Quarterlytics / Healthcare / Biotechnology / Verona Pharma plc

Verona Pharma plc

vrna · NASDAQ Healthcare
Claim this profile
Ticker vrna
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Employees 11-50
← All annual reports
FY2022 Annual Report · Verona Pharma plc
Sign in to download
Loading PDF…
UNITED STATES 
SECURITIES AND EXCHANGE COMMISSION 
Washington, D.C. 20549 
FORM 10-K

☒ 

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE 

SECURITIES EXCHANGE ACT OF 1934 
For the fiscal year ended December 31, 2022
OR 

☐ 

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE 

SECURITIES EXCHANGE ACT OF 1934 

FOR THE TRANSITION PERIOD FROM __________ TO __________
Commission File Number: 001-38067
Verona Pharma plc 
(Exact name of Registrant as specified in its Charter) 

United Kingdom
(State or other jurisdiction of incorporation or organization)

98-1489389
(I.R.S. Employer Identification No.)

3 More London Riverside
London SE1 2RE United Kingdom

(Address of principal executive offices)

Not Applicable

(Zip Code)

Registrant’s telephone number, including area code: +44 203 283 4200

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

Title of each class
Ordinary shares, nominal value £0.05 per share*

Trading 
Symbol
VRNA

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

* The ordinary shares are represented by American Depositary Shares (each representing 8 ordinary shares), which are exempt from the operation 
of Section 12(a) of the Securities Exchange Act of 1934, as amended, pursuant to Rule 12a-8 thereunder.

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

Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities 
Act. Yes ☒ No ☐
Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or 15(d) of the Act. Yes 
☐ No ☒
Indicate by check mark whether the Registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of 
the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant 
was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ 
No ☐
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be 
submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for 
such shorter period that the registrant was required to submit such files). Yes ☒ No ☐
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, 
smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” 
“accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange 
Act.

 
Large accelerated filer

Non-accelerated filer

☐

☒

Accelerated filer 

Small reporting company

Emerging growth company

☐

☒

☐

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

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

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    
Yes ☐    No ☒

The  aggregate  market  value  of  the  registrant's  voting  and  non-voting  common  equity  held  by  non-affiliates  was 
approximately $212.1 million as of June 30, 2022, the last business day of the registrant's most recently completed 
second fiscal quarter. Solely for purposes of this disclosure, shares held by executive officers, directors and certain 
shareholders of the registrant as of such date have been excluded because such persons or entities may be deemed to 
be affiliates of the registrant. 

As of March 3, 2023, the registrant had 631,904,598 ordinary shares, nominal value £0.05 per share, outstanding, 
which if all held in ADS form, would be represented by 78,988,075 American Depositary Shares, each representing 
eight (8) ordinary shares.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant’s definitive proxy statement that the registrant intends to file with the Securities and 
Exchange Commission pursuant to Regulation 14A in connection with the registrant’s 2023 Annual Meeting of 
Shareholders are incorporated by reference into Part III of this Annual Report on Form 10-K to the extent stated 
herein. 

GENERAL INFORMATION

All  references  in  this  Annual  Report  on  Form  10-K  (the  “Annual  Report”),  to  “Verona,”  the  “company,”  the 
"group", “we,” “us” and “our” refer to Verona Pharma plc and its consolidated subsidiaries. In this Annual Report, 
the U.S. Securities and Exchange Commission is referred to as the “SEC”, the Securities Act of 1933, as amended, is 
referred  to  as  the  “Securities  Act”  and  the  Securities  Exchange  Act  of  1934,  as  amended,  is  referred  to  as  the 
“Exchange Act.”

TRADEMARKS, TRADENAMES AND SERVICE MARKS

This  Annual  Report  may  include  trademarks,  tradenames  and  service  marks  that  are  the  property  of  other 
organizations. Solely for convenience, trademarks and tradenames referred to in this Annual Report appear without 
the ® and ™ symbols, but those references are not intended to indicate, in any way, that we will not assert, to the 
fullest  extent  under  applicable  law,  our  rights  or  that  the  applicable  owner  will  not  assert  its  rights,  to  these 
trademarks and tradenames.

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Annual Report contains statements that constitute forward-looking statements. In some cases, you can identify 
forward-looking  statements  by  terms  such  as  “may,”  “will,”  “should,”  “expect,”  “plan,”  “anticipate,”  “could,” 
“intend,”  “target,”  “project,”  “contemplate,”  “believe,”  “estimate,”  “predict,”  “potential”  or  “continue”  or  the 
negative  of  these  terms  or  other  similar  expressions,  although  not  all  forward-looking  statements  contain  these 
words.  All  statements  other  than  statements  of  historical  facts  contained  in  this  Annual  Report,  including  without 
limitation  statements  regarding  our  future  results  of  operations  and  financial  position,  business  strategy  and  plans 
and  objectives  of  management  for  future  operations,  the  development  of  ensifentrine  or  any  other  product 
candidates, including statements regarding the expected initiation, timing, progress and availability of data from our 
clinical trials and potential regulatory approvals and the expected regulations applicable to ensifentrine, research and 
development costs, timing and likelihood of  success, potential collaborations, the duration of our patent portfolio, 
our  estimates  regarding  expenses,  future  revenues,  capital  requirements,  debt  service  obligations  and  our  need  for 
additional financing, the funding we expect to become available under the Oxford Term Loan and from cash receipts 
from U.K. tax credits, and the sufficiency of our cash and cash equivalents to fund operations, are forward-looking 
statements. 

The  forward-looking  statements  in  this  Annual  Report  are  only  predictions  and  are  based  largely  on  our  current 
expectations  and  projections  about  future  events  and  financial  trends  that  we  believe  may  affect  our  business, 
financial  condition  and  results  of  operations.  These  forward-looking  statements  speak  only  as  of  the  date  of  this 
Annual Report and are subject to a number of known and unknown risks, uncertainties and assumptions, including 
the important factors described under the sections in this Annual Report entitled “Risk Factors” and “Management’s 
Discussion and Analysis of Financial Condition and Results of Operations” and in our other filings with the SEC.

Because  forward-looking  statements  are  inherently  subject  to  risks  and  uncertainties,  some  of  which  cannot  be 
predicted  or  quantified  and  some  of  which  are  beyond  our  control,  you  should  not  rely  on  these  forward-looking 
statements as predictions of future events. The events and circumstances reflected in our forward-looking statements 
may not be achieved or occur and actual results could differ materially from those projected in the forward-looking 
statements. Moreover, we operate in an evolving environment. New risk factors and uncertainties may emerge from 
time to time, and it is not possible for management to predict all risk factors and uncertainties. Except as required by 
applicable  law,  we  do  not  plan  to  publicly  update  or  revise  any  forward-looking  statements  contained  herein, 
whether  as  a  result  of  any  new  information,  future  events,  changed  circumstances  or  otherwise.  We  intend  the 
forward-looking statements contained in this Annual Report to be covered by the safe harbor provisions for forward-
looking statements contained in Section 27A of the Securities Act and Section 21E of the Exchange Act.

This  Annual  Report  contains  market  data  and  industry  forecasts  that  were  obtained  from  industry  publications. 
These data involve a number of assumptions and limitations, and you are cautioned not to give undue weight to such 
estimates. We have not independently verified any third-party information. While we believe the market position, 
market  opportunity  and  market  size  information  included  in  this  Annual  Report  is  generally  reliable,  such 
information is inherently imprecise.

SUMMARY RISK FACTORS

Our  business  is  subject  to  numerous  risks  and  uncertainties,  including  those  described  in  Part  I,  Item  1A.  “Risk 
Factors” in this Annual Report. You should carefully consider these risks and uncertainties when investing in our 
ADSs. The principal risks and uncertainties affecting our business include the following:

• We have a limited operating history and have never generated any product revenue;

• We  may  need  additional  funding  to  complete  development  of  and  commercialize  ensifentrine  and  any  future 
product  candidates,  if  approved,  or  develop  and  commercialize  other  formulations  or  target  indications  of 
ensifentrine, if approved;

•

•

The advances under the $150.0 million Oxford Term Loan are contingent upon achievement of certain clinical 
and regulatory milestones and other specified conditions. If we fail to meet those conditions, we will need to 
find alternative sources of funding;

Changes in our tax rates, unavailability of certain tax credits or reliefs or exposure to additional tax liabilities or 
assessments could affect our profitability, and audits by tax authorities could result in additional tax payments 
for prior periods;

• We depend solely on the success of ensifentrine, our only product candidate under development;

• We  may  incur  additional  costs  or  experience  delays  in  completing,  or  ultimately  be  unable  to  complete,  the 

development and commercialization of our product candidates;

•

•

Ensifentrine  may  have  serious  adverse,  undesirable  or  unacceptable  side  effects  which  may  delay  or  prevent 
marketing approval;

If we are unable to enroll patients in our clinical trials, or enrollment is slower than anticipated, our research and 
development efforts could be adversely affected;

• We may become exposed to costly and damaging liability claims, either when testing ensifentrine in the clinic 
or at the commercial stage, and our product liability insurance may not cover all damages from such claims;

•

•

•

Regulatory  approval  processes  are  lengthy,  time  consuming  and  inherently  unpredictable,  and  if  we  are 
ultimately unable to obtain regulatory approval for ensifentrine, our business will be substantially harmed;

Enacted and future legislation may increase the difficulty and cost for us to obtain marketing approval of and 
commercialize ensifentrine and may affect the prices we may set;

Our  business  operations  and  current  and  future  relationships  with  investigators,  healthcare  professionals, 
consultants,  third-party  payors  and  customers  will  be  subject  to  applicable  healthcare  regulatory  laws,  which 
could expose us to penalties;

• We  operate  in  a  highly  competitive  and  rapidly  changing  industry,  which  may  result  in  others  discovering, 

developing or commercializing competing products before or more successfully than we do;

• We rely, and expect to continue to rely, on third parties, including independent clinical investigators and clinical 

research organizations, to conduct our pre-clinical studies and clinical trials;

•

•

The collaboration and license agreement with Nuance Pharma is important to our business. If Nuance Pharma is 
unable  to  develop  and  commercialize  products  containing  ensifentrine  in  Greater  China,  if  we  or  Nuance 
Pharma  fail  to  adequately  perform  under  the  Nuance  Agreement,  or  if  we  or  Nuance  Pharma  terminate  the 
Nuance Agreement, our business would be adversely affected.

If we fail to enter into new strategic relationships for ensifentrine, our business, research and development and 
commercialization prospects could be adversely affected;

• We  currently  rely  on  third-party  manufacturers  and  suppliers  for  production  of  the  active  pharmaceutical 
ingredient ensifentrine and its derived formulated products. Our dependence on these third parties may impair 
the advancement of our research and development programs and the development of ensifentrine;

• We rely on patents and other intellectual property rights to protect ensifentrine, the enforcement, defense and 

maintenance of which may be challenging and costly;

• We may not identify relevant third-party patents or may incorrectly interpret the relevance, scope or expiration 
of a third-party patent which might adversely affect our ability to develop, manufacture and market ensifentrine;

• We may be involved in lawsuits to protect or enforce patents covering ensifentrine, which could be expensive, 
time consuming and unsuccessful, and issued patents could be found invalid or unenforceable if challenged in 
court;

•

Our  future  growth  and  ability  to  compete  depends  on  our  ability  to  retain  our  key  personnel  and  recruit 
additional qualified personnel;

• We expect to expand our development, regulatory and sales and marketing capabilities, and as a result, we may 

encounter difficulties in managing our growth, which could disrupt our operations;

•

The  price  of  our  American  Depositary  Shares  may  be  volatile  and  may  fluctuate  due  to  factors  beyond  our 
control; and

• We will continue to incur increased costs as a result of operating as a public company in the United States, and 
our  senior  management  are  required  to  devote  substantial  time  to  new  compliance  initiatives  and  corporate 
governance practices.

Table of Contents

Part I

Item 1.

Business

Item 1A.

Risk Factors

Item 1B.

Unresolved Staff Comments

Item 2.

Properties

Item 3.

Legal Proceedings

Item 4.
Part II

Item 5.

Item 6.

Item 7.

Mine Safety Disclosures

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

[Reserved]
Management’s Discussion and Analysis of Financial Condition and Results of 
Operations

Item 7A.

Quantitative and Qualitative Disclosures about Market Risk

Item 8.

Item 9.

Financial Statements and Supplementary Data
Changes in and Disagreements with Accountants on Accounting and Financial 
Disclosure

Item 9A.

Controls and Procedures

Item 9B.

Other Information

Item 9C.
Part III

Disclosures Regarding Foreign Jurisdictions that Prevent Inspections

Item 10.

Directors, Executive Officers and Corporate Governance

Item 11.

Item 12.

Executive Compensation
Security Ownership of Certain Beneficial Owners and Management and Related 
Stockholder Matters

Item 13.

Certain Relationships and Related Transactions, and Director Independence

Item 14.
Part IV

Principal Accounting Fees and Services

Item 15.

Exhibits, Financial Statement Schedules

Item 16.

Form 10-K Summary

Signatures

Page

1

34

80

80

81

81

82

82

82

93

93

93

94

94

95

95

95

95

95

96

100

101

Item 1.  Business

OVERVIEW

We  are  a  clinical-stage  biopharmaceutical  company  focused  on  developing  and  commercializing  innovative 
therapeutics  for  the  treatment  of  respiratory  diseases  with  significant  unmet  medical  need.  Our  product  candidate, 
ensifentrine, is an investigational, first-in-class, inhaled, selective, dual inhibitor of the enzymes phosphodiesterase 3 
and  4  (“PDE3”  and  “PDE4”),  combining  bronchodilator  and  non-steroidal  anti-inflammatory  activities  in  one 
compound. 

Initially,  we  are  developing  inhaled  ensifentrine  for  the  treatment  of  chronic  obstructive  pulmonary  disease 
(“COPD”), a common, chronic, progressive, and life-threatening respiratory disease without a cure. If successfully 
developed, ensifentrine would be the first therapeutic with a novel mode of action for COPD in over a decade.

During 2022, we reported positive top-line results from both of our Phase 3 ENHANCE (“Ensifentrine as a Novel 
inHAled  Nebulized  COPD  thErapy”)  trials  evaluating  nebulized  ensifentrine  for  the  maintenance  treatment  of 
COPD.  Ensifentrine  met  the  primary  endpoint  in  both  the  ENHANCE-1  and  ENHANCE-2  trials  demonstrating 
statistically  significant  and  clinically  meaningful  improvements  in  measures  of  lung  function.  In  addition, 
ensifentrine  substantially  reduced  the  rate  and  risk  of  COPD  exacerbations  in  ENHANCE-1  and  ENHANCE-2. 
Ensifentrine was well tolerated in both trials.

Based on the results from our ENHANCE program, we believe ensifentrine, if approved, has the potential to change 
the  treatment  paradigm  for  COPD.  The  totality  of  data  from  clinical  trials,  in  particular  top-line  results  from  the 
ENHANCE program, support our belief. We plan to submit a New Drug Application (“NDA”) to the U.S. Food and 
Drug Administration (“FDA”) in the second quarter of 2023 for inhaled ensifentrine for the maintenance treatment 
of COPD.

If approved, we intend to commercialize inhaled ensifentrine for the maintenance treatment of COPD in the United 
States (“U.S.”). Although we believe ensifentrine will not be regulated as a drug device combination, patients use a 
readily  available  standard  jet  nebulizer  to  take  ensifentrine.  Outside  the  US,  we  intend  to  license  ensifentrine  to 
companies with expertise and experience in developing and commercializing products in those regions. To that end, 
we  have  entered  into  a  strategic  collaboration  with  Nuance  Pharma  Limited,  a  Shanghai-based  specialty 
pharmaceutical company (“Nuance Pharma”), to develop and commercialize ensifentrine in Greater China.

In Phase 2 clinical trials, ensifentrine has demonstrated positive results in patients with COPD, asthma and cystic 
fibrosis (“CF”). Two additional formulations of ensifentrine have been evaluated in Phase 2 trials for the treatment 
of COPD: dry powder inhaler (“DPI”) and pressurized metered-dose inhaler (“pMDI”). 

Overview of COPD and current treatments

COPD is a common, progressive, life-threatening respiratory disease without a cure. It causes loss of lung function, 
leading  to  debilitating  breathlessness,  hospitalizations,  and  death.  COPD  has  a  major  impact  on  everyday  life. 
Patients struggle with basic activities such as getting out of bed, showering, eating, and walking. Worldwide, COPD 
affects approximately 384 million people and is the third leading cause of death, according to the Global Initiative 
for Chronic Obstructive Lung Disease.

The goal of COPD pharmacological therapy is to improve patients’ quality of life by reducing symptoms, decreasing 
the  quantity  and  severity  of  exacerbations  (often  an  escalation  of  symptoms)  and  to  improve  patients’  ability  to 
function.

For  approximately  40  years,  the  treatment  of  COPD  has  been  dominated  by  three  classes  of  inhaled  therapies 
approved for use by the FDA and the European Commission based on the European Medicines Agency’s (“EMA”) 
opinion: anti-muscarinics, beta-agonists and inhaled corticosteroids (“ICSs”). COPD patients are frequently treated 
with bronchodilators, including long-acting anti-muscarinics (“LAMAs”) and long-acting beta-agonists (“LABAs”), 
to  relieve  airway  constriction  and  make  it  easier  to  breathe.  In  addition,  patients  at  risk  for  exacerbations  may  be 
prescribed ICSs to prevent them. 
Certain COPD patients are treated with the oral PDE4 inhibitor, roflumilast (Daliresp®), which has demonstrated a 
reduction  in  exacerbation  risk  in  patients  with  severe  chronic  bronchitis.  However,  oral  PDE4  therapy  results  in 
systemic exposure, which has been associated with unfavorable gastrointestinal side-effects such as nausea, emesis, 
diarrhea, abdominal pain, loss of appetite and weight loss.

1

Approximately  8.5  million  COPD  patients  in  the  U.S.  receive  LAMA,  LABA,  or  ICS  treatments  alone  or  in 
combination regardless of COPD severity. Despite these medications and the earlier use of dual (LAMA/LABA) and 
triple  (LAMA/LABA/ICS)  therapies,  many  patients  continue  to  suffer  debilitating  symptoms.  According  to  a 
December 2022 study by Phreesia, 45% of patients continue to have symptoms more than 24 days a month. This 
burden  leaves  a  significant  opportunity  for  new  inhaled  therapies  that  offer  additional  benefit  added  to  the  three 
main classes of treatment. New treatment options are urgently needed to help improve lung function and symptoms, 
reduce exacerbations and improve overall quality of life in these patients.

Ensifentrine

Ensifentrine  is  an  investigational,  first-in-class,  inhaled,  small  molecule  and  selective,  dual  PDE3  and  PDE4 
inhibitor. This dual inhibition enables it to act as a bronchodilator and a non-steroidal anti-inflammatory agent in a 
single  compound.  Importantly,  ensifentrine’s  therapeutic  profile  differentiates  it  from  existing  classes  of 
bronchodilator  and  anti-inflammatory  treatments.  We  are  not  aware  of  any  other  single  compound  in  clinical 
development  in  the  U.S.  or  Europe  or  approved  by  the  FDA  nor  the  European  Commission  for  the  treatment  of 
respiratory  diseases  that  acts  both  as  a  bronchodilator  and  anti-inflammatory  agent.  If  successfully  developed  and 
approved, ensifentrine has the potential to be the first novel class of therapeutic in COPD in over 10 years and to 
become the only bronchodilator option that could be added to existing classes of inhaled therapies including LAMA, 
LABA and ICS.

Safety profile

Ensifentrine has been well tolerated in clinical trials involving approximately 3,000 subjects to date. Additionally, 
ensifentrine did not prolong the QT interval or impact other cardiac conduction parameters in a thorough QT study 
in  healthy  volunteers.  It  is  delivered  directly  to  the  lungs  by  inhalation  to  maximize  pulmonary  exposure  to 
ensifentrine  while  minimizing  systemic  exposure.  This  feature  minimizes  any  systemic  side-effects  such  as  the 
gastrointestinal disturbance associated with oral PDE4 inhibitors. In addition, in non-clinical trials ensifentrine has 
demonstrated high selectivity for PDE3 and PDE4 over other enzymes and receptors, which is believed to minimize 
off-target effects.

Differentiated profile

By  selectively  inhibiting  PDE3  and  PDE4,  ensifentrine  impacts  three  key  mechanisms  in  respiratory  disease: 
bronchodilation, inflammation and mucociliary clearance. Ensifentrine is designed to increase the levels of cellular 
cAMP and cGMP in smooth muscle cells and inflammatory cells, resulting in bronchodilator and anti-inflammatory 
effects.  Ensifentrine  has  also  been  shown  to  stimulate  the  cystic  fibrosis  transmembrane  conductance  regulator 
(“CFTR”), which is an ion channel in the epithelial cells lining the airways. Mutations in the CFTR protein result in 
poorly or non-functioning ion channels, which cause CF. CFTR dysfunction is also potentially important in COPD. 
CFTR  stimulation  leads  to  improved  electrolyte  balance  in  the  lung  and  thinning  of  the  mucus,  which  facilitates 
mucociliary clearance and leads to improved lung function and potentially a reduction in lung infections. 

Dual  inhibition  of  PDE3  and  PDE4  has  shown  enhanced  or  synergistic  effects  compared  with  inhibition  of  either 
PDE  alone  on  contraction  of  airway  smooth  muscle  and  suppression  of  inflammatory  mediator  release  in  several 
preclinical  studies.  We  believe  these  enhanced  effects  may  increase  the  utility  of  ensifentrine  in  the  treatment  of 
respiratory diseases including COPD, asthma and CF. 

2

Clinical data

Phase 2b

Ensifentrine  has  demonstrated  improvements  in  lung  function,  symptoms  and  quality  of  life  with  or  without 
background therapy in two 4-week, Phase 2b dose-ranging clinical trials in moderate to severe COPD patients. In 
both studies ensifentrine was well tolerated at all doses with an adverse event profile similar to placebo:

•

•

In March 2018, we reported positive top-line results with ensifentrine as monotherapy from our first Phase 2b 
trial in 403 patients. The trial evaluated four doses of nebulized ensifentrine (0.75 mg, 1.5 mg, 3 mg and 6 mg) 
or placebo twice daily over 4 weeks. Patients withheld use of regular long-acting bronchodilator therapy for the 
duration  of  the  study.  The  trial  met  its  primary  endpoint  of  improved  lung  function  with  ensifentrine 
demonstrating  a  clinically  and  statistically  significant  increase  in  peak  forced  expiratory  volume  in  1  second 
(“FEV1”)  at  week  4  compared  to  placebo.  In  addition,  clinically  relevant  secondary  endpoints  were  met 
including significant progressive improvements in COPD symptoms. 

In January 2020, we reported positive top-line results with ensifentrine added on to background therapy from 
our second Phase 2b trial in 413 patients. This trial evaluated four doses of nebulized ensifentrine (0.375 mg, 
0.75 mg, 1.5 mg and 3 mg) or placebo added on to treatment with once-daily tiotropium (Spiriva® Respimat®), a 
commonly used LAMA bronchodilator, in symptomatic patients with moderate to severe COPD who required 
additional  treatment.  The  trial  met  its  primary  endpoint  of  improved  lung  function,  with  ensifentrine  plus 
tiotropium  demonstrating  a  clinically  and  statistically  significant  dose-dependent  improvement  in  peak  FEV1 
and  FEV1  over  12  hours  with  ensifentrine  at  week  4,  compared  to  placebo  plus  tiotropium.  Additionally, 
clinically meaningful and statistically significant improvements in health-related quality of life were observed 
with ensifentrine added on to tiotropium. 

3

 
Phase 3 ENHANCE program

Ensifentrine has successfully met the primary endpoints in two randomized, double-blind, placebo-controlled Phase 
3  trials,  ENHANCE-1  and  ENHANCE-2,  demonstrating  statistically  significant  and  clinically  meaningful 
improvements in measures of lung function in moderate to severe COPD patients. Improvements in symptoms and 
quality  of  life  measures  were  shown  in  both  trials,  which  reached  statistical  significance  in  ENHANCE-1. 
Ensifentrine  substantially  reduced  the  rate  and  risk  of  moderate  to  severe  COPD  exacerbations  in  both  trials. 
Ensifentrine was well tolerated in both trials.

The  ENHANCE  trials  were  designed  to  evaluate  ensifentrine  as  monotherapy  and  added  onto  a  single 
bronchodilator  with  approximately  50%  of  subjects  receiving  either  a  LAMA  or  a  LABA.  Additionally, 
approximately 20% of subjects received ICSs with their concomitant LAMA or LABA.

Each trial enrolled approximately 800 subjects, for a total of approximately 1,600 subjects, at sites primarily in the 
U.S.  and  Europe.  The  two  trials  provided  replicate  evidence  of  efficacy  and  safety  data  over  24  weeks  and 
ENHANCE-1 also evaluated longer-term safety in approximately 400 subjects over 48 weeks.

4

Subject demographics and disease characteristics were well balanced between treatment groups in both trials.

•

•

In  ENHANCE-1  approximately  69%  of  subjects  received  background  COPD  therapy,  either  LAMA  or  a 
LABA. Additionally, approximately 20% of all subjects received ICS with concomitant LAMA or LABA.

In  ENHANCE-2  approximately  55%  of  subjects  received  background  COPD  therapy,  either  a  LAMA  or  a 
LABA. Additionally, approximately 15% of all subjects received ICS with concomitant LAMA or LABA.

5

We  reported  positive  top-line  results  from  ENHANCE-2  and  ENHANCE-1,  in  August  and  December  2022, 
respectively.  Ensifentrine  successfully  met  the  primary  endpoints  in  both  trials,  demonstrating  statistically 
significant  and  clinically  meaningful  improvements  in  measures  of  lung  function  in  moderate  to  severe  COPD 
patients. Improvements in symptoms and quality of life measures were shown in both trials, which reached statistical 
significance  in  ENHANCE-1.  Ensifentrine  substantially  reduced  the  rate  and  risk  of  moderate  to  severe  COPD 
exacerbations and was well tolerated in both trials.

Highlights

Primary endpoint met (FEV1 AUC 0-12 hr)

•

•

Placebo corrected, change from baseline in average FEV1 area under the curve 0-12 hours post dose at week 12 
was  87  mL  (p<0.0001)  for  ensifentrine  in  ENHANCE-1  and  94  mL  (p<0.0001)  for  ensifentrine  in 
ENHANCE-2.

Demonstrated  consistent  improvements  with  ensifentrine  in  all  subgroups  including  gender,  age,  smoking 
status, COPD severity, background medication, ICS use, chronic bronchitis, FEV1 reversibility and geographic 
region.

Secondary endpoints evaluating lung function met:

•

•

Placebo  corrected,  increase  in  peak  FEV1  of  147  mL  (p<0.0001)  0-4  hours  post  dose  at  week  12  in 
ENHANCE-1 and 146 mL (p<0.0001) in ENHANCE-2.

Placebo corrected, increase in morning trough FEV1 of 35 mL (p=0.0413) at week 12 in ENHANCE-1 and 49 
mL (p=0.0016) in ENHANCE-2, supporting twice daily dosing regimen.

6

Exacerbation rate and risk reduced

•

Subjects  receiving  ensifentrine  demonstrated  a  36%  reduction  in  the  rate  of  moderate  to  severe  COPD 
exacerbations  over  24  weeks  (p=0.0503)  compared  to  those  receiving  placebo  in  ENHANCE-1  and  a  43% 
reduction (p=0.0090) in ENHANCE-2.

7

•

In pooled exacerbation data from ENHANCE-1 and ENHANCE-2, ensifentrine demonstrated a 40% reduction 
in the rate of moderate to severe COPD exacerbations over 24 weeks (p=0.0012) compared to those receiving 
placebo. 

•

Treatment with ensifentrine significantly decreased the risk of a moderate/severe exacerbation as measured by 
time  to  first  exacerbation  when  compared  with  placebo  by  38%  (p=0.0382)  in  ENHANCE-1  and  by  42% 
(p=0.0089) in ENHANCE-2.

8

•

In pooled exacerbation data from ENHANCE-1 and ENHANCE-2, ensifentrine significantly decreased the risk 
of a moderate/severe exacerbation as measured by time to first exacerbation when compared with placebo by 
41% (p=0.0009).

9

COPD symptoms and Quality of Life (“QOL”)

•

In ENHANCE-1, daily symptoms as measured by E-RS* Total Score in the ensifentrine group improved from 
baseline  to  greater  than  the  minimal  clinically  important  difference  (“MCID”)  of  -2  units  with  a  statistically 
significant improvement compared to placebo at week 24. Improvements in symptoms were early and sustained 
with statistical significance versus placebo at weeks 6, 12 and 24. Similar improvements were demonstrated in 
ENHANCE-2 but statistical significance was not achieved due to improvements observed in the placebo group 
over time.

10

•

In ENHANCE-1, QOL as measured by SGRQ* Total Score in the ensifentrine group improved from baseline to 
greater than the MCID of -4 units with a statistically significant improvement compared to placebo at week 24. 
Improvements in QOL were early and sustained with statistical significance versus placebo at weeks 6, 12 and 
24. In ENHANCE-2, QOL as measured by SGRQ* Total Score in the ensifentrine group also improved from 
baseline  to  greater  than  the  MCID  of  -4  units  at  weeks  12  and  24,  numerically  exceeding  placebo  at  each 
measurement, but statistical significance was not achieved due to improvements observed in the placebo group 
over time.

*E-RS, Evaluating Respiratory Symptoms, and SGRQ, St. George’s Respiratory Questionnaire, are validated patient 
reported outcome tools

11

Favorable safety profile

•

Ensifentrine was well tolerated with very few adverse events occurring in more than 1% of subjects and greater 
than placebo over 24 and 48 weeks.

12

We believe ensifentrine, if approved, has the potential to change the treatment paradigm for COPD. The totality of 
data from clinical trials, in particular the top-line results from the ENHANCE program, including improvements in 
measures  of  lung  function,  symptoms,  quality  of  life  measures,  and  exacerbation  reductions,  coupled  with  the 
consistent safety results, support our belief. We plan to submit an NDA to the FDA in the second quarter of 2023.

13

Formulations

Verona  Pharma  has  developed  formulations  of  ensifentrine  for  the  three  most  widely  used  inhalation  devices: 
nebulizer, DPI and pMDI. The nebulized formulation of ensifentrine is designed to be suitable for use in a standard 
jet  nebulizer,  not  a  proprietary  device.  Delivery  of  COPD  medications  by  nebulizer  is  important  because  such 
medications can be used by adults of almost any age and dexterity and regardless of peak inspiratory flow, offering 
advantages to patients who struggle to operate handheld inhaler devices or have low peak inspiratory flow. DPI and 
pMDI handheld inhaler formats are relatively portable and convenient and are also important delivery mechanisms.

While  we  continue  to  focus  on  development  of  the  nebulized  formulation  of  ensifentrine,  we  believe  the 
development  of  pMDI  and  DPI  formulations  of  ensifentrine  provides  additional  lifecycle  opportunities  including 
new  potential  indications,  formulation  combinations  and  collaborations.  In  February  2021,  we  reported  positive 
results from the second, multiple dose part of a Phase 2 trial with pMDI ensifentrine in patients with moderate to 
severe COPD. Ensifentrine delivered by pMDI met all of the primary and secondary lung function endpoints. The 
improvement  in  lung  function  was  dose-ordered  and  statistically  significant  at  peak  and  over  the  12-hour  dosing 
interval  compared  with  placebo,  and  supports  twice-daily  dosing  of  ensifentrine  via  pMDI  for  the  treatment  of 
COPD. Data from the single dose part of the study were reported in March 2020.

Verona Pharma has successfully demonstrated proof of concept in Phase 2 COPD trials with all three formulations. 
In addition, the data from Phase 2 trials were consistent across the three formulations. All three dosage forms have 
demonstrated  statistically  significant  and  clinically  meaningful  improvements  in  lung  function  and  duration  of 
action, supporting twice-daily dosing and a safety profile similar to placebo. 

14

Pipeline

The following table summarizes our development programs.

Potential additional indications for ensifentrine

Cystic fibrosis and asthma

In addition to COPD, we believe ensifentrine has potential applications in other respiratory diseases including CF 
and asthma.

CF  is  a  progressive,  fatal  genetic  disease  without  a  cure  and  a  median  age  of  death  of  46  years.  The  condition  is 
characterized by thick, sticky mucus that damages many of the body’s organs. It causes repeat and persistent lung 
infections  that  result  in  frequent  exacerbations  and  hospitalizations.  Other  symptoms  include  malnutrition, 
constipation and diarrhea, and some adults develop diabetes, arthritis and liver problems.

CF is the most common fatal inherited disease in the U.S. and Europe. Approximately 40,000 people in the U.S. and 
an  estimated  105,000  people  worldwide  have  been  diagnosed  with  CF  across  more  than  90  countries  and 
approximately 1,000 new cases are diagnosed each year, according to the Cystic Fibrosis Foundation. The U.S. and 
European  regulatory  authorities  consider  CF  to  be  a  rare,  or  orphan,  disease  and  provide  incentives  to  encourage 
development of effective new treatments.

CF  patients  endure  multiple  daily  medications,  frequent  exacerbations  and  hospitalizations.  Ultimately,  selected 
patients have lung transplants.

In a Phase 2a clinical trial, a single dose of nebulized ensifentrine demonstrated an improvement in lung function in 
patients  with  CF.  In  addition,  in  preclinical  studies,  ensifentrine  activated  the  cystic  fibrosis  transmembrane 
conductance  regulator  (“CFTR”),  which  is  beneficial  in  reducing  mucous  viscosity  and  improving  mucociliary 
clearance. We believe these data support the continued development of ensifentrine as a potential therapy for CF.

Asthma is a common chronic inflammatory lung condition that causes sporadic breathing difficulties. The disease 
causes  narrowing  and  swelling  of  the  airways  leading  to  symptoms  including  difficulty  breathing,  wheezing, 
coughing and tightness in the chest. Exposure to triggers such as allergens or irritants can lead to asthma attacks.

15

Asthma attacks vary in severity and frequency. More than 260 million people worldwide suffer from asthma and it is 
the  most  common  chronic  disease  among  children,  according  to  estimates  from  the  World  Health  Organization. 
Approximately 60% of adult asthmatics in the U.S. have uncontrolled asthma despite regularly taking medication. 

Although there is no cure, symptoms may be prevented by avoiding triggers and through established maintenance 
therapies including bronchodilators, ICS, anti-IgE agents and leukotriene inhibitors.

Ensifentrine has shown potential in a Phase 2a clinical trial in asthma. The data from this trial, published in October 
2019  in  the  journal  Pulmonary  Pharmacology  &  Therapeutics,  demonstrated  that  ensifentrine  produced  dose-
dependent improvements in lung function that were comparable to current rescue medication, high dose nebulized 
albuterol.  Importantly,  ensifentrine  was  well  tolerated  and  patients  experienced  fewer  systemic  effects  than  those 
receiving albuterol.

Our team

Our expert team has decades of experience in developing and commercializing respiratory therapeutics including the 
following COPD therapeutics: Advair®; Anoro Ellipta®; Breo®; Flovent®; Flutiform®; Incruse Ellipta®; Serevent®; 
Symbicort®; Tudorza Pressair® and Ventolin®.

MANUFACTURING 

We  do  not  have  manufacturing  facilities  and  rely  on,  and  expect  to  continue  to  rely  on,  third-party  contract 
manufacturing organizations (“CMOs”) for the supply of current good manufacturing practices (“cGMP”) compliant 
clinical  trial  materials  of  ensifentrine,  and  any  future  product  candidates,  as  well  as  for  commercial  quantities  of 
ensifentrine and any future product candidates, if approved. We currently do not have any agreements for the long-
term commercial production of ensifentrine. 

While  we  may  contract  with  other  CMOs  in  the  future,  we  currently  have  one  CMO  for  the  manufacture  of 
ensifentrine drug substance and one CMO for each formulation of ensifentrine.

All of our current CMOs have commercial scale manufacturing capabilities. We believe that the ensifentrine drug 
substance  and  drug  product  manufacturing  processes  can  be  transferred  to  other  CMOs  to  produce  clinical  and 
commercial supplies in the ordinary course of business.

COMMERCIALIZATION

United States

In  the  United  States,  we  are  preparing  to  commercialize  nebulized  ensifentrine  ourselves,  if  approved.  Current 
maintenance COPD treatments in the U.S. generate approximately $10 billion in sales. In the US, approximately 8.5 
million patients receive chronic maintenance treatment for COPD. These patients receive LAMAs, LABAs, and ICS 
products alone or in combination across all COPD severities. Despite the use of these therapies, approximately 50% 
of  patients  report  having  symptoms  for  more  than  24  days  a  month.  This  burden  is  significant  and  highlights  the 
need for new and novel mechanisms of actions to treat COPD patients. These patients need therapies that can help 
improve their lung function and symptoms. In addition to the number of patients that remain symptomatic, COPD 
places  a  tremendous  burden  on  the  U.S.  healthcare  system  with  approximately  $50  billion  in  direct  and  indirect 
costs.

Based on our market research, conducted with U.S. healthcare providers and payers, we believe ensifentrine would 
be widely adopted with use as an add on therapy across all symptomatic patients regardless of COPD severity and 
treatment. Most of ensifentrine’s use would be as an add on therapy to current patients who are on LAMA LABA / 
ICS, LAMA/LABA, or triple therapy. This is due to the urgent unmet need for new therapies to help improve lung 
function,  symptoms  and  quality  of  life  in  these  patients.  Our  market  research  also  suggests  the  majority  of 
ensifentrine  usage  would  be  initially  commenced  by  pulmonologists.  Due  to  this  focused  prescriber  base,  we 
anticipate a field sales force of approximately 100 representatives would be able to reach the potential ensifentrine 
opportunity. 

16

International

COPD affects over 384 million people worldwide with many patients remaining undiagnosed. Our strategy outside 
of the U.S. including Asia, Europe and Latin America, is to establish partnerships with leading companies that can 
support the further development and commercialization of ensifentrine in those regions.

In  June  2021,  we  executed  on  this  strategy  by  entering  into  a  strategic  collaboration  with  Nuance  Pharma,  a 
Shanghai-based  specialty  pharmaceutical  company,  with  a  potential  value  of  up  to  $219.0  million  to  develop  and 
commercialize  ensifentrine  in  Greater  China.  Under  the  terms  of  the  agreement,  we  granted  Nuance  Pharma  the 
exclusive  rights  to  develop  and  commercialize  ensifentrine  in  Greater  China.  In  return,  we  received  an  aggregate 
$40.0 million upfront payment consisting of $25.0 million in cash and an equity interest valued at $15.0 million, as 
of  June  9,  2021,  in  Nuance  Biotech,  the  parent  company  of  Nuance  Pharma.  We  are  eligible  to  receive  further 
milestone payments of up to $179.0 million that are triggered upon achievement of certain clinical, regulatory and 
commercial milestones as well as tiered double-digit royalties on net sales in Greater China.

Nuance Pharma is responsible for all costs related to clinical development and commercialization in Greater China. 
A  joint  steering  committee  has  been  established  to  ensure  ensifentrine’s  clinical  development  in  the  region  aligns 
with our global development and commercialization strategy. In August 2022, Nuance Pharma, received clearance 
from China’s Center for Drug Evaluation to begin Phase 1 and Phase 3 studies of ensifentrine for COPD in mainland 
China. 

COMPETITION

The  pharmaceutical  industry  is  characterized  by  rapidly  advancing  technologies,  intense  competition  and  a  strong 
emphasis  on  proprietary  drugs.  We  face  potential  competition  from  many  different  sources,  including  major 
pharmaceutical,  specialty  pharmaceutical  and  biotechnology  companies,  academic  institutions,  governmental 
agencies  and  public  and  private  research  institutions.  If  successfully  developed  and  commercialized,  ensifentrine 
will compete with existing treatments and new treatments that may become available in the future.

Ensifentrine  is  a  unique,  first-in-class  therapeutic  candidate  with  both  bronchodilator  and  non-steroidal  anti-
inflammatory properties in a single compound. As far as we are aware, no other dual PDE3 and PDE4 inhibitor is on 
the market nor in clinical development in the U.S. or Europe. Based on our market research, we expect ensifentrine 
to be used across the patient spectrum regardless of severity. We expect it will mainly be used as an add on therapy 
in  symptomatic  patients  across  all  existing  classes  of  therapies  (LAMA,  LABA,  ICS).  Some  healthcare  providers 
have indicated that they would use ensifentrine as a monotherapy based on ensifentrine’s clinical profile. 

Consequently, we believe that, if approved, nebulized ensifentrine’s unique profile will enable it to compete with all 
approved  COPD  therapies  including  nebulized  and  handheld  inhaler  formulations,  DPI  and  pMDI.  Furthermore, 
because ensifentrine’s mechanism of action is complementary to available therapies, we believe it could be used in 
addition to these treatments.

Within the currently approved nebulizer products for the maintenance treatment of COPD, we consider ensifentrine's 
potential  competitors  in  the  U.S.  market  to  be  LABAs  (Brovana®  and  Perforomist®)  and  LAMAs  (Yupelri®  and 
Lonhala®Magnair®). 

In  the  DPI/pMDI  maintenance  treatment  of  COPD  market,  ensifentrine’s  current  closest  potential  competitors  are 
Symbicort®,  a  combination  of  a  long-acting  beta2-agonist  bronchodilator  and  ICS  marketed  by  AstraZeneca  plc, 
Spiriva®,  a  long-acting  anti-muscarinic  bronchodilator  marketed  by  Boehringer  Ingelheim  GmbH,  Advair®,  a 
combination  of  a  long-acting  beta2-agonist  bronchodilator  and  ICS  marketed  by  GlaxoSmithKline  plc,  Utibron 
Neohaler®,  a  combination  of  a  long-acting  beta2-agonist  and  long-acting  anti-muscarinic  bronchodilator  marketed 
by Novartis International AG, Breo®, a combination of a long-acting beta2-agonist bronchodilator and ICS marketed 
by GlaxoSmithKline, and Anoro®, a combination of a long-acting beta2-agonist bronchodilator and long-acting anti-
muscarinic bronchodilator marketed by GlaxoSmithKline. A triple-combination therapy of a LAMA, a LABA and 
ICS,  developed  by  GlaxoSmithKline  and  Chiesi  Farmaceutici  S.p.A.,  Trelegy  Ellipta®,  has  been  approved  in  the 
U.S.  and  the  European  Union  and  AstraZeneca  also  has  a  triple-therapy  combination  product  (LAMA  /  LABA  / 
ICS), Breztri Aerosphere® that was approved in the U.S. in July 2020, in the European Union in December 2020 and 
in China in December 2019. 

Other  potential  therapies  in  clinical  development  for  the  prevention  of  COPD  exacerbations  include  injectable 
biologics.  Sanofi’s  anti-IL4,  Dupixent®,  AstraZeneca’s  anti-IL5,  Fasenra®,  GlaxoSmithKline’s  anti-IL5,  Nucala®, 
and Chiesi’s PDE4 inhibitor, tanimilast, are in Phase 3 trials. We are also aware of several anti-inflammatories and 
bronchodilators that are in Phase 2 clinical trials for the treatment of COPD.

17

INTELLECTUAL PROPERTY

We  strive  to  protect  and  enhance  the  proprietary  technologies,  inventions  and  improvements  that  we  believe  are 
important to our business, including seeking, maintaining and defending patent rights, whether developed internally 
or  licensed  from  third  parties.  Our  policy  is  to  seek  to  protect  our  proprietary  position  by,  among  other  methods, 
pursuing and obtaining patent protection in the U.S. and in jurisdictions outside of the U.S. related to our proprietary 
technology, inventions, improvements, platforms and our product candidates that are important to the development 
and implementation of our business. 

As  of  December  31,  2022,  our  patent  portfolio  consisted  of  ten  issued  U.S.  patents,  eight  pending  U.S.  patent 
applications (including four U.S. provisional patent applications), 70 issued foreign patents and 76 pending foreign 
applications.  These  patents  and  patent  applications  include  claims  directed  to  certain  respirable  formulations 
comprising  ensifentrine,  a  crystalline  form  of  ensifentrine,  combinations  of  ensifentrine  with  certain  respiratory 
drugs, certain salts of ensifentrine, ensifentrine for use in the treatment of cystic fibrosis and for use in the treatment 
of certain aspects of some other respiratory disorders, and a method of making ensifentrine, with expected expiry 
dates up to 2042. 

Individual patents extend for varying periods depending on the date of filing of the patent application or the date of 
patent issuance and the legal term of patents in the countries in which they are obtained. Generally, patents issued 
for  regularly  filed  applications  in  the  United  States  are  granted  a  term  of  20  years  from  the  earliest  effective 
non-provisional filing date. In addition, in certain instances, a patent term can be extended to recapture a portion of 
the U.S. Patent and Trademark Office, or the USPTO, delay in issuing the patent as well as a portion of the term 
effectively lost as a result of the FDA regulatory review period. However, as to the FDA component, the restoration 
period cannot be longer than five years and the total patent term including the restoration period must not exceed 14 
years following FDA approval. The duration of foreign patents varies in accordance with provisions of applicable 
local  law,  but  typically  is  also  20  years  from  the  earliest  effective  filing  date.  However,  the  actual  protection 
afforded by a patent varies on a product-by-product basis, from country to country and depends upon many factors, 
including  the  type  of  patent,  the  scope  of  its  coverage,  the  availability  of  regulatory-related  extensions,  the 
availability of legal remedies in a particular country and the validity and enforceability of the patent. 

Furthermore,  we  rely  upon  trade  secrets  and  know-how  and  continuing  technological  innovation  to  develop  and 
maintain  our  competitive  position.  We  seek  to  protect  our  proprietary  information,  in  part,  using  confidentiality 
agreements  with  our  collaborators,  employees  and  consultants  and  invention  assignment  agreements  with  our 
employees. We also have confidentiality agreements or invention assignment agreements with our collaborators and 
selected  consultants.  These  agreements  are  designed  to  protect  our  proprietary  information  and,  in  the  case  of  the 
invention assignment agreements, to grant us ownership of technologies that are developed through a relationship 
with a third party. These agreements may be breached, and we may not have adequate remedies for any breach. In 
addition,  our  trade  secrets  may  otherwise  become  known  or  be  independently  discovered  by  competitors.  To  the 
extent that our collaborators, employees and consultants 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. 
Our commercial success will also depend in part on not infringing upon the proprietary rights of third parties. It is 
uncertain whether the issuance of any third-party patent would require us to alter our development or commercial 
strategies, or our drugs or processes, obtain licenses or cease certain activities. Our breach of any license agreements 
or failure to obtain a license to proprietary rights that we may require to develop or commercialize our future drugs 
may have an adverse impact on us. If third parties have prepared and filed patent applications prior to March 16, 
2013  in  the  United  States  that  also  claim  technology  to  which  we  have  rights,  we  may  have  to  participate  in 
interference proceedings in the USPTO, to determine priority of invention. For more information, please see “Item 
1A. Risk Factors - Risks Related to Intellectual Property and Information Technology.”

License agreement with Ligand (formerly Vernalis)

In February 2005, Rhinopharma Limited (“Rhinopharma”) entered into an assignment and license agreement with 
Ligand UK Development Limited (formerly Vernalis Development Limited) (“Ligand”), which since October 2018 
has been a wholly owned subsidiary of Ligand Pharmaceuticals, Inc. In 2006, we acquired Rhinopharma and all its 
rights and liabilities under the assignment and license agreement. On March 24, 2022, we entered into an agreement 
with Ligand to amend the assignment and license agreement. We refer to the assignment and license agreement and 
the  amendment  agreement  together  as  the  Ligand  Agreement.  Pursuant  to  the  Ligand  Agreement,  Ligand  has 
assigned to us all its rights to certain patents and patent applications relating to ensifentrine and related compounds, 
or the Ligand Patents. We cannot further assign the Ligand Patents to a third party without Ligand's prior consent. 
Ligand  also  granted  to  us  an  exclusive,  worldwide,  royalty-bearing  license  under  certain  Ligand  know-how  to 

18

develop,  manufacture  and  commercialize  products,  or  the  Licensed  Products,  based  on  PDE  inhibitors  developed 
using Ligand Patents, Ligand know-how and the physical stock of certain compounds, including ensifentrine, which 
we refer to as the Program IP, in the treatment of human or animal allergic or inflammatory disorders. Pursuant to 
the Ligand Agreement, we must maintain the Ligand Patents and use commercially reasonable and diligent efforts to 
develop and commercialize the Licensed Products. 

In  March  2022,  we  entered  into  an  Amendment  Agreement  (the  “Amendment”)  with  Ligand  whereby  the  Ligand 
Agreement was amended to clarify certain ambiguous terms in the Ligand Agreement. Pursuant to the Amendment:

• 
we agreed to pay to Ligand (i) $2.0 million within five business days of the date of the Amendment and (ii) 
$15.0 million upon the first commercial sale of ensifentrine by us or a sub-licensee, which amount is payable in cash 
or, at the our discretion, by the issuance of Company equity of equivalent value, as determined based on the volume-
weighted  average  price  of  the  our  American  Depositary  Shares  on  the  Nasdaq  Global  Market  over  the  ten  (10) 
trading days including and prior to such milestone event;

• 
Company of equivalent value; and

the  milestone  payment  may  be  paid  in  cash  or,  at  our  discretion,  by  issuing  to  Ligand  shares  in  the 

We  paid  the  $2.0  million  to  Ligand  in  March,  2022  and  accounted  for  the  $2.0  million  payment  at  execution  as 
selling, general and administrative expense in the consolidated statements of operations as the payment is related to 
a contract modification.

The Ligand Agreement expires on March 24, 2042, unless terminated earlier by either party in accordance with its 
terms. Either party may terminate the Ligand Agreement for bankruptcy or insolvency of the other party, or for an 
uncured  material  breach  of  the  other  party,  conditional  upon  the  party  seeking  to  terminate  obtaining  a  final 
judgment of the English High Court declaring that the other party is in material breach of its obligations under the 
Ligand  Agreement.  We  may  terminate  the  Ligand  Agreement  upon  90  days'  prior  written  notice.  Ligand  may 
terminate the Ligand Agreement if we notify Ligand of our intention to abandon any Ligand Patents or allow any 
Ligand  Patents  to  lapse.  Upon  termination  of  the  Ligand  Agreement,  we  must  cease  use  of  any  Program  IP  and 
assign  the  Ligand  Patents  and  any  improvements  thereto  back  to  Ligand,  provided  however,  that  any  of  our 
sublicensees shall have the right to enter into a direct license agreement with Ligand for the portion of the Program 
IP that was sub-licensed by such sub-licensee.

GOVERNMENT REGULATION

The  FDA  and  comparable  regulatory  authorities  in  state  and  local  jurisdictions  and  in  other  countries  impose 
substantial  and  burdensome  requirements  upon  companies  involved  in  the  clinical  development,  manufacture, 
marketing  and  distribution  of  drugs  such  as  those  we  are  developing.  These  agencies  and  other  federal,  state  and 
local and foreign entities regulate, among other things, the research and development, testing, manufacture, quality 
control,  safety,  effectiveness,  labeling,  storage,  record  keeping,  approval,  advertising  and  promotion,  distribution, 
post-approval monitoring and reporting, sampling and export and import of our product candidates.

FDA drug approval process 

In  the  U.S.,  the  FDA  regulates  drugs  under  the  Federal  Food,  Drug,  and  Cosmetic  Act  (“FDCA”)  and  its 
implementing  regulations.  The  process  of  obtaining  regulatory  approvals  and  the  subsequent  compliance  with 
applicable federal, state, local and foreign statutes and regulations requires the expenditure of substantial time and 
financial  resources.  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 to a variety of administrative or 
judicial sanctions, such as the FDA's refusal to file an application for review or non-approval of a pending new drug 
applications (“NDA”), withdrawal of an approval, imposition of a clinical hold, issuance of warning letters, product 
recalls,  product  seizures,  total  or  partial  suspension  of  production  or  distribution,  injunctions,  fines,  refusals  of 
government contracts, restitution, disgorgement or civil or criminal penalties.

The  process  required  by  the  FDA  before  a  drug  may  be  marketed  in  the  United  States  generally  involves  the 
following: 

•

•

Completion  of  non-clinical  laboratory  tests,  animal  studies  and  formulation  studies  in  compliance  with  the 
FDA's good laboratory practice (“GLP”) regulations; 

Submission  to  the  FDA  of  an  investigational  new  drug  application  (“IND”),  which  must  become  effective 
before human clinical trials may begin in the U.S.;

19

•

•

•

•

•

•

Approval by an independent institutional review board (“IRB”) or ethics committee at each clinical site before 
each trial may be initiated; 

Performance  of  adequate  and  well-controlled  human  clinical  trials  in  accordance  with  good  clinical  practice 
(“GCP”) requirements to establish the safety and efficacy of the proposed drug product for each indication;

Submission to the FDA of an NDA after completion of all pivotal trials; 

Completion of an FDA advisory committee review, if required by the FDA;

Satisfactory completion of an FDA inspection of the manufacturing facility or facilities at which the product is 
produced to assess compliance with current good manufacturing practice (“cGMP”) requirements and to assure 
that the facilities, methods and controls are adequate to preserve the drug's identity, strength, quality and purity, 
and of selected clinical investigation sites to assess compliance with GCP; and 

FDA review and approval of the NDA and U.S. Prescribing Information to permit commercial marketing of the 
product for particular indications for use in the U.S.

Non-clinical Studies 

Non-clinical studies include laboratory evaluation of product chemistry, toxicity and formulation, as well as animal 
studies  to  assess  potential  safety  and  efficacy.  An  IND  sponsor  must  submit  the  results  of  the  non-clinical  tests, 
together with manufacturing information, analytical data and any available clinical data or literature, among other 
things,  to  the  FDA  as  part  of  an  IND.  An  IND  is  a  request  for  authorization  from  the  FDA  to  ship  in  interstate 
commerce and administer an investigational new drug product to humans. An IND automatically becomes effective 
30  days  after  receipt  by  the  FDA,  unless  before  that  time  the  FDA  raises  concerns  or  questions  related  to  one  or 
more proposed clinical trials and places the clinical trial on a clinical hold. In such a case, the IND sponsor and the 
FDA must resolve any outstanding concerns before the clinical trial can begin. As a result, submission of an IND 
may not result in the FDA allowing clinical trials to commence. 

