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Xenon Pharmaceuticals

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FY2017 Annual Report · Xenon Pharmaceuticals
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XENON PHARMACEUTICALS INC. 

2017 ANNUAL REPORT 

  
  
  
 
To Our Shareholders: 

Reflecting upon this past year, we recognize that although Xenon encountered challenges – such 
as not meeting the endpoints in both a proprietary and a partnered clinical trial – these events 
presented the opportunity to sharpen our focus on advancing novel anti-epileptic drugs (or 
AEDs) and other therapies to address neurological diseases. Today, we are highly encouraged by 
the progress we have made in expanding and advancing our proprietary pipeline. Xenon is at an 
exciting juncture with a number of key milestone opportunities expected in the near-term. 

Product Pipeline

XEN1101
We have made significant headway advancing XEN1101, a novel Kv7 potassium channel opener 
being developed for the treatment of epilepsy. In October 2017, we initiated a Phase 1 clinical 
trial in healthy volunteers. The XEN1101 Phase 1 clinical trial includes a pharmacodynamic 
read-out from a transcranial magnetic stimulation (TMS) study, designed to assess activity in the 
target CNS tissue. We are looking forward to presenting interim Phase 1 results at a scientific 
meeting in Europe in May 2018. The release of the complete Phase 1 results, including the Phase 
1b blinded, cross-over TMS data, is expected in the second half of 2018. We anticipate initiating 
a Phase 2 clinical trial evaluating XEN1101’s efficacy as a treatment for adult focal seizures by 
year end. We are also exploring a parallel plan to advance XEN1101 into rare, pediatric forms of 
epilepsy. 

XEN901
We are equally excited about the progress we are making with XEN901, a novel, potent, highly 
selective Nav1.6 sodium channel inhibitor being developed for the treatment of epilepsy. In 
February 2018, we initiated a Phase 1 clinical trial in healthy volunteers. A read-out of results is 
anticipated in the second half of 2018, followed by a Phase 2 clinical trial evaluating XEN901’s 
efficacy as a treatment for adult focal seizures. We are also exploring a parallel plan to advance 
XEN901 into rare, pediatric forms of epilepsy. 

XEN007
In March 2018, we announced the addition of XEN007 (active ingredient flunarizine), a CNS-
acting calcium channel blocker, to our pipeline. We have received Orphan Drug Designation 
from the U.S. Food and Drug Administration for XEN007 for the treatment of hemiplegic 
migraine, which is a rare and debilitating neurological disorder. In addition, we have entered into 
key agreements giving us access to regulatory files and manufacturing support to potentially 
enable the accelerated clinical development of XEN007 directly into a Phase 2 clinical trial. 
Taking into account feedback from our strong network of key opinion leaders and prominent 
clinicians, we are currently examining various development strategies for XEN007, including 
potential partnerships models. 

Discovery Stage Programs 
Within our preclinical discovery team, we continue to build upon the knowledge amassed from 
our clinical-stage products, and we are doing extensive work with ion channel drug targets to 
advance promising neurology candidates. In addition to working on Nav1.6 back-up compounds 
with unique chemistries for our XEN901 program, we are exploring the benefits of a 
Nav1.6/Nav1.2 dual-acting inhibitor program that has the potential to be another unique and 
differentiated mechanism for the treatment of epilepsy. In addition, we are leveraging our 
understanding of the underlying genetics of severe childhood epilepsies to potentially develop a 
Nav1.1 potentiator. These discovery-stage programs support our goal to build an industry-
leading pipeline of highly differentiated and mechanistically driven epilepsy treatments and other 
CNS therapies. 

Partnered Program 

We have an ongoing collaboration with Genentech, a member of the Roche Group, which is 
focused on developing novel inhibitors of Nav1.7 for the treatment of pain. Genentech has 
completed a Phase 1 clinical trial for GDC-0310, which is an oral, selective Nav1.7 small-
molecule inhibitor developed for the potential treatment of pain. Guidance around the future 
clinical development of GDC-0310 will be updated once ongoing pre-clinical studies are 
completed and the final results are analyzed by Genentech. 

Looking Forward

We are excited that this year will hold a number of key milestone opportunities for Xenon, 
including important clinical data results from our XEN1101 and XEN901 epilepsy programs.  

We intend to advance and expand our proprietary pipeline of novel CNS-focused product clinical 
candidates, through both our internal research efforts and our ongoing assessment of promising 
external product opportunities.(cid:3)Within our preclinical discovery team, we continue to build upon 
the knowledge amassed from these clinical candidates and conduct extensive work with ion 
channel drug targets to advance promising neurology candidates. We will continue to operate 
efficiently while strategically managing our resources and cash runway. 

We greatly appreciate the continued support of our shareholders and recognize the efforts from 
our Board and employees to execute upon our strategy. We look forward to keeping you apprised 
of our continued progress. 

/s/ Michael M. Tarnow 

/s/ Simon N. Pimstone 

Michael M. Tarnow 
Board Chair

Simon N. Pimstone  
Chief Executive Officer 

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. (cid:3)

(This page intentionally left blank) 

os

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, 2017

or
(cid:4) 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)

98-0661854
(I.R.S. Employer
Identification Number)

200 – 3650 Gilmore Way
Burnaby, British Columbia V5G 4W8
Canada
(Address of Principal Executive Offices, including 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, no par value per share

Name of 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  (cid:4)    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  (cid:4)    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  (cid:4)

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be 
submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant 
was required to submit and post such files).    Yes  ⌧    No   (cid:4)

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405) is not contained herein, and will not be contained, to the best of 
the registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.   ⌧

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

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

  (cid:4)  
  (cid:4)  

Accelerated filer
Smaller reporting company
Emerging growth company

  (cid:4)
  ⌧
⌧

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised 
financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ⌧
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Securities Exchange Act of 1934).    Yes  (cid:4)    No   ⌧

The aggregate market value of the voting and non-voting common shares held by non-affiliates of the registrant, based on the closing sale price of the registrant’s 
common shares on the last business day of its most recently completed second fiscal quarter, as reported on The NASDAQ Global Market, was approximately $43.4 
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 outstanding common shares of the registrant, no par value per share, as of March 2, 2018 was 18,002,499.

Portions of the registrant’s definitive Proxy Statement to be filed with the Securities and Exchange Commission in connection with the registrant’s 2018 Annual 
Meeting of Shareholders, which will be filed subsequent to the date hereof, are incorporated by reference into Part III of this Form 10-K. 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, 2017.

DOCUMENTS INCORPORATED BY REFERENCE 

 
 
 
 
 
 
 
 
 
XENON PHARMACEUTICALS INC.

FORM 10-K

For the Fiscal Year Ended December 31, 2017

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.................................................................................................................................................................................

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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:

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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;

our ability to achieve profitability;

our ability to obtain funding for our operations, including research funding;

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 independently;

our commercialization, marketing and manufacturing capabilities and strategy;

our ability to discover genes and 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;

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.

1

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.

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.

Item 1.

Business

Overview

We are a clinical stage biopharmaceutical company focused on developing innovative therapeutics to improve the lives of 
patients with neurological disorders. Building upon our extensive knowledge of human genetics and diseases caused by mutations in 
ion channels, known as channelopathies, we are advancing a novel product pipeline of central nervous system, or CNS, therapies to 
address areas of high unmet medical need, such as epilepsy and pain. 

To date, our pharmaceutical collaborations have generated in aggregate over $160.0 million in non-equity funding with the 
potential to provide us with future milestone payments, as well as royalties on product sales. Our current pharmaceutical partners 
include Genentech, a member of the Roche Group, and Merck & Co., Inc., or Merck (through its affiliate, Essex Chemie AG).

Our clinical development pipeline includes:

(cid:129)

(cid:129)

(cid:129)

XEN1101 is a Kv7 potassium channel opener being developed for the treatment of epilepsy including: treatment-resistant 
adult and pediatric focal seizures; rare, pediatric forms of epilepsy, such as EIEE7, an early infantile epileptic 
encephalopathy associated with mutations in the KCNQ2 gene that cause loss-of-function in the Kv7.2 potassium channel; 
and potentially other neurological disorders. In October 2017, we initiated a randomized, double-blind, placebo-controlled 
Phase 1 clinical trial to evaluate the safety, tolerability and pharmacokinetics of both single ascending doses, or SAD, and 
multiple ascending doses, or MAD, of XEN1101 in healthy subjects. The XEN1101 Phase 1 clinical trial includes a 
pharmacodynamic biomarker read-out from a transcranial magnetic stimulation, or TMS, study, designed to assess 
XEN1101’s ability and potency to modulate cortical excitability, thereby demonstrating activity in the target CNS tissue. 
We expect to present interim Phase 1 results in May 2018. The release of the complete Phase 1 results, including the 
Phase 1b TMS data, is anticipated in the second half of 2018. We anticipate initiating a Phase 2 proof-of-concept trial 
evaluating XEN1101’s efficacy as a treatment for adult focal seizures by year end. We also intends to explore a parallel 
plan to advance XEN1101 into rare, pediatric forms of epilepsy as soon as feasible thereafter;

XEN901 is a potent, highly selective Nav1.6 sodium channel inhibitor being developed for the treatment of epilepsy 
including treatment resistant adult and pediatric focal seizures, as well as rare, pediatric forms of epilepsy, such as EIEE13, 
an early infantile epileptic encephalopathy due to gain-of-function mutations in the SCN8A gene that encodes the Nav1.6 
sodium channel. In February 2018, we initiated a randomized, double-blind, placebo-controlled Phase 1 clinical trial to 
evaluate XEN901’s safety, tolerability and pharmacokinetics in both SAD and MAD cohorts of approximately 64 healthy 
subjects in total. Upon completion of the Phase 1 clinical trial, a read-out of results is anticipated in the second half of 
2018, followed by a Phase 2 proof-of-concept trial evaluating XEN901’s efficacy as a treatment for adult focal seizures. 
We also intend to pursue a parallel plan to advance XEN901 into rare, pediatric forms of epilepsy as soon as feasible 
thereafter;

We have identified an additional clinical stage, ion channel program, XEN007 (active ingredient flunarizine), to expand 
our existing neurology-focused product pipeline. XEN007 is a CNS-acting calcium channel blocker that directly 
modulates Cav2.1, which is a critical calcium channel implicated in the pathophysiology of hemiplegic migraine, or HM, 
a rare and debilitating neurological disorder afflicting approximately 60,000 people in the U.S. Flunarizine has been used 
outside of the U.S. in the prevention of chronic migraine and has been reported to have clinical benefit in HM case studies. 
Xenon’s clinical development plans include a proposed strategy to develop XEN007 as the first treatment specifically 
approved for HM anywhere in the world. We have received Orphan Drug Designation from the U.S. Food and Drug 
Administration, or FDA, for XEN007 for the treatment of HM. In addition, we have entered into key agreements in order 
to access regulatory files and manufacturing support to potentially enable the accelerated clinical development of XEN007 
directly into a Phase 2 clinical trial. We are currently examining various development strategies for XEN007 with key 
opinion leaders and leading clinicians, as well as exploring options for potential partnerships for this program; and

2

(cid:129)

We have an ongoing collaboration with Genentech focused on developing novel inhibitors of Nav1.7 for the treatment of 
pain. Genentech has completed a Phase 1 clinical trial for GDC-0310, which is an oral, selective Nav1.7 small-molecule 
inhibitor developed for the potential treatment of pain. Guidance around the future clinical development of GDC-0310 
will be updated once ongoing pre-clinical studies are completed and the final results are analyzed by Genentech.

Our Strategy

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

innovative CNS therapeutics, including novel, selective ion channel modulators. We intend to expand our pipeline with therapeutic 
candidates from our internal research efforts, such as XEN901, and through the acquisition or in-licensing of other technologies or 
product candidates, such as XEN1101.

Our strategy includes:

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Focusing on orphan and niche disease market opportunities that we can independently develop and commercialize 
ourselves. 

Selectively establishing additional partnerships enabling us to access large commercial indications while leveraging the 
benefits of those collaborations to expand our internal capabilities. 

Further leveraging our discovery platform and insights into disease biology to identify novel targets and additional 
product candidates.

A significant focus of our discovery efforts has been on human channelopathies, enabling us to develop strong capabilities in 

small molecule ion channel drug discovery. Our ion channel discovery capability is founded upon our understanding of the genetics of 
channelopathies combined with our proprietary biology and medicinal chemistry assets and know-how. We, along with our 
collaborators at Genentech, identified new binding sites on ion channels which, in turn, led to the discovery of highly-selective 
voltage-gated sodium channel inhibitors, which may have safety and efficacy advantages over non-selective sodium channel 
inhibitors.

While the pharmaceutical industry has shown significant interest in channelopathies, a general inability to target ion channels 

selectively with a pharmaceutical agent has been a limitation to the development of effective therapeutics. We believe we have 
developed a core competence in developing highly-selective small-molecule ion channel inhibitors, and we believe we can use this 
know-how to develop a pipeline of novel ion channel inhibitors for diseases in areas of high unmet medical need.

3

Our Pipeline

Our pipeline is summarized in the following figure, which shows our own proprietary product candidates and our partnered pain 

program:

Our Product Candidates

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

We are developing XEN1101, a Kv7 potassium channel opener, for the treatment of epilepsy including: treatment-resistant adult 

and pediatric focal seizures; rare pediatric forms of epilepsy, such as EIEE7, an early infantile epileptic encephalopathy associated 
with mutations in the KCNQ2 gene that cause loss-of-function in the Kv7.2 potassium channel; as well as 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, see “—Collaborations, Commercial and License 
Agreements” below.

The Kv7 potassium channel opener mechanism has been clinically validated as an effective adjunctive treatment for treatment-

resistant focal seizures as demonstrated with ezogabine, an earlier generation Kv7 opener. XEN1101’s unique composition is 
chemically designed to improve upon potency, selectivity and PK of ezogabine, and is not expected to have ezogabine’s composition-
specific skin and eye pigmentary issues.

In addition to XEN1101’s strong pre-clinical data, and the clinical validation from the use of ezogabine, there is strong human 

genetic validation to support the use of XEN1101 as a potential treatment for epilepsy. The KCNQ2 gene encodes for the Kv7.2 
voltage-gated potassium channel. Loss-of-function missense mutations in KCNQ2 can cause an extremely severe epilepsy disorder 
characterized by multiple, daily, treatment-resistant seizures often presenting within the first week of life. This human genetic 
validation further underpins the important role KCNQ2 plays in limiting the hyper-excitatory state of the brain and as a target for the 
prevention of seizures in humans.

4

Clinical Development

In October 2017, we initiated a randomized, double-blind, placebo-controlled Phase 1 clinical trial to evaluate XEN1101’s 
safety, tolerability and pharmacokinetics in both SAD and MAD cohorts of healthy subjects. The XEN1101 Phase 1 clinical trial 
includes a pharmacodynamic biomarker read-out from a TMS study, designed to assess XEN1101’s ability and potency to modulate 
cortical excitability, thereby demonstrating activity in the target CNS tissue. Xenon has completed a Phase 1a pilot TMS study in 8 
healthy subjects and has now begun a double-blind, placebo-controlled, randomized cross-over Phase 1b TMS study in 15 healthy 
subjects.

Xenon expects to present interim Phase 1 results – including preliminary pharmacokinetic, tolerability and safety data from 42 
subjects, along with a read-out from the Phase 1a pilot TMS study – at the 14th EILAT Conference on New Antiepileptic Drugs and 
Devices to be held in Madrid, Spain in May 2018. The release of the complete Phase 1 results, including the Phase 1b TMS data, is 
anticipated in the second half of 2018. Xenon anticipates initiating a Phase 2 proof-of-concept trial evaluating XEN1101’s efficacy as 
a treatment for adult focal seizures by year end. Xenon also intends to explore a parallel plan to advance XEN1101 into rare, pediatric 
forms of epilepsy as soon as feasible thereafter.

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 secondarily 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 epilepsy patients with refractory seizures.

About Early Infantile Epileptic Encephalopathy (EIEE7)

Mutations in the KCNQ2 gene result in loss-of-function in the Kv7.2 potassium channel that can cause a rare, extremely severe, 

single-gene epilepsy disorder known as EIEE7 that typically presents with seizures within the first week of life. These seizures can 
occur multiple times a day and are often difficult to treat. Typically, the seizures are associated with abnormal brain wave patterns on 
EEG. While the seizures in EIEE7 often resolve within months to years, many children sustain some degree of permanent 
developmental impairment involving one or more domains (motor, social, language, cognition). This can range from mild to severe 
depending on a number of different factors. Some children may also have autistic features. 

XEN901, A Selective Nav1.6 Sodium Channel Inhibitor for the Treatment of Epilepsy

We are developing XEN901, a potent, highly selective Nav1.6 sodium channel inhibitor, for the treatment of epilepsy, including 

treatment resistant adult and pediatric focal seizures, as well as rare, pediatric forms of epilepsy, such as EIEE13, an early infantile 
epileptic encephalopathy associated with gain-of-function mutations in the SCN8A gene, which encodes the Nav1.6 sodium channel. 
By selectively targeting Nav1.6, it is anticipated that XEN901 may achieve efficacy conferred by this well-validated epilepsy target, 
but with a potentially improved therapeutic index compared with currently available non-selective sodium channel inhibitors. 

There is strong human genetic validation supporting the rationale for treating epilepsy by blocking the Nav1.6 sodium channel. 

Nav1.6 is the most highly expressed sodium channel in the excitatory pathways in the CNS. When mutations in the SCN8A gene 
result in a gain of function in the Nav1.6 sodium channel, children can present with a very severe form of epilepsy. This early infantile 
epileptic encephalopathy is known as EIEE13. We have examined XEN901 in a pre-clinical model of genetically defined epilepsy as 
well as models representative of focal seizures. These studies showed that XEN901 is efficacious against seizures in both an SCN8A 
(Nav1.6) gain-of-function model, which is designed to be predictive of the pediatric genetic epilepsy EIEE13, and in the maximal 
electroshock seizure, or MES, model, which is designed to be predictive of adult focal seizures. When compared to phenytoin in both 
the SCN8A and MES models, XEN901 achieved the same degree of efficacy as phenytoin at one thousand fold lower brain exposures. 
XEN901 also was observed to have an improved therapeutic index relative to phenytoin as assessed by tests of rodent behavior and 
motor impairment.

5

Clinical Development

In February 2018, we initiated a randomized, double-blind, placebo-controlled Phase 1 clinical trial to evaluate XEN901’s 

safety, tolerability and pharmacokinetics in both SAD and MAD cohorts of approximately 64 healthy subjects in total. Upon 
completion of the Phase 1 clinical trial, a read-out of results is anticipated in the second half of 2018, followed by a Phase 2 proof-of-
concept trial evaluating XEN901’s efficacy as a treatment for adult focal seizures. We also intend to pursue a parallel plan to advance 
XEN901 into rare, pediatric forms of epilepsy as soon as feasible thereafter. For a description of focal seizures, which is a potential 
indication for a Phase 2 XEN901 clinical trial, see “—XEN1101, A Selective Kv7 Potassium Channel Modulator for the Treatment of 
Epilepsy—About Focal Seizures” above.

About Early Infantile Epileptic Encephalopathy (EIEE13)

Mutations in the SCN8A gene result in a gain-of-function in the Nav1.6 sodium channel that can cause a rare, extremely severe, 

single-gene epilepsy disorder known as EIEE13, which typically presents with seizure onset between birth and 18 months of age. 
Most children diagnosed with EIEE13 have seizures that can occur multiple times a day and are often difficult to treat. Other 
symptoms include learning difficulties, muscle spasms, low or high muscle tone, poor coordination, developmental delay, and features 
similar to autism. The extent of physical disability leaves some children able to make little or no voluntary movement. Most children 
will have trouble learning to speak, and some will need assistance from feeding tubes to get the nourishment they need to grow.

XEN007, A Cav2.l Calcium Channel Inhibitor for the Treatment of Hemiplegic Migraine

We have identified an additional clinical stage, ion channel program, XEN007 (active ingredient flunarizine), to complement 

our neurology-focused product pipeline. XEN007 is a CNS-acting calcium channel inhibitor that directly modulates Cav2.1, which is 
a critical calcium channel implicated in the pathophysiology of HM, a rare and debilitating neurological disorder afflicting 
approximately 60,000 people in the U.S. Flunarizine has been used outside of the U.S. in the prevention of chronic migraine and has 
been reported to have clinical benefit in HM case studies. Our clinical development plans include a proposed strategy to develop 
XEN007 as the first treatment specifically approved for HM anywhere in the world. We have received Orphan Drug Designation from 
the FDA for XEN007 for the treatment of HM. In addition, we have entered into key agreements in order to access regulatory files and 
manufacturing support to potentially enable the accelerated clinical development of XEN007 directly into a Phase 2 clinical trial. We 
are currently examining various development strategies for XEN007 with key opinion leaders and leading clinicians, as well as 
exploring options for potential partnerships for this program.

