Quarterlytics / Healthcare / Biotechnology / Xenon Pharmaceuticals

Xenon Pharmaceuticals

xene · NASDAQ Healthcare
Claim this profile
Ticker xene
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Employees 51-200
← All annual reports
FY2020 Annual Report · Xenon Pharmaceuticals
Sign in to download
Loading PDF…
XENON PHARMACEUTICALS INC. 
2020 ANNUAL REPORT 

 
 
 
To Our Shareholders: 

We hope that you and your families are safe and well. Xenon entered 2020 with an immense amount 
of momentum, which was building upon advancements within our proprietary programs and the 
transformative collaboration agreement signed with Neurocrine Biosciences at the end of 2019. 
However, with the onset of the COVID-19 pandemic, almost every aspect of how we live and work 
was instantly disrupted. Xenon, along with most other companies, faced the challenge of addressing 
and adjusting to the impacts of a developing global health crisis.  

While COVID-19’s impacts were and continue to be far-reaching, upon reflection, what particularly 
stands out to us is how our employees rallied around Xenon’s unwavering commitment to demonstrate 
our “Xenon CARES” values and unite in our mission to deliver innovative medicines to patients with 
epilepsy and other neurological diseases. We found ways to work remotely, support our colleagues, 
conduct clinical trials, collaborate with partners, and continue to make significant progress across all 
areas of our business.  

Subsequent to year-end, in March 2021, we successfully completed an over-subscribed $115 million 
public offering that has further strengthened our balance sheet. As a result, we believe we are well-
positioned to execute on our goals and reach key milestone events in 2021, including the topline Phase 
2b data read-out from our XEN1101 “X-TOLE” clinical trial as well as make important progress 
across our pipeline of proprietary and partnered programs.  

XEN1101 is a differentiated Kv7 potassium channel modulator being developed for the treatment of 
epilepsy and potentially other neurological disorders. Designed as a randomized, double-blind, 
placebo-controlled, multicenter study, Xenon’s “X-TOLE” study is an ongoing Phase 2b clinical trial 
to evaluate the clinical efficacy, safety, and tolerability of XEN1101 administered as adjunctive 
treatment in approximately 300 adult patients with focal epilepsy. The primary endpoint is the median 
percent change in monthly focal seizure frequency from baseline compared to treatment period of 
active versus placebo. We anticipate that patient randomization will be completed in the first half of 
2021, with topline data anticipated in the third quarter of 2021. In addition, Xenon has an ongoing 
collaboration with the Icahn School of Medicine at Mount Sinai in New York to facilitate an 
investigator-sponsored Phase 2 proof-of-concept clinical trial of XEN1101 for the treatment of major 
depressive disorder and anhedonia. 

XEN496, a Kv7 potassium channel modulator, is a proprietary pediatric formulation of the active 
ingredient ezogabine being developed for the treatment of KCNQ2 developmental and epileptic 
encephalopathy (KCNQ2-DEE). Xenon has received Fast Track and Orphan Drug designations for 
XEN496 for the treatment of seizures associated with KCNQ2-DEE from the U.S. Food and Drug 
Administration (FDA), as well as orphan medicinal product designation from the European 
Commission. We have now initiated a Phase 3 randomized, double-blind, placebo-controlled, parallel 
group, multicenter clinical trial, called the “EPIK” study, evaluating the efficacy, safety, and 
tolerability of XEN496 administered as adjunctive treatment in approximately 40 pediatric patients 
aged one month to less than 6 years with KCNQ2-DEE.  

XEN007 (active ingredient flunarizine) is a CNS-acting Cav2.1 and T-type calcium channel 
modulator that is being studied in treatment-resistant childhood absence epilepsy (CAE) and 
potentially other neurological disorders. A physician-led, Phase 2 proof-of-concept study is ongoing to 
examine the potential clinical efficacy, safety, and tolerability of XEN007 as an adjunctive treatment 
in pediatric patients diagnosed with treatment-resistant CAE. Given the impact of COVID-19 on 
recruitment, we continue to work with our collaborator to expand the study to include additional sites. 
We anticipate that topline results from a larger data set will be available in the second half of 2021 and 
expect to make a decision in 2021 regarding the future development of XEN007 in CAE.  

 
Discovery / Pre-Clinical Work: Xenon has positioned itself as a leader in small molecule ion channel 
drug discovery. Our research team continues to build a robust pipeline of pre-clinical candidates 
related to several sodium and potassium channel targets, and we expect to highlight these novel pre-
clinical programs as they advance into development. 

Partnered Programs 

NBI-921352: We have an ongoing collaboration with Neurocrine Biosciences to develop treatments 
for epilepsy. Neurocrine Biosciences has an exclusive license to XEN901, now known as NBI-
921352, a clinical stage selective Nav1.6 sodium channel inhibitor with potential in SCN8A 
developmental and epileptic encephalopathy (SCN8A-DEE) and other forms of epilepsy. The FDA 
has provided feedback on an Investigational New Drug application submitted by Neurocrine 
Biosciences in support of a Phase 2 clinical trial in SCN8A-DEE patients. Based on this feedback, 
Neurocrine Biosciences anticipates initiating a Phase 2 clinical trial in adolescent patients (aged 12 
years and older) with SCN8A-DEE in the third quarter of 2021, and the trial protocol will be amended 
to include younger pediatric patients (aged 2-11 years) with SCN8A-DEE as soon as the FDA has 
reviewed and approved additional non-clinical information. In parallel, Neurocrine Biosciences is 
advancing clinical plans to develop NBI-921352 for the treatment of adult focal epilepsy and expects 
to initiate a Phase 2 clinical trial in 2021. 

FX301: Flexion Therapeutics acquired the global rights to develop and commercialize XEN402, a 
Nav1.7 inhibitor also known as funapide, which is formulated for extended release from a 
thermosensitive hydrogel. The initial development of FX301 is intended to support administration as a 
peripheral nerve block for control of post-operative pain. Flexion expects topline results in late 2021 
from a Phase 1b proof-of-concept trial evaluating the safety and tolerability of FX301 administered as 
a single-dose, popliteal fossa block (a commonly used nerve block in foot and ankle-related surgeries) 
in patients undergoing bunionectomy. 

We are immensely proud of the work of Xenon’s dedicated employees, resulting in one of the most 
robust neurology-focused therapeutic pipelines in our industry. We previously announced a leadership 
transition plan to take place in mid-2021, and we believe we have all the elements in place to execute 
on our goals to develop and deliver innovative medicines to improve the health of patients with 
epilepsy and other neurological disorders. The entire Xenon team is grateful for the strategic input 
from the directors on our Board. Finally, we thank our shareholders for their continued support and 
look forward to keeping you update on our progress throughout 2021. 

/s/ Simon N. Pimstone 

/s/ Michael M. Tarnow 

Simon N. Pimstone  
Chief Executive Officer 

Michael M. Tarnow 
Board Chair 

Certain statements contained in this letter may constitute forward-looking statements within the meaning of Section 27A of 
the Securities Act of 1933, as amended, Section 21E of the Securities Exchange Act of 1934, as amended, and Canadian 
securities laws. A detailed discussion of such forward-looking statements and the related risks and uncertainties is included 
in our Annual Report on Form 10-K included herewith. 

.;

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K 

(Mark One) 
☒

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2020
OR

☐

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

Commission File Number 001-36687 

XENON PHARMACEUTICALS INC.

(Exact Name of Registrant as Specified in its Charter)

Canada
(State or other jurisdiction of
incorporation or organization)
200-3650 Gilmore Way
Burnaby, British Columbia
(Address of principal executive offices)

98-0661854
(I.R.S. Employer
Identification No.)

V5G 4W8
(Zip Code)

Registrant’s telephone number, including area code: (604) 484-3300 

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

Title of each class
Common Shares, without par value

Trading
Symbol(s)
XENE

Name of each exchange on which registered
The Nasdaq Stock Market LLC
(The Nasdaq Global Market)

Securities registered pursuant to Section 12(g) of the Act: None 

Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. YES ☐ NO ☒ 

Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or 15(d) of the Act. YES ☐ NO ☒ 

Indicate by check mark whether the Registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the 
preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 
90 days. YES ☒ NO ☐ 

Indicate by check mark whether the Registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T 
(§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit such files). YES ☒ NO ☐ 

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

Large accelerated filer

Non-accelerated filer

Emerging growth company

  ☐

  ☒

☐

   Accelerated filer

   Smaller reporting 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 has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over 
financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit 
report.  ☐

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). YES ☐ NO ☒ 
The aggregate market value of the voting and non-voting common equity held by non-affiliates of the Registrant, based on the closing price of the common shares on 
The Nasdaq Global Market on June 30, 2020, was approximately $382.9 million. Common shares held by each executive officer and director and by each other person 
who may be deemed to be an affiliate of the Registrant, have been excluded from this computation.  This determination of affiliate status is not necessarily a conclusive 
determination for other purposes.

The number of common shares of the Registrant outstanding as of February 26, 2021 was 35,809,247. 

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrant’s Definitive Proxy Statement relating to the 2021 Annual Meeting of Shareholders, which will be filed with the Securities and Exchange 
Commission subsequent to the date hereof, are incorporated by reference into Part III of this Report. Such Proxy Statement will be filed with the Securities and 
Exchange Commission not later than 120 days following the end of the Registrant’s fiscal year ended December 31, 2020. 

 
 
 
 
 
XENON PHARMACEUTICALS INC.

FORM 10-K

For the Fiscal Year Ended December 31, 2020

Table of Contents 

PART I .....................................................................................................................................................................................
Item 1.
Business .................................................................................................................................................................
Item 1A. Risk Factors ...........................................................................................................................................................
Item 1B. Unresolved Staff Comments..................................................................................................................................
Properties ...............................................................................................................................................................
Item 2.
Legal Proceedings..................................................................................................................................................
Item 3.
Mine Safety Disclosures........................................................................................................................................
Item 4.

PART II....................................................................................................................................................................................
Item 5.

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

Securities...........................................................................................................................................................
Selected Financial Data .........................................................................................................................................
Item 6.
Item 7.
Management’s Discussion and Analysis of Financial Condition and Results of Operations ...............................
Item 7A. Quantitative and Qualitative Disclosure About Market Risk................................................................................
Financial Statements and Supplementary Data .....................................................................................................
Item 8.
Item 9.
Changes in and Disagreements With Accountants on Accounting and Financial Disclosure ..............................
Item 9A. Controls and Procedures........................................................................................................................................
Item 9B. Other Information ..................................................................................................................................................

PART III ..................................................................................................................................................................................
Directors, Executive Officers and Corporate Governance ....................................................................................
Item 10.
Executive Compensation .......................................................................................................................................
Item 11.
Security Ownership of Certain Beneficial Owners and Management and Related Shareholder Matters .............
Item 12.
Certain Relationships and Related Transactions, and Director Independence......................................................
Item 13.
Principal Accountant Fees and Services................................................................................................................
Item 14.

PART IV ..................................................................................................................................................................................
Exhibits, Financial Statement Schedules...............................................................................................................
Item 15.
Form 10-K Summary.............................................................................................................................................
Item 16.

Signatures.................................................................................................................................................................................

Page

1
3
25
62
62
62
62

63

63
64
65
75
76
98
98
99

100
100
100
100
100
100

101
101
104

105

-i-

Forward-Looking Statements

PART I

Certain statements contained in this Annual Report on Form 10-K may constitute forward-looking statements within the 

meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as 
amended and Canadian securities laws. The words or phrases “would be,” “will allow,” “intends to,” “may,” “believe,” “plan,” “will 
likely result,” “are expected to,” “will continue,” “is anticipated,” “estimate,” “project,” or similar expressions, or the negative of such 
words or phrases, are intended to identify “forward-looking statements.” You should read these statements carefully because they 
discuss future expectations, contain projections of future results of operations or financial condition, or state other “forward-looking” 
information. These statements relate to our future plans, objectives, expectations, intentions and financial performance and the 
assumptions that underlie these statements. These forward-looking statements include, but are not limited to:

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

our ability to identify additional products or product candidates either from our internal research efforts or though acquiring 
or in-licensing other product candidates or technologies;

the initiation, timing, cost, progress and success of our research and development programs, pre-clinical studies, and clinical 
trials;

our ability to advance product candidates into, and successfully complete, clinical trials;

our ability to recruit sufficient numbers of patients for our current and future clinical trials for orphan or more common 
indications;

the direct and indirect impact of COVID-19 on our business and operations, including supply chain, manufacturing, 
research and development costs, clinical trial conduct, clinical trial data and employees;

our ability to achieve profitability;

our ability to obtain funding for our operations;

our ability to receive milestones, royalties and sublicensing fees under our collaborations, and the timing of such payments;

the timing and magnitude of potential milestone payments under our product acquisition and in-licensing agreements;

the implementation of our business model and strategic plans;

our ability to develop and commercialize product candidates for orphan and niche indications or more common indications 
independently;

our ability to advance XEN007 and potentially other future product candidates directly into Phase 2 or later stage clinical 
trials;

our pre-commercial, commercialization, marketing, and manufacturing capabilities and strategy;

our ability to identify drug targets;

our ability to protect our intellectual property and operate our business without infringing upon the intellectual property 
rights of others;

our expectations regarding federal, state and foreign regulatory requirements;

the therapeutic benefits, effectiveness and safety of our product candidates;

the accuracy of our estimates of the size and characteristics of the markets that may be addressed by our products and 
product candidates;

the rate and degree of market acceptance and clinical utility of any future products;

the timing of, and our and our collaborators’ ability to obtain and maintain, regulatory approvals for our product candidates;

our ability to maintain and establish collaborations;

our expectations regarding market risk, including interest rate changes and foreign currency fluctuations;

our belief in the sufficiency of our cash, cash equivalents and marketable securities to meet our needs for at least the next 12 
months;

our ability to engage and retain the employees required to grow our business;

our future financial performance and projected expenditures;

1

•

•

developments relating to our competitors and our industry, including the success of competing therapies that are or become 
available; and

estimates of our expenses, future revenue, capital requirements and our needs for additional financing.

These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially 

from those anticipated in the forward-looking statements. Factors that might cause such a difference include, but are not limited to, 
those discussed in this report in Part I, Item 1A — “Risk Factors,” and elsewhere in this report. Forward-looking statements are based 
on our management’s beliefs and assumptions and on information currently available to our management. These statements, like all 
statements in this report, speak only as of their date, and we undertake no obligation to update or revise these statements in light of 
future developments. In this report, “we,” “our,” “us,” “Xenon,” and “the Company” refer to Xenon Pharmaceuticals Inc. and its 
subsidiary. Unless otherwise noted, all dollar amounts in this report are expressed in United States dollars.

In addition, statements that “we believe” and similar statements reflect our beliefs and opinions on the relevant subject. These 

statements are based upon information available to us as of the date of this Annual Report on Form 10-K, and although we believe 
such information forms a reasonable basis for such statements, such information may be limited or incomplete, and our statements 
should not be read to indicate that we have conducted a thorough inquiry into, or review of, all potentially available relevant 
information. These statements are inherently uncertain, and investors are cautioned not to unduly rely upon these statements.

This Annual Report on Form 10-K includes our trademarks and registered trademarks, including the Xenon logo and other 

trademarks or service marks of Xenon. Each other trademark, trade name or service mark appearing in this Annual Report on Form 
10-K belongs to its holder.

Risks Factor Summary

Our business is subject to numerous risks and uncertainties, including those highlighted in the section of this report captioned 

“Risk Factors.” The following is a summary of the principal risks we face:

• We have incurred significant losses since our inception and anticipate that we will continue to incur significant losses for 

the foreseeable future;

• We will likely need to raise additional funding, which may not be available on acceptable terms, if at all. Failure to obtain 
this necessary capital when needed may force us to delay, limit or terminate our product development efforts or other 
operations;

•

•

Clinical drug development involves a lengthy and expensive process with uncertain timelines and uncertain outcomes. If 
clinical trials are prolonged, delayed, not completed, unsuccessful or inconclusive, we could experience material harm to 
our business and the market price of our common shares. In addition, we, or our collaborators, may be unable to 
commercialize our product candidates on a timely basis or at all;

Clinical trials may fail to demonstrate adequately the safety and efficacy of our or our collaborators’ product candidates at 
any stage of clinical development. Terminating the development of any of our or our collaborators’ product candidates 
could materially harm our business and the market price of our common shares;

• We or our collaborators may find it difficult to enroll patients in our clinical studies, including for ultra-orphan, orphan or 

niche indications, which could delay or prevent clinical studies of our product candidates;

•

•

The regulatory approval processes of the FDA, EMA, Health Canada and regulators in other jurisdictions are lengthy, time-
consuming and inherently unpredictable. If we, or our collaborators, are unable to obtain regulatory approval for our 
product candidates in a timely manner, or at all, our business will be substantially harmed;

If, in the future, we are unable to establish our own sales, marketing and distribution capabilities or enter into agreements 
for these purposes, we may not be successful in independently commercializing any future products;

• Our prospects for successful development and commercialization of our partnered products and product candidates are 

dependent upon the research, development and marketing efforts of our collaborators;

• We depend on our collaborative relationship with Neurocrine Biosciences to further develop and commercialize NBI-
921352, and if our relationship is not successful or is terminated, we may not be able to effectively develop and/or 
commercialize NBI-921352, which could have a material adverse effect on our business;

• We intend to rely on third-party manufacturers to produce our clinical product candidates and commercial supplies. Any 
failure by a third-party manufacturer to produce acceptable supplies for us may delay or impair our ability to initiate or 
complete our clinical trials, gain regulatory approvals or commercialize approved products;

2

• We rely on third parties to conduct our pre-clinical studies and clinical trials. If these third parties do not successfully carry 
out their contractual duties including to comply with applicable laws and regulations or meet expected deadlines, our 
business could be substantially harmed;

• We could be unsuccessful in obtaining or maintaining adequate patent protection for one or more of our products or product 

candidates;

• We may not be able to protect our intellectual property rights throughout the world;
• Our business and operations could suffer in the event of an information security incident such as a cybersecurity breach, 

system failure, or other compromise of our systems or those of a contractor or vendor;

• Health pandemics or epidemics, including the COVID-19 pandemic and other public health crises may materially and 

adversely affect our business, financial condition and results of operations; 

•

•

The market price of our common shares may be volatile, and purchasers of our common shares could incur substantial 
losses;

Future sales and issuances of our common shares, preferred shares, or rights to purchase common shares, including 
warrants or pursuant to our equity incentive plans, could cause you to incur dilution and could cause the market price of our 
common shares to fall; and

• We are at risk of securities class action litigation.

Item 1. Business 

We are a clinical stage biopharmaceutical company committed to developing innovative therapeutics to improve the lives of 
patients with neurological disorders. We are advancing a novel product pipeline of neurology-focused therapies to address areas of 
high unmet medical need, with a focus on epilepsy. In addition to our proprietary product candidates, we also have partnered programs 
with several pharmaceutical companies, including Neurocrine Biosciences, Inc., or Neurocrine Biosciences, Flexion Therapeutics, 
Inc., or Flexion, and Genentech, a member of the Roche Group.

Our Strategy

Our goal is to build a fully-integrated and profitable biopharmaceutical company that discovers, develops, and commercializes 

innovative therapeutics to improve the health of patients with epilepsy and other neurological disorders. 

Key components of our strategy include:

•

Leveraging our discovery capabilities – which were founded upon our understanding of the genetics of channelopathies 
combined with proprietary biology and medicinal chemistry assets and know-how – to identify product candidates for 
development, drug targets and/or new indications for our existing product candidates;

• Using a scientifically driven and patient-focused approach, advance selected proprietary product candidates through clinical 

development, by setting clinically meaningful endpoints;

•

•

•

•

Pursuing specific development strategies as needed, such as those focused on using a “precision medicine” approach to 
address rare pediatric disorders, as well as those targeting broader patient populations;

Selectively establishing collaborations that allow us to potentially expand our internal capabilities and/or address broader 
commercial opportunities than may be possible independently;

Identifying opportunities to further expand our pipeline though indication expansion or in-licensing of external product 
candidates; and 

Commercializing product candidates for orphan and niche indications or those targeting broader patient populations, alone 
or in collaboration with others.

3

Our Product Candidates

XEN1101, A Kv7 Potassium Channel Modulator for the Treatment of Epilepsy

XEN1101 is a differentiated Kv7 potassium channel modulator being developed for the treatment of epilepsy and potentially 

other neurological disorders. We acquired XEN1101 from 1st Order Pharmaceuticals pursuant to an asset purchase agreement in April 
2017. For a more detailed description of the terms of this agreement with 1st Order Pharmaceuticals, see “—Collaborations, 
Commercial and License Agreements” below. 

The Kv7 potassium channel mechanism has been clinically validated with ezogabine, an earlier generation Kv7 modulator that 

was approved by the U.S. Food and Drug Administration, or FDA, as an adjunctive treatment for adults with focal seizures with or 
without secondary generalization. XEN1101’s unique composition is chemically designed to improve upon potency, selectivity and 
pharmacokinetics, or PK, of ezogabine, and is not expected to have ezogabine’s composition-specific tissue pigmentation effects.

Clinical Development

We completed a Phase 1 clinical trial that evaluated the safety, tolerability and PK of both single ascending doses, or SAD, and 

multiple ascending doses, or MAD, of XEN1101 in healthy subjects. The XEN1101 Phase 1 clinical trial also included a 
pharmacodynamic, or PD, read-out from transcranial magnetic stimulation, or TMS, studies that were designed to assess XEN1101’s 
ability and potency to modulate cortical excitability, thereby demonstrating activity in the target CNS tissue. The XEN1101 Phase 1 
results include data from six SAD cohorts ranging in dose from 5 to 30 mg (n=34, placebo=8), including a crossover food effect 
cohort (n=10) with a single 20 mg dose. MAD results included three cohorts ranging in once daily doses from 15 to 25 mg (n=18, 
placebo=6) including two cohorts of 15 mg evaluated in a fasted and fed state over 7 and 10 days, respectively, and one cohort of 25 
mg evaluated in a fed state over 10 days. The PK profile of XEN1101 (including an effective half-life greater than 24 hours) supports 
a once-per-day dosing schedule with expected steady state in approximately one week without the need for titration. The majority of 
adverse events, or AEs, were mild or moderate, resolved spontaneously and were consistent with antiepileptic drugs of this class. 
Sedation (including somnolence and drowsiness) and dizziness (including light-headedness and presyncope) were the most common 
AEs, while mild cognitive effects (including memory and speech impairment) and blurred vision were also observed in a dose 
dependent manner. There were no serious adverse events, deaths, or clinically significant delayed ventricular repolarization or 
laboratory findings. Phase 1 results suggest that that XEN1101 is generally safe and well tolerated in the doses examined (single doses 
of up to 30 mg and multiple doses of up to 25 mg once daily). 

We also completed a Phase 1b double-blind, placebo-controlled, randomized cross-over TMS study that included 20 healthy 

male subjects. TMS measurements were taken at 2 and 4 hours for all subjects and, due to a prolonged absorption phase displayed by 
XEN1101, an additional TMS assessment time-point was added at 6 hours for a subset of subjects. Subjects were randomized initially 
to either a 20 mg dose of XEN1101 or placebo and then, after a one-week wash-out period, crossed over to the other treatment arm. 
XEN1101 reduced corticospinal excitability, as demonstrated by a concentration dependent elevation in resting motor threshold, or 
RMT, the key TMS-EMG measure. RMT increased in proportion to XEN1101 plasma concentration showing a mean ± standard error 
of mean increase of 4.9 ± 0.7% (p<0.01) at 6 hours. Active motor threshold, or AMT, also increased in proportion to plasma 
concentration of XEN1101 with an increase of 2.0 ± 0.4% at 6 hours. In addition, XEN1101 statistically significantly modulated 
TMS-evoked electroencephalogram, or EEG, potentials, or TEPs, in a pattern consistent with reductions in cortical excitability. 
Relative to time-matched placebo, at peak plasma levels, XEN1101 decreased the amplitude of TEPs vs placebo at 25, 45 and 180 ms 
after the TMS pulse. Additional measures of cortical excitability including global mean field power were similarly impacted. 
XEN1101 also shifted the power spectra of resting state EEGs toward lower frequencies. This Phase 1b TMS study provided evidence 
of the CNS effects of a 20 mg dose of XEN1101 as indicated by suppression of cortical and corticospinal excitability, which helped 
inform dose selection for our XEN1101 Phase 2b clinical trial.

A Phase 2b clinical trial, called the X-TOLE study, is ongoing and designed as a randomized, double-blind, placebo-controlled, 
multicenter clinical trial to evaluate the clinical efficacy, safety, and tolerability of XEN1101 administered as adjunctive treatment in 
approximately 300 adult patients with focal epilepsy in the United States, Canada, and Europe. The primary endpoint is the median 
percent change in monthly focal seizure frequency from baseline compared to treatment period of active versus placebo. We are in 
close collaboration with each of the XEN1101 clinical sites in North America and Europe, taking specific direction from their 
respective clinical guidelines as they relate to new patient screening and randomization in the context of the COVID-19 pandemic. We 
have expanded the X-TOLE clinical trial to include new sites in both existing and new jurisdictions to support increased patient 
screening. It is anticipated that patient randomization will be completed in the first half of 2021, with topline data anticipated in the 
third quarter of 2021, dependent upon ongoing patient enrollment rates. In addition, based on our diligence and supporting pre-clinical 
data, we expect to support the initiation of a Phase 2 proof-of-concept clinical trial in 2021 with academic collaborators at the Icahn 
School of Medicine at Mount Sinai to study XEN1101 in major depressive disorder and anhedonia. 

4

About Focal Seizures

A focal seizure is localized within the brain and can either stay localized or spread to the entire brain, which is typically 

categorized as a secondary generalized seizure. Focal seizures are the most common type of seizure experienced by people with 
epilepsy. The treatment of an individual patient with focal seizures is currently focused on reduction of seizure frequency, with seizure 
freedom as the ultimate goal. Focal seizures (simple, complex, and secondary generalized tonic-clonic) account for approximately 
60% of seizures (GlobalData Report 2017) of which approximately 33% are considered resistant to current treatments (Epilepsy 
Foundation). It is estimated that the addressable population in the United States could include approximately 460,000 adults and 
70,000 pediatric patients with focal epilepsy.

XEN496, A Kv7 Potassium Channel Modulator for the Treatment of KCNQ2-DEE

XEN496, a Kv7 potassium channel modulator, is a proprietary pediatric formulation of the active ingredient ezogabine being 

developed for the treatment of KCNQ2 developmental and epileptic encephalopathy, or KCNQ2-DEE. Ezogabine was previously 
approved by the FDA as an anti-seizure medication, or ASM, as an adjunctive treatment for adults with focal seizures with or without 
secondary generalization. Published case reports where physicians have used ezogabine in infants and young children with KCNQ2-
DEE suggest that XEN496 may be efficacious in this often hard-to-treat pediatric patient population.

We have received Fast Track designation and orphan drug designation, or ODD, for XEN496 for the treatment of seizures 
associated with KCNQ2-DEE from the FDA, as well as an orphan medicinal product designation from the European Commission. The 
FDA previously indicated that it is acceptable to study XEN496 in infants and children up to four years old, and that a single, small 
pivotal trial may be considered adequate in order to demonstrate XEN496’s efficacy in KCNQ2-DEE, provided the study shows 
evidence of a clinically meaningful benefit in patients with the intended indication. 

Clinical Development

We have developed XEN496 as a pediatric-specific, granule formulation of ezogabine to be presented as sprinkle capsules. 
Standard in vitro testing has shown that XEN496 acts as an “immediate-release” drug product. To support the Phase 3 clinical trial of 
XEN496 in patients with KCNQ2-DEE, we completed a PK study testing our proprietary pediatric formulation in 24 healthy adult 
volunteers. The PK profile observed for XEN496 is comparable to historical PK data for immediate-release ezogabine tablets, with 
XEN496 showing similar absorption and elimination curves, which supports plans for Phase 3 development.

We have now initiated a Phase 3 randomized, double-blind, placebo-controlled, parallel group, multicenter clinical trial, called 
the “EPIK” study, evaluating the efficacy, safety, and tolerability of XEN496 administered as adjunctive treatment in approximately 
40 pediatric patients aged one month to less than 6 years with KCNQ2-DEE. After screening, patients will enter a baseline period to 
assess the frequency of seizures. Eligible subjects will be randomized on a 1:1 basis to receive either XEN496 or placebo for 
approximately 15 weeks (titration and a 12-week maintenance period). At the end of treatment, there will be a period of tapering off of 
study drug, followed by a 28-day safety monitoring period. Patients may be considered for an open-label extension if they meet all 
requirements. The primary endpoint is the percent change from baseline in monthly countable motor seizure frequency during the 
blinded treatment period, as recorded by caregivers in a daily seizure diary. Key secondary endpoints include the proportion of 
patients experiencing greater than or equal to 50 percent reduction in monthly seizure frequency from baseline, caregiver global 
impression of change (CaGI-C) scores, and caregiver global impression of severity (CaGI-S) scores.

About KCNQ2-DEE

KCNQ2 developmental and epileptic encephalopathy, or KCNQ2-DEE, otherwise known as EIEE7, is a rare, severe 
neurodevelopmental disorder with a significant seizure burden and profound developmental impairment. KCNQ2-DEE is uniquely 
characterized by multiple, daily, refractory seizures presenting within the first week of life with a prominent tonic component and 
autonomic signs. Seizures are often accompanied by clonic jerking or complex motor behavior. The electroencephalogram, or EEG, at 
onset of the disease shows a burst suppression pattern later evolving into multifocal epileptiform activity. The infants usually develop 
a severe to profound intellectual disability with axial hypotonia that can be accompanied by limb spasticity. The seizure activity 
typically decreases with age with some patients becoming seizure free or experiencing more minor seizure burden by 3 to 5 years of 
age; however, a survey of patient caregivers conducted by us indicates that a significant proportion of patients have ongoing seizures 
beyond this age range. The intellectual disability and other co-morbidities are not reversed or improved with age and patients 
generally require life-long care. Patients are often non-verbal, and some children may also have autistic features. Seizure-related 
bradycardia and oxygen desaturation with cyanosis have been observed and are thought to contribute to the significant risk of Sudden 
Unexpected Death in Epilepsy, or SUDEP, in these children. A recent epidemiology study from Europe examining the incidence and 
phenotypes of childhood-onset genetic epilepsies reports the incidence of KCNQ2-DEE as approximately 1 per 17,000 live births 
(5.89/100,000) compared to 1 per 12,200 live births estimated for Dravet Syndrome. 

5

XEN007, A CNS-acting Calcium Channel Modulator

XEN007 (active ingredient flunarizine) is a CNS-acting Cav2.1 and T-type calcium channel modulator that is being studied in 

treatment-resistant childhood absence epilepsy, or CAE, and potentially other neurological disorders. We have entered into key 
exclusive licensing agreements in order to access regulatory files and drug product manufacturing, both of which may enable 
advanced clinical development of XEN007. A physician-led, Phase 2 proof-of-concept study is ongoing to examine the potential 
clinical efficacy, safety, and tolerability of XEN007 as an adjunctive treatment in pediatric patients diagnosed with treatment-resistant 
CAE. A presentation of promising interim data collected from a small number of patients was presented at the virtual annual meeting 
of the American Epilepsy Society in December 2020. Given the impact of COVID-19 on recruitment, we continue to work with our 
collaborator to expand the study to include additional sites and expect that topline results from a larger data set will be available in the 
second half of 2021. We expect to make a decision in 2021 regarding the future development of XEN007 in CAE.

About Childhood Absence Epilepsy

Absence seizures are characterized by an abrupt impairment of awareness with arrest in behavior, staring, eye lid fluttering, and 
automatisms associated with generalized 3 Hz spike wave discharges, or SWD, on electroencephalogram, or EEG. A child may have 
one or many (up to 100) absence seizures a day and have problems with attention and learning. Flunarizine has been shown to be well 
tolerated clinically, and in pre-clinical models of absence seizures, flunarizine significantly reduced the number and duration of SWDs 
on EEG as mono-therapy and, when combined with valproic acid or ethosuximide, significantly reduced the SWD EEGs more than 
any drug alone. 

New Pipeline Opportunities

Given our expertise in drug discovery, our efforts are concentrated on the identification of ion channel targets where we believe 

novel modulators might represent significant therapeutic advances, with a particular focus on epilepsy and other CNS-related 
indications. Expansion of our pipeline may come from our internal research efforts and through the acquisition or in-licensing of other 
external product candidates.

Our Partnered Programs

NBI-921352, A Clinical Stage, Selective Nav1.6 Sodium Channel Inhibitor for the Treatment of Epilepsy

In December 2019, we entered into a license and collaboration agreement with Neurocrine Biosciences to develop treatments for 

epilepsy. Neurocrine Biosciences has an exclusive license to XEN901, now known as NBI-921352, a clinical stage selective Nav1.6 
sodium channel inhibitor, and an exclusive license to pre-clinical compounds for development, including selective Nav1.6 inhibitors 
and dual Nav1.2/1.6 inhibitors. The agreement also included a multi-year research collaboration to discover, identify and develop 
additional novel Nav1.6 and Nav1.2/1.6 inhibitors. For a more detailed description of the terms of this agreement with Neurocrine 
Biosciences, see “—Collaborations, Commercial and License Agreements” below.   

NBI-921352 is a potent, highly selective Nav1.6 sodium channel inhibitor being developed to treat pediatric patients with 
SCN8A developmental and epileptic encephalopathy, or SCN8A-DEE, and other potential indications, including adult focal epilepsy. 
Prior to our license and collaboration agreement with Neurocrine Biosciences, we completed a Phase 1 clinical trial in healthy adult 
subjects, and subsequently developed a pediatric-specific, granule formulation. The FDA has provided feedback on an Investigational 
New Drug, or IND, application submitted by Neurocrine Biosciences in support of a Phase 2 clinical trial in SCN8A-DEE patients. 
Based on this feedback, Neurocrine Biosciences anticipates initiating a Phase 2 clinical trial in adolescent patients (aged 12 years and 
older) with SCN8A-DEE in the third quarter of 2021, and the trial protocol will be amended to include younger pediatric patients 
(aged 2-11 years) with SCN8A-DEE as soon as the FDA has reviewed and approved additional non-clinical information. In parallel, 
Neurocrine Biosciences is advancing clinical plans to develop NBI-921352 for the treatment of adult focal epilepsy and expects to 
initiate a Phase 2 clinical trial in 2021. Upon IND or equivalent regulatory acceptance for NBI-921352 in adult focal epilepsy, we are 
eligible to receive a $10.0 million milestone payment; upon FDA acceptance of a protocol amendment for NBI-921352 in pediatric 
patients (aged 2-11 years) with SCN8A-DEE, we are eligible to receive a $25.0 million milestone payment, or a $15.0 million 
milestone payment if the IND acceptance for adult focal epilepsy occurs first. Both milestone payments are in the form of 45% cash 
and a 55% equity investment in our common shares at a 15% premium to our 30-day trailing volume weighted average price at that 
time.

6

FX301, A Nav1.7 Inhibitor for the Treatment of Post-Operative Pain 

In September 2019, we entered into an agreement providing Flexion with the global rights to develop and commercialize 
XEN402, now known as FX301, a Nav1.7 inhibitor. Flexion’s FX301 program consists of XEN402 formulated for extended release 
from a thermosensitive hydrogel. The initial development of FX301 is intended to support administration as a peripheral nerve block 
for control of post-operative pain. In February 2021, the FDA cleared an IND for FX301, resulting in a $1.0 million milestone 
payment due to us, and Flexion anticipates initiating a Phase 1b proof-of-concept clinical trial of popliteal fossa block with FX301 in 
patients undergoing bunionectomy in the first half of 2021. Topline results from that trial could potentially be available in late 2021. 
Pursuant to the terms of the agreement, we are eligible to receive up to an additional $7.0 million in milestone payments through 
initiation of a Phase 2 clinical trial. For a more detailed description of the terms of this agreement with Flexion, see “—Collaborations, 
Commercial and License Agreements” below. 

Selective Inhibitors of Nav1.7 for the Treatment of Pain

In December 2011, we entered into a collaborative research and license agreement with Genentech to discover and develop 

selective oral inhibitors of Nav1.7 for the treatment of pain. For a more detailed description of the terms of our agreements with 
Genentech, see “—Collaborations, Commercial and License Agreements” below. Based on our discovery of Nav1.7 deficiency 
underlying the rare human disease called congenital indifference to pain, or CIP, where individuals with CIP are unable to feel pain, 
we believe that Nav1.7 is a highly validated target for the treatment of pain. Our Genentech collaboration is focused on discovering 
and developing oral drugs that selectively target Nav1.7.

Collaborations, Commercial and License Agreements

License and Collaboration Agreement with Neurocrine Biosciences, Inc.

On December 2, 2019, we entered into a license and collaboration agreement, or the Collaboration Agreement, with Neurocrine 

Biosciences, Inc., or Neurocrine Biosciences, to establish a collaboration under which the parties will identify, research and develop 
sodium channel inhibitors, including our clinical candidate XEN901, now known as NBI-921352, and preclinical candidates XEN393, 
XPC’535 and XPC’391, which compounds Neurocrine Biosciences will have the exclusive right to further develop and commercialize 
under the terms and conditions set forth in the Collaboration Agreement.

Licenses.  Under the terms of the Collaboration Agreement we granted to Neurocrine Biosciences an exclusive, royalty-bearing, 
sublicensable license to certain of our intellectual property rights for the research, development and commercialization of (i) XEN901; 
(ii) XEN393, XPC’535 and XPC’391, collectively referred to as the development track candidates, or the DTCs; and (iii) certain 
research compounds that bind to and inhibit voltage-gated sodium channels Nav1.2 and Nav1.6 as their primary mechanism of action, 
collectively, the Research Compounds and, together with XEN901 and the DTCs, the Compounds, on a worldwide basis for the 
treatment, cure, diagnosis, prediction or prevention of any human disease or disorder, state, condition and/or malady, subject to certain 
exceptions set forth in the Collaboration Agreement.  We also granted to Neurocrine Biosciences a non-exclusive, non-royalty-
bearing, sublicensable license to certain of our intellectual property rights for the screening of compounds for identification as a Select 
Nav Inhibitor (as defined below) and for the research of certain compounds otherwise expressly excluded from the Collaboration 
Agreement, or the Excluded Compounds.  

Exclusivity.  During the Research Term (as defined below) and for one year thereafter, other than in accordance with the terms 

of the Collaboration Agreement, neither Neurocrine Biosciences nor any of its respective affiliates is permitted to directly or indirectly 
research, develop, manufacture or commercialize any small-molecule Select Nav Inhibitor (as defined below).  During the term of the 
Collaboration Agreement, other than the Excluded Compounds and otherwise in accordance with the terms of the Collaboration 
Agreement, neither we nor any of our respective affiliates is permitted to directly or indirectly research, develop, manufacture or 
commercialize a compound that, as its primary mechanism of action, binds to and inhibits voltage-gated sodium channels Nav1.2 and 
Nav1.6, such compound referred to as a Select Nav Inhibitor.

Governance.  The parties have established a joint steering committee, or JSC, composed of an equal number of representatives 
from each entity, which will coordinate and oversee the Collaboration Programs (as defined below).  The JSC will disband upon the 
completion or earlier termination of both of the Collaboration Programs.  Decisions of the JSC will be made by unanimous vote, 
provided that in the event of a disagreement on any matter, following a specified dispute resolution procedure, Neurocrine Biosciences 
will have the right to decide such matter, subject to certain exceptions.

7

Collaboration Programs.  We are collaborating with Neurocrine Biosciences on the conduct of two collaboration programs: (i) a 

joint research collaboration to discover, identify and preclinically develop Research Compounds, or the Research Program, and (ii) a 
collaborative development program for XEN901 and two DTCs selected by the JSC, or the Initial Development Program and, together 
with the Research Program, referred to as the Collaboration Programs.  The Research Program is intended to include the preclinical 
development of our existing non-clinical Research Compounds and the discovery of new back-up and follow-on Research Compounds 
to XEN901 and the two DTCs selected by the JSC as clinical development candidates for subsequent development and 
commercialization by Neurocrine Biosciences.  During the term of the Research Program, the parties will conduct related activities in 
accordance with an agreed research plan and budget.  Each party will be solely responsible for all costs such party incurs to conduct its 
activities under the research plan, provided that Neurocrine Biosciences will reimburse us for certain full-time employees and out-of-
pocket expenses incurred by us in accordance with the research budget.  Unless earlier terminated or extended, the Research Program 
will end on the second anniversary of the Collaboration Agreement, or the Research Term, after which we will have no obligation to 
perform any further activities in furtherance of the Research Program.

The Initial Development Program will include: (i) completion of any preclinical and clinical studies that are ongoing as the date 
of the Collaboration Agreement of any XEN901 product and the two DTC products selected by the JSC; (ii) a pharmacokinetic, drug-
drug interaction and food effect Phase 1 clinical trial of a XEN901 product to examine the adequacy of a new pediatric formulation; 
and (iii) all preclinical studies of two DTC products containing the two DTCs selected by the JSC.  The parties will use their 
commercially reasonable efforts to conduct the development activities under the Initial Development Program pursuant to specific 
development plans.  Each party will be solely responsible for all costs such party incurs to conduct its activities under these 
development plans, provided that, with respect to XEN901 development activities, Neurocrine Biosciences will reimburse us for 
certain full-time employees and out-of-pocket expenses incurred by us, and with respect to certain development activities related to 
the two JSC-selected DTCs, the JSC may determine that Neurocrine Biosciences shall make such reimbursements.  

Development, Regulatory and Manufacturing.  Except for the activities set forth in the plans for the Collaboration Programs, 

Neurocrine Biosciences will be solely responsible, at its sole cost and expense, for all development and manufacturing of the 
Compounds and any pharmaceutical product that contains a Compound, subject to the Co-Funding Option (as defined below).  For the 
first indication that meets or exceeds a specified prevalence threshold, or a Major Indication, for which Neurocrine Biosciences 
intends to conduct a Phase 3 clinical trial of a XEN901 product or the first clinical trial of a DTC product following a successful Phase 
2 clinical trial for such DTC product, Neurocrine Biosciences will prepare a development plan including an estimated budget and 
provide such plan to us.  We will have the right to elect to co-fund the development of one product in a Major Indication under such 
development plan and to receive a mid-single digit percentage increase in royalties owed on the net sales as calculated pursuant to the 
terms of the Collaboration Agreement, or Net Sales, of such products in the United States, or the Co-Funding Option.  If we exercise 
the Co-Funding Option, the parties will share equally all reasonable and documented costs and expenses that Neurocrine Biosciences 
incurs in connection with the development of such product in the applicable indication, except costs and expenses that are solely 
related to the development of such product for regulatory approval outside the United States.

Neurocrine Biosciences will be the regulatory sponsor and will be solely responsible for all regulatory activities (except for 
those delegated to us) under the Collaboration Agreement, including submitting one or more INDs for a XEN901 product.  If the FDA 
grants a Rare Pediatric Disease Priority Review Voucher in connection with the approval of a New Drug Application for a XEN901 
product, Neurocrine Biosciences may, at its option, (i) sell it to a third party and share a specified portion of the proceeds with us; (ii) 
use it for a product Neurocrine Biosciences is developing outside the Collaboration Agreement and pay us a specified portion of the 
voucher’s intrinsic value (as calculated pursuant to the terms of the Collaboration Agreement); or (iii) use the voucher for a 
pharmaceutical product that contains a Compound, in which case no payments would be due to us.  If the FDA grants Neurocrine 
Biosciences a voucher in connection with any other product, Neurocrine Biosciences will retain all rights to such voucher without any 
payment or other obligations to us.

Commercialization.  Neurocrine Biosciences will have the exclusive right to conduct, and will be solely responsible for all 

aspects of, the commercialization of any pharmaceutical product that contains a Compound.

Financial Terms.  Neurocrine Biosciences paid us an upfront payment of $50.0 million, which included a $30.0 million payment 

in cash. For the remainder of the upfront payment, concurrently with the entry into the Collaboration Agreement, the parties entered 
into the Share Purchase Agreement (as defined below) pursuant to which we issued and sold the Shares (as defined below) to 
Neurocrine Biosciences for an aggregate purchase price of $20.0 million.

The Collaboration Agreement also provides for potential aggregate development and regulatory milestone payments from 
Neurocrine Biosciences to us of up to $325.0 million for a XEN901 product and up to $247.5 million for each other Compound up to a 
maximum of three other Compounds.  Sales-based milestones of up to $150.0 million for each Compound, including a XEN901 
product, will be paid from Neurocrine Biosciences to us upon the achievement of certain Net Sales targets, up to a maximum of four 
Compounds.

8

Neurocrine Biosciences has further agreed to pay us royalties based on future Net Sales of any pharmaceutical product that 
contains a Compound.  Such royalty percentages, for Net Sales in and outside the United States, range from (i) for a XEN901 product, 
a low double-digit percentage to a mid-teen percentage and a high-single digit percentage to low double-digit percentage, respectively; 
(ii) for each DTC product, a high-single digit percentage to a low double-digit percentage and a mid-single digit percentage to a high-
single digit percentage, respectively; and (iii) for each Research Compound product, a mid-single digit percentage to a high-single 
digit percentage and a tiered mid-single digit percentage, respectively.

Neurocrine Biosciences’s obligations to pay royalties with respect to a product and country will expire upon the latest of: (i) the 
expiration of the last to expire valid claim in (a) the parties’ joint patent rights filed during the Research Term or a specified period of 
time thereafter or (b) our patent rights as specified in the Collaboration Agreement, in each case that cover such product; (ii) ten years 
from the first commercial sale of the product in such country; and (iii) the expiration of regulatory exclusivity for such product in such 
country, or the Royalty Term.  Royalty payments are subject to reduction in specified circumstances, including expiration of patent 
rights or if average Net Sales decrease by a certain percentage after the introduction of a generic product.

Term and Termination.  Unless earlier terminated, the term of the Collaboration Agreement will continue on a product-by-
product and country-by-country basis until the expiration of the Royalty Term for such product in such country.  Upon the expiration 
of the Royalty Term for a particular product and country, the exclusive license granted by us to Neurocrine Biosciences with respect to 
such product and country will become fully-paid, royalty free, perpetual and irrevocable.

Neurocrine Biosciences may terminate the Collaboration Agreement in its entirety or on a product-by-product or country-by-

country basis, for any or no reason, by providing at least 90 days’ written notice, provided that such unilateral termination will not be 
effective (i) with respect to a XEN901 product until Neurocrine Biosciences has used its commercially reasonable efforts to complete 
one Phase 2 clinical trial for a XEN901 product; (ii) with respect to a DTC product until Neurocrine Biosciences has used its 
commercially reasonable efforts to complete one Phase 1 clinical trial for a DTC product; and (iii) with respect to the Collaboration 
Agreement in its entirety until Neurocrine Biosciences has used its commercially reasonable efforts to complete both of these clinical 
trials.  Either party may terminate the Collaboration Agreement in the event of a material breach in whole or in part, subject to 
specified conditions.  If Neurocrine Biosciences is entitled to terminate the Collaboration Agreement due to our uncured material 
breach, in lieu of termination, Neurocrine Biosciences may elect to reduce all subsequent payments owing from Neurocrine 
Biosciences to us by half.

Upon the termination of the Collaboration Agreement for any reason, all licenses and other rights granted to Neurocrine 
Biosciences by us shall terminate, provided that if termination is solely with respect to one or more products or countries, then such 
termination will apply only to the terminated products or countries.  Upon termination in certain cases, Neurocrine Biosciences has 
agreed to grant us licenses to certain Neurocrine Biosciences intellectual property that is reasonably necessary, and that was actually 
used by Neurocrine Biosciences for the development, manufacturing or commercialization of the terminated products, to research, 
develop and commercialize the terminated products in the terminated countries.  Such license will be royalty-free with respect to any 
terminated product for which a Phase 2 clinical trial was not completed prior to the effective date of termination, and otherwise will be 
royalty-bearing ranging from a low-single digit percentage to a high-single digit percentage depending on the stage of development of 
the applicable product at the effective date of termination.

The Collaboration Agreement includes certain other customary terms and conditions, including mutual representations and 

warranties, indemnification and confidentiality provisions.

