
current contractual and statutory requirements, 
specific known market events and trends, industry 
data and forecasted customer buying and payment 
patterns. The transaction price, which includes 

variable consideration reflecting the impact of 
discounts and allowances, may be subject to 
constraint and is included in the net sales price only 
to the extent that it is probable that a significant 
reversal of the amount of cumulative revenues 
recognized will not occur in a future period. Actual 
amounts may ultimately differ from our estimates. If 
actual results vary, we adjust these estimates, which 
could have an effect on earnings in the period of 
adjustment. 

In addition to discounts, rebates and product 
returns, 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 revenues. 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.

For additional information on our revenues, 

please read Note 4, Revenues, to our consolidated 
financial statements included in this report.

Acquired Intangible Assets, including IPR&D

When we purchase a business, the acquired 
IPR&D is measured at fair value, capitalized as an 
intangible asset and tested for impairment at least 
annually, as of October 31, until commercialization, 
after which time the IPR&D is amortized over its 
estimated useful life. If we acquire an asset or group 
of assets that do not meet the definition of a 
business under applicable accounting standards, the 
acquired IPR&D is expensed 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;

84

•  projecting regulatory approvals;

•  estimating future cash flows from product sales 

resulting from completed products and in 
process projects; and

•  developing appropriate discount rates and 

probability rates by project.

We believe the fair values assigned to the 

intangible assets acquired are based upon 
reasonable estimates and assumptions given 
available facts and circumstances as of the 
acquisition dates.

If these projects are not successfully developed, 

the sales and profitability of the company may be 
adversely affected in future periods. Additionally, the 
value of the acquired intangible assets may become 
impaired. No assurance can be given that the 
underlying assumptions used to estimate expected 
project sales, development costs or profitability, or the 
events associated with such projects, will transpire as 
estimated.

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 IPR&D. If the carrying value 
of our acquired IPR&D exceeds its fair value, then the 
intangible asset is written down to its fair value. 
Changes in the estimates and assumptions used in 
determining the fair value of our acquired IPR&D could 
result in an impairment. Impairments are recorded 
within amortization and impairment of acquired 
intangible assets in our consolidated statements of 
income. Assets that have previously been impaired, 
including our vixotrigine program for the treatment of 
neuropathic pain, such as TGN, could become further 
impaired in the future.

Our most significant intangible assets are our 

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 and obtaining the fair value of the U.S. and rest 
of world licenses to Forward Pharma’s intellectual 
property, including Forward Pharma’s intellectual 
property related to TECFIDERA. We amortize the 
intangible assets related to our TYSABRI, AVONEX, 
SPINRAZA, VUMERITY and TECFIDERA (rest of world) 
products using the economic consumption method 
based on revenues generated from the products 
underlying the related intangible assets. An analysis 
of the anticipated lifetime revenues of TYSABRI, 
AVONEX, SPINRAZA, VUMERITY and TECFIDERA (rest 
of world) is performed annually during our long-range 
planning cycle and whenever events or changes in 
circumstances would significantly affect the 
anticipated lifetime revenues of our TYSABRI, AVONEX, 
SPINRAZA, VUMERITY or TECFIDERA (rest of world) 
products.

For additional information on the impairment 

charges related to our long-lived assets during 2019, 
2018 and 2017, 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 were paid in connection with the acquisition of 
Fumapharm AG. Our goodwill balances represent the 
difference between the purchase price and the fair 
value of the identifiable tangible and intangible net 
assets when accounted for using the purchase 
method of accounting.

We assess our goodwill balance within our 
single reporting unit annually, as of October 31, and 
whenever events or changes in circumstances 
indicate the carrying value of goodwill may not be 
recoverable to determine whether any impairment in 
this asset may exist and, if so, the extent of such 
impairment. We compare the fair value of our 
reporting unit to its carrying value. If the carrying 
value of the net assets assigned to the reporting unit 
exceeds the fair value of our reporting unit, we would 
record an impairment loss equal to the difference. 

We completed our required annual impairment 
test in the fourth quarters of 2019, 2018 and 2017 
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.

Contingent Consideration

We record contingent consideration resulting 

from a business combination at its fair value on the 
acquisition date. Each reporting period thereafter, we 

85

revalue the remaining obligations and record 
increases or decreases in their fair value as an 
adjustment to contingent consideration expense in 
our consolidated statements of income. Changes in 
the fair value of our 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.

Income Taxes

We prepare and file income tax returns based on 

our interpretation of each jurisdiction’s tax laws and 
regulations. In preparing our consolidated financial 
statements, we estimate our income tax liability in 
each of the jurisdictions in which we operate by 
estimating our actual current tax expense together 
with assessing temporary differences resulting from 
differing treatment of items for tax and financial 
reporting purposes. These differences result in 
deferred tax assets and liabilities, which are included 
in our consolidated balance sheets. Upon our election 
in the fourth quarter of 2018 to record deferred taxes 
for GILTI, we have included amounts related to U.S. 
GILTI taxes within temporary difference. 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. In the event that 
actual results differ from our estimates, we adjust our 
estimates in future periods and we may need to 
establish a valuation allowance, which could 
materially impact our consolidated financial position 
and results of operations.

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 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.

Item 7A.      Quantitative and Qualitative 
Disclosures About Market Risk

We are subject to certain risks that may affect 
our results of operations, cash flows and fair values 
of assets and liabilities, including volatility in foreign 
currency exchange rates, interest rate movements, 
pricing pressures worldwide and weak economic 
conditions in the foreign markets in which we operate. 
We manage the impact of foreign currency exchange 
rates and interest rates through various financial 
instruments, including derivative instruments such as 
foreign currency forward contracts, interest rate lock 
contracts and interest rate swap contracts. We do not 
enter into financial instruments for trading or 
speculative purposes. The counterparties to these 
contracts are major financial institutions, and there is 
no significant concentration of exposure with any one 
counterparty.

Foreign Currency Exchange Risk

Our results of operations are subject to foreign 
currency exchange rate fluctuations due to the global 
nature of our operations. As a result, our consolidated 
financial position, results of operations and cash 
flows can be affected by market fluctuations in foreign 
currency exchange rates, primarily with respect to the 
Euro, British pound sterling, Canadian dollar, Swiss 
franc, Japanese yen and South Korean won.

86

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. revenues will decline when 
reported in U.S. dollars. The impact to net income as 
a result of a strengthening U.S. dollar will be partially 
mitigated by the value of non-U.S. expenses, which 
will also decline when reported in U.S. dollars. As the 
U.S. dollar weakens versus other currencies, the 
value of the non-U.S. revenues and expenses will 
increase when reported in U.S. dollars.

We have established revenue and operating 
expense hedging and balance sheet risk management 
programs to protect against volatility of future foreign 
currency cash flows and changes in fair value caused 
by volatility in foreign currency exchange rates.

During the second quarter of 2018 the 
International Practices Task Force of the Center for 
Audit Quality categorized Argentina as a country with a 
projected three-year cumulative inflation rate greater 
than 100%, which indicated that Argentina’s economy 
is highly inflationary. This categorization did not have 
a material impact on our results of operations or 
financial position as of December 31, 2019, and is 
not expected to have a material impact on our results 
of operations or financial position in the future.

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 15 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 foreign 
currency exchange rate changes on revenues and net 
income diminishes as significant foreign currency 
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 and liabilities of foreign affiliates. In 
these instances, we principally utilize currency forward 
contracts. We have not elected hedge accounting for 
the balance sheet related items. The cash flows from 
these contracts are reported as operating activities in 
our consolidated statements of cash flows.

The following quantitative information includes 

the impact of currency movements on forward 
contracts used in our revenue, operating expense and 
balance sheet hedging programs. As of December 31, 
2019 and 2018, a hypothetical adverse 10% 
movement in foreign currency exchange 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 $265.0 
million and $290.0 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.

Net Investment Hedge Program

Our net investment hedging program is designed 

to mitigate currency fluctuations between the U.S. 
dollar and South Korean won as a result of exercising 
our option to increase our ownership percentage in 
Samsung Bioepis to approximately 49.9%. We entered 
into foreign currency forward contracts to manage the 
foreign currency risk with our forward contracts used 
to hedge changes in the spot rate over the next 10 
months. As of December 31, 2019 and 2018, a 
hypothetical adverse 10% movement would result in a 
hypothetical decrease in fair value of approximately 
$43.0 million and $64.0 million, respectively. The 
estimated fair value was determined by measuring the 
impact of the hypothetical spot rate movement on 
outstanding forward contracts.

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 

87

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, 
2019 and 2018, we estimate that such hypothetical 
100 basis point adverse movement would result in a 
hypothetical loss in fair value of approximately $21.0 
million and $19.0 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, 2019 and 2018, a 100 basis-point 
adverse movement (increase in LIBOR) would increase 
annual interest expense by approximately 
$6.8 million. 

Pricing Pressure

Governments in certain international markets in 

which we operate have implemented measures, and 
may in the future implement new or additional 
measures, to reduce health care costs to limit the 
overall level of government expenditures. These 
measures vary by country and may include, among 
other things, patient access restrictions, suspensions 
on price increases, prospective and possible 
retroactive price reductions and other recoupments 
and increased mandatory discounts or rebates, 
recoveries of past price increases and greater 
importation of drugs from lower-cost countries. In 
addition, certain countries set prices by reference to 
the prices in other countries where our products are 
marketed. Thus, our inability to obtain and maintain 
adequate prices in a particular country may adversely 
affect our ability to secure acceptable prices in 
existing and potential new markets, which may limit 
market growth. The continued implementation of 
pricing actions throughout Europe may also lead to 
higher levels of parallel trade.

In the U.S., federal and state legislatures, health 

agencies and third-party payors continue to focus on 
containing the cost of health care. Legislative and 
regulatory proposals, enactments to reform health 
care insurance programs and increasing pressure 
from social sources could significantly influence the 
way our products are prescribed and purchased. It is 
possible that additional federal health care reform 
measures will be adopted in the future, which could 
result in increased pricing pressure and reduced 
reimbursement for our products and otherwise have 
an adverse impact on our consolidated financial 
position or results of operations. 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, impose restrictions on 
the coverage of certain drugs.

Our products are also susceptible to increasing 
competition in many markets from generic versions, 
biosimilars and prodrugs of existing products as well 
as products approved under abbreviated regulatory 
pathways. Such products are likely to be sold at 
substantially lower prices than branded 
products. Accordingly, the introduction of such 
products, as well as other lower-priced competing 
products, may significantly reduce both the price that 
we are able to charge for our products and the volume 
of products we sell, which will negatively impact our 
revenues. In addition, when a generic version of one 
of our products is commercialized, it may, in some 
cases, be automatically substituted for our product 
and reduce our revenues in a short period of time.

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 and other third-party distributors, public 
hospitals, pharmacies and other government entities. 
We monitor the financial performance and 
creditworthiness of our customers so that we can 
properly assess and respond to changes in their 
credit profile. We operate in certain countries where 
weakness in economic conditions can result in 
extended collection periods. We continue to monitor 
these conditions, including the volatility associated 
with international economies and the relevant 
financial markets, and assess their possible impact 
on our business. To date, we have not experienced 
any significant losses with respect to the collection of 
our accounts receivable. 

We believe that our allowance for doubtful 

accounts was adequate as of December 31, 2019 
and 2018. 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-82 of this report 
and is incorporated herein by reference.

Changes in and Disagreements 

Item 9.     
with Accountants on Accounting and 
Financial Disclosure

None.

Item 9A.      Controls and Procedures

Disclosure Controls and Procedures and 
Internal Control over Financial Reporting

Controls and Procedures

We have carried out an evaluation, under the 

supervision and with the participation of our 
management, including our principal executive officer 
and principal financial officer, of the effectiveness of 
the design and operation of our disclosure controls 
and procedures (as defined in Rules 13a-15(e) and 
15d-15(e) under the Securities Exchange Act of 1934, 
as amended), as of December 31, 2019. 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.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control 

over financial reporting during the quarter ended 
December 31, 2019, that have materially affected, or 
are reasonably likely to materially affect, our internal 
control over financial reporting.

88

independent registered public accounting firm, as 
stated in their attestation report, which is included 
herein.

Item 9B.      Other Information

None.

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 
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, 2019. 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.

Based on our assessment, our management has 

concluded that, as of December 31, 2019, 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, 2019, has 
been audited by PricewaterhouseCoopers LLP, an 

89

PART III

Item 10.      Directors, Executive Officers 
and Corporate Governance

The information concerning our executive 
officers is set forth under the heading Information 
about our Executive Officers in Item 1 of this report. 
The text of our code of business conduct, which 
includes the code of ethics that applies to our 
principal executive officer, principal financial officer, 
principal accounting officer or controller, and persons 
performing similar functions, is posted on our website, 
www.biogen.com, under the “Corporate Governance” 
subsection of the “Investors” section of the site. We 
intend to make all required disclosures regarding any 
amendments to, or waivers from, provisions of our 
code of business conduct at the same location of our 
website. 

The response to the remainder of this item is 

incorporated by reference from the discussion 
responsive thereto in the sections entitled 
“Proposal 1 - Election of Directors,” “Corporate 
Governance at Biogen” and “Miscellaneous - 
Stockholder Proposals” contained in the proxy 
statement for our 2020 annual meeting of 
stockholders.

Item 11.      Executive Compensation

The response to this item is incorporated by 

reference from the discussion responsive thereto in 
the sections entitled “Executive Compensation 
Matters” and “Corporate Governance at Biogen” 
contained in the proxy statement for our 2020 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 2020 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 at Biogen” contained in the proxy 
statement for our 2020 annual meeting of 
stockholders.

Item 14.      Principal Accountant 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 2020 annual meeting of stockholders.

90

PART IV

Item 15.  

Exhibits and Financial Statement Schedules

a.  

(1) Consolidated Financial Statements:

The following financial statements are filed as part of this report:

Financial Statements
Consolidated Statements of Income
Consolidated Statements of Comprehensive Income
Consolidated Balance Sheets
Consolidated Statements of Cash Flows
Consolidated Statements of Equity
Notes to Consolidated Financial Statements
Report of Independent Registered Public Accounting Firm

Certain totals may not sum due to rounding.

(2) Exhibits

Page Number

F-2
F-3
F-4
F-5
F-6
F-9
F-80

The exhibits listed on the Exhibit Index beginning on page 92, which is incorporated herein by reference, are 

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

(3) Financial Statement Schedules

Schedules are omitted because they are not applicable, or are not required, or because the information is 

included in the consolidated financial statements and notes thereto.

Item 16.  

Form 10-K Summary

Not applicable.

91

  
 
Exhibit No.
2.1†

2.2

3.1

3.2

3.3

4.1

4.2

4.3

4.4+
10.1

10.2

10.3†

10.4†

10.5

10.6*

10.7*

10.8*

10.9*

10.10*

10.11*

10.12*

EXHIBIT INDEX

Description
Asset Purchase Agreement among Biogen Idec International Holding Ltd., Elan Pharma 
International Limited and Elan Pharmaceuticals, Inc., dated as of February 5, 2013. Filed 
as Exhibit 2.1 to our Current Report on Form 8-K/A filed on February 12, 2013.
Separation Agreement between Biogen Inc. and Bioverativ Inc. dated as of January 31, 
2017. Filed as Exhibit 2.1 to our Current Report on Form 8-K filed on February 2, 2017.
Amended and Restated Certificate of Incorporation, as amended. Filed as Exhibit 3.1 to 
our Quarterly Report on Form 10-Q for the quarter ended June 30, 2012.
Certificate of Amendment to the Certificate of Incorporation. Filed as Exhibit 3.1 to our 
Current Report on Form 8-K filed on March 27, 2015.
Fourth Amended and Restated Bylaws. Filed as Exhibit 3.1 to our Current Report on Form 
8-K filed on June 9, 2017.
Reference is made to Exhibit 3.1 for a description of the rights, preferences and privileges 
of our Series A Preferred Stock and Series X Junior Participating Preferred Stock.
Indenture between Biogen Inc. and U.S. Bank National Association, dated as of September 
15, 2015. Filed as Exhibit 4.1 to our Current Report on Form 8-K filed on September 16, 
2015.
First Supplemental Indenture between Biogen Inc. and U.S. Bank National Association, 
dated September 15, 2015. Filed as Exhibit 4.2 to our Current Report on Form 8-K filed 
on September 16, 2015.
Description of Securities.
Credit Agreement between Biogen Inc., Bank of America, N.A., Goldman Sachs Bank USA 
and other lenders party thereto, dated August 28, 2015. Filed as Exhibit 10.1 to our Current 
Report on Form 8-K filed on September 1, 2015.
Credit Agreement, dated as of January 28, 2020, among Biogen Inc., Bank of America, 
N.A., as administrative agent, swing ling lender and the L/C issuer, and the other lenders 
party thereto. Filed as Exhibit 10.1 to our Current Report on Form 8-K filed on February 3, 
2020.
Second Amended and Restated Collaboration Agreement between Biogen Idec Inc. and 
Genentech, Inc., dated as of October 18, 2010. Filed as Exhibit 10.5 to our Annual Report 
on Form 10-K for the year ended December 31, 2010.
Letter  Agreement  regarding  GA101  financial  terms  between  Biogen  Idec  Inc.  and 
Genentech, Inc., dated October 18, 2010. Filed as Exhibit 10.6 to our Annual Report on 
Form 10-K for the year ended December 31, 2010.
Settlement  and  License  Agreement,  dated  January  17,  2017,  between  Biogen  Swiss 
Manufacturing GmbH, Biogen International Holdings ltd., Forward Pharma A/S and other 
parties thereto. Filed as Exhibit 10.1 to our Current Report on Form 8-K filed on February 
1, 2017.
Biogen Inc. 2017 Omnibus Equity Plan. Filed as Appendix B to our Definitive Proxy Statement 
on Schedule 14A filed on April 26, 2017.
Form of restricted stock unit award agreement under the Biogen Inc. 2017 Omnibus Equity 
Plan. Filed as Exhibit 10.2 to our Quarterly Report on Form 10-Q for the quarter ended 
June 30, 2017.
Form of market stock unit award agreement under the Biogen Inc. 2017 Omnibus Equity 
Plan. Filed as Exhibit 10.3 to our Quarterly Report on Form 10-Q for the quarter ended 
June 30, 2017.
Form of performance unit award agreement under the Biogen Inc. 2017 Omnibus Equity 
Plan. Filed as Exhibit 10.4 to our Quarterly Report on Form 10-Q for the quarter ended 
June 30, 2017.
Form  of  cash-settled  performance  unit  award  agreement  under  the  Biogen  Inc.  2017 
Omnibus Equity Plan. Filed as Exhibit 10.5 to our Quarterly Report on Form 10-Q for the 
quarter ended June 30, 2017.
Form of performance stock units award agreement (cash-settled) under the Biogen Inc. 
2017 Omnibus Equity Plan. Filed as Exhibit 10.10 to our Annual Report on Form 10-K for 
the year ended December 31, 2017.
Form of performance stock units award agreement under the Biogen Inc. 2017 Omnibus 
Equity Plan. Filed as Exhibit 10.11 to our Annual Report on Form 10-K for the year ended 
December 31, 2017.

92

  
  
  
  
  
  
  
  
  
  
  
  
Exhibit No.
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*

10.34*

Description
Form of performance stock units award agreement under the Biogen Inc. 2017 Omnibus 
Equity Plan. Filed as Exhibit 10.1 to our Quarterly Report on Form 10-Q for the quarter 
ended March 31, 2018.
Form of performance stock units award agreement (cash settled) under the Biogen Inc. 
2017 Omnibus Equity Plan. Filed as Exhibit 10.2 to our Quarterly Report on Form 10-Q 
for the quarter ended March 31, 2018.
Form of restricted stock unit award agreement (2018 one-time transition grant) under 
the Biogen Inc. 2017 Omnibus Equity Plan. Filed as Exhibit 10.3 to our Quarterly Report 
on Form 10-Q for the quarter ended March 31, 2018.
Form of market stock unit award agreement under the Biogen Inc. 2017 Omnibus Equity 
Plan (for grants commencing in July 2019). Filed as Exhibit 10.1 to our Quarterly Report 
on Form 10-Q for the quarter ended June 30, 2019.
Form of performance stock units award agreement under the Biogen Inc. 2017 Omnibus 
Equity Plan (for grants commencing in July 2019). Filed as Exhibit 10.2 to our Quarterly 
Report on Form 10-Q for the quarter ended June 30, 2019.
Form of performance stock units award agreement (cash settled) under the Biogen Inc. 
2017 Omnibus Equity Plan (for grants commencing in July 2019). Filed as Exhibit 10.3 
to our Quarterly Report on Form 10-Q for the quarter ended June 30, 2019.
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.
Biogen Inc. 2006 Non-Employee Directors Equity Plan, as amended. Filed as Exhibit 10.1 
to our Quarterly Report on Form 10-Q for the quarter ended March 31, 2015.
Biogen Inc. 2015 Employee Stock Purchase Plan. Filed as Appendix A to our Definitive 
Proxy Statement on Schedule 14A filed on April 30, 2015.
Biogen Idec Inc. 2008 Performance-Based Management Incentive Plan. Filed as Appendix 
B to our Definitive Proxy Statement on Schedule 14A filed on May 8, 2008.
Biogen Inc. 2019 Form of Performance-Based Management Incentive Plan. Filed as Exhibit 
10.1 to our Quarterly Report on Form 10-Q for the quarter ended March 31, 2019.
Biogen Idec Inc. Voluntary Executive Supplemental Savings Plan, as amended and restated 
effective January 1, 2004. Filed as Exhibit 10.13 to our Annual Report on Form 10-K for 
the year ended December 31, 2003.
Biogen Idec Inc. Supplemental Savings Plan, as amended. Filed as Exhibit 10.23 to our 
Annual Report on Form 10-K for the year ended December 31, 2015.
Biogen Idec Inc. Voluntary Board of Directors Savings Plan, as amended. Filed as Exhibit 
10.24 to our Annual Report on Form 10-K for the year ended December 31, 2015.
Biogen  Inc.  Executive  Severance  Policy  -  U.S.  Executive  Vice  President,  as  amended 
effective June 19, 2019. Filed as Exhibit 10.4 to our Quarterly Report on Form 10-Q for 
the quarter ended June 30, 2019.
Annual Retainer Summary for Board of Directors. Filed as Exhibit 10.31 to our Annual 
Report on Form 10-K for the year ended December 31, 2018.
Annual  Retainer  Summary  for  Board  of  Directors  (effective  January  1,  2020).  Filed  as 
Exhibit 10.1 to our Quarterly Report on Form 10-Q for the quarter ended September 30, 
2019.

93

  
  
  
  
  
  
  
  
  
  
  
  
  
  
Exhibit No.
10.35*

10.36*

10.37*

10.38*

10.39*

10.40*

21+
23+
31.1+

31.2+

32.1++

101++

Description
Form  of  indemnification  agreement  for  directors  and  executive  officers.  Filed  as  Exhibit 
10.1 to our Current Report on Form 8-K filed on June 7, 2011.
Employment Agreement between Biogen Inc. and Michel Vounatsos dated December 18, 
2016 and effective as of January 6, 2017. Filed as Exhibit 10.1 to our Current Report on 
Form 8-K filed on December 19, 2016.
Letter regarding employment arrangement of Jeffrey Capello dated November 14, 2017. 
Filed as Exhibit 10.31 to our Annual Report on Form 10-K for the year ended December 31, 
2017.
Letter regarding employment arrangement of Michael Ehlers dated April 16, 2016. Filed as 
Exhibit 10.33 to our Annual Report on Form 10-K for the year ended December 31, 2017.
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 for Paul McKenzie dated December 14, 2015. 
Filed as Exhibit 10.4 to our Quarterly Report on Form 10-Q for the quarter ended March 
31, 2018.
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, 2019, formatted in iXBRL (Inline 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.

*

†

+

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.

94

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

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

SIGNATURES

BIOGEN INC.

By:

/S/    MICHEL VOUNATSOS
Michel Vounatsos
Chief Executive Officer

Date: February 6, 2020 

95

 
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the 

following persons on behalf of the registrant and in the capacities and on the dates indicated.

Name

Capacity

Date

/S/    MICHEL VOUNATSOS
Michel Vounatsos

/S/    JEFFREY D. CAPELLO
Jeffrey D. Capello

/S/    ROBIN C. KRAMER

Robin C. Kramer

/S/    STELIOS PAPADOPOULOS
Stelios Papadopoulos

/S/    ALEXANDER J. DENNER
 Alexander J. Denner

/S/    CAROLINE D. DORSA
Caroline D. Dorsa

/S/    WILLIAM A. HAWKINS
William A. Hawkins

/S/    NANCY L. LEAMING
Nancy L. Leaming

/S/    JESUS B. MANTAS
Jesus B. Mantas

/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 6, 2020

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

February 6, 2020

Vice President, Chief Accounting
Officer (principal accounting officer)

February 6, 2020

   Director and Chairman of the Board of

Directors

February 6, 2020

Director

February 6, 2020

Director

February 6, 2020

Director

February 6, 2020

Director

February 6, 2020

Director

February 6, 2020

Director

February 6, 2020

Director

February 6, 2020

Director

February 6, 2020

Director

February 6, 2020

Director

February 6, 2020

Director

February 6, 2020

96

  
 
  
 
  
 
 
  
 
  
 
  
 
  
 
  
 
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-80

F- 1

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

For the Years Ended December 31,

2019

2018

2017

Revenues:

Product, net
Revenues from anti-CD20 therapeutic programs
Other

Total revenues

Cost and expenses:

Cost of sales, excluding amortization and impairment of
acquired intangible assets

Research and development
Selling, general and administrative
Amortization and impairment of acquired intangible assets
Collaboration profit (loss) sharing
Loss on divestiture of Hillerød, Denmark manufacturing
operations
(Gain) loss on fair value remeasurement of contingent
consideration
Acquired in-process research and development
Restructuring charges

Total cost and expenses

Income from operations
Other income (expense), net
Income before income tax expense and equity in loss of
investee, net of tax

Income tax expense
Equity in loss of investee, net of tax
Net income
Net income (loss) attributable to noncontrolling interests, net
of tax
Net income attributable to Biogen Inc.
Net income per share:

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.

—

—

$

11,379.8 $

10,886.8 $

2,290.4
707.7
14,377.9

1,980.2
585.9
13,452.9

1,955.4
2,280.6
2,374.7
489.9
241.6

55.3

(63.7)
—
1.5
7,335.3
7,042.6
83.3

7,125.9
1,158.0
79.4
5,888.5

1,816.3
2,597.2
2,106.3
747.3
185.0

(12.3)
112.5
12.0
7,564.3
5,888.6
11.0

5,899.6
1,425.6
—
4,474.0

—

5,888.5 $

43.3
4,430.7 $

31.47 $
31.42 $

21.63 $
21.58 $

$

$
$

187.1
187.4

204.9
205.3

10,354.7
1,559.2
360.0
12,273.9

1,630.0
2,253.6
1,933.9
814.7
112.3

62.7
120.0
0.9
6,928.1
5,345.8
(217.0)

5,128.8
2,458.7
—
2,670.1

131.0
2,539.1

11.94
11.92

212.6
213.0

See accompanying notes to these consolidated financial statements.

F- 2

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

Net income attributable to Biogen Inc.

$

5,888.5 $

4,430.7 $

2,539.1

For the Years Ended December 31,

2019

2018

2017

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

Gains (losses) on net investment hedges:

Gains (losses) recognized during the period, net of tax
Less: reclassification adjustment for (gains) losses included
in net income, net of tax

Gains (losses) on net investment hedges, net of tax
Unrealized gains (losses) on pension benefit obligation, net
of tax

Currency translation adjustment

Total other comprehensive income (loss), net of tax

11.8

(3.6)

8.2

88.1

(115.0)
(26.9)

28.6

(7.0)
21.6

(1.5)

103.8

105.2

(10.6)

6.7

(3.9)

97.4

41.8
139.2

5.0

(1.5)
3.5

5.5

(67.8)

76.5

(3.5)

12.7

9.2

(193.8)

31.5
(162.3)

—

—
—

(4.1)

158.7

1.5

Comprehensive income attributable to Biogen Inc.

5,993.7

4,507.2

2,540.6

Comprehensive income (loss) attributable to noncontrolling
interests, net of tax

Comprehensive income

(0.4)

42.9

131.0

$

5,993.3 $

4,550.1 $

2,671.6

See accompanying notes to these consolidated financial statements.

F- 3

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

ASSETS

As of December 31,

2019

2018

Current assets:

Cash and cash equivalents
Marketable securities
Accounts receivable, net
Due from anti-CD20 therapeutic programs
Inventory
Other current assets

Total current assets

Marketable securities
Property, plant and equipment, net
Operating lease assets
Intangible assets, net
Goodwill
Deferred tax asset
Investments and other assets

Total assets

Current liabilities:

Current portion of notes payable
Taxes payable
Accounts payable
Accrued expenses and other
Total current liabilities

Notes payable
Deferred tax liability
Long-term operating lease liabilities
Other long-term liabilities

Total liabilities

Commitments and contingencies
Equity:
Biogen Inc. shareholders’ equity

LIABILITIES AND EQUITY

Preferred stock, par value $0.001 per share
Common stock, par value $0.0005 per share
Additional paid-in capital
Accumulated other comprehensive loss
Retained earnings
Treasury stock, at cost; 23.8 million and 23.8 million shares, respectively

Total Biogen Inc. shareholders’ equity

Noncontrolling interests

Total equity
Total liabilities and equity

$

$

$

$

2,913.7 $
1,562.2
1,880.5
590.2
804.2
631.0
8,381.8
1,408.1
3,247.3
427.0
3,527.4
5,757.8
3,232.1
1,252.8

27,234.3 $

1,495.8 $
71.4
530.8
2,765.8
4,863.8
4,459.0
2,810.8
412.7
1,348.9
13,895.2

—
0.1
—
(135.2)
16,455.4
(2,977.1)
13,343.2
(4.1)
13,339.1
27,234.3 $

1,224.6
2,313.4
1,958.5
526.9
929.9
687.6
7,640.9
1,375.9
3,601.2
—
3,120.0
5,706.4
2,153.9
1,690.6
25,288.9

—
63.5
370.5
2,861.2
3,295.2
5,936.5
1,636.2
—
1,389.4
12,257.3

—
0.1
—
(240.4)
16,257.0
(2,977.1)
13,039.6
(8.0)
13,031.6
25,288.9

See accompanying notes to these consolidated financial statements.