We believe that there is strong human genetic validation supporting the use of XEN007 for the treatment of HM. At least three 
different genes have been implicated in HM, all of which can promote excessive glutamatergic (excitatory) neurotransmission leading 
to cortical spreading depression which mediates the progressive symptoms characteristic of HM. HM patients may have mutations in 
one of these three causal ion channel genes. In particular, gain-of-function mutations in CACNA1A, the gene that encodes for Cav2.1, 
have been shown to increase the activity of Cav2.1 and thereby enhance excitatory neurotransmission. This increase in Cav2.1 activity 
is therefore thought to play an important causal role in HM. In contrast, the suppression of the channel activity by XEN007, both in 
HM patients with or without mutant Cav2.1, has the potential to dampen the excessive excitatory neurotransmission, thereby 
mediating a beneficial effect in HM. These genetic causes of HM suggest that XEN007 may be well suited for the treatment of HM, 
which has been supported by case study reports. Other neurologic disorders are also being considered for future development of 
XEN007 in both adult and pediatric populations.

New Pipeline Opportunities

Given our expertise in ion channel drug discovery, our efforts are concentrated on the identification of ion channel targets where 
we believe novel selective modulators might represent significant therapeutic advances, with a particular focus on CNS-related orphan 
indications. We intend to expand our pipeline from our internal research efforts and through the acquisition or in-licensing of other 
product candidates or technologies.

6

Our Partnered Programs

Selective Inhibitors of Nav1.7 for the Treatment of Pain

In December 2011, we entered into a collaborative research and license agreement with Genentech and its affiliate, F. Hoffman-

La Roche Ltd, or Roche, to discover and develop selective oral inhibitors of Nav1.7 for the treatment of pain. For a more detailed 
description of the terms of this agreement 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. 

Clinical Development

We have an ongoing collaboration with Genentech focused on developing novel inhibitors of Nav1.7 for the treatment of pain. 

Genentech has completed a Phase 1 clinical trial for GDC-0310, which is an oral, selective Nav1.7 small-molecule inhibitor developed 
for the potential treatment of pain. Guidance around the future clinical development of GDC-0310 will be updated once ongoing pre-
clinical studies are completed and the final results are analyzed by Genentech.

Chronic pain conditions, such as severe cancer pain and neuropathic pain, are generally recognized as unmet medical needs 

providing potential commercial opportunities for a new oral pain drug. Currently available pain drugs often have either a lack of 
meaningful pain relief or dose limiting side effects for many patients. An orally administered selective Nav1.7 inhibitor could present 
a novel mechanism for the treatment of moderate to severe pain as a single agent or in combination with existing analgesics that work 
through different mechanisms. We believe that the selective inhibition of Nav1.7 may lower the potential for dose-limiting central 
nervous system side-effects and allow for an improved side-effect profile for oral administration of such an inhibitor, which could 
potentially allow for the treatment of pain that has a central or deep tissue component, including cancer pain and neuropathic pain.

Additional Collaborative Work with Genentech

We formed a second collaboration with Genentech in March 2014 for pain genetics, with a focus on rare phenotypes where 

individuals have an inability to perceive pain or where individuals have non-precipitated spontaneous severe pain. We believe these 
phenotypes may unlock new key molecular regulators of pain signaling in humans, which we will seek to validate as targets for new 
pain drugs. In March 2017, the research term for this second collaboration agreement was extended until March 2018. To date, 
Genentech has paid us a $1.5 million upfront payment and two $0.25 million milestone payments related to the identification of novel 
pain targets in September 2015 and July 2017. For a more detailed description of the terms of our collaborations with Genentech, see 
“—Collaborations, Commercial and License Agreements” below.

Selective Small-Molecule Inhibitors of Targets for the Treatment of Cardiovascular Disease

We entered into a collaborative research and option agreement with Merck in June 2009 to discover novel targets and 

compounds for the treatment of cardiovascular disease. For a more detailed description of the terms of our agreement with Merck, see 
“—Collaborations, Commercial and License Agreements” below. In 2012, Merck exercised its option to obtain an exclusive license to 
a target for cardiovascular disease and compound inhibitors that were discovered during the research collaboration. The target, when 
inhibited, is predicted to provide a beneficial lipid profile with the goal of protecting from cardiovascular disease.

Collaborations, Commercial and License Agreements

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). XEN1101 was previously acquired by 1st 
Order from an affiliate of Valeant Pharmaceuticals International, Inc., or Valeant. Pursuant to the terms of the agreement, we also 
assumed certain obligations due to Valeant from 1st Order pursuant to the terms of their agreement, including potential milestone and 
royalty payments.

7

Under the terms of the 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. Future potential payments to both 1st Order and Valeant include $1.0 
million in clinical development milestones, up to $13.0 million in regulatory milestones, and up to approximately $33.6 million in 
sales-based and other milestones, which includes a $1.5 million milestone that may be payable pre-commercially, plus a mid-to-high 
single digit percentage royalty on commercial sales.

The agreement contains customary representations, warranties and covenants by us and 1st Order. 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.

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 and its affiliate, Roche, 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 the clinical 
trial application, or 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 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.

In May 2015, we amended the collaborative research and license agreement to leverage the work performed in our ongoing 

Nav1.7 pain collaboration with Genentech for use in our research and development program directed towards modulators of Nav1.6 
for use in the field of treating epilepsy. Pursuant to the amendment, we obtained a worldwide, non-exclusive, revocable license under 
intellectual property exclusively licensed by us to Genentech and Genentech intellectual property developed under the Nav1.7 
collaboration that is necessary or useful to make and use certain Nav1.6 modulators for use in the field, excluding commercialization. 
We obtained a right of first negotiation for a certain period of time to obtain a worldwide, exclusive license under the intellectual 
property previously licensed by us to commercialize certain Nav1.6 modulators to treat any disease in the field. We also granted 
Genentech a right of first negotiation to enter into a drug research and development collaboration with us for our Nav1.6 program. 
Genentech can terminate the license upon 90 days’ notice after the third anniversary of the amendment or at any time upon our 
uncured material breach.

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Pursuant to the amendment, we granted Genentech a worldwide exclusive license under intellectual property developed under 

our Nav1.6 program. The license permits Genentech to develop and commercialize compounds identified or first made in our Nav1.6 
program for all uses outside the field of epilepsy and to develop and commercialize compounds (other than certain compounds 
identified or first made in our Nav1.6 program) for all uses. If Genentech reaches certain development milestones for and/or sells 
certain compounds identified or first made in our Nav1.6 program that are covered by a patent licensed to Genentech under the 
amendment, products containing such compound would be included in the products subject to the royalty and milestone obligations 
payable to us under the original agreement. The collaborative research and license agreement was amended in December 2015 to 
extend the term of the research program and, in March 2016, the agreement was amended again, pursuant to which we obtained a non-
sublicensable, non-transferable, royalty free, non-exclusive license to make, use and test certain collaboration compounds developed 
under the Nav1.7 collaboration for internal research purposes during the term of the agreement. 

In March 2014, we entered into an additional agreement with Genentech for pain genetics, which is 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 have 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, two $0.25 million milestone payments related to the identification of novel pain targets in September 2015 
and July 2017, and we are eligible for an additional $1.5 million in milestone payments. The agreement terminates upon the expiration 
of Genentech’s time-limited, exclusive right of first negotiation which shall be exercisable throughout the research term. Genentech 
may terminate the agreement with three months advance notice anytime on or after the 12 month 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 
for 90 days. In March 2017, the research term for this agreement was extended until March 2018.

Agreement with Merck for Cardiovascular Disease

In June 2009, we entered into an exclusive collaborative research and option agreement with Merck, pursuant to which the 

parties conducted a research program to discover and develop novel small-molecule candidates for the potential treatment of 
cardiovascular disease. Merck provided payments to us for our FTEs who performed our activities pursuant to the research program 
conducted under the Merck agreement. The Merck collaborative research program ended in December 2012.

Under the terms of the agreement, Merck had the option to obtain an exclusive license under certain intellectual property 
controlled by us to develop and commercialize compounds and products directed to targets in the research program, which has now 
expired. In June 2012, Merck exercised its option and paid us $2.0 million to obtain such a worldwide exclusive license to develop 
and commercialize compound inhibitors of a target that was identified using our Extreme Genetics discovery platform. Through 
December 31, 2017, we have received milestone payments and an option fee totaling $9.0 million, and we are eligible for further 
research, development and regulatory milestone payments of up to $64.0 million, comprised of $21.0 million in pre-clinical and 
clinical milestone payments and up to $43.0 million in regulatory milestone payments for products directed to the licensed target, as 
well as royalties from the mid to high single-digit range in countries where such products are covered by a valid composition or 
method of use claim of a Xenon or Merck patent or, if not covered by such claims, royalties in the mid single-digit range for ten years 
after first commercial sale of such products.

We have an option to co-fund the Phase 1 and first Phase 2 clinical trials of product candidates licensed by Merck by paying 

Merck 50% of such development costs. Such co-funding option is available at the IND-filing stage for the applicable product 
candidate. If we exercise our co-funding option then the maximum eligible milestone amounts due to us increase to $86.5 million and 
the royalties increase to the high single-digit to the sub-teen double-digit range.

Our agreement with Merck expires on the date of the expiration of all royalty payment obligations to us under the agreement. 
Merck has the right to terminate the agreement upon providing certain notices to us. Each party may terminate the agreement in the 
event of a material breach by the other party that remains uncured for 90 days after notice of such breach. In the event that Merck 
terminates the agreement due to our breach, the licenses granted to Merck survive and becomes fully paid up. In the event that we 
terminate the agreement due to Merck’s breach, the licenses granted to Merck terminate.

9

Termination Agreement with Teva

On March 7, 2018, we and Teva Pharmaceuticals International GmbH and Teva Canada Limited, or together Teva, entered into 

a termination agreement terminating by mutual agreement the collaborative development and license agreement dated December 7, 
2012, as amended. We and Teva agreed to terminate the collaborative development and license agreement after Teva informed us that 
it no longer intends to further develop TV-45070. For additional information regarding the terms of the collaborative development and 
license agreement, see the section captioned “Business—Strategic Alliances—Agreement with Teva for TV-45070” in our Annual 
Report on Form 10-K filed with the Securities and Exchange Commission on March 8, 2017.

Pursuant to the termination agreement and subject to receipt by us of an order from the Ontario Securities Commission, or OSC, 
Teva has agreed to transfer and assign 1,000,000 of our common shares held by Teva Canada Limited to us for cancellation. Teva will 
also return, license or assign to us certain intellectual property including certain patent rights. The termination agreement requires us 
to pay a low single-digit percentage royalty to Teva based on net sales of approved products, if any, resulting from any continued 
development and commercialization of TV-45070 by us during the period that assigned or licensed patents cover such products. Teva 
will also transfer regulatory filings related to TV-45070 to us.

The termination agreement will become effective on the date specified by us in a written notice to Teva. The effective date will 

be after the date that we receive the OSC order granting us exemptive relief from the requirements related to issuer bids under 
applicable Canadian securities laws in connection with the transfer and assignment to us by Teva Canada Limited of the 1,000,000 
common shares and not earlier than 10 business days from the date that we issue a press release announcing the termination 
agreement. We have made an application to the OSC for the OSC order and expect the effective date to be on or about March 22, 
2018. 

The termination agreement includes customary representations, warranties, indemnities, releases and covenants of us and Teva. 

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 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, 2017, we owned, co-owned or licensed 61 issued U.S. patents and approximately 12 pending U.S. patent 
applications, including provisional and non-provisional filings. We also owned, co-owned or licensed an additional 780 pending and 
granted counterpart applications worldwide, including 227 country-specific validations of 15 European patents.

As of December 31, 2017, we owned two issued U.S. patents 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 10 foreign issued patents (exclusive of European patent national validations) and have filed nine pending 
corresponding applications in various foreign jurisdictions relating to XEN1101 and certain related compounds.

As of December 31, 2017, we have filed a PCT international patent application as well as a U.S. non-provisional patent 
application directed to XEN901 and methods of making and using XEN901and certain related compounds. Any patents issuing from 
these applications are expected to expire in 2037 (absent any extensions of term).

As of December 31, 2017, we have filed a PCT international patent application as well as a U.S. non-provisional patent 
application directed to certain of our selective inhibitors of Nav1.6 (exclusive of XEN901), as well as methods of making and using 
the same. Any patents issuing from these applications are expected to expire in 2037 (absent any extensions of term).

As of December 31, 2017, we, together with Genentech, co-owned two issued U.S. patents, one pending U.S. patent application 

and 28 pending counterpart patent applications worldwide relating to GDC-0310 and methods of making and using GDC-0310 and 
certain related compounds. The issued patents, as well as any patents issuing from these applications are expected to expire in 2034 
(absent any extensions of term).

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As provided for in the termination agreement entered on March 7, 2018, Teva will assign to us one issued U.S. patent, two 

pending U.S. patent applications and a further two pending PCT international patent applications relating to TV-45070. The issued 
U.S. patent is expected to expire in 2036 (absent any extensions of term) and any patents issuing from these applications are expected 
to expire in 2037 (absent any extensions of term). For a more detailed description of the terms of our termination agreement with 
Teva, see “—Collaborations, Commercial and License Agreements” above. Excluding the patents included in the terms of the 
termination agreement, as of December 31, 2017, we owned 17 issued U.S. patents and three pending U.S. patent applications related 
to TV-45070, and methods of making and using TV-45070 and certain related compounds. The issued patents are expected to expire 
between 2026 and 2034 (absent any extensions of term). In addition, we have 80 foreign issued patents (exclusive of European patent 
national validations) and have filed 73 pending corresponding applications in various foreign jurisdictions relating to TV-45070 and 
certain related compounds. 

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, 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.

Selective Inhibitors of Nav1.7 for the Treatment of Pain

Drug discovery and development for various pain applications is intensely competitive. There are a large number of approved 
products for neuropathic pain, inflammatory pain and other pain indications. These approved products include capsaicin, celecoxib, 
lidocaine, narcotic analgesics, gabapentin, and pregabalin. We are also aware of development programs at several pharmaceutical and 
biotechnology companies that are developing Nav1.7 inhibitors or other sodium channel inhibitors for the treatment of pain, including 
Amgen Inc., AstraZeneca PLC, Biogen Inc., Dainippon Sumitomo Co., Ltd., Eli Lilly and Company, Merck, NeuroQuest Inc., Vertex 
Pharmaceuticals Inc., Voyager Therapeutics, Inc. and Chromocell Corporation in collaboration with its partner Astellas Pharma Inc. 
Moreover, we are aware of various other product candidates in development that target other mechanisms of action to treat various 
pain indications, including calcium channel inhibitors, nerve growth factor inhibitors, and Nav1.8 inhibitors.

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XEN901 and XEN1101 for the Treatment of Epilepsy

If XEN901 or XEN1101 were approved for the treatment of epilepsy, we anticipate that they could potentially compete with 

each other and other anti-epileptic drugs, or AEDs, which typically can be categorized into four classes by AED mechanism: 
modulation of voltage-gated ion channels, enhancement of GABA-mediated inhibitory neurotransmission, reduction of glutamate-
mediated excitatory neurotransmission, and SV2A modulation. Commonly used AEDs include phenytoin, levetiracetam, 
carbamazepine, clobazam, lamotrigine, valproate, oxcarbazepine, topiramate, lacosamide and perampanel. There are currently no 
FDA-approved treatments indicated for the early infantile epileptic encephalopathies EIEE7 or EIEE13. We are not aware of other 
companies that are developing selective Nav1.6 inhibitors for the treatment of epilepsy. There are other AEDs in development that 
could potentially compete with XEN1101 or XEN901, including products in development from UCB, Inc., Zogenix, Inc., GW 
Pharmaceuticals, Sage Therapeutics, Marinus Pharmaceuticals, Inc., SciFluor Lifesciences, Inc., Knopp Biosciences LLC, and 
Upsher-Smith Laboratories, Inc.

Government Regulation

We are developing small-molecule product candidates, which are regulated as drugs by the FDA. 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 
must be obtained before clinical testing of drugs is initiated, and each clinical study protocol for such product candidates is reviewed 
by the FDA 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.

Federal and state agencies, congressional committees and foreign governments have expressed interest in further regulating 
biotechnology. In particular, ethical, social and legal concerns about genetic testing, genetic research and gene therapy could result in 
additional regulations restricting or prohibiting the processes we may use in discovering and developing our products candidates we or 
our collaborators may develop. More restrictive regulations or claims that our products are unsafe or pose a hazard could prevent us 
from commercializing any products. New government requirements may be established that could delay or prevent regulatory 
approval of our product candidates under development. It is impossible to predict whether legislative changes will be enacted, 
regulations, policies or guidance changed, or interpretations by agencies or courts changed, or what the impact of such changes, if any, 
may be.

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:

(cid:129)

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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, 
efficacy, purity, and potency from results of nonclinical testing and 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 preserve the product’s identity, strength, quality and purity;

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.

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

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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.

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 dosage tolerance, optimal 
dosage and dosing schedule.

Phase 3. Clinical studies are undertaken to further evaluate dosage, clinical efficacy, potency, 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.

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 testing the identity, strength, 
quality, potency 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 shelf life.

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 an NDA submitted 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. 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 potent, or effective, for its intended use, and has an 
acceptable purity profile, and whether the product is being manufactured in accordance with GMP to assure and preserve the product’s 
identity, safety, strength, quality, potency and purity. 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.

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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.

If a product receives regulatory approval, the approval may be significantly limited to specific diseases and dosages 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 NDAs 

within ten months from filing and 90% of priority NDAs within six months from filing, 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, 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 
XEN007 (active ingredient flunarizine), a drug we are evaluating internally for the potential treatment of hemiplegic migraine. 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.

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 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 as defined by the FDA or if our product candidate is 
determined to be contained within the competitor’s product for the same 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.

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Post-Approval Requirements

Maintaining compliance with applicable federal, provincial, state, and local statutes and regulations requires the expenditure of 

substantial time and financial resources. 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, include reporting of GMP deviations that may affect the identity, potency, purity and overall safety 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. After an NDA is approved, the product also may be subject to 
official lot release. As part of the manufacturing process, the manufacturer is required to perform certain tests on each lot of the 
product before it is released for distribution. If the product is subject to official release by the FDA, the manufacturer submits samples 
of each lot of product to the FDA together with a release protocol showing a summary of the history of manufacture of the lot and the 
results of all of the manufacturer’s tests performed on the lot. The FDA also may perform certain confirmatory tests on lots of some 
products before releasing the lots for distribution by the manufacturer. In addition, the FDA conducts laboratory research related to the 
regulatory standards on the safety, purity, potency, and effectiveness of drugs .

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 the product’s approved 
labeling (known as “off-label use”), industry-sponsored scientific and educational activities, and promotional activities involving the 
internet. 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. The patent 
term restoration period is generally one-half the time between the effective date of an IND and the submission date of an NDA plus 
the time between the submission date of an NDA and the approval of that application. 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 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. Pediatric exclusivity, 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 voluntary completion of a pediatric study in accordance with an FDA-issued “Written 
Request” for such a study.

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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.

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. 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.

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. 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.

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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:

(cid:129)

(cid:129)

(cid:129)

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 countries in Eastern Europe, Latin America or Asia, the requirements governing 

the conduct of clinical studies, product licensing, coverage, 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, 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 and devices 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 of coverage for new or innovative devices or drug therapies before they will 

reimburse healthcare providers who use such therapies. 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.

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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 most 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 European Union 
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 European Union 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 we 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 new law imposes a significant annual fee on companies that manufacture or import branded prescription drug 
products. Substantial new provisions affecting compliance have also been enacted, which may affect our business practices with 
healthcare practitioners and a significant number of provisions are not yet, or have only recently become, effective. PPACA may 
continue to place downward pressure on pharmaceutical pricing, especially under the Medicare program, and may also increase our 
regulatory burdens and operating costs.