9

In January 2021, we entered into an amendment with Neurocrine Biosciences pursuant to which we revised certain IND 
acceptance criteria relating to XEN901 for the potential treatment of SCN8A-DEE. Under the terms of the amendment, a partial IND 
acceptance, or Partial IND Acceptance, for XEN901 in the SCN8A-DEE indication will be deemed to have occurred upon the 
authorization of the FDA to initiate a Phase 2 randomized, double-blind, placebo-controlled study to evaluate the efficacy, safety, 
tolerability, and pharmacokinetics of XEN901 in subjects with SCN8A-DEE aged between 12 and 21 years. A full IND acceptance, or 
Full IND Acceptance, for XEN901 in the SCN8A-DEE indication will be deemed to have occurred upon FDA approval of a protocol 
amendment to the study that expands the subject population to include subjects with SCN8A-DEE aged between 2 and 11 years. If 
XEN901 achieves Full IND Acceptance in SCN8A-DEE or IND or equivalent regulatory authority acceptance in a Major Indication, 
we will be entitled to a milestone cash payment of $11.25 million or $4.5 million, respectively. In addition to such cash payment, we 
will issue and sell either $13.75 million or $5.5 million of our common shares to Neurocrine, depending on whether the IND 
acceptance is for SCN8A-DEE or a Major Indication, respectively.  The common shares sold to Neurocrine will have a price equal to 
115% of our 30-day volume-weighted average price immediately prior to the public announcement of the IND acceptance. If the IND 
acceptance first occurs for a Major Indication and subsequently Full IND Acceptance for XEN901 in SCN8A-DEE occurs, Neurocrine 
will pay us an additional $6.75 million cash payment (for a total of $11.25 million) and an additional $8.25 million (for a total of 
$13.75 million) of common shares will be issued and sold to Neurocrine at a price equal to 115% of our 30-day volume-weighted 
average price immediately prior to the public announcement of the subsequent IND acceptance.  If the aggregate number of common 
shares to be sold to Neurocrine pursuant to the terms of the Collaboration Agreement, as amended, would exceed 19.9% of our 
common shares outstanding on the date of the Collaboration Agreement, then the number of shares to be purchased shall be reduced 
such that the percentage cap is not exceeded.

Share Purchase Agreement

On December 2, 2019, pursuant to the Collaboration Agreement, we entered into a Share Purchase Agreement with Neurocrine 
Biosciences, or the Share Purchase Agreement, pursuant to which we issued and sold 1,408,847 of our common shares, or the Shares, 
to Neurocrine Biosciences in a private placement for an aggregate purchase price of $20.0 million, or $14.196 per share.  The 
purchase price represented a 20% premium to the closing price of our common shares on November 29, 2019.  

The Shares are subject to lock-up restrictions, which, without prior approval of us, prohibit Neurocrine Biosciences from selling 
the Shares for a period of up to two years after the effective date of the Collaboration Agreement.  In addition, Neurocrine Biosciences 
is, subject to certain exceptions, subject to a standstill agreement for a period of two years after the effective date of the Collaboration 
Agreement.  Pursuant to the standstill agreement, Neurocrine Biosciences and its affiliates will not (1) acquire, offer to acquire or 
agree to acquire any of our common shares or securities convertible into common shares, other than common shares issuable to 
Neurocrine Biosciences pursuant to the terms of the Collaboration Agreement; (2)  make, or participate in, any solicitation of proxies 
to vote any of our or our subsidiaries’ voting securities, or propose to change or control our management or board of directors by use 
of any public communication to holders of securities intended for such purpose; (3) make a public proposal for a change of control; or 
(4) knowingly encourage, accept, or support a tender, exchange, or offer proposal by any person, which would result in a change of 
control.  The Share Purchase Agreement contains certain other customary terms and conditions, including mutual representations, 
warranties, and covenants.

Asset Purchase Agreement with Flexion Therapeutics, Inc.

On September 9, 2019, we entered into an asset purchase agreement with Flexion Therapeutics, Inc. pursuant to which Flexion 

acquired all rights with respect to our investigational compound XEN402 and a related compound, including certain regulatory 
documentation, intellectual property rights, reports, data and all quantities of XEN402 owned or controlled by us. XEN402 is a 
sodium channel inhibitor that we had previously developed with our collaborator, Teva Pharmaceuticals International GmbH and its 
affiliated entities.  Pursuant to the terms of the agreement, Flexion also assumed certain liabilities relating to the purchased assets, 
including the obligation to pay a low single-digit percentage royalty to Teva on net sales of any approved products incorporating 
XEN402.

Flexion paid an upfront purchase price of $3.0 million for the purchased assets and a $0.5 million milestone payment for the 
initiation of the first GLP toxicology study. In addition, a $1.0 million milestone for FDA clearance of the first IND has been achieved 
in the first quarter of 2021. Pursuant to the terms of the agreement, we are eligible to receive additional payments for various CMC, 
development and regulatory milestones of up to $7.0 million through initiation of a Phase 2 proof-of-concept clinical trial.  In 
addition, following a successful proof-of-concept clinical trial, we would be eligible to receive additional clinical development and 
global regulatory approval milestone payments of up to $40.75 million, commercialization milestone payments of up to $75.0 million, 
as well as future royalties on sales of any approved products ranging from mid-single to low-double digit percentages, depending on 
the level of worldwide net sales.

10

The agreement contains customary representations, warranties and covenants, including a covenant by us not to develop a 
competing product for the treatment of post-surgical pain and a covenant by Flexion not to develop a product for the treatment of 
epilepsy incorporating XEN402. Each party has agreed, subject to certain conditions and limitations, to indemnify the other party for 
breaches of representations, warranties and covenants and for losses arising from certain assumed/excluded liabilities, as applicable.

Asset Purchase Agreement with 1st Order Pharmaceuticals, Inc.

In April 2017, we entered into an asset purchase agreement with 1st Order Pharmaceuticals, Inc., or 1st Order, pursuant to 
which we acquired all rights with respect to XEN1101 (previously known as 1OP2198). 1st Order previously acquired 1OP2198 from 
Valeant Pharmaceuticals Luxembourg S.a.r.l., an indirect subsidiary of Bausch Health Companies Inc., together with Valeant 
Pharmaceuticals Ireland Limited, Bausch Health, and assumed certain obligations, including potential milestone and royalty payments. 
Under the terms of the asset purchase agreement, we paid 1st Order an upfront fee of approximately $0.4 million and a $0.7 million 
milestone in 2017 upon achieving a clinical development milestone. 

In September 2018, we signed an agreement with Bausch Health to buy out all future milestone payments and royalties owed to 

Bausch Health with respect to XEN1101, including up to $39.6 million in potential clinical development, regulatory and sales-based 
milestones and a mid-to-high single digit percentage royalty on commercial sales in exchange for a one-time payment of $6.0 million. 

In August 2020, we entered into an amendment to the asset purchase agreement to amend certain definitions in the agreement 

and to modify the payment schedule for certain milestones. Upon execution of the amendment, we made a payment of $0.3 million to 
1st Order. We remain responsible for future potential payments to 1st Order of up to $1.2 million in clinical development milestones, 
up to $6 million in regulatory milestones for multiple indications, and $0.5 million in other milestones. There are no royalty 
obligations to 1st Order.

Agreements with Genentech for Selective Inhibitors of Nav1.7 and Pain Genetics

In December 2011, we entered into a collaborative research and license agreement with Genentech, a member of the Roche 

Group, to discover and develop small and large molecules that selectively inhibit the Nav1.7 sodium channel and companion 
diagnostics for the potential treatment of pain. Pursuant to this agreement, we granted Genentech a worldwide exclusive license to 
develop and commercialize compounds directed to Nav1.7 and products incorporating such compounds for all uses. We also granted 
Genentech a worldwide non-exclusive license to diagnostic products for the purpose of developing or commercializing such 
compounds.

Under the terms of the agreement, Genentech paid us an upfront fee of $10.0 million, a $5.0 million milestone payment for the 

selection of a compound for development and an $8.0 million milestone payment upon the approval by Health Canada of a CTA. 
Genentech provided funding to us for certain of our full-time equivalents, or FTEs, performing the research collaboration plan, which 
concluded in December 2016. We are eligible to receive pre-commercial and commercial milestone payments with respect to the 
licensed products totaling up to an additional $613.0 million, comprised of up to $45.5 million in pre-clinical and clinical milestone 
payments, up to $387.5 million in regulatory milestone payments, and up to $180.0 million in sales-based milestone payments for 
multiple products and indications. In addition, we are eligible to receive royalties based on net sales of the licensed products, which 
range from a mid-single-digit percentage to ten percent for small-molecule inhibitors for the timeframe that such products are covered 
by the licensed patents and a low single-digit percentage thereafter until the date that is ten years after first commercial sale on a 
country-by-country basis, plus a low single-digit percentage for large molecule inhibitors of Nav1.7 for a period of ten years from first 
commercial sale on a country-by-country basis. Our pre-commercial and commercial milestone payments and royalties may be subject 
to reductions based on the period in which the compound that is selected for development and commercialization was initially 
conceived. If the compound that is selected for development and commercialization was conceived after December 21, 2019, we will 
not be entitled to any pre-commercial or commercial milestone payments nor to any royalties. 

Our agreement with Genentech expires on the date of the expiration of all payment obligations to us under the agreement. 

Genentech may terminate the agreement with three months advance notice anytime on or after the third anniversary of the effective 
date of the agreement, and each party may terminate the agreement in the event of a material breach by the other party that remains 
uncured after 90 days. In the event that Genentech terminates the agreement due to our breach, Genentech retains its licenses and its 
payment obligations to us are reduced. In the event that we terminate the agreement due to Genentech’s breach, the rights and licenses 
granted to Genentech revert back to us, subject to certain rights to make and use certain large-molecule product candidates that are 
retained by Genentech, and Genentech is obligated to assign certain regulatory approvals and grant certain licenses to us to enable us 
to develop and commercialize certain terminated products outside of the collaboration.

11

Our collaborative research and license agreement with Genentech has been amended multiple times, in May 2015, November 

2015, March 2016, May 2017, July 2018 and September 2018, to either extend the term of the research program or to provide us with 
greater flexibility in developing compounds that target Nav1.6. Pursuant to the current amendment, we have obtained a non-exclusive, 
irrevocable, perpetual, world-wide, sublicensable license under the know-how forming part of the Genentech intellectual property 
developed under the Nav1.7 collaboration that is necessary or useful to make, use, sell, offer for sale, and import compounds from our 
Nav1.6 program that are above a certain potency on Nav1.7 and were conceived prior to a certain date and products containing those 
compounds. Our license from Genentech includes commercialization rights but we are restricted from developing or commercializing 
our Nav1.6 compounds below a certain potency on Nav1.7 and conceived prior to a certain date in the field of epilepsy and any of our 
Nav1.6 compounds conceived prior to a certain date, regardless of their potency on Nav1.7, in the field of pain. In exchange for the 
rights granted to us under this amendment, Genentech is eligible to receive a low single-digit percentage, tiered royalty on net sales of 
our Nav1.6 compounds conceived prior to a certain date, including XEN901 (now known as NBI-921352), for a period of ten years 
from first commercial sale on a country-by-country basis. In accordance with our license and collaboration agreement with Neurocrine 
Biosciences, we remain solely responsible for all payments to Genentech with respect to certain Nav1.6 compounds, including NBI-
921352, licensed to Neurocrine Biosciences.  Pursuant to the amendment, we granted Genentech a royalty-free, non-exclusive, world-
wide license under our Nav1.6 intellectual property to make, use, sell, offer for sale and import compounds below a certain potency on 
Nav1.7 and products containing those compounds for all uses and indications except epilepsy. 

In March 2014, we entered into an additional agreement with Genentech for pain genetics, which focused on identifying genetic 

targets associated with rare phenotypes where individuals have an inability to perceive pain or where individuals have non-
precipitated spontaneous severe pain. Pursuant to the terms of this agreement, any intellectual property arising out of the collaboration 
will be jointly owned by us and Genentech. We also granted Genentech a time-limited, exclusive right of first negotiation on a target-
by-target basis to form joint drug discovery collaborations. Under the terms of this agreement, Genentech paid us an upfront payment 
of $1.5 million and two $0.25 million milestone payments related to the identification of novel pain targets in September 2015 and 
July 2017. Genentech’s time-limited, exclusive right of first negotiation, which was exercisable throughout the research term, expired 
at the same time as the agreement in March 2018. Despite such termination, we remain eligible for up to an additional $1.5 million in 
milestone payments. 

Intellectual Property 

As part of our business strategy, we generally file patent applications disclosing and claiming drug targets and their novel uses, 
novel compositions that modulate such targets, methods of making and using such compositions and various therapeutic formulations 
of such compositions that cover our product candidates. In some cases, we also file claims on screening assays as well as compositions 
and methods for use in diagnosing certain diseases. We generally file applications in the U.S., Canada, the European Union, or EU, 
and other commercially significant foreign jurisdictions. We also rely on trade secrets, internal know-how, technological innovations 
and agreements with third parties to develop, maintain and protect our competitive position. Our ability to be competitive will depend 
on the success of this strategy.

As of December 31, 2020, we owned, co-owned or licensed 32 issued U.S. patents and approximately 21 pending U.S. patent 
applications, including provisional and non-provisional filings. We also owned, co-owned or licensed an additional 227 pending and 
granted counterpart applications worldwide, including 20 country-specific validations of three European patents.

As of December 31, 2020, we owned two issued U.S. patents and four pending U.S. non-provisional patent applications related 

to XEN1101, and methods of making and using XEN1101 and certain related compounds. The issued patents are expected to expire 
between 2028 and 2029 (absent any extensions of term). In addition, we have 15 foreign issued patents (exclusive of European patent 
national validations), three pending PCT international applications, and 30 pending corresponding applications in various foreign 
jurisdictions relating to XEN1101 and certain related compounds.

As of December 31, 2020, we have filed one U.S. non-provisional patent application directed to XEN496 (i.e., our pediatric 
formulation of ezogabine), a genus of related formulations, and methods of making and using the same.  In addition, we have one 
pending PCT international application relating to XEN496 and related intellectual property. Any patents issuing from this application 
are expected to expire in 2040 (absent any extensions of term).

As of December 31, 2020, we co-owned one U.S. provisional patent application directed to methods of using XEN007 for the 

treatment of certain pediatric epilepsy disorders.  Any patents issuing from this application are expected to expire in 2041 (absent any 
extensions of term).

12

As of December 31, 2020, we owned three U.S. patents, one pending U.S. non-provisional patent application, and four U.S. 
provisional patent applications directed to XEN901 (now known as NBI-921352) and methods of making and using XEN901 and 
certain related compounds. The issued patents, along with any patents issuing from these applications, are expected to expire between 
2037 and 2041 (absent any extensions of term).  In addition, we have 21 pending corresponding applications in various foreign 
jurisdictions relating to XEN901 and certain related compounds. Pursuant to our collaboration with Neurocrine Biosciences, 
Neurocrine Biosciences will oversee the prosecution, maintenance and other matters relating to the patent portfolio for XEN901 (now 
known as NBI-921352) and the other selective Nav1.6 inhibitors and dual Nav1.2/1.6 inhibitors.

As of December 31, 2020, we owned two U.S. patents, filed three U.S. non-provisional patent applications, two PCT 

international applications, and 58 pending corresponding applications in various foreign jurisdictions directed to certain of our 
selective inhibitors of Nav1.6 and/or Nav1.2 (exclusive of XEN901), as well as methods of making and using the same. The issued 
patents, along with any patents issuing from these applications are expected to expire between 2037 and 2039 (absent any extensions 
of term).

As of December 31, 2020, we, together with Genentech, co-owned nine issued U.S. patents, six pending U.S. patent 
applications, six foreign issued patents (exclusive of European patent national validations), and have filed 69 pending counterpart 
patent applications in various jurisdictions directed to Nav1.7 inhibitors, as well as methods of making and using the same. The issued 
patents, as well as any patents issuing from these applications are expected to expire between 2034 and 2037 (absent any extensions of 
term).

Competition

The biotechnology and pharmaceutical industries are highly competitive and are characterized by rapidly advancing 

technologies and a strong emphasis on proprietary products. While we believe that our technology, development experience, scientific 
knowledge and drug discovery approach provide us with certain advantages, we face potential competition in our discovery and 
product development efforts from many different approaches and sources, including pharmaceutical and biotechnology companies, 
academic institutions and governmental agencies and public and private research institutions. Any product candidates or products that 
we or our collaborators successfully develop and commercialize will compete with existing products and new products that may 
become available in the future.

Many of the companies against which we are competing or against which we may compete in the future have significantly 

greater financial resources and expertise in research and development, manufacturing, pre-clinical testing, conducting clinical trials, 
obtaining regulatory approvals and marketing approved products than we, or our collaborators, do. Mergers and acquisitions in the 
pharmaceutical and biotechnology industries may result in even more resources being concentrated among a smaller number of our 
competitors. Smaller or early stage companies may also prove to be significant competitors, particularly through collaboration 
arrangements with large and established companies.

Our commercial opportunities could be reduced or eliminated if our competitors develop and commercialize products or 

therapies that are safer, more effective, have fewer or less severe side effects, are more convenient or are less expensive than any 
products that we may develop. Our competitors also may obtain FDA, European Medicines Agency, or EMA, Health Canada or other 
regulatory approval for their products more rapidly than we may obtain approval for ours, which could result in our competitors 
establishing a strong market position before we are able to enter the market. In addition, our ability to compete may be affected in 
many cases by insurers or other third party payers.

Aside from the product marketplace, our competitors also compete with us in recruiting and retaining qualified scientific and 

management personnel, establishing clinical trial sites, recruiting patients for clinical trials, and by acquiring technologies 
complementary to, or necessary for, our programs.

The key competitive factors affecting the success of all of our product candidates, if approved, are likely to be their efficacy, 

safety, convenience, price, the effectiveness of alternative products, the level of competition and the availability of coverage, and 
adequate reimbursement from government and other third party payers. Our product candidates that are in clinical development may 
compete with various therapies and drugs, both in the marketplace and currently under development.

13

Anti-Seizure Medications, or ASMs, for the Treatment of Epilepsy 

If more than one of our proprietary or partnered products were approved for the treatment of epilepsy, we anticipate that they 

could potentially compete with one another and other ASMs. Currently prescribed ASMs, among others, include phenytoin, 
levetiracetam, brivaracetam, carbamazepine, cenobamate, clobazam, lamotrigine, valproate, oxcarbazepine, topiramate, lacosamide, 
ethosuximide, perampanel, cannabidiol, eslicarbazepine acetate and fenfluramine. There are currently no FDA-approved treatments 
specifically indicated for the early infantile epileptic encephalopathies KCNQ2-DEE or SCN8A-DEE; however, a number of different 
ASMs are currently used in these patient populations. We are not aware of other companies that are developing selective Nav1.6 
inhibitors for the treatment of epilepsy. There are other ASMs in clinical development that could potentially compete with our 
products, including products in development from Eisai Co., Ltd., GW Pharmaceuticals plc, Knopp Biosciences LLC, Marinus 
Pharmaceuticals, Inc., Neurocrine Biosciences, Inc., Ovid Therapeutics Inc., Praxis Precision Medicines, Inc., Sage Therapeutics, SK 
Life Science, Inc., Supernus Pharmaceuticals Inc., Takeda Pharmaceutical Company Ltd., UCB, Inc., and Upsher-Smith Laboratories, 
Inc., Zogenix, Inc., and Zynerba Pharmaceuticals, Inc.   

Government Regulation 

We are developing small-molecule product candidates, which are regulated as drugs by the FDA and equivalent regulatory 
authorities outside the U.S. Within the FDA, the Center for Drug Evaluation and Research, or CDER, regulates drugs. Drugs are 
subject to regulation under the Federal Food, Drug, and Cosmetic Act, or FD&C Act, and other federal, provincial, state, local and 
foreign statutes and regulations. The FD&C Act and corresponding regulations govern, among other things, the testing, 
manufacturing, safety, efficacy, labeling, packaging, storage, record keeping, distribution, import, export, reporting, advertising and 
other promotional practices involving drugs. FDA approval of an IND application must be obtained before clinical testing of drugs is 
initiated, and each clinical study protocol for such product candidates is reviewed by the FDA and IRB prior to initiation in the U.S. 
FDA approval also must be obtained before marketing of drugs in the U.S. The process of obtaining regulatory approvals and the 
subsequent compliance with appropriate federal, provincial, state, local and foreign statutes and regulations require the expenditure of 
substantial time and financial resources and we may not be able to obtain the required regulatory approvals.

U.S. Drug Development Process

The process required by the FDA before a drug product may be marketed in the U.S. generally involves the following:

•

•

•

•

•

•

•

completion of nonclinical laboratory tests and animal studies according to good laboratory practices, or GLPs, and 
applicable requirements for the humane use of laboratory animals or other applicable regulations;

submission to the FDA of an application for an IND, which must become effective before human clinical studies may begin;

performance of adequate and well-controlled human clinical studies according to the FDA’s regulations commonly referred 
to as good clinical practices, or GCPs, and any additional requirements for the protection of human research subjects and 
their health information, to establish the safety and efficacy of the proposed product for its intended use;

submission to the FDA of an NDA for drug products for marketing approval that includes substantial evidence of safety and 
efficacy based on large scale phase 3 clinical studies;

satisfactory completion of an FDA inspection of the manufacturing facility or facilities where the product is produced to 
assess compliance with good manufacturing practices, or GMP, to assure that the facilities, methods and controls are 
adequate to consistently manufacture the product pursuant to regulatory requirements;

potential FDA audit of the nonclinical and clinical study sites that generated the data in support of the NDA; and

FDA review and approval of the NDA.

Human clinical studies are typically conducted in three sequential phases that may overlap or be combined:

•

•

•

Phase 1. The drug is initially introduced into healthy human subjects and tested for safety. In the case of some products for 
severe or life-threatening diseases, especially when the product may be too inherently toxic to ethically administer to 
healthy volunteers, the initial human testing is often conducted in patients that have the condition or disease being studied.

Phase 2. The drug is evaluated in a limited patient population to identify possible adverse effects and safety risks, to 
preliminarily evaluate the efficacy of the product for specific targeted diseases and to determine a dose range and dosing 
schedule.

Phase 3. Clinical studies are undertaken to further evaluate dosing and dosing schedule, clinical efficacy, and safety in an 
expanded patient population at geographically dispersed clinical study sites. These clinical studies are intended to establish 
the overall risk/benefit ratio of the product and provide an adequate basis for product labeling.

14

Post-approval clinical studies, sometimes referred to as Phase 4 clinical studies, may be conducted after initial marketing 
approval. These clinical studies are used to gain additional experience from the treatment of patients in the intended therapeutic 
indication, particularly for long-term safety follow-up. During all phases of clinical development, regulatory agencies require 
extensive monitoring and auditing of all clinical activities, clinical data, and clinical study investigators.

Concurrent with clinical studies, companies usually complete additional animal studies and must also develop additional 
information about the physical characteristics of the drug as well as finalize a process for manufacturing the product in commercial 
quantities in accordance with GMP requirements. The manufacturing process must be capable of consistently producing quality 
batches of the product candidate and, among other requirements, the sponsor must develop methods for ensuring the quality, identity, 
strength, and purity of the final drug. Additionally, appropriate packaging must be selected and tested and stability studies must be 
conducted to demonstrate that the drug candidate does not undergo unacceptable deterioration over its labeled shelf life.

Further, as a result of the COVID-19 pandemic, we may be required to develop and implement additional clinical trial policies 

and procedures designed to help protect subjects from the COVID-19 virus. For example, the FDA has issued guidance on conducting 
clinical trials during the pandemic, which describes a number of considerations for sponsors of clinical trials impacted by the 
pandemic, including certain reporting requirements, and additional guidance on the good manufacturing practice considerations for 
responding to COVID-19 infection and other topics. We may be required to make further adjustments to our clinical trials or business 
operations based on current or future guidance and regulatory requirements as a result of the COVID-19 pandemic.

U.S. Review and Approval Processes

After the completion of clinical studies of a drug, FDA approval of an NDA must be obtained before commercial marketing of 

the drug. The NDA must include results of product development, laboratory and animal studies, human studies, information on the 
manufacture and composition of the product, proposed labeling and other relevant information. In addition, under the Pediatric 
Research Equity Act, or PREA, an NDA or supplement to an NDA must contain data to assess the safety and effectiveness of the 
product for the claimed indications in all relevant pediatric subpopulations and to support dosing and administration for each pediatric 
subpopulation for which the product is safe and effective. The FDA may grant deferrals for submission of data or full or partial 
waivers. Unless otherwise required by regulation, PREA does not apply to any drug for an indication for which orphan designation has 
been granted. The testing and approval processes require substantial time and effort and there can be no assurance that the FDA will 
accept the NDA for filing and, even if filed, that any approval will be granted on a timely basis, if at all.

Under the Prescription Drug User Fee Act, or PDUFA, as amended, each NDA must be accompanied by a substantial user fee. 
PDUFA also imposes an annual product fee for drugs and an annual establishment fee on facilities used to manufacture prescription 
drugs. Fee waivers or reductions are available in certain circumstances, including a waiver of the application fee for the first 
application filed by a small business. Additionally, no user fees are assessed on NDAs for products designated as orphan drugs, unless 
the product also includes a non-orphan indication.

Within 60 days following submission of the application, the FDA reviews the NDA to determine if it is substantially complete 

before the agency accepts it for filing. The FDA may refuse to file any marketing application that it deems incomplete or not properly 
reviewable at the time of submission and may request additional information, including additional clinical data. In this event, the NDA 
must be resubmitted with the additional information. The resubmitted application also is subject to review before the FDA accepts it 
for filing. Once the submission is accepted for filing, the FDA begins an in-depth substantive review of the NDA. The FDA reviews 
the application to determine, among other things, whether the proposed product is safe and effective for its intended use, and whether 
the product is being manufactured in accordance with GMPs. The FDA may refer applications for novel products or products that 
present difficult questions of safety or efficacy to an advisory committee, typically a panel that includes clinicians and other experts, 
for review, evaluation and a recommendation as to whether the application should be approved and under what conditions. The FDA 
is not bound by the recommendations of an advisory committee, but it considers such recommendations carefully when making 
decisions. During the product approval process, the FDA also will determine whether a Risk Evaluation and Mitigation Strategy, or 
REMS, is necessary to assure the safe use of the product. If the FDA concludes a REMS is needed, the sponsor of the NDA must 
submit a proposed REMS; the FDA will not approve the application without a REMS, if required.

Notwithstanding the submission of relevant data and information, the FDA may ultimately decide that the NDA does not satisfy 
its regulatory criteria for approval and deny approval. Data obtained from clinical studies are not always conclusive and the FDA may 
interpret data differently than we interpret the same data. If the agency decides not to approve the marketing application, the FDA will 
issue a Complete Response letter that usually describes all of the specific deficiencies in the application identified by the FDA. The 
deficiencies identified may be minor, for example, requiring labeling changes, or major, for example, requiring additional clinical 
studies. Additionally, the Complete Response letter may include recommended actions that the applicant might take to place the 
application in a condition for approval. If a Complete Response letter is issued, the applicant may either resubmit the NDA, addressing 
all of the deficiencies identified in the letter, or withdraw the application.

15

If a product receives regulatory approval, the approval will be limited to the specific diseases and dosages studied in clinical 

trials or the indications for use may otherwise be limited, which could restrict the commercial value of the product. Further, the FDA 
may require that certain contraindications, warnings or precautions be included in the product labeling. The FDA may impose 
restrictions and conditions on product distribution, prescribing, or dispensing pursuant to a REMS request, or otherwise limit the scope 
of any approval.

One of the performance goals agreed to by the FDA under the PDUFA is to complete its review of 90% of standard new 
molecular entity, or NME, NDAs within ten months from the filing date and 90% of priority NME NDAs within six months from the 
filing date, whereupon a review decision is to be made. The FDA does not always meet its PDUFA goal dates and its review goals are 
subject to change from time to time. The review process and the PDUFA goal date may be extended by three months if the FDA 
requests or the application sponsor otherwise provides additional information or clarification regarding information already provided 
in the submission within the last three months before the PDUFA goal date.

Fast Track Designation

The FDA has various programs, including Fast Track, which are intended to expedite the process for the development and 
review of drugs. Even if a drug qualifies for one or more of these programs, the FDA may later decide that the drug no longer meets 
the conditions for qualification. Generally, drugs that are eligible for these programs are those for serious or life-threatening 
conditions, those with the potential to address unmet medical needs, and those that offer meaningful benefits over existing treatments. 
For example, Fast Track is a process designed to expedite the FDA’s review of drugs that treat serious or life-threatening diseases or 
conditions and fill unmet medical needs. Under the Fast Track process, drugs that offer major advances in treatment or provide a 
treatment where no adequate therapy exists, may also receive priority review by the FDA, or review within six months of the filing of 
an NDA compared to a traditional review time of ten months. Although Fast Track and priority review do not affect the standards for 
approval of a drug, and may not result in a faster approval, if approval is granted, for Fast Track designated drugs, the FDA will also 
attempt to facilitate early and frequent meetings with a sponsor of a Fast Track designated drug, to expedite such drug’s review and 
development.

 Orphan Drug Designation

Under the Orphan Drug Act, the FDA may grant orphan designation to a drug intended to treat a rare disease or condition, 
which is generally a disease or condition that affects fewer than 200,000 individuals in the U.S., or more than 200,000 individuals in 
the U.S. and for which there is no reasonable expectation that the cost of developing and making a drug available in the U.S. for this 
type of disease or condition will be recovered from sales of the product. We have received orphan drug designation from the FDA for 
XEN496 (active ingredient ezogabine), a drug we are evaluating in a Phase 3 clinical trial for the treatment of KCNQ2-DEE. Orphan 
product designation must be requested before submitting an NDA. After the FDA grants orphan product designation, the identity of 
the therapeutic agent and its potential orphan use are disclosed publicly by the FDA. Orphan product designation does not convey any 
advantage in or shorten the duration of the regulatory review and approval process. 

Orphan drug products may also be eligible for RPD designation if greater than 50% of patients living with the disease are under 
age 19 and the condition affects fewer than 200,000 individuals in the U.S. A priority review voucher will be given to the sponsor of a 
product with an RPD designation at the time of product approval that is transferable to another company. 

If a product that has orphan designation subsequently receives the first FDA approval for such drug for the disease or condition 

for which it has such designation, the product is entitled to orphan product exclusivity, which means that the FDA may not approve 
any other applications to market the same drug for the same indication for seven years, except in limited circumstances, such as a 
showing of clinical superiority to the product with orphan exclusivity. Competitors, however, may receive approval of different 
products for the same indication for which the orphan product has exclusivity or obtain approval for the same product but for a 
different indication for which the orphan product has exclusivity. Orphan product exclusivity also could block the approval of one of 
our products for seven years if a competitor obtains approval of the same product for the same orphan indication as defined by the 
FDA, or if our product candidate is determined to be contained within the competitor’s product for the same orphan indication or 
disease. If a drug designated as an orphan product receives marketing approval for an indication broader than what is designated, it 
may not be entitled to orphan product exclusivity. Orphan drug status in the EU has similar, but not identical, benefits, including up to 
ten years of exclusivity.

16

Post-Approval Requirements

Rigorous and extensive FDA regulation of drug continues after approval, particularly with respect to GMP. We will rely, and 

expect to continue to rely, on third parties for the production of clinical and commercial quantities of any products that we may 
commercialize. Manufacturers of our products are required to comply with applicable requirements in the GMP regulations, including 
quality control and quality assurance and maintenance of records and documentation. Other post-approval requirements applicable to 
drug manufacturers, include reporting of GMP deviations that may affect the safety, efficacy or quality of a distributed product, 
record-keeping requirements, reporting of adverse effects, reporting updated safety and efficacy information, and complying with 
electronic record and signature requirements. 

We also must comply with the FDA’s advertising and promotion requirements, such as those related to direct-to-consumer 

advertising, the prohibition on promoting products for uses or in patient populations that are not described in or are otherwise 
inconsistent with the product’s approved labeling (known as “off-label use”), and industry-sponsored scientific and educational 
activities. Discovery of previously unknown problems or the failure to comply with the applicable regulatory requirements may result 
in restrictions on the marketing of a product or withdrawal of the product from the market as well as possible civil or criminal 
sanctions. Failure to comply with the applicable U.S. requirements at any time during the product development process, approval 
process or after approval, may subject an applicant or manufacturer to administrative or judicial civil or criminal sanctions and adverse 
publicity. FDA sanctions could include refusal to approve pending applications, withdrawal of an approval, clinical hold, warning or 
untitled letters, product recalls, product seizures, total or partial suspension of production or distribution, injunctions, fines, refusals of 
government contracts, mandated corrective advertising or communications with doctors, debarment, restitution, disgorgement of 
profits, or civil or criminal penalties. Any agency or judicial enforcement action could have a material adverse effect on us.

Drug manufacturers and other entities involved in the manufacture and distribution of approved drugs are required to register 
their establishments with the FDA and certain state agencies, and are subject to periodic unannounced inspections by the FDA and 
certain state agencies for compliance with GMPs and other laws. Accordingly, manufacturers must continue to expend time, money, 
and effort in the area of production and quality control to maintain GMP compliance. Discovery of problems with a product after 
approval may result in restrictions on a product, manufacturer, or holder of an approved NDA, including withdrawal of the product 
from the market. In addition, changes to the manufacturing process or facility generally require prior FDA approval before being 
implemented and other types of changes to the approved product, such as adding new indications and additional labeling claims, are 
also subject to further FDA review and approval.

U.S. Patent Term Restoration and Marketing Exclusivity

Depending upon the timing, duration and specifics of the FDA approval of the use of our product candidates, some of our U.S. 
patents may be eligible for limited patent term extension under the Drug Price Competition and Patent Term Restoration Act of 1984, 
commonly referred to as the Hatch-Waxman Amendments. The Hatch-Waxman Amendments permit a patent restoration term of up to 
five years as compensation for patent term lost during product development and the FDA regulatory review process. However, patent 
term restoration cannot extend the remaining term of a patent beyond a total of 14 years from the product’s approval date. Only one 
patent applicable to an approved product is eligible for the extension and the application for the extension must be submitted prior to 
the expiration of the patent. The U.S. Patent and Trademark Office, in consultation with the FDA, reviews and approves the 
application for any patent term extension or restoration.

Under the Hatch-Waxman Amendments, a drug product containing a new chemical entity as its active ingredient is entitled to 
five years of market exclusivity, and a product whose active ingredient was previously FDA approved, and for which the sponsor is 
required to generate new clinical data is entitled to three years of market exclusivity. A drug can also obtain pediatric market 
exclusivity in the U.S. and, if granted, adds six months to existing exclusivity periods and patent terms. This six-month exclusivity, 
which runs from the end of other exclusivity protection or patent term, may be granted based on the timely, voluntary, and as-agreed 
upon completion of a pediatric study in accordance with an FDA-issued “Written Request” for such a study.

Additional Regulation

In addition to the foregoing, provincial, state and federal U.S. and Canadian laws regarding environmental protection and 
hazardous substances affect our business. These and other laws govern our use, handling and disposal of various biological, chemical 
and radioactive substances used in, and wastes generated by, our operations. If our operations result in contamination of the 
environment or expose individuals to hazardous substances, we could be liable for damages and governmental fines. We believe that 
we are in material compliance with applicable environmental laws and that continued compliance therewith will not have a material 
adverse effect on our business. We cannot predict, however, how changes in these laws may affect our future operations.

17

Global Anti-Corruption Laws

The U.S. Foreign Corrupt Practices Act and the Canadian Corruption of Foreign Public Officials Act, the U.S. Travel Act, the 

OECD Anti-Bribery Convention, Title 18 United States Code section 201, and any other applicable domestic or foreign anti-
corruption or anti-bribery laws to which we are subject prohibit corporations and individuals from engaging in certain activities to 
obtain or retain business or to influence a person working in an official capacity. It is illegal to pay, offer to pay or authorize the 
payment of anything of value to any foreign government official, government staff member, political party or political candidate in an 
attempt to obtain or retain business or to otherwise influence a person working in an official capacity. We may also be held liable for 
the acts of our third party agents under the U.S. Foreign Corrupt Practices Act, Canadian Corruption of Foreign Public Officials Act, 
and other applicable anti-corruption and anti-bribery laws. Noncompliance with these laws could subject us to investigations, 
sanctions, settlements, prosecution, other enforcement actions, disgorgement of profits, significant fines, damages, other civil and 
criminal penalties or injunctions, suspension or debarment from contracting with certain persons, the loss of export privileges, 
whistleblower complaints, reputational harm, adverse media coverage, and other collateral consequences. Any investigations, actions 
or sanctions or other previously mentioned harm could have a material negative effect on our business, operating results and financial 
condition.

Government Regulation Outside of the U.S.

In addition to regulations in the U.S., we will be subject to a variety of regulations in other jurisdictions governing, among other 

things, research, development, testing, manufacture, quality control, approval, labeling, packaging, storage, record-keeping, 
promotion, advertising, distribution, post-approval monitoring and reporting, marketing and export and import of drugs, and 
reimbursement requirements. Generally, before a new drug can be marketed, considerable data demonstrating its quality, safety and 
efficacy must be obtained, organized into a format specific for each regulatory authority, submitted for review and approved by the 
regulatory authority. Whether or not we obtain FDA approval for a product, we must obtain the requisite approvals from regulatory 
authorities in foreign countries prior to the commencement of clinical studies or marketing of the product in those countries. Certain 
countries outside of the U.S. have a similar process that requires the submission of a clinical study application much like the IND prior 
to the commencement of human clinical studies. In the EU, for example, a CTA must be submitted to each country’s national health 
authority and an independent ethics committee, much like the FDA and the IRB, respectively. Once the CTA is approved in 
accordance with a country’s requirements, clinical study development may proceed. Similar requirements regarding a CTA and ethics 
approval exist in Canada.

The requirements and process governing the conduct of clinical studies, product licensing, coverage, pricing and reimbursement 

vary from country to country. In all cases, the clinical studies are conducted in accordance with GCP and the applicable regulatory 
requirements and the ethical principles that have their origin in the Declaration of Helsinki. The EU clinical trials legislation currently 
is undergoing a transition process mainly aimed at harmonizing and streamlining clinical-trial authorization, simplifying adverse-event 
reporting procedures, improving the supervision of clinical trials and increasing their transparency. Recently enacted Clinical Trials 
Regulation EU No 536/2014 is intended to ensure that the rules for conducting clinical trials in the EU are identical; however, it has 
not yet been fully implemented.

To obtain regulatory approval of an investigational drug under EU regulatory systems, we must submit a marketing 
authorization application, or MAA. The application used to file the NDA in the U.S. is similar to that required in the EU, with the 
exception of, among other things, country-specific document requirements. Reimbursement approval for the drug by regulatory 
authorities is also required before a drug may be commercialized. The EU also provides opportunities for market exclusivity. For 
example, in the EU, upon receiving marketing authorization, new chemical entities generally receive eight years of data exclusivity 
and an additional two years of market exclusivity. If granted, data exclusivity prevents regulatory authorities in the EU from 
referencing the innovator’s data to assess a generic application. During the additional two-year period of market exclusivity, a generic 
marketing authorization can be submitted, and the innovator’s data may be referenced, but no generic product can be marketed until 
the expiration of the market exclusivity. However, there is no guarantee that a product will be considered by the EU’s regulatory 
authorities to be a new chemical entity, and products may not qualify for data exclusivity. Products receiving orphan designation in the 
EU can receive ten years of market exclusivity, during which time no similar medicinal product for the same indication may be placed 
on the market. An orphan product can also obtain an additional two years of market exclusivity in the EU for pediatric studies. No 
extension to any supplementary protection certificate can be granted on the basis of pediatric studies for orphan indications.

18

The criteria for designating an “orphan medicinal product” in the EU are similar in principle to those in the U.S. Under Article 3 

of Regulation (EC) 141/2000, a medicinal product may be designated as orphan if (1) it is intended for the diagnosis, prevention or 
treatment of a life-threatening or chronically debilitating condition; (2) either (a) such condition affects no more than five in 10,000 
persons in the EU when the application is made, or (b) the product, without the benefits derived from orphan status, would not 
generate sufficient return in the EU to justify investment; and (3) there exists no satisfactory method of diagnosis, prevention or 
treatment of such condition authorized for marketing in the EU, or if such a method exists, the product will be of significant benefit to 
those affected by the condition, as defined in Regulation (EC) 847/2000. Orphan medicinal products are eligible for financial 
incentives such as reduction of fees or fee waivers and are, upon grant of a marketing authorization, entitled to ten years of market 
exclusivity for the approved therapeutic indication. The application for orphan drug designation must be submitted before the 
application for marketing authorization. The applicant will receive a fee reduction for the marketing authorization application if the 
orphan drug designation has been granted, but not if the designation is still pending at the time the marketing authorization is 
submitted. Orphan drug designation does not convey any advantage in, or shorten the duration of, the regulatory review and approval 
process. 

The 10-year market exclusivity may be reduced to six years if, at the end of the fifth year, it is established that the product no 

longer meets the criteria for orphan designation, for example, if the product is sufficiently profitable not to justify maintenance of 
market exclusivity. Additionally, marketing authorization may be granted to a similar product for the same indication at any time if:

•

•

•

the second applicant can establish that its product, although similar, is safer, more effective or otherwise clinically superior;

the applicant consents to a second orphan medicinal product application; or

the applicant cannot supply enough orphan medicinal product.

For other countries outside of the EU, such as Canada and countries in Eastern Europe, Latin America or Asia, the requirements 

governing the conduct of clinical studies, product and establishment licensing, coverage, data protection, pricing and reimbursement 
vary from country to country. In all cases, again, the clinical studies are conducted in accordance with GCP and the applicable 
regulatory requirements and the ethical principles that have their origin in the Declaration of Helsinki.

If we fail to comply with applicable foreign regulatory requirements, we may be subject to, among other things, fines, 

suspension or withdrawal of regulatory approvals, product recalls, inability to import or export, seizure of products, operating 
restrictions and criminal prosecution.

Pharmaceutical Coverage, Pricing and Reimbursement 

Significant uncertainty exists as to the coverage and reimbursement status of any product candidates for which we obtain 

regulatory approval. In the U.S. and markets in other countries, sales of any products for which we receive regulatory approval for 
commercial sale will depend, in part, on the availability of coverage and adequate reimbursement from third-party payers. Third-party 
payers include government programs such as Medicare or Medicaid, managed care plans, private health insurers, and other 
organizations. These third-party payers may deny coverage or reimbursement for a product or therapy in whole or in part if they 
determine that the product or therapy was not medically appropriate or necessary. Third-party payers may attempt to control costs by 
limiting coverage to specific drug products on an approved list, or formulary, which might not include all of the FDA-approved drug 
products for a particular indication, and by limiting the amount of reimbursement for particular procedures or drug treatments.

The cost of pharmaceuticals continues to generate substantial governmental and third party payer interest. We expect that the 

pharmaceutical industry will experience pricing pressures due to the trend toward managed healthcare, the increasing influence of 
managed care organizations and additional legislative proposals. Third-party payers are increasingly challenging the price and 
examining the medical necessity and cost-effectiveness of medical products and services, in addition to their safety and efficacy. We 
may need to conduct expensive pharmacoeconomic studies in order to demonstrate the medical necessity and cost-effectiveness of our 
products, in addition to the costs required to obtain the FDA approvals. Our product candidates may not be considered medically 
necessary or cost-effective. A payer’s decision to provide coverage for a drug product does not imply that an adequate reimbursement 
rate will be approved. Adequate third-party reimbursement may not be available to enable us to maintain price levels sufficient to 
realize an appropriate return on our investment in product development.

Some third-party payers also require pre-approval or prior authorization of coverage for new or innovative drug therapies before 

they will reimburse healthcare providers who prescribe such therapies or patients who use such prescription drugs. While we cannot 
predict whether any proposed cost-containment measures will be adopted or otherwise implemented in the future, these requirements 
or any announcement or adoption of such proposals could have a material adverse effect on our ability to obtain adequate prices for 
our product candidates and to operate profitably.

19

In international markets, reimbursement and healthcare payment systems vary significantly by country, and many countries have 

instituted price ceilings on specific products and therapies. There can be no assurance that our products will be considered medically 
reasonable and necessary for a specific indication, that our products will be considered cost-effective by third-party payers, that 
coverage or an adequate level of reimbursement will be available or that the third-party payers’ reimbursement policies will not 
adversely affect our ability to sell our products profitably.

In addition, in many foreign countries, the proposed pricing for a drug must be approved before it may be lawfully marketed. 

The requirements governing drug pricing and reimbursement vary widely from country to country. For example, the EU provides 
options for its member states to restrict the range of medicinal products for which their national health insurance systems provide 
reimbursement and to control the prices of medicinal products for human use. A member state may approve a specific price for the 
medicinal product or it may instead adopt a system of direct or indirect controls on the profitability of the company placing the 
medicinal product on the market. There can be no assurance that any country that has price controls or reimbursement limitations for 
pharmaceutical products will allow favorable reimbursement and pricing arrangements for any of our products. Historically, products 
launched in the EU do not follow price structures of the United States and generally prices tend to be significantly lower. 

Healthcare Reform 

In the U.S. and foreign jurisdictions, there have been a number of legislative and regulatory changes to the healthcare system 
that could affect our future results of operations. In particular, there have been and continue to be a number of initiatives at the U.S. 
federal and state levels that seek to reduce healthcare costs.

In the U.S., the Medicare Prescription Drug, Improvement, and Modernization Act of 2003, or the Medicare Modernization Act, 

changed the way Medicare covers and pays for pharmaceutical products. The Medicare Modernization Act expanded Medicare 
coverage for drug purchases by the elderly by establishing Medicare Part D and introduced a new reimbursement methodology based 
on average sales prices for physician administered drugs under Medicare Part B. In addition, this legislation provided authority for 
limiting the number of drugs that will be covered in any therapeutic class under the new Medicare Part D program. Cost reduction 
initiatives and other provisions of this legislation could decrease the coverage and reimbursement rate that our customers receive for 
any of our approved products. While the Medicare Modernization Act applies only to drug benefits for Medicare beneficiaries, private 
payers often follow Medicare coverage policy and payment limitations in setting their own reimbursement rates. Therefore, any 
reduction in reimbursement that results from the Medicare Modernization Act may result in a similar reduction in payments from 
private payers.

Enacted in March 2010, the Patient Protection and Affordable Care Act, as amended, or PPACA, is a sweeping law intended to 
broaden access to health insurance, reduce or constrain the growth of healthcare spending, enhance remedies against healthcare fraud 
and abuse, add new transparency requirements for healthcare and health insurance industries, impose new taxes and fees on 
pharmaceutical and medical device manufacturers and impose additional health policy reforms. Among other things, PPACA revises 
the definition of “average manufacturer price” for reporting purposes, which could increase the amount of Medicaid drug rebates to 
states. Further, the PPACA also imposes a significant annual fee on companies that manufacture or import branded prescription drug 
products. Other legislative changes have been proposed and adopted since PPACA was enacted. These new laws may result in 
reductions in Medicare and other healthcare funding, which could have a material adverse effect on our customers and accordingly, 
our financial operations. For example, in 2020, HHS and CMS issued various rules that are expected to impact, among others, price 
reductions from pharmaceutical manufacturers to plan sponsors under Part D, fee arrangements between pharmacy benefit managers 
and manufacturers, importation of prescription drugs from Canada and other countries, manufacturer price reporting requirements 
under the Medicaid Drug Rebate Program, including regulations that affect manufacturer-sponsored patient assistance programs 
subject to pharmacy benefit manager accumulator programs and Best Price reporting related to certain value-based purchasing 
arrangements. Multiple lawsuits have been brought against the HHS challenging various aspects of these new rules. In January 2021, 
the Biden administration issued a “regulatory freeze” memorandum that directs department and agency heads to review new or 
pending rules of the prior administration. It is unclear whether these new regulations will be withdrawn or when they will become 
fully effective under the current administration. The impact of these lawsuits as well as legislative, executive, and administrative 
actions of the current administration on us and the pharmaceutical industry as a whole is unclear.

We expect that PPACA, as well as other healthcare reform measures that have been and may be adopted in the future, may 

result in more rigorous coverage criteria and in additional downward pressure on the price that we receive for any approved product, 
and could seriously harm our future revenue. Any reduction in reimbursement from Medicare or other government programs may 
result in a similar reduction in payments from private payers. The implementation of cost containment measures or other healthcare 
reforms may prevent us from being able to generate revenue, attain profitability, or commercialize our products.

20

Since its enactment, there remain judicial and Congressional challenges to certain aspects of the PPACA, and we expect there 

will be additional challenges and amendments to the PPACA in the future. Any changes to the PPACA are likely to have an impact on 
our results of operations, and may have a material adverse effect on our business. In particular, on December 18, 2019, the U.S. Court 
of Appeals for the 5th Circuit upheld the District Court ruling that the individual mandate was unconstitutional and remanded the case 
to the District Court. In November 2020, the United States Supreme Court held oral arguments on this case and is expected to decide 
on this case by mid-2021. It is uncertain how the United States Supreme Court will rule on this case. We cannot predict how this 
decision or future litigation will impact our business, or what other healthcare measures and regulations will ultimately be 
implemented at the federal or state level or their effect on our business.