F- 4

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

For the Years Ended December 31,
2018

2017

2019

Cash flows from operating activities:

Net income
Adjustments to reconcile net income to net cash flows from operating
activities:

Depreciation, amortization and impairments
Acquired in-process research and development
Share-based compensation
Deferred income taxes
Contingent consideration
Loss on divestiture of Hillerød, Denmark manufacturing operations
Other
Changes in operating assets and liabilities, net:

Accounts receivable
Due from anti-CD20 therapeutic programs
Inventory
Accrued expenses and other current liabilities
Income tax assets and liabilities
Other liabilities

Net cash flows provided by operating activities

Cash flows from investing activities:

Proceeds from sales and maturities of marketable securities
Purchases of marketable securities
Contingent consideration related to Fumapharm AG acquisition
Acquisition of Nightstar Therapeutics plc, net of cash acquired
Proceeds from divestiture of Hillerød, Denmark manufacturing
operations
Acquired in-process research and development
Purchases of property, plant and equipment
Acquisitions of intangible assets
Purchase of Ionis Pharmaceuticals, Inc. stock
Investment in Samsung Bioepis
Proceeds from sales of strategic investments
Other

Net cash flows provided by (used in) investing activities

Cash flows from financing activities:

Purchases of treasury stock
Net contribution (distribution) to noncontrolling interests
Repayments of borrowings
Net cash contribution to Bioverativ, Inc.
Contingent consideration payments
Other

Net cash flows used in financing activities

Net increase (decrease) 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

$ 5,888.5 $ 4,474.0 $ 2,670.1

680.6
—
182.3
67.1
(63.7)
55.3
69.2

68.8
(63.3)
(19.2)
240.2
16.1
(43.3)
7,078.6

6,007.0
(5,252.6)
(300.0)
(744.4)

923.7
—
(514.5)
(155.0)
—
—
479.3
27.0
470.5

1,016.6
112.5
157.5
108.3
(12.3)
—
(69.1)

(205.2)
5.7
(52.1)
465.5
321.7
(135.4)
6,187.7

9,173.7
(7,694.8)
(1,500.0)
—

—
(112.5)
(770.6)
(3.0)
(462.9)
(676.6)
—
0.4
(2,046.3)

1,081.0
120.0
128.0
91.7
62.7
—
162.1

(435.6)
(232.0)
(94.5)
(227.4)
1,303.9
(79.0)
4,551.0

5,565.9
(5,355.2)
(1,200.0)
—

—
(120.0)
(867.4)
(975.4)
—
—
—
(11.0)
(2,963.1)

(5,868.3)
4.3
—
—
—
3.6
(5,860.4)
1,688.7
0.4
1,224.6

(1,365.4)
(134.1)
(560.9)
(302.7)
(3.0)
(13.9)
(2,380.0)
(792.1)
39.4
2,326.5
$ 2,913.7 $ 1,224.6 $ 1,573.8

(4,352.6)
(36.4)
(3.2)
—
(58.2)
(21.6)
(4,472.0)
(330.6)
(18.6)
1,573.8

See accompanying notes to these consolidated financial statements.

F- 5

 
 
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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1.  

Summary of Significant Accounting Policies

References in these notes to "Biogen," the "company," "we," "us" and "our" refer to Biogen Inc. and its 

consolidated subsidiaries.

Business Overview

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

innovative therapies for people living with serious neurological and neurodegenerative diseases as well as related 
therapeutic adjacencies. Our core growth areas include multiple sclerosis (MS) and neuroimmunology; Alzheimer’s 
disease (AD) and dementia; neuromuscular disorders, including spinal muscular atrophy (SMA) and amyotrophic 
lateral sclerosis (ALS); movement disorders, including Parkinson's disease; and ophthalmology. We are also focused 
on discovering, developing and delivering worldwide innovative therapies in our emerging growth areas of 
immunology; neurocognitive disorders; acute neurology; and pain. In addition, we commercialize biosimilars of 
advanced biologics. We support our drug discovery and development efforts through the commitment of significant 
resources to discovery, research and development programs and business development opportunities.

Our marketed products include TECFIDERA, AVONEX, PLEGRIDY, TYSABRI, VUMERITY and FAMPYRA for the 
treatment of MS; SPINRAZA for the treatment of SMA; and FUMADERM for the treatment of severe plaque psoriasis. 
We also have certain business and financial rights with respect to RITUXAN for the treatment of non-Hodgkin's 
lymphoma, chronic lymphocytic leukemia (CLL) and other conditions; RITUXAN HYCELA for the treatment of non-
Hodgkin's lymphoma and CLL; GAZYVA for the treatment of CLL and follicular lymphoma; OCREVUS for the treatment 
of primary progressive MS (PPMS) and relapsing MS (RMS); and other potential anti-CD20 therapies pursuant to our 
collaboration arrangements with Genentech, Inc. (Genentech), a wholly-owned member of the Roche Group. For 
additional information on our collaboration arrangements with Genentech, please read Note 18, Collaborative and 
Other Relationships, to these consolidated financial statements.

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

that expands access to medicines and reduce the cost burden for healthcare systems. Through Samsung Bioepis 
Co., Ltd. (Samsung Bioepis), our joint venture with Samsung BioLogics Co., Ltd. (Samsung BioLogics), we market and 
sell BENEPALI, an etanercept biosimilar referencing ENBREL, IMRALDI, an adalimumab biosimilar referencing 
HUMIRA, and FLIXABI, an infliximab biosimilar referencing REMICADE, in certain countries in Europe and have 
exclusive rights to commercialize these products in China. Additionally, we have exclusive rights to commercialize two 
potential ophthalmology biosimilar products, SB11 referencing LUCENTIS and SB15 referencing EYLEA, in major 
markets worldwide, including the U.S., Canada, Europe, Japan and Australia. For additional information on our 
collaboration arrangements with Samsung Bioepis, please read Note 18, Collaborative and Other Relationships, to 
these consolidated financial statements.

Consolidation

Our consolidated financial statements reflect our financial statements, those of our wholly-owned subsidiaries 
and those of certain variable interest entities where we are the primary beneficiary. For consolidated entities where 
we own or are exposed to less than 100% of the economics, we record net income (loss) attributable to 
noncontrolling interests in our consolidated statements of income equal to the percentage of the economic or 
ownership interest retained in such entities by the respective noncontrolling parties. Intercompany balances and 
transactions are eliminated in consolidation. 

In determining whether we are the primary beneficiary of a variable interest 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.

F- 9

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

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 ongoing basis we evaluate our estimates, judgments and 
methodologies. We base our estimates on historical experience and on various other assumptions that we believe 
are reasonable, the results of which form the basis for making judgments about the carrying values of assets, 
liabilities and equity and the amount of revenues and expenses. Actual results may differ from these estimates.

Revenue Recognition

In May 2014 the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 

2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes all existing revenue recognition 
requirements, including most industry specific guidance. This standard requires a company to recognize revenues 
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. This standard became effective for us on January 1, 2018, and was 
adopted using the modified retrospective method. The adoption of this standard as of January 1, 2018, did not 
change our revenue recognition.

We recognize revenues when our customer obtains control of promised goods or services, in an amount that 

reflects the consideration which we expect to receive in exchange for those goods or services. We recognize 
revenues following the five-step model prescribed under the FASB Accounting Standards Codification (ASC) 606, 
Revenue from Contracts with Customers: (i) identify contract(s) with a customer; (ii) identify the performance 
obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance 
obligations in the contract; and (v) recognize revenues when (or as) we satisfy the performance obligation.

Product Revenues

In the United States (U.S.), we sell our products primarily to wholesale distributors and specialty pharmacy 
providers. In other countries, we sell our products primarily to wholesale distributors, hospitals, pharmacies and 
other third-party distribution partners. These customers subsequently resell our products to health care providers 
and patients. In addition, we enter into arrangements with health care providers and payors that provide for 
government-mandated or privately-negotiated discounts and allowances related to our products.

Product revenues are recognized when the customer obtains control of our product, which occurs at a point in 

time, typically upon delivery to the customer. We expense incremental costs of obtaining a contract as and when 
incurred if the expected amortization period of the asset that we would have recognized is one year or less or the 
amount is immaterial.

Reserves for Discounts and Allowances

Product revenues are recorded net of reserves established for applicable discounts and allowances that are 

offered within contracts with our customers, health care providers or payors, including those associated with the 
implementation of pricing actions in certain of the international markets in which we operate. Our process for 
estimating reserves established for these variable consideration components do not differ materially from our 
historical practices.

Product revenue reserves, which are classified as a reduction in product revenues, are generally characterized 

in the following categories: discounts, contractual adjustments and returns.

These reserves are based on estimates of the amounts earned or to be claimed on the related sales and are 

classified as reductions of accounts receivable (if the amount is payable to our customer) or a liability (if the amount 
is payable to a party other than our customer). Our estimates of reserves established for variable consideration are 
calculated based upon a consistent application of our methodology utilizing the expected value method. These 
estimates reflect our historical experience, current contractual and statutory requirements, specific known market 
events and trends, industry data and forecasted customer buying and payment patterns. The transaction price, which 
includes variable consideration reflecting the impact of discounts and allowances, may be subject to constraint and 
is included in the net sales price only to the extent that it is probable that a significant reversal of the amount of the 
cumulative revenues recognized will not occur in a future period. 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.

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

Discounts include trade term discounts and wholesaler incentives. Trade term discounts and wholesaler 
incentives primarily relate to estimated obligations for credits to be granted to wholesalers for remitting payment on 
their purchases within established incentive periods and credits to be granted to wholesalers for compliance with 
various contractually-defined inventory management practices, respectively. We determine these reserves based on 
our historical experience, including the timing of customer payments.

Contractual adjustments primarily relate to Medicaid and managed care rebates, co-payment (copay) 
assistance, Veterans Administration (VA) and Public Health Service (PHS) discounts, specialty pharmacy program 
fees and other governmental rebates or applicable allowances.

•  Medicaid rebates relate to our estimated obligations to states under established reimbursement 

arrangements. Rebate accruals are recorded in the same period the related revenue is recognized, resulting 
in a reduction of product revenue and the establishment of a liability which is included in other current 
liabilities. Our liability for Medicaid rebates consists of estimates for claims that a state will make for the 
current quarter, claims for prior quarters that have been estimated for which an invoice has not been 
received, invoices received for claims from the prior quarters that have not been paid and an estimate of 
potential claims that will be made for inventory that exists in the distribution channel at period end.

•  Governmental rebates or chargebacks, including VA and PHS discounts, represent our estimated obligations 
resulting from contractual commitments to sell products to qualified healthcare providers at prices lower 
than the list prices we charge to wholesalers which provide those products. The wholesaler charges us for 
the difference between what the wholesaler pays for the products and the ultimate selling price to the 
qualified healthcare providers. Rebate and chargeback reserves are established in the same period as the 
related revenue is recognized, resulting in a reduction in product revenue and accounts receivable. 
Chargeback amounts are generally determined at the time of resale to the qualified healthcare provider 
from the wholesaler, and we generally issue credits for such amounts within a few weeks of the wholesaler 
notifying us about the resale. Our reserves for VA, PHS and chargebacks consist of amounts that we expect 
to issue for inventory that exists at the wholesalers that we expect will be sold to qualified healthcare 
providers and chargebacks that wholesalers have claimed for which we have not issued a credit.

•  Managed care rebates represent our estimated obligations to third parties, primarily pharmacy benefit 

managers. Rebate accruals are recorded in the same period the related revenue is recognized, resulting in 
a reduction of product revenue and the establishment of a liability which is included in accrued expenses 
and other current liabilities. These rebates result from performance-based goals, formulary position and 
price increase limit allowances (price protection). The calculation of the accrual for these rebates is based 
on an estimate of the customer’s buying patterns and the resulting applicable contractual rebate rate(s) to 
be earned over a contractual period.

•  Copay assistance represents financial assistance to qualified patients, assisting them with prescription 

drug co-payments required by insurance. The calculation of the accrual for copay is based on an estimate of 
claims and the cost per claim that we expect to receive associated with inventory that exists in the 
distribution channel at period end.

•  Other governmental rebates, non-U.S. pharmaceutical taxes or applicable allowances primarily relate to 
mandatory rebates and discounts in international markets where government-sponsored healthcare 
systems are the primary payors for healthcare.

Product returns are established for returns expected to be made by wholesalers and are recorded in the period 
the related revenue is recognized, resulting in a reduction to product revenues. 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 discounts, rebates and product returns, 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 revenues. To the extent we can demonstrate a 

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

separable benefit and fair value for these services we classify these payments in selling, general and administrative 
expenses.

Revenues from Anti-CD20 Therapeutic Programs

Our collaboration with Genentech is within the scope of ASC 808, Collaborative Agreements, which provides 
guidance on the presentation and disclosure of collaborative arrangements. For purposes of this footnote we refer to 
RITUXAN and RITUXAN HYCELA collectively as RITUXAN.

 Our share of the pre-tax co-promotion profits on RITUXAN and GAZYVA and royalty revenues on the sale of 
OCREVUS resulted from an exchange of a license. As we do not have future performance obligations under the 
license or collaboration agreement, revenues are recognized as the underlying sales occur.

Revenues from anti-CD20 therapeutic programs consist of:

(i)   our share of pre-tax profits and losses in the U.S. for RITUXAN and GAZYVA; and

(ii)   other revenues from anti-CD20 therapeutic programs, which primarily consist of our share of pre-tax co-

promotion profits on RITUXAN in Canada and royalty revenues on sales of OCREVUS.  

Pre-tax co-promotion profits on RITUXAN and GAZYVA are calculated and paid to us by Genentech in the U.S. 

Pre-tax co-promotion profits on RITUXAN are calculated and paid to us by the Roche Group in Canada. Pre-tax co-
promotion profits consist of U.S. and Canadian net sales to third-party customers less applicable costs to 
manufacture, third-party royalty expenses, distribution, selling and marketing expenses and joint development 
expenses incurred by Genentech and the Roche Group. Our share of the pre-tax profits on RITUXAN and GAZYVA in 
the U.S. and pre-tax co-promotion profits on RITUXAN in Canada include estimates that are based on information 
received from Genentech and Roche. These estimates are subject to change and actual results may differ. 

For additional information on our relationship with Genentech, please read Note 18, Collaborative and Other 

Relationships, to these consolidated financial statements. 

Other Revenues

Royalty Revenues

We receive royalty revenues on sales by our licensees of 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 other third parties 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. 

Collaborative and Other Relationships

We have a number of significant collaborative and other third-party relationships for revenues and for the 

development, regulatory approval, commercialization and marketing of certain of our products and product 
candidates. Where we are the principal on sales transactions with third parties, we recognize revenues, cost of sales 
and operating expenses on a gross basis in their respective lines in our consolidated statements of income. Where 
we are not the principal on sales transactions with third parties, we record our share of the revenues, cost of sales 
and operating expenses on a net basis in collaborative and other relationships included in other revenues in our 
consolidated statements of income. 

Our development and commercialization arrangements with Genentech and Samsung Bioepis represent 
collaborative arrangements as each party is an active participant in one or more joint operating activities and is 
exposed to significant risks and rewards of these arrangements. These arrangements resulted from an exchange of 
a license and utilize the sales and usage based royalty exception. Therefore, revenues relating to royalties or profit-
sharing amounts received are recognized as the underlying sales occur.

For additional information on our collaboration arrangements with Genentech and Samsung Bioepis, please 

read Note 18, Collaborative and Other Relationships, to these consolidated financial statements.

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

Other Corporate Revenues

We record other corporate revenues primarily from amounts earned under contract manufacturing agreements. 

Revenues under contract manufacturing agreements are recognized when the customer obtains control of the 
product, which may occur at a point in time or over time depending on the terms and conditions of the agreement.

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, foreign currency 
spot rates and option pricing valuation models; and

•  Level 3 — Prices or valuations that require inputs that are both significant to the fair value measurement 

and unobservable.

The majority of our financial assets have been classified as Level 2. Our financial assets (which include our 
cash equivalents, marketable debt securities and certain of our marketable equity securities, derivative contracts 
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 option pricing valuation models. 
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 understanding the models used, obtaining 
market values from other pricing sources and analyzing pricing data in certain instances. The option pricing valuation 
models use assumptions within the model, including the term, stock price volatility, constant maturity risk-free 
interest rate and dividend yield. After completing our validation procedures, we did not adjust or override any fair 
value measurements provided by our pricing services as of December 31, 2019 and 2018.

Other Assets and Liabilities

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

anti-CD20 therapeutic programs, other current assets, accounts payable and accrued expenses and other, 
approximate fair value due to their short-term maturities.

Cash and Cash Equivalents

We consider only those investments that 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, 2019 and 2018, cash equivalents 
were comprised of money market funds, 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 and other third-party distributors, public hospitals, pharmacies and other government entities and have 
standard payment terms that generally require payment within 30 to 90 days.

We do not adjust our receivables for the effects of a significant financing component at contract inception if we 

expect to collect the receivables in one year or less from the time of sale.

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 assessed whether the 
customer has a significant financing component and 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 

F- 13

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

income on these receivables, which is recorded as a component of other income (expense), net in our consolidated 
statements of income.

We provide reserves against accounts receivable 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.

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. We monitor the financial performance and creditworthiness of our customers so that we 
can properly assess and respond to changes in their credit profile. We continue to monitor these conditions and 
assess their possible impact on our business. 

Marketable Securities and Other Investments

Marketable Debt Securities

Available-for-sale marketable 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 and Venture Capital Funds

Our marketable equity securities are recorded at fair market value and, beginning January 1, 2018, unrealized 

gains and losses are included in other income (expense), net in our consolidated statements of income. Prior to 
January 1, 2018, unrealized gains and losses were included in accumulated other comprehensive income (loss) in 
equity, net of related tax effects. Our marketable equity securities represent investments in publicly traded equity 
securities and are included in investments and other assets in our consolidated balance sheets. 

Our investments in venture capital funds are recorded at net asset value, which approximates fair value, and, 

beginning January 1, 2018, unrealized gains and losses are included in other income (expense), net in our 
consolidated statements of income. Prior to January 1, 2018, these investments were accounted for under the cost 
method of accounting. The underlying investments of the venture capital funds in which we invest are in equity 
securities of certain biotechnology companies and are included in investments and other assets in our consolidated 
balance sheets.

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 equity method of accounting or the cost 
minus impairment adjusted for changes in observable prices, depending on our ownership percentage and other 
factors that suggest we have significant influence. We monitor these investments to evaluate whether any increase 
or decline in their value has occurred, based on the implied value of recent company financings, public market prices 
of comparable companies and general market conditions. These investments are included in investments and other 
assets in our consolidated balance sheets.

Evaluating Marketable Debt Securities 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. An unrealized loss exists when the current fair 

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

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 in earnings as an impairment loss.

Regardless of our intent to sell a security, we perform additional analysis on all securities with unrealized 
losses to evaluate losses associated with the creditworthiness of the security. Credit losses are identified where we 
do not expect to receive cash flows sufficient to recover the amortized cost basis of a security.

Equity Method of Accounting

In circumstances where we have the ability to exercise significant influence over the operating and financial 

policies of a company in which we have an investment, we utilize the equity method of accounting for recording 
investment activity. In assessing whether we exercise significant influence, we consider the nature and magnitude of 
our investment, the voting and protective rights we hold, any participation in the governance of the other company 
and other relevant factors such as the presence of a collaborative or other business relationship. Under the equity 
method of accounting, we record in our consolidated statements of income our share of income or loss of the other 
company. If our share of losses exceeds the carrying value of our investment, we will suspend recognizing additional 
losses and will continue to do so unless we commit to providing additional funding. 

Inventory

Inventories are stated at the lower of cost or net realizable value with cost based on the first-in, first-out 

method. We classify our inventory costs as long-term when we expect to utilize the inventory beyond our normal 
operating cycle and include these costs in investments and other assets in our consolidated balance sheets. 
Inventory that can be used in either the production of clinical or commercial products is expensed as research and 
development costs when identified for use in a clinical manufacturing campaign.

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

At each reporting period we review our inventories for excess or obsolescence and write-down obsolete or 
otherwise unmarketable inventory to its estimated net realizable value. If the actual net realizable value is less than 
that estimated by us, or if it is determined that inventory utilization will further diminish based on estimates of 
demand, additional inventory write-downs may be required. Additionally, our products are subject to strict quality 
control and monitoring that we perform throughout the manufacturing process. In the event that certain batches or 
units of product no longer meet quality specifications, we will record a charge to cost of sales to write-down any 
unmarketable inventory to its estimated net realizable value. In all cases, product inventory is carried at the lower of 

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

cost or its estimated net realizable value. Amounts written-down due to unmarketable inventory are charged to cost 
of sales.

Property, Plant and Equipment

Property, plant and equipment are carried at cost, subject to reviews 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 in our consolidated balance sheets and include any resulting gain or loss in 
our consolidated statements of income.

Leases

In February 2016 the FASB issued ASU No. 2016-02, Leases (Topic 842), a new standard issued to increase 
transparency and comparability among organizations related to their leasing activities. This standard established a 
right-of-use model that requires all lessees to recognize right-of-use assets and lease liabilities on their balance 
sheet that arise from leases as well as provide disclosures with respect to certain qualitative and quantitative 
information related to a company's leasing arrangements to meet the objective of allowing users of financial 
statements to assess the amount, timing and uncertainty of cash flows arising from leases.

The FASB subsequently issued the following amendments to ASU 2016-02 that have the same effective date 
and transition date: ASU No. 2018-01, Leases (Topic 842): Land Easement Practical Expedient for Transition to Topic 
842, ASU No. 2018-10, Codification Improvements to Topic 842, Leases, ASU No. 2018-11, Leases (Topic 842): 
Targeted Improvements, ASU No. 2018-20, Narrow-Scope Improvement for Lessors, and ASU No. 2019-01, Leases 
(Topic 842): Codification Improvements. We adopted these amendments with ASU 2016-02 (collectively, the new 
leasing standards) effective January 1, 2019.

We adopted the new leasing standards using the modified retrospective transition approach, as of January 1, 

2019, with no restatement of prior periods or cumulative adjustment to retained earnings. Upon adoption, we elected 
the package of transition practical expedients, which allowed us to carry forward prior conclusions related to whether 
any expired or existing contracts are or contain leases, the lease classification for any expired or existing leases and 
initial direct costs for existing leases. We also elected the practical expedient to not reassess certain land 

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

easements and made an accounting policy election to not recognize leases with an initial term of 12 months or less 
within our consolidated balance sheets and to recognize those lease payments on a straight-line basis in our 
consolidated statements of income over the lease term. Upon adoption of the new leasing standards we recognized 
an operating lease asset of approximately $463.0 million and a corresponding operating lease liability of 
approximately $526.0 million, which are included in our consolidated balance sheets. The adoption of the new 
leasing standards did not have an impact on our consolidated statements of income.

We determine if an arrangement is a lease at contract inception. Operating lease assets represent our right to 

use an underlying asset for the lease term and operating lease liabilities represent our obligation to make lease 
payments arising from the lease. Operating lease assets and liabilities are recognized at the commencement date of 
the lease based upon the present value of lease payments over the lease term. When determining the lease term, 
we include options to extend or terminate the lease when it is reasonably certain that we will exercise that option.

We use the implicit rate when readily determinable and use our incremental borrowing rate when the implicit 

rate is not readily determinable based upon the information available at the commencement date in determining the 
present value of the lease payments. Our incremental borrowing rate is determined using a secured borrowing rate 
for the same currency and term as the associated lease.

The lease payments used to determine our operating lease assets may include lease incentives, stated rent 

increases and escalation clauses linked to rates of inflation when determinable and are recognized in our operating 
lease assets in our consolidated balance sheets. Our lease agreements may include both lease and non-lease 
components, which we account for as a single lease component when the payments are fixed. Variable payments 
included in the lease agreement are expensed as incurred. For certain equipment leases, such as vehicles, we apply 
a portfolio approach to effectively account for the operating lease assets and liabilities.

Our operating leases are reflected in operating lease assets, accrued expenses and other and in long-term 

operating lease liabilities in our consolidated balance sheets. Lease expense for minimum lease payments is 
recognized on a straight-line basis over the lease term.

We also have real estate lease agreements which are subleased to third parties. Operating leases for which we 

are the sublessor are included in accrued expenses and other and other long-term liabilities in our consolidated 
balance sheets. We recognize sublease income on a straight-line basis over the lease term in our consolidated 
statements of income.

For additional information on the adoption of the new leasing standards, please read Note 11, Leases, to these 

consolidated financial statements.

Intangible Assets

Our intangible assets consist of completed technology (comprised of acquired and in-licensed rights and 
patents, developed technology, out-licensed patents), in-process research and development (IPR&D) 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 within amortization and impairment 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. Acquired and in-licensed rights and 
patents also include our rest of world license to Forward Pharma A/S' (Forward Pharma) intellectual property, 
including Forward Pharma's intellectual property related to TECFIDERA, and other amounts related to our other 
marketed products and other programs acquired through business combinations. 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 our TYSABRI, AVONEX, 
SPINRAZA, VUMERITY and TECFIDERA (rest of world) products using the economic consumption method based on 
revenues generated from the products underlying the related intangible assets. An analysis of the anticipated 

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

lifetime revenues of our TYSABRI, AVONEX, SPINRAZA, VUMERITY and TECFIDERA (rest of world) products is 
performed annually during our long-range planning cycle and whenever events or changes in circumstances would 
significantly affect the anticipated lifetime revenues of our TYSABRI, AVONEX, SPINRAZA, VUMERITY and TECFIDERA 
(rest of world) products.

Intangible assets related to trademarks, trade names and IPR&D 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 revenues from the projects and 
discounting the net cash flows to present value. The revenues and costs projections used to value acquired IPR&D 
are, as applicable, reduced based on the probability of success of developing a new drug. Additionally, the 
projections consider the relevant market sizes and growth factors, expected trends in technology and the nature and 
expected timing of new product introductions by us and our competitors. The rates utilized to discount the net cash 
flows to their present value are commensurate with the stage of development of the projects and uncertainties in the 
economic estimates used in the projections. Upon the acquisition of IPR&D, we complete an assessment of whether 
our acquisition constitutes the purchase of a single asset or a group of assets. We consider multiple factors in this 
assessment, including the nature of the technology acquired, the presence or absence of separate cash flows, the 
development process and stage of completion, quantitative significance and our rationale for entering into the 
transaction.

If we acquire a business as defined under applicable accounting standards, then the acquired IPR&D is 

capitalized as an intangible asset. If we acquire an asset or group of assets that do not meet the definition of a 
business under applicable accounting standards, 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. Changes in estimates and assumptions used in determining the fair value of our 
acquired IPR&D could result in an impairment. Impairments are recorded within amortization and impairment of 
acquired intangible assets in our consolidated statements of income. Assets that have been previously impaired, 
including our vixotrigine (BIIB074) program for the potential treatment of neuropathic pain, such as trigeminal 
neuralgia (TGN), could become further impaired in the future.

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 is reviewed for impairment. Goodwill is reviewed for impairment annually, as of October 31, and whenever events 
or changes in circumstances indicate that the carrying value of the goodwill may not be recoverable.

We compare the fair value of our reporting unit to its carrying value. If the carrying value of the net assets 
assigned to the reporting unit exceeds the fair value of our reporting unit, we would record an impairment loss equal 
to the difference. As described in Note 24, Segment Information, to these consolidated financial statements, we 
operate in one operating segment, which is our only reporting unit.

Impairment of Long-Lived Assets

Long-lived assets to be held and used, including property, plant and equipment, and definite-lived intangible 

assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount 
of the assets or asset group may not be recoverable.

Determination of recoverability is based on an estimate of undiscounted future cash flows resulting from the 

use of the asset and its eventual disposition. In the event that such cash flows are not expected to be sufficient to 
recover the carrying amount of the assets, the assets are written-down to their fair values. Long-lived assets to be 
disposed of are carried at fair value less costs to sell.

F- 18

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

Contingent Consideration

The consideration for our acquisitions often includes future payments that are contingent upon the occurrence 
of a particular event or events. We record an obligation for such contingent payments at fair value on the acquisition 
date. We estimate the fair value of contingent consideration obligations through valuation models that incorporate 
probability-adjusted assumptions related to the achievement of the milestones and thus likelihood of making related 
payments. We revalue our contingent consideration obligations each reporting period. Changes in the fair value of 
our contingent consideration obligations are recognized in our consolidated statements of income. Changes in the 
fair value of the contingent consideration obligations can result from changes to one or multiple inputs, including 
adjustments to the discount rates, changes in the amount or timing of expected expenditures associated with 
product development, changes in the amount or timing of cash flows and reserves associated with products upon 
commercialization, changes in the assumed achievement or timing of any cumulative sales-based and development 
milestones, changes in the probability of certain clinical events and changes in the assumed probability associated 
with regulatory approval. 

Discount rates in our valuation models represent a measure of the credit risk associated with settling the 
liability. The period over which we discount our contingent obligations is based on the current development stage of 
the product candidates, our specific development plan for that product candidate adjusted for the probability of 
completing the development step and when the contingent payments would be triggered. In estimating the probability 
of success, we utilize data regarding similar milestone events from several sources, including industry studies and 
our own experience. These fair value measurements are based on significant inputs not observable in the market. 
Significant judgment is employed in determining the appropriateness of these assumptions as of the acquisition 
date and for each subsequent period. 

Derivative Instruments and Hedging Activities

Cash Flow and Fair Value Derivative Instruments

We recognize all derivative instruments as either assets or liabilities at fair value in our consolidated balance 

sheets. Changes in the fair value of our derivative instruments are recognized each period in current earnings or 
accumulated other comprehensive income (loss), depending on whether the derivative instrument 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 at inception and on an ongoing basis, whether the derivative instruments that are used in hedging 

transactions are highly effective in offsetting the changes in cash flows or fair values of the hedged items. We 
exclude the forward points portion of the derivative instruments used in a hedging transaction from the effectiveness 
test and record the fair value gain or loss related to this portion each period in our consolidated statements of 
income in the same line as the underlying hedged item. 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.

Net Investment Derivative Instruments

We are exposed to the impact of foreign exchange fluctuations on our investment in the equity of Samsung 
Bioepis, which is denominated in a currency other than the U.S. dollar, and could adversely impact the U.S. dollar 
value of this investment. Using derivative instruments, we have hedged our net investment position to mitigate the 
effects of foreign exchange fluctuations. We recognize these designated net investment hedges as either assets or 
liabilities, at fair value, in our consolidated balance sheets. We hedge the changes in the spot exchange rate in 
accumulated other comprehensive income (loss) and exclude changes to the forward rate and amortize the forward 
points in other income (expense), net in our consolidated statements of income over the term of the contract. We 
classify the cash flows from these instruments in the same category as the cash flows from the hedged items.