In addition, 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.

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.

The Trump administration and Congress have made changes to current health care laws and may continue to attempt broad 

sweeping changes to existing health care laws. We face uncertainties that might result from modification or repeal of any of the 
provisions of the PPACA, including as a result of current and future executive orders and legislative actions. The impact of those 
changes on us and the pharmaceutical industry as a whole is currently unknown. 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 result of operations. We cannot predict what other 
healthcare programs and regulations will ultimately be implemented at the federal or state level or the effect of any future legislation 
or regulation in the United States may have on our business.

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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 and medical devices are potentially 

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 fraud and abuse laws such as the federal Anti-Kickback Statute, as amended, 
the federal False Claims Act, as amended, 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. All of these activities 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 has been interpreted to 
apply to arrangements between pharmaceutical manufacturers on one hand and prescribers, purchasers, and formulary managers on 
the other. The term “remuneration” is not defined in the federal Anti-Kickback Statute and 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 providing anything at less than its fair market value. Although there are a number 
of statutory exemptions and regulatory safe harbors protecting certain 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 for safe harbor protection from federal Anti-Kickback Statute liability. 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 a person or 
entity no longer needs to have actual knowledge of this statute or specific intent to violate it in order to have committed 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 contain safe harbors.

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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 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 by both the 

federal government and the states in which we conduct our business. 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.

There are also an increasing number of state “sunshine” laws that require manufacturers to make reports to states on pricing and 

marketing information. 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. In addition, pursuant to a similar federal requirement, manufacturers must track and report 
to the federal government certain payments and other transfers of value made to physicians and other healthcare professionals and 
teaching hospitals and ownership or investment interests held by physicians and their immediate family members. The federal 
government discloses the reported information on a publicly available website. These 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 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, and the curtailment or 
restructuring of our operations, 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, we may be subject to similar foreign laws and regulations, which 
may include, for instance, applicable post-approval requirements, including safety surveillance, anti-fraud and abuse laws, and 
implementation of corporate compliance programs and reporting of payments or transfers of value to healthcare professionals.

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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.

Employees

As of December 31, 2017, we had 81employees, including 77 full-time employees. Of our employees, 52 were primarily engaged 

in research and development, 25 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.

Research and Development 

We have committed, and expect to continue to commit, significant resources to developing new product candidates. We have 

assembled an experienced research and development team with scientific and clinical development personnel. Our research and 
development expenses for the years ended December 31, 2017, 2016, and 2015 were $25.6 million, $19.8 million, and $15.2 million, 
respectively.

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. This chemistry generally is amenable to scale-up and does 
not require unusual equipment in the manufacturing process.

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, 
2017, 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.”

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Where You Can Find Additional Information

We make available free of charge through our investor relations website, http://www.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 Internet website and the information contained therein or 
incorporated therein are not intended to be incorporated into this Annual Report on Form 10-K. In addition, the public may read and 
copy any materials we file or furnish with the SEC at the SEC’s Public Reference Room at 100 F Street, N.E., Washington, D.C. 
20549 or may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. Moreover, 
the SEC maintains an Internet site 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.

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 are a clinical stage biotechnology company and, other than the years ended December 31, 2014 and 2013, we have recorded 

net losses in each annual reporting period since inception in 1996, and we do not expect to have sustained profitability for the 
foreseeable future. We had net losses of $30.7 million for the year ended December 31, 2017 and an accumulated deficit of $173.4 
million as of December 31, 2017, 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 have not generated any significant revenue 
from product sales and our product candidates will require substantial additional investment before they will provide us with any 
revenue. 

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

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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;

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., an affiliate of Valeant Pharmaceuticals 
International, Inc. and other third parties;

maintain, protect and expand our intellectual property portfolio;

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

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.

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, or other regulatory agencies, domestic or foreign, to 
perform clinical and other studies 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.

We have not generated any significant royalty 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 have not generated any significant royalty 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. Although we were profitable for the years ended December 31, 2014 and 
2013, we may not be able to sustain profitability in subsequent periods. Our ability to generate future revenue from product sales 
depends heavily on our success, and the success of our collaborators, in:

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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.

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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 proprietary 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 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, 2017, we incurred approximately $25.6 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:

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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 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 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 are party to a loan and security agreement that contains operating and financial covenants that may restrict our business 
and financing activities and we may be required to repay the outstanding indebtedness in an event of default, which could have a 
materially adverse effect on our business.

In December 2017, we entered into a loan and security agreement with Silicon Valley Bank providing for term loans to us with 

an aggregate principal amount of up to $15.0 million, in three tranches of $7.0 million, $5.0 million, and $3.0 million, respectively. 
The initial tranche of $7.0 million was funded in December 2017.

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Borrowings under this loan and security agreement are secured by substantially all of our assets except intellectual property and 

subject to certain other exceptions. The loan and security agreement restricts our ability, among other things, to:

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

make material changes to our business or management;

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

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 capital stock;

enter into certain transactions with our affiliates;

repay subordinated indebtedness; or

make certain investments.

In addition, we are required under our loan agreement and security agreement to comply with various affirmative covenants. 

The covenants and restrictions and obligations in our loan and security agreement, as well as any future financing agreements that we 
may enter into, may restrict our ability to finance our operations, engage in business activities or expand or fully pursue our business 
strategies. Our ability to comply with these covenants may be affected by events beyond our control, and we may not be able to meet 
those covenants. A breach of any of these covenants could result in a default under the loan and security agreement, which could cause 
all of the outstanding indebtedness under the facility to become immediately due and payable and eliminate our eligibility to receive 
additional loans under the agreement.

If we are unable to generate sufficient cash available to repay our debt obligations when they become due and payable, either 

when they mature, or in the event of a default, we may not be able to obtain additional debt or equity financing on favorable terms, if 
at all, which may negatively impact our business operations and financial condition.

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. In 
December 2017, we entered into a loan and security agreement with Silicon Valley Bank, which is secured by substantially all of our 
assets except intellectual property, and requires us to comply with various affirmative and negative covenants. The incurrence of 
additional indebtedness would result in increased fixed payment obligations and, potentially, the imposition of additional restrictive 
covenants. Such additional 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.

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Unstable market and economic conditions may have serious adverse consequences on our business and financial condition.

Global credit and financial markets experienced extreme disruptions at various points over the last decade, characterized by 

diminished liquidity and credit availability, 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 debt or equity 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.

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

As of December 31, 2017, approximately 36% of our cash and cash equivalents and marketable securities was denominated in 
Canadian dollars. Historically, a significant portion of our operating expenses have been in Canadian dollars and the majority of our 
revenue has been in U.S. dollars. 

Prior to December 31, 2014, our functional currency was the Canadian dollar. On January 1, 2015, our functional currency 
changed from the Canadian dollar to the U.S. dollar based on our analysis of the changes in the primary economic environment in 
which we operate. As a result, changes in the exchange rate between the Canadian dollar and the U.S. dollar could materially impact 
our reported results of operations and distort period to period comparisons. In particular, to the extent that foreign currency-
denominated (i.e., non-U.S. dollar) monetary assets do not equal the amount of our foreign currency denominated monetary liabilities, 
foreign currency gains or losses could arise and materially impact our financial statements. As a result of such foreign currency 
fluctuations, it could be more difficult to detect underlying trends in our business and results of operations. In addition, to the extent 
that fluctuations in currency exchange rates cause our results of operations to differ from our expectations or the expectations of our 
investors, the market price of our common shares could be adversely affected.

From time to time, we may engage in exchange rate hedging activities in an effort to mitigate the impact of exchange rate 

fluctuations. For example, we aim to maintain a natural currency hedge against fluctuations in the U.S./Canadian foreign exchange 
rate by matching the amount of U.S. dollar and Canadian dollar investments to the expected amount of future U.S. dollar and 
Canadian dollar obligations, respectively. 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.

Risks Related to Our Business

We, or our collaborators, may fail to successfully develop our product candidates.

Our clinical product candidates, which include XEN1101, XEN901 and GDC-0310, along with our pre-clinical compounds, are 

in varying stages of development and will require substantial clinical development, testing and regulatory approval prior to 
commercialization. It may be several more years before these product candidates or any of our other product candidates receive 
marketing approval, if ever. If any of our product candidates fail to become approved products, our business, growth prospects, 
operating results and financial condition may be adversely affected and a decline in the market price of our common shares could 
result. 

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 target 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, convenience and price; the effectiveness and safety of alternative products; the level of generic competition; and the 
availability of coverage and adequate reimbursement from government and other third-party payers.

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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 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.

If XEN901 or XEN1101 were approved for the treatment of epilepsy, we anticipate that they could potentially compete with 

each other and other anti-epileptic drugs, or AEDs, which typically can be categorized into four classes by AED mechanism: 
modulation of voltage-gated ion channels, enhancement of GABA-mediated inhibitory neurotransmission, reduction of glutamate-
mediated excitatory neurotransmission, and SV2A modulation. Commonly used AEDs include phenytoin, levetiracetam, 
carbamazepine, clobazam, lamotrigine, valproate, oxcarbazepine, topiramate, lacosamide and perampanel. There are currently no 
FDA-approved treatments indicated for the early infantile epileptic encephalopathies EIEE7 or EIEE13. We are not aware of other 
companies that are developing selective Nav1.6 inhibitors for the treatment of epilepsy. There are other AEDs in development that 
could potentially compete with XEN1101 or XEN901, including products in development from UCB, Inc., Zogenix, Inc., GW 
Pharmaceuticals, Sage Therapeutics, Marinus Pharmaceuticals, Inc., SciFluor Lifesciences, Inc., Knopp Biosciences LLC, and 
Upsher-Smith Laboratories, Inc.

Drug discovery and development for various pain applications is intensely competitive. There are a large number of approved 
products for neuropathic pain, inflammatory pain and other pain indications. These approved products include capsaicin, celecoxib, 
lidocaine, narcotic analgesics, gabapentin, and pregabalin. We are also aware of development programs at several pharmaceutical and 
biotechnology companies that are developing Nav1.7 inhibitors or other sodium channel inhibitors for the treatment of pain, including 
Amgen Inc., AstraZeneca PLC, Biogen Inc., Dainippon Sumitomo Co., Ltd., Eli Lilly and Company, Merck, NeuroQuest Inc., Vertex 
Pharmaceuticals Inc., Voyager Therapeutics, Inc. and Chromocell Corporation in collaboration with its partner Astellas Pharma Inc. 
Moreover, we are aware of various other product candidates in development that target other mechanisms of action to treat various 
pain indications, including calcium channel inhibitors, nerve growth factor inhibitors, and Nav1.8 inhibitors.

We have no marketed proprietary products and have not yet advanced a product candidate 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.

We have no experience in Phase 3 and later stage clinical development, 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, obtain regulatory approval, 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 for orphan and niche 
indications. To execute on our business plan for the development of independent programs, we will need to successfully:

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execute our clinical development 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 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 would not be able to develop and commercialize any future orphan 

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

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If we are not successful in discovering, acquiring or in-licensing product candidates in addition to XEN1101, XEN901, 

XEN007 and GDC-0310, 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 

though acquiring or in-licensing other product candidates. To date, our internal discovery efforts have yielded multiple development 
candidates, including GDC-0310 and XEN901. 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 though 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.

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 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.

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 Chief Executive Officer and President, and Mr. Ian Mortimer, our Chief Financial Officer and Chief Operating Officer, 
as well as other employees. The loss of services of any 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.

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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 and other regulators, provide accurate information to the FDA, EMA 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, as well as comparable laws in non-U.S. 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 obtain 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.

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 for orphan and niche indications. In order to execute on this strategy, we will need to build out a regulatory, sales, 
manufacturing, distribution 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.

Drs. Simon Pimstone and Y. Paul Goldberg each devote a small amount of their time to clinical work outside of their duties at 

our company, conducting, generally, two to three outpatient clinics per month on average. Future growth will impose significant added 
responsibilities on members of management, and 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.

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.

Our business and operations could suffer in the event of system failures. 

Computer system, network or telecommunications failures due to events such as damage from malware, unauthorized access, 

terrorism, war, or natural disasters could interrupt our internal or partner operations. For example, the loss of pre-clinical trial data or 
data from completed or ongoing clinical trials for our product candidates could result in delays in our regulatory filings and 
development efforts and significantly increase our costs. To the extent that any disruption or cybersecurity breach were to result in a 
loss of or damage to our data, or inappropriate disclosure of confidential or proprietary information, we could incur liability and other 
remediation costs, and the development of our product candidates could be delayed. While we have implemented security measures 
and, to date, have not detected a cybersecurity breach nor experienced a material system failure, our internal computer systems and 
those of our contractors and consultants, and partners remain potentially vulnerable to damage from these events.

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

If we engage in significant cross-border activities, we will be subject to risks related to international operations, including:

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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;

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 export control and sanctions regulations, 
which likelihood may increase with an increase of operations in foreign jurisdictions;

tighter restrictions on privacy and the collection and use of data, including genetic material, may apply in jurisdictions 
outside of North America, where we find some of the families with individuals that exhibit the severe phenotypes that we 
study; and

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

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

We believe that we may be deemed a passive foreign investment company for the taxable year ended December 31, 2017, which 

could result in adverse tax consequences for U.S. holders of our common shares.

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 assets, we 
believe that we may be deemed a PFIC for the taxable year ended December 31, 2017, and we could be a PFIC in subsequent years. 
Based on the composition of our gross income and gross assets, we do not believe that we were a PFIC for the taxable years ended 
December 31, 2016 and 2015. 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 for which we may be a PFIC. U.S. holders should 
consult their own tax advisors with respect to making this election and the related reporting requirements.

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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, our PFIC status 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 or joint ventures could disrupt our business, cause dilution to our shareholders and otherwise harm our business.

We actively evaluate various strategic transactions on an ongoing basis and may acquire other businesses, products or 
technologies as well as pursue strategic alliances, joint ventures 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:

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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 management of strategic alliances or joint 
ventures or acquisition integration challenges;

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.

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

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

The regulatory approval process is expensive and the time required to obtain approval from the FDA, EMA 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. It is 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:

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the FDA, EMA 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 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 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;

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

the approval policies or regulations of the FDA, EMA or other regulatory authorities outside of the U.S. 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 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.

Clinical drug development involves a lengthy and expensive process with uncertain timelines and uncertain outcomes. If 
clinical trials are prolonged or delayed, we, or our collaborators, may be unable to commercialize our product candidates on a 
timely basis.

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.

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

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

inability to reach agreement with prospective contract research organizations, or 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;

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;

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a requirement to undertake and complete additional pre-clinical studies to generate data required 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 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 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; and

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

The results of any Phase 3 or other pivotal clinical 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. In addition, if the 
FDA, EMA or another applicable regulator disagrees with our or our collaborator’s choice of the key testing criterion, or primary 
endpoint, or the results for the primary endpoint are not robust or significant relative to the control group of patients not receiving the 
experimental therapy, such regulator may refuse to approve our product candidate in the region in which it has jurisdiction. The FDA, 
EMA or other applicable non-U.S. 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 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 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.

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.

Our product candidates – including XEN1101 and XEN901 for the treatment of epilepsy and GDC-0310 for the treatment of 

pain – target novel molecular mechanisms. Regulatory authorities may require more extensive studies of the long-term effects of such 
product candidates for regulatory approval, which could delay development of our product candidates or our future product candidates 
based on novel mechanisms.

Our clinical trials may fail to demonstrate adequately the safety and efficacy of our product candidates, which could prevent or 

delay regulatory approval and commercialization.

Before obtaining regulatory approvals for the commercial sale of our products, we 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. 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. 

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In the case of some of our product candidates, we are seeking to develop treatments for diseases for which there is relatively 
limited clinical experience, and our clinical trials may use novel end points and measurement methodologies or subjective patient 
feedback, which adds a layer of complexity to our clinical trials and may delay regulatory approval. In addition, our focus on orphan 
and niche markets may cause us to select target indications that are in more challenging therapeutic areas. Clinical trials for pain, the 
indication for which GDC-0310 is being developed, are inherently difficult to conduct. The primary measure of pain is based on 
subjective patient feedback, which can be influenced by factors outside of our control, and can vary widely from day to day for a 
particular patient, from patient to patient, and from site to site within a clinical study. The placebo effect also tends to have a more 
significant impact in pain trials. 

If our product candidates are not shown to be both safe and effective in clinical trials, we will not be able to obtain regulatory 

approval or commercialize these product candidates and products. 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 may find it difficult to enroll patients in our clinical studies, including for orphan or niche indications, which could delay or 

prevent clinical studies of our product candidates.

We 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 our clinical studies in a timely manner. Patient enrollment for clinical trials 
for orphan and niche indications and for more prevalent conditions is affected by factors including:

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severity of the disease under investigation;

design of the study protocol;

size of the patient population;

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;

efforts to facilitate timely enrollment in clinical studies; and

patient referral practices of physicians.

The limited patient populations in orphan and niche indications, such as early infantile epileptic encephalopathies, or EIEEs, 

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 for clinical trials. This means that we or our collaborators generally 
will have to run multi-site and potentially multi-national trials, which can be expensive and require close coordination and supervision. 
If we 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.

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.

A product candidate that receives orphan drug designation can benefit from a streamlined regulatory process as well as potential 

commercial benefits following approval. 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.

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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 
internally for the potential treatment of hemiplegic migraine, has received orphan drug designation from the FDA. 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.

Results of earlier clinical trials may not be predictive of the results of later-stage clinical trials.

The results of pre-clinical studies and early clinical trials 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 and validated measures of efficacy, as is often the case with orphan diseases for which no 
drugs have been developed previously. 

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 formulation, are altered along the 
way in an effort to optimize processes and results. Such changes carry the risk that they will not achieve these intended objectives. 
Any of these changes could cause our product candidates to perform differently and 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 bridging 
clinical trials or the repetition of one or more clinical trials, increase clinical trial costs, delay approval of our product candidates 
and/or jeopardize our or our collaborators’ ability to commence product sales and generate revenue.

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 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 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 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, the EMA 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 clinical trials or reporting as conditions of approval. 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. 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 and could delay or prevent the 
introduction of our current and any future products, in certain countries.

If we 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.

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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 Commercialization

If, in the future, we are unable to establish our own sales, marketing and distribution capabilities or enter into licensing or 
collaboration 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, in part, building our own commercial infrastructure to selectively commercialize future products in niche or orphan 
indications. Where we believe such involvement would advance our business, we seek to retain the right to participate in the future 
development and commercialization of such products. 

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 proprietary product 
candidates will be approved. 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:

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

the inability of sales personnel to obtain access to physicians or an inadequate numbers of physicians to prescribe any 
future products;

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; and

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

Where and when appropriate, we may elect to utilize contract sales forces or distribution partners to assist in the 
commercialization of 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 the product candidates that we develop independently, 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 our product candidates we commercialize 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.

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For any approved product, we 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 conduct post-approval. Later 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:

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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 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 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.

If the market opportunities for any product that we or our collaborators develop are smaller than we believe they are, our 

revenue may be adversely affected and our business may suffer.

We intend to focus our independent product development on treatments for rare diseases. 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 estimates. 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. If the prevalence of such diseases is smaller than we have projected, then, even if our products are 
approved, we may not be able to successfully commercialize them.

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 any 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 any collaborator 
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 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 any collaborator’s 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 any collaborator’s 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.

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Our target patient populations in orphan and niche indications, such as EIEE7 and EIEE13 are relatively small. In order for 
therapies that are designed to treat smaller patient populations to be commercially viable, the 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 a coverage and 
reimbursement strategy 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.

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, or will 
significantly change, the way healthcare is financed by both governmental and private insurers. 

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. 

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.

The Trump administration and Congress may also attempt broad sweeping changes to the current health care laws, including 

PPACA. The impact of any such changes on us and the pharmaceutical industry as a whole is currently unknown. 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 result of operations. 
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 abroad. 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, 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.

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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 Genentech and Merck, to 
fund and conduct the research and any clinical development of product candidates under our collaboration 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:

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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;

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; 
and

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

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 would likely 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 would be materially and adversely affected.

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

our ability to develop future product candidates and commercialize future products.

We may seek to enter into additional product collaborations in the future, including alliances with other biotechnology or 
pharmaceutical companies, to enhance and accelerate the development of our 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 future product candidates because our research and development pipeline may be insufficient, our 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 is 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:

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

our cash expenditures related to development of our 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, 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.