In addition, different pricing and reimbursement schemes exist in other countries. In the European Community, governments 

influence the price of pharmaceutical products through their pricing and reimbursement rules and control of national healthcare 
systems that fund a large part of the cost of those products to consumers. Some jurisdictions operate positive and negative list systems 
under which products may be marketed only once a reimbursement price has been agreed upon. Some of these countries may require, 
as condition of obtaining reimbursement or pricing approval, the completion of clinical trials that compare the cost-effectiveness of a 
particular product candidate to currently available therapies. Other member states allow companies to fix their own prices for 
medicines, but monitor and control company profits. The downward pressure on healthcare costs in general, particularly prescription 
drugs, has become very intense. As a result, increasingly high barriers are being erected to the entry of new products. In addition, in 
some countries, cross-border imports from low-priced markets exert a commercial pressure on pricing within a country.

Other Healthcare Laws and Compliance Requirements

In the U.S., the research, manufacturing, distribution, sale and promotion of drug products that we are developing are subject to 

regulation by various federal, state and local authorities in addition to the FDA, including the Centers for Medicare & Medicaid 
Services, other divisions of the U.S. Department of Health and Human Services (e.g., the Office of Inspector General), the U.S. 
Department of Justice, state Attorneys General, and other state and local government agencies. For example, sales, marketing and 
scientific/educational grant programs must comply with applicable health care fraud and abuse laws, such as the federal Anti-
Kickback Statute, the federal False Claims Act, Stark law, and implementing regulations, and similar state laws. Pricing and rebate 
programs must comply with the Medicaid Drug Rebate Program requirements of the Omnibus Budget Reconciliation Act of 1990, as 
amended, and the Veterans Health Care Act of 1992, as amended. If products are made available to authorized users of the Federal 
Supply Schedule of the General Services Administration, additional laws and requirements apply. Other laws and regulations that may 
apply to prescription drug manufacturers include the Sunshine Act, prescription drug price reporting requirements, and various state 
transparency and reporting laws. All business activities of prescription drug manufacturers are also potentially subject to federal and 
state consumer protection and unfair competition laws.

The federal Anti-Kickback Statute prohibits any person, including a prescription drug manufacturer (or a party acting on its 
behalf), from knowingly and willfully soliciting, receiving, offering or providing remuneration, directly or indirectly, to induce or 
reward either the referral of an individual, or the furnishing, recommending, or arranging for a good or service, for which payment 
may be made under a federal healthcare program such as the Medicare and Medicaid programs. This statute can be applied broadly to 
include arrangements between pharmaceutical manufacturers on one hand and any referral source on the other, including prescribers, 
purchasers, and formulary managers. The term “remuneration” has been broadly interpreted to include anything of value, including, 
for example, gifts, discounts, the furnishing of supplies or equipment, credit arrangements, payments of cash, waivers of payments, 
ownership interests, and service fees, unless expressly exempted or protected by a safe harbor. Further, the statute has been interpreted 
to cover any arrangement where one purpose of the remuneration was to obtain remuneration in exchange for referral or to induce 
further referrals for an item or service. Although there are a number of statutory exemptions and regulatory safe harbors protecting 
certain legitimate business arrangements from prosecution, the exemptions and safe harbors are drawn narrowly, and practices that 
involve remuneration intended to induce prescribing, purchasing or recommending may be subject to scrutiny if they do not qualify 
for an exemption or safe harbor. Our practices may not in all cases meet all of the criteria of an applicable safe harbor for protection 
from liability under the federal Anti-Kickback Statute. The reach of the Anti-Kickback Statute was broadened by PPACA, which, 
among other things, amends the intent requirement of the federal Anti-Kickback Statute such that the government does not need to 
prove that a person had the intent to specifically violate the statute in order to find a violation. In addition, the PPACA provides that 
the government may assert that a claim including items or services resulting from a violation of the federal Anti-Kickback Statute 
constitutes a false or fraudulent claim for purposes of the federal False Claims Act (discussed below) or the civil monetary penalties 
statute, which imposes fines against any person who is determined to have presented or caused to be presented claims to a federal 
healthcare program that the person knows or should know is for an item or service that was not provided as claimed or is false or 
fraudulent. Additionally, many states have adopted laws similar to the federal Anti-Kickback Statute, and some of these state 
prohibitions apply to referral of patients for healthcare items or services reimbursed by any third-party payer, not only the Medicare 
and Medicaid programs in at least some cases, and do not expressly provide for certain safe harbors or impose different requirements 
for safe harbor protection under applicable state laws.

21

The federal False Claims Act imposes liability on any person or entity that, among other things, knowingly presents, or causes 
to be presented, a false or fraudulent claim for payment by a federal healthcare program. The qui tam provisions of the False Claims 
Act allow a private individual to bring civil actions on behalf of the federal government alleging that the defendant has submitted or 
cause to be submitted a false claim to the federal government, and to share in any monetary recovery. In recent years, the number of 
suits brought by private individuals has increased dramatically. In addition, various states have enacted false claims laws analogous to 
the False Claims Act. Many of these state laws apply where a claim is submitted to any third-party payer and not merely a federal 
healthcare program. There are many potential bases for liability under the False Claims Act. Liability arises, primarily, when an entity 
knowingly submits, or causes another to submit, a false claim for reimbursement to the federal government. The False Claims Act has 
been used to assert liability on the basis of inadequate care, kickbacks and other improper referrals, improperly reported government 
pricing metrics such as Best Price or Average Manufacturer Price, improper use of Medicare numbers when detailing the provider of 
services, improper promotion of off-label uses (i.e., uses not expressly approved by FDA in a drug’s label), and allegations as to 
misrepresentations with respect to the services rendered. Our future activities relating to the reporting of discount and rebate 
information and other information affecting federal, provincial, state and third party reimbursement of our products, and the sale and 
marketing of our products and our service arrangements or data purchases, among other activities, may be subject to scrutiny under 
these laws. We are unable to predict whether we would be subject to actions under the False Claims Act or a similar state law, or the 
impact of such actions. However, the cost of defending such claims, as well as any sanctions imposed, could adversely affect our 
financial performance. Also, the Health Insurance Portability and Accountability Act of 1996, or HIPAA, created several new federal 
crimes, including healthcare fraud, and false statements relating to healthcare matters. The healthcare fraud statute prohibits 
knowingly and willfully executing a scheme to defraud any healthcare benefit program, including private third-party payers. The false 
statements statute prohibits knowingly and willfully falsifying, concealing or covering up a material fact or making any materially 
false, fictitious or fraudulent statement in connection with the delivery of or payment for healthcare benefits, items or services.

In addition, we may be subject to, or our marketing activities may be limited by, data privacy and security regulation in the U.S. 

and foreign jurisdictions in which we conduct our business, including jurisdictions in which we conduct our clinical trials. For 
example, HIPAA and its implementing regulations established uniform federal standards for certain “covered entities” (healthcare 
providers, health plans and healthcare clearinghouses) governing the conduct of certain electronic healthcare transactions and 
protecting the security and privacy of protected health information. The American Recovery and Reinvestment Act of 2009 included 
expansion of HIPAA’s privacy and security standards called the Health Information Technology for Economic and Clinical Health 
Act, or HITECH. Among other things, HITECH makes HIPAA’s privacy and security standards directly applicable to “business 
associates”—independent contractors or agents of covered entities that create, receive, maintain, or transmit protected health 
information in connection with providing a service for or on behalf of a covered entity. HITECH also increased the civil and criminal 
penalties that may be imposed against covered entities, business associates and possibly other persons, and gave state attorneys 
general new authority to file civil actions for damages or injunctions in federal courts to enforce the federal HIPAA laws and seek 
attorney’s fees and costs associated with pursuing federal civil actions. 

In addition, in May 2016, the EU formally adopted the General Data Protection Regulation, or GDPR, which applies to all EU 

member states from May 25, 2018 and replaced the European Union Data Protection Directive. The GDPR has imposed many new or 
additional requirements including, but not limited to, obtaining consent of the individuals to whom the personal data relates, the nature 
and scope of notifications provided to the individuals, the security and confidentiality of the personal data, data breach notification and 
using third party processors in connection with the processing of the personal data. Failure to comply with the GDPR could subject us 
to regulatory sanctions, delays in clinical trials, criminal prosecution and/or civil fines or penalties. Additionally, GDPR creates a 
direct cause of action by individual data subjects. The GDPR is a complex law and the regulatory guidance is still evolving, including 
with respect to how the GDPR should be applied in the context of clinical trials or other transactions from that we may gain access to 
personal data. Beginning in 2021, the UK will be a “third country” under the GDPR. These changes in the law will increase our costs 
of compliance and result in greater legal risks. Other countries maintain different privacy laws that we are subject to.

22

The Physician Payment Sunshine Act, or the Sunshine Act, requires applicable manufacturers and certain distributors of 
prescription drugs, among other products, that are available for coverage by Medicare, Medicaid or the Children’s Health Insurance 
Program to report annually to the Secretary of HHS: (i) payments or other transfers of value made by that entity, or by a third-party as 
directed by that entity, to covered recipients, such as physicians and teaching hospitals or to third parties on behalf of physicians or 
teaching hospitals; and (ii) physician ownership (including immediate family ownership) and investment interests in the entity. 
Effective January 1, 2022, these reporting and transparency requirements will extend to include payments and transfers of value made 
during the previous year to certain non-physician covered recipients, including physician assistants, nurse practitioners, and other mid-
level practitioners. There are also an increasing number of state and local “sunshine” or transparency and reporting laws that require 
applicable manufacturers to make reports to states on pricing and marketing information. The U.S. federal government discloses the 
reported information on a publicly available website. Several states have enacted legislation requiring pharmaceutical companies to, 
among other things, establish marketing compliance programs, file periodic reports with the state, make periodic public disclosures on 
sales, marketing, pricing, clinical trials and other activities, and/or register their sales representatives, as well as to prohibit pharmacies 
and other healthcare entities from providing certain physician prescribing data to pharmaceutical companies for use in sales and 
marketing, and to prohibit certain other sales and marketing practices. These federal, state, and local laws may affect our sales, 
marketing, and other promotional activities by imposing administrative and compliance burdens on us. If we fail to track and report as 
required by these laws or otherwise comply with these laws, we could be subject to the penalty provisions of the pertinent state and 
federal authorities.

Because of the breadth of these health care laws and the narrowness of available statutory and regulatory exemptions, it is 
possible that some of our business activities could be subject to challenge under one or more of such laws. If our operations are found 
to be in violation of any of the federal and state laws described above or any other governmental regulations that apply to us, we may 
be subject to penalties, including criminal and significant civil monetary penalties, damages, fines, imprisonment, exclusion from 
participation in government healthcare programs, injunctions, recall or seizure of products, total or partial suspension of production, 
denial or withdrawal of pre-marketing product approvals, private qui tam actions brought by individual whistleblowers in the name of 
the government or refusal to allow us to enter into supply contracts, including government contracts, the curtailment or restructuring 
of our operations, and corporate integrity agreement, which impose certain compliance, certification and reporting obligations, any of 
which could adversely affect our ability to operate our business and our results of operations. To the extent that any of our products 
are sold in a foreign country or if we contract with vendors or independent contractors outside of the U.S., we may be subject to 
similar foreign laws and regulations, which may include, for instance, applicable post-approval requirements, including safety 
surveillance, anti-corruption/anti-bribery laws,  anti-kickback laws, healthcare fraud and abuse laws, and implementation of corporate 
compliance programs and reporting of payments or transfers of value to healthcare professionals. While we are not aware of any 
current issues, we are unable to predict whether we will be subject to actions under applicable healthcare laws, or the impact of such 
actions on our business. However, the costs of defending such actions or claims, as well as any sanctions imposed, could result in a 
material adverse effect on our business or financial condition.

Environmental Matters

Our operations require the use of hazardous materials (including biological materials) which subject us to a variety of federal, 

provincial and local environmental and safety laws and regulations. Some of the regulations under the current regulatory structure 
provide for strict liability, holding a party potentially liable without regard to fault or negligence. We could be held liable for damages 
and fines as a result of our, or someone else’s, business operations should contamination of the environment or individual exposure to 
hazardous substances occur. We cannot predict how changes in laws or development of new regulations will affect our business 
operations or the cost of compliance.

Human Capital

Our board of directors and management recognize that creating long term enterprise value is advanced by considering the interests 

and concerns of many stakeholders, including the Company’s employees. As of December 31, 2020, we employed 129 employees, 
including 122 full-time and part-time permanent employees, of which 108 are located in Canada and 14 are located in the United States. 
Of our employees, 90 were primarily engaged in research and development, 38 of whom hold a Ph.D. or M.D. (or equivalent) degree. 
None of our employees are represented by a labor union. We have not experienced any work stoppages and we consider our relations 
with our employees to be good. 

23

As competition for qualified personnel in the biotechnology and pharmaceutical field is intense, attracting and retaining qualified 
employees at all levels is critical to our business. We have established comprehensive and competitive compensation, leave and benefits 
programs in order to attract and retain the highly qualified personnel essential to our business. In addition to providing our employees 
with competitive salaries, we believe that employees should share in the potential financial gains resulting from the advancement of our 
programs and our practice is to award stock options to permanent employees, both upon initial hiring and annually thereafter, and pay 
annual bonuses to permanent employees based on the achievement of corporate and/or personal objectives. Our leave programs include 
paid vacation, personal, sick, disability and other paid and unpaid leaves. Our health and wellness programs include medical, dental, 
vision care, retirement savings programs and other benefits.  

As a biopharmaceutical company with highly educated employees, we believe that our employees must stay current with advances 

in our industry and continue to grow in their careers.  We offer a variety of internal training and development opportunities as well as 
dedicated resources for colleagues to attend conferences and external professional development programs.

We are committed to diversity, equity and inclusion, or DEI, at all levels of our company and in 2020, established a joint 
management/employee DEI Committee to progress this important issue.  We will continue to focus on measuring and extending our 
diversity and inclusion initiatives across our entire workforce. We recruit the best qualified employees regardless of gender, ethnicity or 
other protected traits and it is our policy to comply with all applicable laws related to discrimination in the workplace. 

Finally, in response to the COVID-19 pandemic, we continue to provide many of our employees the option to work from home, 
implemented a halt of non-essential business travel since March 2020, and offered employees the ability to access additional paid days off 
for child, elder and/or self-care.  As some of our employees have transitioned back to our premises to continue critical on-site work, we 
have implemented additional safety and infection prevention measures including enhanced cleaning, additional personal protective 
equipment, and contact tracing protocols. 

Manufacturing

We currently rely, and expect to continue to rely, on third parties and our collaborators for the manufacture of our product 

candidates for pre-clinical and clinical testing, as well as for commercial manufacture if our product candidates receive marketing 
approval. Accordingly, we have not internally developed any manufacturing facilities or hired related personnel.

To date, we have obtained materials for our product candidates from multiple third-party manufacturers. We believe that all of 

the materials required for the manufacture of our product candidates can be obtained from more than one source. However, the 
manufacturing processes for each of our product candidates vary and sourcing adequate supplies may be made more difficult 
depending on the type of product candidate involved. Our product candidates generally can be manufactured in reliable and 
reproducible synthetic processes from readily available starting materials, excipients and packaging components. The drug substance 
chemistry generally is amenable to scale-up and does not require unusual equipment in the manufacturing processes.

Corporate Information

We were incorporated in the Province of British Columbia on November 5, 1996 under the predecessor to the Business 
Corporations Act (British Columbia) under the name “Xenon Bioresearch Inc.” We continued from British Columbia to the federal 
jurisdiction pursuant to Section 187 of the Canada Business Corporations Act, or the CBCA, on May 17, 2000 and concurrently 
changed our name to “Xenon Genetics Inc.” We registered as an extra-provincial company in British Columbia on July 10, 2000 and 
changed our name to “Xenon Pharmaceuticals Inc.” on August 24, 2004. We have one wholly-owned subsidiary as at December 31, 
2020, Xenon Pharmaceuticals USA Inc., which was incorporated in Delaware on December 2, 2016. Our principal executive offices 
are located at 200 – 3650 Gilmore Way, Burnaby, British Columbia, Canada V5G 4W8, and our telephone number is (604) 484-3300. 
We are a reporting issuer in British Columbia, Alberta and Ontario, but our shares are not listed on any recognized Canadian stock 
exchange. Our common shares trade on the Nasdaq Global Market under the symbol “XENE.”

Where You Can Find Additional Information

We make available free of charge through our investor relations website, http://investor.xenon-pharma.com, our annual reports, 

quarterly reports, current reports, proxy statements and all amendments to those reports as soon as reasonably practicable after such 
material is electronically filed or furnished with the U.S. Securities and Exchange Commission, or SEC. These reports may also be 
obtained without charge by contacting Investor Relations, Xenon Pharmaceuticals Inc., 200 – 3650 Gilmore Way, Burnaby, British 
Columbia, Canada V5G 4W8, e-mail: investors@xenon-pharma.com. Our website and the information contained therein or 
incorporated therein are not intended to be incorporated into this Annual Report on Form 10-K. The SEC maintains a website that 
contains reports, proxy and information statements, and other information regarding reports that we file or furnish electronically with 
them at www.sec.gov. Additional information related to Xenon is also available on SEDAR at www.sedar.com. 

24

Item 1A. Risk Factors

You should carefully consider the following risk factors, in addition to the other information contained in this report, including 
the section of this report captioned “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and 
our financial statements and related notes. If any of the events described in the following risk factors and the risks described 
elsewhere in this report occurs, our business, operating results and financial condition could be seriously harmed. This report on 
Form 10-K also contains forward-looking statements that involve risks and uncertainties. Our actual results could differ materially 
from those anticipated in the forward-looking statements as a result of factors that are described below and elsewhere in this report. 

Risks Related to Our Financial Condition and Capital Requirements

We have incurred significant losses since our inception and anticipate that we will continue to incur significant losses for the 

foreseeable future.

We do not expect to have sustained profitability for the foreseeable future. We had net losses of $28.8 million for the year ended 

December 31, 2020 and an accumulated deficit of $278.5 million as of December 31, 2020, which were driven by expenses incurred 
in connection with our research and development programs and from general and administrative costs associated with our operations.

We have devoted most of our financial resources to research and development, including our clinical and pre-clinical 
development activities. To date, we have financed our operations through the sale of equity securities, funding received from our 
licensees and collaborators, debt financing and, to a lesser extent, government funding. We do not generate any revenue from product 
sales and our product candidates will require substantial additional investment before they may provide us with any revenue. 

We expect to incur significant expenses and increasing operating losses for the foreseeable future as we:

•

•

•

•

•

•

•

continue our research and pre-clinical and clinical development of our product candidates;

expand the scope of our clinical studies for our current and prospective product candidates;

initiate additional pre-clinical, clinical or other studies for our product candidates;

change or add additional manufacturers or suppliers and manufacture drug supply and drug product for clinical trials and 
commercialization;

seek regulatory and marketing approvals for any of our product candidates that successfully complete clinical studies;

seek to identify and validate additional product candidates;

acquire or in-license other product candidates and technologies;

• make milestone or other payments under our in-license or other agreements, including, without limitation, payments to 

Memorial University of Newfoundland, 1st Order Pharmaceuticals, Inc. and other third parties;

• maintain, protect and expand our intellectual property portfolio;
•

establish a sales, marketing and distribution infrastructure to commercialize any products for which we may obtain 
marketing approval;

•

•

create additional infrastructure and incur additional costs to support our operations and our product development and 
planned future commercialization efforts; and

experience any delays or encounter issues with any of the above.

Our expenses could increase beyond expectations for a variety of reasons, including if we are required by the U.S. Food and 
Drug Administration, or FDA, the European Medicines Agency, or EMA, Health Canada, or other regulatory agencies, domestic or 
foreign, to perform clinical and other studies including post-approval commitments in addition to those that we currently anticipate. 
Our prior losses, combined with expected future losses, have had and will continue to have an adverse effect on our shareholders’ 
equity.

25

We do not generate any royalty or other revenue from product sales and may never become profitable on a U.S. GAAP basis. 

Our ability to generate meaningful revenue and achieve profitability on a U.S. GAAP basis depends on our ability, alone or with 
strategic collaborators, to successfully complete the development of, and obtain the regulatory approvals necessary to commercialize, 
our product candidates. Substantially all of our revenue since inception has consisted of upfront and milestone payments associated 
with our collaboration and license agreements. Revenue from these agreements is dependent on successful development of our product 
candidates by us or our collaborators. We do not generate any royalty or other revenue from product sales, and do not otherwise 
anticipate generating revenue from product sales for the foreseeable future, if ever. If any of our product candidates fail in clinical 
trials or do not gain regulatory approval, or if any of our future products, if any, once approved, fail to achieve market acceptance or 
adequate market share, we may never become profitable. Our ability to generate future revenue from product sales depends heavily on 
our success, and the success of our collaborators, in:

•

•

•

•

•

•

•

•

completing research, pre-clinical and clinical development of our product candidates;

seeking and obtaining regulatory and marketing approvals for product candidates for which we complete clinical studies;

commercializing products for which we obtain regulatory and marketing approval, either with a collaborator or, if launched 
independently, by establishing sales, marketing and distribution infrastructure;

negotiating favorable terms in any collaboration, licensing or other arrangements into which we may enter;

obtaining market acceptance of products for which we obtain regulatory and marketing approval as therapies;

addressing any competing technological and market developments;

establishing and maintaining supply and manufacturing relationships with third parties that can provide adequate (in amount 
and quality) products and services to support clinical development and the market demand for any approved products in the 
future;

developing sustainable, scalable, reproducible, and transferable manufacturing processes for any of our products approved 
in the future;

• maintaining, protecting, expanding and enforcing our portfolio of intellectual property rights, including patents, trade 

secrets and know-how;

•

•

implementing additional internal systems and infrastructure, as needed; and

attracting, hiring and retaining qualified personnel.

The scope of our future revenue will also depend upon the size of any markets in which our product candidates receive approval 

and the availability of insurance coverage and the availability and amount of reimbursement from third-party payers for future 
products, if any. If we are unable to achieve sufficient revenue to become profitable and remain so, our financial condition and 
operating results will be negatively impacted, and the market price of our common shares might be adversely impacted.

We will likely need to raise additional funding, which may not be available on acceptable terms, if at all. Failure to obtain this 

necessary capital when needed may force us to delay, limit or terminate our product development efforts or other operations.

Since our inception, we have dedicated most of our resources to the discovery and development of our pre-clinical and clinical 
product candidates, and we expect to continue to expend substantial resources doing so for the foreseeable future. These expenditures 
will include costs associated with research and development, potential milestone payments and royalties to third parties, 
manufacturing of product candidates and products approved for sale, conducting pre-clinical experiments and clinical trials and 
obtaining and maintaining regulatory approvals, as well as commercializing any products later approved for sale. During the year 
ended December 31, 2020, we incurred $50.5 million of costs associated with research and development, exclusive of costs incurred 
by our collaborators in developing our product candidates. 

Our current cash and cash equivalents and marketable securities are not expected to be sufficient to complete clinical 
development of any of our product candidates and prepare for commercializing any product candidate which receives regulatory 
approval. Accordingly, we will likely require substantial additional capital to continue our clinical development and potential 
commercialization activities. Our future capital requirements depend on many factors, including but not limited to:

•

•

the number and characteristics of the future product candidates we pursue either from our internal research efforts or 
through acquiring or in-licensing other product candidates or technologies;

the scope, progress, results and costs of independently researching and developing any of our future product candidates, 
including conducting pre-clinical research and clinical trials;

26

• whether our existing collaborations generate substantial milestone payments and, ultimately, royalties on future approved 

products for us;

•

•

•

•

•

•

•

the timing of, and the costs involved in, obtaining regulatory approvals for any future product candidates we develop 
independently;

the timing and magnitude of potential milestone payments and royalties under our product acquisition and in-license 
agreements;

the cost of pre-commercial activities in advance of product commercialization as well as the cost of commercializing any 
future products we develop independently that are approved for sale;

the cost of manufacturing our future product candidates and products, if any;

our ability to maintain existing collaborations and to establish new collaborations, licensing or other arrangements and the 
financial terms of such agreements;

the costs involved in preparing, filing, prosecuting, maintaining, defending and enforcing patents, including litigation costs 
and the outcome of such litigation; and

the timing, receipt and amount of sales of, or royalties on, our future products, if any.

We are unable to estimate the funds we will actually require to complete research and development of our product candidates or 

the funds required to commercialize any resulting product in the future.

Based on our research and development plans and our timing expectations related to the progress of our programs, we expect 
that our existing cash and cash equivalents and marketable securities as of the date of this report will enable us to fund our operating 
expenses and capital expenditure requirements for at least the next 12 months.

Our operating plan may change as a result of many factors currently unknown to us, and we may need to seek additional funds 

sooner than planned, through public or private equity or debt financings, government or other third-party funding, marketing and 
distribution arrangements and other collaborations, strategic alliances and licensing arrangements or a combination of these 
approaches. Raising funds in the future may present additional challenges and future financing may not be available in sufficient 
amounts or on terms acceptable to us, if at all.

We may allocate our limited resources to pursue a particular product candidate or indication and fail to capitalize on other 

product candidates or indications that may be more profitable or for which there is a greater likelihood of success.

Because we have limited financial and management resources, we focus on a limited number of research programs and product 
candidates. As a result, we may forgo or delay pursuit of opportunities with other product candidates or for other indications that later 
prove to have greater commercial potential. Our resource allocation decisions may cause us to fail to capitalize on viable commercial 
drugs or profitable market opportunities. Our spend on current and future research and development programs and product candidates 
for specific indications may not yield any commercially viable drugs. If we do not accurately evaluate the commercial potential or 
target market for a particular product candidate, we may relinquish valuable rights to that product candidate through collaboration, 
licensing or other arrangements in cases in which it would have been more advantageous for us to retain sole development and 
commercialization rights. 

27

Raising additional capital may cause dilution to our existing shareholders, restrict our operations or require us to relinquish 

rights to our technologies or product candidates.

The terms of any financing arrangements we enter into may adversely affect the holdings or the rights of our shareholders and 
the issuance of additional securities, whether equity or debt, by us, or the possibility of such issuance, may cause the market price of 
our common shares to decline. The sale of additional equity or convertible securities also would dilute all of our shareholders. For 
example, in November 2019, we entered into the November 2019 sales agreement with Jefferies LLC, or Jefferies, and Stifel, 
Nicolaus & Company, Incorporated, or Stifel, to sell up to $50.0 million of our common shares, from time to time, through an “at-the-
market” equity offering program under which Jefferies and Stifel acted as sales agents. As of January 2020, we had sold an aggregate 
of 3,252,330 common shares for proceeds of $48.8 million, net of commissions paid, but excluding transaction expenses. 
Additionally, in December 2019, pursuant to the terms of our collaboration agreement with Neurocrine Biosciences, Inc., or 
Neurocrine Biosciences, we issued 1,408,847 common shares to Neurocrine Biosciences for an aggregate purchase price of $20.0 
million. In January 2020, we completed an underwritten public offering of 3,750,000 of our common shares at a public offering price 
of $16.00 per share for proceeds of $56.7 million, net of underwriting discounts and commissions, but before other offering expenses. 
In February 2020, the underwriters of the January 2020 public offering exercised their option to purchase an additional 562,500 of our 
common shares at a public offering price of $16.00 per share, raising additional proceeds of $8.5 million, net of underwriting 
discounts and commissions, but before other offering expenses. Further, in August 2020, we entered into the August 2020 sales 
agreement with Jefferies and Stifel to sell up to $100.0 million of our common shares, from time to time, through an “at-the-market” 
equity offering program under which Jefferies and Stifel are acting as sales agents. As of March 1, 2021, we had sold an aggregate of 
733,000 common shares for proceeds of $10.7 million, net of commissions paid, but excluding estimated transaction expenses. We 
were also party to an amended and restated loan and security agreement with Silicon Valley Bank pursuant to which we had borrowed 
an aggregate principal amount of $15.5 million. The restated loan and security agreement was secured by substantially all of our assets 
except intellectual property and required compliance with various affirmative and negative covenants. In May 2020, we repaid the 
total outstanding term loan balance ahead of the maturity date and all encumbrances were removed by Silicon Valley Bank. Any 
future incurrence of indebtedness would result in increased fixed payment obligations and, potentially, the imposition of restrictive 
covenants. Such covenants could include limitations on our ability to incur additional debt, limitations on our ability to acquire, sell or 
license intellectual property rights and other operating restrictions that could adversely impact our ability to conduct our business. We 
could also be required to seek funds through arrangements with collaborators or otherwise at an earlier stage than otherwise would be 
desirable resulting in the loss of rights to some of our product candidates or other unfavorable terms, any of which may have a 
material adverse effect on our business, operating results and prospects. In addition, any additional fundraising efforts may divert our 
management from their day-to-day activities, which may adversely affect our ability to develop and commercialize our product 
candidates.

We are subject to risks associated with currency fluctuations which could impact our results of operations.

As of December 31, 2020, approximately 9% of our cash and cash equivalents and marketable securities were denominated in 

Canadian dollars. We incur significant expenses in Canadian dollars in connection with our operations in Canada. We do not currently 
engage in foreign currency hedging arrangements for our Canadian dollar expenditures, and, consequently, foreign currency 
fluctuations may adversely affect our earnings; however, in the future, we may engage in exchange rate hedging activities in an effort 
to mitigate the impact of exchange rate fluctuations. Any hedging technique we implement may fail to be effective. If our hedging 
activities are not effective, changes in currency exchange rates may have a more significant impact on the market price of our common 
shares.

We have historically financed our cash needs through a combination of sources including debt financing, which arrangements 

can contain operating and financial covenants that may restrict our business and financing activities.

We have historically financed our cash needs through a combination of collaboration agreements, equity and debt financings. 
Debt financings may require a security interest in substantially all of our assets and may also restrict our ability, among other things, 
to:

•

sell, transfer or otherwise dispose of any of our business assets or property, subject to limited exceptions;

• make material changes to our business;
•

enter into transactions resulting in significant changes to the voting control of our common shares;

• make certain changes to our organizational structure;
•

consolidate or merge with other entities or acquire other entities;

•

•

incur additional indebtedness or create encumbrances on our assets;

pay dividends, other than dividends paid solely in our common shares, or make distributions on and, in certain cases, 
repurchase our common shares;

28

•

•

enter into certain transactions with our affiliates;

repay subordinated indebtedness; or

• make certain investments.

For example, in August 2018, we entered into an amended and restated loan and security agreement with Silicon Valley Bank 

providing for a term loan to us with an aggregate principal amount of $15.5 million. Borrowings under this amended and restated loan 
and security agreement were secured by substantially all of our assets except intellectual property and also subjected us to certain 
affirmative and restrictive covenants.  In May 2020, we repaid our borrowings and terminated the amended and restated loan 
agreement; however, we may consider similar debt financing arrangements in the future. Any such debt financing we seek in the 
future may restrict our ability to finance our operations, engage in business activities or expand or fully pursue our business strategies. 

Risks Related to Our Business and Industry 

We and our collaborators face substantial competition in the markets for our product candidates, which may result in others 

discovering, developing or commercializing products before us or doing so more successfully than we or our collaborators do.

The biotechnology and pharmaceutical industries are characterized by rapidly advancing technologies, intense competition and a 

strong emphasis on proprietary products. We face potential competition in drug discovery and product development from many 
different approaches and sources, including major pharmaceutical, specialty pharmaceutical and biotechnology companies, academic 
institutions, governmental agencies, as well as public and private research institutions. Any product candidates that we or our 
collaborators successfully develop and commercialize will compete with existing products and any new products that may become 
available in the future.

The key competitive factors affecting the success of all of our product candidates, if approved, are likely to be their efficacy, 

safety and/or tolerability, convenience and ease of administration, price, the potential advantages of alternative products, the level of 
generic competition, and the availability of coverage and adequate reimbursement from government and other third-party payers.

Many of the companies against which we are competing or against which we may compete in the future have significantly 

greater financial resources and expertise in research and development, manufacturing, pre-clinical testing, conducting clinical trials, 
obtaining regulatory approvals and marketing approved products than we, or our collaborators, do. Mergers and acquisitions in the 
pharmaceutical and biotechnology industries may result in even more resources being concentrated among a smaller number of our 
competitors. Smaller or early stage companies may also prove to be significant competitors, particularly through collaboration 
arrangements with large and established companies.

Our commercial opportunities could be reduced or eliminated if our competitors develop and commercialize products or 

therapies that are safer, more effective, have fewer or less severe side effects, are more convenient or are less expensive than any 
products that we may develop. Our competitors also may obtain FDA, EMA, Health Canada or other regulatory approval for their 
products more rapidly than we may obtain approval for ours, which could result in our competitors establishing a strong market 
position before we are able to enter the market. In addition, our ability to compete may be affected by decisions made by insurers or 
other third-party payers.

To the extent that we are unable to compete effectively against one or more of our competitors in these areas, our business will 

not grow and our financial condition, results of operations and the market price of our common shares may suffer.

For example, if more than one of our proprietary or partnered products were approved for the treatment of epilepsy, we 
anticipate that they could potentially compete with one another and other anti-seizure medications, or ASMs. Currently prescribed 
ASMs, among others, include phenytoin, levetiracetam, brivaracetam, carbamazepine, cenobamate, clobazam, lamotrigine, valproate, 
oxcarbazepine, topiramate, lacosamide, ethosuximide, perampanel, cannabidiol, eslicarbazepine acetate and fenfluramine. The FDA 
has not yet approved any drug products specifically for KCNQ2 developmental and epileptic encephalopathy (otherwise known as 
KCNQ2-DEE or EIEE7) or for SCN8A developmental and epileptic encephalopathy (otherwise known as SCN8A-DEE or EIEE13), 
an early infantile epileptic encephalopathy due to gain-of-function mutations in the SCN8A gene that encodes the Nav1.6 sodium 
channel. There are other ASMs in clinical development that could potentially compete with our products, including products in 
development from Eisai Co., Ltd., GW Pharmaceuticals plc, Knopp Biosciences LLC, Marinus Pharmaceuticals, Inc., Neurocrine 
Biosciences, Inc., Ovid Therapeutics Inc., Praxis Precision Medicines, Inc., Sage Therapeutics, SK Life Science Inc., Supernus 
Pharmaceuticals, Inc., Takeda Pharmaceutical Company Ltd., UCB, Inc., Upsher-Smith Laboratories, Inc. , Zogenix Inc., and Zynerba 
Pharmaceuticals, Inc.  

29

We have no marketed proprietary products and have not yet completed clinical development beyond Phase 2 clinical trials, 
which makes it difficult to assess our ability to develop our future product candidates and commercialize any resulting products 
independently.

As a company, we have no previous experience in completing a Phase 3 clinical trial or in completing clinical trials in pediatric 

indications, and related regulatory requirements or the commercialization of products. We have not yet demonstrated our ability to 
independently and repeatedly conduct clinical development after Phase 2, conduct a pivotal clinical trial, obtain regulatory approval, 
manufacture drug product on a commercial scale or arrange for a third party to do so on our behalf, and commercialize therapeutic 
products. We will need to develop such abilities if we are to execute on our business strategy to develop and independently 
commercialize product candidates. To execute on our business plan for the development of independent programs, we will need to 
successfully: 

•

•

•

•

execute our clinical development and manufacturing plans for later-stage product candidates;

obtain required regulatory approvals in each jurisdiction in which we will seek to commercialize products;

build and maintain appropriate pre-commercialization capabilities as well as commercial sales, distribution and marketing 
capabilities;

gain market acceptance for our future products, if any; and

• manage our spending as costs and expenses increase due to clinical trials, regulatory approvals and commercialization 

activities.

If we are unsuccessful in accomplishing these objectives, we will not be able to develop and commercialize any future product 

candidates independently and could fail to realize the potential advantages of doing so.

If we are not successful in discovering, acquiring or in-licensing product candidates in addition to XEN496, XEN1101 and 

XEN007, our ability to expand our business and achieve our strategic objectives may be impaired.

We have built a product development pipeline by identifying product candidates either from our internal research efforts or 

through acquiring or in-licensing other product candidates or technologies. To date, our internal discovery efforts have yielded 
multiple development candidates, including XEN901, which we licensed to Neurocrine Biosciences and is now known as NBI-
921352, and XEN402, which has been acquired by Flexion to use in its product candidate FX301. Both our internal discovery efforts 
and our assessment of potential acquisition or in-licensing opportunities require substantial technical, financial and human resources, 
regardless of whether we identify any viable product candidates.

If we are unable to identify additional product candidates suitable for clinical development and commercialization either from 

our internal research efforts or through acquiring or in-licensing other product candidates or technologies, we may not be able to 
obtain product revenue in future periods, which likely would result in significant harm to our financial position and adversely impact 
the market price of our common shares.

If we fail to attract and retain senior management and key personnel, we may be unable to successfully develop our product 

candidates, perform our obligations under our collaboration agreements, conduct our clinical trials and commercialize our 
product candidates.

Our success depends in part on our continued ability to attract, retain and motivate highly qualified management, clinical and 

scientific personnel.

We could experience difficulties attracting and retaining qualified employees as competition for qualified personnel in the 
biotechnology and pharmaceutical field is intense. We are highly dependent upon our senior management, particularly Dr. Simon 
Pimstone, our current Chief Executive Officer, who will begin serving as the Executive Chair of the board of directors effective as of 
the date of our 2021 annual meeting of shareholders, or AGM, and Mr. Ian Mortimer, our current President and Chief Financial 
Officer who will take on the role of Chief Executive Officer while retaining his current responsibilities as our President and principal 
operating officer as of the date of our 2021 AGM, as well as other employees. The loss of services of either of these individuals or one 
or more of our other members of senior management could materially delay or even prevent the successful development of our 
product candidates. 

In addition, we will need to hire additional personnel as we expand our clinical development activities and develop commercial 

capabilities, including a sales infrastructure to support our independent commercialization efforts. We may not be able to attract and 
retain personnel on acceptable terms given the competition among numerous pharmaceutical and biotechnology companies for 
individuals with similar skill sets. The inability to recruit or loss of the services of any executive or key employee may impede the 
progress of our research, development and commercialization objectives.

30

Our employees, collaborators and other personnel may engage in misconduct or other improper activities, including non-

compliance with regulatory standards and requirements and insider trading. 

We are exposed to the risk of fraud or other misconduct by our employees, collaborators, vendors, principal investigators, 
consultants and commercial partners. Misconduct by these parties could include intentional failures to comply with the regulations of 
the FDA, EMA, Health Canada and other regulators, provide accurate information to the FDA, EMA, Health Canada and other 
regulators, comply with data privacy and security and healthcare fraud and abuse laws and regulations in the U.S. and abroad, report 
financial information or data accurately or disclose unauthorized activities to us. In particular, sales, marketing and business 
arrangements in the healthcare industry are subject to extensive laws and regulations intended to prevent fraud, misconduct, 
kickbacks, self-dealing and other abusive practices. Additionally, laws regarding data privacy and security, including the federal 
Health Insurance Portability and Accountability Act of 1996, or HIPAA, as amended by the Health Information Technology for 
Economic and Clinical Health Act of 2009, or HITECH, the General Data Protection Regulation (EU) 2016/679, or GDPR, and the 
Personal Information Protection and Electronic Documents Act, or PIPEDA, as well as comparable laws in other jurisdictions, may 
impose obligations with respect to safeguarding the privacy, use, security and transmission of individually identifiable health 
information such as genetic material or information we have obtained through our direct-to-patient web-based recruitment approach 
for identifying patients with rare or extreme phenotypes or patients identified for clinical trials.

Various laws and regulations may restrict or prohibit a wide range of pricing, discounting, marketing and promotion, sales 
commission, customer incentive programs and other business arrangements. Any misconduct could also involve the improper use of 
information obtained in the course of clinical studies, which could result in regulatory sanctions and cause serious harm to our 
reputation. We have adopted a code of conduct applicable to all of our employees, officers, directors, agents and representatives, 
including consultants, but it is not always possible to identify and deter misconduct, and the precautions we take to detect and prevent 
misconduct may not be effective in controlling unknown or unmanaged risks or losses or in protecting us from governmental 
investigations or other actions or lawsuits stemming from a failure to comply with these laws and regulations. If any such actions are 
instituted against us, and we are not successful in defending ourselves or asserting our rights, those actions could have a significant 
impact on our business, including the imposition of significant fines or other sanctions, exclusion from participation in government 
healthcare programs, or the curtailment or restructuring of our operations. 

We may encounter difficulties in managing our growth, including headcount, and expanding our operations successfully.

Our business strategy involves continued development and, where development is successful, commercialization of select 
product candidates. In order to execute on this strategy, we will need to build out a regulatory, sales, manufacturing, supply chain and 
marketing infrastructure and expand our development capabilities or contract with third parties to provide these capabilities and 
infrastructure for us. To achieve this, we will need to identify, hire and integrate personnel who have not worked together as a group 
previously. As our operations expand, we expect that we will need to manage additional relationships with various strategic 
collaborators, suppliers and other third parties.

Future growth will impose significant added responsibilities on members of management including the need to identify, recruit, 

maintain, motivate and integrate additional employees. Also, our management may need to divert a disproportionate amount of its 
attention away from our day-to-day activities and devote a substantial amount of time to managing these growth activities. 

We may not be able to effectively manage the expansion of our operations, which may result in weaknesses in our business, 

give rise to operational errors, loss of business opportunities, loss of employees and reduced productivity amongst remaining 
employees. Our expected growth could require significant capital expenditures and may divert financial resources from other projects, 
such as the development of existing and additional product candidates. If we are unable to effectively manage our growth, our 
expenses may increase more than expected, our ability to generate and grow revenue could be reduced, and we may not be able to 
implement our business strategy. Our future financial performance and our ability to commercialize product candidates and compete 
effectively will depend, in part, on our ability to effectively manage any future growth.

31

Our business and operations could suffer in the event of an information security incident such as a cybersecurity breach, 

system failure, or other compromise of our systems or those of a contractor or vendor.

To meet business objectives, we rely on both internal information technology systems and networks, and those of third parties 

and their vendors and contractors, to process and store sensitive data, including confidential research, business plans, financial 
information, intellectual property, and personal data that may be subject to legal protection. Computer system, network or 
telecommunications failures due to events such as damage from malware, unauthorized access, public health pandemics or epidemics 
(including, for example, the COVID-19 pandemic), terrorism, war, or natural disasters could interrupt our internal or partner 
operations. We are increasingly dependent upon our technology systems to operate our business with a growing remote workforce and 
our ability to effectively manage our business depends on the security, reliability and adequacy of our technology systems and data. A 
breakdown, invasion, corruption, destruction or breach of our or our third-party contractors’ or vendors’ technology systems, 
including cloud technologies, and/or unauthorized access to our data and information and cyberattacks such as phishing, social 
engineering, ransomware and other malware attacks could subject us to liability and increased costs or negatively impact the operation 
of our business. In addition, the loss of or alteration or other damage to pre-clinical trial data, data from completed or ongoing clinical 
trials for our product candidates or other confidential information could result in delays in our regulatory filings and development 
efforts, significantly increase our costs and result in other adverse impacts to our business. To the extent that any disruption or 
cybersecurity breach was to result in a loss of or alteration or other damage to our data, or inappropriate disclosure of confidential, 
personal or proprietary information, we could incur liability and other remediation costs, could suffer harm to our reputation and the 
development of our product candidates could be delayed.

To date, we have not experienced any material impact to our business, financial position or operations resulting from 

information security incidents or cyberattacks such as phishing, social engineering, ransomware or malware attacks; however, because 
of the frequently changing attack techniques, along with the increased volume and sophistication of such attacks, our business, 
financial position or operations could be adversely impacted in the future. This impact could result in reputational, competitive, 
operational or other business harm as well as financial costs and regulatory action. Moreover, the prevalent use of mobile devices that 
access confidential information and ability to work remotely increases the risk of data security breaches, which could lead to the loss 
of confidential information, trade secrets or other intellectual property. These risks may be heightened during the current COVID-19 
pandemic due to the increase in our and our vendors’ and contractors’ personnel working remotely. As cyber threats continue to 
evolve, we may be required to expend significant additional resources to continue to modify or enhance our protective measures or to 
investigate and remediate any information security vulnerabilities. While we have implemented security measures and, to date, have 
not detected a cybersecurity breach of our systems nor experienced a material system failure, our computer systems and the external 
systems and services used by our third-party contract manufacturers, or CMOs, third-party contract research organizations, or CROs, 
or other contractors, vendors, consultants, directors and partners remain potentially vulnerable to these events.

A variety of risks associated with international operations could materially adversely affect our business. 

As we engage in significant cross-border and international activities, we will be subject to risks related to international 

operations, including:

•

•

•

•

•

•

•

different regulatory requirements for initiating clinical trials and maintaining approval of drugs in foreign countries;

reduced protection for intellectual property rights in certain countries;

unexpected changes in tariffs, trade barriers and regulatory requirements;

economic weakness, including inflation, political instability or open conflict in particular foreign economies and markets;

differing and multiple payor reimbursement regimes, government payors or patient self-pay systems; 

compliance with tax, employment, immigration and labor laws for employees living or traveling abroad;

foreign currency fluctuations, which could result in increased operating expenses and reduced revenue, and other 
obligations of doing business in another country;

• workforce uncertainty in countries where labor unrest is more common than in North America;
•

likelihood of potential or actual violations of domestic and international anti-corruption laws, such as the U.S. Foreign 
Corrupt Practices Act and the U.K. Bribery Act, or of U.S. and international import, export and re-export control and 
sanctions laws and regulations, which likelihood may increase with an increase of operations in foreign jurisdictions;

•

•

tighter restrictions on privacy and the collection, use and retention of data, including clinical data and genetic material, may 
apply in jurisdictions outside of North America; 

business interruptions resulting from geopolitical actions, including war and terrorism, or natural disasters including 
earthquakes, typhoons, floods and fires; and 

32

•

supply and other disruptions resulting from the impact of public health epidemics, including the COVID-19 pandemic, on 
our strategic partners, third-party manufacturers, suppliers and other third parties upon which we rely.

If any of these issues were to occur, our business could be materially harmed.

Health pandemics or epidemics, including the COVID-19 pandemic and other public health crises may materially and adversely 

affect our business, financial condition and results of operations. 

The COVID-19 pandemic and other public health crises may materially and adversely affect our business, financial condition 

and results of operations in several ways. For example, because our supply chain for raw materials, drug substance and drug product is 
worldwide, including in countries impacted by COVID-19, it could be subject to significant disruptions.  There may be related 
restrictions on the export, import or shipment of raw materials, drug substance or drug product that could materially delay our business 
or clinical trials.

Certain of our research and development efforts are also conducted globally, including our ongoing Phase 2b XEN1101 (X-

TOLE) clinical trial, which includes investigative sites in North America and Europe, and our Phase 3 XEN496 (EPIK) clinical trial, 
which includes investigative sites in North America and is expected to include sites in Europe, Australia and Asia. We experienced a 
significant reduction in the rate of new patient enrollment in our X-TOLE trial due to the COVID-19 pandemic and our ability to 
complete patient enrollment will largely depend on future developments around COVID-19. In addition, our EPIK trial is dependent 
upon our ability to initiate clinical sites and enroll patients despite the ongoing COVID-19 pandemic.

We continue to provide many of our employees the option to work from home and implemented a halt of non-essential business 

travel since March 2020. As some of our employees have transitioned back to our premises, there is a risk that COVID-19 infections 
could break out at our offices or laboratory facilities and significantly affect our operations. Additionally, if any of our critical vendors 
are impacted, our business could be affected if we become unable to timely procure essential equipment, clinical trial drug product, 
supplies or services in adequate quantities and at acceptable prices.

The extent to which COVID-19 impacts our results will depend on future developments, which are highly uncertain and cannot 

be predicted, including the ongoing impact of the COVID-19 pandemic and the actions to contain COVID-19 or treat its impact, 
among others. In addition, due to the speed with which the COVID-19 situation continues to develop, there is uncertainty around its 
ultimate impact on public health, business operations and the overall economy; therefore, the negative impact on our financial 
position, operating results and liquidity cannot be reasonably estimated at this time, but the impact may be material.

U.S. holders of our common shares may suffer adverse tax consequences if we are characterized as a passive foreign investment 

company. 

Generally, for any taxable year in which 75% or more of our gross income is passive income, or at least 50% of the average 
quarterly value of our assets (which may be determined in part by the market value of our common shares, which is subject to change) 
are held for the production of, or produce, passive income, we would be characterized as a passive foreign investment company, or 
PFIC, for U.S. federal income tax purposes. Based on the price of our common shares and the composition of our gross income and 
gross assets, we do not believe we were a PFIC for the taxable years ended December 31, 2020 and 2019 but we could be a PFIC in 
subsequent years. Our status as a PFIC is a fact-intensive determination made on an annual basis, and we cannot provide any 
assurance regarding our PFIC status for future taxable years.

If we are a PFIC for any year, U.S. holders of our common shares may suffer adverse tax consequences. Gains realized by non-

corporate U.S. holders on the sale of our common shares would be taxed as ordinary income, rather than as capital gain, and the 
preferential tax rate applicable to dividends received on our common shares would be lost. Interest charges would also be added to 
taxes on gains and dividends realized by all U.S. holders. U.S. holders should consult their own tax advisors with respect to their 
particular circumstances. 

