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Pulmatrix, Inc.

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FY2023 Annual Report · Pulmatrix, Inc.
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K

(Mark One)

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

For the fiscal year ended December 31, 2023

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: 001-36199

PULMATRIX, INC.
(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction of
incorporation or organization)

36 Crosby Drive, Suite 100
Bedford, MA
(Address of principal executive offices)

46-1821392
(I.R.S. Employer
Identification No.)

01730
(Zip Code)

(781) 357-2333
Registrant’s telephone number, including area code

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

Title of each class
Common Stock, par value $0.0001 per share

Trading Symbol(s)
PULM

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

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

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

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act. Yes ☐ No ☒

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

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

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

Large accelerated filer

Non-accelerated filer

☐  

☒  

Accelerated filer

Smaller reporting company

Emerging growth company

☐

☒

☐

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

Indicate by check mark whether the registrant 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. Yes ☐ No ☒

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the
filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received
by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

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 computed by reference to the price at which the
common equity was last sold, as of June 30, 2023, the last business day of registrant’s most recently completed second fiscal quarter, was $9,787,896.

As of March 25, 2024, the registrant had 3,652,285 shares of common stock, par value $0.0001 per share, issued and outstanding.

None.

DOCUMENTS INCORPORATED BY REFERENCE

 
 
 
 
 
 
 
 
 
 
 
PULMATRIX, INC.

TABLE OF CONTENTS

Page No.

Forward-Looking Statements

PART I

Item 1.

Business.

Item 1A.

Risk Factors.

Item 1B.

Unresolved Staff Comments.

Item 1C.

Cybersecurity.

Item 2.

Properties.

Item 3.

Legal Proceedings.

Item 4.

Mine Safety Disclosures.

PART II

Item 5.

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

Item 6.

Reserved.

Item 7.

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

Item 7A.

Quantitative and Qualitative Disclosures About Market Risk.

Item 8.

Financial Statements and Supplementary Data.

Item 9.

Changes in and Disagreements With Accountants on Accounting and Financial Disclosure.

Item 9A.

Controls and Procedures.

Item 9B.

Other Information.

Item 9C.

Disclosure Regarding Foreign Jurisdictions that Prevent Inspections.

PART III

Item 10.

Directors, Executive Officers and Corporate Governance.

Item 11.

Executive Compensation.

Item 12.

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

Item 13.

Certain Relationships and Related Transactions, and Director Independence.

Item 14.

Principal Accountant Fees and Services.

PART IV

Item 15.

Exhibits, Financial Statement Schedules.

Item 16.

Form 10-K Summary.

Signatures

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Forward-Looking Statements

PART I

This Annual Report on Form 10-K contains forward-looking statements. All statements other than statements of historical fact contained herein, including
statements  regarding  our  business  plans  or  strategies,  projected  or  anticipated  benefits  or  other  consequences  of  our  plans  or  strategies,  projected  or
anticipated benefits from acquisitions to be made by us, or projections involving anticipated revenues, earnings, or other aspects of our operating results,
are  forward-looking  statements.  Words  such  as  “anticipates,”  “assumes,”  “believes,”  “can,”  “could,”  “estimates,”  “expects,”  “forecasts,”  “guides,”
“intends,” “is confident that,” “may,” “plans,” “seeks,” “projects,” “targets,” and “would,” and their opposites and similar expressions, as well as statements
in future tense, are intended to identify forward-looking statements. Forward-looking statements should not be read as a guarantee of future performance or
results  and  may  not  be  accurate  indications  of  when  such  performance  or  results  will  actually  be  achieved.  Forward-looking  statements  are  based  on
information we have when those statements are made or our management’s good faith belief as of that time with respect to future events and are subject to
risks  and  uncertainties  that  could  cause  actual  performance  or  results  to  differ  materially  from  those  expressed  in  or  suggested  by  the  forward-looking
statements. Important factors that could cause such differences include, but are not limited to:

● the impact of the coronavirus (“COVID-19”) pandemic and its continuing effects on the global economy and on the Company’s ongoing and

planned clinical trials;

