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Biogen

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FY2018 Annual Report · Biogen
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2018 
2018 
2018 
2018 
ANNUAL 
ANNUAL 
ANNUAL 
ANNUAL 
REPORT
REPORT
REPORT
REPORT

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
02
02

HIGHLIGHTS & CONTENTS
HIGHLIGHTS & CONTENTS

CEO LETTER
CEO LETTER

STRATEGY
STRATEGY

CULTURE & ENGAGEMENT
CULTURE & ENGAGEMENT

PRODUCTS & PIPELINE
PRODUCTS & PIPELINE

EXECUTIVE COMMITTEE
EXECUTIVE COMMITTEE

PRODUCTS & PIPELINE

EXECUTIVE COMMITTEE

STRATEGY

CEO LETTER

HIGHLIGHTS & CONTENTS

CULTURE & ENGAGEMENT

Total Revenues ($ in millions)
Total Revenues ($ in millions)

Strong financial performance
S Strong financial performance
S Strong financial performance
Strong financial performance
T
T
02
H
H
G
G
I
I
S Strong financial performance
Strong financial performance
L
L
H
H
T
H
G
G
G
H
H
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G

2015
2015
Total Revenues ($ in millions)

Other 4
Other 4
$662 
$662 
6% 
6% 

$638
$638
5%
5%

I
I

2014
2014
2018

$10,764
$10,764

$11,449
$11,449

$12,274
$12,274

$12,274

$13,453
$13,453

$13,453

$9,703
$9,703

2017
2017

2018
2018

2016
2016

2017

2018
2018

2017
2017

2017
2017

TYSABRI
TYSABRI
2017
2018
$1,864  $1,973
$1,864  $1,973
Other 4
17% 
17% 
$662 
6% 

19%
19%
$638
5%

SPINRAZA
SPINRAZA
Product Revenues 
$1,724  $884
$1,724  $884
9%
9%
16% 
16% 
($ in millions and % of total product revenues)

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

TECFIDERA
TECFIDERA
$4,274  $4,214
$4,274  $4,214
39% 
39% 

41%
41%

2018
2018

Interferon5
Interferon5
$2,363  $2,646
$2,363  $2,646
TECFIDERA
22% 
22% 
$4,274  $4,214
39% 

41%

26%
26%

I

H

$11,449

2016
GAAP Diluted EPS/Non-GAAP Diluted EPS 1
GAAP Diluted EPS/Non-GAAP Diluted EPS 1
2015
2018
2018
2014
2017
2017

$10,764
$21.582
$21.582

$9,703

$26.20
$26.20

$11.922
$11.922

$21.81
$21.81

2016
2016

$16.93
$16.93

$20.22
$20.22

$15.34
$15.34

2015
2015
GAAP Diluted EPS/Non-GAAP Diluted EPS 1
2014
2014
2018

$13.83
$13.83

$12.37
$12.37

$17.01
$17.01

$21.582

$26.20

9%

2017

+ 5 %
+ 5 %

SPINRAZA
$1,724  $884
16% 
Increase in total product revenues year over year
Increase in total product revenues year over year
TYSABRI
Interferon5
$1,864  $1,973
$2,363  $2,646
17% 
22% 

2018

19%

26%

+ 5 %

2017

$11.922

$21.81

Increase in total product revenues year over year

Free Cash Flow 1,3 ($ in millions) 
Free Cash Flow 1,3 ($ in millions) 
2016

$16.93

$20.22

2018
2018
2015

2017
2017
2014

2016
2016

$15.34

$17.01

$3,917
$3,917

$12.37

$2,484
$2,484

$13.83

$2,706
$2,706

2015
2015
Free Cash Flow 1,3 ($ in millions) 

$2,223
$2,223

62.5%
62.5%

Product Revenues by Region  
Product Revenues by Region  
(% of total product revenues)
(% of total product revenues)

  U.S. 
  U.S. 

  Rest of the world
  Rest of the world

2018
2018

37.5%
37.5%

67.8%
67.8%

2017
2017

32.2%
32.2%

Product Revenues by Region  
(% of total product revenues)

2014
2014
2018

2017

2016

2015

$2,279
$2,279

$3,917

$2,484

$2,706

$2,223

  U.S. 

  Rest of the world

71.8%
71.8%

2016
2016

28.2%
28.2%

62.5%

2018

37.5%

67.8%

2017

32.2%

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2014
1   Non-GAAP diluted earnings per share (EPS) and Free Cash Flow are  
1   Non-GAAP diluted earnings per share (EPS) and Free Cash Flow are  

$2,279

Non-GAAP financial measures. A reconciliation of GAAP to Non-GAAP  
Non-GAAP financial measures. A reconciliation of GAAP to Non-GAAP  
diluted EPS and Free Cash Flow amounts is set forth on pages 19–21  
diluted EPS and Free Cash Flow amounts is set forth on pages 19–21  
of this Annual Report.
of this Annual Report.

2   GAAP diluted EPS for 2018 and 2017 includes charges of $125 million and 
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 
$1,176 million, respectively, related to the impact of the Tax Cuts and Jobs 
Act of 2017.
Act of 2017.

3   Free Cash Flow for 2018 and 2017 reflects an increase in capital  
3   Free Cash Flow for 2018 and 2017 reflects an increase in capital  

expenditures related to the construction of our large-scale biologics 
expenditures related to the construction of our large-scale biologics 
manufacturing facility in Solothurn, Switzerland.
manufacturing facility in Solothurn, Switzerland.

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 19–21  
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 2018 and 2017 reflects an increase in capital  

expenditures related to the construction of our large-scale biologics 

4   For 2018 and 2017 Other includes product revenues from FAMPYRA, 
4   For 2018 and 2017 Other includes product revenues from FAMPYRA, 
FUMADERM, BENEPALI, FLIXABI and ZINBRYTA. For 2018 Other also 
FUMADERM, BENEPALI, FLIXABI and ZINBRYTA. For 2018 Other also 
includes product revenues from IMRALDI, which was launched in Europe 
includes product revenues from IMRALDI, which was launched in Europe 
in October 2018. For 2017 Other also includes product revenues from 
in October 2018. For 2017 Other also includes product revenues from 
ALPROLIX and ELOCTATE through January 31, 2017. No product revenues for 
ALPROLIX and ELOCTATE through January 31, 2017. No product revenues for 
ALPROLIX and ELOCTATE were recognized subsequent to February 1, 2017, 
ALPROLIX and ELOCTATE were recognized subsequent to February 1, 2017, 
the effective date of the spin-off of our hemophilia business.
the effective date of the spin-off of our hemophilia business.

28.2%

71.8%

2016

5  Interferon includes AVONEX and PLEGRIDY. 
5  Interferon includes AVONEX and PLEGRIDY. 

4   For 2018 and 2017 Other includes product revenues from FAMPYRA, 
FUMADERM, BENEPALI, FLIXABI and ZINBRYTA. For 2018 Other also 
includes product revenues from IMRALDI, which was launched in Europe 
in October 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.

manufacturing facility in Solothurn, Switzerland.

5  Interferon includes AVONEX and PLEGRIDY. 

 
 
 
 
 
 
 
 
 
 
 
 
HIGHLIGHTS & CONTENTS

CEO LETTER

STRATEGY

CULTURE & ENGAGEMENT

PRODUCTS & PIPELINE

EXECUTIVE COMMITTEE

03

002  Highlights
004  CEO Letter
008  Strategy
010  Culture & Engagement
014  Products & Pipeline
018  Executive Committee

019  GAAP to Non-GAAP Reconciliation
022  Safe Harbor
023
215  Corporate Information

2018 Annual Report on Form 10-K

COVER: Natalia Wylie and daughter Sofia, who has 
infantile onset (Type 1) SMA treated with SPINRAZA.

THIS PAGE: Nuclear Magnetic Resonance (NMR) 
is used to characterize small molecules and ASOs. 
Using NMR instruments, we can identify impurities 
that may occur during synthesis.

Biogen is focused on 
discovering, developing 
and delivering innovative 
therapies for people living 
with serious neurological and 
neurodegenerative diseases.

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04

HIGHLIGHTS & CONTENTS

CEO LETTER

STRATEGY

CULTURE & ENGAGEMENT

PRODUCTS & PIPELINE

EXECUTIVE COMMITTEE

R
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Building for sustainable leadership 

My fellow stockholders,

2018 was an important year as we took significant steps 
in strengthening our leadership in our core business and 
advancing our pipeline. 

However, before I comment on our 2018 
performance, I would like to acknowledge 
the discontinuation of the Phase 3   
ENGAGE and EMERGE stud-
ies of aducanumab in 
Alzheimer's disease (AD) 
that we announced in 
March 2019.

This disappointing news 
reaffirmed the complexity 
of treating AD. We are 
grateful to the patients, 
their families and inves-
tigators who participated 
in the studies. We know 
that the sobering reality 
of drug discovery is that 
many studies will fail before 
one succeeds. We are committed to 
learning from these clinical studies and 
furthering the scientific understanding of this 
terrible disease. 

increasing as the aging population continues to grow. 
Few other areas of medicine hold as much promise for 
scientific breakthroughs. 

In 2018 we maintained our market leadership in our core 

franchise of multiple sclerosis (MS) and made prog-
ress toward building a neuromuscular disease 

franchise with the expansion of SPINRAZA, 
the first approved treatment for 

spinal muscular atrophy (SMA), 
a rare neurological disease.

Our view is that neurolog-
ical diseases are deeply 
connected. Because the 
pathways of these diseas-
es are interrelated, we 
believe the potential ap-
proaches for treating them 
are as well. Our success 
in MS gives us insight into 
many other disease areas. 
For example, research in 
remyelination and repair, 

neuroprotection and axonal 
health could have applications in 
AD, amyotrophic lateral sclerosis (ALS), 

Parkinson’s disease, stroke and pain. 

We believe our foundation and future remain strong. 
Neurological diseases are the #1 cause of disability and 
the #2 cause of death worldwide1. The prevalence and 
societal burden of these diseases are massive and are 

We are working to build a multi-franchise therapeutic 
portfolio and to create new sources of value by 
diversifying our pipeline. In 2018 we made progress in 
movement disorders such as Parkinson’s disease and in 
neuromuscular disorders such as ALS.

1   Source: Lancet Neurology, 2017; DRG 2017, American Heart Association, American Parkinson’s Disease Association, The ALS Association.

Achievements in 2018

JANUARY

 – Acquired BIIB100 (XPO1

inhibitor), a Phase 1 ready
asset primarily for ALS

APRIL

 – Acquired BIIB104 (AMPA),
a first-in-class Phase 2b
asset for CIAS

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MAY

 – Initiated Phase 2

TANGO study of BIIB092 
(gosuranemab) for AD

 
 
 
 
HIGHLIGHTS & CONTENTS

CEO LETTER

STRATEGY

CULTURE & ENGAGEMENT

PRODUCTS & PIPELINE

EXECUTIVE COMMITTEE

05

We are working to  
build a multi-franchise 
therapeutic portfolio and  
to create new sources  
of value by diversifying  
our pipeline.

2018 core business performance 
In 2018 we generated an all-time 
high of $13.5 billion in total revenues 
for the year, a 10% increase over 
the prior year, and we generated net 
cash flows from operations of $6.2 bil-
lion. GAAP diluted earnings per share for 2018 
were $21.58, an increase of 81% over 2017, and 
Non-GAAP diluted earnings per share increased 20% 
over the prior year to $26.20.

These results reflect the resilience of our core MS busi-
ness, the continued strong global launch of SPINRAZA 
and the ongoing growth of our biosimilar business. 

With approximately 35% of MS patients treated with 
our medicines globally, in 2018 we continued to be 
the leader in MS, and we remain firmly committed 
to the MS community. Our MS portfolio ranges from 
symptomatic treatments to disease modifying therapies, 
which enables us to address diverse patient needs 
across disease stages, and we have continued to push 
forward. In December Alkermes, with whom we have 
a license and collaboration agreement, submitted a 
New Drug Application (NDA) to the U.S. Food and Drug 
Administration (FDA) for diroximel fumarate (BIIB098), a 
potential treatment for relapsing forms of MS (RMS). If 
approved, we will be responsible for marketing diroximel 
fumarate, which we plan to do under the brand name 
VUMERITY, a name conditionally accepted by the FDA.

In SMA, SPINRAZA revenues for 2018 nearly doubled 
year over year with total global revenues of $1.7 billion, 
which was driven by strong revenue growth in both the 

U.S. and international markets. Since 
its launch two years ago, SPINRAZA, 
our first product based on the anti-
sense oligonucleotide (ASO) platform, 
has become the standard of care in 
SMA. By the end of 2018 SPINRAZA had 
been approved in over 40 countries and had 

received formal reimbursement in 30 countries. 

Including clinical trials and our Expanded Access 
Program, as of year-end, more than 6,600 patients  
have benefited from this remarkable therapy. 

Additionally, in November, SPINRAZA won the prestigious 
International Prix Galien for Best Biotechnology  
Product – its seventh Prix Galien, following six individual 
country awards. 

The efficacy and safety profile of SPINRAZA are evi-
denced by our long-term data and mounting real-world 
evidence. This includes the unprecedented efficacy data 
in pre-symptomatic infants as demonstrated by the new 
interim results from the NURTURE clinical study evaluat-
ing efficacy and safety that we announced in October. 

Our 2018 revenues also grew as a result of the 
continued expansion of our biosimilar business. Our 
biosimilars revenues increased 44% over the prior 
year. This growth was primarily driven by the success 
of BENEPALI (an etanercept biosimilar referencing 
ENBREL), as well as the continued growth of FLIXABI 
(an infliximab biosimilar referencing REMICADE) and the 
October launch of IMRALDI (an adalimumab biosimilar 
referencing HUMIRA) in several European markets.  
We believe biosimilar products benefit patients and 

JUNE

 – Acquired exclusive option for TMS-
007 for acute ischemic stroke 

JULY 

 – Acquired Phase 1a BIIB110 (ActRIIA/B 

ligand trap) and pre-clinical ALG-802 for 
neuromuscular indications

 – Expanded strategic collaboration with Ionis 

to develop novel ASO drug candidates 

 – Launched Aby/Cleo app to support 

individuals with MS

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06

HIGHLIGHTS & CONTENTS

CEO LETTER

STRATEGY

CULTURE & ENGAGEMENT

PRODUCTS & PIPELINE

EXECUTIVE COMMITTEE

health systems globally with the goal of creating room in 
healthcare budgets for innovative therapies. Based on 
our internal estimates, BENEPALI has created savings of 
up to €800 million annually across Europe. 

R are strategically important as we work with payers and 
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The launch of SPINRAZA and the growth of our biosimilar 
business have led to meaningful revenue growth outside 
of the U.S. and the expansion of our global footprint. 
At the end of 2018 ex-U.S. product revenues were 37% 
of our product revenues, up from 32% of our product 
revenues in 2017. 

Overall, our business and cash generation remained 
strong and continued to provide us with flexibility to allo-
cate capital. In 2018 we spent a total of approximately 
$1.8 billion to develop and expand our pipeline as we 
signed six business development deals and increased 
our ownership in Samsung Bioepis Co., Ltd. 
(Samsung Bioepis), our joint venture with 
Samsung BioLogics Co. Ltd. (Samsung 
BioLogics). We also made share 
repurchases totaling approximately 
$4.4 billion. We plan to continue 
evaluating new opportunities for 
business development as we aim to 
create long-term stockholder value 
and in March 2019 we announced a 
new program for the repurchase of up 
to $5 billion of our common stock.

Our goal is to deliver 
innovative therapies for 
patients and invest in  
the areas of highest return 
to deliver long-term value  
to our stockholders.

late-stage studies, including the PASSPORT study for 
progressive supranuclear palsy (PSP) and the AFFINITY 
study for MS.

We believe our expansion into movement disorders 
holds great promise. We initiated the Phase 2 SPARK 
study of BIIB054 (anti-α-synuclein) in Parkinson’s 
disease and completed enrollment of our Phase 2 
PASSPORT study of BIIB092 (gosuranemab) in PSP, a 
disease leading to loss of balance, slowing of movement, 
difficulty moving the eyes and dementia. 

We also made progress in neuromuscular disorders by 
acquiring BIIB110 (ActRIIA/B), a muscle enhancement 
program for investigation in ALS and SMA, and advanc-
ing programs based on the ASO platform. We believe 
ASOs hold great promise to directly target the genetic 
and pathological origin of disease. We initiated a 

Phase 1 study of BIIB078 (IONIS-C9Rx), an 
ASO drug candidate, for ALS targeting 

C9ORF72, which is the most common-
ly inherited cause of ALS. 

In the fourth quarter of 2018 we 
and our collaboration partner 
Ionis Pharmaceuticals, Inc. (Ionis) 
announced results from a positive in-
terim analysis of the ongoing Phase 1 
study of BIIB067 (tofersen) 
in ALS with superoxide dismutase 
1 (SOD1) mutations, a genetic form of 

2018 pipeline progress
2018 was also a productive year with great strides 
in innovation and achievements of clinical milestones. 
We continued to build momentum by adding depth in 
our core growth areas (MS and neuroimmunology, AD 
and dementia, movement disorders and neuromuscular 
disorders) and by advancing our emerging growth areas 
(acute neurology, neurocognitive disorders and pain). 
We expanded and advanced our pipeline by adding six 
new clinical programs and completed enrollment of 

ALS representing approximately 2% of all ALS 
patients. This interim analysis demonstrated both 
proof-of-biology and proof-of-concept with a concordance 
across multiple clinical and biomarker endpoints. Based 
on these results, we initiated and dosed the first patient in 
the anticipated Phase 3 VALOR study, a continuation of 
the Phase 1/2 single- and multiple- ascending dose study.

We remain committed to research in AD and to support-
ing the millions of patients affected by this devastating 

SEPTEMBER 

 – Enrolled first patient in Phase 3 CHARM 

study of BIIB093 (glibenclamide IV) for LHI

OCTOBER

– FDA granted BIIB092 (cid:9)(cid:72)(cid:80)(cid:84)(cid:86)(cid:83)(cid:66)(cid:79)(cid:70)(cid:78)(cid:66)(cid:67)(cid:10) fast

track designation for PSP

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–  Completed enrollment of Phase 2 PASSPORT

 – Launched IMRALDI, an adalimumab biosimilar 

study of BIIB092 (cid:9)(cid:72)(cid:80)(cid:84)(cid:86)(cid:83)(cid:66)(cid:79)(cid:70)(cid:78)(cid:66)(cid:67)(cid:10) for PSP

–  Completed enrollment of Phase 2b AFFINITY

study of opicinumab (anti-LINGO) for MS

referencing HUMIRA, in Europe

 – Presented new interim results from the ongoing 

NURTURE study for SPINRAZA

 
 
 
 
HIGHLIGHTS & CONTENTS

CEO LETTER

STRATEGY

CULTURE & ENGAGEMENT

PRODUCTS & PIPELINE

EXECUTIVE COMMITTEE

07

I would like to thank all of our employees for their con-
tinuing dedication to the business and their unwavering 
commitment to the patients we serve. Pioneering  
means learning along the way and altering the course 
when it becomes evident that there is a better path.  
We are on an exciting journey, fueled by our passion  
for innovation and groundbreaking science. We care 
deeply about making a difference. We work fearlessly. 
We do not give up even when challenged, pursuing 
innovation in all that we do. We are humbled by the 
opportunity to change lives.

Michel Vounatsos
Chief Executive Officer

disease. We will continue to advance our tau-related 
programs, including BIIB092 (gosuranemab) and 
BIIB080 (IONIS-MAPTRx), and plan to refocus on early 
research to understand the biology and genetic origins of 
disease for our remaining AD portfolio.

In our emerging growth areas, we initiated four new 
studies, including the Phase 3 CHARM study for BIIB093 
(glibenclamide IV) in large hemispheric infarction (LHI), 
a severe form of ischemic stroke. We also expanded our 
pipeline with the addition of BIIB104 (AMPA) for cognitive 
impairment associated with schizophrenia (CIAS) and our 
option for TMS-007 for acute ischemic stroke. 

Looking ahead 
Our solid financial performance in 2018 underpinned 
our continued investment in research and development 
and global business expansion. We will continue to be 
financially disciplined and focused on implementing a 
lean and simple operating model. We are committed to 
continuous improvement across all of our operations, 
something that demands a thoughtful approach toward 
all our investments over both the short and long term. 

We aim to continue our momentum in 2019. To deliver 
on our aspirations, we will remain focused on executing 
on our strategic priorities in our core business of MS and 
SMA and developing and expanding our portfolio. Across 
the portfolio, we are prioritizing resources based on  
what we believe are the most promising programs, and 
we plan to continue to significantly invest in research 
and development. 

This is a remarkable time for Biogen and all our stake-
holders. We believe we are well-positioned to address 
the significant unmet medical need in neuroscience, as 
well as in adjacent therapeutic areas where we currently 
have assets or expertise. Our goal is to deliver innovative 
therapies for patients and invest in the areas of highest 
return to deliver long-term value to our stockholders. 

NOVEMBER

DECEMBER

 – Increased ownership in Samsung Bioepis 

 – Alkermes submitted a NDA to the FDA for review 

joint venture to approximately 49.9%

of BIIB098 (diroximel fumarate) for RMS

 – SPINRAZA awarded as Best Biotechnology 

Product by International Prix Galien

 – Initiated Phase 3b NOVA study evaluating 
the efficacy of extended interval dosing for 
(cid:53)(cid:58)(cid:52)(cid:34)(cid:35)(cid:51)(cid:42) (cid:9)natalizumab(cid:10)

–  Dosed first patient in Phase 2b TALLY study of BIIB104 (AMPA) in CIAS 
–  Announced positive results from Phase 1 study of BIIB067 ((cid:85)(cid:80)(cid:71)(cid:70)(cid:83)(cid:84)(cid:70)(cid:79)) 

 in ALS with SOD1 mutations

–  Entered into agreement to investigate the use of C4 Therapeutics' 

novel protein degradation platform

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08

HIGHLIGHTS & CONTENTS

CEO LETTER

STRATEGY

CULTURE & ENGAGEMENT

PRODUCTS & PIPELINE

EXECUTIVE COMMITTEE

investing for future growth

Y Delivering today and  
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We are focused on neuroscience,  
and our goal is to further expand  
our multi-franchise portfolio. 

Our strategy is rooted in the 
fact that the unmet 
need in neurosci-
ence is vast, and 
we believe that 
no other area of 
medicine holds 
as much promise 
for scientific 
breakthroughs. 
Despite medical 
advances, many 
neurological diseases 
remain largely untreated, 
and there is a significant and 
growing opportunity to make a differ-
ence in the lives of many patients. 

We believe that neurological diseas-
es and the therapeutic strategies 
to treat them are interconnected. 
We have identified a set of scientific 
hypotheses with the potential to 
unlock breakthroughs across our 
disease areas. Knowledge gained from one 
area may resonate across our pipeline. 

Continuing to build a  
multi-franchise portfolio

MS FRANCHISE

YESTERDAY

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CLOCKWISE FROM TOP: Our employees  
are preparing the Astrios EQ cell sorter 
for a single cell sort of neurons to further 
understand the biology of Biogen’s anti-tau 
antibody supporting AD research; post- 
doctoral scientist prepares crystals of 
IRAK4, a CNS target involved in stroke for 
x-ray diffraction analysis; gel electrophoretic 

analysis of recombinant GSK3α constructs.

SMA

MS FRANCHISE

TODAY

BIOSIMILARS

 
 
 
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09

Our strategy is to execute on our core business by max-
imizing our resilience in MS, accelerating our progress 
in SMA and creating new sources of value by developing 
and expanding our pipeline. We are focused on our 
core growth areas of MS and neuroimmunology, AD and 
dementia, movement disorders and neuromuscular 
disorders, and our emerging growth areas of acute neu-
rology, neurocognitive disorder, pain and ophthalmology. 

We are focused on delivering on our strategy today and 
investing in future growth. We must remain financially 
disciplined with the aim of continuous improvement. We 
have reprioritized our capital allocation to support our 
strategy; namely, investing in research and development 
and business development. With our deep and diversi-
fied pipeline, strong execution capabilities and financial 
strength, we believe we can deliver on our strategy.

Our biosimilar business is complementary to our strat-
egy. We believe savings enabled by biosimilars provide 
payers and health systems globally the budgetary 
headroom to fund innovation. 

NEUROCOGNITIVE DISORDERS

PAIN

ALZHEIMER'S DISEASE FRANCHISE

THERAPEUTIC ADJACENCIES

THERAPEUTIC ADJACENCIES

OPHTHALMOLOGY FRANCHISE ¹

OPHTHALMOLOGY FRANCHISE 1 

STROKE

ACUTE NEUROLOGY FRANCHISE

MOVEMENT DISORDER FRANCHISE

MOVEMENT DISORDER FRANCHISE

NEUROMUSCULAR FRANCHISE

NEUROMUSCULAR FRANCHISE

MS FRANCHISE

EARLY 2020s

BIOSIMILARS

MS FRANCHISE

OUR VISION

BIOSIMILARS

1   In March 2019 we entered into an agreement to acquire Nightstar Therapeutics plc, a clinical-stage gene therapy company focused on AAV treatments for 

inherited retinal disorders. The closing of the proposed acquisition of Nightstar Therapeutics plc remains subject to customary closing conditions, including 
the approval by Nightstar Therapeutics stockholders and the issuance of an order by the U.K. Court.

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E Living our elements
R
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Much like the periodic table of elements 
documents the building blocks of the 
universe around us, the Biogen Elements 
give shape to our company’s culture. 

How we work
The Biogen Elements promote a unified approach to our 
individual jobs – strengthening our mission, informing our 
leadership, expanding our impact and fueling our growth.

As we remain focused on discovering, developing 
and delivering innovative therapies, we remain 
customer focused. We keep patients, 
payers and physicians front and 
center in our daily work and collab-
orate to solve critical scientific and 
business challenges. In doing so, we 
foster an inclusive community, both 
internally and externally. We work in 
partnership to break down siloes and 
encourage diverse perspectives and 
backgrounds at all levels.

A pioneering spirit permeates our work. 
We challenge the status quo and experiment 
to create new possibilities. We are not afraid to take 
calculated risks and learn from failure. We are resilient 
and agile, adapting in response to internal changes and 
external disruptors and developing solutions quickly to 
take advantage of emerging opportunities.

We hold ourselves accountable for our work and results. 
We honor our commitments, and we never compromise 
our integrity. We sustain an ethical environment of  
trust, honesty and transparency while ensuring appropri-
ate confidentiality. We take responsibility for upholding 
our reputation.

CARE DEEPLY DAY 2018:  
On September 21, employees volunteered 
at the Museum of Life and Science in 
Durham, N.C. (top), and on September 14, 
employees volunteered at West Somerville 
Neighborhood School in Somerville, Mass.

Diversity and inclusion
At Biogen, we believe that a diverse and inclusive work-
place allows us to empower our global workforce, foster 
innovation and achieve better business results. Diversity 
and inclusion lead to better teamwork and collaboration, 
create a climate of respect and trust, and cultivate an 
environment where employees feel empowered to work 
fearlessly. In 2018 we launched our company-wide 
Diversity and Inclusion Strategy, which aims to build 
inclusive talent systems, drive health equity in the disease 
areas we treat and ensure diversity and inclusion are 
owned by everyone within Biogen. 

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11

44 %

 of director-level and above 

positions held by women

48 %

of manager-level and above 
positions held by women

We are honored to be recognized as a company of 
choice for employees. In 2018 Biogen was ranked  
#51 on the Forbes list of World’s Best Employers, as  
well as one of the Best Employers for Women (at #38). 
We scored 100% on the 2018 Disability Equality  
Index, which measures our policies and practices  
related to disability inclusion. Additionally, for the  
fifth consecutive year, we were recognized as a  
Best Place to Work for LGBTQ Equality by the Human 
Rights Campaign, scoring 100% on their 
Corporate Equality Index. 

Caring deeply
Caring about our 
communities is enshrined in 
our Care Deeply Day. Since 
2011 we have set aside 
this annual global day of 
volunteer service to enable 
all employees to reach out 
and have an impact in their 
local communities. In 2018 
over 3,200 employees 
volunteered for 60 projects 
in 30 locations in 
28 countries. 

Aby/Cleo
Our app for MS patients 

We believe that regardless of their treatment 
choices, MS patients should always be informed, 
supported and inspired to aim for better tomorrows. 
We created innovative solutions and services to 
further support patients “beyond the pill” – offering 
products specifically designed for people who live 
with neurological conditions. In 2018 we launched a 
mobile app, called Aby in the U.S. and Cleo outside 
the U.S., created to serve as a digital companion for 
people living with MS and those who support them. 
Individuals are able to access personalized content 
and track their health in a way that can easily be 
shared with their healthcare professionals.

Engagement with the app was achieved through 
a customer-centric approach, involving more than 
150 patients, 60 healthcare professionals and 
6 Patient Advocacy Groups assisting in the app 
design process.

Caroline Craven (pictured below), an MS patient 
and Aby user, explains that understanding MS goes 
beyond the disease and therapies: “It's about some-
body learning to live better, learning new life skills, 
learning to manage their life with their medicine and 
their healthcare professionals as one big picture.”

120,000 +

downloads as of  
December 31, 2018

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Engaging in our 
communities 

We work to have an impact beyond  
our medicines as we strive to improve  
patient health outcomes, solve social  
and environmental challenges, support  
local communities and inspire future 
generations of scientists.

Our support for youth and education
The Biogen Foundation supports access to science 
education for diverse populations and to essential human 
services for children and their families. Since 2002 we’ve 
served more than 50,000 middle and high school stu-
dents in our two Community Labs, giving them a hands-on 
introduction to science. In January the Biogen Foundation 
launched STAR, a $10 million initiative over four years 
to drive the development of local STEM (science, tech-
nology, engineering and math) education ecosystems in 
Cambridge and Somerville, Mass. 

Our contribution to workplace health and safety 
We made significant progress in 2018 integrating 
Human Performance into our Environmental, Health and 
Safety strategy and programs. Human Performance is 
an integrated approach to workplace health, safety and 
quality that recognizes the role of workers in proactive 
risk management and fosters collaboration to help 
resolve issues before and after unwanted events. 
We continued to track the frequency of work-related 
illnesses and injuries that lead to an absence from  
work through the Days Away Case Rate.

Climate

Reduction in operational carbon  
intensity since 2006 ¹

2018

2017

2016

76%

75%

72%

1   Based on 2006 baseline, MTCO2e/$ million in revenues. 
Please note Biogen is using science and context-based 
goals but will continue to leverage intensity-based metrics 
for internal operational excellence and benchmarking.

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ABOVE:  
Cambridge  
Community Lab  
student conducts an 
experiment.

Our commitment to environmental sustainability
We’ve remained carbon neutral since 2014 by driving 
sustainability internally, working with our suppliers and 
investing in renewable resources. We are committed 
to utilizing a science-based approach to reduce our 
environmental footprint, demonstrated by our Science 
Based Targets Initiative-approved 2030 absolute 
greenhouse gas reduction target of 35%. Our practice 
of using science to inform our targets when possible 
is part of our broader commitment to context-based 
sustainability. We also embrace green chemistry and 
continue to explore ways to make our drug discovery and 
development processes safer, more efficient and more 
sustainable while also saving costs.

100%

total renewal electricity
purchased by Biogen

$ 10 million

committed to STEM education by the Biogen 
Foundation through the STAR program

 
 
 
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We prioritize engagement with patients and caregivers to 
understand their needs and identify how we may be able 
to help them achieve better health outcomes. We also 
engage patient advocacy organizations and professional 
associations to solicit their input and insights and edu-
cate them on important topics related to our products 
and pipeline. As part of this commitment, we met with 
leaders of patient advocacy organizations in the U.S. and 
Europe throughout 2018 to develop recommendations 
on how to support early, ongoing patient involvement in 
the drug development process.

We’ve been recognized for our efforts by being named 
the #1 biotechnology company on the 2018 Dow Jones 
Sustainability Index. For more information on our corpo-
rate and social responsibility efforts, visit our website at 
biogen.com/CSR.

Our focus on patients’ needs
We are driven by the unmet needs of people living 
with serious neurological diseases, their families and 
caregivers, as well as society. Our commitment to 
improving lives goes beyond scientific research and 
development. We proactively engage with a variety of 
stakeholders as we work to ensure broad access to our 
treatments. To support our access efforts, we advocated 
for the addition of SMA to the Recommended Uniform 
Screening Panel for newborns in the U.S. and, together 
with Invitae Corporation, offer genetic testing at no 
charge to individuals suspected of having, or have been 
clinically diagnosed with, SMA. 

Support for access to STEM education

Many young people in our local 
communities do not have the 
resources to pursue STEM education 
and careers. The Biogen Foundation 
aims to fill this gap by providing 
teacher development opportunities 
in science, access to hands-on 
science education and college 
readiness and support – especially 
to groups underrepresented in 
science. We aim to inspire the next 
generation of scientists. 

Through our Community Labs, we 
give middle and high school stu-
dents in Massachusetts and North 
Carolina the opportunity to engage in 
hands-on biotechnology experiments 

and interact with scientists and 
other biotech professionals. 
These state-of-the-art laboratory 
classrooms offer free day-long 
interactive science activities and 
rigorous summer programs, as well 
as provide teachers with profes-
sional development opportunities in 
science.

Isaias Hernandez (pictured right), 
graduate of the Biogen Community 
Lab, said: “I liked the amount of in-
dependence we are given … and the 
people around us who are interested 
in science just like me. It has raised 
my curiosity of protein structures …  
it fascinates me.”

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S
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Leading in multiple sclerosis  
and spinal muscular atrophy

Our portfolio of therapies provides 
treatment for diseases that are among 
humanity’s most complex and difficult 
health challenges.

Globally, more than one in three MS patients are treated 
with one of our MS therapies. TECFIDERA celebrated 
five years since its approval by the FDA and is the most 
prescribed oral MS therapy globally. TYSABRI is the 
market leading high efficacy therapy for MS globally. We 
have the market leading interferon portfolio for MS 
globally with AVONEX and PLEGRIDY. 

MS remains at our core. Among the 
oral therapies, we are preparing for 
the potential launch of diroximel 
fumarate (BIIB098), which we plan 
to market under the brand name 
VUMERITY, a name conditionally 
accepted by the FDA, and we expect 
approval in the fourth quarter of 
2019. Within the high efficacy space, 
we have initiated the Phase 3b 

NOVA study to assess the efficacy of six-week extended 
interval dosing of TYSABRI (natalizumab) compared 
with standard interval dosing in patients with RMS, an 
approach that demonstrated the potential to reduce 
the risk of progressive multifocal leukoencephalopathy 
(PML), a serious brain injury. Finally, within our interferon 
portfolio, we are developing an intramuscular formula-
tion of PLEGRIDY  (peginterferon beta-1a) to potentially 
reduce injection site reactions. 

Our commitment to SMA is unwavering, and we are  
humbled by the trust we have built with the SMA 
community. Since its launch, SPINRAZA has 
become the standard of care for SMA, 
with more than 6,600 patients on 
treatment, including our Expanded 
Access Program and clinical trials, as 
of December 31, 2018. The efficacy 
and safety profile of SPINRAZA is 
evidenced by our long-term data and 
real-world experience. SPINRAZA has 
the largest clinical data set in SMA to 
date, with over 300 patients followed 
for up to six years.

SPINRAZA is the  
standard of care in SMA  
with approval in over  
40 countries and formal 
reimbursement in  
30 countries as of the  
end of 2018.

NURTURE study in pre-symptomatic infants

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60

50

40

30

20

10

0

Max CHOP INTEND score = 64ª

In healthy infants, mean (SD) total score was 47.2 (10.0) 
at Month 0 and 56.7 (5.8) at the 3-month study visit¹

Highest individual observed score over the 2-year period 
was 33 in a natural history cohort with 2 SMN2 copies1,b

Highest mean (SE) score over the 2-year period was 19.9 
(1.7) in a natural history cohort with 2 SMN2 copies1,b

Study visit day

1
64
2 SMN2 copies

183

302

365

421

540

659

700

778

3 SMN2 copies

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NURTURE study interim analysis data cutoff date: May 15, 2018. Time points with n≥5 included. 
a   Per version 6 of the study protocol, CHOP INTEND was assessed in participants until they have a 
maximum score of 64. Once a score of 64 is achieved, CHOP INTEND will no longer be assessed. 
b   Infants were aged ≤6 months at enrollment, born between 36 and 42 weeks’ gestation, and had 

genetically confirmed SMA; infants were excluded if they required noninvasive ventilatory support  
for >12 hours/day, had a comorbid illness or were enrolled in a SMA clinical trial. 

1   Kolb SJ, et al.; NeuroNEXT Clinical Trial Network on behalf of the NN101 SMA Biomarker 

Investigators. Ann Neurol. 2017;82(6):883-891.

100% alive
None required 

tracheostomy or permanent 
ventilation

100% able to sit  

without support

88% able to walk either 

with assistance or independently

Data as of May 2018 (n=25)

 
 
 
 
 
 
 
 
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In October at the World Muscle Society we presented 
new interim results from the ongoing NURTURE clinical 
study evaluating efficacy and safety, which demonstrated 
unprecedented efficacy in treating pre-symptomatic 
infants. The study included infants up to six weeks of 
age at time of first dose, who were genetically diagnosed 
with SMA and had not experienced any symptoms by the 
time of first dose. The NURTURE data showed that pre- 
symptomatic treatment resulted in many infants achieving 
milestones consistent with normal development. 

Biosimilars are biologic medicines that are similar to 
currently available biologic therapies known as origi-
nators, with the advantage that they offer cost savings 
and promote sustainable access to therapies. In 2018, 
through our joint venture Samsung Bioepis, we launched 
our third biosimilar, IMRALDI, and we now offer all three 
major anti-TNF biosimilars in Europe. Additionally, in 
November, we increased our ownership in Samsung 
Bioepis to approximately 49.9%. 

We believe our portfolio of commercialized products 
will enable us to further capitalize on global growth 
opportunities.

Our products

Products

2018 Revenues  
($ in millions)

Major Markets

TECFIDERA

$4,274

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.

$1,915

$448

$1,864

$93

France, Germany

AVONEX

PLEGRIDY

TYSABRI

FAMPYRA

SPINRAZA

$1,724

U.S., Brazil, France, Germany, 
Italy, Japan, Turkey

FUMADERM

$22

Germany

Biosimilars

$545

Germany, Norway, Sweden, 
U.K., France 

Other

Total

$1

Not meaningful

$10,887

SPINRAZA
The standard of care in SMA

“Our daughter Sofia was 4½ months 
old when she got her first dose 
of SPINRAZA, and she’s currently 
4½ years old. It has been unbeliev-
able to watch her, from where she 
didn’t move too much, couldn’t stand 
and couldn’t walk to today after 
about 18 doses.

It’s not just gratifying, it’s amazing. 
She doesn’t like things being done 
for her – she likes to do everything 
by herself. Things she was never sup-
posed to do, she’s doing right before 
our eyes. We just look at each other 
and can’t believe what we’re seeing. 

If it wasn’t for 
SPINRAZA, and 
continuing with 
the doses, we 
don’t think she’d 
be here with us 
today. Now we look 
forward to holidays and 
birthdays and big events in the 
future.” (Natalia Wylie)

Disclaimer: The patient story shared 
in this Annual Report depicts an 
individual response to our medicine 
and is not representative of all 
patient responses. 

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E Building depth in our pipeline
N
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P

We are prioritizing our resources on 
what we believe are the most promising 
programs and funded research and 
development expenditures of 
$2.6 billion in 2018. 

I

Our most advanced asset for PSP is BIIB092, a mono-
clonal antibody targeting tau, which is believed to be 

the underlying cause of the disease. Phase 1 data 

demonstrated a greater than 90% reduction in 
CSF tau. If BIIB092 demonstrates clinical 

Pursuing multiple 
modalities 
The emergence of prom-
ising new modalities, includ-
ing ASOs and gene therapy 
via AAV, and advancements 
in biologics and small 
molecules, are opening 
entirely new target spaces 
for potential therapeutic 
interventions. Our pursuit 
of multiple modalities may 
have the ability to slow 
or halt the progression of 
neurological diseases. 

efficacy in PSP, it would represent 
an important inflection point 
for us and our efforts to 
treat movement disorders 
and the broader class of 
tauopathies.

Standing on the brink of 
potential significant break-
throughs, we continue to 
explore new opportunities 
and external innovation. 
In December we entered 
into an agreement with 
C4 Therapeutics to inves-
tigate the use of protein 

degraders for neurological 

diseases in our areas of interest. 

In June we invested $1 billion to enter into a 
10-year exclusive agreement with Ionis, giving us 
access to their innovative antisense platform across 
a broad range of neurological diseases to develop novel 
ASO candidates. This promising platform has the poten-
tial to selectively target the genetic drivers of disease.

The positive interim results from our BIIB067 program 
may have positive implications for additional ASOs in 
our pipeline. For instance, BIIB078, an ASO targeting 
C9ORF72 for ALS, leverages a similar RNA degradation 
mechanism as BIIB067. Furthermore, our BIIB080 
program is an ASO targeting tau that is currently being 
evaluated in a Phase 1 study in patients with mild AD.

Leveraging the interconnectivity in neuroscience 
Our success in MS gives our researchers insight into 
many other disease areas, such as remyelination  
and repair, neuroprotection and axonal health, with 
potential applications in AD, Parkinson’s disease, ALS, 
stroke and pain. And targeting tau, key proteins in the 
central nervous system, holds promise for potentially 
treating not just AD but other tauopathies such as  
PSP, which affects tens of thousands of people globally.

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Building off our momentum from the prior year, 

we continued to focus on business development 
across multiple modalities. In January 2019 we entered 
into an agreement with Skyhawk Therapeutics, Inc. to 
leverage their SkySTAR technology platform with the goal 
of discovering innovative small molecules. 

In March 2019 we entered into an agreement to acquire 
Nightstar Therapeutics plc, a clinical-stage gene therapy 
company focused on AAV treatments for inherited retinal 
disorders. The closing of this proposed acquisition re-
mains subject to customary closing conditions, including 
the approval by Nightstar Therapeutics stockholders and 
the issuance of an order by the U.K. Court.

As we advance our multi-franchise portfolio, we are 
excited by the possibility of pioneering new scientific 
breakthroughs and bringing new treatment options to 
patients in need.

 
 
 
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We added (

) or advanced (

) 15 clinical programs since the beginning of 2017 through April 22, 2019.

Phase 1 Phase 2 Phase 3

Phase 1 Phase 2 Phase 3

CORE GROWTH AREAS
Multiple sclerosis and neuroimmunology

BIIB098 (diroximel fumarate) 1

Opicinumab (anti-LINGO)

BIIB061 (oral remyelination)
Alzheimer’s disease and dementia

Elenbecestat (E2609) 1

BAN2401 (A(cid:417) mAb)1 

BIIB092 (gosuranemab)

BIIB076 (anti-tau mAb) 

BIIB080 (IONIS-MAPTRx) 2
Movement disorders

BIIB092 (gosuranemab) – Progressive Supranuclear Palsy 

BIIB054 (anti-α-synuclein mAb) – Parkinson’s Disease
Neuromuscular disorders

BIIB067 (tofersen) 1, 3 – Amyotrophic Lateral Sclerosis 

BIIB078 (IONIS-C9Rx) 2 – Amyotrophic Lateral Sclerosis 

BIIB110 (ActRIIA/B ligand trap) – Spinal Muscular Atrophy 

EMERGING GROWTH AREAS
Acute neurology

BIIB093 (glibenclamide IV) – Large Hemispheric Infarction

TMS-007 2 – Acute Ischemic Stroke

Natalizumab – Epilepsy
Neurocognitive disorders

BIIB104 (AMPA) – Cognitive Impairment Associated with Schizophrenia
Pain

BIIB074 (vixotrigine) – Trigeminal Neuralgia 4

BIIB074 (vixotrigine) – Small Fiber Neuropathy

BIIB095 (Nav. 1.7) – Neuropathic Pain

THERAPEUTIC ADJACENCIES

Phase 1 Phase 2 Phase 3

Dapirolizumab pegol (anti-CD40L)1 – Systemic Lupus Erythematosus 

BIIB059 (anti-BDCA2) – Systemic Lupus Erythematosus  

BG00011 (STX-100) – Idiopathic Pulmonary Fibrosis

1  Collaboration program.
2  Option agreement.
(cid:20)(cid:1)(cid:1)(cid:35)(cid:74)(cid:80)(cid:72)(cid:70)(cid:79)(cid:1)(cid:74)(cid:84)(cid:1)(cid:68)(cid:80)(cid:77)(cid:77)(cid:66)(cid:67)(cid:80)(cid:83)(cid:66)(cid:85)(cid:74)(cid:79)(cid:72)(cid:1)(cid:88)(cid:74)(cid:85)(cid:73)(cid:1)(cid:83)(cid:70)(cid:72)(cid:86)(cid:77)(cid:66)(cid:85)(cid:80)(cid:83)(cid:84)(cid:1)(cid:85)(cid:80)(cid:1)(cid:71)(cid:86)(cid:83)(cid:85)(cid:73)(cid:70)(cid:83)(cid:1)(cid:69)(cid:70)(cid:71)(cid:74)(cid:79)(cid:70)(cid:1)(cid:85)(cid:73)(cid:70)(cid:1)(cid:84)(cid:68)(cid:80)(cid:81)(cid:70)(cid:1)(cid:80)(cid:71)(cid:1)(cid:85)(cid:73)(cid:70)(cid:1)(cid:68)(cid:77)(cid:74)(cid:79)(cid:74)(cid:68)(cid:66)(cid:77)(cid:1)(cid:69)(cid:66)(cid:85)(cid:66)(cid:1)(cid:81)(cid:66)(cid:68)(cid:76)(cid:66)(cid:72)(cid:70)(cid:1)(cid:83)(cid:70)(cid:82)(cid:86)(cid:74)(cid:83)(cid:70)(cid:69)(cid:1)(cid:85)(cid:80)(cid:1)(cid:84)(cid:86)(cid:81)(cid:81)(cid:80)(cid:83)(cid:85)(cid:1)(cid:85)(cid:73)(cid:70)(cid:1)(cid:83)(cid:70)(cid:72)(cid:74)(cid:84)(cid:85)(cid:83)(cid:66)(cid:85)(cid:74)(cid:80)(cid:79)(cid:1)(cid:80)(cid:71)(cid:1)(cid:35)(cid:42)(cid:42)(cid:35)(cid:17)(cid:23)(cid:24)(cid:15)
(cid:21)  I n December 2018 Biogen received feedback from the FDA on its proposed Phase 3 development plan for BIIB074 (vixotrigine) in trigeminal neuralgia (TGN).

(cid:1)(cid:35)(cid:74)(cid:80)(cid:72)(cid:70)(cid:79)(cid:1)(cid:74)(cid:84)(cid:1)(cid:79)(cid:80)(cid:88)(cid:1)(cid:81)(cid:77)(cid:66)(cid:79)(cid:79)(cid:74)(cid:79)(cid:72)(cid:1)(cid:85)(cid:80)(cid:1)(cid:74)(cid:79)(cid:74)(cid:85)(cid:74)(cid:66)(cid:85)(cid:70)(cid:1)(cid:66)(cid:1)(cid:49)(cid:73)(cid:66)(cid:84)(cid:70)(cid:1)(cid:20)(cid:1)(cid:81)(cid:83)(cid:80)(cid:72)(cid:83)(cid:66)(cid:78)(cid:1)(cid:71)(cid:80)(cid:83)(cid:1)(cid:85)(cid:73)(cid:70)(cid:1)(cid:69)(cid:70)(cid:87)(cid:70)(cid:77)(cid:80)(cid:81)(cid:78)(cid:70)(cid:79)(cid:85)(cid:1)(cid:80)(cid:71)(cid:1)(cid:87)(cid:74)(cid:89)(cid:80)(cid:85)(cid:83)(cid:74)(cid:72)(cid:74)(cid:79)(cid:70)(cid:1)(cid:74)(cid:79)(cid:1)(cid:53)(cid:40)(cid:47)(cid:1)(cid:67)(cid:90)(cid:1)(cid:85)(cid:73)(cid:70)(cid:1)(cid:70)(cid:79)(cid:69)(cid:1)(cid:80)(cid:71)(cid:1)2(cid:17)(cid:18)(cid:26)(cid:15) 

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18

HIGHLIGHTS & CONTENTS

CEO LETTER

STRATEGY

CULTURE & ENGAGEMENT

PRODUCTS & PIPELINE

EXECUTIVE COMMITTEE

Our management team

(LEFT TO RIGHT)

Chirfi Guindo
Executive Vice President, 
Global Product Strategy and 
Commercialization 

Paul F. McKenzie, Ph.D.
Executive Vice President, 
Pharmaceutical Operations  
and Technology

Daniel Karp
Executive Vice President,  
Corporate Development

Michel Vounatsos
Chief Executive Officer

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

Jeffrey D. Capello
Executive Vice President  
and Chief Financial Officer

Ginger Gregory, Ph.D. 
Executive Vice President and  
Chief Human Resources Officer

Susan H. Alexander
Executive Vice President,  
Chief Legal Officer and Secretary

Michael D. Ehlers, M.D., Ph.D.
Executive Vice President,  
Research and Development

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19

GAAP to Non-GAAP Reconciliation

Diluted EPS and net income attributable to Biogen Inc.

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

GAAP Diluted EPS

Adjustments to net income attributable to Biogen Inc. 

Non–GAAP Diluted EPS

GAAP Net Income Attributable to Biogen Inc.

Amortization of acquired intangible assets A, B

TECFIDERA litigation settlement charge A

Acquired in-process research and development

Research and development C

Gain (loss) on fair value remeasurement of contingent considerationD

Premium paid on purchase of Ionis common stock J

(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 G

Hemophilia business separation costs

Gain on deconsolidation of variable interest entities

Donation to Biogen Foundation

Stock option expense and other

Income tax effect related to reconciling items

Elimination of deferred tax asset H

Tax reform I

Non–GAAP Net Income Attributable to Biogen Inc.