A U.S. holder may avoid these adverse tax consequences by timely making a qualified electing fund election. For each year that 

we would meet the PFIC gross income or asset test, an electing U.S. holder would be required to include in gross income its pro rata 
share of our net ordinary income and net capital gains, if any. A U.S. holder may make a qualified electing fund election only if we 
commit to provide U.S. holders with their pro rata share of our net ordinary income and net capital gains. We will provide, upon 
request, our U.S. holders with the information that is necessary in order for them to make a qualified electing fund election and to 
report their common shares of ordinary earnings and net capital gains for each year we believe we were a PFIC. U.S. holders should 
consult their own tax advisors with respect to making this election and the related reporting requirements.

33

A U.S. holder may also mitigate the adverse tax consequences by timely making a mark-to-market election. Generally, for each 
year that we meet the PFIC gross income or asset test, an electing U.S. holder would include in gross income the increase in the value 
of its common shares during each of its taxable years and deduct from gross income the decrease in the value of such shares during 
each of its taxable years. A mark-to-market election may be made and maintained only if our common shares are regularly traded on a 
qualified exchange, including the Nasdaq Global Market, or Nasdaq. Whether our common shares are regularly traded on a qualified 
exchange is an annual determination based on facts that, in part, are beyond our control. Accordingly, a U.S. holder might not be 
eligible to make a mark-to-market election to mitigate the adverse tax consequences if we are characterized as a PFIC. U.S. holders 
should consult their own tax advisors with respect to the possibility of making this election.

In addition, if we are or become a PFIC (or our PFIC status is uncertain), it may deter certain U.S. investors from purchasing our 

common shares, which could have an adverse impact on the market price of our common shares.

We may become subject to income tax in jurisdictions in which we are organized or operate, which would reduce our future 

earnings.

There is a risk that we may become subject to income tax in jurisdictions outside of Canada and the United States, if under the 

laws of any such jurisdiction, we are considered to be carrying on a trade or business there or earn income that is considered to be 
sourced there and we do not qualify for an exemption. In jurisdictions where we do not believe we are subject to tax, we can provide 
no certainty that tax authorities in those jurisdictions will not subject one or more tax years to examination. Tax examinations are often 
complex as tax authorities may disagree with the treatment of items reported by us, the result of which could have a material adverse 
effect on our operating results and financial condition.

Acquisitions, joint ventures or other strategic transactions could disrupt our business, cause dilution to our shareholders and 

otherwise harm our business.

We actively evaluate various strategic transactions on an ongoing basis, including the acquisition of other businesses, products 

or technologies as well as pursuing strategic alliances, joint ventures, licensing transactions or investments in complementary 
businesses. Any of these transactions could be material to our financial condition and operating results and expose us to many risks, 
including:

•

•

•

•

•

•

•

•

disruption in our relationships with collaborators or suppliers as a result of such a transaction;

unanticipated liabilities related to acquired companies;

difficulties integrating acquired personnel, technologies and operations into our existing business;

retention of key employees;

diversion of management time and focus from operating our business to pursuing strategic transactions and managing any 
such strategic alliances, joint ventures or acquisition integration challenges;

dilution to our shareholders if we issue equity in connection with such transactions;

increases in our expenses and reductions in our cash available for operations and other uses; and

possible write-offs or impairment charges relating to acquired businesses.

Foreign acquisitions involve unique risks in addition to those mentioned above, including those related to integration of 

operations across different cultures and languages, currency risks and the particular economic, political and regulatory risks associated 
with specific countries.

Also, the anticipated benefit of any strategic alliance, joint venture or acquisition may not materialize. Future acquisitions or 

dispositions could result in potentially dilutive issuances of our equity securities, the incurrence of debt, contingent liabilities or 
amortization expenses or write-offs of goodwill, any of which could harm our financial condition. We cannot predict the number, 
timing or size of future joint ventures or acquisitions, or the effect that any such transactions might have on our operating results.

34

If product liability lawsuits are brought against us, we may incur substantial liabilities and may be required to limit 

commercialization of our current and any future products.

We face an inherent risk of product liability as a result of the clinical testing of our product candidates, and we will face an even 
greater risk if we commercialize any product candidates. For example, we may be sued if any of our product candidates, including any 
that are developed in combination with other therapies, allegedly causes injury or is found to be otherwise unsuitable during product 
testing, manufacturing, marketing or sale. Any such product liability claims may include allegations of defects in manufacturing, 
defects in design, a failure to warn of dangers inherent in the product, negligence, strict liability and a breach of warranties. Claims 
could also be asserted under state consumer protection acts. If we cannot successfully defend ourselves against product liability 
claims, we may incur substantial liabilities or be required to limit commercialization of our product candidates. Even successful 
defense would require significant financial and management resources. There is also risk that third parties we have agreed to 
indemnify could incur liability. Regardless of the merits or eventual outcome, liability claims may result in:

•

•

decreased demand for our product candidates or any resulting products;

injury to our reputation;

• withdrawal of clinical trial participants;
•

costs to defend the related litigation;

•

•

•

•

•

•

a diversion of management’s time and our resources;

substantial monetary awards to trial participants or patients;

product recalls, withdrawals or labeling, marketing or promotional restrictions;

loss of revenue;

the inability to commercialize our product candidates; and

a decline in the market price of our common shares.

We currently carry product liability insurance of $10,000,000 per occurrence and $10,000,000 aggregate limit. We believe our 
product liability insurance coverage is appropriate relative to our current clinical programs; however, we may not be able to maintain 
insurance coverage at a reasonable cost or in sufficient amounts to protect us against losses due to liability. If and when we obtain 
marketing approval for product candidates, we intend to expand our insurance coverage to include the sale of commercial products; 
however, we may then be unable to obtain product liability insurance on commercially reasonable terms or in adequate amounts. On 
occasion, large judgments have been awarded in class action lawsuits based on drugs or medical treatments that had unanticipated 
adverse effects. A successful product liability claim or series of claims brought against us could cause the market price of our common 
shares to decline and, if judgments exceed our insurance coverage, could adversely affect our future results of operations and business.

Patients with certain of the diseases targeted by our product candidates are often already in severe and advanced stages of 
disease and have both known and unknown significant pre-existing and potentially life-threatening conditions. During the course of 
treatment, patients may suffer adverse events, including death, for reasons that may be related to our product candidates. Such events 
could subject us to costly litigation, require us to pay substantial amounts of money to injured patients, delay, negatively impact or end 
our opportunity to receive or maintain regulatory approval to market those product candidates, or require us to suspend or abandon our 
commercialization efforts. Even in a circumstance in which we do not believe that an adverse event is related to our products, the 
investigation into the circumstance may be time-consuming or inconclusive. These investigations may interrupt our sales efforts, delay 
our regulatory approval process in other countries, or impact and limit the type of regulatory approvals our product candidates receive 
or maintain. As a result of these factors, a product liability claim, even if successfully defended, could have a material adverse effect 
on our business, financial condition or results of operations.

35

Our current and future operations in the U.S. and elsewhere will be subject, directly or indirectly, to applicable federal and state 
anti-kickback, fraud and abuse, false claims, transparency, health information privacy and security, and other healthcare laws and 
regulations, which could expose us to criminal sanctions, civil penalties, contractual damages, reputational harm, administrative 
burdens, and diminished profits and future earnings.

Healthcare providers, physicians and third-party payers in the U.S. and elsewhere play a primary role in the recommendation 

and prescription of any product candidates for which we obtain marketing approval. Our current arrangements with health care 
providers and our future arrangements with third-party payers and customers may expose us to broadly applicable fraud and abuse and 
other healthcare laws and regulations, including, without limitation, the federal Anti-Kickback Statute and the federal False Claims 
Act, that may constrain the business or financial arrangements and relationships through which we market, sell and distribute any 
products for which we obtain marketing approval. In addition, we may be subject to transparency laws and patient privacy regulation 
by the federal government and by the U.S. states and foreign jurisdictions in which we conduct our business. The applicable federal, 
state and foreign healthcare laws and regulations that may affect our ability to operate include the following:

•

•

the federal Anti-Kickback Statute, which prohibits, among other things, persons from knowingly and willfully soliciting, 
offering, receiving or providing remuneration, directly or indirectly, in cash or in kind, to induce or reward either the 
referral of an individual for, or the purchase, order or recommendation of, any good or service for which payment may be 
made under federal and state healthcare programs such as Medicare and Medicaid;

federal civil and criminal false claims laws, including the federal False Claims Act, which can be enforced through civil 
whistleblower, or qui tam actions, as well as civil monetary penalty laws can impose criminal and civil penalties, 
assessment, and exclusion from participation for various forms of fraud and abuse involving the federal health care 
programs, such as Medicare and Medicaid;

• HIPAA, which imposes criminal and civil liability for, among other things, executing a scheme to defraud any healthcare 

benefit program and making false statements relating to healthcare matters;

•

•

the federal Physicians Payment Sunshine Act, also referred to as the CMS Open Payments, which requires applicable 
manufacturers of certain drugs, devices, biologics and medical supplies for which payment is available under Medicare, 
Medicaid or the Children’s Health Insurance Program (with certain exceptions) to report annually to CMS, information 
related to: certain payments or other transfers of value made to physicians, as defined by such law, and teaching hospitals 
and ownership or investment interests held by such healthcare professionals and their immediate family members; effective 
January 1, 2022, these reporting obligations will extend to include payments and transfers of value made and ownership 
interests held during the previous year to certain non-physician providers such as physician assistants and nurse 
practitioners; and

analogous state and foreign laws and regulations, such as state anti-kickback and false claims laws, which may apply to 
sales or marketing arrangements and claims involving healthcare items or services reimbursed by non-governmental third-
party payers, including private insurers; state and foreign laws that require pharmaceutical companies to comply with the 
pharmaceutical industry’s voluntary compliance guidelines and the relevant compliance guidance promulgated by the 
federal government or otherwise restrict payments that may be made to healthcare providers; state and foreign laws that 
require drug manufacturers to report information related to payments to physicians and other healthcare providers or 
marketing expenditures; state and local laws requiring the registration of pharmaceutical sales representatives; and state and 
foreign laws governing the collection, export, privacy, use and security of biological materials and health information in 
certain circumstances, many of which differ from each other in significant ways and may not have the same effect, thus 
complicating compliance efforts.

Efforts to ensure that our business arrangements with third parties will comply with applicable healthcare laws and regulations 

may involve substantial costs. It is possible that governmental authorities will conclude that our business practices may not comply 
with current or future statutes, regulations or case law involving applicable fraud and abuse or other healthcare laws and regulations. If 
our operations are found to be in violation of any of these laws or any other governmental regulations that may apply to us, we may be 
subject to significant civil, criminal and administrative penalties, including, without limitation, damages, fines, disgorgement, 
imprisonment, exclusion from participation in government healthcare programs, such as Medicare and Medicaid, integrity oversight 
and reporting obligations, and the curtailment or restructuring of our operations, which could have a material adverse effect on our 
business. If any of the physicians or other providers or entities with whom we expect to do business, including our collaborators, is 
found not to be in compliance with applicable laws, it may be subject to criminal, civil or administrative sanctions, including 
exclusions from participation in government healthcare programs, which could also materially affect our business.

36

If we fail to comply with environmental, health and safety laws and regulations, we could become subject to fines or penalties or 

incur costs that could have a material adverse effect on the success of our business.

Our research and development activities involve the controlled use of potentially harmful biological materials as well as 
hazardous materials, chemicals, and various radioactive compounds typically employed in molecular and cellular biology. For 
example, we routinely use cells in culture and we employ small amounts of radioisotopes. We cannot completely eliminate the risk of 
accidental contamination or injury from the use, storage, handling, or disposal of these materials through our maintenance of up-to-
date licensing and training programs. In the event of contamination or injury, we could be held liable for damages that result, and any 
liability could exceed our resources. We currently carry insurance covering certain claims arising from our use of these materials. 
However, if we are unable to maintain our insurance coverage at a reasonable cost and with adequate coverage, our insurance may not 
cover any liability that may arise. We are subject to Canadian federal, provincial, and local laws and regulations and may be subject to 
U.S. and/or foreign, laws and regulations governing the use, storage, handling, and disposal of these materials and specified waste 
products. Complying with regulations regarding the use of these materials could be costly, and if we fail to comply with these 
regulations, it could have a material adverse effect on our operations and profitability.

We or the third parties upon whom we depend may be adversely affected by earthquakes or other natural disasters and our 

business continuity and disaster recovery plans may not adequately protect us from serious disaster. 

Our headquarters are located in Burnaby, British Columbia, Canada. We are vulnerable to natural disasters such as earthquakes 
that could disrupt our operations. If a natural disaster, power outage, fire or other event occurred that prevented us from using all or a 
significant portion of our headquarters, that damaged critical infrastructure, such as the manufacturing facilities of our CMOs, or that 
otherwise disrupted operations, it may be difficult or, in certain cases, impossible for us to continue our business for a substantial 
period of time. Although we carry insurance for earthquakes and other natural disasters, we may not carry sufficient business 
interruption insurance to compensate us for all losses that may occur. The disaster recovery and business continuity plans we have in 
place may not be adequate in the event of a serious disaster or similar event. We may incur substantial expenses as a result of a natural 
disaster or earthquake, which could have a material adverse effect on our business. In addition, we may lose samples or other valuable 
data. The occurrence of any of the foregoing could have a material adverse effect on our business.

Risks Related to Development, Clinical Testing and Regulatory Approval of Our Product Candidates

The regulatory approval processes of the FDA, EMA, Health Canada and regulators in other jurisdictions are lengthy, time-
consuming and inherently unpredictable. If we, or our collaborators, are unable to obtain regulatory approval for our product 
candidates in a timely manner, or at all, our business will be substantially harmed.

The regulatory approval process is expensive and the time required to obtain approval from the FDA, EMA, Health Canada or 

other regulatory authorities in other jurisdictions to sell any product is uncertain and may take years. Whether regulatory approval will 
be granted is unpredictable and depends upon numerous factors, including the substantial discretion of the regulatory authorities. 
Approval policies, regulations, or the type and amount of pre-clinical and clinical data necessary to gain approval may change during 
the course of a product candidate’s clinical development and may vary among jurisdictions. Moreover, pre-clinical and clinical data 
are often susceptible to varying interpretations and analyses, and even if the pre-clinical studies show promising results and clinical 
trials are successfully completed, we cannot guarantee that the FDA, EMA, Health Canada or other regulatory authorities in other 
jurisdictions will interpret the results as we do, and more trials, manufacturing-related studies or non-clinical studies could be required 
before we submit our product candidates for approval. Many companies that have believed their product candidates performed 
satisfactorily in pre-clinical studies and clinical trials have nonetheless failed to obtain marketing approval of their products. To the 
extent that the results of our studies and trials are not satisfactory to the FDA, EMA, Health Canada or other regulatory authorities in 
other jurisdictions for support of a marketing application, approval of our product candidates may be significantly delayed, or we may 
be required to expend significant additional resources, which may not be available to us, to conduct additional trials in support of 
potential approval of our product candidates. It is also possible that none of our existing product candidates or any of our future 
product candidates will ever obtain regulatory approval, even if we expend substantial time and resources seeking such approval.

Our product candidates could fail to receive regulatory approval for many reasons, including the following:

•

the FDA, EMA, Health Canada or other regulatory authorities may disagree with the design or implementation of our or our 
collaborators’ clinical trials;

• we or our collaborators may be unable to demonstrate to the satisfaction of the FDA, EMA, Health Canada or other 

regulatory authorities that a product candidate is safe and effective for its proposed indication;

•

the results of clinical trials may not meet the level of statistical significance required by the FDA, EMA, Health Canada or 
other regulatory authorities for approval;

• we, or our collaborators, may be unable to demonstrate that a product candidate’s clinical and other benefits outweigh its 

safety risks;

37

•

•

•

•

•

the FDA, EMA, Health Canada or other regulatory authorities may disagree with our or our collaborators’ interpretation of 
data from pre-clinical studies or clinical trials;

the data collected from clinical trials of our product candidates may not be sufficient to support the submission of a New 
Drug Application, or NDA, or other submission or to obtain regulatory approval in the U.S. or elsewhere;

the FDA, EMA, Health Canada or other regulatory authorities may fail to approve the manufacturing processes, controls or 
facilities of third-party manufacturers with which we or our collaborators contract for clinical and commercial supplies; 

the pre-approval inspections of manufacturing, clinical sites or clinical service providers, conducted by regulatory 
authorities may identify errors or omissions that may results in the product candidate not being approved; and 

the approval policies or regulations of the FDA, EMA, Health Canada or other regulatory authorities may significantly 
change in a manner rendering our or our collaborators’ clinical data insufficient for approval.

Even if we, or our collaborators, obtain approval for a particular product, regulatory authorities may grant approval contingent 
on the performance of costly post-approval commitments including clinical trials, or may approve a product with a label that does not 
include the labeling claims necessary or desirable for the successful commercialization of that product.

In addition, because there may be approved treatments for some of the diseases for which we may seek approval, in order to 

receive regulatory approval, we may need to demonstrate in clinical trials that the product candidates we develop to treat those 
diseases are not only safe and effective, but may need to be compared to existing products, which may make it more difficult for our 
product candidates to receive regulatory approval or adequate reimbursement. 

Clinical drug development involves a lengthy and expensive process with uncertain timelines and uncertain outcomes. If 
clinical trials are prolonged, delayed, not completed, unsuccessful or inconclusive, we could experience material harm to our 
business and the market price of our common shares. In addition, we, or our collaborators, may be unable to commercialize our 
product candidates on a timely basis or at all.

Clinical testing of product candidates is expensive and, depending on the stage of development, can take a substantial period of 

time to complete. Clinical trial outcomes are inherently uncertain, and failure can occur at any time during the clinical development 
process and can have a material impact on our business and the market price of our common shares.

Clinical trials can be halted or delayed for a variety of reasons, including those related to:

•

•

•

•

•

•

•

•

•

•

•

•

•

side effects or adverse events in study participants presenting an unacceptable safety risk;

inability to reach agreement with prospective CROs and clinical trial sites, or the breach of such agreements;

failure of third-party contractors, such as CROs, or investigators to comply with regulatory requirements, including GCPs;

delay or failure in obtaining the necessary approvals from regulators or institutional review boards, or IRBs, in order to 
commence a clinical trial at a prospective trial site, or their suspension or termination of a clinical trial once commenced;

a requirement to undertake and complete additional pre-clinical studies to generate data required to initiate clinical 
development or to support the continued clinical development of a product candidate or submission of an NDA;

inability to enroll sufficient patients to complete a protocol, particularly in orphan diseases;

difficulty in having patients complete a trial, adhere to the trial protocol, or return for post-treatment follow-up;

clinical sites deviating from trial protocol or dropping out of a trial;

problems with drug product or drug substance storage, stability and distribution;

our inability to add new or additional clinical trial sites;

our inability to manufacture, or obtain from third parties, adequate supply of drug substance or drug product sufficient to 
complete our pre-clinical studies and clinical trials; 

unforeseen disruptions, caused by man-made or natural disasters or public health pandemics or epidemics or other business 
interruptions, including, for example, the COVID-19 pandemic; and

governmental or regulatory delays and changes in regulatory requirements, policy and guidelines.

38

These risks and uncertainties could impact any of our or our collaborators’ clinical programs and any of the clinical, regulatory 
or operational events described above could change our or our collaborators’ planned clinical and regulatory activities. For example, 
due to the impact of the COVID-19 pandemic, we experienced a reduction in the rate of new patient enrollment in our ongoing 
XEN1101 X-TOLE trial, which includes clinical trial sites in North America and Europe and we have experienced an impact on the 
initiation of clinical sites in our EPIK trial which includes investigative sites in North America and is expected to include clinical sites 
in Europe, Australia and Asia. COVID-19 may continue to impact the enrollment of patients in our XEN496 EPIK clinical trial. 

The results of any Phase 3 or other pivotal clinical trial, including without limitation our EPIK trial, may not be adequate to 

support marketing approval. These clinical trials are lengthy and, with respect to non-orphan indications, usually involve many 
hundreds to thousands of patients. With respect to orphan indications like KCNQ2-DEE, SCN8A-DEE or CAE, clinical trials can also 
be lengthy due to the challenge of identifying and recruiting patients. In addition, if the FDA, EMA, Health Canada or another 
regulator disagrees with our or our collaborators’ choice of the key testing criterion, or primary endpoint, the results for the primary 
endpoint are not robust or significant relative to the control group of patients not receiving the experimental therapy, or our statistical 
analysis is inconclusive, such regulator may refuse to approve our product candidate in the region in which it has jurisdiction. The 
FDA, EMA, Health Canada or other regulators also may require additional clinical trials as a condition for approving any of these 
product candidates.

We could also encounter delays if a clinical trial is suspended or terminated by us, by our collaborators, by the IRBs of the 
institutions in which such trial is being conducted, by any Data Safety Monitoring Board for such trial, or by the FDA, EMA, Health 
Canada or other regulatory authorities. Such authorities may impose such a suspension or termination due to a number of factors, 
including failure to conduct the clinical trial in accordance with regulatory requirements or our clinical protocols, inspection of the 
clinical trial operations or trial site by the FDA, EMA, Health Canada or other regulatory authorities resulting in the imposition of a 
clinical hold, product candidate manufacturing problems, unforeseen safety issues or adverse side effects, failure to demonstrate a 
benefit from using a drug, changes in governmental regulations or administrative actions or lack of adequate funding to continue the 
clinical trial. In addition, delays can occur due to safety concerns arising from trials or other clinical data regarding another company’s 
product candidate in the same compound class as one of ours.

Additionally, changes in applicable regulatory requirements and guidance may occur and we may need to amend clinical trial 
protocols to reflect these changes or to include additional objectives that could yield important scientific information critical to our 
overall development strategy. The protocol amendment process often requires review and approval by several review bodies, 
including regulatory agencies and scientific, regulatory and ethics boards and IRBs. These protocol amendments may not be accepted 
by the review bodies in the form submitted, or at all, which may impact costs, timing or successful completion of a clinical trial.

We may also be required to develop and implement additional clinical trial policies and procedures designed to help protect 

subjects from the COVID-19 virus which have and are expected to continue to increase the cost of our clinical trials. For example, in 
March 2020, FDA issued guidance, which the FDA subsequently updated, on conducting clinical trials during the pandemic, which 
describes a number of considerations for sponsors of clinical trials impacted by the pandemic. 

If we or our collaborators experience delays in the completion of, or termination of, any clinical trial of one of our product 
candidates, the commercial prospects of the product candidate will be harmed, could shorten the period during which we may have the 
exclusive right to commercialize our products under patent protection, and our or our collaborators’ ability to commence product sales 
and generate product revenue from the product will be delayed. In addition, any delays in completing our clinical trials will increase 
our costs and slow down our product candidate development and approval process. Any of these occurrences may harm our business, 
financial condition and prospects significantly. In addition, many of the factors that cause, or lead to, a delay in the commencement or 
completion of clinical trials may also ultimately lead to the denial of regulatory approval of our product candidates.

XEN496 targets an ultra-orphan indication of KCNQ2-DEE and the FDA has indicated that a single, small pivotal trial may be 
sufficient to demonstrate effectiveness and safety in KCNQ2-DEE provided that no new or unexpected safety issues arise during drug 
development. However, other regulatory authorities may require additional data. Further, even though we believe the safety and 
efficacy profile of ezogabine, the active ingredient in XEN496, in pediatric patients with KCNQ2-DEE generated to date by others 
appears promising based on published clinical case reports, we do not yet know if the pediatric-specific formulation of XEN496 will 
have the same or similar safety, pharmacokinetic and/or efficacy profile in pediatric patients with KCNQ2-DEE as the original 
formulation of ezogabine. If we are unable to replicate the published clinical case reports, due to the new formulation or any other 
factors, the clinical development of XEN496 may not be successful and the FDA or other regulatory authorities may require additional 
data in more patients or we may not be able to generate sufficient data for approval in this patient population.

39

Clinical trials may fail to demonstrate adequately the safety and efficacy of our or our collaborators’ product candidates, at any 
stage of clinical development. Terminating the development of any of our or our collaborators’ product candidates could materially 
harm our business and the market price of our common shares.

Our and our collaborators’ clinical product candidates, which include XEN1101, XEN496, XEN007, NBI-921352 (previously 

known as XEN901 and being developed by our collaborator Neurocrine Biosciences), and FX301 (being developed by Flexion 
Therapeutics, Inc., or Flexion), along with product candidates we expect to enter clinical development which include our pre-clinical 
compounds, are in varying stages of development and will require substantial clinical development, testing and regulatory approval 
prior to commercialization. 

Before obtaining regulatory approvals for the commercial sale of our products, we or our collaborators must demonstrate 
through lengthy, complex and expensive pre-clinical testing and clinical trials that the product candidate is both safe and effective for 
use in each target indication. Failure can occur at any time during the clinical trial process. Clinical trials often fail to demonstrate 
safety and efficacy of the product candidate studied for the target indication. Most product candidates that commence clinical trials are 
never approved as products. A number of companies in the biopharmaceutical industry have suffered significant setbacks in advanced 
clinical trials due to lack of efficacy or adverse safety profiles, notwithstanding promising results in earlier trials. In addition to the 
safety and efficacy trials of any product candidate, clinical trial failures may result from a multitude of factors including flaws in trial 
design, dose selection, statistical analysis plan, placebo effect, patient enrollment criteria, patient compliance and trial execution. Data 
obtained from trials and studies are susceptible to varying interpretations, and regulators may not interpret our data as favorably as we 
do, which may delay, limit or prevent regulatory approval. Failure of a clinical trial due to any of these reasons could materially harm 
our business and the market price of our common shares.

In the case of some of our and our collaborators’ product candidates, we and our collaborators are seeking to develop treatments 

for certain diseases for which there is relatively limited clinical experience, and clinical trials may use novel endpoints and 
measurement methodologies or subjective patient feedback, which adds a layer of complexity to these clinical trials and may delay 
regulatory approval. Negative or inconclusive results from our or our collaborators’ clinical trials could lead to a decision or 
requirement to conduct additional pre-clinical testing or clinical trials or result in a decision to terminate the continued development of 
a product candidate. For example, we anticipate receiving topline data from our X-TOLE Phase 2b clinical trial of XEN1101 in adult 
patients with focal epilepsy in the third quarter of 2021.  If these topline data fail to meet the trial endpoints or are otherwise 
inconclusive, we may cease development of XEN1101 as a treatment for adult patients with focal epilepsy or potentially abandon 
development of XEN1101 entirely. Even if the data from our X-TOLE Phase 2b clinical trial are positive, there can be no assurance 
that we will be able to successfully advance development of this product candidate into later stage clinical trials or obtain regulatory 
approval of XEN1101. Any of the foregoing outcomes would materially and adversely impact our business, product candidate 
pipeline and future prospects. 

If our or our collaborators’ product candidates are not shown to be both safe and effective in clinical trials, such product 

candidates will be unable to obtain regulatory approval or be successfully commercialized. In addition, our or our collaborators’ 
failure to demonstrate positive results in clinical trials in any indication for which we or our collaborators are developing clinical 
product candidates could adversely affect development efforts in other indications. In such case, we would need to develop other 
compounds and conduct associated pre-clinical testing and clinical trials, as well as potentially seek additional financing, all of which 
would have a material adverse effect on our business, growth prospects, operating results, financial condition and results of operations.

We or our collaborators may find it difficult to enroll patients in our clinical studies, including for ultra-orphan, orphan or 

niche indications, which could delay or prevent clinical studies of our product candidates.

We or our collaborators may not be able to identify, recruit and enroll a sufficient number of patients, or those with required or 
desired characteristics to achieve diversity in a study, to complete clinical studies in a timely manner, or at all. Patient enrollment for 
clinical trials for ultra-orphan, orphan and niche indications and for more prevalent conditions is affected by factors including:

•

•

•

•

•

•

•

•

severity of the disease under investigation;

design of the study protocol;

size of the patient population and geographic dispersion;

identification of patients; 

eligibility criteria for the study in question;

perceived risks and benefits of the product candidate under study;

proximity and availability of clinical study sites for prospective patients;

availability of competing therapies and clinical studies;

40

•

•

efforts to facilitate timely enrollment in clinical studies; and

patient referral practices of physicians.

The limited patient populations in ultra-orphan, orphan and niche indications, such as KCNQ2-DEE, SCN8A-DEE, other early 

infantile epileptic encephalopathies, as well as potential orphan indications for the future development of XEN007 including 
alternating hemiplegia of childhood, or AHC, hemiplegic migraine, or HM, and childhood absence epilepsy, or CAE, present 
significant recruitment challenges for clinical trials and a full understanding of the size of these populations is still relatively unknown. 
Many of these patients may not be suitable or available to participate in our or our collaborators’ clinical trials. This means that we or 
our collaborators will generally have to run multi-site and potentially multi-national trials, which can be expensive and require close 
coordination and supervision. If we or our collaborators’ experience delays in completing our clinical trials, such delays could result in 
increased costs, delays in advancing our product development, delays in testing the effectiveness of our product candidates or 
termination of the clinical studies altogether. Even if we or our collaborators’ are successful in receiving regulatory approval, the 
limited patient populations in ultra-orphan, orphan and niche indications may impact the successful commercialization of our or our 
collaborators’ product candidates and reimbursement rates, which could impact revenue and our ability to achieve profitability. 

If we fail to obtain or maintain orphan drug designation or other regulatory exclusivity for some of our product candidates, our 

competitive position would be harmed.

Although we have pending provisional and non-provisional patent applications related to XEN496 and XEN007, these product 
candidates are not currently covered by any issued patents and we may have to rely solely on orphan drug designation to gain market 
exclusivity for these product candidates. Currently, this designation provides market exclusivity in the U.S. and the EU for seven years 
and ten years, respectively, if a product is the first such product approved for such orphan indication. This market exclusivity does not, 
however, pertain to indications other than those for which the drug was specifically designated in the approval, nor does it prevent 
other types of drugs from receiving orphan designations or approvals in these same indications. Further, even after an orphan drug is 
approved, the FDA can subsequently approve a drug with similar chemical structure for the same condition if the FDA concludes that 
the new drug is clinically superior to the orphan product or a market shortage occurs.

In the EU, orphan exclusivity may be reduced to six years if the drug no longer satisfies the original designation criteria or can 

be lost altogether if the marketing authorization holder consents to a second orphan drug application or cannot supply enough drug, or 
when a second applicant demonstrates its drug is “clinically superior” to the original orphan drug. XEN007, a drug we are evaluating 
for potential development in CAE, HM, or AHC, has received orphan drug designation from the FDA for HM and AHC. We have also 
received orphan drug designation from the FDA and orphan medicinal product designation was granted by the European Commission 
to XEN496 as a treatment of KCNQ2-DEE. If we seek orphan drug designations for other indications or in other jurisdictions, we may 
fail to receive such orphan drug designations and, even if we succeed, such orphan drug designations may fail to result in or maintain 
orphan drug exclusivity upon approval, which would harm our competitive position. Further, not all jurisdictions, such as Canada, 
have orphan drug designations. Neither orphan drug designation, nor rare pediatric disease, or RPD, designation gives the drug any 
advantage in the regulatory review or approval process other than potential fee reductions, and in the case of RPD, priority review 
vouchers. 

Although the FDA has granted RPD designation to XEN007 for the treatment of AHC and RPD designation to NBI-921352 for 

the treatment of SCN8A-DEE, we may not be able to realize any value from such designation.

Our product candidate XEN007 has received RPD designation from the FDA for the treatment of AHC and NBI-921352, being 

developed by our collaborator Neurocrine Biosciences, has received RPD designation for the treatment of SCN8A-DEE. The FDA 
defines a "rare pediatric disease" as a disease that affects fewer than 200,000 individuals in the U.S. primarily under the age of 18 
years old. Under the FDA's RPD priority review voucher program, upon the approval of a new drug application, NDA, or a biologics 
license application, BLA, for the treatment of an RPD, the sponsor of such application would be eligible for a priority review voucher 
that can be used to obtain priority review for a subsequent NDA or BLA. There is no assurance we or Neurocrine Biosciences will 
receive a RPD priority review voucher or that use of the priority review voucher will result in a faster review or approval for a 
subsequent marketing application. It is possible that even if we or Neurocrine Biosciences obtain approval for XEN007 in AHC or 
NBI-921352 in SCN8A-DEE, respectively, and qualify for such a priority review voucher, the program may no longer be in effect at 
the time of approval of either of these product candidates. Also, although priority review vouchers may be freely sold or transferred to 
third parties, there is no guarantee that we will be able to realize any value if we were to sell a priority review voucher to a third party. 
In addition, as part of the Coronavirus Response and Relief Supplemental Consolidated Appropriations Act of 2021, Congress 
extended FDA authorization to operate the RPD Priority Review Voucher Program through fiscal year 2024. RPD Designation does 
not lead to faster development or regulatory review of the product, or increase the likelihood that it will receive marketing approval. 

41

Results of pre-clinical studies and/or earlier clinical trials may not be predictive of the results of later-stage clinical trials and 

the results of our clinical trials may not satisfy the requirements of the FDA, EMA, Health Canada or foreign regulatory 
authorities.

The results of pre-clinical studies, either generated by us, such as for XEN901 (which we licensed to Neurocrine Biosciences 
and is now known as NBI-921352) or XEN402 (which we sold to Flexion and is now known as FX301), by our CROs or by other 
third parties from which we have in-licensed or acquired a product candidate, such as for XEN1101, may not be predictive of results 
in clinical testing. Moreover, pre-clinical results can often be difficult to compare across different studies for a variety of reasons, 
including differences in experimental protocols and techniques, personnel, equipment and other factors, which may make the pre-
clinical results less reliable and predictive of clinical trial results. In addition, published clinical data or case reports from third parties 
or early clinical trial data of our product candidates may not be predictive of the results of later-stage clinical trials. Interpretation of 
results from early, usually smaller, studies that suggest a clinically meaningful response in some patients, requires caution. Results 
from later stages of clinical trials enrolling more patients may fail to show the desired safety and efficacy results or otherwise fail to be 
consistent with the results of earlier trials of the same product candidate. Later clinical trial results may not replicate earlier clinical 
trials for a variety of reasons, including differences in trial design, different trial endpoints (or lack of trial endpoints in exploratory 
studies), patient population, number of patients, patient selection criteria, trial duration, drug dosage and formulation and lack of 
statistical power in the earlier studies. These uncertainties are enhanced where the diseases under study lack established clinical 
endpoints, validated measures of efficacy, as is often the case with orphan diseases for which no drugs have been developed 
previously and where the product candidates target novel mechanisms. For example, to our knowledge, NBI-921352 is the first 
selective Nav1.6 sodium channel inhibitor being developed for the treatment of epilepsy and therefore standard pre-clinical models 
may not be predictive of clinical efficacy due to its novel molecular mechanism.  

Further, our product candidates may not be approved even if they achieve their primary endpoint in our Phase 3 clinical trials. 

The FDA, EMA, Health Canada or foreign regulatory authorities may disagree with our trial design and our interpretation of data from 
pre-clinical studies and clinical trials. In addition, any of these regulatory authorities may change its requirements for the approval of a 
product candidate even after reviewing and providing comments or advice on a protocol for a pivotal clinical trial that, if successful, 
would potentially form the basis for an application for approval by the FDA, EMA, Health Canada or another regulatory authority. 
Furthermore, any of these regulatory authorities may also approve our product candidates for a narrower indication than we request or 
may grant approval contingent on the performance of costly post-marketing clinical trials. 

Our approach to drug discovery is unproven, and we do not know whether we will be able to develop any products of 

commercial value. 

Our approach to drug discovery may not reproducibly or cost-effectively result in the discovery of product candidates and 

development of commercially viable products that safely and effectively treat human disease.

Our drug discovery efforts may initially show promise in identifying additional potential product candidates yet fail to yield 
viable product candidates for clinical development or commercialization. Such failure may occur for many reasons, including the 
following: any product candidate may, on further study, be shown to have serious or unexpected side effects or other characteristics 
that indicate it is unlikely to be safe or otherwise does not meet applicable regulatory criteria; and any product candidate may not be 
capable of being produced in commercial quantities at an acceptable cost, or at all.

If our discovery activities fail to identify novel targets for drug discovery, or such targets prove to be unsuitable for treating 

human disease, or if we are unable to develop product candidates with specificity and selectivity for such targets, we will fail to 
develop viable products. If we fail to develop and commercialize viable products, we will not achieve commercial success.

Changes in methods of product candidate manufacturing or formulation may result in additional costs or delay.

As product candidates are developed through pre-clinical to late stage clinical trials towards approval and commercialization, it 
is common that various aspects of the development program, such as manufacturing methods and formulations, are altered along the 
way in an effort to optimize products, processes and results, to extend patent protection and/or to target different populations. For 
example, XEN496 is a pediatric-specific formulation of ezogabine and we have also developed a pediatric formulation for NBI-
921352 that was included in the license to Neurocrine Biosciences. Any of these changes could cause our product candidates to 
perform differently and not provide the same drug exposure profile in children and/or cause side effects different to those observed 
with formulations previously tested in adults. Unexpected changes in the performance of a new formulation may affect the results of 
planned clinical trials or other future clinical trials conducted with the altered materials. This could delay completion of clinical trials, 
require the conduct of additional bridging clinical trials or the repetition of one or more clinical trials, increase clinical trial costs 
and/or delay or jeopardize approval of our product candidates and/or jeopardize our or our collaborators’ ability to commence product 
sales and generate revenue.

42

Even if we obtain and maintain approval for our product candidates from one jurisdiction, we may never obtain approval for 

our product candidates in other jurisdictions, which would limit our market opportunities and adversely affect our business.

Sales of our approved products, if any, will be subject to the regulatory requirements governing marketing approval in the 

countries in which we obtain regulatory approval, and we plan to seek, ourselves or with collaborators, regulatory approval to 
commercialize our product candidates in North America, the EU and in additional foreign countries. Clinical trials conducted in one 
country may not be accepted by regulatory authorities in other countries and regulatory approval in one country does not ensure 
approval in any other country, while a failure or delay in obtaining regulatory approval in one country may have a negative effect on 
the regulatory approval process in others. For example, approval in the U.S. by the FDA does not ensure approval by regulatory 
authorities in other countries or jurisdictions, and approval by one foreign regulatory authority does not ensure approval by the FDA, 
EMA, Health Canada or regulatory authorities in other countries. Approval procedures vary among jurisdictions and can be lengthy 
and expensive, and involve requirements and administrative review periods different from, and potentially greater than, those in the 
U.S., including additional pre-clinical studies or clinical trials. Even if our product candidates are approved, regulatory approval for 
any product may be withdrawn by the regulatory authorities in a particular jurisdiction.

Even if a product is approved, the FDA, EMA, Health Canada, or another applicable regulatory authority, as the case may be, 

may limit the indications for which the product may be marketed, require extensive warnings on the product labeling or require 
expensive and time-consuming post-approval commitments including clinical trials or onerous risk management activities, including 
Risk Evaluation and Mitigation Strategies, or REMS, in the United States as conditions of approval to help ensure that the benefits of 
the drug outweigh the potential risks. REMS can include medication guides, communication plans for health care professionals, and 
elements to assure safe use, or ETASU. ETASU can include, but are not limited to, special training or certification for prescribing or 
dispensing, dispensing only under certain circumstances, special monitoring, and the use of patient registries. The requirement for a 
REMS can materially affect the potential market and profitability of the drug. Moreover, product approval may require substantial 
post-approval testing and surveillance to monitor the drug’s safety or efficacy. Once granted, product approvals may be withdrawn if 
compliance with regulatory standards is not maintained or problems are identified following initial marketing. In many countries 
outside the U.S., a product candidate must be approved for reimbursement before it can be approved for sale in that country. In some 
cases, the price that we intend to charge for a product is also subject to approval.

Regulatory authorities in countries outside of the U.S., Canada and the EU also have their own requirements for approval of 
product candidates with which we must comply prior to marketing in those countries. Obtaining foreign regulatory approvals and 
compliance with such foreign regulatory requirements could result in significant delays, difficulties and costs for us or our 
collaborators and could delay or prevent the introduction of our current and any future products, in certain countries.

If we or our collaborators fail to receive applicable marketing approvals or comply with the regulatory requirements in 
international markets, our target market will be reduced and our ability to realize the full market potential of our product candidates 
will be harmed and our business will be adversely affected.

Risks Related to Commercialization

If, in the future, we are unable to establish our own sales, marketing and distribution capabilities or enter into agreements for 

these purposes, we may not be successful in independently commercializing any future products.

We do not have a sales or marketing infrastructure and, as a company, have no sales, marketing or distribution experience. Our 

strategy involves building our own commercial infrastructure to selectively commercialize future products in certain commercial 
markets which will be expensive and time consuming. For certain products and/or commercial markets, we may seek commercial 
partners and may seek to retain the right to participate in the future development and commercialization of such products if we believe 
such involvement would advance our business. 

To develop internal sales, distribution and marketing capabilities, we will have to invest significant amounts of financial and 

management resources, some of which will need to be committed prior to any confirmation that any of our product candidates will be 
approved. We have no prior experience as a company in the marketing, sale and distribution of biopharmaceutical products and there 
are significant risks involved in building and managing a commercial organization. For any future products for which we decide to 
perform sales, marketing and distribution functions ourselves, we could face a number of additional risks, including:

•

•

•

the maintenance of existing or the establishment of new supply arrangements with third-party logistics providers and 
secondary packagers;

the maintenance of existing or the establishment of new scaled production arrangements with third-party manufacturers to 
obtain finished products that are appropriately packaged for sale;

a continued acceptable safety profile following any marketing approval;

43

•

•

•

•

•

our inability to recruit and retain adequate numbers of qualified sales and marketing personnel or develop alternative sales 
channels;

the inability of our products to secure acceptance from physicians, healthcare providers, patients, third-party payors and the 
medical community including identifying an adequate number of physicians and patients, especially for ultra-orphan, 
orphan or niche indications;

the lack of complementary products to be offered by sales personnel, which may put us at a competitive disadvantage 
relative to companies with more extensive product lines;

unforeseen costs and expenses associated with creating and maintaining an independent sales and marketing organization; 
and

our ability to compete with other therapies.

Where and when appropriate, we may elect to utilize contract sales forces, distribution partners or collaborators that have sales, 
marketing and distribution capabilities to assist in the commercialization of or independently commercialize our product candidates. If 
we enter into arrangements with third parties to perform sales, marketing and distribution services for a product, the resulting revenue 
or the profitability from this revenue to us is likely to be lower than if we had sold, marketed and distributed that product ourselves. In 
addition, we may not be successful in entering into arrangements with third parties to sell, market, and distribute our product 
candidates or may be unable to do so on terms that are favorable to us. We likely will have little control over such third parties, and 
any of these third parties may fail to devote the necessary resources and attention to sell, market, and distribute our current or any 
future products effectively. 

Even if we receive regulatory approval to commercialize any of our product candidates, we will be subject to ongoing regulatory 

obligations and continued regulatory review, which may result in significant additional expense.

Any regulatory approvals that we receive for the product candidates we commercialize, alone or with a collaborator, will be 

subject to limitations on the approved indicated uses for which the product may be marketed or subject to certain conditions of 
approval and may contain requirements for potentially costly post-approval trials, including Phase 4 clinical trials, and surveillance to 
monitor the safety and efficacy of the marketed product and compliance with the approved package insert. In addition, our product 
candidates may receive schedule classifications under the Controlled Substances Act of 1970 which will result in additional 
complexity in manufacturing, supply chain, licensing, import/export and distribution.

For any approved product, we or our collaborators will need to ensure continued compliance with extensive regulations and 

requirements regarding the manufacturing processes, labeling, packaging, distribution, adverse event reporting, storage, advertising, 
promotion and recordkeeping for the product. These requirements include submissions of safety and other post-approval information 
and reports, as well as continued compliance with current good manufacturing practices, or cGMP, and current good clinical practices, 
or cGCP, for any clinical trials that we or our collaborators are required to conduct post-approval. Post-approval discovery of 
previously unknown problems with a product, including adverse events of unanticipated severity or frequency, or with third-party 
manufacturers or manufacturing processes, or failure to comply with regulatory requirements, may result in, among other things:

•

•

•

•

•

additional restrictions on the marketing or manufacturing of the product, withdrawal of the product from the market or 
voluntary or mandatory product recalls;

fines, warning letters or holds on any post-approval clinical trials;

refusal by the FDA, EMA, Health Canada or another applicable regulatory authority to approve pending applications or 
supplements to approved applications filed by us or our collaborators, or suspension or revocation of product license 
approvals;

product seizure or detention, or refusal to permit the release, import or export of products; and

injunctions or the imposition of civil or criminal penalties.

Occurrence of any of the foregoing could have a material and adverse effect on our business and results of operations. 

In addition, prescription drugs may be promoted only for the approved indications in accordance with the approved label. The 
FDA and other agencies actively enforce the laws and regulations prohibiting the promotion of off-label uses, and a company that is 
found to have improperly promoted off-label use may be subject to significant liability. However, physicians may, in their 
independent medical judgment, prescribe legally available products for off-label uses. The FDA does not regulate the behavior of 
physicians in their choice of treatments but the FDA and other foreign regulators do restrict manufacturer’s communications on the 
subject of off-label use of their products.

44

If the market opportunities for our product candidates are smaller than we believe they are, our revenue may be adversely 
affected, and our business may suffer.  Because the target patient populations for some of our product candidates are small, we 
must be able to successfully identify patients and acquire a significant market share to achieve profitability and growth.

Some of our product candidates focus on treatments for rare and ultra-rare diseases.  Given the small number of patients who 
have some of the diseases that we are targeting, our profitability and growth depend on successfully identifying patients with these 
rare and ultra-rare diseases.  Currently, most reported estimates of the prevalence of these diseases are based on studies of small 
subsets of the population in specific geographic areas, which are then extrapolated to estimate the prevalence of the diseases in the 
U.S. or elsewhere. Our projections of both the number of people who have these diseases, as well as the subset of people with these 
diseases who have the potential to benefit from treatment with our product candidates, are based on our internal estimates.  These 
estimates have been derived from a variety of sources, including scientific literature, surveys of clinics, patient foundations, and 
market research, and may prove to be incorrect.  Further, new studies may change the estimated incidence or prevalence of these 
diseases, and, as a result, the number of patients with these diseases may turn out to be lower than expected.  

Our effort to identify patients with diseases we seek to treat is in early stages, and we cannot accurately predict the number of 
patients for whom treatment might be possible.  Additionally, the potentially addressable patient population for some of our product 
candidates may be limited or may not be amenable to treatment with our product candidates, and new patients may become 
increasingly difficult to identify or gain access to, which would adversely affect our results of operations and our business.  Finally, 
even if we obtain significant market share for our product candidates focused on treatments for rare and ultra-rare diseases, because 
the potential target populations are very small, we may never achieve profitability despite obtaining such significant market share.

Even if we or our collaborators receive approval to commercialize our products, unfavorable pricing regulations and 

challenging third-party coverage and reimbursement practices could harm our business.

Our or our collaborators’ ability to commercialize any products successfully will depend, in part, on the extent to which 
coverage and reimbursement for these products and related treatments will be available from government healthcare programs, private 
health insurers, managed care plans, and other organizations. Government authorities and third-party payers, such as private health 
insurers and health maintenance organizations, decide which medications they will pay for and establish reimbursement levels. A 
primary trend in the U.S. healthcare industry is cost containment. Government authorities and third-party payers have attempted to 
control costs by limiting coverage and the amount of reimbursement for particular medications. Increasingly, third-party payers are 
requiring that drug companies provide them with predetermined discounts from list prices and are challenging the prices charged for 
medical products. We cannot be sure that coverage and reimbursement will be available for any product that we or our collaborators 
commercialize and, if reimbursement is available, the level of reimbursement. In addition, coverage and reimbursement may impact 
the demand for, or the price of, any product candidate for which we or a collaborator obtains marketing approval. If coverage and 
reimbursement are not available or reimbursement is available only to limited levels, we or our collaborators may not be able to 
successfully commercialize any product candidate for which marketing approval is obtained.

There may be significant delays in obtaining coverage and reimbursement for newly approved drugs, and coverage may be more 
limited than the purposes for which the drug is approved by the FDA, EMA, Health Canada or other regulatory authorities. Moreover, 
eligibility for coverage and reimbursement does not imply that a drug will be paid for in all cases or at a rate that covers our costs, 
including research, development, manufacture, sale and distribution expenses. Interim reimbursement levels for new drugs, if 
applicable, may also be insufficient to cover our and our collaborators’ costs and may not be made permanent. Reimbursement rates 
may vary according to the use of the drug and the clinical setting in which it is used, may be based on reimbursement levels already 
set for lower cost drugs and may be incorporated into existing payments for other services. Net prices for drugs may be reduced by 
mandatory discounts or rebates required by government healthcare programs or private payers and by any future relaxation of laws 
that presently restrict imports of drugs from countries where they may be sold at lower prices than in the U.S. Third-party payers often 
rely upon Medicare coverage policy and payment limitations in setting their own reimbursement policies. Our or our collaborators’ 
inability to promptly obtain coverage and profitable payment rates from both government-funded and private payers for any approved 
products that we or our collaborators develop could have a material adverse effect on our operating results, our ability to raise capital 
needed to commercialize products and our overall financial condition.