● our history of recurring losses and negative cash flows from operating activities, significant future commitments and the uncertainty regarding

the adequacy of our liquidity to pursue or complete our business objectives;

● our inability to carry out research, development and commercialization plans;

● our inability to manufacture our product candidates on a commercial scale on our own or in collaborations with third parties;

● our inability to complete preclinical testing and clinical trials as anticipated;

● our collaborators’ inability to successfully carry out their contractual duties;

● termination of certain license agreements;

● our ability to adequately protect and enforce rights to intellectual property, or defend against claims of infringement by others;

● difficulties in obtaining financing on commercially reasonable terms, or at all;

● intense  competition  in  our  industry,  with  competitors  having  substantially  greater  financial,  technological,  research  and  development,

regulatory and clinical, manufacturing, marketing and sales, distribution, personnel and resources than we do;

● entry of new competitors and products and potential technological obsolescence of our products;

● adverse market and economic conditions;

● our ability to maintain compliance with the listing standards of the Nasdaq Capital Market (“Nasdaq”);

● loss of one or more key executives or scientists; and

● difficulties in securing regulatory approval to market our product candidates.

For a more detailed discussion of these and other risks that may affect our business and that could cause our actual results to differ from those projected in
these forward-looking statements, see the risk factors and uncertainties described under the heading “Risk Factors” in Part I, Item 1A of this Annual Report
on Form 10-K. The forward-looking statements contained in this Annual Report on Form 10-K are expressly qualified in their entirety by this cautionary
statement. We do not undertake any obligation to update any forward-looking statement to reflect events or circumstances after the date on which any such
statement is made or to reflect the occurrence of unanticipated events, except as required by law.

Unless  otherwise  stated,  references  in  this  Annual  Report  on  Form  10-K  to  “us,”  “we,”  “our,”  or  “Company”  refer  to  Pulmatrix,  Inc.,  a  Delaware
corporation, and its subsidiary, Pulmatrix Operating Company, Inc., a Delaware corporation.

1

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
“iSPERSE™”  is  one  of  our  trademarks  used  in  this  Annual  Report  on  Form  10-K.  Other  trademarks  appearing  in  this  report  are  the  property  of  their
respective holders. Solely for convenience, these and other trademarks, trade names and service marks referred to in this report appear without the ®, TM
and SM symbols, but those references are not intended to indicate, in any way, we or the owners of such trademarks will not assert, to the fullest extent
under applicable law, their rights to these trademarks and trade names.

ITEM 1.

BUSINESS.

Overview

We  are  a  clinical-stage  biopharmaceutical  company  focused  on  the  development  of  novel  inhaled  therapeutic  products  intended  to  prevent  and  treat
respiratory and other diseases with important unmet medical needs using our patented iSPERSE™ technology. Our proprietary product pipeline includes
treatments for central nervous system (“CNS”) disorders such as acute migraine and serious lung diseases such as Chronic Obstructive Pulmonary Disease
(“COPD”) and allergic bronchopulmonary aspergillosis (“ABPA”). Our product candidates are based on our proprietary engineered dry powder delivery
platform, iSPERSE™,  which  seeks  to  improve  therapeutic  delivery  to  the  lungs  by  optimizing  pharmacokinetics  and  reducing  systemic  side  effects  to
improve patient outcomes.

We design and develop inhaled therapeutic products based on our proprietary dry powder delivery technology, iSPERSE™, which enables delivery of small
or large molecule drugs to the lungs by inhalation for local or systemic applications. The iSPERSE™ powders are engineered to be small, dense particles
with highly efficient dispersibility and delivery to airways. iSPERSE™ powders can be used with an array of dry powder inhaler technologies and can be
formulated  with  a  broad  range  of  drug  substances  including  small  molecules  and  biologics.  We  believe  the  iSPERSE™  dry  powder  technology  offers
enhanced drug loading and delivery efficiency that outperforms traditional lactose-blend inhaled dry powder therapies.

We were incorporated in 2013 as a Delaware corporation.