Free Cash Flow Reconciliation

2018

$21.58

4.62

$26.20

$4,431

747

–

113

10

(12)

162

(128)

44

11

12

–

–

–

–

–

2017 ¹

$11.92

9.89

$21.81

$2,539

815

–

120

–

63

–

–

132

18

1

–

19

–

–

–

2016

2015

2014

$16.93

$15.34

$12.37

3.29

$20.22

$3,703

374

455

–

–

15

–

–

–

–

33

55

18

(4)

–

–

1.67

$17.01

$3,547

365

–

–

–

31

–

–

–

–

93

–

–

–

–

–

1.46

$13.83

$2,935

473

–

–

–

(39)

–

–

–

–

–

–

–

–

35

12

(147)

11

125

$5,378

(236)

–

1,174

$4,645

(225)

(104)

(135)

–

–

–

–

–

–

$4,423

$3,932

$3,281

Net Cash Flows Provided by Operating Activities 2

$6,188

$4,551

$4,522

$3,716

$2,942

Purchases of property, plant and equipment (Capital Expenditures)

Contingent consideration related to Fumapharm AG acquisition

Free Cash Flow

(771)

(1,500)

$3,917

(867)

(1,200)

$2,484

(616)

(1,200)

$2,706

(643)

(850)

(288)

(375)

$2,223

$2,279

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, 2015 and 2014 pursuant to the adoption of ASU No. 2016-09, Compensation - Stock Compensation 

(Topic 718): Improvements to Employee Share-Based Payment Accounting.

Notes to GAAP to Non-GAAP Reconciliation

A   In January 2017 we entered into a settlement and license 
agreement among Biogen Swiss Manufacturing GmbH, 
Biogen International Holding Ltd., Forward Pharma A/S 
(Forward Pharma) and certain related parties, which was 
effective 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 million was recognized as an intangible asset in the 
first quarter of 2017.

 We have two intellectual property disputes with Forward 
Pharma, one in the U.S. and one in the European Union, 
concerning intellectual property related to TECFIDERA.

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20

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 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 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 evaluat-
ed the recoverability of the U.S. asset based upon these 
most recent developments and recorded a $177 million 
impairment charge in the fourth quarter of 2018 to reduce 
the remaining net book value of the U.S. asset to zero.

 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 the remaining net book value of the rest of 
world intangible asset in our consolidated statements of 
income utilizing an economic consumption model.

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

 Amortization of acquired intangible assets for 2017 also 
includes a $31 million pre-tax impairment charge related to 
our acquired and in-licensed rights and patents intangible 
asset associated with ZINBRYTA after the initiation of 
an European Medicines Agency 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.

B   Amortization of acquired intangible assets for 2018 
includes the impact of impairment charges totaling  
$189 million related to certain in-process research  
and development (IPR&D) assets associated with our 
vixotrigine (BIIB074) program.

 During the third quarter of 2018 we completed a Phase 2b 
study of vixotrigine for the treatment of painful lumbosacral 
radiculopathy (PLSR). The study did not meet its primary or 
secondary efficacy endpoints; therefore, we discontinued 
development of vixotrigine for the treatment of PLSR and 
we recognized an impairment charge of approximately 
$60 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 treatment of trigeminal neuralgia (TGN) 
as we awaited the outcome of ongoing interactions with 

the FDA(cid:1)regarding the design of the Phase 3 studies, a more 
detailed review of the data from the Phase 2b study of 
vixotrigine for the treatment of PLSR and insights from the 
Phase 2 study of vixotrigine for the treatment of small fiber 
neuropathy. We reassessed the fair value of our vixotrigine 
program for the treatment of TGN using reduced expected 
lifetime revenues, higher expected clinical development 
costs and a lower cumulative probability of success and, as 
a result of that assessment, we recognized an impairment 
charge of $129 million during the third quarter of 2018 to 
reduce the fair value of the IPR&D intangible asset 
associated with our vixotrigine program for the treatment of 
TGN to $42 million.

C  GAAP research and development expense for 2018 

includes a $10 million contingent consideration payment 
accrued in relation to the acquisition of an asset.

D  During the third quarter of 2018 we adjusted the fair value 
of our contingent consideration obligations related to our 
vixotrigine program for the treatment of TGN to reflect the 
lower cumulative probabilities of success, which resulted in 
a gain of $90 million.

 In late December 2018 we received feedback from the FDA 
regarding the design of the Phase 3 studies of vixotrigine 
for the treatment of TGN. Following this feedback, we are 
now planning to initiate the Phase 3 studies for our vixo-
trigine program for the treatment of TGN and, as a result, 
we adjusted the fair value of our contingent consideration 
obligations related to our vixotrigine program for the 
treatment of TGN to reflect the increased probabilities of 
success and recognized a loss of $81 million in the fourth 
quarter of 2018.

E   In October 2017 we amended the terms of our collabora-

tion and license agreement with Neurimmune SubOne AG 
(Neurimmune). Under the amended agreement, we made 
a $150 million payment to Neurimmune in exchange for 
a 15% reduction in the previously negotiated royalty rates 
payable on products developed under this agreement. In 
May 2018 we made an additional $50 million payment to 
Neurimmune to further reduce the previously negotiated 
royalty rates payable on products developed under this 
agreement by an additional 5%.

 Net distribution to noncontrolling interest for 2018  
reflects the $50 million payment made to Neurimmune, 
net of Neurimmune’s tax, in May 2018.

 Net distribution to noncontrolling interest for 2017  
reflects the $150 million payment made to Neurimmune, 
net of Neurimmune’s tax, in October 2017.

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

 Restructuring charges for 2016 include charges of $18 mil-
lion incurred in connection with our 2016 restructuring 

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

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

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

H  Elimination of deferred tax asset due to Samsung Bioepis 

Co., Ltd. qualifying as a corporate joint venture for 
accounting purposes.

I    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 compen-
sation. The 2017 Tax Act also transitions international 
taxation from a worldwide system to a modified territorial 
system and includes base erosion prevention measures 
on non-U.S. earnings, which has the effect of subjecting 
certain earnings of our foreign subsidiaries to U.S. taxation 
as global intangible low-taxed income (GILTI). 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.

 During the fourth quarter of 2017 we recognized within 
our provision for income taxes a $1.2 billion provisional 
estimate pursuant to the U.S. Securities and Exchange 
Commission Staff Accounting Bulletin No. 118. Our 
provisional estimate included an amount of $990 million 
associated with a one-time mandatory deemed repatriation 
tax on accumulated foreign subsidiaries(cid:8) previously untaxed 
foreign earnings (the Transition Toll Tax) and 
$184 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.

 Tax reform amounts for 2018 reflect the effect of a net 
reduction of $35 million to our 2017 preliminary Transition 
Toll Tax estimate, an expense of $13 million for the remea-
surement of our deferred tax balances and an $11 million 
expense to reflect other aspects of the 2017 Tax Act.

 Tax reform amounts for 2018 also reflect the effect of an 
expense of $136 million related to the establishment of 
GILTI deferred taxes.

 The final determination of the Transition Toll Tax and 
remeasurement of our deferred assets and liabilities was 
completed in the fourth quarter of 2018.

J   In June 2018 we closed a new ten-year exclusive agree-
ment with Ionis Pharmaceuticals, Inc. (Ionis) to develop 
novel antisense oligonucleotide drug candidates for a 
broad range of neurological diseases for a total payment of 
$1 billion consisting of an upfront payment of $375 million 
and the purchase of approximately 11.5 million shares of 
Ionis' common stock at a cost of $625 million.

 The 11.5 million shares of Ionis' common stock were 
purchased at a premium to their fair value at the transac-
tion 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 agreement in April 2018 and the effect of certain hold-
ing period restrictions. We recorded an asset of $463 mil-
lion 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 million
to research and development expense in our consolidated
statements of income during the second quarter of 2018
reflecting the premium paid for the common stock.

  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) restructuring, 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 attrib-
utable to Biogen Inc., GA(cid:34)P 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.

21

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22

HIGHLIGHTS & CONTENTS

CEO LETTER

STRATEGY

CULTURE & ENGAGEMENT

PRODUCTS & PIPELINE

EXECUTIVE COMMITTEE

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 strategy and plans; potential of 
our commercial business and pipeline programs; capital 
allocation and investment strategy; clinical trials and data 
readouts and presentations; regulatory filings and the 
timing thereof; risks and uncertainties associated with 
drug development and commercialization; the potential 
benefits, safety and efficacy of our products and investiga-
tional therapies; the clinical development program for our 
investigational therapies; anticipated benefits and potential 
of investments, collaborations and business development 
activities; the potential benefits that may be achieved 
through our proposed acquisition of Nightstar Therapeutics; 
and the anticipated timing of our proposed acquisition of 
Nightstar Therapeutics. 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. Drug 
development and commercialization involve a high degree of 
risk, and only a small number of research and development 
programs result in commercialization of a product. Results 
in early stage clinical trials may not be indicative of full 
results or results from later stage or larger scale clinical 
trials and do not ensure regulatory approval. You should not 
place undue reliance on these statements or the scientific 
data presented.

These statements involve risks and uncertainties that could 
cause actual results to differ materially from those reflected 
in such statements, including: our dependence on sales 
from our 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 addi-
tional 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 growth and strategic 
initiatives; risks relating to technology failures or breaches; 
the risk that positive results in a clinical trial may not be 
replicated in subsequent or confirmatory trials or success 
in early stage clinical trials may not be predictive of results 
in later stage or large scale clinical trials or trials in other 
potential indications; risks associated with clinical trials, 
including our ability to adequately manage clinical activities, 
unexpected concerns that may arise from additional data or 
analysis obtained during clinical trials, regulatory authorities 

may require additional information or further studies or may 
fail to approve or may delay approval of our drug candidates; 
the occurrence of adverse safety events, restrictions on use 
with our products or product liability claims; our dependence 
on collaborators and other third parties for the development, 
regulatory approval and commercialization of products and 
other aspects of our business, which are outside of our 
control; risks associated with current and potential future 
healthcare reforms; failure to comply with legal and regulato-
ry requirements; the risks of doing business internationally, 
including currency exchange rate fluctuations; risks relating 
to management and key personnel changes, including 
attracting and retaining key personnel; risks relating to 
investment in our manufacturing capacity; problems with our 
manufacturing processes; risks related to commercialization 
of biosimilars; 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 indebtedness; environmental risks; risks relating 
to the sale and distribution 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; risks relating 
to the spin-off of our hemophilia business, including 
exposure to claims and liabilities; risks that our proposed 
acquisition of Nightstar Therapeutics will not be completed 
in a timely manner or at all; the possibility that certain 
closing conditions to our proposed acquisition of Nightstar 
Therapeutics will not be satisfied; uncertainty as to whether 
the anticipated benefits of our proposed acquisition of 
Nightstar Therapeutics can be achieved; our ability to 
successfully integrate Nightstar Therapeutics’ operations 
and employees; and the other risks and uncertainties that 
are described in the Risk Factors section of our most recent 
annual or quarterly report and in other reports we have filed 
with the Securities and Exchange Commission.

These statements are based on our current beliefs and 
expectations and speak only as of April 22, 2019. We do not 
undertake any obligation to publicly update any forward-look-
ing statements, except as required by law.

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

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HIGHLIGHTS & CONTENTS

CEO STATEMENT

STRATEGY

CULTURE & ENGAGEMENT

PRODUCTS & PIPELINE

EXECUTIVE COMMITEE

23

2018  
FORM  
10-K

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, 2018

or

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

Commission file number: 0-19311

BIOGEN INC.

(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction of incorporation or organization)

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

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

Title of Each Class
Common Stock, $0.0005 par value

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

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

Act.    Yes 

        No 

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

Act.    Yes 

        No 

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

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

submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the 
        No 
registrant was required to submit such files):    Yes 

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained 

herein, and will not be contained, to the best of the registrant’s knowledge, in definitive proxy or information statements 
incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.    

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, 

or a smaller reporting company, 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 $58,267,511,287.

As of February 1, 2019, the registrant had 196,708,784 shares of common stock, $0.0005 par value, outstanding.

Portions of the definitive proxy statement for our 2019 Annual Meeting of Stockholders are incorporated by reference 

DOCUMENTS INCORPORATED BY REFERENCE

into Part III of this report.

 
BIOGEN INC.
ANNUAL REPORT ON FORM 10-K
For the Year Ended December 31, 2018
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

34

47

47

48

48

49

51

54

91

93

93

93

94

95

95

95

95

95

96
96

100

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 or acquisition agreements; tax positions and contingencies; collectability of 
receivables; pre-approval inventory; cost of sales; research and development costs; compensation and other 
selling, general and administrative expenses; amortization of intangible assets; foreign currency exchange risk; 
estimated fair value of assets and liabilities; and impairment assessments;

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

products;

• 

the 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 other products approved under alternative regulatory 
pathways;

•  our plans and investments in our core and emerging growth areas, as well as implementation of our 2017 

corporate strategy;

• 

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

•  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 or generic or biosimilar products marketed by others;

• 

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 and plans and timing 

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

• 

• 

• 

• 

• 

• 

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

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.) intent to 
voluntarily depart from the European Union (E.U.);

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

the impact of new laws, regulatory requirements, judicial decisions and accounting standards; and

the anticipated costs and tax treatment of the spin-off of our hemophilia business as well as the timeline for 
selling substantially all remaining hemophilia related inventory.

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

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

NOTE REGARDING COMPANY AND PRODUCT REFERENCES

References in this report to:

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

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

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

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

NOTE REGARDING TRADEMARKS

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

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

Item 1.  

Business

Overview

PART I

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

Our marketed products include TECFIDERA, AVONEX, PLEGRIDY, TYSABRI 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 19, Collaborative and Other 
Relationships, to our consolidated financial statements included in this report.

We support our drug discovery and development efforts through the commitment of significant resources to 

discovery, research and development programs and business development opportunities. 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 are also applying our scientific expertise to solve some of the most challenging and complex diseases, 
including AD, progressive supranuclear palsy (PSP), Parkinson's disease, ALS, stroke, epilepsy, cognitive impairment 
associated with schizophrenia (CIAS) and pain.

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

that expand access to medicines and reduce the cost burden for healthcare systems. We are leveraging our 
manufacturing capabilities and know-how to develop, manufacture and market biosimilar products through Samsung 
Bioepis Co., Ltd. (Samsung Bioepis), our joint venture with Samsung BioLogics Co., Ltd. (Samsung BioLogics). Under 
our commercial agreement, we market and sell BENEPALI, an etanercept biosimilar referencing ENBREL, FLIXABI, an 
infliximab biosimilar referencing REMICADE, and IMRALDI, an adalimumab biosimilar referencing HUMIRA, in the E.U. 
For additional information on our collaboration arrangement with Samsung Bioepis, please read Note 19, 
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 2018. 

For additional information on our acquisitions, collaborative and other relationships discussed below, please 
read Note 2, Acquisitions, Note 19, Collaborative and Other Relationships, Note 20, Investments in Variable Interest 
Entities, and Note 27, Subsequent Events, to our consolidated financial statements included in this report.

Acquisitions, Collaborative and Other Relationships

BIIB100 Acquisition

In January 2018 we acquired BIIB100 (formerly known as KPT-350) from Karyopharm Therapeutics Inc. 
(Karyopharm). BIIB100 is a Phase 1 ready 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 XP01, with the goal of reducing inflammation and neurotoxicity, along with increasing 
neuroprotective responses. 

BIIB104 Acquisition

In April 2018 we acquired BIIB104 (formerly known as PF-04958242) from Pfizer Inc. (Pfizer). BIIB104 is a first-

in-class, Phase 2b ready AMPA receptor potentiator for CIAS, representing our first program in neurocognitive 
disorders. 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.

Neurimmune SubOne AG

In May 2018 we made a $50.0 million payment to Neurimmune SubOne AG (Neurimmune) under the terms of 
our amended collaboration and license agreement with Neurimmune (as amended, the Neurimmune Agreement) to 
reduce the previously negotiated royalty rates payable on products developed under the Neurimmune Agreement, 
including royalties payable on potential commercial sales of aducanumab, our anti-amyloid beta antibody candidate 
for the treatment of AD, by 5%. Our royalty rates payable on products developed under the Neurimmune Agreement, 
including royalties payable on potential commercial sales of aducanumab, will now range from the high single digits 
to sub-teens.

Ionis Pharmaceuticals, Inc.

In June 2018 we closed a 10-year exclusive agreement with Ionis Pharmaceuticals, Inc. (Ionis) to develop novel 

antisense oligonucleotide (ASO) drug candidates for a broad range of neurological diseases (the 2018 Ionis 
Agreement). We have the option to license therapies arising out of the 2018 Ionis Agreement and will be responsible 
for the development and potential commercialization of such therapies.

TMS Co., Ltd. Option Agreement

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 (MOA) associated with breaking down 
blood clots, which is in Phase 2 development in Japan, and backup compounds for the treatment of stroke.

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.

BIIB110 Acquisition

In July 2018 we acquired BIIB110 (formerly known as ALG-801) (Phase 1a) and ALG-802 (preclinical) 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.

BIIB067 Option Exercise

In December 2018 we exercised our option with Ionis and obtained a worldwide, exclusive, royalty-bearing 
license to develop and commercialize BIIB067 (IONIS-SOD1Rx), an investigational treatment for ALS with superoxide 
dismutase 1 (SOD1) mutations. 

C4 Therapeutics

In December 2018 we entered into a collaborative research and license agreement with C4 Therapeutics (C4T) 
to investigate the use of C4T’s novel protein degradation platform to discover and develop potential new treatments 

2

for neurological diseases, such as AD and Parkinson’s disease. We will be responsible for the development and 
potential commercialization of any therapies resulting from this collaboration.

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 will leverage Skyhawk’s SkySTAR technology 
platform with the goal of discovering innovative small molecule treatments for patients with neurological diseases, 
including MS and SMA. We will be responsible for the development and potential commercialization of any therapies 
resulting from this collaboration. 

Other Key Developments

ZINBRYTA Withdrawal

In March 2018 we and AbbVie Inc. (AbbVie) announced the voluntary worldwide withdrawal of ZINBRYTA for 

RMS.

IMRALDI

In October 2018 we began to recognize revenues on sales of IMRALDI, an adalimumab biosimilar referencing 
HUMIRA, to third parties in the E.U. We and Samsung Bioepis previously entered into an agreement with AbbVie for 
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. 

2018 Share Repurchase Program

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). Our 2018 Share Repurchase Program does not have an expiration date. 
All share repurchases under our 2018 Share Repurchase Program will be retired.

3

Product and Pipeline Developments

Core Growth Areas

Multiple Sclerosis and Neuroimmunology

TECFIDERA (dimethyl fumarate)

• 

• 

In April 2018 we presented new real-world data that demonstrated that people with RMS treated with 
TECFIDERA early in the course of their disease may experience better long-term outcomes. These data were 
presented at the 70th annual meeting of the American Academy of Neurology (AAN) in Los Angeles, CA.

In October 2018 we presented clinical and real-world evidence that further support the long-term efficacy 
and well characterized safety of TECFIDERA early within the disease course. These data were presented at 
the 34th Congress of the European Committee for Treatment and Research in MS (ECTRIMS) in Berlin, 
Germany.

TYSABRI (natalizumab)

• 

• 

In April 2018, at the 70th annual meeting of the AAN in Los Angeles, CA, we presented new real-world data 
that demonstrated that people with RMS treated with TYSABRI early in the course of their disease may 
experience better long-term outcomes.

In April 2018 we presented observational data that demonstrated that extended interval dosing with 
TYSABRI is associated with a significant reduction in the risk of progressive multifocal leukoencephalopathy 
(PML), a serious brain injury, compared with standard interval dosing in the TOUCH prescribing program. 
These data were presented at the 70th annual meeting of the AAN in Los Angeles, CA. In November 2018 
we initiated the Phase 3b NOVA study evaluating the efficacy and safety of extended interval dosing (every 
six weeks) for natalizumab compared to standard interval dosing in patients with RMS and enrolled the first 
patient in December 2018.

• 

In October 2018 we presented clinical and real-world evidence that further support the long-term efficacy 
and well characterized safety of TYSABRI early within the disease course. These data were presented at the 
34th Congress of ECTRIMS in Berlin, Germany.

PLEGRIDY (peginterferon beta-1a)

• 

In December 2018 we dosed the first patient in a bioequivalence study to test whether exposure levels of 
PLEGRIDY are maintained with intramuscular administration.

ZINBRYTA (daclizumab)

• 

In March 2018 we and AbbVie announced the voluntary worldwide withdrawal of ZINBRYTA for RMS.

BIIB098 (formerly known as ALKS 8700) (diroximel fumarate; DRF)

• 

• 

In April 2018 MRI and relapse results from the Phase 3 EVOLVE-MS-1 study for diroximel fumarate in 
patients with relapsing remitting MS (RRMS) were presented at the 70th annual meeting of the AAN in Los 
Angeles, CA.

In December 2018 Alkermes Pharma Ireland Limited, a subsidiary of Alkermes plc (Alkermes), submitted a 
New Drug Application (NDA) to the U.S. Food and Drug Administration (FDA) for diroximel fumarate. 
Alkermes is seeking approval of diroximel fumarate under the 505(b)(2) regulatory pathway. If approved, we 
intend to market diroximel fumarate under the brand name VUMERITY. This name has been conditionally 
accepted by the FDA and will be confirmed upon approval.

Opicinumab (anti-LINGO)

• 

In September 2018 we completed enrollment of the Phase 2b AFFINITY study, evaluating opicinumab as an 
add-on therapy in MS patients who are adequately controlled on their anti-inflammatory disease-modifying 
therapy (DMT), versus the DMT alone.

4

Neuromuscular Disorders

SPINRAZA (nusinersen)

• 

• 

In February 2018 the end of study results from CHERISH, the Phase 3 study evaluating SPINRAZA for the 
treatment of individuals with later-onset SMA, were published in The New England Journal of Medicine. 
Results from CHERISH demonstrated meaningful motor function and upper limb improvements in 
individuals with later-onset SMA rarely seen in the natural course of the disease, which is typically a 
continued decline in motor function over time.

In March 2018 we presented new interim Phase 2 results from NURTURE, the ongoing open-label, single-
arm study evaluating the efficacy and safety of SPINRAZA among pre-symptomatic infants with SMA. In 
NURTURE, all infants treated with SPINRAZA were alive, did not require permanent ventilation and showed 
improvement in motor function and motor milestone achievements as of July 5, 2017, compared to the 
disease's natural history. We also presented a case series demonstrating SPINRAZA's effectiveness 
among teens and young adults. These data were presented at the Muscular Dystrophy Association Clinical 
Conference in Arlington, VA.

• 

In April 2018 we presented data from the CS2/CS12 studies that demonstrated that with SPINRAZA 
treatment, older patients were able to walk longer distances while experiencing stable or less fatigue at the 
same time, in contrast to natural history. The study participants have Type 2 or Type 3 SMA and were ages 
12 to 15 years at study enrollment.

We also presented data on part one of the Phase 2 EMBRACE study as well as an interim analysis of the 
SHINE open-label extension study, which examined the longer-term safety and efficacy of SPINRAZA in 
infantile-onset SMA patients.

These data were presented at the 70th annual meeting of the AAN in Los Angeles, CA.

• 

• 

• 

In June 2018 we presented data from our SPINRAZA clinical development program for SMA at the Cure 
SMA 2018 Annual SMA Conference in Dallas, TX. Platform and poster presentations highlighted interim 
analyses from the SHINE and NURTURE studies, which assess SPINRAZA's safety and efficacy among 
those with infantile-onset SMA, and data on the utility of plasma phosphorylated neurofilament heavy chain 
(pNF-H) as a potential biomarker for SMA.

In October 2018 we presented new interim results from NURTURE, an ongoing open-label, single-arm 
efficacy and safety study of SPINRAZA in 25 presymptomatic infants with SMA at the Annual Congress of 
the World Muscle Society held in Mendoza, Argentina. As of May 2018 all NURTURE study participants were 
alive and none required permanent ventilation, in contrast to the natural history of SMA. In addition, 100% 
of study participants achieved the motor milestone of sitting independently, 88% were able to walk with 
assistance and 77% were able to walk independently. All NURTURE study participants were older than 15 
months at the time of the analysis.

In November 2018 we were awarded the 2018 International Prix Galien as Best Biotechnology Product for 
SPINRAZA. The prestigious honor marks the seventh Prix Galien for SPINRAZA, following country 
recognitions in the U.S., Germany, Italy, Belgium-Luxembourg, the Netherlands, and the U.K. The 
International Prix Galien is given every two years by Prix Galien International Committee members in 
recognition of excellence in scientific innovation to improve human health.

BIIB089 - SMA

• 

In May 2018 we submitted an Investigational New Drug Application for BIIB089 in SMA.

• 

In October 2018 we announced that the FDA had placed BIIB089 on a clinical hold.

BIIB078 (IONIS-C9Rx) - ALS

• 

In September 2018 we enrolled the first patient in the Phase 1 study evaluating BIIB078, an ASO drug 
candidate, in adults with C9ORF72-associated ALS.

BIIB067 (IONIS-SOD1Rx) - ALS

• 

In December 2018 we and Ionis announced results from a positive interim analysis of the ongoing Phase 1 
study of BIIB067 in ALS with SOD1 mutations. The interim analysis showed that, over a three month period, 

5

BIIB067 resulted in a statistically significant lowering of SOD1 protein levels in the cerebrospinal fluid and 
a numerical trend towards slowing of clinical decline as measured by the ALS Functional Rating Scale 
Revised, both compared to placebo.

Alzheimer's Disease and Dementia

Aducanumab (A  mAb)

• 

• 

In February 2018 we announced that, following a pre-planned blinded sample size review of the data per 
study protocol and based on variability in the primary endpoint that was greater than study protocol 
assumed, we increased the sample size of ENGAGE and EMERGE, the Phase 3 studies of aducanumab.

In March 2018 we presented data from the long-term extension (LTE) of the Phase 1b PRIME study of 
aducanumab at the Advances in Alzheimer's and Parkinson's Therapies (AAT-AD/PD) Focus Meeting in 
Torino, Italy. The data presentation included the Centiloid scale, a method used to standardize the 
aducanumab Phase 1b PRIME study amyloid-PET (positron emission tomography) results as previously 
measured by the composite Standardized Uptake Value Ratio.

• 

In April 2018 we presented 36-month data and 24-month titration data from the Phase 1b PRIME study of 
aducanumab at the 70th annual meeting of the AAN in Los Angeles, CA.

• 

In July 2018 we completed enrollment of ENGAGE and EMERGE, the Phase 3 studies of aducanumab.

• 

• 

• 

In July 2018 we presented a new analysis from the Phase 1b PRIME study of aducanumab at the 
Alzheimer's Association International Conference (AAIC) 2018 in Chicago, IL. These data included a poster 
presentation on the 24-month analysis of APOE ?4 carriers in the Phase 1b PRIME study and a platform 
presentation on the 24-month clinical dementia rating scale analysis of the Phase 1b PRIME study.

In August 2018 we and our collaboration partner Eisai Co., Ltd. (Eisai) announced results from a recent 
analysis of the ongoing LTE of the Phase 1b PRIME study of aducanumab. The updated analyses include 
data from the placebo-controlled period and LTE for patients treated with aducanumab up to 36 months in 
the titration cohort and up to 48 months in the fixed dose cohorts. The results are generally consistent 
with previous interim analyses, and there were no changes to the risk-benefit profile of aducanumab.

In October 2018 we presented data on the efficacy of aducanumab and the cumulative safety data from the 
LTE of the Phase 1b PRIME study of patients with prodromal and mild Alzheimer's disease. These data 
were presented at the Clinical Trials on Alzheimer's Disease (CTAD) annual meeting in Barcelona, Spain. 
These results are generally consistent with previous interim analyses, and there were no changes to the 
risk-benefit profile of aducanumab.

• 

In November 2018 we initiated a Phase 2 study of aducanumab to assess the clinical relevance of 
asymptomatic amyloid related imaging abnormalities (ARIA). This Phase 2 study was not required by 
regulators and is not necessary for registration.

BAN2401 (A  mAb)

• 

In December 2017 we and our collaboration partner Eisai announced that the Phase 2 study of BAN2401, 
a monoclonal antibody that targets amyloid beta aggregates, an Eisai product candidate for the treatment 
of AD, did not meet the criteria for success based on a Bayesian analysis at 12 months as the primary 
endpoint in an 856-patient Phase 2 clinical study, an endpoint that was designed to enable a potentially 
more rapid entry into Phase 3 development. In July 2018, based upon the final analysis of the data at 18 
months, we and Eisai announced that the topline results from the Phase 2 study demonstrated a 
statistically significant slowing in clinical decline and reduction of amyloid beta accumulated in the brain. 
The study achieved statistical significance on key predefined endpoints evaluating efficacy at 18 months on 
slowing progression in Alzheimer’s Disease Composite Score (ADCOMS) and on reduction of amyloid 
accumulated in the brain as measured using amyloid-PET. In July 2018 Eisai presented this data in an oral 
session at AAIC 2018 in Chicago, IL.

• 

In October 2018 our collaboration partner Eisai presented clinical and biomarker updates from the Phase 2 
study of BAN2401 at the CTAD annual meeting in Barcelona, Spain.

6

Elenbecestat (E2609)

• 

In June 2018 we and our collaboration partner Eisai announced that elenbecestat, the oral BACE (beta 
amyloid cleaving enzyme) inhibitor, demonstrated an acceptable safety and tolerability profile in the Phase 2 
study, and the results demonstrated a statistically significant difference in amyloid-beta levels in the brain 
measured by amyloid-PET. A numerical slowing of decline in functional clinical scales of a potentially 
clinically important difference was also observed, although this effect was not statistically significant. In 
July 2018 the data were featured in an Eisai poster presentation at AAIC 2018 in Chicago, IL.

• 

In October 2018 our collaboration partner Eisai presented safety and efficacy data for elenbecestat from 
the Phase 2 study in mild cognitive impairment-to-moderate AD at the CTAD annual meeting in Barcelona, 
Spain.

BIIB092 (anti-tau mAb)

• 

In May 2018 we initiated a Phase 2 study of BIIB092 for AD.

Movement Disorders

BIIB054 ( -synuclein antibody) - Parkinson's Disease

• 

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

• 

• 

In April 2018 we presented Phase 1 study results for BIIB054 in Parkinson's disease at the 70th annual 
meeting of the AAN in Los Angeles, CA.

In October 2018 we presented an overview of the design of the Phase 2 SPARK study of BIIB054 in 
Parkinson's disease at the International Congress of Parkinson's Disease and Movement Disorders in 
Hong Kong.

BIIB092 (anti-tau mAb) - PSP

• 

• 

In March 2018 we presented data regarding details about the design of the ongoing Phase 2 PASSPORT 
study of BIIB092 for PSP at the AAT-AD/PD Focus Meeting in Torino, Italy.

In April 2018 we presented Phase 1 study results of BIIB092 for PSP as well as details about the design of 
the ongoing Phase 2 PASSPORT study of BIIB092 for PSP at the 70th annual meeting of the AAN in Los 
Angeles, CA.

• 

In September 2018 we completed enrollment of the Phase 2 PASSPORT study of BIIB092 for PSP.

• 

In October 2018 the FDA granted BIIB092 fast track designation for PSP.

• 

In October 2018 we presented safety data from the Phase 1 LTE study of BIIB092 for PSP and baseline 
demographics from the Phase 2 PASSPORT study of BIIB092 for PSP at the International Congress of 
Parkinson's Disease and Movement Disorders in Hong Kong.

Emerging Growth Areas

Acute Neurology

BIIB093 (glibenclamide IV) - Large Hemispheric Infarction

• 

In September 2018 we enrolled the first patient in the Phase 3 CHARM study of BIIB093 in large 
hemispheric infarction (LHI), a severe form of ischemic stroke.

Natalizumab ( 4-integrin inhibitor) - Epilepsy

• 

In March 2018 we dosed the first patient in the Phase 2 OPUS study of natalizumab in drug-resistant focal 
epilepsy.

Neurocognitive Disorders

BIIB104 (AMPA) - CIAS

• 

In December 2018 we dosed the first patient in our Phase 2b study of BIIB104 in CIAS.

Pain

7

Vixotrigine (BIIB074) - Small Fiber Neuropathy

• 

In May 2018 we initiated a Phase 2 study of BIIB074 in small fiber neuropathy (SFN).

BIIB095 (Nav 1.7) - Neuropathic Pain

• 

In March 2018 we initiated a Phase 1 study of BIIB095, a Nav 1.7 inhibitor for neuropathic pain.

Biosimilars

Samsung Bioepis - Biogen's Joint Venture with Samsung BioLogics

• 

In June 2018 we and Samsung Bioepis announced pooled analysis results from three separate Phase 3 
studies comparing the efficacy and safety of BENEPALI in reference to etanercept, FLIXABI in reference to 
infliximab and IMRALDI in reference to adalimumab in patients with moderate to severe rheumatoid 
arthritis. The data indicated that the incidence of anti-drug antibodies was comparable between the 
biosimilars and their reference products and that radiographic progression of disease was minimal and 
comparable across all treatment groups. The data were presented at the Annual European Congress of 
Rheumatology (EULAR 2018) in Amsterdam, Netherlands.

IMRALDI (Adalimumab)

• 

In October 2018 we and Samsung Bioepis launched IMRALDI, an adalimumab biosimilar referencing 
HUMIRA, in Europe. 

Genentech Relationship

Anti-CD20 Therapies

OCREVUS (ocrelizumab)

• 

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

RITUXAN (rituximab)

• 

In June 2018 the FDA approved RITUXAN for the treatment of adult patients with moderate to severe 
pemphigus vulgaris. Subsequently, the FDA confirmed orphan-drug exclusivity associated with this approval.

Other

BG00011 (STX-100) - Idiopathic Pulmonary Fibrosis

• 

In September 2018 we dosed the first patient in the Phase 2b study of BG00011 in idiopathic pulmonary 
fibrosis (IPF), a chronic irreversible and ultimately fatal disease characterized by a progressive decline in 
lung function.

Dapirolizumab Pegol (anti-CD40L) - Systemic Lupus Erythematosus

• 

In October 2018 we and our collaboration partner UCB announced top-line results from the Phase 2b study 
evaluating the safety and efficacy of dapirolizumab pegol (DZP), an anti-CD40L pegylated Fab, in adults with 
moderately-to-severely active systemic lupus erythematosus (SLE) despite receiving standard-of-care 
treatment such as corticosteroids, anti-malarials and non-biological immunosuppressants. The primary 
endpoint of the study, which was to demonstrate a dose response at 24 weeks on the British Isles Lupus 
Assessment Group (BILAG)-based Composite Lupus Assessment (BICLA), was not met (p=0.06). 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 and DZP demonstrated an acceptable safety profile.

Discontinued Programs

• 

In February 2018 we announced that the Phase 2b dose-ranging ACTION study investigating natalizumab in 
individuals with acute ischemic stroke (AIS) did not meet its primary endpoint. Based on these results, we 
have discontinued development of natalizumab in AIS. The results of the Phase 2b ACTION study do not 
impact the benefit-risk profile of natalizumab in approved indications, including MS.

• 

In October 2018 we announced that we completed the Phase 2b study of vixotrigine (BIIB074) for the 
treatment of painful lumbosacral radiculopathy (PLSR). The study did not meet its primary or secondary 

8

• 

• 

efficacy endpoints and we have discontinued development of vixotrigine for the treatment of PLSR. The 
safety data were consistent with the safety profile reported in previous studies.

In December 2018 we notified Applied Genetic Technologies Corporation (AGTC) of the termination of our 
collaboration agreement with AGTC. The termination of this collaboration agreement will be effective in 
March 2019. As a result, we will have no further involvement in the development of BIIB087, an 
investigational adeno-associated virus (AAV)-based gene therapy for the treatment of X-linked Retinoschisis 
(XLRS), BIIB088, an investigational AAV-based gene therapy for the treatment of X-linked Retinitis 
Pigmentosa (XLRP), and early stage discovery programs in two ophthalmic diseases and one non-
ophthalmic condition.

In December 2018 we notified the University of Pennsylvania (UPenn) that we will be terminating certain 
programs under our collaboration and alliance with UPenn, including the development of therapeutic 
approaches that target the eye, skeletal muscle and central nervous system and research and validation of 
next generation gene transfer technology using AAV gene delivery vectors and exploring the expanded use 
of genome editing technology as a potential therapeutic platform. The termination of these programs will be 
effective in May 2019. This termination did not impact our collaboration with UPenn for the development of 
BIIB089 for the treatment of SMA.

Marketed Products

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

years ended December 31, 2018, 2017 and 2016.

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

(2)  For 2018, 2017 and 2016 other includes product revenues from FAMPYRA, FUMADERM, BENEPALI, FLIXABI and ZINBRYTA. 
For 2018 other also includes product revenues from IMRALDI, which was launched in Europe in October 2018. For 2017 
9

and 2016 other also includes product revenues from ALPROLIX and ELOCTATE through January 31, 2017. No product 
revenues for ELOCTATE and ALPROLIX were recognized subsequent to February 1, 2017, the effective date of the spin-off of 
our hemophilia business.

(3)  Anti-CD20 therapeutic programs includes 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, 2018, 2017 
and 2016. Product sales for SPINRAZA also accounted for more than 10% of our total revenues for the year ended 
December 31, 2018. For additional financial information about our product and other revenues and geographic areas 
where we operate, please read Note 5, Revenues, and Note 25, 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. 

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.

Walking ability for patients with MS

Acorda Therapeutics,
Inc. (Acorda)

France
Germany

10

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 loss of, or 
defect in, the SMN1 gene, people with SMA do not produce enough survival motor neuron (SMN) protein, which is 
critical for the maintenance of motor neurons. The severity of SMA correlates with the amount of SMN protein. 
People with Type 1 SMA, the most severe life-threatening form, produce very little SMN protein and do not achieve 
the ability to sit without support or live beyond two years without respiratory support. People with Type 2 and Type 3 
SMA produce greater amounts of SMN protein and have less severe, but still life-altering, forms of SMA.

Our SMA product and major markets are as follows: 

Product

Indication

Collaborator

Major Markets

SMA

Ionis

U.S.
Brazil
France
Germany
Italy
Japan
Turkey

Biosimilars

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

originators. Under our agreement with Samsung Bioepis, we manufacture and commercialize three anti-tumor 
necrosis factor (TNF) biosimilars in certain countries in the E.U.: BENEPALI, an etanercept biosimilar referencing 
ENBREL, FLIXABI, an infliximab biosimilar referencing REMICADE, and IMRALDI, an adalimumab biosimilar referencing 
HUMIRA.

Our biosimilar products and major markets are as follows: 

Product

Indication

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

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

Rheumatoid arthritis
Axial spondyloarthritis
Psoriatic arthritis
Psoriasis
Paediatric plaque psoriasis
Hireadenitis suppurativa
Crohn's disease
Paediatric Crohn's disease
Ulcerative colitis
Uveitis

11

Major Markets

Germany
Norway
Sweden
U.K

France
Germany

Germany

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

Other

Product

Indication

Collaborator

Major Markets

Moderate to severe plaque
psoriasis

None

Germany

12

Patient Support and Access 

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 co-promote BENEPALI, FLIXABI and IMRALDI 
with Samsung Bioepis in certain countries in the E.U.

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. 

Distribution Arrangements

We distribute our products in the U.S. principally 

through wholesale distributors of pharmaceutical 

13

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, FLIXABI and IMRALDI in 

certain countries in the E.U.

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, 2018, 2017 and 2016, and on 
a combined basis, accounted for approximately 50%, 
56% and 57% of our gross product revenues for the 
years ended December 31, 2018, 2017 and 2016, 
respectively. For additional information, please read 
Note 5, 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 
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.

14

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

SPINRAZA

U.S.
U.S.
Europe

Europe
Europe

Europe

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
1732548

2377536

7,101,993
7,838,657

8,110,560

8,361,977

8,980,853

9,717,750

9,926,559

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
Sustained-release aminopyridine compositions for
increasing walking speed in patients with MS
Sustained-release aminopyridine compositions for
treating MS
Oligonucleotides containing 2’-O-modified purines
SMA treatment via targeting of SMN2 splice site
inhibitory sequences
SMA treatment via targeting of SMN2 splice site
inhibitory sequences
Compositions and methods for modulation of SMN2
splicing
Compositions and methods for modulation of SMN2
splicing
Compositions and methods for modulation of SMN2
splicing
Compositions and methods for modulation of SMN2
splicing
Compositions and methods for modulation of SMN2
splicing
Compositions and methods for modulation of SMN2
splicing
Compositions and methods for modulation of SMN2
splicing
Compositions and methods for modulation of SMN2
splicing

Patent 
Expiration(1)
2020
2028
2019(2)

2028(3)
2026

2022
2023
2027
2019

2023(4)

2020

2023
2027
2020(5)

2023
2025(6)

2025(7)

2023
2027

2025

2030

2030

2030

2034

2026(8)

2026(9)

2030

2026

15

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

until the dates set forth below:

Territory

PLEGRIDY

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

FAMPYRA
SPINRAZA

Expected Expiration
2018
2024
2026
2024
2021
2023
2029

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

to 2024. 

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

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

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

to 2028.

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

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

to 2026.

(7)  This patent 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 2026.

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

to 2031.

(9)  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 or other proceedings are, have been and may in the future be necessary in some instances to 
determine the validity and scope of certain of our patents, regulatory exclusivities or other proprietary rights, and in 
other instances to determine the validity, scope or non-infringement of certain patent rights claimed by third parties 
to be pertinent to the manufacture, use or sale of our products. We may also face challenges to our patents, 
regulatory exclusivities or other proprietary rights covering our products by manufacturers of generics, biosimilars, 
prodrugs and other products approved under alternative 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 21, Litigation, to our consolidated financial statements included in this report.

16

Competition

Competition in the biopharmaceutical industry is 

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

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

Competition among products approved for sale 

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

The introduction of new products or 
technologies, including the development of new 
processes or technologies by competitors or new 
information about existing products or technologies, 
may result in increased competition for our marketed 
products or pricing pressure on our marketed 
products. It is also possible that the development of 
new or improved treatment options or standards of 
care or cures for the diseases our products treat 
could reduce or eliminate the use of our products or 
may limit the utility and application of ongoing clinical 
trials for our product candidates. We may also face 
increased competitive pressures as a result of 
generic versions, prodrugs of existing therapies, 
biosimilars of existing products, other products 
approved under alternative regulatory pathways or 
other technologies. If a generic, prodrug, biosimilar or 

17

other product approved under alternative regulatory 
pathways of one of our products were approved, it 
could reduce our sales of that product.

Additional information about the competition that 

our marketed products face is set forth below.

Multiple Sclerosis

TECFIDERA, AVONEX, PLEGRIDY and TYSABRI 

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)
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

Genentech
EMD Serono

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

Competition in the MS market is intense. Along 

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

Spinal Muscular Atrophy

SPINRAZA is the only approved treatment for 

SMA. We are aware of other products in development 
that, if successfully developed and approved, may 

compete with SPINRAZA in the SMA market, including 
a potential gene therapy product for the treatment of 
SMA Type 1, which could come to market in the U.S. 
in 2019. 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, FLIXABI and IMRALDI, the three 

biosimilars we currently manufacture and 
commercialize in the E.U. for Samsung Bioepis, 
compete with their reference products, ENBREL, 
REMICADE and HUMIRA, 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 biosimilars, in 
development that, if successfully developed and 
approved, may compete with RITUXAN, RITUXAN 
HYCELA and GAZYVA in the oncology market. In 2018 
the FDA approved a rituximab biosimilar in the U.S. A 
biosimilar of RITUXAN could come to market in the 
U.S. in 2019, which may adversely affect the pre-tax 
profits of our collaboration arrangements with 
Genentech, which would, 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 successfully 
developed and 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. 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.

18

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

MS and Neuroimmunology

Opicinumab (anti-LINGO) - MS

BIIB098 (diroximel fumarate)* - MS

Phase 3

Phase 2

BIIB061 (oral remyelination) - MS

Phase 1

Alzheimer's Disease and Dementia

Core
Growth
Areas

Parkinson's Disease and 
Movement Disorders

Neuromuscular Disorders, 
including SMA and ALS

Aducanumab (A  mAb)* - Alzheimer's

Elenbecestat (E2609)* - Alzheimer's

BAN2401 (A  mAb)* - Alzheimer's

BIIB092 (anti-tau mAb) - Alzheimer's

BIIB076 (anti-tau mAb) - Alzheimer's

BIIB080 (IONIS-MAPTRx)# - Alzheimer's

BIIB092 (anti-tau mAb) - PSP

BIIB067 (IONIS-SOD1Rx)* - ALS

BIIB078 (IONIS-C9Rx)# - ALS

BIIB110 (ActRIIA/B ligand trap) - SMA

Phase 3

Phase 3

Phase 2

Phase 2

Phase 1

Phase 1

Phase 2

Phase 2

Phase 1

Phase 1

Phase 1

BIIB093 (glibenclamide IV) - LHI Stroke

Phase 3

Acute Neurology

TMS-007# - Acute Ischemic Stroke

Emerging
Growth
Areas

Neurocognitive Disorders

BIIB104 (AMPA) - CIAS

Natalizumab - Epilepsy

Pain

BIIB074 (Vixotrigine) - Small Fiber Neuropathy

BIIB074 (Vixotrigine) - Trigeminal Neuralgia

Phase 2

Phase 2

Phase 2

Phase 2

Phase 2

BIIB095 (Nav 1.7) - Neuropathic Pain

Phase 1

Other

BG00011 (STX-100) - IPF@

BIIB059 (anti-BDCA2) - SLE^

Dapirolizumab pegol (anti-CD40L)* - SLE^

Phase 2

Phase 2

Phase 2

* Collaboration programs
# Option agreements
^ Systemic Lupus Erythematosus (SLE)
@ Idiopathic Pulmonary Fibrosis (IPF)

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 19, Collaborative and Other 
Relationships, and Note 20, Investments in Variable Interest Entities, to our consolidated financial statements 
included in this report.

19

Business Relationships

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

Below is a brief description of certain business 

relationships and collaborations that expand our 
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 19, Collaborative and Other 
Relationships, Note 20, Investments in Variable Interest 
Entities, and Note 27, Subsequent Events, to our 
consolidated financial statements included in this 
report.

AbbVie, Inc.

We have a collaboration agreement with AbbVie 

for the development and commercialization of 
ZINBRYTA in MS, which was approved for the 
treatment of RMS in the U.S. in May 2016 and in the 
E.U. in July 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, and we were responsible for all 
manufacturing and research and development 
activities.

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.

Applied Genetic Technologies Corporation

In December 2018 we notified AGTC of the 
termination of our collaboration agreement with AGTC 
to develop gene-based therapies for multiple 
ophthalmic diseases. This collaboration focused on 
the development of BIIB087, an investigational AAV-
based gene therapy for the treatment of XLRS, and 
BIIB088, an investigational AAV-based gene therapy 

20

for the treatment of XLRP. This collaboration also 
provided us with options to early stage discovery 
programs in two ophthalmic diseases and one non-
ophthalmic condition. The termination of this 
collaboration agreement will be effective in March 
2019 and we will have no further involvement in the 
development of any of these programs.

Alkermes

We have an exclusive license and collaboration 

agreement with Alkermes to develop and 
commercialize diroximel fumarate (BIIB098), a novel 
oral fumarate in Phase 3 development for the 
treatment of RMS. Under this agreement, we received 
an exclusive, worldwide license to develop and 
commercialize diroximel fumarate. Alkermes will 
maintain responsibility for regulatory interactions with 
the FDA through the potential approval of the NDA for 
diroximel fumarate.

Bristol-Myers Squibb Company

We have an exclusive license agreement with 

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

C4 Therapeutics

In December 2018 we entered into a 

collaborative research and license agreement with 
C4T to investigate the use of C4T’s novel protein 
degradation platform to discover and develop 
potential new treatments for neurological diseases, 
such as AD and Parkinson’s disease. We will be 
responsible for the development and potential 
commercialization of any therapies resulting from this 
collaboration.

Eisai Co., Ltd.

We have a collaboration agreement with Eisai to 

jointly develop and commercialize BAN2401 and 
elenbecestat, two Eisai product candidates for the 
treatment of AD. Eisai serves as the global 
operational and regulatory lead for BAN2401 and 
elenbecestat and all costs, including research, 
development, sales and marketing expenses, are 
shared equally between us and Eisai. Upon marketing 
approval in major markets, we and Eisai will co-
promote BAN2401 and elenbecestat 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 
will continue to lead the ongoing Phase 3 
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 up to three 
gene targets, and an exclusive, worldwide option and 
collaboration agreement with Ionis under which both 
companies are responsible for the development and 
commercialization of SPINRAZA for the treatment of 
SMA. We also have the 2018 Ionis Agreement, which 
is a 10-year exclusive collaboration agreement with 
Ionis to develop novel ASO drug candidates for a 
broad range of neurological diseases.

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 
treatment of SMA and additional antisense and other 
therapeutics for the treatment of neurological 
diseases.

Neurimmune SubOne AG

We have a collaboration and license agreement 

with Neurimmune for the development and 
commercialization of antibodies for the treatment of 
AD, including aducanumab (as amended, the 
Neurimmune Agreement). Under 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 manufacturing 
and commercializing BENEPALI, an etanercept 
biosimilar referencing ENBREL, FLIXABI, an infliximab 

21

biosimilar referencing REMICADE, and IMRALDI, an 
adalimumab biosimilar referencing HUMIRA. 

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 and 
manufacture clinical and commercial quantities of 
bulk drug substance of Samsung Bioepis' biosimilar 
products.

Skyhawk Therapeutics, Inc.

In January 2019 we entered into a collaboration 
and research and development services arrangement 
with Skyhawk pursuant to which the companies will 
leverage Skyhawk’s SkySTAR technology platform with 
the goal of discovering innovative small molecule 
treatments for patients with neurological diseases, 
including MS and SMA. We will be 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 

granting us the option to acquire TMS-007 and 
backup compounds for the treatment of stroke.

University of Pennsylvania

We have a collaboration and alliance with UPenn 

to advance gene therapy and gene editing 
technologies. 