Some of our and our collaborators’ target patient populations in orphan and niche indications, such as KCNQ2-DEE, and 
SCN8A-DEE, and other potential target patient populations, such as CAE, are relatively small. In order for therapies that are designed 
to treat smaller patient populations to be commercially viable, the pricing, coverage and reimbursement for such therapies needs to be 
higher, on a relative basis, to account for the lack of volume. Accordingly, we will need to implement pricing, coverage and 
reimbursement strategies for any approved product that accounts for the smaller potential market size. If we are unable to establish or 
sustain coverage and adequate reimbursement for our current and any future products from third party payers or the government, the 
adoption of those products and sales revenue will be adversely affected, which, in turn, could adversely affect the ability to market or 
sell those products.

45

Recently enacted and future legislation may increase the difficulty and cost for us to commercialize any products that we or our 

collaborators develop and affect the prices we may obtain.

The U.S. and some foreign jurisdictions are considering or have enacted a number of legislative and regulatory proposals to 

change the healthcare system in ways that could affect our ability to sell any of our products profitably, once such products are 
approved for sale. Among policy makers and payers in the U.S. and elsewhere, there is significant interest in promoting changes in 
healthcare systems with the stated goals of containing healthcare costs, improving quality and/or expanding access. In the U.S., the 
pharmaceutical industry has been a particular focus of these efforts and has been significantly affected by major legislative initiatives.

For example, in 2010, the Patient Protection and Affordable Care Act, as amended by the Health Care and Education 
Reconciliation Act of 2010, collectively, the PPACA, was enacted and includes measures that have significantly changed the way 
healthcare is financed by both governmental and private insurers. Since its enactment, there have been legislative and judicial efforts 
to repeal, replace, or change some or all of the PPACA. For example, various portions of the PPACA have been the subject of legal 
and constitutional challenges, including legal proceedings in the Fifth Circuit Court of Appeals. The Supreme Court of the United 
States held oral arguments on the Fifth Circuit Court case in November 2020 and is expected to issue a decision by mid-2021. 
Litigation and legislation over the PPACA are likely to continue, with unpredictable and uncertain results. It is unclear how this 
Supreme Court decision, future litigation, and healthcare measures promulgated by the Biden administration will impact the 
implementation of the PPACA, our business, financial condition and results of operations. Complying with any new legislation or 
reversing changes implemented under the PPACA could be time-intensive and expensive, resulting in a material adverse effect on our 
business.

In addition, there has been heightened governmental scrutiny over the manner in which manufacturers set prices for their 
marketed products, which has resulted in several Congressional inquiries and proposed and enacted federal and state legislation 
designed to, among other things, bring more transparency to product pricing, review the relationship between pricing and 
manufacturer patient programs, and reform government program reimbursement methodologies for pharmaceutical products. For 
example, HHS and CMS issued final rules in November and December of 2020 that are expected to impact, among others, price 
reductions from pharmaceutical manufacturers to plan sponsors under Part D, fee arrangements between pharmacy benefit managers 
and manufacturers, prescription drug importation, manufacturer price reporting requirements under the Medicaid Drug Rebate 
Program, including regulations that affect manufacturer-sponsored patient assistance programs subject to pharmacy benefit manager 
accumulator programs and Best Price reporting related to certain value-based purchasing arrangements. Multiple lawsuits have been 
brought against the HHS challenging various aspects of these new rules. In January 2021, the Biden administration issued a 
“regulatory freeze” memorandum that directs department and agency heads to review new or pending rules of the prior administration. 
It is unclear whether these new regulations will be withdrawn or when they will become fully effective under the current 
administration. The impact of these regulations and any future healthcare measures and agency rules implemented by the Biden 
administration on us and the pharmaceutical industry as a whole is currently unknown. At the state level, legislatures have 
increasingly passed legislation and implemented regulations designed to control pharmaceutical and biological product pricing, 
including price or patient reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure 
and transparency measures, and, in some cases, designed to encourage importation from other countries and bulk purchasing. These 
and other health reform measures that are implemented may have a material adverse effect on our operations. 

We are unable to predict the future course of federal or state healthcare legislation in the United States directed at broadening 

the availability of healthcare and containing or lowering the cost of healthcare. These and any further changes in the law or regulatory 
framework could reduce our ability to generate revenue in the future or increase our costs, either of which could have a material and 
adverse effect on our business, financial condition and results of operations. It is also possible that additional governmental action will 
be taken to address the COVID-19 pandemic. The continuing efforts of the government, insurance companies, managed care 
organizations, and other payors of healthcare services and medical products to contain or reduce costs of healthcare and/or impose 
price controls may adversely affect the demand for our product candidates, if approved, and our ability to achieve or maintain 
profitability.

In the EU, similar political, economic and regulatory developments may affect our ability to profitably commercialize our 
current or any future products. In addition to continuing pressure on prices and cost containment measures, legislative developments at 
the EU or member state level may result in significant additional requirements or obstacles that may increase our operating costs. In 
international markets, reimbursement and healthcare payment systems vary significantly by country, and many countries have 
instituted price ceilings on specific products and therapies. Our future products, if any, might not be considered medically reasonable 
and necessary for a specific indication or cost-effective by third-party payers. An adequate level of reimbursement might not be 
available for such products and third-party payers’ reimbursement policies might adversely affect our or our collaborators’ ability to 
sell any future products profitably.

46

Legislative and regulatory proposals have been made to expand post-approval requirements and restrict sales and promotional 

activities for pharmaceutical products. We cannot be sure whether additional legislative changes will be enacted, or whether the FDA 
regulations, guidance or interpretations will be changed, or what the impact of such changes on the marketing approvals of our product 
candidates, if any, may be. In addition, increased scrutiny by the U.S. Congress of the FDA’s approval process may significantly delay 
or prevent marketing approval, as well as subject us to more stringent product labeling and post-approval testing and other 
requirements.

We cannot predict the likelihood, nature or extent of government regulation that may arise from future legislation or 

administrative action, either in the U.S. or in other jurisdictions. If we or our collaborators are slow or unable to adapt to changes in 
existing requirements or the adoption of new requirements or policies, or if we or our collaborators are not able to maintain regulatory 
compliance, our product candidates may lose any marketing approval that may have been obtained and we may not achieve or sustain 
profitability, which would adversely affect our business.

Foreign governments tend to impose strict price controls, which may adversely affect our future profitability.

In most foreign countries, particularly those in the EU and Canada, prescription drug pricing and/or reimbursement is subject to 

governmental control. In those countries that impose price controls, pricing negotiations with governmental authorities can take 
considerable time after the receipt of marketing approval for a product. To obtain reimbursement or pricing approval in some 
countries, we or our collaborators may be required to conduct a clinical trial that compares the cost-effectiveness of our product 
candidate to other available therapies. As of February 2021, Canada is in the midst of implementing new drug pricing regulations and 
additional pricing guidance that will affect the price at which patented medicines can be sold.

Some countries require approval of the sale price of a drug before it can be marketed. In many countries, the pricing review 

period begins after marketing or product licensing approval is granted. In some foreign markets, prescription pharmaceutical pricing 
remains subject to continuing governmental control even after initial approval is granted. As a result, we or our collaborators might 
obtain marketing approval for a product in a particular country, but then be subject to price regulations that delay commercial launch 
of the product, possibly for lengthy time periods, and negatively impact the revenue that is generated from the sale of the product in 
that country. If reimbursement of such products is unavailable or limited in scope or amount, or if pricing is set at unsatisfactory 
levels, or if there is competition from lower priced cross-border sales, our profitability will be negatively affected.

Risks Related to Our Dependence on Third Parties

Our prospects for successful development and commercialization of our partnered products and product candidates are 

dependent upon the research, development and marketing efforts of our collaborators.

We have no control over the resources, time and effort that our collaborators may devote to our programs and limited access to 

information regarding or resulting from such programs. We are dependent on our collaborators, including Neurocrine Biosciences, 
Flexion and Genentech, to fund and conduct the research and any clinical development of product candidates under our agreements 
with each of them, and for the successful regulatory approval, marketing and commercialization of one or more of such products or 
product candidates. Such success will be subject to significant uncertainty.

Our ability to recognize revenue from successful collaborations may be impaired by multiple factors including:

•

•

•

•

•

•

•

•

a collaborator may shift its priorities and resources away from our programs due to a change in business strategies, or a 
merger, acquisition, sale or downsizing of its company or business unit;

a collaborator may cease development in therapeutic areas which are the subject of our strategic alliances;

a collaborator may change the success criteria for a particular program or product candidate thereby delaying or ceasing 
development of such program or candidate;

a significant delay in initiation of certain development activities by a collaborator will also delay payment of milestones tied 
to such activities, thereby impacting our ability to fund our own activities;

a collaborator could develop a product that competes, either directly or indirectly, with our current or future products, if 
any;

a collaborator with commercialization obligations may not commit sufficient financial or human resources to the marketing, 
distribution or sale of a product;

a collaborator with manufacturing responsibilities may encounter regulatory, resource or quality issues and be unable to 
meet demand requirements;

a collaborator may exercise its rights under the agreement to terminate our collaboration;

47

•

•

•

•

a dispute may arise between us and a collaborator concerning the research or development of a product candidate, 
commercialization of a product or payment of royalties or milestone payments, any of which could result in a delay in 
milestones, royalty payments or termination of a program and possibly resulting in costly litigation or arbitration which 
may divert management attention and resources;

a collaborator may not adequately protect the intellectual property rights associated with a product or product candidate; 

a collaborator may use our proprietary information or intellectual property in such a way as to invite litigation from a third 
party; and 

disruptions caused by man-made or natural disasters or public health pandemics or epidemics or other business 
interruptions, including, for example, the COVID-19 pandemic.

If our collaborators do not perform in the manner we expect or fulfill their responsibilities in a timely manner, or at all, the 

clinical development, regulatory approval and commercialization efforts could be delayed, terminated or be commercially 
unsuccessful. Conflicts between us and our collaborators may arise. In the event of termination of one or more of our collaboration 
agreements, it may become necessary for us to assume the responsibility of any terminated product or product candidates at our own 
expense or seek new collaborators. In that event, we could be required to limit the size and scope of one or more of our independent 
programs or increase our expenditures and seek additional funding which may not be available on acceptable terms or at all, and our 
business could be materially and adversely affected.

We depend on our collaborative relationship with Neurocrine Biosciences to further develop and commercialize NBI-921352, 

and if our relationship is not successful or is terminated, we may not be able to effectively develop and/or commercialize NBI-
921352, which could have a material adverse effect on our business.

We depend on Neurocrine Biosciences to collaborate with us to develop and commercialize NBI-921352. Under the agreement 

and subject to input from the joint steering committee, Neurocrine Biosciences controls all decision-making with respect to the clinical 
development and commercialization for NBI-921352.

As a result of our collaboration with Neurocrine Biosciences, the eventual success or commercial viability of NBI-921352 is 

largely beyond our control. The financial returns to us, if any, depend in large part on the achievement of development and 
commercialization milestones, plus a share of any revenue from sales. Therefore, our success, and any associated financial returns to 
us and our investors, will depend in part on Neurocrine Biosciences’ performance under the agreement. 

We are subject to a number of additional specific risks associated with our dependence on our collaborative relationship with 

Neurocrine Biosciences, including:

•

adverse decisions by Neurocrine Biosciences regarding the development and commercialization of NBI-921352;
• Neurocrine Biosciences’ failure to collect all data required by FDA to support regulatory approval or an IND or any 

amendments thereof, address any deficiencies or compliance issues raised by FDA or any other regulatory authority, or 
comply with all regulatory requirements in order to advance clinical development of NBI-921352 to approval;

•

•

•

•

possible disagreements as to the timing, nature and extent of development plans, including clinical trials or regulatory 
strategy;

loss of significant rights if we fail to meet our obligations under the agreement;

changes in key management personnel at Neurocrine Biosciences, including in members of the joint steering committee; 
and

possible disagreements with Neurocrine Biosciences regarding the agreement, for example, with regard to ownership of 
intellectual property rights.

48

For example, following Neurocrine Biosciences’ submission of the IND for NBI-921352, the FDA requested additional non-

clinical data to support dose justification in the proposed pediatric study of NBI-921352 in pediatric SCN8A-DEE patients.  Based on 
this feedback, in January 2021, we announced that Neurocrine Biosciences intends to initiate a Phase 2 clinical trial in adolescent 
patients (aged 12 years and older) with SCN8A-DEE in the third quarter of 2021 and to amend the trial protocol to include younger 
pediatric patients (aged 2-11 years) with SCN8A-DEE following the FDA’s review and approval of the additional non-clinical 
information. In connection with this announcement, we and Neurocrine Biosciences amended our collaboration agreement to 
restructure the terms of potential payments owed to us upon achievement of certain development milestones, including deferring the 
milestone payment owing to us for the SCN8A-DEE trial until the FDA has approved the protocol amendment to include younger 
pediatric patients (aged 2-11 years).  The terms of our amended collaboration agreement with Neurocrine Biosciences are described in 
greater detail in the section of this report titled “Business — Collaborations, Commercial and License Agreements — License and 
Collaboration Agreement with Neurocrine Biosciences, Inc.” If Neurocrine Biosciences does not provide the FDA with sufficient 
additional non-clinical data to support a protocol amendment, we would not qualify for the milestone tied to the SCN8A-DEE 
development program.  In addition, although we have previously announced that Neurocrine Biosciences is advancing clinical plans to 
develop NBI-921352 for the treatment of adult focal epilepsy and expects to initiate a Phase 2 clinical trial in 2021, we cannot be 
certain that Neurocrine Biosciences will continue to pursue this indication and we may not qualify for additional payments under our 
collaboration agreement. 

If either we or Neurocrine Biosciences fail to perform our respective obligations, any clinical trial, regulatory approval or 
development progress could be significantly delayed or halted, could result in costly or time-consuming litigation or arbitration and 
could have a material adverse effect on our business.

Decisions by Neurocrine Biosciences to emphasize other drug candidates currently in its portfolio ahead of our product 
candidates, or to add competitive agents to its portfolio could result in a decision to terminate the agreement, in which event, among 
other things, we may be responsible for paying any remaining costs of all ongoing or future clinical trials, including expending 
additional time and resources needed to address any prior deficiencies or regulatory noncompliance issues that we may inherit from 
Neurocrine Biosciences upon any such termination.

Any of the above discussed scenarios could adversely affect the timing and extent of the development and commercialization 

activities related to NBI-921352, which could materially and adversely impact our business.

We may not be successful in establishing new collaborations or maintaining our existing alliances, which could adversely affect 

our ability to develop product candidates and commercialize products.

In the ordinary course, we engage with other biotechnology and pharmaceutical companies to discuss potential in-licensing, out-
licensing, alliances and other strategic transactions. We may seek to enter into these types of transactions to enhance and accelerate the 
development of our current or future product candidates and the commercialization of any resulting products. We face significant 
competition in seeking appropriate collaborators and the negotiation process is time-consuming and complex. Moreover, we may not 
be successful in our efforts to establish other collaborations or other alternative arrangements for any current or future product 
candidates because our research and development pipeline may be insufficient, our current or future product candidates may be 
deemed to be at too early of a stage of development for collaboration effort and/or third parties may view our product candidates as 
lacking the requisite potential to demonstrate safety and efficacy. Even if we are successful in our efforts to establish collaborations, 
the terms that we agree upon may not be favorable to us and we may not be able to maintain such collaborations if, for example, 
development or approval of a product candidate is delayed or sales of an approved product are disappointing.

If any of our existing collaboration agreements are terminated, or if we determine that entering into other product collaborations 

is in our best interest but we either fail to enter into, delay in entering into or fail to maintain such collaborations:

•

•

the development of certain of our current or future product candidates may be terminated or delayed;

our cash expenditures related to development of any such product candidates would increase significantly and we may need 
to seek additional financing sooner than expected;

• we may be required to hire additional employees or otherwise develop expertise, such as clinical, regulatory, sales and 

marketing expertise, some of which we do not currently have;

• we will bear all of the risk related to the development of any such product candidates; and
•

the competitiveness of any product that is commercialized could be reduced.

49

We intend to rely on third-party manufacturers to produce our clinical product candidates and commercial supplies. Any failure 

by a third-party manufacturer to produce acceptable supplies for us may delay or impair our ability to initiate or complete our 
clinical trials, gain regulatory approvals or commercialize approved products.

We do not currently own or operate any manufacturing facilities nor do we have significant in-house manufacturing experience 

or personnel. We rely on our collaborators, either directly or through CMOs, to manufacture product candidates licensed to them or 
work with multiple CMOs to produce sufficient quantities of materials required for the manufacture of our product candidates for pre-
clinical testing and clinical trials and intend to do so for the commercial manufacture of our products. If we or our collaborators are 
unable to arrange for such third-party manufacturing sources, or fail to do so on commercially reasonable terms, we or our 
collaborators may not be able to successfully produce sufficient supply of a product candidate or we or our collaborators may be 
delayed in doing so. Such failure or substantial delay could materially harm our business.

Reliance on third-party manufacturers entails risks to which we would not be subject if we manufactured product candidates 

ourselves, including reliance on the third party for regulatory compliance and quality control and assurance, volume production, the 
possibility of breach of the manufacturing agreement by the third party because of factors beyond our control (including a failure to 
synthesize and manufacture our product candidates in accordance with our product specifications) and the possibility of termination or 
nonrenewal of the agreement by the third party at a time that is costly or damaging to us. In addition, the FDA, EMA, Health Canada 
and other regulatory authorities require that our product candidates be manufactured according to cGMP and similar foreign standards. 
Pharmaceutical manufacturers and their subcontractors are required to register their facilities and/or products manufactured at the time 
of submission of the marketing application and then annually thereafter with the FDA, EMA, Health Canada and other regulatory 
agencies. They are also subject to pre-approval inspections and periodic unannounced inspections by the FDA, EMA, Health Canada 
and other regulatory agencies. Any subsequent discovery of problems with a product, or a manufacturing or laboratory facility used by 
us or our collaborators, may result in restrictions on the product or on the manufacturing or laboratory facility, including product 
recall, suspension of manufacturing, product seizure or a voluntary withdrawal of the drug from the market. Any failure by our or our 
collaborators’ third-party manufacturers to comply with cGMP or any failure to deliver sufficient quantities of product candidates in a 
timely manner, could lead to a delay in, or failure to obtain, regulatory approval of any of our product candidates.

We rely on third parties to conduct our pre-clinical studies and clinical trials. If these third parties do not successfully carry out 

their contractual duties including to comply with applicable laws and regulations or meet expected deadlines, our business could 
be substantially harmed.

We rely on entities outside of our control, which may include academic institutions, CROs, hospitals, clinics and other third-
party collaborators, to monitor, support, conduct and/or oversee pre-clinical and clinical studies of our current and future product 
candidates. As a result, we have less control over the timing and cost of these studies and the ability to recruit trial subjects than if we 
conducted these trials with our own personnel. For example, XEN007 is currently being evaluated under a physician-led, Phase 2 
proof-of-concept study as an adjunctive treatment in pediatric patients diagnosed with treatment-resistant CAE. In addition, we expect 
to initiate a Phase 2 proof-of-concept clinical trial this year examining XEN1101 in major depressive disorder and anhedonia in 
partnership with academic collaborators at the Icahn School of Medicine at Mount Sinai. 

If we are unable to maintain or enter into agreements with these third parties on acceptable terms, or if any such engagement is 

terminated prematurely, we may be unable to enroll patients on a timely basis or otherwise conduct our trials in the manner we 
anticipate. In addition, there is no guarantee that these third parties will devote adequate time and resources to our studies or perform 
as required by our contract or in accordance with regulatory requirements, including maintenance of clinical trial information 
regarding our product candidates. If these third parties fail to meet expected deadlines, fail to transfer to us any regulatory information 
in a timely manner, fail to adhere to protocols or fail to act in accordance with regulatory requirements or our agreements with them, 
or if they otherwise perform in a substandard manner or in a way that compromises the quality or accuracy of their activities or the 
data they obtain, then clinical trials of our future product candidates may be extended or delayed with additional costs incurred, or our 
data may be rejected by the FDA, EMA, Health Canada or other regulatory agencies.

Ultimately, we are responsible for ensuring that each of our clinical trials is conducted in accordance with the applicable 

protocol, legal, regulatory and scientific standards, and our reliance on third parties does not relieve us of our regulatory 
responsibilities.

50

We, our CROs and CMOs are required to comply with current good laboratory practices, or cGLP, cGCP and cGMP regulations 

and guidelines enforced by the FDA, Health Canada, the competent authorities of the member states of the European Economic Area 
and comparable foreign regulatory authorities for products in clinical development. Regulatory authorities enforce these regulations 
through periodic inspections of clinical trial sponsors, principal investigators, clinical trial sites, manufacturing facilities, nonclinical 
testing facilities and other contractors. If we or any of our CROs or CMOs fail to comply with these applicable regulations, the clinical 
data generated in our nonclinical studies and clinical trials may be deemed unreliable and our submission of marketing applications 
may be delayed or the FDA, EMA, Health Canada or another regulatory authority may require us to perform additional clinical trials 
before approving our marketing applications. Upon inspection, the FDA, EMA, Health Canada or another regulatory authority could 
determine that any of our clinical trials fail or have failed to comply with applicable cGCP regulations. In addition, our clinical trials 
must be conducted with product produced under the cGMP regulations enforced by the FDA, EMA, Health Canada and other 
regulatory authorities, and our clinical trials may require a large number of test subjects. Our failure to comply with cGLP, cGCP and 
cGMP regulations may require us to repeat clinical trials or manufacture additional batches of drug which would delay the regulatory 
approval process and increase our costs. Moreover, our business may be implicated if any of our CROs or CMOs violates federal or 
state fraud and abuse or false claims laws and regulations or healthcare privacy and security laws.

If any of our clinical trial sites terminates for any reason, we may experience the loss of follow-up information on patients 

enrolled in our ongoing clinical trials unless we are able to transfer the care of those patients to another qualified clinical trial site. 
Further, if our relationship with any of our CROs or CMOs is terminated, we may be unable to enter into arrangements with 
alternative CROs or CMOs on commercially reasonable terms, or at all.

Switching or adding CROs, CMOs or other suppliers can involve substantial cost and require extensive management time and 
focus. In addition, there is a natural transition period when a new CRO, CMO or supplier commences work. As a result, delays may 
occur, which can materially impact our ability to meet our desired clinical development timelines. If we are required to seek 
alternative supply arrangements, the resulting delays and potential inability to find a suitable replacement could materially and 
adversely impact our business.

We work with outside scientists and their institutions in executing our business strategy of developing product candidates. These 
scientists may have other commitments or conflicts of interest, which could limit our access to their expertise and harm our ability 
to develop viable product candidates.

We work with scientific advisors and collaborators at academic institutions and other research institutions. These scientists and 

collaborators are not our employees; rather, they serve as either independent contractors or the primary investigators under research 
collaboration agreements that we have with their sponsoring academic or research institution. Such scientists and collaborators may 
have other commitments that would limit their availability to us. Although our scientific advisors generally agree not to do competing 
work, if an actual or potential conflict of interest between their work for us and their work for another entity arises, we may lose their 
services. It is also possible that some of our valuable proprietary knowledge may become publicly known through these scientific 
advisors if they breach their confidentiality agreements with us, which would cause competitive harm to our business.

Risks Related to Intellectual Property

We could be unsuccessful in obtaining or maintaining adequate patent protection for one or more of our products or product 

candidates.

Our commercial success will depend, in large part, on our ability to obtain and maintain patent and other intellectual property 

protection with respect to our product candidates. We evaluate our global patent portfolio in the ordinary course of business to 
enhance patent protection in areas of our strategic focus and in key markets for our potential products and may abandon existing 
patents or patent applications related to terminated development programs, areas, or markets of low strategic importance. Patents 
might not be issued or granted with respect to our patent applications that are currently pending, and issued or granted patents might 
later be found to be invalid or unenforceable, be interpreted in a manner that does not adequately protect our current product or any 
future products, or fail to otherwise provide us with any competitive advantage. The patent position of biotechnology and 
pharmaceutical companies is generally uncertain because it involves complex legal and factual considerations. The standards applied 
by the U.S. Patent and Trademark Office, or USPTO, and foreign patent offices in granting patents are not always applied uniformly 
or predictably. For example, there is no uniform worldwide policy regarding patentable subject matter or the scope of claims 
allowable in biotechnology and pharmaceutical patents. Consequently, patents may not issue from our pending patent applications, or 
we may end up with patent claims of different scope in different jurisdictions. As such, we do not know the degree of future protection 
that we will have on our proprietary products and technology, if any, and a failure to obtain adequate intellectual property protection 
with respect to our product candidates and proprietary technology could have a material adverse impact on our business.

51

Periodic maintenance fees, renewal fees, annuity fees and various other governmental fees on patents and/or applications will be 

due to be paid to the USPTO and various governmental patent agencies outside of the U.S. in several stages over the lifetime of the 
patents and/or applications. The USPTO and various non-US governmental patent agencies require compliance with a number of 
procedural, documentary, fee payment and other similar provisions during the patent application and maintenance process. We employ 
reputable law firms and other professionals to help us comply with respect to the patents and patent applications that we own, and we 
rely upon our licensors or our other collaborators to effect compliance with respect to the patents and patent applications that we 
license. In some cases, an inadvertent lapse can be cured by payment of a late fee or by other means in accordance with the applicable 
rules. However, there are situations in which noncompliance can result in abandonment or lapse of the patent or patent application, 
resulting in partial or complete loss of patent rights in the relevant jurisdiction. In such an event, our competitors might be able to 
enter the market and this circumstance would have a material adverse effect on our business.

Our intellectual property rights will not necessarily provide us with competitive advantages.

The degree of future protection afforded by our intellectual property rights is uncertain because intellectual property rights have 

limitations, and may not adequately protect our business, or may not permit us to maintain our competitive advantage.

The following examples are illustrative:

•

•

•

others may be able to make compounds that are similar to our product candidates but that are not covered by the claims of 
the patents that we or our collaborators own or have exclusively licensed;

others may independently develop similar or alternative technologies without infringing our intellectual property rights;

issued patents that we own or have exclusively licensed may not provide us with any competitive advantages, or may be 
held invalid or unenforceable, as a result of legal challenges by our competitors;

• we may obtain patents for certain compounds many years before we obtain marketing approval for products containing such 
compounds, and because patents have a limited life, which may begin to run out prior to the commercial sale of the related 
product, the commercial value of our patents may be limited;

•

our competitors might conduct research and development activities in countries where we do not have patent rights and then 
use the information learned from such activities to develop competitive products for sale in our major commercial markets;

• we may fail to develop additional proprietary technologies that are patentable;
•

the laws of certain foreign countries may not protect our intellectual property rights to the same extent as the laws of the 
U.S., or we may fail to apply for or obtain adequate intellectual property protection in all the jurisdictions in which we 
operate; and

•

the patents of others may have an adverse effect on our business, for example by preventing us from marketing one or more 
of our product candidates for one or more indications.

Any of the aforementioned threats to our competitive advantage could have a material adverse effect on our business.

We may not be able to protect our intellectual property rights throughout the world.

Filing, prosecuting, enforcing and defending patents on product candidates in all countries throughout the world would be 
prohibitively expensive, and our intellectual property rights in some countries outside the U.S. can be less extensive than those in the 
U.S. In addition, the laws of some foreign countries do not protect intellectual property rights to the same extent as federal and state 
laws in the U.S. Consequently, we may not be able to prevent third parties from practicing our inventions in all countries outside the 
U.S., or from offering to sell, selling, using, making or importing products made using our inventions in and into the U.S. or other 
jurisdictions. Competitors may use our technologies in jurisdictions where we have not obtained patent protection to develop their 
own products and further, may export otherwise infringing products to territories where we have patent protection, but enforcement is 
not as strong as that in the U.S. These products may compete with our current or future products, if any, and our patents or other 
intellectual property rights may not be effective or sufficient to prevent them from competing.

52

Many companies have encountered significant problems in protecting and defending intellectual property rights in foreign 
jurisdictions. The legal systems of certain countries, particularly certain developing countries, do not favor the enforcement of patents, 
trade secrets and other intellectual property protection, particularly those relating to biotechnology products, which could make it 
difficult for us to stop the infringement of our patents or marketing of competing products in violation of our proprietary rights 
generally. Proceedings to enforce our patent rights in foreign jurisdictions could result in substantial costs and divert our efforts and 
attention from other aspects of our business, could put our patents at risk of being invalidated or interpreted narrowly and our patent 
applications at risk of not issuing and could provoke third parties to assert claims against us. We may not prevail in any lawsuits that 
we initiate and the damages or other remedies awarded, if any, may not be commercially meaningful. Accordingly, our efforts to 
enforce our intellectual property rights around the world may be inadequate to obtain a significant commercial advantage from the 
intellectual property that we develop or license. 

Our patents covering one or more of our products or product candidates could be found invalid or unenforceable if challenged.

Any of our intellectual property rights could be challenged or invalidated despite measures we take to obtain patent and other 

intellectual property protection with respect to our product candidates and proprietary technology. For example, if we were to initiate 
legal proceedings against a third party to enforce a patent covering one of our product candidates, the defendant could counterclaim 
that our patent is invalid and/or unenforceable. In patent litigation in the U.S. and in some other jurisdictions, defendant counterclaims 
alleging invalidity and/or unenforceability are commonplace. Grounds for a validity challenge could be an alleged failure to meet any 
of several statutory requirements, for example, lack of novelty, obviousness, broken priority, lack of written description, insufficient 
or non-enablement. Grounds for an unenforceability assertion could be an allegation that someone connected with prosecution of the 
patent withheld material information from the USPTO or the applicable foreign counterpart, or made a misleading statement, during 
prosecution. A litigant or the USPTO itself could challenge our patents on this basis even if we believe that we have conducted our 
patent prosecution in accordance with the duty of candor and in good faith. The outcome following such a challenge is unpredictable.

With respect to challenges to the validity of our patents, for example, there might be invalidating prior art, of which we and the 

patent examiner were unaware during prosecution. If a defendant were to prevail on a legal assertion of invalidity and/or 
unenforceability, we would lose at least part, and perhaps all, of the patent protection on a product candidate. Even if a defendant does 
not prevail on a legal assertion of invalidity and/or unenforceability, our patent claims may be construed in a manner that would limit 
our ability to enforce such claims against the defendant and others. The cost of defending such a challenge, particularly in a foreign 
jurisdiction, and any resulting loss of patent protection could have a material adverse impact on one or more of our product candidates 
and our business.

Enforcing our intellectual property rights against third parties may also cause such third parties to file other counterclaims 

against us, which could be costly to defend, particularly in a foreign jurisdiction, and could require us to pay substantial damages, 
cease the sale of certain products or enter into a license agreement and pay royalties (which may not be possible on commercially 
reasonable terms, or at all). Any efforts to enforce our intellectual property rights are also likely to be costly and may divert the efforts 
of our scientific and management personnel.

Patent protection and patent prosecution for some of our product candidates is dependent on, and the ability to assert patents 

and defend them against claims of invalidity is maintained by, third parties.

There have been and may be times in the future when certain patents that relate to our product candidates or any approved 

products are controlled by our licensees, sublicensees, licensors or other collaborators. Although we may, under such arrangements, 
have rights to consult with our collaborators on actions taken as well as back-up rights of prosecution and enforcement, we have in the 
past and may in the future relinquish rights to prosecute and maintain patents and patent applications within our portfolio as well as 
the ability to assert such patents against infringers. For example, currently the rights relating to the patent portfolio for XEN901 (now 
known as NBI-921352), other selective Nav1.6 inhibitors and dual Nav1.2/1.6 inhibitors are exclusively licensed to Neurocrine 
Biosciences, some of the rights relating to the patent portfolio for novel Nav1.7 inhibitors are held by Genentech and the rights to the 
patent portfolio for XEN402 (now known as FX301) were sold to Flexion. 

If any current or future licensee, sublicensee, licensor or other collaborators with rights to prosecute, assert or defend patents 

related to our product candidates fails to appropriately prosecute and maintain patent protection for patents covering any of our 
product candidates, or if patents covering any of our product candidates are asserted against infringers or defended against claims of 
invalidity or unenforceability in a manner which adversely affects such coverage, our ability to develop and commercialize any such 
product candidate may be adversely affected and we may not be able to prevent competitors from making, using, importing, offering 
for sale, and/or selling competing products.

53

We may be involved in lawsuits to protect or enforce our patents or the patents of our licensors, which could be expensive, time 

consuming and unsuccessful.

Competitors may infringe our patents or the patents of our licensors. To counter infringement or unauthorized use, we may be 

required to file infringement claims, which can be expensive and time-consuming. In addition, in an infringement proceeding, a court 
may decide that a patent of ours or one of our licensors is not valid or is unenforceable or may refuse to stop the other party in such 
infringement proceeding from using the technology at issue on the grounds that our patents do not cover the technology in question. 
An adverse result in any litigation or defense proceedings could put one or more of our patents at risk of being invalidated, held 
unenforceable or interpreted narrowly, and could put any of our patent applications at risk of not yielding an issued patent.

Interference proceedings, derivation proceedings, entitlement proceedings, ex parte reexamination, inter partes review, post-

grant review, and opposition proceedings provoked by third parties or brought by the USPTO or any foreign patent authority may be 
used to challenge inventorship, ownership, claim scope, or validity of our patent applications. An unfavorable outcome could require 
us to cease using the related technology or to attempt to license rights to it from the prevailing party. Our business could be harmed if 
the prevailing party does not offer us a license on commercially reasonable terms, if any license is offered at all. Litigation or 
interference proceedings may fail and, even if successful, may result in substantial costs and distract our management and other 
employees.

We may not be able to prevent, alone or with our licensors, misappropriation of our trade secrets or confidential information, 
particularly in countries where the laws may not protect those rights as fully as in the U.S. Furthermore, because of the substantial 
amount of discovery required in connection with intellectual property litigation, there is a risk that some of our confidential 
information could be compromised by disclosure during this type of litigation. In addition, there could be public announcements of the 
results of hearings, motions or other interim proceedings or developments. If securities analysts or investors perceive these results to 
be negative, it could have a substantial adverse effect on the market price of our common shares.

Claims that our product candidates or the sale, offer for sale, importation, manufacture, or use of our future products infringe 
the patent or other intellectual property rights of third parties could result in costly litigation or could require substantial time and 
money to resolve, even if litigation is avoided.

Our commercial success depends upon our ability to develop product candidates and commercialize products that may be 
approved in the future, using our proprietary technology without infringing the intellectual property rights of others. Our product or 
product candidates or any uses of them may now and in the future infringe third-party patents or other intellectual property rights. 
Third parties might allege that we or our collaborators are infringing their patent rights or that we have misappropriated their trade 
secrets, or that we are otherwise violating their intellectual property rights, whether with respect to the manner in which we have 
conducted our research or to the composition, use or manufacture of the compounds we have developed or are developing with our 
collaborators. Such third parties might resort to litigation against us or other parties we have agreed to indemnify, which litigation 
could be based on either existing intellectual property or intellectual property that arises in the future.

It is possible that relevant patents or patent applications held by third parties will cover our product candidates at the time of 

launch and we may also fail to identify, relevant patents or patent applications held by third parties that cover our product candidates. 
For example, U.S. applications filed before November 29, 2000, and certain applications filed after that date that will not be filed 
outside the U.S. remain confidential until patents issue. Other patent applications in the U.S. and several other jurisdictions are 
published approximately 18 months after the earliest filing for which priority is claimed, with such earliest filing date being commonly 
referred to as the priority date. Furthermore, publication of discoveries in the scientific or patent literature often lags behind actual 
discoveries. Therefore, we cannot be certain that we or our collaborators were the first to invent, or the first to file patent applications 
on our product candidates or for their uses, or that our product candidates will not infringe patents that are currently issued or that will 
be issued in the future. In the event that a third party has also filed a patent application covering one of our product candidates or a 
similar invention, we may have to participate in an adversarial proceeding, known as an interference or derivation proceeding, 
declared by the USPTO or its foreign counterpart to determine priority of invention. Additionally, pending patent applications and 
patents which have been published can, subject to certain limitations, be later amended in a manner that could cover our current or 
future products, if any, or their use.

54

Defending against claims of patent infringement, misappropriation of trade secrets or other violations of intellectual property 
rights could be costly and time consuming, regardless of the outcome. Thus, even if we were to ultimately prevail, or to settle at an 
early stage, such litigation could burden us with substantial unanticipated costs. In addition, litigation or threatened litigation could 
result in significant demands on the time and attention of our management team, distracting them from the pursuit of other company 
business. Claims that our product candidates or the selling, using, making, offering to sell, or importing, of our future products 
infringe, misappropriate or otherwise violate third-party intellectual property rights could therefore have a material adverse impact on 
our business.

Most of our competitors are larger than we are and have substantially greater financial resources. They are, therefore, likely to 
be able to sustain the costs of complex intellectual property litigation longer than we could. In addition, the uncertainties associated 
with litigation could have a material adverse effect on our ability to raise the funds necessary to conduct our clinical trials, continue 
our internal research programs, in-license needed technology, or enter into strategic collaborations that would help us bring our 
product candidates to market.

In addition, any future intellectual property litigation, interference or other administrative proceedings will result in additional 
expense and distraction of our personnel. An adverse outcome in such litigation or proceedings may expose us or any future strategic 
collaborators to loss of our proprietary position, expose us to significant liabilities, or require us to seek licenses that may not be 
available on commercially acceptable terms, if at all, each of which could have a material adverse effect on our business.

Unfavorable outcomes in intellectual property litigation could limit our research and development activities and/or our ability to 

commercialize certain products.

If third parties successfully assert their intellectual property rights against us, we might be barred from using certain aspects of 
our technology or barred from developing and commercializing certain products. Prohibitions against using certain technologies, or 
prohibitions against commercializing certain products, could be imposed by a court or by a settlement agreement between us and a 
plaintiff. In addition, if we are unsuccessful in defending against allegations that we have infringed, misappropriated or otherwise 
violated patent or other intellectual property rights of others, we may be forced to pay substantial damage awards to the plaintiff. 
There is inevitable uncertainty in intellectual property litigation, and we could lose, even if the case against us is weak or flawed. If 
litigation leads to an outcome unfavorable to us, we may be required to obtain a license from the intellectual property owner in order 
to continue our research and development programs or to market any resulting product. It is possible that the necessary license will not 
be available to us on commercially acceptable terms, or at all. Alternatively, we may be required to modify or redesign our current or 
future products, if any, in order to avoid infringing or otherwise violating third-party intellectual property rights. This may not be 
technically or commercially feasible, may render those products less competitive, or may delay or prevent the entry of those products 
to the market. Any of the foregoing could limit our research and development activities, our ability to commercialize one or more 
product candidates, or both.

In order to avoid or settle potential claims with respect to any patent or other intellectual property rights of third parties, we may 

choose or be required to seek a license from a third party and be required to pay license fees or royalties or both, which could be 
substantial. These licenses may not be available on acceptable terms, or at all. Even if we or any future collaborators were able to 
obtain a license, the rights may be nonexclusive, which could result in our competitors gaining access to the same intellectual 
property. Ultimately, we could be prevented from commercializing a product, or be forced, by court order or otherwise, to cease some 
or all aspects of our business operations, if, as a result of actual or threatened patent or other intellectual property claims, we are 
unable to enter into licenses on acceptable terms. Further, we could be found liable for significant monetary damages as a result of 
claims of intellectual property infringement. In the future, we may receive offers to license and demands to license from third parties 
claiming that we are infringing their intellectual property or owe license fees and, even if such claims are without merit, we could fail 
to successfully avoid or settle such claims.

If Neurocrine Biosciences, Flexion, Genentech or other collaborators license or otherwise acquire rights to intellectual property 
controlled by a third party in various circumstances, for example, where a product could not be legally developed or commercialized 
in a country without the third-party intellectual property right or, where it is decided that it would be useful to acquire such third-party 
right to develop or commercialize the product, they are eligible under our collaboration agreements to decrease payments payable to 
us on a product-by-product basis and, in certain cases, on a country-by-country basis. Any of the foregoing events could harm our 
business significantly.

55

If we breach any of the agreements under which we license the use, development and commercialization rights to our product 

candidates or technology from third parties, we could lose license rights that are important to our business.

Under our existing license and other agreements, including those associated with the XEN007 program, we are subject to 
various obligations, including diligence obligations such as development and commercialization obligations, as well as potential 
milestone payments and other obligations. If we fail to comply with any of these obligations or otherwise breach our license 
agreements, our licensing partners may have the right to terminate the applicable license in whole or in part, or convert an exclusive 
license to a non-exclusive license. Generally, the loss of any one of our current licenses, or license exclusivity, or any other license we 
may acquire in the future, could materially harm our business, prospects, financial condition and results of operations.

Confidentiality agreements with employees and third parties may not prevent unauthorized disclosure of trade secrets and other 

proprietary information, which would harm our competitive position.

In addition to patents, we rely on trade secrets, technical know-how and proprietary information concerning our discovery 

platform, business strategy and product candidates in order to protect our competitive position, which are difficult to protect. In the 
course of our research and development activities and our business activities, we often rely on confidentiality agreements to protect 
our proprietary information. Such confidentiality agreements are used, for example, when we talk to vendors of laboratory, 
manufacturing, pre-clinical development or clinical development goods or services or potential strategic collaborators. In addition, 
each of our employees and consultants is required to sign a confidentiality agreement and invention assignment agreement upon 
joining our company. Our employees, consultants, contractors, business partners or outside scientific collaborators might intentionally 
or inadvertently disclose our trade secret information in breach of these confidentiality agreements or our trade secrets may otherwise 
be misappropriated. Our collaborators might also have rights to publish data and we might fail to apply for patent protection prior to 
such publication. It is possible that a competitor will make use of such information, and that our competitive position will be 
compromised. In addition, to the extent that our employees, consultants or contractors use intellectual property owned by others in 
their work for us, disputes may arise as to the rights in related or resulting know-how and inventions. Enforcing a claim that a third 
party illegally obtained and is using any of our trade secrets is expensive and time consuming, and the outcome is unpredictable. In 
addition, courts outside the U.S. sometimes are less willing than U.S. courts to protect trade secrets. Moreover, our competitors may 
independently develop equivalent knowledge, methods and know-how. If we cannot maintain the confidentiality of our proprietary 
technology and other confidential information, then our ability to obtain patent protection or to protect our trade secret information 
would be jeopardized, which would adversely affect our competitive position.

Recent court decisions could increase the uncertainties and costs surrounding the prosecution of our patent applications and 

the enforcement or defense of our issued patents.

The patent positions of pharmaceutical and biopharmaceutical companies can be highly uncertain and involve complex legal and 
factual questions for which important legal principles remain unresolved. No consistent policy regarding the breadth of claims allowed 
in patents in these fields has emerged to date in the U.S. There have been recent changes regarding how patent laws are interpreted, 
and both the U.S. Patent and Trademark Office, or USPTO, and Congress have recently made significant changes to the patent system. 
There have been U.S. Supreme Court decisions that now show a trend of the Supreme Court which is distinctly negative on some 
patents. The trend of these decisions along with resulting changes in patentability requirements being implemented by the USPTO 
could make it increasingly difficult for us to obtain and maintain patents on our products. We cannot accurately predict future changes 
in the interpretation of patent laws or changes to patent laws which might be enacted into law. Those changes may materially affect 
our patents, our ability to obtain patents, the costs to prosecute our patent applications and enforce our patents and/or the patents and 
applications of our collaborators. The patent situation in these fields outside the U.S. also has uncertainties. Changes in either the 
patent laws or in interpretations of patent laws in the U.S. and other countries may diminish the value of our intellectual property or 
narrow the scope of our patent protection. Accordingly, we cannot predict the breadth of claims that may be allowed or enforced in the 
patents we own or to which we have a license or third-party patents.

If we do not obtain protection under the Hatch-Waxman Act in the U.S. and similar legislation outside of the U.S. by extending 

the patent terms for our product candidates, our business may be materially harmed.

Depending upon the timing, duration and specifics of FDA marketing approval of our product candidates, if any, one or more 

U.S. patents may be eligible for limited patent term restoration under the Hatch-Waxman Act. The Hatch-Waxman Act permits a 
patent restoration term of up to five years as compensation for patent term lost during clinical testing of the product and the 
subsequent FDA regulatory review process. However, we may not be granted an extension because of, for example, failing to apply 
within applicable deadlines, failing to apply prior to expiration of relevant patents or otherwise failing to satisfy applicable 
requirements. Moreover, the applicable time period or the scope of patent protection afforded could be less than five years, or even 
less than we request if that number is less than five years.

56

If we are unable to obtain patent term extension or restoration or the term of any such extension is less than we request, the 

period during which we will have the right to exclusively market our product may be shortened and our competitors may obtain 
approval of competing products following our patent expiration, and our revenue could be reduced, possibly materially.

We have not registered our corporate name as a trademark in all of our potential markets, and failure to secure those 

registrations could adversely affect our business.

Our corporate name, Xenon, has not been trademarked in each market where we operate and plan to operate. Our trademark 
applications for our corporate name or the name of our products may not be allowed for registration, and our registered trademarks 
may not be maintained or enforced. During trademark registration proceedings, we may receive rejections, which we may be unable to 
overcome in our responses. Third parties may also attempt to register trademarks utilizing the Xenon name on their products, and we 
may not be successful in preventing such usage. In addition, in the USPTO and in comparable agencies in many foreign jurisdictions, 
third parties are given an opportunity to oppose pending trademark applications and to seek to cancel registered trademarks. 
Opposition or cancellation proceedings may be filed against our trademarks, and our trademarks may not survive such proceedings. If 
we do not secure registrations for our trademarks, we may encounter more difficulty in enforcing them against third parties than we 
otherwise would.

Intellectual property litigation may lead to unfavorable publicity that harms our reputation and causes the market price of our 

common shares to decline.

During the course of any intellectual property litigation, there could be public announcements of the initiation of the litigation as 
well as results of hearings, rulings on motions, and other interim proceedings in the litigation. If securities analysts or investors regard 
these announcements as negative, the perceived value of our existing products, programs or intellectual property could be diminished. 
Accordingly, the market price of our common shares may decline. Such announcements could also harm our reputation or the market 
for our future products, which could have a material adverse effect on our business.

Risks Related to Ownership of Our Common Shares

The market price of our common shares may be volatile, and purchasers of our common shares could incur substantial losses. 

The market price of our common shares has fluctuated in the past and is likely to be volatile in the future.  As a result of this 

volatility, investors may experience losses on their investment in our common shares.  The market price for our common shares may 
be influenced by many factors, including the following:

•

•

•

•

•

•

•

•

•

•

•

•

•

•

announcements by us or our competitors of new products, product candidates or new uses for existing products, significant 
contracts, commercial relationships or capital commitments and the timing of these introductions or announcements;

actions by any of our collaborators regarding our product candidates they are developing, including announcements 
regarding clinical or regulatory decisions or developments of our collaboration;

unanticipated serious safety concerns related to the use of any of our products and product candidates;

negative or inconclusive results from clinical trials of our product candidates, leading to a decision or requirement to 
conduct additional pre-clinical testing or clinical trials or resulting in a decision to terminate the continued development of a 
product candidate;

delays of clinical trials of our product candidates;

failure to obtain or delays in obtaining or maintaining product approvals or clearances from regulatory authorities;

adverse regulatory or reimbursement announcements;

announcements by us or our competitors of significant acquisitions, strategic collaborations, licenses, joint ventures or 
capital commitments;

the results of our efforts to discover or develop additional product candidates;

our dependence on third parties, including our collaborators, CROs, clinical trial sponsors and clinical investigators;

regulatory or legal developments in Canada, the U.S. or other countries;

developments or disputes concerning patent applications, issued patents or other proprietary rights;

the recruitment or departure of key scientific or management personnel;

our ability to successfully commercialize our future product candidates we develop independently, if approved;

57

•

•

•

•

•

•

•

•

•

•

•

the level of expenses related to any of our product candidates or clinical development programs;

actual or anticipated changes in estimates as to financial results, development timelines or recommendations by securities 
analysts;

actual or anticipated quarterly variations in our financial results or those of our competitors;

any change to the composition of our board of directors or key personnel;

sales of common shares by us or our shareholders in the future, as well as the overall trading volume of our common shares;

failure to comply with covenants or make required payments under loan agreements; 

changes in the structure of healthcare payment systems;

commencement of, or our involvement in, litigation;

the impact of the COVID-19 pandemic on our business and the macroeconomic environment;

general economic, industry and market conditions in the pharmaceutical and biotechnology sectors and other factors that 
may be unrelated to our operating performance or the operating performance of our competitors, including changes in 
market valuations of similar companies; and

the other factors described in this “Risk Factors” section.