For additional information on our derivative instruments and hedging activities, please read Note 9, Derivative 

Instruments, to these consolidated financial statements.

Translation of Foreign Currencies

The functional currency for most of our foreign subsidiaries is their local currency. For our non-U.S. subsidiaries 
that transact in a functional currency other than the U.S. dollar, assets and liabilities are translated at current rates 
of exchange at the balance sheet date. Income and expense items are translated at the average foreign currency 

F- 19

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

exchange rates for the period. Adjustments resulting from the translation of the financial statements of our foreign 
operations into U.S. dollars are excluded from the determination of net income and are recorded in accumulated 
other comprehensive income, a separate component of equity. For subsidiaries where the functional currency of the 
assets and liabilities differ from the local currency, non-monetary assets and liabilities are translated at the rate of 
exchange in effect on the date assets were acquired while monetary assets and liabilities are translated at current 
rates of exchange as of the balance sheet date. Income and expense items are translated at the average foreign 
currency rates for the period. Translation adjustments of these subsidiaries are included in other income (expense), 
net in our consolidated statements of income.

Royalty Cost of Sales

We make royalty payments to a number of third parties under license or purchase agreements associated with 
our acquisition of intellectual property. These royalty payments are typically calculated as a percentage (royalty rate) 
of the sales of our products in a particular year. That royalty rate may remain constant, increase or decrease within 
each year based on the total amount of sales during the annual period. Each quarterly period, we estimate our total 
royalty obligation for the full year and recognize the proportional amount as cost of sales based on actual quarterly 
sales as a percentage of full year estimated sales. For example, if the level of net sales in any calendar year 
increases the royalty rate within the year, we will record our cost of sales at an even rate over the year, based on the 
estimated blended royalty rate. 

Accounting for Share-Based Compensation

Our share-based compensation programs grant awards that have included stock options, restricted stock units 

that vest based on stock performance known as market stock units (MSUs), performance-vested restricted stock 
units that settle in cash (CSPUs), time-vested restricted stock units (RSUs), performance-vested restricted stock 
units that can be settled in cash or shares of our common stock (PUs) at the sole discretion of the Compensation 
and Management Development Committee of our Board of Directors, performance-vested stock units that settle in 
stock or cash (PSUs) and shares issued under our employee stock purchase plan (ESPP). Compensation expense is 
recognized based on the estimated fair value of the awards at grant date. We recognize compensation expense for 
the number of awards expected to vest after taking into consideration an estimate of award forfeitures over the 
requisite service period, which is generally the vesting period. Where awards are made with non-substantive vesting 
periods (for instance, where a portion of the award vests upon retirement eligibility), we estimate and recognize 
expense based on the period from the grant date to the date the employee becomes retirement eligible.

The fair values of our 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 
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, PUs and PSUs that settle in cash, and the fair value of the liability is remeasured at the end of each 
reporting period through expected settlement. Compensation expense associated with CSPUs, PUs and PSUs that 
settle in cash 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 targeted payout level associated with the 
performance criteria expected to be achieved. 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. If performance criteria are not met or not expected to be met, any compensation expense 
previously recognized to date associated with the awards will be reversed.

The fair values of PSUs that settle in stock are based upon the stock price on the date of grant. Compensation 

expense is recognized for the number of units expected to be earned after assessing the probability that certain 
performance criteria will be met and the targeted payout level associated with the performance criteria expected to 
be achieved. Cumulative adjustments are recorded each quarter to reflect the estimated outcome of the 
performance-related conditions until the date results are determined and settled. If performance criteria are not met 
or not expected to be met, any compensation expense previously recognized to date associated with the awards will 
be reversed.

F- 20

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

Research and Development Expenses

Research and development expenses consist of 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 and upfront fees and milestones paid to third-party collaborators. Research and 
development expenses are expensed as incurred. Upfront and milestone payments made to third-party collaborators 
are expensed as incurred up to the point of regulatory approval. Milestone payments made upon regulatory approval 
are capitalized and amortized over the remaining useful life of the related product. Payments we make for research 
and development services prior to the services being rendered are recorded as prepaid assets in our consolidated 
balance sheets and are expensed as the services are provided. We also accrue the costs of ongoing clinical trials 
associated with programs that have been terminated or discontinued for which there is no future economic benefit at 
the time the decision is made to terminate or discontinue the program.

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 18, Collaborative and Other 
Relationships, to these consolidated financial statements. Because an initial indication has been approved for both 
RITUXAN and GAZYVA, expenses incurred by Genentech in the ongoing development of RITUXAN and GAZYVA are not 
recorded as research and development expense, but rather reduce our share of profits recorded as a component of 
revenues from anti-CD20 therapeutic programs.

For collaborations with commercialized products, if we are the principal, we record revenues and the 

corresponding operating costs in their respective line items in our consolidated statements of income. If we are not 
the principal, we record operating costs as a reduction of revenue.

Selling, General and Administrative Expenses

Selling, general and administrative expenses are primarily comprised of compensation and benefits associated 

with sales and marketing, finance, human resources, legal, information technology and other administrative 
personnel, outside marketing, advertising and legal expenses and other general and administrative costs.

Advertising costs are expensed as incurred. For the years ended December 31, 2019, 2018 and 2017, 

advertising costs totaled $79.2 million, $90.2 million and $75.2 million, respectively.

Income Taxes

The provision for income taxes includes federal, state, local and foreign taxes. Income taxes are accounted for 

under the asset and 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. We recognize deferred taxes associated with our global intangible low-taxed 
income (GILTI) tax calculations.

The income tax consequences from the intra-entity transfers of inventory within our consolidated group, both 

current and deferred, are recorded as a prepaid tax or deferred charge and recognized through our consolidated 
statements of income when the inventory is sold to a third party.

In October 2016 the FASB issued ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity Transfer of Assets 
Other Than Inventory. This standard eliminates the deferral of the tax effects of intra-entity asset transfers other than 
inventory. As a result, the income tax consequences from the intra-entity transfer of an asset other than inventory 
and associated changes to deferred taxes will be recognized when the transfer occurs.

We adopted this standard on January 1, 2018, using the modified retrospective method, through a cumulative-

effect adjustment to retained earnings as of that date. Upon adoption, we recognized additional net deferred tax 
assets of approximately $0.5 billion, offset by a corresponding net increase to retained earnings of 
approximately $0.5 billion. In the fourth quarter of 2018, when we elected to begin recognizing deferred taxes on the 
GILTI tax calculation, we recorded an additional deferred tax liability of $0.4 billion with a corresponding reduction to 

F- 21

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

our retained earnings as these differences are related to intra-entity transactions. We will recognize incremental 
deferred income tax expense thereafter as these deferred tax assets and liabilities are utilized.

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 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. 

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. Diluted earnings per share is computed 
based on the treasury method by dividing net income by the weighted-average number of common shares 
outstanding during the period plus potentially dilutive common equivalent shares outstanding.

New Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the FASB or other standard setting bodies 

that we adopt as of the specified effective date. Unless otherwise discussed below, we do not believe that the 
adoption of recently issued standards have or may have a material impact on our consolidated financial statements 
or disclosures.

Leases

In February 2016 the FASB issued the new leasing standards to increase transparency and comparability 
among organizations related to their leasing activities. For additional information on the adoption of the new leasing 
standards, please read the section titled Lease above, and Note 11, Leases, to these consolidated financial 
statements.

Credit Losses

In June 2016 the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): 
Measurement of Credit Losses on Financial Instruments. The FASB subsequently issued amendments to ASU 
2016-13, which have the same effective date and transition date of January 1, 2020. These standards require that 
credit losses be reported using an expected losses model rather than the incurred losses model that is currently 
used, and establishes additional disclosures related to credit risks. For available-for-sale debt securities with 
unrealized losses, these standards now require allowances to be recorded instead of reducing the amortized cost of 
the investment. These standards limit the amount of credit losses to be recognized for available-for-sale debt 
securities to the amount by which carrying value exceeds fair value and requires the reversal of previously recognized 
credit losses if fair value increases.

Based on the composition of our investment portfolio, accounts receivable and other financial assets, current 

market conditions and historical credit loss activity, the adoption of these standards are not expected to have a 
material impact on our consolidated financial position and results of operations and related disclosures.

F- 22

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

Debt Securities

In March 2017 the FASB issued ASU No. 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 
310-20): Premium Amortization on Purchased Callable Debt Securities. This standard amends the amortization period 
for certain purchased callable debt securities held at a premium by shortening the amortization period to the earliest 
call date. This standard became effective for us on January 1, 2019, and was adopted using a modified retrospective 
transition approach. The adoption of this standard did not result in a significant adjustment to our marketable debt 
securities.

Fair Value Measurements

In August 2018 the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - 

Changes to the Disclosure Requirements for Fair Value Measurement. This standard modifies certain disclosure 
requirements on fair value measurements. This standard became effective for us on January 1, 2020. The adoption 
of this standard will not have a material impact on our disclosures.

Derivative Instruments and Hedging Activities

In October 2018 the FASB issued ASU No. 2018-16, Derivatives and Hedging (Topic 815): Inclusion of the 

Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge 
Accounting Purposes. This standard permits use of the OIS rate based on the SOFR as a U.S. benchmark interest 
rate for hedge accounting purposes under ASC 815, Derivatives and Hedging. This standard became effective for us 
on January 1, 2019, and did not have an impact on our consolidated results of operations or financial position.

Collaborative Arrangements

In November 2018 the FASB issued ASU No. 2018-18, Collaborative Arrangements (Topic 808): Clarifying the 

Interaction between Topic 808 and Topic 606. This standard makes targeted improvements for collaborative 
arrangements as follows: 

•  Clarifies that certain transactions between collaborative arrangement participants should be accounted for 
as revenue under ASC 606, Revenue from Contracts with Customers, when the collaborative arrangement 
participant is a customer in the context of a unit of account. In those situations, all the guidance in ASC 
606 should be applied, including recognition, measurement, presentation and disclosure requirements; 

•  Adds unit-of-account guidance to ASC 808, Collaborative Arrangements, to align with the guidance in ASC 

606 (that is, a distinct good or service) when an entity is assessing whether the collaborative arrangement 
or a part of the arrangement is within the scope of ASC 606; and

•  Precludes a company from presenting transactions with collaborative arrangement participants that are not 

directly related to sales to third parties with revenue recognized under ASC 606 if the collaborative 
arrangement participant is not a customer. 

This standard became effective for us on January 1, 2020. A retrospective transition approach is required for 
either all contracts or only for contracts that are not completed at the date of initial application of ASC 606, with a 
cumulative adjustment to opening retained earnings, as of January 1, 2018. The adoption of this standard did not 
have a material impact on our consolidated financial position, results of operations and related disclosures.

2.      Acquisitions

Acquisition of Nightstar Therapeutics plc

In June 2019 we completed our acquisition of all of the outstanding shares of Nightstar Therapeutics plc (NST), 

a clinical-stage gene therapy company focused on adeno-associated virus treatments for inherited retinal disorders. 
As a result of this acquisition, we added two mid- to late-stage clinical assets, as well as preclinical programs, in 
ophthalmology. These assets include BIIB111 (timrepigene emparvovec), which is in Phase 3 development for the 
potential treatment of choroideremia, a rare, degenerative, X-linked inherited retinal disorder that leads to blindness 
and currently has no approved treatments, and BIIB112 (RPGR gene therapy), which is in Phase 2/3 development for 
the potential treatment of X-linked retinitis pigmentosa, which is a rare inherited retinal disease with no currently 
approved treatments.

F- 23

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

Under the terms of the acquisition, we paid NST shareholders $25.50 in cash for each issued and outstanding 
NST share, which totaled $847.6 million. In addition, we paid $4.6 million in cash for equity compensation, which is 
attributable to pre-combination services and is reflected as a component of the total purchase price paid. The fair 
value of equity compensation attributable to the post-combination service period was $26.2 million, of which $18.4 
million was recognized as a charge to selling, general and administrative expense with the remaining $7.8 million as 
a charge to research and development expense in our consolidated statements of income. These amounts were 
associated with the accelerated vesting of stock options previously granted to NST employees and were fully paid in 
cash as of June 30, 2019. We funded this acquisition through available cash and accounted for it as an acquisition 
of a business. 

We finalized purchase accounting for this acquisition in the fourth quarter of 2019. The following table 

summarizes the fair values of the separately identifiable assets acquired and liabilities assumed:

(In millions)
Cash and cash equivalents

Marketable securities

In-process research and development intangible assets

Goodwill

Deferred tax liability

Other, net

Total purchase price

$

$

107.8

7.5

700.0

117.5

(81.9)

1.3

852.2

The fair value of the IPR&D programs acquired was determined through a probability adjusted discounted cash 

flow analysis utilizing a discount rate of 12.5%. This valuation was primarily driven by the value associated with 
BIIB111. The fair value associated with BIIB111 was $480.0 million. We have recorded an additional IPR&D asset 
related to BIIB112 of $220.0 million. Some of the more significant assumptions utilized in our asset valuations 
included the estimated net cash flows for each year for each asset or product, including net revenues, cost of sales, 
research and development and other operating expenses, the potential regulatory and commercial success risks, 
competitive trends impacting the asset and each cash flow stream as well as other factors. These fair value 
measurements were based on significant inputs not observable in the market and thus represent Level 3 fair value 
measurements. 

We have recognized goodwill in relation to the fair value associated with NST workforce's expertise and early 
research in retinal disorders. We also recognized goodwill in relation to the establishment of a deferred tax liability 
for the acquired IPR&D intangible assets, which have no tax basis. This deferred tax liability is net of the related 
impacts on the deferred taxes for GILTI. Goodwill that is tax deductible for GILTI purposes is approximately $35.5 
million.

Pro forma results of operations as a result of this acquisition have not been presented as this acquisition is 

not material to our consolidated statements of income. Subsequent to June 7, 2019, the acquisition date, our 
results of operations include the results of operations of NST.

BIIB100 Acquisition

In January 2018 we acquired BIIB100 (XP01 inhibitor) from Karyopharm Therapeutics Inc. (Karyopharm). 
BIIB100 is a Phase 1 investigational oral compound for the treatment of certain neurological and neurodegenerative 
diseases, primarily in ALS. BIIB100 is a novel therapeutic candidate that works by inhibiting a protein known as 
XPO1, with the goal of reducing inflammation and neurotoxicity, along with increasing neuroprotective responses.

We accounted for this transaction as an asset acquisition as the value being acquired primarily relates to a 
single asset. In connection with the closing of this transaction, we made an upfront payment of $10.0 million to 
Karyopharm, which was recorded as acquired IPR&D in our consolidated statements of income as BIIB100 had not 
yet reached technological feasibility. We may also pay Karyopharm up to $207.0 million in additional milestone 
payments as well as tiered royalties on potential net commercial sales in the mid-single digit to low-teen 
percentages. 

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

BIIB104 Acquisition

In April 2018 we acquired BIIB104 (AMPA) from Pfizer Inc. (Pfizer). BIIB104 is a first-in-class, Phase 2b ready 

AMPA receptor potentiator for cognitive impairment associated with schizophrenia. AMPA receptors mediate fast 
excitatory synaptic transmission in the central nervous system, a process which can be disrupted in a number of 
neurological and psychiatric diseases, including schizophrenia. 

We accounted for this transaction as an asset acquisition as the value being acquired primarily relates to a 
single asset. In connection with the closing of this transaction, we made an upfront payment of $75.0 million to 
Pfizer, which was recorded as acquired IPR&D in our consolidated statements of income as BIIB104 had not yet 
reached technological feasibility. We may also pay Pfizer up to $515.0 million in additional development and 
commercialization milestone payments as well as tiered royalties on potential net commercial sales in the low to 
mid-teen percentages. 

TMS Co., Ltd.

In June 2018 we entered into an exclusive option agreement with TMS Co., Ltd. (TMS) granting us the option to 

acquire TMS-007, a plasminogen activator with a novel mechanism of action associated with breaking down blood 
clots, which is in Phase 2 development in Japan, and backup compounds for the treatment of stroke. In exchange for 
the purchase option, we made a $4.0 million upfront payment to TMS, which was recorded as research and 
development expense in our consolidated statements of income as TMS-007 had not yet reached technological 
feasibility. 

If we exercise the purchase option, we will make an additional payment of $18.0 million upon closing of the 

asset acquisition, which will be recorded as acquired IPR&D expense in our consolidated statements of income as 
TMS-007 will not have reached technological feasibility at that time. In addition, we may pay TMS up to $335.0 
million in additional development and commercialization milestone payments as well as tiered royalties on potential 
net commercial sales in the high-single digit to low-teen percentages. If we exercise the purchase option, 
consummation of the asset acquisition may be subject to the expiration of the applicable waiting period under the 
Hart-Scott-Rodino Antitrust Improvements Act of 1976 in the U.S.

BIIB110 Acquisition

In July 2018 we acquired BIIB110 (ActRIIA/B ligand trap) and ALG-802 from AliveGen Inc. (AliveGen). BIIB110 
and ALG-802 represent novel ways of targeting the myostatin pathway. We initially plan to study BIIB110 in multiple 
neuromuscular indications, including SMA and ALS. 

We accounted for this transaction as an asset acquisition as the value being acquired primarily relates to a 
single asset. In connection with the closing of this transaction, we made an upfront payment of $27.5 million to 
AliveGen, which was recorded as acquired IPR&D in our consolidated statements of income as BIIB110 had not yet 
reached technological feasibility. We may also pay AliveGen up to $535.0 million in additional development and 
commercialization milestones.

BIIB093 Acquisition

In May 2017 we acquired BIIB093 (glibencamide IV) from Remedy Pharmaceuticals Inc. (Remedy). BIIB093 is in 

a Phase 3 study for large hemispheric infarction (LHI), a severe form of ischemic stroke where brain swelling 
(cerebral edema) often leads to a disproportionately large share of stroke-related morbidity and mortality. The U.S. 
Food and Drug Administration (FDA) granted BIIB093 orphan drug designation for severe cerebral edema in patients 
with acute ischemic stroke. The FDA has also granted BIIB093 fast track designation. 

We are responsible for the future development and commercialization of BIIB093 and Remedy may share in the 

cost of development for the target indication for BIIB093 in LHI stroke.

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

nor did we acquire any significant processes required in the development of BIIB093. In connection with the closing 
of this transaction, we made an upfront payment of $120.0 million to Remedy, which was recorded as acquired 
IPR&D in our consolidated statements of income as BIIB093 had not yet reached technological feasibility. We may 
also pay Remedy certain development and sales based milestone payments that are substantially payable upon or 
after regulatory approval, as well as royalties on potential net commercial sales. 

F- 25

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

3. 

Divestitures

Divestiture of Hillerød, Denmark Manufacturing Operations 

In August 2019 we completed the sale of all of the outstanding shares of our subsidiary that owned our 
biologics manufacturing operations in Hillerød, Denmark to FUJIFILM Corporation (FUJIFILM). Upon the closing of this 
transaction, we received approximately $881.9 million in cash, which may be adjusted based on other contractual 
terms, which are discussed below. We determined that the operations disposed of in this transaction did not meet 
the criteria to be classified as discontinued operations under the applicable guidance.

As part of this transaction, we have provided FUJIFILM with certain minimum batch production commitment 
guarantees. There is a risk that the minimum contractual batch production commitments will not be met. Based 
upon current estimates we expect to incur an adverse commitment obligation of approximately $74.0 million 
associated with such guarantees and have accrued for this obligation. We may adjust this estimate based upon 
changes in business conditions, which may result in the increase or reduction of this adverse commitment obligation 
in subsequent periods. We also may be obligated to indemnify FUJIFILM for liabilities that existed relating to certain 
business activities incurred prior to the closing of this transaction.

In addition, we may earn certain contingent payments based on future manufacturing activities at the Hillerød 
facility. For the disposition of a business, our policy is to recognize contingent consideration when the consideration 
is realizable. We currently believe the probability of earning these payments is remote and therefore we did not 
include these contingent payments in our calculation of the fair value of the operations.

As part of this transaction, we entered into certain manufacturing services agreements with FUJIFILM pursuant 

to which FUJIFILM will use the Hillerød facility to produce commercial products for us, such as TYSABRI, as well as 
other third-party products. 

In connection with this transaction, we recognized a total net loss of approximately $164.4 million in our 
consolidated statements of income. This loss included a pre-tax loss of $95.5 million, which was recorded in loss on 
divestiture of Hillerød, Denmark manufacturing operations. The loss recognized was based on exchange rates and 
business conditions on the closing date of this transaction, and included costs to sell our Hillerød, Denmark 
manufacturing operations of approximately $11.2 million and our estimate of the fair value of an adverse 
commitment of approximately $114.0 million associated with the guarantee of future minimum batch production at 
the Hillerød facility. The value of this adverse commitment was determined using a probability-weighted estimate of 
future manufacturing activity. We also recorded a tax expense of $68.9 million related to this transaction. During the 
fourth quarter of 2019 we recorded a $40.2 million reduction in our estimate of the future minimum batch 
commitment utilizing our current manufacturing forecast, which reflects the impact of forecasted aducanumab 
batches, resulting in a reduction in the pre-tax loss on divestiture from $95.5 million to $55.3 million.

In addition, we sold to FUJIFILM $41.8 million of raw materials that were remaining at the Hillerød facility on the 

closing date of this transaction. These materials were sold at cost, which approximates fair value.

Our estimate of the fair value of the adverse commitment is a Level 3 measurement and is based on 

forecasted batch production at the Hillerød facility.

F- 26

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

4.    Revenues

Product Revenues

Revenues by product are summarized as follows:

United
States

2019

Rest of
World

Total

United
States

2018

Rest of
World

Total

United
States

2017

Rest of
World

Total

For the Years Ended December 31,

$ 3,306.5
1,426.6

$ 1,126.2
675.2

1,041.8

850.4

5.5
—

—

—

97.1
—

$ 4,432.7

2,101.8

1,892.2
5.5

97.1

—

$ 3,253.2
1,668.3

1,025.0

—

—

—

$ 1,020.9

$ 4,274.1

$ 3,294.0

$

920.0

$ 4,214.0

694.7

839.0

—

92.7

1.4

2,363.0

1,864.0

1,889.1

1,113.8

—

92.7

1.4

—

—

—

756.7

859.3

—

91.6

52.7

2,645.8

1,973.1

—

91.6

52.7

5,780.4

2,748.9

8,529.3

5,946.5

2,648.7

8,595.2

6,296.9

2,680.3

8,977.2

933.4

1,163.6

2,097.0

854.0

870.2

1,724.2

657.0

226.7

883.7

—

—

—

—

—

—

—

—

486.2

184.0

68.1

486.2

184.0

68.1

738.3

738.3

15.2

15.2

—

—

—

—

—

—

—

—

—

—

—

—

—

—

485.2

16.7

43.2

485.2

16.7

43.2

545.1

545.1

22.3

22.3

—

—

—

—

—

—

—

—

—

—

—

370.8

370.8

—

9.0

—

9.0

379.8

379.8

39.6

39.6

42.2

21.0

6.2

5.0

48.4

26.0

63.2

11.2

74.4

$ 6,713.8

$ 4,666.0

$ 11,379.8

$ 6,800.5

$ 4,086.3

$10,886.8

$ 7,017.1

$ 3,337.6

$10,354.7

(In millions)

Multiple Sclerosis
(MS):

TECFIDERA

Interferon*

TYSABRI

VUMERITY

FAMPYRA

ZINBRYTA

Subtotal: MS
Product Revenues

Spinal Muscular
Atrophy:

SPINRAZA

Biosimilars:

BENEPALI

IMRALDI

FLIXABI

Subtotal:
Biosimilar product
revenues

Other:

FUMADERM

Hemophilia:

ELOCTATE

ALPROLIX

Subtotal:
Hemophilia product
revenues

Total product
revenues

*Interferon includes AVONEX and PLEGRIDY.

We recognized revenues from two wholesalers accounting for 30% and 17% of gross product revenues in 2019, 
32% and 18% of gross product revenues in 2018 and 34% and 21% of gross product revenues in 2017, respectively.

As of December 31, 2019, two wholesale distributors individually accounted for approximately 24.1% and 

13.9% of net accounts receivable associated with our product sales, as compared to 27.7% and 15.6% as of 
December 31, 2018, respectively.

F- 27

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

An analysis of the change in reserves for discounts and allowances is summarized as follows:

(In millions)
2019
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)
2018
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)
2017
Beginning balance

Current provisions relating to sales in current year
Adjustments relating to prior years
Payments/returns relating to sales in current year
Payments/returns relating to sales in prior years

Ending balance

Discounts

Contractual
Adjustments

Returns

Total

127.8 $
666.2
0.3
(535.5)
(127.7)
131.1 $

888.8 $

3,011.5
(54.1)
(2,242.9)
(576.0)
1,027.3 $

34.7 $
20.9
5.5
(0.2)
(20.4)
40.5 $

1,051.3
3,698.6
(48.3)
(2,778.6)
(724.1)
1,198.9

Discounts

Contractual
Adjustments

Returns

Total

109.6 $
679.3
(0.3)
(551.7)
(109.1)
127.8 $

606.0 $

2,686.7
(10.0)
(1,887.6)
(506.3)
888.8 $

46.0 $
23.1
(1.8)
(1.1)
(31.5)
34.7 $

761.6
3,389.1
(12.1)
(2,440.4)
(646.9)
1,051.3

Discounts

Contractual
Adjustments

Returns

Total

71.6 $

482.7 $

583.0
(0.1)
(475.8)
(69.1)
109.6 $

2,307.4
15.0
(1,756.9)
(442.2)
606.0 $

51.2 $
26.9
(8.9)
(0.1)
(23.1)
46.0 $

605.5
2,917.3
6.0
(2,232.8)
(534.4)
761.6

$

$

$

$

$

$

The total reserves above, which are 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

Revenues from Anti-CD20 Therapeutic Programs

As of December 31,

2019

2018

$

$

197.8 $

1,001.1
1,198.9 $

176.6
874.7
1,051.3

Revenues from anti-CD20 therapeutic programs are summarized in the table below. For purposes of this 

footnote we refer to RITUXAN and RITUXAN HYCELA collectively as RITUXAN.

(In millions)
Biogen's share of pre-tax profits in the U.S. for RITUXAN
and GAZYVA, including the reimbursement of selling and
development expenses
Other revenues from anti-CD20 therapeutic programs

Total revenues from anti-CD20 therapeutic programs

For the Years Ended December 31,

2019

2018

2017

$

$

1,542.4 $

1,431.9 $

748.0

548.3

2,290.4 $

1,980.2 $

1,316.4

242.8

1,559.2

Approximately 16%, 15% and 13% of our total revenues in 2019, 2018 and 2017, respectively, are derived from 

our collaboration arrangements with Genentech. For additional information on our collaboration arrangements with 
Genentech, please read Note 18, Collaborative and Other Relationships, to these consolidated financial statements.

F- 28

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

Other Revenues

Other revenues are summarized as follows:

(In millions)

Revenues from collaborative and other relationships:
(Loss) profit earned under our 50% share of the co-
promotion losses on ZINBRYTA in the U.S. with AbbVie Inc. $
Revenues earned under our technical development
services and manufacturing service agreements and
royalty revenues on biosimilar products with Samsung
Bioepis
Revenues earned under manufacturing services agreement
on shipments of ELOCTA and ALPROLIX to Swedish Orphan
Biovitrum AB (Sobi) and royalties from Sobi on sales of
ELOCTA and ALPROLIX

Other royalty and corporate revenues:

For the Years Ended December 31,

2019

2018

2017

— $

(8.6) $

(16.9)

106.2

96.4

42.7

—

—

10.7

Royalty
Other corporate

Total other revenues

17.0
584.5

38.7
459.4

$

707.7 $

585.9 $

69.8
253.7

360.0

Other corporate revenues primarily reflect amounts earned under contract manufacturing agreements with our 

strategic customers, including Bioverativ Inc. (Bioverativ). During the years ended December 31, 2019, 2018 and 
2017, we recognized $383.2 million, $206.7 million and $64.8 million, respectively, in revenues under the 
manufacturing and supply agreement with Bioverativ entered into in connection with the spin-off of our hemophilia 
business.

During the third quarter of 2019 we amended our agreement with a contract manufacturing customer. Under 
the amended agreement, we will license certain of our manufacturing-related intellectual property to the customer. 
We will be eligible to receive $500.0 million in a series of three payments. The first payment is due upon a regulatory 
achievement related to the customer's product manufactured using our manufacturing-related intellectual property, 
with subsequent payments payable upon the first and second anniversaries of the regulatory achievement. We 
expect the regulatory achievement to occur in 2020. If we earn this payment, we expect to allocate the consideration 
between the license for the manufacturing-related intellectual property and the manufacturing product supply 
services.

For additional information on our collaboration arrangements with AbbVie Inc. (AbbVie) and Samsung Bioepis, 

please read Note 18, Collaborative and Other Relationships, to these consolidated financial statements.

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,

2019

2018

169.7 $
460.0
174.5
804.2 $

804.2 $
—
804.2 $

196.3
606.7
133.5
936.5

929.9
6.6
936.5

$

$

$

$

F- 29

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

During 2019 we sold to Bioverativ hemophilia-related inventory on hand as of December 31, 2018, with a cost 

basis totaling $184.5 million pursuant to the terms of the manufacturing and supply agreement with Bioverativ 
entered into in connection with the spin-off of our hemophilia business.

Long-term inventory, which primarily consists of work in process, is included in investments and other assets in 

our consolidated balance sheets.

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

charged to cost of sales, and totaled $52.2 million, $41.9 million and $76.9 million for the years ended 
December 31, 2019, 2018 and 2017, respectively. 

Divestiture of Hillerød, Denmark Manufacturing Operations

In August 2019 we completed the sale of all of the outstanding shares of our subsidiary that owned our 
biologics manufacturing operations in Hillerød, Denmark to FUJIFILM. This transaction included the sale of $14.0 
million of work in process inventory.

In addition, we sold to FUJIFILM approximately $41.8 million of raw materials that were remaining at the 
Hillerød facility on the closing date of this transaction. These materials were sold at cost, which approximates fair 
value.

For additional information on the divestiture of our Hillerød, Denmark manufacturing operations, please read 

Note 3, Divestitures, to these consolidated financial statements.

6.     