We intend to rely on third-party manufacturers to produce our clinical product candidate 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 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 to manufacture product candidates licensed to them or work with multiple third-party 
contract manufacturers 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 are unable to arrange for 
such third-party manufacturing sources, or fail to do so on commercially reasonable terms, we may not be able to successfully produce 
sufficient supply of product candidate or we 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 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 and other regulatory agencies. They are 
also subject to periodic unannounced inspections by the FDA, EMA 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 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.

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We rely on third parties to monitor, support, conduct, and/or oversee clinical trials of the product candidates that we are 
developing independently and, in some cases, to maintain regulatory files for those product candidates. We may not be able to 
obtain regulatory approval for our product candidates or commercialize any products that may result from our development 
efforts, if we are not able to maintain or secure agreements with such third parties on acceptable terms, if these third parties do not 
perform their services as required, or if these third parties fail to timely transfer any regulatory information held by them to us.

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.

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 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.

We and our CROs are required to comply with cGCP regulations and guidelines enforced by the FDA, 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 cGCP regulations through periodic inspections of clinical trial sponsors, principal 
investigators and clinical trial sites. If we or any of our CROs fail to comply with applicable cGCP regulations, the clinical data 
generated in our clinical trials may be deemed unreliable and our submission of marketing applications may be delayed or the FDA, 
EMA or another regulatory authority may require us to perform additional clinical trials before approving our marketing applications. 
Upon inspection, the FDA, EMA 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 and other regulatory authorities, and our clinical trials may require a large number of test 
subjects. Our failure to comply with these regulations may require us to repeat clinical trials, which would delay the regulatory 
approval process and increase our costs. Moreover, our business may be implicated if any of our CROs 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 is terminated, we may be unable to enter into arrangements with alternative CROs 
on commercially reasonable terms, or at all.

Switching or adding CROs 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 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.

41

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. 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. 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.

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 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 many 
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 permit us to maintain our competitive advantage. 

The following examples are illustrative:

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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.

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

Filing, prosecuting 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 selling 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.

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 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 or licensors. 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, some of these rights relating to the patent portfolios for GDC-0310 are held by 
Genentech.

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If any current or future licensee or licensor 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 and selling competing products.

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 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 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, 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 are 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, 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.

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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 sale or use 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 Genentech, Merck 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.

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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 our XEN1101 program, we are subject to 
various obligations, including diligence obligations such as development and commercialization obligations, as well as potential 
royalty 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. Generally, the loss of any one of our 
current licenses, 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 or clinical 
development 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.

On June 13, 2013, the U.S. Supreme Court decision in Association for Molecular Pathology v. Myriad Genetics, Inc., held that 

isolated DNA sequences are not patentable. In December 2014, the USPTO issued its Interim Guidance on Patent Subject Matter 
Eligibility, in which it extended Myriad's "marked difference" standard for patent subject matter eligibility to all potential natural 
products. This standard applies to patent claims that recite not only nucleic acids (such as DNA in Myriad), but also other subject 
matter that could be considered a natural product, such as peptides, proteins, extracts, organisms, antibodies, chemicals, and minerals. 
As a consequence of the Myriad decision and the USPTO’s Interim Guidance, if any of our future product candidates utilize isolated 
DNA, peptides, proteins or the like, we will not be able to obtain patents in the U.S. claiming such novel gene targets that we discover, 
which could limit our ability to prevent third parties from developing drugs directed against such targets. 

If we do not obtain protection under the Hatch-Waxman Act 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 we request.

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 will be shortened and our competitors may obtain 
approval of competing products following our patent expiration, and our revenue could be reduced, possibly materially.

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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 Our Industry

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:

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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.

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We currently carry product liability insurance of $10,000,000 CAD per occurrence and $10,000,000 CAD 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.

Our future relationships with customers and third-party payers, if any, 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 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:

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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 and civil monetary penalty laws, including the federal False Claims Act, which 
impose criminal and civil penalties, including civil whistleblower or qui tam actions, against individuals or entities for 
knowingly presenting, or causing to be presented, to the federal government, including the Medicare and Medicaid 
programs, or other third-party payers claims for payment that are false or fraudulent or making a false statement to avoid, 
decrease or conceal an obligation to pay money to the federal government;

HIPAA, which imposes criminal and civil liability for executing a scheme to defraud any healthcare benefit program and 
making false statements relating to healthcare matters;

HIPAA, as amended by HITECH, and their respective implementing regulations, which impose obligations on covered 
healthcare providers, health plans, and healthcare clearinghouses, as well as their business associates that create, receive, 
maintain, or transmit individually identifiable health information for or on their behalf, with respect to safeguarding the 
privacy, security and transmission of individually identifiable health information;

the federal Open Payments program; and

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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; 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, imprisonment, 
exclusion from participation in government healthcare programs, such as Medicare and Medicaid, 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.

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 U.S. and Canadian federal, provincial, and local 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 third-party 
contract manufacturers, 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 forgoing could have a material adverse effect on our business.

Risks Related to 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:

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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;

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

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

results from or 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, 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;

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 the 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;

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. 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 or other equity or debt securities convertible into common 

shares in connection with a financing, acquisition, litigation settlement, employee arrangements, or otherwise. Any such issuance 
could result in substantial dilution to our existing shareholders and could cause the market price of our common shares to decline.

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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 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:

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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;

our board of directors may, without shareholder approval, issue preferred shares having any terms, conditions, rights, 
preferences and privileges as the board of directors may determine; and

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

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 laws of Canada which in some cases have a different effect on shareholders than the 

corporate laws of Delaware, U.S.

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 a holder of 5% or more of our common shares can requisition a special 
meeting of shareholders, whereas such right does not exist under the DGCL.

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.

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We are an “emerging growth company,” and any decision on our part to comply only with certain reduced reporting and 
disclosure requirements applicable to emerging growth companies could make our common shares less attractive to investors.

We are an “emerging growth company,” as defined in the Jumpstart Our Business Startups Act of 2012, or the JOBS Act. For as 

long as we continue to be an “emerging growth company,” we may choose to take advantage of exemptions from various reporting 
requirements applicable to other public companies that are not “emerging growth companies,” including, but not limited to, not being 
required to have our independent registered public accounting firm audit our internal control over financial reporting under 
Section 404, reduced disclosure obligations regarding executive compensation in our periodic reports and proxy statements and 
exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and shareholder approval of any 
golden parachute payments not previously approved. We could be an “emerging growth company” for up to five years following the 
completion of our initial public offering, although, if we have more than $1.07 billion in annual revenue, if the market value of our 
common shares held by non-affiliates exceeds $700 million as of June 30 of any year, or we issue more than $1.0 billion of non-
convertible debt over a three-year period before the end of that five-year period, we would cease to be an “emerging growth company” 
as of the following December 31. Investors could find our common shares less attractive if we choose to rely on these 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.

As an “emerging growth company,” the JOBS Act allows us to delay adoption of new or revised accounting pronouncements 

applicable to public companies until such pronouncements are made applicable to private companies. However, we previously decided 
to “opt out” of such extended transition period, and as a result, we will comply with new or revised accounting standards on the 
relevant dates on which adoption of such standards is required for non-emerging growth companies. Section 107 of the JOBS Act 
provides that our decision to opt out of the extended transition period for complying with new or revised accounting standards is 
irrevocable.

Complying with the laws and regulations affecting public companies will increase our costs and the demands on management 

and could harm our operating results and our ability to accurately report our financial condition, results of operations or cash 
flows, which may adversely affect investor confidence in us and, as a result, the value of our common shares.

As a public company, and particularly after we cease to be an “emerging growth company,” we will incur significant legal, 
accounting and other expenses. In addition, the Sarbanes-Oxley Act of 2002, or the Sarbanes-Oxley Act, and the related rules and 
regulations subsequently implemented by the Securities and Exchange Commission, or SEC, the applicable Canadian securities 
regulators and NASDAQ impose numerous requirements on public companies, including requiring changes in corporate governance 
practices. Also, the Securities Exchange Act of 1934, as amended, or the Exchange Act, requires, among other things, that we file 
annual, quarterly and current reports with respect to our business and operating results. Our management and other personnel have and 
will continue to devote a substantial amount of time to compliance with these laws and regulations. These requirements have increased 
and will continue to increase our legal, accounting, and financial compliance costs and have made and will continue to make some 
activities more time-consuming and costly. For example, these rules and regulations make it difficult and expensive for us to maintain 
director and officer liability insurance and we may be required to accept reduced policy limits and coverage or to incur substantial 
costs to maintain the same or similar coverage. These rules and regulations could also make it more difficult for us to attract and retain 
qualified persons to serve on our board of directors or our board committees or as executive officers.

The Sarbanes-Oxley Act requires, among other things, that we assess the effectiveness of our internal control over financial 

reporting annually and the effectiveness of our disclosure controls and procedures quarterly. In particular, Section 404 of the 
Sarbanes-Oxley Act, or Section 404, requires us to perform system and process evaluation and testing of our internal control over 
financial reporting to allow management to report on, and our independent registered public accounting firm potentially to attest to, 
the effectiveness of our internal control over financial reporting. As an “emerging growth company” we expect to avail ourselves of 
the exemption from the requirement that our independent registered public accounting firm attest to the effectiveness of our internal 
control over financial reporting under Section 404. However, we may no longer avail ourselves of this exemption when we cease to be 
an “emerging growth company.” When our independent registered public accounting firm is required to undertake an assessment of 
our internal control over financial reporting, the cost of our compliance with Section 404 will correspondingly increase. Our 
compliance with applicable provisions of Section 404 will require that we incur substantial accounting expense and expend significant 
management time on compliance-related issues as we implement additional corporate governance practices and comply with reporting 
requirements. Moreover, if we are not able to comply with the requirements of Section 404 applicable to us in a timely manner, or 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, the market price of our common shares could 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.

52

Furthermore, investor perceptions of our company may suffer if deficiencies are found, and this could cause a decline in the 
market price of our common shares. 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. If we are unable to implement 
these requirements effectively or efficiently, it could harm our operations, financial reporting, or financial results and could result in 
an adverse opinion on our internal controls from our independent registered public accounting firm.

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 controls over financial reporting are 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. In addition, any 
testing by us conducted in connection with Section 404 or any subsequent testing by our independent registered public accounting 
firm, may reveal deficiencies in our internal controls over financial reporting that are deemed to be material weaknesses or that may 
require prospective or retroactive changes to our financial statements or identify other areas for further attention or improvement. 
Inferior internal controls could also cause investors to lose confidence in our reported financial information, which could have a 
negative effect on the market price of our common shares.

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. However, for as long as we are an “emerging growth company” under 
the JOBS Act, our independent registered public accounting firm will not be required to attest to the effectiveness of our internal 
controls over financial reporting pursuant to Section 404. An independent assessment of the effectiveness of our internal controls 
could detect problems that our management’s assessment might not. In addition, our management did not perform an evaluation of our 
internal control over financial reporting as of December 31, 2014 or December 31, 2013 and our independent registered public 
accounting firm did not perform an evaluation of our internal control over financial reporting during any period in accordance with the 
provisions of the Sarbanes-Oxley Act. Had we and our independent registered public accounting firm performed such an evaluation, 
control deficiencies may have been identified by management or our independent registered public accounting firm, and those control 
deficiencies could have also represented one or more material weaknesses. Undetected material weaknesses in our internal controls 
could lead to financial statement restatements and require us to incur the expense of remediation.

Future sales and issuances of our common shares or rights to purchase common shares, including pursuant to our equity 

incentive plans, could cause you to incur dilution and could cause the market price of our common shares to fall.

As of December 31, 2017, options to purchase 2,339,905 of our common shares with a weighted-average exercise price of $7.41 

per common share were outstanding. The exercise of any of these options would result in dilution to current shareholders. Further, 
because we will need to raise additional capital to fund our clinical development programs, we may in the future sell substantial 
amounts of common shares or 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 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.

These future issuances of common shares or common share-related securities, together with the exercise of outstanding options 

and any additional common shares issued in connection with acquisitions, if any, may result in further dilution to our existing 
shareholders, and new investors could gain rights, preferences and privileges senior to those of holders of our common shares.

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 stock 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.

53

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:

(cid:129)

(cid:129)

(cid:129)

(cid:129)

(cid:129)

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.

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.

Our management team has broad discretion as to the use of the net proceeds from public or private equity or 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 the net proceeds to us from our December 2017 debt financing and September 

2016 public equity offering of our common shares. You 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. The results and effectiveness of the use of proceeds are uncertain, and we could spend the proceeds in ways that you 
do not agree with or that do not improve our results of operations 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.

Item 1B.  Unresolved Staff Comments

None.

Item 2.

Properties

Our headquarters are located in Burnaby, British Columbia, where we occupy approximately 41,332 square feet of office and 
laboratory space. The term of the lease expires in March 2022. We currently pay an aggregate of approximately $107,474 per month 
in base rent, property tax, common area maintenance fees and management fees, and the landlord holds a security deposit equal to 
approximately $72,394.

54

Our U.S. office is located in Boston, Massachusetts, where we occupy on a month-to-month basis approximately 215 square 

feet.

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.

55

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.” 

Prior to such time, there was no public market for our common shares. The following table sets forth the high and low sales prices per 
common share as reported on The NASDAQ Global Market for the periods indicated.

Year Ended December 31, 2018
First Quarter (through March 2, 2018)
Year Ended December 31, 2017
Fourth Quarter
Third Quarter
Second Quarter
First Quarter
Year Ended December 31, 2016
Fourth Quarter
Third Quarter
Second Quarter
First Quarter

High

Low

  $

  $
  $
  $
  $

  $
  $
  $
  $

4.45   $

3.50   $
3.50   $
4.45   $
9.95   $

8.75   $
8.56   $
7.72   $
8.42   $

2.70 

2.10 
2.25 
2.85 
3.95 

7.35 
5.88 
5.65 
6.31  

On March 2, 2018, the last reported sale price of our common shares was $4.40 per share.

Holders

As of March 2, 2018, there were approximately 166 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 
2018 Annual Meeting of Shareholders to be filed with the SEC within 120 days after the end of our fiscal year ended December 31, 
2017.

56

 
 
 
   
 
   
     
  
   
     
  
   
     
  
Performance Graph

This performance graph shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as 
amended, or the Exchange Act, or incorporated by reference into any of our filings under the Securities Act of 1933, as amended, or 
the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

The following stock performance graph illustrates a comparison of the total cumulative shareholder return on our common 
shares from November 5, 2014, which is the date our common shares commenced trading on The NASDAQ Global Market, through 
December 31, 2017, to two indices: the NASDAQ Composite Index and the NASDAQ Biotechnology Index. The graph assumes an 
initial investment of $100 on November 5, 2014, and that any dividends were reinvested. The comparisons in the graph are required 
by the Securities and Exchange Commission and are not intended to forecast or be indicative of possible future performance of our 
common shares.

Recent Sales of Unregistered Securities

On December 18, 2017, we issued Silicon Valley Bank a warrant to purchase 50,411 of our common shares at a price per share 

of $2.43. If Silicon Valley Bank advances a second tranche of funding pursuant to the loan and security agreement, the number of 
common shares exercisable pursuant to the warrant will increase by 36,008. If Silicon Valley Bank advances a third tranche of funding 
pursuant to the loan and security agreement, the number of common shares exercisable pursuant to the warrant will increase by 
21,604. In no event will the number of common shares issuable pursuant to the exercise of the warrant exceed 108,023 in the 
aggregate. The issuance of the warrant was exempt from registration under the Securities Act of 1933, as amended, pursuant to 
Section 4(a)(2) thereof as a transaction by an issuer not involving a public offering and exempt from the prospectus requirements 
under applicable Canadian securities laws as Silicon Valley Bank is an “accredited investor”, as such term is defined in section 1.1 of 
National Instrument 45-106 - Prospectus Exemptions.

Issuer Repurchases of Equity Securities

None.

57

Item 6.

Selected Financial Data

The following selected financial data is derived from our audited consolidated financial statements and should be read in 
conjunction with, and is qualified in its entirety by, Item 7, “Management’s Discussion and Analysis of Financial Condition and 
Results of Operations,” and Item 8, “Financial Statements and Supplementary Data” contained elsewhere in this Annual Report on 
Form 10-K. The selected Statements of Operations Data for the years ended December 31, 2017, 2016 and 2015 and Balance Sheet 
Data as of December 31, 2017 and 2016 have been derived from our audited consolidated financial statements appearing elsewhere in 
this Annual Report on Form 10-K. The selected Statements of Operations Data for the years ended December 31, 2014 and 2013 and 
Balance Sheet Data as of December 31, 2015, 2014 and 2013 have been derived from our audited financial statements that are not 
included in this Annual Report on Form 10-K. Historical results are not necessarily indicative of future results. Our audited annual 
consolidated financial statements have been prepared in U.S. dollars and in accordance with U.S. Generally Accepted Accounting 
Principles.

2017

Year Ended December 31,
2016
2014
2015
(in thousands except per share amounts)

2013

Statement of Operations Data:
Revenue:

Collaboration revenue
Royalties

Operating expenses:
Research and development
General and administrative
Total operating expenses
Income (loss) from operations
Other income (expense):
Interest income
Interest expense
Foreign exchange gain (loss)
Gain on write-off and disposal of assets

Net income (loss)
Net income attributable to participating securities
Net income (loss) attributable to common shareholders
Net income (loss) per share—basic (1)
Net income (loss) per share—diluted (1)
Weighted-average common shares outstanding used
   in computing basic net income (loss) per share (1)
Weighted-average common shares outstanding used
   in computing diluted net income (loss) per share (1)

Balance Sheet Data:
Cash, cash equivalents and marketable securities
Working capital (2)
Total assets
Loan payable
Redeemable convertible preferred shares
Total shareholders’ equity (deficit)

  $

309    $
2     
311     

1,767    $
36     
1,803     

15,573    $
4     
15,577     

28,366    $
4     
28,370     

25,573     
7,313     
32,886     
(32,575)    

19,828     
6,792     
26,620     
(24,817)    

15,152     
9,786     
24,938     
(9,361)    

477     
—     
1,394     
—     
(30,704)    
—     
(30,704)   $
(1.71)   $
(1.72)   $

504     
—     
1,316     
—     
(22,997)    
—     
(22,997)   $
(1.48)   $
(1.48)   $

542     
—     
(6,933)    
—     
(15,752)    
—     
(15,752)   $
(1.10)   $
(1.10)   $

11,768     
5,496     
17,264     
11,106     

568     
—     
1,344     
—     
13,018     
—     
13,018    $
4.11    $
3.28    $

27,352 
4 
27,356 

12,303 
5,341 
17,644 
9,712 

338 
(64)
2,035 
11 
12,032 
8,199 
3,833 
2.87 
1.91 

17,985     

15,493     

14,282     

3,166     

1,338 

18,002     

15,493     

14,282     

3,964     

2,009  

2017

2016

As of December 31,
2015
(in thousands)

2014

2013

43,667    $
40,738     
46,121     
6,804     
—     
35,934     

64,146    $
62,089     
67,487     
—     
—     
63,901     

58,651    $
57,951     
63,949     
—     
—     
61,034     

84,041    $
70,460     
87,418     
—     
—     
72,779     

49,276 
31,384 
54,487 
— 
102,488 
(78,372)

  $
  $
  $

  $

(1)

See Note 5 to our consolidated financial statements appearing elsewhere in this report for an explanation of the method used to 
calculate basic and diluted net income (loss) per common share and the weighted-average number of common shares used in 
computation of the per common share amounts.

(2) Certain comparative figures, which comprise working capital, have been reclassified to conform to the consolidated financial 

statement presentation adopted for the current year.

58

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
      
      
      
      
  
   
 
   
   
      
      
      
      
  
   
   
   
   
   
      
      
      
      
  
   
   
   
   
   
   
   
   
 
 
 
 
 
 
   
   
   
   
 
 
 
 
   
      
      
      
      
  
   
   
   
   
   
Item 7.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

You should read the following discussion and analysis together with Part II, Item 6 — “Selected Financial Data” and 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 focused on developing innovative therapeutics to improve the lives of 
patients with neurological disorders. Building upon our extensive knowledge of human genetics and diseases caused by mutations in 
ion channels, known as channelopathies, we are advancing – both independently and with our collaborators – a novel product pipeline 
of central nervous system, or CNS, therapies to address areas of high unmet medical need, such as epilepsy and pain.