Clinical Trials 

Clinical trials involve the administration of the investigational new drug to human subjects under the supervision of 
qualified  investigators  in  accordance  with  GCP  requirements,  which  include  the  requirement  that  all  research 
subjects or a legal representative provide their informed consent in writing for their participation in any clinical trial. 
Clinical trials are conducted under protocols detailing, among other things, the objectives or endpoints of the trial, 
the parameters to be used in monitoring safety, and the effectiveness criteria to be evaluated. A protocol for each 
clinical trial and any subsequent protocol amendments must be submitted to the FDA as part of the IND. In addition, 
an IRB at each institution participating in the clinical trial must review and approve the plan for any clinical trial 
before it commences at that institution. Regulatory authorities, the IRB or the sponsor may suspend a clinical trial at 
any time on various grounds, including a finding that the subjects are being exposed to an unacceptable health risk 
or that the trial is unlikely to meet its stated objectives. Some studies also include oversight by an independent group 
of qualified experts organized by the clinical study sponsor, known as a data safety monitoring board, which reviews 
the  data  and  recommends  whether  or  not  a  study  may  move  forward  at  designated  checkpoints.  It  may  halt  the 
clinical trial if it determines that there is an unacceptable safety risk or on other grounds, such as no demonstration 
of  efficacy.  Information  about  certain  clinical  trials  must  be  submitted  within  specific  timeframes  to  the  National 
Institutes of Health, or NIH, for public dissemination on their www.clinicaltrials.gov website. 

Human clinical trials are typically conducted in three phases, which may overlap or be combined: 

•

•

•

Phase  1:  The  drug  candidate  is  initially  introduced  into  healthy  human  subjects  or  patients  with  the  target 
disease or condition and tested for safety, dosage tolerance, absorption, metabolism, distribution, excretion and, 
if possible, to gain an early indication of its effectiveness. 

Phase 2: The drug candidate is administered to 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 and optimal dosage. 

Phase  3:  The  drug  candidate  is  administered  to  an  expanded  patient  population,  generally  at  geographically 
dispersed clinical trial sites, in well-controlled clinical trials to generate enough data to statistically evaluate the 
efficacy and safety of the product for approval, to establish the overall risk-benefit profile of the product, and to 
provide adequate information for the labeling of the product. 

Post-approval  trials,  sometimes  referred  to  as  Phase  4  studies,  may  be  conducted  after  initial  marketing  approval. 
These  trials  are  used  to  gain  additional  experience  from  the  treatment  of  patients  in  the  intended  therapeutic 

20

indication. In certain instances, the FDA may mandate the performance of Phase 4 clinical trials as a condition of 
approval of an NDA.

During  the  development  of  a  new  drug,  sponsors  are  given  opportunities  to  meet  with  the  FDA  at  certain  points. 
These  points  may  be  prior  to  submission  of  an  IND,  at  the  end  of  Phase  2,  and  before  an  NDA  is  submitted. 
Meetings  at  other  times  may  be  requested.  These  meetings  can  provide  an  opportunity  for  the  sponsor  to  share 
information  about  the  data  gathered  to  date,  for  the  FDA  to  provide  advice,  and  for  the  sponsor  and  the  FDA  to 
reach agreement on the next phase of development. Sponsors typically use the meetings at the end of the Phase 2 
trial to discuss Phase 2 clinical results and present plans for the pivotal Phase 3 clinical trials that they believe will 
support approval of the new drug. 

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

Marketing Approval 

Assuming  successful  completion  of  the  required  clinical  testing,  the  results  of  the  pre-clinical  studies  and  clinical 
trials,  together  with  detailed  information  relating  to  the  product's  chemistry,  manufacture,  controls  and  proposed 
labeling, among other things, are submitted to the FDA as part of an NDA requesting approval to market the product 
for one or more indications. In most cases, the submission of an NDA is subject to a substantial application user fee.

The  FDA  conducts  a  preliminary  review  of  all  NDAs  within  the  first  60  days  after  submission,  before  accepting 
them  for  filing,  to  determine  whether  they  are  sufficiently  complete  to  permit  substantive  review.  The  FDA  may 
request  additional  information  rather  than  accept  an  NDA  for  filing.  In  this  event,  the  application  must  be 
resubmitted with the additional information. The resubmitted application is also 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.  The  FDA  reviews  an 
NDA to determine, among other things, whether the drug is safe and effective and whether the facility in which it is 
manufactured,  processed,  packaged  or  held  meets  standards  designed  to  assure  the  product's  continued  safety, 
quality and purity. Under the Prescription Drug User Fee Act guidelines that are currently in effect, the FDA has a 
goal of ten months from the date of “filing” of a standard NDA for a new molecular entity to review and act on the 
submission.  This  review  typically  takes  twelve  months  from  the  date  the  NDA  is  submitted  to  FDA  because  the 
FDA has approximately two months to make a “filing” decision after it the application is submitted.

The FDA may refer an application for a novel drug to an advisory committee. An advisory committee is a panel of 
independent  experts,  including  clinicians  and  other  scientific  experts,  that  reviews,  evaluates  and  provides  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. 

Before  approving  an  NDA,  the  FDA  typically  will  inspect  the  facility  or  facilities  where  the  product  is 
manufactured. The FDA will not approve an application unless it determines that the manufacturing processes and 
facilities  are  in  compliance  with  cGMP  requirements  and  adequate  to  assure  consistent  production  of  the  product 
within required specifications. Additionally, before approving an NDA, the FDA may inspect one or more clinical 
trial sites to assure compliance with GCP requirements.

After  evaluating  the  NDA  and  all  related  information,  including  the  advisory  committee  recommendation,  if  any, 
and inspection reports regarding the manufacturing facilities and clinical trial sites, the FDA may issue an approval 
letter,  or,  in  some  cases,  a  complete  response  letter.  A  complete  response  letter  generally  contains  a  statement  of 
specific conditions that must be met in order to secure final approval of the NDA and may require additional clinical 
or  pre-clinical  testing  in  order  for  FDA  to  reconsider  the  application.  Even  with  submission  of  this  additional 
information, the FDA ultimately may decide that the application does not satisfy the regulatory criteria for approval. 
If  and  when  those  conditions  have  been  met  to  the  FDA's  satisfaction,  the  FDA  will  typically  issue  an  approval 
letter.  An  approval  letter  authorizes  commercial  marketing  of  the  drug  with  specific  prescribing  information  for 
specific indications. 

21

If regulatory approval of a product is granted, such approval will be granted for particular indications and may entail 
limitations on the indicated uses for which such product may be marketed. For example, the FDA may approve the 
NDA with a Risk Evaluation and Mitigation Strategy (“REMS”) to ensure the benefits of the product outweigh its 
risks. A REMS is a safety strategy to manage a known or potential serious risk associated with a medicine and to 
enable patients to have continued access to such medicines by managing their safe use, and could include medication 
guides,  physician  communication  plans,  or  elements  to  assure  safe  use,  such  as  restricted  distribution  methods, 
patient registries, and other risk minimization tools. The FDA also may condition approval on, among other things, 
changes to proposed labeling or the development of adequate controls and specifications. The FDA may also require 
one  or  more  Phase  4  post-market  studies  and  surveillance  to  further  assess  and  monitor  the  product’s  safety  and 
effectiveness after commercialization, and may limit further marketing of the product based on the results of these 
post-marketing studies. 

In addition, the Pediatric Research Equity Act (“PREA”) requires a sponsor to conduct pediatric clinical trials for 
most  drugs,  for  a  new  active  ingredient,  new  indication,  new  dosage  form,  new  dosing  regimen  or  new  route  of 
administration.  Under  PREA,  original  NDAs  and  supplements  must  contain  a  pediatric  assessment  unless  the 
sponsor has received a deferral or waiver from the FDA. 

The  FDA  offers  a  number  of  expedited  development  and  review  programs  for  qualifying  product  candidates.  For 
example, the fast track program is intended to expedite or facilitate the process for reviewing new products that are 
intended  to  treat  a  serious  or  life-threatening  disease  or  condition  and  demonstrate  the  potential  to  address  unmet 
medical  needs  for  the  disease  or  condition.  Fast  track  designation  applies  to  the  combination  of  the  product 
candidate and the specific indication for which it is being studied. The sponsor of a fast track product candidate has 
opportunities for more frequent interactions with the applicable FDA review team during product development and, 
once an NDA is submitted, the product candidate may be eligible for priority review. A fast track product candidate 
may also be eligible for rolling review, where the FDA may consider for review sections of the NDA on a rolling 
basis  before  the  complete  application  is  submitted,  if  the  sponsor  provides  a  schedule  for  the  submission  of  the 
sections of the NDA, the FDA agrees to accept sections of the NDA and determines that the schedule is acceptable, 
and the sponsor pays any required user fees upon submission of the first section of the NDA. 

A  product  candidate  intended  to  treat  a  serious  or  life-threatening  disease  or  condition  may  also  be  eligible  for 
breakthrough  therapy  designation  to  expedite  its  development  and  review.  A  product  candidate  can  receive 
breakthrough  therapy  designation  if  preliminary  clinical  evidence  indicates  that  the  product  candidate,  alone  or  in 
combination  with  one  or  more  other  drugs  or  biologics,  may  demonstrate  substantial  improvement  over  existing 
therapies  on  one  or  more  clinically  significant  endpoints,  such  as  substantial  treatment  effects  observed  early  in 
clinical development. The designation includes all of the fast track program features, as well as more intensive FDA 
interaction  and  guidance  beginning  as  early  as  Phase  1  and  an  organizational  commitment  to  expedite  the 
development and review of the product candidate, including involvement of senior managers.

Any marketing application for a drug submitted to the FDA for approval, including a product candidate with a fast 
track  designation  and/or  breakthrough  therapy  designation,  may  be  eligible  for  other  types  of  FDA  programs  to 
expedite  the  FDA  review  and  approval  process,  such  as  priority  review  and  accelerated  approval.  An  NDA  is 
eligible  for  priority  review  if  the  product  candidate  is  designed  to  treat  a  serious  or  life-threatening  disease  or 
condition,  and  if  approved,  would  provide  a  significant  improvement  in  safety  or  effectiveness  compared  to 
available  alternatives  for  such  disease  or  condition.  For  new  molecular  entity  NDAs,  priority  review  designation 
means the FDA’s goal is to take action on the marketing application within six months of the 60-day filing date (as 
compared to ten months under standard review). 

Additionally,  product  candidates  studied  for  their  safety  and  effectiveness  in  treating  serious  or  life-threatening 
diseases  or  conditions  may  receive  accelerated  approval  upon  a  determination  that  the  product  has  an  effect  on  a 
surrogate endpoint that is reasonably likely to predict clinical benefit, or on a clinical endpoint that can be measured 
earlier than irreversible morbidity or mortality, that is reasonably likely to predict an effect on irreversible morbidity 
or mortality or other clinical benefit, taking into account the severity, rarity, or prevalence of the condition and the 
availability or lack of alternative treatments. As a condition of accelerated approval, the FDA will generally require 
the  sponsor  to  perform  adequate  and  well-controlled  confirmatory  clinical  studies  to  verify  and  describe  the 
anticipated  effect  on  irreversible  morbidity  or  mortality  or  other  clinical  benefit.  Products  receiving  accelerated 
approval may be subject to expedited withdrawal procedures if the sponsor fails to conduct the required studies in a 
timely manner or if such studies fail to verify the predicted clinical benefit. In addition, the FDA currently requires 
as  a  condition  for  accelerated  approval  pre-approval  of  promotional  materials,  which  could  adversely  impact  the 
timing of the commercial launch of the product. 

22

Fast  track  designation,  breakthrough  therapy  designation,  priority  review,  and  accelerated  approval  do  not  change 
the  standards  for  approval  but  may  expedite  the  development  or  approval  process.  Even  if  a  product  candidate 
qualifies  for  one  or  more  of  these  programs,  the  FDA  may  later  decide  that  the  product  no  longer  meets  the 
conditions for qualification or decide that the time period for FDA review or approval will not be shortened.

Orphan drug designation and exclusivity

Under  the  Orphan  Drug  Act,  the  FDA  may  grant  orphan  designation  to  a  drug  intended  to  treat  a  rare  disease  or 
condition, defined as a disease or condition with a patient population of fewer than 200,000 individuals in the United 
States, or a patient population greater than 200,000 individuals in the United States and when there is no reasonable 
expectation  that  the  cost  of  developing  and  making  available  the  drug  or  biologic  in  the  United  States  will  be 
recovered  from  sales  in  the  United  States  for  that  drug  or  biologic.  Orphan  drug  designation  must  be  requested 
before  submitting  an  NDA.  After  the  FDA  grants  orphan  drug  designation,  the  generic  identity  of  the  therapeutic 
agent and its potential orphan use are disclosed publicly by the FDA.

If a product that has orphan drug designation subsequently receives the first FDA approval for a particular active 
ingredient 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, including a full NDA, to market the 
same drug for the same disease or condition for seven years, except in limited circumstances, such as a showing of 
clinical superiority to the product with orphan drug exclusivity or if the FDA finds that the holder of the orphan drug 
exclusivity has not shown that it can assure the availability of sufficient quantities of the orphan drug to meet the 
needs of patients with the disease or condition for which the drug was designated. Orphan drug exclusivity does not 
prevent the FDA from approving a different drug for the same disease or condition, or the same drug for a different 
disease or condition. Among the other benefits of orphan drug designation are tax credits for certain research and a 
waiver of the NDA application user fee.

A designated orphan drug many not receive orphan drug exclusivity if it is approved for a use that is broader than 
the  disease  or  condition  for  which  it  received  orphan  designation.  In  addition,  orphan  drug  exclusive  marketing 
rights in the United States may be lost if the FDA later determines that the request for designation was materially 
defective or, as noted above, if a second applicant demonstrates that its product is clinically superior to the approved 
product with orphan exclusivity or the manufacturer of the approved product is unable to assure sufficient quantities 
of the product to meet the needs of patients with the rare disease or condition. 

Post-Approval Requirements 

Drugs manufactured or distributed pursuant to FDA approvals are subject to pervasive and continuing regulation by 
the  FDA,  including,  among  other  things,  requirements  relating  to  recordkeeping,  periodic  reporting,  product 
sampling and distribution, advertising and promotion and reporting of adverse experiences with the product. After 
approval, most changes to the approved product, such as adding new indications or other labeling claims are subject 
to  prior  FDA  review  and  approval.  There  also  are  continuing,  annual  user  fee  requirements  for  any  marketed 
products  under  which  NDA  applicants  must  pay  a  substantial  “program  fee”  for  each  prescription  drug  product 
approved in an NDA. 

In addition, drug manufacturers and other entities involved in the manufacture and distribution of approved drugs 
are  required  to  register  their  establishments  with  the  FDA  and  state  agencies,  and  are  subject  to  periodic 
unannounced inspections by the FDA and these state agencies for compliance with cGMP requirements. Changes to 
the  manufacturing  process  are  strictly  regulated  and  often  require  prior  FDA  approval  before  being  implemented. 
FDA regulations also require investigation and correction of any deviations from cGMP requirements and impose 
reporting and documentation requirements upon the sponsor and any third-party manufacturers that the sponsor may 
decide to use. Accordingly, manufacturers must continue to expend time, money and effort in the area of production 
and quality control to maintain cGMP compliance. 

Once an approval is granted, the FDA may withdraw the approval if compliance with regulatory requirements and 
standards is not maintained or if problems occur after the product reaches the market. Later discovery of previously 
unknown  problems  with  a  product,  including  adverse  events  of  unanticipated  severity  or  frequency,  or  with 
manufacturing  processes,  or  failure  to  comply  with  regulatory  requirements,  may  result  in  mandatory  revisions  to 
the  approved  labeling  to  add  new  safety  information;  imposition  of  post-market  studies  or  clinical  trials  to  assess 
new  safety  risks;  or  imposition  of  distribution  or  other  restrictions  under  a  REMS  program.  Other  potential 
consequences include, among other things:

•

Restrictions  on  the  marketing  or  manufacturing  of  the  product,  complete  withdrawal  of  the  product  from  the 
market or product recalls;

23

•

•

•

•

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

Refusal of the FDA to approve pending NDAs or supplements to approved NDAs, or suspension or revocation 
of product approvals; 

Product seizure or detention, or refusal to permit the import or export of products; or 

Injunctions or the imposition of civil or criminal penalties. 

The FDA strictly regulates marketing, labeling, advertising and promotion of products that are placed on the market. 
Drugs may be promoted only for the approved indications and in accordance with the provisions of the approved 
label. The FDA and other agencies actively enforce the laws and regulations prohibiting the promotion of off-label 
uses, and a company that is found to have improperly promoted off-label uses may be subject to significant liability. 
Failure  to  comply  with  these  requirements  can  result  in,  among  other  things,  adverse  publicity,  warning  letters, 
corrective advertising and potential civil and criminal penalties.

Drug Product Marketing Exclusivity 

Market  exclusivity  provisions  authorized  under  the  FDCA  can  delay  the  submission  or  the  approval  of  certain 
marketing applications. For example, the FDCA provides a five-year period of non-patent data exclusivity within the 
United  States  to  the  first  applicant  to  obtain  approval  of  an  NDA  for  a  new  chemical  entity.  A  drug  is  a  new 
chemical  entity  if  the  FDA  has  not  previously  approved  any  other  new  drug  containing  the  same  active  moiety, 
which is the molecule or ion responsible for the action of the drug substance. During the exclusivity period, the FDA 
may not approve or even accept for review an abbreviated new drug application (“ANDA”) or an NDA submitted 
under Section 505(b)(2) (a “505(b)(2) NDA”), submitted by another company for another drug based on the same 
active moiety, regardless of whether the drug is intended for the same indication as the original innovative drug or 
for another indication, where the applicant does not own or have a legal right of reference to all the data required for 
approval. However, an application may be submitted after four years if it contains a certification of patent invalidity 
or non-infringement to one of the patents listed with the FDA by the innovator NDA holder. 

The  FDCA  alternatively  provides  three  years  of  marketing  exclusivity  for  an  NDA,  or  supplement  to  an  existing 
NDA  if  new  clinical  investigations,  other  than  bioavailability  studies,  that  were  conducted  or  sponsored  by  the 
applicant  are  deemed  by  the  FDA  to  be  essential  to  the  approval  of  the  application,  for  example  new  indications, 
dosages or strengths of an existing drug. This three-year exclusivity covers only the modification for which the drug 
received  approval  on  the  basis  of  the  new  clinical  investigations  and  does  not  prohibit  the  FDA  from  approving 
ANDAs  or  505(b)(2)  NDAs  for  drugs  containing  the  active  agent  for  the  original  indication  or  condition  of  use. 
Five-year and three-year exclusivity will not delay the submission or approval of a full NDA. However, an applicant 
submitting  a  full  NDA  would  be  required  to  conduct  or  obtain  a  right  of  reference  to  any  preclinical  studies  and 
adequate and well-controlled clinical trials necessary to demonstrate safety and effectiveness.

Foreign regulation

In order to market any medicinal product outside of the U.S., similar regulatory requirements, including adherence 
to GLP, Good Clinical Practices (“GCP”) and Good Manufacturing Practice (“GMP”), to initiate clinical trials and, 
subsequently,  to  obtain  marketing  approval  of  a  new  pharmaceutical  product  are  in  place  in  each  jurisdiction  and 
vary country to country.

Each  jurisdiction  will  apply  these  regulations  in  their  assessment  of  clinical  trial  applications  and  marketing 
authorization  applications.  The  foreign  regulatory  approval  process  includes  all  of  the  risks  associated  with  FDA 
approval set forth above, as well as additional country-specific regulation. The foreign regulatory approval process 
includes  all  of  the  risks  associated  with  FDA  approval  set  forth  above,  as  well  as  additional  country-specific 
regulation.  Whether  or  not  we  obtain  FDA  approval  for  a  product,  we  must  obtain  approval  of  a  product  by  the 
comparable regulatory authorities of foreign countries before we can commence clinical trials or marketing of the 
product  in  those  countries.  The  time  required  to  obtain  approval  in  other  countries  and  jurisdictions  might  differ 
from and be longer than that required to obtain FDA approval. Regulatory approval in one country or jurisdiction 
does not ensure regulatory approval in another. In addition, a failure or delay in obtaining regulatory approval in one 
country  or  jurisdiction  may  negatively  impact  the  regulatory  process  in  others.  Failure  to  comply  with  applicable 
foreign  regulatory  requirements,  may  be  subject  to,  among  other  things,  fines,  suspension  or  withdrawal  of 
regulatory approvals, product recalls, seizure of products, operating restrictions and criminal prosecution.

Non-clinical studies and clinical trials

Similarly to the United States, the various phases of non-clinical and clinical research in the European Union (“EU”) 
are subject to significant regulatory controls.

24

Non-clinical studies are performed to demonstrate the health or environmental safety of new biological substances. 
Non-clinical studies (pharmaco-toxicological) must be conducted in compliance with the principles of GLP, as set 
forth in EU Directive 2004/10/EC (unless otherwise justified for certain particular medicinal products - e.g., radio-
pharmaceutical precursors for radio-labelling purposes). In particular, non-clinical studies, both in vitro and in vivo, 
must  be  planned,  performed,  monitored,  recorded,  reported  and  archived  in  accordance  with  the  GLP  principles, 
which define a set of rules and criteria for a quality system for the organizational process and the conditions for non-
clinical  studies.  These  GLP  standards  reflect  the  Organization  for  Economic  Co-operation  and  Development 
requirements.

Clinical trials of medicinal products in the EU must be conducted in accordance with EU and national regulations 
and the International Conference on Harmonization (“ICH”) guidelines on GCP as well as the applicable regulatory 
requirements  and  the  ethical  principles  that  have  their  origin  in  the  Declaration  of  Helsinki.  If  the  sponsor  of  the 
clinical  trial  is  not  established  within  the  EU,  it  must  appoint  an  EU  entity  to  act  as  its  legal  representative.  The 
sponsor must take out a clinical trial insurance policy, and in most EU countries, the sponsor is liable to provide ‘no 
fault’ compensation to any study subject injured in the clinical trial.

The  regulatory  landscape  related  to  clinical  trials  in  the  EU  has  been  subject  to  recent  changes.  The  EU  Clinical 
Trials Regulation (“CTR”) which was adopted in April 2014 and repeals the EU Clinical Trials Directive, became 
applicable on January 31, 2022. Unlike directives, the CTR is directly applicable in all EU member states without 
the need for member states to further implement it into national law. The CTR notably harmonizes the assessment 
and  supervision  processes  for  clinical  trials  throughout  the  EU  via  a  Clinical  Trials  Information  System,  which 
contains a centralized EU portal and database.

While  the  Clinical  Trials  Directive  required  a  separate  clinical  trial  application  (“CTA”)  to  be  submitted  in  each 
member  state  in  which  the  clinical  trial  takes  place,  to  both  the  competent  national  health  authority  and  an 
independent ethics committee, much like the FDA and IRB respectively, the CTR introduces a centralized process 
and only requires the submission of a single application for multi-center trials. The CTR allows sponsors to make a 
single submission to both the competent authority and an ethics committee in each member state, leading to a single 
decision  per  member  state.  The  CTA  must  include,  among  other  things,  a  copy  of  the  trial  protocol  and  an 
investigational medicinal product dossier containing information about the manufacture and quality of the medicinal 
product under investigation. The assessment procedure of the CTA has been harmonized as well, including a joint 
assessment by all member states concerned, and a separate assessment by each member state with respect to specific 
requirements related to its own territory, including ethics rules. Each member state’s decision is communicated to 
the sponsor via the centralized EU portal. Once the CTA is approved, clinical study development may proceed. 

The  CTR  foresees  a  three-year  transition  period.  The  extent  to  which  ongoing  and  new  clinical  trials  will  be 
governed  by  the  CTR  varies.  Clinical  trials  for  which  an  application  was  submitted  (i)  prior  to  January  31,  2022 
under the Clinical Trials Directive, or (ii) between January 31, 2022 and January 31, 2023 and for which the sponsor 
has opted for the application of the EU Clinical Trials Directive remain governed by said Directive until January 31, 
2025. After this date, all clinical trials (including those which are ongoing) will become subject to the provisions of 
the CTR.

Medicines  used  in  clinical  trials  must  be  manufactured  in  accordance  with  GMP.  Other  national  and  EU-wide 
regulatory requirements may also apply.

Marketing authorization

In the EU, medicinal products can only be placed on the market after obtaining a marketing authorization (“MA”). 
To obtain regulatory approval of a product candidate under EU regulatory systems, we must submit a MA, or MAA. 
The process for doing this depends, among other things, on the nature of the medicinal product. There are two types 
of MAs:

•

“Centralized  MAs”  are  issued  by  the  European  Commission  through  the  centralized  procedure,  based  on  the 
opinion  of  the  Committee  for  Medicinal  Products  for  Human  Use  (“CHMP”)  of  the  EMA,  and  are  valid 
throughout the entire territory of the EU. The centralized procedure is mandatory for certain types of medicinal 
products, such as (i) medicines derived from biotechnology processes, (ii) advanced therapy medicinal products 
(such as gene therapy, somatic cell therapy and tissue engineered products), (iii) orphan designated medicinal 
products, and (iv) products that contain a new active substance indicated for the treatment of certain diseases 
such  as  HIV/AIDS,  cancer,  neurodegenerative  disorders,  diabetes,  auto-immune  and  viral  diseases.  The 
centralized procedure is optional for products containing a new active substance not yet authorized in the EU, or 
for  products  that  constitute  a  significant  therapeutic,  scientific  or  technical  innovation  or  which  are  in  the 
interest of public health in the EU.

25

•

“National MAs” are issued by the competent authorities of the member states of the EU and only cover their 
respective  territory,  and  are  available  for  products  not  falling  within  the  mandatory  scope  of  the  centralized 
procedure.  Where  a  product  has  already  been  authorized  for  marketing  in  a  member  state  of  the  EU,  this 
national  MA  can  be  recognized  in  another  member  state  through  the  mutual  recognition  procedure.  If  the 
product  has  not  received  a  national  MA  in  any  member  state  at  the  time  of  application,  it  can  be  approved 
simultaneously  in  various  member  states  through  the  decentralized  procedure.  Under  the  decentralized 
procedure an identical dossier is submitted to the competent authorities of each of the member states in which 
the MA is sought, one of which is selected by the applicant as the reference member state.

Under  the  above  described  procedures,  in  order  to  grant  the  MA,  the  EMA  or  the  competent  authorities  of  the 
member  states  of  the  EU  make  an  assessment  of  the  risk-benefit  balance  of  the  product  on  the  basis  of  scientific 
criteria concerning its quality, safety and efficacy. MAs have an initial duration of five years. After these five years, 
the authorization may be renewed on the basis of a reevaluation of the risk-benefit balance. 

Under the centralized procedure the maximum timeframe for the evaluation of a MAA by the EMA is 210 days. In 
exceptional cases, the CHMP might perform an accelerated assessment of a MAA in no more than 150 days (not 
including clock stops). Innovative products that target an unmet medical need and are expected to be of major public 
health  interest  may  be  eligible  for  a  number  of  expedited  development  and  review  programs,  such  as  the  Priority 
Medicines  (“PRIME”)  scheme,  which  provides  incentives  similar  to  the  breakthrough  therapy  designation  in  the 
U.S. In March 2016, the EMA launched an initiative, the PRIME scheme, a voluntary scheme aimed at enhancing 
the  EMA’s  support  for  the  development  of  medicines  that  target  unmet  medical  needs.  It  is  based  on  increased 
interaction  and  early  dialogue  with  companies  developing  promising  medicines,  to  optimize  their  product 
development plans and speed up their evaluation to help them reach patients earlier. Product developers that benefit 
from  PRIME  designation  can  expect  to  be  eligible  for  accelerated  assessment  but  this  is  not  guaranteed.  Many 
benefits accrue to sponsors of product candidates with PRIME designation, including but not limited to, early and 
proactive  regulatory  dialogue  with  the  EMA,  frequent  discussions  on  clinical  trial  designs  and  other  development 
program  elements,  and  accelerated  MAA  assessment  once  a  dossier  has  been  submitted.  Importantly,  a  dedicated 
contact and rapporteur from the CHMP is appointed early in the PRIME scheme facilitating increased understanding 
of  the  product  at  EMA’s  committee  level.  An  initial  meeting  initiates  these  relationships  and  includes  a  team  of 
multidisciplinary experts at the EMA to provide guidance on the overall development and regulatory strategies.

Data and marketing exclusivity

In the EEA, new products authorized for marketing, (i.e., reference products), generally receive eight years of data 
exclusivity  and  an  additional  two  years  of  market  exclusivity  upon  MA.  If  granted,  the  data  exclusivity  period 
prevents  generic  or  biosimilar  applicants  from  relying  on  the  pre-clinical  and  clinical  trial  data  contained  in  the 
dossier of the reference product when applying for a generic or biosimilar MA in the EU during a period of eight 
years from the date on which the reference product was first authorized in the EU. The market exclusivity period 
prevents a successful generic or biosimilar applicant from commercializing its product in the EU until 10 years have 
elapsed  from  the  initial  authorization  of  the  reference  product  in  the  EU.  The  overall  10-year  market  exclusivity 
period  can  be  extended  to  a  maximum  of  eleven  years  if,  during  the  first  eight  years  of  those  10  years,  the  MA 
holder obtains an authorization for one or more new therapeutic indications which, during the scientific evaluation 
prior  to  their  authorization,  are  held  to  bring  a  significant  clinical  benefit  in  comparison  with  existing  therapies. 
However,  there  is  no  guarantee  that  a  product  will  be  considered  by  the  EU’s  regulatory  authorities  to  be  a  new 
active substance, and products may not qualify for data exclusivity.

Pediatric development

In  the  EEA,  MAAs  for  new  medicinal  products  have  to  include  the  results  of  studies  conducted  in  the  pediatric 
population, in compliance with a pediatric investigation plan (“PIP”), agreed with the EMA's Pediatric Committee 
(“PDCO”). The PIP sets out the timing and measures proposed to generate data to support a pediatric indication of 
the drug for which MA is being sought. The PDCO can grant a deferral of the obligation to implement some or all of 
the measures of the PIP until there are sufficient data to demonstrate the efficacy and safety of the product in adults. 
Further, the obligation to provide pediatric clinical trial data can be waived by the PDCO when these data are not 
needed or appropriate because the product is likely to be ineffective or unsafe in children, the disease or condition 
for  which  the  product  is  intended  occurs  only  in  adult  populations,  or  when  the  product  does  not  represent  a 
significant therapeutic benefit over existing treatments for pediatric patients. We have received a waiver for pediatric 
data in COPD.

26

Orphan Medicinal Products

The criteria for designating an “orphan medicinal product” in the EU are similar in principle to those in the United 
States. A medicinal product may be designated as orphan if its sponsor can establish that: (1) the product 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 that 
has been 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.

Orphan drug designation must be requested before submitting an MAA. An EU orphan designation entitles a party 
to incentives such as reduction of fees or fee waivers, protocol assistance, and access to the centralized procedure. 
Upon  grant  of  a  MA,  orphan  medicinal  products  are  entitled  to  ten  years  of  market  exclusivity  for  the  approved 
therapeutic indication which means that the EU regulatory authorities cannot accept another MAA, or grant an MA, 
or accept an application to extend a MA for a similar product for the same indication for a period of ten years. The 
period of market exclusivity is extended by two years for orphan medicinal products that have also complied with an 
agreed PIP. No extension to any supplementary protection certificate can be granted on the basis of pediatric studies 
for  orphan  indications.  Orphan  designation  does  not  convey  any  advantage  in,  or  shorten  the  duration  of,  the 
regulatory review and approval process.

The orphan exclusivity period 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,  or  where  the  prevalence  of  the  condition  has  increased  above  the 
threshold. Additionally, MA may be granted to a similar product for the same indication at any time if (1) the second 
applicant can establish that its product, although similar, is safer, more effective or otherwise clinically superior; (2) 
the applicant consents to a second orphan medicinal product application; or (3) the applicant cannot supply enough 
orphan medicinal product.

Post-Approval Requirements

Similar  to  the  United  States,  both  MA  holders  and  manufacturers  of  medicinal  products  are  subject  to 
comprehensive  regulatory  oversight  by  the  EMA,  the  European  Commission  and/or  the  competent  regulatory 
authorities of the EU member states. The holder of a MA must establish and maintain a pharmacovigilance system 
and  appoint  an  individual  qualified  person  for  pharmacovigilance  (“QPPV”)  who  is  responsible  for  the 
establishment  and  maintenance  of  that  system,  and  oversees  the  safety  profiles  of  medicinal  products  and  any 
emerging  safety  concerns.  Key  obligations  include  expedited  reporting  of  suspected  serious  adverse  reactions  and 
submission of periodic safety update reports (“PSURs”).

All  new  MAA  must  include  a  risk  management  plan  (“RMP”)  describing  the  risk  management  system  that  the 
company will put in place and documenting measures to prevent or minimize the risks associated with the product. 
The regulatory authorities may also impose specific obligations as a condition of the MA. Such risk-minimization 
measures or post-authorization obligations may include additional safety monitoring, more frequent submission of 
PSURs, or the conduct of additional clinical trials or post-authorization safety studies.

The  advertising  and  promotion  of  medicinal  products  is  also  subject  to  laws  concerning  promotion  of  medicinal 
products, interactions with physicians, misleading and comparative advertising and unfair commercial practices. All 
advertising  and  promotional  activities  for  the  product  must  be  consistent  with  the  approved  summary  of  product 
characteristics,  and  therefore  all  off-label  promotion  is  prohibited.  Direct-to-consumer  advertising  of  prescription 
medicines is also prohibited in the EU. Although general requirements for advertising and promotion of medicinal 
products are established under EU directives, the details are governed by regulations in each member state and can 
differ from one country to another.

The aforementioned EU rules are generally applicable in the European Economic Area (“EEA”) which consists of 
the 27 EU member states plus Norway, Liechtenstein and Iceland.

Failure  by  us  or  by  any  of  our  third-party  partners,  including  suppliers,  manufacturers  and  distributors  to  comply 
with  EU  and  EU  member  state  laws  that  apply  to  the  conduct  of  clinical  trials,  manufacturing  approval,  MA  of 
medicinal  products  and  marketing  of  such  products,  both  before  and  after  grant  of  the  MA,  manufacturing  of 
medicinal  products,  statutory  health  insurance,  bribery  and  anti-corruption  or  with  other  applicable  regulatory 
requirements may result in administrative, civil or criminal penalties. These penalties could include delays or refusal 
to  authorize  the  conduct  of  clinical  trials  or  to  grant  MA,  product  withdrawals  and  recalls,  product  seizures, 
suspension,  withdrawal  or  variation  of  the  marketing  authorization,  total  or  partial  suspension  of  production, 

27

distribution,  manufacturing  or  clinical  trials,  operating  restrictions,  injunctions,  suspension  of  licenses,  fines  and 
criminal penalties.

Brexit and the Regulatory Framework in the United Kingdom

Since the end of the Brexit transition period on January 1, 2021, Great Britain (England, Scotland and Wales) has 
not  been  directly  subject  to  EU  laws,  however  under  the  terms  of  the  Ireland/Northern  Ireland  Protocol,  EU  laws 
generally  apply  to  Northern  Ireland.  The  EU  laws  that  have  been  transposed  into  UK  law  through  secondary 
legislation remain applicable in Great Britain. However, under the Retained EU Law (Revocation and Reform) Bill 
2022, which is currently before the UK parliament, any retained EU law not expressly preserved and “assimilated” 
into domestic law or extended by ministerial regulations (to no later than June 23, 2026) will automatically expire 
and be revoked by December 31, 2023. However, new legislation such as the EU CTR is not applicable in Great 
Britain (“GB”).

Under  the  Medicines  and  Medical  Devices  Act  2021,  the  Secretary  of  State  or  an  ‘appropriate  authority’  has 
delegated  powers  to  amend  or  supplement  existing  regulations  in  the  area  of  medicinal  products  and  medical 
devices. This allows new rules to be introduced in the future by way of secondary legislation, which aims to allow 
flexibility  in  addressing  regulatory  gaps  and  future  changes  in  the  fields  of  human  medicines,  clinical  trials  and 
medical devices.

Since January 1, 2021, the Medicines and Healthcare products Regulatory Agency (“MHRA”) has been the UK’s 
standalone medicines and medical devices regulator. As a result of the Northern Ireland protocol, different rules will 
apply  in  Northern  Ireland  than  in  England,  Wales,  and  Scotland,  together,  GB;  broadly,  Northern  Ireland  will 
continue to follow the EU regulatory regime, but its national competent authority will remain the MHRA. 

The UK regulatory framework in relation to clinical trials is derived from existing EU legislation (as implemented 
into UK law, through secondary legislation). On January 17, 2022, the MHRA launched an eight-week consultation 
on reframing the UK legislation for clinical trials. The consultation closed on March 14, 2022 and aims to streamline 
clinical trials approvals, enable innovation, enhance clinical trials transparency, enable greater risk proportionality, 
and  promote  patient  and  public  involvement  in  clinical  trials.  The  outcome  of  the  consultation  is  being  closely 
watched and will determine whether the UK chooses to align with the CTR or diverge from it to maintain regulatory 
flexibility. 

The  MHRA  has  introduced  changes  to  national  licensing  procedures,  including  procedures  to  prioritize  access  to 
new medicines that will benefit patients, including a 150-day assessment and a rolling review procedure. All existing 
EU MAs for centrally authorized products were automatically converted or grandfathered into UK MAs, effective in 
GB (only), free of charge on January 1, 2021, unless the MA holder has opted out. In order to use the centralized 
procedure  to  obtain  a  MA  that  will  be  valid  throughout  the  EEA,  companies  must  be  established  in  the  EEA. 
Therefore since Brexit, without first establishing an EEA entity, companies established in the UK can no longer use 
the EU centralized procedure and instead an EEA entity must hold any centralized MAs . In order to obtain a UK 
MA to commercialize products in the UK, an applicant must be established in the UK and must follow one of the 
UK  national  authorization  procedures  or  one  of  the  remaining  post-Brexit  international  cooperation  procedures  to 
obtain  an  MA  to  commercialize  products  in  the  UK.  The  MHRA  may  rely  on  a  decision  taken  by  the  European 
Commission  on  the  approval  of  a  new  (centralized  procedure)  MA  when  determining  an  application  for  a  GB 
authorization; or use the MHRA’s decentralized or mutual recognition procedures which enable MAs approved in 
EU member states (or Iceland, Liechtenstein, Norway) to be granted in GB.

There  is  no  pre-MA  orphan  designation.  Instead,  the  MHRA  will  review  applications  for  orphan  designation  in 
parallel  to  the  corresponding  MA  application.  The  criteria  are  essentially  the  same,  but  have  been  tailored  for  the 
market, i.e., the prevalence of the condition in GB, rather than the EU, must not be more than five in 10,000. Should 
an orphan designation be granted, the period of market exclusivity will be set from the date of first approval of the 
product in GB.

Other Healthcare Laws 

In addition to FDA restrictions on marketing of pharmaceutical and biological products, other U.S. federal and state 
healthcare  regulatory  laws  restrict  business  practices  in  the  pharmaceutical  industry,  which  include,  but  are  not 
limited to, state and federal anti-kickback, false claims and physician payment and drug pricing transparency laws. 
Similar laws exist in foreign jurisdictions.

The  U.S.  federal  Anti-Kickback  Statute  prohibits,  among  other  things,  any  person  or  entity  from  knowingly  and 
willfully  offering,  paying,  soliciting,  receiving  or  providing  any  remuneration,  directly  or  indirectly,  overtly  or 
covertly,  to  induce  or  in  return  for  purchasing,  leasing,  ordering,  or  arranging  for  or  recommending  the  purchase, 

28

lease, or order of any good, facility, item or service reimbursable, in whole or in part, under Medicare, Medicaid or 
other  federal  healthcare  programs.  The  term  "remuneration"  has  been  broadly  interpreted  to  include  anything  of 
value.  The  Anti-Kickback  Statute  has  been  interpreted  to  apply  to  arrangements  between  pharmaceutical 
manufacturers  on  the  one  hand  and  prescribers,  purchasers,  formulary  managers  and  beneficiaries  on  the  other. 
Although there are a number of statutory exceptions and regulatory safe harbors protecting some common activities 
from prosecution, the exceptions and safe harbors are drawn narrowly. Practices that involve remuneration that may 
be alleged to be intended to induce prescribing, purchases, or recommendations may be subject to scrutiny if they do 
not  meet  the  requirements  of  a  statutory  or  regulatory  exception  or  safe  harbor.  Failure  to  meet  all  of  the 
requirements of a particular applicable statutory exception or regulatory safe harbor does not make the conduct per 
se illegal under the U.S. federal Anti-Kickback Statute. Instead, the legality of the arrangement will be evaluated on 
a case-by-case basis based on a cumulative review of all its facts and circumstances. Several courts have interpreted 
the  statute's  intent  requirement  to  mean  that  if  any  one  purpose  of  an  arrangement  involving  remuneration  is  to 
induce referrals of federal healthcare covered business, the statute has been violated. 

In addition, a person or entity does not need to have actual knowledge of the statute or specific intent to violate it in 
order to have committed a violation. 

The federal false claims laws, including the civil False Claims Act, prohibit any person or entity from, among other 
things,  knowingly  presenting,  or  causing  to  be  presented,  a  false,  fictitious  or  fraudulent  claim  for  payment  to,  or 
approval  by,  the  federal  government,  knowingly  making,  using,  or  causing  to  be  made  or  used  a  false  record  or 
statement  material  to  a  false  or  fraudulent  claim  to  the  federal  government,  or  from  knowingly  making  a  false 
statement to avoid, decrease or conceal an obligation to pay money to the U.S. federal government. A claim includes 
"any  request  or  demand"  for  money  or  property  presented  to  the  U.S.  government.  Actions  under  the  civil  False 
Claims Act may be brought by the Attorney General or as a qui tam action by a private individual in the name of the 
government.  Violations  of  the  civil  False  Claims  Act  can  result  in  very  significant  monetary  penalties  and  treble 
damages. Several pharmaceutical and other healthcare companies have been prosecuted under these laws for, among 
other things, allegedly providing free product to customers with the expectation that the customers would bill federal 
programs for the product. Other companies have been prosecuted for causing false claims to be submitted because of 
the  companies'  marketing  of  products  for  unapproved,  or  off-label,  uses.  Moreover,  a  claim  including  items  or 
services resulting from a violation of the U.S. federal Anti-Kickback Statue constitutes a false or fraudulent claim 
for  the  purposes  of  the  federal  civil  False  Claims  Act.  In  addition,  the  civil  monetary  penalties  statute  imposes 
penalties  against  any  person  who  is  determined  to  have  presented  or  caused  to  be  presented  a  claim  to  a  federal 
health 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.  Many  states  also  have  similar  fraud  and  abuse  statutes  or  regulations  that  apply  to  items  and 
services reimbursed under Medicaid and other state programs, or, in several states, apply regardless of the payor.

The  federal  Health  Insurance  Portability  and  Accountability  Act  of  1996,  or  HIPAA,  created  additional  federal 
criminal statutes that prohibit, among other actions, knowingly and willfully executing, or attempting to execute, a 
scheme  to  defraud  any  healthcare  benefit  program,  including  private  third-party  payors,  knowingly  and  willfully 
embezzling  or  stealing  from  a  healthcare  benefit  program,  willfully  obstructing  a  criminal  investigation  of  a 
healthcare offense and 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.  Similar  to  the  U.S.  federal  Anti-Kickback  Statute,  a  person  or  entity  does  not  need  to 
have actual knowledge of the statute or specific intent to violate it in order to have committed a violation. 

In addition, there has been a recent trend of increased federal and state regulation of payments made to physicians 
and certain other healthcare providers. The Physician Payments Sunshine Act imposes, among other things, annual 
reporting  requirements  for  covered  manufacturers  for  certain  payments  and  "transfers  of  value"  provided  to 
physicians  (defined  to  include  doctors,  dentists,  optometrists,  podiatrists  and  chiropractors),  certain  non-physician 
practitioners  (physician  assistants,  nurse  practitioners,  clinical  nurse  specialists,  certified  nurse  anesthetists, 
anesthesiology assistants and certified nurse-midwives) and teaching hospitals, as well as ownership and investment 
interests  held  by  physicians  and  their  immediate  family  members.  Failure  to  submit  timely,  accurately  and 
completely the required information for all payments, transfers of value and ownership or investment interests may 
result in significant civil monetary penalties and additional penalties for "knowing failures." Covered manufacturers 
must  submit  reports  by  the  90th  day  of  each  subsequent  calendar  year.  In  addition,  certain  states  require 
implementation  of  compliance  programs  and  compliance  with  the  pharmaceutical  industry's  voluntary  compliance 
guidelines  and  the  relevant  compliance  guidance  promulgated  by  the  federal  government,  impose  restrictions  on 
marketing practices and/or tracking and reporting of gifts, compensation and other remuneration or items of value 
provided to physicians and other healthcare professionals and entities. 

29

Violations of any such laws or any other governmental regulations that apply may result in significant criminal, civil 
and administrative penalties, including damages, fines, the possibility of exclusion from federal healthcare programs 
(including Medicare and Medicaid), disgorgement and corporate integrity agreements, which impose, among other 
things,  rigorous  operational  and  monitoring  requirements  on  companies  to  resolve  allegations  of  non-compliance 
with  these  laws.  Similar  sanctions  and  penalties,  as  well  as  imprisonment,  also  can  be  imposed  upon  executive 
officers  and  employees  of  such  companies.  Given  the  significant  size  of  actual  and  potential  settlements,  it  is 
expected  that  the  government  authorities  will  continue  to  devote  substantial  resources  to  investigating  healthcare 
providers'  and  manufacturers'  compliance  with  applicable  fraud  and  abuse  laws.  Moreover,  analogous  state  and 
foreign laws and regulations may be broader in scope than the provisions described above and may apply regardless 
of  payor.  These  laws  and  regulations  may  differ  from  one  another  in  significant  ways,  thus  further  complicating 
compliance  efforts.  For  instance,  in  the  EU,  many  EU  member  states  have  adopted  specific  anti-gift  statutes  that 
further  limit  commercial  practices  for  medicinal  products,  in  particular  vis-à-vis  healthcare  professionals  and 
organizations. Additionally, there has been a recent trend of increased regulation of payments and transfers of value 
provided to healthcare professionals or entities and many EU member states have adopted national “Sunshine Acts” 
which impose reporting and transparency requirements (often on an annual basis), similar to the requirements in the 
United  States,  on  pharmaceutical  companies.  Certain  countries  also  mandate  implementation  of  commercial 
compliance programs, or require disclosure of marketing expenditures and pricing information. Violation of any of 
such  laws  or  any  other  governmental  regulations  that  apply  may  result  in  penalties,  including,  without  limitation, 
significant  administrative,  civil  and  criminal  penalties,  damages,  fines,  disgorgement,  additional  reporting 
obligations and oversight if a manufacturer becomes subject to a corporate integrity agreement or other agreement to 
resolve allegations of non-compliance with these laws, the curtailment or restructuring of operations, exclusion from 
participation in governmental healthcare programs and imprisonment.

Coverage and Reimbursement 

Significant  uncertainty  exists  as  to  the  coverage  and  reimbursement  status  of  any  pharmaceutical  or  biological 
products for which we obtain regulatory approval. In the United States and markets in other countries, patients who 
are  prescribed  treatments  for  their  conditions  and  providers  performing  the  prescribed  services  generally  rely  on 
third-party payors to reimburse all or part of the associated healthcare costs. Patients are unlikely to use our products 
unless coverage is provided and reimbursement is adequate to cover a significant portion of the cost of our products. 
Sales of any products for which we receive regulatory approval for commercial sale will therefore depend, in part, 
on  the  availability  of  coverage  and  adequate  reimbursement  from  third-party  payors.  Third-party  payors  include 
government authorities, managed care plans, private health insurers and other organizations. 

In  the  United  States,  the  process  for  determining  whether  a  third-party  payor  will  provide  coverage  for  a 
pharmaceutical or biological product typically is separate from the process for setting the price of such product or 
for  establishing  the  reimbursement  rate  that  the  payor  will  pay  for  the  product  once  coverage  is  approved.  Third-
party payors may limit coverage to specific products on an approved list, also known as a formulary, which might 
not include all of the FDA-approved products for a particular indication. A decision by a third-party payor not to 
cover our product candidates could reduce physician utilization of our products once approved and have a material 
adverse effect on our sales, results of operations and financial condition. Moreover, a third-party payor's decision to 
provide coverage for a pharmaceutical or biological 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.  Additionally,  coverage  and 
reimbursement for products can differ significantly from payor to payor. One third-party payor's decision to cover a 
particular medical product or service does not ensure that other payors will also provide coverage for the medical 
product  or  service,  or  will  provide  coverage  at  an  adequate  reimbursement  rate.  As  a  result,  the  coverage 
determination process will require us to provide scientific and clinical support for the use of our products to each 
payor separately and will be a time-consuming process. 

In international markets, reimbursement and healthcare payment systems vary significantly by country. In the EU, 
governments influence the price of products through their pricing and reimbursement rules and control of national 
health  care  systems  that  fund  a  large  part  of  the  cost  of  those  products  to  consumers.  Member  states  are  free  to 
restrict  the  range  of  pharmaceutical  products  for  which  their  national  health  insurance  systems  provide 
reimbursement, and to control the prices and reimbursement levels of pharmaceutical products for human use. Some 
jurisdictions  operate  positive  and  negative  list  systems  under  which  products  may  only  be  marketed  once  a 
reimbursement price has been agreed to by the government. Member states may approve a specific price or level of 
reimbursement for the pharmaceutical product, or alternatively adopt a system of direct or indirect controls on the 
profitability  of  the  company  responsible  for  placing  the  pharmaceutical  product  on  the  market,  including  volume-
based arrangements, caps and reference pricing mechanisms. To obtain reimbursement or pricing approval, some of 

30

these  countries  may  require  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.  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.  The  downward  pressure  on  health  care  costs  in  general,  particularly 
prescription products, 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. 

The containment of healthcare costs has become a priority of federal, state and foreign governments, and the prices 
of  pharmaceutical  or  biological  products  have  been  a  focus  in  this  effort.  Third-party  payors  are  increasingly 
challenging the prices charged for medical products and services, examining the medical necessity and reviewing the 
cost-effectiveness  of  pharmaceutical  or  biological  products,  medical  devices  and  medical  services,  in  addition  to 
questioning  safety  and  efficacy.  If  these  third-party  payors  do  not  consider  our  products  to  be  cost-effective 
compared to other available therapies, they may not cover our products after FDA approval or, if they do, the level 
of payment may not be sufficient to allow us to sell our products at a profit. 

Healthcare Reform 

A primary trend in the U.S. healthcare industry and elsewhere is cost containment. Government authorities and other 
third-party  payors  have  attempted  to  control  costs  by  limiting  coverage  and  the  amount  of  reimbursement  for 
particular  medical  products.  For  example,  in  March  2010,  the  Patient  Protection  and  Affordable  Care  Act,  as 
amended  by  the  Health  Care  and  Education  Reconciliation  Act,  or  collectively,  the  ACA,  was  enacted,  which, 
among  other  things,  increased  the  minimum  Medicaid  rebates  owed  by  most  manufacturers  under  the  Medicaid 
Drug Rebate Program; introduced a new methodology by which rebates owed by manufacturers under the Medicaid 
Drug Rebate Program are calculated for drugs that are inhaled, infused, instilled, implanted or injected; extended the 
Medicaid  Drug  Rebate  Program  to  utilization  of  prescriptions  of  individuals  enrolled  in  Medicaid  managed  care 
plans;  imposed  mandatory  discounts  for  certain  Medicare  Part  D  beneficiaries  as  a  condition  for  manufacturers' 
outpatient drugs coverage under Medicare Part D.

Since its enactment, there have been judicial, executive and Congressional challenges to certain aspects of the ACA. 
On  June  17,  2021,  the  U.S.  Supreme  Court  dismissed  the  most  recent  judicial  challenge  to  the  ACA  brought  by 
several states without specifically ruling on the constitutionality of the ACA. Prior to the Supreme Court’s decision, 
President  Biden  issued  an  executive  order  initiating  a  special  enrollment  period  from  February  15,  2021  through 
August 15, 2021 for purposes of obtaining health insurance coverage through the ACA marketplace. The executive 
order  also  instructed  certain  governmental  agencies  to  review  and  reconsider  their  existing  policies  and  rules  that 
limit access to healthcare.

Additionally,  on  August  2,  2011,  the  Budget  Control  Act  of  2011  created  measures  for  spending  reductions  was 
enacted, which, among other things, included aggregate reductions of Medicare payments to providers, which went 
into effect on April 1, 2013 and, due to subsequent legislative amendments to the statute, will stay in effect through 
2032, with the exception of a temporary suspension from May 1, 2020 through March 31, 2022, unless additional 
action is taken by Congress. On January 2, 2013, the American Taxpayer Relief Act of 2012 was signed into law, 
which,  among  other  things,  further  reduced  Medicare  payments  to  several  types  of  providers,  including  hospitals, 
imaging centers and cancer treatment centers, and increased the statute of limitations period for the government to 
recover overpayments to providers from three to five years. In addition, in March 2021, the American Rescue Plan 
Act of 2021 was signed into law, which eliminates the statutory Medicaid drug rebate cap, currently set at 100% of a 
drug’s average manufacturer price, beginning January 1, 2024.