In December 2018 we notified UPenn that we will 

be terminating certain programs under this 
collaboration, including the development of 
therapeutic approaches that target the eye, skeletal 
muscle and central nervous system and research and 
validation of next generation gene transfer technology 
using AAV gene delivery vectors and exploring the 
expanded use of genome editing technology as a 
potential therapeutic platform. The termination of 
these programs will be effective in May 2019. This 
termination did not impact our collaboration with 
UPenn for the development of BIIB089 for the 
treatment of SMA.

Regulatory

Our current and contemplated activities and the 

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

Regulation of Pharmaceuticals

•  Accelerated Approval: The FDA may grant 

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 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 or 
clinical data. 

The FDA has developed four distinct approaches 

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

22

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

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

•  Breakthrough Therapy: The FDA may grant 

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

•  Priority Review: “Priority review” only applies to 

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

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

POST-MARKETING STUDIES

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

23

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 uses are common 
across medical specialties, and often reflect a 
physician's belief that the off-label use is the best 
treatment for patients. The FDA does not regulate the 
behavior of physicians in their choice of treatments, 
but FDA regulations do impose stringent restrictions 
on manufacturers' communications regarding off-label 
uses. Failure to comply with applicable FDA 
requirements may subject a company to adverse 
publicity, enforcement action by the FDA, corrective 
advertising and the full range of civil and criminal 
penalties available to the government. 

Regulation of Combination Products

Combination products are defined by the FDA to 

include products comprising two or more regulated 
components (e.g., a biologic and a device). Biologics 
and devices each have their own regulatory 
requirements, and combination products may have 
additional requirements. Some of our marketed 
products meet this definition and are regulated under 
this framework and similar regulations outside the 
U.S., and we expect that some of our pipeline product 
candidates may be evaluated for regulatory approval 
under this framework as well. 

Product Approval and Post-Approval Regulation 

Outside the U.S.

We market our products in numerous 
jurisdictions outside the U.S. Most of these 
jurisdictions have product approval and post-approval 
regulatory processes that are similar in principle to 
those in the U.S. In Europe, for example, where a 
substantial part of our ex-U.S. efforts are focused, 
there are several tracks for marketing approval, 
depending on the type of product for which approval is 
sought. Under the centralized procedure, a company 
submits a single application to the European 
Medicines Agency (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 EC. The CHMP 
opinion is not binding, but is typically adopted by the 
EC. A marketing application approved by the EC is 
valid in all member states of the E.U. The centralized 
procedure is required for all biological products, 
orphan medicinal products and new treatments for 
neurodegenerative disorders, and it is available for 
certain other products, including those which 
constitute a significant therapeutic, scientific or 
technical innovation.

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

•  a national procedure, which requires an 

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

•  a decentralized procedure, whereby applicants 

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

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

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

approaches intended to optimize the regulatory 
pathways for therapeutically important drugs, 

24

including the Priority Medicines Evaluation Scheme 
(PRIME), accelerated assessment and conditional 
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 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 
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.

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

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 
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.

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

Good Manufacturing Practices

Regulatory agencies regulate and inspect 
equipment, facilities and processes used in the 
manufacturing and testing of pharmaceutical and 
biologic products prior to approving a product. If, after 
receiving approval from regulatory agencies, a 
company makes a material change in manufacturing 

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

Good Clinical Practices

The FDA, the EMA and other regulatory agencies 
promulgate regulations and standards for designing, 
conducting, monitoring, auditing and reporting the 
results of clinical trials to ensure that the data and 
results are accurate and that the rights and welfare of 
trial participants are adequately protected (commonly 
referred to as current Good Clinical Practices (cGCP)). 
Regulatory agencies enforce cGCP through periodic 
inspections of trial sponsors, principal investigators 
and trial sites, contract research organizations (CROs) 
and institutional review boards. If our studies fail to 
comply with applicable cGCP guidelines, the clinical 
data generated in our clinical trials may be deemed 
unreliable and relevant regulatory agencies may 
require us to perform additional clinical trials before 
approving our marketing applications. Noncompliance 
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 early 2020. 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 

25

in terms of safety and effectiveness from the 
reference product, and only minor differences in 
clinically inactive components are allowable in 
biosimilars products. The approval pathway for 
biosimilars does, however, grant a biologics 
manufacturer a 12-year period of exclusivity from the 
date of approval of its biological product before 
biosimilar competition can be introduced. There is 
uncertainty, however, as the approval framework for 
biosimilars originally was enacted as part of the 
PPACA. 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 
receives the first FDA approval for the indication for 
which it has such designation, the product is entitled 
to orphan exclusivity, i.e., the FDA may not approve 
any other applications to market the same drug for 
the same indication for a period of seven years 
following marketing approval, except in certain very 
limited circumstances, such as if the later product is 
shown to be clinically superior to the orphan product. 
Legislation similar to the U.S. Orphan Drug Act has 
been enacted in other countries to encourage the 
research, development and marketing of medicines to 
treat, prevent or diagnose rare diseases. In the E.U., 
medicinal products that receive an orphan designation 
are entitled to 10 years of market exclusivity following 
approval, protocol assistance and access to the 
centralized procedure for marketing authorization. 
SPINRAZA has been granted orphan drug designation 
in the U.S., E.U. and Japan.

Regulation Pertaining to Pricing and 

Reimbursement

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

•  Medicare: Medicare is a federal program that is 
administered by the federal government. The 
program covers individuals age 65 and over as 

26

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 
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. 

27

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 
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 

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 
for our products and the contract manufacturing 
services we provide to Samsung Bioepis, our joint 
venture that develops, manufactures and markets 
biosimilar products, and other strategic contract 
manufacturing partners. Due to the long lead times 
necessary for the expansion of manufacturing 
capacity, 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 operational by the end of 
2020.

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 

28

Manufacturing Facilities

Third-Party Suppliers and Manufacturers

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

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

Our drug substance manufacturing facilities 

include:

Facility

RTP, NC

Hillerød, Denmark

Drug Substance Manufactured

AVONEX
PLEGRIDY
TYSABRI
Other*

TYSABRI
Biosimilars
Other*

* Other includes products manufactured for contract 

manufacturing partners.

In addition to our drug substance manufacturing 

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

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

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.

We are building a large-scale biologics 

manufacturing facility in Solothurn, Switzerland. We 
expect this facility to be 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.

29

Our Employees

As of December 31, 2018, we had approximately 7,800 employees worldwide.

Our Executive Officers (as of February 6, 2019)

Officer
Michel Vounatsos

Susan H. Alexander
Jeffrey D. Capello
Michael D. Ehlers, M.D., Ph.D.
Ginger Gregory, Ph.D.
Chirfi Guindo

Daniel Karp
Robin C. Kramer
Paul McKenzie, Ph.D.

Current Position
Chief Executive Officer

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

Year
Joined
Biogen
2016

2006
2017
2016
2017
2017

2018
2018
2016

Age
57

62
54
50
51
53

41
53
53

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

61

1998

Michel Vounatsos
Experience
Mr. Vounatsos has served as our Chief Executive Officer since January 2017. Prior to that, from April 2016 to
December 2016, Mr. Vounatsos served as our Executive Vice President and Chief Commercial Officer. Prior to
joining Biogen, Mr. Vounatsos spent 20 years at Merck & Co., Inc. (Merck), a pharmaceutical company, where he
most recently served as President, Primary Care, Customer Business Line. In this role, he led Merck’s global
primary care business unit, a role which encompassed Merck’s cardiology-metabolic, general medicine, women’s
health and biosimilars groups and developed and instituted a strategic framework for enhancing the company’s
relationships with key constituents, including the most significant providers, payors and retailers and the world’s
largest governments. Mr. Vounatsos previously held leadership positions across Europe and in China for Merck.
Prior to that, Mr. Vounatsos held management positions at Ciba-Geigy, a pharmaceutical company.
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, from March 2017 to March 2018, Ms. Alexander served as our Executive Vice President, Chief Legal,
Corporate Services and Secretary, from December 2011 to March 2017, as our Executive Vice President, Chief
Legal Officer and Secretary and from 2006 to December 2011, as our Executive Vice President, General Counsel
and Corporate Secretary. 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.

30

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 (J&J), 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.

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

McKnight Endowment Fund for Neuroscience Board
American Society for Cell Biology

Education

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

31

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 from
2005 to 2012; 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

Chirfi Guindo
Experience
Mr. Guindo has served as our Executive Vice President and Head of Global Marketing, Market Access and
Customer Innovation since November 2017. Prior to joining Biogen, Mr. Guindo has 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.

32

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

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

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

Alfred W. Sandrock, Jr., M.D., Ph.D.
Experience
Dr. Sandrock has served as our Executive Vice President and Chief Medical Officer since October 2017. Prior to
that, Dr. Sandrock served as our Executive Vice President, Chief Medical Officer Neurology and Neurodegeneration
from October 2015 to October 2017, as our Chief Medical Officer and Group Senior Vice President from April 2013
to October 2015 and as our Chief Medical Officer and Senior Vice President of Development Sciences from
February 2012 to April 2013. Prior to that, Dr. Sandrock held several 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 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.

33

Item  1A.  

Risk Factors

We are substantially dependent on revenues from our principal products. 

Our revenues depend upon continued sales of our principal 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 principal products and our financial rights in 
our anti-CD20 therapeutic programs for many years. Further, following the completion of the spin-off of our 
hemophilia business on February 1, 2017, our revenues are further reliant and concentrated on sales of our MS 
products in an increasingly competitive market, revenues from sales of our product for SMA and our financial rights 
in our anti-CD20 therapeutic programs. Any of the following negative developments relating to any of our principal 
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; 

• 

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

• 

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:

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

additional relationships with the associated medical and scientific community; 

• 

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

• 

the effectiveness of our commercial strategy for marketing SPINRAZA;

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

• 

the introduction of other products in development that, if successfully developed and approved, may 
compete with SPINRAZA in the SMA market, including potential gene therapy or oral products.

Sales of our products depend, to a significant extent, on adequate coverage, pricing and reimbursement from third-
party payors, which are subject to increasing and intense pressure from political, social, competitive and other sources. 
Our inability to 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 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 

34

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

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

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

the price of our products. Certain countries set prices by reference to the prices in other countries where our 
products are marketed. Thus, our inability to 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 
that will be afforded to our products and processes in the U.S. and in other important markets remains uncertain 
and is dependent upon the scope of protection decided upon by the patent offices, courts, administrative bodies and 
lawmakers in these countries. We 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, especially a small molecule product, the major portion of revenues for that 
product may be dramatically reduced in a very short period of time. If we cannot prevent others from exploiting our 
inventions, we will not derive the expected benefit from them. Furthermore, our products may be determined to 

35

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

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

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 other products approved under alternative regulatory pathways. Generic versions of drugs, biosimilars, 
prodrugs and other products approved under alternative 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 receive for branded products and the volume of 
branded products that we sell, which will negatively impact our revenues.

36

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 may be 
harmed if we are unable to successfully compete in the MS market. More specifically, our ability to compete, 
maintain and grow our share in the MS market may be adversely affected due to a number of factors, including:

• 

• 

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

the introduction of biosimilars, follow-on products, generic versions of branded MS products, prodrugs or 
products approved under other alternative 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 other alternative 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 or generic or biosimilars of our MS 
products, or to our sales and reputation as a result of label changes or adverse experiences or events that 
may occur with patients treated with our MS products 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.

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

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

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

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

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

business.

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

in multitude and complexity, making them potentially vulnerable to breakdown, malicious intrusion and random 
attack. Likewise, data privacy or security breaches by individuals authorized to access our technology systems or 
others may pose a risk that sensitive data, including intellectual property, trade secrets or personal information 
belonging to us, our patients, customers or other business partners, may be exposed to unauthorized persons or to 
the public. Cyber-attacks are increasing in their frequency, sophistication and intensity, and are becoming 
increasingly difficult to detect. They are often carried out by motivated, well-resourced, skilled and persistent actors, 
including nation states, organized crime groups, “hacktivists” and employees or contractors acting with malicious 

37

intent. Cyber-attacks could include the deployment of harmful malware and key loggers, ransomware, a denial-of-
service attack, a malicious website, the use of social engineering and other means to affect the confidentiality, 
integrity and availability of our technology systems and data. Our key business partners face similar risks and any 
security breach of their systems could adversely affect our security posture. While we continue to build and improve 
our systems and infrastructure, 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 or reputational 
harm to us. In addition, our liability insurance may not be sufficient in type or amount to cover us against claims 
related to security breaches, cyber-attacks and other related breaches.

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 the processes used to manufacture a product 
candidate, our dosing or delivery methods or companion devices. Regulatory authorities may grant marketing 
approval that is more restricted than anticipated. These restrictions may include limiting indications to narrow 
patient populations and the imposition of safety monitoring, educational requirements and risk evaluation and 
mitigation strategies. The occurrence of any of these events could result in significant costs and expenses, have an 
adverse effect on our business, financial condition and results of operations, and cause our stock price to decline or 
experience periods of volatility.

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

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

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

Conducting clinical trials is a complex, time-consuming and expensive process. Our ability to complete clinical 
trials in a timely fashion depends 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 
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 or generic or biosimilar products marketed by others 

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. 

38

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 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. 

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

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

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

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

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 or other third parties, and 
the underlying agreement with our collaborators or other third parties may fail to provide us with significant 
protection or may fail to be effectively enforced if the collaborators or third parties fail to perform; 

• 

• 

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

third-party relationships and collaborations often require the parties to cooperate, and failure to do so 
effectively could adversely affect product sales, or the clinical development or regulatory approvals of 
products under joint control, 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 or other third parties to comply with applicable laws and 

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

•  any improper conduct or actions on the part of our collaborators or other third parties could subject us to 

civil or criminal investigations and monetary and injunctive penalties, and could 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.

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 

39

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

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

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

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

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

There is also significant economic pressure on state budgets that 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.

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

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

effect, including:

40

•  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; 

•  U.S. government shutdowns, similar to the one that began in December 2018, may result in delays to the 
FDA's 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.

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

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

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

• 

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

•  uncertainties regarding the collectability of accounts receivable; 

• 

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

•  difficulties in staffing and managing international operations; 

• 

the imposition of governmental controls; 

• 

less favorable intellectual property or other applicable laws; 

• 

• 

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

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

• 

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

•  compliance with complex import and export control laws;

41

• 

restrictions on direct investments by foreign entities and trade restrictions; 

•  greater political or economic instability; 

•  changes in tax laws; and

• 

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.

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

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 you that we will be able to hire or retain the 
personnel necessary for our operations or that the loss of any such personnel will not have a material impact on our 
financial condition and results of operations.

We are expanding our manufacturing capacity for future clinical and commercial requirements for product 

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

We believe we currently have sufficient large-scale manufacturing capacity to meet our near-term manufacturing 

requirements. However, due to the long lead times necessary for the expansion of manufacturing capacity, we are 
expanding our large molecule production capacity by building a large-scale biologics manufacturing facility in 
Solothurn, Switzerland with no assurance that the additional capacity will be required. In addition, we have made and 
expect to make 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.

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 

42

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 
and numerous other factors.

•  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. If 
Samsung Bioepis or such other third parties fail to perform successfully, we may not realize the anticipated 
benefits of our investment in Samsung Bioepis;

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

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

• 

Intellectual Property and Regulatory Challenges. Biosimilar products may face extensive patent clearances, 
patent infringement litigation, injunctions or regulatory challenges, which could prevent the commercial 

43

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; and

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

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 R&D and 
other intangible assets; 

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

•  changes in the fair value of contingent consideration;

•  bad debt expenses and increased bad debt reserves; 

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

•  milestone payments under license and collaboration agreements; and 

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

Our revenues 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 in the various 
places that we operate. In preparing our financial statements, we estimate the amount of tax that will become 
payable in each of such places. Our effective tax rate, however, may be different than experienced in the past due to 
numerous factors, including changes in the mix of our profitability from country to country, the results of 

44

examinations and audits of our tax filings, adjustments to the value of our uncertain tax positions, changes in 
accounting for income taxes and changes in tax laws, including the Tax Cuts and Jobs Act of 2017 (2017 Tax Act). 
Any of these factors could cause us to experience an effective tax rate significantly different from previous periods or 
our current expectations.

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

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

The 2017 Tax Act 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 to U.S. taxation as global intangible low-
taxed income (GILTI), and includes base erosion prevention measures on non-U.S. earnings. 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 in 
installments 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 and changes to certain estimates and 
amounts related to the earnings and profits of certain subsidiaries. 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. 

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

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

Our 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 
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 most recently our 
2018 Share Repurchase Program, which is a program to repurchase up to $3.5 billion of our common stock that was 

45

authorized by our Board of Directors in August 2018. 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 2018 Share 
Repurchase Program 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 
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 

46

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

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

attempting to acquire us.

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

We may be exposed to claims and liabilities as a result of the spin-off of our hemophilia business.

On February 1, 2017, in connection with the spin-off of our hemophilia business, we distributed all of the then 

outstanding shares of Bioverativ Inc. (Bioverativ) common stock to Biogen shareholders pursuant to a separation 
agreement. In March 2018 Bioverativ was acquired by 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. Completion of the spin-off was conditioned upon, among other 
things, our receipt of a favorable opinion from our tax advisors with respect to the tax-free nature of the transaction. 
The opinion is not binding on the U.S. Internal Revenue Service (IRS) or the courts, and there can be no assurance 
that the IRS or the courts will not challenge the qualification of the spin-off as a tax-free transaction or that any such 
challenge would not prevail. If the spin-off is determined to be taxable, the full financial benefits expected to result 
from the separation may not be achieved and/or Biogen and its shareholders could incur significant tax liabilities, 
which could adversely affect our business, financial condition or results of operations and the value of our stock 
could be adversely impacted.

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

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

Item  1B.  

Unresolved Staff Comments

None.

Item  2.  

Properties

Below is a summary of our owned and leased properties as of December 31, 2018.

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

47

•  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;

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

Denmark

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

Hillerød, Denmark. 

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

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

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

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

•  47,000 square feet of administrative space.

In addition, we lease approximately 26,000 square feet of administrative space in Hillerød, Denmark.

Switzerland

We are building a large-scale biologics manufacturing facility in Solothurn, Switzerland. We expect this facility to 

be 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; Zug, Switzerland; the U.K.; 
Germany; France; Denmark and numerous other countries. Our international lease agreements expire at various 
dates through the year 2028.

Item  3.  

Legal Proceedings

For a discussion of legal matters as of December 31, 2018, please read Note 21, Litigation, to our consolidated 

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

Item  4.  

Mine Safety Disclosures

Not applicable.

48

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 1, 

2019, there were approximately 600 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 under our 2018 Share Repurchase 

Program during the fourth quarter of 2018:

Period
October 2018 ..........
November 2018 .......
December 2018.......
Total......................

Total Number of
Shares Purchased
(#)

Average Price
Paid per Share
($)

762,633 $
1,809,120 $
1,774,138 $
4,345,891 $

309.42
317.55
305.59
311.24

Total Number of
Shares Purchased
as Part of Publicly
Announced Programs
(#)

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

762,633 $
1,809,120 $
1,774,138 $

3,264.0
2,689.5
2,147.4

In August 2018 our Board of Directors authorized our 2018 Share Repurchase Program, which is a program to 

repurchase up to $3.5 billion of our common stock. Our 2018 Share Repurchase program does not have an 
expiration date. All share repurchases under our 2018 Share Repurchase Program will be retired. Under our 2018 
Share Repurchase Program, we repurchased and retired approximately 4.3 million shares of our common stock at a 
cost of approximately $1.4 billion during the year ended December 31, 2018.

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 
2016 Share Repurchase Program were retired. Under our 2016 Share Repurchase Program, we repurchased and 
retired approximately 10.5 million, 3.7 million and 3.3 million shares of common stock at a cost of approximately 
$3.0 billion, $1.0 billion and $1.0 billion during the years ended December 31, 2018, 2017 and 2016, respectively. 

49

Performance Graph

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

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

On February 1, 2017, we completed the spin-off of our hemophilia business, 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 this report.

The performance graph below assumes the investment of $100.00 on December 31, 2013, 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.

2013

2014

2015

2016

2017

2018

Biogen Inc.

Nasdaq Pharmaceutical

S&P 500 Index

Nasdaq Biotechnology

$100.00

$100.00

$100.00

$100.00

$121.42

$121.82

$113.69

$134.40

$109.58

$128.44

$115.26

$150.22

$101.43

$127.04

$129.05

$118.15

$123.54

$151.33

$157.22

$143.74

$116.69

$163.37

$150.33

$131.00

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 or the Securities Exchange Act.

50

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,

2018

2017

2016

2015

2014

(e)

(c) (d) (e) (f)

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

(In millions, except per share amounts)
Results of Operations (1)
Product revenues, net (2) ................................. $ 10,886.8 $10,354.7 $ 9,817.9 $ 9,188.5 $ 8,203.4
Revenues from anti-CD20 therapeutic programs
1,195.4
1,980.2
Other revenues................................................
304.5
585.9
Total revenues...........................................
9,703.3
13,452.9
Total cost and expenses...................................
5,747.7
7,564.3
Gain on sale of rights.......................................
16.8
—
Income from operations ...................................
3,972.4
5,888.6
Other income (expense), net.............................
(25.8)
11.0
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 (3) ....................................
Net income attributable to Biogen Inc................ $

6.8
4,430.7 $ 2,539.1 $ 3,702.8 $ 3,547.0 $ 2,934.8

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)

4,933.0
1,237.3
—
3,695.7

5,128.8
2,458.7
—
2,670.1

5,899.6
1,425.6
—
4,474.0

3,946.6
989.9
15.1
2,941.6

4,767.3
1,161.6
12.5
3,593.2

131.0

(7.1)

43.3

46.2

Diluted Earnings Per Share (4)
Diluted earnings per share attributable to
Biogen Inc....................................................... $
Weighted-average shares used in calculating
diluted earnings per share attributable to
Biogen Inc.......................................................

Our financial condition is summarized as follows:

21.58 $

11.92 $

16.93 $

15.34 $

12.37

205.3

213.0

218.8

231.2

237.2

As of December 31,

2018

(In millions)
Financial Condition (1)
Cash, cash equivalents and marketable
securities........................................................ $
4,913.9 $ 6,746.3 $ 7,724.5 $ 6,188.9 $ 3,316.0
Total assets .................................................... $ 25,288.9 $23,652.6 $22,876.8 $19,504.8 $14,314.7
Notes payable, less current portion (5).............. $
580.3
Total Biogen Inc. shareholders’ equity (4) .......... $ 13,039.6 $12,612.8 $12,140.1 $ 9,372.8 $10,809.0

5,936.5 $ 5,935.0 $ 6,512.7 $ 6,521.5 $

2017

2015

2016

2014

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 position 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:

51

 
 
•  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, 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 the E.U. in the first and third quarters of 2016, respectively, and began to recognize 
revenues on sales of IMRALDI to third parties in the E.U. in the fourth quarter of 2018. 

•  Commercial sales of ALPROLIX commenced in the second quarter of 2014 and commercial sales of ELOCTATE and 
PLEGRIDY commenced in the third quarter of 2014. We stopped recognizing product revenues from ALPROLIX and 
ELOCTATE effective February 1, 2017,upon the completion of the spin-off of our hemophilia business.

(3)  Net income (loss) attributable to noncontrolling interests, net of tax includes the following activity:

•  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 for aducanumab.

For additional information on our collaboration arrangement with Neurimmune, please read Note 20, Investments in 
Variable Interest Entities, to our consolidated financial statements included in this report.

(4)  Total Biogen Inc. shareholders' equity reflects the repurchase of approximately 40.0 million shares of our common stock at 

a cost of approximately $11.7 billion between December 31, 2014 and December 31, 2018:

•  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 and 2016 Share Repurchase Programs, 
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 (2011 Share Repurchase Program). 

•  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.

(5)  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.

(a)  Total cost and expenses for the year ended December 31, 2018, includes a pre-tax charge to research and development 

expense of $486.2 million upon the closing of the 2018 Ionis Agreement. Included in this amount was a charge of $162.1 
million reflecting the premium paid above fair value for the purchase of approximately 11.5 million shares of Ionis' common 
stock upon the closing of the 2018 Ionis Agreement. This charge is partially offset by net gains totaling $100.9 million 
recognized in other income (expense), net for the year ended December 31, 2018, related to these shares. For further 
information on our collaboration arrangements with Ionis, please read Note 19, Collaborative and Other Relationships, to our 
consolidated financial statements included in this report.

(b)  Total cost and expenses for the year ended December 31, 2018, includes the impact of impairment charges totaling 

$189.3 million related to certain in-process research and development (IPR&D) assets associated with our vixotrigine 
(BIIB074) program. 

(c)  Total cost and expenses for the year ended December 31, 2018, includes pre-tax charges to acquired IPR&D totaling 

$112.5 million for upfront payments made to AliveGen, Pfizer and Karyopharm upon the closing of our asset purchase 

52

transactions for BIIB110, BIIB104 and BIIB100, respectively, as the underlying assets had not yet reached technological 
feasibility.

Total cost and expenses for the year ended December 31, 2017, includes a pre-tax charge to acquired IPR&D of $120.0 
million for an upfront payment made to Remedy Pharmaceuticals Inc. (Remedy) upon the closing of our asset purchase 
transaction for BIIB093 in LHI.

(d)  Income tax expense for the year ended December 31, 2017, includes a $1,173.6 million provisional estimate pursuant to 
SEC Staff Accounting Bulletin No. 118. Our provisional estimate included an amount of $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. 

Income tax expense for the year ended December 31, 2018, reflects a net increase to expense of approximately $125.0 
million recognized upon finalization of our provisional 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 on the 2017 Tax Act, please read Note 17, Income Taxes, to our consolidated financial 
statements included in this report.

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

January 2017 settlement and license agreement with Forward Pharma A/S (Forward Pharma).

Total cost and expenses for the years ended December 31, 2018 and 2017, includes $176.8 million and $328.2 million, 
respectively, of impairment charges related to our intangible asset associated with our U.S. license to Forward Pharma’s 
intellectual property, including Forward Pharma's intellectual property related to TECFIDERA. For additional information on 
our settlement and license agreement with Forward Pharma and related intangible assets, please read Note 7, Intangible 
Assets and Goodwill, to our consolidated financial statements included in this report.

(f)  Total cost and expenses for the year ended December 31, 2017, includes pre-tax charge of $300.0 million for an upfront 
payment made to BMS upon entering into our agreement to exclusively license BIIB092 and a pre-tax charge of $60.0 
million for a development milestone that became payable to the former shareholders of iPierian, Inc. (iPierian) upon the 
dosing of the first patient in the Phase 2 study of BIIB092 for PSP.

53

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. 

Executive Summary

Introduction

Biogen is a global biopharmaceutical company 

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

Our marketed products include TECFIDERA, 

AVONEX, PLEGRIDY, TYSABRI 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 19, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

Our revenues depend upon continued sales of 
our principal 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 
principal products and our financial rights in our anti-
CD20 therapeutic programs for many years. 

54

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.

Our innovative drug development and 

commercialization activities are complemented by our 
biosimilar products that expand access to medicines 
and reduce the cost burden for healthcare systems. 
We are leveraging our manufacturing capabilities and 
know-how to develop, manufacture and market 
biosimilar products through Samsung Bioepis, our 
joint venture with Samsung BioLogics. Under our 
commercial agreement, we market and sell BENEPALI, 
an etanercept biosimilar referencing ENBREL, FLIXABI, 
an infliximab biosimilar referencing REMICADE, and 
IMRALDI, an adalimumab biosimilar referencing 
HUMIRA, in the E.U. For additional information on our 
collaboration arrangement with Samsung Bioepis, 
please read Note 19, Collaborative and Other 
Relationships, to our consolidated financial 
statements included in this report.

Hemophilia Spin-Off

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

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

Business Environment

The biopharmaceutical industry and the markets 

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

Sales of our products depend, to a significant 

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 2% of our total product 
revenues in each of 2018 and 2017 were derived 
from U.K. sales.

While we are in the process of implementing 
measures to meet E.U. legal requirements and to 
modify our business operations after the U.K. 
separates from the E.U., 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. We will continue to monitor for 
developments and will assess the resulting potential 
impact on our business and results of operations.

Financial Highlights

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 
the future relationship between the U.K. and the E.U. 
upon exit, which is expected to occur in March 2019.  

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 ultimate resolution of the Brexit negotiations. The 
final outcome of these negotiations 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. 

55

Diluted earnings per share attributable to Biogen 

Inc. were $21.58 for 2018, representing an increase 
of 81.0% over $11.92 in the same period in 2017.

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, 2018, compared to the year ended 
December 31, 2017, reflects the following:

•  Total revenues were $13,452.9 million for 2018, 

representing an increase of 9.6% over 
$12,273.9 million in 2017.

•  Product revenues, net totaled $10,886.8 million 
for 2018, representing an increase of 5.1% over 
$10,354.7 million in 2017. This increase was 
primarily due to higher revenues from SPINRAZA 
and our biosimilar products, partially offset by a 
4.3% net decrease in our MS product revenues, 
primarily resulting from a decrease in our 
Interferon product revenues. Product revenues, 
net, compared to the same period in 2017, 
further reflects the favorable impact of foreign 
currency exchange of $88.7 million. Net losses 
recognized in relation to the settlement of 
certain cash flow hedge instruments under our 
foreign currency hedging program for 2018 and 
2017 were similar.

For 2018 compared to 2017, product revenues, 
net, were also negatively impacted by the 
elimination of worldwide ELOCTATE and 
ALPROLIX revenues resulting from the spin-off of 
our hemophilia business on February 1, 2017, 
as well as a decrease in ZINBRYTA revenues due 
to the voluntary worldwide withdrawal of 
ZINBRYTA, which was announced in the first 
quarter of 2018. Compared to 2017, these 
events negatively impacted revenues by $125.7 
million.

•  Revenues from anti-CD20 therapeutic programs 
totaled $1,980.2 million for 2018, representing 
an increase of 27.0% over $1,559.2 million in 
2017. This increase was due to higher royalty 
revenues on sales of OCREVUS as well as an 
increase on our share of pre-tax profits in the 
U.S. for RITUXAN and GAZYVA.

•  Other revenues totaled $585.9 million for 2018, 
representing an increase of 62.8% over $360.0 
million in 2017. This increase was primarily due 
to higher contract manufacturing revenues.

•  Total cost and expenses totaled $7,564.3 

million for 2018, representing an increase of 
9.2% over $6,928.1 million in 2017. This 
increase was primarily due to a 15.2% increase 
in research and development, a 11.4% increase 

in cost of sales and an 8.9% increase in selling, 
general and administrative expenses. These 
increases were partially offset by the net change 
in (gain) loss recognized on the fair value 
remeasurement of our contingent consideration 
obligations as well as a decrease in amortization 
and impairment of acquired intangible assets.

The increase in research and 
development was primarily due to the 
$482.6 million net charge recognized 
upon the closing of the 2018 Ionis 
Agreement, partially offset by charges 
recognized in the prior year period 
totaling $360.0 million related to our 
exclusive license agreement with BMS 
as well as increased spending related to 
our early and late stage pipeline 
candidates.

The increase in cost of sales was 
primarily due to higher contract 
manufacturing shipments of drug 
product and drug substance production 
provided to our strategic partners, an 
increase in biosimilar sales volumes and 
increased royalties payable to Ionis on 
higher sales of SPINRAZA, partially 
offset by lower sales and costs 
associated with our MS products.

The increase in selling, general and 
administrative expenses was primarily 
due to increases in operational spending 
on sales and marketing activities in 
support of our marketed products, 
primarily related to SPINRAZA as we 
continue to expand into new 
international markets and increased 
costs incurred in support of our 
business development transactions 
completed in the current period.

•  Net income attributable to Biogen Inc. was 

favorably impacted by a decrease in our effective 
tax rate to 24.2% for the year ended December 
31, 2018, from 47.9% for 2017. The reduction 
in tax rate was primarily due to the favorable 
impacts of the 2017 Tax Act on our 2018 tax 
rate and the Transition Toll Tax expense 
recognized on enactment in December 2017.

As described below under Financial Condition, 

Liquidity and Capital Resources:

•  We generated $6,187.7 million of net cash flows 
from operations for 2018, which were primarily 
driven by earnings. 

56

 
 
 
•  Cash, cash equivalents and marketable 

securities totaled approximately $4,913.9 
million as of December 31, 2018.

•  We repurchased and retired approximately 14.8 
million shares of our common stock at a cost of 
approximately $4.4 billion during 2018 under our 
2018 and 2016 Share Repurchase Programs.

Acquisitions, Collaborative and Other Relationships

TMS Co., Ltd.

In June 2018 we entered into an exclusive 
option agreement with TMS granting us the option to 
acquire TMS-007, a plasminogen activator with a 
novel MOA 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.

BIIB100 Acquisition

Samsung Bioepis

In January 2018 we acquired BIIB100 from 

Karyopharm. BIIB100 is a Phase 1 ready 
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 
XP01, with the goal of reducing inflammation and 
neurotoxicity, along with increasing neuroprotective 
responses. In connection with the closing of this 
transaction, we made an upfront payment of $10.0 
million to Karyopharm.

BIIB104 Acquisition

In April 2018 we acquired BIIB104 from Pfizer. 

BIIB104 is a first-in-class, Phase 2b ready AMPA 
receptor potentiator for CIAS, representing our first 
program in neurocognitive disorders. 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. In connection with 
the closing of this transaction, we made an upfront 
payment of $75.0 million to Pfizer.

Neurimmune SubOne AG

In May 2018 we made a $50.0 million payment 
to Neurimmune under the terms of the Neurimmune 
Agreement 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%. 
Our royalty rates payable on products developed under 
the Neurimmune Agreement, including royalties 
payable on potential commercial sales of 
aducanumab, will now range from the high single 
digits to sub-teens.

Ionis Pharmaceuticals, Inc. 

In June 2018 we closed the 2018 Ionis 
Agreement, which is a new 10-year exclusive 
agreement with Ionis to develop novel ASO drug 
candidates for a broad range of neurological 
diseases, and made a total payment of $1.0 billion to 
Ionis. We have the option to license therapies arising 
out of the 2018 Ionis Agreement and will be 
responsible for the development and potential 
commercialization of such therapies.

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. 

BIIB110 Acquisition

In July 2018 we acquired BIIB110 and ALG-802 
from 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. In connection 
with the closing of this transaction, we made an 
upfront payment of $27.5 million to AliveGen.

BIIB067 Option Exercise

In December 2018 we exercised our option with 

Ionis and obtained a worldwide, exclusive, royalty-
bearing license to develop and commercialize 
BIIB067, an investigational treatment for ALS with 
SOD1 mutations. In connection with the option 
exercise, we made an upfront payment of $35.0 
million to Ionis.

C4 Therapeutics

In December 2018 we entered into a 

collaborative research and license agreement with 
C4T to investigate the use of C4T’s novel protein 
degradation platform to discover and develop 
potential new treatments for neurological diseases, 
such as AD and Parkinson’s disease. We will be 
responsible for the development and potential 
commercialization of any therapies resulting from this 
collaboration. In connection with this agreement, we 
made an upfront payment of $45.0 million to C4T. 

Skyhawk Therapeutics, Inc.

In January 2019 we entered into a collaboration 

and research and development services agreement 
with Skyhawk pursuant to which the companies will 
leverage Skyhawk’s SkySTAR technology platform with 
the goal of discovering innovative small molecule 
treatments for patients with neurological diseases, 
including MS and SMA. We will be responsible for the 
development and potential commercialization of any 

57

IMRALDI

In October 2018 we began to recognize revenues 

on sales of IMRALDI, an adalimumab biosimilar 
referencing HUMIRA, to third parties in the E.U. We 
and Samsung Bioepis previously entered into an 
agreement with AbbVie for 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.

2018 Share Repurchase Program

In August 2018 our Board of Directors 
authorized our 2018 Share Repurchase Program, 
which is a program to repurchase up to $3.5 billion of 
our common stock. Our 2018 Share Repurchase 
Program does not have an expiration date. All share 
repurchases under our 2018 Share Repurchase 
Program will be retired. Under our 2018 Share 
Repurchase Program, we repurchased and retired 
approximately 4.3 million shares of our common 
stock at a cost of approximately $1.4 billion during 
the year ended December 31, 2018.

therapies resulting from this collaboration. In 
connection with this agreement, we made an upfront 
payment of $74.0 million to Skyhawk.

For additional information on our acquisitions of 

BIIB100, BIIB104 and BIIB110 and our exclusive 
option agreement with TMS, please read Note 2, 
Acquisitions, to our consolidated financial statements 
included in this report. For additional information on 
our collaboration arrangements with Ionis, Samsung 
Bioepis and C4T, please read Note 19, Collaborative 
and Other Relationships, to our consolidated financial 
statements included in this report. For additional 
information on our collaboration arrangement with 
Skyhawk, please read Note 27, Subsequent Events, to 
our consolidated financial statements included in this 
report.

Other Key Developments

ZINBRYTA Withdrawal

In March 2018 we and AbbVie announced the 

voluntary worldwide withdrawal of ZINBRYTA for RMS.

For additional information on our collaboration 

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

Results of Operations

Revenues

Revenues are summarized as follows:

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

For the Years Ended
December 31,

2018

2017

2016

% Change

2018 
compared to 
2017

2017 
compared to 
2016

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

6,800.5 $
4,086.3
10,886.8

7,017.1 $
3,337.6
10,354.7

7,050.4
2,767.5
9,817.9

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

1,314.5
316.4
Total revenues................................ $ 13,452.9 $ 12,273.9 $ 11,448.8

1,559.2
360.0

1,980.2
585.9

(3.1)%
22.4 %
5.1 %

27.0 %
62.8 %
9.6 %

(0.5)%
20.6 %
5.5 %

18.6 %
13.8 %
7.2 %

58

 
 
Product Revenues

Product revenues are summarized as follows:

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

For the Years Ended
December 31,

2018

2017

2016

% Change

2018 compared 
to 2017

2017 compared 
to 2016

TECFIDERA....................................... $
Interferon*.......................................
TYSABRI ..........................................
FAMPYRA .........................................
ZINBRYTA.........................................
Subtotal: MS product revenues........

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

3,968.1
2,795.2
1,963.8
84.9
7.8
8,819.8

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

6.2 %
(5.3)%
0.5 %
7.9 %
575.6 %
1.8 %

Spinal Muscular Atrophy:

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

1,724.2

883.7

4.6

95.1 %

19,110.9 %

Biosimilars:

BENEPALI.........................................
FLIXABI ............................................
IMRALDI...........................................

Subtotal: Biosimilar product
revenues........................................

Other:

485.2
43.2
16.7

545.1

370.8
9.0
—

379.8

100.6
0.1
—

100.7

30.9 %
380.0 %
**

268.6 %
8,900.0 %
**

43.5 %

277.2 %

FUMADERM......................................

22.3

39.6

45.9

(43.7)%

(13.7)%

Hemophilia:

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

Subtotal: Hemophilia product
revenues........................................

—
—

—

48.4
26.0

74.4

513.2
333.7

846.9

**
**

**

(90.6)%
(92.2)%

(92.2)%

Total product revenues, net ............. $ 10,886.8 $ 10,354.7 $

9,817.9

5.1 %

5.5 %

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

59

 
 
Multiple Sclerosis (MS)

TECFIDERA

moderate volume growth in our international markets 
with price reductions in certain European countries.

Interferon

AVONEX and PLEGRIDY

For 2018 compared to 2017, the decrease in 

U.S. TECFIDERA revenues was primarily due to a 
decrease in unit sales volume of 5% and higher 
discounts and allowances, partially offset by price 
increases. 

For 2017 compared to 2016, the increase in 

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

For 2018 compared to 2017, the increase in rest 

of world TECFIDERA revenues was primarily due to 
increases in unit sales volume of 16% and the 
favorable impact of foreign currency exchange of 
$30.8 million. These increases were partially offset by 
higher discounts and allowances and pricing 
reductions in certain European countries. TECFIDERA 
rest of world revenues for 2018 also include net 
losses recognized in relation to the settlement of 
certain cash flow hedge instruments under our foreign 
currency hedging program totaling $11.8 million, 
compared to net losses recognized of $12.4 million 
for 2017.

For 2017 compared to 2016, the increase in rest 

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

We anticipate continued increase in TECFIDERA 

demand on a global basis in 2019, compared to 
2018, with increasing competition from additional 
treatments for MS. We expect sales volumes in the 
U.S. to stabilize in future periods. We also expect 

For 2018 compared to 2017, the decrease in 

U.S. Interferon revenues was primarily due to a 
decrease in Interferon unit sales volumes of 15%, 
which was primarily attributable to patients 
transitioning to other MS therapies, partially offset by 
price increases. 

For 2017 compared to 2016, the decrease in 

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

For 2018 compared to 2017, the decrease in 

rest of world Interferon revenues was primarily due to 
a decrease in Interferon unit sales volume of 6%, as 
patients transition to other MS therapies in the E.U., 
and pricing reductions in certain European countries. 
These decreases were partially offset by the favorable 
impact of foreign currency exchange of $21.9 million. 
Net losses recognized in relation to the settlement of 
certain cash flow hedge instruments under our foreign 
currency hedging program, and included in Interferon 
rest of world revenues, totaled $8.7 million for both 
2018 and 2017.

For 2017 compared to 2016, the decrease in 

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

We expect that Interferon revenues will continue 
to decline in both the U.S. and international markets 

60

revenues in Italy relating to the pricing agreement with 
the Italian National Medicines Agency (Agenzia 
Italiana de Farmaco or AIFA), as discussed below, and 
pricing reductions in certain European countries. 
These decreases were partially offset by an increase 
in unit sales volumes of 1% and the favorable impact 
of foreign currency exchange of $27.8 million.

TYSABRI rest of world revenues for 2018 also 

include net losses recognized in relation to the 
settlement of certain cash flow hedge instruments 
under our foreign currency hedging program totaling 
$10.5 million, compared to net losses recognized of 
$10.7 million for 2017.

For 2017 compared to 2016, the increase in 

rest of world TYSABRI revenues was primarily due to 
the recognition of approximately $45.0 million of 
previously deferred revenues in Italy relating to the 
pricing agreement with AIFA, as discussed below, and 
a 12% increase in unit sales volume primarily in our 
international partner markets, partially offset by a 
prior year favorable adjustment of approximately 
$20.0 million to previous reserves estimates related 
to a government price reimbursement program 
included in our discounts and allowances.

In the fourth quarter of 2011 Biogen Italia SRL, 

our Italian subsidiary, received notice from AIFA that 
sales of TYSABRI after mid-February 2009 through 
mid-February 2011 exceeded a reimbursement limit 
pursuant to a Price Determination Resolution granted 
by AIFA in December 2006. Since being notified in the 
fourth quarter of 2011 that AIFA believed a 
reimbursement limit was still in effect, we deferred 
revenue on sales of TYSABRI as if the reimbursement 
limit were in effect for each biannual period beginning 
in mid-February 2009. In June 2014 AIFA approved a 
resolution affirming that there is no reimbursement 
limit from and after February 2013. In the first quarter 
of 2017 we reached an agreement with AIFA's Price 
and Reimbursement Committee resolving all of AIFA's 
claims relating to sales of TYSABRI in excess of the 
reimbursement limit for prior periods.

We anticipate a slight decline in TYSABRI 

demand on a global basis in 2019, compared to 
2018, with expected volume declines in the U.S. due 
to increasing competition from additional treatments 
for MS, including OCREVUS, exceeding volume growth 
in our international markets.

in 2019, compared to 2018, as a result of increasing 
competition from our other MS products as well as 
other treatments for MS, including biosimilars.

AVONEX

For 2018, 2017 and 2016 U.S. AVONEX 
revenues totaled $1,420.2 million, $1,593.6 million 
and $1,675.3 million, respectively.

For 2018, 2017 and 2016 rest of world AVONEX 

revenues totaled $495.3 million, $557.9 million and 
$638.2 million, respectively.

PLEGRIDY

For 2018, 2017 and 2016 U.S. PLEGRIDY 
revenues totaled $248.1 million, $295.5 million and 
$305.0 million, respectively.

For 2018, 2017 and 2016 rest of world 
PLEGRIDY revenues totaled $199.4 million, $198.8 
million and $176.7 million, respectively.

TYSABRI

For 2018 compared to 2017, the decrease in 

U.S. TYSABRI revenues was primarily due to a 
decrease in unit sales volume of 9%, partially offset 
by price increases and lower discounts and 
allowances. 

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

For 2018 compared to 2017, the decrease in 

rest of world TYSABRI revenues was primarily due to 
the recognition in the prior year period of 
approximately $45.0 million of previously deferred 

61

ZINBRYTA

Spinal Muscular Atrophy

SPINRAZA

Under our collaboration agreement with AbbVie, 

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

For 2018 compared to 2017, the decrease in 
ZINBRYTA revenues was primarily due to the voluntary 
worldwide withdrawal of ZINBRYTA for RMS, which we 
and AbbVie announced in March 2018.

For 2017 compared to 2016, the increase in 

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

For additional information on our collaboration 

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

We began to recognize revenues on sales of 

SPINRAZA in the U.S. in the fourth quarter of 2016 
and in our rest of world markets beginning in the first 
quarter of 2017.

For 2018 compared to 2017, the increase in 

U.S. SPINRAZA revenues was primarily due to 
increases in unit sales volume of 32%, partially offset 
by higher discounts and allowances.

For 2018 compared to 2017, the increase in rest 

of world SPINRAZA revenues was primarily due to 
increases in unit sales volumes as the product 
continued to be launched in new markets around the 
world, partially offset by the unfavorable impact of 
foreign currency exchange of $10.0 million.

For 2017 compared to 2016, the increase in 

U.S. and rest of world SPINRAZA revenues was 
primarily due to an increase in unit sales volume in 
new and existing markets.

We expect that the rate at which SPINRAZA 
revenues will grow will moderate in 2019, compared 
to 2018, 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.

In addition, we are aware of other products in 

development that, if successfully developed and 
approved, may compete with SPINRAZA in the SMA 
market, including a potential gene therapy product for 
the treatment of SMA Type 1, which could come to 
market in the U.S. in 2019. Future sales of SPINRAZA 
may be adversely affected by the commercialization of 
competing products. 

62

For additional information on our collaboration 

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

Biosimilars

BENEPALI, FLIXABI and IMRALDI

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 as follows:

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

For 2018 compared to 2017, the increase in 

biosimilar revenues was primarily due to an increase 
in BENEPALI unit sales volume of 45% and the launch 
of IMRALDI in the fourth quarter of 2018. These 
increases were partially offset by pricing reductions in 
certain European countries.

For 2017 compared to 2016, the increase in 

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

In 2019 we expect strong revenue growth for our 
biosimilars business, primarily driven by the continued 
launch of IMRALDI.

For additional information on our collaboration 

arrangement with Samsung Bioepis, please read Note 
19, 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, including RITUXAN HYCELA, and 
GAZYVA:

For the Years Ended
December 31,

2018

2016

2017

(In millions)
Product
revenues, net ..... $4,484.3 $4,206.9 $3,941.8
Cost and
expenses ...........
Pre-tax profits in
the U.S. ............. $3,814.7 $3,451.7 $3,197.3
Biogen's share of
pre-tax profits ..... $1,431.9 $1,316.4 $1,249.5

755.2

669.6

744.5

Our share of RITUXAN, including RITUXAN 
HYCELA, annual pre-tax co-promotion profits in the 
U.S. in excess of $50.0 million decreased to 39% 
from 40% in February 2016 when GAZYVA was 
approved by the FDA as a new treatment for follicular 
lymphoma and further decreased to 37.5% in the third 
quarter of 2017 as gross sales of GAZYVA in the U.S. 

63

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

For 2018 compared to 2017, the increase in 
U.S. product revenues, net was primarily due to an 
increase in net sales of RITUXAN, including RITUXAN 
HYCELA, in the U.S. of 6%. This increase reflects 
selling price increases and an increase in unit sales 
volume of 1%, partially offset by higher discounts and 
allowances.

The increase in U.S. product revenues, net over 
2017 also reflects an increase in GAZYVA unit sales 
volume of 22%, partially offset by higher discounts 
and allowances.

For 2017 compared to 2016, the increase in 

U.S. product revenues, net was primarily due to 
selling price increases and an increase in RITUXAN, 
including RITUXAN HYCELA, and GAZYVA unit sales 
volume of 2% and 6%, respectively, partially offset by 
higher discounts and allowances.

For 2018 compared to 2017, the decrease in 
collaboration costs and expenses was primarily due to 
lower Branded Pharmaceutical Drug fee expenses and 
decreases in GAZYVA and RITUXAN research and 
development costs.

For 2017 compared to 2016, the increase in 
collaboration costs and expenses was primarily due to 
higher Branded Pharmaceutical Drug Fee expenses 
and an increase in RITUXAN selling and marketing 
costs, partially offset by a decrease in GAZYVA 
research and development costs.

We are aware of anti-CD20 molecules, including 

biosimilars, in development that if successfully 
developed and approved, may compete with RITUXAN 
in the oncology market. In 2018 the FDA approved a 
rituximab biosimilar in the U.S. A biosimilar of 
RITUXAN could come to market in the U.S. in 2019, 
which may adversely affect the pre-tax profits of our 
collaboration arrangements with Genentech, which 
would, 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 2018 compared to 2017, the increase in 

other revenues from anti-CD20 therapeutic programs 
was primarily due to the launch of OCREVUS in the 
second quarter of 2017 and subsequent sales 
growth. Royalty revenues recognized on sales of 
OCREVUS for the years ended December 31, 2018 
and 2017, totaled $478.3 million and $159.3 million, 
respectively.

For 2017 compared to 2016, other revenues 

from anti-CD20 therapeutic programs increased 
primarily due to the launch of OCREVUS in the second 
quarter of 2017.

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 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.

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

64

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 ............................... $

Revenues from Collaborative and Other 

Relationships

Revenues from collaborative and other 
relationships include revenues from our technical 
development services and manufacturing agreements 
with Samsung Bioepis and royalty revenues on 
biosimilar products from Samsung Bioepis. Revenues 
from collaborative and other relationships also include 
our 50% share of the co-promotion losses on sales of 
ZINBRYTA in the U.S. with AbbVie.