To date, our pharmaceutical collaborations have generated in aggregate over $160.0 million in non-equity funding with the 
potential to provide us with future milestone payments, as well as royalties on product sales. Our current pharmaceutical partners 
include Genentech, a member of the Roche Group, and Merck & Co., Inc., or Merck (through its affiliate, Essex Chemie AG).

Our clinical development pipeline includes:

(cid:129)

(cid:129)

(cid:129)

(cid:129)

XEN1101 is a Kv7 potassium channel opener being developed for the treatment of epilepsy including: treatment-resistant 
adult and pediatric focal seizures; rare, pediatric forms of epilepsy, such as EIEE7, an early infantile epileptic 
encephalopathy associated with mutations in the KCNQ2 gene that cause loss-of-function in the Kv7.2 potassium channel; 
and potentially other neurological disorders. In October 2017, we initiated a randomized, double-blind, placebo-controlled 
Phase 1 clinical trial to evaluate the safety, tolerability and pharmacokinetics of both single ascending doses, or SAD, and 
multiple ascending doses, or MAD, of XEN1101 in healthy subjects. The XEN1101 Phase 1 clinical trial includes a 
pharmacodynamic biomarker read-out from a transcranial magnetic stimulation, or TMS, study, designed to assess 
XEN1101’s ability and potency to modulate cortical excitability, thereby demonstrating activity in the target CNS tissue. 
We expect to present interim Phase 1 results in May 2018. The release of the complete Phase 1 results, including the 
Phase 1b TMS data, is anticipated in the second half of 2018. We anticipate initiating a Phase 2 proof-of-concept trial 
evaluating XEN1101’s efficacy as a treatment for adult focal seizures by year end. We also intends to explore a parallel 
plan to advance XEN1101 into rare, pediatric forms of epilepsy as soon as feasible thereafter;

XEN901 is a potent, highly selective Nav1.6 sodium channel inhibitor being developed for the treatment of epilepsy 
including treatment resistant adult and pediatric focal seizures, as well as rare, pediatric forms of epilepsy, such as EIEE13, 
an early infantile epileptic encephalopathy due to gain-of-function mutations in the SCN8A gene that encodes the Nav1.6 
sodium channel. In February 2018, we initiated a randomized, double-blind, placebo-controlled Phase 1 clinical trial to 
evaluate XEN901’s safety, tolerability and pharmacokinetics in both SAD and MAD cohorts of approximately 64 healthy 
subjects in total. Upon completion of the Phase 1 clinical trial, a read-out of results is anticipated in the second half of 
2018, followed by a Phase 2 proof-of-concept trial evaluating XEN901’s efficacy as a treatment for adult focal seizures. 
We also intend to pursue a parallel plan to advance XEN901 into rare, pediatric forms of epilepsy as soon as feasible 
thereafter;

We have identified an additional clinical stage, ion channel program, XEN007 (active ingredient flunarizine), to expand 
our existing neurology-focused product pipeline. XEN007 is a CNS-acting calcium channel blocker that directly 
modulates Cav2.1, which is a critical calcium channel implicated in the pathophysiology of hemiplegic migraine, or HM, 
a rare and debilitating neurological disorder afflicting approximately 60,000 people in the U.S. Flunarizine has been used 
outside of the U.S. in the prevention of chronic migraine and has been reported to have clinical benefit in HM case studies. 
Xenon’s clinical development plans include a proposed strategy to develop XEN007 as the first treatment specifically 
approved for HM anywhere in the world. We have received Orphan Drug Designation from the U.S. Food and Drug 
Administration, or FDA, for XEN007 for the treatment of HM. In addition, we have entered into key agreements in order 
to access regulatory files and manufacturing support to potentially enable the accelerated clinical development of XEN007 
directly into a Phase 2 clinical trial. We are currently examining various development strategies for XEN007 with key 
opinion leaders and leading clinicians, as well as exploring options for potential partnerships for this program; and

We have an ongoing collaboration with Genentech focused on developing novel inhibitors of Nav1.7 for the treatment of 
pain. Genentech has completed a Phase 1 clinical trial for GDC-0310, which is an oral, selective Nav1.7 small-molecule 
inhibitor developed for the potential treatment of pain. Guidance around the future clinical development of GDC-0310 
will be updated once ongoing pre-clinical studies are completed and the final results are analyzed by Genentech.

59

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 2017, 2016, and 2015, we recognized revenues of approximately $0.3 
million, $1.8 million, and $15.6 million, respectively, consisting primarily of funding and payments from our collaborators. Though 
our revenue from our collaboration and license agreements resulted in net income of $13.0 million for the year ended December 31, 
2014 and $12.0 million for the year ended December 31, 2013, we do not expect to have sustained profitability for the foreseeable 
future. We had net losses of $30.7 million for the year ended December 31, 2017 and an accumulated deficit of $173.4 million as of 
December 31, 2017, from expenses incurred in connection with our research programs and from general and administrative costs 
associated with our operations.

We have not generated any significant 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:

(cid:129)

(cid:129)

(cid:129)

(cid:129)

(cid:129)

(cid:129)

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.

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 have not generated any significant 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, the most significant of which, with respect to revenue, are described at “Business – Strategic Alliances” and “Note 11” 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 and former collaboration and licensing agreements for 

each of the years ended December 31, 2017, 2016 and 2015 (in thousands):

Teva:

Recognition of upfront payment
Research funding

Genentech:

Recognition of upfront payment
Research funding
Milestone payments
Total collaboration revenue

Year Ended December 31,
2016

2015

2017

  $

  $

 $

— 
59 

— 
— 
250 
309    $

 $

— 
116 

10,897 
112 

157 
1,494 
— 
1,767    $

725 
3,589 
250 
15,573  

Pursuant to the terms of our former collaborative development and license agreement with Teva, we received an upfront 
payment of $41.0 million. We determined that the various deliverables under this agreement should be considered as a single unit of 
accounting. As such, the $41.0 million upfront payment was recognized as revenue ratably over the expected period of research 
performance of pre-commercial activities, which was the three-year period from December 2012 through December 2015.

60

 
 
 
 
 
 
   
   
 
   
      
      
  
   
  
  
   
  
  
  
  
  
   
  
  
   
  
  
   
  
  
Pursuant to the terms of our March 2014 genetics collaborative agreement with Genentech, we received an upfront payment of 

$1.5 million. We determined that the various deliverables under this agreement should be considered as a single unit of accounting. As 
such, the $1.5 million upfront payment was recognized as revenue ratably over the expected period of research performance, which 
was the two-year period from March 2014 to March 2016. In September 2015, we received a $0.25 million milestone payment for the 
identification of a novel pain target under this agreement which was recognized upon achievement in September 2015. In July 2017, 
we received a $0.25 million milestone payment for the identification of a second novel pain target under this agreement which was 
recognized upon achievement in July 2017.

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 revenue for the next several years may be 
derived from milestone payments 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, 2017, we have recognized all deferred revenue from upfront payments received under our existing 

collaboration and licensing agreements.

Operating Expenses

The following table summarizes our operating expenses for the years ended December 31, 2017, 2016 and 2015 (in thousands):

Research and development
General and administrative

Total operating expenses

Research and Development Expenses

Year Ended December 31,
2016

2015

2017

  $

  $

25,573 
7,313 
32,886 

 $

 $

19,828 
6,792 
26,620 

 $

 $

15,152 
9,786 
24,938  

Research and development expenses represent costs incurred to conduct research and development of our other proprietary 

product candidates, including any acquired or in-licensed product candidates or technology, as well as to support research and 
development on our product candidates under current and former collaboration agreements.

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, 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 and our pre-clinical candidates 

once nominated and selected for further development, including pre-clinical and discovery costs supporting a development candidate. 
All remaining research and development expenses are reflected in pre-clinical, discovery and other 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, manufacturing, pre-clinical studies and clinical trial 
activities as well as third-party acquisition, license and collaboration fees and laboratory consumables.

61

 
 
 
 
 
 
   
   
 
   
  
  
Clinical development timelines, likelihood of regulatory approval and commercialization and associated costs are uncertain and 
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 expense 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 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. General and administrative expenses also include fair value adjustments of certain liability classified 
stock option awards.

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.

Other Income (Expense)

Interest Income. Interest income consists of income earned on our cash and investment balances. Our interest income has not 
been significant due to the levels of cash and investment balances and low interest earned on such balances. We anticipate that our 
interest income will continue to fluctuate depending on timing of payments from collaborative partners, our cash and investment 
balances, and interest rates.

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. See “Quantitative and Qualitative Disclosures About Market Risk – Foreign Currency Exchange 
Risk” below for additional information.

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. See “Note 3” of the consolidated financial 
statements for additional information.

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 have been derived from non-refundable upfront payments, funding for research and 

development services, and milestone payments under various collaboration agreements. In assessing the appropriate revenue 
recognition related to a collaboration agreement, we first determine whether an arrangement includes multiple elements, such as the 
delivery of intellectual property rights and research and development services. Revenues associated with multiple element 
arrangements are attributed to the various elements based on their relative fair values or are recognized as a single unit of accounting 
when relative fair values are not determinable.

62

Non-refundable upfront payments are recorded as deferred revenue on the balance sheet and are recognized as collaboration 

revenue over the estimated period of research performance that is consistent with the terms of the research and development 
obligations contained in the collaboration agreement. We need to make estimates as to what period the services will be delivered as 
these payments are deferred and amortized into collaboration revenue over the estimated period of our ongoing involvement. The 
actual period of our ongoing involvement may differ from the estimated period determined at the time the payment is initially received 
and recorded as deferred revenue. This may result in a different amount of revenue that should have been recorded in the period and a 
longer or shorter period of revenue amortization. When an estimated period changes, we amortize the remaining deferred revenue over 
the estimated remaining time to completion.

We  recognize  funding  related  to  full-time  equivalent  staffing  funded  through  collaboration  agreements  as  revenue on a 

gross basis as we perform or deliver such related services in accordance with the agreement terms, provided  that we will receive 
payment for such services upon standard payment terms.

We recognize revenue contingent upon our achievement of a milestone in its entirety, in the period the milestone is achieved, 
only if the milestone meets certain criteria and is considered to be substantive. Payments received upon the occurrence of milestones 
that are non-substantive are deferred and recognized as revenue over the estimated period of performance applicable to the associated 
collaborative agreement.

Research and development costs:

Research and development costs is a critical accounting estimate due to the magnitude of and the many assumptions that are 

required 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, 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 estimates of the work performed using an accrual basis of 
accounting. These estimates are based on patient enrollment, services provided and goods delivered, contractual terms and experience 
with similar contracts. We monitor these factors and adjust our estimates accordingly.

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.

We grant stock options to employees, directors and officers pursuant to our stock option plan. 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.

Prior to our initial public offering, or IPO, our shares did not have a readily available market; therefore, we lack company-
specific historical and implied volatility information. Consequently, we estimated the expected volatility of our stock options based on 
a combination of our available historical volatility information and a historical volatility analysis of peers that are similar with respect 
to industry, stage of development, size, and financial leverage. 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.

63

Results of Operations

Comparison of Years Ended December 31, 2017 and 2016

The following table summarizes the results of our operations for the years ended December 31, 2017 and 2016 together with 

changes in those items (in thousands):

Collaboration revenue
Royalties
Research and development expenses
General and administrative expenses
Other:

Interest income
Foreign exchange gain

Net loss

  $

  $

Year Ended December 31,

2017

2016

 $

309 
2 
25,573 
7,313 

 $

Change
2017 vs. 2016
    Increase/(Decrease)  
(1,458)
(34)
5,745 
521 

1,767 
36 
19,828 
6,792 

477 
1,394 
(30,704)  $

504 
1,316 
(22,997)  $

(27)
78 
(7,707)

Revenue

We recognized revenue of $0.3 million for the year ended December 31, 2017, compared to $1.8 million for the year ended 

December 31, 2016, a decrease of $1.5 million. In 2016, we recognized revenue related to the upfront payment from our March 2014 
genetics collaborative agreement with Genentech, which was fully recognized by March 2016. The remaining decrease was mainly 
due to the expiration of our full-time equivalent, or FTE, funding from Genentech in late 2016 as we shifted resources from supporting 
our collaborations to our proprietary programs, partially offset by a $0.25 million milestone payment recognized in July 2017 under 
the March 2014 genetics collaborative agreement with Genentech.

Research and Development Expenses

The following table summarizes research and development expenses for the years ended December 31, 2017 and 2016 together 

with changes in those items (in thousands):

Collaboration expenses
XEN801 expenses
XEN901 and Nav1.6 pre-clinical and discovery 
expenses
XEN1101 expenses
Pre-clinical, discovery and other program expenses
Total research and development expenses

  $

  $

 $

120 
1,353 

10,157 
5,885 
8,058 
25,573 

 $

Year Ended December 31,

2017

2016

Change
2017 vs. 2016
    Increase/(Decrease)  
(994)
(4,524)

 $

1,114 
5,877 

9,559 
— 
3,278 
19,828 

 $

598 
5,885 
4,780 
5,745  

Research and development expenses were $25.6 million for the year ended December 31, 2017, compared to $19.8 million for the 
year ended December 31, 2016. The increase of $5.7 million was primarily attributable to spending on our XEN1101 product candidate 
which was acquired in April 2017 and increased spending on our pre-clinical, discovery and other internal programs as well as on our 
XEN901 product candidate. These increases were partially offset by a decrease in XEN801 expenses, a product candidate which is no 
longer being developed, and a decrease in collaboration expenses.

General and Administrative Expenses

The following table summarizes general and administrative expenses for the years ended December 31, 2017 and 2016 together 

with changes in those items (in thousands):

General and administrative expenses

  $

7,313 

 $

64

Year Ended December 31,

2017

2016

Change
2017 vs. 2016
    Increase/(Decrease)  
521  

 $

6,792 

 
 
 
   
 
 
 
   
   
  
  
   
  
  
   
  
  
   
  
  
  
  
  
   
  
  
   
  
  
 
 
 
   
 
 
 
   
   
  
  
   
  
  
   
  
  
   
  
  
 
 
 
   
 
 
 
   
General and administrative expenses were $7.3 million for the year ended December 31, 2017, compared to $6.8 million for the 

year ended December 31, 2016. The increase of $0.5 million was primarily attributable to increased costs for business development 
activities and salaries and benefits.

Other Income

The following table summarizes our other income for the years ended December 31, 2017 and 2016 together with changes in 

those items (in thousands):

Other income:

  $

1,871 

 $

1,820 

Year Ended December 31,

2017

2016

Change
2017 vs. 2016
    Increase/(Decrease)  
51  

 $

Other income did not change significantly for the year ended December 31, 2017, as compared to the year ended December 31, 

2016.

Comparison of Years Ended December 31, 2016 and 2015

The following table summarizes the results of our operations for the years ended December 31, 2016 and 2015 together with 

changes in those items (in thousands):

Collaboration revenue
Royalties
Research and development expenses
General and administrative expenses
Other:

Interest income
Foreign exchange gain (loss)

Net income (loss)

  $

  $

Year Ended December 31,

2016

2015

 $

1,767 
36 
19,828 
6,792 

 $

Change
2016 vs. 2015
    Increase/(Decrease)  
(13,806)
32 
4,676 
(2,994)

15,573 
4 
15,152 
9,786 

504 
1,316 
(22,997)  $

542 
(6,933)   
(15,752)  $

(38)
8,249 
(7,245)

Revenue

We recognized revenue of $1.8 million for the year ended December 31, 2016, compared to $15.6 million for the year ended 
December 31, 2015, a decrease of $13.8 million. In 2015, we recognized revenues relating to the upfront payment from the former 
collaborative agreement with Teva which was fully recognized by December 2015 as well as revenue related to the upfront payment 
from our March 2014 collaborative agreement with Genentech which was fully recognized by March 2016. The remaining decrease 
was due to less FTE funding from Genentech as we shifted resources from supporting our collaborations to our proprietary programs.

Research and Development Expenses

The following table summarizes research and development expenses for the years ended December 31, 2016 and 2015 together 

with changes in those items (in thousands):

Year Ended December 31,

2016

2015

 $

Change
2016 vs. 2015
    Increase/(Decrease)  
(1,648)
1,431 
4,893 
4,676  

 $

2,762 
4,446 
7,944 
15,152 

Collaboration expense
XEN801 expenses
Pre-clinical and discovery program expenses
Total research and development expenses

  $

  $

1,114 
5,877 
12,837 
19,828 

 $

 $

65

 
 
 
   
 
 
 
   
 
 
 
   
 
 
 
   
   
  
  
   
  
  
   
  
  
   
  
  
  
  
  
   
  
  
   
  
 
 
 
   
 
 
 
   
   
  
  
   
  
  
Research and development expenses were $19.8 million for the year ended December 31, 2016, compared to $15.2 million for the 

year ended December 31, 2015. The increase of $4.7 million was primarily attributable to increased spending on our pre-clinical and 
discovery programs, mostly related to our Nav1.6 sodium channel inhibitor program, as well as additional expenses for our XEN801 
program which entered Phase 2 clinical development in February 2016, but which is no longer being developed. These increases were 
partially offset by a decrease in Genentech collaboration expenses.

General and Administrative Expenses

The following table summarizes general and administrative expenses for the years ended December 31, 2016 and 2015 together 

with changes in those items (in thousands):

General and administrative expenses

  $

6,792    $

9,786    $

Year Ended December 31,

2016

2015

Change
2016 vs. 2015
    Increase/(Decrease)  
(2,994)

General and administrative expenses were $6.8 million for the year ended December 31, 2016, compared to $9.8 million for the 

year ended December 31, 2015, a decrease of $3.0 million. During 2015, we recognized a $1.7 million expense due to a fair value 
adjustment upon the reclassification of stock option awards granted to directors and certain consultants to liability classification. The 
remaining change is due to one-time severance costs resulting from an internal reorganization and acceleration of stock-based 
compensation expense for certain consultants that occurred in 2015.

Other Income (Expense)

The following table summarizes our other income (expense) for the years ended December 31, 2016 and 2015 together with 

changes in those items (in thousands):

Other income (expense):

 $

1,820 

 $

(6,391)  $

Year Ended December 31,

2016

2015

Change
2016 vs. 2015
    Increase/(Decrease)  
8,211  

Other income was $1.8 million for the year ended December 31, 2016, compared to other expense of $6.4 million for the year 

ended December 31, 2015. The change of $8.2 million was primarily driven by the change in foreign exchange gain (loss) arising 
largely from the translation of cash and cash equivalents and marketable securities denominated in Canadian dollars to U.S. dollars. 
We recorded a foreign exchange gain of $1.3 million in 2016, compared to a $6.9 million foreign exchange loss in 2015, largely due 
to a 3% increase as compared to a 16% decrease in the value of the Canadian dollar for the years ended December 31, 2016 and 2015, 
respectively.

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 government funding. As 
of December 31, 2017, we had cash and cash equivalents and marketable securities of $43.7 million. In September 2016, we 
completed an underwritten public offering of 3,450,000 of our common shares at a public offering price of $7.50 per common share. 
We received approximately $24.3 million of proceeds, net of underwriting discounts and commissions but before offering expenses. In 
December 2017, we entered into a loan and security agreement with Silicon Valley Bank, or the Bank, for a term loan of up to $15.0 
million. The initial tranche of $7.0 million was funded in December 2017. For additional information regarding our loan and security 
agreement with the Bank, see “—Contractual Obligations and Commitments—Term Loan” below.

66

 
 
 
   
 
 
 
   
 
 
 
   
 
 
 
   
We have incurred significant operating losses since inception. We had a $30.7 million net loss for the year ended December 31, 

2017 and an accumulated deficit of $173.4 million from inception through December 31, 2017. 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; 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, or MUN, 1st Order Pharmaceuticals, Inc., or 1st Order, Valeant Pharmaceuticals International, Inc., or Valeant, 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.

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. Except for any obligations of our collaborators to make 
milestone payments under our agreements with them and additional borrowings under our loan and security agreement that may 
become available upon achievement of certain clinical and financial milestones, 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 common 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:

(cid:129)

(cid:129)

(cid:129)

(cid:129)

(cid:129)

(cid:129)

(cid:129)

(cid:129)

(cid:129)

(cid:129)

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 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 collaborators’ product candidates, and our future products, if 
any.

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.