More recently, there has been heightened governmental scrutiny recently over the manner in which manufacturers 
set prices for their marketed products, which have resulted in several recent Congressional inquiries and proposed 
and  enacted  legislation  designed  to,  among  other  things,  bring  more  transparency  to  product  pricing,  review  the 
relationship  between  pricing  and  manufacturer  patient  programs,  and  reform  government  program  reimbursement 
methodologies for pharmaceutical products. On August 16, 2022, the Inflation Reduction Act of 2022, or IRA, was 
signed into law. Among other things, the IRA requires manufacturers of certain drugs to engage in price negotiations 
with Medicare (beginning in 2026), imposes rebates under Medicare Part B and Medicare Part D to penalize price 
increases that outpace inflation (first due in 2023), and replaces the Part D coverage gap discount program with a 
new  discounting  program  (beginning  in  2025).  The  IRA  permits  the  Secretary  of  the  Department  of  Health  and 
Human Services (HHS) to implement many of these provisions through guidance, as opposed to regulation, for the 
initial years. For that and other reasons, it is currently unclear how the IRA will be effectuated.

31

We expect that additional state, federal and foreign healthcare reform measures will be adopted in the future, any of 
which  could  limit  the  amounts  that  federal  and  state  governments  will  pay  for  healthcare  products  and  services, 
which could result in reduced demand for our products, once approved, or additional price increases. In particular, 
we anticipate that Medicare Part B will play an important role in the reimbursement of ensifentrine. Changes in how 
products are reimbursed through Medicare Part B may affect the overall coverage for ensifentrine, if approved. Any 
reduction in reimbursement from Medicare or other government-funded programs may result in a similar reduction 
in payments from private payors.

Data Privacy and Security Laws

Numerous  state,  federal  and  foreign  laws,  regulations  and  standards  govern  the  collection,  use,  access  to, 
confidentiality and security of health-related and other personal information, and could apply now or in the future to 
our  operations  or  the  operations  of  our  partners.  In  the  United  States,  numerous  federal  and  state  laws  and 
regulations,  including  data  breach  notification  laws,  health  information  privacy  and  security  laws  and  consumer 
protection  laws  and  regulations  govern  the  collection,  use,  disclosure,  and  protection  of  health-related  and  other 
personal information. In addition, certain foreign laws govern the privacy and security of personal data, including 
health-related data. For example, the General Data Protection Regulation (“GDPR”) imposes strict requirements for 
processing the personal data of individuals within the European Economic Area. Companies that must comply with 
the  GDPR  face  increased  compliance  obligations  and  risk,  including  more  robust  regulatory  enforcement  of  data 
protection  requirements  and  potential  fines  for  noncompliance  of  up  to  €20  million  or  4%  of  the  annual  global 
revenues of the noncompliant company, whichever is greater. Further, from January 1, 2021, companies have had to 
comply with the GDPR and also the United Kingdom GDPR (“UK GDPR”), which, together with the amended UK 
Data Protection Act 2018, retains the GDPR in UK national law. The UK GDPR mirrors the fines under the GDPR, 
i.e.,  fines  up  to  the  greater  of  €20  million  (£17.5  million)  or  4%  of  global  turnover.  Privacy  and  security  laws, 
regulations,  and  other  obligations  are  constantly  evolving,  may  conflict  with  each  other  to  complicate  compliance 
efforts, and can result in investigations, proceedings, or actions that lead to significant civil and/or criminal penalties 
and restrictions on data processing.

Additional regulation

In  addition  to  the  foregoing,  state  and  federal  laws  regarding  environmental  protection  and  hazardous  substances, 
including  the  Occupational  Safety  and  Health  Act,  the  Resource  Conservation  and  Recovery  Act  and  the  Toxic 
Substances Control Act, affect our business. These and other laws govern the use, handling and disposal of various 
biologic, chemical and radioactive substances used in, and wastes generated by, 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.  Equivalent  laws  have  been  adopted  in  certain  other  countries  that  impose  similar 
obligations.

U.S. Foreign Corrupt Practices Act

The  U.S.  Foreign  Corrupt  Practices  Act  ("FCPA"),  prohibits  U.S.  corporations  and  individuals  from  engaging  in 
certain  activities  to  obtain  or  retain  business  abroad  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.  The  scope  of  the  FCPA  includes  interactions  with 
certain healthcare professionals in many countries. Equivalent laws have been adopted in other foreign countries that 
impose similar obligations.

EMPLOYEES

As  of  December  31,  2022,  we  had  35  full-time  and  1  part  time  employees.  None  of  our  employees  is  party  to  a 
collective bargaining agreement or represented by a trade union or labor union. We consider our relationship with 
our employees to be good.

ADDITIONAL INFORMATION

We were incorporated in February 2005 as Isis Resources plc under the laws of England and Wales. In September 
2006,  we  acquired  Rhinopharma  Limited,  a  private  company  incorporated  in  Canada,  and  changed  our  name  to 
Verona  Pharma  plc.  Our  principal  office  is  located  at  3  More  London  Riverside,  London,  SE1  2RE,  United 
Kingdom. 

32

We  make  available  our  public  filings,  including  annual  reports  on  Form  10-K,  quarterly  reports  on  Form  10-Q, 
current reports on Form 8-K, and any amendments to those reports, with the SEC free of charge through our website 
at www.veronapharma.com in the “Investors” section as soon as reasonably practicable after we electronically file 
such material with, or furnish such material to, the SEC. The information contained in, or accessible through, our 
website does not constitute a part of this Annual Report.

33

Item 1A. 

Risk Factors

Investing in our ADSs involves a high degree of risk. You should carefully consider the risks described below, as 
well as the other information in this Annual Report, including our consolidated financial statements and the related 
notes  and  “Management’s  Discussion  and  Analysis  of  Financial  Condition  and  Results  of  Operations”.  The 
occurrence  of  any  of  the  events  or  developments  described  below  could  adversely  affect  our  business,  financial 
condition, results of operations and growth prospects. In such an event, the market price of our ADSs could decline, 
and you may lose all or part of your investment. Additional risks and uncertainties not presently known to us or that 
we currently deem immaterial also may impair our business operations.

Risks Related to Our Business and Industry

We have a limited operating history and have never generated any product revenue.

We are a clinical-stage biopharmaceutical company with a limited operating history, and have incurred significant 
operating  losses  since  our  inception.  We  had  net  losses  of  $68.7  million  and  $55.6  million  for  the  years  ended 
December  31,  2022  and  2021,  respectively.  As  of  December  31,  2022,  we  had  an  accumulated  deficit  of  $333.1 
million.  Our  losses  have  resulted  principally  from  expenses  incurred  in  research  and  development  of  ensifentrine, 
our  only  product  candidate,  and  from  general  and  administrative  costs  that  we  have  incurred  while  building  our 
business infrastructure. We expect to continue to incur significant operating losses for the foreseeable future as we 
expand our research and development efforts, advance our clinical development of ensifentrine, and seek to obtain 
regulatory approval for and commercialize ensifentrine. We anticipate that our expenses will increase substantially 
as we:

•

•

•

•

•

•

•

•

initiate  and  conduct  clinical  trials  of  ensifentrine  for  the  treatment  of  cystic  fibrosis  (“CF”),  asthma  or  other 
indications;

initiate  and  conduct  other  future  clinical  trials  of  ensifentrine  in  other  formulations,  including  in  combination 
with other active ingredients, for the treatment of COPD or other indications;

initiate and conduct clinical pharmacology studies with any formulation;

seek to discover and develop or in-license additional respiratory product candidates;

conduct pre-clinical studies to support ensifentrine and potentially other future product candidates;

develop  the  manufacturing  processes  and  produce  clinical  and  commercial  supplies  of  the  ensifentrine  active 
pharmaceutical ingredient and formulated drug products derived from it;

seek regulatory approvals of ensifentrine;

grow  commercial  infrastructure  to  support  the  potential  commercialization  of  ensifentrine,  including  sales, 
marketing, operations, reimbursement and distribution infrastructure and scale-up manufacturing capabilities to 
commercialize ensifentrine, if approved;

• maintain, expand and protect our intellectual property portfolio;

•

•

•

secure, maintain or obtain freedom to operate for our in-licensed technologies and products;

add  clinical,  scientific,  operational,  financial  and  management  information  systems  and  personnel,  including 
personnel to support our product development and potential future commercialization efforts; and

expand our operations in the United States, the United Kingdom (“UK”) and possibly elsewhere.

Our expenses may also increase substantially if we experience any delays or encounter any issues with any of the 
above,  including,  but  not  limited  to,  failed  pre-clinical  studies  or  clinical  trials,  complex  results,  safety  issues  or 
regulatory challenges.

We have devoted substantially all of our financial resources and efforts to the research and development and pre-
clinical studies and clinical trials of ensifentrine. We are continuing development of ensifentrine, and we have not 
completed development of any product candidate or any drugs.

To  become  and  remain  profitable,  we  must  succeed  in  developing,  and  eventually  commercializing,  products  that 
generate  significant  revenue.  This  will  require  us  to  be  successful  in  a  range  of  challenging  activities,  including 
completing  clinical  trials  of  ensifentrine,  discovering  and  developing  additional  product  candidates,  obtaining 
regulatory  approval  for  ensifentrine  and  any  future  product  candidates  that  successfully  complete  clinical  trials, 

34

establishing  manufacturing,  commercial  and  marketing  capabilities  and  ultimately  distributing  and  selling  any 
products  for  which  we  may  obtain  regulatory  approval.  We  are  only  in  the  preliminary  stages  of  many  of  these 
activities.  We  may  never  succeed  in  these  activities  and,  even  if  we  do,  we  may  never  generate  revenue  that  is 
significant enough to achieve profitability.

Because of the numerous risks and uncertainties associated with pharmaceutical product development, we are unable 
to  accurately  predict  the  timing  or  amount  of  increased  expenses  or  when,  or  if,  we  will  be  able  to  achieve 
profitability.  If  we  are  required  by  the  FDA,  the  European  Medicines  Agency  (“EMA”),  or  other  regulatory 
authorities to perform studies in addition to those we currently anticipate, or if there are any delays in completing 
our clinical trials or the development of ensifentrine or any other product candidates, our expenses could increase 
and revenue could be further delayed.

Even  if  we  do  generate  product  royalties  or  product  sales,  we  may  never  achieve  or  sustain  profitability  on  a 
quarterly or annual basis. Our failure to sustain profitability would depress the market price of our ADSs and could 
impair our ability to raise capital, expand our business, diversify our product offerings or continue our operations. A 
decline in the market price of our ADSs also could cause our ADS holders to lose all or a part of their investment.

We  will  need  additional  funding  to  complete  development  and  commercialization  of  any  future  product 
candidates, or development and commercialization of other formulations or target indications of ensifentrine, if 
approved.  If  we  are  unable  to  raise  capital  when  needed,  we  could  be  forced  to  delay,  reduce  or  eliminate  our 
product development programs or commercialization efforts.

We  expect  our  expenses  to  increase  in  connection  with  our  ongoing  and  planned  activities,  particularly  as  we 
conduct  clinical  trials  of  ensifentrine,  and  develop  ensifentrine  in  other  formulations  or  for  other  indications.  In 
addition,  if  we  obtain  regulatory  approval  for  ensifentrine  or  any  other  product  candidates,  we  expect  to  incur 
significant  commercialization  expenses  related  to  activities  including  product  positioning  studies,  product 
manufacturing,  medical  affairs,  marketing,  sales  and  distribution.  Furthermore,  we  expect  to  incur  ongoing  costs 
associated with operating as a public company in the United States and maintaining a listing on the Nasdaq Global 
Market,  or  Nasdaq.  Accordingly,  we  will  need  to  obtain  substantial  additional  funding  in  connection  with  our 
continuing operations. If we are unable to raise capital when needed or on attractive terms, we could be forced to 
delay, reduce or eliminate our research and development programs or any future commercialization efforts.

If we obtain regulatory approval for ensifentrine for the treatment of COPD in the US, we estimate that our existing 
cash resources, expected cash receipts from the UK tax credit program and funding expected to become available 
under  the  $150.0  million  debt  facility  will  enable  the  Company  to  fund  planned  operating  expenses  and  capital 
expenditure requirements through at least the end of 2025 including the commercial launch of ensifentrine. Future 
advances  under  the  Oxford  Term  Loan  are  contingent  upon  achievement  of  certain  clinical  and  regulatory 
milestones  and  other  specified  conditions.  We  have  based  this  estimate  on  assumptions  that  may  prove  to  be 
incorrect,  and  we  could  use  our  available  capital  resources  sooner  than  we  currently  expect.  In  addition,  our 
operating plan may change as a result of many factors unknown to us. These factors, among others, may necessitate 
that  we  seek  additional  capital  sooner  than  currently  planned.  In  addition,  we  may  seek  additional  capital  due  to 
favorable market conditions or strategic considerations, even if we believe we have sufficient funds for our current 
or future operating plans.

Our future capital requirements will depend on many factors, including:

•

•

•

•

•

•

the costs, progress and results of our ongoing Phase 3 clinical trials for the maintenance treatment of COPD;

the  costs,  timing  and  outcome  of  the  regulatory  submission  and  review  of  ensifentrine,  including  any  post-
marketing studies that could be required by regulatory authorities, if regulatory approval is received;

the cost, progress and results of any other studies required to support the commercial positioning of ensifentrine 
for the treatment of COPD, if regulatory approval is received;

the cost, progress and results of any clinical trials for the treatment of CF, asthma or other indications, or for 
other formulations of ensifentrine including fixed-dose combination products;

the  cost  of  manufacturing  clinical  and,  if  approved,  commercial  supplies  of  the  ensifentrine  active  ingredient 
and derived formulated drug products;

the  scope,  progress,  results  and  costs  of  pre-clinical  development,  laboratory  testing  and  clinical  trials  for 
ensifentrine  in  other  indications  and  of  the  development  of  DPI  and  pMDI  formulations  of  ensifentrine,  or 
fixed-dose  combination  formulations  of  ensifentrine  for  the  maintenance  treatment  of  COPD  and  potentially 
asthma and other respiratory diseases;

35

•

•

•

•

•

•

the  costs,  timing  and  outcome  of  potential  future  commercialization  activities,  including  manufacturing, 
marketing, sales and distribution, for ensifentrine;

the  costs  and  timing  of  preparing,  filing  and  prosecuting  patent  applications,  maintaining  and  enforcing  our 
intellectual property rights and defending any intellectual property-related claims, including any claims by third 
parties that we are infringing upon their intellectual property rights;

the timing and amount of revenue, if any, received from commercial sales of ensifentrine;

the sales price and availability of adequate third-party coverage and reimbursement for ensifentrine;

the effect of competing technological and market developments; and

the  extent  to  which  we  acquire  or  invest  in  businesses,  products  and  technologies,  including  entering  into 
licensing  or  collaboration  arrangements  for  ensifentrine,  although  we  currently  have  no  commitments  or 
agreements to complete any such transactions.

Any  additional  fundraising  efforts  may  divert  our  management  from  their  day-to-day  activities,  which  may 
adversely affect our ability to develop and commercialize ensifentrine. In addition, we cannot guarantee that future 
financing will be available in sufficient amounts or on terms acceptable to us, if at all. Moreover, the terms of any 
financing  may  adversely  affect  our  business,  the  holdings  or  the  rights  of  our  shareholders,  or  the  value  of  our 
ordinary shares or ADSs.

If we are unable to obtain funding on a timely basis, we may be required to significantly curtail, delay or discontinue 
our  research  and  development  programs  relating  to  ensifentrine  or  any  commercialization  efforts,  be  unable  to 
expand our operations, or be unable to otherwise capitalize on our business opportunities, as desired, which could 
harm our business and potentially cause us to discontinue operations.

We depend solely on the success of ensifentrine, our only product candidate under development. We cannot give 
any assurance that ensifentrine will receive regulatory approval for any indication, which is necessary before it 
can be commercialized. If we, and any collaborators with whom we have entered or may enter into agreements 
for  the  development  and  commercialization  of  ensifentrine,  are  unable  to  commercialize  ensifentrine,  or 
experience  significant  delays  in  doing  so,  our  ability  to  generate  revenue  and  our  financial  condition  will  be 
adversely affected.

We  do  not  currently  generate  any  revenues  from  sales  of  any  products,  and  we  may  never  be  able  to  develop  or 
commercialize a marketable product. We have invested substantially all of our efforts and financial resources in the 
development  of  ensifentrine,  and  we  do  not  have  any  other  product  candidate  currently  under  development.  Our 
ability to generate royalty and product revenues, which we do not expect will occur for at least the next few years, if 
ever,  will  depend  heavily  on  the  successful  development  and  eventual  commercialization  of  ensifentrine,  if 
approved,  which  may  never  occur.  Ensifentrine  will  require  regulatory  approval,  procurement  of  manufacturing 
supply,  commercialization,  substantial  additional  investment  and  significant  marketing  efforts  before  we  generate 
any revenues from product sales. We are not permitted to market or promote ensifentrine or any product candidates 
in the United States, Europe or other countries before we receive regulatory approval from the FDA, the European 
Commission or comparable foreign regulatory authorities, and we may never receive such regulatory approval for 
ensifentrine or any future product candidate. We have not submitted an NDA to the FDA, a marketing authorization 
application  (“MAA”)  to  the  EMA  or  comparable  applications  to  other  regulatory  authorities.  The  success  of 
ensifentrine will depend on many factors, including the following:

•

•

•

•

•

we  may  not  be  able  to  demonstrate  that  ensifentrine  is  safe  and  effective  as  a  treatment  for  our  targeted 
indications to the satisfaction of the applicable regulatory authorities;

the applicable regulatory authorities may require additional pre-clinical or clinical trials, which would increase 
our costs and prolong our development;

the results of clinical trials of ensifentrine may not meet the level of statistical or clinical significance required 
by the applicable regulatory authorities for marketing approval;

the applicable regulatory authorities may disagree with the number, design, size, conduct or implementation of 
our clinical trials;

the contract research organizations (“CROs”) that we retain to conduct clinical trials may take actions outside of 
our control that materially adversely impact our clinical trials;

36

•

•

•

•

•

•

•

•

•

•

•

•

•

•

the applicable regulatory authorities may not find the data from pre-clinical studies and clinical trials sufficient 
to demonstrate that the clinical and other benefits of ensifentrine outweigh its safety risks or may disagree with 
our interpretation of data;

our ability to demonstrate a non-clinical safety profile that is acceptable to the applicable regulatory authorities;

unexpected operational or clinical issues may prevent completion or interpretation of clinical study results;

unexpected  manufacturing  issues,  product  performance  issues  or  stability  issues  may  delay  or  otherwise 
adversely affect the progress of our clinical development program;

if FDA or other regulatory authorities determine that inspections of the manufacturing facilities or clinical sites 
for  our  product  candidates  are  required  in  connection  with  a  marketing  application,  and  such  regulatory 
authorities  are  unable  to  conduct  such  inspections,  whether  due  to  geopolitical  conflict,  such  as  the  ongoing 
Russia-Ukraine conflict, or travel restrictions, such as those imposed during the COVID-19 pandemic;

the  applicable  regulatory  authorities  may  not  accept  data  generated  at  our  clinical  trial  sites  due  to  GCP 
compliance issues, misconduct, or other reasons;

if we submit an NDA to the FDA, and it is reviewed by an advisory committee, the FDA may have difficulties 
scheduling  an  advisory  committee  meeting  in  a  timely  manner  or  the  advisory  committee  may  recommend 
against  approval  of  our  application  or  may  recommend  that  the  FDA  require,  as  a  condition  of  approval, 
additional  pre-clinical  studies  or  clinical  trials,  limitations  on  approved  labeling  or  distribution  and  use 
restrictions;

the  applicable  regulatory  authorities  may  require  development  of  a  risk  evaluation  and  mitigation  strategy,  or 
REMS, or similar risk management measures as a condition of approval;

the applicable regulatory authorities may identify deficiencies in the manufacturing processes or facilities of our 
third-party manufacturers;

the applicable regulatory authorities may change their approval policies or adopt new regulations;

if  we  license  ensifentrine  to  others,  the  efforts  of  those  parties  in  completing  clinical  trials  of,  receiving 
regulatory approval for, and commercializing ensifentrine;

through our clinical trials, we may discover factors that limit the commercial viability of ensifentrine or make 
the commercialization of ensifentrine unfeasible;

if we retain rights under a collaboration agreement for ensifentrine, our efforts in completing pre-clinical studies 
and clinical trials of, receiving marketing approvals for, establishing commercial manufacturing capabilities for, 
and commercializing ensifentrine; and

if approved, acceptance of ensifentrine by patients, the medical community and third-party payors, effectively 
competing  with  other  therapies,  a  continued  acceptable  safety  profile  following  approval  and  qualifying  for, 
maintaining, enforcing and defending our intellectual property rights and claims.

An unfavorable outcome in any of these factors could result in our experiencing significant delays or an inability to 
successfully commercialize ensifentrine. 

We cannot be certain that ensifentrine or any future product candidates will be successful in clinical trials or receive 
regulatory approval. Further, ensifentrine or any future product candidates may not receive regulatory approval even 
if  they  are  successful  in  clinical  trials.  If  we  do  not  receive  regulatory  approvals  for  ensifentrine  or  any  future 
product  candidates,  we  may  not  be  able  to  continue  our  operations.  Even  if  we  successfully  obtain  regulatory 
approvals to manufacture and market ensifentrine or any future product candidates, our revenues will be dependent, 
in part, upon the size of the markets in the territories for which we gain regulatory approval and have commercial 
rights.  If  the  markets  for  patient  subsets  that  we  are  targeting  are  not  as  significant  as  we  estimate,  we  may  not 
generate significant revenues from sales of such products, if approved.

We  plan  to  seek  regulatory  approval  to  commercialize  ensifentrine  in  the  United  States,  and  potentially  in  the 
European Union (“EU”) and additional foreign countries. While the scope of regulatory approval is similar in many 
countries, to obtain separate regulatory approval in multiple countries requires us to comply with the numerous and 
varying regulatory requirements of such countries regarding safety and efficacy and governing, among other things, 
clinical trials and commercial sales, pricing and distribution of ensifentrine, and we cannot predict success in these 
jurisdictions.

37

The  COVID-19  pandemic  has  and  may  continue  to  adversely  impact  our  business,  including  our  plans  to 
the  development  and 
commercialize  ensifentrine 
commercialization of ensifentrine in other countries.

if  approved,  and  plans  for 

the  United  States, 

in 

The  COVID-19  pandemic  continues  to  rapidly  evolve,  including  in  countries  where  we  have  operations,  have 
conducted  our  ENHANCE  clinical  trial  program  and  are  planning  to  develop  and  commercialize  ensifentrine,  if 
approved.  For  example,  the  COVID-19  pandemic  continues  to  impact  Greater  China  where  we  have  granted  a 
license  to  a  third  party  for  the  development  and  commercialization  of  products  containing  ensifentrine.  The 
pandemic  and  government  measures  taken  in  response  have  had  and  continue  to  have  a  significant  impact,  both 
direct and indirect, on businesses and commerce, as worker shortages continue to occur; supply chains continue to 
be  disrupted;  and  demand  for  and  costs  of  certain  goods  and  services,  such  as  medical  services  and  supplies,  has 
spiked. If the COVID-19 pandemic continues for a significant length of time, or if new government measures are 
introduced, we may experience additional disruptions that could severely impact our business, including in particular 
the approval of and commercialization of ensifentrine. The extent to which the pandemic impacts our business will 
depend on future developments, which are highly uncertain and cannot be predicted with confidence.

Our limited operating history may make it difficult for investors to evaluate the success of our business to date 
and to assess our future viability.

Since our inception in 2005, we have devoted substantially all of our resources to developing ensifentrine, building 
our intellectual property portfolio, developing our supply chain, planning our business, raising capital and providing 
general and administrative support for these operations. We have completed multiple Phase 1 and 2 clinical trials for 
ensifentrine, and we have two registrational Phase 3 clinical trials nearing completion. We have not yet successfully 
obtained regulatory approvals, manufactured a commercial-scale product or arranged for a third party to do so on 
our  behalf  or  conducted  sales  and  marketing  activities  necessary  for  successful  product  commercialization. 
Additionally,  we  are  not  profitable  and  have  incurred  losses  in  each  year  since  our  inception,  and  we  expect  our 
financial  condition  and  operating  results  to  continue  to  fluctuate  significantly  from  quarter  to  quarter  and  year  to 
year  due  to  a  variety  of  factors,  many  of  which  are  beyond  our  control.  Consequently,  any  predictions  investors 
make  about  our  future  success  or  viability  may  not  be  as  accurate  as  they  could  be  if  we  had  a  longer  operating 
history.

The terms of our credit facility place restrictions on our operating and financial flexibility, and our existing and 
any  future  indebtedness  could  adversely  affect  our  ability  to  operate  our  business,  and  our  existing  and  any 
future  indebtedness  could  adversely  affect  our  ability  to  operate  our  business,  and  our  existing  and  any  future 
indebtedness could adversely affect our ability to operate our business. 

In  October  2022,  we  and  Verona  Pharma,  Inc.  (“Verona  U.S.”)  entered  into  a  loan  and  security  agreement  (the 
“Loan Agreement”), with Oxford Finance Luxembourg S.À R.L. (“Oxford”), pursuant to which a term loan facility 
in an aggregate amount of up to $150.0 million (the “Term Loan”) is available to us in five tranches. We received 
the  first  tranche  of  $10.0  million  (the  “Term  A  Loan”)  at  closing.  Each  advance  under  the  Term  Loan  accrues 
interest at a floating per annum rate equal to (a) the greater of (i) the 1-Month CME Term SOFR reference rate on 
the  last  business  day  of  the  month  that  immediately  precedes  the  month  in  which  the  interest  will  accrue  and  (ii) 
2.38%, plus (b) 5.50% (the “Basic Rate”); provided, however, that in no event shall the Basic Rate (x) for the Term 
A  Loan  be  less  than  7.88%  and  (y)  for  each  other  advance  be  less  than  the  Basic  Rate  on  the  business  day 
immediately prior to the funding date of such advance.

Our  outstanding  indebtedness,  including  any  additional  indebtedness  beyond  our  borrowings  from  Oxford, 
combined  with  our  other  financial  obligations  and  contractual  commitments  could  have  significant  adverse 
consequences, including:

•
requiring us to dedicate a portion of our cash resources to the payment of interest and principal, reducing 
money  available  to  fund  working  capital,  capital  expenditures,  product  candidate  development  and  other  general 
corporate purposes;

•

increasing our vulnerability to adverse changes in general economic, industry and market conditions;

•
further debt or equity financing;

subjecting us to restrictive covenants that may reduce our ability to take certain corporate actions or obtain 

•
compete; and

limiting our flexibility in planning for, or reacting to, changes in our business and the industry in which we 

•
servicing options.

placing  us  at  a  competitive  disadvantage  compared  to  our  competitors  that  have  less  debt  or  better  debt 

38

We intend to satisfy our current and future debt service obligations with our then existing cash and cash equivalents. 
However,  we  may  not  have  sufficient  funds,  and  may  be  unable  to  arrange  for  additional  financing,  to  pay  the 
amounts due under the Loan Agreement or any other debt instruments. Failure to make payments or comply with 
other covenants under the Loan Agreement or such other debt instruments could result in an event of default and 
acceleration  of  amounts  due.  For  example,  the  affirmative  covenants  under  our  Loan  Agreement  include,  among 
others, covenants requiring us (and us to cause our subsidiaries) to maintain our legal existence and governmental 
approvals,  deliver  certain  financial  reports  and  notifications,  maintain  proper  books  of  record  and  account,  timely 
file and pay tax returns, and maintain inventory and insurance coverage. Under the Loan Agreement, the occurrence 
of a material adverse change in our business, operations, or condition is an event of default. If an event of default 
occurs and Oxford accelerates the amounts due, we may not be able to make accelerated payments and Oxford could 
seek to enforce security interests in the collateral securing such indebtedness, which could potentially require us to 
renegotiate  our  agreement  on  terms  less  favorable  to  us  or  to  immediately  cease  operations.  Further,  if  we  are 
liquidated,  the  lenders’  right  to  repayment  would  be  senior  to  the  rights  of  holders  of  our  American  Depositary 
Shares (“ADS”) or of our shareholders to receive any proceeds from the liquidation. Any declaration by Oxford of 
an event of default could significantly harm our business and prospects and could cause the price of our ADSs to 
decline. In addition, the covenants under the Loan Agreement, the pledge of our assets as collateral and the negative 
pledge with respect to our intellectual property could limit our ability to obtain additional debt financing. If we raise 
any  additional  debt  financing,  the  terms  of  such  additional  debt  could  further  restrict  our  operating  and  financial 
flexibility.

Raising additional capital may cause dilution to our holders, restrict our operations or require us to relinquish 
rights to our technologies or product candidates.

Until  such  time,  if  ever,  as  we  can  generate  substantial  product  revenues,  we  expect  to  finance  our  cash  needs 
through  a  combination  of  securities  offerings,  debt  financings,  license  and  collaboration  agreements  and  research 
grants. If we raise capital through securities offerings, the ownership interest of our ADS holders and shareholders 
will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect 
these holders’ rights as holders of our ADSs. Debt financing, if available, could result in fixed payment obligations, 
and we may be required to agree to certain restrictive covenants, such as limitations on our ability to incur additional 
debt, to acquire, sell or license intellectual property rights, to make capital expenditures, or to declare dividends, or 
other operating restrictions. If we raise additional funds through collaboration or licensing agreements, 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. In addition, we could also be required to seek funds through arrangements 
with collaborators or others at an earlier stage than otherwise would be desirable. If we raise funds through research 
grants, we may be subject to certain requirements, which may limit our ability to use the funds or require us to share 
information  from  our  research  and  development.  Raising  additional  capital  through  any  of  these  or  other  means 
could adversely affect our business and the holdings or rights of our ADS holders and shareholders, and may cause 
the market price of our ADSs to decline.

Our business may become subject to economic, political, regulatory and other risks associated with international 
operations.

As a company based in the United Kingdom and listed on Nasdaq, our business is subject to risks associated with 
conducting  business  internationally.  Many  of  our  suppliers  and  collaborative  and  clinical  trial  relationships  are 
located  outside  the  United  Kingdom  and  the  United  States.  Accordingly,  our  future  results  could  be  harmed  by  a 
variety of factors, including:

•

•

•

•

•

•

•

economic weakness, including inflation, or political instability in particular non-U.S. economies and markets;

differing regulatory requirements for drug approvals in non-U.S. countries;

differing jurisdictions could present different issues for securing, maintaining or obtaining freedom to operate in 
such jurisdictions;

potentially reduced protection for intellectual property rights;

difficulties in compliance with non-U.S. laws and regulations;

changes in non-U.S. regulations and customs, tariffs and trade barriers;

changes in non-U.S. currency exchange rates of the euro and currency controls;

39

•

•

•

•

•

•

•

•

•

changes in a specific country’s or region’s political or economic environment;

trade protection measures, import or export licensing requirements or other restrictive actions by U.S. or non-
U.S. governments;

differing reimbursement regimes and price controls in certain non-U.S. markets;

negative consequences from changes in tax laws;

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

workforce uncertainty in countries where labor unrest is more common than in the United States;

difficulties associated with staffing and managing international operations, including differing labor relations;

production  shortages  resulting  from  any  events  affecting  raw  material  supply  or  manufacturing  capabilities 
abroad; and

business  interruptions  resulting  from  geopolitical  actions,  including  war  and  terrorism,  such  as  the  ongoing 
conflict between Russia and Ukraine, or natural disasters including earthquakes, typhoons, floods and fires, or 
public health emergencies, such as the COVID-19 pandemic.

Exchange rate fluctuations may materially affect our results of operations and financial condition.

Although we are based in the United Kingdom, our financial statements are denominated in U.S dollars and many of 
our business activities are carried out with partners outside the U.S. and United Kingdom and these transactions may 
be  denominated  in  another  currency.  As  a  result,  our  business  and  the  price  of  our  ADSs  may  be  affected  by 
fluctuations  in  foreign  exchange  rates  not  only  between  the  pound  sterling  and  the  U.S.  dollar,  but  also  the 
currencies of other countries, which may have a significant impact on our results of operations and cash flows from 
period to period. Currently, we do not have any exchange rate hedging arrangements in place.

Risks Related to Development, Clinical Testing and Regulatory Approval

Clinical drug development involves a lengthy and expensive process, with an uncertain outcome. We may incur 
additional  costs  or  experience  delays  in  completing,  or  ultimately  be  unable  to  complete,  the  development  and 
commercialization of our product candidates.

Our  only  product  candidate,  ensifentrine,  is  in  clinical  development.  Clinical  drug  development  is  a  lengthy  and 
expensive process with uncertain timelines and uncertain outcomes. If clinical trials of ensifentrine are prolonged or 
delayed,  or  if  ensifentrine  in  later  stage  clinical  trials  fails  to  show  the  safety  and  efficacy  required  by  regulatory 
authorities,  we  or  our  collaborators  may  be  unable  to  obtain  required  regulatory  approvals  and  be  unable  to 
commercialize ensifentrine on a timely basis, or at all.

To obtain the requisite regulatory approvals to market and sell ensifentrine, we or any collaborator for ensifentrine 
must demonstrate through extensive pre-clinical studies and clinical trials that ensifentrine is safe and effective in 
humans. Clinical testing is expensive and can take many years to complete, and its outcome is inherently uncertain. 
Failure  can  occur  at  any  time  during  the  clinical  trial  process.  The  results  of  pre-clinical  studies  and  early-stage 
clinical trials of ensifentrine may not be predictive of the results of later-stage clinical trials. Product candidates in 
later stages of clinical trials may fail to show the desired safety and efficacy traits despite having progressed through 
pre-clinical  studies  and  initial  clinical  trials.  Regulators  interpretations  of  results  may  differ  from  our  own,  and 
expectations  can  change  over  time  while  a  product  is  in  clinical  development.  A  number  of  companies  in  the 
biopharmaceutical industry have suffered significant setbacks in advanced clinical trials due to lack of efficacy or 
adverse safety profiles, notwithstanding promising results in earlier trials. Our future clinical trial results may not be 
successful.

We  may  experience  delays  in  our  ongoing  clinical  trials  and  we  do  not  know  whether  planned  clinical  trials  will 
begin on time, need to be redesigned, enroll patients on time or be completed on schedule, if at all. Our clinical trials 
can be delayed, suspended, or terminated, or the utility of data from these trials may be compromised, for a variety 
of reasons, including the following:

•

•

inability to generate sufficient preclinical, toxicology or other in vivo or in vitro data to support the initiation or 
continuation of clinical trials; 

delays in or failure to obtain regulatory agreement on clinical trial design or implementation, including dose and 
frequency of administration;

40

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

delays in or failure to obtain regulatory authorization to commence a trial;

delays in or failure to reach agreement on acceptable terms with prospective CROs and clinical trial sites, the 
terms of which can be subject to extensive negotiation and may vary significantly among different CROs and 
trial sites;

inability  of  a  CRO  to  meet  their  contracted  obligations  regarding  subject  enrollment,  data  collection,  data 
monitoring, laboratory sample management, programming and analysis or other activities;

delays  in  or  failure  to  obtain  institutional  review  board  (“IRB”),  or  ethics  committee  approval  or  positive 
opinion at each site;

delays in or failure to recruit suitable patients to participate in a trial;

failure to have patients complete a trial or return for post-treatment follow-up;

clinical sites deviating from trial protocol or dropping out of a trial or committing gross misconduct or fraud;

delays to the addition of new clinical trial sites;

inability to achieve or maintain double blinding of ensifentrine;

unexpected technical issues during manufacture of ensifentrine and the corresponding drug products;

variability in drug product performance and/or stability;

discoveries that may reduce the commercial viability of ensifentrine;

inability to manufacture sufficient quantities of ensifentrine for use in clinical trials;

the quality or stability of ensifentrine falling below acceptable standards for either safety or efficacy;

third-party actions claiming infringement by ensifentrine in clinical trials and obtaining injunctions interfering 
with our progress;

business  interruptions  resulting  from  geo-political  actions,  including  war  and  terrorism,  such  as  the  ongoing 
conflict between Russia and Ukraine, or natural disasters including earthquakes, typhoons, floods and fires;

trade sanctions imposed by the United States or other governments impacting our ability to transfer money to 
certain countries, such as Russia, to pay clinical trials sites in those countries;

safety or tolerability concerns causing us or our collaborators, as applicable, to suspend or terminate a trial if we 
or our collaborators find that the participants are being exposed to unacceptable health risks;

changes in regulatory requirements, policies and guidelines;

lower than anticipated retention rates of patients and volunteers in clinical trials;

failure  of  our  third-party  research  contractors  to  comply  with  regulatory  requirements  or  to  meet  their 
contractual obligations to us in a timely manner, or at all; and

difficulty  in  certain  countries  in  identifying  the  sub-populations  that  we  are  trying  to  evaluate  in  a  particular 
trial, which may delay enrollment.

We  could  encounter  delays  if  a  clinical  trial  is  suspended  or  terminated  by  us,  by  the  IRBs  of  the  institutions  in 
which such trials are being conducted, by the Data Review Committee or Data Safety Monitoring Board for such 
trial or by the FDA 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  or  other  regulatory 
authorities resulting in the imposition of a clinical hold, unforeseen safety issues or adverse side effects, failure to 
demonstrate a benefit from using a drug, failure of our clinical trials to demonstrate adequate efficacy and safety, 
changes in governmental regulations or administrative actions or lack of adequate funding to continue the clinical 
trial.

Moreover,  principal  investigators  for  our  clinical  trials  may  serve  as  scientific  advisors  or  consultants  to  us  from 
time to time and receive compensation in connection with such services. Under certain circumstances, we may be 
required to report some of these relationships to the FDA or other regulatory authority. The FDA or other regulatory 
authority may conclude that a financial relationship between us and a principal investigator has created a conflict of 
interest  or  otherwise  affected  interpretation  of  the  study.  The  FDA  or  other  regulatory  authority  may  therefore 

41

question the integrity of the data generated at the applicable clinical trial site and the utility of the clinical trial itself 
may be jeopardized. This could result in a delay in approval, or rejection, of our marketing applications by the FDA 
or  other  regulatory  authority,  as  the  case  may  be,  and  may  ultimately  lead  to  the  denial  of  marketing  approval  of 
ensifentrine.

If we experience delays in the completion of any clinical trial of ensifentrine or any clinical trial of ensifentrine is 
terminated, the commercial prospects of ensifentrine may be harmed, and our ability to generate product revenues 
from ensifentrine, if any, will be delayed. Moreover, any delays in completing our clinical trials will increase our 
costs,  slow  down  the  development  and  approval  process  of  ensifentrine  and  jeopardize  our  ability  to  commence 
product sales and generate revenue, if any. Significant clinical trial delays could also allow our competitors to bring 
products to market before we do or shorten any periods during which we have the exclusive right to commercialize 
ensifentrine and could impair our ability to commercialize ensifentrine. 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 ensifentrine.

Clinical trials must be conducted in accordance with the laws and regulations of the FDA, EU rules and regulations 
and other applicable regulatory authorities’ legal requirements, regulations or guidelines, and are subject to oversight 
by these governmental agencies and IRBs (or other ethics committees) at the medical institutions where the clinical 
trials  are  conducted.  In  addition,  clinical  trials  must  be  conducted  with  supplies  of  ensifentrine  produced  under 
current good manufacturing practice, or cGMP, and similar foreign requirements and other regulations. Furthermore, 
we rely on CROs and clinical trial sites to ensure the proper and timely conduct of our clinical trials and while we 
have agreements governing their committed activities, we have limited influence over their actual performance. We 
depend on our collaborators and on medical institutions and CROs to conduct our clinical trials in compliance with 
good clinical practice, or GCP, requirements. To the extent our collaborators or the CROs fail to enroll participants 
for our clinical trials, fail to conduct the study to GCP standards or are delayed for a significant time in the execution 
of  trials,  including  achieving  full  enrollment,  we  may  be  affected  by  increased  costs,  program  delays  or  both.  In 
addition, clinical trials that are conducted in countries outside the EU and the United States may subject us to further 
delays and expenses as a result of increased shipment costs, additional regulatory requirements and the engagement 
of non-EU and non-U.S. CROs, as well as expose us to risks associated with clinical investigators who are unknown 
to the FDA or the EMA, and different standards of diagnosis, screening and medical care.

In  addition,  the  FDA’s  and  other  regulatory  authorities’  policies  with  respect  to  clinical  trials  may  change  and 
additional government regulations may be enacted. For instance, the regulatory landscape related to clinical trials in 
the EU recently evolved. The EU Clinical Trials Regulation (“CTR”), which was adopted in April 2014 and repeals 
the  EU  Clinical  Trials  Directive,  became  applicable  on  January  31,  2022.  While  the  Clinical  Trials  Directive 
required a separate clinical trial application (“CTA”), to be submitted in each member state in which the clinical trial 
takes  place,  to  both  the  competent  national  health  authority  and  an  independent  ethics  committee,  the  CTR 
introduces a centralized process and only requires the submission of a single application for multi-center trials. The 
CTR allows sponsors to make a single submission to both the competent authority and an ethics committee in each 
member  state,  leading  to  a  single  decision  per  member  state.  The  assessment  procedure  of  the  CTA  has  been 
harmonized as well, including a joint assessment by all member states concerned, and a separate assessment by each 
member state with respect to specific requirements related to its own territory, including ethics rules. Each member 
state’s decision is communicated to the sponsor via the centralized EU portal. Once the CTA is approved, clinical 
study development may proceed. The CTR foresees a three-year transition period. The extent to which ongoing and 
new  clinical  trials  will  be  governed  by  the  CTR  varies.  Clinical  trials  for  which  an  application  was  submitted  (i) 
prior to January 31, 2022 under the Clinical Trials Directive, or (ii) between January 31, 2022 and January 31, 2023 
and for which the sponsor has opted for the application of the EU Clinical Trials Directive remain governed by said 
Directive until January 31, 2025. After this date, all clinical trials (including those which are ongoing) will become 
subject  to  the  provisions  of  the  CTR.  Compliance  with  the  CTR  requirements  by  us  and  our  third-party  service 
providers, such as CROs, may impact our developments plans. 

It  is  currently  unclear  to  what  extent  the  UK,  will  seek  to  align  its  regulations  with  the  EU.  The  UK  regulatory 
framework in relation to clinical trials is derived from existing EU legislation (as implemented into UK law, through 
secondary legislation).

On  January  17,  2022,  the  UK  Medicines  and  Healthcare  products  Regulatory  Agency  (“MHRA”),  launched  an 
eight-week  consultation  on  reframing  the  UK  legislation  for  clinical  trials.  The  consultation  closed  on  March  14, 
2022 and aims to streamline clinical trials approvals, enable innovation, enhance clinical trials transparency, enable 
greater  risk  proportionality,  and  promote  patient  and  public  involvement  in  clinical  trials.  The  outcome  of  the 
consultation  will  be  closely  watched  and  will  determine  whether  the  UK  chooses  to  align  with  the  (EU)  CTR  or 
diverge  from  it  to  maintain  regulatory  flexibility.  Under  the  terms  of  the  Protocol  on  Ireland/Northern  Ireland, 

42

provisions of the (EU) CTR which relate to the manufacture and import of investigational medicinal products and 
auxiliary medicinal products apply in Northern Ireland. A decision by the UK Government not to closely align its 
regulations with the new approach that has been adopted in the EU may have an effect on the cost of conducting 
clinical trials in the UK as opposed to other countries.

Ensifentrine  may  have  serious  adverse,  undesirable  or  unacceptable  side  effects  which  may  delay  or  prevent 
marketing  approval.  If  such  side  effects  are  identified  during  the  development  of  ensifentrine  or  following 
approval,  if  any,  we  may  need  to  abandon  our  development  of  ensifentrine,  the  commercial  profile  of  any 
approved  label  may  be  limited,  or  we  may  be  subject  to  other  significant  negative  consequences  following 
marketing approval, if any.

Undesirable  side  effects  that  may  be  caused  by  ensifentrine  could  cause  us  or  regulatory  authorities  to  interrupt, 
delay or halt clinical trials and could result in a more restrictive label or the delay or denial of regulatory approval by 
the  FDA  or  other  comparable  foreign  authorities.  During  the  conduct  of  clinical  trials,  patients  report  changes  in 
their health, including illnesses, injuries, and discomforts, to their study doctor. Often, it is not possible to determine 
whether or not the product candidate being studied caused these conditions. It is possible that as we test our product 
candidates in larger, longer and more extensive clinical trials, or as use of these product candidates becomes more 
widespread  if  they  receive  regulatory  approval,  illnesses,  injuries,  discomforts  and  other  adverse  events  that  were 
observed  in  previous  trials,  as  well  as  conditions  that  did  not  occur  or  went  undetected  in  previous  trials,  will  be 
reported by patients. Many times, side effects are only detectable after investigational products are tested in large-
scale  clinical  trials  or,  in  some  cases,  after  they  are  made  available  to  patients  on  a  commercial  scale  following 
approval. We have completed 20 Phase 1, 2 and nearly completed two Phase 3 clinical trials of ensifentrine. In these 
trials, some patients have experienced mild to moderate adverse reactions, including headache, cough, worsening of 
COPD, nasopharyngitis and hypertension.

Results  of  our  future  clinical  trials  could  reveal  a  high  and  unacceptable  severity  and  prevalence  of  adverse  side 
effects.  In  such  an  event,  our  trials  could  be  suspended  or  terminated  and  the  FDA  or  other  comparable  foreign 
regulatory authorities could order us to cease further development of or deny approval of ensifentrine for any or all 
targeted indications. The drug-related side effects could affect patient recruitment or the ability of enrolled patients 
to complete the trial or result in potential product liability claims. Additionally, if ensifentrine receives marketing 
approval and we or others later identify undesirable or unacceptable side effects caused by ensifentrine, a number of 
potentially significant negative consequences could result, including:

•

•

•

•

•

•

•

•

regulatory  authorities  may  withdraw  approvals  of  such  products  and  require  us  to  take  ensifentrine  off  the 
market;

regulatory authorities may require the addition of labeling statements, specific warnings, a contraindication or 
field alerts to physicians and pharmacies;

regulatory authorities may require a medication guide outlining the risks of such side effects for distribution to 
patients, or that we implement a REMS plan or similar risk management measures to ensure that the benefits of 
ensifentrine outweigh its risks;

we may be required to change the way ensifentrine is administered, conduct additional clinical trials or change 
the labeling of ensifentrine;

we may be subject to limitations on how we may promote ensifentrine;

sales of ensifentrine may decrease significantly;

we may be subject to litigation or product liability claims; and

our reputation may suffer.

Any  of  these  events  could  prevent  us  or  any  collaborators  from  achieving  or  maintaining  market  acceptance  of 
ensifentrine  or  could  substantially  increase  commercialization  costs  and  expenses,  which  in  turn  could  delay  or 
prevent us from generating significant revenue from the sale of ensifentrine.

We may not be successful in our efforts to develop ensifentrine for multiple indications, including asthma, CF or 
other respiratory diseases.

Part of our strategy is to continue to develop ensifentrine in indications other than COPD, such as CF and asthma 
and other formulations including fixed-dose combinations, MDI and DPI. Although our research and development 
efforts  to  date  have  suggested  that  ensifentrine  has  the  potential  to  treat  CF  and  asthma,  we  may  not  be  able  to 
develop ensifentrine in these indications or any other disease, or development may not be successful. In addition, the 

43

potential use of ensifentrine in other diseases may not be suitable for clinical development, including as a result of 
difficulties  enrolling  patients  in  any  clinical  studies  we  plan  to  initiate  or  the  potential  for  harmful  side  effects  or 
other  characteristics  that  might  suggest  marketing  approval  and  market  acceptance  are  unlikely.  If  we  do  not 
continue to successfully develop and begin to commercialize ensifentrine for multiple indications or formulations, 
we will face difficulty in obtaining product revenues in future periods, which could significantly harm our financial 
position.

We depend on enrollment of patients in our clinical trials for ensifentrine. If we are unable to enroll patients in 
our  clinical  trials,  or  enrollment  is  slower  than  anticipated,  our  research  and  development  efforts  could  be 
adversely affected.

Successful and timely completion of clinical trials for ensifentrine will require that we enroll a sufficient number of 
patient candidates. Trials may be subject to delays as a result of patient enrollment taking longer than anticipated or 
patient  withdrawal  and  other  external  factors  including  COVID-19.  Patient  enrollment  depends  on  many  factors, 
including  the  size  and  nature  of  the  patient  population,  the  severity  of  the  disease  under  investigation,  eligibility 
criteria for the trial, the proximity of patients to clinical sites, the design of the clinical protocol, the ability to obtain 
and maintain patient consents, the risk that enrolled patients will drop out of a trial, the availability of competing 
clinical  trials,  the  availability  of  new  drugs  approved  for  the  indication  the  clinical  trial  is  investigating  and 
clinicians’  and  patients’  perceptions  as  to  the  potential  advantages  of  the  drug  being  studied  in  relation  to  other 
available therapies. These factors may make it difficult for us to enroll enough patients to complete our clinical trials 
in a timely and cost-effective manner. Higher than expected numbers of patients could also discontinue participation 
in the clinical trials. Delays in the completion of any clinical trial of ensifentrine will increase our costs, slow down 
our development and approval of ensifentrine and delay or potentially jeopardize our ability to commence product 
sales and generate revenue. In addition, some 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 ensifentrine.

We may become exposed to costly and damaging liability claims, either when testing ensifentrine in the clinic or 
at the commercial stage, and our product liability insurance may not cover all damages from such claims.

We  are  exposed  to  potential  product  liability  and  professional  indemnity  risks  that  are  inherent  in  the  research, 
development,  manufacturing,  marketing  and  use  of  pharmaceutical  products.  Currently,  we  have  no  products  that 
have  been  approved  for  commercial  sale;  however,  the  current  and  future  use  of  ensifentrine  by  us  and  any 
collaborators  in  clinical  trials,  and  the  sale  of  ensifentrine,  if  approved,  in  the  future,  may  expose  us  to  liability 
claims.  These  claims  might  be  made  by  patients  that  use  the  product,  healthcare  providers,  pharmaceutical 
companies, our collaborators or others selling ensifentrine. Any claims against us, regardless of their merit, could be 
difficult  and  costly  to  defend  and  could  adversely  affect  the  market  for  ensifentrine  or  any  prospects  for 
commercialization  of  ensifentrine.  In  addition,  regardless  of  the  merits  or  eventual  outcome,  liability  claims  may 
result in:

•

•

•

•

•

•

•

•

•

decreased demand for ensifentrine;

injury to our reputation;

withdrawal of clinical trial participants;

costs to defend related litigation;

diversion of management’s time and our resources;

substantial monetary awards to trial participants or patients;

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

loss of revenue; and

the inability to commercialize or promote ensifentrine.

Although the clinical trial process is designed to identify and assess potential side effects, it is always possible that a 
drug, even after regulatory approval, may exhibit unforeseen side effects. If ensifentrine were to cause adverse side 
effects during clinical trials or after approval, we may be exposed to substantial liabilities. Physicians and patients 
may not comply with any warnings that identify known potential adverse effects and patients who should not use 
ensifentrine.

Although we maintain product liability insurance for ensifentrine, it is possible that our liabilities could exceed our 
insurance coverage. We intend to expand our insurance coverage to include the sale of commercial products if we 

44

obtain  marketing  approval  for  ensifentrine.  However,  we  may  not  be  able  to  maintain  insurance  coverage  at  a 
reasonable  cost  or  obtain  insurance  coverage  that  will  be  adequate  to  satisfy  any  liability  that  may  arise.  If  a 
successful  product  liability  claim  or  series  of  claims  is  brought  against  us  for  uninsured  liabilities  or  in  excess  of 
insured  liabilities,  our  assets  may  not  be  sufficient  to  cover  such  claims  and  our  business  operations  could  be 
impaired.

The  regulatory  approval  processes  of  the  FDA,  the  EMA  and  comparable  foreign  regulatory  authorities  are 
lengthy,  time  consuming  and  inherently  unpredictable,  and  if  we  are  ultimately  unable  to  obtain  regulatory 
approval for ensifentrine, our business will be substantially harmed.

The  time  required  to  obtain  approval  by  the  FDA,  the  European  Commission  and  comparable  foreign  regulatory 
authorities  is  unpredictable,  but  typically  takes  many  years  following  the  commencement  of  clinical  trials  and 
depends upon numerous factors, including substantial discretion of the regulatory authorities. In addition, approval 
policies,  regulations,  or  the  type  and  amount  of  clinical  data  necessary  to  gain  approval  may  change  during  the 
course  of  a  product  candidate’s  clinical  development  and  may  vary  among  jurisdictions.  We  have  not  obtained 
regulatory approval for ensifentrine and it is possible that ensifentrine or any product candidates we may develop in 
the future will never obtain regulatory approval.

Prior  to  obtaining  approval  to  commercialize  a  product  candidate  in  the  United  States  or  abroad,  we  or  our 
collaborators must demonstrate with substantial evidence from well-controlled clinical trials, and to the satisfaction 
of the FDA or foreign regulatory agencies, that such product candidate is safe and effective for its intended uses. 
Results  from  nonclinical  studies  and  clinical  trials  can  be  interpreted  in  different  ways.  Even  if  we  believe  the 
nonclinical  or  clinical  data  for  our  product  candidate  are  promising,  such  data  may  not  be  sufficient  to  support 
approval by the FDA and other regulatory authorities. The FDA or foreign regulatory agencies may also require us 
to conduct additional preclinical studies or clinical trials for ensifentrine either prior to or post-approval, or it may 
object to elements of our clinical development program.