Prior to the spin-off of our hemophilia business, 

other revenues from collaborative and other 
relationships also included revenues earned under 
our manufacturing services agreement with Swedish 
Orphan Biovitrum AB (Sobi) on shipments of ELOCTA 
and ALPROLIX to Sobi and royalties from Sobi on 
sales of ELOCTA and ALPROLIX in their territory, which 
included substantially all of Europe, Russia and 
certain markets in Northern Africa and the Middle 
East. Bioverativ assumed all of our rights and 
obligations under our agreement with Sobi on 
February 1, 2017.

For 2018 compared to 2017, the increase in 

revenues from collaborative and other relationships 
was primarily due to higher revenues earned under 
our manufacturing agreement with Samsung Bioepis.

For 2017 compared to 2016, the decrease in 

other revenues from collaborative and other 
relationships was primarily due to the impact of the 
spin-off of our hemophilia business on February 1, 
2017, partially offset by higher revenues earned 
under our manufacturing agreement with 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 and 
our share of co-promotion losses in the U.S. on the 
sale of ZINBRYTA, please read Note 19, Collaborative 
and Other Relationships, to our consolidated financial 
statements included in this report.

For The Years 
Ended December 31,

2018

2017

2016

% Change

2018
compared to
2017

2017
compared to
2016

87.8 $

498.1
585.9 $

36.5 $

323.5
360.0 $

39.3
277.1
316.4

140.5%
54.0%
62.8%

(7.1)%
16.7 %
13.8 %

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

Other Royalty and Corporate Revenues

We receive royalties from net sales on products 

related to patents that we have out-licensed and we 
record other corporate revenues primarily from 
amounts earned under contract manufacturing 
agreements.

For 2018 compared to 2017, the increase in 
royalty and other corporate revenues was primarily 
due to higher contract manufacturing revenues 
resulting from increased shipments of drug product 
and drug substance production provided to our 
strategic partners, partially offset by a reduction in 
royalty revenues due to the expiration of certain of our 
patents.

As a result of the adoption of the new revenue 

standards as of January 1, 2018, other corporate 
revenue and cost of sales, excluding amortization and 
impairment of acquired intangible assets were $75.8 
million and $42.4 million, respectively, higher in the 
year ended December 31, 2018, compared to what 

65

would have been reported under the previous revenue 
guidance, primarily due to the earlier recognition of 
revenue associated with our contract manufacturing 
agreements. Under the previous revenue guidance, 
these amounts would have been recognized in future 
periods upon shipment. The adoption of the new 
revenue standards did not have a material impact on 
any other balances within our consolidated financial 
statements as of and for the year ended December 
31, 2018.

For 2017 compared to 2016, the increase in 
royalty and other corporate revenues was primarily 
due to an increase in sales of the underlying products 
from which we receive royalties and higher contract 
manufacturing revenues related to the volume of 
shipments of drug substance production provided to 
our strategic partners, including Bioverativ.

Pursuant to the terms of the manufacture and 

supply agreement with Bioverativ entered into in 
connection with the spin-off of our hemophilia 
business, we expect to sell substantially all remaining 
hemophilia related inventory to Bioverativ during the 
first quarter of 2019, with a cost basis totaling 
approximately $180.0 million as of December 31, 
2018. 

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. 

Reserves for discounts, contractual adjustments 

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

For the years ended December 31, 2018, 2017 
and 2016, reserves for discounts and allowances as 
a percentage of gross product revenues were 23.7%, 
22.0% and 21.3%, respectively.

Discounts

Discounts include trade term discounts and 

wholesaler incentives. 

For 2018 compared to 2017, the increase in 
discounts was primarily due to increases in rest of 
world product revenues, due in part to increases in 
SPINRAZA and biosimilar revenues, partially offset by 
the impact resulting from the spin-off of our 
hemophilia business on February 1, 2017.

For 2017 compared to 2016, the decrease in 

discounts was primarily driven by the impact from the 
spin-off of our hemophilia business on February 1, 
2017, partially offset by an increase in rest of world 
product revenues, due in part to an increase in 
biosimilar revenues, as well as an increase in gross 
selling prices.

Contractual Adjustments

Contractual adjustments primarily relate to 
Medicaid and managed care rebates, co-payment 
assistance (copay), VA and PHS discounts, specialty 
pharmacy program fees and other government rebates 
or applicable allowances. 

For 2018 compared to 2017, the increase in 

contractual adjustments was primarily due to higher 
managed care rebates in the U.S. as well as other 
governmental rebates and allowances in the U.S. and 

66

rest of world, due in part to an increase in SPINRAZA 
sales volumes worldwide and an increase in gross 
selling prices in the U.S. These increases were 
partially offset by the impact from the spin-off of our 
hemophilia business on February 1, 2017.

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 2017 compared to 2016, the increase in 

contractual adjustments was primarily due to higher 
managed care rebates and Medicaid and other 
governmental rebates and allowances in the U.S., due 
in part to an increase in gross selling prices and the 
launch of SPINRAZA in the U.S. in the fourth quarter 
of 2016, partially offset by the impact from the spin-
off of our hemophilia business on February 1, 2017.

Returns

Product return reserves are established for 
returns made by wholesalers. In accordance with 
contractual terms, wholesalers are permitted to return 

Cost and Expenses

A summary of total cost and expenses is as follows:

For 2018 compared to 2017, the increase in 
return reserves was primarily due to the voluntary 
worldwide withdrawal of ZINBRYTA for RMS, which we 
and AbbVie announced in March 2018. 

For 2017 compared to 2016, return provisions 

were relatively consistent.

For additional information on our revenue 
reserves, please read Note 5, Revenues, to our 
consolidated financial statements included in this 
report.

For the Years Ended
December 31,

2018

2017

2016

% Change

2018 
compared to 
2017

2017 
compared to 
2016

(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 ............
Acquired in-process research and
development ..........................................
Restructuring charges.............................
(Gain) loss on fair value remeasurement
of contingent consideration.....................
TECFIDERA litigation settlement charge....

1,816.3 $
2,597.2
2,106.3

1,630.0 $
2,253.6
1,933.9

1,478.7
1,973.3
1,946.6

747.3
185.0

112.5
12.0

(12.3)
—

814.7
112.3

120.0
0.9

62.7
—

385.6
10.2

—
33.1

Total cost and expenses ................... $

7,564.3 $

6,928.1 $

11.4 %
15.2 %
8.9 %

(8.3)%
64.7 %

(6.3)%
**

10.2 %
14.2 %
(0.7)%

111.3 %
**

**
(97.3)%

323.6 %
(100.0)%
10.0 %

14.8
454.8
6,297.1

(119.6)%
**
9.2 %

** Percentage not meaningful.

67

 
 
Cost of Sales, Excluding Amortization and 
Impairment of Acquired Intangible Assets (Cost of 
Sales)

reasons totaled $41.9 million, $76.9 million and 
$48.2 million for the years ended December 31, 
2018, 2017 and 2016, respectively. 

Royalty Cost of Sales

For 2018 compared to 2017, the increase in 
royalty cost of sales was primarily due to increased 
royalties payable to Ionis on higher sales of 
SPINRAZA, partially offset by the expiration of certain 
third-party royalties payable on sales of TYSABRI and 
decreases in royalties payable due to lower sales of 
TYSABRI.

For 2017 compared to 2016, the increase in 

royalty cost of sales was primarily driven by the 
recognition of royalties payable to Ionis on sales of 
SPINRAZA and higher royalties on sales of AVONEX 
and PLEGRIDY in the U.S., as described below. These 
increases were partially offset by the elimination of 
royalties payable on sales of hemophilia products 
resulting from the spin-off of our hemophilia business 
on February 1, 2017, and lower royalties on sales of 
TYSABRI resulting from the expiration of certain third-
party royalties.

On June 28, 2016, the USPTO issued to the 

Japanese Foundation for Cancer Research (JFCR) a 
patent related to recombinant interferon-beta protein. 
This patent, U.S. Patent No. 9,376,478, expires in 
June 2033. This patent was issued following an 
interference proceeding between JFCR and us. This 
patent is relevant to AVONEX and PLEGRIDY, and we 
will pay royalties in the mid-single digits in relation to 
this patent during the life of the patent. 

Research and Development

Product Cost of Sales

For 2018 compared to 2017, the increase in 

product cost of sales was primarily due to higher 
contract manufacturing shipments of drug product and 
drug substance production provided to our strategic 
partners and an increase in biosimilar sales volumes. 
These increases were partially offset by lower costs 
associated with our MS products and a decrease in 
inventory amounts written down as a result of excess, 
obsolescence, unmarketability or other reasons. 

For 2017 compared to 2016, the increase in 
product cost of sales was primarily driven by higher 
unit sales volume related to our biosimilar product 
shipments, higher contract manufacturing shipments 
of drug substance production provided to our strategic 
partners, including Bioverativ, and an increase in 
inventory amounts written down as a result of excess, 
obsolescence, unmarketability or other reasons. 
These increases were partially offset by the impact 
from the spin-off of our hemophilia business on 
February 1, 2017, and the accelerated depreciation 
recorded in the second, third and fourth quarters of 
2016 as a result of our decision to cease 
manufacturing in Cambridge, MA. 

Product cost of sales for 2016 reflects the 

recognition of $45.5 million of accelerated 
depreciation as a result of our decision to cease 
manufacturing in Cambridge, MA and vacate our 
small-scale biologics manufacturing facility in 
Cambridge, MA and warehouse space in Somerville, 
MA.

Inventory amounts written down as a result of 

excess, obsolescence, unmarketability or other 

68

information technology and facility-based expenses. 
These costs are considered other research and 
development costs in the table above and are not 
allocated to a specific program or stage.

Research and development expense incurred in 

support of our marketed products includes costs 
associated with product lifecycle management 
activities including, if applicable, costs associated 
with the development of new indications for existing 
products. Late stage programs are programs in Phase 
3 development or in registration stage. Early stage 
programs are programs in Phase 1 or Phase 2 
development. Research and discovery represents 
costs incurred to support our discovery research and 
translational science efforts. Costs are reflected in 
the development stage based upon the program 
status when incurred. Therefore, the same program 
could be reflected in different development stages in 
the same year. For several of our programs, the 
research and development activities are part of our 
collaborative and other relationships. Our costs reflect 
our share of the total costs incurred.

For 2018 compared to 2017, the increase in 
research and development expense was primarily due 
to increases in milestone and upfront expenses, 
costs incurred in connection with our early and late 
stage programs and increased costs incurred in 
connection with research and discovery. These 
increases were partially offset by decreased costs 
incurred with our marketed products.

For 2017 compared to 2016, the increase in 
research and development expense was primarily 
related to milestone and upfront expenses and costs 
incurred in connection with our early stage and late 
stage programs, partially offset by decreased costs 
incurred in connection with our marketed products.

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 2018 

includes:

•  $486.2 million net charge to research and 

development expense upon the closing of the 
2018 Ionis Agreement;

•  $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 BIIB067; and

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, 

69

•  $17.0 million upfront charge recognized upon 
entering into a collaboration and research and 
development services agreement with C4T to 
investigate the use of C4T’s novel protein 
degradation platform to discover and develop 
potential new treatments for neurological 
diseases.

Research and development expense for 2017 

includes:

•  $300.0 million upfront payment made to BMS 

upon entering into our agreement to exclusively 
license BIIB092;

•  $60.0 million developmental milestone 

payment due to the former shareholders of 
iPierian, which became payable upon dosing of 
the first patient in the Phase 2 study of BIIB092 
for PSP;

•  $28.0 million upfront payment made to 

Alkermes upon entering into our agreement to 
exclusively license diroximel fumarate, 
representing our share of diroximel fumarate 
development costs already incurred in 2017;

•  $50.0 million accrual based upon the expected 
continuation of our agreement with Alkermes to 
develop and commercialize diroximel fumarate; 
and

•  $25.0 million upfront payment recognized upon 
entering into a new collaboration agreement 
with Ionis to identify new ASO drug candidates 
for the treatment of SMA.  

Research and development expense for 2016 

includes:

•  $75.0 million license fee paid to Ionis as we 

exercised our option to develop and 
commercialize SPINRAZA from Ionis;

•  $50.0 million milestone payment to Eisai 

related to the initiation of a Phase 3 study for 
elenbecestat; and 

•  $20.0 million upfront payment recognized upon 

entering into a collaboration and alliance 
agreement with UPenn.

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 19, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

Early Stage Programs

For 2018 compared to 2017, the increase in 
spending associated with our early stage programs 
was primarily due to the development of BIIB092 in 
AD and PSP pursuant to our license agreement with 
BMS, the development of BIIB054 in Parkinson's 
disease, the development of BIIB080 (IONIS-MAPTRx) 
in AD, the development of opicinumab in MS and the 
development of BIIB093 in LHI, which we advanced to 
a late stage program in the third quarter of 2018.

For 2017 compared to 2016, the increase in 
spending associated with our early stage programs 
was primarily related to the development of BIIB092 
in AD and PSP pursuant to our license agreement with 
BMS, vixotrigine for the treatment of trigeminal 
neuralgia (TGN) and BIIB076 (anti-tau mAb) in AD. 
These increases were partially offset by a reduction in 
costs resulting from our discontinuance of 
development of amiselimod in the third quarter of 
2016.

Late Stage Programs

For 2018 compared to 2017, the increase in 
spending associated with our late stage programs 
was primarily due to the development of diroximel 
fumarate in MS pursuant to our license and 
collaboration agreement with Alkermes, the 
development of elenbecestat in AD pursuant to our 
collaboration agreement with Eisai and the 
development of BIIB093 in LHI, which we advanced to 
a late stage program in the third quarter of 2018. 
These increases were partially offset by a decrease in 
costs related to aducanumab reflecting Eisai's 15% 
reimbursement of aducanumab development 
expenses beginning April 1, 2018.

Beginning January 1, 2019, Eisai began to 
reimburse us for 45% of aducanumab development 
expense incurred.

For 2017 compared to 2016, the increase in 
spending associated with our late stage programs 
was primarily related to the increased costs 
associated with the development of aducanumab in 
AD and costs incurred associated with the 
development of elenbecestat that was advanced to a 
late stage program in the fourth quarter of 2016. 
These increases were partially offset by advancement 
of SPINRAZA to marketed products following its 
approval in the U.S. in the fourth quarter of 2016.

Marketed Products

For 2018 compared to 2017, the decrease in 

spending associated with our marketed products was 
primarily due to decreases in costs associated with 
our MS related projects. 

70

For 2017 compared to 2016, the decrease in 

Amortization and Impairment of Acquired Intangible 

Assets

spending associated with our marketed products was 
primarily due to a reduction in spending resulting from 
the spin-off of our hemophilia business on February 1, 
2017, and a reduction in spending related to 
TECFIDERA. These decreases were partially offset by 
increased spending related to SPINRAZA following its 
approval in the U.S. in the fourth quarter of 2016. 

Selling, General and Administrative

For 2018 compared to 2017, the increase in 
selling, general and administrative expenses was 
primarily due to increases in operational spending on 
sales and marketing activities in support of our 
marketed products, primarily related to increased 
commercialization costs of SPINRAZA as we continue 
to expand into new international markets and 
increased costs incurred in support of our business 
development activities completed during the current 
period. These increases were partially offset by the 
timing of certain spend, a decrease in operational 
spend on ZINBRYTA subsequent to the voluntary 
worldwide withdrawal of ZINBRYTA for RMS, which we 
and AbbVie announced in March 2018, and a 
reduction in the Branded Pharmaceutical Drug fee 
expense.

For 2017 compared to 2016, the decrease in 

selling, general and administrative expenses was 
primarily due to a reduction in operational spending 
resulting from the spin-off of our hemophilia business 
on February 1, 2017, the execution of targeted cost 
reduction initiatives and a reduction in costs resulting 
from the discontinuance of our TECFIDERA television 
advertising campaign in the second quarter of 2016. 
These decreases were offset by an increase in 
SPINRAZA commercialization costs and an increase in 
corporate giving.

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 and 
TECFIDERA products and other programs acquired 
through business combinations. 

Amortization of acquired intangible assets, 
excluding impairment charges, totaled $381.2 million, 
$455.3 million and $373.4 million for the years 
ended December 31, 2018, 2017 and 2016, 
respectively.

For 2018 compared to 2017, the decrease in 
amortization and impairment of acquired intangible 
assets reflects an overall net decrease in 
amortization and impairment charges related to our 
intangible assets associated with our U.S. and rest of 
world licenses for Forward Pharma's intellectual 
property, including Forward Pharma's intellectual 
property related to TECFIDERA, as discussed below, 
and the impact of higher expected lifetime revenues 
of TYSABRI. These decreases were partially offset by 
the impact of impairment charges related to certain 
IPR&D assets associated with our vixotrigine program 
totaling $189.3 million, also discussed below. 

For 2017 compared to 2016, the increase in 
amortization and impairment of acquired intangible 
assets was primarily due to $444.2 million of 
amortization and impairment charges related to our 
intangible asset associated with our U.S. and rest of 
world licenses for Forward Pharma's intellectual 
property, including Forward Pharma's intellectual 
property related to TECFIDERA. Amortization and 
impairment of acquired intangible asset for 2017 also 
includes a $31.2 million impairment related to our 
acquired and in-licensed rights and patents intangible 
asset associated with ZINBRYTA after the initiation of 
an EMA review (referred to as an Article 20 
Procedure) of ZINBRYTA following the report of a case 

71

of fatal fulminant liver failure, as well as four cases of 
serious liver injury.

For additional information on our collaboration 

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

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 have two intellectual property disputes with 
Forward Pharma, one in the U.S. and one in the E.U., 
concerning intellectual property related to TECFIDERA. 

In March 2017 the U.S. intellectual property 
dispute was decided in our favor. Forward Pharma 
appealed to the U.S. Court of Appeals for the Federal 
Circuit. 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 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.

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 Board of Appeal of the EPO and the appeal 
is pending. 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, 2018, was $71.0 million.

For additional information on these disputes, 

please read Note 21, Litigation, to our consolidated 
financial statements included in this report.

IPR&D related to Business Combinations

IPR&D represents the fair value assigned to 

research and development assets that we acquired 
and had not yet reached technological feasibility at 
the date of acquisition. We review amounts 
capitalized as acquired IPR&D for impairment at least 
annually, as of October 31, and whenever events or 
changes in circumstances indicate to us that the 
carrying value of the assets might not be recoverable.

During the third quarter of 2018 we completed a 

Phase 2b study of vixotrigine for the treatment of 
PLSR. The study did not meet its primary or 
secondary efficacy endpoints; therefore, we 
discontinued development of vixotrigine for the 
treatment of PLSR and 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 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 treatment of PLSR and insights from 
the Phase 2 study of vixotrigine for the treatment of 
SFN. We reassessed the fair value of our vixotrigine 
program for the treatment of TGN using reduced 
expected lifetime revenues, higher expected clinical 
development costs and lower cumulative probabilities 
of success, and, as a result of that assessment, we 
recognized an impairment charge of $129.3 million 
during the third quarter of 2018 to reduce the fair 
value of the IPR&D intangible asset associated with 
our vixotrigine program for the treatment of TGN to 
$41.8 million.

In late December 2018 we received feedback 

from the FDA regarding the design of the Phase 3 
vixotrigine program for the treatment of TGN. Following 
this feedback, we are now planning to initiate the 
Phase 3 vixotrigine program for the treatment of TGN.

We may recognize additional impairment charges 

in the future depending upon our ability to advance 
vixotrigine for the treatment of TGN or other 
indications.

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 
efficacy based on data from clinical trials and 
regulatory feedback, the level of anticipated 
development costs and the probability and timing of 

72

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 and changes in program 
economics and related impact of foreign currency 
exchange rates, and evaluating industry data 
regarding the productivity of clinical research and the 
development process. Changes in our estimates of 
these items may result in a significant change to our 
valuation of our IPR&D assets.

For additional information on the amortization 

and impairment of acquired intangible assets, 
including our TECFIDERA settlement and license 
agreement and our IPR&D intangible asset related to 
our vixotrigine program for the treatment of TGN, 
please read Note 7, Intangible Assets and Goodwill, to 
our consolidated financial statements included in this 
report.

Estimated Future Amortization of Intangible Assets

Annually, during our long-range planning cycle, 

we perform an analysis of anticipated lifetime 
revenues of our TYSABRI, AVONEX, SPINRAZA and 
TECFIDERA products. This analysis is also updated 
whenever events or changes in circumstances would 
significantly affect the anticipated lifetime revenues of 
any of these products. Impairments are recorded in 
the period in which they are incurred.

Our most recent long-range planning cycle was 

completed in the third quarter of 2018. The results of 
our TYSABRI, AVONEX and TECFIDERA analyses were 
impacted by changes in the estimated timing and 
impact of other alternative MS formulations, including 
OCREVUS. The outcome of this most recent analysis 
resulted in a net overall decrease in our expected rate 
of amortization for acquired intangible assets, which 
was primarily related to higher expected lifetime 
revenues of TYSABRI. 

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)
2019 ........................................... $
2020 ...........................................
2021 ...........................................
2022 ...........................................
2023 ...........................................

As of December 31,
2018

270.0

290.0

250.0

250.0

230.0

The amounts in the table above are lower than 

the total amount of amortization recognized for the 
years ended December 31, 2018, 2017 and 2016, as 

73

a result of the impact of the impairment charges 
discussed above.

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.

Collaboration Profit (Loss) Sharing

Collaboration profit (loss) sharing includes our 

partner’s 50% share of the profit or loss related to our 
biosimilars commercial agreement with Samsung 
Bioepis and our partner’s 50% share of the co-
promotion profits or losses in the E.U. and Canada 
related to our collaboration agreement with AbbVie on 
the commercialization of ZINBRYTA. 

For 2018, 2017 and 2016, we recognized a net 

profit-sharing expense of $187.4 million, $111.0 
million and $15.1 million, respectively, to reflect 
Samsung Bioepis’ 50% sharing of the net 
collaboration profits. The increase in profit-sharing 
expense for the comparative periods were primarily 
due to increased collaboration profits resulting from 
increased biosimilar sales.

For 2018 we recognized net profit-sharing 
income of $2.4 million to reflect AbbVie’s 50% sharing 
of the net collaboration losses in the E.U. and 
Canada, compared to net profit-sharing expense of 
$1.3 million in 2017 to reflect AbbVie’s 50% sharing 
of the net collaboration profits in the E.U. and 
Canada, and net profit-sharing income of $4.9 million 
in 2016 to reflect AbbVie’s 50% sharing of the net 
collaboration losses in the E.U. and Canada. 

For additional information on our collaboration 

BIIB093 Acquisition

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

Acquired In-Process Research and Development

In May 2017 we acquired BIIB093 from Remedy. 
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. 

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.

Restructuring Charges

BIIB110 Acquisition

In July 2018 we acquired BIIB110 and ALG-802 
from 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 ready 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. BIIB100 is a Phase 1 ready 
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.

2017 Corporate Strategy

In October 2017, in connection with creating a 
leaner and simpler operating model, we approved a 
corporate restructuring program intended to 
streamline our operations and reallocate resources. 
We expect to make total non-recurring operating and 
capital expenditures of approximately $135.0 million 
in connection with this program and our goal is to 
redirect resources of up to $400.0 million annually by 
2020 to prioritized research and development and 
other value creation opportunities.

Throughout 2018 we reallocated resources 
within our research and development organization to 
maximize our investment in what we believe are our 
highest-potential programs. As a result, we have 
terminated certain research and development 
programs and redesigned clinical trial protocols with 
the goal of driving efficiencies and savings to be 
reinvested in such efforts. Additionally, we have 
focused efforts on implementing improvements to our 
core business processes as well as refining our 
facility footprint, which allowed for the further 
reallocation of resources towards prioritized research 
and investment in our sales and marketing 
organizations to fortify our core business in MS and 
SMA and to prepare for the potential launch of future 
products. 

74

For the years ended December 31, 2018 and 
2017, we recognized charges of $22.9 million and 
$19.4 million related to this effort, respectively, of 
which $12.0 million and $0.9 million, respectively, are 
reflected as restructuring charges and $10.9 million 
and $18.5 million, respectively, are included in selling, 
general and administrative expenses in our 
consolidated statements of income. These 
restructuring charges were primarily related to 
severance.

Restructuring charges incurred to date under 

this program have been substantially paid in cash as 
of December 31, 2018.

2016 Restructuring Charges

During the third quarter of 2016 we initiated cost 

saving measures primarily intended to realign our 
organizational structure due to the changes in roles 
and workforce resulting from our decision to spin-off 
our hemophilia business, and to achieve further 
targeted cost reductions. For the year ended 
December 31, 2016, we recognized charges totaling 
$17.7 million related to this effort. These amounts, 
which were substantially incurred and paid by the end 
of 2016, were primarily related to severance and are 
reflected in restructuring charges in our consolidated 
statements of income.

Cambridge, MA Manufacturing Facility

In June 2016 following an evaluation of our 
current and future manufacturing capabilities and 
capacity needs, we decided to cease manufacturing 
and vacate our 67,000 square foot small-scale 
biologics manufacturing facility in Cambridge, MA and 
close and vacate our 46,000 square foot warehouse 
space in Somerville, MA.

In December 2016 we subleased our rights to 

the Cambridge, MA manufacturing facility to Brammer 
Bio MA, LLC (Brammer). Brammer also purchased 
from us certain manufacturing equipment, leasehold 
improvements and other assets in exchange for 
shares of Brammer common LLC interests and 
assumed manufacturing operations effective January 
1, 2017. In December 2016 we closed and vacated 
our warehouse space in Somerville, MA.

Our departure from these facilities shortened the 

expected useful lives of certain leasehold 
improvements and other assets at these facilities. As 
a result, we recorded additional depreciation expense 
to reflect the assets’ new shorter useful lives. For the 
year ended December 31, 2016, we recognized 
approximately $45.5 million of this additional 
depreciation, which was recorded as cost of sales in 
our consolidated statements of income.

In the fourth quarter of 2016 we also recognized 

charges totaling $7.4 million for severance costs 

related to certain employees separated from Biogen 
in connection with our departure from these facilities. 
These amounts were substantially incurred and paid 
by the end of first quarter of 2017 and are reflected 
in restructuring charges in our consolidated 
statements of income for the year ended 
December 31, 2016.

2015 Restructuring Charges

Restructuring charges for the year ended 
December 31, 2016, include $8.0 million of expense 
related to our 2015 restructuring program.

(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 2018 was primarily due 
to delays in the expected timing of achievement of 
milestones related to our vixotrigine program for the 
treatment of TGN and an increase in discount rates 
used to revalue our contingent consideration 
liabilities, partially offset by the passage of time. For 
additional information on our IPR&D intangible asset 
related to our vixotrigine program for the treatment of 
TGN, please read Note 7, Intangible Assets and 
Goodwill, to our consolidated financial statements 
included in this report.

The loss on fair value remeasurement of 
contingent consideration for 2017 was primarily due 
to the increase in the probability of achieving certain 

75

developmental milestones based upon the 
progression of the underlying clinical programs.

Other Income (Expense), Net

The loss on fair value remeasurement of 
contingent consideration for 2016 was primarily due 
to changes in the probability of achieving certain 
developmental milestones based upon the 
progression of the underlying clinical programs and 
changes in the discount rate.

TECFIDERA Litigation Settlement Charge

As described above under Amortization and 
Impairment of Acquired Intangible Assets - TECFIDERA 
License Rights, in January 2017 we entered into a 
settlement and license agreement with Forward 
Pharma pursuant to which we obtained U.S. and rest 
of world licenses to Forward Pharma’s intellectual 
property, including Forward Pharma’s intellectual 
property related to TECFIDERA. In exchange, we paid 
Forward Pharma $1.25 billion in cash. During the 
fourth quarter of 2016, we recognized a pre-tax 
charge of $454.8 million and, in the first quarter of 
2017, we recognized an intangible asset of $795.2 
million related to this agreement. The pre-tax charge 
recognized in the fourth quarter of 2016 represented 
the fair value of our licenses to Forward Pharma’s 
intellectual property for the period April 2014, when 
we started selling TECFIDERA, through December 31, 
2016.

For additional information on our TECFIDERA 
settlement and license agreement, please read Note 
7, Intangible Assets and Goodwill, to our consolidated 
financial statements included in this report.

Effective January 1, 2018, other income 

(expense), net for the year ended December 31, 
2018, 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. Changes in the fair value of our 
strategic investments could have a significant impact 
on our results of operations in any given period. For 
2018 net gains (losses) recognized in relation to the 
changes in fair value of our strategic investments 
totaled $128.0 million, which are reflected in the net 
gains discussed below. Prior to the adoption of this 
standard, we recognized changes in fair value of our 
strategic investment in accumulated other 
comprehensive income (loss), net. 

For 2018 compared to 2017, the change in other 

income (expense), net was primarily due to the 
recognition of net gains totaling $119.5 million 
recorded in 2018 in relation to our investment 
portfolio as compared to net losses totaling $36.3 
million in 2017. The change in other income 
(expense), net for 2018, compared to 2017, was also 
due to a decrease in interest expense due to the 
redemption in November 2017 of our 6.875% Senior 
Notes due March 1, 2018, and an increase in 
capitalized interest costs, which was primarily related 
to the ongoing construction of our manufacturing 
facility in Solothurn, Switzerland as well as an 
increase in interest income primarily due to higher 
interest rates. These comparative net increases were 
partially offset by foreign exchange losses recognized 
in 2018 compared to gains recognized in 2017. 

For 2017 compared to 2016, the change in other 

income (expense), net was primarily due to an 
increase in foreign currency exchange gains, an 
increase in interest income, primarily due to higher 
interest rates, and a decrease in interest expense 

76

due to the redemption in November 2017 of our 
6.875% Senior Notes due March 1, 2018. These 
comparative net increases were partially offset by 
other than temporary impairments recognized on 
strategic investments and marketable debt securities 
during 2017.

Income Tax Provision

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, 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. Included in our effective 
tax rate for 2018 was an increase of approximately 
350 basis points related to the sale of inventory, the 
tax effect of which had been included within prepaid 
taxes at December 31, 2017, at a higher effective tax 
rate. The effective tax rate for the year ended 

77

December 31, 2017, also reflected the impact of a 
favorable settlement related to a state tax matter in 
2017.

For 2017 compared to 2016, the increase in our 
effective tax rate was primarily due to the effect of the 
2017 Tax Act and the impairment of prepaid tax 
assets related to our ZINBRYTA program.

Excluding the effect of these items, our income 

tax rate would have decreased due to a lower 
percentage of our earnings being recognized in the 
U.S., a higher tax jurisdiction. The geographic split of 
our earnings was affected by milestone and upfront 
payments in the current year and the spin-off of our 
hemophilia business, partially offset by growth from 
the U.S. launch of SPINRAZA and increases in our 
revenues from anti-CD20 therapeutic programs in the 
U.S. In addition, in 2017 we earned a lower benefit 
from the Orphan Drug Credit due to the FDA’s approval 
of SPINRAZA.

2017 Tax Act

The 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 to U.S. taxation as GILTI, and includes 
base erosion prevention measures on non-U.S. 
earnings. These changes became effective in 2018. 
During the fourth quarter of 2018 we elected to 
recognize deferred taxes for 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, resulting in our 
recording of a $135.8 million income tax expense 
during the year ended December 31, 2018.

During the fourth quarter of 2017 we recognized 

within our provision for income taxes a $1.2 billion 
provisional estimate pursuant to SEC Staff Accounting 
Bulletin No. 118. Our provisional estimate included an 
amount of $989.6 million associated with the 
Transition Toll Tax, which is a one-time mandatory 
deemed repatriation tax on accumulated foreign 
subsidiaries’ previously untaxed foreign earnings, 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. 

The final determination of the Transition Toll Tax 

and remeasurement of our deferred assets and 
liabilities was completed in the fourth quarter of 
2018.

Article 20 Procedure of ZINBRYTA

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 19, 
Collaborative and Other Relationships, to our 
consolidated financial statements included in this 
report.

For 2017 compared to 2016, excluding the 

effect of the 2017 Tax Act and the ZINBRTYA 
impairment, our income tax rate would have 
decreased due to a lower percentage of our earnings 
being recognized in the U.S., a higher tax jurisdiction. 
The geographic split of our earnings was affected by 
milestone and upfront payments in the current year 
and the spin-off of our hemophilia business, partially 
offset by growth from the U.S. launch of SPINRAZA 
and increases in our revenues from anti-CD20 
therapeutic programs in the U.S. In addition, in 2017 
we earned a lower benefit from the Orphan Drug 
Credit due to the FDA’s approval of SPINRAZA.

Accounting for Uncertainty in Income Taxes

For additional information on our uncertain tax 

positions and income tax rate reconciliation for 2018, 
2017 and 2016, please read Note 17, Income Taxes, 

to our consolidated financial statements included in 
this report.

Noncontrolling Interest

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 20, 
Investments in Variable Interest Entities, to our 
consolidated financial statements included in this 
report.

78

Financial Condition, Liquidity and Capital Resources

Our financial condition is summarized as follows:

(In millions, except percentages)
Financial assets:

As of December 31,

2018

2017

% Change

2018 
compared to 
2017

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

Total cash, cash equivalents and marketable securities .......... $

1,224.6 $
2,313.4
1,375.9
4,913.9 $

1,573.8
2,115.2
3,057.3
6,746.3

(22.2)%
9.4 %
(55.0)%
(27.2)%

Borrowings:

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

Total borrowings ................................................................... $

— $

5,936.5
5,936.5 $

3.2
5,935.0
5,938.2

(100.0)%
— %
— %

Working Capital:

Current assets ......................................................................... $
Current liabilities......................................................................

Total working capital ............................................................. $

7,640.9 $
(3,295.2)
4,345.7 $

7,873.3
(3,368.2)
4,505.1

(3.0)%
(2.2)%
(3.5)%

For the year ended December 31, 2018, certain 

For the year ended December 31, 2017, certain 

significant cash flows were as follows:

significant cash flows were as follows:

•  $6.2 billion in net cash flows provided by 

•  $4.6 billion in net cash flows provided by 

operating activities, net of: 

operating activities, net of:

  $1.0 billion in total net payments for 

income taxes;

  $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 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.

  $1.1 billion in total net payments for 

income taxes;

  $463.0 million in upfront and milestone 
payments made to BMS, iPierian, Eisai, 
Alkermes and Ionis; and

  $454.8 million payment made to Forward 

Pharma for the litigation settlement charge 
that was accrued as of December 31, 
2016;

•  $1.4 billion used for share repurchases;

•  $1.2 billion in contingent payments made to 
former shareholders of Fumapharm AG and 
holders of their rights;

•  $867.4 million used for purchases of property, 

plant and equipment;

•  $795.2 million payment made to Forward 

Pharma to license Forward Pharma’s intellectual 
property, including Forward Pharma’s intellectual 
property related to TECFIDERA;

•  $557.7 million payment made for the 

redemption of our 6.875% Senior Notes due 
March 1, 2018, prior to their maturity;

•  $302.7 million net cash contribution made in 
connection with the spin-off of our hemophilia 
business;

79

 
•  $295.0 million in upfront and milestone 

payments made to Remedy, Ionis and Samsung 
Bioepis; and

•  $132.4 million payment, net of tax, made to 

Neurimmune in exchange for a 15% reduction in 
the previously negotiated royalty rates payable on 
products developed under the Neurimmune 
Agreement, including royalties payable on 
potential commercial sales of aducanumab.

Overview

We have historically financed our operating and 
capital expenditures primarily through cash flows 
earned through our operations. We expect to continue 
funding our current and planned operating 
requirements principally through our cash flows from 
operations, as well as our existing cash resources. 
We believe that our existing funds, when combined 
with cash generated from operations and our access 
to additional financing resources, if needed, are 
sufficient to satisfy our operating, working capital, 
strategic alliance, milestone payment, capital 
expenditure and debt service requirements for the 
foreseeable future. In addition, we may choose to 
opportunistically return cash to shareholders and 
pursue other business initiatives, including acquisition 
and licensing activities. We may, from time to time, 
also seek additional funding through a combination of 
new collaborative agreements, strategic alliances and 
additional equity and debt financings or from other 
sources should we identify a significant new 
opportunity.

Tax Reform

The 2017 Tax Act resulted in significant changes to 

the U.S. corporate income tax system.  

The 2017 Tax Act eliminated the deferral of U.S. 
income tax on the historical unrepatriated earnings by 
imposing the Transition Toll Tax, which is a one-time 
mandatory deemed repatriation tax on accumulated 
foreign subsidiaries’ previously untaxed foreign 
earnings. The Transition Toll Tax was assessed on our 
share of our foreign corporations’ accumulated foreign 
earnings that have not previously been taxed. 

At December 31, 2018, we considered none of 

our earnings 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 related to 
foreign subsidiaries. These differences are estimated 
to total approximately $1.5 billion and primarily arose 
through the impacts of purchase accounting. These 
basis differences could reverse through sales of the 
foreign subsidiaries, as well as various other events, 

80

none of which are considered probable as of 
December 31, 2018. The residual U.S. tax liability, if 
these differences would reverse, would be between 
$0.3 billion to $0.4 billion as of December 31, 2018.

As of December 31, 2018 and 2017, we have 
accrued income tax liabilities of $697.0 million and 
$989.6 million, respectively, under the Transition Toll 
Tax. The decrease in this liability is primarily attributed 
to our 2018 Transition Toll Tax payment of $85.0 
million, the application by the IRS of an approximately 
$150.0 million overpayment against the accrual and 
the net reduction of approximately $34.6 million in 
our estimated Transition Toll Tax. Of the amounts 
accrued as of December 31, 2018, no amounts are 
expected to be paid within one year due to the 
overpayment discussed above. The Transition Toll Tax 
will be paid in installments over an eight-year period, 
which started in 2018, and will not accrue interest. 
For additional information on the 2017 Tax Act, please 
read Note 17, Income Taxes, to our consolidated 
financial statements included in this report.

After repatriating approximately $3.5 billion 
during the first quarter of 2018 as a result of the 
2017 Tax Act, approximately 51% of our total cash, 
cash equivalents and marketable securities at the 
end of the year were held in the U.S.

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.

Share Repurchase Programs

In August 2018 our Board of Directors 
authorized our 2018 Share Repurchase Program, 
which is a program to repurchase up to $3.5 billion of 
our common stock. Our 2018 Share Repurchase 
program does not have an expiration date. All share 
repurchases under our 2018 Share Repurchase 
Program will be retired. Under our 2018 Share 
Repurchase Program, we repurchased and retired 
approximately 4.3 million shares of our common 
stock at a cost of approximately $1.4 billion during 
the year ended December 31, 2018.

In July 2016 our Board of Directors authorized 

our 2016 Share Repurchase Program, which is a 
program to repurchase up to $5.0 billion of our 
common stock. 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, 3.7 million and 3.3 million 
shares of common stock at a cost of approximately 
$3.0 billion, $1.0 billion and $1.0 billion during the 

years ended December 31, 2018, 2017 and 2016, 
respectively.

In February 2011 our Board of Directors 
authorized our 2011 Share Repurchase Program, 
which is a program to repurchase up to 20.0 million 
shares of our common stock. Our 2011 Share 
Repurchase Program was completed as of March 31, 
2017. Share repurchases under our 2011 Share 
Repurchase Program were principally used to offset 
common stock issuances under our share-based 
compensation programs. Under our 2011 Share 
Repurchase Program, we repurchased approximately 
1.2 million shares of common stock at a cost of 
$365.4 million during the year ended December 31, 
2017. We did not repurchase any shares of common 
stock under our 2011 Share Repurchase Program 
during the year ended December 31, 2016.

Cash, Cash Equivalents and Marketable Securities

Until required for another use in our business, 

we typically invest our cash reserves in bank deposits, 
certificates of deposit, commercial paper, corporate 
notes, U.S. and foreign government instruments and 
other interest-bearing marketable debt instruments in 
accordance with our investment policy. It is our policy 
to mitigate credit risk in our cash reserves and 
marketable securities by maintaining a well-diversified 
portfolio that limits the amount of exposure as to 
institution, maturity and investment type. 

As of December 31, 2018, we had cash, cash 

equivalents and marketable securities totaling 
approximately $4.9 billion compared to approximately 
$6.7 billion as of December 31, 2017. The net 
decrease in cash, cash equivalents and marketable 
securities at December 31, 2018, from December 31, 
2017, was primarily due to cash used for share 
repurchases, contingent payments made to former 
shareholders of Fumapharm AG and holders of their 
rights, the payment made to Ionis upon the closing of 
the 2018 Ionis Agreement, net purchases of property, 
plant and equipment, payment made to Samsung 
BioLogics upon the closing of the share purchase 
transaction increasing our ownership percentage in 
Samsung Bioepis to approximately 49.9%, the upfront 
payments made to Karyopharm, Pfizer and AliveGen 
upon the acquisitions of BIIB100, BIIB104 and 
BIIB110, respectively, and the payment made to Ionis 
for the option exercise for BIIB067. These decreases 
were partially offset by cash flows from operations. 

In addition, investments and other assets in our 

consolidated balance sheet as of December 31, 
2018, includes the carrying value of our investment in 
Samsung Bioepis of $680.6 million. 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 

81

such investment. Investments in other assets, as of 
December 31, 2018, also includes an asset of 
$563.8 million reflecting the fair value of our 
investment in Ionis’ common stock, which is subject 
to certain holding period restrictions.

For additional information on our acquisitions of 

BIIB100, BIIB104 and BIIB110, please read Note 2, 
Acquisitions, to our consolidated financial statements 
included in this report. For additional information on 
the 2018 Ionis Agreement, the additional investment 
in Samsung Bioepis and the option exercise for 
BIIB067, please read Note 19, 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, 2018:

•  $1.5 billion aggregate principal amount of 2.90% 
Senior Notes due September 15, 2020, valued 
at 99.792% of par;

•  $1.0 billion aggregate principal amount of 

3.625% Senior Notes due September 15, 2022, 
valued at 99.920% of par;

•  $1.75 billion aggregate principal amount of 

4.05% Senior Notes due September 15, 2025, 
valued at 99.764% of par; and

•  $1.75 billion aggregate principal amount of 

5.20% Senior Notes due September 15, 2045, 
valued at 99.294% of par.

These Senior Notes were issued at discount and 
are amortized as additional interest expense over the 
period from issuance through maturity.

During the third quarter of 2015 we entered into 

a $1.0 billion, five-year senior unsecured revolving 
credit facility under which we are permitted to draw 
funds for working capital and general corporate 
purposes. The terms of the revolving credit facility 
include a financial covenant that requires us not to 
exceed a maximum consolidated leverage ratio. As of 
December 31, 2018, we had no outstanding 
borrowings and were in compliance with all covenants 
under this facility.

In connection with our 2006 distribution 
agreement with Fumedica AG, we issued notes 
totaling 61.4 million Swiss Francs that were payable 
to Fumedica AG in varying amounts from June 2008 
through June 2018. In June 2018 we redeemed our 
remaining note payable to Fumedica AG, which had a 
carrying value of 3.1 million Swiss Francs ($3.2 
million) as of December 31, 2017.

For a summary of the fair values of our 

outstanding borrowings as of December 31, 2018 and 
2017, please read Note 8, Fair Value Measurements, 
to our consolidated financial statements included in 
this report.

Working Capital

Working capital is defined as current assets less 

current liabilities. The change in working capital at 
December 31, 2018, from December 31, 2017, 
reflects a decrease in total current assets of $232.4 
million and a decrease in total current liabilities of 
$73.0 million. 

The net decrease in total current assets was 
primarily due to a decrease in prepaid taxes related to 
intra-entity inventory transactions, partially offset by 
an increase in accounts receivable, net related to our 
ongoing operations.

Cash Flows

The following table summarizes our cash flow activity:

The net decrease in total current liabilities was 
primarily due to a reduction in accrued expenses and 
other and a decrease in accounts payable. The net 
decrease in accrued expenses and other was due to a 
decrease in the accrual of contingent payments 
related to FUMADERM and TECFIDERA (together, the 
Fumapharm Products), a decrease in accrued 
contingent consideration due to the milestone 
payment made to the former shareholders of 
Stromedix Inc. (Stromedix) and a decrease in our 
derivative liabilities. These decreases were partially 
offset by an increase in our accrued revenue related 
rebates due primarily to an increase in SPINRAZA and 
biosimilars revenues and an increase in accrued 
collaboration expenses due to an increase in 
expenses related to our collaboration with Samsung 
Bioepis.

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

For the Years Ended
December 31,

2018

2017

2016

% Change

2018 
compared to 
2017

2017 
compared to 
2016

6,187.7 $

4,551.0 $

4,587.2

36.0 %

(0.8)%

(2,046.3) $

(2,963.1) $

(2,484.8)

(30.9)%

19.2 %

(4,472.0) $

(2,380.0) $

(1,052.6)

87.9 %

126.1 %

Operating Activities

Cash flows from operating activities represent 

the cash receipts and disbursements related to all of 
our activities other than investing and financing 
activities. We expect cash provided from operating 
activities will continue to be our primary source of 
funds to finance operating needs and capital 
expenditures for the foreseeable future.

Operating cash flow is derived by adjusting our 

net income for:

•  non-cash operating items such as depreciation 
and amortization, impairment charges, acquired 
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 2018 compared to 2017, the increase in net 

cash flows provided by operating activities was 
primarily due to an increase in net income, improved 
collections from customers and collaborators, higher 
relative accruals for revenue-related reserves and 
lower overall cash income taxes paid. These factors 
were partially offset by higher spending related to 
business development activities discussed below.  

The net cash flows provided by operating 

activities for the year ended December 31, 2018, 
were reduced by the $375.0 million upfront payment 
made to Ionis upon the closing of the 2018 Ionis 
Agreement and the $162.1 million charge reflecting 
the premium paid for the purchase of Ionis’ common 
stock compared to payments totaling $463.0 million 
in 2017 to BMS, iPierian, Eisai, Alkermes and Ionis.

The net cash flows provided by operating 

activities for the year ended December 31, 2017, 
were reduced by the $454.8 million payment made to 
Forward Pharma for the litigation settlement charge in 
the first quarter of 2017 that was accrued as of 
December 31, 2016.

82

 
 
For 2017 compared to 2016, net cash flows 
provided by operations were relatively consistent. 
Higher sales and lower income tax payments were 
offset by the $454.8 million payment related to our 
settlement and license agreement with Forward 
Pharma, which had been accrued as of December 31, 
2016, and the timing of customer payments, including 
amounts due in connection with anti-CD20 
therapeutic programs.

For 2017 compared to 2016, net income was 

lower primarily due to the Transition Toll Tax under the 
2017 Tax Act and higher depreciation and 
amortization.

Investing Activities

For 2018 compared to 2017, the decrease in 

net cash flows used in investing activities was 
primarily due to:

•  higher net proceeds of marketable securities;

• 

the 2017 $795.2 million payment made to 
Forward Pharma to license Forward Pharma’s 
intellectual property, including Forward Pharma’s 
intellectual property related to TECFIDERA; and

•  a decrease in purchases of property, plant and 

equipment. 

These changes were partially offset by the following 
increases to investing activity:

• 

• 

the $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%;

the $462.9 million payment made to Ionis 
reflecting the fair value of the common stock 
purchased upon the closing of the 2018 Ionis 
Agreement; and 

•  an increase in contingent payments made to 

former shareholders of Fumapharm AG and 
holders of their rights.

For 2017 compared to 2016, the increase in net 

cash flows used in investing activities was primarily 
due to:

• 

the $795.2 million payment made to Forward 
Pharma to license Forward Pharma’s intellectual 
property, including Forward Pharma’s intellectual 
property related to TECFIDERA;

•  an increase in purchases of property, plant and 
equipment primarily related to the construction 
of our Solothurn, Switzerland facility;

•  $175.0 million in milestone payments made to 

Ionis and Samsung Bioepis; and

• 

the $120.0 million payment made to Remedy for 
the acquisition of BIIB093.

These increases were partially offset by an increase 
in net proceeds of marketable securities. 

Financing Activities

For 2018 compared to 2017, the increase in net 

cash flows used in financing activities was primarily 
due to an increase in cash used for share 
repurchases. The effect of the increase in share 
repurchases was partially offset by lower repayment of 
outstanding debt, the contribution made in connection 
with the spin-off of our hemophilia business in the 
first quarter of 2017 and lower net distributions to 
noncontrolling interest reflecting the payments made 
to Neurimmune in October 2017 and May 2018. 

For 2017 compared to 2016, the increase in net 

cash flows used in financing activities was primarily 
due to an increase in cash used for share 
repurchases, the payment made for the redemption of 
our 6.875% Senior Notes due March 1, 2018, prior to 
their maturity, the net cash contribution made in 
connection with the spin-off of our hemophilia 
business on February 1, 2017, and the net 
distributions to noncontrolling interest, including the 
payment made to Neurimmune in exchange for a  
reduction of 15% in the previously negotiated royalty 
rates payable on products developed under the 
Neurimmune Agreement, including royalties payable 
on potential commercial sales of aducanumab.

83

Contractual Obligations and Off-Balance Sheet Arrangements

Contractual Obligations

The following table summarizes our contractual obligations as of December 31, 2018, 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

418.8 $

60.2 $

107.3 $

94.4 $

241.6
327.0
—
628.8 $

1,939.8
132.2
—

1,360.0
234.6
—

2,179.3 $

1,689.0 $

156.9
5,643.8
420.9
93.8
6,315.4

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

9,185.2
1,114.7
93.8

Total contractual obligations ................. $ 10,812.5 $

(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 primarily related 
to our Senior Notes, including principal and 
interest payments. 

(4)  Purchase and other obligations primarily include 
our obligations to purchase direct materials, 
$697.0 million related to the remaining 
payments on the Transition Toll Tax, $111.0 
million in contractual commitments for the 
construction of our large-scale biologics 
manufacturing facility in Solothurn, Switzerland 
and $24.6 million related to the fair value of net 
liabilities on derivative contracts. 

Contingent 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 sales up to $2.0 billion and 25% on 

84

annual worldwide net sales that exceed $2.0 billion. 
Royalty payments to Elan and other third parties are 
recognized as cost of sales in our consolidated 
statements of income. Elan was acquired by Perrigo 
Company plc (Perrigo) in December 2013, and Perrigo 
subsequently sold its rights to these payments to a 
third-party effective January 2017.