67

Cash Flows

The following table shows a summary of our cash flows for the years ended December 31, 2017, 2016 and 2015 (in thousands):

Net cash used in operating activities
Net cash provided by (used in) investing activities
Net cash provided by financing activities

  $

Year Ended December 31,
2016
(19,567)  $
(47,842)   
23,964 

2017
(28,726)  $
24,294 
7,070 

2015
(18,103)
10,194 
278  

Operating Activities

Net cash used in operating activities totaled $28.7 million in 2017 as compared to $19.6 million in 2016 and $18.1 million in 
2015. The increase in cash used in operating activities was primarily related to an increase in research and development expenses, a 
decrease in revenue, and changes in working capital. Cash used in operating activities in 2015 includes a $3.2 million prepayment to 
Medpace, Inc., or Medpace, for future clinical development services.

Investing Activities

Net cash provided by investing activities totaled $24.3 million in 2017 as compared to $47.8 million used in 2016 and $10.2 

million provided in 2015. The change was driven by the maturity of marketable securities, net of purchases during 2017, as compared 
to the purchase of marketable securities in 2016 and the maturity of marketable securities during 2015.

Financing Activities

Net cash provided by financing activities totaled $7.1 million in 2017 as compared to $24.0 million in 2016 and $0.3 million in 

2015. In December 2017, we received net proceeds of $6.9 million from the issuance of a term loan and in September 2016, we 
received net proceeds of $23.8 million from the issuance of common shares in an underwritten public offering.

Contractual Obligations and Commitments

The following summarizes our significant contractual obligations as of December 31, 2017 (in thousands):

Contractual Obligations

Operating leases (1)
Term loan (2)
Total contractual obligations

Total

  $

  $

5,122 
7,000 
12,122 

 $

 $

Less Than
1 Year

 $

    1 To 3 Years     3 To 5 Years    
1,441 
700 
2,141 

2,456 
5,600 
8,056 

 $

 $

 $

1,225 
700 
1,925 

More Than
5 Years

 $

 $

— 
— 
—  

(1) Represents future minimum lease payments under an operating lease in effect as of December 31, 2017 for our current 

facility in Burnaby, British Columbia, Canada.

(2) Excluding interest payments and final payment fee of 6.5% of the principal amount.

Term Loan

In December 2017, we entered into a Loan and Security Agreement, or Loan Agreement, with the Bank, pursuant to which the 
Bank agreed to extend term loans to us with an aggregate principal amount of up to $15.0 million, in three tranches. We borrowed an 
initial tranche of $7.0 million.

The second tranche of $5.0 million, or the Second Tranche Advance, is available at our option at any time from the occurrence 

of the Tranche 2 Event through March 31, 2019. The third and final tranche of $3.0 million, or the Third Tranche Advance, is 
available at our option at any time from the occurrence of the Tranche 3 Event through September 30, 2019. The Tranche 2 Event 
means delivery by us to the Bank of evidence that we have, on or before March 31, 2019, (i) obtained net new capital of at least $12.5 
million and (ii) at least two programs in clinical development, at least one of which is in Phase 2. The Tranche 3 Event means delivery 
by us to the Bank of evidence that we have, on or before September 30, 2019, achieved positive Phase 2 data on at least one program.

68

 
 
 
 
 
 
   
   
 
   
  
   
  
  
 
 
   
 
   
  
  
  
  
Borrowings under the Loan Agreement accrues interest at a floating per annum rate of 0.5% above the prime rate, which interest 
is payable monthly commencing in January 2018. The initial tranche is interest only until September 30, 2018, followed by 30 months 
of equal principal and interest payments, maturing on March 31, 2021. If the second tranche is advanced, then both the first and 
second tranches will be interest only until March 31, 2019, followed by 24 months of equal principal and interest payments, maturing 
on March 31, 2021. The third tranche, if advanced, will be interest only until September 30, 2019, followed by 24 months of equal 
principal and interest payments, maturing on September 30, 2021. In addition, we are required to pay a final payment fee of 6.5% of 
the principal amount extended on the date of repayment of the outstanding term loan.

We may prepay all, but not less than all, of the loaned amount subject to a prepayment fee of 3.0% of the outstanding principal 

if prepaid prior to the first anniversary of the effective date of the Loan Agreement, 2.0% if prepaid on or after the first anniversary, 
but prior to the second anniversary, or 1.0%, if prepaid on or after the second anniversary but prior to the applicable maturity date. As 
security for its obligations under the agreement, we granted the Bank a first priority security interest on substantially all of our assets 
except our intellectual property and subject to certain other exceptions.

The Loan Agreement contains customary representations and warranties, events of default (including an event of default upon 

the occurrence of a material impairment on the Bank’s security interest over the collateral, and a material adverse change in our 
company) and affirmative and negative covenants, including, among others, covenants that limit or restrict our ability to incur 
indebtedness, grant liens, merge or consolidate, dispose of assets, make investments, make acquisitions, enter into certain transactions 
with affiliates, engage in any new line of business, pay dividends or make distributions, or repurchase stock, in each case subject to 
certain exceptions. Upon the occurrence and during the continuance of an event of default, a default interest rate will apply that is 
5.0% above the otherwise applicable interest rate.

In connection with the Loan Agreement, we issued a warrant to the Bank to purchase 50,411 of our common shares at a price 

per share of $2.43. The Bank will receive additional common shares exercisable pursuant to the warrant in connection with the second 
and third tranches, if and when advanced by the Bank. In no event will the number of common shares issuable pursuant to the exercise 
of the warrant exceed 108,023 in the aggregate. The warrant is immediately exercisable, has a 10-year term, and contains a cashless 
exercise provision.

The contractual obligations table above excludes the following material contractual commitments:

In August 2015, we entered into a priority access agreement with Medpace for the provision of certain clinical development 

services. Under the terms of the agreement, we committed to using Medpace non-exclusively for clinical development services over 
the five year term of the agreement. In consideration for priority access to Medpace resources and preferred service rates, we 
committed to $7.0 million of services over the term of the agreement, $1.7 million of which was prepaid upon signing of the 
agreement and an additional $1.3 million was paid in December 2015. Any portion of the $3.0 million payment made during 2015 that 
is not used within the first three years of the agreement term will be forfeited to Medpace. If we do not meet the commitment to retain 
Medpace for $7.0 million of services during the term of the agreement, we agreed to give Medpace the exclusive right to perform all of 
our 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 of the $7.0 million minimum commitment. See “Note 12(b)” and “Note 14” of the consolidated financial 
statements for additional information.

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 paid an upfront fee of $0.5 
million CAD and will be required to pay a low single-digit percentage royalty on net sales of any products developed and 
commercialized under the agreement.

In April 2017, we acquired XEN1101 (previously known as 1OP2198) from 1st Order pursuant to an asset purchase agreement. 
1st Order previously acquired 1OP2198 from an affiliate of Valeant, and we have assumed certain financial responsibilities under that 
agreement. Under the terms of the agreement, we paid an upfront fee of approximately $0.4 million and milestone payments in 2017 
totaling $0.7 million, which we expensed as research and development. Future potential payments to both 1st Order and Valeant 
include $1.0 million in clinical development milestones, up to $13.0 million in regulatory milestones, and up to approximately $33.6 
million in sales-based and other milestones, which includes a $1.5 million milestone that may be payable pre-commercially, plus a 
mid-to-high single-digit percentage royalty on commercial sales.

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. Under the terms of the agreement, we paid an upfront fee of $1.0 million, which 
we expensed as research and development. 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.

69

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 March 2, 2018, we had 18,002,499 common shares issued and outstanding and outstanding stock options to purchase an 

additional 2,306,997 common shares.

Recent Accounting Pronouncements 

In May 2014, the Financial Accounting Standards Board, or FASB, issued Accounting Standards Update, or ASU, 2014-09, 
Revenue from Contracts with Customers (ASC 606) to clarify the principles of recognizing revenue and to develop a common revenue 
standard that would remove inconsistencies in revenue requirements, leading to improved comparability of revenue recognition 
practices across entities and industries. The standard, as subsequently amended, stipulates that an entity should recognize revenue to 
depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects 
to be entitled in exchange for those goods or services. The new guidance will be effective for public entities for fiscal years and 
interim periods within those years, beginning after December 15, 2017. We plan to adopt the standard under the modified 
retrospective approach on January 1, 2018 and have identified one ongoing significant collaboration agreement with respect to 
revenue, the collaborative research and license agreement with Genentech, described in “Note 14” of our consolidated financial 
statements. We have evaluated the new guidance and do not expect a material impact on the Company’s financial statements as a 
result of the application of the guidance on revenue previously recognized under this agreement. 

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842): Recognition and Measurement of Financial Assets and 

Financial Liabilities. The update requires the recognition of lease assets and lease liabilities by lessees for those leases classified as 
operating leases under previous U.S. GAAP. The new guidance retains a distinction between finance leases and operating leases, with 
cash payments from operating leases classified within operating activities in the statement of cash flows. These amendments will be 
effective for public entities for fiscal years and interim periods within those years, beginning after December 15, 2018. We are 
currently evaluating the new guidance to determine the impact it will have on our consolidated financial statements.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

We are exposed to various market risks in the ordinary course of our business, including changes in interest rates and currency 

exchange rates. Market risk is the potential loss arising from adverse changes in interest rates and exchange rates.

Foreign Currency Exchange Risk

On January 1, 2015, our functional currency changed from the Canadian dollar to the U.S. dollar based on our analysis of the 

changes in the primary economic environment in which we operate.

The principal market risk we face is foreign currency exchange rate risk. We face this risk, in part, as a result of entering into 

transactions denominated in currencies other than U.S. dollars, particularly those denominated in Canadian dollars. We also hold non-
U.S. dollar denominated cash and cash equivalents, marketable securities, accounts receivable and accounts payable, which are 
denominated in Canadian dollars.

70

Changes in foreign currency exchange rates can create significant foreign exchange gains or losses to us. Our current foreign 
currency risk is with the Canadian dollar, as a majority of our non-U.S. dollar denominated expenses are denominated in Canadian 
dollars and a significant portion of our cash and cash equivalents and marketable securities are held in Canadian dollars. To limit our 
exposure to volatility in currency markets, we estimate our anticipated expenses that will be denominated in Canadian and U.S. dollars 
and then purchase a corresponding amount of Canadian or U.S. dollars at the current spot rate. Once these estimated expense amounts 
are acquired, we do not hedge our exposure and thus assume the risk of future gains or losses on the amounts of Canadian dollars held. 
At December 31, 2017, we held cash and cash equivalents and marketable securities of $15.6 million denominated in Canadian 
dollars. A hypothetical 10% increase (decrease) in the value of the Canadian dollar would result in a foreign exchange gain (loss) of 
$1.6 million being recorded in the Statement of Operations and Comprehensive Income (Loss) on the translation of these Canadian 
dollar cash and cash equivalent and marketable securities balances into the U.S. dollar functional currency.

Interest Rate Risk

An additional market risk we face is interest rate risk. We had cash and cash equivalents and marketable securities of 

$43.7 million as of December 31, 2017. The goals of our investment policy are liquidity and capital preservation; we do not enter into 
investments for trading or speculative purposes and have not used any derivative financial instruments to manage our interest rate 
exposure. We believe that we do 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 our cash and cash equivalents and marketable securities.

In addition, we had an outstanding balance of $7.0 million under our Loan Agreement as of December 31, 2017, of which $0.7 
million was due within 12 months. The interest rate on borrowings under the Loan Agreement with the Bank accrues at a floating per 
annum rate of 0.5% above the prime rate. A 10% change in interest rates during any of the periods presented would not have had a 
material impact on our consolidated financial statements.

71

Item 8.

Financial Statements and Supplementary Data

XENON PHARMACEUTICALS INC. 
Index to Consolidated Financial Statements 

Year ended December 31, 2017

Report of Independent Registered Public Accounting Firm.............................................................................................................

Consolidated Balance Sheets as of December 31, 2017 and 2016 ...................................................................................................

Consolidated Statements of Operations and Comprehensive Loss for the years ended December 31, 2017, 2016 and 2015 .........

Consolidated Statements of Shareholders’ Equity for the years ended December 31, 2017, 2016 and 2015 ..................................

Consolidated Statements of Cash Flows for the years ended December 31, 2017, 2016 and 2015 .................................................

Notes to Consolidated Financial Statements.....................................................................................................................................

Index

73

74

75

76

77

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72

 
Report of Independent Registered Public Accounting Firm

To the Stockholders 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, 
2017  and  2016,  the  related  consolidated  statements  of  operations  and  comprehensive  loss,  shareholders’  equity,  and  cash  flows  for 
each  of  the  years  in  the  three-year  period  ended  December 31,  2017,  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, 2017 and 2016, and the results of its operations and its cash flows for each of the years in the three-year 
period ended December 31, 2017, 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 and in accordance with the ethical requirements that are relevant to our audit of the financial statements in Canada.

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.

/s/ KPMG LLP
Chartered Professional Accountants

We have served as the Company’s auditor since 1999

Vancouver, British Columbia
March 7, 2018

73

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

Prepaid expenses, long-term
Property, plant and equipment, net (note 6)
Total assets

Liabilities and shareholders’ equity
Current liabilities:

Accounts payable and accrued expenses (note 7)
Loan payable, current portion (note 8)

Loan payable, long-term (note 8)

Shareholders’ equity:

Common shares, without par value; unlimited shares authorized; issued and
   outstanding: 17,998,420 (December 31, 2016 - 17,930,590) (note 9b)

Additional paid-in capital
Accumulated deficit
Accumulated other comprehensive loss

Total liabilities and shareholders’ equity

Collaboration agreements (note 11)
Commitments and contingencies (note 12)
Subsequent event (note 16)

The accompanying notes are an integral part of these consolidated financial statements. 

December 31,
2017

December 31,
2016

 $

 $

 $

 $
 $

20,486 
23,181 
438 
716 
44,821 
230 
1,070 
46,121 

3,383 
700 
4,083 
6,104 
10,187 

173,841 
36,471 
(173,388)
(990)
35,934 
46,121 

 $

 $

 $

 $
 $

17,095 
47,051 
200 
1,329 
65,675 
408 
1,404 
67,487 

3,586 
— 
3,586 
— 
3,586 

173,246 
34,326 
(142,681)
(990)
63,901 
67,487 

74

 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
  
  
  
  
  
  
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
  
  
  
  
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
  
  
    
 
  
  
    
 
  
  
    
 
  
  
    
 
XENON PHARMACEUTICALS INC.
Consolidated Statements of Operations and Comprehensive Loss
(Expressed in thousands of U.S. dollars except share and per share amounts)

Revenue:

Collaboration revenue (note 11)
Royalties

Operating expenses:

Research and development
General and administrative

Loss from operations
Other income (expense):

Interest income
Foreign exchange gain (loss)

Net loss and comprehensive loss
Net loss per common share (note 5):

Basic
Diluted

2017

Year Ended December 31,
2016

2015

 $

 $

309 
2 
311 

 $

1,767 
36 
1,803 

25,573 
7,313 
32,886 
(32,575)

477 
1,394 
(30,704)

19,828 
6,792 
26,620 
(24,817)

504 
1,316 
(22,997)

 $
 $

(1.71)
(1.72)

 $
 $

(1.48)
(1.48)

 $
 $

15,573 
4 
15,577 

15,152 
9,786 
24,938 
(9,361)

542 
(6,933)
(15,752)

(1.10)
(1.10)

Weighted-average common shares outstanding (note 5):

Basic
Diluted

17,985,061 
18,001,759 

15,493,474 
15,493,474 

14,281,837 
14,281,837  

The accompanying notes are an integral part of these consolidated financial statements. 

75

 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
  
  
  
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
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2017

Year Ended December 31,
2016

2015

 $

(30,704)

 $

(22,997)

 $

(15,752)

649 
11 
2,236 
(1,474)

(232)
613 
178 
(3)
— 
(28,726)

(315)
(28,007)
52,616 
24,294 

6,893 
177 
— 
7,070 
753 
3,391 
17,095 
20,486 

 $

864 
— 
2,161 
(1,300)

121 
571 
686 
484 
(157)
(19,567)

(279)
(47,563)
— 
(47,842)

— 
132 
23,832 
23,964 
1,889 
(41,556)
58,651 
17,095 

 $

740 

 $

341 

 $

25 

404 

1,038 
— 
3,729 
6,902 

(107)
(1,214)
(1,094)
17 
(11,622)
(18,103)

(551)
— 
10,745 
10,194 

— 
278 
— 
278 
(5,744)
(13,375)
72,026 
58,651 

659 

744  

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
Stock-based compensation
Unrealized foreign exchange (gain) loss
Changes in operating assets and liabilities:

Accounts receivable
Prepaid expenses, and other current assets
Prepaid expenses, long term
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 provided by (used in) investing activities

Financing activities:

Proceeds from issuance of term loan, net of issuance costs (note 8)
Issuance of common shares pursuant to exercise of stock options
Issuance of common shares, net of issuance costs (note 9a)
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 received

Supplemental disclosures of non-cash transactions:
Fair value of options exercised on a cashless basis

 $

 $

The accompanying notes are an integral part of these consolidated financial statements.

77

 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
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 British Columbia Business Corporations Act and 
continued federally in 2000 under the Canada Business Corporation Act, is a clinical stage biopharmaceutical company focused 
on developing innovative therapeutics to improve the lives of patients with neurological disorders. Building upon its extensive 
knowledge  of  human  genetics  and  diseases  caused  by  mutations  in  ion  channels,  known  as  channelopathies,  the  Company  is 
advancing a novel product pipeline of central nervous system therapies to address areas of high unmet medical need, such as 
epilepsy and pain.

The  Company  has  incurred  significant  operating  losses  since  inception.  As  of  December 31,  2017,  the  Company  had  an 
accumulated deficit of $173,388 and a $30,704 net loss for the year ended December 31, 2017. 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 and equity or debt financings. The continuation of 
the 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. 

The  accompanying  audited  consolidated  financial  statements  of  the  Company  have  been  prepared  in  accordance  with  United 
States generally accepted accounting principles (“U.S. GAAP”).

The  Company  has  one  wholly-owned  subsidiary  as  at  December 31,  2017,  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, the timing of revenue recognition, the determination 
of stock-based compensation and the amounts recorded as accrued liabilities. Actual results could differ materially from 
those 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. 

(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. 

(c) Marketable securities: 

Marketable securities are investments with original maturities exceeding three months, and have remaining maturities of 
less than one year. Marketable securities accrue interest based on a fixed interest rate for the term. The carrying value of 
marketable securities is recorded at cost plus accrued interest, which approximates their fair value.

78

(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, 2017 and 2016. 

(g) 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.

Collaborators whose collaboration research and development revenue accounted for 10% or more of total revenues were 
as follows:

Genentech
Teva

Year ended December 31,
2016

2015

2017

 $

 $

250 
59 

 $

1,651 
116 

4,563 
11,010  

(h)

Financial instruments and fair value: 

We measure certain financial instruments and other items at fair value. 

To determine the fair value, we use 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). 

(cid:129)

(cid:129)

(cid:129)

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. 

79

 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
 
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. As quoted prices for the liability classified stock options, included 
in the consolidated balance sheet as accounts payable and accrued expenses, are not readily available, the Company has 
used a Black-Scholes pricing model to estimate fair value using Level 3 inputs as defined above. The Company’s term 
loan,  which  was  finalized  in  December  2017,  bears  interest  at  a  rate  that  approximates  prevailing  market  rates  for 
instruments with similar characteristics and, accordingly, the carrying value of the loan approximates fair value.

(i)

Revenue recognition: 

The Company recognizes revenue when all of the following criteria are met: (i) persuasive evidence of an arrangement 
exists; (ii) delivery has occurred or services have been rendered; (iii) the Company’s price to the collaborator is fixed or 
determinable; and (iv) collectability is reasonably assured. 

The Company generates revenue primarily through collaboration agreements. 

Under these collaboration agreements, the Company is eligible to receive non-refundable upfront payments, funding for 
research  and  development  services,  milestone  payments,  other  contingent  payments  and  royalties.  In  assessing  the 
appropriate  revenue  recognition  related  to  a  collaboration  agreement,  the  Company  first  determines  whether  an 
arrangement includes multiple elements, such as the delivery of intellectual property rights and research and development 
services.  Revenues  associated  with  multiple  element  arrangements  are  attributed  to  the  various  elements  based  on  their 
relative fair values or are recognized as a single unit of accounting when relative fair values are not determinable. 