In addition, the stock market in general, and Nasdaq and the biopharmaceutical industry in particular, have from time to time 

experienced volatility that often has been unrelated to the operating performance of the underlying companies. The COVID-19 
pandemic, for example, has resulted in significant volatility. These broad market and industry fluctuations may adversely affect the 
market price of our common shares, regardless of our operating performance. In several recent situations where the market price of a 
stock has been volatile, holders of that stock have instituted securities class action litigation against the company that issued the stock. 
If any of our shareholders were to bring a lawsuit against us, the defense and disposition of the lawsuit could be costly and divert the 
time and attention of our management and harm our operating results.

Future sales of our common shares in the public market could cause the market price of our common shares to fall.

The market price of our common shares could decline as a result of sales of a large number of our common shares or the 
perception that these sales could occur.  These sales, or the possibility that these sales may occur, also might make it more difficult for 
us to sell equity securities in the future at a time and at a price that we deem appropriate.

In addition, in the future, we may issue additional common shares, preferred shares, or other equity or debt securities convertible 

into common shares in connection with a financing, collaboration agreement, acquisition, litigation settlement, employee 
arrangements or otherwise.  Any such issuance, including any issuances pursuant to our “at-the-market” equity offering program 
under our August 2020 sales agreement with Jefferies and Stifel, could result in substantial dilution to our existing shareholders and 
could cause the market price of our common shares to decline. 

Provisions in our corporate charter documents and Canadian law could make an acquisition of us, which may be beneficial to 

our shareholders, more difficult and may prevent attempts by our shareholders to replace or remove our current management 
and/or limit the market price of our common shares. 

Provisions in our articles and our by-laws, as well as certain provisions under the Canada Business Corporations Act, or CBCA, 

and applicable Canadian securities laws, may discourage, delay or prevent a merger, acquisition, tender offer or other change in 
control of us that shareholders may consider favorable, including transactions in which they might otherwise receive a premium for 
their common shares.  These provisions could also limit the price that investors might be willing to pay in the future for our common 
shares, thereby depressing the market price of our common shares.  In addition, because our board of directors is responsible for 
appointing the members of our management team, these provisions may frustrate or prevent any attempts by our shareholders to 
replace or remove our current management by making it more difficult for shareholders to replace members of our board of directors.  
Among other things, these provisions include the following:

•

•

shareholders cannot amend our articles unless such amendment is approved by shareholders holding at least two-thirds of 
the shares entitled to vote on such approval; 

shareholders must give advance notice to nominate directors or to submit proposals for consideration at shareholders’ 
meetings; and

58

•

applicable Canadian securities laws generally require, subject to certain exceptions, a tender offer to remain open for 105 
days and that more than 50% of the outstanding securities not owned by the offeror be tendered before the offeror may take 
up the securities.

Any provision in our articles, by-laws, under the CBCA or under any applicable Canadian securities law that has the effect of 

delaying or deterring a change in control could limit the opportunity for our shareholders to receive a premium for their common 
shares, and could also affect the price that some investors are willing to pay for our common shares.

U.S. civil liabilities may not be enforceable against us, our directors, or our officers.

We are governed by the CBCA and our principal place of business is in Canada.  Many of our directors and officers reside 
outside of the U.S., and all or a substantial portion of their assets as well as all or a substantial portion of our assets are located outside 
the U.S.  As a result, it may be difficult for investors to effect service of process within the U.S. upon us and certain of our directors 
and officers or to enforce judgments obtained against us or such persons, in U.S. courts, in any action, including actions predicated 
upon the civil liability provisions of U.S. federal securities laws or any other laws of the U.S.  Additionally, rights predicated solely 
upon civil liability provisions of U.S. federal securities laws or any other laws of the U.S. may not be enforceable in original actions, 
or actions to enforce judgments obtained in U.S. courts, brought in Canadian courts, including courts in the Province of British 
Columbia.

We are governed by the corporate and securities laws of Canada which in some cases have a different effect on shareholders 

than the corporate laws of Delaware, U.S. and U.S. securities laws.

We are governed by the CBCA and other relevant laws, which may affect the rights of shareholders differently than those of a 

company governed by the laws of a U.S. jurisdiction, and may, together with our charter documents, have the effect of delaying, 
deferring or discouraging another party from acquiring control of our company by means of a tender offer, a proxy contest or 
otherwise, or may affect the price an acquiring party would be willing to offer in such an instance. The material differences between 
the CBCA and Delaware General Corporation Law, or DGCL, that may have the greatest such effect include, but are not limited to, 
the following: (i) for material corporate transactions (such as mergers and amalgamations, other extraordinary corporate transactions 
or amendments to our articles) the CBCA generally requires a two-thirds majority vote by shareholders, whereas DGCL generally 
only requires a majority vote; and (ii) under the CBCA holders of 5% or more of our shares that carry the right to vote at a meeting of 
shareholders can requisition a special meeting of shareholders, whereas such right does not exist under the DGCL.

We are a smaller reporting company, and any decision on our part to comply only with certain reduced reporting and disclosure 

requirements applicable to such companies could make our common shares less attractive to investors.

We are a “smaller reporting company,” as defined under the Securities Exchange Act of 1934, as amended, or the Exchange 
Act. For as long as we continue to be a smaller reporting company, we may choose to take advantage of exemptions from various 
reporting requirements applicable to other public companies that are not smaller reporting companies, including, but not limited to, 
two years of audited financial statements in our annual reports. 

We will remain a smaller reporting company so long as, as of June 30 of the preceding year, (i) the market value of our common 

shares held by non-affiliates, or our public float, is less than $250 million; or (ii) we have annual revenues less than $100 million and 
either we have no public float or our public float is less than $700 million. 

Investors could find our common shares less attractive if we choose to rely on these disclosure exemptions. If some investors 

find our common shares less attractive as a result of any choices to reduce future disclosure, there may be a less active trading market 
for our common shares and the market price of our common shares may be more volatile. 

59

Future sales and issuances of our common shares, preferred shares, or rights to purchase common shares, including warrants 

or pursuant to our equity incentive plans, could cause shareholders to incur dilution and could cause the market price of our 
common shares to fall.

As of December 31, 2020, stock options to purchase 4,758,997 of our common shares with a weighted-average exercise price of 

$9.10 per common share were outstanding, a warrant to purchase 40,000 of our common shares with a weighted-average exercise 
price of $9.79 per common share was outstanding, and 1,016,000 of our Series 1 Preferred Shares were outstanding, which are 
convertible into our common shares on a one-for-one basis at the option of the holder, subject to certain ownership limitations 
following a requested conversion. The exercise of any of these stock options or warrant or conversion of the remaining Series 1 
Preferred Shares would result in dilution to current common shareholders. Further, because we anticipate the need to raise additional 
capital to fund our clinical development programs, we may in the future sell substantial amounts of common shares, preferred shares, 
or other securities convertible into or exchangeable for common shares. Pursuant to our equity incentive plans, our compensation 
committee (or a subset or delegate thereof) is authorized to grant equity-based incentive awards to our employees, directors and 
consultants. Future stock option grants and issuances of common shares under our share-based compensation plans may have an 
adverse effect on the market price of our common shares. 

Any future issuances of common shares, preferred shares, or securities such as warrants, notes, or preferred shares that are 

convertible into, exercisable or exchangeable for, our common shares, would have a dilutive effect on the voting and economic 
interests of our existing shareholders.

We are at risk of securities class action litigation.

In the past, securities class action litigation has often been brought against a company following a decline in the market price of 

its securities.  This risk is especially relevant for us because biotechnology companies have experienced significant share price 
volatility in recent years.  If we face such litigation, it could result in substantial costs and a diversion of management’s attention and 
resources, which could harm our business. In addition, an increase in litigation against biotechnology companies may make it more 
difficult and more expensive for us to obtain director and officer liability insurance, and we may be required to accept reduced policy 
limits and coverage or incur substantially higher costs to obtain the same or similar coverage.

Our management team has broad discretion as to the use of the net proceeds from public and private equity and debt financings 

and the investment of these proceeds may not yield a favorable return. We may invest the proceeds in ways with which our 
shareholders disagree.

We have broad discretion in the application of any net proceeds we have received or may receive pursuant to our August 2020 

“at-the-market” equity offering program with Jefferies and Stifel, any net proceeds we have received pursuant to our January 2020 
public offering of common shares, our November 2019 “at-the-market” equity offering program with Jefferies and Stifel, our sale of 
common shares to Neurocrine Biosciences in December 2019, as well as the net proceeds to us from previous equity and debt 
financings. Shareholders may not agree with our decisions, and our use of the proceeds and our existing cash and cash equivalents and 
marketable securities may not improve our results of operation or enhance the value of our common shares. Our failure to apply these 
funds effectively could have a material adverse effect on our business, delay the development of our product candidates and cause the 
market price of our common shares to decline. In addition, until the net proceeds are used, they may be placed in investments that do 
not produce significant income or that may lose value.

We do not anticipate paying any cash dividends on our common shares in the foreseeable future.

We do not currently intend to pay any cash dividends on our common shares in the foreseeable future.  We currently intend to 
retain all of our future earnings, if any, to finance the growth and development of our business.  In addition, the terms of any future 
debt agreements may preclude us from paying dividends.  As a result, capital appreciation, if any, of our common shares may be 
investors’ sole source of gain for the foreseeable future.

60

General Risk Factors 

Unstable market and economic conditions may have serious adverse consequences on our business and financial condition.

Global credit and financial markets have at times experienced extreme disruptions, including most recently in connection with 

the novel coronavirus, or COVID-19 pandemic, characterized by increased market volatility, declines in consumer confidence, 
declines in economic growth, increases in unemployment rates, and uncertainty about economic stability. If another such disruption in 
credit and financial markets and deterioration of confidence in economic conditions occurs, our business may be adversely affected. If 
the equity and credit markets were to deteriorate significantly in the future, it may make any necessary equity or debt financing more 
difficult to complete, more costly, and more dilutive. Failure to secure any necessary financing in a timely manner and on favorable 
terms could have a material adverse effect on our growth strategy, financial performance and the market price of our common shares 
could require us to delay or abandon development or commercialization plans. In addition, there is a risk that one or more of our 
current collaborators, service providers, manufacturers and other partners would not survive or be able to meet their commitments to 
us under such circumstances, which could directly affect our ability to attain our operating goals on schedule and on budget.

If we fail to maintain an effective system of internal control over financial reporting, we may not be able to accurately report 
our financial results or prevent fraud.  As a result, shareholders could lose confidence in our financial and other public reporting, 
which would harm our business and the market price of our common shares.

Effective internal control over financial reporting is necessary for us to provide reliable financial reports and, together with 

adequate disclosure controls and procedures, are designed to prevent fraud. Any failure to implement required new or improved 
controls, or difficulties encountered in their implementation could cause us to fail to meet our reporting obligations. 

We are required to disclose changes made in our internal controls and procedures on a quarterly basis and our management is 
required to assess the effectiveness of these controls annually. We may also be required to obtain an independent assessment of the 
effectiveness of our internal controls which could detect problems that our management’s assessment might not. Going forward, even 
if our management concludes that our internal control over financial reporting is effective, our independent registered public 
accounting firm may conclude that there are material weaknesses or significant deficiencies with respect to our internal controls or the 
level at which our internal controls are documented, designed, implemented or reviewed. If we or our independent registered public 
accounting firm identifies deficiencies in our internal control over financial reporting that are deemed to be material weaknesses or 
that may require prospective or retroactive changes to our financial statements, investors may lose confidence in our reported financial 
information, which could cause the market price of our common shares to decline and we could be subject to sanctions or 
investigations by the SEC or other regulatory authorities, which would require additional financial and management resources. 
Irrespective of compliance with Section 404, any failure of our internal control over financial reporting could have a material adverse 
effect on our stated operating results and harm our reputation. 

Environmental, social and governance matters may impact our business and reputation. 

Companies are increasingly being judged by their performance on a variety of environmental, social and governance, or ESG, 

matters, which are considered to contribute to the long-term sustainability of companies’ performance. 

A variety of organizations measure the performance of companies on such ESG topics, and the results of these assessments are 

widely publicized. In addition, investment in funds that specialize in companies that perform well in such assessments are increasingly 
popular, and major institutional investors have publicly emphasized the importance of such ESG measures to their investment 
decisions. Topics taken into account in such assessments include, among others, the role of the company’s board of directors in 
supervising various ESG issues and board diversity.

In light of investors’ increased focus on ESG matters, there can be no certainty that we will manage such issues successfully, or 

that we will successfully meet expectations as to our proper role. Any failure or perceived failure by us in this regard could have a 
material adverse effect on our reputation and on our business, share price, financial condition, or results of operations, including the 
sustainability of our business over time.  

If securities or industry analysts do not publish research reports about our business, or if they issue an adverse opinion about 

our business, the market price of our common shares and the trading volume of our common shares could decline.

The trading market for our common shares is influenced by the research and reports that securities or industry analysts publish 
about us or our business.  If too few securities or industry analysts cover our company, the market price of our common shares would 
likely be negatively impacted.  If securities and industry analysts who cover us downgrade our common shares or publish inaccurate 
or unfavorable research about our business, the market price of our common shares would likely decline.  If one or more of these 
analysts cease coverage of our company or fail to publish reports on us regularly, demand for our common shares could decrease, 
which might cause the market price of our common shares and the trading volume of our common shares to decline.

61

An active trading market for our common shares may not be maintained.

Our common shares are currently traded on Nasdaq, but we can provide no assurance that we will be able to maintain an active 
trading market on Nasdaq or any other exchange in the future. If an active market for our common shares is not maintained, it may be 
difficult for our shareholders to sell the common shares they have purchased without depressing the market price for the common 
shares or at all. Further, an inactive market may also impair our ability to raise capital by selling additional common shares and may 
impair our ability to enter into strategic collaborations or acquire companies or products by using our common shares as consideration.

Nasdaq may delist our securities from its exchange, which could limit investors’ ability to make transactions in our securities 

and subject us to additional trading restrictions.

Our common shares are listed on Nasdaq under the trading symbol “XENE.” Our securities may fail to meet the continued 

listing requirements to be listed on Nasdaq. If Nasdaq delists our common shares from trading on its exchange, we could face 
significant material adverse consequences, including:

•

•

•

•

•

significant impairment of the liquidity for our common shares, which may substantially decrease the market price of our 
common shares;

a limited availability of market quotations for our securities;

a determination that our common shares qualify as a “penny stock” which will require brokers trading in our common 
shares to adhere to more stringent rules and possibly resulting in a reduced level of trading activity in the secondary trading 
market for our common shares;

a limited amount of news and analyst coverage for our company; and

a decreased ability to issue additional securities or obtain additional financing in the future.

Item 1B.  Unresolved Staff Comments

None.

Item 2.

Properties

Our headquarters are located in Burnaby, British Columbia, where we occupy approximately 51,404 square feet of office and 

laboratory space. The term of the lease expires in June 2022. We currently pay an aggregate of approximately $113,689 per month in 
base rent, property tax, common area maintenance fees and management fees, and the landlord holds a security deposit equal to 
approximately $70,685.

We believe that our existing facilities are adequate to meet our business requirements for the near-term and that additional space 

will be available on commercially reasonable terms, if required. 

Item 3.

Legal Proceedings

From time to time, we may become involved in legal proceedings or be subject to claims arising in the ordinary course of our 

business. We are not presently a party to any legal proceedings that, in the opinion of our management, would reasonably be expected 
to have a material adverse effect on our business, financial condition, operating results or cash flows if determined adversely to us. 
Regardless of the outcome, litigation can have an adverse impact on us because of defense and settlement costs, diversion of 
management resources and other factors.

Item 4.

Mine Safety Disclosures

Not applicable.

62

PART II

Item 5.

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

Market Information

Our common shares have been traded on the Nasdaq Global Market since November 5, 2014 under the symbol “XENE.” On 

February 26, 2021, the last reported sale price of our common shares was $18.68 per share.

Holders

As of February 26, 2021, there were approximately 142 holders of record of our common shares. The actual number of 
shareholders is greater than this number of record holders and includes shareholders who are beneficial owners but whose common 
shares are held in street name by brokers and other nominees.

Dividends 

We have never declared or paid any cash dividends on our common shares or any other securities. We currently anticipate that 
we will retain all available funds and any future earnings, if any, in the foreseeable future for use in the operation of our business and 
do not currently anticipate paying cash dividends in the foreseeable future. Payment of future cash dividends, if any, will be at the 
discretion of the board of directors, subject to applicable law and will depend on various factors, including our financial condition, 
operating results, current and anticipated cash needs, the requirements of current or then-existing debt instruments and other factors 
the board of directors deems relevant.

Canadian withholding tax at a rate of 25% (subject to reduction under the provisions of any applicable income tax treaty or 
convention to which Canada is a signatory) will be payable on the gross amount of a dividend on our common shares paid or credited, 
or deemed to be paid or credited, to a holder of our common shares who, for purposes of the Income Tax Act (Canada), is not (and is 
not deemed to be) resident in Canada, or a Non-Resident of Canada Holder. The Canadian withholding tax will be deducted directly 
by us or our paying agent from the amount of the dividend otherwise payable and remitted to the Receiver General of Canada. The 
rate of withholding tax applicable to a dividend paid on our common shares to a Non-Resident of Canada Holder who is a resident of 
the U.S. for purposes of the Canada-U.S. Tax Convention (1980), or the Convention, is the beneficial owner of the dividend and 
qualifies for the full benefits of the Convention will generally be reduced to 15% or, if such a Non-Resident of Canada Holder is a 
company that owns (or, for purposes of the Convention, is considered to own) at least 10% of our voting shares, to 5%. Not all persons 
who are residents of the U.S. for purposes of the Convention will qualify for the benefits of the Convention. A Non-Resident of 
Canada Holder who is a resident of the U.S. is advised to consult his or her tax advisor in this regard. The rate of withholding tax on 
dividends is also reduced under other bilateral income tax treaties to which Canada is a signatory. 

Securities Authorized for Issuance under Equity Compensation Plans

The information concerning our equity compensation plans is incorporated by reference herein to our Proxy Statement for the  
2021 Annual Meeting of Shareholders to be filed with the SEC within 120 days after the end of our fiscal year ended December 31, 
2020.

Performance Graph

As a smaller reporting company, we are not required to provide the information requested by this item pursuant to Item 201(e) 

of Regulation S-K.

Recent Sales of Unregistered Securities

None.

Issuer Repurchases of Equity Securities

None.

63

Item 6.

Selected Financial Data

As a smaller reporting company, we are not required to provide the information requested by this item pursuant to Item 301 of 

Regulation S-K.

64

Item 7.

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

You should read the following discussion and analysis together with our consolidated financial statements and notes included 
elsewhere in this Annual Report. The following discussion contains forward-looking statements that involve risks and uncertainties. 
Our actual results could differ from those expressed or implied in any forward-looking statements as a result of various factors, 
including those set forth under the caption Part I, Item 1A — “Risk Factors.” Throughout this discussion, unless the context specifies 
or implies otherwise, the terms “Xenon,” “we,” “us,” and “our” refer to Xenon Pharmaceuticals Inc. and its subsidiary. 

Overview

We are a clinical stage biopharmaceutical company committed to developing innovative therapeutics to improve the lives of 
patients with neurological disorders. We are advancing a novel product pipeline of neurology-focused therapies to address areas of 
high unmet medical need, with a focus on epilepsy. 

Proprietary Programs
• XEN1101 is a differentiated Kv7 potassium channel modulator being developed for the treatment of epilepsy and 

potentially other neurological disorders. Designed as a randomized, double-blind, placebo-controlled, multicenter study, the 
“X-TOLE” study is an ongoing Phase 2b clinical trial to evaluate the clinical efficacy, safety, and tolerability of XEN1101 
administered as adjunctive treatment in approximately 300 adult patients with focal epilepsy. The primary endpoint is the 
median percent change in monthly focal seizure frequency from baseline compared to treatment period of active versus 
placebo. We anticipate that patient randomization will be completed in the first half of 2021, with topline data anticipated in 
the third quarter of 2021, dependent upon ongoing patient enrollment rates. At ASENT 2021, the virtual annual meeting of 
the American Society for Experimental Neurotherapeutics, we presented new pre-clinical data combining XEN1101 with 
commercially approved anti-seizure medications, or ASMs – including lacosamide, levetiracetam, cenobamate, phenytoin, 
and valproic acid – showing that combining sub-efficacious doses of XEN1101 and other ASMs provided robust efficacy in 
animal models. This pre-clinical work suggests that XEN1101 may be well suited for use as a monotherapy or applied in a 
rational polypharmacy setting to treat seizures. Additional pre-clinical data were presented that support the potential benefit 
of XEN1101 to treat depression and anhedonia. We expect to support the initiation of a Phase 2 proof-of-concept clinical 
trial in 2021 with academic collaborators at the Icahn School of Medicine at Mount Sinai examining XEN1101 in major 
depressive disorder and anhedonia.

• XEN496, a Kv7 potassium channel modulator, is a proprietary pediatric formulation of the active ingredient ezogabine 

being developed for the treatment of KCNQ2 developmental and epileptic encephalopathy, or KCNQ2-DEE. We received 
Fast Track designation and Orphan Drug Designation for XEN496 for the treatment of seizures associated with KCNQ2-
DEE from the U.S. Food and Drug Administration, or FDA, as well as orphan medicinal product designation from the 
European Commission. We initiated a Phase 3 randomized, double-blind, placebo-controlled, parallel group, multicenter 
clinical trial, called the “EPIK” study, evaluating the efficacy, safety, and tolerability of XEN496 administered as 
adjunctive treatment in approximately 40 pediatric patients aged one month to less than 6 years with KCNQ2-DEE.  
• XEN007 (active ingredient flunarizine) is a CNS-acting Cav2.1 and T-type calcium channel modulator that is being studied 
in treatment-resistant childhood absence epilepsy, or CAE, and potentially other neurological disorders. A physician-led, 
Phase 2 proof-of-concept study is ongoing to examine the potential clinical efficacy, safety, and tolerability of XEN007 as 
an adjunctive treatment in pediatric patients diagnosed with treatment-resistant CAE. A presentation of promising interim 
data collected from a small number of patients was presented at the virtual annual meeting of the American Epilepsy 
Society in December 2020. Given the impact of COVID-19 on recruitment, we continue to work with our collaborator to 
expand the study to include additional sites and expect that topline results from a larger data set will now be available in the 
second half of 2021. We expect to make a decision in 2021 regarding the future development of XEN007 in CAE. 

65

Partnered Programs
• We have an ongoing collaboration with Neurocrine Biosciences, Inc., or Neurocrine Biosciences, to develop treatments for 

epilepsy. Neurocrine Biosciences has an exclusive license to XEN901, now known as NBI-921352, a clinical stage 
selective Nav1.6 sodium channel inhibitor with potential in SCN8A developmental and epileptic encephalopathy, or 
SCN8A-DEE, and other forms of epilepsy. The FDA has provided feedback on an Investigational New Drug, or IND, 
application submitted by Neurocrine Biosciences in support of a Phase 2 clinical trial in SCN8A-DEE patients. Based on 
this feedback, Neurocrine Biosciences anticipates initiating a Phase 2 clinical trial in adolescent patients (aged 12 years and 
older) with SCN8A-DEE in the third quarter of 2021, and the trial protocol will be amended to include younger pediatric 
patients (aged 2-11 years) with SCN8A-DEE as soon as the FDA has reviewed and approved additional non-clinical 
information. In parallel, Neurocrine Biosciences is advancing clinical plans to develop NBI-921352 for the treatment of 
adult focal epilepsy and expects to initiate a Phase 2 clinical trial in 2021. Upon IND or equivalent regulatory acceptance 
for NBI-921352 in adult focal epilepsy, we are eligible to receive a $10.0 million milestone payment; upon FDA acceptance 
of a protocol amendment for NBI-921352 in pediatric patients (aged 2-11 years) with SCN8A-DEE, we are eligible to 
receive a $25.0 million milestone payment, or a $15.0 million milestone payment if the IND acceptance for adult focal 
epilepsy occurs first. Both milestone payments are in the form of 45% cash and a 55% equity investment in our common 
shares at a 15% premium to our 30-day trailing volume weighted average price at that time. 

•

Flexion Therapeutics, Inc., or Flexion, acquired the global rights to develop and commercialize XEN402, a Nav1.7 inhibitor 
also known as funapide. Flexion’s FX301 consists of XEN402 formulated for extended release from a thermosensitive 
hydrogel. The initial development of FX301 is intended to support administration as a peripheral nerve block for control of 
post-operative pain. In February 2021, the FDA cleared an IND for FX301, resulting in a $1.0 million milestone payment 
due to us, and Flexion anticipates initiating a Phase 1b proof-of-concept clinical trial of popliteal fossa block with FX301 in 
patients undergoing bunionectomy in the first half of 2021. Topline results from that trial could potentially be available in 
late 2021. Pursuant to the terms of the agreement, we are eligible to receive up to an additional $7.0 million in milestone 
payments through initiation of a Phase 2 clinical trial.

We have funded our operations through the sale of equity securities, funding received from our licensees and collaborators, debt 
financing and, to a lesser extent, government funding. For the year ended December 31, 2020, we recognized revenue of $32.2 million 
compared to $6.8 million for the year ended December 31, 2019, in connection with our agreements with Flexion and Neurocrine 
Biosciences. We had a net loss of $28.8 million for the year ended December 31, 2020 and an accumulated deficit of $278.5 million as 
of December 31, 2020, from expenses incurred in connection with our research programs and from general and administrative costs 
associated with our operations.

We do not generate any royalty revenue from product sales, and do not otherwise anticipate generating revenue from product 

sales for the foreseeable future, if ever. We expect that our revenue in the near term will be substantially dependent on our 
collaboration agreements. Given the uncertain nature of clinical development of our current and future product candidates and the 
commercialization of current and future products, we cannot predict when or whether we will receive further milestone payments 
under our current or future collaboration agreements or whether we will be able to report either revenue or net income in future years.

We expect to continue to incur significant expenses and operating losses for at least the next 12 to 24 months. We anticipate that 

our expenses will increase as we:

•

•

continue our research and pre-clinical and clinical development of our product candidates either from our internal research 
efforts or through acquiring or in-licensing other product candidates or technologies;

seek regulatory and marketing approvals for any of our product candidates that successfully complete clinical trials;

• make milestone and other payments under our in-license or other agreements;
• maintain, protect and expand our intellectual property portfolio;
•

attract, hire and retain skilled personnel; and

•

create additional infrastructure to support our operations and otherwise.

Recent Developments 

In January 2021, we entered into an amendment with Neurocrine Biosciences to our license and collaboration agreement 

originally entered into on December 2, 2019 pursuant to which we revised certain investigational new drug application acceptance 
criteria relating to Neurocrine Biociences’ NBI-921352 product candidate for the potential treatment of SCN8A-DEE. For additional 
information, please see the section of this report titled “Business — Collaborations, Commercial and License Agreements — License 
and Collaboration Agreement with Neurocrine Biosciences, Inc.”

66

Financial Operations Overview

Revenue 

To date, our revenue has been primarily derived from collaboration and licensing agreements as well as, to a lesser extent, 
government funding. We do not generate any royalty revenue from product sales, and do not otherwise anticipate generating revenue 
from product sales for the foreseeable future, if ever. Over our history, we have entered into several collaboration agreements and our 
current collaboration and licensing agreements are described in “Business — Collaborations, Commercial and License Agreements” 
and “Note 13” of the consolidated financial statements included elsewhere in this Annual Report on Form 10-K.

The following table is a summary of revenue recognized from our current collaboration and licensing agreements for the years 

ended December 31, 2020 and 2019 (in thousands):

Neurocrine Biosciences:
    Recognition of the transaction price
    Research and development services
Flexion:
    Recognition of the transaction price
    Milestone payment
Total collaboration revenue

Year Ended December 31,

2020

2019

$

$

26,810  $
5,356   

—   
—   
32,166  $

2,881 
448 

3,000 
500 
6,829  

  Pursuant to the terms of our license and collaboration agreement with Neurocrine Biosciences, we received an upfront cash 
payment of $30.0 million and a $20.0 million equity investment in our common shares. The equity investment was measured at fair 
value on the date of issuance and the resulting premium, together with the upfront cash payment, is the transaction price of the 
arrangement for allocation to the performance obligations. The allocation was based on the relative estimated standalone selling prices 
of each obligation under the agreement including: (i) an exclusive license to XEN901 (now known as NBI-921352) with associated 
technology and know-how transfer, (ii) an exclusive license to pre-clinical compounds for development, XEN393, XPC’535 and 
XPC’391, collectively referred to as the development track candidates, or the DTCs, with associated know-how transfer, and (iii) 
development services under the initial development program for the DTCs. In the year ended December 31, 2020, we recognized 
$26.8 million of the transaction price allocated to performance obligations (i), (ii) and (iii), compared to $2.9 million for the year 
ended December 31, 2019. Performance obligations (i) and (ii) were delivered and transferred concurrently and completed as of 
December 31, 2020. Performance obligation (iii) is being recognized over eight quarters starting from Q1 2020, which is the expected 
period to complete the development services. Research and development services are recognized into revenue at fair market value as 
the services are rendered.

In the year ended December 31, 2019, we recognized revenue of $3.5 million in connection with our agreement with Flexion for 

the global rights to develop and commercialize XEN402 (now known as FX301) which included a $3.0 million upfront payment as 
well as a $0.5 million milestone for the initiation of the first GLP toxicology study.

As our other internal and partnered products are in various stages of clinical and pre-clinical development, we do not expect to 
generate any revenue from product sales for at least the next several years. We expect that any revenue for the next several years will 
be derived from milestone payments and research and development funding under our current collaboration agreements and any 
additional collaboration agreements that we may enter into in the future. We cannot provide any assurance as to the extent or timing of 
future milestone payments or royalty payments or that we will receive any future payments at all.

We expect that any revenue we generate will fluctuate quarter to quarter as a function of the timing and amount of milestones 

and other payments from our existing collaborations and any future collaborations.

As of December 31, 2020, we have recorded $3.6 million of deferred revenue from upfront payments received under our license 

and collaboration agreement with Neurocrine Biosciences.

Operating Expenses

The following table summarizes our operating expenses for the years ended December 31, 2020 and 2019 (in thousands):

Research and development
General and administrative
Total operating expenses

Year Ended December 31,
2020

2019

  $

  $

50,523 
12,944 
63,467 

 $

 $

38,845 
10,803 
49,648 

67

 
 
 
 
 
   
   
  
 
 
    
  
 
 
 
 
 
 
 
   
   
 
   
  
 
 
Research and Development Expenses

Research and development expenses represent costs incurred to conduct research and development of our proprietary product 

candidates, including any acquired or in-licensed product candidates or technology, and costs to support our partnered product 
candidates.

Research and development expenses consist of costs incurred in performing research and development activities, including 
salary, related benefits and stock-based compensation for employees engaged in scientific research and development, third-party 
contract costs relating to research, formulation, process development and manufacturing, pre-clinical studies and clinical trial 
activities, third-party acquisition, license and collaboration fees, laboratory consumables and allocated facility-related and information 
technology costs.

Project-specific expenses reflect costs directly attributable to our clinical development candidates for which we have incurred 

significant expenses. All remaining research and development expenses are reflected in pre-clinical, discovery and other internal 
program expenses. At any given time, we have several active early-stage research and drug discovery programs. Our personnel and 
infrastructure are typically deployed over multiple projects and are not directly linked to any individual internal early-stage research or 
drug discovery program. Therefore, we do not maintain financial information for our internal early-stage research and internal drug 
discovery programs on a project-specific basis.

We expense all research and development costs as incurred. We expect that our research and development expenses will 

increase in the future as we advance our proprietary product candidates through clinical development, advance our internal drug 
discovery programs into pre-clinical development and continue our early-stage research. The increase in expense will likely include 
added personnel and third-party contracts related to research, formulation, process development and manufacturing, pre-clinical 
studies and clinical trial activities as well as third-party acquisition, license and collaboration fees and laboratory consumables.

Clinical development timelines, likelihood of regulatory approval, and commercialization and associated costs are uncertain, 

difficult to estimate, and can vary significantly. We anticipate determining which research and development projects to pursue as well 
as the level of funding available for each project based on the scientific research and pre-clinical and clinical results of each product 
candidate and related regulatory action. We expect our research and development expenses to continue to represent our largest 
category of operating expenses for at least the next 12 to 24 months.

General and Administrative Expenses

General and administrative expenses consist primarily of salary, related benefits and stock-based compensation of our executive, 

finance, legal, business development, commercial and administrative functions, travel expenses, allocated facility-related and 
information technology costs not otherwise included in research and development expenses, director compensation, director’s and 
officer’s insurance premiums, investor relations costs and professional fees for auditing, tax and legal services, including legal 
expenses for intellectual property protection. 

We expect that general and administrative expenses will increase in the future as we expand our operating activities to support 

increased research and development activities and the potential commercialization of our product candidates.

Other Income (Expense)

Interest Income. Interest income consists of income earned on our cash and investment balances. We anticipate that our interest 

income will continue to fluctuate depending on our cash and investment balances and interest rates.

Interest Expense. Interest expense consists of accrual of the final payment fee, amortization of debt discounts, and interest 

charged on our borrowings with Silicon Valley Bank. In May 2020, we repaid the total outstanding term loan balance ahead of the 
maturity date.

Foreign Exchange Gain (Loss). Net foreign exchange gains and losses consisted of gains and losses from the impact of foreign 
exchange fluctuations on our monetary assets and liabilities that are denominated in currencies other than the U.S. dollar (principally 
the Canadian dollar). We will continue to incur substantial expenses in Canadian dollars and will remain subject to risks associated 
with foreign currency fluctuations. 

Loss on repayment of term loan. In May 2020, we repaid the total outstanding balance of our term loan with Silicon Valley 

Bank ahead of the maturity date. We recorded a one-time loss of $1.0 million on the repayment of the term loan, inclusive of 
repayment fees.

68

Critical Accounting Policies and Significant Judgments and Estimates

Our management’s discussion and analysis of our financial condition and results of operations is based on our consolidated 

financial statements, which have been prepared in conformity with generally accepted accounting principles in the U.S., or U.S. 
GAAP. The preparation of our consolidated financial statements requires us to make estimates and assumptions that affect the 
reported amounts of assets and liabilities and the revenue and expenses incurred during the reported periods. We base estimates on our 
historical experience, known trends and various other factors that we believe are reasonable under the circumstances, the results of 
which form the basis for making judgments about the carrying value of assets and liabilities that are not apparent from other sources. 
Actual results may differ from these estimates under different assumptions or conditions.

The significant accounting policies that we believe to be most critical in fully understanding and evaluating our financial results 

are revenue recognition, research and development costs and stock-based compensation. For additional information, see “Note 3” of 
the consolidated financial statements included elsewhere in this Annual Report on Form 10-K.

Revenue recognition:

Revenue recognition is a critical accounting estimate due to the magnitude and nature of the revenues we receive.

Our primary sources of revenue are derived from non-refundable upfront payments, funding for research and development 

services, milestone payments, and royalties under various collaboration agreements. 

In contracts where we have more than one performance obligation to provide our customer with goods or services, each 
performance obligation is evaluated to determine whether it is distinct. The consideration under the contract is then allocated between 
the distinct performance obligations based on their respective relative standalone selling prices. The estimated standalone selling price 
of each deliverable reflects our best estimate of what the selling price would be if the deliverable was regularly sold on a standalone 
basis and is determined by reference to market rates for the good or service when sold to others or by using an adjusted market 
assessment approach if selling price on a standalone basis is not available. We generally recognize revenue from non-refundable 
upfront payments over the estimated term of the performance obligation or period in which the underlying benefit is transferred to the 
customer. We evaluate the measure of progress each reporting period and, if necessary, adjust the measure of performance and related 
revenue recognition.

The consideration allocated to each distinct performance obligation is recognized as revenue when control is transferred to our 

customer for the related goods or services. Consideration in exchange for research and development services performed by us on 
behalf of the licensee is recognized upon performance of such activities at rates consistent with prevailing market rates. Consideration 
associated with at-risk substantive performance milestones, including sales-based milestones, is recognized as revenue when we 
determine it is probable that a significant reversal of the cumulative revenue recognized will not occur. At the end of each subsequent 
reporting period, we re-evaluate the probability of achievement of such milestones, and if necessary, adjust our estimate of the overall 
transaction price. Sales-based royalties received in connection with licenses of intellectual property are subject to a specific exception 
in the revenue standards, whereby the consideration is not included in the transaction price and recognized in revenue until the 
customer’s subsequent sales or usages occur.

Research and development costs:

Research and development costs is a critical accounting policy due to the magnitude of the costs and the requirement to 
determine the proportionate performance of vendors to calculate third-party accrued and prepaid research and development expenses.

We incur development activity costs, such as pre-clinical costs, manufacturing costs and clinical trial costs paid to contract 

research organizations, contract development and manufacturing organizations, investigators and other vendors who conduct certain 
product development activities on our behalf. The amount of expenses recognized in a period related to service agreements is based on 
the work performed using an accrual basis of accounting. Vendors generally provide estimates of proportionate performance to allow 
us to determine an appropriate accrual. Payments made to third parties under these arrangements in advance of the receipt of the 
related services are recorded as prepaid expenses until the services are rendered.

Stock-based compensation:

Stock-based compensation is a critical accounting estimate due to the magnitude of and the many assumptions that are required 

to calculate stock-based compensation expense.

69

We grant stock options to employees, directors and officers pursuant to our stock option plans. Compensation expense is 
recorded using the fair value method. We calculate the fair value of stock options using the Black-Scholes option-pricing model which 
requires that certain assumptions, including the expected life of the option and expected volatility of the stock, be estimated at the time 
that the options are granted. The expected volatility is based on the historical volatility of our common shares calculated based on a 
period of time commensurate with the expected term assumption. The expected term of our stock options has been determined 
utilizing our available historical data and we recognize forfeitures as they occur. We amortize the fair value of stock options using the 
straight-line method over the vesting period of the options.

Results of Operations

Comparison of Years Ended December 31, 2020 and 2019

The following table summarizes the results of our operations for the years ended December 31, 2020 and 2019 together with 

changes in those items (in thousands):

Revenue
Research and development expenses
General and administrative expenses
Other:

Interest income
Interest expense
Foreign exchange gain
Loss on repayment of term loan

Loss before income taxes

  $

  $

 $

32,166 
50,523 
12,944 

2,283 
(484)   
1,396 
(988)   
(29,094)  $

Year Ended December 31,
2019
2020

Change
2020 vs. 2019
    Increase/(Decrease)  
25,337 
11,678 
2,141 

 $

6,829 
38,845 
10,803 

2,353 
(1,434)   
282 
— 
(41,618)  $

(70)
950 
1,114 
(988)
12,524  

Revenue

Revenue increased by $25.3 million for the year ended December 31, 2020 as compared to the year ended December 31, 2019. 

Revenue for the year ended December 31, 2020 related to recognition of $26.8 million of deferred revenue and $5.4 million for 
research and development services under our license and collaboration agreement with Neurocrine Biosciences, compared to $2.9 
million and $0.4 million, respectively, for the year ended December 31, 2019. Revenue for the year ended December 31, 2019 also 
included $3.5 million recognized in connection with our agreement with Flexion.

Research and Development Expenses

The following table summarizes research and development expenses for the years ended December 31, 2020 and 2019 together 

with changes in those items (in thousands):

XEN1101
XEN496
XEN901 (now known as NBI-921352)
Pre-clinical, discovery and other internal programs
Total research and development expenses

  $

  $

23,669 
12,345 
1,585 
12,924 
50,523 

 $

 $

Year Ended December 31,
2019
2020

 $

Change
2020 vs. 2019
    Increase/(Decrease)  
7,415 
8,293 
(7,337)
3,307 
11,678  

 $

16,254 
4,052 
8,922 
9,617 
38,845 

Research and development expenses increased by $11.7 million for the year ended December 31, 2020 as compared to the year 

ended December 31, 2019. The increase was primarily attributable to increased spending on our clinical development product candidates 
XEN1101 and XEN496, and, to a lesser extent, increased spending on our pre-clinical, discovery and other internal programs. This was 
partially offset by decreased spending on XEN901 (now known as NBI-921352) as clinical developments costs associated with the 
development of product candidates under the Neurocrine Biosciences collaboration including NBI-921352 are borne by Neurocrine 
Biosciences. We also incurred certain costs related to NBI-921352 development activities in the period; Neurocrine Biosciences 
reimburses us for development services we incur at fair market value under the terms of the collaboration agreement. 

70

 
 
 
   
 
 
 
   
   
  
  
   
  
  
   
  
  
  
  
  
   
  
  
   
   
  
  
   
  
 
 
   
 
 
 
   
   
  
  
   
  
  
   
  
  
General and Administrative Expenses

The following table summarizes general and administrative expenses for the years ended December 31, 2020 and 2019 together 

with changes in those items (in thousands):

General and administrative expenses

  $

12,944 

 $

10,803 

Year Ended December 31,

2020

2019

Change
2020 vs. 2019
    Increase/(Decrease)  
2,141  

 $

General and administrative expenses increased by $2.1 million for the year ended December 31, 2020 as compared to the year 
ended December 31, 2019. The increase was primarily attributable to increased stock-based compensation expense due to an increase 
in the number of options granted at a higher fair value, higher salaries and benefits due to increased headcount to support our 
expanding research and development activities and higher insurance premiums. The increase was partially offset by a decrease in legal 
fees due to timing of intellectual property protection activities.

Other Income

The following table summarizes our other income for the years ended December 31, 2020 and 2019 together with changes in 

those items (in thousands):

Other income

  $

2,207 

 $

1,201 

Year Ended December 31,

2020

2019

Change
2020 vs. 2019
    Increase/(Decrease)  
1,006  

 $

Other income increased by $1.0 million for the year ended December 31, 2020 as compared to the year ended December 31, 

2019. The increase in other income was primarily driven by an increase in foreign exchange gains and a decrease in interest expense 
due to the repayment of our term loan in May 2020, partially offset by a one-time loss on the repayment of our term loan of $1.0 
million. We recorded a foreign exchange gain of $1.4 million for the year ended December 31, 2020 as compared to a foreign 
exchange gain of $0.3 million in 2019, primarily driven by an increase in cash and cash equivalents and marketable securities held in 
Canadian dollars and a strengthening of the Canadian dollar against the U.S. dollar, given the timing of when actual marketable 
securities purchases were made during the year ended December 31, 2020 compared to the same period in 2019.

Liquidity and Capital Resources

To date, we have financed our operations primarily through funding received from collaboration and license agreements, private 

placements of our common and preferred shares, public offerings of our common shares, debt financing and, to a lesser extent, 
government funding. As of December 31, 2020, we had cash and cash equivalents and marketable securities of $177.0 million. 

We have incurred significant operating losses since inception. We had a $28.8 million net loss for the year ended December 31, 

2020 and an accumulated deficit of $278.5 million from inception through December 31, 2020. We expect to continue to incur 
significant expenses in excess of our revenue and expect to incur operating losses over the next several years. Our net losses may 
fluctuate significantly from quarter to quarter and year to year. We expect to continue to incur significant expenses and operating 
losses for the foreseeable future as we continue our research and pre-clinical and clinical development of our product candidates; 
expand the scope of our current studies for our product candidates; initiate additional pre-clinical, clinical or other studies for our 
product candidates, including under our collaboration agreements; change or add manufacturers or suppliers and manufacture drug 
supply and drug products for clinical trials and commercialization; seek regulatory and marketing approvals for any of our product 
candidates that successfully complete clinical studies; seek to identify, evaluate and validate additional product candidates; acquire or 
in-license other product candidates and technologies; make milestone or other payments under our product acquisition and in-license 
agreements, including, without limitation, payments to the Memorial University of Newfoundland, 1st Order Pharmaceuticals, Inc., 
and other third parties; maintain, protect and expand our intellectual property portfolio; attract and retain skilled personnel; establish a 
sales, marketing and distribution infrastructure to commercialize any products for which we or one of our collaborators may obtain 
marketing approval, and maintain commercial rights; create additional infrastructure to support our operations and our product 
development and planned future commercialization efforts; and experience any delays or encounter issues with any of the above.

71

 
 
 
   
 
 
 
   
 
 
 
   
 
 
 
   
Until such time as we can generate substantial product revenue, if ever, we expect to finance our cash needs through a 

combination of collaboration agreements and equity or debt financings. For example, in August 2020, we entered into an at-the-
market equity offering sales agreement with Jefferies LLC, or Jefferies, and Stifel, Nicolaus & Company, Incorporated, or Stifel, to 
sell our common shares having aggregate sales proceeds of up to $100.0 million, from time to time, through an “at-the-market” equity 
offering program under which Jefferies and Stifel are acting as sales agents. As of March 1, 2021, we had sold an aggregate of 
733,000 common shares for proceeds of $10.7 million, net of commissions paid, but excluding estimated transaction expenses. In 
addition, we entered into an underwriting agreement with Jefferies, Stifel, and Guggenheim Securities, LLC, relating to an 
underwritten public offering of 3,750,000 common shares at a public offering price of $16.00 per common share, and granted the 
underwriters an option for a period of 30 days to purchase up to an additional 562,500 common shares. The public offering was 
completed in January 2020 and the underwriters’ option was exercised in full in February 2020. We issued an aggregate of 4,312,500 
common shares and raised total proceeds of $65.2 million, net of underwriting discounts and commissions, but before offering 
expenses. In December 2019, pursuant to the terms of our license and collaboration agreement with Neurocrine Biosciences, we 
received an upfront cash payment of $30.0 million and we issued 1,408,847 common shares to Neurocrine Biosciences for an 
aggregate purchase price of $20.0 million. Further, in November 2019, we entered into an at-the-market equity offering sales 
agreement with Jefferies and Stifel, to sell our common shares having aggregate sales proceeds of up to $50.0 million, from time to 
time, through an “at-the-market” equity offering program under which Jefferies and Stifel acted as sales agent. As of January 2020, we 
had sold an aggregate of 3,252,330 common shares for proceeds of $48.8 million, net of commissions paid, but excluding transaction 
expenses. During the year ended December 31, 2018, we also entered into an amended and restated loan and security agreement with 
Silicon Valley Bank, or the Bank, providing for a term loan to us with an aggregate principal amount of $15.5 million. In May 2020, 
we repaid the total outstanding term loan balance ahead of the maturity date, pursuant to the terms of our amended and restated loan 
and security agreement.

Except for any obligations of our collaborators to make milestone payments and research and development funding under our 

agreements with them, we do not have any committed external sources of capital. To the extent that we raise additional capital through 
the future sale of equity or debt, the ownership interest of our shareholders will be diluted, and the terms of these securities may 
include liquidation or other preferences that adversely affect the rights of our existing shareholders. If we raise additional funds 
through collaboration agreements in the future, we may have to relinquish valuable rights to our technologies, future revenue streams 
or product candidates or grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds through 
equity or debt financings when needed, we may be required to delay, limit, reduce or terminate our product development or future 
commercialization efforts or grant rights to develop and market product candidates that we would otherwise prefer to develop and 
market ourselves.

Our future capital requirements are difficult to forecast and will depend on many factors, including:

•

•

the number and characteristics of the future product candidates we pursue either from our internal research efforts or 
through acquiring or in-licensing other product candidates or technologies;

the scope, progress, results and costs of independently researching and developing any of our future product candidates, 
including conducting pre-clinical research and clinical trials; 

• whether our existing collaborations continue to generate substantial milestone payments and, ultimately, royalties on future 

approved products for us;

•

•

•

•

•

•

•

the timing of, and the costs involved in, obtaining regulatory approvals for any future product candidates we develop 
independently;

the timing and magnitude of potential milestone payments and royalties under our product acquisition and in-license 
agreements;

the cost of commercializing any future products we develop independently that are approved for sale;

the cost of manufacturing our future product candidates and products, if any;

our ability to maintain existing collaborations and to establish new collaborations, licensing or other arrangements and the 
financial terms of such arrangements;

the costs of preparing, filing, prosecuting, maintaining, defending and enforcing patents, including litigation costs and the 
outcome of such litigation; and

the timing, receipt and amount of sales of, or royalties on our future products, if any.

72

Based on our research and development plans and our timing expectations related to the progress of our programs, we expect 
that our existing cash and cash equivalents and marketable securities as of the date of this report will enable us to fund our operating 
expenses and capital expenditure requirements for at least the next 12 months. We have based this estimate on assumptions that may 
prove to be wrong, and we could use our capital resources sooner than we expect. Additionally, the process of testing drug candidates 
in clinical trials is costly, and the timing of progress in these trials remains uncertain.