SPINRAZA

In the third quarter of 2016 we exercised our 

option to develop and commercialize SPINRAZA from 
Ionis. Under our agreement with Ionis, we make 
royalty payment to Ionis on annual worldwide net 
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 19, 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 Ltd. (Convergence), 
Stromedix and Biogen International Neuroscience 
GmbH (BIN), we agreed to make additional payments 
based upon the achievement of certain milestone 
events. 

As the acquisitions of Convergence, Stromedix 

and BIN occurred after January 1, 2009, we 
recognized the contingent consideration liabilities 
associated with these transactions at their fair value 
on the acquisition date and revalue these obligations 
each reporting period. We may pay up to 
approximately $1.0 billion 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 
paid $220.0 million upon closing of the transaction 
and agreed to pay an additional $15.0 million if a 
Fumapharm Product was approved for MS in the 
U.S. or E.U. In the second quarter of 2013 
TECFIDERA was approved in the U.S. for MS by the 
FDA and we made the $15.0 million contingent 
payment. We are also required to make additional 
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 
are due. These payments are accounted for as an 
increase to goodwill as incurred, in accordance with 
the accounting standard applicable to business 
combinations when we acquired Fumapharm AG. Any 
portion of the payment that is tax deductible was 
recorded as a reduction to goodwill. Payments are due 
within 60 days following the end of the quarter in 
which the applicable cumulative sales level was 
reached. 

During 2018 we paid $1.5 billion in contingent 

payments as we reached the $15.0 billion and $16.0 
billion cumulative sales levels related to the 
Fumapharm Products in the fourth quarter of 2017 
and the $17.0 billion, $18.0 billion and $19.0 billion 
cumulative sales levels related to the Fumapharm 
Products in the first, second and third quarters of 
2018, respectively. In the fourth quarter of 2018 we 
achieved the $20.0 billion cumulative sales level 
threshold and accrued our last $300.0 million 
contingent payment related to the Fumapharm 
Products, which will be paid in the first quarter of 
2019.

Contingent Development, Regulatory and 

Commercial Milestone Payments

Based on our development plans as of 

December 31, 2018, we could make potential future 
milestone payments to third parties of up to 
approximately $5.0 billion, including approximately 
$0.7 billion in development milestones, approximately 
$1.8 billion in regulatory milestones and 
approximately $2.5 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 

85

of December 31, 2018, such contingencies have not 
been recorded in our financial statements. Amounts 
related to contingent milestone payments are not 
considered contractual obligations as they are 
contingent on the successful achievement of certain 
development, regulatory approval or commercial 
milestones. 

Provided various development, regulatory or 

commercial milestones are achieved, we anticipate 
that we may pay approximately $250.0 million of 
milestone payments in 2019. 

Other Funding Commitments

As of December 31, 2018, we have several 
ongoing clinical studies in various clinical trial stages. 
Our most significant clinical trial expenditures are to 
contract research organizations (CROs). The contracts 
with CROs are generally cancellable, with notice, at 
our option. We recorded accrued expenses of 
approximately $27.0 million in our consolidated 
balance sheet for expenditures incurred by CROs as 
of December 31, 2018. We have approximately 
$655.0 million in cancellable future commitments 
based on existing CRO contracts as of December 31, 
2018.

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, 2018, we have 
$117.7 million of net liabilities associated with 
uncertain tax positions. 

As of December 31, 2018 and 2017, we have 
accrued income tax liabilities of $697.0 million and 
$989.6 million, respectively, under the Transition Toll 
Tax. Of the amounts accrued as of December 31, 
2018, no amounts are expected to be paid within one 
year due to a $150.0 million overpayment of taxes in 
the current year. The Transition Toll Tax will be paid in 
installments over an eight-year period, which started 
in 2018, and will not accrue interest.

Other Off-Balance Sheet Arrangements

We do not have any relationships with entities 

often referred to as structured finance or special 
purpose entities that were established for the 
purpose of facilitating off-balance sheet 
arrangements. As such, we are not exposed to any 
financing, liquidity, market or credit risk that could 
arise if we had engaged in such relationships. We 
consolidate variable interest entities if we are the 
primary beneficiary.

Legal Matters

For a discussion of legal matters as of 

December 31, 2018, please read Note 21, Litigation, 
to our consolidated financial statements included in 
this report.

Critical Accounting Estimates

The preparation of our consolidated financial 
statements, which have been prepared in accordance 
with accounting principles generally accepted in the 
U.S. (U.S. GAAP), requires us to make estimates, 
judgments and assumptions that may affect the 
reported amounts of assets, liabilities, equity, 
revenues and expenses and related disclosure of 
contingent assets and liabilities. On an 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

In May 2014 the Financial Accounting Standards 
Board (FASB) issued 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.

The FASB subsequently issued the following 
amendments to ASU 2014-09 that have the same 
effective date and transition date: ASU No. 2016-08, 
Revenue from Contract with Customers (Topic 606): 
Principal versus Agent Considerations; ASU No. 
2016-10, Revenue from Contracts with Customers 
(Topic 606): Identifying Performance Obligations and 
Licensing; ASU No. 2016-12, Revenue from Contracts 
with Customers (Topic 606): Narrow-Scope 
Improvements and Practical Expedients; and ASU No. 
2016-20, Technical Corrections and Improvements to 
Topic 606, Revenue from Contracts with Customers. 
We adopted these amendments with ASU 2014-09 
(collectively, the new revenue standards).

The new revenue standards became effective for 

us on January 1, 2018, and were adopted using the 
modified retrospective method. The adoption of the 
new revenue standards as of January 1, 2018, did not 

86

result in a significant change to our revenue 
recognition as the majority of our revenues continue 
to be recognized when the customer takes control of 
our product. As we did not identify any accounting 
changes that impacted the amount of reported 
revenues with respect to our product revenues, 
revenues from anti-CD20 therapeutic programs or 
other revenues, no adjustment to retained earnings 
was required upon adoption. However, the adoption of 
the new revenue standards will result in a change in 
the timing of revenue recognition related to certain of 
our contract manufacturing activities based upon the 
terms of the underlying agreements.

Under the new revenue standards, 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 ASU 2014-09: (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.

Revenues from product sales 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

Revenues from product sales 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.

research and development expense as they are 
incurred.

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 the 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 5, 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 

We have acquired, and expect to continue to 

acquire, intangible assets through the acquisition of 
biotechnology companies or through the consolidation 
of variable interest entities. These intangible assets 
primarily consist of technology associated with human 
therapeutic products and IPR&D product candidates. 
When significant identifiable intangible assets are 
acquired, we generally engage an independent third-
party valuation firm to assist in determining the fair 
values of these assets as of the acquisition date. 
Management will determine the fair value of less 
significant identifiable intangible assets acquired. 
Discounted cash flow models are typically used in 
these valuations, and these models require the use of 
significant estimates and assumptions including but 
not limited to:

•  estimating the timing of and expected costs to 

complete the in-process projects;

•  projecting regulatory approvals;

•  estimating future cash flows from product sales 

resulting from completed products and in 
process projects; and

•  developing appropriate discount rates and 

probability rates by project.

We believe the fair values assigned to the 

intangible assets acquired are based upon 
reasonable estimates and assumptions given 
available facts and circumstances as of the 
acquisition dates.

If these projects are not successfully developed, 

the sales and profitability of the company may be 
adversely affected in future periods. Additionally, the 
value of the acquired intangible assets may become 
impaired. We believe that the foregoing assumptions 
used in the IPR&D analysis were reasonable. No 
assurance can be given that the underlying 
assumptions used to estimate expected project sales, 
development costs or profitability, or the events 
associated with such projects, will transpire as 
estimated.

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 

87

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 and 
developed technology. 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. 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 and TECFIDERA 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 and 
TECFIDERA 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 or TECFIDERA products.

For additional information on the impairment 

charges related to our long-lived assets during 2018, 
2017 and 2016, please read Note 7, Intangible Assets 
and Goodwill, to our consolidated financial statements 
included in this report.

Goodwill

Goodwill relates largely to amounts that arose in 

connection with the merger of Biogen, Inc. and IDEC 
Pharmaceuticals Corporation in 2003 and amounts 
that are being paid in connection with the acquisition 
of Fumapharm AG. Our goodwill balances represent 
the difference between the purchase price and the fair 
value of the identifiable tangible and intangible net 

88

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 2018, 2017 and 2016 
and determined in each of those periods that the 
carrying value of goodwill was not impaired. In each 
year, the fair value of our reporting unit, which 
includes goodwill, was significantly in excess of the 
carrying value of our reporting unit.

Investments, including Fair Value Measurements and 

Impairment

We invest in various types of securities, 
including short-term and long-term marketable 
securities, principally corporate notes, government 
securities including government sponsored enterprise 
mortgage-backed securities and credit card and auto 
loan asset-backed securities, in which our excess 
cash balances are invested. We also invest in equity 
securities of certain biotechnology companies and 
venture capital funds where the underlying 
investments are in equity securities of certain 
biotechnology companies.

In accordance with the accounting standard for 

fair value measurements, we have classified our 
financial assets as Level 1, 2 or 3 within the fair value 
hierarchy. Fair values determined by Level 1 inputs 
utilize quoted prices (unadjusted) in active markets for 
identical assets that we have the ability to access. 
Fair values determined by Level 2 inputs utilize data 
points that are observable such as quoted prices, 
interest rates, yield curves, foreign currency spot 
rates and option pricing valuation models. Fair values 
determined by Level 3 inputs utilize unobservable 
data points for the asset.

As discussed in Note 8, Fair Value 
Measurements, to our consolidated financial 
statements included in this report, a majority of our 
financial assets have been classified as Level 2. 
These assets have been initially valued at the 
transaction price and subsequently valued, at the end 
of each reporting period, utilizing third-party pricing 
services or option pricing valuation models. The 
pricing services use many observable market inputs 
to determine value, including reportable trades, 

benchmark yields, credit spreads, broker/dealer 
quotes, bids, offers, current spot rates and other 
industry and economic events. We validate the prices 
provided by our third-party pricing services by 
understanding the models used, obtaining market 
values from other pricing sources and analyzing 
pricing data in certain instances. 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. 

Changes in our fair value measurements could 

have a significant impact on our results of operations 
in any given period.

Impairment

We conduct periodic reviews to identify and 
evaluate each investment that has an unrealized loss, 
in accordance with the meaning of other-than-
temporary impairment and its application to certain 
investments. An unrealized loss exists when the 
current fair value of an individual security is less than 
its amortized cost basis. Unrealized losses on 
available-for-sale debt securities that are determined 
to be temporary, and not related to credit loss, are 
recorded, net of tax, in accumulated other 
comprehensive income.

For available-for-sale debt securities with 
unrealized losses, management performs an analysis 
to assess whether we intend to sell or whether we 
would more likely than not be required to sell the 
security before the expected recovery of the 
amortized cost basis. Where we intend to sell a 
security, or may be required to do so, the security’s 
decline in fair value is deemed to be other-than-
temporary and the full amount of the unrealized loss 
is reflected within earnings as an impairment loss.

Regardless of our intent to sell a security, we 

perform additional analysis on all securities with 
unrealized losses to evaluate losses associated with 
the creditworthiness of the security. Credit losses are 
identified where we do not expect to receive cash 
flows sufficient to recover the amortized cost basis of 
a security and are reflected within earnings as an 
impairment loss.

Share-Based Compensation

We make certain assumptions in order to value 

and record expense associated with awards made 
under our share-based compensation arrangements. 
Changes in these assumptions may lead to variability 
with respect to the amount of expense we recognize 
in connection with share-based payments.

Determining the appropriate valuation model and 

related assumptions requires judgment, and includes 
estimating the expected market price of our stock on 
vesting date and stock price volatility as well as the 

89

term of the expected awards. Determining the 
appropriate amount to expense based on the 
anticipated achievement of performance targets 
requires judgment, including forecasting the 
achievement of future financial targets. The estimate 
of expense is revised periodically based on the 
probability of achieving the required performance 
targets and adjustments are made throughout the 
term as appropriate. The cumulative impact of any 
revision is reflected in the period of change.

We also estimate forfeitures over the requisite 

service period when recognizing share-based 
compensation expense based on historical rates and 
forward-looking factors. These estimates are adjusted 
to the extent that actual forfeitures differ, or are 
expected to materially differ, from our estimates.

Contingent Consideration

For acquisitions completed before January 1, 
2009, we record contingent consideration resulting 
from a business combination when the contingency is 
resolved. For acquisitions of a business completed 
after January 1, 2009, we record contingent 
consideration resulting from a business combination 
at its fair value on the acquisition date. Each 
reporting period thereafter, we revalue these 
obligations and record increases or decreases in their 
fair value as an adjustment to contingent 
consideration expense in our consolidated statements 
of income. Changes in the fair value of 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. Our estimates of 
future taxable income include, among other items, our 
estimates of future income tax deductions related to 
the exercise of stock options. In the event that actual 
results differ from our estimates, we adjust our 
estimates in future periods and we may need to 
establish a valuation allowance, which could 
materially impact our consolidated financial position 
and results of operations.

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 
deferred tax assets of approximately $2.0 billion, 
offset by a corresponding increase to deferred tax 
liabilities of approximately $1.5 billion and an 
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 our retained earnings as these differences are 
related to inter-entity transactions. We will recognize 
incremental deferred income tax expense thereafter 
as these deferred tax assets and liabilities are 
utilized.

For additional information on ASU 2016-16, 

please read Note 17, Income Taxes, to our 

consolidated financial statements included in this 
report.

We account for uncertain tax positions using a 
“more-likely-than-not” threshold for recognizing and 
resolving uncertain tax positions. We evaluate 
uncertain tax positions on a quarterly basis and 
consider various factors 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.

We earn a significant amount of our operating 
income outside the U.S. As a result, a portion of our 
cash, cash equivalents and marketable securities are 
held by foreign subsidiaries. 

The 2017 Tax Act resulted in significant changes to 

the U.S. corporate income tax system.  

The 2017 Tax Act eliminated the deferral of U.S. 
income tax on the historical unrepatriated earnings by 
imposing the Transition Toll Tax, which is a one-time 
mandatory deemed repatriation tax on accumulated 
foreign subsidiaries’ previously untaxed foreign 
earnings. The Transition Toll Tax was assessed on our 
share of our foreign corporations’ accumulated foreign 
earnings that were not previously taxed.  

As of December 31, 2018 and 2017, we have 
accrued income tax liabilities of $697.0 million and 
$989.6 million, respectively, under the Transition Toll 
Tax. Of the amounts accrued as of December 31, 
2018, no amounts are expected to be paid within one 
year due to a $150.0 million overpayment of taxes in 
the current year. The Transition Toll Tax will be paid in 
installments over an eight-year period, which started 
in 2018, and will not accrue interest.

90

New Accounting Standards

For a discussion of new accounting standards 

and their expected impact on our consolidated 
financial statements or disclosures, please read 
Note 1, Summary of Significant Accounting Policies, to 
our consolidated financial statements included in this 
report.

Item 7A.      Quantitative and Qualitative 
Disclosures About Market Risk

We are subject to certain risks that may affect 
our results of operations, cash flows and fair values 
of assets and liabilities, including volatility in foreign 
currency exchange rates, interest rate movements, 
pricing pressures worldwide and weak economic 
conditions in the foreign markets in which we operate. 
We manage the impact of foreign currency exchange 
rates and interest rates through various financial 
instruments, including derivative instruments such as 
foreign currency forward contracts, interest rate lock 
contracts and interest rate swap contracts. We do not 
enter into financial instruments for trading or 
speculative purposes. The counterparties to these 
contracts are major financial institutions, and there is 
no significant concentration of exposure with any one 
counterparty.

Foreign Currency Exchange Risk

Our results of operations are subject to foreign 
currency exchange rate fluctuations due to the global 
nature of our operations. We have operations or 
maintain distribution relationships in the U.S., Europe, 
Canada, Asia, and Central and South America. In 
addition, we recognize our share of pre-tax co-
promotion profits on RITUXAN in Canada. As a result, 
our consolidated financial position, results of 
operations and cash flows can be affected by market 
fluctuations in foreign currency exchange rates, 
primarily with respect to the Euro, British pound 
sterling, Canadian dollar, Swiss franc, Danish krone 
and Japanese yen.

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, 2018, 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 12 months. We do not 
engage in currency speculation. For a more detailed 
disclosure of our revenue and operating expense 
hedging program, please read Note 10, Derivative 
Instruments, to our consolidated financial statements 
included in this report.  

Our ability to mitigate the impact of 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.

91

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, 
2018 and 2017, 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 $290.0 
million and $286.0 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, 2018, a hypothetical 
adverse 10% movement would result in a hypothetical 
decrease in fair value of approximately $64.0 million. 
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 
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, 
2018 and 2017, we estimate that such hypothetical 
100 basis point adverse movement would result in a 
hypothetical loss in fair value of approximately $19.0 
million and $50.0 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 

92

of December 31, 2018 and 2017, 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 generics, 
biosimilars, prodrugs and other products approved 
under alternative regulatory pathways. Generic 
versions of drugs, biosimilars and other products 
approved under alternative 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 receive for branded products and the 
volume of branded products that we sell, which will 
negatively impact our revenues.

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. 

Credit and economic conditions in the E.U. 
continue to remain uncertain, which has, from time to 
time, led to long collection periods for our accounts 
receivable and greater collection risk in certain 
countries. 

We believe that our allowance for doubtful 

accounts was adequate as of December 31, 2018 
and 2017. 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-83 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, 2018. 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, 2018, that have materially affected, or 
are reasonably likely to materially affect, our internal 
control over financial reporting.

Management’s Annual Report on Internal Control 

over Financial Reporting

Our management is responsible for establishing 

and maintaining adequate internal control over our 
financial reporting. Internal control over financial 
reporting is defined in Rules 13a-15(f) and 15d-15(f) 
under the Securities Exchange Act as a process 
designed by, or under the supervision of, a company’s 
principal executive and principal financial officers and 
effected by a company’s board of directors, 
management and other personnel to provide 
reasonable assurance regarding the reliability of 
financial reporting and the preparation of financial 
statements for external purposes in accordance with 

93

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, 2018. 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, 2018, 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, 2018, has 
been audited by PricewaterhouseCoopers LLP, an 
independent registered public accounting firm, as 
stated in their attestation report, which is included 
herein.

Item 9B.      Other Information

None.

94

PART III

Item 10.      Directors, Executive Officers 
and Corporate Governance

The information concerning our executive 
officers is set forth under the heading Our Executive 
Officers in Item 1 of this report. The text of our code 
of business conduct, which includes the code of 
ethics that applies to our principal executive officer, 
principal financial officer, principal accounting officer 
or controller, and persons performing similar 
functions, is posted on our website, www.biogen.com, 
under the “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,” “Stock Ownership - 
Section 16(a) Beneficial Ownership Reporting 
Compliance” and “Miscellaneous - Stockholder 
Proposals” contained in the proxy statement for our 
2019 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 2019 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 2019 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 2019 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 2019 annual meeting of stockholders.

95

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-83

The exhibits listed on the Exhibit Index beginning on page 97, 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.

96

  
 
Exhibit No.
2.1†

2.2

3.1

3.2

3.3

4.1

4.2

4.3

10.1

10.2†

10.3†

10.4

10.5*

10.6*

10.7*

10.8*

10.9*

10.10*

10.11*

10.12*

EXHIBIT INDEX

Description
Asset Purchase Agreement among Biogen Idec International Holding Ltd., Elan Pharma 
International Limited and Elan Pharmaceuticals, Inc., dated as of February 5, 2013. Filed 
as Exhibit 2.1 to our Current Report on Form 8-K/A filed on February 12, 2013.
Separation Agreement between Biogen Inc. and Bioverativ Inc. dated as of January 31, 
2017. Filed as Exhibit 2.1 to our Current Report on Form 8-K filed on February 2, 2017.
Amended and Restated Certificate of Incorporation, as amended. Filed as Exhibit 3.1 to 
our Quarterly Report on Form 10-Q for the quarter ended June 30, 2012.
Certificate of Amendment to the Certificate of Incorporation. Filed as Exhibit 3.1 to our 
Current Report on Form 8-K filed on March 27, 2015.
Fourth Amended and Restated Bylaws. Filed as Exhibit 3.1 to our Current Report on Form 
8-K filed on June 9, 2017.
Reference is made to Exhibit 3.1 for a description of the rights, preferences and privileges 
of our Series A Preferred Stock and Series X Junior Participating Preferred Stock.
Indenture between Biogen Inc. and U.S. Bank National Association, dated as of September 
15, 2015. Filed as Exhibit 4.1 to our Current Report on Form 8-K filed on September 16, 
2015.
First Supplemental Indenture between Biogen Inc. and U.S. Bank National Association, 
dated September 15, 2015. Filed as Exhibit 4.2 to our Current Report on Form 8-K filed 
on September 16, 2015.
Credit Agreement between Biogen Inc., Bank of America, N.A., Goldman Sachs Bank USA 
and other lenders party thereto, dated August 28, 2015. Filed as Exhibit 10.1 to our Current 
Report on Form 8-K filed on September 1, 2015.
Second Amended and Restated Collaboration Agreement between Biogen Idec Inc. and 
Genentech, Inc., dated as of October 18, 2010. Filed as Exhibit 10.5 to our Annual Report 
on Form 10-K for the year ended December 31, 2010.
Letter  Agreement  regarding  GA101  financial  terms  between  Biogen  Idec  Inc.  and 
Genentech, Inc., dated October 18, 2010. Filed as Exhibit 10.6 to our Annual Report on 
Form 10-K for the year ended December 31, 2010.
Settlement  and  License  Agreement,  dated  January  17,  2017,  between  Biogen  Swiss 
Manufacturing GmbH, Biogen International Holdings ltd., Forward Pharma A/S and other 
parties thereto. Filed as Exhibit 10.1 to our Current Report on Form 8-K filed on February 
1, 2017.
Biogen Inc. 2017 Omnibus Equity Plan. Filed as Appendix B to our Definitive Proxy Statement 
on Schedule 14A filed on April 26, 2017.
Form of restricted stock unit award agreement under the Biogen Inc. 2017 Omnibus Equity 
Plan. Filed as Exhibit 10.2 to our Quarterly Report on Form 10-Q for the quarter ended 
June 30, 2017.
Form of market stock unit award agreement under the Biogen Inc. 2017 Omnibus Equity 
Plan. Filed as Exhibit 10.3 to our Quarterly Report on Form 10-Q for the quarter ended 
June 30, 2017.
Form of performance unit award agreement under the Biogen Inc. 2017 Omnibus Equity 
Plan. Filed as Exhibit 10.4 to our Quarterly Report on Form 10-Q for the quarter ended 
June 30, 2017.
Form  of  cash-settled  performance  unit  award  agreement  under  the  Biogen  Inc.  2017 
Omnibus Equity Plan. Filed as Exhibit 10.5 to our Quarterly Report on Form 10-Q for the 
quarter ended June 30, 2017.
Form of performance stock units award agreement (cash-settled) under the Biogen Inc. 
2017 Omnibus Equity Plan. 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.
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.

97

  
  
  
  
  
  
  
  
  
  
  
  
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 (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.
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 Idec Inc. Voluntary Executive Supplemental Savings Plan, as amended and restated 
effective January 1, 2004. Filed as Exhibit 10.13 to our Annual Report on Form 10-K for 
the year ended December 31, 2003.
Biogen Idec Inc. Supplemental Savings Plan, as amended. Filed as Exhibit 10.23 to our 
Annual Report on Form 10-K for the year ended December 31, 2015.
Biogen Idec Inc. Voluntary Board of Directors Savings Plan, as amended. Filed as Exhibit 
10.24 to our Annual Report on Form 10-K for the year ended December 31, 2015.
Biogen Idec Inc. Executive Severance Policy - U.S. Executive Vice President, as amended 
effective January 1, 2014. Filed as Exhibit 10.39 to our Annual Report on Form 10-K for 
the year ended December 31, 2013.
Biogen Idec Inc. Executive Severance Policy - International Executive Vice President, as 
amended effective January 1, 2014. Filed as Exhibit 10.40 to our Annual Report on Form 
10-K for the year ended December 31, 2013.
Biogen  Idec  Inc.  Executive  Severance  Policy  -  U.S.  Senior  Vice  President,  as  amended 
effective October 13, 2008. Filed as Exhibit 10.53 to our Annual Report on Form 10-K for 
the year ended December 31, 2008.
Biogen  Idec  Inc.  Executive  Severance  Policy  -  International  Senior  Vice  President,  as 
amended effective October 13, 2008. Filed as Exhibit 10.54 to our Annual Report on Form 
10-K for the year ended December 31, 2008.
Annual Retainer Summary for Board of Directors.
Form of indemnification agreement for directors and executive officers. Filed as Exhibit 
10.1 to our Current Report on Form 8-K filed on June 7, 2011.
Employment Agreement between Biogen Inc. and Michel Vounatsos dated December 18, 
2016 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.

98

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Exhibit No.
10.35*

10.36*

10.37*

10.38*

10.39*

10.40*

10.41*

21+
23+
31.1+

31.2+

32.1++

101++

Description
Letter  regarding  employment  arrangement  of  Gregory  Covino  dated  February  25,  2012. 
Filed as Exhibit 10.32 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.
Employment Agreement between Biogen Idec. Inc. and George A. Scangos amended as of 
August 23, 2013. Filed as Exhibit 10.1 to our Current Report on Form 8-K filed on August 
26, 2013.
Letter regarding employment arrangement of Paul J. Clancy dated August 17, 2007. Filed 
as Exhibit 10.49 to our Annual Report on Form 10-K for the year ended December 31, 2007.
Letter regarding employment arrangement of Kenneth DiPietro dated December 12, 2011. 
Filed as Exhibit 10.49 to our Annual Report on Form 10-K for the year ended December 31, 
2012.
Subsidiaries. 
Consent of PricewaterhouseCoopers LLP, an Independent Registered Public Accounting Firm.
Certification of the Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley 
Act of 2002.
Certification of the Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley 
Act of 2002.
Certification of the Chief Executive Officer and the Chief Financial Officer pursuant to Section 
906 of the Sarbanes-Oxley Act of 2002.
The following materials from Biogen Inc.’s Annual Report on Form 10-K for the year ended 
December 31, 2018, formatted in XBRL (Extensible Business Reporting Language): (i) the 
Consolidated Statements of Income, (ii) the Consolidated Statements of Comprehensive 
Income, (iii) the Consolidated Balance Sheets, (iv) the Consolidated Statements of Cash 
Flows, (v) the Consolidated Statements of Equity and (vi) Notes to Consolidated Financial 
Statements.

^

*

†

+

References  to  “our”  filings  mean  filings  made  by  Biogen  Inc.  and  filings  made  by  IDEC  Pharmaceuticals 
Corporation prior to the merger with Biogen, Inc. Unless otherwise indicated exhibits were previously filed with 
the SEC under Commission File Number 0-19311 and are incorporated herein by reference.

Management contract or compensatory plan or arrangement.

Confidential treatment has been granted or requested with respect to portions of this exhibit.

Filed herewith.

+ +

Furnished herewith.

99

  
  
  
  
  
  
  
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, 2019 

100

 
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/    NANCY L. LEAMING
Nancy L. Leaming

/S/    RICHARD C. MULLIGAN
Richard C. Mulligan

/S/    ROBERT W. PANGIA
Robert W. Pangia

/S/    BRIAN S. POSNER
Brian S. Posner

/S/    ERIC K. ROWINSKY
Eric K. Rowinsky

/S/    LYNN SCHENK
Lynn Schenk

/S/    STEPHEN A. SHERWIN
Stephen A. Sherwin

Director and Chief Executive Officer
(principal executive officer)

February 6, 2019

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

February 6, 2019

Vice President, Chief Accounting
Officer (principal accounting officer)

February 6, 2019

   Director and Chairman of the Board of

Directors

February 6, 2019

Director

February 6, 2019

Director

February 6, 2019

Director

February 6, 2019

Director

February 6, 2019

Director

February 6, 2019

Director

February 6, 2019

Director

February 6, 2019

Director

February 6, 2019

Director

February 6, 2019

101

  
 
  
 
  
 
 
  
 
  
 
  
 
  
 
  
 
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-83

F- 1

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

Revenues:

Product, net ........................................................................ $
Revenues from anti-CD20 therapeutic programs ....................
Other..................................................................................
Total revenues ................................................................

10,886.8 $

10,354.7 $

1,980.2
585.9
13,452.9

1,559.2
360.0
12,273.9

9,817.9
1,314.5
316.4
11,448.8

For the Years Ended December 31,

2018

2017

2016

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 .........................................
Acquired in-process research and development .....................
Restructuring charges..........................................................
(Gain) loss on fair value remeasurement of contingent
consideration ......................................................................
TECFIDERA litigation settlement charge.................................
Total cost and expenses ..................................................
Income from operations .........................................................
Other income (expense), net ..................................................
Income before income tax expense and equity in loss of
investee, net of tax................................................................

Income tax expense ..............................................................
Equity in loss of investee, net of tax .......................................
Net income ...........................................................................
Net income (loss) attributable to noncontrolling interests, net
of tax ...................................................................................
Net income attributable to Biogen Inc. .................................... $
Net income per share:

1,816.3
2,597.2
2,106.3
747.3
185.0
112.5
12.0

(12.3)
—
7,564.3
5,888.6
11.0

5,899.6
1,425.6
—
4,474.0

1,630.0
2,253.6
1,933.9
814.7
112.3
120.0
0.9

62.7
—
6,928.1
5,345.8
(217.0)

5,128.8
2,458.7
—
2,670.1

1,478.7
1,973.3
1,946.6
385.6
10.2
—
33.1

14.8
454.8
6,297.1
5,151.7
(218.7)

4,933.0
1,237.3
—
3,695.7

43.3
4,430.7 $

131.0
2,539.1 $

(7.1)
3,702.8

Basic earnings per share attributable to Biogen Inc. .............. $
Diluted earnings per share attributable to Biogen Inc. ............ $

21.63 $
21.58 $

11.94 $
11.92 $

Weighted-average shares used in calculating:

Basic earnings per share attributable to Biogen Inc. ..............
Diluted earnings per share attributable to Biogen Inc. ............

204.9
205.3

212.6
213.0

16.96
16.93

218.4
218.8

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.

$

4,430.7 $

2,539.1 $

3,702.8

For the Years Ended December 31,

2018

2017

2016

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.................
Comprehensive income attributable to Biogen Inc....................
Comprehensive income (loss) attributable to noncontrolling
interests, net of tax ...............................................................
Comprehensive income ......................................................... $

(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

(10.6)

0.6

(10.0)

51.6

(4.0)
47.6

—

—
—

5.1

(138.6)

(95.9)

4,507.2

2,540.6

3,606.9

42.9

131.0

(7.1)

4,550.1 $

2,671.6 $

3,599.8

See accompanying notes to these consolidated financial statements.

F- 3

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

As of December 31,

2018

2017

ASSETS

Current assets:

Cash and cash equivalents ........................................................................ $
Marketable securities ................................................................................
Accounts receivable, net ............................................................................
Due from anti-CD20 therapeutic programs...................................................
Inventory ..................................................................................................
Other current assets .................................................................................
Total current assets...............................................................................
Marketable securities ..................................................................................
Property, plant and equipment, net ...............................................................
Intangible assets, net ..................................................................................
Goodwill .....................................................................................................
Deferred tax asset ......................................................................................
Investments and other assets ......................................................................

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

Total assets.......................................................................................... $

25,288.9 $

LIABILITIES AND EQUITY

Current liabilities:

Current portion of notes payable ................................................................ $
Taxes payable ...........................................................................................
Accounts payable ......................................................................................
Accrued expenses and other ......................................................................
Total current liabilities ...........................................................................
Notes payable .............................................................................................
Deferred tax liability.....................................................................................
Other long-term liabilities .............................................................................
Total liabilities.......................................................................................

Commitments and contingencies
Equity:
Biogen Inc. shareholders’ equity

Preferred stock, par value $0.001 per share ...............................................
Common stock, par value $0.0005 per share..............................................
Additional paid-in capital ............................................................................
Accumulated other comprehensive loss ......................................................
Retained earnings .....................................................................................
Treasury stock, at cost; 23.8 million and 23.8 million shares, respectively ....
Total Biogen Inc. shareholders’ equity .....................................................
Noncontrolling interests ...............................................................................
Total equity ...........................................................................................
Total liabilities and equity....................................................................... $

— $

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 $

1,573.8
2,115.2
1,787.0
532.6
902.7
962.0
7,873.3
3,057.3
3,182.4
3,879.6
4,632.5
595.9
431.6
23,652.6

3.2
68.2
395.5
2,901.3
3,368.2
5,935.0
122.6
1,628.7
11,054.5

—
0.1
97.8
(318.4)
15,810.4
(2,977.1)
12,612.8
(14.7)
12,598.1
23,652.6

See accompanying notes to these consolidated financial statements.
F- 4

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

Cash flows from operating activities:

Net income ...................................................................................... $
Adjustments to reconcile net income to net cash flows from operating
activities:

Depreciation, amortization and impairments ...................................
Acquired in-process research and development...............................
Share-based compensation ...........................................................
Deferred income taxes ..................................................................
Contingent consideration ..............................................................
Other ...........................................................................................
Changes in operating assets and liabilities, net: .............................
Accounts receivable ..................................................................
Due from anti-CD20 therapeutic programs ..................................
Inventory..................................................................................
Other assets ............................................................................
Accrued expenses and other current liabilities ............................
Income tax assets and liabilities................................................
Other liabilities .........................................................................
Net cash flows provided by operating activities .........................

Cash flows from investing activities:

Proceeds from sales and maturities of marketable securities...............
Purchases of marketable securities ...................................................
Contingent consideration related to Fumapharm AG acquisition............
Acquired in-process research and development...................................
Purchases of property, plant and equipment .......................................
Acquisitions of intangible assets .......................................................
Purchase of Ionis Pharmaceuticals, Inc. stock ....................................
Investment in Samsung Bioepis.........................................................
Other ...............................................................................................
Net cash flows used in investing activities................................

Cash flows from financing activities:

For the Years Ended December 31,

2018

2017

2016

4,474.0 $

2,670.1 $

3,695.7

1,016.6
112.5
157.5
108.3
(12.3)
(69.1)

(205.2)
5.7
(52.1)
(119.1)
465.5
321.7
(16.3)
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)
(76.6)
(227.4)
1,303.9
(2.4)
4,551.0

5,565.9
(5,355.2)
(1,200.0)
(120.0)
(867.4)
(975.4)
—
—
(11.0)
(2,963.1)

682.7
—
154.8
(175.0)
14.8
89.0

(241.4)
13.9
(165.6)
59.1
622.3
(232.6)
69.5
4,587.2

7,378.9
(7,913.2)
(1,200.0)
—
(616.1)
(111.6)
—
—
(22.8)
(2,484.8)

Purchases of treasury stock ..............................................................
Payments related to issuance of stock for share-based compensation
arrangements, net ............................................................................
Net distribution to noncontrolling interest ...........................................
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.......................................... $

(4,352.6)

(1,365.4)

(1,000.0)

(2.1)
(36.4)
(3.2)
—
(58.2)
(19.5)
(4,472.0)
(330.6)
(18.6)
1,573.8
1,224.6 $

(5.3)
(134.1)
(560.9)
(302.7)
(3.0)
(8.6)
(2,380.0)
(792.1)
39.4
2,326.5
1,573.8 $

(8.5)
—
(2.7)
—
(38.6)
(2.8)
(1,052.6)
1,049.8
(31.3)
1,308.0
2,326.5

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, including in our core 
growth areas of multiple sclerosis (MS) and neuroimmunology, Alzheimer’s disease (AD) and dementia, movement 
disorders, including Parkinson's disease, and neuromuscular disorders, including spinal muscular atrophy (SMA) and 
amyotrophic lateral sclerosis (ALS). We are also focused on discovering, developing and delivering worldwide 
innovative therapies in our emerging growth areas of acute neurology, neurocognitive disorders, pain and 
ophthalmology. In addition, we are employing innovative technologies to discover potential treatments for rare and 
genetic disorders, including new ways of treating diseases through gene therapy in our core and emerging growth 
areas. We also manufacture and commercialize biosimilars of advanced biologics.

Our marketed products include TECFIDERA, AVONEX, PLEGRIDY, TYSABRI 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 19, Collaborative and Other Relationships, to these 
consolidated financial statements.

We support our drug discovery and development efforts through the commitment of significant resources to 

discovery, research and development programs and business development opportunities. 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 are also applying our scientific expertise to solve some of the most challenging and complex diseases, 
including AD, progressive supranuclear palsy (PSP), Parkinson's disease, ALS, stroke, epilepsy, cognitive impairment 
associated with schizophrenia (CIAS) and pain.

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

that expand access to medicines and reduce the cost burden for healthcare systems. We are leveraging our 
manufacturing capabilities and know-how to develop, manufacture and market biosimilar products through Samsung 
Bioepis Co., Ltd. (Samsung Bioepis), our joint venture with Samsung BioLogics Co., Ltd. (Samsung BioLogics). Under 
our commercial agreement, we market and sell BENEPALI, an etanercept biosimilar referencing ENBREL, FLIXABI, an 
infliximab biosimilar referencing REMICADE, and IMRALDI, an adalimumab biosimilar referencing HUMIRA, in the 
European Union (E.U.). For additional information on our collaboration arrangement with Samsung Bioepis, please 
read Note 19, Collaborative and Other Relationships, to these consolidated financial statements.

Hemophilia Spin-Off

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

independent, publicly traded company. Our consolidated results of operations and financial position included in these 
audited consolidated financial statements reflect the financial results of our hemophilia business for all periods 
through January 31, 2017.

For additional information on the spin-off of our hemophilia business, please read Note 3, Hemophilia Spin-

Off, to these consolidated financial statements.

F- 9

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

Consolidation

Our consolidated financial statements reflect our financial statements, those of our wholly-owned subsidiaries 
and those of certain variable interest entities where we are the primary beneficiary. For consolidated entities where 
we own or are exposed to less than 100% of the economics, we record net income (loss) attributable to 
noncontrolling interests in our consolidated statements of income equal to the percentage of the economic or 
ownership interest retained in such entities by the respective noncontrolling parties. Intercompany balances and 
transactions are eliminated in consolidation. 

In determining whether we are the primary beneficiary of an entity, we apply a qualitative approach that 
determines whether we have both (1) the power to direct the economically significant activities of the entity and (2) 
the obligation to absorb losses of, or the right to receive benefits from, the entity that could potentially be significant 
to that entity. These considerations impact the way we account for our existing collaborative relationships and other 
arrangements. We continuously assess whether we are the primary beneficiary of a variable interest entity as 
changes to existing relationships or future transactions may result in us consolidating or deconsolidating one or 
more of our collaborators or partners.

Use of Estimates

The preparation of our consolidated financial statements requires us to make estimates, judgments and 
assumptions that may affect the reported amounts of assets, liabilities, equity, revenues and expenses and related 
disclosure of contingent assets and liabilities. On an 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.

The FASB subsequently issued the following amendments to ASU 2014-09 that have the same effective date 

and transition date: ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent 
Considerations; ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance 
Obligations and Licensing; ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope 
Improvements and Practical Expedients; and ASU No. 2016-20, Technical Corrections and Improvements to Topic 606, 
Revenue from Contracts with Customers. We adopted these amendments with ASU 2014-09 (collectively, the new 
revenue standards).

The new revenue standards became effective for us on January 1, 2018, and were adopted using the modified 

retrospective method. The adoption of the new revenue standards as of January 1, 2018, did not change our revenue 
recognition as the majority of our revenues continue to be recognized when the customer takes control of our 
product. As we did not identify any accounting changes that impacted the amount of reported revenues with respect 
to our product revenues, revenues from anti-CD20 therapeutic programs or other revenues, no adjustment to 
retained earnings was required upon adoption. However, the adoption of the new revenue standards will result in a 
change in the timing of revenue recognition related to certain of our contract manufacturing activities based upon the 
terms of the underlying agreements.

Under the new revenue standards, 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 ASU 2014-09: (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.

As a result of the new revenue standards, other corporate revenue was higher by $75.8 million and cost of 
sales, excluding amortization and impairment of acquired intangible assets was higher by $42.4 million for the year 
ended December 31, 2018, compared to what would have been reported under the previous revenue guidance, 

F- 10

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

primarily due to the earlier recognition of revenue associated with our contract manufacturing agreements. Under the 
previous revenue guidance, these amounts would have been recognized in future periods upon shipment. The 
adoption of the new revenue standards did not have a material impact on any other balances within our consolidated 
financial statements as of and for the year ended December 31, 2018.

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.

Revenues from product sales 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

Revenues from product sales 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.

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 

F- 11

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

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-US pharmaceutical taxes or applicable allowances primarily relate to 
mandatory rebates and discounts in international markets where government-sponsored healthcare 
systems are the primary payors for healthcare.

Product returns are established for returns expected to be made by wholesalers and are recorded in the period 
the related revenue is recognized, resulting in a reduction to product 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 
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 Accounting Standards Codification (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 

F- 12

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

expenses incurred by Genentech, the Roche Group and us. Our share of the pre-tax profits on RITUXAN and GAZYVA 
in the U.S. and pre-tax co-promotion profits on RITUXAN in Canada include estimates that are based on information 
received from Genentech. These estimates are subject to change and actual results may differ. 

For additional information on our relationship with Genentech, please read Note 19, Collaborative and Other 

Relationships, to these consolidated financial statements. 

Other Revenues

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 AbbVie Inc. (AbbVie), 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 AbbVie, Genentech and Samsung Bioepis, 

please read Note 19, Collaborative and Other Relationships, to these consolidated financial statements.

Royalty Revenues

We receive royalty revenues on sales by our licensees of other products covered under patents that we own. We 

do not have future performance obligations under these license arrangements. We record these revenues based on 
estimates of the sales that occurred during the relevant period as a component of other revenues. The relevant 
period estimates of sales are based on interim data provided by licensees and analysis of historical royalties that 
have been paid to us, adjusted for any changes in facts and circumstances, as appropriate. Differences between 
actual and estimated royalty revenues are adjusted for in the period in which they become known, typically the 
following quarter. Historically, adjustments have not been material when compared to actual amounts paid by 
licensees. 

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. 

F- 13

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

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, 2018 and 2017.

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, 2018 and 2017, 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 
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 trade receivables for estimated losses that may result from a customer's inability 

to pay. Amounts determined to be uncollectible are charged or written-off against the reserve.

The adoption of the new revenue standards did not change our historical accounting methods for our accounts 

receivable.

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 

F- 14

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

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 Investments for Other-than-Temporary Impairments

We conduct periodic reviews to identify and evaluate each investment that has an unrealized loss, in 
accordance with the meaning of other-than-temporary impairment and its application to certain investments. An 
unrealized loss exists when the current fair value of an individual security is less than its amortized cost basis. 
Unrealized losses on available-for-sale 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 

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

and other relevant factors such as the presence of a collaborative or other business relationship. Under the equity 
method of accounting, we record in our results of operations our share of income or loss of the other company. If our 
share of losses exceeds the carrying value of our investment, we will suspend recognizing additional losses and will 
continue to do so unless we commit to providing additional funding. 

Inventory

Inventories are stated at the lower of cost or 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

We periodically review our inventories for excess or obsolescence and write-down obsolete or otherwise 

unmarketable inventory to its estimated net realizable value. If the actual net realizable value is less than that 
estimated by us, or if it is determined that inventory utilization will further diminish based on estimates of demand, 
additional inventory write-downs may be required. Additionally, our products are subject to strict quality control and 
monitoring that we perform throughout the manufacturing process. In the event that certain batches or units of 
product no longer meet quality specifications, we will record a charge to cost of sales to write-down any 
unmarketable inventory to its estimated net realizable value. In all cases, product inventory is carried at the lower of 
cost or its estimated net realizable value. Amounts written-down due to unmarketable inventory are charged to cost 
of sales.

Property, Plant and Equipment

Property, plant and equipment are carried at cost, subject to review for impairment whenever events or changes 

in circumstances indicate that the carrying amount of the asset may not be recoverable. The cost of normal, 
recurring, or periodic repairs and maintenance activities related to property, plant and equipment are expensed as 
incurred. The cost for planned major maintenance activities, including the related acquisition or construction of 
assets, is capitalized if the repair will result in future economic benefits.

Interest costs incurred during the construction of major capital projects are capitalized until the underlying 
asset is ready for its intended use, at which point the interest costs are amortized as depreciation expense over the 
life of the underlying asset. We also capitalize certain direct and incremental costs associated with the validation 
effort required for licensing by regulatory agencies of new manufacturing equipment for the production of a 
commercially approved drug. These costs primarily include direct labor and material and are incurred in preparing the 
equipment for its intended use. The validation costs are either amortized over the life of the related equipment or 
expensed as cost of sales when the product produced in the validation process is sold.

In addition, we capitalize certain internal use computer software development costs. If the software is an 

integral part of production assets, these costs are included in machinery and equipment and are amortized on a 

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

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.

Intangible Assets

Our intangible assets consist of acquired and in-licensed rights and patents, developed technology, out-licensed 

patents, in-process research and development acquired after January 1, 2009, trademarks and trade names. Our 
intangible assets are recorded at fair value at the time of their acquisition and are stated in our consolidated 
balance sheets net of accumulated amortization and impairments, if applicable.

Intangible assets related to acquired and in-licensed rights and patents, developed technology and out-licensed 
patents are amortized over their estimated useful lives using the economic consumption method if anticipated future 
revenues can be reasonably estimated. The straight-line method is used when revenues cannot be reasonably 
estimated. Amortization is recorded 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 includes our U.S. and rest of world licenses to Forward Pharma A/S' (Forward Pharma) intellectual 
property, including Forward Pharma's intellectual property related to TECFIDERA, and 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 
and TECFIDERA 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 our TYSABRI, AVONEX, 
SPINRAZA and TECFIDERA 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 and TECFIDERA products.

Intangible assets related to trademarks, trade names and in-process research and development prior to 
commercialization are not amortized because they have indefinite lives; however, they are subject to review for 
impairment. We review our intangible assets with indefinite lives for impairment annually, as of October 31, and 
whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable.

Acquired In-process Research and Development (IPR&D)

Acquired IPR&D represents the fair value assigned to research and development assets that have not reached 
technological feasibility. The value assigned to acquired IPR&D is determined by estimating the costs to develop the 
acquired technology into commercially viable products, estimating the resulting 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 

F- 17

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

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 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 reviewed for impairment. Goodwill is reviewed annually, as of October 31, and whenever events or changes in 
circumstances indicate that the carrying value of the goodwill 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 25, 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.

Contingent Consideration

The consideration for our acquisitions often includes future payments that are contingent upon the occurrence 

of a particular event or events. For acquisitions completed before January 1, 2009, we record contingent 
consideration resulting from a business combination when the contingency is resolved. For acquisitions of a 
business completed after January 1, 2009, we record an obligation for such contingent payments at fair value on the 
acquisition date. We estimate the fair value of contingent consideration obligations through valuation models that 
incorporate probability-adjusted assumptions related to the achievement of the milestones and thus likelihood of 
making related payments. We revalue our contingent consideration obligations each reporting period. Changes in the 
fair value of our contingent consideration obligations are recognized in our consolidated statements of income. 
Changes in the fair value of the contingent consideration obligations can result from changes to one or multiple 
inputs, including adjustments to the discount rates, changes in the amount or timing of expected expenditures 
associated with product development, changes in the amount or timing of cash flows and reserves associated with 
products upon commercialization, changes in the assumed achievement or timing of any cumulative sales-based and 
development milestones, changes in the probability of certain clinical events and changes in the assumed probability 
associated with regulatory approval. 

Discount rates in our valuation models represent a measure of the credit risk associated with settling the 
liability. The period over which we discount our contingent obligations is based on the current development stage of 

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

the product candidates, our specific development plan for that product candidate adjusted for the probability of 
completing the development step and when the contingent payments would be triggered. In estimating the probability 
of success, we utilize data regarding similar milestone events from several sources, including industry studies and 
our own experience. These fair value measurements are based on significant inputs not observable in the market. 
Significant judgment is employed in determining the appropriateness of these assumptions as of the acquisition 
date and for each subsequent period. Accordingly, changes in assumptions could have a material impact on the 
amount of contingent consideration expense we record in any given period.

Derivative Instruments and Hedging Activities

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 10, 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 
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 
F- 19

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

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). We charge the estimated 
fair value of awards against income over the requisite service period, which is generally the vesting period. Where 
awards are made with non-substantive vesting periods (for instance, where a portion of the award vests upon 
retirement eligibility), we estimate and recognize expense based on the period from the grant date to the date the 
employee becomes retirement eligible.

The fair values of our stock option grants are estimated as of the date of grant using a Black-Scholes option 

valuation model. The estimated fair values of the stock options are then expensed over the options’ vesting periods.

The fair values of our MSUs are estimated using a lattice model with a Monte Carlo simulation. We apply an 

accelerated attribution method to recognize share-based compensation expense over the applicable service period, 
net of estimated forfeitures when accounting for our MSUs. The probability of actual shares expected to be earned is 
considered in the grant date valuation, therefore the expense is not adjusted to reflect the actual units earned.

The fair values of our RSUs are based on the market value of our stock on the date of grant. Compensation 

expense, net of forfeitures, for RSUs is recognized straight-line over the applicable service period.

We apply an accelerated attribution method to recognize share-based compensation expense when accounting 
for our CSPUs, 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 associated targeted payout level that is forecasted 
will be achieved, net of estimated forfeitures. Cumulative adjustments are recorded each quarter to reflect changes 
in the stock price and estimated outcome of the performance-related conditions until the date results are 
determined and settled.

The fair values of PSUs that settle in stock are based upon the stock price on the date of grant and the number 

of units expected to be earned after assessing the probability that certain performance criteria will be met and the 
associated targeted payout level that is forecasted will be achieved, net of estimated forfeitures. Cumulative 
adjustments are recorded each quarter to reflect the estimated outcome of the performance-related conditions until 
the date results are determined and settled.