Ensifentrine could fail to receive regulatory approval for many reasons, including the following:

•

•

•

•

•

•

•

•

•

•

we  may  be  unable  to  demonstrate  to  the  satisfaction  of  the  FDA,  the  EMA  or  comparable  foreign  regulatory 
authorities  that  ensifentrine  is  safe  and  effective,  with  the  required  level  of  statistical  significance,  for  its 
proposed indication;

we may be unable to demonstrate that ensifentrine’s benefits outweigh its safety risks;

the  FDA,  the  EMA  or  comparable  foreign  regulatory  authorities  may  disagree  with  our  interpretation  of  data 
from pre-clinical studies or clinical trials or may find the data to be unacceptable;

the FDA, the EMA or comparable foreign regulatory authorities may find that the dose or doses evaluated in 
Phase 3 clinical trials or the way in which double blinding was effected to be unacceptable;

the  data  collected  from  clinical  trials  of  ensifentrine  may,  for  various  reasons,  be  insufficient  to  support  the 
submission or approval of an NDA in the United States, a marketing authorization application (“MAA”) in the 
EU, or other comparable submission to obtain regulatory approval in other countries;

the  FDA  or  comparable  foreign  regulatory  authorities  may  fail  to  approve  the  manufacturing  processes  or 
facilities of third-party manufacturers with which we contract for clinical and commercial supplies;

FDA or comparable regulatory authorities may identify issues of GCP noncompliance or unacceptable practices 
at  clinical  sites  or  CROs  participating  in  our  clinical  studies,  rendering  clinical  data  insufficient  to  support 
approval;

the approval policies or regulations of the FDA or comparable foreign regulatory authorities may significantly 
change in a manner rendering our clinical data insufficient for approval;

the  FDA,  the  EMA  or  comparable  foreign  regulatory  authorities  may  disagree  with  the  design  or 
implementation of our clinical trials; and

the  FDA,  the  EMA  or  comparable  foreign  regulatory  authorities  may  disagree  with  our  proposed  product 
specifications and performance characteristics.

This lengthy approval process as well as the unpredictability of future clinical trial results may result in our failing to 
obtain  regulatory  approval  to  market  ensifentrine.  The  FDA,  the  EMA  and  other  regulatory  authorities  have 
substantial discretion in the approval process, and determining when or whether regulatory approval will be obtained 

45

for  ensifentrine.  Even  if  we  believe  the  data  collected  from  clinical  trials  of  ensifentrine  are  promising,  such  data 
may not be sufficient to support approval by the FDA, the European Commission or any other regulatory authority.

In addition, even if we were to obtain approval for any jurisdiction, regulatory authorities may approve ensifentrine 
for  fewer  or  more  limited  indications  than  we  request,  may  not  approve  the  price  we  intend  to  charge  for 
ensifentrine,  may  grant  approval  contingent  on  the  performance  of  costly  post-marketing  clinical  trials,  or  may 
approve ensifentrine with a label that does not include the labeling claims necessary or desirable for the successful 
commercialization of ensifentrine. Any of the foregoing scenarios could materially harm the commercial prospects 
for ensifentrine.

In addition, FDA and foreign regulatory authorities may change their approval policies and new regulations may be 
enacted. For instance, the EU pharmaceutical legislation is currently undergoing a complete review process, in the 
context of the Pharmaceutical Strategy for Europe initiative, launched by the European Commission in November 
2020.  The  European  Commission’s  proposal  for  revision  of  several  legislative  instruments  related  to  medicinal 
products  (potentially  revising  the  duration  of  regulatory  exclusivity,  eligibility  for  expedited  pathways,  etc.)  is 
currently expected during the first quarter of 2023. The proposed revisions, once they are agreed and adopted by the 
European  Parliament  and  European  Council  (not  expected  before  the  end  of  2024  or  early  2025)  may  have  a 
significant impact on the biopharmaceutical industry in the long term.

Disruptions at the FDA and other government agencies caused by funding shortages or global health concerns 
could hinder their ability to hire, retain or deploy key leadership and other personnel, or otherwise prevent new or 
modified products from being developed, approved or commercialized in a timely manner or at all, which could 
negatively impact our business.

The ability of the FDA and foreign regulatory authorities to review and approve new products can be affected by a 
variety  of  factors,  including  government  budget  and  funding  levels,  statutory,  regulatory,  and  policy  changes,  the 
FDA’s or foreign regulatory authorities’ ability to hire and retain key personnel and accept the payment of user fees, 
and  other  events  that  may  otherwise  affect  the  FDA’s  or  foreign  regulatory  authorities’  ability  to  perform  routine 
functions. Average review times at the FDA and foreign regulatory authorities have fluctuated in recent years as a 
result. In addition, government funding of other government agencies that fund research and development activities 
is  subject  to  the  political  process,  which  is  inherently  fluid  and  unpredictable.  Disruptions  at  the  FDA  and  other 
agencies,  such  as  the  EMA  following  its  relocation  to  Amsterdam  and  resulting  staff  changes,  may  also  slow  the 
time  necessary  for  new  drugs,  or  modifications  to  cleared  or  approved  drugs,  to  be  reviewed  and/or  approved  by 
necessary government agencies, which would adversely affect our business. For example, over the last several years, 
the  U.S.  government  has  shut  down  several  times  and  certain  regulatory  agencies,  such  as  the  FDA,  have  had  to 
furlough critical FDA employees and stop critical activities.

Separately, in response to the COVID-19 pandemic, the FDA postponed most inspections of domestic and foreign 
manufacturing facilities at various points. Even though the FDA has since resumed standard inspection operations of 
domestic  facilities  where  feasible,  the  FDA  has  continued  to  monitor  and  implement  changes  to  its  inspectional 
activities  to  ensure  the  safety  of  its  employees  and  those  of  the  firms  it  regulates  as  it  adapts  to  the  evolving 
COVID-19 pandemic, and any resurgence of the virus or emergence of new variants may lead to further inspectional 
delays. Regulatory authorities outside the United States have adopted similar restrictions or other policy measures in 
response  to  the  COVID-19  pandemic.  If  a  prolonged  government  shutdown  occurs,  or  if  global  health  concerns 
continue to prevent the FDA or other regulatory authorities from conducting their regular inspections, reviews, or 
other  regulatory  activities,  it  could  significantly  impact  the  ability  of  the  FDA  or  other  regulatory  authorities  to 
timely review and process our regulatory submissions, which could have a material adverse effect on our business.

Even  if  ensifentrine  obtains  regulatory  approval,  we  will  be  subject  to  ongoing  obligations  and  continued 
regulatory  review,  which  may  result  in  significant  additional  expense.  Additionally,  ensifentrine,  if  approved, 
could be subject to labeling and other restrictions and market withdrawal and we may be subject to penalties if we 
fail to comply with regulatory requirements or experience unanticipated problems with ensifentrine.

If  the  FDA  or  a  comparable  foreign  regulatory  authority  approves  ensifentrine,  the  manufacturing  processes, 
labeling,  packaging,  distribution,  adverse  event  reporting,  storage,  advertising,  promotion  and  record  keeping  for 
ensifentrine will be subject to extensive and ongoing regulatory requirements. These requirements include payment 
of annual user fees, submissions of safety and other post-marketing information and reports, facility registration and 
drug listing, as well as continued compliance with cGMP and similar foreign requirements for the manufacture of 
ensifentrine and GCP requirements for any clinical trials that we conduct post-approval, all of which may result in 
significant expense and limit our ability to commercialize ensifentrine. In addition, any approval we may obtain for 
ensifentrine  may  contain  significant  limitations  related  to  use  restrictions  for  specified  age  groups,  warnings, 
precautions  or  contraindications,  and  may  include  burdensome  post-approval  study  or  risk  management 

46

requirements. For example, the FDA may require a REMS in order to approve our product candidates, which could 
entail  requirements  for  a  medication  guide,  physician  training  and  communication  plans  or  additional  elements  to 
ensure safe use, such as restricted distribution methods, patient registries and other risk minimization tools. 

We  and  our  contract  manufacturers  will  also  be  subject  to  periodic  inspection  by  the  FDA  and  other  regulatory 
authorities to monitor compliance with these requirements and the terms of any product approval we may obtain. If 
we  or  a  regulatory  authority  discover  previously  unknown  problems  with  a  product,  such  as  adverse  events  of 
unanticipated severity or frequency, or problems with the facilities where the product is manufactured, a regulatory 
authority  may  impose  restrictions  on  that  product,  the  manufacturing  facility  or  us,  including  requiring  recall  or 
withdrawal of the product from the market or suspension of manufacturing. In addition, failure to comply with FDA 
and  other  comparable  foreign  regulatory  requirements  may  subject  our  company  to  administrative  or  judicially 
imposed sanctions, including:

•

•

•

•

•

•

•

•

•

•

•

delays in or the rejection of product approvals;

restrictions on our ability to conduct clinical trials, including full or partial clinical holds on ongoing or planned 
trials;

restrictions on the products, manufacturers or manufacturing process;

warning or untitled letters;

civil and criminal penalties;

injunctions;

suspension or withdrawal of regulatory approvals;

product seizures, detentions or import bans;

voluntary or mandatory product recalls and publicity requirements;

total or partial suspension of production; and

imposition of restrictions on operations, including costly new manufacturing requirements.

The occurrence of any event or penalty described above may inhibit our ability to commercialize ensifentrine and 
generate  revenue  and  could  require  us  to  expend  significant  time  and  resources  in  response  and  could  generate 
negative publicity.

In  addition,  the  policies  of  the  FDA  and  of  other  regulatory  authorities  may  change  and  additional  government 
regulations  may  be  enacted  that  could  prevent,  limit  or  delay  regulatory  approval  of  our  product  candidates.  We 
cannot  predict  the  likelihood,  nature  or  extent  of  government  regulation  that  may  arise  from  future  legislation  or 
administrative or executive action, either in the United States or abroad. If we are slow or unable to adapt to changes 
in existing requirements or the adoption of new requirements or policies, or if we are not able to maintain regulatory 
compliance, we may be subject to enforcement action and we may not achieve or sustain profitability.

The  FDA  and  other  foreign  regulatory  agencies  actively  enforce  the  laws  and  regulations  prohibiting  the 
promotion of off-label uses.

If  ensifentrine  is  approved  for  any  indication  and  we  are  found  to  have  improperly  promoted  off-label  uses  for 
ensifentrine, we may become subject to significant liability. The FDA and other regulatory agencies strictly regulate 
the promotional claims that may be made about prescription products, such as our product candidates, if approved. 
In particular, a product may not be promoted for uses that are not approved by the FDA or such other regulatory 
agencies as reflected in the product’s approved labeling. If we receive marketing approval for a product candidate, 
physicians may nevertheless prescribe it to their patients in a manner that is inconsistent with the approved label. If 
we are found to have promoted such off-label uses, we may become subject to significant liability. The U.S. federal 
government has levied large civil and criminal fines against companies for alleged improper promotion of off-label 
use  and  has  enjoined  several  companies  from  engaging  in  off-label  promotion.  The  FDA  has  also  requested  that 
companies  enter  into  consent  decrees  or  permanent  injunctions  under  which  specified  promotional  conduct  is 
changed or curtailed. If we cannot successfully manage the promotion of ensifentrine, if approved, we could become 
subject to significant liability, which would materially adversely affect our business and financial condition.

In  Europe,  off-label  use  is  not  per  se  regulated  by  the  EU  pharmaceutical  legislation  and  a  difference  is  made 
between the strict regulation of medicinal product and the use of medicinal products in medical practice. Off-label 
use is deferred to national regulation and may vary depending on the EU Member State(s).

47

Even if we obtain marketing approval of ensifentrine for any indication in a major pharmaceutical market such 
as the United States or EU, we may never obtain approval or commercialize ensifentrine in other major markets, 
which would limit our ability to realize its full market potential.

In order to market any products in a country or territory, we must establish and comply with numerous and varying 
regulatory requirements of such country or territory regarding safety and efficacy. Clinical trials conducted in one 
country  may  not  be  accepted  by  regulatory  authorities  in  other  countries,  and  regulatory  approval  in  one  country 
does  not  mean  that  regulatory  approval  will  be  obtained  in  any  other  country.  Approval  procedures  vary  among 
countries  and  can  involve  additional  product  testing  and  validation  and  additional  administrative  review  periods. 
Seeking regulatory approvals in all major markets could result in significant delays, difficulties and costs for us and 
may require additional pre-clinical studies or clinical trials which would be costly and time consuming. Regulatory 
requirements can vary widely from country to country and could delay or prevent the introduction of ensifentrine in 
those countries. Satisfying these and other regulatory requirements is costly, time consuming, uncertain and subject 
to  unanticipated  delays.  In  addition,  our  failure  to  obtain  regulatory  approval  in  any  country  may  delay  or  have 
negative  effects  on  the  process  for  regulatory  approval  in  other  countries.  We  currently  do  not  have  any  product 
candidates  approved  for  sale  in  any  jurisdiction,  whether  in  the  EU,  the  United  States  or  any  other  international 
markets,  and  we  do  not  have  experience  in  obtaining  regulatory  approval  in  international  markets.  If  we  fail  to 
comply  with  regulatory  requirements  in  international  markets  or  to  obtain  and  maintain  required  approvals,  our 
target market will be reduced and our ability to realize the full market potential of ensifentrine will be compromised.

48

Our employees and independent contractors, including principal investigators, CROs, consultants, vendors and 
collaboration  partners  may  engage  in  misconduct  or  other  improper  activities,  including  noncompliance  with 
regulatory standards and requirements.

We are exposed to the risk that our employees and independent contractors, including principal investigators, CROs, 
consultants,  vendors  and  collaboration  partners  may  engage  in  fraudulent  conduct  or  other  illegal  activities. 
Misconduct by these parties could include intentional, reckless or negligent conduct or unauthorized activities that 
violate: (i) the laws and regulations of the FDA, the EU and other similar regulatory bodies and the EU, including 
those  laws  that  require  the  reporting  of  true,  complete  and  accurate  information  to  such  authorities;  (ii) 
manufacturing standards; (iii) federal and state data privacy, security, fraud and abuse and other healthcare laws and 
regulations  in  the  United  States  and  abroad;  or  (iv)  laws  that  require  the  reporting  of  true,  complete  and  accurate 
financial information and data. Specifically, 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.  These  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. 
Activities subject to these laws could also involve the improper use or misrepresentation of information obtained in 
the  course  of  clinical  trials,  creating  fraudulent  data  in  our  pre-clinical  studies  or  clinical  trials  or  illegal 
misappropriation  of  drug  product,  which  could  result  in  regulatory  sanctions  and  cause  serious  harm  to  our 
reputation. It is not always possible to identify and deter misconduct by employees and other third parties, and the 
precautions we take to detect and prevent this activity 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 such laws or regulations. Additionally, we are subject to the risk that a person or government 
could allege such fraud or other misconduct, even if none occurred. 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  and  results  of  operations,  including  the  imposition  of  significant  civil,  criminal  and  administrative 
penalties, damages, monetary fines, disgorgements, possible exclusion from participation in Medicare, Medicaid and 
other  U.S.  federal  healthcare  programs  or  healthcare  programs  in  other  jurisdictions,  integrity  oversight  and 
reporting obligations to resolve allegations of non-compliance, individual imprisonment, other sanctions, contractual 
damages, reputational harm, diminished profits and future earnings, and curtailment of our operations.

Interim, “top-line,” or preliminary data from our clinical trials that we announce or publish from time to time 
may change as more patient data become available and are subject to audit and verification procedures that could 
result in material changes in the final data.

From time to time, we may publicly disclose top-line or preliminary data from our clinical trials, which is based on a 
preliminary  analysis  of  then-available  data,  and  the  results  and  related  findings  and  conclusions  are  subject  to 
change  following  a  more  comprehensive  review  of  the  data  related  to  the  particular  study  or  trial.  We  also  make 
assumptions, estimations, calculations and conclusions as part of our analyses of data, and we may not have received 
or had the opportunity to fully and carefully evaluate all data. As a result, the top-line or preliminary results that we 
report may differ from future results of the same studies, or different conclusions or considerations may qualify such 
results, once additional data have been received and fully evaluated. Top-line or preliminary data also remain subject 
to audit and verification procedures that may result in the final data being materially different from the top-line or 
preliminary data we previously published. As a result, top-line and preliminary data should be viewed with caution 
until the final data are available.

From time to time, we may also disclose interim data from our preclinical studies and clinical trials. Interim data 
from  clinical  trials  that  we  may  complete  are  subject  to  the  risk  that  one  or  more  of  the  clinical  outcomes  may 
materially  change  as  patient  enrollment  continues  and  more  patient  data  become  available.  Adverse  differences 
between interim data and final data could significantly harm our business prospects. 

Further, others, including regulatory agencies, may not accept or agree with our assumptions, estimates, calculations, 
conclusions or analyses or may interpret or weigh the importance of data differently, which could impact the value 
of the particular program, the approvability or commercialization of the particular product candidate or product and 
our company in general. In addition, the information we choose to publicly disclose regarding a particular study or 
clinical  trial  is  based  on  what  is  typically  extensive  information,  and  you  or  others  may  not  agree  with  what  we 
determine is material or otherwise appropriate information to include in our disclosure.

If the interim, top-line or preliminary data that we report differ from actual results, or if others, including regulatory 
authorities, disagree with the conclusions reached, our ability to obtain approval for, and commercialize, our product 
candidates may be harmed, which could harm our business, operating results, prospects or financial condition.

49

Risks Related to Healthcare Laws and Other Legal Compliance Matters

Enacted and future legislation may increase the difficulty and cost for us to obtain marketing approval of and 
commercialize ensifentrine and may affect the prices we may set.

In the United States, the EU and other foreign jurisdictions, there have been, and we expect there will continue to be, 
a number of legislative and regulatory changes and proposed 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 and improve the quality of healthcare. For example, in 
March  2010,  the  Patient  Protection  and  Affordable  Care  Act,  as  amended  by  the  Health  Care  and  Education 
Reconciliation  Act,  or  collectively  the  ACA,  was  enacted,  which  substantially  changes  the  way  healthcare  is 
financed by both governmental and private insurers. Among the provisions of the ACA, those of greatest importance 
to the pharmaceutical and biotechnology industries include the following:

•

•

•

•

•

•

•

•

an annual, non-deductible fee payable by any entity that manufactures or imports certain branded prescription 
drugs and biologic agents, which is apportioned among these entities according to their market share in certain 
government healthcare programs;

a new Medicare Part D coverage gap discount program, in which manufacturers must agree to offer point-of-
sale discounts off negotiated prices of applicable brand drugs to eligible beneficiaries during their coverage gap 
period, as a condition for the manufacturer’s outpatient drugs to be covered under Medicare Part D;

an  increase  in  the  statutory  minimum  rebates  a  manufacturer  must  pay  under  the  Medicaid  Drug  Rebate 
Program to 23.1% and 13.0% of the average manufacturer price for branded and generic drugs, respectively;

a  new  methodology  by  which  rebates  owed  by  manufacturers  under  the  Medicaid  Drug  Rebate  Program  are 
calculated for drugs that are inhaled, infused, instilled, implanted or injected;

extension  of  a  manufacturer’s  Medicaid  rebate  liability  to  covered  drugs  dispensed  to  individuals  who  are 
enrolled in Medicaid managed care organizations;

expansion of eligibility criteria for Medicaid programs by, among other things, allowing states to offer Medicaid 
coverage to certain individuals with income at or below 133% of the federal poverty level, thereby potentially 
increasing a manufacturer’s Medicaid rebate liability;

a new Patient-Centered Outcomes Research Institute to oversee, identify priorities in, and conduct comparative 
clinical effectiveness research, along with funding for such research; and

establishment  of  a  Center  for  Medicare  and  Medicaid  Innovation  at  the  Centers  for  Medicare  and  Medicaid 
Services,  or  CMS,  to  test  innovative  payment  and  service  delivery  models  to  lower  Medicare  and  Medicaid 
spending, potentially including prescription drug spending.

Since its enactment, there have been judicial, executive and Congressional challenges to certain aspects of the ACA. 
On  June  17,  2021,  the  U.S.  Supreme  Court  dismissed  the  most  recent  judicial  challenge  to  the  ACA  brought  by 
several states without specifically ruling on the constitutionality of the ACA. Prior to the Supreme Court’s decision, 
President  Biden  issued  an  executive  order  initiating  a  special  enrollment  period  from  February  15,  2021  through 
August 15, 2021 for purposes of obtaining health insurance coverage through the ACA marketplace. The executive 
order  also  instructed  certain  governmental  agencies  to  review  and  reconsider  their  existing  policies  and  rules  that 
limit access to healthcare.

In  addition,  other  legislative  changes  have  been  proposed  and  adopted  in  the  United  States  since  the  ACA  was 
enacted.  For  example,  the  Budget  Control  Act  of  2011  has,  among  other  things,  led  to  aggregate  reductions  of 
Medicare  payments  to  providers,  which,  due  to  subsequent  legislative  amendments  to  the  statute,  will  remain  in 
effect  through  2032,  with  the  exception  of  a  temporary  suspension  from  May  1,  2020  through  March  31,  2022, 
unless additional action is taken by Congress. On January 2, 2013, the American Taxpayer Relief Act of 2012 was 
signed  into  law,  which,  among  other  things,  further  reduced  Medicare  payments  to  several  types  of  providers, 
including hospitals, imaging centers and cancer treatment centers, and increased the statute of limitations period for 
the  government  to  recover  overpayments  to  providers  from  three  to  five  years.  In  addition,  the  American  Rescue 
Plan  Act  of  2021  was  signed  into  law,  which  eliminates  the  statutory  Medicaid  drug  rebate  cap,  currently  set  at 
100% of a drug’s average manufacturer price, beginning January 1, 2024. These laws and any laws enacted in the 
future may result in additional reductions in Medicare and other health care funding, which could have a material 
adverse effect on our customers and accordingly, our financial operations.

50

Moreover, payment methodologies may be subject to changes in healthcare legislation and regulatory initiatives. For 
example,  CMS  may  develop  new  payment  and  delivery  models,  such  as  bundled  payment  models.  In  addition, 
recently  there  has  been  heightened  governmental  scrutiny  over  the  manner  in  which  manufacturers  set  prices  for 
their  marketed  products.  Most  recently,  on  August  16,  2022,  the  Inflation  Reduction  Act  of  2022,  or  IRA,  was 
signed into law. Among other things, the IRA requires manufacturers of certain drugs to engage in price negotiations 
with  Medicare  (beginning  in  2026),  with  prices  that  can  be  negotiated  subject  to  a  cap;  imposes  rebates  under 
Medicare  Part  B  and  Medicare  Part  D  to  penalize  price  increases  that  outpace  inflation  (first  due  in  2023);  and 
replaces the Part D coverage gap discount program with a new discounting program (beginning in 2025). The IRA 
permits  the  Secretary  of  the  Department  of  Health  and  Human  Services,  or  HHS,  to  implement  many  of  these 
provisions through guidance, as opposed to regulation, for the initial years. For that and other reasons, it is currently 
unclear how the IRA will be effectuated. We expect that additional U.S. federal healthcare reform measures will be 
adopted in the future, any of which could limit the amounts that the U.S. federal government will pay for healthcare 
products and services, which could result in reduced demand for ensifentrine or additional pricing pressures.

Individual states in the United States have also become increasingly active in passing legislation and implementing 
regulations  designed  to  control  pharmaceutical  and  biological  product  pricing,  including  price  or  patient 
reimbursement  constraints,  discounts,  restrictions  on  certain  product  access  and  marketing  cost  disclosure  and 
transparency  measures,  and,  in  some  cases,  designed  to  encourage  importation  from  other  countries  and  bulk 
purchasing. Legally mandated price controls on payment amounts by third-party payors or other restrictions could 
harm  our  business,  results  of  operations,  financial  condition  and  prospects.  In  addition,  regional  healthcare 
authorities  and  individual  hospitals  are  increasingly  using  bidding  procedures  to  determine  what  pharmaceutical 
products and which suppliers will be included in their prescription drug and other healthcare programs. This could 
reduce the ultimate demand for ensifentrine or put pressure on our product pricing.

In  the  EU,  similar  political,  economic  and  regulatory  developments  may  affect  our  ability  to  profitably 
commercialize ensifentrine, if approved. 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. The delivery of health care in the EU, including the establishment 
and operation of health services and the pricing and reimbursement of medicines, is almost exclusively a matter for 
national, rather than EU, law and policy. National governments and health service providers have different priorities 
and  approaches  to  the  delivery  of  health  care  and  the  pricing  and  reimbursement  of  products  in  that  context.  In 
general, however, the healthcare budgetary constraints in most EU member states have resulted in restrictions on the 
pricing and reimbursement of medicines by relevant health service providers. Coupled with ever-increasing EU and 
national regulatory burdens on those wishing to develop and market products, this could prevent or delay marketing 
approval  of  ensifentrine,  restrict  or  regulate  post-approval  activities  and  affect  our  ability  to  commercialize 
ensifentrine, if approved. In international markets, reimbursement and healthcare payment systems vary significantly 
by country, and many countries have instituted price ceilings on specific products and therapies.

On December 13, 2021, Regulation No 2021/2282 on Health Technology Assessment (“HTA”) amending Directive 
2011/24/EU, was adopted. While the Regulation entered into force in January 2022, it will only begin to apply from 
January  2025  onwards,  with  preparatory  and  implementation-related  steps  to  take  place  in  the  interim.  Once  the 
Regulation becomes applicable, it will have a phased implementation depending on the concerned products. 

While the Regulation entered into force in January 2022, it will only begin to apply from January 2025 onwards, 
with  preparatory  and  implementation-related  steps  to  take  place  in  the  interim.  Once  the  Regulation  becomes 
applicable, it will have a phased implementation depending on the concerned products. 

This regulation intends to boost cooperation among EU member states in assessing health technologies, including 
new  medicinal  products,  and  providing  the  basis  for  cooperation  at  the  EU  level  for  joint  clinical  assessments  in 
these areas. The regulation will permit EU member states to use common HTA tools, methodologies, and procedures 
across  the  EU,  working  together  in  four  main  areas,  including  joint  clinical  assessment  of  the  innovative  health 
technologies with the most potential impact for patients, joint scientific consultations whereby developers can seek 
advice  from  HTA  authorities,  identification  of  emerging  health  technologies  to  identify  promising  technologies 
early,  and  continuing  voluntary  cooperation  in  other  areas.  Individual  EU  member  states  will  continue  to  be 
responsible  for  assessing  non-clinical  (e.g.,  economic,  social,  ethical)  aspects  of  health  technology,  and  making 
decisions on pricing and reimbursement.

We cannot predict the likelihood, nature or extent of government regulation that may arise from future legislation or 
administrative action, either in the United States 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 

51

not  able  to  maintain  regulatory  compliance,  ensifentrine  may  lose  any  regulatory  approval  that  may  have  been 
obtained and we may not achieve or sustain profitability.

Our  business  operations  and  current  and  future  relationships  with  investigators,  healthcare  professionals, 
consultants,  third-party  payors  and  customers  will  be  subject  to  applicable  healthcare  regulatory  laws,  which 
could expose us to penalties.

Our  business  operations  and  current  and  future  arrangements  with  investigators,  healthcare  professionals, 
consultants,  third-party  payors  and  customers,  may  expose  us  to  broadly  applicable  fraud  and  abuse  and  other 
healthcare laws and regulations. These laws may constrain the business or financial arrangements and relationships 
through  which  we  conduct  our  operations,  including  how  we  research,  market,  sell  and  distribute  ensifentrine,  if 
approved. Such laws include:

•

•

•

•

•

•

•

the U.S. federal Anti-Kickback Statute, which prohibits, among other things, persons or entities from knowingly 
and  willfully  soliciting,  offering,  receiving  or  providing  any  remuneration  (including  any  kickback,  bribe,  or 
certain rebate), directly or indirectly, overtly or covertly, in cash or in kind, to induce or reward, or in return for, 
either the referral of an individual for, or the purchase, lease, order or recommendation of, any good, facility, 
item or service, for which payment may be made, in whole or in part, under U.S. federal and state healthcare 
programs  such  as  Medicare  and  Medicaid.  A  person  or  entity  does  not  need  to  have  actual  knowledge  of  the 
statute or specific intent to violate it in order to have committed a violation;

the  U.S.  federal  false  claims  and  civil  monetary  penalties  laws,  including  the  civil  False  Claims  Act,  which, 
among  other  things,  impose  criminal  and  civil  penalties,  including  through  civil  whistleblower  or  qui  tam 
actions, against individuals or entities for knowingly presenting, or causing to be presented, to the U.S. federal 
government, claims for payment or approval that are false or fraudulent, knowingly making, using or causing to 
be made or used, a false record or statement material to a false or fraudulent claim, or from knowingly making a 
false  statement  to  avoid,  decrease  or  conceal  an  obligation  to  pay  money  to  the  U.S.  federal  government.  In 
addition, the government may assert that a claim including items and services resulting from a violation of the 
U.S. federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the False Claims Act; 

the  U.S.  federal  Health  Insurance  Portability  and  Accountability  Act  of  1996,  or  HIPAA,  which  imposes 
criminal and civil liability for, among other things, knowingly and willfully executing, or attempting to execute, 
a  scheme  to  defraud  any  healthcare  benefit  program,  or  knowingly  and  willfully  falsifying,  concealing  or 
covering  up  a  material  fact  or  making  any  materially  false  statement,  in  connection  with  the  delivery  of,  or 
payment for, healthcare benefits, items or services; similar to the U.S. federal Anti-Kickback Statute, a person 
or entity does not need to have actual knowledge of the statute or specific intent to violate it in order to have 
committed a violation;

the FDCA, which prohibits, among other things, the adulteration or misbranding of drugs, biologics and medical 
devices;

the U.S. federal legislation commonly referred to as Physician Payments Sunshine Act, enacted as part of the 
ACA, and its implementing regulations, which requires certain manufacturers of drugs, devices, biologics and 
medical supplies that are reimbursable under Medicare, Medicaid, or the Children’s Health Insurance Program 
to  report  annually  to  the  government  information  related  to  certain  payments  and  other  transfers  of  value  to 
physicians  (defined  to  include  doctors,  dentists,  optometrists,  podiatrists  and  chiropractors),  certain  non-
physician  practitioners  (physician  assistants,  nurse  practitioners,  clinical  nurse  specialists,  certified  nurse 
anesthetists,  anesthesiology  assistants  and  certified  nurse-midwives),  and  teaching  hospitals,  as  well  as 
ownership  and  investment  interests  held  by  the  physicians  described  above  and  their  immediate  family 
members;

analogous state laws and regulations, including: state anti-kickback and false claims laws, which may apply to 
our business practices, including but not limited to, research, distribution, sales and marketing arrangements and 
claims involving healthcare items or services reimbursed by any third-party payor, including private insurers; 
state  laws  that  require  pharmaceutical  companies  to  comply  with  the  pharmaceutical  industry’s  voluntary 
compliance guidelines and the relevant compliance guidance promulgated by the U.S. federal government, or 
otherwise restrict payments that may be made to healthcare providers and other potential referral sources; and 
state  laws  and  regulations  that  require  drug  manufacturers  to  file  reports  relating  to  pricing  and  marketing 
information,  which  requires  tracking  gifts  and  other  remuneration  and  items  of  value  provided  to  healthcare 
professionals and entities; and

in  the  EU,  interactions  between  pharmaceutical  companies  and  health  care  professionals  and  health  care 
organizations,  are  also  governed  by  strict  laws,  regulations,  industry  self-regulation  codes  of  conduct  and 

52

physicians’  codes  of  professional  conduct  both  at  EU  level  and  in  the  individual  EU  member  states.  The 
provision  of  benefits  or  advantages  to  physicians  to  induce  or  encourage  the  prescription,  recommendation, 
endorsement, purchase, supply, order or use of pharmaceutical products is prohibited in the EU. Relationships 
with healthcare professionals and associations are subject to stringent anti-gift statutes and anti-bribery laws, the 
scope  of  which  differs  across  the  EU.  In  addition,  national  “Sunshine  Acts”  may  require  pharmaceutical 
companies  to  report/publish  transfers  of  value  provided  to  health  care  professionals  and  associations  on  a 
regular  (e.g.  annual)  basis.  Failure  to  comply  with  these  requirements  could  result  in  reputational  risk,  public 
reprimands, administrative penalties, fines or imprisonment;

Ensuring that our internal operations and business arrangements with third parties comply with applicable healthcare 
laws  and  regulations  involves  substantial  costs.  It  is  possible  that  governmental  authorities  will  conclude  that  our 
business practices do not comply with current or future statutes, regulations, agency guidance 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 the laws described above or any other governmental laws and regulations that may apply to us, we may be 
subject to significant penalties, including civil, criminal and administrative penalties, damages, fines, exclusion from 
U.S.  government  funded  healthcare  programs,  such  as  Medicare  and  Medicaid,  or  similar  programs  in  other 
countries  or  jurisdictions,  a  corporate  integrity  agreement  or  other  agreement  to  resolve  allegations  of  non-
compliance  with  these  laws,  disgorgement,  individual  imprisonment,  contractual  damages,  reputational  harm, 
diminished profits and the curtailment or restructuring of our operations. If any of the physicians or other providers 
or entities with whom we expect to do business are found to not be in compliance with applicable laws, they may be 
subject  to  criminal,  civil  or  administrative  sanctions,  including  exclusions  from  government  funded  healthcare 
programs and imprisonment, which could affect our ability to operate our business. Further, defending against any 
such actions can be costly, time-consuming and may require significant personnel resources. Therefore, even if we 
are successful in defending against any such actions that may be brought against us, our business may be impaired.

Actual  or  perceived  failures  to  comply  with  applicable  data  protection,  privacy  and  security  laws,  regulations, 
standards and other requirements could adversely affect our business, results of operations, and financial condition.

The  global  data  protection  landscape  is  rapidly  evolving,  and  we  are  or  may  become  subject  to  numerous  state, 
federal  and  foreign  laws,  requirements  and  regulations  governing  the  collection,  use,  disclosure,  retention,  and 
security  of  personal  information,  such  as  information  that  we  may  collect  in  connection  with  clinical  trials. 
Implementation standards and enforcement practices are likely to remain uncertain for the foreseeable future, and we 
cannot yet determine the impact future laws, regulations, standards, or perception of their requirements may have on 
our  business.  This  evolution  may  create  uncertainty  in  our  business,  affect  our  ability  to  operate  in  certain 
jurisdictions  or  to  collect,  store,  transfer  use  and  share  personal  information,  necessitate  the  acceptance  of  more 
onerous obligations in our contracts, result in liability or impose additional costs on us. The cost of compliance with 
these laws, regulations and standards is high and is likely to increase in the future. Any failure or perceived failure 
by  us  to  comply  with  federal,  state  or  foreign  laws  or  regulations,  our  internal  policies  and  procedures  or  our 
contracts  governing  our  processing  of  personal  information  could  result  in  negative  publicity,  government 
investigations  and  enforcement  actions,  claims  by  third  parties  and  damage  to  our  reputation,  any  of  which  could 
have a material adverse effect on our business, results of operation, and financial condition.

As our operations and business grow, we may become subject to or affected by new or additional data protection 
laws  and  regulations  and  face  increased  scrutiny  or  attention  from  regulatory  authorities.  In  the  United  States, 
HIPAA,  as  amended  by  the  Health  Information  Technology  for  Economic  and  Clinical  Health  Act  of  2009,  and 
regulations implemented thereunder, or collectively HIPAA, imposes, among other things, certain standards relating 
to  the  privacy,  security,  transmission  and  breach  reporting  of  individually  identifiable  health  information.  Most 
healthcare providers, including research institutions from which we obtain patient health information, are subject to 
privacy  and  security  regulations  promulgated  under  HIPAA.  We  do  not  believe  that  we  are  currently  acting  as  a 
covered entity or business associate under HIPAA and thus are not directly subject to its requirements or penalties. 
However, depending on the facts and circumstances, we could face substantial criminal penalties if we knowingly 
receive  individually  identifiable  health  information  from  a  HIPAA-covered  healthcare  provider  or  research 
institution that has not satisfied HIPAA’s requirements for disclosure of individually identifiable health information. 

Certain states have also adopted comparable privacy and security laws and regulations, some of which may be more 
stringent  than  HIPAA.  Such  laws  and  regulations  will  be  subject  to  interpretation  by  various  courts  and  other 
governmental authorities, thus creating potentially complex compliance issues for us and our future customers and 
strategic  partners.  For  example,  California  enacted  the  California  Consumer  Privacy  Act,  (“CCPA”),  which  went 
into  effect  on  January  1,  2020.  The  CCPA,  among  other  things,  creates  data  privacy  obligations  for  covered 
companies  and  provides  privacy  rights  to  California  consumers,  including  rights  to  access  and  delete  their 
information,  to  opt  out  of  certain  information  sharing,  and  receive  detailed  information  about  how  their  personal 

53

information  is  used.  The  CCPA  also  creates  a  private  right  of  action  with  statutory  damages  for  certain  data 
breaches,  thereby  potentially  increasing  risks  associated  with  a  data  breach.  Although  the  law  includes  limited 
exceptions  for  health-related  information,  it  may  regulate  or  impact  our  processing  of  personal  information 
depending  on  the  context.  Further,  the  California  Privacy  Rights  Act  (“CPRA”)  generally  went  into  effect  on 
January 1, 2023 and significantly amends the CCPA. It imposes additional data protection obligations on covered 
businesses,  including  additional  consumer  rights  processes,  limitations  on  data  uses,  new  audit  requirements  for 
higher  risk  data,  and  opt  outs  for  certain  uses  of  sensitive  data.  It  also  creates  a  new  California  data  protection 
agency  authorized  to  issue  substantive  regulations  and  will  likely  result  in  increased  privacy  and  information 
security  enforcement.  Additional  compliance  investment  and  potential  business  process  changes  may  be  required. 
Similar laws have passed in Virginia, Connecticut, Utah and Colorado, and have been proposed in other states and at 
the federal level, reflecting a trend toward more stringent privacy legislation in the United States. The enactment of 
such laws could have potentially conflicting requirements that would make compliance challenging. In the event that 
we are subject to or affected by HIPAA, the CCPA, the CPRA or other domestic privacy and data protection laws, 
any  liability  from  failure  to  comply  with  the  requirements  of  these  laws  could  adversely  affect  our  financial 
condition.

We  are  also  subject  to  diverse  laws  and  regulations  relating  to  data  privacy  and  security  in  the  EU  and  the  EEA, 
including the GDPR. The GDPR went into effect in May 2018 and imposes strict requirements for processing the 
personal data of individuals within the EEA. The GDPR imposes strict obligations on the ability to process health-
related and other personal data of individuals within the EEA, including in relation to use, collection, analysis, and 
transfer (including cross-border transfer) of such personal data. Companies that must comply with the GDPR face 
increased  compliance  obligations  and  risk,  including  more  robust  regulatory  enforcement  of  data  protection 
requirements and potential fines for noncompliance of up to €20 million or 4% of the annual global revenues of the 
noncompliant  company,  whichever  is  greater.  The  law  is  also  developing  rapidly  and  in  July  2020,  the  Court  of 
Justice  of  the  EU  limited  how  organizations  could  lawfully  transfer  personal  data  from  the  EEA  to  the  U.S.  by 
invalidating the Privacy Shield for purposes of international transfers and imposing further restrictions on the used 
of  standard  contractual  clauses.  In  March  2022,  the  U.S.  and  EU  announced  a  new  regulatory  regime  intended  to 
replace the invalidated regulations; however, this new EU-U.S. Data Privacy Framework has not been implemented 
beyond an executive order signed by President Biden on October 7, 2022 on Enhancing Safeguards for United States 
Signals Intelligence Activities. European court and regulatory decisions subset to the CJEU decision of July 2020 
have taken a restrictive approach to international data transfers.

Relatedly,  since  the  beginning  of  2021,  following  the  United  Kingdom’s  withdrawal  from  the  EEA  and  the 
European Union, and the expiry of the transition period, companies have had to comply with both the GDPR and the 
GDPR as incorporated into United Kingdom national law, the latter regime having the ability to separately fine up to 
the  greater  of  £17.5  million  or  4%  of  global  turnover.  The  relationship  between  the  United  Kingdom  and  the 
European Union in relation to certain aspects of data protection law remains unclear, for example around how data 
can lawfully be transferred between each jurisdiction, which exposes us to further compliance risk. 

Compliance  with  applicable  data  protection  laws  and  regulations  could  require  us  to  take  on  more  onerous 
obligations in our contracts, restrict our ability to collect, use and disclose data, or in some cases, impact our ability 
to  operate  in  certain  jurisdictions.  Failure  by  us  or  our  collaborators  and  third-party  providers  to  comply  with 
applicable data protection laws and regulations could result in government enforcement actions (which could include 
civil  or  criminal  penalties),  private  litigation  and/or  adverse  publicity  and  could  negatively  affect  our  operating 
results  and  business.  Moreover,  clinical  trial  subjects  about  whom  we  or  our  potential  collaborators  obtain 
information, as well as the providers who share this information with us, may contractually limit our ability to use 
and disclose such information. Claims that we have violated individuals’ privacy rights, failed to comply with data 
protection laws or breached our contractual obligations, even if we are not found liable, could be expensive and time 
consuming  to  defend,  could  result  in  adverse  publicity  and  could  have  a  material  adverse  effect  on  our  business, 
financial condition, results of operations and prospects.

The increasing focus on environmental sustainability and social initiatives could increase our costs, harm our, 
reputation and adversely impact our financial results. 

There  has  been  increasing  public  focus  by  investors,  environmental  activists,  the  media  and  governmental  and 
nongovernmental  organizations  on  a  variety  of  environmental,  social  and  other  sustainability  matters.  We  may 
experience pressure to make commitments relating to sustainability matters that affect us, including the design and 
implementation  of  specific  risk  mitigation  strategic  initiatives  relating  to  sustainability.  If  we  are  not  effective  in 
addressing  environmental,  social  and  other  sustainability  matters  affecting  our  business,  or  setting  and  meeting 
relevant  sustainability  goals,  our  reputation  and  financial  results  may  suffer.  In  addition,  we  may  experience 

54

increased  costs  in  order  to  execute  upon  our  sustainability  goals  and  measure  achievement  of  those  goals,  which 
could have an adverse impact on our business and financial condition.

In addition, this emphasis on environmental, social and other sustainability matters has resulted and may result in the 
adoption of new laws and regulations, including new reporting requirements. If we fail to comply with new laws, 
regulations or reporting requirements, our reputation and business could be adversely impacted.

We are subject to environmental, health and safety laws and regulations, and we may become exposed to liability 
and substantial expenses in connection with environmental compliance or remediation activities.

Our sub-contracted operations, including our research, development, testing and manufacturing activities, are subject 
to numerous environmental, health and safety laws and regulations. These laws and regulations govern, among other 
things,  the  controlled  use,  handling,  release  and  disposal  of  and  the  maintenance  of  a  registry  for,  hazardous 
materials  and  biological  materials,  such  as  chemical  solvents,  human  cells,  carcinogenic  compounds,  mutagenic 
compounds and compounds that have a toxic effect on reproduction, laboratory procedures and exposure to blood-
borne  pathogens.  If  we  fail  to  comply  with  such  laws  and  regulations,  we  could  be  subject  to  fines  or  other 
sanctions.

As with other companies engaged in activities similar to ours, we face a risk of environmental liability inherent in 
our current and historical activities, including liability relating to releases of or exposure to hazardous or biological 
materials. Environmental, health and safety laws and regulations are becoming more stringent. We may be required 
to incur substantial expenses in connection with future environmental compliance or remediation activities, in which 
case, our production and development efforts may be interrupted or delayed.

55

We  are  subject  to  anti-corruption  laws,  as  well  as  export  control  laws,  customs  laws,  sanctions  laws  and  other 
laws  governing  our  operations.  If  we  fail  to  comply  with  these  laws,  we  could  be  subject  to  civil  or  criminal 
penalties, other remedial measures and legal expenses.

Our operations are subject to anti-corruption laws, including the U.K. Bribery Act 2010, or Bribery Act, the U.S. 
Foreign  Corrupt  Practices  Act,  or  FCPA,  and  other  anti-corruption  laws  that  apply  in  countries  where  we  do 
business and may do business in the future. The Bribery Act, FCPA and these other laws generally prohibit us, our 
officers and our employees and intermediaries from bribing, being bribed or making other prohibited payments to 
government officials or other persons to obtain or retain business or gain some other business advantage. We may in 
the  future  operate  in  jurisdictions  that  pose  a  high  risk  of  potential  Bribery  Act  or  FCPA  violations,  and  we  may 
participate in collaborations and relationships with third parties whose actions could potentially subject us to liability 
under the Bribery Act, FCPA or local anti-corruption laws. In addition, we cannot predict the nature, scope or effect 
of  future  regulatory  requirements  to  which  any  of  our  international  operations  might  be  subject  or  the  manner  in 
which existing laws might be administered or interpreted.

We  also  are  subject  to  other  laws  and  regulations  governing  any  international  operations,  including  regulations 
administered by the governments of the United Kingdom and the United States, and authorities in the EU, including 
applicable  export  control  regulations,  economic  sanctions  on  countries  and  persons,  customs  requirements  and 
currency  exchange  regulations,  or,  collectively,  the  Trade  Control  laws.  In  particular,  we  engaged  a  number  of 
clinical  trial  sites  in  Russia  in  connection  with  our  Phase  3  ENHANCE  clinical  program  and,  with  the  ongoing 
conflict between Russia and Ukraine, and resulting sanctions imposed by the United States and other governments, 
there is an increased risk that our ability to pay clinical sites or conduct clinical trials in Russia, may be impacted.

There  is  no  assurance  that  we  will  be  completely  effective  in  ensuring  our  compliance  with  all  applicable  anti-
corruption laws, including the Bribery Act, the FCPA or other legal requirements, including Trade Control laws. If 
we are not in compliance with the Bribery Act, the FCPA and other anti-corruption laws or Trade Control laws, we 
may be subject to criminal and civil penalties, disgorgement and other sanctions and remedial measures and legal 
expenses. Any investigation of any potential violations of the Bribery Act, the FCPA, other anti-corruption laws or 
Trade Control laws by U.K., U.S. or other authorities, even if it is ultimately determined that we did not violate such 
laws, could be costly and time consuming, require significant personnel resources and harm our reputation.

We  will  seek  to  build  and  continuously  improve  our  systems  of  internal  controls  and  to  remedy  any  weaknesses 
identified.  There  can  be  no  assurance,  however,  that  the  policies  and  procedures  will  be  followed  at  all  times  or 
effectively detect and prevent violations of the applicable laws by one or more of our employees, consultants, agents 
or collaborators and, as a result, we could be subject to fines, penalties or prosecution.

Risks Related to Commercialization

We  operate  in  a  highly  competitive  and  rapidly  changing  industry,  which  may  result  in  others  discovering, 
developing or commercializing competing products before or more successfully than we do.

The  biopharmaceutical  and  pharmaceutical  industries  are  highly  competitive  and  subject  to  significant  and  rapid 
technological  change.  Our  success  is  highly  dependent  on  our  ability  to  discover,  develop  and  obtain  marketing 
approval for new products on a cost-effective basis and to market them successfully. If ensifentrine is approved for 
any  indication,  we  will  face  intense  competition  from  a  variety  of  businesses,  including  large,  fully  integrated 
pharmaceutical  companies,  specialty  pharmaceutical  companies  and  biopharmaceutical  companies,  academic 
institutions, government agencies and other private and public research institutions in Europe, the United States and 
other  jurisdictions.  These  organizations  may  have  significantly  greater  resources  than  we  do  and  conduct  similar 
research, seek patent protection and establish collaborative arrangements for research, development, manufacturing 
and marketing of products that may compete with ensifentrine.

Given  the  number  of  products  already  on  the  market  to  treat  COPD,  asthma  and  CF,  we  expect  to  face  intense 
competition  if  ensifentrine  is  approved  for  these  indications.  Companies  including  Boehringer  Ingelheim, 
GlaxoSmithKline,  AstraZeneca,  Novartis,  Vertex,  Viatris,  Theravance,  Gilead,  Genentech  and  Sunovion  currently 
have  treatments  on  the  market  for  COPD,  CF  and  asthma,  and  we  anticipate  that  new  companies  will  enter  these 
markets  in  the  future.  If  we  successfully  develop  and  commercialize  ensifentrine,  it  will  compete  with  existing 
therapies  and  new  therapies  that  may  become  available  in  the  future.  The  highly  competitive  nature  of,  and  rapid 
technological  changes  in,  the  biopharmaceutical  and  pharmaceutical  industries  could  render  ensifentrine  obsolete, 
less competitive or uneconomical. Our competitors may, among other things:

56

•

•

•

•

•

•

have significantly greater name recognition, financial, manufacturing, marketing, drug development, technical 
and  human  resources  than  we  do,  and  future  mergers  and  acquisitions  in  the  biopharmaceutical  and 
pharmaceutical industries may result in even more resources being concentrated in our competitors;

develop and commercialize products that are safer, more effective, less expensive, more convenient or easier to 
administer, or have fewer or less severe side effects;

obtain quicker regulatory approval;

establish superior proprietary positions covering our products and technologies;

implement more effective approaches to sales and marketing; or

form more advantageous strategic alliances.

Smaller  and  other  early  stage  companies  may  also  prove  to  be  significant  competitors,  particularly  through 
collaborative arrangements with large and established companies. These third parties compete with us in recruiting 
and retaining qualified scientific and management personnel, establishing clinical trial sites and patient registration 
for clinical trials, as well as in acquiring technologies complementary to, or necessary for, our programs. In addition, 
any  collaborators  we  may  have  may  decide  to  market  and  sell  products  that  compete  with  ensifentrine.  Our 
commercial opportunity could be reduced or eliminated if our competitors develop and commercialize products that 
are  more  effective,  have  fewer  or  less  severe  side  effects,  are  more  convenient  or  are  less  expensive  than 
ensifentrine. Our competitors may also obtain FDA or other regulatory approval for their product candidates more 
rapidly than we may obtain approval for ours, which could result in our competitors establishing or strengthening 
their market position before we are able to enter the market.

We  may  be  unable  to  obtain  orphan  drug  designation  from  the  FDA  or  similar  foreign  authorities  for 
ensifentrine for the treatment of CF, and even if we do obtain such designations, we may be unable to obtain or 
maintain  the  benefits  associated  with  orphan  drug  designation,  including  the  potential  for  orphan  drug 
exclusivity.

Under  the  Orphan  Drug  Act,  the  FDA  may  designate  a  product  as  an  orphan  drug  if  it  is  intended  to  treat  a  rare 
disease or condition, defined as one occurring in a patient population of fewer than 200,000 in the United States, or a 
patient population greater than 200,000 in the United States where there is no reasonable expectation that the cost of 
developing the drug will be recovered from sales in the United States. In the EU, orphan designation may be granted 
by the European Commission after receiving the opinion of the EMA’s Committee for Orphan Medicinal Products 
to promote the development of products (1) that are intended for the diagnosis, prevention or treatment that is life-
threatening or chronically debilitating, and (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 
be  unlikely  to  generate  sufficient  returns  in  the  EU  to  justify  the  necessary  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 medicine must be of significant benefit to those affected by the condition.

In the United States, orphan drug designation entitles a party to financial incentives such as opportunities for grant 
funding toward clinical trial costs, tax credits for qualified clinical testing and application fee waivers. In addition, if 
a  product  receives  the  first  FDA  approval  of  that  drug  for  the  indication  for  which  it  has  orphan  designation,  the 
product  is  entitled  to  orphan  drug  exclusivity,  which  means  the  FDA  may  not  approve  any  other  application  to 
market the same drug for the same indication for a period of seven years, except in limited circumstances, such as a 
showing  of  clinical  superiority  over  the  product  with  orphan  exclusivity  or  where  the  manufacturer  is  unable  to 
assure the availability of sufficient quantities of the orphan drug to meet the needs of patients with the rare disease or 
condition.  Under  the  FDA’s  regulations,  the  FDA  will  deny  orphan  drug  exclusivity  to  a  designated  drug  upon 
approval  if  the  FDA  has  already  approved  another  drug  with  the  same  active  ingredient  for  the  same  indication, 
unless the drug is demonstrated to be clinically superior to the previously approved drug. In the EU, orphan drug 
designation  entitles  a  party  to  financial  incentives  such  as  reduction  of  fees  or  fee  waivers.  Upon  grant  of  a 
marketing authorization, orphan medicinal products are entitled to ten years of market exclusivity for the approved 
therapeutic indication, during which time no similar medicinal product for the same indication may be placed on the 
market. However, during such period, marketing authorizations may be granted to a similar medicinal product with 
the same orphan indication if: (i) the applicant can establish that the second medicinal product, although similar to 
the  orphan  medicinal  product  already  authorized  is  safer,  more  effective  or  otherwise  clinically  superior  to  the 
orphan  medicinal  product  already  authorized;  (ii)  the  marketing  authorization  holder  for  the  orphan  medicinal 
product is unable to supply sufficient quantities of product. The European exclusivity period may be reduced to six 
years if, at the end of the fifth year, it is established that the product no longer meets the orphan designation criteria, 

57

including  where  it  is  shown  that  the  product  is  sufficiently  profitable  not  to  justify  maintenance  of  market 
exclusivity, or when the prevalence of the condition has increased above the orphan designation threshold.

We may seek orphan drug designation from the FDA and the European Commission (and comparable authorities) 
for  ensifentrine  for  the  treatment  of  CF.  Even  if  we  are  able  to  obtain  orphan  designation  for  ensifentrine  in  the 
United  States  and/or  the  EU  (and/or  other  foreign  jurisdictions),  we  may  not  be  the  first  to  obtain  marketing 
approval  for  any  particular  orphan  indication  due  to  the  uncertainties  associated  with  developing  pharmaceutical 
products,  which  could  prevent  us  from  marketing  ensifentrine  if  another  company  is  able  to  obtain  orphan  drug 
exclusivity  before  we  do.  In  addition,  exclusive  marketing  rights  in  the  United  States  and/or  the  EU  may  be 
unavailable if we seek approval for an indication broader than the orphan-designated indication or may be lost if the 
FDA and/or foreign regulatory authorities later determine that the request for designation was materially defective or 
if we are unable to assure sufficient quantities of the product to meet the needs of patients with the rare disease or 
condition  following  approval.  Further,  even  if  we  obtain  orphan  drug  exclusivity  for  ensifentrine,  that  exclusivity 
may not effectively protect ensifentrine from competition because different drugs with different active moieties can 
be approved for the same condition.