Business Strategy

Our goal is to develop breakthrough therapeutic products that are safe, convenient, and more effective than the existing therapeutic products for respiratory
and other diseases where iSPERSE™ properties are advantageous.

Our current pipeline is aligned to this goal as we develop iSPERSE™-based therapeutic candidates which target the prevention and treatment of a range of
diseases, including CNS disorders and pulmonary diseases. These therapeutic candidates include PUR3100 for the treatment of acute migraine, PUR1800
for the treatment of acute exacerbations of chronic obstructive pulmonary disease (“AECOPD”), and PUR1900 for the treatment of ABPA in patients with
asthma and in patients with cystic fibrosis (“CF”). Each program is enabled by its unique iSPERSE™ formulation designed to achieve specific therapeutic
objectives.

We  intend  to  capitalize  on  our  iSPERSE™  technology  platform  and  our  expertise  in  inhaled  therapeutics  to  identify  new  product  candidates  for  the
prevention  and  treatment  of  diseases,  including  those  with  considerable  unmet  medical  needs  and  to  build  our  product  pipeline  beyond  our  existing
candidates.  In  order  to  advance  clinical  trials  for  our  therapeutic  candidates  and  leverage  the  iSPERSE™  platform  to  enable  delivery  of  partnered
compounds, we intend to form strategic alliances with third parties, including pharmaceutical and biotechnology companies or academic or private research
institutes.

We expect to continue to incur substantial expenses and operating losses for at least the next several years based on our drug development plans and in
connection with our ongoing activities, as we:

● Pursue  further  clinical  studies  for  PUR3100,  an  orally  inhaled  dihydroergotamine  (“DHE”)  including  a  Phase  2  clinical  study  for  the
treatment of acute migraine. We received Food and Drug Administration (“FDA”) acceptance of our Investigational New Drug Application
(“IND”) and a “study may proceed” letter in September 2023, positioning PUR3100 as Phase 2-ready for potential financing or partnership
discussions.

We developed PUR3100, an iSPERSE™ formulation of DHE in 2020. We completed good laboratory practice (“GLP”) toxicology studies in
2021  and  2022.  In  2022,  we  completed  a  Phase  1  study  designed  as  a  double-blinded  trial  to  assess  the  safety,  tolerability,  and
pharmacokinetics of three dose levels of single doses of inhaled PUR3100 with intravenous (“IV”) placebo, as compared to IV DHE (DHE
mesylate injection) with inhaled placebo.

On January 4, 2023, we announced the Phase 1 topline results, indicating that PUR3100 was safe and tolerated with fewer gastrointestinal
side effects in all doses compared to IV DHE. PUR3100 showed a five-minute Tmax and Cmax within the targeted therapeutic range for all
three doses tested. The Phase 1 study data was presented at the American Headache Society 65th Annual Meeting in June 2023.

2

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
 
 
 
In September 2023, we announced the FDA’s acceptance of an IND application for PUR3100 and receipt of a “study may proceed” letter for a
Phase  2  study.  The  IND  includes  a  Phase  2  clinical  protocol  where  safety  and  preliminary  efficacy  of  PUR3100  will  be  investigated  in
patients with acute migraine.

Based on  the  rapid  systemic  exposure  in  the  therapeutic  range  and  the  improved  side  effect  profile  relative  to  IV  dosing,  we  believe  the
PUR3100  formulation  of  DHE  may  differentiate  from  approved  DHE  products  or  those  in  development.  If  effectiveness  is  demonstrated,
PUR3100 may offer the convenience of being self-administered with a pharmacokinetic profile that may potentially provide rapid onset of
action.

● Pursue partnership or other alternatives to monetize or advance PUR1800, focusing on the development of an orally inhaled kinase inhibitor

for treatment of AECOPD.