The purchase price of common stock under our ESPP is equal to 85% of the lesser of (i) the fair market value 

per share of the common stock on the first business day of an offering period and (ii) the fair market value per share 
of the common stock on the purchase date. The fair value of the discounted purchases made under our ESPP is 
calculated using the Black-Scholes valuation model. The fair value of the look-back provision plus the 15% discount 
is recognized as compensation expense over the 90-day purchase period. 

Research and Development Expenses

Research and development expenses consist of upfront fees and milestones paid to collaborators and 
expenses incurred in performing research and development activities, which include compensation and benefits, 
facilities and overhead expenses, clinical trial expenses and fees paid to contract research organizations (CROs), 
clinical supply and manufacturing expenses, write-offs of inventory that was previously capitalized in anticipation of 
product launch and determined to no longer be realizable and other outside expenses. Research and development 
expenses are expensed as incurred. Payments we make for research and development services prior to the services 
being rendered are recorded as prepaid assets in our consolidated balance sheets and are expensed as the 
services are provided. We also accrue the costs of ongoing clinical trials associated with programs that have been 

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

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 19, Collaborative and Other 
Relationships, to these consolidated financial statements. Because an initial indication has been approved for both 
RITUXAN and GAZYVA, expenses incurred by Genentech in the ongoing development of RITUXAN and GAZYVA are not 
recorded as research and development expense, but rather reduce our share of profits recorded as a component of 
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, 2018, 2017 and 2016, 

advertising costs totaled $90.2 million, $75.2 million and $106.3 million, respectively.

Income Taxes

The provision for income taxes includes federal, state, local and foreign taxes. Income taxes are accounted for 

under the liability method. Deferred tax assets and liabilities are recognized for the estimated future tax 
consequences of temporary differences between the financial statement carrying amounts and their respective tax 
bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income 
in the year in which the temporary differences are expected to be recovered or settled. We evaluate the realizability 
of our deferred tax assets and establish a valuation allowance when it is more likely than not that all or a portion of 
deferred tax assets will not be realized. In December 2018 we elected to recognize deferred taxes associated with 
our global intangible low-taxed income (GILTI) tax calculations.

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 transfers of assets other than 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 asset is transferred.

We account for uncertain tax positions using a “more-likely-than-not” threshold for recognizing and resolving 

uncertain tax positions. We evaluate uncertain tax positions on a quarterly basis and consider various factors 
including, but not limited to, changes in tax law, the measurement of tax positions taken or expected to be taken in 
tax returns, the effective settlement of matters subject to audit, information obtained during in process audit 
activities and changes in facts or circumstances related to a tax position. We also accrue for potential interest and 
penalties related to unrecognized tax benefits in income tax expense.

Contingencies

We are currently involved in various claims and legal proceedings. Loss contingency provisions are recorded if 

the potential loss from any claim, asserted or unasserted, or legal proceeding is considered probable and the 
amount can be reasonably estimated or a range of loss can be determined. These accruals represent management’s 
best estimate of probable loss. Disclosure also is provided when it is reasonably possible that a loss will be incurred 
or when it is reasonably possible that the amount of a loss will exceed the recorded provision. On a quarterly basis, 
we review the status of each significant matter and assess its potential financial exposure. Significant judgment is 
required in both the determination of probability and the determination as to whether an exposure is reasonably 
estimable. Because of uncertainties related to these matters, accruals are based only on the best information 
available at the time. As additional information becomes available, we reassess the potential liability related to 
pending claims and litigation and may change our estimates. These changes in the estimates of the potential 
liabilities could have a material impact on our consolidated results of operations and financial position.

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

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. 

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.

Revenue recognition

In May 2014 the FASB issued ASU 2014-09, which supersedes all existing revenue recognition requirements, 
including most industry specific guidance. This standard requires a company to recognize revenue when it transfers 
goods or services to customers in an amount that reflects the consideration that the company expects to receive for 
those goods or services. For additional information on the adoption of the new revenue standards, please read the 
section titled Revenue Recognition above, and Note 5, Revenues, to these consolidated financial statements.

Financial Instruments

In January 2016 the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): 

Recognition and Measurement of Financial Assets and Financial Liabilities. This standard amends certain aspects of 
accounting and disclosure requirements for financial instruments, including the requirement that equity investments 
with readily determinable fair values are to be measured at fair value with any changes in fair value recognized in a 
company's results of operations. This standard does not apply to investments accounted for under the equity 
method of accounting or those investments that result in consolidation of the investee. Equity investments that do 
not have readily determinable fair values may be measured at fair value or at cost minus impairment adjusted for 
changes in observable prices. A financial liability that is measured at fair value in accordance with the fair value 
option is required to be presented separately in other comprehensive income for the portion of the total change in 
the fair value resulting from change in the instrument-specific credit risk. In addition, a valuation allowance should be 
evaluated on deferred tax assets related to available-for-sale debt securities in combination with other deferred tax 
assets. 

We adopted this standard on January 1, 2018, using the modified retrospective method, and recognized a $1.3 

million net increase to retained earnings as well as a $1.5 million increase to accumulated other comprehensive 
income reflecting the cumulative impact for the accounting changes made upon adoption. The adoption of this 
standard resulted in a change in the income statement classification with respect to where we recognize changes in 
fair value related to certain equity security investments. Prior to the adoption of ASU 2016-01, we recognized 
changes in fair value in accumulated other comprehensive income (loss), net. Upon the adoption of ASU 2016-01, 
we recognize changes in fair value in other income (expense), net. During the year ended December 31, 2018, we 
recognized net gains resulting from changes in fair value related to our equity security investments in other income 
(expense), net totaling approximately $128.0 million under this standard that would not have been recognized in 
other income (expense), net under the previous standard. 

Leasing

In February 2016 the FASB issued ASU No. 2016-02, Leases (Topic 842). This standard established a right-of-
use model that requires all lessees to recognize right-of-use assets and liabilities on their balance sheet that arise 
from leases with terms longer than 12 months as well as provide disclosures with respect to certain qualitative and 
quantitative information related to their leasing arrangements. This standard became effective for us on January 1, 
2019. 

The FASB has subsequently issued the following amendments to ASU 2016-02, which have the same effective 

date and transition date of January 1, 2019, and which we collectively refer to as the new leasing standards: 

•  ASU No. 2018-01, Leases (Topic 842): Land Easement Practical Expedient for Transition to Topic 842, which 
permits an entity to elect an optional transition practical expedient to not evaluate under Topic 842 land 
easements that exist or expired prior to adoption of Topic 842 and that were not previously accounted for 
as leases under the prior standard, ASC 840, Leases.

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

•  ASU No. 2018-10, Codification Improvements to Topic 842, Leases, which amends certain narrow aspects of 

the guidance issued in ASU 2016-02.

•  ASU No. 2018-11, Leases (Topic 842): Targeted Improvements, which allows for a transition approach to 
initially apply ASU 2016-02 at the adoption date and recognize a cumulative-effect adjustment to the 
opening balance of retained earnings in the period of adoption as well as an additional practical expedient 
for lessors to not separate non-lease components from the associated lease component.

•  ASU No. 2018-20, Narrow-Scope Improvements for Lessors, which contains certain narrow scope 

improvements to the guidance issued in ASU 2016-02.

We adopted the new leasing standards on January 1, 2019, using a modified retrospective transition approach 

to be applied to leases existing as of, or entered into after, January 1, 2019. We have reviewed our existing lease 
contracts and the impact of the new leasing standards on our consolidated results of operations, financial position 
and disclosures. Upon adoption of the new leasing standards, we expect to recognize a lease liability and related 
right-of-use asset on our consolidated balance sheet of approximately $0.5 billion. The impact of adoption of the new 
leasing standards will have an immaterial impact to our consolidated statements of income. 

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. This standard requires 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, this standard now 
requires allowances to be recorded instead of reducing the amortized cost of the investment. This standard will be 
effective for us on January 1, 2020. We are currently evaluating the potential impact that this standard may have on 
our consolidated financial position and results of operations.

Income Taxes

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 our 
retained earnings as these differences are related to inter-entity transactions. We will recognize incremental deferred 
income tax expense thereafter as these deferred tax assets and liabilities are utilized.

For additional information on our income taxes, please read Note 17, Income Taxes, to these consolidated 

financial statements.

Net Periodic Pension Cost

In March 2017 the FASB issued ASU No. 2017-07, Compensation - Retirement Benefits (Topic 715): Improving 
the Presentation of Net Periodic Pension Costs and Net Periodic Postretirement Benefit Cost. This standard requires 
that an employer disaggregate the service cost component from the other components of net benefit cost. This 
standard also provides explicit guidance on how to present the service cost component and the other components of 
net benefit cost in the statements of income and allows only the service cost component of net benefit cost to be 
eligible for capitalization. The other components of the net periodic benefit cost must be presented separately from 
the line items that include service cost and outside of any subtotal of operating income on our consolidated 
statements of income. We adopted this standard on January 1, 2018, using the retrospective method. 

As a result of the adoption of this standard, the other components of net periodic benefit cost, which we 
previously presented as a component of operating income, are now classified in other income (expense), net in our 
consolidated statements of income. For the years ended December 31, 2017 and 2016, $2.5 million and $3.3 

F- 23

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

million, respectively, were reclassified from operating income to other income (expense), net in our consolidated 
statements of income to conform to our current year presentation.

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. Based upon our marketable debt securities as of December 31, 2018, the adoption of this 
standard did not result in a significant adjustment to our marketable debt securities.

Derivative Instruments and Hedging Activities

In August 2017 the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements 

to Accounting for Hedging Activities. This standard provides guidance to better align an entity's risk management 
activities and financial reporting for hedging relationships through changes to both the designation and 
measurement guidance for qualifying hedging relationships and the presentation of hedge results. This standard 
expands and refines hedge accounting for both non-financial and financial risk components and aligns the 
recognition and presentation of the effects of the hedging instrument and the hedged item in the financial 
statements. 

We adopted this standard on January 1, 2018, using the modified retrospective method, which did not have an 
impact on our financial position or results of operations; however, the adoption of this standard resulted in additional 
disclosures and a change in the income statement classification with respect to where we recognize cash flow hedge 
ineffective or excluded hedge transaction gains and losses. Prior to the adoption of ASU 2017-12 on January 1, 
2018, to the extent ineffective or excluded, cash flow hedge transaction gains and losses were reported in other 
income (expense), net. Effective January 1, 2018, we recognize all cash flow hedge reclassifications from 
accumulated other comprehensive income and fair value changes of any cash flow hedge ineffectiveness or excluded 
portions in the same line item in our consolidated statements of income that has been impacted by the hedged 
item.

Additionally, 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.

For additional information on our derivative instruments and hedging activities, please read Note 10, Derivative 

Instruments, to these consolidated financial statements.

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 will be effective for us on January 1, 2020. We do not 
expect that the adoption of this standard will have a material impact on our disclosures.

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; 

F- 24

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

•  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

•  Requires that in a transaction with a collaborative arrangement participant that is not directly related to 
sales to third parties, presenting that transaction together with revenue recognized under ASC 606 is 
precluded if the collaborative arrangement participant is not a customer. 

This standard will be effective for us on January 1, 2020; however, early adoption is permitted. 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. We are currently 
evaluating the potential impact that this standard may have on our consolidated financial position and results of 
operations.

2.      Acquisitions

BIIB100 Acquisition

In January 2018 we acquired BIIB100 (formerly known as KPT-350) from Karyopharm Therapeutics Inc. 
(Karyopharm). BIIB100 is a Phase 1 ready 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 has 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. 

BIIB104 Acquisition

In April 2018 we acquired BIIB104 (formerly known as PF-04958242) from Pfizer Inc. (Pfizer). BIIB104 is a first-

in-class, Phase 2b ready AMPA receptor potentiator for CIAS, representing our first program in neurocognitive 
disorders. 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 has 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. 

During the fourth quarter of 2018 we accrued a $10.0 million milestone payment related to the Phase 2b trial 

for BIIB104, which is included in research and development expense in our consolidated statements of income.

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 has 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 

F- 25

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

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 (formerly known as ALG-801) (Phase 1a) and ALG-802 (preclinical) 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 has 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) (formerly known as CIRARA) from Remedy Pharmaceuticals 
Inc. (Remedy). BIIB093 is a Phase 3 ready candidate 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 will share in the 

cost of development for the target indication for BIIB093 in LHI stroke.

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

nor did we acquire any significant processes required in the development of BIIB093. In connection with the closing 
of this transaction, we made an upfront payment of $120.0 million to Remedy, which was recorded as acquired 
IPR&D in our consolidated statements of income as BIIB093 has 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. 

3. 

Hemophilia Spin-Off

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

publicly traded company, which was acquired by Sanofi in March 2018. 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. The separation and distribution was structured to be tax-free for shareholders for federal income tax 
purposes. Bioverativ assumed all of our rights and obligations under our collaboration agreement with Swedish 
Orphan Biovitrum AB (Sobi) and our collaboration and license agreement with Sangamo Biosciences Inc.

Biogen and Bioverativ entered into a separation agreement and various other agreements, including a 

manufacturing and supply agreement, which govern the separation and distribution and the relationship between the 
two companies going forward. Under the separation agreement, Bioverativ is obligated to indemnify us for liabilities 
that may exist relating to its business activities, whether incurred prior to or after the distribution, including any 
pending or future litigation.

F- 26

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

In connection with the distribution we made a net cash contribution to Bioverativ, during the first quarter of 

2017, totaling $302.7 million. The following table summarizes the assets and liabilities that were charged against 
equity as a result of the spin-off of our hemophilia business:

(In millions)

Assets

Cash............................................................................................................................... $
Accounts receivable .........................................................................................................
Inventory .........................................................................................................................
Property, plant and equipment, net ....................................................................................
Intangible assets, net.......................................................................................................
Goodwill ..........................................................................................................................
Other, net ........................................................................................................................
Assets transferred, net....................................................................................................... $

Liabilities

Accrued expenses and other current liabilities ................................................................... $
Other long-term liabilities..................................................................................................
Liabilities transferred, net................................................................................................... $

302.7

144.7

116.1

20.2

56.8

314.1

53.7

1,008.3

87.8

67.7

155.5

Pursuant to the terms of our agreements with Bioverativ, upon completion of the spin-off, we distributed 

ALPROLIX and ELOCTATE on behalf of Bioverativ until Bioverativ obtained appropriate regulatory authorizations in 
certain countries, including a Biologics License Application transfer in the U.S., which was received in September 
2017. Accordingly, commencing October 2017, we ceased distribution of ALPROLIX and ELOCTATE on behalf of 
Bioverativ under this arrangement.

Under the manufacturing and supply agreement, we manufacture and supply certain products and materials to 

Bioverativ. The manufacturing and supply agreement has an initial term of five years, with a five-year extension at 
Bioverativ's sole discretion and a further five-year extension with Bioverativ's and our consent. For the years ended 
December 31, 2018 and 2017, we recognized $206.7 million and $64.8 million, respectively, in revenues in relation 
to contract manufacturing services provided to Bioverativ, which is reflected as a component of other royalty and 
corporate revenues in our consolidated statements of income. We also recorded $180.4 million and $15.1 million 
as cost of sales in relation to these services during the years ended December 31, 2018 and 2017, respectively. 
Additionally, pursuant to the terms of the manufacture and supply agreement, we expect to sell substantially all 
remaining hemophilia related inventory to Bioverativ during the first quarter of 2019, when Bioverativ will assume full 
control over its manufacturing processes. Hemophilia related inventory on hand as of December 31, 2018, totals 
approximately $180.0 million.

Amounts earned under the non-manufacturing and supply related transaction service agreements are recorded 

as a reduction of costs and expenses in their respective expense line items. These amounts, which were primarily 
reflected as a reduction to selling, general and administrative expenses in our consolidated statements of income, 
were not significant for the years ended December 31, 2018 and 2017.

Hemophilia related product revenues reflected in our consolidated statements of income for the years ended 
December 31, 2017 and 2016, totaled $74.4 million and $846.9 million, respectively. Results for the year ended 
December 31, 2017, only reflect hemophilia-related product revenues through January 31, 2017.

Patents

Prior to the spin-off of our hemophilia business, we were awarded various methods of treatment and composition 

of matter patents related to ELOCTATE and ALPROLIX. Upon completion of the spin-off, these patents were 
transferred to the patent portfolio of Bioverativ.

F- 27

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

4.      Restructuring, Business Transformation and Other Cost Saving Initiatives

2017 Corporate Strategy

In October 2017, in connection with creating a leaner and simpler operating model, we approved a corporate 

restructuring program intended to streamline our operations and reallocate resources. We expect to make total non-
recurring operating and capital expenditures of approximately $135.0 million in connection with this program and our 
goal is to redirect resources of up to $400.0 million annually by 2020 to prioritized research and development and 
other value creation opportunities.

For the years ended December 31, 2018 and 2017, we recognized charges of $22.9 million and $19.4 million, 
respectively, related to this effort, of which $12.0 million and $0.9 million, respectively, are reflected as restructuring 
charges and $10.9 million and $18.5 million, respectively, are included in selling, general and administrative 
expenses in our consolidated statements of income. These restructuring charges were primarily related to 
severance.

Restructuring charges incurred to date under this program have been substantially paid in cash as of 

December 31, 2018.

2016 Organizational Changes and Cost Saving Initiatives

2016 Restructuring Charges

During the third quarter of 2016 we initiated cost saving measures primarily intended to realign our 
organizational structure due to the changes in roles and workforce resulting from our decision to spin-off our 
hemophilia business, and to achieve further targeted cost reductions. For the year ended December 31, 2016, we 
recognized charges totaling $17.7 million related to this effort. These amounts, which were substantially incurred 
and paid by the end of 2016, were primarily related to severance and are reflected in restructuring charges in our 
consolidated statements of income.

Cambridge, MA Manufacturing Facility

In June 2016 following an evaluation of our current and future manufacturing capabilities and capacity needs, 

we decided to cease manufacturing and vacate our 67,000 square foot small-scale biologics manufacturing facility in 
Cambridge, MA and close and vacate our 46,000 square foot warehouse space in Somerville, MA.

In December 2016 we subleased our rights to the Cambridge, MA manufacturing facility to Brammer Bio 
MA, LLC (Brammer). Brammer also purchased from us certain manufacturing equipment, leasehold improvements 
and other assets in exchange for shares of Brammer common LLC interests and assumed manufacturing operations 
effective January 1, 2017. In December 2016 we closed and vacated our warehouse space in Somerville, MA.

Our departure from these facilities shortened the expected useful lives of certain leasehold improvements and 
other assets at these facilities. As a result, we recorded additional depreciation expense to reflect the assets' new 
shorter useful lives. For the year ended December 31, 2016, we recognized approximately $45.5 million of this 
additional depreciation, which was recorded as cost of sales in our consolidated statements of income.

In the fourth quarter of 2016 we also recognized charges totaling $7.4 million for severance costs related to 

certain employees separated from Biogen in connection with our departure from these facilities. These amounts 
were substantially incurred and paid by the end of first quarter of 2017 and are reflected in restructuring charges in 
our consolidated statements of income for the year ended December 31, 2016.

2015 Restructuring Charges

Restructuring charges for the year ended December 31, 2016, include $8.0 million of expense related to our 

2015 restructuring program.

F- 28

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

5.    Revenues

Product Revenues

Revenues by product are summarized as follows:

United
States

2018

Rest of
World

Total

United
States

2017

Rest of
World

Total

United
States

2016

Rest of
World

Total

For the Years Ended December 31,

(In millions)

Multiple Sclerosis
(MS):

TECFIDERA .............. $ 3,253.2
1,668.3
Interferon* ..............

$ 1,020.9
694.7

TYSABRI ..................

1,025.0

$ 4,274.1

2,363.0

1,864.0
92.7

1.4

$ 3,294.0
1,889.1

1,113.8

—

—

$

920.0

$ 4,214.0

$ 3,169.4

$

798.7

$ 3,968.1

756.7

859.3

91.6

52.7

2,645.8

1,973.1

91.6

52.7

1,980.3

1,182.9

—

—

814.9

780.9

84.9

7.8

2,795.2

1,963.8

84.9

7.8

839.0

92.7

1.4

—

—

5,946.5

2,648.7

8,595.2

6,296.9

2,680.3

8,977.2

6,332.6

2,487.2

8,819.8

FAMPYRA.................

ZINBRYTA ................

Subtotal: MS
Product Revenues..

Spinal Muscular
Atrophy:

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

854.0

870.2

1,724.2

657.0

226.7

883.7

4.6

—

4.6

Biosimilars:

BENEPALI ................

FLIXABI....................

IMRALDI ..................

Subtotal:
Biosimilar product
revenues...............

Other:

FUMADERM .............

Hemophilia:

ELOCTATE................

ALPROLIX ................

Subtotal:
Hemophilia product
revenues...............

—

—
—

—

—

—

—

—

485.2

43.2

16.7

485.2

43.2
16.7

545.1

545.1

22.3

22.3

—

—

—

—

—

—

—

—

—

—

—

370.8

370.8

9.0

—

9.0

—

379.8

379.8

39.6

39.6

—

—

—

—

—

100.6

100.6

0.1

—

0.1

—

100.7

100.7

45.9

45.9

42.2

21.0

6.2

5.0

48.4

26.0

445.2

268.0

68.0

65.7

513.2

333.7

63.2

11.2

74.4

713.2

133.7

846.9

Total product
revenues............... $ 6,800.5

$ 4,086.3

$ 10,886.8

$ 7,017.1

$ 3,337.6

$10,354.7

$ 7,050.4

$ 2,767.5

$ 9,817.9

*Interferon includes AVONEX and PLEGRIDY.

We recognized revenues from two wholesalers accounting for 32% and 18% of gross product revenues in 2018, 
34% and 21% of gross product revenues in 2017 and 35% and 22% of gross product revenues in 2016, respectively.

As of December 31, 2018, two wholesale distributors individually accounted for approximately 27.7% and 

15.6% of net accounts receivable associated with our product sales, as compared to 26.5% and 19.0% as of 
December 31, 2017.

F- 29

 
 
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)
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 ........................................................... $

(In millions)
2016
Beginning balance ....................................................... $
Current provisions relating to sales in current year.......
Adjustments relating to prior years .............................
Payments/returns relating to sales in current year .......
Payments/returns relating to sales in prior years .........
Ending balance ........................................................... $

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

Discounts

Contractual
Adjustments

Returns

Total

56.1 $

548.7 $

592.6
(1.4)
(522.5)
(53.2)
71.6 $

2,044.5
1.5
(1,576.0)
(536.0)
482.7 $

57.9 $
30.9
(16.8)
(1.0)
(19.8)
51.2 $

662.7
2,668.0
(16.7)
(2,099.5)
(609.0)
605.5

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.................................................................... $

As of December 31,

2018

2017

176.6 $
874.7
1,051.3 $

189.6
572.0
761.6

Revenues from Anti-CD20 Therapeutic Programs

Revenues from anti-CD20 therapeutic programs are summarized as follows:

(In millions)
Biogen's share of pre-tax profits in the U.S. for RITUXAN
and GAZYVA, including the reimbursement of selling and
development expenses .................................................... $
Other revenues from anti-CD20 therapeutic programs.........

For the Years Ended December 31,

2018

2017

2016

1,431.9 $

1,316.4 $

1,249.5

548.3

242.8

65.0

Total revenues from anti-CD20 therapeutic programs.... $

1,980.2 $

1,559.2 $

1,314.5

Approximately 15%, 13% and 11% of our total revenues in 2018, 2017 and 2016, respectively, are derived from 

our collaboration arrangements with Genentech. For additional information on our collaboration arrangements with 
Genentech, please read Note 19, Collaborative and Other Relationships, to these consolidated financial statements.

F- 30

 
 
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....... $
Revenues earned under our technical development
agreement, 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 Sobi and
royalties from Sobi on sales of ELOCTA and ALPROLIX ........

Other royalty and corporate revenues:

Royalty............................................................................
Other corporate ...............................................................

For the Years Ended December 31,

2018

2017

2016

(8.6) $

(16.9) $

(21.9)

96.4

—

38.7

459.4

42.7

10.7

69.8

253.7

20.2

41.0

46.5

230.6

316.4

Total other revenues ...................................................... $

585.9 $

360.0 $

Other corporate revenues primarily reflect amounts earned under contract manufacturing agreements with our 

strategic partners, including Bioverativ.

For additional information on our collaboration arrangements with AbbVie and Samsung Bioepis, please read 
Note 19, Collaborative and Other Relationships, to these consolidated financial statements. For additional information 
on our contract manufacturing agreements with Bioverativ, please read Note 3, Hemophilia Spin-Off, to these 
consolidated financial statements.

6.     

Inventory

The components of inventory are summarized as follows:

(In millions)
Raw materials ............................................................................................. $
Work in process ..........................................................................................
Finished goods ...........................................................................................

Total inventory........................................................................................... $

Balance Sheet Classification:
Inventory .................................................................................................... $
Investments and other assets ......................................................................

Total inventory........................................................................................... $

As of December 31,

2018

2017

196.3 $
606.7
133.5
936.5 $

929.9 $
6.6
936.5 $

162.4
605.7
157.4
925.5

902.7
22.8
925.5

Included in the table above is hemophilia related inventory totaling approximately $180.0 million as of 

December 31, 2018, which is expected to be sold to Bioverativ in the first quarter of 2019. 

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 $41.9 million, $76.9 million and $48.2 million for the years ended 
December 31, 2018, 2017 and 2016, respectively. 

F- 31

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

7.     

Intangible Assets and Goodwill

Intangible Assets

Intangible assets, net of accumulated amortization, impairment charges and adjustments are summarized as 

follows:

(In millions)
Out-licensed patents ..
Developed technology.
In-process research
and development .......
Trademarks and trade
names.......................
Acquired and in-
licensed rights and
patents .....................
Total intangible
assets.................

Estimated Life

Cost

Accumulated
Amortization

Net

Cost

Accumulated
Amortization

As of December 31, 2018

As of December 31, 2017

13-23 years $ 543.3 $ (542.3) $
3,005.3
15-23 years
Indefinite until
commercialization

(2,734.8)

476.0

—

1.0 $ 543.3 $ (535.6) $

270.5

3,005.3

(2,689.0)

476.0

680.6

Indefinite

64.0

—

64.0

64.0

Net

7.7
316.3

680.6

64.0

—

—

4-18 years

3,638.7

(1,330.2)

2,308.5

3,971.4

(1,160.4)

2,811.0

$7,727.3 $ (4,607.3) $3,120.0 $8,264.6 $ (4,385.0) $3,879.6

Amortization and impairments of acquired intangible assets totaled $747.3 million, $814.7 million and $385.6 

million for the years ended December 31, 2018, 2017 and 2016, respectively. 

Amortization and impairments of acquired intangible assets for the year ended December 31, 2018, includes 

the impact of a $176.8 million impairment charge related to our intangible asset associated with our U.S. license to 
Forward Pharma's intellectual property, including Forward Pharma's intellectual property related to TECFIDERA, as 
discussed below. Amortization and impairment of acquired intangible assets for 2018 also reflects the impact of 
impairment charges related to certain IPR&D assets associated with our vixotrigine (BIIB074) program totaling 
$189.3 million, also discussed below.

Amortization and impairments of acquired intangible assets for the year ended December 31, 2017, includes 
the impact of a $328.2 million impairment charge 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 and impairment of acquired intangible assets for 2017 also includes a $31.2 million impairment charge 
related to our acquired and in-licensed rights and patents intangible asset associated with ZINBRYTA after the 
initiation of an European Medicines Agency (EMA) review (referred to as an Article 20 Procedure) of ZINBRYTA 
following the report of a case of fatal fulminant liver failure, as well as four cases of serious liver injury. 

Amortization and impairments of acquired intangible assets for the year ended December 31, 2016, included 
impairment charges of $12.2 million related to two of our IPR&D intangible assets resulting from the termination of 
our collaboration agreements with Rodin Therapeutics, Inc. and Ataxion Inc.

Amortization of acquired intangible assets, excluding impairment charges, totaled $381.2 million, $455.3 

million and $373.4 million for the years ended December 31, 2018, 2017 and 2016, respectively.

Out-licensed Patents

Out-licensed patents to third-parties primarily relate to patents acquired in connection with the merger of 

Biogen, Inc. and IDEC Pharmaceuticals Corporation in 2003. 

Developed Technology

Developed technology primarily relates to our AVONEX product, which was recorded in connection with the 
merger of Biogen, Inc. and IDEC Pharmaceuticals Corporation in 2003. The net book value of this asset, as of 
December 31, 2018, was $265.0 million. 

IPR&D

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

reached technological feasibility at the date of acquisition. Upon commercialization, we will determine the estimated 

F- 32

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

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, 2018 and 2017, relates to the various IPR&D programs we 
acquired in connection with our acquisitions of Convergence Pharmaceuticals (Convergence), Stromedix Inc. 
(Stromedix) and Biogen International Neuroscience GmbH (BIN) in 2015, 2012 and 2010, respectively. IPR&D 
balances include adjustments related to foreign currency exchange rate fluctuations.

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 third quarter of 2018. 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.  

Vixotrigine

During the third quarter of 2018 we completed a Phase 2b study of vixotrigine for the treatment of painful 
lumbosacral radiculopathy (PLSR). The study did not meet its primary or secondary efficacy endpoints; therefore, we 
discontinued development of vixotrigine for the treatment of PLSR and 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 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 treatment of PLSR and insights from the 
Phase 2 study of vixotrigine for the treatment of small fiber neuropathy. We reassessed the fair value of our 
vixotrigine program for the treatment of TGN using reduced expected lifetime revenues, higher expected clinical 
development costs and lower cumulative probabilities of success, and, as a result of that assessment, we 
recognized an impairment charge of $129.3 million during the third quarter of 2018 to reduce the fair value of the 
IPR&D intangible asset associated with our vixotrigine program for the treatment of TGN to $41.8 million. 

In late December 2018 we received feedback from the FDA regarding the design of the Phase 3 vixotrigine 

program for the treatment of TGN. Following this feedback, we are now planning to initiate the Phase 3 vixotrigine 
program for the treatment of TGN.

The IPR&D impairment charges that resulted from the developments in our vixotrigine program for the treatment 

of TGN, as discussed above, were included in amortization and impairment of acquired intangible assets. The fair 
value of the intangible assets 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.

We may recognize additional impairment charges in the future depending upon our ability to advance vixotrigine 

for the treatment of TGN or other indications. 

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. Acquired and in-licensed rights and patents also includes our U.S and rest of world licenses to Forward 
Pharma's intellectual property, including Forward Pharma's intellectual property related to TECFIDERA, as discussed 
below, and other amounts related to our other marketed products and other programs acquired through business 
combinations. The net book value of the TYSABRI asset as of December 31, 2018, was $2,027.1 million. 

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 have two intellectual property disputes with Forward Pharma, one in the U.S. and one in the E.U., concerning 

intellectual property related to TECFIDERA. 

In March 2017 the U.S. intellectual property dispute was decided in our favor. Forward Pharma appealed to the 
U.S. Court of Appeals for the Federal Circuit. 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 
F- 33

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

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 (USPTO) 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 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.

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 Board of Appeal of the EPO and the appeal is pending. 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 intangible asset as of December 31, 2018, was $71.0 million.

For additional information on these disputes, please read Note 21, Litigation, to these consolidated financial 

statements.

Estimated Future Amortization of Intangible Assets 

Our amortization expense is based on the economic consumption and impairment of intangible assets. Our 
most significant intangible assets are related to our TYSABRI, AVONEX, SPINRAZA and TECFIDERA products and other 
programs acquired through business combinations. Annually, during our long-range planning cycle, we perform an 
analysis of the anticipated lifetime revenues of our TYSABRI, AVONEX, SPINRAZA and TECFIDERA products. This 
analysis is also updated whenever events or changes in circumstances would significantly affect the anticipated 
lifetime revenues of any of these products. Impairments are recorded in the period in which they are incurred.

Our most recent long-range planning cycle was completed in the third quarter of 2018. Based upon this most 

recent analysis, the estimated future amortization of acquired intangible assets for the next five years is expected to 
be as follows:

(In millions)

As of December 31, 2018

2019 ............................................................................................................................... $
2020 ...............................................................................................................................
2021 ...............................................................................................................................
2022 ...............................................................................................................................
2023 ...............................................................................................................................

270.0

290.0

250.0

250.0

230.0

Goodwill

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

(In millions)
Goodwill, beginning of year ........................................................................ $
Elimination of goodwill allocated to our hemophilia business .....................
Increase to goodwill ................................................................................
Other .....................................................................................................
Goodwill, end of year................................................................................. $

As of December 31,

2018

2017

4,632.5 $

—
1,080.1
(6.2)
5,706.4 $

3,669.3
(314.1)
1,267.3
10.0
4,632.5

The elimination of goodwill represents an allocation based upon the relative enterprise fair value of our 
hemophilia business as of February 1, 2017. For additional information on the spin-off of our hemophilia business, 
please read Note 3, Hemophilia Spin-Off, to these consolidated financial statements.

The increase to goodwill during 2018 and 2017 was related to $1.2 billion and $1.5 billion in contingent 
milestones achieved (exclusive of $119.9 million and $232.7 million in tax benefits), respectively, 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 our last $300.0 million contingent payment related to 
FUMADERM and TECFIDERA (together, the Fumapharm Products), which will be paid in the first quarter of 2019. For 

F- 34

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

additional information on contingent payments to the former shareholders of Fumapharm AG and holders of their 
rights, please read Note 22, Commitments and Contingencies, to these consolidated financial statements.

Other includes changes related to foreign currency exchange rate fluctuations. As of December 31, 2018, we 

had no accumulated impairment losses related to goodwill. 

8.      Fair Value Measurements

The tables below present information about our assets and liabilities that are regularly measured and carried at 

fair value and indicate the level within the fair value hierarchy of the valuation techniques we utilized to determine 
such fair value:

Quoted
Prices in
Active
Markets
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

Total

705.5 $

— $

705.5 $

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:

2,459.2
969.6
260.5
615.4
66.9
25.4
5,102.5 $

Derivative contracts.......................................... $
Contingent consideration obligations .................

Total........................................................ $

24.6 $

409.8
434.4 $

24.6 $
—
24.6 $

—
409.8
409.8

Quoted
Prices
in Active
Markets
(Level 1)

Significant
Other
Observable
Inputs
(Level 2)

Significant
Unobservable
Inputs
(Level 3)

Total

1,229.4 $

— $

1,229.4 $

—

—
—
—
—
—
—
—

—

—
—
—
—
—
—
—

2,459.2
969.6
260.5
563.7
66.9
25.4
5,050.8 $

2,609.8
1,919.3
643.4
—
2.7
28.5
6,433.1 $

—
—
—
51.7
—
—
51.7 $

— $
—
— $

—
—
—
11.8
—
—
11.8 $

— $
—
— $

As of December 31, 2017 (In millions)
Assets:

Cash equivalents ............................................. $
Marketable debt securities:

Corporate debt securities..............................
Government securities..................................
Mortgage and other asset backed securities ..
Marketable equity securities .............................
Derivative contracts..........................................
Plan assets for deferred compensation..............

Total........................................................ $

Liabilities:

2,609.8
1,919.3
643.4
11.8
2.7
28.5
6,444.9 $

Derivative contracts.......................................... $
Contingent consideration obligations .................

Total........................................................ $

111.3 $
523.6
634.9 $

111.3 $
—
111.3 $

—
523.6
523.6

There have been no changes in valuation techniques or transfers between fair value measurement levels during 
the years ended December 31, 2018 and 2017. 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 

F- 35

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

new agreement with Ionis, please read Note 19, 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)
Notes payable to Fumedica AG................................................................... $
2.900% Senior Notes due September 15, 2020..........................................
3.625% Senior Notes due September 15, 2022..........................................
4.050% Senior Notes due September 15, 2025..........................................
5.200% Senior Notes due September 15, 2045..........................................

Total ...................................................................................................... $

As of December 31,

2018

2017

— $

1,489.5
1,000.4
1,745.1
1,802.6
6,037.6 $

3.2
1,517.7
1,032.9
1,851.9
2,077.6
6,483.3

In connection with our 2006 distribution agreement with Fumedica AG, we issued notes totaling 61.4 million 

Swiss Francs that were payable to Fumedica AG in varying amounts from June 2008 through June 2018. In June 
2018 we redeemed our remaining note payable to Fumedica AG.

The fair value of our notes payable to Fumedica AG, as of December 31, 2017, was estimated using market 
observable inputs, including current interest and foreign currency exchange rates. The fair value for each series of 
our Senior Notes was determined through market, observable and corroborated sources. For additional information 
on our debt instruments, please read Note 12, Indebtedness, to these consolidated financial statements.

Contingent Consideration Obligations

In connection with our acquisitions of Convergence, Stromedix and BIN in 2015, 2012 and 2010, respectively, 

we agreed to make additional payments based upon the achievement of certain milestone events. The following 
table provides a roll forward of the fair values of our contingent consideration obligations, which includes Level 3 
measurements:

(In millions)
Fair value, beginning of year....................................................................... $
Changes in fair value...............................................................................
Payments and other ................................................................................
Fair value, end of year ............................................................................... $

As of December 31,

2018

2017

523.6 $
(12.3)
(101.5)
409.8 $

467.6
62.7
(6.7)
523.6

 As of December 31, 2018 and 2017, approximately $265.0 million and $279.0 million, respectively, of the fair 

value of our total contingent consideration obligations was reflected as a component of other long-term liabilities in 
our consolidated balance sheets with the remaining balance reflected as a component of accrued expenses and 
other. 

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 our vixotrigine program 
for the treatment of TGN 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 a $81.5 
million milestone payment made to the former shareholders of Stromedix, as discussed below. For additional 
information on our IPR&D intangible asset related to our vixotrigine program for the treatment of TGN, please read 
Note 7, Intangible Assets and Goodwill, to these consolidated financial statements.

For the year ended December 31, 2017, changes in the fair value of our contingent consideration obligations 

are primarily due to changes in the expected timing and probabilities of success related to the achievement of 
certain development milestones and changes in the discount rate.

F- 36

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

The fair values of the intangible assets and contingent consideration liabilities were based on a probability-
adjusted discounted cash flow calculation using Level 3 fair value measurements and inputs including estimated 
revenues and probabilities of success. For additional information on the valuation techniques and inputs utilized in 
the valuation of our financial assets and liabilities, please read Note 1, Summary of Significant Accounting Policies, to 
these consolidated financial statements.

Convergence Pharmaceuticals Ltd.

In connection with our acquisition of Convergence in February 2015 we recorded a contingent consideration 

obligation of $274.5 million. This valuation was based on probability weighted net cash outflow projections of 
$450.0 million, discounted using a rate of 2.0%, which was the estimated cost of debt financing for market 
participants. This liability reflected the revised estimate from the date of acquisition for our initial clinical 
development plans, resulting probabilities of success and the timing of certain milestone payments. 

As of December 31, 2018 and 2017, the fair value of this contingent consideration obligation was $246.6 

million and $259.0 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 3.6%, which is a measure of the 
credit risk associated with settling the liability. 

For 2018 compared to 2017, the net decrease in our contingent consideration obligation was primarily due to 

delays in the expected timing of achievement of milestones related to our vixotrigine program for the treatment of 
TGN and an increase in discount rates used to revalue our contingent consideration liabilities, partially offset by the 
passage of time. Accrued expenses and other in our consolidated balance sheets include $144.8 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. As of December 31, 2018 and 2017, the fair value of this contingent consideration 
obligation was $83.0 million and $162.4 million, respectively. Our most recent valuation was determined based upon 
net cash outflow projections of $306.5 million, probability weighted and discounted using a rate of 3.6%, which is a 
measure of the credit risk associated with settling the liability. 

For 2018 compared to 2017, the net decrease in our contingent consideration obligation was primarily due to a 

$81.5 million milestone paid to the former shareholders of Stromedix as we dosed our first patient in the Phase 2b 
study of BG00011 (STX-100) in idiopathic pulmonary fibrosis in September 2018, changes in the expected timing 
related to the achievement of certain remaining developmental milestones and an increase in discount rates, 
partially offset by the passage of time. No amounts are reflected as a current liability in our consolidated balance 
sheets as we do not expect to make a payment in the next year.

Biogen Idec International Neuroscience GmbH

In connection with our acquisition of BIN in December 2010 we recorded a contingent consideration obligation 
of $81.2 million. As of December 31, 2018 and 2017, the fair value of this contingent consideration obligation was 
$80.2 million and $102.2 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 3.8%, which is a measure 
of the credit risk associated with settling the liability. 

For 2018 compared to 2017, the net decrease in our contingent consideration obligation was primarily due to a 

$20.0 million development milestone paid in the first quarter of 2018 as we dosed our first patient in our Phase 2 
SPARK study of BIIB054 ( -synuclein mAb) in Parkinson's disease in January 2018 and an increase in discount 
rates, partially offset by the passage of time. No amounts are reflected as a current liability in our consolidated 
balance sheets as we do not expect to make a payment in the next year.

Acquired IPR&D

In connection with our acquisition of Convergence, we also allocated $424.6 million of the total purchase price 
to acquired IPR&D, which was capitalized as an intangible asset. The amount allocated to acquired IPR&D was based 
on significant inputs not observable in the market and thus represented a Level 3 fair value measurement. These 
assets will be tested for impairment annually until commercialization, after which time the acquired IPR&D will be 
amortized over its estimated useful life using the economic consumption method. During the third quarter of 2018 
we recognized impairment charges related to certain IPR&D assets associated with our vixotrigine program totaling 
F- 37

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

$189.3 million. For additional information on our IPR&D intangible assets related to our vixotrigine program, 
including a discussion of our most significant assumptions, please read Note 7, Intangible Assets and Goodwill, to 
these consolidated financial statements.

9.    Financial Instruments

The following table summarizes our financial assets with maturities of less than 90 days from the date of 

purchase included in cash and cash equivalents in our consolidated balance sheets:

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

Total ........................................................................................................ $

As of December 31,

2018

2017

231.2 $
—
279.5
194.8
705.5 $

30.5
3.6
948.0
247.3
1,229.4

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. 

Upon the adoption of ASU 2016-01, our 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, 2018 (In millions)
Corporate debt securities

Fair
Value

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Amortized
Cost

Current ...................................................... $
Non-current ................................................

1,607.5 $
851.7

Government securities

Current ......................................................
Non-current ................................................

Mortgage and other asset backed securities

Current ......................................................
Non-current ................................................

Total marketable debt securities ................ $
Marketable equity securities, non-current........ $

705.8
263.8

0.1
260.4
3,689.3 $
615.4 $

— $
0.7

0.1
0.1

—
0.4
1.3 $
127.7 $

(0.9) $
(3.9)

1,608.4
854.9

(0.4)
(0.3)

—
(0.5)
(6.0) $
(8.5) $

706.1
264.0

0.1
260.5
3,694.0
496.2

As of December 31, 2017 (In millions)
Corporate debt securities

Fair
Value

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Amortized
Cost

Current ........................................................ $
Non-current..................................................

1,039.3 $
1,570.5

Government securities

Current ........................................................
Non-current..................................................

1,075.1
844.2

Mortgage and other asset backed securities

Current ........................................................
Non-current..................................................

Total marketable debt securities................ $
Marketable equity securities, non-current ......... $

0.8
642.6
5,172.5 $
11.8 $

F- 38

— $
0.9

0.1
0.2

—
1.1
2.3 $
1.8 $

(0.2) $
—

1,039.5
1,569.6

(0.7)
(1.1)

—
(0.8)
(2.8) $
(4.4) $

1,075.7
845.1

0.8
642.3
5,173.0
14.4

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

Summary of Contractual Maturities: Available-for-Sale Securities

The estimated fair value and amortized cost of our marketable debt securities available-for-sale by contractual 

maturity are summarized as follows:

(In millions)
Due in one year or less................................... $
Due after one year through five years...............
Due after five years ........................................

Total available-for-sale securities ................... $

As of December 31, 2018

As of December 31, 2017

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 $

Estimated
Fair  Value

2,115.2 $
2,730.0
327.3
5,172.5 $

Amortized
Cost
2,116.0
2,730.0
327.0
5,173.0

The average maturity of our marketable debt securities available-for-sale as of December 31, 2018 and 2017, 

were 12 months and 17 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,

2018

2017

2016

9,173.7 $
3.2 $
11.7 $

5,565.9 $
3.0 $
22.4 $

7,378.9
3.3
4.3

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. Realized losses for the 
year ended December 31, 2016, primarily relate to sales of corporate bonds, agency mortgage-backed securities and 
other asset-backed securities.

Strategic Investments

As of December 31, 2018 and 2017, our strategic investment portfolio was comprised of investments totaling 

$676.3 million and $85.8 million, respectively, which are included in investments and other assets in our 
consolidated balance sheets. The increase in our strategic investment portfolio is primarily a result of our investment 
in Ionis' common stock, as discussed below. 

Our strategic investment portfolio includes investments in equity securities of certain biotechnology companies 

and venture capital funds where the underlying investments are in equity securities of certain biotechnology 
companies. Our investments in equity securities of certain publicly-traded biotechnology companies are regularly 
measured and carried at fair value and classified as Level 1 marketable equity securities within our disclosures 
included in Note 8, Fair Value Measurements, to these consolidated financial statements. 

Ionis Pharmaceuticals, Inc. 

In June 2018 we closed a new 10-year exclusive agreement with Ionis to develop novel antisense 

oligonucleotide (ASO) 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. 

Our investment in Ionis' common stock is remeasured each reporting period and carried at fair value as a Level 
2 marketable equity security due to certain holding period restrictions. The effect of these holding period restrictions 
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.

F- 39

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

For additional information on the 2018 Ionis Agreement, please read Note 19, 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, 2018, the carrying value of our investment in Samsung Bioepis totaled 759.5 billion South 

Korean won ($680.6 million), which is classified as a component of investments and other assets within our 
consolidated balance sheet.

For additional information on our collaboration arrangements with Samsung Bioepis, please read Note 19, 

Collaborative and Other Relationships, to these consolidated financial statements.

10.  Derivative Instruments

In August 2017 the FASB issued ASU 2017-12. We adopted this standard on January 1, 2018, using the 
modified retrospective method, which did not have an impact on our financial position or results of operations; 
however, the adoption of this standard resulted in additional disclosures and a change in the income statement 
classification with respect to where we recognize cash flow hedge ineffective or excluded hedge transaction gains 
and losses. For additional information on this standard, please read Note 1, Summary of Significant Accounting 
Policies - New Accounting Pronouncements, to these consolidated financial statements.

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, 2018 and 2017, had durations of 1 to 12 

months and 1 to 21 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. Prior to the adoption of ASU 2017-12 on January 1, 2018, to the extent ineffective or excluded, cash flow 
hedge transaction gains and losses were reported in other income (expense), net. Effective January 1, 2018, we 
recognize all cash flow hedge reclassifications from accumulated other comprehensive income and fair value 
changes of any cash flow hedge ineffectiveness or excluded portions in the same line item in our consolidated 
statements of income that has been impacted by the hedged item.

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 ..........................................................................................

Total foreign currency forward contracts...................................................... $

Notional Amount
As of December 31,

2018

2017

1,701.4 $
215.3
131.4
98.8
92.2
2,239.1 $

1,875.6
150.9
88.7
—
83.5
2,198.7

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 $27.3 million as of 

F- 40

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

December 31, 2018, net losses of $113.0 million as of December 31, 2017, and net gains of $49.8 million as of 
December 31, 2016. We expect the net gains of $27.3 million 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, 2018 and 
2017, 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 Year 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 ......................... $

2018

Location

(42.5) Revenues ........................................ $
0.2 Operating expenses ......................... $

2018

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

2016

Location

2017

2016

(32.5) $
0.6 $

5.3 Other income (expense)..... $
(1.5) Other income (expense)..... $

8.9 $
(0.2) $

2.9
0.1

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. 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. 

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, 
2018, had remaining durations of 10 months. These contracts have been designated as net investment hedges. 
Since the critical terms of the investment and the foreign currency forward contracts match, these contracts are 
assumed to be highly effective. We recognize changes in the spot exchange rate in accumulated other 
comprehensive income (loss) (referred to as AOCI in the table below). 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 $3.8 million as of December 31, 2018. 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 

F- 41

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

points that were included in accumulated other comprehensive income (loss) in total equity reflected gains of $7.3 
million as of December 31, 2018.

The following table summarizes the effect of our net investment hedge in our consolidated financial 

statements:

(In millions)
Location
Net Gains/(Losses) Recognized in AOCI ..... Gains (Losses) on Net Investment Hedge........... $
Net Gains/(Losses) Reclassified from AOCI
into Net Income ........................................ Other income (expense) .................................... $

For the Year Ended
December 31, 2018

(3.8)

1.5

For additional information on our collaboration arrangement with Samsung Bioepis, please read Note 19, 

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, 2018 and 

2017, were $735.1 million and $564.9 million, respectively. Net gains of $2.0 million and $4.5 million and net 
losses of $29.2 million related to these contracts were recorded as a component of other income (expense), net, for 
the years ended December 31, 2018, 2017 and 2016, 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. 

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)
Hedging Instruments:

Balance Sheet Location

Fair Value
As of December 31, 2018

Asset derivative instruments .............................. Other current assets ........................ $
Liability derivative instruments ........................... Accrued expenses and other ............. $
Other long-term liabilities .................. $

Other Derivative Instruments:

Asset derivative instruments .............................. Other current assets ........................ $
Liability derivative instruments ........................... Accrued expenses and other ............. $

65.8
6.9
14.5

1.1
3.2

(In millions)
Hedging Instruments:

Balance Sheet Location

Fair Value
As of December 31, 2017

Asset derivative instruments .............................. Other current assets ........................ $
Investments and other assets ........... $
Liability derivative instruments ........................... Accrued expenses and other ............. $
Other long-term liabilities .................. $

Other Derivative Instruments:

Asset derivative instruments .............................. Other current assets ........................ $
Liability derivative instruments ........................... Accrued expenses and other ............. $

0.7
0.2
84.7
23.6

1.8
3.0

F- 42

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

11.    Property, Plant and Equipment

Property, plant and equipment are recorded at historical cost, net of accumulated depreciation. Components of 

property, plant and equipment, net are summarized as follows:

(In millions)
Land........................................................................................................ $
Buildings..................................................................................................
Leasehold improvements ..........................................................................
Machinery and equipment .........................................................................
Computer software and hardware...............................................................
Furniture and fixtures ................................................................................
Construction in progress ...........................................................................
Total cost...............................................................................................
Less: accumulated depreciation ................................................................