Non-refundable  upfront  payments  are  recorded  as  deferred  revenue  on  the  balance  sheet  and  are  recognized  as 
collaboration revenue over the estimated period of research performance that is consistent with the terms of the research 
and development obligations contained in the collaboration agreement. The Company periodically reviews the estimated 
period of performance based on the progress made under each arrangement. 

The  Company  recognizes  funding  related  to  full-time  equivalent  staffing  funded  through  collaboration  agreements  as 
revenue on a gross basis as it performs or delivers such related services in accordance with the agreement terms, provided 
that it will receive payment for such services upon standard payment terms. 

The  Company  recognizes  revenue  contingent  upon  its  achievement  of  a  milestone,  in  its  entirety  in  the  period  the 
milestone is achieved, only if the milestone meets certain criteria and is considered to be substantive. Payments received 
upon  the  occurrence  of  milestones  that  are  non-substantive  are  deferred  and  recognized  as  revenue  over  the  estimated 
period of performance applicable to the associated collaborative agreement.

(j)

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,  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 estimates of the work performed using the accrual basis of 
accounting. These estimates are based on patient enrollment, services provided and goods delivered, contractual terms and 
experience with similar contracts. The Company monitors these factors and adjusts the estimates accordingly. 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. 

(k)

Stock-based compensation: 

The Company grants stock options to employees, directors and officers pursuant to a stock option plan described in note 
9c.

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.

80

(l)

Liability classified stock options:

Stock  option  awards  accounted  for  under  Accounting  Standards  Codification  (“ASC”)  718  -  Compensation  -  Stock 
Options (“ASC 718”) that provide for an exercise price that is not denominated in: (a) the currency of the market in which 
a  substantial  portion  of  the  Company’s  equity  securities  trade,  (b)  the  currency  in  which  the  optionee’s  pay  is 
denominated,  or  (c)  the  Company’s  functional  currency,  are  classified  as  liabilities.  Following  the  change  in  functional 
currency on January 1, 2015, described in (m) below, options granted to members of the Company’s board of directors 
and certain consultants with exercise prices denominated in Canadian dollars were subject to liability accounting, resulting 
in a reclassification of these awards from additional paid-in capital to liability classified stock options.

In  September  2015,  the  Company  modified  certain  compensation  arrangements  to  be  denominated  in  Canadian  dollars. 
Following  this  modification,  options  denominated  in  Canadian  dollars  that  were  granted  to  members  of  the  Company’s 
board of directors and certain consultants met the criteria for equity classification with fair value at the modification date 
calculated  using  the  Black-Scholes  option-pricing  model  and  reclassified  from  liability  classified  stock  options  back  to 
additional paid-in capital. The modified awards are accounted for as equity awards from the date of modification.

Stock options awards accounted for under ASC 815 - Derivatives and Hedging (“ASC 815”), that provide for an exercise 
price which is not denominated in the Company’s functional currency are required to be classified as liabilities. Certain 
stock option awards with exercise prices denominated in Canadian dollars are accounted for under ASC 815 and classified 
as liabilities. As of December 31, 2017, such liability classified stock options totaled $37 (2016 – $261) and are included 
in the consolidated balance sheet as accounts payable and accrued expenses.

Liability  classified  stock  options  are  re-measured  at  fair  value  using  the  Black-Scholes  option-pricing  model  at  each 
balance sheet date until exercised or cancelled, with changes in fair value recognized as additional paid-in capital for ASC 
718  awards  or  general  and  administrative  stock-based  compensation  expense  for  ASC  815  awards  for  the  period.  The 
Black-Scholes  option  pricing  model  uses  various  inputs  to  measure  fair  value,  including  fair  value  of  the  Company’s 
underlying  common  shares  at  the  grant  date,  expected  term,  expected  volatility,  risk-free  interest  rate  and  expected 
dividend yield of the Company’s common shares.

(m) Foreign currency translation: 

The Company’s functional and reporting currency is the U.S. dollar. The functional currency of the Company changed to 
U.S.  dollars  from  Canadian  dollars  on  January  1,  2015  based  on  management’s  analysis  of  the  changes  in  the  primary 
economic environment in which the Company operates. The Company’s reporting currency did not change. The change in 
functional currency is accounted for prospectively from January 1, 2015.

For periods commencing January 1, 2015, monetary assets and liabilities denominated in foreign currencies are translated 
into U.S. dollars using exchange rates in effect at the balance sheet date. Opening balances related to non-monetary assets 
and liabilities are based on prior period translated amounts, and nonmonetary assets and nonmonetary liabilities incurred 
after January 1, 2015 are translated at the approximate exchange rate prevailing at the date of the transaction. Revenue and 
expense  transactions  are  translated  at  the  approximate  exchange  rate  in  effect  at  the  time  of  the  transaction.  Foreign 
exchange gains and losses are included in the consolidated statement 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) Deferred tenant inducements: 

Deferred tenant inducements, which include leasehold improvements paid for by the landlord and free rent, are included 
in the consolidated balance sheet as accounts payable and accrued expenses and recognized as a reduction of rent expense 
on a straight-line basis over the term of the lease.

(p)

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.

81

(q) Comparative figures:

Certain comparative figures have been reclassified to conform to the consolidated financial statement presentation adopted 
for the current year.

4.

Future changes in accounting policies: 

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-09, 
Revenue from Contracts with Customers (ASC 606) to clarify the principles of recognizing revenue and to develop a common 
revenue standard that would remove inconsistencies in revenue requirements, leading to improved comparability of revenue 
recognition practices across entities and industries. The standard, as subsequently amended, stipulates that an entity should 
recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration 
to which the entity expects to be entitled in exchange for those goods or services. The new guidance will be effective for public 
entities for fiscal years and interim periods within those years, beginning after December 15, 2017. The Company plans to adopt 
the standard under the modified retrospective approach on January 1, 2018 and has identified one ongoing significant 
collaboration agreement with respect to revenue, the collaborative research and license agreement with Genentech, a member of 
the Roche Group, described in note 11b. The Company has evaluated the new guidance and does not expect a material impact 
on the Company’s financial statements as a result of the application of the guidance on revenue previously recognized under this 
agreement. In addition, application of the new guidance is also not expected to result in a material change in the amount or 
timing of revenues recognized, as compared to prior practice, as it relates to the milestone and royalty payments the Company is 
eligible to receive in future periods under this agreement. 

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842): Recognition and Measurement of Financial Assets and 
Financial Liabilities. The update requires the recognition of lease assets and lease liabilities by lessees for those leases classified 
as operating leases under previous U.S. GAAP. The new guidance retains a distinction between finance leases and operating 
leases, with cash payments from operating leases classified within operating activities in the statement of cash flows. These 
amendments will be effective for public entities for fiscal years and interim periods within those years, beginning after 
December 15, 2018. The Company is currently evaluating the new guidance to determine the impact it will have on the 
Company’s consolidated financial statements.

5.

Net income (loss) per common share:

Basic net income (loss) per common share is computed by dividing the net income (loss) by the weighted average number of 
common shares outstanding for the period. Diluted net income (loss) per common share is computed by adjusting the numerator 
and denominator of the basic net income (loss) per share calculation for the potential impact of dilutive securities.

For the year ended December 31, 2017, 2,172,034 stock options and warrants were excluded from the calculation of diluted net 
income per common share as their inclusion would be anti-dilutive. For the years ended December 31, 2016 and December 31, 
2015, all stock options were anti-dilutive and were excluded from the diluted weighted average common shares outstanding for 
those periods.

The following is a reconciliation of the numerators and denominators of basic and diluted net loss per common share:

Numerator:
Net loss used to compute net loss per common share:

Basic

  $

(30,704)  $

(22,997)  $

(15,752)

Year Ended December 31,
2016

2015

2017

Adjustment for change in fair value of liability 
classified stock options

Diluted
Denominator:
Weighted average number of common shares:

Basic

Adjustment for dilutive effect of stock options

Diluted

Net loss per common share - basic
Net loss per common share - diluted

82

(187)   
(30,891)  $

—     
(22,997)  $

— 
(15,752)

  $

16,698     

    17,985,061      15,493,474      14,281,837 
— 
    18,001,759      15,493,474      14,281,837 
(1.10)
  $
(1.10)
  $

(1.48)  $
(1.48)  $

(1.71)  $
(1.72)  $

—     

 
 
 
 
 
   
   
 
   
      
      
  
     
       
       
 
   
   
      
      
  
   
      
      
  
   
6.

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

7.

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

8.

Term Loan: 

December 31,

2017

2016

 $

6,984 
1,043 
2,311 
6,370 
(15,638)   
 $
1,070 

6,789 
1,045 
2,283 
6,370 
(15,083)
1,404  

December 31,

2017

2016

1,253 
1,017 
817 
252 
44 
3,383 

 $

 $

1,463 
872 
1,029 
93 
129 
3,586  

 $

 $

 $

 $

On December 18, 2017, the Company entered into a Loan and Security Agreement (the “Loan Agreement”) with Silicon Valley 
Bank (the “Bank”), pursuant to which the Bank agreed to extend term loans to the Company with an aggregate principal amount 
of up to $15,000, in three tranches (the “Term Loans”). The Company borrowed an initial tranche of $7,000, with the remaining 
$8,000 available to be drawn in two separate tranches, at the Company’s option, subject to the achievement of certain clinical 
and financial milestones.

The  Loan  Agreement  accrues  interest  at  a  floating  per  annum  rate  of  0.5%  above  the  prime  rate,  and  is  payable  monthly 
commencing  in  January  2018.  The  initial  tranche  is  interest  only  until  September  30,  2018,  followed  by  30  months  of  equal 
principal and interest payments, maturing on March 31, 2021. If the second tranche is advanced, then both the first and second 
tranches will be interest only until March 31, 2019, followed by 24 months of equal principal and interest payments, maturing 
on March 31, 2021. The third tranche, if advanced, will be interest only until September 30, 2019, followed by 24 months of 
equal  principal  and  interest  payments,  maturing  on  September  30,  2021.  In  addition,  the  Company  is  required  to  pay  a  final 
payment fee of 6.5% of the principal amount extended on the date of repayment of the Term Loans, which is being accreted and 
amortized into interest expense using the effective interest rate method over the term of the loan.

The Company may prepay all, but not less than all, of the loaned amount subject to a prepayment fee of 3.0% of the outstanding 
principal if prepaid prior to the first anniversary of the effective date of the Loan Agreement, 2.0% if prepaid on or after the first 
anniversary, but prior to the second anniversary, or 1.0%, if prepaid on or after the second anniversary but prior to the applicable 
maturity date. As security for its obligations under the Loan Agreement, the Company granted the Bank a first priority security 
interest on substantially all of the Company’s assets except its intellectual property and subject to certain other exceptions. 

The Loan Agreement contains customary representations and warranties, events of default (including an event of default upon 
the occurrence of a material impairment on the Bank’s security interest over the collateral, and a material adverse change of the 
Company)  and  affirmative  and  negative  covenants,  including,  among  others,  covenants  that  limit  or  restrict  the  Company’s 
ability  to  incur  indebtedness,  grant  liens,  merge  or  consolidate,  dispose  of  assets,  make  investments,  make  acquisitions,  enter 
into certain transactions with affiliates, engage in any new line of business, pay dividends or make distributions, or repurchase 
stock,  in  each  case  subject  to  certain  exceptions.  Upon  the  occurrence  and  during  the  continuance  of  an  event  of  default,  a 
default interest rate will apply that is 5.0% above the otherwise applicable interest rate.

83

 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
  
  
In  connection  with  the  Loan  Agreement,  the  Company  issued  a  warrant  to  the  Bank  to  purchase  50,411  of  the  Company’s 
common  shares  at  a  price  per  share  of  $2.43.  The  Bank  will  receive  additional  common  shares  exercisable  pursuant  to  the 
warrant in connection with the second and third tranches, if and when advanced by the Bank. In no event will the number of 
common shares issuable pursuant to the exercise of the warrant exceed 108,023 in the aggregate. The warrant is immediately 
exercisable, has a 10-year term, contains a cashless exercise provision, and is classified in equity. The relative fair value of the 
warrant was $100. 

The initial tranche proceeds of $7,000 were allocated based on the relative fair values of the debt instrument and the warrant 
instrument. The fair value of the warrant and the closing costs were recorded as debt discounts and are being amortized using 
the effective interest rate method over the term of the loan. The Company determined the effective interest rate on the initial 
tranche of the loan to be 9.25%. Amortization of the debt discount was $11 for the year ended December 31, 2017.

Interest expense was $24 for the year ended December 31, 2017.

The outstanding loan and unamortized debt discount balances are as follows:

Term loan
Less: unamortized discount on loan
Less: current portion
Accrued portion of final payment fee
Loan payable, long-term

December 31,
2017

7,000 
(203)
(700)
7 
6,104  

 $

 $

Scheduled principal payments on outstanding debt, excluding the final payment fee of $455, as of December 31, 2017, are as 
follows:

2018
2019
2020
2021
Total

9.

Share capital: 

(a)

Financing:

   $

   $

700 
2,800 
2,800 
700 
7,000  

On September 13, 2016, the Company completed an underwritten public offering of 3,450,000 of its common shares at a 
public offering price of $7.50 per common share. The Company received approximately $24.3 million of proceeds, net of 
underwriting discounts and commissions but before offering 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:

On June 25, 2014, the shareholders of the Company approved the 2014 Equity Incentive Plan (the “2014 Plan”) which 
permits the grant of stock-based compensation awards to directors, officers, employees and consultants of the Company. 
The  Company’s  pre-existing  stock  option  plan  (the  “Amended  and  Restated  Stock  Option  Plan”)  was  limited  to  the 
granting  of  stock  options  as  equity  incentive  awards  whereas  the  2014  Plan  also  allows  for  the  issuance  of  restricted 
shares, restricted share units, share appreciation rights and performance shares. 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 provided for the grant of options for the purchase of common shares to 
directors, officers, employees and consultants prior to the Company’s initial public offering (“IPO”). The 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 Amended and Restated Stock Option Plan will continue to govern the options 
granted thereunder.

84

 
 
 
 
 
 
  
  
  
 
 
    
 
    
 
    
 
Under the 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 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. As of December 31, 2017, a total of 30,847 
stock options remain to be granted under the 2014 Plan. The number of common shares available for issuance under the 
2014 Plan was increased by 700,000 in January 2018 as approved by the Board in accordance with the terms of the 2014 
Plan.

Summary of stock option activity is as follows: 

Outstanding, January 1, 2015
Granted
Exercised
Forfeited, cancelled or expired
Outstanding, December 31, 2015
Granted
Exercised
Forfeited, cancelled or expired
Outstanding, December 31, 2016
Granted
Exercised(1)
Forfeited, cancelled or expired
Outstanding, December 31, 2017
Exercisable, December 31, 2017

  Number of

 Weighted Average Exercise Price 

  Options
   1,484,218 
529,288 
(270,254)   
(21,780)   

   1,721,472 
323,794 
(121,292)   
(13,151)   

   1,910,823 
620,950 
(71,006)   
(120,862)   

   2,339,905 
   1,439,301 

CAD $

U.S. $

4.88 
18.73 
4.66 
11.21 
9.62 
9.79 
3.67 
14.98 
9.84 
8.69 
3.72 
9.06 
9.32 
8.91 

4.20 
14.67 
3.65 
8.78 
6.95 
7.39 
2.77 
11.31 
7.32 
6.69 
2.86 
6.98 
7.41 
7.08 

  Aggregate
 Intrinsic Value 
15,551 

2,426 

1,880 

568 

4,464 

108 

159 
159  

(1) During  the  year  ended  December 31,  2017,  63,425  (2016  –  47,413)  stock  options  were  exercised  for  the  same  number  of 
common shares in exchange for cash. In the same period, the Company issued 4,405 (2016 – 47,841) common shares for the 
cashless exercise of 7,581 (2016 – 73,879) stock options.

The following table summarizes the stock options outstanding and exercisable at December 31, 2017:

Options Outstanding

Options Exercisable

Range of Exercise Prices
U.S. $
$2.12 - $2.95
$2.96 - $3.04
$3.05 - $7.44
$7.45 - $7.73
$7.74 - $8.49
$8.50 - $17.70
$17.71 - $21.82

Weighted
Average
Remaining
Contractual 
Life
(years)

Number of
Options
Outstanding   

227,725   
514,021   
273,400   
310,825   
458,936   
226,608   
328,390   
   2,339,905   

Weighted Average
Exercise Price
   CAD $     U.S. $    
5.05    2.67     2.13   
2.22    3.74     2.97   
9.36    5.25     4.18   
8.09    9.52     7.57   
8.83    10.46     8.32   
6.44    12.11     9.63   
7.21    22.34     17.77   
6.51    9.32     7.41   

Number of
Options Exercisable  

Weighted Average
Exercise Price
   CAD $     U.S. $  
226,675    2.67     2.12 
514,021    3.74     2.97 
30,515    8.73     6.94 
158,605    9.53     7.58 
52,106    9.84     7.82 
210,494    11.81     9.39 
246,885    22.34     17.77 
1,439,301    8.91     7.08  

At December 31, 2017, there were 1,439,301 options exercisable with a weighted average remaining contractual life as at 
December 31, 2017 of 5.04 years.

85

 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
 
  
 
 
  
  
 
    
  
 
  
  
  
  
  
  
  
 
A summary of the Company’s non-vested stock option activity and related information for the year ended December 31, 
2017 is as follows: 

Non-vested, January 1, 2017
Granted
Vested
Forfeited and cancelled
Non-vested, December 31, 2017

 Number of Options   Weighted Average Grant Date Fair Value 
CAD $

USD $

618,811    
620,950    
(274,580)   
(64,577)   
900,604    

9.58 
6.51 
9.68 
7.46 
7.12 

7.13 
5.02 
7.45 
5.74 
5.66  

The aggregate fair value of options vested during the year ended December 31, 2017 was $2,047 (2016 – $3,220, 2015 – 
$999).

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. Prior to the Company’s IPO in November 
2014,  the  Company’s  shares  did  not  have  a  readily  available  market;  therefore,  the  Company  lacks  company-specific 
historical and implied volatility information. Consequently, the expected volatility of stock options was estimated based 
on  a  combination  of  the  Company’s  available  historical  volatility  information  and  historical  volatility  analysis  of  peers 
that were similar to the Company with respect to industry, stage of life cycle, size, and financial leverage. 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

Years ended December 31
2016

2015

2017

2.35%   
80%   

7.37 
0.00%   
 $
5.02 

1.58%   
75%   

6.22 
0.00%   
 $
4.94 

1.75%
75%

6.23 
0.00%
9.83  

 $

Stock-based compensation expense is classified in the consolidated statements of operations and comprehensive income 
(loss) as follows:

Research and development
General and administrative

Years ended December 31,
2016

2015

2017

 $

 $

985 
1,251 
2,236 

 $

 $

874 
1,287 
2,161 

 $

 $

624 
3,105 
3,729  

As of December 31, 2017, the unrecognized stock-based compensation cost related to the non-vested stock options was 
$4,251, which is expected to be recognized over a weighted-average period of 2.37 years. 

10. Concentrations of market risk:

(a)

Foreign currency risk: 

At December 31, 2017, the Company had U.S. dollar denominated cash and cash equivalents and marketable securities of 
$28,028 (December 31, 2016 – $35,859) and Canadian denominated cash and cash equivalents and marketable securities 
of CAD$19,619 (December 31, 2016 – CAD$37,980).

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.

86

 
 
 
    
   
 
 
 
  
  
  
  
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
 
 
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  significant  portion  of  cash  and  cash  equivalents  and  marketable 
securities are held in Canadian dollars. To limit the Company’s exposure to volatility in currency markets, management 
estimates anticipated expenses that will be denominated in Canadian and U.S. dollars and then purchases a corresponding 
amount  of  Canadian  or  U.S.  dollars  at  the  current  spot  rate.  Once  these  estimated  expense  amounts  are  acquired,  the 
Company  does  not  hedge  its  exposure  and  thus  assumes  the  risk  of  future  gains  or  losses  on  the  amounts  of  Canadian 
dollars held.

(b)

Interest Rate Risk:

At  December 31,  2017,  the  Company  had  cash  and  cash  equivalents  and  marketable  securities  of  $43,667.  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.

The Company had a total outstanding loan balance of $7,000 as of December 31, 2017, of which $700 was due within 12 
months. The interest rate on borrowings under the Loan Agreement with the Bank accrues at a floating per annum rate of 
0.5% above the prime rate.