Cash Flows

The following table shows a summary of our cash flows for the years ended December 31, 2020 and 2019 (in thousands):

Net cash used in operating activities
Net cash used in investing activities
Net cash provided by financing activities

Operating Activities

  $

Year Ended December 31,
2020

2019

(48,124)  $
(16,824)   
85,795 

(4,714)  
(66,209)  
27,518 

For the year ended December 31, 2020, net cash used in operating activities totaled $48.1 million, compared to $4.7 million in 
2019. The increase in cash used in operating activities was related to the upfront cash received in 2019 from Neurocrine Biosciences 
and Flexion which partially offset expenditures incurred for the year ended December 31, 2019. In addition, the increase related to 
higher expenditures for the clinical development of our proprietary product candidates for the year ended December 31, 2020 as 
compared to the same period in 2019, partially offset by changes in operating assets and liabilities primarily attributable to the timing 
of payments for accrued clinical trial costs and accrued expenses in the normal course of business. 

Investing Activities

For the year ended December 31, 2020, net cash used in investing activities totaled $16.8 million, compared to $66.2 million in 
2019. The change in cash used in investing activities was driven primarily by a decrease in purchases of marketable securities, net of 
redemptions.

Financing Activities

For the year ended December 31, 2020, net cash provided by financing activities totaled $85.8 million, compared to $27.5 

million in 2019. The increase in cash provided by financing activities was primarily related to an increase in net proceeds from the 
issuance of common shares, partially offset by the repayment of the term loan.

Contractual Obligations 

As a smaller reporting company, we are not required to provide the information requested by this item pursuant to Item 303 of 

Regulation S-K.

Contractual Commitments

In August 2015, we entered into a priority access agreement with Medpace Inc., or Medpace, for the provision of certain clinical 

development services, under which we committed to using Medpace non-exclusively for clinical development services over the five 
year term of the agreement which ended in August 2020. We committed to $7.0 million of services over the term of the agreement of 
which $3.3 million of services have been received and $3.7 million remains committed as of December 31, 2020. As we did not meet 
the commitment to retain Medpace for $7.0 million of services prior to August 2020, we are required to provide Medpace the 
exclusive right to perform all subsequent outsourced clinical development work until such $7.0 million commitment has been 
satisfied, subject to the availability of appropriate Medpace resources and reasonable service rates. If we decide not to retain Medpace 
for the provision of clinical development services, we may satisfy our obligations under the priority access agreement by paying 
Medpace an amount equal to half of the unsatisfied portion. We intend to continue to utilize Medpace for clinical development work 
where appropriate in order to fulfill the remaining commitment; therefore, no liability has been recognized as of December 31, 2020 
with respect to the unsatisfied portion under the priority access agreement.  

In March 2017, we entered into a license, manufacture and supply agreement with a pharmaceutical contract manufacturing 

organization for the access and use of certain regulatory documents as well as for the manufacture and supply of clinical and 
commercial drug product to support the development of XEN007. Under the terms of the agreement, we will be required to pay a low 
single-digit percentage royalty on net sales of any products developed and commercialized under the agreement. 

73

 
 
 
 
 
   
   
   
   
  
 
   
In April 2017, we acquired XEN1101 (previously known as 1OP2198) from 1st Order Pharmaceuticals, Inc., or 1st Order, 

pursuant to an asset purchase agreement. In August 2020, we and 1st Order amended the asset purchase agreement to amend certain 
definitions in the agreement and to modify the payment schedule for certain milestones. Future potential payments to 1st Order 
include up to $1.2 million in clinical development milestones, up to $6.0 million in regulatory milestones, and $0.5 million in other 
milestones. To date, we have paid $0.3 million based on progress against these milestones. There are no royalty obligations to 1st 
Order.

In July 2017, we entered into a license agreement with a pharmaceutical company for the access and use of certain regulatory 

documents to support the development of XEN007. Future potential payments include $2.0 million in clinical development 
milestones, up to $7.0 million in regulatory milestones, plus a low-to-mid single-digit percentage royalty on net sales of any products 
developed and commercialized under the agreement. No amounts have been accrued to date based on the progress against these 
milestones.

In July 2018 and September 2018, we amended our collaborative research and license agreement with Genentech to provide us 

with greater flexibility in developing additional compounds that target Nav1.6. Pursuant to the amendment, we obtained a non-
exclusive, irrevocable, perpetual, world-wide, sublicensable license under the know-how forming part of the Genentech intellectual 
property developed under the Nav1.7 collaboration that is necessary or useful to make, use, sell, offer for sale, and import compounds 
from our Nav1.6 program that are above a certain potency on Nav1.7 and were conceived prior to a certain date and products 
containing those compounds. Our license from Genentech includes commercialization rights but we are restricted from developing or 
commercializing our Nav1.6 compounds below a certain potency on Nav1.7 and conceived prior to a certain date in the field of 
epilepsy and any of our Nav1.6 compounds conceived prior to a certain date, regardless of their potency on Nav1.7, in the field of 
pain. In exchange for the rights granted to us under this amendment, Genentech is eligible to receive a low single-digit percentage, 
tiered royalty on net sales of our Nav1.6 compounds conceived prior to a certain date, including XEN901 (now known as NBI-
921352), for a period of ten years from first commercial sale on a country-by-country basis. In accordance with our license and 
collaboration agreement with Neurocrine Biosciences, we remain solely responsible for all payments to Genentech with respect to 
certain Nav1.6 compounds, including NBI-921352, licensed to Neurocrine Biosciences. Pursuant to the amendment, we granted 
Genentech a royalty-free, non-exclusive, world-wide license under our Nav1.6 intellectual property to make, use, sell, offer for sale 
and import compounds below a certain potency on Nav1.7 and products containing those compounds for all uses and indications 
except epilepsy. 

Inflation

We do not believe that inflation has had a material effect on our business, financial condition or results of operations in the last 

three fiscal years.

Off-Balance Sheet Arrangements

We do not engage in any off-balance sheet financing activities. We do not have any interest in entities referred to as variable 

interest entities, which include special purposes entities and other structured finance entities.

Related Party Transactions

For a description of our related party transactions, see “Certain Relationships and Related Transactions, and Director 

Independence.”

Outstanding Share Data

As of February 26, 2021, we had 35,809,247 common shares issued and outstanding and outstanding stock options to purchase 
an additional 4,680,377 common shares. In addition, as of February 26, 2021, we had 1,016,000 Series 1 Preferred Shares issued and 
outstanding. The Series 1 Preferred Shares are convertible into common shares on a one-for-one basis subject to the holder, together 
with its affiliates, beneficially owning no more than 9.99% of the total number of common shares issued and outstanding immediately 
after giving effect to such conversion, or the Beneficial Ownership Limitation. The holder may reset the Beneficial Ownership 
Limitation to a higher or lower number, not to exceed 19.99% of the total number of common shares issued and outstanding 
immediately after giving effect to such conversion, upon providing written notice to us which will be effective 61 days after delivery 
of such notice. The holders of the Series 1 Preferred Shares are entitled to vote together with the common shares on an as-converted 
basis and as a single class, subject in the case of each holder of the Series 1 Preferred Shares to the Beneficial Ownership Limitation. 
The Series 1 Preferred Shares may be “restricted securities” as such term is defined under applicable Canadian securities laws, as any 
Series 1 Preferred Shares that are ineligible to be converted into common shares due to the Beneficial Ownership Limitation, 
measured as of a given record date that applies for a shareholder meeting or ability to act by written consent, shall be deemed to be 
non-voting securities. For additional information regarding our Series 1 Preferred Shares, see “Note 11d” to our consolidated financial 
statements included elsewhere in this Annual Report on Form 10-K. 

74

Recent Accounting Pronouncements 

In December 2019, the Financial Accounting Standards Board, or FASB, issued Accounting Standards Update, or ASU, 2019-
12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes.  These amendments simplify accounting for income 
taxes, change the accounting for certain income tax transactions and make certain improvements to the codification. These 
amendments will be effective for fiscal years and interim periods within those fiscal years, beginning after December 15, 2020 with 
early adoption permitted. We have evaluated the new guidance and determined it will not have a material impact on our consolidated 
financial statements.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

As a smaller reporting company, we are not required to provide the information requested by this item pursuant to Item 301 of 

Regulation S-K.

75

Item 8.

Financial Statements and Supplementary Data

XENON PHARMACEUTICALS INC. 
Index to Consolidated Financial Statements 

Year ended December 31, 2020 

Reports of Independent Registered Public Accounting Firm  ...........................................................................................................

Consolidated Balance Sheets as of December 31, 2020 and 2019  ...................................................................................................

Consolidated Statements of Operations and Comprehensive Loss for the years ended December 31, 2020 and 2019  ...................

Consolidated Statements of Shareholders’ Equity for the years ended December 31, 2020 and 2019  ............................................

Consolidated Statements of Cash Flows for the years ended December 31, 2020 and 2019 ............................................................

Notes to Consolidated Financial Statements .....................................................................................................................................

Index

77

78

79

80

81

82

76

 
Report of Independent Registered Public Accounting Firm

To the Shareholders and Board of Directors
Xenon Pharmaceuticals Inc.:

Opinion on the Consolidated Financial Statements 

We have audited the accompanying consolidated balance sheets of Xenon Pharmaceuticals Inc. (the Company) as of December 31, 
2020 and 2019, the related consolidated statements of operations and comprehensive loss, shareholders’ equity, and cash flows for 
each of the years in the two-year period ended December 31, 2020, and the related notes (collectively, the consolidated financial 
statements). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the 
Company as of December 31, 2020 and 2019, and the results of its operations and its cash flows for each of the years in the two-year 
period ended December 31, 2020, in conformity with U.S. generally accepted accounting principles.

Basis for Opinion 

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an 
opinion on these consolidated financial statements 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 audit 
to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to 
error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial 
reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the 
purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we 
express no such opinion.

Our audits 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. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter 

Critical audit matters are matters arising from the current period audit of the consolidated financial statements that were 
communicated or required to be communicated to the audit committee and that: (1) relate to accounts or disclosures that are material 
to the consolidated financial statements and (2) involved our especially challenging, subjective, or complex judgments. We 
determined that there are no critical audit matters.

/s/ KPMG LLP

Chartered Professional Accountants

We have served as the Company’s auditor since 1999.

Vancouver, Canada
March 1, 2021

77

December 31,

December 31,

2020

2019

 $

 $

 $

 $

 $

 $
 $

45,009 
131,988 
1,822 
2,964 
181,783 
3,326 
3,554 
523 
189,186 

10,874 
3,642 
265 
— 
14,781 
— 
3,050 
— 
17,831 

 $

 $

 $

 $

24,755   
116,603   
813   
2,695   
144,866   
933   
1,660   
238   
147,697   

8,818   
29,743   
168   
4,650   
43,379   
709   
743   
10,889   
55,720 

7,732 

 $

7,732   

397,748 
45,357 
(278,492)
(990)
171,355 
189,186 

 $
 $

294,244   
40,646   
(249,655)  
(990)  
91,977   
147,697   

XENON PHARMACEUTICALS INC. 
Consolidated Balance Sheets
(Expressed in thousands of U.S. dollars except share amounts) 

Assets
Current assets:

Cash and cash equivalents
Marketable securities
Accounts receivable
Prepaid expenses and other current assets

Operating lease right-of-use asset, net (note 8)
Property, plant and equipment, net (note 7)
Deferred tax assets (note 15)
Total assets

Liabilities and shareholders’ equity
Current liabilities:

Accounts payable and accrued expenses (note 9)
Deferred revenue (note 13)
Operating lease liability (note 8)
Term loan (note 10)

Deferred revenue, long-term (note 13)
Operating lease liability, long-term (note 8)
Term loan, long-term (note 10)

Shareholders’ equity:
Preferred shares, without par value; unlimited shares authorized; issued and
   outstanding: 1,016,000 (December 31, 2019 - 1,016,000) (note 11)
Common shares, without par value; unlimited shares authorized; issued and
   outstanding: 35,012,125 (December 31, 2019 - 28,139,228) (note 11)

Additional paid-in capital
Accumulated deficit
Accumulated other comprehensive loss

Total liabilities and shareholders’ equity

Collaboration agreements (note 13)
Commitments and contingencies (note 14)
Subsequent events (note 11a and note 13b)

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

78

 
 
 
 
   
 
 
 
 
   
  
  
  
    
  
  
  
    
  
  
  
  
  
  
 
  
  
  
  
  
  
  
  
 
  
  
  
    
  
  
  
    
  
  
  
    
  
  
  
  
  
  
 
  
  
  
  
  
  
  
  
 
 
 
  
  
  
    
  
  
  
    
  
  
  
  
  
  
  
  
 
 
 
   
   
   
   
  
  
    
   
 
   
   
   
   
  
  
    
   
XENON PHARMACEUTICALS INC.
Consolidated Statements of Operations and Comprehensive Loss
(Expressed in thousands of U.S. dollars except share and per share amounts)

Revenue (note 13): 

Operating expenses:

Research and development
General and administrative

Loss from operations
Other income (expense):

Interest income
Interest expense
Foreign exchange gain
Loss on repayment of term loan (note 10)

Loss before income taxes
Income tax recovery (note 15)
Net loss and comprehensive loss
Net loss attributable to preferred shareholders
Net loss attributable to common shareholders
Net loss per common share (note 6):

Basic and diluted

Weighted-average common shares outstanding (note 6):

Basic and diluted

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

Year Ended December 31,
2019

2020

 $

32,166    $

6,829 

50,523   
12,944   
63,467   
(31,301)  

2,283   
(484)  
1,396   
(988)  
(29,094)  
257   
(28,837)  
(824)  
(28,013)

 $

38,845 
10,803 
49,648 
(42,819)

2,353 
(1,434)
282 
— 
(41,618)
23 
(41,595)
(1,568)
(40,027)

(0.81)   $

(1.54)

34,542,213   

25,939,405 

 $

 $

79

 
 
 
 
 
 
 
 
 
 
 
    
   
   
 
 
    
   
   
 
 
  
 
 
  
 
 
 
  
 
 
  
 
 
    
   
   
 
 
  
 
 
  
 
 
  
 
 
  
 
 
  
 
 
  
 
 
  
 
 
  
 
 
 
    
   
   
 
 
 
    
   
   
 
 
  
 
 
XENON PHARMACEUTICALS INC.
Consolidated Statement of Shareholders’ Equity
(Expressed in thousands of U.S. dollars except share amounts)

Balance as of December 31,
   2018
Cumulative effect of accounting
   change
Net loss for the year
Issuance of common shares,
   net of issuance costs (note 11a)
Stock-based compensation
   expense
Issued pursuant to exercise
   of stock options
Balance as of December 31,
   2019
Net loss for the year
Issuance of common shares,
   net of issuance costs (note 11a)
Stock-based compensation
   expense
Issued pursuant to exercise
   of stock options
Balance as of December 31,
   2020

Convertible
preferred shares

Common shares

Shares

Amount

Shares

Amount

Additional
paid-in
capital

  Accumulated deficit   

Accumulated 
other
comprehensive
loss (1)

Total shareholders'
equity

  1,016,000 

 $

7,732 

   25,750,721 

 $

265,923 

 $

38,515 

 $

(207,885)

 $

(990)

 $

103,295 

(175)
(41,595)

   2,214,490 

27,396 

174,017 

925 

2,934 

(803)

  1,016,000 

 $

7,732 

   28,139,228 

 $

294,244 

 $

40,646 

 $

(249,655)
(28,837)

 $

(990)

 $

   6,759,187 

102,456 

113,710 

1,048 

5,677 

(966)

(175)
(41,595)

27,396 

2,934 

122 

91,977 
(28,837)

102,456 

5,677 

82 

  1,016,000 

 $

7,732 

   35,012,125 

 $

397,748 

 $

45,357 

 $

(278,492)

 $

(990)

 $

171,355  

(1)
currency of the Company was the Canadian dollar.

The  accumulated  other  comprehensive  loss  is  entirely  related  to  historical  cumulative  translation  adjustments  from  the  application  of  U.S.  dollar  reporting  when  the  functional 

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

80

 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
  
  
  
  
  
  
  
  
  
  
  
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
  
  
  
  
  
  
  
  
  
  
  
 
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
  
  
  
  
  
  
  
  
  
  
  
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
  
  
  
  
  
  
  
  
  
  
  
 
XENON PHARMACEUTICALS INC.
Consolidated Statements of Cash Flows
(Expressed in thousands of U.S. dollars)

Operating activities:

Net loss
Items not involving cash:

Depreciation
Amortization of discount on term loan
Deferred income tax recovery
Stock-based compensation
Unrealized foreign exchange gain
Unrealized gain on marketable securities
Loss on repayment of term loan (note 10)

Changes in operating assets and liabilities:

Accounts receivable
Prepaid expenses and other current assets
Accounts payable and accrued expenses
Deferred revenue

Net cash used in operating activities

Investing activities:

Purchases of property, plant and equipment
Purchase of marketable securities
Proceeds from marketable securities
Net cash used in investing activities

Financing activities:

Repayment of term loan and repayment fees (note 10)
Issuance of common shares, net of issuance costs (note 11a)
Issuance of common shares pursuant to exercise of stock options
Net cash provided by financing activities

Effect of exchange rate changes on cash and cash equivalents
Increase (decrease) in cash and cash equivalents
Cash and cash equivalents, beginning of year
Cash and cash equivalents, end of year

Supplemental disclosures:

Interest paid
Interest received
Cash paid for operating lease

Supplemental disclosures of non-cash transactions:

Fair value of stock options exercised on a cashless basis
Increase in operating lease right-of-use asset and operating lease liability related to 
lease amendment (note 8)

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

 $

 $

81

Year Ended December 31,
2019

2020

 $

(28,837)

 $

(41,595)

644 
216 
(285)
5,677 
(434)
(4)
988 

(1,032)
(269)
2,022 
(26,810)
(48,124)

(2,637)
(228,897)
214,710 
(16,824)

(16,743)
102,456 
82 
85,795 
(593)
20,254 
24,755 
45,009 

339 
4,115 
634 

887 

2,907 

 $

 $

429 
525 
(133)
2,924 
(302)
(82)
— 

(653)
(820)
4,541 
30,452 
(4,714)

(1,240)
(140,494)
75,525 
(66,209)

— 
27,396 
122 
27,518 
406 
(42,999)
67,754 
24,755 

917 
2,216 
634 

719 

— 

 
 
 
 
 
 
 
 
 
  
  
  
  
 
 
  
  
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
 
  
  
  
  
 
  
  
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
 
  
  
  
  
 
  
  
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
 
 
  
  
  
  
 
  
  
  
  
 
 
  
  
 
  
  
 
  
  
  
  
 
  
  
 
  
  
 
 
XENON PHARMACEUTICALS INC.
Notes to Consolidated Financial Statements
(Expressed in thousands of U.S. dollars except share and per share amounts)

1.

Nature of the business: 

Xenon  Pharmaceuticals  Inc.  (the  “Company”),  incorporated  in  1996  under  the  predecessor  to  the  Business  Corporations  Act 
(British  Columbia)  and  continued  federally  in  2000  under  the  Canada  Business  Corporations  Act,  is  a  clinical  stage 
biopharmaceutical  company  focused  on  developing  innovative  therapeutics  to  improve  the  lives  of  patients  with  neurological 
disorders, with a focus on epilepsy.

The  Company  has  incurred  significant  operating  losses  since  inception.  As  of  December 31,  2020,  the  Company  had  an 
accumulated deficit of $278,492 and a $28,837 net loss for the year ended December 31, 2020. Management expects to continue 
to incur significant expenses in excess of revenue and to incur operating losses for the foreseeable future. To date, the Company 
has financed its operations primarily through funding received from collaboration and license agreements, private placements of 
common and preferred shares, public offerings of common shares, debt financing, and government funding. 

Until  such  time  as  the  Company  can  generate  substantial  product  revenue,  if  ever,  management  expects  to  finance  the 
Company’s  cash  needs  through  a  combination  of  collaboration  agreements,  equity  and  debt  financings.  The  continuation  of 
research and development activities and the future commercialization of its products are dependent on the Company’s ability to 
successfully  raise  additional  funds  when  needed.  It  is  not  possible  to  predict  either  the  outcome  of  future  research  and 
development programs or the Company’s ability to continue to fund these programs in the future.

2.

Basis of presentation: 

These consolidated financial statements are presented in U.S. dollars and have been prepared in accordance with United States 
generally  accepted  accounting  principles  (“U.S.  GAAP”).  Certain  information  has  been  reclassified  to  conform  with  the 
financial statement presentation adopted for the current year.

The  Company  has  one  wholly-owned  subsidiary  as  of  December 31,  2020,  Xenon  Pharmaceuticals  USA  Inc.,  which  was 
incorporated in Delaware on December 2, 2016.

These  consolidated  financial  statements  include  the  accounts  of  the  Company  and  its  wholly-owned  subsidiary.  All 
intercompany transactions and balances have been eliminated on consolidation. 

3.

Significant accounting policies: 

(a) Use of estimates: 

The  preparation  of  the  consolidated  financial  statements  in  conformity  with  U.S.  GAAP  requires  management  to  make 
estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and 
liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting 
period.  Significant  areas  of  estimates  include,  but  are  not  limited  to, revenue  recognition  including  estimated  timing  of 
completion  of  performance  obligations  and  the  determination  of  stock-based  compensation.  These  estimates  and 
assumptions take into account historical and forward looking factors that the Company believes are reasonable, including 
but  not  limited  to  the  potential  impacts  arising  from  the  novel  coronavirus  (“COVID-19”)  and  pandemic  public  and 
private sector policies and initiatives aimed at reducing its transmission. The full extent to which the pandemic may have a 
direct 
condition, 
results 
including revenue, expenses, research and clinical development plans and timelines, depends on future developments that 
are  highly  uncertain,  including  as  a  result  of  new  information  that  may  emerge  concerning  COVID-19,  as  well  as  the 
economic  impact  on  local,  regional,  national  and global markets. Actual  results  could  differ  materially  from  these 
estimates. Estimates and assumptions are reviewed quarterly. All revisions to accounting estimates are recognized in the 
period in which the estimates are revised and in any future periods affected.

indirect impact on our 

operations 

business, 

financial 

and 

of 

or 

(b) Cash and cash equivalents: 

Cash  equivalents  are  highly  liquid  investments  that  are  readily  convertible  into  cash  with  terms  to  maturity  of  three 
months  or  less  when  acquired.  Cash  equivalents  are  recorded  at  cost  plus  accrued  interest.  The  carrying  value  of  these 
cash equivalents approximates their fair value. 

82

(c) Marketable securities: 

Marketable securities are investments with original maturities exceeding three months, and the Company classified these 
securities as current assets as the Company has the intent and ability to convert these securities into cash without penalty 
within the next 12 months. Marketable securities accrue interest based on a fixed interest rate for the term. The carrying 
value of marketable securities is recorded at quoted prices in active markets, which approximates their fair value.

(d) Intellectual property:

The costs incurred in establishing and maintaining patents for intellectual property developed internally are expensed in 
the period incurred.

(e) Property, plant and equipment: 

Property, plant and equipment are stated at cost less accumulated depreciation and/or accumulated impairment losses, if 
any. Repairs and maintenance costs are expensed in the period incurred. 

Property, plant and equipment are amortized over their estimated useful lives using the straight-line method based on the 
following rates: 

Asset
Research equipment
Office furniture and equipment
Computer equipment
Leasehold improvements

  Rate
  5 years
  5 years
  3 years

Over the lesser of lease term or
   estimated useful life

(f)

Impairment of long-lived assets: 

The  Company  monitors  its  long-lived  assets  for  indicators  of  impairment.  If  such  indicators  are  present,  the  Company 
assesses the recoverability of affected assets by determining whether the carrying value of such assets is less than the sum 
of the undiscounted future cash flows of the assets. If such assets are found not to be recoverable, the Company measures 
the amount of such impairment by comparing the carrying value of the assets to the fair value of the assets, with the fair 
value generally determined based on the present value of the expected future cash flows associated with the assets. No 
impairment of long-lived assets was noted during the years ended December 31, 2020 and 2019. 

(g) Leases:

Leases  classified  as  operating  leases  are  recorded  as  lease  liabilities  based  on  the  present  value  of  minimum  lease 
payments  over  the  lease  term,  discounted  using  the  lessor’s  rate  implicit  in  the  lease  or  the  Company’s  incremental 
borrowing  rate,  if  the  lessor’s  implicit  rate  is  not  readily  determinable.  The  lease  term  includes  all  periods  covered  by 
renewal  and  termination  options  where  the  Company  is  reasonably  certain  to  exercise  the  renewal  options  or  not  to 
exercise the termination options. Corresponding right-of-use assets are recognized consisting of the lease liabilities, initial 
direct costs and any lease incentive payments.  Lease liabilities are drawn down as lease payments are made and right-of-
use assets are depreciated over the term of the lease. Operating lease expenses are recognized on a straight-line basis over 
the  term  of  the  lease,  consisting  of  interest  accrued  on  the  lease  liability  and  depreciation  of  the  right-of-use  asset, 
adjusted  for  changes  in  index-based  variable  lease  payments  in  the  period  of  change. Lease  payments  on  short-term 
operating leases with lease terms twelve months or less are expensed as incurred.

(h) Concentration of credit risk and of significant customers: 

Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of 
cash and cash equivalents. Cash and cash equivalents were held at major financial institutions in Canada and the United 
States. Such deposits may be in excess of insured limits in the event of non-performance by the institutions; however, the 
Company does not anticipate non-performance. 

Neurocrine Biosciences, Inc. ("Neurocrine Biosciences") accounted for 100% of revenue recognized for the year ended 
December 31, 2020. Neurocrine Biosciences and Flexion Therapeutics, Inc. (“Flexion”) accounted for 48% and 51% of 
revenue recognized for the year ended December 31, 2019, respectively.

(i) Financial instruments and fair value: 

We measure certain financial instruments and other items at fair value. 

83

 
 
 
To determine the fair value, the Company uses the fair value hierarchy for inputs used to measure fair value of financial 
assets  and  liabilities.  This  hierarchy  prioritizes  the  inputs  to  valuation  techniques  used  to  measure  fair  value  into  three 
levels: Level 1 (highest priority), Level 2, and Level 3 (lowest priority). 

•

•

•

Level 1 - Unadjusted quoted prices in active markets for identical instruments.

Level 2 - Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either 
directly or indirectly. Level 2 inputs include quoted prices for similar assets or liabilities in active markets, quoted 
prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that 
are observable for the asset or liability (i.e., interest rates, yield curves, etc.), and inputs that are derived principally 
from or corroborated by observable market data by correlation or other means (market corroborated inputs). 

Level 3 - Inputs are unobservable and reflect the Company’s assumptions as to what market participants would use 
in pricing the asset or liability. The Company develops these inputs based on the best information available. 

Assets and liabilities are classified based on the lowest level of input that is significant to the fair value measurements. 
Changes in the observability of valuation inputs may result in a reclassification of levels for certain securities within the 
fair value hierarchy. 

The Company’s Level 1 assets include cash and cash equivalents and marketable securities with quoted prices in active 
markets.  The  carrying  amount  of  accounts  receivables,  accounts  payable  and  accrued  expenses  approximates  fair  value 
due to the nature and short-term of those instruments.

(j) Revenue recognition: 

The Company recognizes the amount of revenue to which it expects to be entitled, for the transfer of promised goods or  
services  to  customers  under  a  five-step  model:  (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 revenue when or as a performance obligation is satisfied. 

The Company generates revenue primarily through collaboration agreements. Such agreements may require the Company 
to deliver various rights and/or services, including intellectual property rights or licenses and research and development 
services.  Under  such  collaboration  agreements,  the  Company  is  generally  eligible  to  receive  non-refundable  upfront 
payments, funding for research and development services, milestone payments, and royalties. 

In contracts where the Company has more than one performance obligation to provide its customer with goods or services, 
each performance obligation is evaluated to determine whether it is distinct based on whether (i) the customer can benefit 
from the good or service either on its own or together with other resources that are readily available and (ii) the good or 
service is separately identifiable from other promises in the contract. The consideration under the contract is then allocated 
between  the  distinct  performance  obligations  based  on  their  respective  relative  standalone  selling  prices.  The  estimated 
standalone selling price of each deliverable reflects the Company’s best estimate of what the selling price would be if the 
deliverable was regularly sold on a standalone basis and is determined by reference to market rates for the good or service 
when  sold  to  others  or  by  using  an  adjusted  market  assessment  approach  if  selling  price  on  a  standalone  basis  is  not 
available. 

The consideration allocated to each distinct performance obligation is recognized as revenue when control is transferred to 
the  customer  for  the  related  goods  or  services.  Consideration  in  exchange  for  research  and  development  services 
performed by the Company on behalf of the licensee is recognized upon performance of such activities at rates consistent 
with prevailing market rates. Consideration associated with at-risk substantive performance milestones, including sales-
based  milestones,  is  recognized  as  revenue  when  it  is  probable  that  a  significant  reversal  of  the  cumulative  revenue 
recognized will not occur. Sales-based royalties received in connection with licenses of intellectual property are subject to 
a  specific  exception  in  the  revenue  standards,  whereby  the  consideration  is  not  included  in  the  transaction  price  and 
recognized in revenue until the customer’s subsequent sales or usages occur.

(k) Research and development costs: 

Research and development costs are expensed in the period incurred. 

Certain development activity costs, such as pre-clinical costs, manufacturing costs and clinical trial costs, are a component 
of  research  and  development  costs  and  include  fees  paid  to  contract  research  organizations,  contract  development  and 
manufacturing  organizations,  investigators  and  other  vendors  who  conduct  certain  product  development  activities  on 
behalf of the Company. The amount of expenses recognized in a period related to service agreements is based on the work 
performed  using  the  accrual  basis  of  accounting.  Vendors  generally  provide  estimates  of  proportionate  performance  to 
allow  the  Company  to  determine  an  appropriate  accrual.  Payments  made  to  third  parties  under  these  arrangements  in 
advance of the receipt of the related services are recorded as prepaid expenses until the services are rendered. 

84

(l) Stock-based compensation: 

The Company grants stock options to employees, directors and officers pursuant to stock option plans described in note 
11c.

Employee stock-based compensation expense is measured at the grant date, based on the estimated fair value of the award, 
and is recognized as an expense, net of actual forfeitures, over the requisite service period with a corresponding increase 
in  additional  paid-in  capital.  Stock-based  compensation  expense  is  amortized  on  a  straight-line  basis  over  the  requisite 
service  period  for  the  entire  award,  which  is  generally  the  vesting  period  of  the  award.  Any  consideration  received  on 
exercise of stock options is credited to share capital. 

(m) Foreign currency translation: 

The functional and reporting currency of the Company and its subsidiary is the U.S. dollar. Monetary assets and liabilities 
denominated in a currency other than the U.S. dollar are re-measured into U.S. dollars at the exchange rate prevailing as 
of the balance sheet date. Non-monetary assets and liabilities acquired in a currency other than U.S. dollars are translated 
at historical exchange rates prevailing at each transaction date.

Revenue and expense transactions are translated at the exchange rates prevailing at each transaction date. Exchange gains 
and  losses  on  translation  are  included  in  the  consolidated  statements  of  operations  and  comprehensive  income  (loss)  as 
foreign exchange gain (loss).

(n) Income taxes: 

Deferred  income  taxes  are  recognized  for  the  future  tax  consequences  attributable  to  differences  between  the  carrying 
amounts of assets and liabilities and their respective tax bases and net operating loss and credit carryforwards. Deferred 
income tax assets and liabilities are measured at enacted rates expected to apply to taxable income in the years in which 
those temporary differences and carryforwards are expected to be recovered or settled. The effect on deferred income tax 
assets and liabilities of a change in tax rates is recognized in the consolidated statement of operations and comprehensive 
income  (loss)  in  the  period  that  includes  the  enactment  date.  A  valuation  allowance  is  provided  when  realization  of 
deferred income tax assets does not meet the more-likely-than-not criterion for recognition.

(o) Segment and geographic information: 

Operating segments are defined as components of an enterprise about which separate discrete information is available for 
evaluation by the chief operating decision maker, or decision making group, in deciding how to allocate resources and in 
assessing performance. The Company views its operations and manages its business in one operating segment.

4.

Changes in significant accounting policies:   

In November 2019, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2019-
08, Compensation—Stock Compensation (Topic 718) and Revenue from Contracts with Customers (Topic 606): Codification 
Improvements—Share-Based Consideration Payable to a Customer.   These amendments clarify that companies must measure 
and classify share-based payment awards to a customer following the guidance in Topic 718. A company will classify awards as 
liabilities or equity following the guidance in Topic 718, and measure them at their grant-date fair value. The awards will be 
recorded as a reduction to revenue or an expense based on the guidance in Topic 606. If a company intends to provide an award 
to a customer and the grant date has not occurred, the transaction price guidance in Topic 606 should be followed to estimate the 
fair value of the award. A company must adjust the fair value estimate each reporting date until a grant date is achieved and 
recognize  changes  in  the  grant-date  fair  value  of  an  award  as  a  result  of  changes  in  the  expected  outcome  of  a  service  or  a 
performance condition as a reduction in the transaction price. If the terms of the award are modified after the grantee vests in the 
award and is no longer a customer, the award may be subject to other guidance. The Company has adopted this standard as of 
January 1, 2020 on a retrospective basis. The adoption of the standard had no impact on the Company’s consolidated balance 
sheets, consolidated statements of operations and comprehensive loss and consolidated statements of cash flows. 

85

5.

Future changes in accounting policies: 

In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes.  
These amendments simplify accounting for income taxes, change the accounting for certain income tax transactions and make 
certain improvements to the codification. These amendments will be effective for fiscal years and interim periods within those 
fiscal years, beginning after December 15, 2020 with early adoption permitted. The Company has evaluated the new guidance 
and determined it will not have a material impact on the Company’s consolidated financial statements.

6.

Net income (loss) per common share:

Basic net income (loss) per common share is calculated using the two-class method required for participating securities which 
includes 1,016,000 Series 1 Preferred Shares as a separate class for the year ended December 31, 2020 (2019 – 1,016,000). The 
convertible  preferred  shares  entitle  the  holders  to  participate  in  dividends  and  in  earnings  and  losses  of  the  Company  on  an 
equivalent  basis  as  common  shares.  Accordingly,  undistributed  earnings  (losses)  are  allocated  to  common  shares  and 
participating preferred shares based on the weighted-average shares of each class outstanding during the period.

The  treasury  stock  method  is  used  to  compute  the  dilutive  effect  of  the  Company’s  stock  options  and  warrants.  Under  this 
method,  the  incremental  number  of  common  shares  used  in  computing  diluted  net  income  (loss)  per  common  share  is  the 
difference between the number of common shares assumed issued and purchased using assumed proceeds.

The  if-converted  method  is  used  to  compute  the  dilutive  effect  of  the  Company’s  convertible  preferred  shares.  Under  the  if-
converted  method,  dividends  on  the  preferred  shares,  if  applicable,  are  added  back  to  earnings  attributable  to  common 
shareholders,  and  the  preferred  shares  and  paid-in  kind  dividends  are  assumed  to  have  been  converted  at  the  share  price 
applicable at the end of the period. The if-converted method is applied only if the effect is dilutive. 

For the years ended December 31, 2020 and 2019, all stock options, warrants and convertible preferred shares were anti-dilutive 
and were excluded from the diluted weighted average common shares outstanding for the period.    

7.

Property, plant and equipment: 

Property, plant and equipment consisted of the following: 

Research equipment
Office furniture and equipment
Computer equipment
Leasehold improvements
Less: accumulated depreciation and amortization
Net book value

8. 

Leases:

December 31,

2020

2019

 $

 $

8,683 
994 
2,641 
6,390 
(15,154)
3,554 

 $

 $

6,522 
985 
2,473 
6,370 
(14,690)
1,660  

The Company has one operating lease for research laboratories and office space in Burnaby, British Columbia. In October 2020, 
the  Company  entered  into  a  lease  amendment  for  a  21–month  committed  term  from  October  1,  2020  to  June  30,  2022.  A 
renewal  option  for  a  portion  of  the  facility  for  a  5-year  term  that  is  reasonably  certain  of  exercise  has  been  included  in  the 
determination of the right-of-use asset and lease liability as of December 31, 2020. 

The cost components of the operating lease were as follows for the years ended December 31, 2020 and 2019:

Lease Cost

Operating lease expense
Variable lease expense(1)
Lease Term and Discount Rate
Remaining lease term (years)
Discount rate

Year Ended December 31,
2019

2020

 $

 $

536 
549 

6.50 
2.45%   

436 
542 

2.25 
3.75%

(1) Variable  lease  costs  are  payments  that  vary  because  of  changes  in  facts  or  circumstances  and  include  common  area 
maintenance  and  property  taxes  related  to  the  premises.  Variable  lease  costs  are  excluded  from  the  calculation  of 
minimum lease payments. 

86

 
 
 
 
 
 
 
 
  
  
  
  
  
  
  
  
 
 
 
 
 
 
 
 
    
 
    
 
  
  
    
 
    
 
  
 
  
Future minimum lease payments as of December 31, 2020 were as follows:

Year ending December 31:

2021
2022
2023
2024
2025 and thereafter

Total future minimum lease payments
Less: imputed interest
Less: future lease incentives reasonably certain of use
Present value of lease liabilities

 $

  $

  $

9.

Accounts payable and accrued expenses: 

Accounts payable and accrued expenses consisted of the following: 

Trade payables
Employee compensation, benefits, and related accruals
Consulting and contracted research
Professional fees
Other
Total

10. Term Loan:

December 31,

2020

2019

 $

 $

3,041  $
2,859   
4,738   
167   
69   
10,874  $

811 
694 
569 
569 
1,423 
4,066 
(284)
(467)
3,315  

2,473 
2,892 
3,104 
154 
195 
8,818  

In  August  2018,  the  Company  entered  into  an  Amended  and  Restated  Loan  and  Security  Agreement  (the  “Amended  and 
Restated Loan Agreement”) with Silicon Valley Bank (the “Bank”), pursuant to which the Bank agreed to extend a term loan to 
the Company with a principal amount of $15,500 (the “Term Loan”). The Term Loan accrued interest at a floating per annum 
rate  of  0.5%  above  the  prime  rate.  The  Term  Loan  was  interest-only  until  March  31,  2020,  followed  by  30  equal  monthly 
installments of principal plus interest, originally maturing on September 1, 2022. In addition, the Company was required to pay 
a final payment fee of 6.5% of the Term Loan on the date on which the term loan was prepaid, paid or became due and payable 
in full. 

In May 2020, the Company repaid the total outstanding Term Loan balance ahead of the maturity date. The repayment consisted 
of  (i)  the  outstanding  principal  balance,  (ii)  a  final  payment  fee  of  $1,008, which  was  partially  accrued  up  to  the  date  of 
repayment, and (iii) a prepayment fee of $225. At the time of repayment, all liabilities and obligations under the Amended and 
Restated  Loan  Agreement  terminated  automatically.  The  Company  recorded  a  loss  on  repayment  of  the  Term  Loan  of  $988, 
which  represents  the  difference  between  the  carrying  value  of  the  Term  Loan  on  the  repayment  date  and  the  amount  paid  to 
extinguish  the  Term  Loan.  The  repayment  did  not  affect  the  Bank’s  rights  in  connection  with  the  warrant  to  the  Bank  to 
purchase 40,000 of our common shares at a price per common share of $9.79 which will remain outstanding until exercised or 
expired in August 2028.

11.

Share capital: 

(a) Financing:

In  November  2019,  the  Company  entered  into  an  at-the-market  equity  offering  sales  agreement  with  Jefferies  LLC 
(“Jefferies”)  and  Stifel,  Nicolaus  &  Company,  Incorporated  (“Stifel”)  to  sell  common  shares  of  the  Company  having 
aggregate gross proceeds of up to $50,000 from time to time, through an “at-the-market” equity offering program under 
which Jefferies and Stifel would act as sales agents. As of December 31, 2019, the Company had sold 805,643 common 
shares  under  the  sales  agreement  for  proceeds  of  approximately  $10,771,  net  of  commissions  paid,  but  excluding 
transaction  expenses.  In  January  2020,  the  Company  sold  an  additional  2,446,687  common  shares  for  proceeds  of 
approximately $37,979, net of commissions paid, but excluding transaction expenses. 

87

    
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
 
In  December  2019,  in  connection  with  the  License  and  Collaboration  Agreement with  Neurocrine  Biosciences  (the 
"Neurocrine Collaboration Agreement"), the Company executed a Share Purchase Agreement ("SPA") pursuant to which 
the Company issued 1,408,847 common shares for an aggregate purchase price of $20,000, or $14.196 per common share, 
which represents a premium of $3,333 when measured at fair value on the date of issuance.  These common shares are 
subject  to  lock-up  restrictions  and standstill  agreement  for  a  period  of  two  years.    The  SPA  contains  certain  other 
customary terms and conditions, including mutual representations, warranties and covenants. For additional information 
regarding the Neurocrine Collaboration Agreement, refer to note 13a.   

In January 2020, the Company entered into an underwriting agreement with Jefferies, Stifel and Guggenheim Securities, 
LLC, relating to an underwritten public offering of 3,750,000 common shares sold by the Company at a public offering 
price of $16.00 per common share, and granted the underwriters an option for a period of 30 days to purchase up to an 
additional 562,500 common shares. The public offering was completed on January 27, 2020, and the Company received 
net proceeds of $56,700, net of underwriting discounts and commissions, but before offering expenses. The underwriters 
exercised  their  option  in  full  in  February  2020  and  the  Company  received  additional  net  proceeds  of  $8,460,  net  of 
underwriting discounts and commissions, but before offering expenses.

In August 2020, the Company entered into an at-the-market equity offering sales agreement with Jefferies and Stifel to 
sell common shares of the Company having aggregate gross proceeds of up to $100,000, from time to time, through an 
“at-the-market” equity offering program under which Jefferies and Stifel would act as sales agents. As of December 31, 
2020, no common  shares  have  been  sold  under  the  sales  agreement.    As  of  March  1,  2021,  the  Company  sold  733,000 
common  shares  for  proceeds  of  approximately  $10,720,  net  of  commissions  paid,  but  excluding  estimated  transaction 
expenses.

(b) Authorized share capital:

The  Company’s  authorized  share  capital  consists  of  an  unlimited  number  of  common  and  preferred  shares  without  par 
value.

(c) Stock-based compensation:

The  Company  has  three  equity  incentive  plans:  (i)  a  pre-existing  stock  option  plan  (the  “Amended  and  Restated  Stock 
Option Plan”), (ii) the 2014 Equity Incentive Plan (the “2014 Plan”) which was amended and restated in June 2020, and 
(iii) the 2019 Inducement Equity Incentive Plan (the “2019 Inducement Plan”). 

The Amended and Restated Stock Option Plan provided for the grant of stock options for the purchase of common shares 
to directors, officers, employees and consultants prior to the Company’s initial public offering. The stock options granted 
under the Amended and Restated Stock Option Plan vest on a graduated basis over a four-year period or less and each 
option’s maximum term is ten years. The 2014 Plan replaced the Amended and Restated Stock Option Plan. No further 
options  will  be  granted  under  the  Company’s  Amended  and  Restated  Stock  Option  Plan.    The  Amended  and  Restated 
Stock Option Plan will continue to govern the stock options granted thereunder.

In  June  2014,  the  shareholders  of  the  Company  approved  the  2014  Plan,  which  was  replaced  in  June  2020  by  the 
Amended and Restated 2014 Equity Incentive Plan (the “Amended and Restated 2014 Plan”).  The Amended and Restated 
2014 Plan governs all options granted under the 2014 Plan.

In  September  2019,  the  board  of  directors  of  the  Company  adopted  the  2019  Inducement  Plan  and,  subject  to  the 
adjustment  provisions  of  the  2019  Inducement  Plan,  reserved  400,000  of  the  Company’s  common  shares  for  issuance 
pursuant  to  equity  awards  granted  under  the  2019  Inducement  Plan.  The  2019  Inducement  Plan  was  adopted  without 
shareholder approval in accordance with the applicable Nasdaq Listing Rules. The 2019 Inducement Plan provided for the 
grant of equity-based awards, including share options, share appreciation rights, restricted share awards, restricted share 
unit  awards  and  performance  share  awards,  and  its  terms  are  substantially  similar  to  the  Company’s  Amended  and 
Restated 2014 Plan, including with respect to treatment of equity awards in the event of a “merger” or “change of control” 
as defined under the 2019 Inducement Plan, but with such other terms and conditions intended to comply with the Nasdaq 
inducement award exception or to comply with the Nasdaq acquisition and merger exception. The 2019 Inducement Plan 
was terminated in connection with the shareholder approval of the Amended and Restated 2014 Plan. No further options 
will  be  granted  under  the  2019  Inducement  Plan,  and  the  2019  Inducement  Plan  will  continue  to  govern  the  options 
granted thereunder.

88

In  June  2020,  the  shareholders  of  the  Company  approved  the  Amended  and  Restated  2014  Plan,  amending  certain 
provisions  of  the  Company’s  2014  Plan.  The  Amended  and  Restated  2014  Plan  continues  to  permit  the  grant  of  stock-
based  compensation  awards  to  directors,  officers,  employees  and  consultants  of  the  Company  and  the  issuance  of 
restricted  shares,  restricted  share  units,  share  appreciation  rights  and  performance  shares.  Under  the  Amended  and 
Restated 2014 Plan, options granted generally vest on a graduated basis over a four-year period or less. The exercise price 
of the options is determined by the board of directors but must at least be equal to the fair market value of the common 
shares  on  the  date  of  grant.  Options  may  be  exercised  over  a  maximum  term  of  ten  years.    The  annual  share  increase 
provision  of  the  2014  Plan  was  eliminated  and  the  number  of  common  shares  available  for  issuance  was  increased  by 
4,000,000 over the existing share reserve under the 2014 Plan. The number of common shares that can be issued through 
restricted share awards, restricted share unit awards, or performance share awards was amended to be limited to 1,000,000 
common  shares,  in  the  aggregate.  Other  amendments  were  made  to  terms  of  the  2014  Plan  with  respect  to  repricing, 
change  of  control  and  payment  of  dividends  and  other  distributions.  As  of  December  31,  2020,  a  total  of  3,841,942 
common shares remain available for issuance pursuant to the Amended and Restated 2014 Plan.  

Summary of stock option activity is as follows: 

  Number of    Weighted Average Exercise Price    Aggregate

CAD $

U.S. $

   Intrinsic Value 
3,483 

Outstanding, December 31, 2018
Granted
Exercised(1)
Forfeited, cancelled or expired
Outstanding, December 31, 2019
Granted
Exercised(1)
Forfeited, cancelled or expired
Outstanding, December 31, 2020
Exercisable, December 31, 2020

  Options
  2,671,906    
  1,225,575    
   (266,157)   
(97,088)   
  3,534,236    
  1,482,250    
   (171,812)   
(85,677)   
  4,758,997    
  2,422,560    

9.49 
12.49 
5.56 
16.36 
10.29 
16.10 
7.60 
16.87 
11.59 
9.84 

6.96   
9.43   
4.24   
12.41   
7.90   
11.75   
5.76   
13.04   
9.10   
7.73   

1,594 

19,618 

1,535 

30,464 
19,060  

(1) During  the  year  ended  December 31,  2020,  26,513  (2019  –  36,174)  stock  options  were  exercised  for  the  same 
number of common shares in exchange for cash. In the same period, the Company issued 87,197 (2019 – 137,843) 
common shares for the cashless exercise of 145,299 (2019 – 229,983) stock options.

The following table summarizes the stock options outstanding and exercisable at December 31, 2020:

Options Outstanding

Options Exercisable

Range of Exercise Prices
U.S. $
$2.10 - $5.35
$5.36 - $9.18
$9.19 - $9.52
$9.53 - $11.72
$11.73 - $18.70

Weighted
Average
Remaining
Contractual 
Life
(years)

Number of
Options

Outstanding    

970,895    
954,108    
   1,097,873    
   1,302,419    
433,702    
   4,758,997    

Number of
Options

Exercisable    

Weighted Average
Exercise Price
    CAD $     U.S. $     

Weighted Average
Exercise Price
    CAD $     U.S. $  
5.20     4.81     3.78     813,220     4.64     3.65 
5.50     10.00     7.85     896,370     10.07     7.91 
8.71     12.02     9.44     461,065     12.02     9.44 
3,488     12.63     9.92 
9.26     14.65     11.50    
6.47     19.92     15.64     248,417     21.95     17.24 
7.30     11.59     9.10    2,422,560     9.84     7.73  

At  December 31,  2020,  stock  options  outstanding  and exercisable  had  a  weighted  average remaining  contractual  life  of 
7.30 years and 5.71 years, respectively.

89

 
 
 
   
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
   
 
 
   
   
 
    
   
 
  
  
  
 
A summary of the Company’s non-vested stock option activity and related information for the year ended December 31, 
2020 is as follows:

Non-vested, January 1, 2020
Granted
Vested
Forfeited or cancelled
Non-vested, December 31, 2020

 Number of Options   Weighted Average Grant Date Fair Value 
CAD $

USD $

1,588,210    
1,482,250    
(688,590)   
(45,433)   
2,336,437    

7.17 
9.50 
6.84 
7.43 
8.64 

5.51 
7.46 
5.37 
5.83 
6.78  

The aggregate fair value of options vested during the year ended December 31, 2020 was $3,698 (2019 – $3,255).