Total property, plant and equipment, net ................................................... $

As of December 31,

2018

2017

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 $

141.2
1,213.6
80.6
1,207.7
767.1
55.3
1,276.0
4,741.5
(1,559.1)
3,182.4

Depreciation expense totaled $269.4 million, $266.3 million and $309.3 million for 2018, 2017 and 2016, 

respectively.

For 2018, 2017 and 2016 we capitalized interest costs related to construction in progress totaling 

approximately $54.0 million, $30.7 million and $12.9 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

We are building a large-scale biologics manufacturing facility in Solothurn, Switzerland. We expect this facility to 

be 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, 2018 and 2017, we had approximately $1.6 billion and 
$1.2 billion, respectively, capitalized as construction in progress related to this facility. 

12.  

Indebtedness

Our indebtedness is summarized as follows:

(In millions)
Current portion:

As of December 31,

2018

2017

Notes payable to Fumedica AG................................................................. $
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......................................

1,480.8
995.5
1,737.8
1,722.4

Non-current portion of notes payable .................................................... $

5,936.5 $

3.2

3.2

1,482.4
994.3
1,736.3
1,722.0

5,935.0

6.875% Senior Notes due March 1, 2018

On March 4, 2008, we issued $550.0 million aggregate principal amount of 6.875% Senior Notes due March 

1, 2018, at 99.184% of par. These notes were senior unsecured obligations. We also entered into interest rate swap 
contracts where we received a fixed rate and paid a variable rate. These contracts were terminated in December 
2008. Upon termination of these interest rate swap contracts, the carrying amount of these Senior Notes increased 

F- 43

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

by $62.8 million, with this amount being amortized using the effective interest rate method over the remaining life of 
the Senior Notes and recognized as a reduction of interest expense.

In November 2017 we redeemed these Senior Notes prior to their maturity and recognized a net charge of $5.2 

million upon the extinguishment of these Senior Notes. This charge, which was recognized in interest expense in 
other income (expense), net in our consolidated statements of income for the year ended December 31, 2017, 
reflects the payment of a $7.7 million early call premium and the write-off of remaining unamortized original debt 
issuance costs and discount balances, partially offset by a $2.9 million gain related to the remaining unamortized 
balance of the interest rate swap liability discussed above.

Notes payable to Fumedica AG

In connection with our 2006 distribution agreement with Fumedica AG, we issued notes totaling 61.4 million 

Swiss Francs that were payable to Fumedica AG in varying amounts from June 2008 through June 2018. In June 
2018 we redeemed our remaining note payable to Fumedica AG.

2015 Senior Notes

The following is a summary of our principal indebtedness as of December 31, 2018:

•  $1.5 billion aggregate principal amount of 2.90% Senior Notes due September 15, 2020, valued at 

99.792% of par;

•  $1.0 billion aggregate principal amount of 3.625% Senior Notes due September 15, 2022, valued at 

99.920% of par;

•  $1.75 billion aggregate principal amount of 4.05% Senior Notes due September 15, 2025, valued at 

99.764% of par; and

•  $1.75 billion aggregate principal amount of 5.20% Senior Notes due September 15, 2045, valued at 

99.294% of par.

The costs associated with these offerings of approximately $47.5 million have been recorded as a reduction to 

the carrying amount of the debt in our consolidated balance sheet. These costs along with the discounts will be 
amortized as additional interest expense using the effective interest rate method over the period from issuance 
through maturity. 

These notes are senior unsecured obligations. These Senior Notes may be redeemed at our option at any time 

at 100% of the principal amount plus accrued interest and a specified make-whole amount. These Senior Notes 
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, 2018 and 2017, includes approximately $14.5 
million and $10.1 million, respectively, related to changes in the fair value of these contracts. For additional 
information on our interest rate contracts, please read Note 10, Derivative Instruments, to these consolidated 
financial statements.

Credit Facility

In August 2015 we entered into a $1.0 billion, five-year senior unsecured revolving credit facility under which 

we are permitted to draw funds for working capital and general corporate purposes. The terms of the revolving credit 
facility include a financial covenant that requires us not to exceed a maximum consolidated leverage ratio. As of 
December 31, 2018, we had no outstanding borrowings and were in compliance with all covenants under this facility.

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)
2019 ............................................................................................................................ $
2020 ............................................................................................................................
2021 ............................................................................................................................
2022 ............................................................................................................................
2023 ............................................................................................................................
2024 and thereafter.......................................................................................................

Total ....................................................................................................................... $

As of December 31, 2018
—
1,500.0
—
1,000.0
—
3,500.0
6,000.0

The fair value of our debt is disclosed in Note 8, Fair Value Measurements, to these consolidated financial 

statements.

13.  

 Equity

Preferred Stock

We have 8.0 million shares of Preferred Stock authorized, of which 1.75 million shares are authorized as 

Series A, 1.0 million shares are authorized as Series X junior participating and 5.25 million shares are 
undesignated. Shares may be issued without a vote or action of shareholders from time to time in classes or series 
with the designations, powers, preferences, and the relative, participating, optional or other special rights of the 
shares of each such class or series and any qualifications, limitations or restrictions thereon as set forth in the 
instruments governing such shares. Any such Preferred Stock may rank prior to common stock as to dividend rights, 
liquidation preference or both, and may have full or limited voting rights and may be convertible into shares of 
common stock. No shares of Preferred Stock were issued and outstanding during 2018, 2017 and 2016.

Common Stock

The following table describes the number of shares authorized, issued and outstanding of our common stock 

as of December 31, 2018, 2017 and 2016:

As of December 31, 2018

As of December 31, 2017

December 31, 2016

(In millions)
Authorized
Common stock . 1,000.0

Issued
221.0

Outstanding
197.2

Authorized
1,000.0

Issued
235.3

Outstanding
211.5

Authorized
1,000.0

Issued
238.5

Outstanding
215.9

Share Repurchases

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). Our 2018 Share Repurchase program does not have an expiration date. 
All share repurchases under our 2018 Share Repurchase Program will be retired. Under our 2018 Share Repurchase 
Program, we repurchased and retired approximately 4.3 million shares of our common stock at a cost of 
approximately $1.4 billion during the year ended December 31, 2018.

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 
2016 Share Repurchase Program were retired. Under our 2016 Share Repurchase Program, we repurchased and 
retired approximately 10.5 million, 3.7 million and 3.3 million shares of common stock at a cost of approximately 
$3.0 billion, $1.0 billion and $1.0 billion during the years ended December 31, 2018, 2017 and 2016, respectively.

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

common stock (2011 Share Repurchase Program), which was completed as of March 31, 2017. Share repurchases 
under our 2011 Share Repurchase Program were principally used to offset common stock issuances under our 
share-based compensation programs. Under our 2011 Share Repurchase Program, we repurchased approximately 
1.2 million shares of common stock at a cost of $365.4 million during the year ended December 31, 2017. We did 
not repurchase any shares of common stock under our 2011 Share Repurchase Program during the year ended 
December 31, 2016.

F- 45

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

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.

14.  

 Accumulated Other Comprehensive Income (Loss)

The following table summarizes the changes in accumulated other comprehensive income (loss), net of tax by 

component:

(In millions)

Unrealized
Gains (Losses)
on Securities
Available for
Sale, net of tax

Unrealized
Gains (Losses)
on Cash Flow
Hedges, net of
tax

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)..................................
Balance, December 31, 2018. $

(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

(4.0) $

34.7 $

3.5 $

(31.3) $

(243.3) $ (240.4)

(In millions)
Balance, December 31, 2016. $

Other comprehensive
income (loss) before
reclassifications ................
Amounts reclassified from
accumulated other
comprehensive income
(loss)................................

Net current period other
comprehensive income
(loss)..................................
Balance, December 31, 2017. $

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

(10.8) $

57.8 $

— $

(32.7) $

(334.2) $ (319.9)

(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

(1.6) $

(104.5) $

— $

(36.8) $

(175.5) $ (318.4)

F- 46

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

(In millions)
Balance, December 31, 2015. $

Other comprehensive
income (loss) before
reclassifications ................
Amounts reclassified from
accumulated other
comprehensive income
(loss)................................

Net current period other
comprehensive income
(loss)..................................
Balance, December 31, 2016. $

Unrealized
Gains (Losses)
on Securities
Available for
Sale, net of tax

Unrealized
Gains (Losses)
on Cash Flow
Hedges, net of
tax

Gains (Losses)
on Net
Investment
Hedge, Net of
Tax

Unfunded
Status of
Postretirement
Benefit Plans,
net of tax

Currency
Translation
Adjustments

Total

(0.8) $

10.2 $

— $

(37.8) $

(195.6) $ (224.0)

(10.6)

51.6

0.6

(4.0)

(10.0)

47.6

—

—

—

5.1

(138.6)

(92.5)

—

—

(3.4)

5.1

(138.6)

(95.9)

(10.8) $

57.8 $

— $

(32.7) $

(334.2) $ (319.9)

The following table summarizes the amounts reclassified from accumulated other comprehensive income:

Amounts Reclassified from
Accumulated Other Comprehensive Income

For the Years Ended December 31,

2018

2017

2016

(In millions)
Gains (losses) on securities available for
sale .......................................................... Other income (expense).......... $

Income Statement Location

Income tax benefit (expense) ..

Gains (losses) on cash flow hedges ............ Revenues ..............................
Operating expenses................
Other income (expense)..........
Income tax benefit (expense) ..

Gains (losses) on net investment hedge ...... Other Income (expense)..........
Income tax benefit (expense) ..

(8.5) $
1.8

(19.5) $
6.8

(42.5)
0.2
0.3
0.2

1.5
—

(32.5)
0.6
0.3
0.1

—
—

Total reclassifications, net of tax .................

$

(47.0) $

(44.2) $

(0.9)
0.3

5.3
(1.5)
0.2
—

—
—

3.4

15.  

 Earnings per Share

Basic and diluted earnings per share are calculated as follows:

(In millions)
Numerator:

For the Years Ended December 31,

2018

2017

2016

Net income attributable to Biogen Inc................................. $

4,430.7 $

2,539.1 $

3,702.8

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 .....

204.9

—
0.3
0.1
—
0.4
205.3

212.6

0.1
0.2
0.1
—
0.4
213.0

218.4

0.1
0.2
0.1
—
0.4
218.8

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, 2018, 2017 and 2016, reflects, on a weighted average 

basis, the repurchase of approximately 14.8 million shares, 3.7 million shares and 0.7 million shares of our 
common stock, respectively, under our 2018, 2016 and 2011 Share Repurchase Programs.

The adjustments related to the spin-off of our hemophilia business did not have a material impact on the 
potentially dilutive securities to be considered in the calculation of diluted earnings per share of common stock.

16.   Share-Based Payments

Share-Based Compensation Expense

The following table summarizes share-based compensation expense included in our consolidated statements of 

income:

(In millions)
Research and development ................................................... $
Selling, general and administrative.........................................
Restructuring charges ...........................................................
Subtotal .............................................................................
Capitalized share-based compensation costs ..........................
Share-based compensation expense included in total cost
and expenses .....................................................................

Income tax effect ..................................................................
Share-based compensation expense included in net income
attributable to Biogen Inc. ................................................... $

For the Years Ended December 31,

2018

2017

2016

75.8 $

105.8
—
181.6
(11.5)

170.1
(27.5)

74.0 $
95.7
—
169.7
(9.6)

160.1
(42.8)

84.5
121.7
(1.8)
204.4
(14.6)

189.8
(54.0)

142.6 $

117.3 $

135.8

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...............................................
Subtotal .............................................................................
Capitalized share-based compensation costs ..........................
Share-based compensation expense included in total cost
and expenses ..................................................................... $

For the Years Ended December 31,

2018

2017

2016

27.2 $

22.4 $

126.6
7.8
3.1
4.7
1.7
10.5
181.6
(11.5)

107.3
18.4
12.3
—
—
9.3
169.7
(9.6)

38.4
120.0
16.3
18.6
—
—
11.1
204.4
(14.6)

170.1 $

160.1 $

189.8

As of December 31, 2018, unrecognized compensation cost related to unvested share-based compensation 
was approximately $188.5 million, net of estimated forfeitures. We expect to recognize the cost of these unvested 
awards over a weighted-average period of 1.9 years.

Spin-off Related Equity Adjustments

Pursuant to an employee matters agreement entered into in connection with the spin-off of our hemophilia 
business and the provisions of our existing share-based compensation arrangements, we made certain adjustments 
to the number and terms of our outstanding stock options, RSUs, CSPUs and other share-based awards to preserve 
the intrinsic value of the awards immediately before and after the spin-off. For purposes of the vesting of these 
equity awards, continued employment or service with Biogen or with Bioverativ was treated as continued employment 
for purposes of both Biogen's and Bioverativ's equity awards with the outstanding awards continuing to vest over 

F- 48

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

their respective original vesting periods. Outstanding equity awards for employees transferring to Bioverativ were 
converted to unvested Bioverativ equity awards.

Adjustments to the number of our share-based compensation awards were made using an adjustment ratio 

based upon the weighted-average closing price of our common stock for the 10 calendar days prior to the effective 
date of the spin-off and the volume-weighted average prices for the 10 calendar days of our common stock following 
the effective date of the spin-off. For stock options, the exercise prices of the awards were modified to maintain the 
pre-spin intrinsic value of the awards in relation to the post-spin stock price of Biogen. The difference between the 
fair value of the awards based upon the adjustment ratio and the opening price on the distribution date was not 
material.

Share-Based Compensation Plans

We have three share-based compensation plans pursuant to which awards are currently being made: (i) the 

Biogen Inc. 2006 Non-Employee Directors Equity Plan (2006 Directors Plan); (ii) the Biogen Inc. 2017 Omnibus 
Equity Plan (2017 Omnibus Equity Plan); and (iii) the Biogen Inc. 2015 Employee Stock Purchase Plan (2015 ESPP). 

Directors Plan

In May 2006 our shareholders approved the 2006 Directors Plan for share-based awards to our directors. 

Awards granted from the 2006 Directors Plan may include stock options, shares of restricted stock, RSUs, stock 
appreciation rights and other awards in such amounts and with such terms and conditions as may be determined by 
a committee of our Board of Directors, subject to the provisions of the plan. We have reserved a total of 1.6 million 
shares of common stock for issuance under the 2006 Directors Plan. The 2006 Directors Plan provides that awards 
other than stock options and stock appreciation rights will be counted against the total number of shares reserved 
under the plan in a 1.5-to-1 ratio. In June 2015 our shareholders approved an amendment to extend the term of the 
2006 Directors Plan until June 2025.

Omnibus Plan

In June 2017 our shareholders approved the 2017 Omnibus Equity Plan for share-based awards to our 
employees. Awards granted from the 2017 Omnibus Equity Plan may include stock options, shares of restricted 
stock, RSUs, performance shares, stock appreciation rights and other awards in such amounts and with such terms 
and conditions as may be determined by a committee of our Board of Directors, subject to the provisions of the plan. 
Shares of common stock available for grant under the 2017 Omnibus Equity Plan consist of 8.0 million shares 
reserved for this purpose, plus shares of common stock that remained available for grant under our 2008 Omnibus 
Equity Plan as of June 7, 2017, or that could again become available for grant if outstanding awards under the 2008 
Omnibus Equity Plan as of June 7, 2017, are cancelled, surrendered or terminated in whole or in part. The 2017 
Omnibus Equity Plan provides that awards other than stock options and stock appreciation rights will be counted 
against the total number of shares available under the plan in a 1.5-to-1 ratio.

We have not made any awards pursuant to the 2008 Omnibus Equity Plan since our shareholders approved the 
2017 Omnibus Equity Plan, and do not intend to make any awards pursuant to the 2008 Omnibus Equity Plan in the 
future, except that unused shares under the 2008 Omnibus Equity Plan have been carried over for use under the 
2017 Omnibus Equity Plan.

Stock Options

We currently do not grant stock options to our employees or directors. Outstanding stock options previously 
granted to our employees and directors generally have a 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. The estimated fair value of options, including the effect of estimated forfeitures, is recognized over the 
options’ vesting periods. The fair value of the stock options granted in 2010 was estimated as of the date of grant 
using a Black-Scholes option valuation model. There were no grants of stock options made in 2018, 2017 and 
2016. As of December 31, 2018, all outstanding options were exercisable.

The expected life of options granted is derived using assumed exercise rates based on historical exercise 
patterns and represents the period of time that options granted are expected to be outstanding. Expected stock 
price volatility is based upon implied volatility for our exchange-traded options and other factors, including historical 
volatility. After assessing all available information on either historical volatility, implied volatility or both, we have 

F- 49

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

concluded that a combination of both historical and implied volatility provides the best estimate of expected volatility. 
The risk-free interest rate used is determined by the market yield curve based upon risk-free interest rates 
established by the Federal Reserve, or non-coupon bonds that have maturities equal to the expected term. The 
dividend yield of zero is based upon the fact that we have not historically granted cash dividends, and do not expect 
to issue dividends in the foreseeable future. Stock options granted prior to January 1, 2006, were valued based on 
the grant date fair value of those awards, using the Black-Scholes option pricing model, as previously calculated for 
pro-forma disclosures.

The following table summarizes our stock option activity:

Outstanding at December 31, 2017 ............................................................
Granted ...................................................................................................
Exercised.................................................................................................
Cancelled ................................................................................................
Outstanding at December 31, 2018 ............................................................

Shares

42,000 $
— $
(15,000) $
— $
27,000 $

Weighted
Average
Exercise
Price

53.83
—
53.85
—
53.82

The total intrinsic values of options exercised in 2018, 2017 and 2016 totaled $4.0 million, $3.4 million and 
$10.4 million, respectively. The aggregate intrinsic values of options outstanding as of December 31, 2018, totaled 
$6.7 million. The weighted average remaining contractual term for options outstanding as of December 31, 2018, 
was 0.7 years. 

The following table summarizes the amount of tax benefit realized for stock options and cash received from the 

exercise of stock options:

(In millions)
Tax benefit realized for stock options ..................................... $
Cash received from the exercise of stock options ................... $

For the Years Ended December 31,

2018

2017

2016

2.2 $
0.8 $

3.4 $
0.7 $

4.0
2.2

Market Stock Units (MSUs)

MSUs awarded to employees prior to 2014 vested in four equal annual increments beginning on the first 
anniversary of the grant date. Participants may ultimately earn between 0% and 150% of the target number of units 
granted based on actual stock performance. 

MSUs awarded to employees in 2014 and thereafter vest in three equal annual increments beginning on the 

first anniversary of the grant date, and participants may ultimately earn between 0% and 200% of the target number 
of units granted based on actual stock performance. 

The vesting of these awards is subject to the respective employee’s continued employment. The number of 

MSUs granted represents the target number of units that are eligible to be earned based on the attainment of 
certain market-based criteria involving our stock price. The number of MSUs earned is calculated at each annual 
anniversary from the date of grant over the respective vesting periods, resulting in multiple performance periods. 
Accordingly, additional MSUs may be issued or currently outstanding MSUs may be cancelled upon final 
determination of the number of awards earned. Compensation expense, including the effect of forfeitures, is 
recognized over the applicable service period.

F- 50

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

The following table summarizes our MSU activity:

Unvested at December 31, 2017 ................................................................
Granted (a) ..............................................................................................
Vested.....................................................................................................
Forfeited ..................................................................................................
Unvested at December 31, 2018 ................................................................

Shares

171,000 $
129,000 $
(91,000) $
(29,000) $
180,000 $

Weighted
Average
Grant Date
Fair Value

370.83
378.85
365.83
376.51
371.32

(a)  MSUs granted during 2018 include awards granted in conjunction with our annual awards made in February 2018 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 2018 also reflect an adjustment based upon the final performance multiplier in 
relation to shares granted in 2017, 2016 and 2015.

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 $279.47 - $346.76 $263.18 - $267.88 $260.67 - $304.86
Weighted-average per share grant date fair value ..

$328.03

$382.59

$378.85

2017
—%
33.0% - 35.6%
0.9% - 1.6%

2016
—%
38.2% - 40.7%
0.6% - 0.9%

2018
—%
27.5% - 32.4%
1.9% - 2.3%

The fair values of MSUs vested in 2018, 2017 and 2016 totaled $26.9 million, $31.4 million and $39.3 

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. Compensation expense, including the 
effect of forfeitures, is recognized over the applicable service period.

The following table summarizes our CSPU activity:

Unvested at December 31, 2017..........................................................................................
Granted (a)........................................................................................................................
Vested ..............................................................................................................................
Forfeited ...........................................................................................................................
Unvested at December 31, 2018 ..........................................................................................

Shares

105,000
12,000
(51,000)
(16,000)
50,000

(a)  These shares reflect the CSPUs issued in 2018 based upon the attainment of performance criteria set for 2017 in relation 

to CSPUs granted in 2017.

F- 51

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

The cash paid in settlement of CSPUs vested in 2018, 2017 and 2016 totaled $15.1 million, $16.6 million 

and $31.9 million, respectively.  

Performance-vested Restricted Stock Units (PUs)

PUs are granted to certain employees in the form of RSUs that may be settled in cash or shares of our common 

stock at the sole discretion of the Compensation and Management Development Committee of our Board of 
Directors. These awards are structured and accounted for the same way as the CSPUs, and vest in three equal 
annual increments beginning on the first anniversary of the grant date. The number of PUs granted represents the 
target number of units that are eligible to be earned based on the attainment of certain performance measures 
established at the beginning of the performance period, which ends on December 31 of each year. Participants may 
ultimately earn between 0% and 200% of the target number of units granted based on the degree of actual 
performance metric achievement. Accordingly, additional PUs may be issued or currently outstanding PUs may be 
cancelled upon final determination of the number of units earned. PUs settling in cash are based on the 30 calendar 
day average closing stock price through each vesting date once the actual vested and earned number of units is 
known. Compensation expense, including the effect of forfeitures, is recognized over the applicable service period.

The following table summarizes our PU activity:

Unvested at December 31, 2017..........................................................................................
Granted (a)........................................................................................................................
Vested ..............................................................................................................................
Forfeited ...........................................................................................................................
Unvested at December 31, 2018 ..........................................................................................

Shares

91,000
10,000
(52,000)
(1,000)
48,000

(a)  These shares reflect the PUs issued in 2018 based upon the attainment of performance criteria set for 2017 in relation to 

PUs granted in 2017.

All PUs that vested in 2018, 2017 and 2016 were settled in cash totaling $17.0 million, $11.5 million and 

$8.1 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. Compensation expense, 
including the effect of forfeitures, is recognized over the applicable service period.

F- 52

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, 2017..........................................................................
Granted (a)........................................................................................................
Vested ..............................................................................................................
Forfeited ...........................................................................................................
Unvested at December 31, 2018 ..........................................................................

Weighted
Average
Grant Date
Fair Value

—
317.09
—
315.70
317.26

Shares

— $
67,000 $
— $
(7,000) $
60,000 $

(a)  PSUs settled in stock granted in 2018 include awards granted in conjunction with our annual awards made in February 2018 
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. Compensation expense, including the effect of forfeitures, is recognized over the 
applicable service period.

The following table summarizes our PSUs that settle in cash activity:

Unvested at December 31, 2017 ...........................................................................................
Granted (a) .........................................................................................................................
Vested................................................................................................................................
Forfeited .............................................................................................................................
Unvested at December 31, 2018 ...........................................................................................

Shares

—
45,000
—
(5,000)
40,000

(a)  PSUs settled in cash granted in 2018 include awards granted in conjunction with our annual awards made in February 2018 
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. The fair value of all 
RSUs is based on the market value of our stock on the date of grant. Compensation expense, including the effect of 
forfeitures, is recognized over the applicable service period.

F- 53

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

The following table summarizes our RSU activity:

Unvested at December 31, 2017................................................................
Granted (a)..............................................................................................
Vested ....................................................................................................
Forfeited .................................................................................................
Unvested at December 31, 2018 ................................................................

Shares

832,000 $
581,000 $
(376,000) $
(134,000) $
903,000 $

Weighted
Average
Grant Date
Fair Value

291.85
316.32
299.94
298.81
303.18

(a)  RSUs granted in 2018 primarily represent RSUs granted in conjunction with our annual awards made in February 2018 and 
awards made in conjunction with the hiring of new employees. RSUs granted in 2018 also include approximately 9,000 
RSUs granted to our Board of Directors.

RSUs granted in 2017 and 2016 had weighted average grant date fair values of $293.41 and $268.52, 

respectively.

The fair values of RSUs vested in 2018, 2017 and 2016 totaled $111.7 million, $100.0 million and $104.6 

million, respectively.  

Employee Stock Purchase Plan (ESPP)

In June 2015 our shareholders approved the 2015 ESPP. The 2015 ESPP, which became effective on July 1, 
2015, replaced the Biogen Idec Inc. 1995 ESPP, which expired on June 30, 2015. The maximum aggregate number of 
shares of our common stock that may be purchased under the 2015 ESPP is 6.2 million. 

The following table summarizes our ESPP activity:

(In millions, except share amounts)
Shares issued under the 2015 ESPP ..................................
Cash received under the 2015 ESPP................................... $

2018

2017

2016

170,000

167,000

40.5 $

39.8 $

190,000
41.5

For the Years Ended December 31,

17.   

Income Taxes

Income Tax Expense

Income before income tax provision and the income tax expense consist of the following:

(In millions)
Income before income taxes (benefit):

For the Years Ended December 31,

2018

2017

2016

Domestic.......................................................................... $
Foreign .............................................................................

Total............................................................................. $

3,877.0 $
2,022.6
5,899.6 $

3,540.4 $
1,588.4
5,128.8 $

3,655.4
1,277.6
4,933.0

Income tax expense (benefit):
Current:

Federal ............................................................................. $
State................................................................................
Foreign .............................................................................
Total.............................................................................

Deferred:

Federal ............................................................................. $
State................................................................................
Foreign .............................................................................
Total.............................................................................
Total income tax expense................................................... $

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 $

1,304.3
55.1
52.9
1,412.3

(125.6)
(3.8)
(45.6)
(175.0)
1,237.3

F- 54

 
 
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 to U.S. taxation as 
GILTI, and includes base erosion prevention measures on non-U.S. earnings. These changes became effective in 
2018. During the fourth quarter of 2018 we elected to recognize deferred taxes for 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.

During the fourth quarter of 2017 we recognized within our provision for income taxes a $1.2 billion provisional 

estimate pursuant to the U.S. Securities and Exchange Commission (SEC) Staff Accounting Bulletin No. 118. Our 
provisional 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, 2018 and 2017, we have accrued income tax liabilities of $697.0 million and $989.6 
million, respectively, under the Transition Toll Tax. The decrease in this liability is primarily attributed to our 2018 
Transition Toll Tax payment of $85.0 million, the application by the U.S. Internal Revenue Service (IRS) of an 
approximately $150.0 million overpayment against the accrual and the impact of the $34.6 million net reduction 
described above. Of the amounts accrued as of December 31, 2018, no amounts are expected to be paid within one 
year due to the overpayment discussed above. The Transition Toll Tax will be paid in installments over an eight--year 
period, which started in 2018, and will not accrue interest.

Status of our Assessment

The final determination of the Transition Toll Tax and the remeasurement of our deferred assets and liabilities was 

completed during the fourth quarter of 2018 under SEC Staff Accounting Bulletin No. 118. Throughout 2018 
proposed regulations were issued by the IRS, which are expected to be finalized in 2019 and may have an impact on 
our income tax provision. We will assess the impact of any additional guidance when it is issued.

Unremitted Earnings

At December 31, 2018, we considered none of our earnings 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 related to foreign subsidiaries. These differences are estimated to total approximately $1.5 billion and 
primarily arose through the impacts of purchase accounting. These basis differences could reverse through sales of 
the foreign subsidiaries, as well as various other events, none of which are considered probable as of December 31, 
2018. The residual U.S. tax liability, if these differences would reverse, would be between $0.3 billion to $0.4 billion 
as of December 31, 2018.

Article 20 Procedure of ZINBRYTA

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 

F- 55

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

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 19, Collaborative and Other Relationships, to these consolidated financial 
statements.

Deferred Tax Assets and Liabilities

Significant components of our deferred tax assets and liabilities are summarized as follows:

(In millions)
Deferred tax assets:

As of December 31,

2018

2017

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 ................................................................... $

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) $

60.0
147.8
378.8
209.8
26.9
25.1
(16.6)
831.8

(250.7)
—
—
(107.9)
(358.6)

In addition to deferred tax assets and liabilities, we have recorded prepaid tax and deferred charges related to 

intra-entity transactions. As of December 31, 2018 and 2017, the total deferred charges and prepaid taxes were 
$239.2 million and $617.7 million, respectively. 

In October 2016 the FASB issued ASU 2016-16. 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 deferred 
tax assets of approximately $2.0 billion offset by a corresponding increase to deferred tax liabilities, related to an 
expected reduction in future U.S. foreign tax credits of approximately $1.5 billion and an 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 our retained earnings as these differences are related to inter-entity transactions. We will recognize 
incremental deferred income tax expense thereafter as these deferred tax assets and liabilities are utilized.

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

Tax Rate

A reconciliation between the U.S. federal statutory tax rate and our effective tax rate is summarized as follows:

Statutory rate .......................................................................
State taxes...........................................................................
Taxes on foreign earnings ......................................................
Credits and net operating loss utilization ................................
Purchased intangible assets ..................................................
Manufacturing deduction .......................................................
Other permanent items .........................................................
2017 Tax Act ........................................................................
GILTI ....................................................................................
Impairment of ZINBRYTA related tax assets ............................
Other ...................................................................................
Effective tax rate.................................................................

Changes in Tax Rate

For the Years Ended December 31,

2018

2017

2016

21.0%
0.6
(1.9)
(0.9)
1.2
—
0.3
2.1
1.6
—
0.2
24.2%

35.0%
0.8
(11.1)
(0.8)
1.4
(1.9)
0.7
22.9
—
0.9
—
47.9%

35.0%
0.9
(9.6)
(1.4)
1.2
(1.9)
0.5
—
—
—
0.4
25.1%

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. Included in taxes on foreign earnings in the above rate reconciliation for 2018 was an increase of 
approximately 350 basis points related to the sale of inventory, the tax effect of which had been included within 
prepaid taxes at December 31, 2017, at a higher effective tax rate. The effective tax rate for the year ended 
December 31, 2017, also reflected the impact of a favorable settlement related to a state tax matter in 2017.

For the year ended December 31, 2017, as compared to 2016, the most significant factors contributing to the 
increase in our effective tax rate was the effect of the enactment of the 2017 Tax Act and the impairment of certain 
ZINBRYTA related tax assets, both of which are discussed above. Excluding the effect of these items, our income tax 
rate would have decreased due to a lower percentage of our earnings being recognized in the U.S., a higher tax 
jurisdiction. The geographic split of our earnings was affected by milestone and upfront payments in the current year 
and the spin-off of our hemophilia business, partially offset by growth from the U.S. launch of SPINRAZA and 
increases in our revenues from anti-CD20 therapeutic programs in the U.S. In addition, in 2017 we earned a lower 
benefit from the Orphan Drug Credit due to the FDA's approval of SPINRAZA.

Tax Attributes

As of December 31, 2018, we had net operating losses and general business credit carry forwards for federal 

income tax purposes of approximately $1.0 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 also had research and investment credit carry 
forwards of approximately $133.1 million that begin to expire in 2019. For foreign income tax purposes, we had $2.2 
billion of net operating loss carryforwards that begin to expire in 2024.

In assessing the realizability of our deferred tax assets, we have considered whether it is more likely than not 

that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets 
is dependent upon the generation of future taxable income during the periods in which those temporary differences 
become deductible. In making this determination, under the applicable financial reporting standards, we are allowed 
to consider the scheduled reversal of deferred tax liabilities, projected future taxable income and tax planning 
strategies. Our estimates of future taxable income take into consideration, among other items, our estimates of 
future income tax deductions related to the exercise of stock options. Based upon the level of historical taxable 
income and income tax liability and projections for future taxable income over the periods in which the deferred tax 

F- 57

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

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,

2018

2017

2016

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 $

67.9
7.2
36.3
(13.3)
(1.4)
(64.3)
32.4

Our 2017 activity above reflects a refund received from a state, related to the settlement of an uncertain tax 

position.

We and our subsidiaries are routinely examined by various taxing authorities. We file income tax returns in 
various U.S. states and in U.S. federal and other foreign jurisdictions. With few exceptions, we are no longer subject 
to U.S. federal tax examination for years before 2013 or state, local or non-U.S. income tax examinations for years 
before 2010.

Included in the balance of unrecognized tax benefits as of December 31, 2018, 2017 and 2016, are $109.1 

million, $64.3 million and $26.9 million (net of the federal benefit on state issues), respectively, of unrecognized tax 
benefits that, if recognized, would affect the effective income tax rate in future periods. 

We recognize potential interest and penalties accrued related to unrecognized tax benefits in income tax 

expense. In 2018, 2017 and 2016 we recognized a net interest expense of $2.2 million, $4.8 million and $9.1 
million, respectively. We have accrued $13.8 million and $16.1 million for the payment of interest and penalties as 
of December 31, 2018 and 2017, respectively.

International Uncertain Tax Positions

We have made payments totaling approximately $60.0 million to the Danish Tax Authority (SKAT) for 

assessments received for 2009, 2011 and 2013 regarding withholding taxes and the treatment of certain 
intercompany transactions involving a Danish affiliate and another of our affiliates. We continue to dispute the 
assessments for all of these periods and believe that the positions taken in our historical filings are valid. It is 
reasonably possible that we will adjust the value of our uncertain tax positions related to Danish withholding taxes 
based on potential European court decisions expected in 2019 on similar matters.

Federal and State Uncertain Tax Positions

It is reasonably possible that we will adjust the value of our uncertain tax positions related to certain transfer 

pricing issues as we receive additional information from various taxing authorities, including reaching settlements 
with such authorities.

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

18.  

 Other Consolidated Financial Statement Detail

Supplemental Cash Flow Information

Supplemental disclosure of cash flow information for the years ended December 31, 2018, 2017 and 2016, is 

as follows:

(In millions)
Cash paid during the year for:

For the Years Ended December 31,

2018

2017

2016

Interest......................................................................... $
Income taxes ................................................................ $

243.2 $
1,007.1 $

281.7 $
1,066.4 $

281.2
1,642.2

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 will be 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. For additional information on the contingent payments to the former shareholders of Fumapharm AG 
and holders of their rights, please read Note 22, Commitments and Contingencies, to these consolidated financial 
statements. 

In connection with the construction of our large-scale biologics manufacturing facility in Solothurn, Switzerland, 
we accrued charges related to processing equipment and engineering services of approximately $100.0 million and 
$150.0 million in our consolidated balance sheets as of December 31, 2018 and 2017, respectively. For additional 
information on the construction of our manufacturing facility in Solothurn, Switzerland, please read Note 11, Property, 
Plant and Equipment, to these consolidated financial statements. 

In December 2016 we accrued $454.8 million related to the settlement and license agreement with Forward 

Pharma. For additional information on the settlement and license agreement with Forward Pharma, please read Note 
7, Intangible Assets and Goodwill, to these consolidated financial statements.

Other Income (Expense), Net

Components of other income (expense), net, are summarized as follows:

(In millions)
Interest income .................................................................. $
Interest expense ................................................................
Gain (loss) on investments, net ...........................................
Foreign exchange gains (losses), net....................................
Other, net...........................................................................

Total other income (expense), net ...................................... $

For the Years Ended December 31,

2018

2017

2016

112.5 $
(200.6)
119.5
(9.9)
(10.5)
11.0 $

78.5 $

(250.8)
(36.3)
6.3
(14.7)
(217.0) $

63.4
(260.0)
6.0
(9.8)
(18.3)
(218.7)

For the year ended December 31, 2018, gain (loss) on investments, net, as reflected in the table above, 

substantially relate to marketable equity securities held at December 31, 2018.

Other Current Assets

Other current assets were $687.6 million and $962.0 million as of December 31, 2018 and 2017, 

respectively, and include prepaid taxes totaling $271.2 million and $657.6 million, respectively.

Investments and other assets

Investments and other assets were $1,690.6 million as of December 31, 2018, including $680.6 million and 
$563.8 million related to our investments in Samsung Bioepis and Ionis, respectively. For additional information on 

F- 59

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

our collaboration arrangements with Samsung Bioepis and Ionis, please read Note 19, Collaborative and Other 
Relationships, to these consolidated financial statements.

Accrued Expenses and Other

Accrued expenses and other consists of the following:

(In millions)
Revenue-related reserves for discounts and allowances ................................ $
Current portion of contingent consideration obligations .................................
Employee compensation and benefits ..........................................................
Royalties and licensing fees ........................................................................
Construction in progress .............................................................................
Collaboration expenses...............................................................................
Other .........................................................................................................

Total accrued expenses and other.............................................................. $

As of December 31,

2018

2017

874.7 $
444.8
320.9
224.7
125.2
261.6
609.3
2,861.2 $

572.0
844.6
297.7
206.7
159.7
183.7
636.9
2,901.3

Other Long-term Liabilities

Other long-term liabilities were $1,389.4 million and $1,628.7 million as of December 31, 2018 and 2017, 

respectively, and include accrued income taxes totaling $791.4 million and $979.8 million, respectively.

19.  

 Collaborative and Other Relationships

In connection with our business strategy, we have entered into various collaboration agreements that provide 

us with rights to develop, produce and market products using certain know-how, technology and patent rights 
maintained by our collaborative partners. Terms of the various collaboration agreements may require us to make 
milestone payments upon the achievement of certain product research and development objectives and pay royalties 
on future sales, if any, of commercial products resulting from the collaboration.

Depending on the collaborative arrangement, we may record funding receivable or payable balances with our 
partners, based on the nature of the cost-sharing mechanism and activity within the collaboration. Our significant 
collaboration arrangements are discussed below.

Genentech, 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.

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

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.

Profit-sharing Formulas

RITUXAN Profit Share

Our current pretax co-promotion profit-sharing formula for RITUXAN provides for a 30% share on the first $50.0 

million of co-promotion operating profits earned each calendar year. Our share of annual co-promotion profits in 
excess of $50.0 million varies, as summarized in the table below, upon the following events:

Until GAZYVA First Non-CLL FDA Approval ..............................................................................

After GAZYVA First Non-CLL FDA Approval until First GAZYVA Threshold Date ............................

After First GAZYVA Threshold Date until Second GAZYVA Threshold Date .................................

After Second GAZYVA Threshold Date ...................................................................................

40.0%

39.0%

37.5%

35.0%

First Non-CLL GAZYVA FDA Approval means the FDA’s first approval of GAZYVA in an indication other than CLL.

First GAZYVA Threshold Date means the earlier of (i) the date of the First Non-CLL GAZYVA FDA approval if U.S. 
gross sales of GAZYVA for the preceding consecutive 12-month period were at least $150.0 million or (ii) the 
first day of the calendar quarter after the date of the First Non-CLL GAZYVA FDA Approval that U.S. gross sales 
of GAZYVA within any consecutive 12-month period have reached $150.0 million.

Second GAZYVA Threshold Date means the first day of the calendar quarter after U.S. gross sales of GAZYVA 
within any consecutive 12-month period have reached $500.0 million. The Second GAZYVA Threshold Date can 
be achieved regardless of whether GAZYVA has been approved in a non-CLL indication.

Our share of RITUXAN pre-tax profits in the U.S. decreased to 39% from 40% in February 2016 when GAZYVA 

was approved by the FDA as a new treatment for follicular lymphoma and further decreased to 37.5% in the third 
quarter of 2017 as gross sales of GAZYVA in the U.S. for the preceding 12-month period exceeded $150.0 million.

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.
F- 61

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

GAZYVA Profit Share

Our current pretax profit-sharing formula for GAZYVA provides for a 35% share on the first $50.0 million of 

operating profits earned each calendar year. Our share of annual profits in excess of $50.0 million varies, as 
summarized in the table below, upon the following events:

Until First GAZYVA Threshold Date ........................................................................................

After First GAZYVA Threshold Date until Second GAZYVA Threshold Date .................................

After Second GAZYVA Threshold Date ...................................................................................

39.0%

37.5%

35.0%

In 2018 the 37.5% GAZYVA profit-sharing threshold was met during the third quarter. In 2017 and 2016 our 

share of operating profits on GAZYVA was 35%.

In November 2017 the FDA approved GAZYVA in combination with chemotherapy, followed by GAZYVA alone, for 

people with previously untreated advanced follicular lymphoma.

Revenues from Anti-CD20 Therapeutic Programs

Revenues from anti-CD20 therapeutic programs are summarized as follows:

(In millions)
Biogen's share of pre-tax profits in the U.S. for RITUXAN and
GAZYVA, including the reimbursement of selling and
development expenses ........................................................ $
Other revenues from anti-CD20 therapeutic programs ............

For the Years Ended December 31,

2018

2017

2016

1,431.9 $

1,316.4 $

1,249.5

548.3

242.8

65.0

Total revenues from anti-CD20 therapeutic programs ....... $

1,980.2 $

1,559.2 $

1,314.5

In 2018 the 37.5% RITUXAN profit-sharing threshold was met during the first quarter. In 2017 the 39% profit-
sharing threshold was met during the first quarter and further decreased to 37.5% in the third quarter of 2017 as 
gross sales of GAZYVA in the U.S. for the preceding 12-month period exceeded $150.0 million. In 2016, the 39% 
profit-sharing threshold was met during the first quarter.

Prior to regulatory approval, we record our share of the expenses incurred by the collaboration for the 

development of anti-CD20 products in research and development expense in our consolidated statements of 
income. 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. 

Product Collaborations 

SPINRAZA

In January 2012 we entered into an exclusive worldwide option and collaboration agreement with Ionis to 
develop and commercialize SPINRAZA for the treatment of SMA. 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, 2018, 2017 and 2016, we recognized product revenues of $1,724.2 
million, $883.7 million and $4.6 million, respectively, on our sales of SPINRAZA. Under our agreement with Ionis, we 
make royalty payments to Ionis on annual worldwide net sales of SPINRAZA using a tiered royalty rate between 11% 
and 15%, which are recognized in cost of sales within our consolidated statements of income. Royalty cost of sales 
related to sales of SPINRAZA for the years ended December 31, 2018, 2017 and 2016, totaled $238.0 million, 
$112.4 million and $0.5 million, respectively.

During the third quarter of 2016, upon the exercise of our option to develop and commercialize SPINRAZA, we 

paid a $75.0 million license fee to Ionis, which was recorded as research and development expense in our 
consolidated statements of income. In addition, during 2017 we made milestone payments to Ionis totaling $150.0 
million related to the marketing approvals discussed above, which were capitalized in intangible assets, net in our 
consolidated balance sheets.  

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

During 2018 and 2017 no clinical trial payments were made to Ionis due to the completion of study activities. 

During 2016 we made clinical trial payments of $35.3 million related to the advancement of the program, which 
were recorded in investments and other assets in our consolidated balance sheets as they represented prepaid 
research and development expenditures. As of December 31, 2017, these prepaid research and development 
amounts were fully expensed as the services were provided.

For the years ending December 31, 2018, 2017 and 2016, $285.0 million, $234.5 million and $257.8 million, 

respectively, were reflected in total costs and expenses in our consolidated statements of income related to the 
advancement and commercialization of the program. 

Antisense Therapeutics

In December 2012 we entered into an agreement with Ionis for the development and commercialization of up 

to three therapeutic targets. 

Under this agreement, Ionis is responsible for global development of any product candidate through the 
completion of a Phase 2 trial and we will provide advice on the clinical trial design and regulatory strategy. We have 
an option to license the product candidate until completion of the Phase 2 trial. If we exercise our option, we will pay 
a license fee of up to $70.0 million to Ionis and assume global development, regulatory and commercialization 
responsibilities. Ionis is eligible to receive up to another $130.0 million in milestone payments upon the 
achievement of certain regulatory milestones as well as royalties on future sales if we successfully develop the 
product candidate after option exercise. 

Upon entering into this agreement, we made an upfront payment of $30.0 million to Ionis and agreed to make 

potential additional payments, prior to licensing, of up to $10.0 million based on the development of the selected 
product candidate as well as a mark-up of the cost estimate of the Phase 1 and Phase 2 trials. During 2015 we 
recognized this $10.0 million developmental milestone upon the selection of BIIB080 (also known as IONIS-MAPTRx), 
which is currently in Phase 1 development for the treatment of AD. 

Research Collaborations

2018 Ionis Agreement

In June 2018 we closed the 2018 Ionis Agreement, which is a 10-year exclusive agreement with Ionis to 
develop novel ASO drug candidates for a broad range of neurological diseases 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.

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 9, Financial Instruments, 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 

F- 63

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

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.

2017 SMA Collaboration Agreement

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

Upon entering into this agreement, we made a $25.0 million upfront payment to Ionis and we may pay Ionis up 

to $260.0 million in additional development and regulatory milestone payments if new 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 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 2013 agreement. 

For non-ALS antisense product candidates, Ionis will be responsible for global development through the 
completion of a Phase 2 trial and we will provide advice on the clinical trial design and regulatory strategy. For ALS 
antisense product candidates, we are responsible for global development, clinical trial design and regulatory 
strategy. We have an option to license a product candidate until completion of the Phase 2 trial. If we exercise our 
option, we will pay Ionis up to a $70.0 million license fee and assume global development, regulatory and 
commercialization responsibilities. Ionis could receive additional milestone payments upon the achievement of 
certain regulatory milestones of up to $130.0 million, plus additional amounts related to the cost of clinical trials 
conducted by Ionis under the collaboration, and royalties on future sales if we successfully develop the product 
candidate after option exercise. 

In December 2018 we exercised our option with Ionis and obtained a worldwide, exclusive, royalty-bearing 
license to develop and commercialize BIIB067 (IONIS-SOD1Rx), an investigational treatment for ALS with superoxide 
dismutase 1 (SOD1) mutations. In connection with the option exercise, we made an upfront payment of $35.0 
million to Ionis. 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 BIIB067 following the 
option exercise. During the years ending December 31, 2018, 2017 and 2016, we incurred milestones of $53.0 
million, $12.0 million and $5.5 million, respectively, related to the advancement of BIIB067 and other neurological 
targets identified.

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, and elenbecestat, the oral BACE (base amyloid cleaving 
enzyme) inhibitor, two Eisai product candidates for the treatment of AD (the BAN2401 and Elenbecestat 
Collaboration). Eisai serves as the global operational and regulatory lead for BAN2401 and elenbecestat and all 
costs, including research, development, sales and marketing expenses, are shared equally between us and Eisai; 
and, if applicable, upon marketing approval in major markets, such as the U.S., the E.U. and Japan, we and Eisai will 
co-promote BAN2401 and elenbecestat and share profits equally. In smaller markets, Eisai will distribute these 
products and pay us a royalty. 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 the treatment of AD (Aducanumab Option), 

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

and an option to jointly develop and commercialize one of our anti-tau monoclonal antibodies (Anti-Tau Option). Upon 
exercise of each of the Aducanumab Option and the Anti-Tau Option, a separate collaboration agreement would be 
entered into with Eisai on terms and conditions that mirror the BAN2401 and Elenbecestat Collaboration agreement. 
Eisai has not yet exercised its 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).

Under the Aducanumab Collaboration Agreement, the two companies will continue to jointly develop BAN2401 

and elenbecestat 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. The two 
companies will co-promote aducanumab with a region-based profit split and we will continue to lead the ongoing 
Phase 3 development of aducanumab.

For the years ended December 31, 2018, 2017 and 2016, sales and marketing expenses related to the 

BAN2401 and Elenbecestat Collaboration were immaterial. 

A summary of development 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 ........................................... $

For the Years Ended December 31,

2018

2017

2016

232.0 $

146.2 $

95.1

116.0 $

74.3 $

50.5

In addition, during the fourth quarter of 2016 we recognized a $50.0 million milestone payment related to the 

initiation of a Phase 3 trial for elenbecestat, which is included in research and development expense in our 
consolidated statements of income. We could pay Eisai up to an additional $625.0 million under the BAN2401 and 
Elenbecestat Collaboration based on the future achievement of certain development, regulatory and commercial 
milestones.

Aducanumab Collaboration Agreement

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. 

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.

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

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,

2018

2017

2016

264.8 $

268.7 $

209.5

234.6 $

268.7 $

209.5

50.6 $

23.6 $

18.3

27.3 $

23.6 $

18.3

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 Pharma 

Ireland Limited, a subsidiary of Alkermes plc (Alkermes), for diroximel fumarate (BIIB098), a novel fumarate in Phase 
3 development for the treatment of RMS. In December 2018 Alkermes submitted a New Drug Application (NDA) to 
the FDA for diroximel fumarate. Alkermes is seeking approval of diroximel fumarate under the 505(b)(2) regulatory 
pathway. If approved, we intend to market diroximel fumarate under the brand name VUMERITY. This name has been 
conditionally accepted by the FDA and will be confirmed upon approval.

Under this agreement, we received an exclusive, worldwide license to develop and commercialize diroximel 

fumarate and will pay Alkermes a mid-teens percentage royalty on potential worldwide net commercial sales of 
diroximel fumarate. Royalties payable on net commercial sales of diroximel fumarate are subject, under certain 
circumstances, to tiered minimum 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 diroximel fumarate, developed 
under the exclusive license from Alkermes. Alkermes will maintain responsibility for regulatory interactions with the 
FDA through the potential approval of the NDA for diroximel fumarate. 

Upon entering into this agreement, we made a $28.0 million upfront payment to Alkermes representing our 
share of diroximel fumarate development costs already incurred in 2017. Beginning in 2018 we became responsible 
for all development expenses related to diroximel fumarate. 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 diroximel 
fumarate. 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. 

We may also pay Alkermes an additional $150.0 million milestone payment upon a regulatory achievement 

related to diroximel fumarate under this agreement. For the years ended December 31, 2018 and 2017, we 
recorded $68.7 million and $80.3 million, respectively, in research and development expense in our consolidated 
statements of income related to this collaboration.