11. Collaboration agreements:

The  Company  has  entered  into  a  number  of  collaboration  agreements  with  multiple  deliverables  under  which  it  may  have 
received non-refundable upfront payments. The Company generally recognizes revenue from non-refundable upfront payments 
ratably over the term of its estimated period of performance of research under its collaboration agreements in the event that such 
arrangements represent a single unit of accounting.

The collaborations may also include contractual milestone payments, which relate to the achievement of pre-specified research, 
development,  regulatory  and  commercialization  events.  The  milestone  events  coincide  with  the  progression  of  product 
candidates  from  research  and  development,  to  regulatory  approval  and  through  to  commercialization.  The  process  of 
successfully discovering a new product candidate, having it selected by the collaborator for development and having it approved 
and  ultimately  sold  for  a  profit  is  highly  uncertain.  As  such,  the  milestone  payments  that  the  Company  may  earn  from  its 
collaborators involve a significant degree of risk to achieve.

Research and development milestones in the Company’s collaboration agreements may include the following types of events:

(cid:129)

(cid:129)

(cid:129)

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 or development events.

Regulatory milestone payments may include the following types of events:

(cid:129)

(cid:129)

filing of regulatory applications for marketing approval in the U.S., Europe or Japan, including investigational new drug 
(“IND”) applications and new drug applications (“NDA”); 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.

87

(a)

Teva Pharmaceutical Industries Ltd. (“Teva Pharmaceutical”) collaborative development and license agreement:

In  December  2012,  the  Company  entered  into  a  collaborative  development  and  license  agreement  with  Teva 
Pharmaceutical,  through  its  subsidiary,  Ivax  International  GmbH,  pursuant  to  which  the  Company  granted  Teva 
Pharmaceutical  an  exclusive  worldwide  license  to  develop  and  commercialize  certain  products,  including  TV-45070 
(formerly  XEN402).  On  March  7,  2018,  the  Company  entered  into  an  agreement  to  terminate  the  collaborative 
development  and  license  agreement,  see  subsequent  event  note  16.  Under  the  terms  of  the  original  agreement,  Teva 
Pharmaceutical  paid  the  Company  an  upfront  fee  of  $41,000.  Teva  Pharmaceutical  funded  all  development  costs  with 
respect  to  the  licensed  products.  In  addition,  Teva  Pharmaceutical  provided  funding  to  the  Company  for  certain  of  the 
Company’s  full-time  equivalents  (“FTEs”)  performing  the  research  collaboration  plan.  The  Company  identified  several 
deliverables under the agreement with Teva Pharmaceutical, including exclusive licenses to compounds and non-exclusive 
licenses  to  companion  diagnostic  products,  a  commitment  to  participate  in  a  joint  steering  committee  and  research  and 
development services to be performed by the Company on behalf of Teva Pharmaceutical. The Company concluded that 
the licenses did not have stand-alone value to Teva Pharmaceutical without the Company’s technical expertise and joint 
steering  committee  participation  during  the  initial  three-year  period;  therefore,  the  Company  recognized  the  upfront 
payment as revenue ratably over the three-year period ended December 31, 2015.

(b) 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. (“Roche”) 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, 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 provided funding 
to the Company for certain of the Company’s FTEs performing the research collaboration plan. The Company identified 
several deliverables under the agreement with Genentech, including exclusive licenses to compounds and non-exclusive 
licenses to diagnostic products, a commitment to participate in a joint steering committee and research and development 
services to be performed by the Company on behalf of Genentech. The Company concluded that the licenses did not have 
stand-alone  value  to  Genentech  without  the  Company’s  technical  expertise  and  joint  steering  committee  participation 
during the initial three year period; therefore, the Company recognized the upfront payment as revenue ratably over the 
three-year period ended December 22, 2014.

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 
Company  believes  that  the  potential  milestone  payments  for  pre-clinical,  clinical  and  regulatory  milestones  under  this 
agreement  are  substantive  and  at  risk  at  inception  of  this  agreement,  and,  as  such,  expects  that  these  future  milestone 
payments  will  be  recognized  as  revenue  in  the  period  that  each  milestone  is  achieved.  In  the  year  ended  December 31, 
2017, no milestone payments have been recognized (2016 – $nil; 2015 – $nil).

The Company believes that the potential sales-based milestone payments under this agreement are not substantive as the 
Company does not expect to contribute effort to their achievement and expects such sales-based milestones will generally 
be  achieved  after  the  period  of  substantial  involvement  under  the  collaboration.  Therefore,  the  Company  expects  that 
future sales-based contingent consideration milestone payments will be recognized as revenue when such milestones are 
achieved,  assuming  all  other  revenue  recognition  criteria  are  met.  To  date,  no  such  milestone  payments  have  been 
recognized.

In March 2014, the Company entered into a new agreement with Genentech for pain genetics, with a focus 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. The Company is eligible to receive additional 
milestone payments totaling up to $1,500.

88

The  Company  identified  several  deliverables  under  this  agreement  with  Genentech,  including  non-exclusive  licenses  to 
certain  intellectual  property  controlled  by  the  Company,  a  commitment  to  participate  in  a  joint  steering  committee  and 
collaborative research services to be performed by the Company. The Company concluded that the licenses did not have 
stand-alone  value  to  Genentech  without  the  Company’s  technical  expertise  and  joint  steering  committee  participation 
during  the  initial  two  year  period;  therefore,  the  Company  recognized  the  upfront  payment  as  revenue  ratably  over  the 
two-year period ended March 18, 2016.

The Company believes that the potential milestone payments under this agreement are substantive and at risk at inception 
of this agreement, and, as such, expects that these future milestone payments will be recognized as revenue in the period 
that  each  milestone  is  achieved.  In  the  year  ended  December 31,  2017,  a  $250  milestone  payment  has  been  recognized 
(2016 – $nil; 2015 – $250).

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.

The  following  table  is  a  summary  of  the  revenue  recognized  from  the  Company’s  collaborations  for  each  of  the  years 
ended December 31, 2017, 2016 and 2015.

Teva:

Recognition of upfront payment
Research funding

Genentech:

Recognition of upfront payment
Research funding
Milestone payments
Total collaboration revenue

12. Commitments and contingencies:

(a)

Lease commitments:

Year Ended December 31,
2016

2015

2017

 $

 $

 $

— 
59 

— 
— 
250 
309 

 $

 $

— 
116 

10,897 
112 

157 
1,494 
— 
1,767 

 $

725 
3,589 
250 
15,573  

The  Company  entered  into  an  amended  lease  agreement  for  research  laboratories  and  office  space  in  Burnaby,  British 
Columbia, Canada for a 120-month term from April 1, 2012 to March 31, 2022, which included an element of free rent 
and tenant inducement that is amortized over the term of the lease.

Lease expense for the year ended December 31, 2017 was $1,079 (2016 – $936, 2015 – $917). Future minimum annual 
lease payments under existing operating lease commitments are as follows:

Year ending December 31:

2018
2019
2020
2021
2022
Total

1,225 
1,227 
1,229 
1,162 
279 
5,122  

   $

(b)

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 the terms of the agreement, the Company has committed to using Medpace non-exclusively 
for clinical development services over the five year term of the agreement. In consideration for priority access to Medpace 
resources and preferred service rates, the Company has committed to $7,000 of services over the term of the agreement, 
$3,000  of  which  was  paid  in  the  year  ended  December  31,  2015.  Of  the  amounts  paid  by  the  Company  in  2015  in 
connection with the priority access agreement, an aggregate of $2,770 has been recorded as expenses to date for services 
rendered, $nil has been classified as current prepaid expenses (2016 – $392) and $230 has been classified as long-term 
prepaid expenses (2016 – $408) for the provision of future services as at December 31, 2017.

89

 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
    
  
 
    
 
    
 
    
 
    
 
    
 
(c)

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  paid  an  upfront  fee  of  $500  CAD  and  will  be  required  to  pay  a  low  single-digit  percentage 
royalty on net sales of any products developed and commercialized under the agreement.

(d) 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. 1st Order previously acquired 1OP2198 from an affiliate of Valeant Pharmaceuticals International, 
Inc. (“Valeant”), and the Company has assumed certain financial responsibilities under that agreement. Under the terms of 
the  agreement,  the  Company  paid  an  upfront  fee  of  $350  and  milestone  payments  in  2017  totaling  $700,  which  was 
expensed as research and development. Future potential payments to both 1st Order and Valeant include $1,000 in clinical 
development  milestones,  up  to  $13,000  in  regulatory  milestones,  and  up  to  approximately  $33,600  in  sales-based  and 
other  milestones,  which  includes  a  $1,500  milestone  that  may  be  payable  pre-commercially,  plus  a  mid-to-high  single-
digit percentage royalty on commercial sales.

(e)

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.  Under  the  terms  of  the  agreement,  the  Company 
paid  an  upfront  fee  of  $1,000,  which  was  expensed  as  research  and  development.  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.

(f)

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.

13.

Income taxes:

Income  tax  (recovery)  expense  varies  from  the  amounts  that  would  be  computed  by  applying  the  expected  Canadian  and 
provincial statutory income tax rate of 26% (2016 – 26%, 2015 – 26%) 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
Financing fees in equity
Effect of tax rate increases
Other
Income tax (recovery) expense

2017

2016

2015

 $

 $

(8,000)  $
9,210 
(1,393)   
683 
594 
— 
(1,444)   
350 
— 

 $

(5,980)  $
6,897 
(1,500)   
617 
569 
(531)   
— 
(72)   
 $
— 

(4,095)
2,482 
(1,220)
2,851 
977 
— 
— 
(995)
—  

90

 
 
 
 
 
 
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
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:

2017

2016

Deferred income tax assets
Scientific research and experimental development pool
Investment tax credits
Non-capital losses
Depreciable assets
Deferred financing fees
Other
Less - valuation allowance
Net deferred income tax assets

 $

 $

 $

25,056 
22,872 
13,645 
5,360 
578 
114 
(67,625)   
 $

— 

22,823 
22,483 
7,800 
4,163 
1,020 
126 
(58,415)
—  

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 as the Company has assessed that the realization of such 
assets does not meet the “more likely than not” criteria.

At  December 31,  2017,  the  Company  has  unclaimed  tax  deductions  for  scientific  research  and  experimental  development 
expenditures of $92,799 (2016 – $87,781) with no expiry.

At December 31, 2017, the Company has $21,066 (2016 – $20,160) of investment tax credits available to offset federal taxes 
payable and $7,560 (2016 – $7,624) of provincial tax credits available to offset provincial taxes payable in the future.

At  December 31,  2017,  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 $50,536 (2016 – $29,999).

The investment tax credits and loss carry forwards expire over various years to 2037.

As of December 31, 2017, the total amount of the Company’s unrecognized tax benefits of uncertain tax positions were $6,350 
(2016 – $6,350). If recognized in future periods, the unrecognized tax benefits would 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, 2017 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 2016 remain subject to 
Canadian income tax examinations.

91

 
 
 
 
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
14. Related Parties:

Dr. August J. Troendle, an officer and director of Medpace, which provides clinical development services to the Company, was 
a beneficial owner of more than 5% of the Company’s common shares during a portion of 2016. The Company incurred $3,097 
of clinical development service fees under its priority access agreement and a master services agreement with Medpace for the 
year  ended  December  31,  2016  (2015  –  $922).  Additionally,  the  Company  has  recorded  $1,010  of  prepaid  expenses  as  of 
December  31,  2016  (December 31,  2015  –  $2,314)  for  future  clinical  development  services  under  such  agreements  with 
Medpace.

15.

Selected quarterly consolidated financial data (unaudited):

The following table presents certain unaudited quarterly consolidated financial information for the years ended December 31, 
2017  and  2016  (in  thousands  of  U.S.  dollars  except  per  share  amounts).  This  information  reflects  all  normal  recurring 
adjustments, which are, in the opinion of management, necessary for a fair statement of the results of the interim periods.

Revenue
Loss from operations
Net loss
Basic net loss per common share
Diluted net loss per common share

Revenue
Loss from operations
Net loss
Basic and diluted net loss per common share

16.

Subsequent event:

Three Months Ended

March 31,
2017

June 30,
2017

September 30,
2017

December 31,
2017

16 
 $
(7,987)   
(7,517)   
(0.42)  $
(0.43)  $

 $
15 
(7,893)   
(7,380)   
(0.41)  $
(0.41)  $

 $
264 
(8,644)   
(7,742)   
(0.43)  $
(0.43)  $

16 
(8,051)
(8,065)
(0.45)
(0.45)

Three Months Ended

March 31,
2016

June 30,
2016

September 30,
2016

December 31,
2016

601 
 $
(5,658)   
(3,263)   
(0.23)  $

413 
 $
(6,366)   
(6,016)   
(0.42)  $

 $
413 
(7,331)   
(7,714)   
(0.51)  $

376 
(5,462)
(6,004)
(0.34)

 $

 $
 $

 $

 $

On March 7, 2018, the Company and Teva Pharmaceuticals International GmbH and Teva Canada Limited (together “Teva”), 

entered into a termination agreement terminating by mutual agreement the collaborative development and license agreement dated 
December 7, 2012, as amended.

Pursuant to the termination agreement and subject to receipt by us of an order from the Ontario Securities Commission (“OSC”), 

Teva has agreed to transfer and assign 1,000,000 common shares of the Company held by Teva Canada Limited to the Company for 
cancellation. Teva will also return, license or assign to the Company certain intellectual property including certain patent rights. The 
termination agreement requires the Company to pay a low single-digit percentage royalty to Teva based on net sales of approved 
products, if any, resulting from any continued development and commercialization of TV-45070 by the Company during the period 
that assigned or licensed patents cover such products. Teva will also transfer regulatory filings related to TV-45070 to the Company.

The termination agreement will become effective on the date specified by the Company in a written notice to Teva. The 
effective date will be after the date that the Company receives the OSC order granting the Company exemptive relief from the 
requirements related to issuer bids under applicable Canadian securities laws in connection with the transfer and assignment to the 
Company by Teva Canada of the 1,000,000 common shares and not earlier than 10 business days from the date that a press release 
announcing the termination agreement is issued by the Company. The Company has made an application to the OSC for the OSC 
order and expects the effective date to be on or about March 22, 2018.

Item 9.

Changes in and Disagreements With Accountants on Accounting and Financial Disclosure

None.

92

 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
    
 
    
 
    
 
    
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
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, 2017. 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, 2017, 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)

(ii)

pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and 
dispositions of our assets;

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.

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 at December 31, 2017. 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, 2017.

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, 2017 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.

93

Item 10. Directors, Executive Officers and Corporate Governance

PART III

The information required by Item 10 of Form 10-K is incorporated by reference to our Proxy Statement for the 2018 Annual Meeting 
of Shareholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2017. 

Item 11.

Executive Compensation

The information required by Item 11 of Form 10-K is incorporated by reference to our Proxy Statement for the 2018 Annual Meeting 
of Shareholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2017.

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 2018 Annual Meeting 
of Shareholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2017.

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 2018 Annual Meeting 
of Shareholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2017.

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 2018 Annual Meeting 
of Shareholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2017.

94

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 on the Exhibit Index (following the Signatures section of this report) are filed herewith or are 

incorporated by reference to exhibits previously filed with the SEC.

Item 16.

Form 10-K Summary

Not applicable.

Exhibit
Number

3.1

3.2

4.1

4.2

4.3

10.1†

10.2†

10.3†

10.4#

10.5#

EXHIBIT INDEX

Description of Document

Form

Incorporated by Reference
File No.

Exhibit

Filing Date

Articles of the Company.

10-Q

001-36687

3.1

Amended and Restated By-laws of the Company.

10-Q

001-36687

3.2

Form of Common Share Certificate.

S-1/A 333-198666

4.1

Amended and Restated Investor Rights Agreement, dated 
December 6, 2006, by and among the Company and the 
investors listed on Exhibit A and Exhibit B thereto, as 
amended. 

Warrant to Purchase Shares, dated December 18, 2017, by 
and between Xenon Pharmaceuticals Inc. and Silicon Valley 
Bank

Exclusive Collaborative Research and Option Agreement, 
dated June 10, 2009, by and between the Company and 
Merck Sharp & Dohme Research Ltd, as amended. 

Collaborative Research and License Agreement, dated 
December 22, 2011, by and among the Company, 
Genentech, Inc. and F. Hoffmann-La Roche Ltd, as 
amended.

Collaborative Development and License Agreement, dated 
December 7, 2012, by and between the Company and Ivax 
International GmbH, as amended. 

S-1/A 333-198666

4.2

8-K

001-36687

4.1

December 18, 
2017

S-1/A 333-198666

10.1

S-1/A 333-198666

10.3

S-1/A 333-198666

10.4

Stock Option Plan, as amended, and form of option 
agreement thereunder.

S-1/A 333-198666

10.7

2014 Equity Incentive Plan.

S-1

333-198666

10.8

December 15, 
2014

December 15, 
2014

October 6, 
2014

October 6, 
2014

October 6, 
2014

October 6, 
2014

October 6, 
2014

October 6, 
2014

September 10, 
2014

10.5A#

Form of Share Option Agreement, as amended, under the 
2014 Equity Incentive Plan.

10-K

001-36687

10.8A March 8, 2017

95

 
Exhibit
Number

10.6#

10.7#

10.8#

10.9#

10.10

10.11#

10.12†

10.13

10.14

10.15†

10.16†

10.17#

10.18†

10.19†

10.20

21.1

23.1

24.1

31.1

Description of Document

Offer Letter, dated October 3, 2014, by and between the 
Company and Simon Pimstone.

Offer Letter, dated October 3, 2014, by and between the 
Company and Paul Goldberg.

Offer Letter, dated October 3, 2014, by and between the 
Company and Ian Mortimer. 

Offer Letter, dated October 3, 2014, by and between the 
Company and Robin Sherrington.

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.

Form

Incorporated by Reference
File No.

Exhibit

S-1/A 333-198666

10.9

S-1/A 333-198666

10.10

S-1/A 333-198666

10.11

S-1/A 333-198666

10.13

Filing Date

October 6, 
2014

October 6, 
2014

October 6, 
2014

October 6, 
2014

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

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.

Offer letter, effective January 1, 2017, by and between 
Xenon Pharmaceuticals USA Inc. and James Empfield.

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.

Loan and Security Agreement, dated December 18, 2017, by 
and among Xenon Pharmaceuticals Inc., Xenon 
Pharmaceuticals USA Inc. and Silicon Valley Bank 

10-K

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-K

001-36687

10.20 March 8, 2017

10-Q

001-36687

10.1

August 3, 2017

10-Q

001-36687

10.2

August 3, 2017

8-K

001-36687

10.1

December 18, 
2017

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

96

Exhibit
Number

31.2

32.1*

32.2*

101.INS

101.SCH

101.CAL

101.DEF

101.LAB

101.PRE

Description of Document

Form

Incorporated by Reference
File No.

Exhibit

Filing Date

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

XBRL Instance Document

XBRL Taxonomy Extension Schema Document

XBRL Taxonomy Extension Calculation Linkbase 
Document

XBRL Taxonomy Extension Definition Linkbase Document

XBRL Taxonomy Extension Label Linkbase Document

XBRL Taxonomy Extension Presentation Linkbase 
Document

†

#
*

Confidential treatment has been requested with respect to certain portions of this exhibit. Omitted portions have been filed 
separately with the Securities and Exchange Commission.
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.

97

SIGNATURES

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 7, 2018

  XENON PHARMACEUTICALS INC.

By:   /s/ Simon Pimstone 
  Simon Pimstone
  President and 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/ Steven Gannon

Steven Gannon

/s/ Michael Hayden

Michael Hayden

/s/ Frank Holler

Frank Holler

/s/ Gary Patou

Gary Patou

/s/ Richard Scheller

Richard Scheller

/s/ Dawn Svoronos

Dawn Svoronos

Title

President, Chief Executive Officer and 
Director (Principal Executive Officer)
Chief Financial Officer and Chief Operating 
Officer (Principal Financial and Accounting 
Officer)

  Chair of the Board of Directors

  Director

  Director

  Director

  Director

  Director

  Director

  Director

98

Date

March 7, 2018

March 7, 2018

March 7, 2018

March 7, 2018

March 7, 2018

March 7, 2018

March 7, 2018

March 7, 2018

March 7, 2018

March 7, 2018

 
 
 
 
   
 
   
  
  
  
  
  
  
  
  
  
  
  
  
  
  
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