Intangible Assets and Goodwill

Intangible Assets

Intangible assets, net of accumulated amortization, impairment charges and adjustments are summarized as 

follows:

(In millions)
Completed technology
In-process research
and development
Trademarks and trade
names

Total intangible
assets

As of December 31, 2019

As of December 31, 2018

Accumulated
Amortization

Accumulated
Amortization

Estimated Life

Net
4-28 years $7,379.3 $(4,881.4) $ 2,497.9 $7,187.3 $(4,607.3) $2,580.0

Cost

Cost

Net

Indefinite until
commercialization

965.5

Indefinite

64.0

—

—

965.5

476.0

64.0

64.0

—

—

476.0

64.0

$8,408.8 $(4,881.4) $ 3,527.4 $7,727.3 $(4,607.3) $3,120.0

Amortization and Impairments

Amortization and impairments of acquired intangible assets totaled $489.9 million, $747.3 million and $814.7 

million for the years ended December 31, 2019, 2018 and 2017, respectively. Amortization of acquired intangible 
assets, excluding impairment charges, totaled $274.0 million, $381.2 million and $455.3 million for the years 
ended December 31, 2019, 2018 and 2017, respectively. The decrease in amortization of acquired intangible 
assets, excluding impairment charges, over the three years was primarily due to a lower rate of amortization for 
acquired intangible assets, primarily due to prior year impairments.

For the year ended December 31, 2019, amortization and impairments of acquired intangible assets reflects 

the impact of a $215.9 million impairment charge to reduce the fair value of IPR&D assets associated with 
BG00011 (STX-100) to zero, as discussed below.

Amortization and impairments of acquired intangible assets for the year ended December 31, 2018, reflects 
the impact of impairment charges related to certain IPR&D assets associated with our vixotrigine program totaling 
$189.3 million, as discussed below.

Amortization and impairments of acquired intangible assets for the years ended December 31, 2018 and 2017, 
reflect the impact of impairment charges of $176.8 million and $328.2 million, respectively, related to our intangible 

F- 30

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

assets associated with our U.S. license to Forward Pharma's intellectual property, including Forward Pharma's 
intellectual property related to TECFIDERA. 

Completed Technology

Completed technology primarily relates to our acquisition of all remaining rights to TYSABRI from Elan. The net 

book value of the TYSABRI asset as of December 31, 2019, was $1.8 billion. 

Completed technology also includes $155.0 million in milestone payments made to Alkermes Pharma Ireland 

Limited, a subsidiary of Alkermes plc (Alkermes), following the approval of VUMERITY in the U.S. in October 2019, 
technology related to our AVONEX product, which we recorded in connection with the merger of Biogen, Inc. and IDEC 
Pharmaceuticals Corporation in 2003, our rest of world license to Forward Pharma's intellectual property, including 
Forward Pharma's intellectual property related to TECFIDERA, as discussed below, and other amounts related to our 
other marketed products and other programs acquired through business combinations.

TECFIDERA License Rights

In January 2017 we entered into a settlement and license agreement among Biogen Swiss Manufacturing 
GmbH, Biogen International Holding Ltd., Forward Pharma and certain related parties, which was effective as of 
February 1, 2017. Pursuant to this agreement, we obtained U.S. and rest of world licenses to Forward Pharma's 
intellectual property, including Forward Pharma's intellectual property related to TECFIDERA. In exchange, we paid 
Forward Pharma $1.25 billion in cash, of which $795.2 million was recorded within intangible assets in the first 
quarter of 2017. 

We had an intellectual property dispute with Forward Pharma in the U.S. concerning intellectual property related 

to TECFIDERA. 

In March 2017 the U.S. intellectual property dispute was decided in our favor. Forward Pharma appealed to the 
U.S. Court of Appeals for the Federal Circuit. We evaluated the recoverability of the U.S. asset acquired from Forward 
Pharma and recorded a $328.2 million impairment charge in the first quarter of 2017 to adjust the carrying value of 
the acquired U.S. asset to fair value reflecting the impact of the developments in the U.S. legal dispute and 
continued to amortize the remaining net book value of the U.S. intangible asset in our consolidated statements of 
income utilizing an economic consumption model. The U.S. Court of Appeals for the Federal Circuit upheld the U.S. 
Patent and Trademark Office’s March 2017 ruling and in January 2019 denied Forward Pharma's petition for 
rehearing. We evaluated the recoverability of the U.S. asset based upon these most recent developments and 
recorded a $176.8 million impairment charge in the fourth quarter of 2018 to reduce the remaining net book value 
of the U.S. asset to zero.

We have an intellectual property dispute with Forward Pharma in the European Union (E.U.) concerning 

intellectual property related to TECFIDERA. 

In March 2018 the European Patent Office (EPO) revoked Forward Pharma’s European Patent No. 2 801 355. 

Forward Pharma has filed an appeal to the Technical Boards of Appeal of the EPO and a hearing has been set for 
June 2020. Based upon our assessment of this ruling, we continue to amortize the remaining net book value of the 
rest of world intangible asset in our consolidated statements of income utilizing an economic consumption model. 
The remaining net book value of the TECFIDERA rest of world intangible asset as of December 31, 2019, was $36.1 
million.

For additional information on the dispute with Forward Pharma in the E.U., please read Note 20, Litigation, to 

these consolidated financial statements.

IPR&D Related to Business Combinations

IPR&D represents the fair value assigned to research and development assets that we acquired as part of a 

business combination and had not yet reached technological feasibility at the date of acquisition. Upon 
commercialization, we will determine the estimated useful life and amortize these amounts based upon an economic 
consumption method. The carrying value associated with our IPR&D assets as of December 31, 2019 and 2018, 
relates to the various IPR&D programs we acquired in connection with our acquisitions of NST, Convergence 
Pharmaceuticals Holdings Limited (Convergence), Stromedix Inc. (Stromedix) and Biogen International Neuroscience 
GmbH (BIN) in 2019, 2015, 2012 and 2010, respectively. IPR&D balances include adjustments related to foreign 
currency exchange rate fluctuations.

F- 31

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

An analysis of anticipated lifetime revenues and anticipated development costs is performed annually during 

our long-range planning cycle, which was most recently updated in the second quarter of 2019. 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.  

In connection with our acquisition of NST in June 2019, we acquired IPR&D programs with an estimated fair 
value of $700.0 million. For additional information on our acquisition of NST, please read Note 2, Acquisitions, to 
these consolidated financial statements.

BG00011

During the third quarter of 2019 we discontinued the Phase 2b study of BG00011 for the potential treatment of 

idiopathic pulmonary fibrosis (IPF) due to safety concerns. As a result, we recognized an impairment charge of 
approximately $215.9 million during the third quarter of 2019 to reduce the fair value of the IPR&D intangible asset 
to zero. We also adjusted the value of our contingent consideration obligations related to this asset resulting in a 
gain of $61.2 million in the third quarter of 2019.

Vixotrigine

During the third quarter of 2018 we completed a Phase 2b study of vixotrigine for the potential treatment of 
painful lumbosacral radiculopathy (PLSR). The study did not meet its primary or secondary efficacy endpoints and we 
discontinued development of vixotrigine for the potential treatment of PLSR. As a result, we recognized an 
impairment charge of approximately $60.0 million during the third quarter of 2018 to reduce the fair value of the 
related IPR&D intangible asset to zero. 

In addition, we delayed the initiation of the Phase 3 studies of vixotrigine for the potential treatment of TGN as 

we awaited the outcome of ongoing interactions with the FDA regarding the design of the Phase 3 studies, a more 
detailed review of the data from the Phase 2b study of vixotrigine for the potential treatment of PLSR and insights 
from the Phase 2 study of vixotrigine for the potential treatment of small fiber neuropathy. We reassessed the fair 
value of the TGN program using reduced expected lifetime revenues, higher expected clinical development costs and 
lower cumulative probability of success. As a result of that reassessment, we recognized an impairment charge of 
$129.3 million during the third quarter of 2018 to reduce the fair value of the TGN IPR&D intangible asset to $41.8 
million. 

The IPR&D impairment charges were included in amortization and impairment of acquired intangible assets and 
the gain resulting from the remeasurement of our contingent consideration obligation was recorded in (gain) loss on 
fair value remeasurement of contingent consideration in our consolidated statements of income. The fair value of the 
intangible assets and contingent consideration obligations were based on a probability-adjusted discounted cash 
flow calculation using Level 3 fair value measurements and inputs including estimated revenues, costs and 
probabilities of success.

Estimated Future Amortization of Intangible Assets 

Our most recent long-range planning cycle was completed in the second quarter of 2019. Based upon this 

most recent analysis, the estimated future amortization of acquired intangible assets for the next five years is 
expected to be as follows:

(In millions)

2020

2021

2022

2023

2024

As of December 31, 2019

$

260.0

220.0

225.0

230.0

220.0

F- 32

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

Goodwill

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

(In millions)
Goodwill, beginning of year

Increase to goodwill
Elimination of goodwill allocated to Hillerød, Denmark manufacturing
operations
Other

Goodwill, end of year

As of December 31,

2019

2018

5,706.4 $
117.5

(69.5)
3.4
5,757.8 $

4,632.5
1,080.1

—
(6.2)
5,706.4

$

$

The increase to goodwill during 2019 was related to our acquisition of NST. For additional information on our 

acquisition of NST, please read Note 2, Acquisitions, to these consolidated financial statements.

The increase to goodwill during 2018 was related to $1.2 billion in contingent milestones achieved (exclusive 

of $119.9 million in tax benefits) and payable to the former shareholders of Fumapharm AG and holders of their 
rights. In the fourth quarter of 2018 we achieved the $20.0 billion cumulative sales level threshold and accrued the 
final contingent payment of $300.0 million related to FUMADERM and TECFIDERA (together, the Fumapharm 
Products), which was paid in the first quarter of 2019.

The elimination of goodwill represents an allocation based upon the relative fair value of our Hillerød, Denmark 

manufacturing operations at the divestiture date. In connection with the divestiture of our Hillerød, Denmark 
manufacturing operations, our remaining goodwill was reviewed for impairment, and based upon this review, no 
impairments were recognized. For additional information on the divestiture of our Hillerød, Denmark manufacturing 
operations, please read Note 3, Divestitures, to these consolidated financial statements.

As of December 31, 2019, we had no accumulated impairment losses related to goodwill. 

Other includes changes related to foreign currency exchange rate fluctuations. 

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, 2019 (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

Quoted
Prices in
Active
Markets
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

Total

$

2,541.1 $

— $

2,541.1 $

1,695.1
1,013.9
261.3
329.6
43.8
27.7
5,912.5 $

—

—
—
—
—
—
—
—

8.3 $

—

8.3 $

—
346.1
346.1

1,695.1
1,013.9
261.3
337.5
43.8
27.7
5,920.4 $

8.3 $

346.1
354.4 $

F- 33

$

$

$

—
—
—
7.9
—
—

7.9 $

— $
—
— $

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

As of December 31, 2018 (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

Quoted
Prices
in Active
Markets
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

Total

$

705.5 $

— $

705.5 $

2,459.2
969.6
260.5
615.4
66.9
25.4
5,102.5 $

24.6 $

409.8
434.4 $

$

$

$

—
—
—
51.7
—
—
51.7 $

— $
—
— $

2,459.2
969.6
260.5
563.7
66.9
25.4
5,050.8 $

24.6 $
—
24.6 $

—
409.8
409.8

—

—
—
—
—
—
—
—

There have been no changes in valuation techniques or transfers between fair value measurement levels during 
the years ended December 31, 2019 and 2018. The fair value of Level 2 instruments classified as cash equivalents, 
marketable debt securities and our marketable equity security investment in Ionis Pharmaceuticals, Inc. (Ionis) were 
determined through third-party pricing services or an option pricing valuation model. For additional information on our 
collaboration arrangements with Ionis, please read Note 18, Collaborative and Other Relationships, to these 
consolidated financial statements. For a description of our validation procedures related to prices provided by third-
party pricing services and our option pricing valuation model, please read 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)
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

Contingent Consideration Obligations

As of December 31,

2019

2018

$

$

1,509.6 $
1,038.9
1,897.2
2,107.9
6,553.6 $

1,489.5
1,000.4
1,745.1
1,802.6
6,037.6

In connection with our acquisitions of Convergence, Stromedix and BIN in 2015, 2012 and 2010, respectively, 

we agreed to make additional payments based upon the achievement of certain milestone events. The following 
table provides a roll forward of the fair values of our contingent consideration obligations, which includes Level 3 
measurements:

(In millions)
Fair value, beginning of year

Changes in fair value
Payments and other
Fair value, end of year

As of December 31,

2019

2018

$

$

409.8 $
(63.7)
—
346.1 $

523.6
(12.3)
(101.5)
409.8

As of December 31, 2019 and 2018, approximately $197.7 million and $265.0 million, respectively, of the fair 
value of our total contingent consideration obligations was reflected as a component of other long-term liabilities in 

F- 34

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

our consolidated balance sheets with the remaining balance reflected as a component of accrued expenses and 
other. 

For the year ended December 31, 2019, changes in the fair value of our contingent consideration obligations 

were primarily due to the discontinuation of the Phase 2b study of BG00011 for the potential treatment of IPF 
resulting in a reduction of our contingent consideration obligations of $61.2 million, partially offset by changes in the 
probability and expected timing of achievement of certain developmental milestones, a decrease in interest rates 
used to revalue our contingent consideration liabilities and the passage of time.

For the year ended December 31, 2018, changes in the fair value of our contingent consideration obligations 

were primarily due to delays in the expected timing of achievement of milestones related to the TGN program and an 
increase in discount rates used to revalue our contingent consideration liabilities, partially offset by the passage of 
time. For the year ended December 31, 2018, payments and other reflects an $81.5 million milestone payment 
made to the former shareholders of Stromedix. 

The fair values of the contingent consideration liabilities were based on a probability-adjusted discounted cash 
flow calculation using Level 3 fair value measurements and inputs including estimated revenues and probabilities of 
success. For additional information on the valuation techniques and inputs utilized in the valuation of our financial 
assets and liabilities, please read Note 1, Summary of Significant Accounting Policies, to these consolidated financial 
statements.

Convergence Pharmaceuticals Holdings Limited

In connection with our acquisition of Convergence in February 2015 we recorded a contingent consideration 
obligation of $274.5 million. As of December 31, 2019 and 2018, the fair value of this contingent consideration 
obligation was $244.6 million and $246.6 million, respectively. Our most recent valuation was determined based 
upon net cash flow projections of $400.0 million, probability weighted and discounted using a rate of 2.1%, which is 
a measure of the credit risk associated with settling the liability. 

For 2019 compared to 2018, the net decrease in our contingent consideration obligation was primarily due to 

changes in the expected timing and probabilities of success related to the achievement of certain developmental 
milestones, partially offset by a decrease in discount rates used to revalue our contingent consideration liabilities 
and the passage of time. Accrued expenses and other in our consolidated balances sheets include $148.5 million 
as we expect to make the payment within one year.

Stromedix Inc.

In connection with our acquisition of Stromedix in March 2012 we recorded a contingent consideration 
obligation of $122.2 million. During the third quarter of 2019 we discontinued the Phase 2b study of BG00011 for 
the potential treatment of IPF due to safety concerns. As a result, we adjusted the fair value of this contingent 
consideration obligation to zero, resulting in a gain of $61.2 million in the third quarter of 2019. As of December 31, 
2018, the fair value of this contingent consideration obligation was $83.0 million. 

Biogen Idec International Neuroscience GmbH

In connection with our acquisition of BIN in December 2010 we recorded a contingent consideration obligation 
of $81.2 million. As of December 31, 2019 and 2018, the fair value of this contingent consideration obligation was 
$101.5 million and $80.2 million, respectively. Our most recent valuation was determined based upon net cash 
outflow projections of $335.0 million, probability weighted and discounted using a rate of 2.3%, which is a measure 
of the credit risk associated with settling the liability. 

For 2019 compared to 2018, the net increase in our contingent consideration obligation was primarily due to 

changes in the expected timing and probabilities of success related to the achievement of certain developmental 
milestones, a decrease in discount rates used to revalue our contingent consideration liabilities and the passage of 
time. No amounts are reflected as a current liability in our consolidated balance sheets at December 31, 2019, as 
we do not expect to make a payment in the next year.

Acquired IPR&D

The fair values of the acquired IPR&D assets 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. These assets are tested for impairment annually until commercialization, after which time the acquired 

F- 35

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

IPR&D will be amortized over its estimated useful life using the economic consumption method. In connection with 
our acquisition of Stromedix, we recognized a $219.2 million acquired IPR&D intangible asset. During the third 
quarter of 2019 we discontinued the Phase 2b study of BG00011 for the potential treatment of IPF due to safety 
concerns and recognized an impairment charge of $215.9 million to reduce the fair value of the IPR&D intangible 
asset to zero. In connection with our acquisition of Convergence we recognized a $424.6 million acquired IPR&D 
intangible asset. During the third quarter of 2018 we recognized impairment charges related to certain IPR&D assets 
associated with our vixotrigine program totaling $189.3 million. For additional information on our IPR&D intangible 
assets, including a discussion of our most significant assumptions, please read Note 6, Intangible Assets and 
Goodwill, 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 in our consolidated balance sheets:

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

Total

As of December 31,

2019

2018

$

$

384.4 $
368.8
1,628.5
159.4
2,541.1 $

231.2
—
279.5
194.8
705.5

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. 

Marketable equity securities gains (losses) are recorded in other income (expense), net in our consolidated 

statements of income. The following tables summarize our marketable debt and equity securities, classified as 
available for sale:

As of December 31, 2019 (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

Amortized
Cost

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Fair
Value

$

$
$

1,057.2 $
633.9

502.9
510.1

0.7
260.2
2,965.0 $
218.4 $

1.0 $
3.0

0.4
0.8

—
0.8
6.0 $
132.1 $

— $
—

1,058.2
636.9

—
(0.3)

—
(0.4)
(0.7) $
(13.0) $

503.3
510.6

0.7
260.6
2,970.3
337.5

F- 36

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

As of December 31, 2018 (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

Amortized
Cost

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Fair
Value

$

$
$

1,608.4 $
854.9

706.1
264.0

0.1
260.5
3,694.0 $
496.2 $

— $
0.7

0.1
0.1

—
0.4
1.3 $
127.7 $

(0.9) $
(3.9)

1,607.5
851.7

(0.4)
(0.3)

—
(0.5)
(6.0) $
(8.5) $

705.8
263.8

0.1
260.4
3,689.3
615.4

Summary of Contractual Maturities: Available-for-Sale Debt 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 marketable debt securities

As of December 31, 2019

As of December 31, 2018

Estimated
Fair  Value

$

$

1,562.2 $
1,234.5
173.6
2,970.3 $

Amortized
Cost
1,560.8 $
1,230.4
173.8
2,965.0 $

Estimated
Fair  Value

2,313.4 $
1,232.7
143.2
3,689.3 $

Amortized
Cost
2,314.6
1,235.9
143.5
3,694.0

The average maturity of our marketable debt securities available-for-sale as of December 31, 2019 and 2018, 

were 14 months and 12 months, respectively.

Proceeds from Marketable Debt Securities

The proceeds from maturities and sales of marketable debt securities and resulting realized gains and losses 

are summarized as follows:

(In millions)
Proceeds from maturities and sales
Realized gains
Realized losses

For the Years Ended December 31,

2019

2018

2017

$
$
$

6,007.0 $
6.0 $
1.5 $

9,173.7 $
3.2 $
11.7 $

5,565.9
3.0
22.4

Realized losses for the year ended December 31, 2019, primarily relate to sales of corporate bonds, agency 
mortgage-backed securities and other asset-backed securities. Realized losses for the year ended December 31, 
2018, primarily relate to sales of corporate bonds, agency mortgage-backed securities and other asset-backed 
securities. Realized losses for the year ended December 31, 2017, primarily relate to impairments recognized on 
certain of our available-for-sale marketable debt securities, sales of agency mortgage-backed securities, corporate 
bonds and government securities.

Strategic Investments

As of December 31, 2019 and 2018, our strategic investment portfolio was comprised of investments totaling 

$393.9 million and $676.3 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, 

which are reflected within our disclosures included in Note 7, Fair Value Measurements, to these consolidated 
financial statements, venture capital funds where the underlying investments are in equity securities of certain 
biotechnology companies and non-marketable equity securities.

F- 37

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

  Our investments in equity securities include shares of Ionis common stock acquired in June 2018. This 

investment is classified as a Level 2 marketable security due to certain holding period restrictions and is 
remeasured each reporting period and carried at fair value. The effect of the holding period restrictions on our 
investment in Ionis common stock valuation are estimated using an option pricing valuation model. The most 
significant assumptions within the model are the term of the restrictions and the stock price volatility, which is based 
upon historical volatility of similar companies. We also use a constant maturity risk-free interest rate to match the 
remaining term of the restrictions on our investment in Ionis common stock and a dividend yield of zero based upon 
the fact that Ionis and similar companies generally have not historically granted cash dividends. The remainder of our 
investments in equity securities of certain publicly-traded biotechnology companies are regularly measured and 
carried at fair value and classified as Level 1.

The decrease in our strategic investment portfolio for the year ended December 31, 2019, primarily reflects our 
sale of a portion of our investment in Ionis common stock for approximately $382.0 million as well as our sale of our 
investment in a non-marketable equity security, partially offset by an increase in the fair value of our remaining 
investment in Ionis common stock.

For additional information on the June 2018 investment in Ionis common stock, please read Note 18, 

Collaborative and Other Relationships, to these consolidated financial statements.

Samsung Bioepis

In June 2018 we exercised our option under our joint venture agreement with Samsung BioLogics to increase 
our ownership percentage in Samsung Bioepis from approximately 5% to approximately 49.9%. The share purchase 
transaction was completed in November 2018 and, upon closing, we paid 759.5 billion South Korean won ($676.6 
million) to Samsung BioLogics. 

As of December 31, 2019 and 2018, the carrying value of our investment in Samsung Bioepis totaled 670.8 
billion South Korean won ($580.2 million) and 759.5 billion South Korean won ($680.6 million), respectively, which 
is classified as a component of investments and other assets within our consolidated balance sheets.

For additional information on our collaboration arrangements with Samsung Bioepis, please read Note 18, 

Collaborative and Other Relationships, to these consolidated financial statements.

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, 2019 and 2018, had durations of 1 to 15 

months and 1 to 12 months, respectively. These contracts have been designated as cash flow hedges and 
unrealized gains or losses on the portion of these foreign currency forward contracts that are included in the 
effectiveness test are reported in accumulated other comprehensive income (loss) (referred to as AOCI in the tables 
below). Realized gains and losses of such contracts are recognized in revenues when the sale of product in the 
currency being hedged is recognized and in operating expenses when the expense in the currency being hedged is 
recorded. We recognize all cash flow hedge reclassifications from accumulated other comprehensive income and fair 
value changes of excluded portions in the same line item in our consolidated statements of income that has been 
impacted by the hedged item.

F- 38

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

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

and operating expenses is summarized as follows:

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

Notional Amount
As of December 31,

2019

2018

$

1,892.4 $

—
—
—
—

1,701.4
215.3
131.4
98.8
92.2
2,239.1

Total foreign currency forward contracts

$

1,892.4 $

The pre-tax portion of the fair value of these foreign currency forward contracts that were included in 

accumulated other comprehensive income (loss) in total equity reflected net gains of $0.5 million as of 
December 31, 2019, net gains of $27.3 million as of December 31, 2018, and net losses of $113.0 million as of 
December 31, 2017. We expect the net gains of $0.5 million to be settled over the next 15 months, of which $2.4 
million of these gains are expected to be settled over the next 12 months, with any amounts in accumulated other 
comprehensive income (loss) to be reported as an adjustment to revenues or operating expenses. 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, 2019 and 2018, credit risk did not change the fair value 
of our foreign currency forward contracts.

The following tables summarize the effect of foreign currency forward contracts designated as hedging 

instruments in our consolidated statements of income:

For the Years Ended December 31,

Net Gains/(Losses)
Reclassified from AOCI into Operating Income (in millions)

Net Gains/(Losses)
Recognized in Operating Income (in millions)

Location
Revenues
Operating expenses

2019

2018

Location

$
$

118.6 $
(3.3) $

(42.5) Revenues

0.2 Operating expenses

2019

2018

$
$

2.9 $
0.2 $

10.8
(0.1)

For the Years Ended December 31,

Net Gains/(Losses)
Reclassified from AOCI into Operating Income (in millions)

Net Gains/(Losses)
Recognized Directly into Net Income (in millions)

Location
Revenues
Operating expenses

2017

Location

$
$

(32.5) Other income (expense)
0.6 Other income (expense)

2017

$
$

8.9
(0.2)

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. 

Interest Rate Swap Contracts

In connection with the issuance of our 2.90% Senior Notes, as described in Note 12, Indebtedness, to these 

consolidated financial statements, we entered into interest rate swaps with an aggregate notional amount of $675.0 
million, which expire on September 15, 2020. The interest rate swap contracts are designated as hedges of the fair 
value changes in our 2.90% Senior Notes attributable to changes in interest rates. The carrying value of our 2.90% 
Senior Notes as of December 31, 2019 and 2018, includes approximately $2.3 million and $14.5 million, 
respectively, related to changes in the fair value of these interest rate swap contracts. 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 our 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 recorded as 
a component of interest expense in our consolidated statements of income. 

F- 39

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

Net Investment Hedges - Hedging Instruments

In February 2012 we entered into a joint venture agreement with Samsung BioLogics, establishing an entity, 
Samsung Bioepis, to develop, manufacture and market biosimilar products. In June 2018 we exercised our option 
under our joint venture agreement to increase our ownership percentage in Samsung Bioepis from approximately 5% 
to approximately 49.9%. The share purchase transaction was completed in November 2018 and, upon closing, we 
paid 759.5 billion South Korean won ($676.6 million) to Samsung BioLogics. Our investment in the equity of 
Samsung Bioepis is exposed to the currency fluctuations in the South Korean won. 

In order to mitigate these currency fluctuations between the U.S. dollar and South Korean won, we have 

entered into foreign currency forward contracts. Foreign currency forward contracts in effect as of December 31, 
2019, had remaining durations of 10 months. These contracts have been designated as net investment hedges. We 
recognize changes in the spot exchange rate in accumulated other comprehensive income (loss). The pre-tax portion 
of the fair value of these foreign currency forward contracts that were included in accumulated other comprehensive 
income (loss) in total equity reflected net losses of $1.5 million and $3.8 million as of December 31, 2019 and 
2018, respectively. We exclude fair value changes related to the forward rate from our hedging relationship and will 
amortize the forward points in other income (expense), net in our consolidated statements of income over the term 
of the contract. The pre-tax portion of the fair value of the forward points that were included in accumulated other 
comprehensive income (loss) in total equity reflected gains of $2.9 million and $7.3 million as of December 31, 
2019 and 2018, respectively.

The following table summarizes the effect of our net investment hedges in our consolidated financial 

statements:

For the Years Ended December 31,

Net Gains/(Losses)
Recognized in Other Comprehensive Income 
(Effective Portion) (in millions)

Net Gains/(Losses)
Recognized in Other Comprehensive Income 
(Amounts Excluded from Effectiveness Testing) 
(in millions)

Net Gains/(Losses)
Recognized in Net Income 
(Amounts Excluded from Effectiveness 
Testing) (in millions)

Location
Gains (losses) on net
investment hedge

2019

2018

$25.3 $ (3.8)

Location
Gains (losses) on net
investment hedge

2019

2018

$ 3.3 $ —

Location
Other income
(expense)

2019

2018

$ 7.0 $ 1.5

For additional information on our collaboration arrangements with Samsung Bioepis, please read Note 18, 

Collaborative and Other Relationships, to these consolidated financial statements.

Foreign Currency Forward Contracts - Other Derivative Instruments

We also enter into other foreign currency forward contracts, usually with durations of one month or less, to 
mitigate the foreign currency risk related to certain balance sheet positions. We have not elected hedge accounting 
for these transactions.

The aggregate notional amount of these outstanding foreign currency contracts as of December 31, 2019 and 
2018, were $793.8 million and $735.1 million, respectively. Net losses of $5.9 million and net gains of $2.0 million 
and $4.5 million related to these contracts were recorded as a component of other income (expense), net, for the 
years ended December 31, 2019, 2018 and 2017, respectively.

Summary of Derivative Instruments

While certain of our derivative instruments are subject to netting arrangements with our counterparties, we do 
not offset derivative assets and liabilities in our consolidated balance sheets. The amounts in the table below would 
not be substantially different if the derivative assets and liabilities were offset. 

F- 40

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

The following table summarizes the fair value and presentation in our consolidated balance sheets of our 

outstanding derivative instruments, including those designated as hedging instruments:

(In millions)
Cash Flow Hedging Instruments:
Asset derivative instruments
Liability derivative instruments Accrued expenses and other

Other current assets

Balance Sheet Location

Net Investment Hedging
Instruments:

Asset derivative instruments
Fair Value Hedging Instruments

Other long-term liabilities

Other current assets

Liability derivative instruments Accrued expenses and other

Other long-term liabilities

Other Derivative Instruments:

Asset derivative instruments
Liability derivative instruments Accrued expenses and other

Other current assets

Fair Value
As of December 31, 2019

Fair Value
As of December 31, 2018

$
$
$

$

$
$

$
$

33.8 $
2.0 $
1.7 $

2.0 $

2.3 $
— $

8.0 $
2.4 $

65.8
6.9
—

—

—
14.5

1.1
3.2

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,

2019

2018

$

$

118.1 $
835.0
99.5
844.5
798.4
58.3
2,084.4
4,838.2
(1,590.9)
3,247.3 $

144.5
1,282.8
94.4
1,258.1
798.7
61.6
1,758.5
5,398.6
(1,797.4)
3,601.2

Depreciation expense totaled $190.6 million, $269.4 million and $266.3 million for 2019, 2018 and 2017, 

respectively.

For 2019, 2018 and 2017 we capitalized interest costs related to construction in progress totaling 

approximately $68.8 million, $54.0 million and $30.7 million, respectively. The increase in capitalized interest costs 
is primarily due to the construction of our large-scale biologics manufacturing facility in Solothurn, Switzerland, as 
discussed below.

Solothurn, Switzerland Manufacturing Facility

In order to support our drug development pipeline, we are building a large-scale biologics manufacturing facility 
in Solothurn, Switzerland. We expect this facility to be partially operational by the end of 2020. Upon completion, the 
facility will include 393,000 square feet related to a large-scale biologics manufacturing facility, 290,000 square feet 
of warehouse, utilities and support space and 51,000 square feet of administrative space. As of December 31, 
2019 and 2018, we had approximately $1.9 billion and $1.6 billion, respectively, capitalized as construction in 
progress related to this facility. 