In connection with the license and collaboration agreement, we may also enter into a supply agreement with 

Alkermes for the commercial supply of diroximel fumarate and other products developed under the license and 
collaboration agreement.

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

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, a Phase 2 investigational therapy with potential in AD and 
PSP. BIIB092 is an antibody targeting tau, the protein that forms the deposits, or tangles, in the brain associated 
with AD and other neurodegenerative tauopathies such as PSP. 

Under this agreement, we received worldwide rights to BIIB092 and are responsible for the full development 

and potential commercialization of BIIB092 in AD and PSP. 

Upon entering into this agreement, we made an upfront payment of $300.0 million to BMS and we may pay 
BMS up to $410.0 million in additional milestone payments, and potential royalties. We also assumed all remaining 
obligations to the former shareholders of iPierian, Inc. (iPierian) related to BMS’s acquisition of iPierian in 2014. In 
June 2017 we recognized a $60.0 million developmental milestone payable to the former shareholders of iPierian 
upon dosing of the first patient in the Phase 2 study of BIIB092 for PSP and we may pay the former shareholders of 
iPierian up to $490.0 million in remaining milestone payments as well as potential royalties on net commercial 
sales. 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, 2018, we recorded $97.0 million 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 
agreement between Acorda and Alkermes, who acquired Elan Drug Technologies, the original party to the license with 
Acorda. 

For the years ending December 31, 2018, 2017 and 2016, total cost of sales related to royalties and 

commercial supply of FAMPYRA reflected in our consolidated statements of income were $36.5 million, $34.0 
million and $31.5 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. 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 (Collaboration Territory), where development and commercialization costs and profits were 
shared equally. Outside of the Collaboration Territory, we were solely responsible for development and 
commercialization of ZINBRYTA and paid a tiered royalty to AbbVie as a percentage of net sales in the low to high 
teens.

We were responsible for manufacturing and research and development activities in both the Collaboration 
Territory and outside the Collaboration Territory 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, 2018, 2017 and 2016, the collaboration incurred $32.4 million, 

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

$39.9 million and $48.6 million for research and development activities, respectively, for which we recognized $16.2 
million, $19.9 million and $24.3 million, respectively, in our consolidated statements of income. 

Research and development expense recognized in our consolidated statements of income for the year ended 

December 31, 2018, includes a $12.8 million charge recognized in the first quarter of 2018 related to the 
termination of research and development contracts and clinical trials as a result of the voluntary worldwide 
withdrawal of ZINBRYTA. 

Prior to regulatory approval, we also recognized $22.0 million of pre-commercialization expenses within our 
selling, general and administrative expense, which represented 50% of the collaboration's pre-commercialization 
costs for 2016. After ZINBRYTA was approved by the FDA and the EMA in 2016, we began to recognize our share of 
the collaboration activities within the Collaboration Territories as described below under Co-promotion Profits and 
Losses.

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. 

The collaboration began selling ZINBRYTA in the U.S. in the third quarter of 2016 and ceased selling ZINBRYTA 
in the U.S. in March 2018 in connection with the voluntary worldwide withdrawal of ZINBRYTA for RMS. For the years 
ended December 31, 2018, 2017 and 2016, we recognized a net reduction in revenues from collaborative and other 
relationships, a component of other revenues, of $8.6 million, $16.9 million and $21.9 million, respectively, to 
reflect our share of the overall net losses within the collaboration for each of those years.

The following table provides a summary of the U.S. collaboration and our share of the co-promotion losses on 

ZINBRYTA in the U.S.:

(In millions)
Product revenues, net...................................................................... $
Costs and expenses........................................................................

Co-promotion losses in the U.S. ....................................................... $
Biogen's share of co-promotion losses in the U.S. ............................. $

For the Year Ended December 31,

2018

2017

2016

7.5 $

53.1 $

25.3

17.8 $
8.6 $

92.6

39.5 $
16.9 $

6.1

50.0

43.9
21.9

In the E.U. and Canada, we recognized revenues on sales to third parties in product revenues, net in our 
consolidated statements of income. We began to recognize net product revenues on sales of ZINBRYTA in the E.U. 
and Canada in the third quarter of 2016 and first quarter of 2017, respectively, and ceased selling ZINBRYTA in the 
E.U. and Canada in March 2018 in connection with the voluntary worldwide withdrawal of ZINBRYTA for RMS. For the 
years ended December 31, 2018, 2017 and 2016, we recognized net product revenues on the sales of ZINBRYTA in 
the E.U. and Canada of $1.4 million, $52.7 million and $7.8 million, respectively. We also recorded the related cost 
of revenues and sales and marketing expenses to their respective line items in our consolidated statements of 
income as these costs were incurred. 

We reimbursed AbbVie for their 50% share of the co-promotion profits or losses in the E.U. and Canada. This 
reimbursement was recognized in collaboration profit (loss) sharing in our consolidated statements of income. For 
the year ended December 31, 2018, we recognized net profit-sharing income of $2.4 million to reflect AbbVie's 50% 
sharing of the net collaboration losses in the E.U. and Canada, as compared to net profit-sharing expense of $1.3 
million for the year ended December 31, 2017, and net profit-sharing income of $4.9 million for the year ended 
December 31, 2016.

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. 

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

C4 Therapeutics

In December 2018 we entered into a collaborative research and license agreement with C4 Therapeutics (C4T) 
to investigate the use of C4T’s novel protein degradation platform to discover and develop potential new treatments 
for neurological diseases, such as AD and Parkinson’s disease.

Under the agreement, C4T will provide expertise and research services in targeted protein degradation and we 

will provide neuroscience expertise and drug development capabilities. We will be responsible for the development 
and potential commercialization of any therapies resulting from this collaboration.

In connection with this agreement we made an upfront payment of $45.0 million to C4T, of which $17.0 million 

was recorded as research and development expense in our consolidated statements of income and $28.0 million 
was recorded as prepaid research and development expenditures within investments and other assets in our 
consolidated balance sheets. We may also pay C4T up to a total of $370.0 million in additional milestone payments 
as well as potential royalties on net commercial sales.

University of Pennsylvania

We have a collaboration and alliance with the University of Pennsylvania (UPenn) to advance gene therapy and 
gene editing technologies. In December 2018 we notified UPenn that we will be terminating certain programs under 
our collaboration and alliance with UPenn, including the development of therapeutic approaches that target the eye, 
skeletal muscle and central nervous system and research and validation of next generation gene transfer technology 
using adeno-associated virus (AAV) gene delivery vectors and exploring the expanded use of genome editing 
technology as a potential therapeutic platform. The termination of these programs will be effective in May 2019. 
This termination did not impact our collaboration with UPenn for the development of BIIB089 for the treatment of 
SMA.

Upon entering into this agreement we made an upfront payment of $20.0 million to UPenn, which was recorded 

as research and development expense in our consolidated statements of income, and made prepaid research and 
development expenditures of $15.0 million, which was recorded in investments and other assets in our consolidated 
balance sheets. During 2017 we made additional prepaid research and development expenditures to UPenn of 
$29.1 million related to the advancement of the programs under this agreement. These prepaid research and 
development amounts were expensed as the services were provided, of which no amounts remain as a prepaid 
asset as of December 31, 2018. 

We may be required to make future payments of over $137.0 million in research funding, options and 

milestone payments in relation to the BIIB089 program if we are successful and exercise our related options under 
this agreement. UPenn is also eligible to receive royalties in the mid-single digit percentages of annual net 
commercial sales upon successful development and commercialization of BIIB089. UPenn is no longer entitled to 
any potential future research funding, options and milestone payments from us in relation to the development of 
programs other than BIIB089.

For the years ended December 31, 2018, 2017 and 2016, we recorded $64.0 million, $33.0 million and $27.8 

million, respectively, in research and development expense in our consolidated statements of income related to this 
collaboration.  

Applied Genetic Technologies Corporation

We have a collaboration and license agreement to develop gene-based therapies for multiple ophthalmic 
diseases with Applied Genetic Technologies Corporation (AGTC). This collaboration focused on the development of 
BIIB087, an investigational AAV-based gene therapy for the treatment of X-linked Retinoschisis (XLRS), and BIIB088, 
an investigational AAV-based gene therapy for the treatment of X-Linked Retinitis Pigmentosa (XLRP). This 
collaboration also provided us with options to early stage discovery programs in two ophthalmic diseases and one 
non-ophthalmic condition.

In December 2018 we notified AGTC of the termination of our collaboration agreement with AGTC. The 
termination of this collaboration agreement will be effective in March 2019 and we will have no further involvement 
in the development of any of the programs under this collaboration. Accordingly, AGTC is no longer entitled to any 
potential development, regulatory and commercial milestone payments from us in relation to the development of 
these programs.

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

In connection with the collaboration and license agreement, we also received a manufacturing license under 

which we received an exclusive license to use AGTC’s proprietary technology platform to make AAV vectors for up to 
six genes, three of which are in AGTC’s discretion, in exchange for payment of milestones and royalties. Our 
termination of the collaboration agreement does not impact our rights under the manufacturing license.

Upon entering into the collaboration agreement we made an upfront payment of $124.0 million to AGTC. The 

$124.0 million upfront payment reflected a $30.0 million equity investment in AGTC, including a $7.5 million 
premium on our equity investment, prepaid research and development expenditures of $58.4 million and total 
licensing and other fees of $35.6 million. The $35.6 million in total licensing and other fees and the $7.5 million 
premium on our equity investment were recorded as a charge to research and development expense in our 
consolidated statements of income. The remaining $22.5 million equity investment and the $58.4 million of prepaid 
research and development expenditures were recorded in investments and other assets in our consolidated balance 
sheets. These prepaid research and development amounts were expensed as the services were provided. No 
amounts remain as a prepaid asset as of December 31, 2018. 

For the years ended December 31, 2018, 2017 and 2016, we recorded $39.5 million, $27.5 million and $26.5 

million, respectively, which were reflected in research and development expense in our consolidated statements of 
income related to this collaboration. 

Other

For the years ended December 31, 2018, 2017 and 2016, we entered into several research, discovery and 

other related arrangements that resulted in $5.0 million, $10.0 million and $10.3 million, respectively, recorded as 
research and development expense in our consolidated statements of income. 

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, 2018, 
our ownership percentage remains 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, depending on the results of Samsung Bioepis, we expect to restart recognizing 
our share of Samsung Bioepis' income (losses) and we will begin recognizing the amortization of certain basis 
differences resulting from our November 2018 investment.

As of December 31, 2018, the carrying value of our investment in Samsung Bioepis totaled 759.5 billion South 

Korean won ($680.6 million), which is classified as a component of investments and other assets within our 
consolidated balance sheet.

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. 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 

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

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 the E.U. in the fourth 
quarter of 2018.

We reflect revenues on sales of IMRALDI, FLIXABI and BENEPALI 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, 2018, 2017 and 2016, we recognized a net profit-sharing expense of $187.4 million, $111.0 million 
and $15.1 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 license agreement, a technical 

development services agreement and a manufacturing agreement with Samsung Bioepis. 

Under the license agreement, we granted Samsung Bioepis an exclusive license to use, develop, manufacture 

and commercialize biosimilar products created by Samsung Bioepis using Biogen product-specific technology. In 
exchange, we will receive single digit royalties on all biosimilar products developed and commercialized by Samsung 
Bioepis. 

Under the technical development services agreement, we provide Samsung Bioepis technical development and 

technology transfer services, which include, but are not limited to, cell culture development, purification process 
development, formulation development and analytical development. 

Under our manufacturing agreement, we manufacture clinical and commercial quantities of bulk drug substance 
of biosimilar products for Samsung Bioepis pursuant to contractual terms. Under limited circumstances, we may also 
supply Samsung Bioepis with quantities of drug product of biosimilar products for use in clinical trials through 
arrangements with third-party contract manufacturers. 

For the years ended December 31, 2018, 2017 and 2016, we recognized $96.4 million, $42.7 million and 

$20.2 million, respectively, in revenues under our 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. 

20.  

Investments in Variable Interest Entities

Consolidated Variable Interest Entities

Our consolidated financial statements include the financial results of variable interest entities in which we are 

the primary beneficiary. The following are our significant variable interest entities.

Neurimmune SubOne AG

In November 2007 we entered into a collaboration and license agreement with Neurimmune SubOne AG 

(Neurimmune) for the development and commercialization of antibodies for the treatment of AD, including 
aducanumab, our anti-amyloid beta antibody candidate for the treatment of AD. We are responsible for the 
development, manufacturing and commercialization of all collaboration products. This agreement is effective for the 
longer of the duration of certain patents relating to a licensed product or 12 years from the first commercial sale of 
any product using such a licensed compound. 

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

We consolidate the results of Neurimmune as we determined that we are the primary beneficiary of 
Neurimmune because we have the power through the collaboration to direct the activities that most significantly 
impact the entity’s economic performance and we are required to fund 100% of the research and development costs 
incurred in support of the collaboration. Under this agreement, we are also required to pay royalties on net sales of 
any resulting commercial products and make payments upon the achievement of certain milestone events. 

In October 2017 we amended the terms of our collaboration and license agreement with Neurimmune (as 
amended, the Neurimmune Agreement). Under the Neurimmune Agreement, we 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, will 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 interest 
in the fourth quarter of 2017 and the second quarter of 2018, as applicable. 

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, 2018, 2017 
and 2016, 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 terms of our 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 19, Collaborative and Other Relationships, to these 
consolidated financial statements.

Unconsolidated Variable Interest Entities

We have relationships with 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, 2018 and 2017, the carrying value of our investments in certain biotechnology companies 
representing potential unconsolidated variable interest entities totaled $28.7 million and $48.3 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. 

21. 

Litigation

We are currently involved in various claims and legal proceedings, including the matters described below. For 
information as to our accounting policies relating to claims and legal proceedings, including use of estimates and 
contingencies, please read Note 1, Summary of Significant Accounting Policies, to these consolidated financial 
statements.

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. 

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

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 Matters

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 March 2035. 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 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 Dusseldorf Regional Court relating to the 
German counterpart of the ‘510 Patent. No hearing has yet been set in these proceedings.

In August 2018 Biogen Idec Ltd. (Biogen UK) and Samsung Bioepis UK Limited filed an action in the United 
Kingdom Patents Court to revoke the United Kingdom counterpart of the '510 Patent. Fresenius Kabi has filed a 
counterclaim asserting infringement of the '510 Patent and seeking damages and an injunction to restrain 
infringement if the patent is found valid and infringed. A trial has been set for July 2019. In December 2018 Biogen 
B.V. and Samsung Bioepis UK Limited filed an action in the District Court of the Hague, Netherlands to revoke the 
Dutch counterpart of the ‘510 Patent. A trial has been set for October 2019. An estimate of the possible loss or 
range of loss in the above matters cannot be made at this time.

In October 2018 Gedeon Richter PLC asserted to Biogen and Samsung Bioepis UK Limited that IMRALDI 
infringes European Patent No. 3 212 667, which was issued in September 2018 and expires in October 2035. We 
dispute the assertion. An estimate of the possible loss or range of loss 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. Our motion to dismiss was denied in part. 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.

In May 2018 we were served with a qui tam action filed by SMSF, LLC on behalf of the U.S. and certain states 

in the U.S. District Court for the District of Massachusetts alleging activities by nurse-educators in violation of the 
federal False Claims Act and state law counterparts. The government declined to intervene, and we, other 
defendants and the U.S. moved to dismiss. In December 2018 the court dismissed the case with prejudice against 
the relator and without prejudice as to the U.S. and states. The period for an appeal has lapsed and we consider the 
matter closed.

In July 2018 we and certain other drug manufacturers and pharmacy benefit managers were served with a qui 
tam action filed by John Borzilleri on behalf of the U.S. and certain states in the U.S. District Court for the District of 
Rhode Island. The case alleges agreements with pharmacy benefit managers 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. We, the other defendants and the U.S. have moved to dismiss the case and the motions are pending. No trial 
date has been set. An estimate of the possible loss or range of loss cannot be made at this time.

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

Securities Litigation

We and certain current and former officers are defendants in an action filed by a shareholder in October 2016 

in the U.S. District Court for the District of Massachusetts alleging violations of federal securities laws under 15 
U.S.C §78j(b) and §78t(a) and 17 C.F.R. §240.10b-5 and seeking a declaration of the action as a class action and 
an award of damages, interest and attorneys' fees. In March 2018 the court dismissed the complaint with prejudice. 
The plaintiff's appeal is pending. An estimate of the possible loss or range of loss cannot be made at this time.

Other Matters

Hatch-Waxman Act Litigation relating to TECFIDERA Orange-Book Listed Patents

In June and July 2017, January, March, April, August and December 2018 and January 2019 we initiated patent 

infringement proceedings against multiple parties pursuant to the Drug Price Competition and Patent Term 
Restoration Act of 1984, commonly known as the Hatch-Waxman Act, in the U.S. District Courts.

Patent infringement proceedings pursuant to the Hatch-Waxman Act are pending against Accord Healthcare Inc., 

Alkem Laboratories Ltd., Amneal Pharmaceuticals LLC, Aurobindo Pharma U.S.A., Inc., Banner Life Sciences LLC, 
Caribe Holdings (Cayman) Co. Ltd. DBA Puracap Caribe, 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, Sun Pharma Global FZE, Torrent Pharmaceuticals Ltd., TWi Pharmaceuticals, Inc., 
Windlas Healthcare Pvt. Ltd. and Zydus Pharmaceuticals (USA) Inc. in the U.S. District Court for the District of 
Delaware and against Mylan Pharmaceuticals Inc. in the U.S. District Court for the Northern District of West Virginia.

A trial has been set for December 2019 in the Delaware actions, and a trial date has been set for February 

2020 in the West Virginia action. A trial date has not been set in the case against Banner Life Sciences LLC or the 
case against Hetero USA Inc. that was filed in January 2019.

Petition for Inter Partes Review filed by Mylan Pharmaceuticals, Inc.

In July 2018 Mylan Pharmaceuticals, Inc. filed a petition with the U.S. Patent Trial and Appeal Board seeking 
inter partes review of our U.S. Patent No. 8,399,514 (the '514 Patent). The '514 Patent includes claims covering the 
treatment of MS with 480 mg of dimethyl fumarate per day as provided for in our TECFIDERA label. On February 6, 
2019, the U.S. Patent Trial and Appeal Board instituted inter partes review of the '514 Patent.

Interference Proceeding with Forward Pharma

In April 2015 the USPTO declared an interference between Forward Pharma’s U.S. Patent Application No. 
11,576,871 and the '514 Patent. The U.S. Court of Appeals for the Federal Circuit affirmed the March 2017 ruling 
of the USPTO in favor of Biogen and in January 2019 denied Forward Pharma's petition for rehearing. For additional 
information regarding this matter, please read Note 7, Intangible Assets and Goodwill, to these consolidated financial 
statements.

European Patent Office Oppositions

In 2016 the EPO revoked our European patent number 2 137 537 (the '537 Patent). We have appealed to the 

Technical Boards of Appeal of the EPO and the appeal is pending. The '537 Patent includes claims covering the 
treatment of MS with 480 mg of dimethyl fumarate as provided for in our TECFIDERA label. 

In March 2018 the EPO revoked Forward Pharma’s European Patent No. 2 801 355, which was issued in May 

2015 and expires in October 2025. Forward Pharma has filed an appeal to the Technical Boards of Appeal of the 
EPO and the appeal is pending. The settlement and license agreement that we entered into with Forward Pharma in 
January 2017 did not resolve the issues pending in this proceeding and we and Forward Pharma intend to permit the 
Technical Boards of Appeal and the Enlarged Board of Appeal, if applicable, to make a final determination. For 
additional information regarding this matter, please read Note 7, 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 to the Polish Patent 

Office seeking to revoke Polish Patent Number 215263 (the Polish '263 Patent), the Polish patent corresponding to 
our European Patent Number 1 485 127 (the EU '127 Patent) ("Administration of agents to treat inflammation"). The 

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

Polish '263 Patent concerns administration of natalizumab (TYSABRI) to treat MS. The Polish '263 Patent was 
issued in 2013 and expires in February 2023. Swiss Pharma International AG, also affiliated with the Polpharma 
Group, filed actions in the District Court of The Hague (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 of 
the EU '127 Patent, which was issued in 2011 and also concerns administration of natalizumab (TYSABRI) to treat 
MS. The EU '127 Patent expires in February 2023. The Dutch and German counterparts were ruled invalid and we 
have appealed. No date for a hearing on the merits has been set in the Polish and Italian actions.

'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 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. 

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. 

In September 2018, following a trial against EMD Serono and Pfizer, the court granted Biogen's motion for 

judgment as a matter of law that the '755 Patent is infringed and valid and ordered a new trial on all damages 
issues. The court has not yet scheduled the trial on damages or a trial against Bayer and Novartis. In October 2018 
EMD Serono and Pfizer filed an appeal from the judgment in the U.S. Court of Appeals for the Federal Circuit, which 
is pending.

Government Matters

We have learned that state and federal governmental authorities are investigating our sales and promotional 

practices and have received related subpoenas. We are cooperating with the government.

We have received subpoenas and other requests from the federal government for documents and information 

relating to our relationship with non-profit organizations that assist patients taking drugs sold by Biogen and Biogen's 
co-pay assistance programs. We are cooperating with the government.

In July 2016 we received civil investigative demands from the federal government for documents and 

information relating to our treatment of certain service agreements with wholesalers when calculating and reporting 
Average Manufacturer Prices in connection with the Medicaid Drug Rebate Program. We are cooperating with the 
government.

In July 2017 we learned that the Prosecution Office of Milan is investigating our interactions with certain 

healthcare providers in Italy. We are cooperating with the government.

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.

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

22.  Commitments and Contingencies

Contingent 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 sales up to $2.0 billion and 25% on annual worldwide net sales that exceed $2.0 billion. Royalty 
payments to Elan and other third parties are recorded 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 the third quarter of 2016 we exercised our option to develop and commercialize SPINRAZA from Ionis. Under 

our agreement with Ionis, we make royalty payment to Ionis on annual worldwide net 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 19, Collaborative 
and Other Relationships, to these consolidated financial statements.

Contingent Consideration related to Business Combinations

In connection with our acquisitions of Convergence, Stromedix and BIN, we agreed to make additional 

payments based upon the achievement of certain milestone events. 

As the acquisitions of Convergence, Stromedix and BIN occurred after January 1, 2009, we recognized the 
contingent consideration liabilities associated with these transactions at their fair value on the acquisition date and 
revalue these obligations each reporting period. We may pay up to approximately $1.0 billion 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 paid 

$220.0 million upon closing of the transaction and agreed to pay an additional $15.0 million if a Fumapharm 
Product was approved for MS in the U.S. or E.U. In the second quarter of 2013 TECFIDERA was approved in the U.S. 
for MS by the FDA and we made the $15.0 million contingent payment. We are also required to make additional 
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 are due. These payments are accounted for as 
an increase to goodwill as incurred, in accordance with the accounting standard applicable to business combinations 
when we acquired Fumapharm AG. Any portion of the payment that is tax deductible was recorded as a reduction to 
goodwill. Payments are due within 60 days following the end of the quarter in which the applicable cumulative sales 
level was reached. 

During 2018 we paid $1.5 billion in contingent payments as we reached the $15.0 billion and $16.0 billion 

cumulative sales levels related to the Fumapharm Products in the fourth quarter of 2017 and the $17.0 billion, 
$18.0 billion and $19.0 billion cumulative sales levels related to the Fumapharm Products in the first, second and 
third quarters of 2018, respectively. In the fourth quarter of 2018 we achieved the $20.0 billion cumulative sales 
level threshold and accrued our last $300.0 million contingent payment related to the Fumapharm Products, which 
will be paid in the first quarter of 2019.

Contingent Development, Regulatory and Commercial Milestone Payments

Based on our development plans as of December 31, 2018, we could make potential future milestone 
payments to third parties of up to approximately $5.0 billion, including approximately $0.7 billion in development 
milestones, approximately $1.8 billion in regulatory milestones and approximately $2.5 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, 2018, such contingencies have not been recorded in our financial statements. Amounts related to 

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

contingent milestone payments are not considered contractual obligations as they are contingent on the successful 
achievement of certain development, regulatory approval or commercial milestones. 

Other Funding Commitments

As of December 31, 2018, 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 $27.0 million in our consolidated balance sheet for 
expenditures incurred by CROs as of December 31, 2018. We have approximately $655.0 million in cancellable 
future commitments based on existing CRO contracts as of December 31, 2018.

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, 2018, we have $117.7 million of liabilities associated with uncertain tax positions.

As of December 31, 2018 and 2017, we have accrued income tax liabilities of $697.0 million and $989.6 

million, respectively, under the Transition Toll Tax. Of the amounts accrued as of December 31, 2018, no amounts 
are expected to be paid within one year due to a $150.0 million overpayment of taxes in the current year. 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 17, Income Taxes, to these consolidated financial 
statements.

Solothurn, Switzerland Manufacturing Facility

We are building a large-scale biologics manufacturing facility in Solothurn, Switzerland. We expect this facility to 

be operational by the end of 2020. As of December 31, 2018, we had contractual commitments of $111.0 million 
related to the construction of this facility.

Leases

We rent laboratory and office space and certain equipment under non-cancelable operating leases. These 

lease agreements contain various clauses for renewal at our option and, in certain cases, escalation clauses 
typically linked to rates of inflation. Rental expense, net of sublease income under these leases, which terminate at 
various dates through 2028, amounted to $64.5 million, $65.3 million and $68.7 million in 2018, 2017 and 2016, 
respectively. In addition to rent, the leases may require us to pay additional amounts for taxes, insurance, 
maintenance and other operating expenses.

As of December 31, 2018, minimum rental commitments under non-cancelable leases, net of income from 

subleases, for each of the next five years and total thereafter were as follows:

(In millions)
Minimum lease payments........... $
Less: income from subleases (1)

Net minimum lease
payments ............................ $

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. 

Under certain of our lease agreements, we are contractually obligated to return leased space to its original 

condition upon termination of the lease agreement. At the inception of a lease with such conditions, we record an 
asset retirement obligation liability and a corresponding capital asset in an amount equal to the estimated fair value 
of the obligation. In subsequent periods, for each such lease, we record interest expense to accrete the asset 
retirement obligation liability to full value and depreciate each capitalized asset retirement obligation asset, both 
over the term of the associated lease agreement. Our asset retirement obligations were not significant as of 
December 31, 2018 or 2017.

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23.    Guarantees

As of December 31, 2018 and 2017, we did not have significant liabilities recorded for guarantees.

We enter into indemnification provisions under our agreements with other companies in the ordinary course of 

business, typically with business partners, contractors, clinical sites and customers. Under these provisions, we 
generally indemnify and hold harmless the indemnified party for losses suffered or incurred by the indemnified party 
as a result of our activities. These indemnification provisions generally survive termination of the underlying 
agreement. The maximum potential amount of future payments we could be required to make under these 
indemnification provisions is unlimited. However, to date we have not incurred material costs to defend lawsuits or 
settle claims related to these indemnification provisions. As a result, the estimated fair value of these agreements 
is minimal. Accordingly, we have no liabilities recorded for these agreements as of December 31, 2018 and 2017.

24.    Employee Benefit Plans

We sponsor various retirement and pension plans. Our estimates of liabilities and expenses for these plans 

incorporate a number of assumptions, including expected rates of return on plan assets and interest rates used to 
discount future benefits.

401(k) Savings Plan

We maintain a 401(k) Savings Plan, which is available to substantially all regular employees in the U.S. over the 

age of 21. Participants may make voluntary contributions. We make matching contributions according to the 401(k) 
Savings Plan’s matching formula. All matching contributions and participant contributions vest immediately. The 
401(k) Savings Plan also holds certain transition contributions on behalf of participants who previously participated 
in the Biogen, Inc. Retirement Plan. The expense related to our 401(k) Savings Plan primarily consists of our 
matching contributions.

Expense related to our 401(k) Savings Plan totaled $42.2 million, $42.6 million and $45.2 million for the years 

ended December 31, 2018, 2017 and 2016, 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, 2018 and 2017, totaled approximately $109.3 million and $109.8 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 2018 and 
2017 and 1.25% in 2016. 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, 2018 and 2017, the Swiss plan had an unfunded net pension obligation of $48.6 million and $48.3 
million, respectively, and plan assets that totaled $93.1 million and $83.7 million, respectively. In 2018, 2017 and 
2016, we recognized expense totaling $14.8 million, $12.3 million and $15.3 million, respectively, related to our 
Swiss plan, of which $1.3 million, $1.1 million and $2.2 million, respectively, was included in other income 
(expense), net.

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

The obligations under the German plans are unfunded and totaled $45.3 million and $43.5 million as of 

December 31, 2018 and 2017, respectively. Net periodic pension cost related to the German plans totaled $5.3 
million, $5.2 million and $4.2 million for the years ended December 31, 2018, 2017 and 2016, respectively, of 
which $1.5 million, $1.4 million and $1.1 million, respectively, was included in other income (expense), net.

25.    Segment Information

We operate as one operating segment, focused on discovering, developing and delivering worldwide innovative 

therapies for people living with serious neurological and neurodegenerative diseases. Our Chief Executive Officer 
(CEO), as the chief operating decision-maker, manages and allocates resources to the operations of our company on 
a total company basis. Our research and development organization is responsible for the research and discovery of 
new product candidates and supports development and registration efforts for potential future products. Our 
pharmaceutical, operations and technology organization manages the development of the manufacturing processes, 
clinical trial supply, commercial product supply, distribution, buildings and facilities. Our commercial organization is 
responsible for U.S. and international development of our commercial products. The company is also supported by 
corporate staff functions. Managing and allocating resources on a total company basis enables our CEO to assess 
the overall level of resources available and how to best deploy these resources across functions, therapeutic areas 
and research and development projects that are in line with our long-term company-wide strategic goals. Consistent 
with this decision-making process, our CEO uses consolidated, single-segment financial information for purposes of 
evaluating performance, forecasting future period financial results, allocating resources and setting incentive targets.

Enterprise-wide disclosures about product revenues, other revenues and long-lived assets by geographic area 
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, 2018 (In millions)
Product revenues from external customers.......... $ 6,800.5 $ 3,370.3 $
Revenues from anti-CD20 therapeutic programs .. $ 1,903.4 $
0.2 $
Other revenues from external customers............. $
32.7 $
457.0 $
Long-lived assets .............................................. $ 1,152.7 $ 2,442.8 $

Europe

U.S.

December 31, 2017 (In millions)
Product revenues from external customers.......... $ 7,017.1 $ 2,844.8 $
Revenues from anti-CD20 therapeutic programs .. $ 1,475.6 $
0.6 $
Other revenues from external customers............. $
67.8 $
249.5 $
Long-lived assets .............................................. $ 1,226.9 $ 1,948.2 $

Europe

U.S.

December 31, 2016 (In millions)
Product revenues from external customers.......... $ 7,050.4 $ 2,237.2 $
Revenues from anti-CD20 therapeutic programs .. $ 1,249.5 $
1.9 $
Other revenues from external customers............. $
71.5 $
224.7 $
Long-lived assets .............................................. $ 1,272.3 $ 1,221.1 $

Europe

U.S.

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

— $

Asia
160.1 $
— $
42.7 $
5.2 $

Other

Total

332.7 $10,354.7
83.0 $ 1,559.2
360.0
2.1 $ 3,182.4

— $

Asia
217.3 $
— $
20.2 $
7.0 $

Other

Total

313.0 $ 9,817.9
63.1 $ 1,314.5
316.4
1.4 $ 2,501.8

— $

Other

As of December 31, 2018, 2017 and 2016, approximately $1,748.5 million, $1,215.7 million and $545.5 

million, respectively, of our long-lived assets were related to the construction of our large-scale biologics 
manufacturing facility in Solothurn, Switzerland.

As of December 31, 2018, 2017 and 2016, approximately $646.5 million, $707.1 million and $643.6 million, 

respectively, of our long-lived assets were related to our manufacturing facilities in Denmark.

F- 79

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

For additional information on our large-scale biologics manufacturing facility in Solothurn, Switzerland, please 

read Note 11, Property, Plant and Equipment, to these consolidated financial statements.

26.    Quarterly Financial Data (Unaudited)

(In millions, except per share amounts)
2018
Product revenues, net.............................. $
Revenues from anti-CD20 therapeutic
programs ................................................ $
Other revenues ....................................... $
Total revenues ........................................ $
Gross profit (1) ....................................... $
Net income ............................................. $
Net income attributable to Biogen Inc. ...... $
Net income per share:

Basic earnings per share attributable to
Biogen Inc. ........................................... $
Diluted earnings per share attributable
to Biogen Inc. ....................................... $

Weighted-average shares used in
calculating:

Basic earnings per share attributable to
Biogen Inc. ...........................................
Diluted earnings per share attributable
to Biogen Inc. .......................................

First
Quarter

Second
Quarter

Third
Quarter

Fourth
Quarter

Total
Year

(a) (b)
2,523.5 $

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

(a) (b) (e)

(a) (f) (g) (h) (i)

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

(In millions, except per share amounts)

First
Quarter

Second
Quarter

Third
Quarter

Fourth
Quarter

Total
Year

2017
Product revenues, net.............................. $
Revenues from anti-CD20 therapeutic
programs ................................................ $
Other revenues ....................................... $
Total revenues ........................................ $
Gross profit (1) ....................................... $
Net income ............................................. $
Net income attributable to Biogen Inc. ...... $
Net income per share:

Basic earnings per share attributable to
Biogen Inc. ........................................... $
Diluted earnings per share attributable
to Biogen Inc. ....................................... $

Weighted-average shares used in
calculating:

Basic earnings per share attributable to
Biogen Inc. ...........................................
Diluted earnings per share attributable
to Biogen Inc. .......................................

(g)
2,380.1 $

340.6 $
90.0 $
2,810.7 $
2,426.1 $
747.5 $
747.6 $

(j) (k) (l)
2,639.7 $ 2,622.5 $

(m) (n) (o) (p)

2,712.4 $ 10,354.7

397.1 $
41.6 $

406.5 $
48.8 $
3,078.4 $ 3,077.8 $
2,712.2 $ 2,707.8 $
862.8 $ 1,226.1 $
862.8 $ 1,226.1 $

415.0 $
179.6 $

1,559.2
360.0
3,307.0 $ 12,273.9
2,797.8 $ 10,643.9
2,670.1
2,539.1

(166.3) $
(297.4) $

3.47 $

4.07 $

5.80 $

(1.41) $

11.94

3.46 $

4.07 $

5.79 $

(1.40) $

11.92

215.6

215.9

211.9

211.4

212.2

211.8

211.5

212.0

212.6

213.0

(1) Gross profit is calculated as total revenues less cost of sales, excluding amortization and impairment of acquired intangible 
assets.

F- 80

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

(a)  Net income and net income attributable to Biogen Inc. for the first, second, third and fourth quarters of 2018 
includes pre-tax charges related to (losses) gains recorded in relation to changes in the fair value of our 
strategic investments of $(6.4) million, $5.4 million, $141.2 million and $(12.2) million, respectively.

(b)  Net income and net income attributable to Biogen Inc. for the first, second and third quarters of 2018 include 

pre-tax charges to acquired IPR&D of $10.0 million, $75.0 million and $27.5 million, respectively, for upfront 
payments to Karyopharm, Pfizer and AliveGen, respectively, upon closing of the asset purchase transactions for 
BIIB100, BIIB104 and BIIB110, respectively, as the underlying assets had not yet reached technological 
feasibility.

(c)  Net income and net income attributable to Biogen Inc. for the second quarter of 2018 includes pre-tax charges 

to research and development expense of $486.2 million upon the closing of the 2018 Ionis Agreement. 
Included in this amount was a charge of $162.1 million reflecting the premium paid above fair value for the 
purchase of approximately 11.5 million shares of Ionis' common stock upon the closing of the 2018 Ionis 
Agreement.

(d)  Net income attributable to Biogen Inc. for the second quarter of 2018 includes a pre-tax charge to 

noncontrolling interest of $50.0 million 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.

(e)  Net income and net income attributable to Biogen Inc. for the third quarter of 2018 includes the impact of 
impairment charges totaling $189.3 million related to certain IPR&D assets associated with our vixotrigine 
program and an adjustment to the value of our contingent consideration obligations related to our vixotrigine 
program for the treatment of TGN to reflect the lower cumulative probabilities of success, which resulted in a 
gain of $89.6 million in the third quarter of 2018. 

(f) 

In late December 2018 we received feedback from the FDA regarding the design of the Phase 3 vixotrigine 
program for the treatment of TGN. Following this feedback, we are now planning to initiate the Phase 3 
vixotrigine program for the treatment of TGN and, as a result, we adjusted the fair value of our contingent 
consideration obligations related to our vixotrigine program for the treatment of TGN to reflect the increased 
probabilities of success and recognized a loss of $80.6 million in the fourth quarter of 2018.

(g)  Net income and net income attributable to Biogen Inc. for the fourth quarter of 2018 and the first quarter of 

2017 includes $176.8 million and $328.2 million, respectively, of impairment charges related to our intangible 
asset associated with our U.S. license to Forward Pharma's intellectual property, including Forward Pharma's 
intellectual property related to TECFIDERA.

(h)  Net income and net income attributable to Biogen Inc. for the fourth quarter of 2018 includes a net increase to 

income tax expense of $135.8 million reflecting the impact of electing to record deferred taxes on GILTI.

(i)  Net income and net income attributable to Biogen Inc. for the fourth quarter of 2018 includes an upfront 

payment of $35.0 million to Ionis, as we exercised our option to obtain a worldwide, exclusive, royalty-bearing 
license from Ionis to develop and commercialize BIIB067.

(j)  Net income and net income attributable to Biogen Inc. for the second quarter of 2017 includes a pre-tax charge 
to research and development expense of $300.0 million for an upfront payment made to BMS upon entering 
into our agreement to exclusively license BIIB092.

(k)  Net income and net income attributable to Biogen Inc. for the second quarter of 2017 includes a pre-tax charge 
to acquired IPR&D of $120.0 million for an upfront payment to Remedy upon closing of the asset purchase 
transaction for BIIB093.

(l)  Net income and net income attributable to Biogen Inc. for the second quarter of 2017 includes a pre-tax charge 

to research and development expense of $60.0 million for a developmental milestone that became payable to 
the former shareholders of iPierian upon dosing of the first patient in the Phase 2 study of BIIB092 for PSP.

(m) Net income attributable to Biogen Inc. for the fourth quarter of 2017 includes a pre-tax charge to noncontrolling 

interest of $150.0 million for a payment made to Neurimmune in exchange for a 15% reduction in the 

F- 81

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

previously negotiated royalty rates payable on products developed under the Neurimmune Agreement, including 
royalties payable on potential commercial sales of aducanumab.

(n)  Net income and net income attributable to Biogen Inc. for the fourth quarter of 2017 includes pre-tax charges 

to research and development expense of $28.0 million and $50.0 million for an upfront payment and a 
continuation payment, respectively, to Alkermes.

(o)  Net income and net income attributable to Biogen Inc. for the fourth quarter of 2017 includes a pre-tax charge 

to research and development expense of $25.0 million for an upfront payment to Ionis upon entering into a new 
collaboration agreement to identify new ASO drug candidates for the treatment of SMA.

(p)  Net income and net income attributable to Biogen Inc. for the fourth quarter of 2017 includes $1,173.6 million 
related to the provisions of the 2017 Tax Act, including a $989.6 million expense under the Transition Toll Tax.

For additional information on our acquisitions of BIIB100, BIIB104, BIIB110 and BIIB093, please read Note 2, 

Acquisitions, to these consolidated financial statements. For additional information on our collaboration 
arrangements with Ionis, BMS and Alkermes, please read Note 19, Collaborative and Other Relationships, to these 
consolidated financial statements. For additional information on our collaboration arrangement with Neurimmune, 
please read Note 20, Investments in Variable Interest Entities, to these consolidated financial statements. For 
additional information on the amortization and impairment of acquired intangible assets, including our IPR&D 
intangible asset related to our vixotrigine program for the treatment of TGN and our TECFIDERA settlement and 
license agreement, please read Note 7, Intangible Assets and Goodwill, to these consolidated financial statements. 
For additional information on the 2017 Tax Act, please read Note 17, Income Taxes, to these consolidated financial 
statements.

27.    Subsequent Events

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 will leverage Skyhawk’s SkySTAR technology 
platform with the goal of discovering innovative small molecule treatments for patients with neurological diseases, 
including MS and SMA. We will be responsible for the development and potential commercialization of any therapies 
resulting from this collaboration. 

In connection with this agreement, we made an upfront payment of $74.0 million to Skyhawk. We may also pay 
Skyhawk up to a total of approximately $2.0 billion in additional milestone payments as well as potential royalties on 
net commercial sales. We expect to record research and development expense of approximately $35.0 million in the 
first quarter of 2019 related to this collaboration.

F- 82

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, 2018 and 2017, 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, 2018, 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, 2018, 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, 2018 and 2017, and the results of its operations and its 
cash flows for each of the three years in the period ended December 31, 2018 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, 2018, based on criteria 
established in Internal Control - Integrated Framework (2013) issued by the COSO.

Change in Accounting Principle

As discussed in Note 1 to the consolidated financial statements, the Company changed 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.

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 

F- 83

includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, 
accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable 
assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance 
with generally accepted accounting principles, and that receipts and expenditures of the company are being made 
only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable 
assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s 
assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. 
Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may 
become inadequate because of changes in conditions, or that the degree of compliance with the policies or 
procedures may deteriorate.

/s/PricewaterhouseCoopers LLP
Boston, Massachusetts
February 6, 2019 

We have served as the Company's auditor since 2003.

F- 84

blank page in Form 10-K paper

Corporate Information

Board of Directors (as of April 22, 2019)

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

Michel Vounatsos
Chief Executive Officer, Biogen Inc.

Alexander J. Denner, Ph.D.
Founding Partner and Chief 
Investment Officer, Sarissa Capital

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

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

Eric K. Rowinsky, M.D.
President and Executive Chairman, 
RGenix, Inc.

Richard C. Mulligan, Ph.D.
Mallinckrodt Professor of Genetics, 
Emeritus, Harvard Medical School 
and Executive Vice Chairman,  
Sana Biotechnology

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

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

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
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
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

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.”

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216

Concept, design and realisation 
PETRANIX Corporate and Financial Communications AG
Adliswil, Zurich
www.petranix.com

Photography
Kate Parker, katetparker.com
Renee Sprink, reneesprink.com
Leah Cirker-Stark, leahcsphotography.com 
Jessica Tovar, jessicatovar.carbonmade.com
Dave White, davewhitephoto.com
Lara Woolfson, Studio Nouveau, thestudionouveau.com

Printing
Donnelley Financial Solutions, dfinsolutions.com

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02
02

HIGHLIGHTS & CONTENTS
HIGHLIGHTS & CONTENTS

CEO LETTER
CEO LETTER

STRATEGY
STRATEGY

CULTURE & ENGAGEMENT
CULTURE & ENGAGEMENT

PRODUCTS & PIPELINE
PRODUCTS & PIPELINE

EXECUTIVE COMMITTEE
EXECUTIVE COMMITTEE

PRODUCTS & PIPELINE

EXECUTIVE COMMITTEE

STRATEGY

CEO LETTER

HIGHLIGHTS & CONTENTS

CULTURE & ENGAGEMENT

Total Revenues ($ in millions)
Total Revenues ($ in millions)

Strong financial performance
S Strong financial performance
S Strong financial performance
Strong financial performance
T
T
02
H
H
G
G
I
I
S Strong financial performance
Strong financial performance
L
L
H
H
T
H
G
G
G
H
H
I
L
H
G

2015
2015
Total Revenues ($ in millions)

Other 4
Other 4
$662 
$662 
6% 
6% 

$638
$638
5%
5%

I
I

2014
2014
2018

$10,764
$10,764

$11,449
$11,449

$12,274
$12,274

$12,274

$13,453

$13,453
$13,453

$9,703
$9,703

2016
2016

2017
2017

2018
2018

2017

2018
2018

2017
2017

2017
2017

TYSABRI
TYSABRI
2017
2018
$1,864  $1,973
$1,864  $1,973
Other 4
17% 
17% 
$662 
6% 

19%
19%
$638
5%

SPINRAZA
SPINRAZA
Product Revenues 
$1,724  $884
$1,724  $884
9%
9%
16% 
16% 
($ in millions and % of total product revenues)

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

TECFIDERA
TECFIDERA
$4,274  $4,214
$4,274  $4,214
39% 
39% 

41%
41%

2018
2018

Interferon5
Interferon5
$2,363  $2,646
$2,363  $2,646
TECFIDERA
22% 
22% 
$4,274  $4,214
39% 

41%

26%
26%

I

H

$11,449

2016
GAAP Diluted EPS/Non-GAAP Diluted EPS 1
GAAP Diluted EPS/Non-GAAP Diluted EPS 1
2015
2018
2018
2014
2017
2017

$10,764
$21.582
$21.582

$9,703

$26.20
$26.20

$11.922
$11.922

$21.81
$21.81

2016
2016

$16.93
$16.93

$20.22
$20.22

$15.34
$15.34

2015
2015
GAAP Diluted EPS/Non-GAAP Diluted EPS 1
2014
2014
2018

$13.83
$13.83

$12.37
$12.37

$17.01
$17.01

$21.582

$26.20

9%

2017

+ 5 %
+ 5 %

SPINRAZA
$1,724  $884
16% 
Increase in total product revenues year over year
Increase in total product revenues year over year
TYSABRI
Interferon5
$1,864  $1,973
$2,363  $2,646
17% 
22% 

2018

19%

26%

+ 5 %

2017

$11.922

$21.81

Increase in total product revenues year over year

Free Cash Flow 1,3 ($ in millions) 
Free Cash Flow 1,3 ($ in millions) 
2016

$16.93

$20.22

2018
2018
2015

2017
2017
2014

2016
2016

$15.34

$17.01

$3,917
$3,917

$12.37

$2,484
$2,484

$13.83

$2,706
$2,706

2015
2015
Free Cash Flow 1,3 ($ in millions) 

$2,223
$2,223

62.5%
62.5%

Product Revenues by Region  
Product Revenues by Region  
(% of total product revenues)
(% of total product revenues)

  U.S. 
  U.S. 

  Rest of the world
  Rest of the world

2018
2018

37.5%
37.5%

67.8%
67.8%

2017
2017

32.2%
32.2%

Product Revenues by Region  
(% of total product revenues)

2014
2014
2018

2017

2016

2015

$2,279
$2,279

$3,917

$2,484

$2,706

$2,223

  U.S. 

  Rest of the world

71.8%
71.8%

2016
2016

28.2%
28.2%

62.5%

2018

37.5%

67.8%

2017

32.2%

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2014
1   Non-GAAP diluted earnings per share (EPS) and Free Cash Flow are  
1   Non-GAAP diluted earnings per share (EPS) and Free Cash Flow are  

$2,279

Non-GAAP financial measures. A reconciliation of GAAP to Non-GAAP  
Non-GAAP financial measures. A reconciliation of GAAP to Non-GAAP  
diluted EPS and Free Cash Flow amounts is set forth on pages 19–21  
diluted EPS and Free Cash Flow amounts is set forth on pages 19–21  
of this Annual Report.
of this Annual Report.

2   GAAP diluted EPS for 2018 and 2017 includes charges of $125 million and 
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 
$1,176 million, respectively, related to the impact of the Tax Cuts and Jobs 
Act of 2017.
Act of 2017.

3   Free Cash Flow for 2018 and 2017 reflects an increase in capital  
3   Free Cash Flow for 2018 and 2017 reflects an increase in capital  

expenditures related to the construction of our large-scale biologics 
expenditures related to the construction of our large-scale biologics 
manufacturing facility in Solothurn, Switzerland.
manufacturing facility in Solothurn, Switzerland.

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 19–21  
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 2018 and 2017 reflects an increase in capital  

expenditures related to the construction of our large-scale biologics 

4   For 2018 and 2017 Other includes product revenues from FAMPYRA, 
4   For 2018 and 2017 Other includes product revenues from FAMPYRA, 
FUMADERM, BENEPALI, FLIXABI and ZINBRYTA. For 2018 Other also 
FUMADERM, BENEPALI, FLIXABI and ZINBRYTA. For 2018 Other also 
includes product revenues from IMRALDI, which was launched in Europe 
includes product revenues from IMRALDI, which was launched in Europe 
in October 2018. For 2017 Other also includes product revenues from 
in October 2018. For 2017 Other also includes product revenues from 
ALPROLIX and ELOCTATE through January 31, 2017. No product revenues for 
ALPROLIX and ELOCTATE through January 31, 2017. No product revenues for 
ALPROLIX and ELOCTATE were recognized subsequent to February 1, 2017, 
ALPROLIX and ELOCTATE were recognized subsequent to February 1, 2017, 
the effective date of the spin-off of our hemophilia business.
the effective date of the spin-off of our hemophilia business.

28.2%

71.8%

2016

5  Interferon includes AVONEX and PLEGRIDY. 
5  Interferon includes AVONEX and PLEGRIDY. 

4   For 2018 and 2017 Other includes product revenues from FAMPYRA, 
FUMADERM, BENEPALI, FLIXABI and ZINBRYTA. For 2018 Other also 
includes product revenues from IMRALDI, which was launched in Europe 
in October 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.

manufacturing facility in Solothurn, Switzerland.

5  Interferon includes AVONEX and PLEGRIDY. 

 
 
 
 
 
 
 
 
 
 
 
 
i
i

i
i

B
B
B
B
o
o
o
o
g
g
g
g
e
e
e
e
n
n
n
n

2
2
2
2
0
0
0
0
1
1
1
1
8
8
8
8

A
A
A
A
n
n
n
n
n
n
n
n
u
u
u
u
a
a
a
a

l
l

l
l

R
R
R
R
e
e
e
e
p
p
p
p
o
o
o
o
r
r
r
r
t
t
t
t

2018 
2018 
2018 
2018 
ANNUAL 
ANNUAL 
ANNUAL 
ANNUAL 
REPORT
REPORT
REPORT
REPORT