In  addition,  the  FDA  or  foreign  regulatory  authorities  can  subsequently  approve  products  with  the  same  active 
moiety for the same condition if the FDA or foreign regulatory authorities conclude that the later drug is clinically 
superior  on  the  basis  of  greater  safety,  greater  effectiveness,  or  a  major  contribution  to  patient  care.  Orphan  drug 
designation  neither  shortens  the  development  time  or  regulatory  review  time  of  a  drug  nor  gives  the  drug  any 
advantage in the regulatory review or approval process. In addition, while we intend to seek orphan drug designation 
for ensifentrine for the treatment of CF, we may never receive such designation.

The  successful  commercialization  of  ensifentrine  will  depend  in  part  on  the  extent  to  which  governmental 
authorities  and  health  insurers  establish  adequate  coverage,  reimbursement  levels  and  pricing  policies  for 
ensifentrine. Failure to obtain or maintain adequate coverage and reimbursement for ensifentrine, if approved, 
could limit our ability to market ensifentrine and decrease our ability to generate revenue.

The  availability  and  adequacy  of  coverage  and  reimbursement  by  governmental  healthcare  programs  such  as 
Medicare and Medicaid, private health insurers and other third-party payors are essential for most patients to be able 
to afford prescription medications such as ensifentrine, assuming approval. Our ability to achieve acceptable levels 
of  coverage  and  reimbursement  by  governmental  authorities,  private  health  insurers  and  other  organizations  will 
have  an  effect  on  our  ability  to  successfully  commercialize  ensifentrine.  Assuming  we  obtain  coverage  for 
ensifentrine by a third-party payor, the resulting reimbursement payment rates may not be adequate or may require 
co-payments  that  patients  find  unacceptably  high.  Moreover,  for  drugs  and  biologics  administered  under  the 
supervision of a physician, obtaining coverage and adequate reimbursement may be particularly difficult because of 
the  higher  prices  often  associated  with  such  products.  We  cannot  be  sure  that  coverage  and  reimbursement  in  the 
United States, the EU or elsewhere will be available for ensifentrine or any product that we may develop, and any 
reimbursement that may become available may be decreased or eliminated in the future.

Third-party payors increasingly are challenging prices charged for pharmaceutical products and services, and many 
third-party  payors  may  refuse  to  provide  coverage  and  reimbursement  for  particular  drugs  when  an  equivalent 
generic drug or a less expensive therapy is available. It is possible that a third-party payor may consider ensifentrine 
as  substitutable  and  only  offer  to  reimburse  patients  for  the  less  expensive  product.  Even  if  we  show  improved 
efficacy  or  improved  convenience  of  administration  with  ensifentrine,  pricing  of  existing  drugs  may  limit  the 
amount we will be able to charge for ensifentrine. These payors may deny or revoke the reimbursement status of a 
given  product  or  establish  prices  for  new  or  existing  marketed  products  at  levels  that  are  too  low  to  enable  us  to 
realize an appropriate return on our investment in ensifentrine. If reimbursement is not available or is available only 
at limited levels, we may not be able to successfully commercialize ensifentrine, and may not be able to obtain a 
satisfactory financial return on ensifentrine.

There is significant uncertainty related to the insurance coverage and reimbursement of newly approved products. In 
the United States, third-party payors, including private and governmental payors, such as the Medicare and Medicaid 
programs, play an important role in determining the extent to which new drugs and biologics will be covered. The 
Medicare and Medicaid programs increasingly are used as models for how private payors and other governmental 
payors  develop  their  coverage  and  reimbursement  policies  for  drugs  and  biologics.  Some  third-party  payors  may 
require  pre-approval  of  coverage  for  new  or  innovative  devices  or  drug  therapies  before  they  will  reimburse 
healthcare providers who use such therapies. It is difficult to predict at this time what third-party payors will decide 
with respect to the coverage and reimbursement for ensifentrine.

Obtaining and maintaining reimbursement status is time consuming and costly. No uniform policy for coverage and 
reimbursement  for  products  exists  among  third-party  payors  in  the  United  States.  Therefore,  coverage  and 

58

reimbursement  for  products  can  differ  significantly  from  payor  to  payor.  As  a  result,  the  coverage  determination 
process is often a time-consuming and costly process that will require us to provide scientific and clinical support for 
the use of ensifentrine to each payor separately, with no assurance that coverage and adequate reimbursement will be 
applied  consistently  or  obtained  in  the  first  instance.  Furthermore,  rules  and  regulations  regarding  reimbursement 
change  frequently,  in  some  cases  at  short  notice,  and  we  believe  that  changes  in  these  rules  and  regulations  are 
likely.  Specifically,  we  believe  that  Medicare  Part  B  will  play  an  important  role  in  the  reimbursement  of 
ensifentrine. Changes within how products are reimbursed through Medicare Part B could occur and those changes 
may affect the overall coverage of ensifentrine in the future. 

Outside  the  United  States,  international  operations  are  generally  subject  to  extensive  governmental  price  controls 
and other market regulations, and we believe the increasing emphasis on cost-containment initiatives in Europe and 
other countries has and will continue to put pressure on the pricing and usage of ensifentrine. In many countries, the 
prices of medical products are subject to varying price control mechanisms as part of national health systems. Other 
countries allow companies to fix their own prices for medical products, but monitor and control company profits. 
Additional foreign price controls or other changes in pricing regulation could restrict the amount that we are able to 
charge for ensifentrine. Accordingly, in markets outside the United States, the reimbursement for ensifentrine may 
be reduced compared with the United States and may be insufficient to generate commercially reasonable revenue 
and profits.

Moreover,  increasing  efforts  by  governmental  and  third-party  payors  in  the  United  States  and  abroad  to  cap  or 
reduce  healthcare  costs  may  cause  such  organizations  to  limit  both  coverage  and  the  level  of  reimbursement  for 
newly  approved  products  and,  as  a  result,  they  may  not  cover  or  provide  adequate  payment  for  ensifentrine.  We 
expect to experience pricing pressures in connection with the sale of ensifentrine due to the trend toward managed 
healthcare,  the  increasing  influence  of  health  maintenance  organizations  and  additional  legislative  changes.  The 
downward pressure on healthcare costs in general, particularly prescription drugs and surgical procedures and other 
treatments,  has  become  very  intense.  As  a  result,  increasingly  high  barriers  are  being  erected  to  the  entry  of  new 
products.

In addition, even if a pharmaceutical product obtains a marketing authorization in the EU, there can be no assurance 
that reimbursement for such product will be secured on a timely basis or at all. 

Ensifentrine  may  not  gain  market  acceptance,  in  which  case  our  ability  to  generate  product  revenues  will  be 
compromised.

Even if the FDA or any other regulatory authority approves the marketing of ensifentrine, whether developed on our 
own or with a collaborator, physicians, healthcare providers, patients or the medical community may not accept or 
use ensifentrine. If ensifentrine does not achieve an adequate level of acceptance, we may not generate significant 
product revenues or any profits from operations. The degree of market acceptance of ensifentrine will depend on a 
variety of factors, including:

•

•

•

•

•

•

•

the timing of market introduction;

the number and clinical profile of competing products;

the clinical indications for which ensifentrine is approved;

our ability to provide acceptable evidence of safety and efficacy;

the prevalence and severity of any side effects;

relative convenience, frequency, and ease of administration;

cost effectiveness;

• marketing, sales, and distribution support;

•

•

availability of adequate coverage, reimbursement and adequate payment from health maintenance organizations 
and other insurers, both public and private; and

other potential advantages over alternative treatment methods

If ensifentrine fails to gain market acceptance, this will adversely impact our ability to generate revenues. Even if 
ensifentrine  achieves  market  acceptance,  the  market  may  prove  not  to  be  large  enough  to  allow  us  to  generate 
significant revenues.

59

We  currently  have  limited  commercial  capabilities  and  infrastructure,  including  sales,  marketing,  operations, 
distribution,  and  reimbursement  infrastructure.  If  we  are  unable  to  develop  commercial  capabilities  and 
infrastructure, including sales, marketing, operations, distribution and reimbursement capabilities on our own or 
through collaborations, we may not be successful in commercializing ensifentrine.

We have limited sales, marketing, or operations, distribution or reimbursement capabilities and infrastructure and we 
have  not  previously  marketed,  sold  or  distributed  pharmaceutical  products.  The  establishment  of  commercial 
capabilities and infrastructure, including sales, marketing, operations, distribution, and reimbursement with technical 
expertise and supporting distribution capabilities to commercialize ensifentrine, is expensive and time consuming. 
Some or all of these costs may be incurred in advance of any approval of ensifentrine. In addition, we may not be 
able to hire a sales force that is sufficient in size or has adequate expertise in the medical markets that we intend to 
target. Any failure or delay in the development of our internal sales, marketing and distribution capabilities would 
adversely impact the commercialization of ensifentrine.

To the extent that we enter into collaboration agreements with respect to marketing, sales or distribution, our product 
revenue may be lower than if we directly marketed or sold ensifentrine, if approved. In addition, any revenue we 
receive  will  depend  in  whole  or  in  part  upon  the  efforts  of  these  third-party  collaborators,  which  may  not  be 
successful and are generally not within our control. If we are unable to enter into these arrangements on acceptable 
terms  or  at  all,  we  may  not  be  able  to  successfully  commercialize  ensifentrine.  If  we  are  not  successful  in 
commercializing ensifentrine, either on our own or through collaborations with one or more third parties, our future 
product revenue will suffer and we may incur significant additional losses.

Risks Related to Our Dependence on Third Parties

We rely, and expect to continue to rely, on third parties, including independent clinical investigators and CROs, 
to  conduct  our  pre-clinical  studies  and  clinical  trials.  If  these  third  parties  do  not  successfully  carry  out  their 
contractual  duties  or  meet  expected  deadlines,  we  may  not  be  able  to  obtain  regulatory  approval  for  or 
commercialize ensifentrine and our business could be substantially harmed.

We have relied upon and plan to continue to rely upon third parties, including independent clinical investigators and 
CROs, to conduct our pre-clinical studies and clinical trials and to monitor and manage data for our ongoing pre-
clinical and clinical programs. We rely on these parties for execution of our pre-clinical studies and clinical trials, 
and  control  only  certain  aspects  of  their  activities.  Nevertheless,  we  are  responsible  for  ensuring  that  each  of  our 
studies  and  trials  is  conducted  in  accordance  with  the  applicable  protocol  and  legal,  regulatory  and  scientific 
standards, and our reliance on these third parties does not relieve us of our regulatory responsibilities. We and our 
third-party  contractors  and  CROs  are  required  to  comply  with  GCP  requirements,  which  are  regulations  and 
guidelines  enforced  by  the  FDA,  and  comparable  foreign  regulatory  authorities  for  all  of  our  products  in  clinical 
development. Regulatory authorities enforce these GCP requirements through periodic inspections of trial sponsors, 
principal investigators and trial sites. If we fail to exercise adequate oversight over any of our CROs or if we or any 
of our CROs fail to comply with applicable GCP requirements, the clinical data generated in our clinical trials may 
be deemed unreliable and the FDA, the EMA or comparable foreign regulatory authorities may require us to perform 
additional  clinical  trials  before  approving  our  marketing  applications.  We  cannot  provide  assurance  that  upon  a 
regulatory inspection of us or our CROs or other third parties performing services in connection with our clinical 
trials,  such  regulatory  authority  will  determine  that  any  of  our  clinical  trials  complies  with  GCP  regulations.  In 
addition,  our  clinical  trials  must  be  conducted  with  product  produced  under  applicable  cGMP  and  similar  foreign 
regulations. Our failure to comply with these regulations may require us to repeat clinical trials, which would delay 
the regulatory approval process.

Further,  these  investigators  and  CROs  are  not  our  employees  and  we  will  not  be  able  to  control,  other  than  by 
contract,  the  amount  of  resources,  including  time,  which  they  devote  to  ensifentrine  and  clinical  trials.  If 
independent investigators or CROs fail to devote sufficient resources to the development of ensifentrine, or if their 
performance  is  substandard,  it  may  delay  or  compromise  the  prospects  for  approval  and  commercialization  of 
ensifentrine. In addition, the use of third-party service providers requires us to disclose our proprietary information 
to these parties, which could increase the risk that this information will be misappropriated.

Our existing and future CROs have or may have the right to terminate their agreements with us in the event of an 
uncured  material  breach.  In  addition,  some  of  our  CROs  have  an  ability  to  terminate  their  respective  agreements 
with us if it can be reasonably demonstrated that the safety of the subjects participating in our clinical trials warrants 
such termination, if we make a general assignment for the benefit of our creditors or if we are liquidated.

60

If  any  of  our  relationships  with  these  third-party  CROs  terminate,  we  may  not  be  able  to  enter  into  arrangements 
with alternative CROs or to do so on commercially reasonable terms. Switching or adding CROs involves additional 
cost and requires management’s time and focus. In addition, there is a natural transition period when a new CRO 
commences  work.  As  a  result,  delays  could  occur,  which  could  materially  impact  our  ability  to  meet  our  desired 
clinical  development  timelines.  In  addition,  if  our  CROs  do  not  successfully  carry  out  their  contractual  duties  or 
obligations or meet expected deadlines, or if the quality or accuracy of the clinical data they obtain is compromised 
due to the failure to adhere to our clinical protocols, regulatory requirements or for other reasons, our clinical trials 
may be extended, delayed or terminated and we may not be able to obtain regulatory approval for, or commercialize, 
ensifentrine. As a result, our results of operations and the commercial prospects for ensifentrine would be harmed, 
our costs could increase and our ability to generate revenues could be delayed.

The collaboration and license agreement with Nuance Pharma is important to our business. If Nuance Pharma is 
unable  to  develop  and  commercialize  products  containing  ensifentrine  in  Greater  China,  if  we  or  Nuance 
Pharma  fail  to  adequately  perform  under  the  Nuance  Agreement,  or  if  we  or  Nuance  Pharma  terminate  the 
Nuance Agreement, our business would be adversely affected.

We  entered  into  a  collaboration  and  license  agreement  with  Nuance  Pharma  effective  June  9,  2021  (the  “Nuance 
Agreement”) under which we granted Nuance Pharma the exclusive rights to develop and commercialize products 
containing  ensifentrine  (the  “Nuance  Licensed  Products”)  in  Greater  China  (China,  Taiwan,  Hong  Kong  and 
Macau).

The  Nuance  Agreement  will  continue  on  a  jurisdiction-by-jurisdiction  and  product-by-product  basis  until  the 
expiration of royalty payment obligations with respect to such product in such jurisdiction unless earlier terminated 
by the parties. Either party may terminate the Nuance Agreement for an uncured material breach or bankruptcy of 
the other party. Nuance Pharma may also terminate the Nuance Agreement at will upon 90 days' prior written notice.

Termination of the Nuance Agreement could cause significant setbacks in our ability to develop and commercialize 
the Nuance Licensed Products in Greater China. Any suitable alternative collaboration or license agreement would 
take considerable time to negotiate and could also be on less favorable terms to us. In addition, under the Nuance 
Agreement, Nuance Pharma agreed to assume all costs related to clinical development and commercialization of the 
Nuance Licensed Products in Greater China. If the Nuance Agreement were to be terminated, and whether or not we 
identify another suitable collaborator, we may need to seek additional financing to support the clinical development 
and  commercialization  of  the  Nuance  Licensed  Products  in  Greater  China,  which  could  have  a  material  adverse 
effect on our business.

Under the Nuance Agreement, we are dependent upon Nuance Pharma to successfully develop and commercialize 
Nuance  Licensed  Products.  Although  we  have  formed  a  joint  steering  committee  with  Nuance  Pharma  to  oversee 
and  coordinate  the  overall  conduct  of  the  clinical  development  and  commercialization  of  the  Nuance  Licensed 
Products in Greater China, we do not control all aspects of Nuance Pharma’s development and commercialization or 
the  resources  it  allocates  to  the  development  of  the  Nuance  Licensed  Products  identified  under  the  Nuance 
Agreement.  Our  interests  and  Nuance  Pharma’s  interests  may  differ  or  conflict  from  time  to  time,  or  we  may 
disagree  with  Nuance  Pharma’s  level  of  effort  or  resource  allocation.  Nuance  Pharma  may  internally  prioritize 
programs  under  development  within  the  collaboration  differently  than  we  would,  or  it  may  not  allocate  sufficient 
resources to effectively or optimally develop or commercialize the Nuance Licensed Products. If these events were 
to  occur,  our  ability  to  receive  revenue  from  the  commercialization  of  the  Nuance  Licensed  Products  would  be 
reduced, and our business would be adversely affected.

If we fail to enter into new strategic relationships for ensifentrine, our business, research and development and 
commercialization prospects could be adversely affected.

Our  development  program  for  ensifentrine  and  the  potential  commercialization  of  ensifentrine  will  require 
substantial  additional  cash  to  fund  expenses.  Therefore,  we  may  decide  to  enter  into  collaborations  with 
pharmaceutical  or  biopharmaceutical  companies  for  the  development  and  potential  commercialization  of 
ensifentrine.  For  example,  we  may  seek  a  collaborator  for  development  of  our  DPI  or  pMDI  formulation  of 
ensifentrine for the maintenance treatment of COPD and potentially asthma and other respiratory diseases.

We  face  significant  competition  in  seeking  appropriate  collaborators.  Collaborations  are  complex  and  time 
consuming to negotiate and document. We may also be restricted under existing and future collaboration agreements 
from entering into agreements on certain terms with other potential collaborators. We may not be able to negotiate 
collaborations  on  acceptable  terms,  or  at  all.  If  that  were  to  occur,  we  may  have  to  curtail  the  development  of 
ensifentrine, reduce or delay its development program, delay its potential commercialization or reduce the scope of 
our  sales  or  marketing  activities,  or  increase  our  expenditures  and  undertake  development  or  commercialization 

61

activities  at  our  own  expense.  If  we  elect  to  increase  our  expenditures  to  fund  development  or  commercialization 
activities  on  our  own,  we  may  need  to  obtain  additional  capital,  which  may  not  be  available  to  us  on  acceptable 
terms or at all. If we do not have sufficient funds, we will not be able to bring ensifentrine to market and generate 
product revenue. If we do enter into a collaboration agreement, we could be subject to the following risks, among 
others, any of which could adversely affect our ability to develop and commercialize ensifentrine:

•

•

•

•

•

•

•

•

•

•

we  may  not  be  able  to  control  the  amount  and  timing  of  resources  that  the  collaborator  devotes  to  the 
development of ensifentrine;

the collaborator may experience financial difficulties;

we  may  be  required  to  relinquish  important  rights  such  as  marketing,  distribution  and  intellectual  property 
rights;

a collaborator could move forward with a competing product developed either independently or in collaboration 
with third parties, including our competitors;

safety and/or efficacy data from a collaborator’s clinical development activities may conflict with our data and 
could potentially impact our global clinical development activities;

a collaborator may unlawfully use or disclose confidential information and materials in breach of confidentiality 
obligations to us;

business  combinations  or  significant  changes  in  a  collaborator’s  business  strategy  may  adversely  affect  our 
willingness to complete our obligations under any arrangement;

we or a collaborator could fail to adequately perform our obligations under the agreement and/or the agreement 
could fall into dispute;

we may be involved in lawsuits to protect or enforce patents covering ensifentrine, or relating to the terms of 
our collaborations, which could be expensive, time consuming and unsuccessful; or

the collaboration may not provide sufficient funds to be profitable for us after we fulfill our payment liabilities 
under  our  agreement  with  Ligand  Pharmaceuticals,  Inc.,  or  Ligand,  which  acquired  Vernalis  Development 
Limited, or Vernalis, in October 2018.

We  currently  rely  on  third-party  manufacturers  and  suppliers  for  production  of  the  active  pharmaceutical 
ingredient  ensifentrine  and  its  derived  formulated  products.  Our  dependence  on  these  third  parties  may  impair 
the advancement of our research and development programs and the development of ensifentrine. Moreover, we 
intend to rely on third parties to produce commercial supplies of ensifentrine, if approved, and commercialization 
could be stopped, delayed or made less profitable if those third parties fail to obtain the necessary approvals from 
the FDA or comparable regulatory authorities, fail to provide us with sufficient quantities of product in a timely 
manner  or  fail  to  do  so  at  acceptable  quality  levels  or  prices  or  fail  to  otherwise  complete  their  duties  in 
compliance with their obligations to us or other parties.

We  have  limited  personnel  with  experience  in  manufacturing,  and  we  do  not  own  facilities  for  manufacturing 
ensifentrine and its derived formulated products. Instead, we rely on and expect to continue to rely on third-party 
contract manufacturing organizations (“CMOs”), for the supply of cGMP- or GMP-grade clinical trial materials and 
commercial quantities of ensifentrine and its derived formulated products, if approved. While we may contract with 
other CMOs in the future, we currently have one CMO for the manufacture of ensifentrine drug substance and one 
CMO for each formulation of ensifentrine. The facilities used to manufacture ensifentrine and its derived formulated 
products must be approved by the FDA pursuant to inspections that will be conducted after we submit an NDA to 
the  FDA,  and  by  comparable  foreign  regulatory  authorities  for  approvals  outside  the  United  States.  While  we 
provide  sponsor  oversight  of  manufacturing  activities,  we  do  not  and  will  not  directly  control  the  manufacturing 
process of, and are or will be essentially dependent on, our CMOs for compliance with cGMP and similar foreign 
requirements for the manufacture of ensifentrine and its derived formulated products. If a CMO cannot successfully 
manufacture  material  that  conforms  to  our  specifications  and  the  regulatory  requirements  of  the  FDA  or  a 
comparable  foreign  regulatory  authority,  it  will  not  be  able  to  secure  or  maintain  regulatory  approval  for  the 
manufacture of ensifentrine and its derived formulated products in its manufacturing facilities. In addition, we have 
little direct control over the ability of a CMO to maintain adequate quality control, quality assurance and qualified 
personnel.  If  the  FDA  or  a  comparable  foreign  regulatory  authority  does  not  approve  these  facilities  for  the 
manufacture of ensifentrine and its derived formulated products or if it withdraws any such approval in the future, 
we  may  need  to  find  alternative  manufacturing  facilities,  which  would  delay  our  development  program  and 
significantly  impact  our  ability  to  develop,  obtain  regulatory  approval  for  or  market  ensifentrine  and  its  derived 

62

formulated  products,  if  approved.  In  addition,  any  failure  to  achieve  and  maintain  compliance  with  these  laws, 
regulations and standards could subject us to the risk that we may have to suspend the manufacture of ensifentrine 
and its derived formulated products or that obtained approvals could be revoked. Furthermore, third-party providers 
may breach existing agreements they have with us because of factors beyond our control. They may also terminate 
or refuse to renew their agreement because of their own financial difficulties or business priorities, at a time that is 
costly  or  otherwise  inconvenient  for  us.  If  we  were  unable  to  find  an  adequate  replacement  or  another  acceptable 
solution in time, our clinical trials could be delayed or our commercial activities could be harmed. In addition, the 
fact  that  we  are  dependent  on  our  suppliers,  CMOs  and  other  third  parties  for  the  manufacture,  storage  and 
distribution of ensifentrine and its derived formulated products means that we are subject to the risk that ensifentrine 
and its derived formulated products may have manufacturing defects that we have limited ability to prevent, detect 
or control.

We  rely  on  and  will  continue  to  rely  on  CMOs  to  purchase  from  third-party  suppliers  the  materials  necessary  to 
produce  ensifentrine  and  its  derived  formulated  products  and  the  inhalation  and  nebulization  devices  to  deliver 
ensifentrine.  We  do  not  and  will  not  have  any  direct  control  over  the  process  or  timing  of  the  acquisition  and 
delivery of these supplies by any CMO or its third-party suppliers, or the quality or quantity of such supplies. These 
supplies  could  be  interrupted  from  time  to  time  and,  if  interrupted,  we  cannot  be  certain  that  alternative  supplies 
could  be  obtained  within  a  reasonable  timeframe,  at  an  acceptable  cost  or  quality,  or  at  all.  There  are  a  limited 
number  of  suppliers  for  the  raw  materials  that  we  may  use  to  manufacture  ensifentrine  and  for  the  drug  delivery 
devices  (e.g.  nebulizers)  that  we  use  for  clinical  trials  with  ensifentrine,  and  we  will  need  to  assess  alternate 
suppliers  to  prevent  a  possible  disruption  to  our  clinical  trials,  and  if  approved,  ultimately  to  commercial  sales. 
Although we generally do not begin a clinical trial unless we believe we have on hand, or will be able to obtain, a 
sufficient supply of ensifentrine to complete the clinical trial, any significant delay in the supply of ensifentrine drug 
products,  or  the  raw  material  components  needed  to  produce,  or  devices  needed  to  deliver,  ensifentrine,  for  an 
ongoing  clinical  trial  due  to  our  CMOs  or  their  third-party  suppliers  could  considerably  delay  completion  of  our 
clinical  trials,  product  testing  and  potential  regulatory  approval  of  ensifentrine.  If  our  CMOs,  their  third-party 
supplies, or we are unable to purchase these supplies after regulatory approval has been obtained for ensifentrine, the 
commercial launch of ensifentrine would be delayed or there would be a shortage in supply, which would impair our 
ability  to  generate  revenues  from  the  sale  of  ensifentrine.  In  addition,  growth  in  the  costs  and  expenses  of  these 
supplies may impair our ability to cost-effectively manufacture ensifentrine. Additionally, CMOs are experiencing 
labor constraints which could impact their ability to manufacture and deliver ensifentrine.

We  rely  and  will  continue  to  rely  on  CMOs  and  third-party  suppliers  to  comply  with  and  respect  the  proprietary 
rights of others in conducting their contractual obligations for us. If a CMO or third-party suppliers fails to acquire 
the proper licenses or otherwise infringes third-party proprietary rights in the course of providing services to us, we 
may  have  to  find  alternative  CMOs  or  third-party  suppliers,  or  defend  against  claims  of  infringement,  either  of 
which would significantly impact our ability to develop, obtain regulatory approval for, or market ensifentrine and 
any of its derived formulated products, if approved.

Risks Related to Intellectual Property and Information Technology

We  rely  on  patents  and  other  intellectual  property  rights  to  protect  ensifentrine,  the  enforcement,  defense  and 
maintenance of which may be challenging and costly. Failure to enforce or protect these rights adequately could 
harm our ability to compete and impair our business.

Our  commercial  success  depends  in  part  on  obtaining  and  maintaining  patents  and  other  forms  of  intellectual 
property rights for ensifentrine, formulations of ensifentrine, polymorphs, salts and analogs of ensifentrine, methods 
used to manufacture ensifentrine, methods for manufacturing of final drug product for different inhalation devices 
such  as  nebulizer,  DPI,  pMDI,  and  the  methods  for  treating  patients  with  respiratory  diseases  using  ensifentrine 
alone  or  in  combination  with  other  available  products,  or  on  in-licensing  such  rights.  The  registrations  of  the 
assignment of each of these patents and patent applications with the relevant authorities in certain jurisdictions in 
which  the  patent  and  patent  applications  are  registered  have  been  granted,  but  there  is  no  assurance  that  any 
additional  registrations  will  be  effected  in  a  timely  manner  or  at  all.  Failure  to  protect  or  to  obtain,  maintain  or 
extend adequate patent and other intellectual property rights could adversely affect our ability to develop and market 
ensifentrine.

The patent prosecution process is expensive and time-consuming, and we or our licensors, licensees or collaborators 
may not be able to prepare, file and prosecute all necessary or desirable patent applications at a reasonable cost or in 
a timely manner or in all jurisdictions. It is also possible that we or our licensors, licensees or collaborators will fail 
to  identify  patentable  aspects  of  inventions  made  in  the  course  of  development  and  commercialization  activities 

63

before it is too late to obtain patent protection on them. Moreover, depending on the terms of any future in-licenses 
to which we may become a party, in some circumstances we may not have the right to control the preparation, filing 
and prosecution of patent applications, or to maintain the patents, covering technology in-licensed from third parties. 
Therefore, these patents and applications may not be prosecuted and enforced in a manner consistent with the best 
interests of our business. Further, the issuance, scope, validity, enforceability and commercial value of our and our 
current  or  future  licensors’,  licensees’  or  collaborators’  patent  rights  are  highly  uncertain.  Our  and  our  licensors’ 
pending  and  future  patent  applications  may  not  result  in  patents  being  issued  which  protect  our  technology  or 
products,  in  whole  or  in  part,  or  which  effectively  prevent  others  from  commercializing  competitive  technologies 
and products. The patent examination process may require us or our licensors, licensees or collaborators to narrow 
the scope of the claims of our or our licensors’, licensees’ or collaborators’ pending and future patent applications, 
which may limit the scope of patent protection that may be obtained. We cannot provide assurance that all of the 
potentially relevant prior art relating to our patents and patent applications has been found. If such prior art exists, it 
can  invalidate  a  patent  or  prevent  a  patent  from  issuing  from  a  pending  patent  application.  Even  if  patents  do 
successfully issue and even if such patents cover ensifentrine, third parties may initiate an opposition, interference, 
re-examination,  post-grant  review,  inter  partes  review,  nullification  or  derivation  action  in  court  or  before  patent 
offices, or similar proceedings challenging the validity, enforceability or scope of such patents, which may result in 
the  patent  claims  being  narrowed  or  invalidated.  Our  and  our  licensors’,  licensees’  or  collaborators’  patent 
applications cannot be enforced against third parties practicing the technology claimed in such applications unless 
and until a patent issues from such applications, and then only to the extent the issued claims cover the technology.

Because patent applications are confidential for a period of time after filing, and some remain so until issued, we 
cannot  be  certain  that  we  or  our  licensors  were  the  first  to  file  any  patent  application  related  to  ensifentrine. 
Furthermore, if third parties have filed such patent applications on or before March 15, 2013, the date on which the 
U.S. patent filing system changed from a first-to-invent to a first-to-file standard, an interference proceeding can be 
initiated by such third parties to determine who was the first to invent any of the subject matter covered by the patent 
claims of our applications. If third parties have filed such applications after March 15, 2013, a derivation proceeding 
can be initiated by such third parties to determine whether our invention was derived from theirs. Even where we 
have a valid and enforceable patent, we may not be able to exclude others from practicing our invention where the 
other party can show that they used the invention in commerce before our filing date or the other party benefits from 
a compulsory license.

We may not identify relevant third-party patents or may incorrectly interpret the relevance, scope or expiration of 
a third-party patent which might adversely affect our ability to develop, manufacture and market ensifentrine.

We cannot guarantee that any of our or our licensors’ patent searches or analyses, including but not limited to the 
identification  of  relevant  patents,  the  scope  of  patent  claims  or  the  expiration  of  relevant  patents,  are  complete  or 
thorough, nor can we be certain that we have identified each and every third-party patent and pending application in 
the  United  States  and  abroad  that  is  relevant  to  or  necessary  for  the  commercialization  of  ensifentrine  in  any 
jurisdiction. For example, U.S. applications filed before November 29, 2000 and certain U.S. applications filed after 
that date that will not be filed outside the United States remain confidential until patents issue. Patent applications in 
the United States and elsewhere 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. Therefore, patent applications 
covering  ensifentrine  could  have  been  filed  by  others  without  our  knowledge.  Additionally,  pending  patent 
applications  that  have  been  published  can,  subject  to  certain  limitations,  be  later  amended  in  a  manner  that  could 
cover ensifentrine or the use of ensifentrine. The scope of a patent claim is determined by an interpretation of the 
law, the written disclosure in a patent and the patent’s prosecution history. Our interpretation of the relevance or the 
scope  of  a  patent  or  a  pending  application  may  be  incorrect,  which  may  negatively  impact  our  ability  to  market 
ensifentrine. We may incorrectly determine that ensifentrine is not covered by a third-party patent or may incorrectly 
predict whether a third party’s pending application will issue with claims of relevant scope. Our determination of the 
expiration date of any patent in the United States or abroad that we consider relevant may be incorrect, which may 
negatively  impact  our  ability  to  develop  and  market  ensifentrine.  Our  failure  to  identify  and  correctly  interpret 
relevant patents may negatively impact our ability to develop and market ensifentrine.

If we fail to identify and correctly interpret relevant patents, we may be subject to infringement claims. We cannot 
guarantee that we will be able to successfully settle or otherwise resolve such infringement claims. If we fail in any 
such dispute, in addition to being forced to pay damages, we may be temporarily or permanently prohibited from 
commercializing  ensifentrine.  We  might,  if  possible,  also  be  forced  to  redesign  ensifentrine  so  that  we  no  longer 
infringe the third-party intellectual property rights. Any of these events, even if we were ultimately to prevail, could 
require us to divert substantial financial and management resources that we would otherwise be able to devote to our 
business.

64

We  may  be  involved  in  lawsuits  to  protect  or  enforce  patents  covering  ensifentrine,  which  could  be  expensive, 
time consuming and unsuccessful, and issued patents could be found invalid or unenforceable if challenged in 
court.

To  protect  our  competitive  position,  we  may  from  time  to  time  need  to  resort  to  litigation  in  order  to  enforce  or 
defend any patents or other intellectual property rights owned by or licensed to us, or to determine or challenge the 
scope  or  validity  of  patents  or  other  intellectual  property  rights  of  third  parties.  As  enforcement  of  intellectual 
property rights is difficult, unpredictable, time consuming and expensive, we may fail in enforcing our rights — in 
which case our competitors may be permitted to use our technology without being required to pay us any license 
fees. In addition, however, litigation involving our patents carries the risk that one or more of our patents will be 
held  invalid  (in  whole  or  in  part,  on  a  claim-by-claim  basis)  or  held  unenforceable.  Such  an  adverse  court  ruling 
could allow third parties to commercialize ensifentrine, and then compete directly with us, without payment to us. If 
we in-license intellectual property rights, our agreements may give our licensors the first right to control claims of 
third-party infringement, or to defend validity challenges. Therefore, these patents and patent applications may not 
be enforced or defended in a manner consistent with the best interests of our business.

If we were to initiate legal proceedings against a third party to enforce a patent covering one of our products, the 
defendant could counterclaim that our patent is invalid or unenforceable. In patent litigation in the United States or 
in Europe, defendant counterclaims alleging invalidity 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 relevant information from the U.S. Patent and Trademark Office, 
or  USPTO,  or  made  a  misleading  statement,  during  prosecution.  The  outcome  following  legal  assertions  of 
invalidity  and  unenforceability  during  patent  litigation  is  unpredictable.  With  respect  to  the  validity  question,  for 
example,  we  cannot  be  certain  that  there  is  no  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 or unenforceability, we 
would  lose  at  least  part,  and  perhaps  all,  of  the  patent  protection  on  ensifentrine.  Patents  and  other  intellectual 
property rights also will not protect our technology if competitors design around our protected technology without 
infringing our patents or other intellectual property rights.

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.  There  could  also  be  public  announcements  of  the  results  of  hearings,  motions  or  other  interim 
proceedings or developments. If securities analysts, industry commentators or investors perceive these results to be 
negative, it could have an adverse effect on the price of our ADSs.

Third parties may initiate legal proceedings alleging that we are infringing their intellectual property rights, the 
outcome of which would be uncertain and could have a negative impact on the success of our business.

Our commercial success depends, in part, upon our ability, and the ability of our future collaborators, to develop, 
manufacture,  market  and  sell  our  product  candidates  without  alleged  or  actual  infringement,  misappropriation  or 
other  violation  of  the  patents  and  proprietary  rights  of  third  parties.  There  have  been  many  lawsuits  and  other 
proceedings  involving  patent  and  other  intellectual  property  rights  in  the  biotechnology  and  pharmaceutical 
industries, including patent infringement lawsuits, interferences, oppositions and reexamination proceedings before 
the USPTO and corresponding foreign patent offices. The various markets in which we plan to operate are subject to 
frequent  and  extensive  litigation  regarding  patents  and  other  intellectual  property  rights.  In  addition,  many 
companies  in  intellectual  property-dependent  industries,  including  the  biopharmaceutical  and  pharmaceutical 
industries,  have  employed  intellectual  property  litigation  as  a  means  to  gain  an  advantage  over  their  competitors. 
Numerous U.S. and foreign issued patents and pending patent applications, which are owned by third parties, exist 
in the fields in which we are developing ensifentrine. Some claimants may have substantially greater resources than 
we  do  and  may  be  able  to  sustain  the  costs  of  complex  intellectual  property  litigation  to  a  greater  degree  and  for 
longer periods of time than we could. In addition, patent holding companies that focus solely on extracting royalties 
and settlements by enforcing patent rights may target us. As the biotechnology and pharmaceutical industries expand 
and  more  patents  are  issued,  the  risk  increases  that  ensifentrine  may  be  subject  to  claims  of  infringement  of  the 
intellectual property rights of third parties.

We  may  in  the  future  become  party  to,  or  be  threatened  with,  adversarial  proceedings  or  litigation  regarding 
intellectual property rights with respect to ensifentrine and any future product candidates, including interference or 
derivation  proceedings,  post  grant  review  and  inter  partes  review  before  the  USPTO  or  similar  adversarial 
proceedings  or  litigation  in  other  jurisdictions.  Similarly,  we  or  our  licensors  or  collaborators  may  initiate  such 
proceedings or litigation against third parties, for example, to challenge the validity or scope of intellectual property 

65

rights controlled by third parties. Third parties may assert infringement claims against us based on existing patents 
or patents that may be granted in the future, regardless of their merit. There is a risk that third parties may choose to 
engage in litigation with us to enforce or to otherwise assert their patent rights against us. Even if we believe such 
claims  are  without  merit,  a  court  of  competent  jurisdiction  could  hold  that  these  third-party  patents  are  valid, 
enforceable  and  infringed,  and  the  holders  of  any  such  patents  may  be  able  to  block  our  ability  to  commercialize 
such product candidate unless we obtained a license under the applicable patents, or until such patents expire or are 
finally  determined  to  be  invalid  or  unenforceable.  Similarly,  if  any  third-party  patents  were  held  by  a  court  of 
competent  jurisdiction  to  cover  aspects  of  our  compositions,  formulations,  or  methods  of  treatment,  prevention  or 
use, the holders of any such patents may be able to block our ability to develop and commercialize the applicable 
product candidate unless we obtained a license or until such patent expires or is finally determined to be invalid or 
unenforceable. Such licenses may not be available on reasonable terms, or at all, or may be non-exclusive thereby 
giving our competitors access to the same technologies licensed to us.

If we fail in any such dispute, we may be forced to pay damages, including the possibility of treble damages in a 
patent case if a court finds us to have willfully infringed certain intellectual property rights. We or our licensees may 
be  temporarily  or  permanently  prohibited  from  commercializing  ensifentrine  or  from  selling,  incorporating, 
manufacturing or using our products in the United States and/or other jurisdictions that use the subject intellectual 
property. We might, if possible, also be forced to redesign ensifentrine so that we no longer infringe the third-party 
intellectual  property  rights,  which  may  result  in  significant  cost  or  delay  to  us,  or  which  redesign  could  be 
technically  infeasible.  Any  of  these  events,  even  if  we  were  ultimately  to  prevail,  could  require  us  to  divert 
substantial financial and management resources that we would otherwise be able to devote to our business.

In addition, if the breadth or strength of protection provided by our or our licensors’ or collaborators’ patents and 
patent  applications  is  threatened,  it  could  dissuade  companies  from  collaborating  with  us  to  license,  develop  or 
commercialize current or future product candidates.

We may be subject to claims challenging the inventorship of our patents and other intellectual property.

Although we are not currently experiencing any claims challenging the inventorship of our patents or ownership of 
our  intellectual  property,  we  may  in  the  future  be  subject  to  claims  that  former  employees,  collaborators  or  other 
third parties have an interest in our patents or other intellectual property as an inventor or co-inventor. While it is our 
policy  to  require  our  employees  and  contractors  who  may  be  involved  in  the  conception  or  development  of 
intellectual  property  to  execute  agreements  assigning  such  intellectual  property  to  us,  we  may  be  unsuccessful  in 
executing such an agreement with each party who, in fact, conceives or develops intellectual property that we regard 
as our own. For example, the assignment of intellectual property rights may not be self-executing or the assignment 
agreements may be breached, or we may have inventorship disputes arise from conflicting obligations of consultants 
or  others  who  are  involved  in  developing  our  product  candidates.  Litigation  may  be  necessary  to  defend  against 
these  and  other  claims  challenging  inventorship.  If  we  fail  in  defending  any  such  claims,  in  addition  to  paying 
monetary damages, we may lose valuable intellectual property rights, such as exclusive ownership of, or right to use, 
valuable intellectual property. Even if we are successful in defending against such claims, litigation could result in 
substantial costs and be a distraction to management and other employees.

Intellectual  property  litigation  could  cause  us  to  spend  substantial  resources  and  distract  our  personnel  from 
their normal responsibilities.

Even if resolved in our favor, litigation or other legal proceedings relating to intellectual property claims may cause 
us  to  incur  significant  expenses  and  could  distract  our  technical  and  management  personnel  from  their  normal 
responsibilities. In addition, there could be public announcements of the results of hearings, motions or other interim 
proceedings  or  developments  and  if  securities  analysts  or  investors  perceive  these  results  to  be  negative,  such 
perceptions could have a substantial adverse effect on the price of our ADSs. Such litigation or proceedings could 
substantially increase our operating losses and reduce our resources available for development activities. We may 
not  have  sufficient  financial  or  other  resources  to  adequately  conduct  such  litigation  or  proceedings.  Some  of  our 
competitors may be able to sustain the costs of such litigation or proceedings more effectively than we can because 
of their substantially greater financial resources. Uncertainties resulting from the initiation and continuation of patent 
litigation or other proceedings could have an adverse effect on our ability to compete in the marketplace.

If  we  fail  to  comply  with  our  obligations  under  our  existing  and  any  future  intellectual  property  licenses  with 
third parties, we could lose license rights that are important to our business.

We are party to a license agreement with Ligand, under which we in-license certain intellectual property and were 
assigned  certain  patents  and  patent  applications  related  to  our  business.  We  may  enter  into  additional  license 
agreements in the future. We expect that any future license agreements would impose various diligence, milestone 

66

payment,  royalty,  insurance  and  other  obligations  on  us.  Any  uncured,  material  breach  under  these  license 
agreements could result in our loss of rights to practice the patent rights and other intellectual property licensed to us 
under these agreements, and could compromise our development and commercialization efforts for ensifentrine or 
any future product candidates. Under our agreement with Ligand, we may not abandon any of the assigned patents 
or allow any of the assigned patents to lapse without consent from Ligand, which is not to be unreasonably delayed 
or withheld. If we do not obtain such consent in a timely manner or at all and such assigned patent rights lapse or are 
abandoned, our agreement with Ligand may be terminated in its entirety. For example, if we decide for commercial 
reasons  to  let  an  assigned  patent  lapse  in  a  country  of  little  commercial  importance,  but  Ligand  does  not  provide 
consent and such patent rights lapse, we may lose all intellectual property rights covering ensifentrine in multiple 
markets.  Moreover,  our  future  licensors  may  own  or  control  intellectual  property  that  has  not  been  licensed  to  us 
and, as a result, we may be subject to claims, regardless of their merit, that we are infringing or otherwise violating 
the licensor’s rights.

We  may  not  be  successful  in  maintaining  the  necessary  rights  to  ensifentrine  or  obtaining  other  intellectual 
property rights important to our business through acquisitions and in-licenses.

We  currently  own  and  have  in-licensed  rights  to  intellectual  property,  including  patents,  patent  applications  and 
know-how,  relating  to  ensifentrine,  and  our  success  will  likely  depend  on  maintaining  these  rights.  Because  our 
programs  may  require  the  use  of  proprietary  rights  held  by  third  parties,  the  growth  of  our  business  will  likely 
depend in part on our ability to acquire, in-license, maintain or use these proprietary rights. In addition, ensifentrine 
may require specific formulations to work effectively and the rights to these formulations may be held by others. We 
may be unable to acquire or in-license any compositions, methods of use, processes, or other third-party intellectual 
property rights that we identify as necessary for ensifentrine. The licensing and acquisition of third-party intellectual 
property  rights  is  a  competitive  area,  and  a  number  of  more  established  companies  also  are  pursuing  strategies  to 
license  or  acquire  third-party  intellectual  property  rights  that  we  may  consider  attractive.  These  established 
companies  may  have  a  competitive  advantage  over  us  due  to  their  size,  cash  resources  and  greater  clinical 
development and commercialization capabilities.

In addition, companies that perceive us to be a competitor may be unwilling to assign or license rights to us. We 
may  also  be  unable  to  license  or  acquire  third-party  intellectual  property  rights  on  a  timely  basis,  on  terms  that 
would allow us to make an appropriate return on our investment, or at all. Even if we are able to obtain a license to 
intellectual property of interest, we may not be able to secure exclusive rights, in which case others could use the 
same rights and compete with us. If we are unable to successfully obtain a license to third-party intellectual property 
rights necessary for the development of ensifentrine or a development program on acceptable terms, we may have to 
abandon development of ensifentrine or that development program.

If  our  trademarks  and  trade  names  are  not  adequately  protected,  then  we  may  not  be  able  to  build  name 
recognition in our markets of interest and our competitive position may be adversely affected.

We  have  registered  trademarks  in  some  territories  and  made  applications  to  register  the  trademarks  in  other 
territories  for  potential  trade  names  for  our  business  and  proposed  drug  products.  We  may  not  be  able  to  obtain 
trademark protection for our trade names in territories that we consider of significant importance to us. If we register 
trademarks, our trademark applications may be rejected during trademark registration proceedings. Although we will 
be given an opportunity to respond to those rejections, we may be unable to overcome such rejections. In addition, 
any of our trademarks or trade names, whether registered or unregistered, may be challenged, opposed, infringed, 
cancelled, circumvented or declared generic or determined to be infringing on other marks. We may not be able to 
protect  our  rights  to  these  trademarks  and  trade  names,  which  we  need  to  build  name  recognition  by  potential 
collaborators  or  customers  in  our  markets  of  interest.  Over  the  long-term,  if  we  are  unable  to  establish  name 
recognition  based  on  our  trademarks  and  trade  names,  then  we  may  not  be  able  to  compete  effectively  and  our 
business may be adversely affected. If other entities use trademarks similar to ours in different jurisdictions, or have 
senior rights to ours, it could interfere with our use of our current trademarks throughout the world.

If  we  do  not  obtain  protection  under  the  Hatch-Waxman  Amendments  and  similar  non-U.S.  legislation  for 
extending  the  term  of  patents  covering  ensifentrine  and  any  other  product  candidates,  our  ability  to  compete 
effectively could be impaired.

Patents have a limited lifespan. In the United States, if all maintenance fees are timely paid, the natural expiration of 
a  patent  is  generally  20  years  from  its  earliest  U.S.  non-provisional  filing  date.  The  issued  patents  covering  the 
composition  of  matter  for  ensifentrine  expired  in  2020,  and  our  other  issued  patents  will  expire  in  2031  to  2041, 
subject to any patent extensions that may be available for such patents. If patents are issued on our pending patent 
applications, the resulting patents are projected to expire on dates ranging from 2031 to 2036. Various extensions 
may  be  available,  but  the  life  of  a  patent,  and  the  protection  it  affords,  is  limited.  Even  if  patents  covering 

67

ensifentrine  are  obtained,  once  the  patent  life  has  expired  for  a  product,  we  may  be  open  to  competition  from 
competitive  medications,  including  generic  medications.  Given  the  amount  of  time  required  for  the  development, 
testing and regulatory review of new product candidates, patents protecting such candidates might expire before or 
shortly  after  such  candidates  are  commercialized.  As  a  result,  our  owned  and  licensed  patent  portfolio  may  not 
provide us with sufficient rights to exclude others from commercializing products similar or identical to ours.

Depending upon the timing, duration and conditions of the FDA marketing approval of ensifentrine, one or more 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,  referred  to  as  the  Hatch-Waxman  Amendments,  and  similar  legislation  in  the  EU. 
The  Hatch-Waxman  Amendments  permit  a  patent  term  extension  of  up  to  five  years  for  a  patent  covering  an 
approved  product  as  compensation  for  effective  patent  term  lost  during  product  development  and  the  FDA 
regulatory  review  process.  However,  we  may  not  receive  an  extension  if  we  fail  to  apply  within  applicable 
deadlines,  fail  to  apply  prior  to  expiration  of  relevant  patents  or  otherwise  fail  to  satisfy  applicable  requirements. 
Moreover, the length of the extension could be less than we request. If we are unable to obtain patent term extension 
or the term of any such extension is less than we request, the period during which we can enforce our patent rights 
for that product will be shortened and our competitors may obtain approval to market competing products sooner. As 
a result, our revenue from applicable products could be reduced, possibly materially.

We enjoy only limited geographical protection with respect to certain patents and may face difficulties in certain 
jurisdictions, which may diminish the value of our intellectual property rights in those jurisdictions.

We generally file our first patent application, or priority filing, at the United Kingdom Intellectual Property Office. 
International applications under the Patent Cooperation Treaty, or PCT, are usually filed within 12 months after the 
priority  filing.  Based  on  the  PCT  filing,  national  and  regional  patent  applications  may  be  filed  in  additional 
jurisdictions where we believe a product candidate may be marketed or manufactured. We have so far not filed for 
patent protection for ensifentrine in all national and regional jurisdictions where such protection may be available. 
Filing,  prosecuting  and  defending  patents  in  all  countries  throughout  the  world  would  be  prohibitively  expensive, 
and our intellectual property rights in some countries outside the United States can be less extensive than those in 
the United States. In addition, we may decide to abandon national and regional patent applications before grant. The 
grant proceeding of each national or regional patent is an independent proceeding which may lead to situations in 
which applications might in some jurisdictions be refused by the relevant patent offices, while granted by others. For 
example,  unlike  other  countries,  China  has  a  heightened  requirement  for  patentability,  and  specifically  requires  a 
detailed  description  of  medical  uses  of  a  claimed  drug.  Furthermore,  generic  drug  manufacturers  or  other 
competitors may challenge the scope, validity or enforceability of our or our licensors’ patents, requiring us or our 
licensors to engage in complex, lengthy and costly litigation or other proceedings. Generic drug manufacturers may 
develop, seek approval for and launch generic versions of our products. It is also quite common that depending on 
the country, the scope of patent protection may vary for the same product candidate or technology.

Competitors may use our or our licensors’ or collaborators’ 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  or  our  licensors  or  collaborators  have  patent  protection,  but  enforcement  is  not  as  strong  as  that  in  the 
United States. These products may compete with our product candidates, and our and our licensors’ or collaborators’ 
patents or other intellectual property rights may not be effective or sufficient to prevent them from competing.

The laws of some jurisdictions do not protect intellectual property rights to the same extent as the laws or rules and 
regulations  in  the  United  States  and  the  EU,  and  many  companies  have  encountered  significant  difficulties  in 
protecting and defending such rights in such 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, 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,  whether  or  not  successful,  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. Furthermore, 
while we intend to protect our intellectual property rights in our expected significant markets, we cannot ensure that 
we will be able to initiate or maintain similar efforts in all jurisdictions in which we may wish to market our product 
candidates. Accordingly, our efforts to protect our intellectual property rights in such countries may be inadequate, 
which may have an adverse effect on our ability to successfully commercialize our product candidates in all of our 
expected  significant  foreign  markets.  If  we  or  our  licensors  encounter  difficulties  in  protecting,  or  are  otherwise 

68

precluded  from  effectively  protecting,  the  intellectual  property  rights  important  for  our  business  in  such 
jurisdictions,  the  value  of  these  rights  may  be  diminished  and  we  may  face  additional  competition  from  others  in 
those jurisdictions.

Some countries have compulsory licensing laws under which a patent owner may be compelled to grant licenses to 
third  parties.  In  addition,  some  countries  limit  the  enforceability  of  patents  against  government  agencies  or 
government  contractors.  In  these  countries,  the  patent  owner  may  have  limited  remedies,  which  could  materially 
diminish  the  value  of  such  patent.  If  we  or  any  of  our  licensors  is  forced  to  grant  a  license  to  third  parties  with 
respect to any patents relevant to our business, our competitive position may be impaired.

Intellectual property rights do not necessarily address all potential threats to our competitive advantage.

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:

•

•

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

The patents of third parties may impair our ability to develop or commercialize our product candidates.

• We or our licensors or any future strategic collaborators might not have been the first to conceive or reduce to 
practice  the  inventions  covered  by  the  issued  patent  or  pending  patent  application  that  we  own  or  have 
exclusively licensed.

• We or our licensors or any future collaborators might not have been the first to file patent applications covering 

certain of our inventions.

•

•

•

•

•

Others  may  independently  develop  similar  or  alternative  technologies  or  duplicate  any  of  our  technologies 
without infringing our intellectual property rights.

It is possible that our pending patent applications will not lead to issued patents.

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

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.

Third parties performing manufacturing or testing for us using our product candidates or technologies could use 
the intellectual property of others without obtaining a proper license.

• We may not develop additional technologies that are patentable.

Changes in patent laws or patent jurisprudence could diminish the value of patents in general, thereby impairing 
our ability to protect ensifentrine or any future product candidates.

As is the case with other biopharmaceutical companies, our success is heavily dependent on intellectual property, 
particularly  patents.  Obtaining  and  enforcing  patents  in  the  biopharmaceutical  industry  involve  both  technological 
complexity  and  legal  complexity.  Therefore,  obtaining  and  enforcing  biopharmaceutical  patents  is  costly,  time 
consuming  and  inherently  uncertain.  In  addition,  the  America  Invents  Act,  or  the  AIA,  which  was  passed  on 
September 16, 2011, resulted in significant changes to the U.S. patent system.

An important change introduced by the AIA is that, as of March 16, 2013, the United States transitioned to a “first-
to-file” system for deciding which party should be granted a patent when two or more patent applications are filed 
by different parties claiming the same invention. A third party that files a patent application in the USPTO, after that 
date  but  before  us  could  therefore  be  awarded  a  patent  covering  an  invention  of  ours  even  if  we  had  made  the 
invention before it was made by the third party. This requires us to be cognizant of the time from invention to filing 
of  a  patent  application,  but  circumstances  could  prevent  us  from  promptly  filing  patent  applications  on  our 
inventions.