F- 41

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

Divestiture of Hillerød, Denmark Manufacturing Operations

In August 2019 we completed the sale of all of the outstanding shares of our subsidiary that owned our 
biologics manufacturing operations in Hillerød, Denmark to FUJIFILM. This transaction included $631.5 million of 
property, plant and equipment, which was primarily comprised of $312.5 million for buildings and $287.3 million for 
machinery and equipment. For additional information on the divestiture of our Hillerød, Denmark manufacturing 
operations, please read Note 3, Divestitures, to these consolidated financial statements.

11.    Leases

We lease real estate, including laboratory and office space, and certain equipment. 

Our leases have remaining lease terms ranging from less than one year to ten years. Certain leases include 
one or more options to renew, exercised at our sole discretion, with renewal terms that can extend the lease term 
from one year to six years.

In addition, we sublease certain real estate to third parties. Our sublease portfolio consists of operating 
leases, with remaining lease terms ranging from less than one year to nine years. Our subleases do not include an 
option to renew as they are coterminous with our operating leases.

All of our leases qualify as operating leases. The following table summarizes the presentation in our 

consolidated balance sheets of our operating leases:

(In millions)
Assets:

Balance sheet location

As of December 31,
2019

Operating lease assets

Operating lease assets

Liabilities

Current operating lease liabilities

Accrued expenses and other

Non-current operating lease liabilities

Long-term operating lease liabilities

Total operating lease liabilities

$

$

$

427.0

73.6

412.7

486.3

The following table summarizes the effect of lease costs in our consolidated statements of income:

(In millions)
Operating lease cost

Variable lease cost

Sublease income

Net lease cost

Income Statement Location
Research and development

Selling, general and administrative

Research and development
Selling, general and administrative

Selling, general and administrative

Other (income) expense, net

For the year ended
December 31,

2019

$

$

6.7

84.6

1.2
23.7

(25.6)

(3.9)

86.7

F- 42

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

Variable lease cost primarily related to operating expenses, taxes and insurance associated with our operating 

leases. As these costs are generally variable in nature, they are not included in the measurement of the operating 
lease asset and related lease liability.

The minimum lease payments for the next five years and thereafter is expected to be as follows:

(In millions)

2020

2021

2022

2023

2024

Thereafter

Total lease payments

Less: interest

Present value of operating lease liabilities

As of December 31,
2019

$

$

$

87.6

81.5

75.7

72.5

69.0

158.3

544.6

58.3

486.3

Under the prior lease accounting guidance minimum rental commitments under non-cancelable leases, net of 

income from subleases, for each of the five years and total thereafter as of December 31, 2018, were as follows:

(In millions)
Minimum lease payments
Less: income from subleases(1)

Net minimum lease
payments

2019

2020

2021

2022

2023

Thereafter

Total

$

87.0 $
(26.8)

80.7 $
(25.6)

75.9 $
(23.7)

71.7 $
(24.0)

71.0 $ 215.3 $ 601.6
(182.8)
(58.4)
(24.3)

$

60.2 $

55.1 $

52.2 $

47.7 $

46.7 $ 156.9 $ 418.8

(1)  Represents sublease income expected to be received for the vacated manufacturing facility in Cambridge, MA, the vacated 

portion of our Weston, MA facility and other facilities throughout the world. 

The weighted average remaining lease term and weighted average discount rate of our operating leases are as 

follows:

Weighted average remaining lease term in years

Weighted average discount rate

As of December 31,
2019

7.07

3.2%

Supplemental disclosure of cash flow information related to our operating leases included in cash flows 

provided by operating activities in our consolidated statements of cash flows is as follows:

(In millions)
Cash paid for amounts included in the measurement of lease liabilities

Operating lease assets obtained in exchange for lease obligations

For the year ended
December 31,

2019

$

$

93.8

35.9

F- 43

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

12.  

Indebtedness

Our indebtedness is summarized as follows:

(In millions)
Current portion:

2.900% Senior Notes due September 15, 2020

Current portion of notes payable

Non-current portion:

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

Non-current portion of notes payable

2015 Senior Notes

As of December 31,

2019

2018

$

$

1,495.8 $

1,495.8 $

—
996.6
1,739.5
1,722.9

$

4,459.0 $

—

—

1,480.8
995.5
1,737.8
1,722.4

5,936.5

The following is a summary of our principal indebtedness as of December 31, 2019:

•  $1.5 billion aggregate principal amount of 2.90% Senior Notes due September 15, 2020, valued at 

99.792% of par;

•  $1.0 billion aggregate principal amount of 3.625% Senior Notes due September 15, 2022, valued at 

99.920% of par;

•  $1.75 billion aggregate principal amount of 4.05% Senior Notes due September 15, 2025, valued at 

99.764% of par; and

•  $1.75 billion aggregate principal amount of 5.20% Senior Notes due September 15, 2045, valued at 

99.294% of par.

The costs associated with these offerings of approximately $47.5 million have been recorded as a reduction to 

the carrying amount of the debt in our consolidated balance sheets. These costs along with the discounts will be 
amortized as additional interest expense using the effective interest rate method over the period from issuance 
through maturity. 

These notes are senior unsecured obligations. These Senior Notes may be redeemed at our option at any time 

at 100% of the principal amount plus accrued interest and a specified make-whole amount. These Senior Notes 
contain a change of control provision that may require us to purchase the notes at a price equal to 101% of the 
principal amount plus accrued and unpaid interest to the date of purchase under certain circumstances.

In connection with the 2.90% Senior Notes offering due in 2020, we entered into interest rate swap contracts. 

The carrying value of the 2.90% Senior Notes as of December 31, 2019 and 2018, includes approximately $2.3 
million and $14.5 million, respectively, related to changes in the fair value of these contracts. For additional 
information on our interest rate contracts, please read Note 9, Derivative Instruments, to these consolidated financial 
statements.

2015 Credit Facility

In August 2015 we entered into a $1.0 billion, five-year senior unsecured revolving credit facility under which we 

were permitted to draw funds for working capital and general corporate purposes. The terms of the revolving credit 
facility included a financial covenant that required us not to exceed a maximum consolidated leverage ratio. As of 
December 31, 2019, we had no outstanding borrowings and were in compliance with all covenants under this facility.

In January 2020 we entered into a new $1.0 billion, five-year senior unsecured revolving credit facility that 
replaced the credit facility entered into in August 2015. For additional information, please read Note 26, Subsequent 
Events, to these consolidated financial statements.

F- 44

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

Debt Maturity

The total gross payments due under our debt arrangements are as follows:

(In millions)
2020
2021
2022
2023
2024
2025 and thereafter

Total

As of December 31, 2019
1,500.0
$
—
1,000.0
—
—
3,500.0
6,000.0

$

The fair value of our debt is disclosed in Note 7, Fair Value Measurements, to these consolidated financial 

statements.

13.  

 Equity

Preferred Stock

We have 8.0 million shares of Preferred Stock authorized, of which 1.75 million shares are authorized as 

Series A, 1.0 million shares are authorized as Series X junior participating and 5.25 million shares are 
undesignated. Shares may be issued without a vote or action of shareholders from time to time in classes or series 
with the designations, powers, preferences and the relative, participating, optional or other special rights of the 
shares of each such class or series and any qualifications, limitations or restrictions thereon as set forth in the 
instruments governing such shares. Any such Preferred Stock may rank prior to common stock as to dividend rights, 
liquidation preference or both, and may have full or limited voting rights and may be convertible into shares of 
common stock. No shares of Preferred Stock were issued and outstanding during 2019, 2018 and 2017.

Common Stock

The following table describes the number of shares authorized, issued and outstanding of our common stock 

as of December 31, 2019, 2018 and 2017:

As of December 31, 2019

As of December 31, 2018

As of December 31, 2017

(In millions)
Common stock

Authorized
1,000.0

Issued
198.0

Outstanding
174.2

Authorized
1,000.0

Issued
221.0

Outstanding
197.2

Authorized
1,000.0

Issued
235.3

Outstanding
211.5

Share Repurchases

In December 2019 our Board of Directors authorized a program to repurchase up to $5.0 billion of our common 
stock (December 2019 Share Repurchase Program). Our December 2019 Share Repurchase Program does not have 
an expiration date. All share repurchases under our December 2019 Share Repurchase Program will be retired. We 
did not repurchase shares of our common stock under our December 2019 Share Repurchase Program during the 
year ended December 31, 2019.

In March 2019 our Board of Directors authorized a program to repurchase up to $5.0 billion of our common 

stock (March 2019 Share Repurchase Program). Our March 2019 Share Repurchase Program does not have an 
expiration date. All share repurchases under our March 2019 Share Repurchase Program will be retired. Under our 
March 2019 Share Repurchase Program, we repurchased and retired approximately 14.7 million shares of our 
common stock at a cost of approximately $3.7 billion during the year ended December 31, 2019.

In August 2018 our Board of Directors authorized a program to repurchase up to $3.5 billion of our common 
stock (2018 Share Repurchase Program), which was completed as of June 30, 2019. All share repurchases under 
our 2018 Share Repurchase Program were retired. Under our 2018 Share Repurchase Program, we repurchased and 
retired approximately 8.9 million and 4.3 million shares of our common stock at a cost of approximately $2.1 billion 
and $1.4 billion during the years ended December 31, 2019 and 2018, respectively.

In July 2016 our Board of Directors authorized a program to repurchase up to $5.0 billion of our common stock 

(2016 Share Repurchase Program), which was completed as of June 30, 2018. All share repurchases under our 

F- 45

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

2016 Share Repurchase Program were retired. Under our 2016 Share Repurchase Program, we repurchased and 
retired approximately 10.5 million and 3.7 million shares of common stock at a cost of approximately $3.0 billion 
and $1.0 billion during the years ended December 31, 2018 and 2017, respectively.

Amounts paid to repurchase shares in excess of their par value are allocated between additional paid-in capital 

and retained earnings, with payments in excess of our additional paid-in-capital balance recorded as a reduction to 
retained earnings.

Accumulated Other Comprehensive Income (Loss)

The following tables summarize the changes in accumulated other comprehensive income (loss), net of tax by 

component:

(In millions)

Unrealized
Gains (Losses)
on Securities
Available for
Sale, net of tax

Unrealized
Gains (Losses)
on Cash Flow
Hedges, net of
tax

Gains (Losses)
on Net
Investment
Hedge, Net of
Tax

Unfunded
Status of
Postretirement
Benefit Plans,
net of tax

Currency
Translation
Adjustments

Total

Balance, December 31, 2018 $

(4.0) $

34.7 $

3.5 $

(31.3) $

(243.3) $ (240.4)

Other comprehensive
income (loss) before
reclassifications
Amounts reclassified from
accumulated other
comprehensive income
(loss)

Net current period other
comprehensive income
(loss)

Balance, December 31, 2019 $

11.8

88.1

28.6

(1.5)

103.8

230.8

(3.6)

(115.0)

(7.0)

—

—

(125.6)

8.2

4.2 $

(26.9)

21.6

(1.5)

103.8

105.2

7.8 $

25.1 $

(32.8) $

(139.5) $ (135.2)

(In millions)

Unrealized
Gains (Losses)
on Securities
Available for
Sale, net of tax

Unrealized
Gains (Losses)
on Cash Flow
Hedges, net of
tax

Gains (Losses)
on Net
Investment
Hedge, Net of
Tax

Unfunded
Status of
Postretirement
Benefit Plans,
net of tax

Currency
Translation
Adjustments

Total

Balance, December 31, 2017 $
Amounts reclassified, net
of tax, upon adoption of
ASU 2016-01

Balance, January 1, 2018
Other comprehensive
income (loss) before
reclassifications
Amounts reclassified from
accumulated other
comprehensive income
(loss)

Net current period other
comprehensive income
(loss)

(1.6) $

(104.5) $

— $

(36.8) $

(175.5) $ (318.4)

1.5
(0.1)

—
(104.5)

(10.6)

97.4

—
—

5.0

—
(36.8)

—
(175.5)

1.5
(316.9)

5.5

(67.8)

29.5

6.7

41.8

(1.5)

—

—

47.0

(3.9)

139.2

3.5

5.5

(67.8)

76.5

Balance, December 31, 2018 $

(4.0) $

34.7 $

3.5 $

(31.3) $

(243.3) $ (240.4)

F- 46

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

(In millions)

Unrealized
Gains (Losses)
on Securities
Available for
Sale, net of tax

Unrealized
Gains (Losses)
on Cash Flow
Hedges, net of
tax

Gains (Losses)
on Net
Investment
Hedge, Net of
Tax

Unfunded
Status of
Postretirement
Benefit Plans,
net of tax

Currency
Translation
Adjustments

Total

Balance, December 31, 2016 $

(10.8) $

57.8 $

— $

(32.7) $

(334.2) $ (319.9)

Other comprehensive
income (loss) before
reclassifications
Amounts reclassified from
accumulated other
comprehensive income
(loss)

Net current period other
comprehensive income
(loss)

(3.5)

(193.8)

12.7

31.5

9.2

(162.3)

—

—

—

(4.1)

158.7

(42.7)

—

—

44.2

(4.1)

158.7

1.5

Balance, December 31, 2017 $

(1.6) $

(104.5) $

— $

(36.8) $

(175.5) $ (318.4)

The following table summarizes the amounts reclassified from accumulated other comprehensive income:

(In millions)
Gains (losses) on securities available for
sale

Gains (losses) on cash flow hedges

Income Statement Location

2019

2018

2017

Amounts Reclassified from
Accumulated Other Comprehensive Income

For the Years Ended December 31,

Other income (expense)
Income tax benefit (expense)

$

4.5 $
(0.9)

(8.5) $
1.8

Revenues
Operating expenses
Other income (expense)
Income tax benefit (expense)

118.6
(3.3)
0.3
(0.6)

7.0

(42.5)
0.2
0.3
0.2

1.5

(19.5)
6.8

(32.5)
0.6
0.3
0.1

—

Gains (losses) on net investment hedge

Other Income (expense)

Total reclassifications, net of tax

$

125.6 $

(47.0) $

(44.2)

14.  

 Earnings per Share

Basic and diluted earnings per share are calculated as follows:

(In millions)
Numerator:

For the Years Ended December 31,

2019

2018

2017

Net income attributable to Biogen Inc.

$

5,888.5 $

4,430.7 $

2,539.1

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
Performance stock units settled in stock

Dilutive potential common shares

Shares used in calculating diluted earnings per share

187.1

—
0.2
0.1
—
0.3
187.4

204.9

—
0.3
0.1
—
0.4
205.3

212.6

0.1
0.2
0.1
—
0.4
213.0

Amounts excluded from the calculation of net income per diluted share because their effects were anti-dilutive 

were insignificant.

F- 47

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

Earnings per share for the years ended December 31, 2019, 2018 and 2017, reflects, on a weighted average 

basis, the repurchase of approximately 23.6 million shares, 14.8 million shares and 3.7 million shares of our 
common stock, respectively, under our March 2019, 2018 and 2016 Share Repurchase Programs.

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

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,

2019

2018

2017

$

77.1 $

75.8 $

148.3
225.4
(8.9)

216.5
(35.7)

105.8
181.6
(11.5)

170.1
(27.5)

74.0
95.7
169.7
(9.6)

160.1
(42.8)

Share-based compensation expense included in net income
attributable to Biogen Inc.

$

180.8 $

142.6 $

117.3

The following table summarizes share-based compensation expense associated with each of our share-based 

compensation programs:

(In millions)
Market stock units
Time-vested restricted stock units
Cash settled performance units
Performance units
Performance stock units settled in stock
Performance stock units settled in cash
Employee stock purchase plan
NST stock options

Subtotal

Capitalized share-based compensation costs

Share-based compensation expense included in total cost
and expenses

For the Years Ended December 31,

2019

2018

2017

$

30.4 $

27.2 $

134.0
0.7
1.6
15.5
5.5
11.5
26.2
225.4
(8.9)

126.6
7.8
3.1
4.7
1.7
10.5
—
181.6
(11.5)

22.4
107.3
18.4
12.3
—
—
9.3
—
169.7
(9.6)

$

216.5 $

170.1 $

160.1

As of December 31, 2019, unrecognized compensation cost related to unvested share-based compensation 
was approximately $210.4 million, net of estimated forfeitures. We expect to recognize the cost of these unvested 
awards over a weighted-average period of 1.9 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. 2017 Omnibus 
Equity Plan (2017 Omnibus Equity Plan); and (iii) the Biogen Inc. 2015 Employee Stock Purchase Plan (2015 ESPP). 

Directors Plan

In May 2006 our shareholders approved the 2006 Directors Plan for share-based awards to our directors. 

Awards granted from the 2006 Directors Plan may include stock options, shares of restricted stock, RSUs, stock 
appreciation rights and other awards in such amounts and with such terms and conditions as may be determined by 
a committee of our Board of Directors, subject to the provisions of the 2006 Directors 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 

F- 48

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

provides that awards other than stock options and stock appreciation rights will be counted against the total number 
of shares reserved under the plan in a 1.5-to-1 ratio. In June 2015 our shareholders approved an amendment to 
extend the term of the 2006 Directors Plan until June 2025.

Omnibus Plan

In June 2017 our shareholders approved the 2017 Omnibus Equity Plan for share-based awards to our 
employees. Awards granted from the 2017 Omnibus Equity Plan may include stock options, shares of restricted 
stock, RSUs, performance shares, stock appreciation rights and other awards in such amounts and with such terms 
and conditions as may be determined by a committee of our Board of Directors, subject to the provisions of the 
2017 Omnibus Equity Plan. Shares of common stock available for grant under the 2017 Omnibus Equity Plan consist 
of 8.0 million shares reserved for this purpose, plus shares of common stock that remained available for grant under 
our 2008 Omnibus Equity Plan as of June 7, 2017, or that could again become available for grant if outstanding 
awards under the 2008 Omnibus Equity Plan as of June 7, 2017, are cancelled, surrendered or terminated in whole 
or in part. The 2017 Omnibus Equity Plan provides that awards other than stock options and stock appreciation 
rights will be counted against the total number of shares available under the plan in a 1.5-to-1 ratio.

We have not made any awards pursuant to the 2008 Omnibus Equity Plan since our shareholders approved the 
2017 Omnibus Equity Plan, and do not intend to make any awards pursuant to the 2008 Omnibus Equity Plan in the 
future, except that unused shares under the 2008 Omnibus Equity Plan have been carried over for use under the 
2017 Omnibus Equity Plan.

Stock Options

We currently do not grant stock options to our employees or directors. Outstanding stock options previously 
granted to our employees and directors generally have a 10-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. As of December 31, 2019, all outstanding options were exercisable.

The following table summarizes our stock option activity:

Outstanding at December 31, 2018

Granted
Exercised
Cancelled

Outstanding at December 31, 2019

Shares

27,000 $
— $
(15,000) $
— $
12,000 $

Weighted
Average
Exercise
Price

53.82
—
50.03
—
58.46

The total intrinsic values of options exercised in 2019, 2018 and 2017 totaled $4.2 million, $4.0 million and 
$3.4 million, respectively. The aggregate intrinsic values of options outstanding as of December 31, 2019, totaled 
$2.9 million. The weighted average remaining contractual term for options outstanding as of December 31, 2019, 
was 0.2 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

Market Stock Units (MSUs)

For the Years Ended December 31,

2019

2018

2017

$
$

2.5 $
0.4 $

2.2 $
0.8 $

3.4
0.7

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. 

F- 49

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

MSUs awarded to employees in 2014 and thereafter vest in three equal annual increments beginning on the 

first anniversary of the grant date, and participants may ultimately earn between 0% and 200% of the target number 
of units granted based on actual stock performance. 

The vesting of these awards is subject to the respective employee’s continued employment. The number of 

MSUs granted represents the target number of units that are eligible to be earned based on the attainment of 
certain market-based criteria involving our stock price. The number of MSUs earned is calculated at each annual 
anniversary from the date of grant over the respective vesting periods, resulting in multiple performance periods. 
Accordingly, additional MSUs may be issued or currently outstanding MSUs may be cancelled upon final 
determination of the number of awards earned. 

The following table summarizes our MSU activity:

Unvested at December 31, 2018

Granted (a)
Vested
Forfeited

Unvested at December 31, 2019

Shares

180,000 $
147,000 $
(101,000) $
(43,000) $
183,000 $

Weighted
Average
Grant Date
Fair Value

371.32
378.08
356.71
388.68
378.09

(a)  MSUs granted during 2019 include awards granted in conjunction with our annual awards made in February 2019 and MSUs 
granted in conjunction with the hiring of employees. These grants reflect the target number of shares eligible to be earned 
at the time of grant. MSUs granted in 2019 also reflect an adjustment based upon the final performance multiplier in 
relation to shares granted in 2018, 2017 and 2016.

We value grants of MSUs using a lattice model with a Monte Carlo simulation. This valuation methodology 
utilizes several key assumptions, the 30 calendar day average closing stock price on the date of grant for MSUs, 
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 $228.59 - $331.18 $279.47 - $346.76 $263.18 - $267.88
Weighted-average per share grant date fair value

$382.59

$378.08

$378.85

2018
—%
27.5% - 32.4%
1.9% - 2.3%

2017
—%
33.0% - 35.6%
0.9% - 1.6%

2019
—%
31.2% - 33.6%
2.46% - 2.53%

The fair values of MSUs vested in 2019, 2018 and 2017 totaled $32.5 million, $26.9 million and $31.4 

million, respectively.

Cash Settled Performance Units (CSPUs)

CSPUs awarded to employees vest in three equal annual increments beginning on the first anniversary of the 

grant date. The vesting of these awards is subject to the respective employee’s continued employment with such 
awards settled in cash. The number of CSPUs granted represents the target number of units that are eligible to be 
earned based on the attainment of certain performance measures established at the beginning of the performance 
period, which ends on December 31 of each year. Participants may ultimately earn between 0% and 200% of the 
target number of units granted based on the degree of actual performance metric achievement. Accordingly, 
additional CSPUs may be issued or currently outstanding CSPUs may be cancelled upon final determination of the 
number of units earned. CSPUs are classified as liability awards and 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.

F- 50

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

The following table summarizes our CSPU activity:

Unvested at December 31, 2018

Granted
Vested
Forfeited

Unvested at December 31, 2019

Shares

50,000
—
(33,000)
(4,000)
13,000

The cash paid in settlement of CSPUs vested in 2019, 2018 and 2017 totaled $10.6 million, $15.1 million 

and $16.6 million, respectively.  

Performance-vested Restricted Stock Units (PUs)

PUs are granted to certain employees in the form of RSUs that may be settled in cash or shares of our common 

stock at the sole discretion of the Compensation and Management Development Committee of our Board of 
Directors. These awards are structured and accounted for the same way as the CSPUs, and vest in three equal 
annual increments beginning on the first anniversary of the grant date. The number of PUs granted represents the 
target number of units that are eligible to be earned based on the attainment of certain performance measures 
established at the beginning of the performance period, which ends on December 31 of each year. Participants may 
ultimately earn between 0% and 200% of the target number of units granted based on the degree of actual 
performance metric achievement. Accordingly, additional PUs may be issued or currently outstanding PUs may be 
cancelled upon final determination of the number of units earned. PUs settling in cash are based on the 30 calendar 
day average closing stock price through each vesting date once the actual vested and earned number of units is 
known.

The following table summarizes our PU activity:

Unvested at December 31, 2018

Granted
Vested
Forfeited

Unvested at December 31, 2019

Shares

48,000
—
(33,000)
(4,000)
11,000

All PUs that vested in 2019, 2018 and 2017 were settled in cash totaling $10.4 million, $17.0 million and 

$11.5 million, respectively.

Performance Stock Units (PSUs)

PSUs Settled in Stock

During the first quarter of 2018 we began granting awards for performance-vested RSUs that will settle in 

stock. PSUs awarded to employees have a three-year performance period and vest on the third anniversary of the 
grant date. The vesting of these awards is subject to the respective employee’s continued employment. The number 
of PSUs granted represents the target number of units that are eligible to be earned based on the achievement of 
cumulative three-year performance measures established at the beginning of the performance period, which ends on 
December 31 of the third year of the performance period. 

Participants may ultimately earn between 0% and 200% of the target number of PSUs granted based on the 
degree of achievement of the applicable performance metric. Accordingly, additional PSUs may be issued or currently 
outstanding PSUs may be cancelled upon final determination of the number of units earned.

F- 51

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

The following table summarizes our PSUs that settle in stock activity:

Unvested at December 31, 2018

Granted (a)
Vested
Forfeited

Unvested at December 31, 2019

Weighted
Average
Grant Date
Fair Value

317.26
316.28
—
318.11
316.39

Shares

60,000 $
77,000 $
— $
(26,000) $
111,000 $

(a)  PSUs settled in stock granted in 2019 include awards granted in conjunction with our annual awards made in February 2019 
and PSUs 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. 

PSUs Settled in Cash

During the first quarter of 2018 we began granting awards for performance-vested restricted stock units that 

will settle in cash. PSUs awarded to employees have three performance periods and vest on the third anniversary of 
the grant date. The vesting of these awards is subject to the respective employee’s continued employment. The 
number of PSUs granted represents the target number of units that are eligible to be earned based on the 
achievement of three annual performance measures established when the performance objectives are defined, which 
will be at the beginning of each year and will end on December 31 of such year. 

Participants may ultimately earn between 0% and 200% of the target number of PSUs granted based on the 
degree of achievement of the applicable performance metric. Accordingly, additional PSUs may be issued or currently 
outstanding PSUs may be cancelled upon final determination of the number of units earned. PSUs are classified as 
liability awards and will be settled in cash based on the 30 calendar day average closing stock price through the 
vesting date, once the actual vested and earned number of PSUs is determined. Since no shares are issued, these 
awards do not dilute equity.

The following table summarizes our PSUs that settle in cash activity:

Unvested at December 31, 2018

Granted (a)
Vested
Forfeited

Unvested at December 31, 2019

Shares

40,000
63,000
(1,000)
(20,000)
82,000

(a)  PSUs settled in cash granted in 2019 include awards granted in conjunction with our annual awards made in February 2019 
and PSUs 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. 

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. 

F- 52

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

The following table summarizes our RSU activity:

Unvested at December 31, 2018

Granted (a)
Vested
Forfeited

Unvested at December 31, 2019

Shares

903,000 $
602,000 $
(416,000) $
(151,000) $
938,000 $

Weighted
Average
Grant Date
Fair Value

303.18
304.44
294.71
311.07
306.55

(a)  RSUs granted in 2019 primarily represent RSUs granted in conjunction with our annual awards made in February 2019 and 
awards made in conjunction with the hiring of new employees. RSUs granted in 2019 also include approximately 15,000 
RSUs granted to our Board of Directors.

RSUs granted in 2018 and 2017 had weighted average grant date fair values of $316.32 and $293.41, 

respectively.

The fair values of RSUs vested in 2019, 2018 and 2017 totaled $131.5 million, $111.7 million and $100.0 

million, respectively.  

Employee Stock Purchase Plan (ESPP)

In June 2015 our shareholders approved the 2015 ESPP. 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
Cash received under the 2015 ESPP

16.   

Income Taxes

Income Tax Expense

For the Years Ended December 31,

2019

2018

2017

204,000

170,000

$

40.4 $

40.5 $

167,000
39.8

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,

2019

2018

2017

4,725.3 $
2,400.6
7,125.9 $

3,877.0 $
2,022.6
5,899.6 $

3,540.4
1,588.4
5,128.8

947.4 $

59.1
84.4
1,090.9

1,143.9 $
(2.3)
(1,074.5)
67.1
1,158.0 $

1,131.8 $
45.5
140.0
1,317.3

(62.0) $
(7.4)
177.7
108.3
1,425.6 $

2,201.4
57.0
108.6
2,367.0

241.0
9.9
(159.2)
91.7
2,458.7

$

$

$

$

$

F- 53

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

2017 Tax Act

The Tax Cuts and Jobs Act of 2017 (2017 Tax Act) resulted in significant changes to the U.S. corporate income 
tax system. These changes include a federal statutory rate reduction from 35% to 21%, the elimination or reduction 
of certain domestic deductions and credits and limitations on the deductibility of interest expense and executive 
compensation. The 2017 Tax Act also transitions international taxation from a worldwide system to a modified 
territorial system, which has the effect of subjecting certain earnings of our foreign subsidiaries and collaborations to 
immediate U.S. taxation as GILTI or Subpart F income, and includes base erosion prevention measures on U.S. 
earnings and the reduced effective tax rate on income that comes from U.S. exports, called Foreign Derived 
Intangible Income. These changes became effective in 2018. 

During the fourth quarter of 2017 we recognized within our provision for income taxes a $1.2 billion estimate 

pursuant to the U.S. Securities and Exchange Commission Staff Accounting Bulletin No. 118. Our estimate included 
an amount of $989.6 million associated with a one-time mandatory deemed repatriation tax on accumulated foreign 
subsidiaries' previously untaxed foreign earnings (the Transition Toll Tax), as discussed below, and $184.0 million 
related to the impact of remeasuring our deferred tax balances to reflect the new federal statutory rate and other 
changes to U.S. tax law. 

During the year ended December 31, 2018, we recognized a net reduction of $34.6 million in our estimated 

Transition Toll Tax, an expense of $12.7 million to remeasure our deferred tax balances, an expense of $135.8 
million related to establishing deferred taxes for GILTI and an expense of $11.0 million to reflect other aspects of 
the 2017 Tax Act.

Transition Toll Tax

The 2017 Tax Act eliminated the deferral of U.S. income tax on the historical unrepatriated earnings by 

imposing the Transition Toll Tax. The Transition Toll Tax was assessed on our share of our foreign corporations' 
accumulated foreign earnings that were not previously taxed. Earnings in the form of cash and cash equivalents were 
taxed at a rate of 15.5% and all other earnings were taxed at a rate of 8.0%.

As of December 31, 2019 and 2018, we have accrued income tax liabilities of $697.0 million under the 
Transition Toll Tax. Of the amounts accrued as of December 31, 2019, no amounts are expected to be paid within 
one year due to an approximately $87.0 million carryforward of taxes paid in relation to the company's 2017 tax 
return. The Transition Toll Tax will be paid over an eight--year period, which started in 2018, and does not accrue 
interest.