The  fair  value  of  stock  options  at  the  date  of  grant  is  estimated  using  the  Black-Scholes  option-pricing  model  which 
requires multiple subjective inputs. The risk-free interest rate of the options is based on the U.S. Treasury yield curve in 
effect at the date of grant for a term similar to the expected term of the option. The expected volatility is based on the 
historical  volatility  of  the  Company’s  common  shares  calculated  based  on  a  period  of  time  commensurate  with  the 
expected term assumption. Expected life assumptions are based on the Company’s historical data. The dividend yield is 
based  on  the  fact  that  the  Company  has  never  paid  cash  dividends  and  has  no  present  intention  to  pay  cash  dividends. 
Forfeitures are recognized as they occur.

The weighted-average option pricing assumptions are as follows:

Average risk-free interest rate
Expected volatility
Average expected term (in years)
Expected dividend yield
Weighted average fair value of options granted

Year Ended December 31,

2020

2019

0.72%   
68%   

6.79 
0.00%   
 $
7.46 

1.77%  
69%  

6.86 
0.00%  
6.23 

 $

Stock-based compensation expense is classified in the consolidated statements of operations and comprehensive loss as 
follows:

Research and development expenses
General and administrative expenses

Year Ended December 31,
2020

2019

 $

 $

1,936 
3,741 
5,677 

 $

 $

1,283 
1,661 
2,944 

As  of  December 31,  2020,  the  unrecognized  stock-based  compensation  expense  related  to  the  non-vested  stock  options 
was $13,571, which is expected to be recognized over a weighted-average period of 2.59 years. 

(d) Exchange agreement with certain funds affiliated with BVF Partners L.P. (collectively, “BVF”):

In  March  2018,  the  Company  and  BVF  entered  into  an  exchange  agreement  pursuant  to  which  the  Company  issued  to 
BVF 2,868,000 Series 1 Preferred Shares in exchange for 2,868,000 common shares which were subsequently cancelled 
by the Company. 

90

 
 
    
   
 
 
 
  
  
  
  
  
  
  
  
  
  
 
 
 
 
 
 
 
 
  
  
  
  
 
  
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
The  Company  filed  articles  of  amendment  creating  an  unlimited  number  of  Series  1  Preferred  Shares.  The  Series  1 
Preferred  Shares  are  convertible  into  common  shares  on  a  one-for-one  basis  subject  to  the  holder,  together  with  its 
affiliates,  beneficially  owning  no  more  than  9.99%  of  the  total  number  of  common  shares  issued  and  outstanding 
immediately  after  giving  effect  to  such  conversion  (the  “Beneficial  Ownership  Limitation”).  The  holder  may  reset  the 
Beneficial  Ownership  Limitation  to  a  higher  or  lower  number,  not  to  exceed  19.99%  of  the  total  number  of  common 
shares  issued  and  outstanding  immediately  after  giving  effect  to  such  conversion,  upon  providing  written  notice  to  the 
Company which will be effective 61 days after delivery of such notice. Each Series 1 Preferred Share is also convertible 
into one common share at any time at the Company’s option without payment of additional consideration, provided that 
prior to any such conversion, the holder, together with its affiliates, beneficially owns less than 5.00% of the total number 
of  common  shares  issued  and  outstanding  and  such  conversion  will  not  result  in  the  holder,  together  with  its  affiliates, 
beneficially  holding  more  than  5.00%  of  the  total  number  of  common  shares  issued  and  outstanding  immediately  after 
giving effect to such conversion. In the event of a change of control, holders of Series 1 Preferred Shares shall be issued 
one common share for each outstanding Series 1 Preferred Share held immediately prior to the change of control (without 
regard to the Beneficial Ownership Limitation), and following such conversion, will be entitled to receive the same kind 
and amount of securities, cash or property that a holder of common shares is entitled to receive in connection with such 
change of control.

The Series 1 Preferred Shares rank equally to the common shares in the event of liquidation, dissolution or winding up or 
other distribution of the assets of the Company among its shareholders and the holders of the Series 1 Preferred Shares are 
entitled to vote together with the common shares on an as-converted basis and as a single class, subject in the case of each 
holder  of  the  Series  1  Preferred  Shares  to  the  Beneficial  Ownership  Limitation.  Any  Series  1  Preferred  Shares  that  are 
ineligible to be converted into common shares due to the Beneficial Ownership Limitation, measured as of a given record 
date that applies for a shareholder meeting or ability to act by written consent, shall be deemed to be non-voting securities 
of the Company. Holders of Series 1 Preferred Shares are entitled to receive dividends (without regard to the Beneficial 
Ownership Limitation) on the same basis as the holders of common shares. The Company may not redeem the Series 1 
Preferred Shares.

The Company recorded the issuance of Series 1 Preferred Shares and corresponding cancellation of common shares at 
$7.61 per share, the estimated weighted average cost at which BVF acquired the common shares. The Series 1 Preferred 
Shares are recorded wholly as equity under ASC 480, with no bifurcation of conversion feature from the host contract, 
given that the Series 1 Preferred Shares cannot be cash settled and have no redemption features.

During the year ended December 31, 2018, BVF converted 1,852,000 Series 1 Preferred Shares in exchange for an equal 
number of common shares of the Company.

BVF was a related party of the Company prior to the closing of the exchange agreement, and continues to be a related 
party as of December 31, 2020 and thereafter. 

12. Concentrations of market risk:

(a) Foreign currency risk: 

At December 31, 2020, the Company had U.S. dollar denominated cash and cash equivalents and marketable securities of 
$161,847  (2019  –  $129,838)  and  Canadian  denominated  cash  and  cash  equivalents  and  marketable  securities  of 
CAD$19,282 (2019 – CAD$14,962).

The Company faces foreign currency exchange rate risk in part, as a result of entering into transactions denominated in 
currencies other than U.S. dollars, particularly those denominated in Canadian dollars. The Company also holds non-U.S. 
dollar denominated cash and cash equivalents, marketable securities, accounts receivable and accounts payable, which are 
denominated in Canadian dollars.

Changes in foreign currency exchange rates can create significant foreign exchange gains or losses to the Company. The 
Company’s  current  foreign  currency  risk  is  with  the  Canadian  dollar,  as  a  majority  of  non-U.S.  dollar  denominated 
expenses are denominated in Canadian dollars and a portion of cash and cash equivalents and marketable securities are 
held in Canadian dollars. The Company does not currently hedge its exposure and thus assumes the risk of future gains or 
losses on the amounts of Canadian dollars held.

91

(b) Interest Rate Risk:

At  December 31,  2020,  the  Company  had  cash  and  cash  equivalents  and  marketable  securities  of  $176,997.  The 
Company’s  interest  rate  risk  is  primarily  attributable  to  its  cash  and  cash  equivalents  and  marketable  securities.  The 
Company believes that it does not have any material exposure to changes in the fair value of these assets as a result of 
changes in interest rates due to the short term nature of cash and cash equivalents and marketable securities. The Company 
does not enter into investments for trading or speculative purposes and has not used any derivative financial instruments to 
manage interest rate exposure.

13. Collaboration agreements:

The Company has entered into a number of collaboration agreements under which it may have received non-refundable upfront 
payments.  Each arrangement is assessed in accordance with ASC 606 under the five-step model as described in note 3j. The 
Company  generally  recognizes  revenue  from  non-refundable  upfront  payments  over 
the 
performance obligation or period in which the underlying benefit is transferred to the customer. If non-refundable license fees 
have value to the customer on a standalone basis, separate from the undelivered performance obligations, they are recognized 
upon delivery. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of 
performance and related revenue recognition.

the  estimated 

term  of 

Research and development milestones in the Company’s collaboration agreements may include the following types of events:

•

•

•

completion of pre-clinical research and development work leading to selection of product candidates;

initiation of Phase 1, Phase 2 or Phase 3 clinical trials; and

achievement of certain other scientific, clinical data or development events.

Regulatory milestone payments may include the following types of events:

•

filing  of  regulatory  applications  for  marketing  approval  in  the  U.S.,  Europe  or  Japan,  including  investigational  new  drug 
applications and new drug applications; and

• marketing approval in a major market, such as the U.S., Europe or Japan.

Commercialization  milestone  payments  may  include  payments  triggered  by  annual  product  sales  that  achieve  pre-specified 
thresholds.

The  Company  evaluates  each  arrangement  that  includes  research  and  development  and  sales-based  milestone  payments  to 
determine  whether  the  milestones  are  considered  probable  of  being  reached  and  estimates  the  amount  to  be  included  in  the 
transaction price using the most likely amount method. Milestone payments that are not within the control of the Company are 
not considered probable of being achieved. If it is probable that a significant revenue reversal would not occur, the associated 
milestone value is included in the transaction price. The transaction price is then allocated to each performance obligation on a 
relative standalone selling price basis, for which the Company recognizes revenue as or when the performance obligations under 
the  contract  are  satisfied.  At  the  end  of  each  subsequent  reporting  period,  the  Company  re-evaluates  the  probability  of 
achievement of such milestones, and if necessary, adjusts its estimate of the overall transaction price.

Revenue was as follows for the years ended December 31, 2020 and 2019:

Neurocrine Biosciences:
    Recognition of the transaction price
    Research and development services
Flexion:
    Recognition of the transaction price
    Milestone payment
Total collaboration revenue

Year Ended December 31,

2020

2019

$

$

26,810  $
5,356   

—   
—   
32,166  $

2,881 
448 

3,000 
500 
6,829  

92

 
 
 
 
 
   
   
  
 
 
    
  
 
 
(a) Neurocrine Biosciences license and collaboration agreement: 

In December 2019, the Company entered into the Neurocrine Collaboration Agreement with Neurocrine Biosciences to 
establish a collaboration under which the parties will identify, research and develop sodium channel inhibitors. Pursuant to 
this  agreement,  the  Company  granted  an  exclusive  license  to  XEN901,  now  known  as  NBI-921352,  a  clinical  stage 
selective Nav1.6 sodium channel inhibitor for the treatment of epilepsy. The Company also granted an exclusive license to 
pre-clinical  compounds  for  development,  XEN393,  XPC’535  and  XPC’391  (collectively,  the  “DTCs”).  The  agreement 
also includes a two-year research collaboration to discover, identify and develop additional novel Nav1.6 and Nav1.2/1.6 
inhibitors (“Research Compounds”), with an option to extend for an additional year.

At execution of the agreement, Neurocrine Biosciences paid the Company an upfront fee of $50,000, which included a 
$30,000  payment  in  cash  and  a  $20,000  equity  investment  in  the  Company.  For  additional  information  regarding  the 
equity  investment,  refer  to  note  11a.    The  Company  is  eligible  to  receive  pre-commercial  and  commercial  milestone 
payments with respect to the licensed products totaling up to an additional $1,692,500, comprised of (a) up to $25,000 
upon the achievement of milestones related to Investigational New Drug (“IND”) or IND equivalent acceptance for NBI-
921352, with 55% of the amount in the form of an equity investment in the Company at a 15% premium to the Company's 
30-day volume weighted average price at that time, subject to Neurocrine Biosciences’ common share ownership of the 
Company being below 19.9%, (b) up to $1,067,500 in additional development and regulatory milestone payments related 
to  NBI-921352  and  other  licensed  Nav1.6  or  Nav1.2/1.6  inhibitor  products,  and  (c)  up  to  $600,000  in  additional  sales-
based milestone payments for multiple products. In addition, the Company is eligible to receive royalties on net sales in 
and  outside  the  U.S.,  ranging  from  (a)  for  NBI-921352,  a  low  double-digit  percentage  to  a  mid-teen  percentage  and  a 
high-single digit percentage to low double-digit percentage, respectively; (b) for DTCs, a high-single digit percentage to a 
low double-digit percentage and a mid-single digit percentage to a high-single digit percentage, respectively; and (c) for 
Research  Compounds,  a  mid-single  digit  percentage  to  a  high-single  digit  percentage  and  a  tiered  mid-single  digit 
percentage, respectively. Royalty rates are subject to customary reductions.  

The Company has an option to co-fund 50% of the development costs of NBI-921352 or another product candidate in the 
U.S., exercisable upon achievement of certain milestones, in exchange for increased U.S. royalties. The Company has not 
exercised this option as of December 31, 2020. 

The  Company  and  Neurocrine  Biosciences  will  collaborate  on  the  conduct  of  two  collaboration  programs:  (a)  a  joint 
research collaboration to discover, identify and preclinically develop Research Compounds (the “Research Program”) and 
(b)  a  collaborative  development  program  for  NBI-921352  and  two  DTCs  selected  by  the  joint  steering  committee  (the 
“Initial Development Program”). During the term of the Research Program and Initial Development Program, Neurocrine 
Biosciences will fund the Company for certain full-time employees and out-of-pocket expenses incurred by the Company.

The  agreement  includes  the  following  performance  obligations:  (i)  an  exclusive  license  to  NBI-921352  with  associated 
technology and know-how transfer, (ii) an exclusive license to the DTCs with associated know-how transfer, (iii) a license 
to Research  Compounds and  research  services  under  the  Research Program,  (iv)  development  services  under the  Initial 
Development  Program  for  NBI-921352,  and  (v)  development  services  under  the  Initial  Development  Program  for  the 
DTCs. The license to the Research Compounds and the research services under the Research Program are considered a 
single  performance  obligation  as  Neurocrine  Biosciences  cannot  benefit  from  such  a  license  on  its  own  or  from  other 
resources  commonly  available  in  the  industry,  without  the  corresponding  research  services  due  to  the  unique  and 
specialized  expertise  of  the  Company  that  is  not  readily  available  in  the  marketplace.  Given  the  current  development 
phase  of  the  Research  Compounds,  the  performance  obligation  and  related  revenue  has  been  linked  entirely  to  the 
performance of research services.

At execution of the agreement, the transaction price consisted of the $30,000 upfront consideration received in cash and a 
premium of $3,333 on the $20,000 equity investment in the Company measured at fair value on the date of issuance. The 
Company also considered the following elements in determining the overall transaction price:
• Under the arrangement, the Company is entitled to funding for certain full-time equivalent and external costs incurred 
by the Company under performance obligations (iii) and (iv). The arrangement consideration related to the services 
under performance obligations (iii) and (iv) to be performed on behalf of Neurocrine Biosciences were excluded from 
the  initial  transaction  price  allocation  because  the  consideration  and  performance  are  contingent  upon  Neurocrine 
Biosciences requesting performance of the services and these services are priced at an estimated fair value.

93

• None  of  the  at-risk  substantive  performance  milestones,  including  development,  regulatory  and  sales-based 
milestones, were included in the transaction price, as all milestone amounts are outside the control of the Company 
and contingent upon Neurocrine Biosciences’ efforts and success in future clinical trials. Any consideration related to 
sales-based royalties will be recognized when the related sales occur as they were determined to relate predominantly 
to the license granted to Neurocrine Biosciences and therefore have also been excluded from the transaction price. 
The Company will re-evaluate the transaction price at each reporting period and as uncertain events are resolved or 
other changes in circumstances occur.

The  total  transaction  price  of  $33,333  was  allocated  to  performance  obligation  (v)  based  on  its  estimated  standalone 
selling  price  determined  based  on  internal  development  plans  and  budget,  with  the  balance  allocated  to  performance 
obligations (i) and (ii) by the residual approach.  The residual approach was used as standalone selling prices, including 
market  data,  for  equivalent  performance  obligations  were  not  available.  The  allocation  of  the  transaction  price  requires 
significant  management  judgment. The  Company  allocated  the  transaction  price  as  follows:  $28,807  to  performance 
obligations  (i)  and  (ii)  which  were  delivered  and  transferred  concurrently  and   completed  as  of  December  2020,  and 
$4,526  to  performance  obligation  (v)  which  is  being  recognized  as  revenue  over  an  approximate  eight  quarter  period 
beginning  the  first  quarter  of  2020,  which  is  the  expected  period  to  complete  the  development  services.  The  Company 
measures proportional performance over time using an input method based on cost incurred relative to the total estimated 
costs for each of the identified obligations at each reporting period. Any changes to estimates will be recognized in the 
period in which they change as a cumulative catch up.       

During  the  year  ended  December 31,  2020,  the  Company  recognized  $32,166  of  revenue  which  comprised  of 
$25,926 associated with (i) the exclusive license to NBI-921352 and (ii) the exclusive license to the DTCs; $5,356 for the 
research and development services under (iii) the Research Program and (iv) the Initial Development Program for NBI-
921352; and $884 for (v) development services under the Initial Development Program for the DTCs.  As of December 
31, 2020, there is $1,346 of accounts receivable and $3,642 of deferred revenue related to the Neurocrine Collaboration 
Agreement.   

(b) Flexion definitive agreement:

In September 2019, the Company entered into an agreement with Flexion pursuant to which Flexion acquired all rights 
with respect to XEN402, and a related compound (collectively “XEN402”), including certain regulatory documentation, 
intellectual property rights, reports, data and all quantities of XEN402, now known as FX301, owned or controlled by the 
Company.  Flexion  paid  the  Company  upfront  consideration  of  $3,000  and  a  $500  milestone  payment  related  to  the 
initiation of the first GLP toxicology study which was included in the recognized transaction price at December 31, 2019. 
In  addition, the U.S.  Food  and  Drug  Administration  cleared  the  first  IND  for  FX301  in February  2021,  resulting  in  a 
$1,000 milestone payment due to the Company. Pursuant to terms of the agreement, the Company will also be eligible for 
various CMC, development and regulatory milestone payments of up to $7,000 through initiation of a Phase 2 proof-of-
concept clinical trial. Following successful proof-of-concept, the Company may be entitled to future clinical development 
and global regulatory approval milestone payments of up to $40,750, commercial milestone payments of up to $75,000, as 
well  as  future  royalties  ranging  from  mid-single  to  low-double  digit  percentages.  These  additional  amounts  will  be 
recognized as determinable.

(c) Genentech collaborative research and license agreement:

In  December  2011,  the  Company  entered  into  a  collaborative  research  and  license  agreement  with  Genentech  and  its 
affiliate, F. Hoffman-La Roche Ltd. to discover and develop selective oral inhibitors of Nav1.7 for the treatment of pain. 
Pursuant to this agreement, the Company granted Genentech a worldwide exclusive license to develop and commercialize 
compounds  directed  to  Nav1.7  and  products  incorporating  such  compounds  for  all  uses.  The  Company  also  granted 
Genentech  a  worldwide  non-exclusive  license  to  diagnostic  products  for  the  purpose  of  developing  or  commercializing 
such compounds.

Under  the  terms  of  the  agreement,  Genentech  paid  the  Company  an  upfront  fee  of  $10,000.  Genentech  also  provided 
funding to the Company for certain of the Company’s full-time equivalents performing the research collaboration plan, 
which concluded in December 2016. 

The  Company  received  and  recorded  a  $5,000  milestone  payment  in  2013  for  the  selection  of  a  compound  for 
development  and  an  $8,000  payment  in  2014  upon  the  approval  by  Health  Canada  of  the  clinical  trial  application.  No 
additional milestone payments or royalties have been received to date.

94

  
The  Company  is  eligible  to  receive  pre-commercial  and  commercial  milestone  payments  with  respect  to  the  licensed 
products  totaling  up  to  an  additional  $613,000,  comprised  of  up  to  $45,500  in  pre-clinical  and  clinical  milestone 
payments, up to $387,500 in regulatory milestone payments, and up to $180,000 in sales-based milestone payments for 
multiple  products  and  indications.  In  addition,  the  Company  is  eligible  to  receive  royalties  based  on  net  sales  of  the 
licensed  products,  which  range  from  a  mid  single-digit  percentage  to  ten  percent  for  small-molecule  inhibitors  for  the 
timeframe that such products are covered by the licensed patents and a low single-digit percentage thereafter until the date 
that  is  ten  years  after  first  commercial  sale  on  a  country-by-country  basis,  plus  a  low  single-digit  percentage  for  large-
molecule inhibitors of Nav1.7 for a period of ten years from first commercial sale on a country-by-country basis. The pre-
commercial and commercial milestone payments and royalties may be subject to reductions based on the period in which 
the  compound  that  is  selected  for  development  and  commercialization  was  initially  conceived.  If  the  compound  that  is 
selected  for  development  and  commercialization  was  conceived  after  December  21,  2019,  the  Company  will  not  be 
entitled to any pre-commercial or commercial milestone payments nor to any royalties.

At execution of the collaborative research and license agreement with Genentech, the transaction price included only the 
$10,000 upfront consideration received. None of the at-risk substantive performance milestones, including research and 
development and sales-based milestones, were included in the transaction price, as all milestone amounts are outside the 
control of the Company and contingent upon Genentech’s efforts and success in future clinical trials. Any consideration 
related  to  sales-based  royalties  will  be  recognized  when  the  related  sales  occur  as  they  were  determined  to  relate 
predominantly to the license granted to Genentech and therefore have also been excluded from the transaction price. The 
Company will continue to re-evaluate the transaction price in each reporting period and as uncertain events are resolved or 
other changes in circumstances occur.

The collaborative research and license agreement with Genentech was amended multiple times, in May 2015, November 
2015,  March  2016,  May  2017,  July  2018  and  September  2018,  to  either  extend  the  term  of  the  research  program  or  to 
provide  the  Company  with  greater  flexibility  in  developing  compounds  that  target  Nav1.6.  Pursuant  to  the  current 
amendment, the Company obtained a non-exclusive, irrevocable, perpetual, world-wide, sublicensable license under the 
know-how forming part of the Genentech intellectual property developed under the Nav1.7 collaboration that is necessary 
or useful to make, use, sell, offer for sale, and import compounds from the Company’s Nav1.6 program that are above a 
certain  potency  on  Nav1.7  and  were  conceived  prior  to  a  certain  date  and  products  containing  those  compounds.  The 
Company’s license from Genentech includes commercialization rights but the Company is restricted from developing or 
commercializing the Company’s Nav1.6 compounds below a certain potency on Nav1.7 and conceived prior to a certain 
date in the field of epilepsy and any of the Company’s Nav1.6 compounds conceived prior to a certain date, regardless of 
their potency on Nav1.7, in the field of pain. In exchange for the rights granted to the Company under this amendment, 
Genentech  is  eligible  to  receive  a  low  single-digit  percentage,  tiered  royalty  on  net  sales  of  the  Company’s  Nav1.6 
compounds conceived prior to a certain date, including XEN901, now known as NBI-921352, for a period of ten years 
from first commercial sale on a country-by-country basis. In accordance with the Neurocrine Collaboration Agreement, 
the  Company  remains  solely  responsible  for  all  payments  to  Genentech  with  respect  to  certain  Nav1.6  compounds, 
including  NBI-921352,  licensed  to  Neurocrine  Biosciences.    Pursuant  to  the  amendment,  Genentech  was  granted  a 
royalty-free, non-exclusive, world-wide license under the Company’s Nav1.6 intellectual property to make, use, sell, offer 
for sale and import compounds below a certain potency on Nav1.7 and products containing those compounds for all uses 
and indications except epilepsy. 

In  March  2014,  the  Company  entered  into  a  new  agreement  with  Genentech  for  pain  genetics,  which  focused  on 
identifying genetic targets associated with rare phenotypes where individuals have an inability to perceive pain or where 
individuals  have  non-precipitated  spontaneous  severe  pain.  Pursuant  to  the  terms  of  this  agreement,  any  intellectual 
property  arising  out  of  the  collaboration  is  jointly  owned  by  the  Company  and  Genentech.  The  Company  also  granted 
Genentech  a  time-limited,  exclusive  right  of  first  negotiation  on  a  target-by-target  basis  to  form  joint  drug  discovery 
collaborations. Under the terms of this agreement, Genentech paid an upfront payment of $1,500 and two $250 milestone 
payments related to the identification of novel pain targets in September 2015 and July 2017. Genentech’s time-limited, 
exclusive right of first negotiation, which was exercisable throughout the research term, expired at the same time as the 
agreement  in  March  2018.  Despite  such  termination,  the  Company  remains  eligible  for  up  to  an  additional  $1,500  in 
milestone payments.

Pursuant to the terms of the Company’s agreement with the Memorial University of Newfoundland, the Company must 
pay to the Memorial University of Newfoundland certain milestone payments, a single-digit percentage of net sales for 
pain products the Company sells directly and a single-digit percentage of royalties received for sales of pain products by 
Genentech or Flexion. 

95

14. Commitments and contingencies:

(a) Priority access agreement with Medpace Inc. (“Medpace”):

In August 2015, the Company entered into a priority access agreement with Medpace for the provision of certain clinical 
development  services,  under  which  the  Company  had  committed  to  using  Medpace  non-exclusively  for  clinical 
development services over the five year term of the agreement which ended in August 2020. The Company committed to 
$7,000 of services over the term of the agreement of which $3,349 of services have been received and $3,651 remains 
committed  as  of  December  31,  2020.  As  the  Company  did  not  meet  the  commitment  to  retain  Medpace  for  $7,000  of 
services prior to August 2020, the Company is required to provide Medpace the exclusive right to perform all subsequent 
outsourced  clinical  development  work  until  such  $7,000  commitment  has  been  satisfied,  subject  to  the  availability  of 
appropriate  Medpace  resources  and  reasonable  service  rates.  If  the  Company  decides  not  to  retain  Medpace  for  the 
provision of clinical development services, the Company may satisfy its obligations under the priority access agreement 
by  paying  Medpace  an  amount  equal  to  half  of  the  unsatisfied  portion.  The  Company  intends  to  continue  to  utilize 
Medpace  for  clinical  development  work  where  appropriate  in  order  to  fulfill  the  remaining  commitment;  therefore,  no 
liability  has  been  recognized  as  of  December  31,  2020  with  respect  to  the  unsatisfied  portion  under  the  priority  access 
agreement.  

(b) License, manufacture and supply agreement:

In March 2017, the Company entered into a license, manufacture and supply agreement with a pharmaceutical contract 
manufacturing  organization  for  the  access  and  use  of  certain  regulatory  documents  as  well  as  for  the  manufacture  and 
supply  of  clinical  and  commercial  drug  product  to  support  the  development  of  XEN007.  Under  the  terms  of  the 
agreement,  the  Company will  be  required  to  pay  a  low  single-digit  percentage  royalty  on  net  sales  of  any  products 
developed and commercialized under the agreement.

(c) Asset purchase agreement with 1st Order Pharmaceuticals, Inc. (“1st Order”):

In  April  2017,  the  Company  acquired  XEN1101  (previously  known  as  1OP2198)  from  1st  Order  pursuant  to  an  asset 
purchase agreement.  

In  August  2020,  the  Company  and  1st Order  amended  the  asset  purchase  agreement  to  amend  certain  definitions  in  the 
agreement and to modify the payment schedule for certain milestones. Future potential payments to 1st Order related to 
the  XEN1101  program  include  up  to  $1,200 in  clinical  development  milestones,  up  to  $6,000  in  regulatory  milestones, 
and  $500 in  other  milestones.  To  date,  the  Company  has  paid  $300 based  on  progress  against  these  milestones. There 
are no royalty obligations to 1st Order.   

(d) License agreement:

In  July  2017,  the  Company  entered  into  a  license  agreement  with  a  pharmaceutical  company  for  the  access  and  use  of 
certain  regulatory  documents  to  support  the  development  of  XEN007.   Future  potential  payments  include  $2,000  in 
clinical development milestones, up to $7,000 in regulatory milestones, plus a low-to-mid single-digit percentage royalty 
on net sales of any products developed and commercialized under the agreement. No amounts have been accrued to date 
based on the progress against these milestones. 

(e) Guarantees and indemnifications:

The Company has entered into license and research agreements with third parties that include indemnification provisions 
that  are  customary  in  the  industry.  These  indemnification  provisions  generally  require  the  Company  to  compensate  the 
other  party  for  certain  damages  and  costs  incurred  as  a  result  of  third  party  claims  or  damages  arising  from  these 
transactions.

The  maximum  amount  of  potential  future  indemnification  is  unlimited;  however,  the  Company  currently  holds 
commercial and product liability insurance. This insurance limits the Company’s exposure and may enable it to recover a 
portion  of any  future  amounts  paid.  Historically,  the  Company  has  not  made  any  indemnification  payments  under  such 
agreements and the Company believes that the fair value of these indemnification obligations is minimal. Accordingly, the 
Company has not recognized any liabilities relating to these obligations for any period presented.

96

15.

Income taxes: 

Income tax recovery varies from the amounts that would be computed by applying the expected Canadian federal and provincial 
statutory income tax rate of 27% (2019 – 27%) to loss before income taxes as shown in the following table:

Computed recoveries at Canadian federal and
   provincial tax rates
Change in valuation allowance
Investment tax credits earned
Tax attributes expired/utilized
Non-deductible expenditures
Other
Income tax recovery

Year Ended December 31,
2019
2020

 $

 $

(7,856)  $
7,821 
(1,689)   
764 
1,135 
(432)   
(257)  $

(11,237)
11,148 
(1,522)
678 
477 
433 
(23)

Income  tax  recovery  for  the  years  ended  December 31,  2020  and  2019  arose  from  the  operations  of  Xenon  Pharmaceuticals 
USA Inc., the Company’s wholly-owned subsidiary in the United States.

Deferred  income  tax  assets  and  liabilities  result  from  the  temporary  differences  between  the  amount  of  assets  and  liabilities 
recognized for financial statement and income tax purposes. The significant components of the Company’s net deferred income 
tax assets are as follows:

Scientific research and experimental development pool
Investment tax credits
Non-capital losses
Depreciable assets
Deferred financing fees
Deferred revenue
Other
Less - valuation allowance
Net deferred income tax assets

December 31,

2020

2019

 $

 $

29,580 
25,411 
35,803 
6,635 
1,689 
983 
533 

(100,111)   
 $

523 

 $

27,531 
24,384 
23,603 
5,983 
972 
8,223 
347 
(90,805)
238  

The realization of deferred income tax assets is dependent upon the generation of sufficient taxable income during future periods 
in which the temporary differences are expected to reverse. The valuation allowance is reviewed on a quarterly basis and if the 
assessment  of  the  “more  likely  than  not”  criteria  changes,  the  valuation  allowance  is  adjusted  accordingly.  A  full  valuation 
allowance continues to be applied against deferred income tax assets in Canada as the Company has assessed that the realization 
of such assets does not meet the “more likely than not” criteria. Deferred income tax assets recorded on the consolidated balance 
sheets as of December 31, 2020 and 2019 result from the temporary differences between the amounts of assets and liabilities 
recognized for financial statement and income tax purposes related to the operations of Xenon Pharmaceuticals USA Inc.

At  December 31,  2020,  the  Company  has  unclaimed  tax  deductions  for  scientific  research  and  experimental  development 
expenditures of $109,556 (2019 – $101,965) with no expiry.

At December 31, 2020, the Company has $24,311 (2019 – $22,992) of investment tax credits available to offset federal taxes 
payable and $7,738 (2019 – $7,675) of provincial tax credits available to offset provincial taxes payable in the future.

At  December 31,  2020,  the  Company  has  non-capital  losses,  net  of  uncertain  tax  positions,  carried  forward  for  tax  purposes, 
which are available to reduce taxable income of future years of approximately $132,604 (2019 – $87,417).

The investment tax credits and loss carry forwards expire over various years to 2040.

97

 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
As of December 31, 2020, the total amount of the Company’s unrecognized tax benefits of uncertain tax positions were $10,850 
(2019 – $10,850). If recognized in future periods, the unrecognized tax benefits would not affect the Company’s effective tax 
rate. The Company recognizes potential accrued interest and penalties related to unrecognized tax benefits within the income tax 
provision. Interest and penalties have not been accrued at December 31, 2020 as none would be owing on the unrecognized tax 
benefits due to the availability of non-capital losses to shelter any potential taxable income arising thereon. The Company does 
not currently expect any significant increases or decreases to these unrecognized tax benefits within 12 months of the reporting 
date.

The Company files income tax returns in Canada and the United States, the jurisdictions in which the Company believes that it 
is subject to tax. In jurisdictions in which the Company does not believe it is subject to tax and therefore does not file income 
tax  returns,  the  Company  can  provide  no  certainty  that  tax  authorities  in  those  jurisdictions  will  not  subject  one  or  more  tax 
years (since the inception of the Company) to examination. Further, while the statute of limitations in each jurisdiction where an 
income tax return has been filed generally limits the examination period, as a result of loss carry-forwards, the limitation period 
for examination generally does not expire until several years after the loss carry-forwards are utilized. Other than routine audits 
by  tax  authorities  for  tax  credits  and  tax  refunds  that  the  Company  claims,  the  Company  is  not  aware  of  any  other  material 
income tax examination currently in progress by any taxing jurisdiction. Tax years ranging from 2002 to 2019 remain subject to 
examinations in Canada and the United States.

Item 9.

Changes in and Disagreements With Accountants on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

Evaluation of disclosure controls and procedures. Our management, with the participation of our Chief Executive Officer and 
our Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures as of December 31, 2020. The term 
“disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other 
procedures of a company that are designed to ensure that information required to be disclosed by a company in the reports that it files 
or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s 
rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that 
information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and 
communicated to the company’s management, including its principal executive and principal financial officers, as appropriate to allow 
timely decisions regarding required disclosure.

Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only 
reasonable assurance of achieving their objectives and management necessarily applies its judgment in evaluating the cost-benefit 
relationship of possible controls and procedures. Based on the evaluation of our disclosure controls and procedures as of 
December 31, 2020, our Chief Executive Officer and our Chief Financial Officer concluded that, as of such date, our disclosure 
controls and procedures were, in design and operation, effective at the reasonable assurance level.

Management’s Annual Report on Internal Control over Financial Reporting. Our management, with the participation of our 
Chief Executive Officer and our Chief Financial Officer, is responsible for establishing and maintaining adequate internal control over 
our financial reporting, as such term is defined in Rule 13a-15(f) and Rule 15d-15(f) of the Securities Exchange Act of 1934. Our 
internal control over financial reporting is a process 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. Our internal 
control over financial reporting includes those policies and procedures that:

(i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions 

of our assets;

(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 our receipts and expenditures are being made only in 
accordance with authorizations of our management and directors; and

(iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our 

assets that could have a material effect on the financial statements.

98

   
The effectiveness of any system of internal control over financial reporting, including ours, is subject to inherent limitations, 

including the exercise of judgment in designing, implementing, operating, and evaluating the controls and procedures, and the 
inability to eliminate misconduct completely. Accordingly, any system of internal control over financial reporting, including ours, no 
matter how well designed and operated, can only provide reasonable, not absolute, assurances. 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. Management has assessed the effectiveness of our internal 
control over financial reporting as of December 31, 2020. In making its assessment, management used the criteria set forth by the 
Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control – Integrated Framework (2013) to 
evaluate the effectiveness of our internal control over financial reporting. Based on this assessment using those criteria, management 
has concluded that our internal control over financial reporting was effective as of December 31, 2020.

Changes in internal control over financial reporting. There was no change in our internal control over financial reporting 
identified in connection with the evaluation required by Rule 13a-15(d) and 15d-15(d) of the Exchange Act that occurred during the 
three months ended December 31, 2020 that has materially affected, or is reasonably likely to materially affect, our internal control 
over financial reporting.

Item 9B. Other Information

We have a written code of conduct that applies to all of our directors, officers and employees. A copy of the most up-to-date 

version of our code of conduct is available within the “Investors” section on our company website located at http://www.xenon-
pharma.com and on SEDAR at www.sedar.com.

99

PART III

Item 10. Directors, Executive Officers and Corporate Governance

The information required by Item 10 of Form 10-K is incorporated by reference to our Proxy Statement for the 2021 Annual 

Meeting of Shareholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2020. 

Item 11.

Executive Compensation

The information required by Item 11 of Form 10-K is incorporated by reference to our Proxy Statement for the 2021 Annual 

Meeting of Shareholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2020.

Item 12.

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

The information required by Item 12 of Form 10-K is incorporated by reference to our Proxy Statement for the 2021 Annual 

Meeting of Shareholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2020.

Item 13. Certain Relationships and Related Transactions, and Director Independence

The information required by Item 13 of Form 10-K is incorporated by reference to our Proxy Statement for the 2021 Annual 

Meeting of Shareholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2020.

Item 14.

Principal Accounting Fees and Services

The information required by Item 14 of Form 10-K is incorporated by reference to our Proxy Statement for the 2021 Annual 

Meeting of Shareholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2020.

100

Item 15.

Exhibits, Financial Statement Schedules

PART IV

(a)(1) Financial Statements — The financial statements included in Item 8 are filed as part of this Annual Report on Form 10-K.

(a)(2) Financial Statement Schedules — All schedules have been omitted because they are not applicable or required, or the 

information required to be set forth therein is included in the consolidated Financial Statements or notes thereto included in Item 8 of 
this Annual Report on Form 10-K.

(a)(3) Exhibits — The exhibits required by Item 601 of Regulation S-K are listed in paragraph (b) below.

(b) Exhibits — The exhibits listed in the table below are filed herewith or are incorporated by reference to exhibits previously 

filed with the SEC.

Description of Document

Articles of the Company.

Form

10-Q

001-36687

Incorporated by Reference
File No.

Exhibit

Filing Date

Articles of Amendment to the Articles of the Company, 
creating the Series 1 Preferred Shares.

8-K

001-36687

Amended and Restated By-laws of the Company.

10-Q

001-36687

Form of Common Share Certificate.

S-1/A

333-198666

Specimen Series 1 Preferred Share Certificate.

8-K

001-36687

3.1

3.1

3.2

4.1

4.1

December 15, 
2014

March 28, 
2018

December 15, 
2014

October 6, 
2014

March 28, 
2018

Warrant to Purchase Shares, dated August 3, 2018, by and 
between Xenon Pharmaceuticals Inc. and Silicon Valley 
Bank.

Description of Securities.

Collaborative Research and License Agreement, dated 
December 22, 2011, by and among the Company, 
Genentech, Inc. and F. Hoffmann-La Roche Ltd, as 
amended.

8-K

001-36687

4.1

August 7, 2018

10-K

001-36687

S-1/A

333-198666

4.4

10.3

March 9, 2020

October 6, 
2014

Stock Option Plan, as amended, and form of option 
agreement thereunder.

S-1/A

333-198666

10.7

October 6, 
2014

Amended and Restated 2014 Equity Incentive Plan and form 
of share option agreement used thereunder.

8-K

001-36687

10.1

June 3, 2020

Form of Share Option Agreement, as amended, under the 
Amended and Restated 2014 Equity Incentive Plan.

Lease, dated as of 2001, by and between the Company and 
Discovery Parks Incorporated, as amended through July 1, 
2014.

Form of Director and Executive Officer Indemnification 
Agreement.

Amendment #4, dated May 13, 2015, to the Collaborative 
Research and License Agreement, dated December 22, 2011, 
by and among the Company, Genentech, Inc. and F. 
Hoffman-La Roche Ltd, as amended.

S-1

333-198666

10.14

September 10, 
2014

S-1/A

333-198666

10.15

10-Q

001-36687

10.1

October 6, 
2014

August 13, 
2015

Lease Modification Agreement, effective July 1, 2015, by 
and between the Company and Redstone Enterprises Ltd.

10-Q

001-36687

10.1

November 10, 
2015

101

Exhibit
Number

3.1

3.1A

3.2

4.1

4.2

4.3

4.4

10.1†

10.2#

10.3#

10.4#

10.5

10.6#

10.7†

10.8

Exhibit
Number

10.9

10.10†

10.11†

10.12†

10.13†

10.14

10.15†

10.16

10.17†

10.18#

10.19#

10.20#

10.21#

10.22#

10.23#

Description of Document

Lease Modification Agreement, effective December 1, 2015, 
by and between the Company and Redstone Enterprises Ltd.

Amendment #5, dated November 19, 2015, to the 
Collaborative Research and License Agreement, dated 
December 22, 2011, by and among the Company, 
Genentech, Inc. and F. Hoffman-La Roche Ltd, as amended.

Amendment #6, dated March 9, 2016, to the Collaborative 
Research and License Agreement, dated December 22, 2011, 
by and among the Company, Genentech, Inc. and F. 
Hoffman-La Roche Ltd, as amended.

Letter Agreement to Amendment #4, dated May 8, 2017, to 
the Collaborative Research and License Agreement, dated 
December 22, 2011, by and among the Company, 
Genentech, Inc. and F. Hoffman-La Roche Ltd, as amended.

Asset Purchase Agreement, dated April 25, 2017, by and 
between the Company and 1st Order Pharmaceuticals, Inc.

Exchange Agreement, dated March 23, 2018, by and among 
the Company and the shareholders listed in Schedule B 
thereto.

Letter Amendment #7, dated July 25, 2018, to the 
Collaborative Research and License Agreement, dated 
December 22, 2011, by and among the Company, 
Genentech, Inc. and F. Hoffmann-La Roche Ltd, as 
amended.  

Milestone and Royalty Buy-Out Agreement, dated 
September 7, 2018, by and among Xenon Pharmaceuticals 
Inc., Valeant Pharmaceuticals Ireland Limited and Valeant 
Pharmaceuticals Luxembourg S.a.r.l.

Amended and Restated Amendment #7, dated September 27, 
2018, to the Collaborative Research and License Agreement, 
dated December 22, 2011, by and among the Company, 
Genentech, Inc. and F. Hoffmann-La Roche Ltd, as 
amended.

Amended and Restated Employment Agreement, dated 
March 19, 2019, by and between the Company and Simon 
Pimstone.

Amended and Restated Employment Agreement, dated 
March 19, 2019, by and between the Company and Ian 
Mortimer.

Amended and Restated Employment Agreement, dated 
March 19, 2019, by and between the Company and Ernesto 
Aycardi.

Amended and Restated Employment Agreement, dated 
March 19, 2019, by and between the Company and Robin 
Sherrington.

Amended and Restated Employment Agreement, dated 
March 20, 2019, by and between the Company and James 
Empfield.

Form

10-K

Incorporated by Reference
File No.

Exhibit

Filing Date

001-36687

10.19 March 8, 2016

10-K

001-36687

10.20 March 8, 2016

10-Q

001-36687

10.1 May 10, 2016

10-Q

001-36687

10.1

August 3, 2017

10-Q

001-36687

10.2

August 3, 2017

8-K

001-36687

10.1

March 28, 
2018

10-Q

001-36687

10.3

August 7, 2018

8-K

001-36687

10.1

September 11, 
2018

10-Q

001-36687

10.5

November 6, 
2018

8-K

001-36687

10.1

8-K

001-36687

10.2

8-K

001-36687

10.3

March 25, 
2019

March 25, 
2019

March 25, 
2019

10-K

001-36687

10.24 March 9, 2020

10-K

001-36687

10.25 March 9, 2020

Employment Agreement, dated July 17, 2020, by and 
between the Company and Christopher Von Seggern.

10-Q

001-36687

10.3

November 5, 
2020

102

Exhibit
Number

10.24#

10.25#

10.26#

10.27#

10.28††

10.29

10.30††

10.31

10.32††

10.33

21.1

23.1

24.1

31.1

31.2

32.1*

32.2*

101.INS

101.SCH

101.CAL

101.DEF

Filing Date

January 14, 
2021

January 14, 
2021

January 14, 
2021

September 10, 
2019

December 2, 
2019

December 2, 
2019

Description of Document

Employment Agreement, dated January 13, 2021, by and 
between the Company and Ian Mortimer.

Employment Agreement, dated January 13, 2021, by and 
between the Company and Simon Pimstone.

Employment Agreement, dated January 13, 2021, by and 
between the Company and Sherry Aulin.

Form

8-K

Incorporated by Reference
File No.

Exhibit

001-36687

10.2

8-K

001-36687

10.3

8-K

001-36687

10.4

2019 Inducement Equity Incentive Plan and related form of 
share option agreement.

8-K

001-36687

10.1

License and Collaboration Agreement, dated as of December 
2, 2019, by and between Xenon Pharmaceuticals Inc. and 
Neurocrine Biosciences, Inc.

Share Purchase Agreement, dated as of December 2, 2019, 
by and between Xenon Pharmaceuticals Inc. and Neurocrine 
Biosciences, Inc.

Amendment No. 1 to Asset Purchase Agreement, dated 
August 4, 2020, by and between the Company and 1st Order 
Pharmaceuticals Inc.

At-the-Market Equity Offering Sales Agreement dated as of 
August 6, 2020, by and among Xenon Pharmaceuticals Inc., 
Jefferies LLC and Stifel, Nicolaus & Company, 
Incorporated.

Amendment #1, dated January 13, 2021, to the License and 
Collaboration Agreement, dated December 2, 2019, by and 
between Xenon Pharmaceuticals Inc. and Neurocrine 
Biosciences, Inc.

Lease Modification Agreement, effective October 5, 2020, 
by and between the Company and Redstone Enterprises Ltd.

8-K

001-36687

10.1

8-K

001-36687

10.2

10-Q

001-36687

10.2

August 6, 2020

8-K

001-36687

1.1

August 6, 2020

8-K

001-36687

10.1

January 14, 
2021

List of Subsidiaries of the Company.

10-K

001-36687

21.1 March 8, 2017

Consent of KPMG LLP, Independent Registered Public 
Accounting Firm.

Powers of Attorney (contained on signature page).

Rule 13a-14(a) / 15d-14(a) Certification of Principal 
Executive Officer

Rule 13a-14(a) / 15d-14(a) Certification of Principal 
Financial Officer

Section 1350 Certification of Principal Executive Officer

Section 1350 Certification of Principal Financial Officer

Inline XBRL Instance Document – the instance document 
does not appear in the Interactive Data File because XBRL 
tags are embedded within the Inline XBRL document

Inline XBRL Taxonomy Extension Schema Document

Inline XBRL Taxonomy Extension Calculation Linkbase 
Document

Inline XBRL Taxonomy Extension Definition Linkbase 
Document

103

Exhibit
Number

101.LAB

101.PRE

104

Description of Document

Form

Incorporated by Reference
File No.

Exhibit

Filing Date

Inline XBRL Taxonomy Extension Label Linkbase 
Document

Inline XBRL Taxonomy Extension Presentation Linkbase 
Document

Cover Page Interactive Data File (embedded within the 
Inline XBRL document)

† Confidential treatment has been granted with respect to certain portions of this exhibit. Omitted portions have been filed 

separately with the Securities and Exchange Commission.

†† Portions of this exhibit have been omitted in accordance with Item 601(b)(10) of Regulation S-K because they are not material and 

#

*

would likely cause competitive harm to the registrant if disclosed.

Indicates management contract or compensatory plan.

The Certifications attached as Exhibits 32.1 and 32.2 that accompany this Annual Report on Form 10-K are not deemed filed with 
the Securities and Exchange Commission and are not to be incorporated by reference into any filing of Xenon Pharmaceuticals 
Inc. under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, whether made before or 
after the date of this Form 10-K, irrespective of any general incorporation language contained in such filing.

Item 16.

Form 10-K Summary

Not applicable.

104

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.

Dated: March 1, 2021

  XENON PHARMACEUTICALS INC.

SIGNATURES

By:   /s/ Simon Pimstone 
  Simon Pimstone
  Chief Executive Officer

POWER OF ATTORNEY

Each person whose signature appears below hereby constitutes and appoints Simon Pimstone and Ian Mortimer, and each of them severally, as 
his or her true and lawful attorneys-in-fact and agents, with full power to act without the other and with full power of substitution and resubstitution, 
for him or her and in his or her name, place and stead, in any and all capacities (including his or her capacity as a director and/or officer of Xenon 
Pharmaceuticals Inc.) to sign any and all amendments and supplements to this report, and any and all other instruments necessary or incidental in 
connection herewith, and to file the same, with all exhibits thereto, and all other documents in connection therewith, with the Commission.

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.

Signature

/s/ Simon Pimstone

Simon Pimstone

/s/ Ian Mortimer

Ian Mortimer

/s/ Michael Tarnow

Michael Tarnow

/s/ Mohammad Azab

Mohammad Azab

/s/ Clarissa Desjardins

Clarissa Desjardins

/s/ Steven Gannon

Steven Gannon

/s/ Michael Hayden

Michael Hayden

/s/ Frank Holler

Frank Holler

/s/ Patrick Machado

Patrick Machado

/s/ Gary Patou

Gary Patou

/s/ Dawn Svoronos

Dawn Svoronos

Title

Chief Executive Officer (Principal Executive 
Officer)

President and Chief Financial Officer (Principal 
Financial and Accounting Officer)

Date

March 1, 2021

March 1, 2021

Chair of the Board of Directors

March 1, 2021

Director

Director

Director

Director

Director

Director

Director

Director

105

March 1, 2021

March 1, 2021

March 1, 2021

March 1, 2021

March 1, 2021

March 1, 2021

March 1, 2021

March 1, 2021