Among some of the other changes introduced by the AIA are changes that limit where a patentee may file a patent 
infringement  suit  and  providing  opportunities  for  third  parties  to  challenge  any  issued  patent  in  the  USPTO.  This 
applies to all of our U.S. patents, even those issued before March 16, 2013. Because of a lower evidentiary standard 
in USPTO proceedings compared to the evidentiary standard in U.S. federal courts necessary to invalidate a patent 

69

claim, a third party could potentially provide evidence in a USPTO proceeding sufficient for the USPTO to hold a 
claim  invalid  even  though  the  same  evidence  would  be  insufficient  to  invalidate  the  claim  if  first  presented  in  a 
district court action.

Accordingly, a third party may attempt to use the USPTO procedures to invalidate our patent claims that would not 
have  been  invalidated  if  first  challenged  by  the  third  party  as  a  defendant  in  a  district  court  action.  It  is  not  clear 
what, if any, impact the AIA will have on the operation of our business. However, the AIA and its implementation 
could  increase  the  uncertainties  and  costs  surrounding  the  prosecution  of  our  or  our  licensors’  or  collaboration 
partners’ patent applications and the enforcement or defense of our or our licensors’ or collaboration partners’ issued 
patents.

Additionally, the U.S. Supreme Court has ruled on several patent cases in recent years either narrowing the scope of 
patent protection available in certain circumstances or weakening the rights of patent owners in certain situations. In 
addition to increasing uncertainty with regard to our ability to obtain patents in the future, this combination of events 
has created uncertainty with respect to the value of patents, once obtained. Depending on decisions by Congress, the 
federal courts and the USPTO, the laws and regulations governing patents could change in unpredictable ways that 
could weaken our ability to obtain new patents or to enforce our existing patents and patents that we might obtain in 
the future. Similarly, the complexity and uncertainty of European patent laws has also increased in recent years. In 
addition,  the  European  patent  system  is  relatively  stringent  in  the  type  of  amendments  that  are  allowed  during 
prosecution. Complying with these laws and regulations could limit our ability to obtain new patents in the future 
that may be important for our business.

Confidentiality agreements with employees and others may not adequately prevent disclosure of trade secrets and 
protect other proprietary information.

We consider proprietary trade secrets and confidential know-how and unpatented know-how to be important to our 
business. We may rely on trade secrets or confidential know-how to protect our technology, especially where patent 
protection  is  believed  to  be  of  limited  value.  However,  trade  secrets  and  confidential  know-how  are  difficult  to 
maintain as confidential.

To protect this type of information against disclosure or appropriation by competitors, our policy is to require our 
employees, consultants, contractors and advisors to enter into confidentiality agreements with us. We also seek to 
preserve the integrity and confidentiality of our data, trade secrets and know-how by maintaining physical security 
of  our  premises  and  physical  and  electronic  security  of  our  information  technology  systems.  Monitoring 
unauthorized uses and disclosures is difficult, and we do not know whether the steps we have taken to protect our 
proprietary  technologies  will  be  effective.  We  cannot  guarantee  that  our  trade  secrets  and  other  proprietary  and 
confidential information will not be disclosed or that competitors will not otherwise gain access to our trade secrets. 
However,  current  or  former  employees,  consultants,  contractors  and  advisors  may  unintentionally  or  willfully 
disclose  our  confidential  information  to  competitors,  and  confidentiality  agreements  may  not  provide  an  adequate 
remedy  in  the  event  of  unauthorized  disclosure  of  confidential  information.  Enforcing  a  claim  that  a  third  party 
obtained  illegally  and  is  using  trade  secrets  and/or  confidential  know-how  is  expensive,  time  consuming  and 
unpredictable.  The  enforceability  of  confidentiality  agreements  may  vary  from  jurisdiction  to  jurisdiction. 
Furthermore, if a competitor lawfully obtained or independently developed any of our trade secrets, we would have 
no right to prevent such competitor from using that technology or information to compete with us, which could harm 
our competitive position. Additionally, if the steps taken to maintain our trade secrets are deemed inadequate, we 
may have insufficient recourse against third parties for misappropriating the trade secret.

Failure  to  obtain  or  maintain  trade  secrets  and  confidential  know-how  trade  protection  could  adversely  affect  our 
competitive  position.  Moreover,  our  competitors  may  independently  develop  substantially  equivalent  proprietary 
information and may even apply for patent protection in respect of the same. If successful in obtaining such patent 
protection, our competitors could limit our use of our trade secrets and/or confidential know-how.

We  may  be  subject  to  claims  by  third  parties  asserting  that  our  employees  or  we  have  misappropriated  their 
intellectual property, or claiming ownership of what we regard as our own intellectual property.

Many  of  our  employees,  including  our  senior  management,  were  previously  employed  at  universities  or  at  other 
biopharmaceutical  companies,  including  our  competitors  or  potential  competitors.  Some  of  these  employees 
executed  proprietary  rights,  non-disclosure  and  non-competition  agreements  in  connection  with  such  previous 
employment. Although we try to ensure that our employees do not use the proprietary information or know-how of 
others  in  their  work  for  us,  we  may  be  subject  to  claims  that  we  or  these  employees  have  used  or  disclosed 
confidential information or intellectual property, including trade secrets or other proprietary information, of any such 
employee’s former employer. Litigation may be necessary to defend against these claims.

70

If  we  fail  in  prosecuting  or  defending  any  such  claims,  in  addition  to  paying  monetary  damages,  we  may  lose 
valuable  intellectual  property  rights  or  personnel  or  sustain  damages.  Such  intellectual  property  rights  could  be 
awarded to a third party, and we could be required to obtain a license from such third party to commercialize our 
technology or products. Such a license may not be available on commercially reasonable terms or at all. Even if we 
successfully  prosecute  or  defend  against  such  claims,  litigation  could  result  in  substantial  costs  and  distract 
management.

Obtaining  and  maintaining  our  patent  protection  depends  on  compliance  with  various  procedural,  document 
submission,  fee  payment  and  other  requirements  imposed  by  governmental  patent  agencies,  and  our  patent 
protection could be reduced or eliminated for non-compliance with these requirements.

Periodic  maintenance  and  annuity  fees  on  any  issued  patent  are  due  to  be  paid  to  the  USPTO  and  foreign  patent 
agencies  in  several  stages  over  the  lifetime  of  the  patent.  The  USPTO  and  various  foreign  governmental  patent 
agencies require compliance with a number of procedural, documentary, fee payment and other similar provisions 
during the patent application process. While an inadvertent lapse can in many cases be cured by payment of a late 
fee or by other means in accordance with the applicable rules, 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.  Non-compliance  events  that  could  result  in  abandonment  or  lapse  of  a  patent  or  patent 
application  include  failure  to  respond  to  official  actions  within  prescribed  time  limits,  non-payment  of  fees  and 
failure  to  properly  legalize  and  submit  formal  documents.  If  we  or  our  licensors  or  collaboration  partners  fail  to 
maintain the patents and patent applications covering our product candidates, our competitors might be able to enter 
the market, which would hurt our competitive position and could impair our ability to successfully commercialize 
any product candidate.

Our information technology systems, and those of our manufacturers, suppliers and other third parties that we 
use  to  conduct  our  pre-clinical  and  clinical  trials  or  otherwise  collaborate  with,  may  fail  or  suffer  security 
breaches, which could distract our operations and cause delays in our research and development work, and may 
adversely affect our business, operations and financial performance. 

In the ordinary course of our business, we and our manufacturers, suppliers and third parties that we use to conduct 
our  pre-clinical  and  clinical  trials  or  otherwise  collaborate  with,  collect  and  store  sensitive  data,  including 
intellectual property, clinical trial data, proprietary business information and personally identifiable information of 
our  clinical  trial  subjects  and  employees,  in  our  and  third-party  data  centers  and  on  our  and  third-party  networks. 
The  secure  processing,  maintenance  and  transmission  of  this  information  is  critical  to  our  operations.  Our 
information technology and other internal infrastructure systems, including corporate firewalls, servers, leased lines 
and connection to the Internet, and that of our manufacturers, suppliers and other third parties that we use to conduct 
our pre-clinical and clinical trials or otherwise collaborate with, face the risk of systemic failure that could disrupt 
our  operations.  A  significant  disruption  in  the  availability  of  these  information  technology  and  other  internal 
infrastructure systems could cause interruptions in our collaborations and delays in our research and development 
work. Further, our information technology systems and those of our third-party service providers, strategic partners 
and other contractors or consultants are vulnerable to damage, attack or interruption from computer viruses, malware 
(e.g ransomware), natural disasters, terrorism, war, telecommunication and electrical failures, hacking, cyberattacks, 
phishing  attacks  and  other  social  engineering  schemes,  malicious  code,  employee  theft  or  misuse,  human  error, 
fraud,  denial  or  degradation  of  service  attacks,  sophisticated  nation-state  and  nation-state-supported  actors  or 
unauthorized  access  or  use  by  persons  inside  our  organization,  or  persons  with  access  to  systems  inside  our 
organization. Attacks upon information technology systems are increasing in their frequency, levels of persistence, 
sophistication and intensity, and are being conducted by sophisticated and organized groups and individuals with a 
wide  range  of  motives  and  expertise.  As  a  result  of  the  COVID-19  pandemic  and  continued  hybrid  working 
environment,  we  may  also  face  increased  cybersecurity  risks  due  to  our  reliance  on  internet  technology  and  the 
number of our employees who are working remotely, which may create additional opportunities for cybercriminals 
to exploit vulnerabilities. Furthermore, because the techniques used to obtain unauthorized access to, or to sabotage 
or disrupt, systems change frequently and often are not recognized until launched against a target, we may be unable 
to  anticipate  these  techniques  or  implement  adequate  preventative  measures.  We  may  also  experience  security 
breaches  that  may  remain  undetected  for  an  extended  period.  Even  if  identified,  we  may  be  unable  to  adequately 
investigate  or  remediate  incidents  or  breaches  due  to  attackers  increasingly  using  tools  and  techniques  that  are 
designed to circumvent controls, to avoid detection, and to remove or obfuscate forensic evidence.

Despite  security  measures  that  we  and  our  critical  third  parties  (e.g.,  collaborators)  implement,  our  information 
technology and infrastructure may be vulnerable to attacks by hackers or internal bad actors, breaches due to human 
error, technical vulnerabilities, malfeasance or other disruptions. We and certain of our service providers are from 
time to time subject to cyberattacks and security incidents. Although to our knowledge we have not experienced any 

71

significant security breach to date, any such breach could compromise our networks and the information stored there 
could be accessed, publicly disclosed, lost or stolen. Any such access, disclosure or other loss of information could 
result  in  legal  claims  or  proceedings,  liability  under  laws  that  protect  the  privacy  of  personal  data,  regulatory 
penalties,  disrupt  our  operations,  damage  our  reputation,  and  cause  a  loss  of  confidence  in  us  and  our  ability  to 
conduct  clinical  trials,  which  could  adversely  affect  our  reputation  and  delay  clinical  development  of  our  product 
candidates. Any losses, costs or liabilities may not be covered by, or may exceed the coverage limits of, any or all 
applicable insurance policies.

72

Risks Related to Employee Matters and Managing Growth

Our  future  growth  and  ability  to  compete  depends  on  our  ability  to  retain  our  key  personnel  and  recruit 
additional qualified personnel.

Our  success  depends  upon  the  contributions  of  our  key  management,  scientific  and  technical  personnel,  many  of 
whom have been instrumental for us and have substantial experience with ensifentrine and related technologies. Our 
key management individuals include our chief executive officer, David Zaccardelli, our chief financial officer, Mark 
Hahn,  our  general  counsel,  Claire  Poll,  our  chief  medical  officer,  Kathleen  Rickard,  our  senior  vice  president, 
chemistry manufacturing and controls, Peter Spargo, our senior vice president, regulatory affairs, Caroline Diaz, our 
senior vice president of commercial, Christopher Martin, and our senior vice president, R&D, Tara Rheault. The loss 
of  key  managers  and  senior  scientists  could  delay  our  research  and  development  activities.  In  addition,  the 
competition  for  qualified  personnel  in  the  biopharmaceutical  and  pharmaceutical  field  is  intense,  and  our  future 
success  depends  upon  our  ability  to  attract,  retain  and  motivate  highly  skilled  scientific,  technical  and  managerial 
employees.  We  face  competition  for  personnel  from  other  companies,  universities,  public  and  private  research 
institutions and other organizations. If our recruitment and retention efforts are unsuccessful in the future, it may be 
difficult for us to achieve our product candidate development objectives, raise additional capital and implement our 
business strategy.

We expect to expand our development, regulatory and sales and marketing capabilities, and as a result, we may 
encounter difficulties in managing our growth, which could disrupt our operations.

We  expect  to  experience  significant  growth  in  the  number  of  our  employees  and  the  scope  of  our  operations, 
particularly in the areas of drug development, regulatory affairs and sales and marketing. To manage our anticipated 
future  growth,  we  must  continue  to  implement  and  improve  our  managerial,  operational  and  financial  systems, 
expand  our  facilities  and  continue  to  recruit  and  train  additional  qualified  personnel.  Due  to  our  limited  financial 
resources and the limited experience of our management team in managing a company with such anticipated growth, 
we may not be able to effectively manage the expansion of our operations or recruit and train additional qualified 
personnel.  The  expansion  of  our  operations  may  lead  to  significant  costs  and  may  divert  our  management  and 
business development resources. Any inability to manage growth could delay the execution of our business plans or 
disrupt our operations.

Risks Related to Our ADSs

Certain of our shareholders, members of our board of directors, and senior management own a majority of our 
ordinary  shares  (including  ordinary  shares  represented  by  ADSs)  and  as  a  result,  are  be  able  to  exercise 
significant control over us.

As of December 31, 2022, our senior management, board of directors and greater than 5% shareholders and their 
respective  affiliates,  in  the  aggregate,  owned  approximately  32%  of  our  outstanding  voting  ordinary  shares 
(including  ordinary  shares  represented  by  ADSs)  assuming  no  exercise  of  outstanding  options.  Depending  on  the 
level of attendance at our general meetings of shareholders, these shareholders either alone or voting together as a 
group  may  be  in  a  position  to  determine  or  significantly  influence  the  outcome  of  decisions  taken  at  any  such 
general meeting. Any shareholder or group of shareholders controlling more than 50% of the share capital present 
and  voting  at  our  general  meetings  of  shareholders  may  control  any  shareholder  resolution  requiring  a  simple 
majority,  including  the  appointment  of  board  members,  certain  decisions  relating  to  our  capital  structure,  and  the 
approval of certain significant corporate transactions. Among other consequences, this concentration of ownership 
may have the effect of delaying or preventing a change in control and might therefore negatively affect the market 
price of our ADSs and ordinary shares.

Because  we  do  not  anticipate  paying  any  cash  dividends  on  our  ADSs  or  ordinary  shares  in  the  foreseeable 
future, capital appreciation, if any, will be our ADS holders’ and shareholders’ sole source of gains and they may 
never receive a return on their investment.

Under current English law, a company’s accumulated realized profits must exceed its accumulated realized losses 
(on  a  non-consolidated  basis)  before  dividends  can  be  paid.  Therefore,  we  must  have  distributable  profits  before 
issuing a dividend. We have not paid dividends in the past on our ordinary shares. We intend to retain earnings, if 
any, for use in our business and do not anticipate paying any cash dividends in the foreseeable future. As a result, 
capital appreciation, if any, on our ADSs or ordinary shares will be our ADS holders’ and shareholders’ sole source 
of gain for the foreseeable future, and they will suffer a loss on their investment if they are unable to sell their ADSs 

73

or ordinary shares at or above the price at which they were purchased. Investors seeking cash dividends should not 
purchase our ADSs or ordinary shares.

Holders  of  our  ADSs  may  not  have  the  same  voting  rights  as  the  holders  of  our  ordinary  shares  and  may  not 
receive voting materials in time to be able to exercise their right to vote.

Holders  of  our  ADSs  are  not  be  able  to  exercise  voting  rights  attaching  to  the  ordinary  shares  evidenced  by  our 
ADSs on an individual basis. Holders of our ADSs have appointed a depositary as their representative to exercise 
the voting rights attaching to the ordinary shares represented by their ADSs. Holders of our ADSs may not receive 
voting  materials  in  time  to  instruct  the  depositary  to  vote,  and  it  is  possible  that  they,  or  persons  who  hold  their 
ADSs  through  brokers,  dealers  or  other  third  parties,  will  not  have  the  opportunity  to  exercise  a  right  to  vote. 
Furthermore, the depositary will not be liable for any failure to carry out any instructions to vote, for the manner in 
which  any  vote  is  cast  or  for  the  effect  of  any  such  vote.  As  a  result,  holders  of  our  ADSs  may  not  be  able  to 
exercise voting rights and may lack recourse if their ADSs are not voted as requested. In addition, holders of our 
ADSs will not be able to call a shareholders’ meeting.

Holders of our ADSs may not receive distributions on our ordinary shares represented by our ADSs or any value 
for them if it is illegal or impractical to make them available to them.

The depositary for our ADSs has agreed to pay to holders of our ADSs the cash dividends or other distributions it or 
the  custodian  receives  on  our  ordinary  shares  or  other  deposited  securities  after  deducting  its  fees  and  expenses. 
Holders of our ADSs will receive these distributions in proportion to the number of our ordinary shares their ADSs 
represent.  However,  in  accordance  with  the  limitations  set  forth  in  the  deposit  agreement  entered  into  with  the 
depositary, it may be unlawful or impractical to make a distribution available to holders of our ADSs. We have no 
obligation to take any other action to permit the distribution of our ADSs, ordinary shares, rights or anything else to 
holders  of  our  ADSs.  This  means  that  holders  of  our  ADSs  may  not  receive  the  distributions  we  make  on  our 
ordinary shares or any value from them if it is unlawful or impractical to make the distributions available to them. 
These restrictions may have a material adverse effect on the value of our ADSs.

Holders of our ADSs may be subject to limitations on transfer of their ADSs.

ADSs are transferable on the books of the depositary. However, the depositary may close its transfer books at any 
time or from time to time when it deems expedient in connection with the performance of its duties. In addition, the 
depositary may refuse to deliver, transfer or register transfers of ADSs generally when our books or the books of the 
depositary are closed, or at any time if we or the depositary deems it advisable to do so because of any requirement 
of  law  or  of  any  government  or  governmental  body,  or  under  any  provision  of  the  deposit  agreement,  or  for  any 
other  reason  in  accordance  with  the  terms  of  the  deposit  agreement.  These  limitations  on  transfer  may  have  a 
material adverse effect on the value of our ADSs.

The rights of our shareholders may differ from the rights typically offered to shareholders of a U.S. corporation.

We are incorporated under English law. The rights of holders of ordinary shares and, therefore, certain of the rights 
of holders of ADSs, are governed by English law, including the provisions of the Companies Act 2006, and by our 
Articles of Association. These rights differ in certain material respects from the rights of shareholders in typical U.S. 
corporations. As a result, investors in our ordinary shares or ADSs may not have the same protections or rights as 
they would if they had invested in a U.S. corporation. This may make our ADSs less attractive to such investors, 
which could harm the value of our ADSs.

Claims of U.S. civil liabilities may not be enforceable against us.

We  are  incorporated  under  English  law.  Substantially  all  of  our  assets  are  located  outside  the  United  States.  The 
majority of our senior management and board of directors reside outside the United States. As a result, it may not be 
possible for investors to effect service of process within the United States upon such persons or to enforce judgments 
obtained in U.S. courts against them or us, including judgments predicated upon the civil liability provisions of the 
U.S. federal securities laws.

The United States and the United Kingdom do not currently have a treaty providing for recognition and enforcement 
of  judgments  (other  than  arbitration  awards)  in  civil  and  commercial  matters.  Consequently,  a  final  judgment  for 
payment given by a court in the United States, whether or not predicated solely upon U.S. securities laws, would not 
automatically  be  recognized  or  enforceable  in  the  United  Kingdom.  In  addition,  uncertainty  exists  as  to  whether 
U.K.  courts  would  entertain  original  actions  brought  in  the  United  Kingdom  against  us  or  our  directors  or  senior 
management predicated upon the securities laws of the United States or any state in the United States. Any final and 
conclusive monetary judgment for a definite sum obtained against us in U.S. courts would be treated by the courts of 
the United Kingdom as a cause of action in itself and sued upon as a debt at common law so that no retrial of the 

74

issues  would  be  necessary,  provided  that  certain  requirements  are  met.  Whether  these  requirements  are  met  in 
respect  of  a  judgment  based  upon  the  civil  liability  provisions  of  the  U.S.  securities  laws,  including  whether  the 
award  of  monetary  damages  under  such  laws  would  constitute  a  penalty,  is  an  issue  for  the  court  making  such 
decision. If an English court gives judgment for the sum payable under a U.S. judgment, the English judgment will 
be enforceable by methods generally available for this purpose. These methods generally permit the English court 
discretion to prescribe the manner of enforcement.

As a result, U.S. investors may not be able to enforce against us or our senior management, board of directors or 
certain experts named herein who are residents of the United Kingdom or countries other than the United States any 
judgments  obtained  in  U.S.  courts  in  civil  and  commercial  matters,  including  judgments  under  the  U.S.  federal 
securities laws.

75

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 trading price of our ADSs.

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. Inadequate internal controls 
could  also  cause  investors  to  lose  confidence  in  our  reported  financial  information,  which  could  have  a  negative 
effect on the trading price of our ADSs.

Management will be required to assess the effectiveness of our internal controls annually. However, for as long as 
we are a non-accelerated filer, 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. 
Undetected material weaknesses in our internal controls could lead to financial statement restatements requiring us 
to incur the expense of remediation and could also result in an adverse reaction in the financial markets due to a loss 
of confidence in the reliability of our financial statements.

We  may  have  inadvertently  violated  Section  13(k)  of  the  Exchange  Act  (implementing  Section  402  of  the 
Sarbanes-Oxley Act of 2002) and may be subject to sanctions as a result.

Section  13(k)  of  the  Exchange  Act  provides  that  it  is  unlawful  for  a  company,  such  as  ours,  that  has  a  class  of 
securities  registered  under  Section  12  of  the  Exchange  Act  to,  directly  or  indirectly,  including  through  any 
subsidiary, extend or maintain credit in the form of a personal loan to or for any director or executive officer of the 
company. In August 2018, a receivable arose with respect to taxes due upon the vesting of restricted share units held 
by one of our directors and two of our executive officers, which may have violated Section 13(k) of the Exchange 
Act. The receivable was repaid, with interest, in March 2019, as soon as management became aware of the possible 
violation.  Issuers  that  are  found  to  have  violated  Section  13(k)  of  the  Exchange  Act  may  be  subject  to  civil 
sanctions,  including  injunctive  remedies  and  monetary  penalties,  as  well  as  criminal  sanctions.  The  imposition  of 
any  of  such  sanctions  on  us  could  have  a  material  adverse  effect  on  our  business,  financial  position,  results  of 
operations or cash flows.

Risks Related to Taxation

Changes in our tax rates, unavailability of certain tax credits or reliefs or exposure to additional tax liabilities or 
assessments could affect our profitability, and audits by tax authorities could result in additional tax payments for 
prior periods.

New income, sales use or other tax laws, statutes, rules, regulations or ordinances could be enacted at any time, or 
interpreted,  changed,  modified  or  applied  adversely  to  us,  any  of  which  could  adversely  affect  our  business 
operations and financial performance. We are currently unable to predict whether such changes will occur and, if so, 
the ultimate impact on our business. To the extent that such changes have a negative impact on us, including as a 
result of related uncertainty, these changes may materially and adversely impact our business, financial condition, 
results of operations and cash flows. For example, beginning in 2022, the Tax Cuts and Jobs Act of 2017 eliminates 
the option to deduct research and development expenditures and requires taxpayers to amortize them over five years 
pursuant  to  Section  174  of  the  U.S.  Internal  Revenue  Code  of  1986,  as  amended,  or  the  Code,  or  15  years  for 
expenditures attributable to research and development conducted outside the United States. If the requirement is not 
modified or deferred, it may materially reduce our cash flows.

We carry out research and development activities including, but not limited to, developing ensifentrine for various 
indications  and  delivery  methods,  and  as  a  result  we  benefit  in  the  U.K.  from  the  HM  Revenue  and  Customs,  or 
HMRC, small and medium sized enterprises research and development relief, or SME R&D Relief, which provides 
relief against U.K. Corporation Tax.

Broadly,  SME  R&D  Relief  comprises  two  elements,  (a)  allowing  qualifying  SMEs  to  deduct  a  total  of  230% 
expected to reduce to 186% for expenditure incurred on or after April 1, 2023 of their qualifying expenditure from 
their  yearly  profit  for  U.K.  Corporation  Tax  purposes  (the  deduction  is  given  by  allowing  an  additional  130% 
deduction (expected to reduce to 86% for expenditure incurred after April 1, 2023) plus the usual 100% deduction), 

76

or  the  SME  R&D  Additional  Deduction  and,  (b)  where  there  are  not  sufficient  profits  for  U.K.  Corporation  Tax 
purposes  to  fully  utilize  the  SME  R&D  Additional  Deduction,  the  excess  (“surrenderable  losses”)  can  be  carried 
forward to offset against future taxable profits, or a tax credit currently equal to 14.5% (expected to reduce to 10% 
from April 1, 2023) of such surrenderable loss can be claimed in cash, or the SME R&D Tax Credit.

Based  on  criteria  established  by  HMRC  a  portion  of  expenditure  incurred  in  relation  to  our  research  and 
development  activities  including,  but  not  limited  to,  operating  clinical  trials,  manufacturing,  consultant  and  salary 
and  related  costs,  is  eligible  for  the  SME  R&D  Additional  Deduction.  Our  consequential  surrenderable  losses  are 
currently eligible for the SME R&D Tax Credit, in accordance with HMRC criteria.

In the financial statements for the year ended December 31, 2021, we recorded an SME R&D Tax Credit of $15.6 
million  which  was  subsequently  received  in  cash  in  the  year  ended  December  31,  2022.  For  the  year  ended 
December 31, 2022, we recorded an SME R&D Tax Credit of $9.6 million, which we expect to receive in the year 
ending December 31, 2023.

Changes  to  the  UK’s  SME  R&D  Relief  regime  may  adversely  affect  our  financial  condition.  In  particular,  HM 
Treasury and HMRC launched a consultation in January 2023 entitled “R&D Tax Reliefs Review, Consultation on a 
single scheme” which seeks views on the possible merger of the SME R&D Relief scheme and the “RDEC” scheme 
applicable to “large” companies, the outcome of which is currently uncertain. If it is decided to merge the schemes, 
any new regime is expected to apply with effect from April 1, 2024.

If we were classified as a passive foreign investment company, it would result in adverse U.S. federal income tax 
consequences to U.S. holders.

A  non-U.S.  company  will  be  considered  a  passive  foreign  investment  company,  or  PFIC,  for  any  taxable  year  in 
which (i) 75% or more of its gross income consists of passive income or (ii) 50% or more of the average quarterly 
value of its assets consists of assets that produce, or are held for the production of, passive income. For purposes of 
these tests, passive income includes dividends, interest, gains from the sale or exchange of investment property and 
certain rents and royalties. In addition, for purposes of the above calculations, a non-U.S. corporation that directly or 
indirectly owns at least 25% by value of the shares of another corporation is treated as holding and receiving directly 
its proportionate share of assets and income of such corporation. If we are classified as a PFIC for any taxable year 
during  which  a  U.S.  Holder  holds  our  ordinary  shares  or  ADSs,  certain  adverse  U.S.  federal  income  tax 
consequences  could  apply  to  such  U.S.  Holder,  including  (i)  the  treatment  of  all  or  a  portion  of  any  gain  on 
disposition  as  ordinary  income,  (ii)  the  application  of  a  deferred  interest  charge  on  such  gain  and  the  receipt  of 
certain dividends and (iii) the obligation to comply with certain reporting requirements. A “U.S. Holder” is a holder 
who, for U.S. federal income tax purposes, is a beneficial owner of our ordinary shares or ADSs who is a citizen or 
individual resident of the United States, a corporation, or other entity taxable as a corporation, created or organized 
in or under the laws of the United States, any state therein or the District of Columbia; an estate the income of which 
is subject to U.S. federal income taxation regardless of its source; or a trust that (i) is subject to the supervision of a 
U.S.  court  and  all  substantial  decisions  of  which  are  subject  to  the  control  of  one  or  more  “United  States 
persons” (within the meaning of Section 7701(a)(30) of the Code), or (ii) has a valid election in effect to be treated 
as a United States person. No assurances regarding our PFIC status can be provided for the current taxable year or 
any future taxable years. The determination of whether we are a PFIC is a fact-intensive determination made on an 
annual basis applying principles and methodologies that in some circumstances are unclear and subject to varying 
interpretation.  Under  the  income  test,  our  status  as  a  PFIC  depends  on  the  composition  of  our  income  which  will 
depend on the transactions we enter into in the future and our corporate structure. The composition of our income 
and assets is also affected by the spending of the cash we raise in any offering. Each U.S. Holder should consult its 
own  tax  advisors  with  respect  to  the  potential  adverse  U.S.  tax  consequences  to  it  if  we  are  or  were  to  become  a 
PFIC.

If we are classified as a PFIC in any year with respect to which a U.S. Holder owns our ordinary shares or ADSs, we 
will continue to be treated as a PFIC with respect to such U.S. Holder in all succeeding years during which the U.S. 
Holder owns our ordinary shares or ADSs, regardless of whether we continue to meet the PFIC test described above, 
unless the U.S. Holder makes a specified election once we cease to be a PFIC.

Based on the current and expected composition of our income and assets and the value of our assets, we believe that 
we were not a PFIC for U.S. federal income tax purposes for our taxable year ended December 31, 2022. However, 
no  assurances  regarding  our  PFIC  status  can  be  provided  for  any  past  taxable  years,  the  taxable  year  ending 
December 31, 2022, or any future taxable years.

77

If a U.S. Holder is treated as owning at least 10% of our ordinary shares or ADSs, such holder may be subject to 
adverse U.S. federal income tax consequences.

If a U.S. Holder (as defined above) is treated as owning, directly, indirectly or constructively, at least 10% of the 
value  or  voting  power  of  our  ordinary  shares  or  ADSs,  such  U.S.  Holder  may  be  treated  as  a  “United  States 
shareholder” with respect to each “controlled foreign corporation” or “CFC” in our group, if any. Because our group 
includes one or more U.S. subsidiaries, certain of our non-U.S. subsidiaries could be treated as CFCs, regardless of 
whether we are treated as a CFC. A United States shareholder of a controlled foreign corporation may be required to 
annually report and include in its U.S. taxable income its pro rata share of “Subpart F income,” “global intangible 
low-taxed income” and investments in U.S. property by CFCs, regardless of whether we make any distributions. An 
individual  that  is  a  United  States  shareholder  with  respect  to  a  CFC  generally  would  not  be  allowed  certain  tax 
deductions  or  foreign  tax  credits  that  would  be  allowed  to  a  United  States  shareholder  that  is  a  U.S.  corporation. 
Failure to comply with these reporting obligations may subject a United States shareholder to significant monetary 
penalties and may prevent the statute of limitations with respect to such shareholder’s U.S. federal income tax return 
for  the  year  for  which  reporting  was  due  from  starting.  We  cannot  provide  any  assurances  that  we  will  assist  our 
investors  in  determining  whether  we  or  any  of  our  non-U.S.  subsidiaries  are  treated  as  a  CFC  or  whether  such 
investor is treated as a United States shareholder with respect to any of such CFCs. Further, we cannot provide any 
assurances that we will furnish to any United States shareholder information that may be necessary to comply with 
the reporting and tax paying obligations described in this risk factor. U.S. Holders should consult their tax advisors 
regarding the potential application of these rules to their investment in our ordinary shares or ADSs.

78

General Risks

The price of our ADSs may be volatile and may fluctuate due to factors beyond our control.

The trading market for publicly traded emerging biopharmaceutical and drug discovery and development companies 
has  been  highly  volatile  and  is  likely  to  remain  highly  volatile  in  the  future.  The  market  price  of  our  ADSs  may 
fluctuate significantly due to a variety of factors, including:

•

•

•

•

•

•

•

•

•

•

•

•

•

positive or negative results from, or delays in, clinical trials of ensifentrine;

developments in our competitors’ businesses;

in  entering 

delays 
to  development  or 
into  collaborations  and  strategic  relationships  with  respect 
commercialization of ensifentrine or entry into collaborations and strategic relationships on terms that are not 
deemed to be favorable to us;

technological innovations or commercial product introductions by us or competitors;

changes in government regulations;

developments concerning proprietary rights, including patents and litigation matters;

public concern relating to the commercial value or safety of ensifentrine;

financing or other corporate transactions;

publication of research reports or comments by securities or industry analysts or commentators;

general market conditions in the pharmaceutical industry or in the economy as a whole;

the loss of any of our key scientific or senior management personnel;

sales of our ADSs by us, our senior management or board members, and significant holders of our ADSs; or

other events and factors, many of which are beyond our control.

These  and  other  market  and  industry  factors  may  cause  the  market  price  and  demand  for  our  ADSs  to  fluctuate 
substantially,  regardless  of  our  actual  operating  performance,  which  may  limit  or  prevent  investors  from  readily 
selling their ADSs and may otherwise negatively affect the liquidity of our ADSs. In addition, the stock market in 
general,  and  biopharmaceutical  companies  in  particular,  have  experienced  extreme  price  and  volume  fluctuations 
that  have  often  been  unrelated  or  disproportionate  to  the  operating  performance  of  these  companies.  In  the  past, 
when the market price of a stock has been volatile, holders of that stock have sometimes instituted securities class 
action litigation against the issuer. If any of the holders of our ADSs were to bring such a lawsuit against us, we 
could incur substantial costs defending the lawsuit and the attention of our senior management would be diverted 
from  the  operation  of  our  business.  Any  adverse  determination  in  litigation  could  also  subject  us  to  significant 
liabilities.

Future  sales,  or  the  possibility  of  future  sales,  of  a  substantial  number  of  our  ADSs  or  ordinary  shares  could 
adversely affect the price of our ADSs.

Future sales of a substantial number of our ADSs or ordinary shares, or the perception that such sales will occur, 
could cause a decline in the market price of our ADSs. Sales in the United States of our ADSs and ordinary shares 
held  by  our  directors,  officers  and  affiliated  shareholders  are  subject  to  restrictions.  If  these  shareholders  sell 
substantial amounts of ordinary shares or ADSs in the public market, or the market perceives that such sales may 
occur, the market price of our ADSs and our ability to raise capital through an issue of equity securities in the future 
could be adversely affected.

Unstable  market  and  economic  conditions  may  have  serous  adverse  consequences  on  our  business  and  financial 
condition  and  the  price  of  our  ADSs.  The  global  economy,  including  credit  and  financial  markets,  has  recently 
experienced extreme volatility and disruptions, including severely diminished liquidity and credit availability, rising 
interest  and  inflation  rates,  declines  in  consumer  confidence,  declines  in  economic  growth,  increases  in 
unemployment  rates  and  uncertainty  about  economic  stability.  If  the  equity  and  credit  markets  continue  to 
deteriorate or the United Kingdom or the United States enters a recession, it may make any necessary debt or equity 
financing  more  difficult  to  obtain  in  a  timely  manner  or  on  favorable  terms,  more  costly  or  more  dilutive.  In 
addition, there is a risk that one or more of our CROs, suppliers or other third-party providers may not survive an 
economic  downturn  or  recession.  As  a  result,  our  business,  results  of  operations  and  price  of  our  ADSs  may  be 
adversely affected.

79

If  securities  or  industry  analysts  or  commentators  publish  inaccurate  or  unfavorable  research,  about  our 
business, the price of our ADSs and ordinary shares and our trading volume could decline.

The trading market for our ADSs and ordinary shares depends in part on the research and reports that securities or 
industry  analysts  or  commentators  publish  about  us  or  our  business.  If  one  or  more  of  the  analysts  who  cover  us 
downgrade  our  ADSs  or  if  they  or  other  industry  commentators  publish  inaccurate  or  unfavorable  research  or 
comments  about  our  business,  the  price  of  our  ADSs  and  ordinary  shares  would  likely  decline.  If  one  or  more  of 
these analysts cease coverage of us or fail to publish reports on us regularly, demand for our ADSs could decrease, 
which might cause the price of our ADSs and ordinary shares and trading volume to decline.

We have incurred and expect to continue to incur increased costs as a result of operating as a public company in 
the  United  States,  and  our  senior  management  are  required  to  devote  substantial  time  to  new  compliance 
initiatives and corporate governance practices.

As a U.S. public company, we have incurred and expect to continue to incur significant legal, accounting and other 
expenses  that  we  did  not  incur  prior  to  becoming  a  U.S.  public  company.  The  Sarbanes-Oxley  Act  of  2002,  the 
Dodd-Frank  Wall  Street  Reform  and  Consumer  Protection  Act,  the  listing  requirements  of  Nasdaq  and  other 
applicable  securities  rules  and  regulations  impose  various  requirements  on  non-U.S.  reporting  public  companies, 
including the establishment and maintenance of effective disclosure and financial controls and corporate governance 
practices.  Our  senior  management  and  other  personnel  have  devoted  and  will  need  to  continue  to  devote  a 
substantial  amount  of  time  to  these  compliance  initiatives.  Moreover,  these  rules  and  regulations  will  continue  to 
increase our legal and financial compliance costs and will make some activities more time-consuming and costly.

These rules and regulations are often subject to varying interpretations, in many cases due to their lack of specificity, 
and, as a result, their application in practice may evolve over time as new guidance is provided by regulatory and 
governing  bodies.  This  could  result  in  continuing  uncertainty  regarding  compliance  matters  and  higher  costs 
necessitated by ongoing revisions to disclosure and governance practices.

Pursuant to Section 404 of the Sarbanes-Oxley Act of 2002, or Section 404, we are required to furnish a report by 
our  senior  management  on  our  internal  control  over  financial  reporting.  However,  while  we  remain  a  non-
accelerated filer, we will not be required to include an attestation report on internal control over financial reporting 
issued by our independent registered public accounting firm. To prepare for eventual compliance with Section 404, 
once we are no longer a non-accelerated filer, we will be engaged in a process to document and evaluate our internal 
control  over  financial  reporting,  which  is  both  costly  and  challenging.  In  this  regard,  we  will  need  to  continue  to 
dedicate  internal  resources,  potentially  engage  outside  consultants  and  adopt  a  detailed  work  plan  to  assess  and 
document the adequacy of internal control over financial reporting, continue steps to improve control processes as 
appropriate,  validate  through  testing  that  controls  are  functioning  as  documented  and  implement  a  continuous 
reporting and improvement process for internal control over financial reporting. Despite our efforts, there is a risk 
that we will not be able to conclude, within the prescribed time frame or at all, that our internal control over financial 
reporting is effective as required by Section 404. If we identify one or more material weaknesses, it could result in 
an adverse reaction in the financial markets due to a loss of confidence in the reliability of our financial statements.

Item 1B. 

Unresolved Staff Comments

None.

Item 2.  Properties

Our corporate headquarters is in leased office space at 3 More London Riverside, London, U.K. The leases on the 
offices  expire  in  the  first  quarter  of  2024.  We  also  have  office  space  at  8045  Arco  Corporate  Drive,  Suite  130, 
Raleigh, North Carolina 27617, USA, which expires in the second quarter of 2024, and 33 Park of Commerce, Suite 
300,  Savanna,  Georgia,  31405,  which  expires  in  the  forth  quarter  of  2025.  We  believe  that  these  facilities  are 
adequate to meet our current and near term needs.

80

Item 3.  Legal Proceedings

From time to time, we may become involved in legal proceedings arising in the ordinary course of our business. We 
are not currently subject to any material legal proceedings.

Item 4.  Mine Safety Disclosures

Not applicable.

81

PART II

Item  5.  Market  for  Registrant’s  Common  Equity,  Related  Stockholder  Matters  and  Issuer  Purchases  of 
Equity Securities

Market Information and Holders

Prior to October 30, 2020, our ordinary shares were traded on the AIM Market of the London Stock Exchange under 
the symbol “VRP”. We canceled the admission of the ordinary shares to trading on AIM on October 30, 2020 and 
our  ordinary  shares  are  now  not  publicly  traded.  Our  American  Depositary  Shares  (“ADSs”)  have  been  publicly 
traded on the Nasdaq Global Market under the symbol “VRNA” since April 27, 2017.

Each ADS represents eight ordinary shares of Verona Pharma plc.

As  of  February  13,  2023,  99.9%  of  our  voting  ordinary  shares  are  held  in  ADS  form,  between  7,869  registered 
holders. The 0.1% balance of our ordinary voting shares are held as unlisted voting ordinary shares. We also have 
48,088,896 unlisted non-voting ordinary shares.

Dividends

We have never declared or paid any dividends on our common stock. We anticipate that we will retain all of our 
future  earnings,  if  any,  for  use  in  the  operation  and  expansion  of  our  business  and  do  not  anticipate  paying  cash 
dividends in the foreseeable future.

Recent Sales of Unregistered Securities

None.

Item 6.  [Reserved]

Item 7.  Management’s Discussion and Analysis of Financial Condition and Results of Operations

You  should  read  the  following  discussion  and  analysis  of  our  financial  condition  and  results  of  operations  in 
conjunction  with  the  consolidated  financial  statements  and  the  related  notes  to  those  statements  included  later  in 
this Annual Report on Form 10-K. In addition to historical financial information, the following discussion contains 
forward-looking  statements  that  reflect  our  plans,  estimates,  beliefs  and  expectations  that  involve  risks  and 
uncertainties.  Our  actual  results  and  the  timing  of  events  could  differ  materially  from  those  discussed  in  these 
forward-looking  statements.  Important  factors  that  could  cause  or  contribute  to  these  differences  include  those 
discussed below and elsewhere in this Annual Report on Form 10-K, particularly in Part I, Item 1A. “Risk Factors” 
and the section entitled “Cautionary Note Regarding Forward-Looking Statements.”

Overview

We  are  a  clinical-stage  biopharmaceutical  company  focused  on  developing  and  commercializing  innovative 
therapeutics  for  the  treatment  of  respiratory  diseases  with  significant  unmet  medical  need.  Our  product  candidate, 
ensifentrine, is an investigational, first-in-class, inhaled, selective, small molecule and dual inhibitor of the enzymes 
phosphodiesterase  3  and  4  (“PDE3”  and  “PDE4”),  combining  bronchodilator  and  non-steroidal  anti-inflammatory 
activities in one compound.

During 2022, we reported positive top-line results from both of our Phase 3 ENHANCE (“Ensifentrine as a Novel 
inHAled  Nebulized  COPD  thErapy”)  trials  evaluating  nebulized  ensifentrine  for  the  maintenance  treatment  of 
chronic obstructive pulmonary disease (“COPD”). Ensifentrine met the primary endpoint in both the ENHANCE-1 
and ENHANCE-2 trials demonstrating statistically significant and clinically meaningful improvements in measures 
of  lung  function.  In  addition,  ensifentrine  substantially  reduced  the  rate  and  risk  of  COPD  exacerbations  in 
ENHANCE-1 and ENHANCE-2. Ensifentrine was well tolerated in both trials.

Based on the results from our ENHANCE program, we believe ensifentrine, if approved, has the potential to change 
the treatment paradigm for COPD, if approved. The totality of data from clinical trials, in particular top-line results 
from the ENHANCE program, support our belief. We plan to submit a New Drug Application (“NDA”) to the U.S. 
Food and Drug Administration (“FDA”) in the second quarter of 2023 for inhaled ensifentrine for the maintenance 
treatment of COPD.

82

In Phase 2 clinical trials, ensifentrine has demonstrated positive results in patients with COPD, asthma and cystic 
fibrosis (“CF”). Two additional formulations of ensifentrine have been evaluated in Phase 2 studies for the treatment 
of  COPD:  dry  powder  inhaler  (“DPI”)  and  pressurized  metered-dose  inhaler  (“pMDI”).  Ensifentrine  has  shown 
positive Phase 2 data in COPD trials when delivered by each of these formulations.

If approved, we intend to commercialize ensifentrine for the maintenance treatment of COPD in the United States 
(“US”). Although we believe ensifentrine will not be regulated as a drug device combination, patients use a readily 
available standard jet nebulizer to take ensifentrine. Outside the US, we intend to license ensifentrine to companies 
with expertise and experience in developing and commercializing products in those regions. To that end, we have 
entered  a  strategic  collaboration  with  Nuance  Pharma  Limited  (“Nuance  Pharma”),  a  Shanghai-based  specialty 
pharmaceutical company, to develop and commercialize ensifentrine in Greater China.

We  have  incurred  recurring  losses  and  negative  cash  flows  from  operations  since  inception,  and  have  an 
accumulated deficit of $333.1 million as of December 31, 2022. We expect to incur additional losses and negative 
cash flows from operations until our product candidates potentially gain regulatory approval and reach commercial 
profitability, if at all.

We anticipate significant expenses in connection with our ongoing activities, as we:

•

•

build out commercial infrastructure and prepare for potential commercial launch;

continue to invest in the clinical development of ensifentrine for the treatment of COPD or other indications;

• manufacture ensifentrine and engage in other Chemistry, Manufacturing and Controls activities; and

• maintain, expand and protect our intellectual property portfolio

We believe that our cash and cash equivalents as of December 31, 2022, expected cash receipts from the UK tax 
credit program and funding expected to become available under the $150.0 million debt financing facility secured in 
October 2022, will enable us to fund our planned operating expenses and capital expenditure requirements through 
at  least  the  end  of  2025  including  the  planned  commercial  launch  of  ensifentrine  in  the  US,  if  approved.  The 
advances under the $150.0 million debt financing facility are contingent upon the achievement of certain clinical and 
regulatory milestones and other specified conditions. See “Indebtedness” for additional information.

Significant agreements

Ligand agreement

In  2006  we  acquired  Rhinopharma  and  assumed  contingent  liabilities  owed  to  Ligand  UK  Development  Limited 
(“Ligand”)  (formerly  Vernalis  Development  Limited).  We  refer  to  the  assignment  and  license  agreement  as  the 
Ligand Agreement.

Ligand assigned to us all of its rights to certain patents and patent applications relating to ensifentrine and related 
compounds (the “Ligand Patents”) and an exclusive, worldwide, royalty-bearing license under certain Ligand know-
how  to  develop,  manufacture  and  commercialize  products  (the  “Licensed  Products”)  developed  using  Ligand 
Patents, Ligand know-how and the physical stock of certain compounds.

The contingent liability comprises a milestone payment on obtaining the first approval of any regulatory authority 
for the commercialization of a Licensed Product, low single digit royalties based on the future sales performance of 
all  Licensed  Products  and  a  portion  equal  to  a  mid-twenty  percent  of  any  consideration  received  from  any  sub-
licensees for the Ligand Patents and for Ligand know-how.

At time of the acquisition the contingent liability was not recognized as part of the acquisition accounting as it was 
immaterial.  We  will  therefore  record  as  a  research  and  development  expense  the  milestone  payment  or  royalties 
when they are probable.

In  March  2022  we  entered  into  an  Amendment  Agreement  (the  “Amendment”)  with  Ligand  whereby  the  Ligand 
Agreement was amended to clarify certain ambiguous terms in the Ligand Agreement. Pursuant to the Amendment:

• 
we agreed to pay to Ligand (i) $2.0 million within five business days of the date of the Amendment and (ii) 
$15.0 million upon the first commercial sale of ensifentrine by us or a sub-licensee, which amount is payable in cash 
or, at the our discretion, by the issuance of Company equity of equivalent value, as determined based on the volume-
weighted  average  price  of  the  our  American  Depositary  Shares  on  the  Nasdaq  Global  Market  over  the  ten  (10) 
trading days including and prior to such milestone event;

83

• 
accordance with its terms;

the  Ligand  Agreement  shall  expire  on  March  24,  2042  unless  terminated  earlier  by  either  party  in 

• 
upon termination of the Ligand Agreement, any Sub-licensee (as defined in the Amendment) shall have the 
right  to  enter  into  a  direct  license  agreement  with  Ligand  for  the  portion  of  the  Program  IP  (as  defined  in  the 
Amendment) that was sub-licensed by such Sub-licensee;

• 
Company of equivalent value; and

the  Milestone  Payment  may  be  paid  in  cash  or,  at  our  discretion,  by  issuing  to  Ligand  shares  in  the 

• 
each  party’s  right  to  terminate  the  Ligand  Agreement  is  conditioned  upon  such  party  obtaining  a  final 
judgment of the English High Court declaring that the other party is in material breach of its obligations under the 
Ligand Agreement.

For  the  year  ended  December  31,  2022  we  paid  the  $2.0  million  to  Ligand  and  accounted  for  the  $2.0  million 
payment at execution as selling, general and administrative expense in the consolidated statements of operations as 
the payment is related to a contract modification.

Nuance agreement

We  entered  into  a  collaboration  and  license  agreement  (the  “Nuance  Agreement”)  with  Nuance  Pharma  effective 
June  9,  2021  (the  “Effective  Date”)  under  which  we  granted  Nuance  Pharma  the  exclusive  rights  to  develop  and 
commercialize  ensifentrine  in  Greater  China  (China,  Taiwan,  Hong  Kong  and  Macau).  In  return,  we  received  an 
unconditional  right  to  consideration  aggregating  $40.0  million  consisting  of  $25.0  million  in  cash  and  an  equity 
interest valued at $15.0 million as of the Effective Date in Nuance Biotech, the parent company of Nuance Pharma. 
We are eligible to receive future milestone payments of up to $179.0 million, triggered upon achievement of certain 
clinical, regulatory, and commercial milestones as well as tiered double-digit royalties on net sales in Greater China.

As of December 31, 2022, the $25.0 million cash payment and $15.0 million equity interest had been received and 
the  holding  in  Nuance  Biotech  was  recorded  as  Equity  interest  on  the  Consolidated  Balance  Sheet,  included 
elsewhere in this Annual Report on Form 10-K. The Equity interest is recorded at cost as the Company has elected 
to use the measurement alternative for equity investments without readily determinable fair values. The Company 
will  evaluate  this  investment  for  indicators  of  impairment  quarterly.  The  Company  did  not  identify  events  or 
changes in circumstances that may have a significant effect on the fair value of the investment during the year ended 
December 31, 2022.

Nuance  Pharma  will  be  responsible  for  all  costs  related  to  clinical  development  and  commercialization  of 
ensifentrine  in  Greater  China.  In  August  2022,  Nuance  Pharma,  received  clearance  from  China’s  Center  for  Drug 
Evaluation  to  begin  Phase  1  and  Phase  3  studies  with  ensifentrine  for  COPD  in  mainland  China.  A  joint  steering 
committee  has  been  established  between  us  and  Nuance  Pharma  to  oversee  and  coordinate  the  overall  conduct  of 
such clinical development and commercialization. We intend to use the joint steering committee to help ensure the 
clinical  development  of  ensifentrine  in  Greater  China  aligns  with  our  overall  global  development  and 
commercialization strategy.

Under the terms of the Nuance Agreement, at any time until three months prior to the expected submission of the 
first New Drug Application in Greater China, if (i) a third party is interested in partnering with us, either globally or 
in  territory  covering  at  least  the  United  States  or  Europe,  for  the  development  and/or  commercialization  of 
ensifentrine or (ii) we undergo a change of control, we will have an exclusive option right to buy back the license 
granted  to  Nuance  Pharma  and  all  related  assets.  The  price  is  agreed  to  be  equal  to  the  aggregate  of  (i)  all  prior 
amounts  paid  by  Nuance  Pharma  to  us  in  cash  under  the  agreement  and  (ii)  all  development  and  regulatory  costs 
incurred and paid by Nuance Pharma in connection with the development and commercialization of the ensifentrine 
under  the  Nuance  Agreement  multiplied  by  a  single-digit  factor  range  dependent  upon  achievement  of  certain 
milestones, subject to a specified maximum amount.

The  Nuance  Agreement  will  continue  on  a  jurisdiction-by-jurisdiction  and  product-by-product  basis  until  the 
expiration of royalty payment obligations with respect to such product in such jurisdiction unless earlier terminated 
by the parties. Either party may terminate the Nuance Agreement for an uncured material breach or bankruptcy of 
the other party. Nuance Pharma may also terminate the Nuance Agreement at will upon 90 days' prior written notice. 

We reviewed the buy-back option and determined that because it is conditional on a third party we do not have the 
practical ability to exercise it and, accordingly, the contract is accounted for under ASC 606.

The  transaction  price  at  the  Effective  Date  of  the  Nuance  Agreement  was  $40.0  million  consisting  of  the  $25.0 
million upfront cash payment and $15.0 million equity interest. Developmental and regulatory milestones, and the 

84

manufacture and supply of ensifentrine drug product, were not included in the transaction price as we determined 
that  it  is  not  probable  that  a  significant  reversal  in  the  amount  of  cumulative  revenue  recognized  will  not  occur. 
Commercial  milestones  and  sales  royalties  were  also  excluded  and  will  be  recognized  when  the  milestones  are 
achieved or the sales occur in Greater China.

The  performance  obligations  in  the  Nuance  Agreement  include  the  grant  of  the  license  (including  the  right  to 
commercialize  ensifentrine  until  the  end  of  the  term,  the  sharing  of  certain  know  how,  and  the  sharing  of  certain 
clinical and regulatory data), and manufacture and supply of ensifentrine drug product. We have determined that the 
manufacturing and supply was not at a discount.

We  have  determined  that  the  license  and  the  know  how  shared  with  Nuance  Pharma  constitutes  functional 
intellectual property and that revenue relating to this should be recognized at a point in time. Consequently, we have 
determined  that  we  fulfilled  our  obligations  to  Nuance  Pharma  when  we  delivered  the  know  how  that  will  allow 
Nuance Pharma to file an investigational new drug application in Greater China. We delivered this know how in the 
year ended December 31, 2021, and, as such, recorded the $40.0 million as revenue in the year then ended.

On the Effective Date, $4.0 million of costs of obtaining the contract were recorded as a contract asset. In the year 
ended  December  31,  2021,  the  entire  cost  was  recognized  as  Selling,  General  and  Administrative  expense  in  the 
Consolidated Statement of Operations, in line with recognition of the revenue relating to the contract.