Unremitted Earnings

At December 31, 2019, we considered our earnings not to be permanently reinvested outside the U.S. and 

therefore recorded deferred tax liabilities associated with an estimate of the total withholding taxes expected as a 
result of our repatriation of earnings. Other than for earnings, we are permanently reinvested for book/tax basis 
differences of approximately $1.5 billion as of December 31, 2019, primarily arising through the impacts of purchase 
accounting. These permanently reinvested basis differences could reverse through sales of the foreign subsidiaries, 
as well as various other events, none of which were considered probable as of December 31, 2019. The residual 
U.S. tax liability, if these differences reverse, would be between $0.3 billion and $0.4 billion as of December 31, 
2019.

Article 20 Procedure of ZINBRYTA

In 2017 the European Medicines Agency initiated a review (referred to as an Article 20 Procedure) of ZINBRYTA 
following the report of a case of fatal fulminant liver failure, as well as four cases of serious liver injury. As a result of 
the Article 20 Procedure of ZINBRYTA, for the year ended December 31, 2017, we recognized a net impairment 
charge on certain tax assets related to ZINBRYTA reflected within income tax expense of $48.8 million. This charge 
reflected the write-off of $142.6 million related to prepaid taxes, which was partially offset by the recognition of an 
unrecorded deferred tax benefit of $93.8 million. For additional information on our collaboration arrangement with 
AbbVie, please read Note 18, Collaborative and Other Relationships, to these consolidated financial statements.

F- 54

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

Deferred Tax Assets and Liabilities

Significant components of our deferred tax assets and liabilities are summarized as follows:

(In millions)
Deferred tax assets:

Tax credits
Inventory, other reserves and accruals
Intangibles, net
Net operating loss
Share-based compensation
Other
Valuation allowance

Total deferred tax assets

Deferred tax liabilities:

Purchased intangible assets
GILTI
Tax credits
Depreciation, amortization and other

Total deferred tax liabilities

As of December 31,

2019

2018

$

$

$

$

106.6 $
162.0
3,380.0
130.4
23.8
103.7
(1.1)
3,905.4 $

(350.3) $

(1,381.6)
(1,617.2)
(135.0)
(3,484.1) $

102.8
163.9
2,298.6
213.1
25.8
38.9
(20.0)
2,823.1

(232.8)
(544.6)
(1,425.7)
(102.3)
(2,305.4)

In addition to deferred tax assets and liabilities, we have recorded prepaid tax and deferred charges related to 

intra-entity sales of inventory. As of December 31, 2019 and 2018, the total deferred charges and prepaid taxes 
were $243.8 million and $239.2 million, respectively. 

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
Divestiture of Denmark manufacturing operations
Internal reorganization of certain intellectual property rights
GILTI
Other permanent items
U.S. tax reform
Swiss tax reform
Manufacturing deduction
Impairment of ZINBRYTA related tax assets
Other

Effective tax rate

Changes in Tax Rate

For the Years Ended December 31,

2019

2018

2017

21.0%
0.8
(4.5)
(1.1)
0.4
1.0
(2.1)
1.5
0.2
—
(0.8)
—
—
(0.1)
16.3%

21.0%
0.6
(1.9)
(0.9)
1.2
—
—
1.6
0.3
2.1
—
—
—
0.2
24.2%

35.0%
0.8
(11.1)
(0.8)
1.4
—
—
—
0.7
22.9
—
(1.9)
0.9
—
47.9%

For the year ended December 31, 2019, as compared to 2018, the decrease in our effective tax rate was 
primarily due to the combination of the internal reorganization of certain intellectual property rights and the impact of 
the enactment of a new taxing regime in the country and certain cantons of Switzerland. This decrease was partially 
offset by a $68.9 million tax expense related to the divestiture of our subsidiary that owned our Hillerød, Denmark 
manufacturing operations. We also had a higher effective tax rate in 2018 resulting from the unfavorable effects of 

F- 55

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

the 2017 Tax Act and our sale of inventory, the tax effect of which had been included within prepaid taxes at January 
1, 2018, at a higher effective tax rate than the 2018 statutory tax rate.

Although we are recognizing a loss on the divestiture of our Hillerød, Denmark manufacturing operations, the 
divestiture required us to write-off certain deferred tax assets and resulted in a taxable gain in certain jurisdictions.

As a result of the internal reorganization of certain intellectual property rights, we recorded a deferred tax asset 

of $754.1 million and a deferred tax liability of $603.3 million as of December 31, 2019.

For the year ended December 31, 2018, as compared to 2017, the decrease in our effective tax rate was 
primarily due to the enactment of the 2017 Tax Act. The effects of an overall reduction in the federal statutory rate in 
the U.S. were partially offset by the elimination of the manufacturing deduction, the imposition of the GILTI tax on 
international earnings, our recording of deferred taxes on GILTI in 2018, limits on the deductibility of certain benefits 
on executive compensation and a reduction in the tax benefit associated with the Orphan Drug Credit, all resulting 
from the 2017 Tax Act, and a change in accounting rules related to recording the tax impacts of intra-entity 
transactions. 

Tax Attributes

As of December 31, 2019, we had net operating losses and general business credit carry forwards for federal 

income tax purposes of approximately $0.7 million and $1.3 million, respectively, which begin to expire in 2022. 
Additionally, for state income tax purposes, we had net operating loss carry forwards of approximately $4.6 million 
that begin to expire in 2020. For state income tax purposes, we had research and investment credit carry forwards of 
approximately $133.8 million that begin to expire in 2020. For foreign income tax purposes, we had $1,773.8 million 
of net operating loss carryforwards that begin to expire in 2025.

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. Based upon the level of historical taxable income and income tax liability and projections for future 
taxable income over the periods in which the deferred tax assets are utilizable, we believe it is more likely than not 
that we will realize the net benefits of the deferred tax assets of our wholly owned subsidiaries. In the event that 
actual results differ from our estimates or we adjust our estimates in future periods, we may need to establish a 
valuation allowance, which could materially impact our consolidated financial position and results of operations.

Accounting for Uncertainty in Income Taxes

A reconciliation of the beginning and ending amount of our unrecognized tax benefits is summarized as follows:

(In millions)
Balance at January 1,

Additions based on tax positions related to the current period
Additions for tax positions of prior periods
Reductions for tax positions of prior periods
Statute expirations
Settlement refund (payment)

Balance at December 31,

For the Years Ended December 31,

2019

2018

2017

$

$

114.2 $
5.3
17.2
(10.3)
(0.1)
3.6
129.9 $

66.8 $
0.5
58.7
(13.6)
(2.9)
4.7
114.2 $

32.4
5.7
7.3
(21.8)
(1.4)
44.6
66.8

Our 2017 activity reflects a refund received from a state related to the settlement of an uncertain tax position.

We and our subsidiaries are routinely examined by various taxing authorities. We file income tax returns in 
various U.S. states and in U.S. federal and other foreign jurisdictions. With few exceptions, we are no longer subject 
to U.S. federal tax examination for years before 2013 or state, local or non-U.S. income tax examinations for years 
before 2012.

The U.S. Internal Revenue Service and other national tax authorities routinely examine our intercompany 
transfer pricing with respect to intellectual property related transactions and it is possible that they may disagree 
with one or more positions we have taken with respect to such valuations.

F- 56

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

Included in the balance of unrecognized tax benefits as of December 31, 2019, 2018 and 2017, are $122.7 
million, $109.1 million and $64.3 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 related to unrecognized tax benefits in income tax expense. In 

2019, 2018 and 2017 we recognized a net interest expense of $4.7 million, $2.2 million and $4.8 million, 
respectively. We have accrued $20.0 million and $13.8 million for the payment of interest and penalties as of 
December 31, 2019 and 2018, respectively.

Accounting for Uncertainty in Income Taxes

On February 1, 2017, in connection with the spin-off of our hemophilia business, we distributed all of the then 

outstanding shares of Bioverativ common stock to Biogen shareholders pursuant to a separation agreement. In 
March 2018 Bioverativ was acquired by Sanofi S.A. (Sanofi) and is now an indirect wholly-owned subsidiary of Sanofi. 
The spin-off of our hemophilia business was intended to qualify for tax-free treatment to Biogen and its shareholders 
under the Internal Revenue Code. Our 2017 tax return remains open to audit. Bioverativ and Sanofi agreed to 
indemnify us for certain potential liabilities that may arise. 

Federal and State Uncertain Tax Positions

It is reasonably possible that we will adjust the value of our uncertain tax positions related to certain transfer 
pricing, collaboration matters and other issues as we receive additional information from various taxing authorities, 
including reaching settlements with such authorities.

We estimate that it is reasonably possible that our gross unrecognized tax benefits, exclusive of interest, could 

decrease by up to approximately $75.0 million in the next 12 months as a result of various audit closures, 
settlements and expiration of the statute of limitations.

17.  

 Other Consolidated Financial Statement Detail

Supplemental Cash Flow Information

Supplemental disclosure of cash flow information for the years ended December 31, 2019, 2018 and 2017, is 

as follows:

(In millions)
Cash paid during the year for:

Interest
Income taxes

For the Years Ended December 31,

2019

2018

2017

$
$

244.2 $
1,064.5 $

243.2 $
1,007.1 $

281.7
1,066.4

Non-cash Operating, Investing and Financing Activity

In the fourth quarter of 2018 we accrued $300.0 million upon reaching $20.0 billion in total cumulative sales 

of the Fumapharm Products, which was paid in the first quarter of 2019. In the fourth quarter of 2017 we accrued 
$600.0 million upon reaching $15.0 billion and $16.0 billion in total cumulative sales of the Fumapharm Products, 
which was paid in the first quarter of 2018. These amounts, net of tax benefit, were accounted for as increases to 
goodwill in accordance with the accounting standard applicable to business combinations when we acquired 
Fumapharm AG. 

In connection with the construction of our large-scale biologics manufacturing facility in Solothurn, Switzerland, 

we accrued charges related to processing equipment and engineering services of approximately $50.0 million and 
$100.0 million in our consolidated balance sheets as of December 31, 2019 and 2018, respectively. For additional 
information on the construction of our manufacturing facility in Solothurn, Switzerland, please read Note 10, Property, 
Plant and Equipment, to these consolidated financial statements. 

F- 57

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

Other Income (Expense), Net

Components of other income (expense), net, are summarized as follows:

(In millions)
Interest income
Interest expense
Gain (loss) on investments, net
Foreign exchange gains (losses), net
Other, net

Total other income (expense), net

For the Years Ended December 31,

2019

2018

2017

120.0 $
(187.4)
204.7
(7.0)
(47.0)
83.3 $

112.5 $
(200.6)
119.5
(9.9)
(10.5)
11.0 $

78.5
(250.8)
(36.3)
6.3
(14.7)
(217.0)

$

$

Gain (loss) on investments, net, as reflected in the table above, relate to debt securities, equity securities of 
certain biotechnology companies, venture capital funds where the underlying investments are in equity securities of 
certain biotechnology companies and non-marketable equity securities.

The following table summarizes our gain (loss) on investments, net that relates to our equity securities held as of 

December 31, 2019, 2018 and 2017:

(In millions)

Net gains (losses) recognized during the period on equity
securities
Less: Net gains (losses) recognized during the period on
equity securities sold during the period
Unrealized gains (losses) recognized during the period on
equity securities held as of December 31

$

$

$

Accrued Expenses and Other

Accrued expenses and other consists of the following:

(In millions)
Revenue-related reserves for discounts and allowances
Employee compensation and benefits
Collaboration expenses
Royalties and licensing fees
Current portion of contingent consideration obligations
Construction in progress
Other

Total accrued expenses and other

Other Long-term Liabilities

For the Years Ended December 31,

2019

2018

2017

200.1 $

127.9 $

(19.8)

50.0 $

(0.6) $

—

150.1 $

128.5 $

(19.8)

As of December 31,

2019

2018

1,001.1 $
309.1
281.6
220.9
148.4
78.0
726.7
2,765.8 $

874.7
320.9
261.6
224.7
444.8
125.2
609.3
2,861.2

$

$

Other long-term liabilities were $1,348.9 million and $1,389.4 million as of December 31, 2019 and 2018, 

respectively, and include accrued income taxes totaling $803.3 million and $791.4 million, respectively.

18.  

 Collaborative and Other Relationships

In connection with our business strategy, we have entered into various collaboration agreements that provide 

us with rights to develop, produce and market products using certain know-how, technology and patent rights 
maintained by our collaborative partners. Terms of the various collaboration agreements may require us to make 
milestone payments upon the achievement of certain product research and development objectives and pay royalties 
on future sales, if any, of commercial products resulting from the collaboration.

F- 58

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

Depending on the collaborative arrangement, we may record funding receivable or payable balances with our 

collaboration partners, based on the nature of the cost-sharing mechanism and activity within the collaboration. Our 
significant collaborative arrangements are discussed below.

Genentech, Inc. (Roche Group)

We have certain business and financial rights with respect to RITUXAN for the treatment of non-Hodgkin's 
lymphoma, CLL and other conditions; RITUXAN HYCELA for the treatment of non-Hodgkin's lymphoma and CLL; 
GAZYVA for the treatment of CLL and follicular lymphoma; OCREVUS for the treatment of PPMS and RMS; and other 
potential anti-CD20 therapies pursuant to our collaboration arrangements with Genentech, a wholly-owned member 
of the Roche Group. For purposes of this footnote we refer to RITUXAN and RITUXAN HYCELA collectively as 
RITUXAN.

Our collaboration arrangements will continue in effect until we mutually agree to terminate the collaboration, 

except that if we undergo a change in control, as defined in our collaboration agreement, Genentech has the right to 
present an offer to buy the rights to RITUXAN and we must either accept Genentech’s offer or purchase Genentech’s 
rights on the same terms as its offer. Genentech will also be deemed concurrently to have purchased our rights to 
any other anti-CD20 products in development in exchange for a royalty and our rights to GAZYVA in exchange for the 
compensation described in the table below. Our collaboration with Genentech was created through a contractual 
arrangement and not through a joint venture or other legal entity.

RITUXAN

Genentech and its affiliates are responsible for the worldwide manufacture of RITUXAN, as well as all 

development and commercialization activities as follows:

U.S.

We have co-exclusively licensed our rights to develop, commercialize and market RITUXAN in the U.S.

Canada

We have co-exclusively licensed our rights to develop, commercialize and market RITUXAN in Canada.

GAZYVA

The Roche Group and its sub-licensees maintain sole responsibility for the development, manufacture and 

commercialization of GAZYVA in the U.S. We recognize our share of the development and commercialization 
expenses of GAZYVA as a reduction of our share of pre-tax profits in revenues from anti-CD20 therapeutic programs. 

Commercialization of GAZYVA impacts our percentage of the co-promotion profits for RITUXAN, as summarized 

in the table below.

OCREVUS

In March 2017 the FDA approved OCREVUS for the treatment of RMS and PPMS. Pursuant to the terms of our 
collaboration arrangements with Genentech, we receive a tiered royalty on U.S. net sales from 13.5% and increasing 
up to 24% if annual net sales exceed $900.0 million. There will be a 50% reduction to these royalties if a biosimilar 
to OCREVUS is approved in the U.S. 

In addition, we receive a gross 3% royalty on net sales of OCREVUS outside the U.S., with the royalty period 

lasting 11 years from the first commercial sale of OCREVUS on a country-by-country basis. OCREVUS has been 
approved for the treatment of RMS and PPMS in the E.U. and certain other countries. 

The commercialization of OCREVUS does not impact the percentage of the co-promotion profits we receive for 

RITUXAN or GAZYVA. Genentech is solely responsible for development and commercialization of OCREVUS and 
funding future costs. Genentech cannot develop OCREVUS in CLL, non-Hodgkin's lymphoma or rheumatoid arthritis. 
OCREVUS royalty revenues were based on our estimates from third party and market research data of OCREVUS 
sales occurring during the corresponding period. Differences between actual and estimated royalty revenues will be 
adjusted for in the period in which they become known, which is expected to be the following quarter.

F- 59

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

Profit-sharing Formulas

RITUXAN Profit Share

Our current pretax co-promotion profit-sharing formula for RITUXAN provides for a 30% share on the first $50.0 

million of co-promotion operating profits earned each calendar year. Our share of annual co-promotion profits in 
excess of $50.0 million varies, as summarized in the table below, upon the following events:

Until GAZYVA First Non-CLL FDA Approval

After GAZYVA First Non-CLL FDA Approval until First GAZYVA Threshold Date

After First GAZYVA Threshold Date until Second GAZYVA Threshold Date

After Second GAZYVA Threshold Date

40.0%

39.0%

37.5%

35.0%

First Non-CLL GAZYVA FDA Approval means the FDA’s first approval of GAZYVA in an indication other than CLL.

First GAZYVA Threshold Date means the earlier of (i) the date of the First Non-CLL GAZYVA FDA approval if U.S. 
gross sales of GAZYVA for the preceding consecutive 12-month period were at least $150.0 million or (ii) the 
first day of the calendar quarter after the date of the First Non-CLL GAZYVA FDA Approval that U.S. gross sales 
of GAZYVA within any consecutive 12-month period have reached $150.0 million.

Second GAZYVA Threshold Date means the first day of the calendar quarter after U.S. gross sales of GAZYVA 
within any consecutive 12-month period have reached $500.0 million. The Second GAZYVA Threshold Date can 
be achieved regardless of whether GAZYVA has been approved in a non-CLL indication.

Our share of RITUXAN pre-tax profits in the U.S. decreased from 39% to 37.5% in the third quarter of 2017 as 

gross sales of GAZYVA in the U.S. for the preceding 12-month period exceeded $150.0 million.

In addition, should the FDA approve an anti-CD20 product other than OCREVUS or GAZYVA that is acquired or 

developed by Genentech and subject to the collaboration agreement, our share of the co-promotion operating profits 
would be between 30% and 37.5% based on certain events.

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%

Our share of GAZYVA operating profits in 2019 and 2018 was 37.5%. In 2017 our share of operating profits on 

GAZYVA was 35%.

In November 2017 the FDA approved GAZYVA in combination with chemotherapy, followed by GAZYVA alone, for 

people with previously untreated advanced follicular lymphoma.

Revenues from Anti-CD20 Therapeutic Programs

Revenues from anti-CD20 therapeutic programs are summarized as follows:

(In millions)
Biogen's share of pre-tax profits in the U.S. for RITUXAN and
GAZYVA, including the reimbursement of selling and
development expenses
Other revenues from anti-CD20 therapeutic programs

Total revenues from anti-CD20 therapeutic programs

For the Years Ended December 31,

2019

2018

2017

$

$

1,542.4 $

1,431.9 $

748.0

548.3

2,290.4 $

1,980.2 $

1,316.4

242.8

1,559.2

F- 60

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

Prior to regulatory approval, we record our share of the expenses incurred by the collaboration for the 

development of anti-CD20 products in research and development expense in our consolidated statements of 
income. After an anti-CD20 product is approved, we record our share of the development expenses related to that 
product as a reduction of our share of pre-tax profits in revenues from anti-CD20 therapeutic programs. 

Ionis Pharmaceuticals, Inc. 

SPINRAZA

In January 2012 we entered into a collaboration and license agreement with Ionis pursuant to which we have 
an exclusive, worldwide license to develop and commercialize SPINRAZA for the treatment of SMA. SPINRAZA was 
approved for the treatment of SMA in the U.S., E.U. and Japan in December 2016, June 2017 and July 2017, 
respectively.

For the years ended December 31, 2019, 2018 and 2017, we recognized product revenues of $2,097.0 

million, $1,724.2 million and $883.7 million, respectively, on our sales of SPINRAZA. Under our agreement with 
Ionis, we make royalty payments to Ionis on annual worldwide net sales of SPINRAZA using a tiered royalty rate 
between 11% and 15%, which are recognized in cost of sales within our consolidated statements of income. Royalty 
cost of sales related to sales of SPINRAZA for the years ended December 31, 2019, 2018 and 2017, totaled 
$293.0 million, $238.0 million and $112.4 million, respectively.

During 2017 we made milestone payments to Ionis totaling $150.0 million related to the marketing approvals 

discussed above, which were capitalized in intangible assets, net in our consolidated balance sheets.  

Antisense Therapeutics

In December 2012 we entered into an agreement with Ionis for the development and commercialization of up 

to three gene targets. 

Under this agreement, Ionis is responsible for global development of any product candidate through the 
completion of a Phase 2 trial and we will provide advice on the clinical trial design and regulatory strategy. We have 
an option to license the product candidate until completion of the Phase 2 trial. If we exercise our option, we will pay 
a license fee of up to $70.0 million to Ionis and assume global development, regulatory and commercialization 
responsibilities. Ionis is eligible to receive up to $130.0 million in additional milestone payments upon the 
achievement of certain regulatory milestones as well as royalties on future sales if we successfully develop the 
product candidate after option exercise. 

Upon entering into this agreement, we made an upfront payment of $30.0 million to Ionis and agreed to make 

potential additional payments, prior to licensing, of up to $10.0 million based on the development of the selected 
product candidate as well as a mark-up of the cost estimate of the Phase 1 and Phase 2 trials. During 2015 we 
recognized this $10.0 million developmental milestone upon the selection of BIIB080 (tau ASO), which is currently in 
Phase 1 development for the potential treatment of AD. 

In December 2019 we exercised our option with Ionis and obtained a worldwide, exclusive, royalty-bearing 
license to develop and commercialize BIIB080. In connection with the option exercise, we made a payment of $45.0 
million to Ionis, which was recorded as research and development expense in our consolidated statements of 
income. Future payments may include additional milestone payments of up to $155.0 million and royalties on future 
sales of in the low- to mid-teens if we successfully develop the product candidate after option exercise.

2018 Ionis Agreement

In June 2018 we closed a 10-year exclusive collaboration agreement with Ionis to develop novel antisense 
oligonucleotide (ASO) drug candidates for a broad range of neurological diseases (2018 Ionis Agreement) for a total 
payment of $1.0 billion, consisting of an upfront payment of $375.0 million and the purchase of approximately 11.5 
million shares of Ionis common stock at a cost of $625.0 million.

Upon closing, we recorded $50.9 million of the $375.0 million upfront payment as prepaid services in our 
consolidated balance sheets and recognized the remaining $324.1 million as research and development expense in 
our consolidated statements of income. The amount recorded as prepaid services represented the value of the 
employee resources committed to the arrangement to provide research and discovery services over the term of the 
agreement.

F- 61

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

The 11.5 million shares of Ionis common stock were purchased at a premium to their fair value at the 

transaction closing date. The premium consisted of acquiring the shares at a price above the fair value based on the 
trailing 10-day weighted-average close price prior to entering into the 2018 Ionis Agreement in April 2018 and the 
effect of certain holding period restrictions. We recorded an asset of $462.9 million in investments and other assets 
in our consolidated balance sheets reflecting the fair value of the common stock as of the purchase date and a 
charge of $162.1 million to research and development expense in our consolidated statements of income in the 
second quarter of 2018 reflecting the premium paid for the common stock. 

Our investment in Ionis common stock is remeasured each reporting period. Changes in the fair value of our 

investment in Ionis common stock, including the effect of the holding period restrictions, are reflected in other 
income (expense), net in our consolidated statements of income. For additional information on the fair value of our 
investment in Ionis common stock, please read Note 7, Fair Value Measurements, to these consolidated financial 
statements.

We have the option to license therapies arising out of this agreement and will be responsible for the 

development and commercialization of such therapies. We may pay development milestones to Ionis of up to $125.0 
million or $270.0 million for each program, depending on the indication plus an annual license fee, as well as 
royalties on potential net commercial sales.

During the year ended December 31, 2019, we incurred milestones of $30.0 million related to the 

advancement of neurological targets identified under this agreement.

2017 SMA Collaboration Agreement

In December 2017 we entered into a collaboration agreement with Ionis to identify new ASO drug candidates 

for the potential treatment of SMA. Under this agreement, we have the option to license therapies arising out of this 
collaboration and will be responsible for their development and commercialization of such therapies.

Upon entering into this agreement, we made a $25.0 million upfront payment to Ionis and we may pay Ionis up 

to $260.0 million in additional development and regulatory milestone payments if new drug candidates advance to 
marketing approval. Upon commercialization, we may also pay Ionis up to $800.0 million in additional performance-
based milestone payments and tiered royalties on potential net sales of such therapies.

2013 Long-term Strategic Research Agreement

In September 2013 we entered into a six-year research collaboration agreement with Ionis under which both 

companies collaborate to perform discovery level research and subsequent development and commercialization 
activities of antisense or other therapeutics for the potential treatment of neurological diseases. Under this 
agreement, Ionis performs research on a set of neurological targets identified within the agreement. 

Ionis is 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 under the terms of the agreement. 

For non-ALS antisense product candidates, Ionis is responsible for global development through the completion 

of a Phase 2 trial and we 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. 

In December 2018 we exercised our option with Ionis and obtained a worldwide, exclusive, royalty-bearing 
license to develop and commercialize BIIB067 (tofersen), an investigational treatment for ALS with superoxide 
dismutase 1 (SOD1) mutations. In connection with the option exercise, we made a payment of $35.0 million to Ionis, 
which was recorded as research and development in our consolidated statements of income. Future payments may 
include potential post-licensing milestone payments of up to $55.0 million and royalties in the low to mid-teen 
percentages on potential annual worldwide net sales. We are solely responsible for the costs and expenses related 
to the development, manufacturing and commercialization of tofersen following the option exercise. 

F- 62

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

During the years ending December 31, 2019, 2018 and 2017, we incurred milestones of $20.0 million, $18.0 

million and $12.0 million, respectively, related to the advancement of programs under this agreement, which were 
recorded as research and development expense in our consolidated statements of income.

Eisai Co., Ltd. 

BAN2401 and Elenbecestat Collaboration

We have a collaboration agreement with Eisai Co., Ltd. (Eisai) to jointly develop and commercialize BAN2401, a 

monoclonal antibody that targets amyloid beta aggregates for the potential treatment of AD, and elenbecestat, the 
oral BACE (base amyloid cleaving enzyme) inhibitor (the BAN2401 and Elenbecestat Collaboration). 

In September 2019 we and Eisai announced the decision to discontinue the global Phase 3 studies (MISSION 

AD1 and MISSION AD2) of elenbecestat in early AD. As a result of this decision, in the third quarter of 2019, we 
accrued approximately $48.0 million related to our share of the termination of various clinical trials and research 
and development contracts incurred under the BAN2401 and Elenbecestat Collaboration.

Eisai serves as the global operational and regulatory lead for BAN2401 and all costs, including research, 
development, sales and marketing expenses, are shared equally between us and Eisai. Upon marketing approval we 
and Eisai will co-promote BAN2401 and share profits equally. In addition, the BAN2401 and Elenbecestat 
Collaboration provides both parties with certain rights and obligations in the event of a change in control of either 
party.

The BAN2401 and Elenbecestat Collaboration also provided Eisai with an option to jointly develop and 
commercialize aducanumab, our anti-amyloid beta antibody candidate for early AD (Aducanumab Option), and an 
option to jointly develop and commercialize one of our anti-tau monoclonal antibodies (Anti-Tau Option). In October 
2017 Eisai exercised its Aducanumab Option and we entered into a new collaboration agreement for the joint 
development and commercialization of aducanumab (Aducanumab Collaboration Agreement). Eisai has not yet 
exercised its Anti-Tau Option.

Under the Aducanumab Collaboration Agreement, the two companies will continue to jointly develop BAN2401 

in accordance with the BAN2401 and Elenbecestat Collaboration; however, we are no longer required to pay Eisai any 
milestone payments for products containing BAN2401 and we are no longer entitled to any potential development 
and commercial milestone payments from Eisai in relation to aducanumab. 

A summary of development and sales and marketing expenses related to the BAN2401 and Elenbecestat 

Collaboration is as follows:

(In millions)
Total development expense incurred by the collaboration
related to the advancement of BAN2401 and Elenbecestat
Biogen's share of BAN2401 and Elenbecestat development
expense reflected in research and development expense in
our consolidated statements of income

Total sales and marketing expense incurred by the
collaboration
Biogen's share of BAN2401 and Elenbecestat sales and
marketing expense reflected in selling, general and
administrative expense in our consolidated statements of
income

$

$

$

$

Aducanumab Collaboration Agreement

For the Years Ended December 31,

2019

2018

2017

348.7 $

232.0 $

146.2

174.3 $

116.0 $

74.3

32.4 $

10.7 $

16.2 $

5.4 $

—

—

Under the Aducanumab Collaboration Agreement, the two companies will co-promote aducanumab with a 

region-based profit split and we lead the ongoing development of aducanumab.

In March 2019, based on a pre-specified futility analysis, we discontinued the global Phase 3 trials, EMERGE 

and ENGAGE, designed to evaluate the efficacy and safety of aducanumab in patients with early AD. A new analysis 
of a larger dataset from these trials, conducted in consultation with the FDA, showed that the Phase 3 EMERGE 

F- 63

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

study met its pre-specified primary and secondary endpoints. In October 2019 we and Eisai announced that we plan 
to pursue regulatory approval for aducanumab in the U.S.

For the period through March 31, 2018, we were responsible for 100% of development costs incurred by the 
collaboration for the advancement of aducanumab (aducanumab development expense). For the period April 1, 2018 
through December 31, 2018, Eisai reimbursed us for 15% of aducanumab development expense incurred and 
beginning January 1, 2019, is reimbursing us for 45% of aducanumab development expense incurred. 

In the first quarter of 2019, as a result of the decision to discontinue the Phase 3 EMERGE and ENGAGE trials 

following the futility analysis, we accrued and subsequently paid approximately $45.0 million related to the 
termination of various clinical trials and research and development contracts net of the expected 45% Eisai 
reimbursement of development costs incurred under the Aducanumab Collaboration Agreement.

Upon commercialization, both companies will co-promote aducanumab with a region-based profit split. We will 

receive a 55% share of the potential profits (losses) in the U.S., a 68.5% share of the potential profits (losses) in 
the E.U. and a 20% share of the potential profits (losses) in Japan and Asia, excluding China and South Korea. The 
two companies will continue to share equally in the potential profits (losses) in rest of world markets. Sales and 
marketing expense incurred before commercialization are shared in proportion to the same region-based profit split 
that will be utilized to co-promote aducanumab.

A summary of development and sales and marketing expenses related to the Aducanumab Collaboration 

Agreement is as follows:

(In millions)
Total aducanumab development expense
Biogen's share of aducanumab development expense reflected in
research and development expense in our consolidated
statements of income

Total aducanumab sales and marketing expense incurred by the
collaboration
Biogen's share of aducanumab sales and marketing expense
reflected in selling, general and administrative expense in our
consolidated statements of income

$

$

$

$

For the Years Ended December 31,

2019

2018

2017

179.4 $

264.8 $

268.7

98.7 $

234.6 $

268.7

27.4 $

50.6 $

23.6

15.1 $

27.3 $

23.6

In addition, we and Eisai co-promote AVONEX, TYSABRI and TECFIDERA in Japan in certain settings and Eisai 
distributes AVONEX, TYSABRI, TECFIDERA and PLEGRIDY in India and other Asia-Pacific markets, excluding China.  

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.

Alkermes

In November 2017 we entered into an exclusive license and collaboration agreement with Alkermes for 
VUMERITY, a novel fumarate for the treatment of RMS. In October 2019 the FDA approved VUMERITY in the U.S. for 
the treatment of RMS. In November 2019 VUMERITY became available in the U.S.

Under this agreement, we received an exclusive, worldwide license to develop and commercialize VUMERITY 
and we pay Alkermes a royalty of 15% on worldwide net commercial sales of VUMERITY. Royalties payable on net 
commercial sales of VUMERITY are subject, under certain circumstances, to tiered minimum annual payment 
requirements for a period of five years following FDA approval. 

Alkermes is eligible to receive royalties in the high-single digits to sub-teen double digits of annual net 

commercial sales upon successful development and commercialization of new product candidates, other than 
VUMERITY, developed under the exclusive license from Alkermes. 

Upon entering into this agreement, we made a $28.0 million upfront payment to Alkermes representing our 

share of VUMERITY development costs already incurred in 2017. Beginning in 2018 we became responsible for all 
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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

development expenses related to VUMERITY. In December 2017 we also recognized a $50.0 million expense, which 
was paid to Alkermes in 2018, enabling the continuation of the agreement to develop VUMERITY. Both the $28.0 
million upfront payment and $50.0 million continuation payment were recorded as research and development 
expense in our consolidated financial statements during the year ended December 31, 2017. 

During the fourth quarter of 2019, following the FDA's approval of VUMERITY, we paid Alkermes $155.0 million 

in milestone payments, which were recorded in intangible assets in our consolidated balance sheets and will be 
amortized over the useful life of the product. For the years ended December 31, 2019, 2018 and 2017, we recorded 
$53.5 million, $68.7 million and $80.3 million, respectively, in research and development expense in our 
consolidated statements of income related to this collaboration.

Alkermes currently supplies VUMERITY to us pursuant to a supply agreement with Alkermes. In October 2019 

we entered into a new supply agreement and amended our license and collaboration agreement with Alkermes 
pursuant to which we have the election, following a transition period, to manufacture VUMERITY or have 
manufacturing transitioned to a third party in exchange for an increase in the royalty rate on worldwide net 
commercial sales of VUMERITY that is manufactured by us or our designee.

Bristol-Myers Squibb Company

In June 2017 we completed an exclusive license agreement with Bristol-Myers Squibb Company (BMS) for the 
development and potential commercialization of BIIB092 (gosuranemab), an antibody targeting tau, the protein that 
forms the deposits, or tangles, in the brain associated with AD. 

Under this agreement, we received worldwide rights to gosuranemab and are responsible for the full 
development and potential commercialization of gosuranemab in AD and progressive supranuclear palsy (PSP). 

In December 2019 we announced that the Phase 2 PASSPORT study investigating gosuranemab in individuals 
with PSP did not meet its primary endpoint. Based on these results, we discontinued development of gosuranemab 
in PSP and other primary tauopathies. We will continue our ongoing Phase 2 TANGO study of gosuranemab for mild 
cognitive impairment due to AD or mild AD, given differences in disease pathology.

Upon entering into this agreement, we made an upfront payment of $300.0 million to BMS and assumed all 

remaining obligations to the former shareholders of iPierian, Inc. (iPierian) related to BMS’s acquisition of iPierian in 
2014. In June 2017 we recognized a $60.0 million developmental milestone payable to the former shareholders of 
iPierian upon dosing of the first patient in the Phase 2 PASSPORT study of gosuranemab for PSP.  Both the $300.0 
million upfront payment and the $60.0 million developmental milestone payment were recorded as research and 
development expense in our consolidated statements of income for the year ended December 31, 2017.

We may pay BMS up to $360.0 million in additional milestone payments, and potential royalties, and we may 
pay the former shareholders of iPierian up to $370.0 million in remaining milestone payments as well as potential 
royalties on net commercial sales.

For the years ended December 31, 2019 and 2018, we recorded $144.0 million and $97.0 million, 

respectively, in research and development expense in our consolidated statements of income related to this 
collaboration.

Acorda Therapeutics, Inc.

In June 2009 we entered into a collaboration and license agreement with Acorda Therapeutics, Inc. (Acorda) to 

develop and commercialize products containing fampridine, such as FAMPYRA, in markets outside the U.S. We are 
responsible for all regulatory activities and the future clinical development of related products in those markets. 

Under this agreement, we pay tiered royalties based on the level of ex-U.S. net sales and we may pay potential 

milestone payments based on the successful achievement of certain regulatory and commercial milestones, which 
would be capitalized as intangible assets upon achievement of the milestones and amortized utilizing an economic 
consumption model. The next expected milestone would be $15.0 million, due if ex-U.S. net sales reach $100.0 
million over a period of four consecutive quarters. Royalty payments are recognized in cost of sales within our 
consolidated statements of income.

In connection with the collaboration and license agreement, we also entered into a supply agreement with 

Acorda for the commercial supply of FAMPYRA. This agreement is a sublicense arrangement of an existing 

F- 65

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

agreement between Acorda and Alkermes Inc., who acquired Elan Drug Technologies, the original party to the license 
with Acorda. 

For the years ending December 31, 2019, 2018 and 2017, total cost of sales related to royalties and 

commercial supply of FAMPYRA reflected in our consolidated statements of income were $42.0 million, $36.5 
million and $34.0 million, respectively.

AbbVie Inc.

We have a collaboration agreement with AbbVie for the development and commercialization of ZINBRYTA, which 

was approved for the treatment of RMS in the U.S. in May 2016 and in the E.U. in July 2016. The collaboration 
began selling ZINBRYTA in the third quarter of 2016. In March 2018 we and AbbVie announced the voluntary 
worldwide withdrawal of ZINBRYTA for RMS.

Under this agreement, we and AbbVie conducted ZINBRYTA co-promotion activities in the U.S., E.U. and 

Canadian territories, where development and commercialization costs and profits were shared equally.

We were responsible for manufacturing and research and development activities and recorded these activities 

within their respective lines in our consolidated statements of income, net of any reimbursement of research and 
development expenditures received from AbbVie. For the years ended December 31, 2019, 2018 and 2017, the 
collaboration incurred $0.6 million, $32.4 million and $39.9 million for research and development activities, 
respectively, for which we recognized $0.3 million, $16.2 million and $19.9 million, respectively, in our consolidated 
statements of income. 

Co-promotion Profits and Losses

In the U.S., AbbVie recognized revenues on sales to third parties and we recognized our 50% share of the co-

promotion profits or losses as a component of total revenues in our consolidated statements of income. 

Our share of the co-promotion losses on ZINBRYTA in the U.S. for the year ended December 31, 2019, was 
immaterial. For the years ended December 31, 2018 and 2017, we recognized a net reduction in revenues from 
collaborative and other relationships, a component of other revenues, of $8.6 million and $16.9 million, respectively, 
to reflect our share of the overall net losses within the collaboration for each of those years.

Other Research and Discovery Arrangements 

These arrangements may include the potential for future milestone payments based on the achievement of 

certain clinical and commercial development payable over a period of several years. 

Skyhawk Therapeutics, Inc.

In January 2019 we entered into a collaboration and research and development services agreement with 

Skyhawk Therapeutics, Inc. (Skyhawk) pursuant to which the companies are leveraging Skyhawk's SkySTAR 
technology platform with the goal of discovering innovative small molecule treatments for patients with neurological 
diseases, including MS and SMA. We are responsible for the development and potential commercialization of any 
therapies resulting from this collaboration and we may also pay Skyhawk up to a total of approximately $2.4 billion in 
additional milestone payments as well as potential royalties on net commercial sales.

In connection with this agreement, we made an upfront payment of $74.0 million to Skyhawk, of which $38.5 
million was recorded as research and development expense in our consolidated statements of income and $35.5 
million was recorded as prepaid research and development expenditures within investments and other assets in our 
consolidated balance sheets and will be expensed as the services are provided. In October 2019 we amended this 
agreement to add an additional discovery program. In connection with this amendment, we made a payment to 
Skyhawk of $15.0 million, of which approximately $8.0 million was recorded as research and development and 
approximately $7.0 million was recorded as prepaid research and development expenditures within investments and 
other assets in our consolidated balance sheets.

Other

For the years ended December 31, 2019, 2018 and 2017, we entered into several research, discovery and 
other related arrangements that resulted in $30.6 million, $22.0 million and $10.0 million, respectively, recorded as 
research and development expense in our consolidated statements of income. 

F- 66

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

Samsung Bioepis Co., Ltd.

Joint Venture Agreement

In February 2012 we entered into a joint venture agreement with Samsung BioLogics, establishing an entity, 

Samsung Bioepis, to develop, manufacture and market biosimilar products. Samsung BioLogics contributed 280.5 
billion South Korean won (approximately $250.0 million) for an 85% stake in Samsung Bioepis and we contributed 
49.5 billion South Korean won (approximately $45.0 million) for the remaining 15% ownership interest. In June 2018 
we exercised our option under our joint venture agreement to increase our ownership percentage in Samsung 
Bioepis from approximately 5%, which reflected the effect of previous equity financings in which we did not 
participate, to approximately 49.9%. The share purchase transaction was completed in November 2018 and, upon 
closing, we paid 759.5 billion South Korean won ($676.6 million) to Samsung BioLogics. As of December 31, 2019, 
our ownership percentage remained at approximately 49.9%.

We recognize our share of the results of operations related to our investment in Samsung Bioepis under the 

equity method of accounting one quarter in arrears when the results of the entity become available, which is 
reflected as equity in income (loss) of investee, net of tax in our consolidated statements of income. During 2015, 
as our share of losses exceeded the carrying value of our initial investment, we suspended recognizing additional 
losses. In the first quarter of 2019 we restarted recognizing our share of Samsung Bioepis' income (losses), and we 
began recognizing amortization on certain basis differences resulting from our November 2018 investment.

Upon investment, the equity method of accounting requires us to identify and allocate differences between the 
fair value of our investment and the carrying value of our interest in the underlying net assets of the investee. These 
basis differences are amortized over their economic life. The total basis difference was approximately $675 million, 
consisting of approximately $115 million attributed to inventory, approximately $615 million attributed to developed 
technology and approximately $170 million attributed to IPR&D. A deferred tax liability of $225 million was 
established for the acquired assets that had no tax basis. The basis differences related to inventory and developed 
technology will be amortized, net of tax, over their estimated useful lives of 1.5 years and 15 years, respectively, one 
quarter in arrears.

Our joint venture partner, Samsung BioLogics, is currently subject to an ongoing criminal investigation that we 
continue to monitor. While this investigation could impact the operations of Samsung Bioepis and its business, we 
have assessed the value of our investment in Samsung Bioepis and continue to believe that the fair value of the 
investment is in excess of its net book value.

For the year ended December 31, 2019, we recognized losses on our investment of $79.4 million. These 
losses reflect our share of losses totaling $1.2 million and amortization of basis differences totaling $78.2 million.

As of December 31, 2019 and 2018, the carrying value of our investment in Samsung Bioepis totaled 670.8 
billion South Korean won ($580.2 million) and 759.5 billion South Korean won ($680.6 million), respectively, which 
is classified as a component of investments and other assets within our consolidated balance sheets.

2019 Transaction

In December 2019 we completed a transaction with Samsung Bioepis and secured the exclusive rights to 
commercialize two potential ophthalmology biosimilar products, SB11 referencing LUCENTIS and SB15 referencing 
EYLEA, in major markets worldwide, including the U.S., Canada, Europe, Japan and Australia. Samsung Bioepis will 
be responsible for development and will supply both products to us.

In connection with this transaction, we made an upfront payment of $100.0 million to Samsung Bioepis in 
January 2020, of which $63.0 million was recorded as research and development expense in our consolidated 
statements of income and $37.0 million was recorded as an intangible asset in our consolidated balance sheets. 
Additionally, we may pay Samsung Bioepis up to $210.0 million in additional development, regulatory and sales-
based milestones, including a $15.0 million development milestone that we may pay in 2020. 

We also acquired an option to extend the term of our current European commercial agreement for BENEPALI, 
IMRALDI and FLIXABI by an additional five years, subject to payment of an option exercise fee of $60.0 million, and 
obtained exclusive rights to commercialize these products in China. 

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

2013 Commercial Agreement

In December 2013 pursuant to our rights under the joint venture agreement with Samsung BioLogics, we 
entered into an agreement with Samsung Bioepis to commercialize, over a 10-year term, 3 anti-tumor necrosis factor 
(TNF) biosimilar product candidates in Europe and in the case of BENEPALI, Japan. As discussed above, we have an 
option to extend this agreement by an additional five years. Under this agreement, we have made upfront and clinical 
development milestone payments totaling $46.0 million, which were recorded as research and development expense 
in our consolidated statements of income as the programs they relate to had not achieved regulatory approval. We 
also agreed to make additional milestone payments of $25.0 million upon regulatory approval in the E.U. for each of 
the three anti-TNF biosimilar product candidates. IMRALDI, an adalimumab biosimilar referencing HUMIRA, FLIXABI, 
an infliximab biosimilar referencing REMICADE, and BENEPALI, an etanercept biosimilar referencing ENBREL, 
received regulatory approval in the E.U. in August 2017, May 2016 and January 2016, respectively, and we 
capitalized the related milestone payments totaling $75.0 million as intangible assets, net in our consolidated 
balance sheets.

In April 2018 we and Samsung Bioepis announced an agreement with AbbVie related to the commercialization 
of IMRALDI. Under the terms of the agreement, AbbVie granted us and Samsung Bioepis patent licenses for the use 
and sale of IMRALDI in Europe, on a country-by-country basis, and we make royalty payments to AbbVie on behalf of 
Samsung Bioepis. We began to recognize revenues on sales of IMRALDI to third parties in Europe in the fourth 
quarter of 2018.

We reflect revenues on sales of BENEPALI, IMRALDI and FLIXABI to third parties in product revenues, net in our 

consolidated statements of income and record the related cost of revenues and sales and marketing expenses in 
our consolidated statements of income to their respective line items when these costs are incurred. Royalty 
payments to AbbVie on sales of IMRALDI are recognized in cost of sales within our consolidated statements of 
income. 

We share 50% of the profit or loss related to our commercial agreement with Samsung Bioepis, which is 
recognized in collaboration profit (loss) sharing in our consolidated statements of income. For the years ended 
December 31, 2019, 2018 and 2017, we recognized a net profit-sharing expense of $241.6 million, $187.4 million 
and $111.0 million, respectively, to reflect Samsung Bioepis' 50% sharing of the net collaboration profits. 

Other Services

Simultaneous with the formation of Samsung Bioepis, we also entered into a technical development services 

agreement, a manufacturing agreement and a license agreement with Samsung Bioepis. 

Under the technical development services agreement, we provide Samsung Bioepis technical development and 

technology transfer services, which include, but are not limited to, cell culture development, purification process 
development, formulation development and analytical development. 

Under the manufacturing agreement, we manufacture clinical and commercial quantities of bulk drug substance 

of biosimilar products for Samsung Bioepis pursuant to contractual terms. 

Following the divestiture of our Hillerød, Denmark manufacturing operations in August 2019 FUJIFILM assumed 
responsibility for the manufacture of clinical and commercial quantities of bulk drug substance of biosimilar products 
for Samsung Bioepis. We no longer recognize revenues for the manufacturing completed after the divestiture date 
under the technical development services and manufacturing agreements with Samsung Bioepis. For additional 
information on the divestiture of our Hillerød, Denmark manufacturing operations, please read Note 3, Divestitures, 
to these consolidated financial statements.

Under the license agreement, we granted Samsung Bioepis an exclusive license to use, develop, manufacture 

and commercialize biosimilar products created by Samsung Bioepis using Biogen product-specific technology. In 
exchange, we receive single digit royalties on all biosimilar products developed and commercialized by Samsung 
Bioepis.

For the years ended December 31, 2019, 2018 and 2017, we recognized $106.2 million, $96.4 million and 

$42.7 million, respectively, in revenues under the license, technical development services and manufacturing 
agreements, which is reflected in revenues from collaborative and other relationships, as a component of other 
revenues in our consolidated statements of income. 

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

Amounts receivable from Samsung Bioepis related to the agreements discussed above were $85.0 million and 

$116.9 million as of December 31, 2019 and 2018, respectively. Amounts payable to Samsung Bioepis as of 
December 31, 2019, consisted of the $100.0 million upfront payment related to the 2019 transaction we completed 
in December 31, 2019, as discussed above. Amounts payable to Samsung Bioepis as of December 31, 2018, were 
$31.5 million.

19.  

Investments in Variable Interest Entities

Consolidated Variable Interest Entities

Our consolidated financial statements include the financial results of variable interest entities in which we are 

the primary beneficiary. The following are our significant variable interest entities.

Neurimmune SubOne AG

We have a collaboration and license agreement with Neurimmune SubOne AG (Neurimmune) for the 

development and commercialization of antibodies for the potential treatment of AD, including aducanumab, our anti-
amyloid beta antibody candidate for the potential treatment of AD (as amended, the Neurimmune Agreement). We 
are responsible for the development, manufacturing and commercialization of all licensed products. This agreement 
is effective for the longer of the duration of certain patents relating to a licensed product or 12 years from the first 
commercial sale of any product using such a licensed compound. 

We consolidate the results of Neurimmune as we determined that we are the primary beneficiary of 
Neurimmune because we have the power through the collaboration to direct the activities that most significantly 
impact the entity’s economic performance and we are required to fund 100% of the research and development costs 
incurred in support of the collaboration. 

In October 2017 we amended the terms of the Neurimmune Agreement and made a $150.0 million payment to 

Neurimmune in exchange for a 15% reduction in the previously negotiated royalty rates payable on products 
developed under the Neurimmune Agreement, including royalties payable on potential commercial sales of 
aducanumab. In May 2018 we made an additional $50.0 million payment to Neurimmune to further reduce the 
previously negotiated royalty rates payable on products developed under the Neurimmune Agreement, including 
royalties payable on potential commercial sales of aducanumab, by an additional 5%. Our royalty rates payable on 
products developed under the Neurimmune Agreement, including royalty rates payable on potential commercial sales 
of aducanumab, now range from the high single digits to sub-teens. As we consolidate the results of Neurimmune, 
we treated these payments as distributions and recognized them as charges to noncontrolling interests in the fourth 
quarter of 2017 and the second quarter of 2018, as applicable.

Additionally, under the terms of the Neurimmune Agreement, we would be required to pay Neurimmune a 
milestone payment of $75.0 million upon the regulatory filing with the FDA for approval of aducanumab and a 
milestone payment of $100.0 million if aducanumab is launched in the U.S.

Research and development costs for which we reimburse Neurimmune are reflected in research and 

development expense in our consolidated statements of income. During the years ending December 31, 2019, 2018 
and 2017, amounts reimbursed were immaterial.

The assets and liabilities of Neurimmune are not significant to our consolidated financial position or results of 

operations as it is a research and development organization. We have provided no financing to Neurimmune other 
than previously contractually required amounts.

Under the Aducanumab Collaboration Agreement, Eisai had an option to share in the benefit and cost 

associated with the royalty reductions discussed above; however, Eisai did not elect to share in the benefit and cost 
with respect to either the October 2017 or May 2018 royalty reductions, which will impact the amount of profits 
(losses) on potential commercial sales of aducanumab to be shared with Eisai. For additional information on our 
collaboration arrangements with Eisai, please read Note 18, Collaborative and Other Relationships, to these 
consolidated financial statements.

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

Unconsolidated Variable Interest Entities

We have relationships with various 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, 2019 and 2018, the carrying value of our investments in certain biotechnology companies 
representing potential unconsolidated variable interest entities totaled $22.7 million and $28.7 million, respectively. 
Our maximum exposure to loss related to these variable interest entities is limited to the carrying value of our 
investments.

We have also entered into research collaboration agreements with certain variable interest entities where we 

are required to fund certain development activities. These development activities are included in research and 
development expense in our consolidated statements of income as they are incurred. We have provided no financing 
to these variable interest entities other than previously contractually required amounts. 

20. 

Litigation

We are currently involved in various claims and legal proceedings, including the matters described below. For 
information as to our accounting policies relating to claims and legal proceedings, including use of estimates and 
contingencies, please read Note 1, Summary of Significant Accounting Policies, to these consolidated financial 
statements.

With respect to some loss contingencies, an estimate of the possible loss or range of loss cannot be made 

until management has further information, including, for example, (i) which claims, if any, will survive dispositive 
motion practice; (ii) information to be obtained through discovery; (iii) information as to the parties' damages claims 
and supporting evidence; (iv) the parties’ legal theories; and (v) the parties' settlement positions. 

The claims and legal proceedings in which we are involved also include challenges to the scope, validity or 
enforceability of the patents relating to our products, pipeline or processes, and challenges to the scope, validity or 
enforceability of the patents held by others. These include claims by third parties that we infringe their patents. An 
adverse outcome in any of these proceedings could result in one or more of the following and have a material impact 
on our business or consolidated results of operations and financial position: (i) loss of patent protection; (ii) inability 
to continue to engage in certain activities; and (iii) payment of significant damages, royalties, penalties and/or 
license fees to third parties.

Loss Contingencies 

IMRALDI Patent Litigation

In September 2018 Fresenius Kabi Deutschland GmbH (Fresenius Kabi) commenced proceedings for damages 

and injunctive relief against Biogen France SAS in the Tribunal de Grande Instance de Paris, alleging that IMRALDI, 
the adalimumab biosimilar product of Samsung Bioepis UK Limited that Biogen has commercialized in Europe, 
infringes the French counterpart of European Patent No. 3 148 510 (the '510 Patent), which was issued in June 
2018 and expires in May 2035. No hearing on the merits has been scheduled. 

In October 2018 Fresenius Kabi commenced preliminary injunction proceedings against Biogen (Denmark) 

Manufacturing ApS and Biogen Denmark A/S in Denmark's Maritime and Commercial High Court alleging 
infringement of Danish Utility Models. In June 2019 the Danish court denied Fresenius Kabi's request for a 
preliminary injunction and Fresenius Kabi has appealed that decision.

In November 2018 Fresenius Kabi commenced infringement proceedings for damages and injunctive relief 

against Biogen Italia S.R.L. in the District Court of Milan relating to the Italian counterpart of the ‘510 Patent, and 
against Biogen GmbH in the Düsseldorf Regional Court relating to the German counterpart of the ‘510 Patent. In 
Italy, Fresenius Kabi has surrendered the Italian counterpart of the ‘510 Patent and has moved to dismiss its 
infringement action. A hearing in the proceeding in Germany has not yet been set but is expected to occur after a 
decision on our pending opposition to the ‘510 patent in the EPO.

In July 2019 Gedeon Richter PLC (Gedeon Richter) commenced proceedings against Biogen GmbH in the 
Düsseldorf Regional Court alleging infringement of the German counterpart of European Patent No. 3 212 667 (the 

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

'667 Patent), which was issued in September 2018 and expires in October 2035, and seeking damages and 
injunctive relief. A hearing has been set for November 2020.

In July 2019 Biogen Idec Ltd. (Biogen UK) and Samsung Bioepis UK Limited filed an action in the United 
Kingdom Patents Court to revoke the United Kingdom (U.K.) counterpart of the '667 Patent. In January 2020 the 
U.K. court revoked the patent.

In August 2019 Biogen B.V. (Netherlands) and Samsung Bioepis UK Limited filed an action in the District Court 

of the Hague, Netherlands to revoke the Dutch counterpart of the '667 Patent. Gedeon Richter filed a separate 
action for infringement in the same court and a hearing in both cases has been set for May 2020.

An estimate of the possible loss or range of loss in the pending IMRALDI patent litigation described above 

cannot be made at this time.

Qui Tam Litigation

In July 2015 a qui tam action filed by Michael Bawduniak on behalf of the U.S. and certain states was unsealed 

by the U.S. District Court for the District of Massachusetts. The action alleges sales and promotional activities in 
violation of the federal False Claims Act and state law counterparts and seeks single and treble damages, civil 
penalties, interest, attorneys’ fees and costs. No trial date has been set. The U.S. has not made an intervention 
decision. An estimate of the possible loss or range of loss cannot be made at this time.

Dispute with Former Convergence Shareholders

In November and December 2019 Shareholder Representative Services LLC, on behalf of the former 

shareholders of Convergence, sent us correspondence asserting claims of $200.0 million for alleged breach of the 
contract under which we acquired Convergence. We dispute the claims.

Other Matters

Petition for Inter Partes Review

In July 2018 Mylan Pharmaceuticals, Inc. (Mylan) filed a petition that was granted by the U.S. Patent Trial and 

Appeal Board (PTAB) for inter partes review of our U.S. Patent No. 8,399,514 (the '514 Patent), which covers 
treatment of MS with 480 mg of dimethyl fumarate per day as provided for in our TECFIDERA label. Sawai USA, Inc. 
and Sawai Pharmaceutical Co. Ltd. were later joined as petitioners, but in January 2020 the PTAB terminated their 
involvement in the proceeding. A hearing on Mylan’s petition was held in November 2019 and on February 5, 2020, 
the PTAB issued a final written decision upholding the patentability of the ‘514 Patent.

Hatch-Waxman Act Litigation relating to TECFIDERA Orange-Book Listed Patents

In 2017, 2018 and 2019 we filed patent infringement proceedings relating to TECFIDERA Orange-Book listed 
patents pursuant to the Drug Price Competition and Patent Term Restoration Act of 1984, commonly known as the 
Hatch-Waxman Act, against Accord Healthcare Inc., Alkem Laboratories Ltd., Amneal Pharmaceuticals LLC, Aurobindo 
Pharma U.S.A., Inc., Cipla Limited, Glenmark Pharmaceuticals Ltd., Graviti Pharmaceuticals Pvt. Ltd., Hetero USA, 
Inc., Lupin Atlantis Holdings SA, Macleods Pharmaceuticals, Ltd., MSN Laboratories Pvt. Ltd., Pharmathen S.A., 
Prinston Pharmaceutical Inc., Sandoz Inc., Sawai USA, Inc., Shipla Medicare Limited, Slayback Pharma LLC, Torrent 
Pharmaceuticals Ltd., TWi Pharmaceuticals, Inc., Windlas Healthcare Pvt. Ltd. and Zydus Pharmaceuticals (USA) Inc. 
(the Delaware Defendants) in the U.S. District Court for the District of Delaware (the Delaware Court) and against 
Mylan in the U.S. District Court for the Northern District of West Virginia. The litigation against Aurobindo Pharma 
U.S.A., Inc., Glenmark Pharmaceuticals Ltd. and Sawai USA was dismissed in the fourth quarter of 2019.

A trial against the remaining Delaware Defendants was held in the Delaware Court in December 2019 and we 

are awaiting a decision.

A trial is ongoing in the West Virginia action against Mylan.

We have entered into settlement agreements with some of the Delaware Defendants and we now anticipate 

market entry of a generic product equivalent to TECFIDERA before the ‘514 Patent expires in February 2028.

In December 2018 we filed an action under the Hatch-Waxman Act against Banner Life Sciences LLC (Banner) 

for infringement of our U.S. Patent No. 7,619,001 (the ‘001 patent) expiring on June 20, 2020, and claiming 
treatment of MS with dimethyl fumarate or methyl hydrogen fumarate or a combination thereof. In January 2020 the 
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BIOGEN INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Delaware Court entered judgment that Banner’s drug product does not infringe the ‘001 patent. We have appealed 
the decision.

European Patent Office Oppositions

In 2016 the EPO revoked our European patent number 2 137 537 (the '537 Patent), which covers the 

treatment of MS with 480 mg of dimethyl fumarate as provided for in our TECFIDERA label. We have appealed to the 
Technical Boards of Appeal of the EPO and a hearing has been set for March 2020. 

In March 2018 the EPO revoked Forward Pharma’s European Patent No. 2 801 355, which expires in October 

2025. Forward Pharma has filed an appeal to the Technical Boards of Appeal of the EPO and a hearing has been set 
for June 2020. For additional information regarding this matter, please read Note 6, Intangible Assets and Goodwill, to 
these consolidated financial statements.

TYSABRI Patent Revocation Matters

In November 2017 Bioeq GMBH, affiliated with the Polpharma Group, brought an action in the Polish Patent 
Office seeking to revoke Polish Patent Number 215263 (the Polish '263 Patent), corresponding to our European 
Patent Number 1 485 127 (the E.U. '127 Patent) and covering administration of natalizumab (TYSABRI) to treat MS. 
The Polish '263 Patent expires in February 2023. No hearing on the merits has been set in this matter.

Swiss Pharma International AG, also affiliated with the Polpharma Group, filed actions in the District Court of 

the Hague, Netherlands (January 2016), the German Patents Court (March 2016) and the Commercial Court of 
Rome (November 2017) seeking to invalidate the Dutch, German and Italian counterparts, respectively, of the E.U. 
'127 Patent, which also cover administration of natalizumab (TYSABRI) to treat MS and expire in February 2023. The 
Dutch and German counterparts were ruled invalid. The decision in the Dutch action was affirmed on appeal and a 
hearing has been set for July 2020 in our appeal in the German action. No date for a hearing on the merits has been 
set in the Italian action.

'755 Patent Litigation

In May 2010 Biogen MA Inc. (formerly Biogen Idec MA Inc.) filed a complaint in the U.S. District Court for the 
District of New Jersey alleging infringement by Bayer Healthcare Pharmaceuticals Inc. (Bayer) (manufacturer, marketer 
and seller of BETASERON and manufacturer of EXTAVIA), EMD Serono, Inc. (EMD Serono) (manufacturer, marketer 
and seller of REBIF), Pfizer (co-marketer of REBIF) and Novartis Pharmaceuticals Corp. (Novartis) (marketer and seller 
of EXTAVIA) of our U.S. Patent No. 7,588,755 ('755 Patent), which claims the use of interferon beta for 
immunomodulation or treating a viral condition, viral disease, cancers or tumors. The complaint seeks monetary 
damages, including lost profits and royalties. 