On April 13, 2022, we entered into an Agreement for the Manufacture and Supply of ensifentrine (“Nuance Supply 
Agreement”)  with  Nuance  Pharma.  We  determined  that  the  manufacturing  and  supply  of  ensifentrine  to  Nuance 
represents a distinct and separate performance obligation, for which consideration to be received is variable based on 
the quantities to be ordered by Nuance. Revenue earned with the manufacture and supply of the licensed product is, 
and  will  be,  recognized  as  the  supply  is  delivered  to  Nuance.  We  have  determined  we  are  acting  as  principal  in 
relation  to  the  manufacture  and  supply  under  the  Agreement.  In  its  capacity  as  principal,  the  Company  will 
recognize the associated revenue on a gross basis. As of December 31, 2022, we have recognized $0.5 million in 
relation to the clinical supply of ensifentrine to Nuance Pharma.

For additional information regarding the Nuance Agreement, see Note 8 to our consolidated financial statements and 
related notes included elsewhere in this Annual Report.

Warrants

On  July  29,  2016,  as  part  of  a  private  placement  we  issued  warrants  to  investors.  The  warrant  holders  could 
subscribe for an ordinary share at a per share exercise price of £1.7238. They could also opt for a cashless exercise 
of  their  warrants  whereby  they  could  choose  to  exchange  the  warrants  held  for  a  reduced  number  of  warrants 
exercisable at nil consideration.

If,  after  a  transaction,  should  the  warrants  have  been  exercisable  for  unlisted  securities,  the  warrant  holders  were 
able  to  demand  a  cash  payment  instead  of  the  delivery  of  the  underlying  securities.  Accordingly,  they  were 
accounted for as a liability under ASC 480 “Distinguishing Liabilities from Equity” and recorded at fair value using 
the Black-Scholes valuation methodology, on recognition and at each reporting date. The warrants expired May 2, 
2022.

Term loans

In November 2020, we and Verona Pharma Inc. entered into a term loan facility of up to $30.0 million with Silicon 
Valley Bank (the “Term Loan”). On October 14, 2022, we and Verona Pharma, Inc. entered into a term loan (the 
“Oxford  Term  Loan”)  of  up  to  $150.0  million  with  Oxford  Finance  Luxembourg  which  replaced  the  Company’s 
existing Term Loan. See “Indebtedness” for additional information.

Critical accounting 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  accordance  with  generally  accepted  accounting 
principles in the United States of America ("U.S. GAAP"). The preparation of these financial statements requires us 
to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities, disclosure of 
contingent liabilities as of the dates of the balance sheets and the reported amounts of expenses during the reporting 
periods. In accordance with U.S. GAAP, we evaluate our estimates and judgments on an ongoing basis.

85

While  our  significant  accounting  policies  are  described  in  more  detail  in  the  notes  to  our  consolidated  financial 
statements included elsewhere in this Annual Report, we believe that the following accounting policy is most critical 
to the judgments and estimates used in the preparation of our consolidated financial statements.

Research and development costs

Research  and  development  (“R&D”)  costs  are  charged  to  the  consolidated  statements  of  operations  and 
comprehensive  loss,  as  incurred.  We  are  required  to  estimate  our  expenses  resulting  from  our  obligation  under 
contracts  with  vendors  and  consultants  and  clinical  site  agreements  in  connection  with  our  R&D  efforts.  The 
financial  terms  of  these  contracts  are  subject  to  negotiations  which  vary  contract  to  contract  and  may  result  in 
payment flows that do not match the periods over which materials or services are provided under such contracts. Our 
objective is to reflect the appropriate clinical trial expenses in our financial statements by matching those expenses 
with the period in which services and efforts are expended. We account for these expenses according to the progress 
of the trials and other development activities measured by patient progression and the timing of various aspects of 
the trial. We also determine prepaid and accrual estimates through discussions with applicable personnel and outside 
service  providers  as  to  the  progress  of  clinical  trials,  or  other  services  completed.  During  the  course  of  a  clinical 
trial, we may adjust our rate of clinical trial expense recognition if actual results differ from its estimates. We make 
estimates of its prepaid and accrued expenses as of each balance sheet date in our financial statements based on facts 
and  circumstances  known  at  that  time.  Although  we  do  not  expect  our  estimates  to  be  materially  different  from 
amounts  actually  incurred,  our  understanding  of  the  status  and  timing  of  services  performed  relative  to  the  actual 
status and timing of services performed may vary and may result in us reporting amounts that are too high or too low 
for any particular period. Our clinical trial prepaid and accrual expense is dependent upon the timely and accurate 
reporting  of  study  recruitment  from  contract  research  organizations  and  activities  carried  out  by  other  third-party 
vendors as well as the timely processing of any change orders from the contract research organizations.

86

Components of results of operations

We anticipate that our expenses will increase substantially if and as we:

•

•

•

•

•

•

establish a sales, marketing and distribution infrastructure and scale-up manufacturing capabilities to potentially 
commercialize any products for which we may obtain regulatory approval;

continue the clinical development of our DPI and pMDI formulations of ensifentrine and research and develop 
other formulations of ensifentrine;

initiate  and  conduct  further  clinical  trials  for  ensifentrine  for  the  treatment  of  acute  COPD,  cystic  fibrosis 
(“CF”) or any other indication;

initiate and progress pre-clinical studies relating to other potential indications of ensifentrine;

seek to discover and develop additional product candidates;

seek regulatory approvals for any of our product candidates that successfully complete clinical trials;

• maintain, expand and protect our intellectual property portfolio;

•

•

add  clinical,  scientific,  operational,  financial  and  management  information  systems  and  personnel,  including 
personnel to support our product development and potential future commercialization efforts and to support our 
continuing operations as a U.S. public company; and

experience any delays or encounter any issues from any of the above, including but not limited to failed studies, 
complex results, safety issues or other regulatory challenges.

Revenue

To date, we have not generated revenue from the sale of any products. All revenue to date has been derived from the 
receipt of up-front proceeds and supply of ensifentrine under the Nuance Agreement.

In the future, we anticipate generating revenue from a combination of sales of our products, if approved, whether 
through our own or a third-party sales force, and license fees, milestone payments and royalties in connection with 
strategic collaborations regarding ensifentrine or other potential products. We expect that any revenue we generate 
will fluctuate from quarter to quarter. If we or our strategic partners fail to complete the development of ensifentrine 
in a timely manner or obtain regulatory approval for them, or if we fail to develop our own sales force or find one or 
more strategic partners for the commercialization of approved products, our ability to generate future revenue, and 
our financial condition and results of operations would be materially adversely affected.

Operating expenses

Research and development costs

Research and development costs consist of salary and personnel related costs and third party costs for our research 
and  development  activities  for  ensifentrine.  Personnel  related  costs  include  a  share  based  compensation  charge 
relating  to  our  stock  option  plan.  The  largest  component  of  third  party  costs  is  for  clinical  trials,  as  well  as 
manufacturing for clinical supplies and associated development, and pre-clinical studies. Research and development 
costs are expensed as incurred.

As  the  Phase  3  ENHANCE  program  is  nearing  completion,  we  expect  our  research  and  development  costs  to 
decrease over the next several quarters until we add new compounds or develop ensifentrine further in other delivery 
methods or indications. Due to the nature of research and development, the expected costs are inherently uncertain 
and may vary significantly from our current expectations.

Selling, general and administrative costs

Selling,  general  and  administrative  costs  consist  of  salary  and  personnel  related  costs,  including  share  based 
expense, expenses relating to operating as a public company, including professional fees, insurance, and commercial 
related costs, as well as other operating expenses.

We  expect  commercial  costs  to  increase  as  we  continue  to  develop  our  commercial  operations,  prepare  for  a 
potential launch, and, in the event of successful regulatory approval, incur sales force, marketing and other launch 

87

related costs. As we develop our knowledge of the market and refine our commercialization plans, expected costs 
may vary significantly from our current expectations.

Other income/(expense)

Other income/(expense) are driven by interest income and expense, foreign exchange movements on cash and cash 
equivalents and taxes receivable, the U.K. research and development tax credits and other non-operating income and 
loss items.

We participate in the U.K. Small and Medium Enterprises R&D tax relief program. The tax credits are calculated as 
a percentage of qualifying research and development expenditure and are payable in cash by the U.K. government to 
us. Credits recorded in the 2022 financial year are expected to be received in the 2023 financial year.

Taxation

We are subject to corporate taxation in the United States and the United Kingdom. We have generated losses since 
inception  and  have  therefore  not  paid  United  Kingdom  corporation  tax.  The  income  taxes  presented  in  our 
consolidated statements of operations and comprehensive loss represents the tax impact from our operating activities 
in the United States, which generates taxable income based on intercompany service arrangements.

United  Kingdom  losses  may  be  carried  forward  indefinitely  to  be  offset  against  future  taxable  profits,  subject  to 
various utilization criteria and restrictions. The amount that can be offset each year is limited to £5.0 million plus an 
incremental 50% of U.K. taxable profits.

88

Results of operations for the years ended December 31, 2022 and 2021

The  following  table  shows  our  statements  of  operations  for  the  years  ended  December  31,  2022  and  2021  (in 
thousands):

Revenue
Cost of sales

Gross profit
Operating expenses:

Research and development

Selling, general and administrative

Total operating expenses

Operating loss

Other income/(expense):

Research and development tax credit

Loss on extinguishment of debt

Interest income

Interest expense

Fair value movement on warrants

Foreign exchange (loss)/gain

Total other income, net

Loss before income taxes

Income tax (expense)/income

Net loss

Revenue

Year ended December 31,

2022

2021

Variance

$ 

458  $ 
(346)   
112 

40,000  $ 
— 
40,000 

(39,542) 
(346) 
(39,888) 

49,283 

26,579 
75,862 

79,406 

33,907 
113,313 

(30,123) 

(7,328) 
(37,451) 

(75,750)   

(73,313)   

(2,437) 

9,634 

(815) 

2,821 

15,630 

—  
14 

(521)   

(340)   

— 

(3,817)   

7,302 

2,246 

176 

17,726 

(5,996) 

(815) 

2,807 

(181) 

(2,246) 

(3,993) 

(10,424) 

(68,448)   

(55,587)   

(12,861) 

(253)   

18 

(271) 

$ 

(68,701)  $ 

(55,569)  $ 

(13,132) 

Revenue  was  $0.5  million  for  the  year  ended  December  31,  2022  compared  to  $40.0  million  for  the  year  ended 
December 31, 2021 a decrease of $39.5 million. The decrease is due to different revenue streams in each year with 
2022  revenue  related  to  sales  of  clinical  supply  materials  to  Nuance  Pharma  and  2021  revenue  related  to  upfront 
consideration received under the Nuance Agreement.

Cost of sales

Cost of sales of $0.3 million for the year ended December 31, 2022 related to the manufacture of the clinical supply 
materials sold to Nuance Pharma.

Research and development costs

Research  and  development  costs  were  $49.3  million  for  the  year  ended  December  31,  2022,  compared  to  $79.4 
million for the year ended December 31, 2021, a decrease of $30.1 million. This decrease was primarily due to a 
reduction  in  clinical  trial  and  other  development  costs  of  $27.9  million  as  we  were  nearing  completion  of  the 
ENHANCE studies at the end of 2022 and a $4.2 million decrease in share-based compensation charges.

Selling, general and administrative costs

Selling,  general  and  administrative  costs  were  $26.6  million  for  the  year  ended  December  31,  2022  compared  to 
$33.9 million for the year ended December 31, 2021, a decrease of $7.3 million. This decrease was driven primarily 
by a $7.1 million decrease in share-based compensation charges.

89

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Other income / (expense)

The R&D tax credit for the year ended December 31, 2022 was $9.6 million compared to a credit of $15.6 million 
for  the  year  ended  December  31,  2021,  a  decrease  of  $6.0  million.  This  decrease  is  attributable  to  our  lower 
qualifying expenditure on research and development in 2022 compared to 2021.

The foreign exchange loss of $3.8 million in 2022 and gain of $0.2 million in 2021 relate to the foreign exchange 
movements on the cash held in pound sterling and our research and development tax credit, which is a receivable in 
pound sterling. In 2022, the pound sterling weakened against the U.S. dollar causing the loss.

Cash flows

The following table summarizes our cash flows for the years ended December 31, 2022 and 2021 (in thousands):

Cash and cash equivalents at beginning of the year

Net cash used in operating activities

Net cash used in investing activities
Net cash provided by/(used in) financing activities
Effect of exchange rate changes on cash and cash equivalents

Cash and cash equivalents at end of the year

Operating activities

Year ended December 31,

2022
148,380  $ 

2021
187,986  $ 

$ 

Variance

(39,606) 

(59,862)   

(33,254)   

(26,608) 

(29)   

140,818 

(12)   
(6,117)   

(17) 
146,935 

(1,480)
227,827  $ 

(223)
148,380  $ 

$ 

(1,257)
79,447 

Operating  activities  used  $59.9  million  of  cash  during  the  year  ended  December  31,  2022,  primarily  for  clinical 
development  costs  related  to  the  ENHANCE  program,  employee  related  expenses  and  a  decrease  in  payables  and 
accruals. Operating cash flows also included office operational expenses, recruiting and legal fees.

Operating  activities  used  $33.3  million  of  cash  during  the  year  ended  December  31,  2021,  primarily  for  clinical 
development costs related to the ENHANCE program, employee related expenses, $4.0 million commission paid to 
a  financial  advisor  partially  offset  by  the  receipt  of  a  $25.0  million  net  upfront  payment  related  to  our  Nuance 
Agreement  and  an  increase  in  payables  and  accruals.  Operating  cash  flows  also  included  office  operational 
expenses, recruiting and legal fees.

Financing activities

For the year ended December 31, 2022, financing activities provided $140.8 million of net cash, related to $140.2 
million net from a public offering, $3.9 million net from a new debt agreement with Oxford finance and termination 
of the SVB loan, $1.4 million of proceeds from share options offset by $4.7 million payments of withholding taxes 
from share-based awards.

For  the  year  ended  December  31,  2021,  financing  activities  used  $6.1  million  of  net  cash,  related  to  $6.8  million 
payments  of  withholding  taxes  from  share-based  awards  offset  by  $0.7  million  of  proceeds  from  the  ATM  sales 
agreement.

Liquidity and capital resources

We do not currently have any approved products and have never generated any revenue from product sales. To date, 
we have financed our operations primarily through the issuances of our equity securities, including warrants, from 
borrowings  under  the  term  loan  facilities  and  from  upfront  payments  received  under  the  Nuance  Agreement.  See 
“Significant Agreements” and “Indebtedness” for additional information.

We have incurred recurring losses since inception, including net losses of $68.7 million, and $55.6 million for the 
years  ended  December  31,  2022,  and  2021,  respectively.  In  addition,  as  of  December  31,  2022,  we  had  an 
accumulated deficit of $333.1 million. We expect to continue to generate operating losses for the foreseeable future.

August 2022 follow-on equity offering

In  August  2022,  we  completed  an  upsized  public  offering  of  14,260,000  ADSs,  each  representing  eight  of  our 
ordinary  shares,  nominal  value  £0.05  per  share,  at  a  price  to  the  public  of  $10.50  per  ADS,  which  includes  the 

90

 
 
 
 
exercise  in  full  by  the  underwriters  of  their  option  to  purchase  an  additional  1,860,000  ADSs.  The  aggregate  net 
proceeds from the offering were $140.2 million after deducting underwriting discounts and offering expenses.

Open market sale agreement

In March 2021, we entered into an open market sale agreement with Jefferies LLC (“Jefferies”) to sell shares of our 
ordinary  shares,  in  the  form  of  ADSs,  with  aggregate  gross  sales  proceeds  of  up  to  $100.0  million,  from  time  to 
time, through an “at the market” equity offering program under which Jefferies will act as sales agent (the “ATM 
Program”). We provided Jefferies with customary indemnification rights, and Jefferies is entitled to a commission at 
a fixed commission rate of 3.0% of the gross proceeds. 

During the year ended December 31, 2021, we sold 873,104 ordinary shares (equivalent to 109,138 ADSs) under the 
ATM  Program,  at  an  average  price  of  approximately  $0.86  per  share  (equivalent  to  $6.91  per  ADS),  raising 
aggregate net proceeds of $0.7 million after deducting issuance costs. As of December 31, 2021, $99.2 million of 
ordinary shares, in the form of ADSs, remained available for sale under the ATM Program.

During the year ended December 31, 2022, we sold 80,696 ordinary shares (equivalent to 10,087 ADSs) under the 
ATM  Program,  at  an  average  price  of  approximately  $0.86  per  share  (equivalent  to  $6.86  per  ADS),  raising 
aggregate net proceeds of $0.1 million after deducting issuance costs. As of December 31, 2022, $99.2 million of 
ordinary shares, in the form of ADSs, remained available for sale under the ATM Program.

Additionally,  between  January  1,  2023  and  March  3,  2023,  the  Company  sold  20,321,384  ordinary  shares 
(equivalent  to  2,540,173  ADSs)  under  the  ATM  Program,  at  an  average  price  of  approximately  $2.88  per  share 
(equivalent to $23.08 per ADS), raising aggregate net proceeds of $56.9 million after deducting issuance costs. As 
of March 3, 2023, there remained $40.6 million of ordinary shares, in the form of ADSs, available for sale under the 
ATM Program.

We  have  no  ongoing  material  financing  commitments,  such  as  lines  of  credit  or  guarantees,  that  are  expected  to 
affect our liquidity over the next five years, other than leases and the Oxford Term Loan.

Indebtedness

In November, 2020, we and Verona Pharma, Inc. (“Verona U.S.”, and together with us, the “Borrowers”) entered 
into the Term Loan facility of up to $30.0 million, consisting of term loan advances in an aggregate amount of $5.0 
million  funded  at  closing,  a  term  loan  advance  available  subject  to  certain  terms  and  conditions  in  an  aggregate 
amount  of  $10.0  million  (the  “Term  B  Loan”)  and  a  term  loan  advance  available  subject  to  certain  terms  and 
conditions in an aggregate amount of $15.0 million (the “Term C Loan”), with Silicon Valley Bank (“SVB”), the 
proceeds of which will be used for general corporate and working capital purposes.

On October 14, 2022 (the “Effective Date”), we and Verona Pharma, Inc. (“Verona U.S.” and together with us, the 
“Borrowers”) entered into the Debt Facility with Oxford Finance Luxembourg S.À R.L. (“Oxford”) for an aggregate 
amount of up to $150.0 million (the “Oxford Term Loan”). The Oxford Term Loan provides for an initial term loan 
advance in an aggregate amount of $10.0 million to be funded on the Effective Date (the “Oxford Term A Loan”), 
and  up  to  four  additional  term  loan  advances  in  an  aggregate  amount  of  $140.0  million,  which  are  available  as 
described below and subject to terms of the loan and security agreement (“Loan Agreement”). The proceeds from 
the  Oxford  Term  Loan  will  be  used  for  general  corporate  and  working  capital  purposes,  and  a  portion  of  the 
proceeds of the Oxford Term A Loan has been used to repay in full the existing outstanding indebtedness owed to 
SVB as discussed in Note 7 – Term Loan. The Oxford Term Loan has a maturity date of October 1, 2027.

The four additional term loan advances under the Oxford Term Loan consists of a $10.0 million term loan advance 
(the  “Oxford  Term  B  Loan”)  which  is  available  at  the  option  of  Company  from  the  Effective  Date  up  to  and 
including  March  31,  2023;  a  $20.0  million  term  loan  advance  (the  “Oxford  Term  C  Loan”)  available  during  the 
period commencing on the later of January 1, 2024 and the date on which we receive positive ENHANCE-1 data in 
the Phase 3 clinical trial for ensifentrine sufficient to support the submission of a New Drug Application (“NDA”) 
with the United States Food and Drug Administration (the “FDA”) for ensifentrine through and including March 29, 
2024; a $60.0 million term loan advance (the “Oxford Term D Loan”) available during the period commencing on 
the  later  of  October  1,  2024  and  the  date  on  which  we  receive  final  approval  from  the  FDA  for  our  NDA  for 
ensifentrine up to and including December 31, 2024; and a $50.0 million term loan advance (the “Oxford Term E 
Loan”) available during the interest-only period at our request and at Oxford’s sole discretion.

91

Each advance under the Oxford Term Loan accrues interest at a floating per annum rate equal to (a) the greater of (i) 
the 1-Month CME Term SOFR reference rate on the last business day of the month that immediately precedes the 
month in which the interest will accrue and (ii) 2.38%, plus (b) 5.50% (the “Basic Rate”). In no event shall the Basic 
Rate (x) for the Term A Loan be less than 7.88% and (y) for each other term loan be less than the Basic Rate on the 
business day immediately prior to the funding date of such term loan. The Basic Rate for the Term A Loan for the 
period from the Effective Date through and including October 31, 2022 shall be 8.54205% and the Basic Rate for 
each Term Loan shall not increase by more than 2.00% above the applicable Basic Rate as of the funding date of 
each  such  term  loan.  The  Oxford  Term  Loan  provides  for  interest-only  payments  on  a  monthly  basis  until  the 
payment date immediately preceding December 1, 2025, if the Term D Loan is not made, and December 1, 2026, if 
the  Term  D  Loan  is  made.  Thereafter,  amortization  payments  will  be  payable  monthly  in  equal  installments  of 
principal plus accrued interest.

Upon  repayment,  whether  at  maturity,  upon  acceleration  or  by  prepayment  or  otherwise,  we  shall  make  a  final 
payment to the lenders in an amount ranging from 1.30% to 3.00% of the aggregate principal balance, depending on 
the advances received under the Oxford Term Loan. We may prepay the Oxford Term Loan in full, or in part, in 
accordance with the terms of the Loan Agreement, which is subject to a prepayment fee of up to 2.00%, depending 
on the timing of the prepayment.

The  Oxford  Term  Loan  is  secured  by  a  lien  on  substantially  all  our  assets,  other  than  intellectual  property,  but 
including  any  rights  to  payments  and  proceeds  from  the  sale,  licensing  or  disposition  of  intellectual  property.  We 
have also granted Oxford a negative pledge with respect to our intellectual property. The Loan Agreement contains 
customary covenants and representations, including but not limited to financial reporting obligations and limitations 
on  dividends,  dispositions,  indebtedness,  collateral,  investments,  distributions,  transfers,  mergers  or  acquisitions, 
taxes, corporate changes, deposit accounts, transactions with affiliates and subsidiaries. The Loan Agreement also 
contains  other  customary  provisions,  such  as  expense  reimbursement,  non-disclosure  obligations  as  well  as 
indemnification rights for the benefit of Oxford.

Funding requirements

We believe that our cash and cash equivalents as of December 31, 2022, together with, expected cash receipts from 
U.K. tax credits and additional funding expected to become available under the Oxford Term Loan, will enable us to 
fund  our  planned  operating  expenses  and  capital  expenditure  requirements  through  at  least  the  end  of  2025, 
including  the  planned  commercial  launch  of  nebulized  ensifentrine  for  COPD  maintenance  treatment  in  the  U.S. 
Future  advances  under  the  Oxford  Term  Loan  are  contingent  upon  achievement  of  certain  clinical  and  regulatory 
milestones and other specified conditions.

We  may  require  additional  capital  to  commercialize  ensifentrine,  to  continue  the  clinical  development  of  our  DPI 
and pMDI formulations of ensifentrine and to research and develop additional formulations of or with ensifentrine. 
In  addition,  we  may  seek  to  initiate  or  conduct  preclinical  or  clinical  studies  with  ensifentrine  in  additional 
indications or to discover or in-license and develop additional product candidates. We may need to seek additional 
funding  through  public  or  private  financings,  debt  financing,  collaboration  or  licensing  agreements  and  other 
arrangements. However, there is no guarantee that we will be successful in securing additional capital on acceptable 
terms, or at all.

To the extent that we raise additional capital through the sale of equity or convertible debt securities, the ownership 
interest  of  our  shareholders  and  ADS  holders  will  be  diluted,  and  the  terms  of  these  securities  may  include 
liquidation or other preferences that adversely affect such holders’ rights as a shareholder or ADS holder. Any future 
debt financing or preferred equity financing, if available, may involve agreements that include covenants limiting or 
restricting  our  ability  to  take  specific  actions,  such  as  incurring  additional  debt,  making  capital  expenditures  or 
declaring dividends and may require the issuance of warrants, which could potentially dilute our security holders’ 
ownership interests.

If we raise additional funds through collaborations, strategic alliances or licensing arrangements with third parties, 
we may have to relinquish valuable rights to our technologies, future revenue streams, research programs 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  programs  or  any  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  for  ensifentrine  or  any  future  product  candidates  will  depend  on  many  factors, 
including:

92

•
product candidates and the potential that we may be required to conduct additional clinical trials for ensifentrine;

the progress, timing and completion of pre-clinical testing and clinical trials for ensifentrine or any future 

•

the number of potential new product candidates we decide to in-license and develop;

•
and potential commercialization of ensifentrine or any future product candidates;

the costs involved in growing our organization to the size needed to allow for the research, development 

•
claims or infringements raised by third parties;

the costs involved in filing patent applications and maintaining and enforcing patents or defending against 

the  time  and  costs  involved  in  obtaining  regulatory  approvals  for  ensifentrine  or  any  future  product 
•
candidate we develop and any delays we may encounter as a result of evolving regulatory requirements or adverse 
results with respect to ensifentrine or any future product candidates;

•
future product candidates;

any  licensing  or  milestone  fees  we  might  have  to  pay  during  future  development  of  ensifentrine  or  any 

•
selling  and  marketing  activities  undertaken  in  connection  with  the  anticipated  commercialization  of 
ensifentrine or any future product candidates, if approved, and costs involved in the creation of an effective sales and 
marketing organization; and

•
sales of ensifentrine or any future product candidates, if approved.

the amount of revenue, if any, we may derive either directly or in the form of royalty payments from future 

Our commercial revenue, if any, will be derived from sales of products that we do not expect to be commercially 
available for several years, if ever. Accordingly, we may need to obtain substantial additional funds to achieve our 
business objectives. 

Recent accounting pronouncements

For  a  discussion  of  pending  and  recently  adopted  accounting  pronouncements,  see  Note  2  to  our  consolidated 
financial statements included elsewhere in this Annual Report on Form 10-K

Item 7A. 

Quantitative and Qualitative Disclosures About Market Risk

We are a smaller reporting company as defined in Rule 12b-2 of the Exchange Act and are not required to provide 
the information otherwise required under this Item 7A.

Item 8.  Financial Statements and Supplementary Data

The information required by this Item is set forth in the consolidated financial statements and notes as referenced in 
Item 15 of Part IV of this Annual Report.

Item 9.  Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None

Item 9A. 

Controls and Procedures

Disclosure Controls and Procedures

Limitations on Effectiveness of Controls and Procedures

In designing and evaluating our disclosure controls and procedures, management recognizes that any controls and 
procedures,  no  matter  how  well  designed  and  operated,  can  provide  only  reasonable  assurance  of  achieving  the 
desired  control  objectives.  In  addition,  the  design  of  disclosure  controls  and  procedures  must  reflect  the  fact  that 
there  are  resource  constraints  and  that  management  is  required  to  apply  judgment  in  evaluating  the  benefits  of 
possible controls and procedures relative to their costs.

93

Disclosure Controls and Procedures

Our  management,  with  the  participation  of  our  principal  executive  officer  and  principal  financial  officer,  has 
evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a- 15(e) and 15d- 15(e) 
under the Exchange Act), as of the end of the period covered by this Annual Report. Based on such evaluation, our 
principal  executive  officer  and  principal  financial  officer  have  concluded  that  as  of  December  31,  2022,  our 
disclosure controls and procedures were effective at the reasonable assurance level.

Management’s Annual Report on Internal Control Over Financial Reporting

Our  management  is  responsible  for  establishing  and  maintaining  adequate  internal  control  over  our  financial 
reporting, as such term is defined in Rule 13a-15(f) under the Exchange Act.

Our management conducted an assessment of the effectiveness of our internal control over financial reporting based 
on the criteria set forth in “Internal Control – Integrated Framework (2013)” issued by the Committee of Sponsoring 
Organizations of the Treadway Commission.

Based  on  this  assessment,  our  management  concluded  that,  as  of  December  31,  2022,  our  internal  control  over 
financial reporting was effective.

Attestation Report of the Registered Public Accounting Firm

This Annual Report does not include an attestation report of our registered public accounting firm because we are a 
non-accelerated filer.

Changes in Internal Control over Financial Reporting

There  was  no  change  in  our  internal  control  over  financial  reporting  (as  defined  in  Rules  13a-15(f)  under  the 
Exchange Act) that occurred during the fourth quarter of fiscal year ended December 31, 2022, that has materially 
affected, or is reasonably likely to materially affect, our internal control over financial reporting.

Item 9B. 

Other Information

None.

Item 9C. 

Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

Not applicable.

94

PART III

Item 10. Directors, Executive Officers and Corporate Governance

Code of Ethics

Our  board  of  directors  has  adopted  a  written  Code  of  Business  Conduct  and  Ethics  applicable  to  all  officers, 
directors and employees, including our principal executive officer, principal financial officer, principal accounting 
officer  or  controller,  or  persons  performing  similar  functions.  We  have  posted  a  current  copy  of  our  Code  of 
Business Conduct and Ethics on our website at www.veronapharma.com in the “Investors” section under “Corporate 
Governance.” We intend to satisfy the disclosure requirement under Item 5.05 of Form 8-K regarding amendment 
to,  or  waiver  from,  a  provision  of  our  Code  of  Business  Conduct  and  Ethics,  as  well  as  Nasdaq’s  requirement  to 
disclose waivers with respect to directors and executive officers, by posting such information on our website at the 
address and location specified above. The information contained on our website is not incorporated by reference into 
this Annual Report.

The  remaining  information  required  by  this  item  will  be  included  in  our  definitive  proxy  statement  for  the  2023 
Annual General Meeting of Stockholders and is incorporated herein by reference to such proxy statement.

Item 11. Executive Compensation

The  information  required  by  this  item  will  be  included  in  our  definitive  proxy  statement  for  the  2023  Annual 
General Meeting of Shareholders and is incorporated herein by reference to such proxy statement.

Item  12.  Security  Ownership  of  Certain  Beneficial  Owners  and  Management  and  Related  Stockholder 
Matters

The  information  required  by  this  item  will  be  included  in  our  definitive  proxy  statement  for  the  2023  Annual 
General Meeting of Shareholders and is incorporated herein by reference to such proxy statement.

Item 13. Certain Relationships and Related Transactions, and Director Independence

The  information  required  by  this  item  will  be  included  in  our  definitive  proxy  statement  for  the  2023  Annual 
General Meeting of Shareholders and is incorporated herein by reference to such proxy statement.

Item 14. Principal Accountant Fees and Services

The  information  required  by  this  item  will  be  included  in  our  definitive  proxy  statement  for  the  2023  Annual 
General Meeting of Shareholders and is incorporated herein by reference to such proxy statement.

95

PART IV

Item 15. Exhibits and Financial Statement Schedules

(a)(1) Financial Statements

The following financial statements and the Report of Independent Registered Accounting Firm are filed as part of 
this Annual Report:

Report of Independent Registered Public Accounting Firm (PCAOB ID: 876)

Consolidated Balance Sheets as of December 31, 2022 and 2021
Consolidated Statements of Operations and Comprehensive Loss for the years ended December 31, 
2022 and 2021
Consolidated Statements of Changes in Shareholders’ Equity for the years ended December 31, 2022 
and 2021

Consolidated Statements of Cash Flows for the years ended December 31, 2022 and 2021

Notes to Consolidated Financial Statements

(a)(2) Financial Statement Schedules.

F-2

F-4

F-5

F-6

F-7

F-8

All financial statement schedules have been omitted because they are not applicable, not required or the information 
required is shown in the financial statements or the notes thereto.

(a)(3) Exhibits.

The following is a list of exhibits filed as part of this Annual Report.

Incorporated by Reference to Filings Indicated 

Exhibit 
Number

3.1
4.1

4.2

4.3

4.4
4.5

10.1

10.2

10.3.1†

10.3.2

Exhibit Description
Articles of Association, as amended and as 
currently in effect
Deposit Agreement
Form of American Depositary Receipt 
(included in Exhibit 4.1)
Form of Warrant issued to each of the 
investors named in Schedule A thereto
Warrant Instrument issued to NPlus1 Singer 
LLP
Description of Securities
Registration Rights Agreement, dated July 
29, 2016, by and among Verona Pharma plc 
and the investors set forth therein
Registration Rights Agreement, dated July 
16, 2020, by and among Verona Pharma plc 
and the investors set forth therein
Intellectual Property Assignment and 
Licence Agreement between Vernalis 
Development Limited and Rhinopharma 
Limited, as predecessor to Verona Pharma 
plc, dated February 7, 2005

Amendment Agreement by and between 
Verona Pharma plc and Ligand UK 
Development Limited dated March 23, 2022

Form

File No.

6-K
20-F

001-38067
001-38067  

Exhibit 
No. 

Filing 
date
12/30/202
0
2.1  2/27/2018

1

Filed / 
Furnished 
Herewith

20-F

001-38067  

2.2  2/27/2018

F-1

333-217124  

4.3 

4/3/2017

F-1
10-K

333-217124  
001-38067  

4/3/2017
4.4 
4.5  2/25/2021

* 

F-1

333-217124  

10.1 

4/3/2017

6-K

001-38067  

2  7/22/2020

F-1

333-217124  

10.2 

4/3/2017

8-K

001-38067  

10.1  3/30/2022

96

Renewal Agreement to Lease by and 
between the Verona Pharma plc and Regus 
Management (UK) Limited dated September 
16, 2017#1
Renewal Agreement to Lease by and 
between the Verona Pharma plc and Regus 
Management (UK) Limited dated September 
16, 2017#2
Renewal Agreement to Lease by and 
between the Verona Pharma plc and Regus 
Management (UK) Limited dated September 
16, 2017#3
Renewal Agreement to Lease by and 
between the Verona Pharma Inc. and Regus 
Management Group LLC dated July 16, 2019
Renewal Agreement to Lease by and 
between the Verona Pharma Plc. and Regus 
Management (UK) Limited dated November 
9, 2021
Renewal Agreement to Lease by and 
between the Verona Pharma Plc. and Regus 
Management (UK) Limited dated December 
7, 2021
Agreement to Lease by and between the 
Verona Pharma Inc. and Brier Creek Office 
#4, LLC dated March 6, 2020
EMI Option Scheme
Unapproved Share Option Scheme, as 
amended
2017 Incentive Award Plan and forms of 
award agreements thereunder
Employment Agreement, dated January 28, 
2020, between Verona Pharma Inc. and 
David Zaccardelli, Pharm. D.
Employment Agreement, dated December 
21, 2019, between Verona Pharma plc and 
Kathleen Rickard
Employment Agreement, dated October 1, 
2016, between Verona Pharma plc and Claire 
Poll
Employment Agreement, dated February 1, 
2020, between Verona Pharma Inc. and Mark 
Hahn
Form of Indemnification Agreement for 
board members
Form of Indemnification Agreement for 
executive officers
Employee Change in Control Severance 
Benefit Plan
Relationship Agreement relating to Verona 
Pharma plc, dated July 29, 2016, by and 
among the Verona Pharma plc, OrbiMed 
Private Investments VI, LP and NPlus1 
Singer Advisory LLP

10.4.3

10.4.4

10.4.5

10.4.6

10.4.7

10.4.8

10.4.9
10.5#

10.6#

10.7#

10.8#

10.9#

10.11#

10.12#

10.13#

10.14#

10.15#

10.16

20-F

001-38067

4.3.3 2/27/2020

20-F

001-38067

4.3.4 2/27/2020

20-F

001-38067

4.3.5 2/27/2020

20-F

001-38067

4.3.6 2/27/2020

10-K

001-38067

10.4.7

3/7/2022

10-K

001-38067

10.4.8

3/7/2022

10-K
F-1

001-38067
333-217124  

10.4.9
10.4 

3/7/2022
4/3/2017

F-1

333-217124

10.5

4/3/2017

S-8

333-237926  

99.1  4/30/2020

20-F

001-38067  

4.7  2/27/2020

20-F

001-38067  

4.8  3/19/2019

F-1

333-217124  

10.9 

4/3/2017

F-1

333-247928   10.12  8/17/2020

F-1/A 333-217124

10.11.1 4/18/2017

F-1/A 333-217124

10.11.2 4/18/2017

8-K

001-39067

10.1 8/11/2021

F-1

333-217124

10.12

4/3/2017

*

*

*

97

Relationship Agreement relating to Verona 
Pharma plc, dated July 29, 2016, by and 
among the Verona Pharma plc, Abingworth 
Bioventures VI LP and NPlus1 Singer 
Advisory LLP
Relationship Agreement relating to Verona 
Pharma plc, dated July 29, 2016, by and 
among the Verona Pharma plc, Vivo 
Ventures Fund VII, L.P., Vivo Ventures VII 
Affiliates Fund, L.P., Vivo Ventures Fund 
VI, L.P., Vivo Ventures VI Affiliates Fund, 
L.P. and NPlus1 Singer Advisory LLP
Relationship Agreement relating to Verona 
Pharma plc, dated July 29, 2016, by and 
among the Verona Pharma plc, Vivo 
Ventures Fund VII, L.P., Vivo Ventures VII 
Affiliates Fund, L.P., Vivo Ventures Fund 
VI, L.P., Vivo Ventures VI Affiliates Fund, 
L.P. and NPlus1 Singer Advisory LLP
Loan and Security Agreement, dated as of 
November 19, 2020, by and among Silicon 
Valley Bank, Verona Pharma plc and Verona 
Pharma, Inc.
Form of Non-Executive Director letter of 
appointment

Collaboration and License Agreement, 
effective as of June 9, 2021, by and between 
Verona Pharma plc, Nuance Pharma Limited 
and Nuance (Shanghai) Pharma Co Ltd
List of Subsidiaries of Verona Pharma plc 
Consent of PricewaterhouseCoopers LLP, 
Independent Registered Public Accounting 
Firm
Rule 13a-14(a)/15d-14(a) Certification of 
Chief Executive Officer
Rule 13a-14(a)/15d-14(a) Certification of 
Chief Financial Officer
Section 1350 Certification of Chief 
Executive Officer
Section 1350 Certification of Chief Financial 
Officer
Inline XBRL Instance Document
Inline XBRL Taxonomy Extension Schema 
Document
Inline XBRL Taxonomy Extension 
Calculation Linkbase Document
Inline XBRL Taxonomy Extension Label 
Linkbase Document
Inline XBRL Taxonomy Extension 
Presentation Linkbase Document
Inline XBRL Taxonomy Extension 
Definition Linkbase Document
Cover Page Interactive Data File (formatted 
in Inline XBRL and contained in Exhibit 
101)

10.17

10.18

10.19

10.20

10.21#

10.22†
21.1

23.1

31.1

31.2

32.1

32.2
101.INS

101.SCH

101.CAL

101.LAB

101.PRE

101.DEF

104

*        Filed herewith.

98

F-1

333-217124

10.13

4/3/2017

F-1

333-217124

10.14

4/3/2017

6-K

001-38067

1 7/22/2020

6-K

001-38067

1.1

11/24/202
0

10-K

001-38067

10.2 2/25/2021

*

10-Q

001-38067

10.1

8/5/2021

*

*

*

*

**

**
*

*

*

*

*

*

*

**      Furnished herewith.

#         Indicates management contract or compensatory plan.

†                  Portions  of  this  exhibit  (indicated  by  asterisks)  have  been  omitted  pursuant  to  Regulation  S-K,  Item 
601(b)(10).  Such  omitted  information  is  not  material  and  the  registrant  customarily  and  actually  treats  such 
information  as  private  or  confidential.  Additionally,  schedules  and  attachments  to  this  exhibit  have  been  omitted 
pursuant to Regulation S-K, Items 601(a)(5).

99

Item 16. Form 10-K Summary

None

100

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.

VERONA PHARMA PLC

Date: March 7, 2023

By:

/s/ David Zaccardelli

David Zaccardelli, Pharm. D.

President and Chief 
Executive Officer

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 in the capacities and on the dates indicated.

101

/s/ David Zaccardelli

President and Chief Executive Officer

March 7, 2023

David Zaccardelli, Pharm. D.

(principal executive officer)

/s/ Mark W. Hahn

Chief Financial Officer

March 7, 2023

(principal financial and accounting officer)

Chairperson of the Board of Directors

March 7, 2023

Mark W. Hahn

/s/ David Ebsworth, Ph.D.
David Ebsworth, Ph.D.

/s/ James Brady

James Brady

/s/ Ken Cunningham, M.D.
Ken Cunningham, M.D.

/s/ Lisa Deschamps
Lisa Deschamps

/s/ Martin Edwards, M.D.
Martin Edwards, M.D.

/s/ Rishi Gupta
Rishi Gupta

/s/ Mahendra Shah, Ph.D.
Mahendra Shah, Ph.D.

/s/ Vikas Sinha
Vikas Sinha

Director

Director

Director

Director

Director

Director

Director

/s/ Anders Ullman, M.D., Ph.D.
Anders Ullman, M.D., Ph.D.

Director

102

March 7, 2023

March 7, 2023

March 7, 2023

March 7, 2023

March 7, 2023

March 7, 2023

March 7, 2023

March 7, 2023

Index

Report of Independent Registered Public Accounting Firm (PCAOB ID: 876)

Consolidated Balance Sheets as of December 31, 2022 and 2021
Consolidated Statements of Operations and Comprehensive Loss for the years ended December 31, 
2022 and 2021
Consolidated Statements of Changes in Shareholders’ Equity for the years ended December 31, 2022 
and 2021

Consolidated Statements of Cash Flows for the years ended December 31, 2022 and 2021

Notes to Consolidated Financial Statements

F-2

F-4

F-5

F-6

F-7

F-8

F-1

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of Verona Pharma plc

Opinion on the Financial Statements

We  have  audited  the  accompanying  consolidated  balance  sheets  of  Verona  Pharma  plc  and  its  subsidiary  (the 
“Company”)  as  of  December  31,  2022  and  2021,  and  the  related  consolidated  statements  of  operations  and 
comprehensive loss, of shareholders’ equity and of cash flows for the years then ended, including the related notes 
(collectively  referred  to  as  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, 2022 
and 2021, and the results of its operations and its cash flows for the years then ended in conformity with accounting 
principles generally accepted in the United States of America.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is 
to  express  an  opinion  on  the  Company’s  consolidated  financial  statements  based  on  our  audits.  We  are  a  public 
accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are 
required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the 
applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. 

We conducted our audits of these consolidated financial statements in accordance with the standards of the PCAOB. 
Those  standards  require  that  we  plan  and  perform  the  audit  to  obtain  reasonable  assurance  about  whether  the 
consolidated financial statements are free of material misstatement, whether due to error or fraud. The Company is 
not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As 
part of our audits we are required to obtain an understanding of internal control over financial reporting but not for 
the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. 
Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial 
statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures 
included  examining,  on  a  test  basis,  evidence  regarding  the  amounts  and  disclosures  in  the  consolidated  financial 
statements.  Our  audits  also  included  evaluating  the  accounting  principles  used  and  significant  estimates  made  by 
management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that 
our audits provide a reasonable basis for our opinion.

Critical Audit Matters

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated 
financial  statements  that  was  communicated  or  required  to  be  communicated  to  the  audit  committee  and  that  (i) 
relates  to  accounts  or  disclosures  that  are  material  to  the  consolidated  financial  statements  and  (ii)  involved  our 
especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter 
in  any  way  our  opinion  on  the  consolidated  financial  statements,  taken  as  a  whole,  and  we  are  not,  by 
communicating  the  critical  audit  matter  below,  providing  a  separate  opinion  on  the  critical  audit  matter  or  on  the 
accounts or disclosures to which it relates. 

Recognition of Research and Development Expenditures Related to Clinical Trial Costs

As described in Note 2 to the consolidated financial statements, the company carries out research and development 
activities  including  contracts  with  clinical  research  organizations  and  contract  manufacturers.  Research  and 
Development  expenditure  for  the  year  ended  December  31,  2022  was  $49,283  thousand,  of  which  a  significant 
portion  is  made  up  of  research  and  development  costs  from  contracts  with  clinical  research  organizations  and 
contract  manufacturers.  Management  estimates  expenses  resulting  from  obligations  under  contracts  with  vendors 
and consultants and clinical site agreements by matching expenses with the period in which services and efforts are 
expended. The Company accounts for these expenses according to the progress of the trials and other development 
activities  which  requires  management  to  apply  judgment  in  developing  assumptions  related  to  patient  progression 
and the timing of various aspects of the trial.

The principal considerations for our determination that performing procedures relating to recognition of research and 
development  expenditures  related  to  clinical  trial  costs  is  a  critical  audit  matter  are  the  judgment  required  by 
management  in  estimating  the  cost  based  upon  the  progress  of  clinical  trial  activities,  which  in  turn  led  to  a  high 
degree of auditor judgment, subjectivity and effort in performing procedures and evaluating evidence of assumptions 
related to patient progression and the timing of various aspects of the trial. 

F-2

Addressing  the  matter  involved  performing  procedures  and  evaluating  audit  evidence  in  connection  with  forming 
our  overall  opinion  on  the  consolidated  financial  statements.  These  procedures  included,  among  others,  (i)  testing 
management’s  process  for  developing  estimated  expenses  related  to  clinical  trial  activities;  (ii)  evaluating  the 
appropriateness  of  the  method  used  by  management  to  develop  the  estimates;  (iii)  testing  the  completeness  and 
accuracy  of  the  underlying  data  used  by  management;  and  (iv)  evaluating  the  reasonableness  of  significant 
assumptions related to patient progression and the timing of various aspects of the trial. Evaluating management’s 
assumptions involved considering the associated clinical trial timelines, patient progression, invoicing to date, and 
the provisions of the related contracts.

/s/ PricewaterhouseCoopers LLP 
Reading, United Kingdom
March 7, 2023

We have served as the Company's auditor since 2015.

F-3

Verona Pharma plc
Consolidated Balance Sheets
(in thousands, except share amounts, per share amounts and par value of shares)

ASSETS

Current assets:

Cash and cash equivalents 
Prepaid expenses
Tax incentive receivables

Other current assets

Total current assets

Non-current assets:

Furniture and equipment, net
Goodwill
Equity interest

Right-of-use assets

Total non-current assets:

Total assets

LIABILITIES AND SHAREHOLDERS’ EQUITY

Current liabilities:
Accounts payable
Accrued expenses 
Current operating lease liabilities

Taxes payable
Other current liabilities

Total current liabilities

Non-current liabilities:

Term loan
Non-current operating lease liabilities

Total non-current liabilities

Total liabilities

Commitments and contingencies 

Shareholders' equity

December 31,

2022

2021

$ 

227,827  $ 
2,499 
9,282 
3,388 
242,996 

148,380 
4,037 
15,583 
2,063 
170,063 

$ 

$ 

73 
545 
15,000 
854 
16,472 
259,468  $ 

80 
545 
15,000 
899 
16,524 
186,587 

2,910  $ 
13,752 
675 
283 
1,409 
19,029 

9,768 
205 
9,973 
29,002 

10,044 
22,256 
648 
147 
327 
33,422 

4,874 
286 
5,160 
38,582 

Ordinary £0.05 par value shares: 631,338,246 and 489,177,550 issued, and 
606,301,054 and 480,082,966 outstanding, at December 31, 2022 and 2021, 
respectively
Additional paid-in capital
Ordinary shares held in treasury
Accumulated other comprehensive loss
Accumulated deficit 

Total shareholders' equity

Total liabilities and shareholders' equity

40,526 

31,855 

529,187 

(1,549)   
(4,601)   
(333,097)   
230,466 
259,468  $ 

385,070 
(603) 
(4,601) 
(263,716) 
148,005 
186,587 

$ 

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

F-4

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Verona Pharma plc
Consolidated Statements of Operations and Comprehensive Loss
(in thousands, except per share amounts)

Revenue

Cost of sales

Gross profit
Operating expenses:

Research and development

Selling, general and administrative

Total operating expenses

Operating loss

Other income/(expense):

Research and development tax credit

Loss on extinguishment of debt

Interest income

Interest expense

Fair value movement on warrants

Foreign exchange (loss)/gain

Total other income, net

Loss before income taxes

Income tax (expense)/income

Net loss

Loss per ordinary share — basic and diluted

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

Year ended December 31,

2022

2021

$ 

458  $ 

40,000 

(346)   

112 

— 

40,000 

49,283 

26,579 

75,862 

79,406 

33,907 

113,313 

(75,750)   

(73,313) 

9,634

(815)

2,821

(521)

—

(3,817)   

15,630

—

14

(340)

2,246

176 

7,302 

17,726 

(68,448)   

(55,587) 

(253)   

18 

$ 
$ 

(68,701)  $ 
(0.13)  $ 

(55,569) 
(0.12) 

F-5

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Verona Pharma plc
Consolidated Statements of Shareholders’ Equity
(in thousands except share data)

Ordinary shares

Number

Amount

Additional 
paid-in 
capital

Ordinary 
shares held 
in treasury

Accumulated 
other 
comprehensive 
loss

Accumulated 
deficit

Total 
shareholders' 
equity

 488,304,446  $ 31,794  $ 366,411  $  (1,700)  $ 

— 

— 

— 

— 

(4,601)  $ (207,050)  $  184,854 
(55,569) 
(55,569)   

— 

873,104 

— 

— 

61 

— 

672 

— 

— 

1,097 

— 

  25,425 

— 

— 

— 

— 

— 

(1,097)   

733 

— 

— 

25,425 

— 

— 

(6,850)   

— 

— 

— 

(6,850) 

— 

— 

(588)   

— 

— 

— 

(588) 

 489,177,550  $ 31,855  $ 385,070  $ 

— 

— 

— 

(603)  $ 
— 

(4,601)  $ (263,716)  $  148,005 
(68,701) 
(68,701)   

— 

 114,080,000 

  6,918 

  133,279 

— 

— 

— 

140,197 

80,696 

5 

 28,000,000 

  1,748 

62 

— 

— 

1,250 

— 

(1,748)   

680 

122 

— 

— 

— 

— 

— 

— 

— 

— 

(680)   

67 

— 

— 

— 

— 

1,372 

14,121 

— 

— 

— 

— 

— 

— 

  14,121 

— 

— 

(4,723)   

— 

— 

— 

(4,723) 

— 

— 

128 

— 

— 

— 

128 

 631,338,246  $ 40,526  $ 529,187  $  (1,549)  $ 

(4,601)  $ (333,097)  $  230,466 

Balance at January 1, 
2021

Net loss
Issuance of 
common shares 
under at-the-market 
sales agreement
Restricted share 
units vested
Share-based 
compensation
Common shares 
withheld for taxes 
on vested stock 
awards
Equity settled share-
based compensation 
reclassified as cash-
settled

Balance at December 
31, 2021

Net loss
Issuance of ordinary 
shares, net of 
issuance costs
Issuance of 
common shares 
under at-the-market 
sales agreement
Issuance of ordinary 
shares to treasury
Restricted share 
units vested
Share options 
exercised
Share-based 
compensation
Common shares 
withheld for taxes 
on vested stock 
awards
Equity settled share-
based compensation 
reclassified as cash-
settled

Balance at December 
31, 2022

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

F-6

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Verona Pharma plc
Consolidated Statements of Cash Flows
(in thousands)

Operating activities:

Net loss:
Adjustments to reconcile net income to net cash used in operating activities:
Foreign exchange loss/(gain)
Amortization of debt issue costs
Accretion of redemption premium on debt
Loss on extinguishment of debt
Fair value movement on warrants 
Share-based compensation
Depreciation and amortization

Equity interest recognized as revenue

Changes in operating assets and liabilities:
Prepaid expenses
Tax incentive receivables
Other current assets
Right-of-use assets
Accounts payable
Accrued expenses 
Operating lease liabilities

Taxes payable
Other current liabilities

Net cash used in operating activities

Cash flows from investing activities:

Purchases of furniture and equipment
Net cash used in investing activities

Cash flows from financing activities:

Proceeds from issuance of ordinary shares
Payment of offering costs in connection with the issuance of ordinary shares
Proceeds from issuance of Oxford Term Loan
Oxford Term Loan issuance costs

Repayment of SVB Term Loan
SVB Term Loan repayment costs
Payments of withholding taxes from share-based awards
Proceeds from exercise of share options

Net cash provided by/(used in) financing activities

Effect of exchange rate changes on cash and cash equivalents

Net change in cash and cash equivalents

Cash and cash equivalents at beginning of the year
Cash and cash equivalents at end of the year
Supplemental disclosure of cash flow information:

Income taxes paid
Interest paid

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

F-7

Year ended December 31,

2022

2021

$ 

(68,701)  $ 

(55,569) 

3,817 
80 
108 
815 
— 
14,121 
636 
— 

1,538 
3,964 
(1,325)   
— 
(7,146)   
(8,504)   
(597)   
136 
1,196 
(59,862)   

(176) 
114 
125 
— 
(2,246) 
25,425 
629 
(15,000) 

501 
(6,924) 
(343) 
(440) 
9,866 
11,389 
(373) 
147 
(379) 
(33,254) 

(29)   
(29)   

(12) 
(12) 

149,797 

(9,533)   
10,000 

(245)   
(5,000)   
(850)   
(4,723)   
1,372 
140,818 

(1,480)   
79,447 
148,380 
227,827  $ 

733 
— 
— 
— 
— 
— 
(6,850) 
— 
(6,117) 
(223) 
(39,606) 
187,986 
148,380 

120  $ 
348  $ 

1 
215 

$ 

$ 
$ 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Verona Pharma plc
Notes to Consolidated Financial Statements 

Note 1 - Organization and description of business operations 

Verona Pharma plc (the "Company") is incorporated and domiciled in the United Kingdom. Verona Pharma plc has 
one  wholly-owned  subsidiary,  Verona  Pharma, 
Inc.,  a  Delaware  corporation.  Rhinopharma  Limited 
(“Rhinopharma”),  a  Canadian  company  that  was  previously  a  non-operating,  wholly-owned  subsidiary,  was 
dissolved  in  June  2021.  The  address  of  the  registered  office  is  1  Central  Square,  Cardiff,  CF10  1FS,  United 
Kingdom.