Bayer, Pfizer, Novartis and EMD Serono all filed counterclaims seeking declaratory judgments of patent invalidity 
and non-infringement and seeking monetary relief in the form of costs and attorneys' fees. 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 '755 Patent is invalid, and seeking monetary relief in the form of attorneys' fees, costs 
and expenses.

In September 2018 the trial court entered judgment against EMD Serono and Pfizer that the '755 Patent is 

infringed and valid and ordered a new trial on damages. EMD Serono and Pfizer filed an appeal in the U.S. Court of 
Appeals for the Federal Circuit and oral argument is scheduled for March 2020. The trial court has not yet scheduled 
the new damages trial or a trial against Bayer and Novartis.

Government Matters

We have learned that state and U.S. governmental authorities are investigating our sales and promotional 

practices and have received related subpoenas. We are cooperating with the investigation.

We have received subpoenas and other requests from the U.S. government for documents and information 
relating to our relationship with non-profit organizations that assist patients taking drugs sold by Biogen and the 
government has challenged some of our contributions to these organizations. We are cooperating with the 
investigation and have participated in preliminary discussions with the government regarding potential resolution of 
aspects of the matter. We have accrued the amount of our best estimate of the minimum probable loss in this 
matter.

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

Tax Matter

In the second quarter of 2018 the State Treasury of Goias, Brazil issued tax assessments for the period 2013 
through February 2018 relating to tax on the circulation of goods and totaling approximately $70.0 million including 
interest and penalties. We dispute the assessments and have filed defenses with the Administrative Court of 
Appeals for the State of Goias, which are pending. We have not formed an opinion that an unfavorable outcome of 
the dispute is either probable or remote.

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

Royalty Payments

TYSABRI

In 2013 we acquired from Elan full ownership of all remaining rights to TYSABRI that we did not already own or 

control. Under the acquisition agreement, we are obligated to make contingent payments to Elan of 18% on annual 
worldwide net commercial sales up to $2.0 billion and 25% on annual worldwide net commercial sales that exceed 
$2.0 billion. Royalty payments to Elan and other third parties are recognized as cost of sales in our consolidated 
statements of income. Elan was acquired by Perrigo Company plc (Perrigo) in December 2013 and Perrigo 
subsequently sold its rights to these payments to a third-party effective January 2017.

SPINRAZA

In 2016 we exercised our option to develop and commercialize SPINRAZA from Ionis. Under our agreement with 

Ionis, we make royalty payments to Ionis on annual worldwide net commercial sales of SPINRAZA using a tiered 
royalty rate between 11% and 15%, which are recorded as cost of sales in our consolidated statements of income. 
For additional information on our collaboration arrangements with Ionis, please read Note 18, Collaborative and Other 
Relationships, to these consolidated financial statements.

VUMERITY

In October 2019 the FDA approved VUMERITY for the treatment of RMS. Under our agreement with Alkermes, 

we make royalty payments to Alkermes on worldwide net commercial sales of VUMERITY using a royalty rate of 15%, 
which are recorded as cost of sales in our consolidated statements of income. Royalties payable on net commercial 
sales of VUMERITY are subject, under certain circumstances, to tiered minimum annual payment requirements for a 
period of five years following FDA approval. For additional information on our collaboration arrangement with 
Alkermes, please read Note 18, Collaborative and Other Relationships, to these consolidated financial statements.

Contingent Consideration related to Business Combinations

In connection with our acquisitions of Convergence and BIN, we agreed to make additional payments based 

upon the achievement of certain milestone events. 

As the acquisitions of Convergence and BIN occurred after January 1, 2009, we recognized the contingent 
consideration liabilities associated with these transactions at their fair value on the acquisition date and revalue the 
remaining obligations each reporting period. We may pay up to approximately $735.0 million in remaining milestones 
related to these acquisitions.

Fumapharm AG

In 2006 we acquired Fumapharm AG. As part of this acquisition we acquired the Fumapharm Products. We 
were required to make contingent payments to former shareholders of Fumapharm AG and holders of their rights 
based on the attainment of certain cumulative sales levels of Fumapharm Products and the level of total net sales 
of Fumapharm Products in the prior 12-month period, as defined in the acquisition agreement, until such time as the 
cumulative sales level reached $20.0 billion, at which time no further contingent payments were due. During the first 

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

quarter of 2019 we paid the final $300.0 million contingent payment as we achieved the $20.0 billion cumulative 
sales levels related to the Fumapharm Products in the fourth quarter of 2018.

Contingent Development, Regulatory and Commercial Milestone Payments

Based on our development plans as of December 31, 2019, we could make potential future milestone 
payments to third parties of up to approximately $6.8 billion, including approximately $1.2 billion in development 
milestones, approximately $1.4 billion in regulatory milestones and approximately $4.2 billion in commercial 
milestones, as part of our various collaborations, including licensing and development programs. Payments under 
these agreements generally become due and payable upon achievement of certain development, regulatory or 
commercial milestones. Because the achievement of these milestones was not considered probable as of 
December 31, 2019, 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 or commercial milestones. 

Provided various development, regulatory or commercial milestones are achieved, we anticipate that we may 

pay approximately $430.0 million of milestone payments in 2020, including $75.0 million upon the regulatory filing 
with the FDA for approval of aducanumab and $100.0 million if aducanumab is launched in the U.S.

Other Funding Commitments

As of December 31, 2019, we have several ongoing clinical studies in various clinical trial stages. Our most 

significant clinical trial expenditures are to CROs. The contracts with CROs are generally cancellable, with notice, at 
our option. We recorded accrued expenses of approximately $24.0 million in our consolidated balance sheet for 
expenditures incurred by CROs as of December 31, 2019. We have approximately $514.0 million in cancellable 
future commitments based on existing CRO contracts as of December 31, 2019.

As part of the sale of our Hillerød, Denmark manufacturing operations to FUJIFILM, we have provided FUJIFILM 
with certain minimum batch production commitment guarantees. There is a risk that the minimum contractual batch 
production commitments will not be met. Based upon current estimates we expect to incur an adverse commitment 
obligation of approximately $74.0 million associated with such guarantees and have accrued for this obligation. We 
may adjust this estimate based upon changes in business conditions, which may result in the increase or reduction 
of this adverse commitment obligation in subsequent periods.

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, 2019, we have $136.9 million of net liabilities associated with uncertain tax positions.

As of December 31, 2019 and 2018, we have accrued income tax liabilities of $697.0 million under the 
Transition Toll Tax. Of the amounts accrued as of December 31, 2019, no amounts are expected to be paid within 
one year due to an approximately $87.0 million carryforward of taxes paid in relation to the company's 2017 tax 
return. The Transition Toll Tax will be paid over an eight-year period, which started in 2018, and will not accrue 
interest. For additional information on the Transition Toll Tax, please read Note 16, Income Taxes, to these 
consolidated financial statements.

Solothurn, Switzerland Manufacturing Facility

In order to support our drug development pipeline, we are building a large-scale biologics manufacturing facility 
in Solothurn, Switzerland. We expect this facility to be partially operational by the end of 2020. As of December 31, 
2019, we had contractual commitments of approximately $52.0 million related to the construction of this facility.

22.    Guarantees

As of December 31, 2019 and 2018, 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 

F- 74

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, 2019 and 2018.

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 $44.8 million, $42.2 million and $42.6 million for the years 

ended December 31, 2019, 2018 and 2017, 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 that are paid by the company. These credits are 
known as the Restoration Match. The deferred compensation amounts are accrued when earned. Such deferred 
compensation is distributable in cash in accordance with the rules of the SSP. Deferred compensation amounts 
under such plan as of December 31, 2019 and 2018, totaled approximately $114.6 million and $109.3 million, 
respectively, and are included in other long-term liabilities in our consolidated balance sheets. The SSP also holds 
certain transition contributions on behalf of participants who previously participated in the Biogen, Inc. Retirement 
Plan. The Restoration Match and participant contributions vest immediately. Distributions to participants can be 
either in one lump sum payment or annual installments as elected by the participants.

Pension Plans

Our retiree benefit plans include defined benefit plans for employees in our affiliates in Switzerland and 
Germany as well as other insignificant defined benefit plans in certain other countries where we maintain an 
operating presence.

Our Swiss plan is a government-mandated retirement fund that provides employees with a minimum investment 

return. The minimum investment return is determined annually by the Swiss government and was 1.00% in 2019, 
2018 and 2017. 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, 2019 and 2018, the Swiss plan had an unfunded net pension obligation of $42.9 million and $48.6 
million, respectively, and plan assets that totaled $127.1 million and $93.1 million, respectively. In 2019, 2018 and 
2017 we recognized expense totaling $14.7 million, $14.8 million and $12.3 million, respectively, related to our 
Swiss plan, of which $1.2 million, $1.3 million and $1.1 million, respectively, was included in other income 
(expense), net.

The obligations under the German plans are unfunded and totaled $59.6 million and $45.3 million as of 

December 31, 2019 and 2018, respectively. Net periodic pension cost related to the German plans totaled $5.1 
million, $5.3 million and $5.2 million for the years ended December 31, 2019, 2018 and 2017, respectively, of 
which $1.4 million, $1.5 million and $1.4 million, respectively, was included in other income (expense), net.

24.    Segment Information

We operate as one operating segment, focused on discovering, developing and delivering worldwide innovative 
therapies for people living with serious neurological and neurodegenerative diseases as well as related therapeutic 

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

adjacencies. Our Chief Executive Officer (CEO), as the chief operating decision-maker, manages and allocates 
resources to the operations of our company on a total company basis. Our research and development organization is 
responsible for the research and discovery of new product candidates and supports development and registration 
efforts for potential future products. Our pharmaceutical, operations and technology organization manages the 
development of the manufacturing processes, clinical trial supply, commercial product supply, distribution, buildings 
and facilities. Our commercial organization is responsible for U.S. and international development of our commercial 
products. The company is also supported by corporate staff functions. Managing and allocating resources on a total 
company basis enables our CEO to assess the overall level of resources available and how to best deploy these 
resources across functions, therapeutic areas and research and development projects that are in line with our long-
term company-wide strategic goals. Consistent with this decision-making process, our CEO uses consolidated, single-
segment financial information for purposes of evaluating performance, forecasting future period financial results, 
allocating resources and setting incentive targets.

Enterprise-wide disclosures about product revenues, other revenues and long-lived assets by geographic area 
are presented below. Revenues are primarily attributed to individual countries based on location of the customer or 
licensee.

Geographic Information

The following tables contain certain financial information by geographic area:

December 31, 2019 (In millions)
Product revenues from external customers
Revenues from anti-CD20 therapeutic programs
Other revenues from external customers
Long-lived assets

U.S.

Europe

$ 6,713.8 $ 3,794.5 $
0.2 $
$ 2,211.9 $
$
9.7 $
585.8 $
$ 1,493.2 $ 2,162.9 $

Asia
320.3 $
— $
112.2 $
6.2 $

Other

Total

551.2 $11,379.8
78.3 $ 2,290.4
707.7
12.0 $ 3,674.3

— $

December 31, 2018 (In millions)
Product revenues from external customers
Revenues from anti-CD20 therapeutic programs
Other revenues from external customers
Long-lived assets

U.S.

Europe

$ 6,800.5 $ 3,370.3 $
0.2 $
$ 1,903.4 $
32.7 $
457.0 $
$
$ 1,152.7 $ 2,442.8 $

Asia
281.2 $
— $
96.2 $
3.9 $

Other

Total

434.8 $10,886.8
76.6 $ 1,980.2
585.9
1.8 $ 3,601.2

— $

December 31, 2017 (In millions)
Product revenues from external customers
Revenues from anti-CD20 therapeutic programs
Other revenues from external customers
Long-lived assets

U.S.

Europe

$ 7,017.1 $ 2,844.8 $
0.6 $
$ 1,475.6 $
$
67.8 $
249.5 $
$ 1,226.9 $ 1,948.2 $

Asia
160.1 $
— $
42.7 $
5.2 $

Other

Total

332.7 $10,354.7
83.0 $ 1,559.2
360.0
2.1 $ 3,182.4

— $

Other

As of December 31, 2019, 2018 and 2017, approximately $2,028.8 million, $1,748.5 million and $1,215.7 

million, respectively, of our long-lived assets were related to the construction of our large-scale biologics 
manufacturing facility in Solothurn, Switzerland.

In August 2019 we completed the sale of all of the outstanding shares of our subsidiary that owned our 

biologics manufacturing operations in Hillerød, Denmark to FUJIFILM. As of December 31, 2018 and 2017, 
approximately $646.5 million and $707.1 million, respectively, of our long-lived assets were related to our 
manufacturing facility in Hillerød, Denmark.

For additional information on our large-scale biologics manufacturing facility in Solothurn, Switzerland, please 
read Note 10, Property, Plant and Equipment, to these consolidated financial statements. For additional information 
on the divestiture of our Hillerød, Denmark manufacturing operations, please read Note 3, Divestitures, to these 
consolidated financial statements.

F- 76

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

25.    Quarterly Financial Data (Unaudited)

(In millions, except per share amounts)
2019
Product revenues, net
Revenues from anti-CD20 therapeutic
programs
Other revenues
Total revenues
Gross profit (1)
Net income (a)
Net income attributable to Biogen Inc. (a)
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.

(In millions, except per share amounts)

2018
Product revenues, net
Revenues from anti-CD20 therapeutic
programs
Other revenues
Total revenues
Gross profit (1)
Net income (b)
Net income attributable to Biogen Inc. (b)
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

2,680.0 $

2,880.3 $ 2,894.7 $

2,924.8 $ 11,379.8

517.4 $
292.4 $
3,489.8 $
2,887.8 $
1,408.8 $
1,408.8 $

576.4 $
160.0 $

595.8 $
109.6 $
3,616.7 $ 3,600.1 $
3,140.4 $ 3,170.1 $
1,494.1 $ 1,545.9 $
1,494.1 $ 1,545.9 $

600.8 $
145.7 $

2,290.4
707.7
3,671.3 $ 14,377.9
3,224.2 $ 12,422.5
5,888.5
1,439.7 $
5,888.5
1,439.7 $

7.17 $

7.85 $

8.40 $

8.10 $

31.47

7.15 $

7.85 $

8.39 $

8.08 $

31.42

196.6

197.0

190.3

184.0

190.4

184.2

177.8

178.2

187.1

187.4

First
Quarter

Second
Quarter

Third
Quarter

Fourth
Quarter

Total
Year

2,523.5 $

2,757.5 $ 2,780.1 $

2,825.7 $ 10,886.8

443.2 $
164.4 $
3,131.1 $
2,685.1 $
1,171.2 $
1,172.9 $

490.4 $
108.6 $

511.7 $
147.2 $
3,356.5 $ 3,439.0 $
2,935.5 $ 2,978.2 $
915.0 $ 1,442.9 $
866.6 $ 1,444.4 $

534.9 $
165.7 $

1,980.2
585.9
3,526.3 $ 13,452.9
3,037.8 $ 11,636.6
4,474.0
4,430.7

944.9 $
946.8 $

5.55 $

4.18 $

7.17 $

4.74 $

21.63

5.54 $

4.18 $

7.15 $

4.73 $

21.58

211.4

211.7

207.1

201.4

207.3

201.9

199.8

200.3

204.9

205.3

(1) Gross profit is calculated as total revenues less cost of sales, excluding amortization and impairment of acquired intangible 
assets.

(a)  Net income and net income attributable to Biogen Inc. for 2019 include:

•  Pre-tax gains (losses) related to changes in the fair value of our strategic investments of $376.1 million, 

($174.2) million, ($4.6) million and $2.8 million for the first, second, third and fourth quarters, respectively.

F- 77

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

• 

Impairment charges related to certain intangible assets of $215.9 million in the third quarter. For additional 
information, please read Note 6, Intangible Assets and Goodwill, to these consolidated financial statements. 

•  A total net loss in our consolidated statements of income of approximately $124.2 million related to the 
sale of all the outstanding shares of our subsidiary that owned our biologics manufacturing operations in 
Hillerød, Denmark to FUJIFILM. This loss included a pre-tax loss of $55.3 million and a tax expense of $68.9 
million related to this transaction. For additional information on the divestiture of our Hillerød, Denmark 
manufacturing operations, please read, Note 3, Divestitures, to these consolidated financial statements.

•  An expense of $63.0 million was recorded in research and development expense in our consolidated 
statements of income in the fourth quarter as we completed a transaction with Samsung Bioepis and 
secured the exclusive rights to commercialize two potential ophthalmology biosimilar products, SB11 
referencing LUCENTIS and SB15 referencing EYLEA, in major markets worldwide, including the U.S., Canada, 
Europe, Japan and Australia. We also acquired an option to extend our existing commercial agreement with 
Samsung Bioepis for BENEPALI, IMRALDI and FLIXABI in Europe and obtained exclusive rights to 
commercialize these products in China. For additional information, please read, Note 18, Collaborative and 
Other Relationships, to these consolidated financial statements.

•  Losses (gains) related to the adjustments to the fair values of our contingent consideration obligations of 
$11.5 million, $(20.0) million, $(57.8) million and $2.6 million for the first, second, third and fourth 
quarters, respectively. For additional information on the valuation of our contingent consideration obligations, 
please read Note 7, Fair Value Measurements, to these consolidated financial statements. 

•  A payment of $45.0 million to Ionis in the fourth quarter, as we exercised our option to obtain a worldwide, 

exclusive, royalty-bearing license from Ionis to develop and commercialize BIIB080. For additional 
information, please read, Note 18, Collaborative and Other Relationships, to these consolidated financial 
statements.

•  A payment of $38.5 million to Skyhawk in the first quarter as we entered into a collaboration and research 
and development services agreement with Skyhawk pursuant to which the companies are leveraging 
Skyhawk's SkySTAR technology platform with the goal of discovering innovative small molecule treatments 
for patients with neurological diseases, including MS and SMA. For additional information, please read, Note 
18, Collaborative and Other Relationships, to these consolidated financial statements.

(b)  Net income and net income attributable to Biogen Inc. for 2018 include:

•  Pre-tax (losses) gains related to changes in the fair value of our strategic investments of $(6.4) million, $5.4 

million, $141.2 million and $(12.2) million for the first, second, third and fourth quarters, respectively.

•  Pre-tax charges to acquired IPR&D of $10.0 million, $75.0 million and $27.5 million for the first, second and 
third quarters, respectively, for upfront payments made upon closing of asset purchase transactions. For 
additional information, please read Note 2, Acquisitions, to these consolidated financial statements.

•  Pre-tax research and development expenses for the second quarter of $486.2 million related to the 2018 

Ionis Agreement. For additional information, please read, Note 18, Collaborative and Other Relationships, to 
these consolidated financial statements.

•  Pre-tax charge to noncontrolling interests of $50.0 million for the second quarter for a payment to 

Neurimmune in exchange for a 5% reduction in the previously negotiated royalty rates payable on products 
developed under the Neurimmune Agreement, including royalties payable on potential commercial sales of 
aducanumab. For additional information, please read Note 19, Investments in Variable Interest Entities, to 
these consolidated financial statements.

• 

Impairment charges related to certain intangible assets of $189.3 million and $176.8 million in the third 
and fourth quarters, respectively. For additional information, please read Note 6, Intangible Assets and 
Goodwill, to these consolidated financial statements. 

•  Losses (gains) related to the adjustments to the fair values of our contingent consideration obligations of 

$(5.6) million, $1.9 million, $(87.9) million and $79.3 million for the first, second, third and fourth quarters, 

F- 78

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

respectively. For additional information, please read Note 7, Fair Value Measurements, to these consolidated 
financial statements. 

•  Net increase to income tax expense of $135.8 million for the fourth quarter reflecting the impact of electing 
to record deferred taxes on GILTI. For additional information, please read Note 16, Income Taxes, to these 
consolidated financial statements.

•  An upfront payment of $35.0 million to Ionis, as we exercised our option in the fourth quarter to obtain a 

worldwide, exclusive, royalty-bearing license from Ionis to develop and commercialize tofersen. For additional 
information, please read Note 18, Collaborative and Other Relationships, to these consolidated financial 
statements.

26.    Subsequent Events

Pfizer Inc.

In January 2020 we entered into an agreement to acquire PF-05251749, a novel CNS-penetrant small molecule 

inhibitor of casein kinase 1, for the potential treatment of patients with behavioral and neurological symptoms 
across various psychiatric and neurological diseases from Pfizer. In particular, we plan to develop the Phase 1 asset 
for the treatment of sundowning in AD and irregular sleep wake rhythm disorder in Parkinson’s disease. In connection 
with the closing of this transaction, we will make an upfront payment of $75.0 million to Pfizer, which will be recorded 
as acquired IPR&D in our consolidated statements of income as PF-05251749 has not yet reached technological 
feasibility. We may also pay Pfizer up to $635.0 million in potential additional development and commercialization 
milestone payments, as well as tiered royalties in the high single digits to sub-teens.

This transaction will be accounted for as an asset acquisition and is subject to customary closing conditions, 
including the expiration of the applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 
1976 in the U.S. We expect the transaction to close in the first quarter of 2020.

2020 Credit Facility

In January 2020 we entered into a $1.0 billion, five-year senior unsecured revolving credit facility under which 

we are permitted to draw funds for working capital and general corporate purposes. The terms of the revolving credit 
facility include a financial covenant that requires us not to exceed a maximum consolidated leverage ratio. This 
revolving credit facility replaced the revolving credit facility entered into in August 2015.

F- 79

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of Biogen Inc.

Opinions on the Financial Statements and Internal Control over Financial Reporting

We have audited the accompanying consolidated balance sheets of Biogen Inc. and its subsidiaries (the “Company”) 
as of December 31, 2019 and 2018, and the related consolidated statements of income, comprehensive income, 
equity and cash flows for each of the three years in the period ended December 31, 2019, including the related 
notes (collectively referred to as the “consolidated financial statements”). We also have audited the Company's 
internal control over financial reporting as of December 31, 2019, based on criteria established in Internal Control - 
Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission 
("COSO").  

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the 
financial position of the Company as of December 31, 2019 and 2018, and the results of its operations and its cash 
flows for each of the three years in the period ended December 31, 2019, 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, 2019, based on criteria established 
in Internal Control - Integrated Framework (2013) issued by the COSO.

Changes in Accounting Principles

As discussed in Note 1 to the consolidated financial statements, the Company changed the manner in which it 
accounts for leases in 2019 and the manner in which it accounts for income taxes for intra-entity transfers of assets 
other than inventory in 2018.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, for maintaining effective 
internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial 
reporting, included in Management’s Annual Report on Internal Control over Financial Reporting appearing under 
Item 9A. Our responsibility is to express opinions on the Company’s consolidated financial statements and on the 
Company's internal control over financial reporting based on our audits. We are a public accounting firm registered 
with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent 
with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and 
regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and 
perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of 
material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting 
was maintained in all material respects.  

Our audits of the consolidated financial statements included performing procedures to assess the risks of material 
misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures 
that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts 
and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting 
principles used and significant estimates made by management, as well as evaluating the overall presentation of the 
consolidated financial statements. Our audit of internal control over financial reporting included obtaining an 
understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and 
testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our 
audits also included performing such other procedures as we considered necessary in the circumstances. We 
believe that our audits provide a reasonable basis for our opinions.

F- 80

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance 
regarding the reliability of financial reporting and the preparation of financial statements for external purposes in 
accordance with generally accepted accounting principles. A company’s internal control over financial reporting 
includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, 
accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable 
assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance 
with generally accepted accounting principles, and that receipts and expenditures of the company are being made 
only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable 
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.

Critical Audit Matters

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated 
financial statements that was communicated or required to be communicated to the audit committee and that (i) 
relates to accounts or disclosures that are material to the consolidated financial statements and (ii) involved our 
especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter 
in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by 
communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the 
accounts or disclosures to which it relates.

Reserves for Medicaid and Managed Care Rebates  

As described in Notes 1 and 4 to the consolidated financial statements, the Company recognized revenue from 
product sales net of reserves, including Medicaid and managed care rebates. Within Accrued expenses and other, 
total contractual adjustments amounted to $1,027.3 million as of December 31, 2019. This balance primarily 
includes provisions for Medicaid and managed care rebates in the U.S. Medicaid rebates relate to the Company’s 
estimated obligations to states under established reimbursement arrangements. The Company’s 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. Managed care rebates represent the Company’s obligations to third parties, 
primarily pharmacy benefit managers.  Managed care rebates result from performance-based goals, formulary 
position and price increase limit allowances (price protection). The calculation of the accrual of the managed care 
rebate 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. As disclosed by management, the Medicaid and managed care 
estimates reflect historical experience, current contractual and statutory requirements, specific known market events 
and trends, industry data and forecasted customer buying and payment patterns.

The principal considerations for our determination that performing procedures relating to reserves for Medicaid and 
managed care rebates is a critical audit matter are there was significant judgment by management due to the 
significant measurement uncertainty involved in developing these reserves, as the reserves are based on 
assumptions developed using historical experience, current contractual requirements, specific known market events 
and payment patterns. This in turn led to a high degree of auditor judgment, subjectivity and effort in applying 
procedures related to these assumptions.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our 
overall opinion on the consolidated financial statements.  These procedures included testing the effectiveness of 
controls relating to the reserves for Medicaid and managed care rebates, including controls over the assumptions 
used to estimate these rebate reserves. These procedures also included, among others, (i) developing an 
independent estimate of the rebate reserves by utilizing third party data related to product demand, data related to 
price changes, the terms of the specific rebate programs, the historical trend of actual rebate claims paid and 

F- 81

 
 
 
 
consideration of contractual requirement changes and market events; (ii) comparing the independent estimate to 
management’s estimate, and (iii) testing rebate claims paid by the Company, including evaluating the claims for 
consistency with the contractual terms of the Company’s rebate agreements.

/s/PricewaterhouseCoopers LLP
Boston, Massachusetts
February 6, 2020 

We have served as the Company's auditor since 2003.

F- 82

 
 
CORPORATE INFORMATION

Biogen  2019 Annual  Report

Board of Directors (as of April 10, 2020) 

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

Richard C. Mulligan, Ph.D.
Mallinckrodt Professor of Genetics, Emeritus, 
Harvard Medical School and Executive  
Vice Chairman, Sana Biotechnology

Michel Vounatsos
Chief Executive Officer, Biogen Inc.

Alexander J. Denner, Ph.D.
Founding Partner and Chief Investment  
Officer, Sarissa Capital Management LP

Caroline D. Dorsa
Retired Executive Vice President and  
Chief Financial Officer, Public Service  
Enterprise Group Incorporated

William A. Hawkins
Senior Advisor, EW Healthcare Partners

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

Jesus B. Mantas
Senior Managing Partner for Global  
Strategy, Platforms and Innovation,  
IBM Global Business Services

Robert W. Pangia
Retired Chief Executive Officer,  
Ivy Sports Medicine, LLC

Brian S. Posner
Private Investor and Founder and  
Managing Partner, Point Rider Group LLC

Eric K. Rowinsky, M.D.
President and Executive Chairman, RGenix, Inc.

The Honorable Lynn Schenk, J.D.
Attorney, Former Chief of Staff to the Governor  
of California and Former U.S. Congresswoman

Stephen A. Sherwin, M.D.
Clinical Professor of Medicine, University  
of California, San Francisco and Advisor to  
Life Sciences Companies

 
Independent accountant
PricewaterhouseCoopers LLP 
101 Seaport Boulevard
Boston, MA 02210

News releases
As a service to our stockholders and prospective 
investors, Biogen’s news releases are usually posted 
within one hour of being issued and are available at 
no cost at investors.biogen.com.

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

Biogen  2019 Annual  Report 

CORPORATE INFORMATION

Stockholder Information 

Corporate headquarters
Biogen Inc.
225 Binney Street
Cambridge, MA 02142
Phone: (617) 679-2000

SEC Form 10-K
A copy of Biogen’s Annual Report 
on Form 10-K filed with the U.S. 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 stockholder questions regarding lost stock  
certificates, address changes and changes of 
ownership or names in which the shares are held, 
direct inquiries to:

Computershare 
Phone: (781) 575-2879
Toll Free Phone: (877) 282-1168
computershare.com

By regular mail:
P.O. Box 505000
Louisville, KY 40233-5000

By overnight delivery:
462 South 4th Street
Suite 1600
Louisville, KY 40202

 
 
PERFORMANCE HIGHLIGHTS

Total Revenues  
($ in millions)

Product Revenues 
($ in millions and % of total product revenues)

$14,378

2019

2018

2019

2018

2017

2016

2015

$13,453

$12,274

$11,449

$10,764

SPINRAZA
$2,097  $1,724
18.4%  15.8%

TYSABRI
$1,892  $1,864
16.6%  17.1%

Other 4
$851  $662
6.1%
7.5% 

TECFIDERA
$4,433  $4,274
38.95%    39.3%

VUMERITY5
$6          –
0.05%           –

Interferon6
$2,102  $2,363
18.5%    21.7%

GAAP Diluted EPS/Non-GAAP Diluted EPS 1

2019

2018

2017

2016

2015

$31.42

$33.57

$21.582

$26.20

$11.922

$21.81

Product Revenues by Region (% of total product revenues) 

$16.93

$20.22

  U.S. 

  Rest of the world

$15.34

$17.01

2019

2018

2017

Free Cash Flow 1,3  
($ in millions) 

41%

37%

32%

59%

63%

68%

$6,264

$3,917

2019

2018

2017

2016

2015

$2,484

$2,706

$2,223

1   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 9–13 of this Annual Report.
2   GAAP diluted EPS for 2018 and 2017 includes charges of $125 million and  

$1,176 million, respectively, related to the impact of the Tax Cuts and Jobs Act of 2017.

3   Free Cash Flow for 2016 through 2019 reflects an increase in capital expenditures 
related to the construction of our large-scale biologics manufacturing facility in 
Solothurn, Switzerland.

4   For 2019 and 2018 Other includes product revenues from FAMPYRA, FUMADERM, 

BENEPALI, FLIXABI and IMRALDI. For 2018 Other also includes product revenues from 
ZINBRYTA, which was voluntary withdrawn from the market in March 2018. 

5   VUMERITY was approved by the U.S. Food and Drug Administration in  
October 2019 and became available in the U.S. in November 2019.

6  Interferon includes AVONEX and PLEGRIDY.

+4.5%

increase in total 
product revenues 
year over year

100%

total renewal 
electricity purchased 
by Biogen

46%

of manager-level  
and above positions 
held by women

Concept, design and realization 
PETRANIX Corporate and Financial Communications AG
Adliswil, Zurich – Switzerland
www.petranix.com

Printing
Donnelley Financial Solutions, dfinsolutions.com

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2019