The  Company  is  a  clinical-stage  biopharmaceutical  group  focused  on  developing  and  commercializing  innovative 
therapeutics  for  the  treatment  of  respiratory  diseases  with  significant  unmet  medical  needs.  The  Company’s 
American  Depositary  Shares  (“ADSs”)  are  listed  on  the  Nasdaq  Global  Market  (“Nasdaq”)  and  trade  under  the 
symbol “VRNA”. 

Liquidity

The  Company  has  incurred  recurring  losses  and  negative  cashflows  from  operations  since  inception,  and  has  an 
accumulated deficit of $333.1 million as of December 31, 2022. The Company expects to incur additional losses and 
negative  cash  flows  from  operations  until  its  products  potentially  gain  regulatory  approval  and  reach  commercial 
profitability, if at all.

The  Company  expects  that  its  cash  and  cash  equivalents  as  of  December  31,  2022,  will  be  sufficient  to  fund  its 
operating expenses and capital expenditure requirements for at least the next 12 months from the date of issuance.

In August 2022, the Company completed an upsized public offering of 14,260,000 ADSs, each representing eight 
ordinary shares of the Company, nominal value £0.05 per share, at a price to the public of $10.50 per ADS, which 
includes  the  exercise  in  full  by  the  underwriters  of  their  option  to  purchase  an  additional  1,860,000  ADSs.  The 
aggregate  net  proceeds  from  the  offering  were  $140.2  million  after  deducting  underwriting  discounts  and 
commissions and estimated offering expenses payable.

In  October  2022,  the  Company  entered  into  a  term  loan  of  up  to  $150.0  million  (the  “Oxford  Term  Loan”)  with 
Oxford  Finance  Luxembourg  S.À  R.L.  (“Oxford”).  This  Oxford  Term  Loan  replaced  the  Company’s  existing 
$30.0 million facility with Silicon Valley Bank. See Note 7 for further details.

In March, 2021, the Company entered into an open market sale agreement with respect to an at-the-market offering 
program  (the  “ATM  Program”)  under  which  the  Company  may  issue  and  sell  its  ordinary  shares  in  the  form  of 
ADSs, with an aggregate offering price of up to $100.0 million.

During  the  year  ended  December  31,  2021,  the  Company  sold  873,104  ordinary  shares  (equivalent  to  109,138 
ADSs)  under  the  ATM  Program,  at  an  average  price  of  approximately  $0.86  per  share  (equivalent  to  $6.91  per 
ADS), raising aggregate net proceeds of $0.7 million after deducting issuance costs. As of December 31, 2021, there 
remained $99.3 million of ordinary shares, in the form of ADSs, available for sale under the ATM Program.

During the year ended December 31, 2022, the Company sold 80,696 ordinary shares (equivalent to 10,087 ADSs) 
under  the  ATM  Program,  at  an  average  price  of  approximately  $0.86  per  share  (equivalent  to  $6.86  per  ADS), 
raising  aggregate  net  proceeds  of  $0.1  million  after  deducting  issuance  costs.  As  of  December  31,  2022,  there 
remained $99.2 million of ordinary shares, in the form of ADSs, available for sale under the ATM Program.

Additionally,  between  January  1,  2023  and  March  3,  2023,  the  Company  sold  20,321,384  ordinary  shares 
(equivalent  to  2,540,173  ADSs)  under  the  ATM  Program,  at  an  average  price  of  approximately  $2.88  per  share 
(equivalent to $23.08 per ADS), raising aggregate net proceeds of $56.9 million after deducting issuance costs. As 
of March 3, 2023, there remained $40.6 million of ordinary shares, in the form of ADSs, available for sale under the 
ATM Program.

The  Company’s  commercial  revenue,  if  any,  will  be  derived  from  sales  of  products  that  we  do  not  expect  to  be 
commercially available within the next year, if ever. Additionally, we may enter into out-licensing transactions from 
time to time but there can be no assurance that the company can secure such transactions in the future. Accordingly, 
we may need to obtain substantial additional funds to achieve our business objectives including to further advance 
clinical  and  regulatory  activities,  to  fund  prelaunch  and  launch  related  costs  and  to  create  an  effective  sales  and 
marketing organization to commercialize ensifentrine. Any such additional funding will need to be obtained through 
public  or  private  financings,  debt  financing,  collaboration  or  licensing  agreements  and  other  arrangements. 
However, there is no guarantee that we will be successful in securing additional capital on acceptable terms, or at all.

F-8

Verona Pharma plc
Notes to Consolidated Financial Statements 

Note 2 - Basis of Presentation and Summary of Significant Accounting policies

Basis of presentation and consolidation

The consolidated financial statements include the accounts of Verona Pharma plc and its wholly-owned subsidiaries 
Verona  Pharma,  Inc.  and  Rhinopharma  through  to  its  dissolution  in  June  2021.  All  inter-company  balances  and 
transactions have been eliminated. 

The  consolidated  financial  statements  have  been  prepared  in  accordance  with  accounting  principles  generally 
accepted in the United States ("U.S. GAAP") and the following accounting policies have been consistently applied.

At the end of the second quarter of 2020, the Company determined that it no longer qualified as a Foreign Private 
Issuer under SEC rules. As a result, beginning January 1, 2021, the Company was required to report with the SEC on 
domestic forms and comply with domestic company rules in the United States. The transition to U.S. GAAP was 
made retrospectively for all periods from the Company’s inception.

Use of estimates

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make 
estimates and assumptions that affect the reported amounts of assets, liabilities, the disclosure of contingent assets 
and liabilities at the date of the consolidated financial statements and the reported amounts of expenses during the 
reporting periods. Significant estimates and assumptions reflected in these consolidated financial statements include, 
but are not limited to, the accrual and prepayment of research and development expenses and the fair value of share-
based compensation. Estimates are periodically reviewed in light of changes in circumstances, facts and experience. 
Changes in estimates are recorded in the period in which they become known. Actual results could differ from the 
Company’s estimates.

Business combinations

The  Company  applies  the  acquisition  method  to  account  for  business  combinations.  The  consideration  transferred 
for  the  acquisition  of  a  subsidiary  is  the  fair  value  of  the  assets  transferred,  the  liabilities  incurred  to  the  former 
owners of the acquiree and the equity interests issued by the Company. The consideration transferred includes the 
fair value of any asset or liability resulting from a contingent consideration arrangement. The excess of the cost of 
acquisition over the fair value of the Company's share of the identifiable net assets acquired is recorded as goodwill. 

Identifiable assets acquired and liabilities and contingent liabilities assumed in a business combination are measured 
initially at their fair values at the acquisition date. Acquisition-related costs are expensed as incurred and included in 
administrative expenses.

Cash and cash equivalents

The  Company  considers  all  highly  liquid  investments  purchased  with  original  maturities  of  ninety  days  or  less  at 
acquisition to be cash equivalents. Cash and cash equivalents includes deposits held at call with banks, and in money 
market funds investing in U.S. and U.K. government debt and liquid securities from highly rated institutions.

Equity interest

As part of the Nuance Agreement, the Company received an equity interest in Nuance Biotech, the parent company 
of  Nuance  Pharma  (see  Note  8).  As  Nuance  Biotech’s  securities  are  not  publicly  traded  the  equity  interest’s  fair 
value is not readily determinable. The Company therefore follows guidance from ASC 321-10-35-2 and uses the fair 
value measurement alternative and measures the securities at cost, which is deemed to be the value indicated by the 
last observable transaction in Nuance Biotech's stock, subject to impairment. The valuation will be adjusted for any 
observable price changes in orderly transactions for an identical or similar investment in Nuance Biotech, or if there 
is an indicator of impairment.

Furniture and equipment, net

Furniture and equipment comprise office furniture and computer equipment and are stated at cost less accumulated 
depreciation, which is calculated on a straight-line basis over the expected useful economic lives, generally two to 
five years.

F-9

Verona Pharma plc
Notes to Consolidated Financial Statements 

Goodwill

Goodwill consists of goodwill related to the acquisition of Rhinopharma. Goodwill is not amortized but periodically 
tested for impairment.

Impairment of long-lived assets

The Company reviews long-lived assets for impairment annually or whenever events or changes in circumstances 
indicate that the carrying amount of assets may not be fully recoverable. 

Revenue recognition

The  Company’s  revenue  consists  of  revenue  from  the  Company’s  strategic  agreements  for  the  development  and 
commercialization  of  ensifentrine.  The  terms  of  the  agreements  typically  include  non-refundable  upfront  fees, 
payments based upon achievement of milestones and eventually revenue from the commercialized product. These 
agreements  usually  have  both  fixed  and  variable  consideration.  Non-refundable  upfront  fees  are  considered  fixed, 
while milestone payments and revenue from the commercialized product are identified as variable consideration.

In  determining  the  appropriate  amount  of  revenue  to  be  recognized  as  it  fulfills  its  obligations  under  agreements 
within the scope of ASC Topic 606, the Company performs the following steps: (i) identification of the promised 
goods  or  services  in  the  contract;  (ii)  determination  of  whether  the  promised  goods  or  services  are  performance 
obligations  including  whether  they  are  distinct  in  the  context  of  the  contract;  (iii)  measurement  of  the  transaction 
price, including the constraint on variable consideration; (iv) allocation of the transaction price to the performance 
obligations  based  on  estimated  selling  prices;  and  (v)  recognition  of  revenue  when  (or  as)  the  Company  satisfies 
each performance obligation. 

A performance obligation is a promise in a contract to transfer a distinct good or service to the customer and is the 
unit  of  account  in  ASC  Topic  606.  The  Company’s  performance  obligations  include  intellectual  property  rights, 
(which  include  the  license,  patents  and  developmental  and  regulatory  data)  and  manufacturing  and  supply. 
Management  are  required  to  judge  when  performance  obligations  are  satisfied  and  consequently  when  revenue  is 
recognized.

The  Company  allocates  the  total  transaction  price  to  each  performance  obligation  based  on  the  estimated  relative 
standalone selling prices of the promised goods or service underlying each performance obligation. 

For  arrangements  with  licenses  of  intellectual  property  that  include  sales-based  royalties,  including  milestone 
payments based on the level of sales, and the license is deemed to be the predominant item to which the royalties 
relate, the Company recognizes royalty revenue and sales-based milestones at the later of (i) when the related sales 
occur, or (ii) when the performance obligation to which the royalty has been allocated has been satisfied. If the right 
to the Company’s intellectual property is determined to be distinct from the other performance obligations identified 
in the arrangement, the Company recognizes revenue from non-refundable, upfront fees allocated to the right when 
the right is transferred to the customer, and the customer can use and benefit from the right.

At  the  inception  of  the  arrangement,  the  Company  evaluates  whether  the  development  milestones  are  considered 
probable of being achieved and estimates the amount to be included in the transaction price using the most likely 
amount method. If it is probable that a significant revenue reversal would not occur, the associated milestone value 
is  included  in  the  transaction  price.  Milestone  payments  that  are  not  within  the  control  of  the  Company,  such  as 
approvals from regulators, are not considered probable of being achieved until those approvals are received.

Research and development costs

Research  and  development  (“R&D”)  costs  are  expensed  as  incurred.  Research  and  development  expenses  include 
salaries,  share-based  compensation  and  benefits  of  employees,  and  other  costs  related  to  the  Company’s  R&D 
activities,  including  contracts  with  clinical  research  organizations  and  contract  manufacturers.  The  Company  is 
required  to  estimate  its  expenses  resulting  from  its  obligations  under  contracts  with  vendors  and  consultants  and 
clinical  site  agreements  in  connection  with  its  R&D  efforts.  The  financial  terms  of  these  contracts  are  subject  to 
negotiations  which  vary  contract  to  contract  and  may  result  in  payment  flows  that  do  not  match  the  periods  over 
which  materials  or  services  are  provided  to  the  Company  under  such  contracts.  The  Company’s  objective  is  to 
reflect  the  appropriate  clinical  trial  expenses  in  its  consolidated  financial  statements  by  matching  those  expenses 
with the period in which services and efforts are expended. The Company accounts for these expenses according to 
the progress of the trials and other development activities. Judgment is applied in determining assumptions related to 
patient progression and the timing of various aspects of the trial used to measure progress. The Company determines 
prepaid and accrual estimates through discussions with applicable personnel and outside service providers as to the 
progress of clinical trials, or other services completed. During the course of a clinical trial, the Company adjusts its 

F-10

Verona Pharma plc
Notes to Consolidated Financial Statements 

rate of clinical trial expense recognition if actual results differ from its estimates. The Company makes estimates of 
its prepaid and accrued expenses as of each balance sheet date in its consolidated financial statements based on facts 
and circumstances known at that time. Although the Company does not expect its estimates to be materially different 
from  amounts  actually  incurred,  its  understanding  of  the  status  and  timing  of  services  performed  relative  to  the 
actual status and timing of services performed may vary and may result in the Company reporting amounts that are 
too high or too low for any particular period. The Company’s clinical trial prepaid and accrual expense is dependent 
upon  the  timely  and  accurate  reporting  of  study  recruitment  from  contract  research  organizations  and  activities 
carried  out  by  other  third-party  vendors  as  well  as  the  timely  processing  of  any  change  orders  from  the  contract 
research organizations.

Share-based compensation

The  Company  has  a  share-based  compensation  plan  under  which  various  types  of  equity-based  awards  may  be 
granted, including stock options and restricted stock units (RSUs). The fair value of share options and RSUs, which 
are  subject  to  milestone  or  service  conditions  with  graded  vesting,  are  recognized  as  compensation  expense  on  a 
straight-line basis using the graded-vesting method; forfeitures are recognized as they occur.

The  Company  uses  the  fair-value  based  method  to  determine  compensation  for  all  arrangements  under  which 
employees receive shares. The fair value of each option and RSU is estimated on the date of grant using the Black-
Scholes valuation model that uses assumptions for expected volatility, expected dividends, expected term, and the 
risk-free interest rate. Expected volatility is based on the historical volatility of the Company’s ordinary shares over 
the  expected  term  of  the  options.  The  expected  term  of  options  granted  is  derived  using  the  simplified  method, 
which computes the expected term as the average of the sum of the vesting term plus the contract term. Historically 
the risk-free rate has been based on the appropriate U.K. government debt yield. After delisting its Ordinary shares 
from AIM on October 30, 2020, the Company used U.S. government debt yields.

Details of the assumptions used are set out in Note 9 to the consolidated financial statements.

F-11

Verona Pharma plc
Notes to Consolidated Financial Statements 

Other income - United Kingdom R&D tax credits 

Other income relates to R&D tax credits receivable in the UK. As a company that carries out extensive research and 
development  activities,  Verona  is  subject  to  the  UK  R&D  Small  and  Medium  Enterprise  (“SME”)  Program. 
Qualifying  expenditures  largely  comprise  employment  costs  for  research  staff,  consumables,  a  proportion  of 
relevant,  permitted  sub-contract  costs  and  certain  internal  overhead  costs  incurred  as  part  of  research  projects  for 
which it does not receive income. 

Tax credits related to the SME Program are received as cash and are recorded as other income, as they are akin to 
grant income, in the consolidated statements of operations and comprehensive loss.

Income taxes

The  Company  accounts  for  income  taxes  in  accordance  with  ASC  740,  “Income  Taxes”  (“ASC  740”).  ASC  740 
prescribes the use of the liability method, whereby deferred tax assets and liability account balances are determined 
based on differences between financial reporting and tax bases of assets and liabilities and are measured using the 
enacted tax rates and laws that will be in effect when the differences are expected to reverse.

The Company provides a valuation allowance, if necessary, to reduce deferred tax assets to their estimated realizable 
value. ASC 740 establishes a single model to address accounting for uncertain tax positions. ASC 740 clarified the 
accounting  for  income  taxes  by  prescribing  the  minimum  recognition  threshold  a  tax  position  is  required  to  meet 
before being recognized in the financial statements. The Company has no uncertain tax positions.

Comprehensive loss

The  Company  accounts  for  comprehensive  loss  in  accordance  with  ASC  220,  “Income  Statement  -  Reporting 
Comprehensive  Income”.  Comprehensive  income  represents  all  changes  in  stockholders’  equity  during  the  period 
except those resulting from investments by, or distributions to, stockholders.

Segment Reporting

The Company has one operating and reportable segment, pharmaceutical development. The Company’s long-lived 
assets are held in the United Kingdom.

Foreign Currencies

Reporting and functional currencies

The  consolidated  financial  statements  are  reported  in  U.S.  dollars,  which  is  also  the  functional  currency  of  our 
subsidiary.  Transactions  in  foreign  currencies  are  remeasured  into  our  functional  currency  at  the  rate  of  exchange 
prevailing  at  the  date  of  the  transaction.  Any  monetary  assets  and  liabilities  arising  from  these  transactions  are 
remeasured  into  our  functional  currency  at  exchange  rates  prevailing  at  the  balance  sheet  date  or  on  settlement. 
Resulting gains and losses are recorded in foreign exchange loss in our consolidated statements of operations.

F-12

Verona Pharma plc
Notes to Consolidated Financial Statements 

Treasury shares

In the year ended December 31, 2020, the Company incorporated a trust to facilitate the acquisition of shares, by or 
for  the  benefit  of  employees  and  former  employees.  In  the  year  ended  December  31,  2022,  the  Company  issued 
28.0 million ordinary shares (equivalent to 3.5 million ADSs) to cover expected shares issued upon the vesting of 
share awards to employees. The Company issued no ordinary shares in the year ended December 31, 2021.

The Company has the indirect ability to control the trust as trustees are required to act in accordance with the trust 
deed  and  because  the  Company  controls  the  issuance  of  shares  to  cover  awards.  As  a  consequence,  the  trust  is 
consolidated into the Company’s consolidated financial statements. The shares that were issued to the trust that have 
not been issued to employees to satisfy vesting of share awards are included in the Consolidated Balance Sheets as 
treasury shares.

Fair value of financial instruments

US  GAAP  defines  fair  value  and  requires  companies  to  establish  a  framework  for  measuring  fair  value  and 
disclosure  about  fair  value  measurements  using  a  three-tier  approach.  These  tiers  include:  Level  1,  defined  as 
observable  inputs  such  as  quoted  prices  in  active  markets;  Level  2,  defined  as  inputs  other  than  quoted  prices  in 
active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which 
little or no market data exists, therefore requiring an entity to develop its own assumptions.

Our  financial  instruments  include  cash  equivalents,  an  equity  interest,  other  assets,  accounts  payable  and  accrued 
expenses and other liabilities. Fair value estimates of these instruments are made at a specific point in time, based on 
relevant market information. These estimates may be subjective in nature and involve uncertainties and matters of 
significant judgement and therefore cannot be determined with precision. The equity interest is held at cost subject 
to  impairment,  following  guidance  from  ASC  321-10-35-2.  The  carrying  amounts  of  the  other  instruments  are 
considered to be representative of their fair values because of their short-term nature.

Concentration of credit risk

Financial instruments that potentially subject the Company to concentration of credit risk consist of principally cash 
and cash equivalents, bank deposits and certain receivables. 

The  Company  holds  cash  and  cash  equivalents  with  highly  rated  financial  institutions  and  in  highly  rated  money 
market  funds  and  the  Company  has  not  experienced  any  significant  credit  losses  in  these  accounts  and  does  not 
believe the Company is exposed to any significant credit risk on these instruments.

Lease accounting 

The company accounts for leases in accordance with ASU No. 2016-02, “Leases” (Topic 842) (“ASC 842”). The 
standard requires lessees to recognize almost all leases on the balance sheet as right-of-use (“ROU”) assets and lease 
liabilities, and requires leases to be classified as either operating or finance type leases. 

Under ASC 842, the Company determines if an arrangement is a lease at inception. ROU assets and liabilities are 
recognized at the commencement date based on the present value of remaining lease payments. For this purpose, the 
Company considers only payments that are fixed and determinable at the time of commencement.

As the Company's leases do not provide an implicit rate, the Company determines the incremental borrowing rate in 
calculating  the  present  value  of  lease  payments.  The  ROU  assets  also  include  any  lease  payments  made  prior  to 
commencement and are recorded net of any lease incentives received. 

The Company’s lease terms may include options to extend or terminate the lease. When it is reasonably certain the 
Company will exercise such options the lease will be recognized as a liability and a corresponding ROU asset also 
recognized.

Operating leases are included in Right-of-use assets and in Current and non-current operating lease liabilities on the 
Company's Consolidated Balance Sheets.

F-13

Verona Pharma plc
Notes to Consolidated Financial Statements 

Recently issued accounting pronouncements, not yet adopted

In  June  2016,  the  FASB  issued  ASU  2016-13,  Financial  Instruments-Credit  Losses  (Topic  326)-Measurement  of 
Credit Losses on Financial Instruments. This guidance replaces the current incurred loss impairment methodology. 

Under  the  new  guidance,  on  initial  recognition  and  at  each  reporting  period,  an  entity  is  required  to  recognize  an 
allowance  that  reflects  its  current  estimate  of  credit  losses  expected  to  be  incurred  over  the  life  of  the  financial 
instrument based on historical experience, current conditions and reasonable and supportable forecasts. In November 
2019,  the  FASB  issued  ASU  No.  2019-10,  Financial  Instruments  -  Credit  Losses  (Topic  326),  Derivatives  and 
Hedging (Topic 815), and Leases (Topic 842): Effective Dates (“ASU 2019-10”). The purpose of this amendment is 
to create a two tier rollout of major updates, staggering the effective dates between larger public companies and all 
other  entities.  This  granted  certain  classes  of  companies,  including  Smaller  Reporting  Companies  (“SRCs”), 
additional time to implement major FASB standards, including ASU 2016-13. Larger public companies will have an 
effective  date  for  fiscal  years  beginning  after  December  15,  2019,  including  interim  periods  within  those  fiscal 
years.  All  other  entities  are  permitted  to  defer  adoption  of  ASU  2016-13,  and  its  related  amendments,  until  fiscal 
periods beginning after December 15, 2022. Under the current SEC definitions, we meet the definition of an SRC as 
of the ASU 2019-10 issuance date and are deferring adoption for ASU 2016-13. The guidance requires a modified 
retrospective transition approach through a cumulative-effect adjustment to retained earnings as of the beginning of 
the period of adoption. We are currently evaluating the impact of the adoption of ASU 2016-13 on our consolidated 
financial statements, but do not believe the adoption of this standard will have a material impact on our consolidated 
financial statements.

Other accounting standards that have been issued by the FASB or other standards-setting bodies that do not require 
adoption until a future date are not expected to have a material impact on the Company’s financial statements upon 
adoption.

Note 3 - Prepaid expenses 

Prepaid expenses consisted of the following (in thousands):

Clinical trial and other development costs
Insurance
Other 
Total prepaid expenses

December 31,

2022

2021

$ 

$ 

38  $ 

2,027 
434 
2,499  $ 

2,169 
1,555 
313 
4,037 

F-14

 
 
 
 
Verona Pharma plc
Notes to Consolidated Financial Statements 

Note 4 - Property leases

The  right-of-use  assets  (“ROU”)  relate  to  rented  office  space  in  London,  North  Carolina  and  Georgia  with  leases 
ending in 2023, 2024 and 2025, respectively.

In the year ended December 31, 2022, the Company entered into a lease arrangement in Georgia for office space and 
extended its existing London lease and recognized lease liability and corresponding ROU asset of $0.7 million.

In  the  year  ended  December  31,  2021,  the  Company  extended  its  existing  London  lease.  As  a  consequence  it 
modified its accounting for the lease and recorded $0.6 million lease liability and corresponding ROU asset.

To calculate lease liabilities the Company used a weighted average discount rate of 4% and 8% for the years ended 
December  31,  2022  and  December  31,  2021,  respectively.  The  weighted  average  remaining  lease  term  as  of 
December 31, 2022 and December 31, 2021 was 1.5 and 1.8 years, respectively.

Minimum annual payments over the remaining lease periods as of December 31, 2022 are as follows (in thousands):

2023
2024
2025
Total minimum future lease payments
Less: imputed interest
Total operating lease liabilities

$ 

$ 

$ 

675 
215 
17 
907 
(27) 
880 

The total operating lease expense included in selling, general and administrative costs was $0.6 million.

Note 5 - Accrued expenses

Accrued expenses consisted of the following (in thousands):

Clinical trial and other development costs
Professional fees, listing and general corporate costs
People related costs
Total accrued expenses

December 31,

2022

2021

$ 

$ 

12,314  $ 
1,364 
74 
13,752  $ 

21,336 
919 
1 
22,256 

F-15

 
 
 
 
 
 
 
Verona Pharma plc
Notes to Consolidated Financial Statements 

Note 6 - Warrants

On  May  2,  2022  all  remaining  warrants  expired.  No  warrants  were  exercised  or  forfeited  in  the  years  ended 
December 31, 2022 and 2021.

In 2016, the Company issued 31,115,926 units to new and existing investors at the placing price of £1.4365 per unit. 
Each unit comprised one ordinary share and one warrant. The warrant holders could subscribe for 0.4 of an ordinary 
share  at  a  per  share  exercise  price  of  £1.7238  until  May  2,  2022.  The  warrant  holders  could  opt  for  a  cashless 
exercise of their warrants, whereby the warrant holders could choose to exchange the warrants held for a reduced 
number  of  warrants  exercisable  at  nil  consideration.  The  reduced  number  of  warrants  was  calculated  based  on  a 
formula considering the share price and the exercise price of the warrants.

If,  after  a  transaction,  should  the  warrants  be  exercisable  for  unlisted  securities,  the  warrant  holders  were  able  to 
demand  a  cash  payment  instead  of  the  delivery  of  the  underlying  securities.  Accordingly,  the  warrants  were 
accounted for as a liability under ASC 480 “Distinguishing Liabilities from Equity”. The warrants were measured at 
fair value, classified as Level 3 in the fair value hierarchy, with movements recorded in other income/(expense) in 
the Consolidated Statements of Operations and Comprehensive Loss.

At  December  31,  2021,  31,003,155  warrants  remained  outstanding  and  entitled  the  investors  to  subscribe  for,  in 
aggregate, a maximum of 12,401,262 ordinary shares.

The warrants had no intrinsic value as at December 31, 2021.

There have been no changes in valuation techniques or transfers between fair value measurement levels during the 
years ended December 31, 2022 and 2021. There has been no change in fair value between December 31, 2021, and 
May 2, 2022 (expiration). The warrants were valued using the Black-Scholes model and the table below presents the 
assumptions used:

Exercise price in pounds sterling
Risk-free interest rate
Expected term to exercise
Annualized volatility
Dividend rate
Calculated value of the warrants, in thousands of U.S. dollars

The following table shows the movement of the value of the warrants (in thousands):

At January 1
Fair value adjustment

At December 31

December 31,

2021
1.7238 

£ 

 0.07 %
0.33
 51.6 %
 — %

$ 

— 

December 31,

2021

$ 

$ 

2,246 

(2,246) 

— 

F-16

 
Verona Pharma plc
Notes to Consolidated Financial Statements 

Note 7 - Term loan

In November 2020, the Company entered into a term loan facility of up to $30.0 million (the “SVB Term Loan”), 
consisting  of  advances  of  $5.0  million  funded  at  closing  and  $10.0  million  and  $15.0  million  contingent  upon 
achievement of certain clinical development milestones and other specified conditions. 

The SVB Term Loan was categorized within Level 3 of the fair value hierarchy and the carrying amount of the debt 
approximated its fair value based on prevailing interest rates as of December 31, 2021.

On  October  14,  2022  (the  “Effective  Date”),  the  Company  entered  into  a  loan  and  security  agreement  (the  “Loan 
Agreement”)  with  Oxford  Finance  Luxembourg  S.À  R.L.  (“Oxford”)  for  an  aggregate  amount  of  up  to 
$150.0 million (the “Oxford Term Loan”). The Oxford Term Loan provides for an initial term loan advance in an 
aggregate  amount  of  $10.0  million  funded  on  the  Effective  Date  (the  “Oxford  Term  A  Loan”),  and  up  to  four 
additional term loan advances in an aggregate amount of $140.0 million, which are available as described below and 
subject  to  terms  of  the  Loan  Agreement.  The  proceeds  from  the  Oxford  Term  Loan  will  be  used  for  general 
corporate and working capital purposes, and a portion of the proceeds of the Oxford Term A Loan have been used to 
repay in full the existing outstanding indebtedness owed to SVB.

The four additional term loan advances under the Oxford Term Loan consist of: a $10.0 million term loan advance 
(the  “Oxford  Term  B  Loan”)  which  is  available  at  the  option  of  the  Company  from  the  Effective  Date  up  to  and 
including  March  31,  2023;  a  $20.0  million  term  loan  advance  (the  “Oxford  Term  C  Loan”)  available  during  the 
period  commencing  on  the  later  of  January  1,  2024  and  the  date  on  which  the  Company  receives  positive 
ENHANCE-1 data in the Phase 3 clinical trial for ensifentrine sufficient to support the submission of a New Drug 
Application (“NDA”) with the United States Food and Drug Administration (the “FDA”) for ensifentrine through 
and including March 29, 2024; a $60.0 million term loan advance (the “Oxford Term D Loan”) available during the 
period commencing on the later of October 1, 2024 and the date on which the Company receives final approval from 
the FDA for the Company’s NDA for ensifentrine up to and including December 31, 2024; and a $50.0 million term 
loan advance (the “Oxford Term E Loan”) available during the interest-only period at the Company’s request and at 
Oxford’s sole discretion.

Each advance under the Oxford Term Loan accrues interest at a floating per annum rate equal to (a) the greater of (i) 
the 1-Month CME Term SOFR reference rate on the last business day of the month that immediately precedes the 
month in which the interest will accrue and (ii) 2.38%, plus (b) 5.50% (the “Basic Rate”). In no event shall the Basic 
Rate (x) for the Oxford Term A Loan be less than 7.88% and (y) for each other advance be less than the Basic Rate 
on  the  business  day  immediately  prior  to  the  funding  date  of  such  term  advance.  The  Basic  Rate  for  the  Term  A 
Loan  for  the  period  from  the  Effective  Date  through  and  including  October  31,  2022  shall  be  8.54205%  and  the 
Basic  Rate  for  each  Term  Loan  shall  not  increase  by  more  than  2.00%  above  the  applicable  Basic  Rate  as  of  the 
funding date of each such term loan. The Oxford Term Loan provides for interest-only payments on a monthly basis 
until  the  payment  date  immediately  preceding  December  1,  2025,  if  the  Oxford  Term  D  Loan  is  not  made,  and 
December 1, 2026, if the Oxford Term D Loan is made. Thereafter, amortization payments will be payable monthly 
in equal installments of principal plus accrued interest. 

Upon repayment, whether at maturity, upon acceleration or by prepayment or otherwise, the Company shall make a 
final  payment  to  the  lenders  in  an  amount  ranging  from  1.30%  to  3.00%  of  the  aggregate  principal  balance, 
depending on the advances received under the Oxford Term Loan. The Company may prepay the Oxford Term Loan 
in full, or in part, in accordance with the terms of the Loan Agreement, which is subject to a prepayment fee of up to 
2.00%, depending on the timing of the prepayment. 

The Oxford Term Loan is secured by a lien on substantially all of the assets of the Company, other than intellectual 
property,  but  including  any  rights  to  payments  and  proceeds  from  the  sale,  licensing  or  disposition  of  intellectual 
property. The Company has also granted Oxford a negative pledge with respect to its intellectual property. The Loan 
Agreement  contains  customary  covenants  and  representations,  including  but  not  limited  to  financial  reporting 
obligations and limitations on dividends, dispositions, indebtedness, collateral, investments, distributions, transfers, 
mergers or acquisitions, taxes, corporate changes, deposit accounts, transactions with affiliates and subsidiaries. The 
Loan  Agreement  also  contains  other  customary  provisions,  such  as  expense  reimbursement,  non-disclosure 
obligations as well as indemnification rights for the benefit of Oxford.

F-17

Verona Pharma plc
Notes to Consolidated Financial Statements 

Note 8 - Significant agreements

Ligand agreement

In 2006 the Company acquired Rhinopharma and assumed contingent liabilities owed to Ligand UK Development 
Limited (“Ligand”) (formerly Vernalis Development Limited). The Company refers to the assignment and license 
agreement as the Ligand Agreement.

Ligand assigned to the Company all of its rights to certain patents and patent applications relating to ensifentrine and 
related compounds (the "Ligand Patents") and an exclusive, worldwide, royalty-bearing license under certain Ligand 
know-how to develop, manufacture and commercialize products (the "Ligand Licensed Products") developed using 
Ligand Patents, Ligand know-how and the physical stock of certain compounds.

The Company is obligated to pay a milestone payment on obtaining the first approval of any regulatory authority for 
the commercialization of a Ligand Licensed Product, low single digit royalties based on the future sales performance 
of all Ligand Licensed Products and a portion equal to a mid-twenty percent of any consideration received from any 
sub-licensees  for  the  Ligand  Patents  and  for  Ligand  know-how.  Royalties  payable  are  based  on  the  future  sales 
performance so the amount payable is unlimited.

At  the  time  each  contingency  is  resolved,  the  Company  will  record  the  contingent  consideration  payment  (or 
payable) in connection with the Ligand Agreement as an expense and will classify it within R&D expenses.

In March 2022, the Company entered into an Amendment Agreement (the “Amendment”) with Ligand whereby the 
Ligand  Agreement  was  amended  to  clarify  certain  ambiguous  terms  in  the  Ligand  Agreement.  Pursuant  to  the 
Amendment:

the  Company  agreed  to  pay  to  Ligand  (i)  $2.0  million  within  five  business  days  of  the  date  of  the 
•
Amendment and (ii) $15.0 million upon the first commercial sale of ensifentrine by the Company or a sub-licensee, 
which amount is payable in cash or, at the Company's discretion, by the issuance of Company equity of equivalent 
value, as determined based on the volume-weighted average price of the Company's American Depositary Shares on 
the Nasdaq Global Market over the ten (10) trading days including and prior to such milestone event;

•
accordance with its terms;

the  Ligand  Agreement  shall  expire  on  March  24,  2042  unless  terminated  earlier  by  either  party  in 

•
upon termination of the Ligand Agreement, any Sub-licensee (as defined in the Amendment) shall have the 
right  to  enter  into  a  direct  license  agreement  with  Ligand  for  the  portion  of  the  Program  IP  (as  defined  in  the 
Amendment) that was sub-licensed by such Sub-licensee;

•
the Company of equivalent value; and

the milestone payment may be paid in cash or, at the Company’s discretion, by issuing to Ligand shares in 

•
each  party’s  right  to  terminate  the  Ligand  Agreement  is  conditioned  upon  such  party  obtaining  a  final 
judgment of the English High Court declaring that the other party is in material breach of its obligations under the 
Ligand Agreement.

The  Company  accounted  for  the  $2.0  million  payment  at  execution  of  the  Amendment  as  selling,  general  and 
administrative  expense  in  the  consolidated  statements  of  operations  as  the  payment  is  related  to  a  contract 
modification.

Nuance agreement 

The Company entered into a collaboration and license agreement (the “Nuance Agreement”) with Nuance Pharma 
Limited  (“Nuance  Pharma”)  effective  June  9,  2021  (the  “Effective  Date”),  under  which  the  Company  granted 
Nuance  Pharma  the  exclusive  rights  to  develop  and  commercialize  ensifentrine  in  Greater  China  (China,  Taiwan, 
Hong  Kong  and  Macau).  In  return,  the  Company  received  an  unconditional  right  to  consideration  aggregating 
$40.0 million consisting of $25.0 million in cash and an equity interest, valued at $15.0 million as of the Effective 
Date,  in  Nuance  Biotech,  the  parent  company  of  Nuance  Pharma.  The  Company  is  eligible  to  receive  future 
milestone  payments  of  up  to  $179.0  million  triggered  upon  achievement  of  certain  clinical,  regulatory,  and 
commercial milestones, as well as tiered double-digit royalties as a percentage of net sales of the products in Greater 
China. The Company will recognize these milestones when it is probable that a significant revenue reversal would 
not occur.

As of December 31, 2022, the $25.0 million cash payment and $15.0 million equity interest had been received and 
the  holding  in  Nuance  Biotech  was  recorded  as  Equity  interest  on  the  Consolidated  Balance  Sheet.  The  Equity 

F-18

Verona Pharma plc
Notes to Consolidated Financial Statements 

interest  is  recorded  at  cost  as  the  Company  has  elected  to  use  the  measurement  alternative  for  equity  investments 
without readily determinable fair values. The Company will evaluate this investment for indicators of impairment 
quarterly. The Company did not identify events or changes in circumstances that may have a significant effect on the 
fair value of the investment during the year ended December 31, 2022.

Under the terms of the Nuance Agreement, at any time until three months prior to the expected submission of the 
first New Drug Application in Greater China, if (i) a third party is interested in partnering with the Company, either 
globally or in territory covering at least the United States or Europe, for the development and/or commercialization 
of ensifentrine or (ii) the Company undergoes a change of control, the Company will have an exclusive option right 
to  buy  back  the  license  granted  to  Nuance  Pharma  and  all  related  assets.  The  price  is  agreed  to  be  equal  to  the 
aggregate of (i) all prior amounts paid by Nuance Pharma to the Company in cash under the agreement and (ii) all 
development  and  regulatory  costs  incurred  and  paid  by  Nuance  Pharma  in  connection  with  the  development  and 
commercialization of ensifentrine under the Nuance Agreement multiplied by a single-digit factor range dependent 
upon achievement of certain milestones, subject to a specified maximum amount.

The  Nuance  Agreement  will  continue  on  a  jurisdiction-by-jurisdiction  and  product-by-product  basis  until  the 
expiration of royalty payment obligations with respect to such product in such jurisdiction unless earlier terminated 
by the parties. Either party may terminate the Nuance Agreement for an uncured material breach or bankruptcy of 
the other party. Nuance Pharma may also terminate the Nuance Agreement at will upon 90 days' prior written notice. 

The  Company  reviewed  the  buy-back  option  and  determined  that  because  it  is  conditional  on  a  third  party  the 
Company does not have the practical ability to exercise it and, accordingly, the contract is accounted for under ASC 
606.

The  transaction  price  at  the  Effective  Date  of  the  Nuance  Agreement  was  $40.0  million  consisting  of  the 
$25.0 million upfront cash payment and $15.0 million equity interest. Developmental and regulatory milestones, and 
the manufacture and supply of ensifentrine drug product, were not included in the transaction price as management 
determined that it is not probable that a significant reversal in the amount of cumulative revenue recognized will not 
occur. Commercial milestones and sales royalties were also excluded and will be recognized when the milestones 
are achieved or the sales occur in Greater China.

The  performance  obligations  in  the  Nuance  Agreement  include  the  grant  of  the  license  (including  the  right  to 
commercialize  ensifentrine  until  the  end  of  the  term,  the  sharing  of  certain  know  how,  and  the  sharing  of  certain 
clinical  and  regulatory  data),  and  manufacture  and  supply  of  ensifentrine  drug  product.  The  Company  has 
determined that the manufacturing and supply was not at a discount.

The Company has determined that the license and the know how shared with Nuance Pharma constitutes functional 
intellectual  property  and  that  revenue  relating  to  this  should  be  recognized  at  a  point  in  time.  Consequently,  the 
Company  determined  that  it  fulfilled  its  obligations  to  Nuance  Pharma  after  it  delivered  the  know  how  that  will 
allow  Nuance  Pharma  to  file  an  investigational  new  drug  application  in  Greater  China.  This  know  how  was 
delivered in the year ended December 31, 2021, and the $40.0 million revenue was therefore recognized as revenue 
in this period.

On  the  Effective  Date,  $4.0  million  of  costs  of  obtaining  the  contract  were  recorded  as  a  contract  asset.  As  of 
December 31, 2021, the entire cost had been recognized in the Consolidated Statements of Operations.

On  April  13,  2022,  the  Company  formalized  the  Agreement  for  the  Manufacture  and  Supply  of  ensifentrine 
(“Nuance Supply Agreement”) with Nuance Pharma. The Company determined that the manufacturing and supply 
of ensifentrine to Nuance represents a distinct and separate performance obligation, for which consideration to be 
received  is  variable  based  on  the  quantities  to  be  ordered  by  Nuance.  Revenue  earned  with  the  manufacture  and 
supply of the licensed product is, and will be, recognized as the supply is delivered to Nuance. The Company has 
determined it is acting as principal in relation to the manufacture and supply under the Agreement. In its capacity as 
principal,  the  Company  will  recognize  the  associated  revenue  on  a  gross  basis.  As  of  December  31,  2022,  the 
Company has recognized $0.5 million in relation to the clinical supply of ensifentrine to Nuance Pharma.

F-19

Verona Pharma plc
Notes to Consolidated Financial Statements 

Note 9 - Share-based compensation

The Company operates various share based incentive plans for its staff and issues ordinary shares or ADSs when 
share-based awards are exercised.

The Company records share-based compensation expense related to share options and RSUs granted to employees 
and  directors.  The  expense  is  included  in  research  and  development  and  selling,  general  and  administrative  costs, 
based on the nature of individual employees’ functions, and represents the relevant year's allocation of the expense. 
The costs of share-based compensation to employees are recognized in the consolidated statements of operations and 
comprehensive loss, together with a corresponding increase in equity over the vesting period.

Options are issued with an exercise price of the closing market price on the day before the grant and generally vest 
over a period of one to four years and the contractual life of all options is ten years. 

The  following  table  shows  the  allocation  of  share-based  compensation  between  research  and  development  and 
selling, general and administrative costs (in thousands):

Research and development
Selling, general and administrative 
Total share-based compensation

EMI Option Plan and Pre-IPO Option Plan

December 31,

2022

2021

$ 

$ 

5,420  $ 
8,701 
14,121  $ 

9,654 
15,771 
25,425 

The EMI Option Plan and the Pre-IPO Option Plan were adopted by our board of directors on September 18, 2006, 
and  July  24,  2012,  respectively.  The  total  number  of  shares  that  may  be  issued  under  these  plans  is  the  current 
number  of  outstanding  options  over  114,000  ordinary  shares,  or  14,250  ADSs,  for  the  EMI  Option  Plan  and 
1,860,000 ordinary shares, or 232,500 ADSs, for the Pre-IPO Option Plan.

No further awards have been granted under either plan since the 2017 Incentive Plan was adopted, and no further 
awards will be granted under them.

2017 Incentive Plan

The 2017 Incentive Plan was adopted by our board of directors and became effective on April 26, 2017, in order to 
grant share based compensation to certain of the Company’s directors and employees. It provides for the grant of 
stock options, RSUs, and other share-based awards to Company’s directors, officers, employees and non-employee 
directors.

In the year ended December 31, 2019, the Company modified the terms of all RSUs issued prior to January 1, 2019 
to  include  a  market  based  condition,  which  was  also  included  in  the  terms  of  RSUs  issued  during  2019.  The 
Company's  stock  price  must  be  maintained  above  the  equivalent  of  £2  per  ordinary  share  for  thirty  days  for  the 
RSUs  to  vest,  in  addition  to  the  existing  service  condition.  The  RSUs  vest  five  years  after  the  date  of  grant 
irrespective of whether the £2 market condition was met. This modification did not result in an increase in the fair 
value of the RSUs.

F-20

 
 
Verona Pharma plc
Notes to Consolidated Financial Statements 

Share option activity

The  number  of  options,  the  weighted  average  grant  date  fair  value  per  stock  option,  and  the  weighted  average 
exercise  price  are  all  shown  below  on  a  per  ordinary  shares  basis.  The  Company’s  ADSs  that  are  listed  on  the 
Nasdaq Global Market each represent eight ordinary shares.

The following table shows share option activity and includes the options outstanding from all three plans :

Outstanding at January 1, 2021
Granted
Forfeited
Outstanding at December 31, 2021
Granted
Forfeited
Exercised
Outstanding at December 31, 2022
Exercisable at December 31, 2022

Weighted 
average 
exercise price 
(1)

Weighted 
average 
remaining 
contractual 
term (years)

7.3

Aggregate 
intrinsic value 
(thousands)

6.5 $ 

950 

7.2 $ 
5.4 $ 

39,412 
18,543 

1.41 
0.72 
1.06 
1.38 
0.90 
1.04 
0.75 
1.22 
1.48 

Number of 
share options
  13,125,672  $ 
  1,696,000 
  (2,126,472)   
  12,695,200  $ 
  9,024,000 

(620,016)   
  (1,822,688)   
  19,276,496  $ 
  10,382,256  $ 

 (1) The exercise prices relate to the equivalent price for an ordinary share, calculated as one eighth of the ADS price.

The following summarizes the aggregate intrinsic value and cash receipts related to stock option exercise activity for 
the years ended December 31:

($ in thousands)
Aggregate intrinsic value of stock options exercised
Cash receipts from stock options exercised

Determining the fair value of share options and RSUs

2022

2021

$ 

2,413  $ 
1,372 

— 
— 

The  total  fair  values  of  the  options  and  RSUs  were  estimated  using  the  Black-Scholes  option-pricing  model  for 
equity-settled  compensation,  amounted  to  $19.6  million  for  instruments  granted  in  the  year  ended  December  31, 
2022 and $3.1 million for instruments granted in the year ended December 31, 2021. The cost is amortized over the 
vesting  period  of  the  options  and  RSUs  on  a  straight-line  basis  using  the  graded-vesting  method.  The  following 
assumptions were used for the Black-Scholes valuation of share options granted in 2022 and 2021.

Expected volatility

Volatility is calculated using historical weekly averages of the Company's share price over a period that is in line 
with the expected life of the options and RSUs.

Fair value of ordinary shares.

The fair value of ordinary shares has been based on the share price of the Company’s shares on AIM on the evening 
before the date of grant up until October 20, 2020 when the company delisted from AIM. Post this the fair value has 
been based on the ADS’s traded on Nasdaq on the evening before the date of grant.

Risk-free interest rate

The risk-free interest rate has been based on U.K. Government debt yield for the relevant term at the time of grant 
up  until  October  20,  2020  when  the  company  delisted  from  AIM.  After  this  appropriate  U.S  Treasury  yield  rates 
were used.

Expected term.

As the Company does not have sufficient history to estimate its expected term, the Company applied the simplified 
method of estimating the expected term of the options, as described in the SEC’s Staff Accounting Bulletins 107 and 

F-21

 
 
 
 
 
Verona Pharma plc
Notes to Consolidated Financial Statements 

110. The expected term, calculated under the simplified method, is applied to all stock options which have similar 
contractual terms. Using this method, the expected term is determined using the average of the vesting period and 
the contractual life of the stock options granted

Expected dividend

There are no expected dividends.

A summary of the weighted-average assumptions applicable to the share options granted in the applicable years is as 
follows:

Risk-free interest rate

Expected lives, years

Expected volatility

Expected dividend yield

Grant date fair value (per share)

Restricted stock units activity

The following table shows RSU activity:

Outstanding at January 1, 2021
Granted
Forfeited
Vested 
Outstanding at December 31, 2021
Granted
Forfeited
Vested
Outstanding at December 31, 2022

RSUs subject to time based vesting
RSUs subject to milestone based vesting

December 31,

2022

2021

2.09% - 
4.20%

5-7

0.79% 
-1.32%

5-7

82.50% - 
84.27%

85.35% - 
87.68%

 — %
$0.34 - 
$1.33

 — %
$0.62 - 
$0.78

Number of 
RSUs

  61,992,360  $ 
  3,030,928 
  (2,002,584)   
 (24,673,352)   
  38,347,352 
  12,877,864 
  (1,006,264)   
 (15,676,608)   
  34,542,344  $ 

Weighted 
average grant 
date fair value
0.98 
0.73 
1.04 
0.97 
0.97 
1.07 
1.03 
0.96 
1.01 

Weighted 
average 
remaining 
contractual 
term (years)

1.2

1.2

Number of 
RSUs 
outstanding
  34,028,680 
513,664 

Weighted 
average 
remaining 
vesting Period
1.2
0.0

Period in 
which the 
target must be 
achieved

n/a
2022 - 2024

The intrinsic and fair value of RSUs that vested in the years ended December 31, 2022 and 2021, was $14.3 million 
and $20.2 million, respectively.

As of December 31, 2022, total compensation cost related to share options and RSUs granted but not yet recognized 
was $20.5 million. This cost will be amortized to expense over a weighted average remaining period of 1.0 years and 
will be adjusted for subsequent forfeitures.

F-22

 
 
 
 
Verona Pharma plc
Notes to Consolidated Financial Statements 

Note 10 - Benefit plans

The Company maintains a 401(k) defined contribution retirement plan in the U.S. and a defined contribution plan in 
the  U.K.  for  its  employees  and  executive  directors.  The  assets  of  the  plans  are  held  separately  from  those  of  the 
Company in independently administered funds.

The retirement plan cost charge represents the contributions payable by the Company to the plans during the year. 
Defined  contribution  costs  during  the  years  ended  December  31,  2022  and  2021  amounted  to  $319  thousand  and 
$274 thousand, respectively. 

Note 11 - Taxation

Verona  Pharma  plc  operates  in  the  United  Kingdom  and  Verona  Pharma,  Inc.  in  the  United  States  and  they  are 
subject to income taxes in those countries. U.K. corporation tax is charged at 19% and the U.S. Federal Income tax 
rate is 21%.

The components of (profit)/loss before income taxes are as follows (in thousands): 

United States
United Kingdom
Total

The components of income tax expense are as follows (in thousands):

United States
United Kingdom
Total current tax expense/(credit)

United States
United Kingdom
Total deferred tax expense
Total income tax expense/(credit)

December 31,

2022

2021

(3,868)  $ 
72,316 
68,448  $ 

(4,850) 
60,437 
55,587 

December 31,

2022

2021

253  $ 
— 
253  $ 

— 
— 
— 
253  $ 

(18) 
— 
(18) 

— 
— 
— 
(18) 

$ 

$ 

$ 

$ 

$ 

A reconciliation of the U.K. statutory income tax rate to our effective income tax rate is as follows (in percentages):

U.K. tax rate
Non-deductible expenses
Research and development incentive
Share options exercised
Change in deferred tax valuation allowance
Other differences
Effective income tax rate

December 31,

2022

2021

 19.0 %
 (1.8) %
 (8.0) %
 2.1 %
 (11.6) %
 (0.1) %
 (0.4) %

 19.0 %
 (7.5) %
 (10.9) %
 2.6 %
 (3.0) %
 (0.1) %
 0.1 %

F-23

 
 
 
 
 
 
 
 
 
 
Verona Pharma plc
Notes to Consolidated Financial Statements 

Components of the Company’s deferred tax assets and liabilities are as follows (in thousands):

Deferred tax liabilities:
Contingent liability (1)
Total deferred tax liabilities

Deferred tax assets:
Net operating losses
IPR&D asset (1)
Future exercisable shares
Other
Total deferred tax assets

Less: valuation allowance
Deferred tax assets, net of valuation allowance

Movements in the deferred tax valuation allowance 

Valuation allowance at January 1
Change in tax rates
Increase/(decrease) in valuation allowance
Valuation allowance at December 31

December 31,

2022

2021

$ 

(34,565)  $ 
(34,565)   

(8,903) 
(8,903) 

38,893 
32,700 
11,964 

(516)   

83,041 
(48,476)   
—  $ 

26,931 
7,992 
4,228 
4 
39,155 
(30,252) 
— 

30,252  $ 
— 
18,224 
48,476  $ 

30,321 
7,353 
(7,422) 
30,252 

$ 

$ 

$ 

(1)  These  relate  to  the  difference  in  the  tax  base  of  the  IP  R&D  asset  and  assumed  contingent  liability  and  the 
financial reporting base, which is nil under U.S. GAAP.

Management has reviewed cumulative tax losses and projections of future taxable losses and determined that it is 
not  more  likely  than  not  that  they  will  be  realized.  Accordingly,  valuation  allowances  have  been  provided  over 
deferred tax assets

At  December  31,  2022  and  December  31,  2021,  the  Company  had  U.K.  net  operating  losses  (“NOLs”)  of 
$155.6 million and $104.3 million, respectively. The NOLs can be carried forward indefinitely to be offset against 
future  taxable  profits,  but  this  is  restricted  to  an  annual  £5  million  allowance  after  which  there  will  be  a  50% 
restriction in the profits that can be covered by losses brought forward.

The Company files separate income tax returns in the U.K. and the U.S. All necessary income tax filings have been 
completed for all years up to and including December 31, 2021, and there are no ongoing tax examinations in any 
jurisdiction.  No  interest  or  penalties  were  recognized  in  the  consolidated  statements  of  operations  or  consolidated 
balance sheets. As of December 31, 2022, the Company has no uncertain tax positions.

F-24

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Verona Pharma plc
Notes to Consolidated Financial Statements 

Note 12 - Net loss per share 

Net  loss  per  share  is  calculated  on  an  ordinary  share  basis.  The  Company’s  ADSs  that  are  listed  on  the  Nasdaq 
Global Market each represent eight ordinary shares. The following table shows the computation of basic and diluted 
earnings per share for 2022 and 2021 (net loss in thousands, loss per share in dollars):

Numerator:
Net loss
Net loss available to ordinary shareholders - basic and diluted
Denominator:
Weighted-average shares outstanding - basic and diluted
Net loss per share - basic and diluted

December 31,

2022

2021

$ 
$ 

(68,701)  $ 
(68,701)  $ 

(55,569) 
(55,569) 

 529,071,526 
$ 

(0.13)  $ 

 473,188,457 
(0.12) 

During the years ended December 31, 2022 and 2021, outstanding share options, RSUs and warrants of 53,818,840 
and 63,443,814, respectively, were not included in the computation of diluted earnings per ordinary share, because 
to do so would be antidilutive.

Note 13 - Commitments and contingencies

Management  is  currently  negotiating  a  matter  with  a  supplier  that  has  an  estimated  exposure  of  approximately 
$1.5  million.  Management  does  not  currently  consider  it  probable  that  a  payment  will  be  made  and  therefore  no 
accrual is recorded at December 31, 2022. This matter is expected to be resolved within the next 12 months.

Note 14 - Related party transactions and other shareholder matters

In the years ended December 31, 2022 and 2021 there were no related party transactions.

F-25