  We completed preclinical safety studies for PUR1800, our iSPERSE™ formulation of RV1162, in 2018 and advanced our  formulation  and
process development efforts to support clinical testing in stable moderate-severe COPD patients. We completed a Phase 1b safety, tolerability,
and pharmacokinetics clinical study of PUR1800 for subjects with stable moderate-severe COPD and received topline data from the Phase 1b
clinical  study  in  the  first  quarter  of  2022.  We  analyzed  data  from  the  completed  Phase  1b  clinical  study  of  PUR1800  for  AECOPD  and
presented study results at the American Academy of Allergy, Asthma & Immunology (AAAAI) conference in the first quarter of 2023. The
results indicated PUR1800 was safe and well tolerated with no observed safety signals. The topline data, along with the results from chronic
toxicology  studies,  support  the  continued  development  of  PUR1800  for  the  treatment  of  AECOPD  and  other  inflammatory  respiratory
diseases.

● Terminate the PUR1900 Phase 2b study and seek to monetize PUR1900 in the United States.

On  January  8,  2024,  in  agreement  with  our  partner,  Cipla  Technologies  LLC  (“Cipla”),  pursuant  to  the  Third  Amendment  to  the  Cipla
Agreement (each as defined herein), we announced plans to stop patient enrollment at 8 subjects in the Phase 2b study of PUR1900, effective
immediately. The decision to stop the study was unrelated to any safety concerns. This study had been ongoing since the first quarter of 2023.
We expect to complete all Phase 2b activities by the third quarter of 2024.

After the  study  winddown,  Pulmatrix  will  bear  no  further  financial  responsibility  for  the  commercialization  and  development  activities  as
related  to  PUR1900  outside  the  United  States  and  will  receive  2%  royalties  on  any  potential  future  net  sales  by  Cipla  outside  the  United
States. Within the United States, we and Cipla will seek to monetize PUR1900, our inhaled iSPERSE™ formulation of the antifungal drug
itraconazole for indications where an orally inhaled antifungal may provide a therapeutic benefit or fulfill an unmet medical need.

● Capitalize  on  our  proprietary  iSPERSE™  technology  and  our  expertise  in  inhaled  therapeutics  and  particle  engineering  to  identify  new

product candidates for prevention and treatment of diseases, including those with important unmet medical needs.

To add additional inhaled therapeutics to our development pipeline and facilitate additional collaborations, we are leveraging our iSPERSE™
technology and our management’s expertise in inhaled therapeutics and particle engineering to identify potential product candidates.

● Invest in protecting and expanding our intellectual property portfolio and file for additional patents to strengthen our intellectual property

rights.

The status  of  our  patent  portfolio  changes  frequently  in  the  ordinary  course  of  patent  prosecution.  As  of  December  31,  2023,  our  patent
portfolio related to iSPERSE™ included approximately 143 granted patents, 19 of which are granted US patents, with expiration dates from
2024 to 2037, and approximately 56 additional pending patent applications in the US and other jurisdictions. Our in-licensed portfolio related
to kinase inhibitors included approximately 276 granted patents, 33 of which are granted US patents, with expiration dates from 2029 to 2035,
and approximately 22 additional pending patent applications in the US and other jurisdictions. We have national phase applications pending in
Australia, Brazil, Canada, China, Europe, Israel, India, Japan, Korea, Mexico, New Zealand, Russia, and the United States that cover certain
formulations and methods of use relevant to our PUR3100 program.

● Seek partnerships and license agreements to support the product development and commercialization of our product candidates.

In order to advance our clinical programs, we may seek partners or licensees in areas of pharmaceutical and clinical development.

3

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
iSPERSE™ Technology

We use simple, safe excipients, including proprietary cationic salt formulations, to create a robust and flexible dry powder platform technology that can
accommodate a wide range of drug loads in highly dispersible particles. Our initial delivery platform emerged from development of iCALM™  (inhaled
Cationic Airway Lining Modulators), a non-steroidal anti-inflammatory therapy. The high degree of aerosol efficiency and the density profile of our dry
powder iCALM™ formulations provided the foundation for our development of iSPERSE™ in 2012, which uses other monovalent and divalent salts.

iSPERSE™  particles  are  engineered  with  a  small,  dense  and  dispersible  profile  to  exceed  the  performance  of  traditional  dry  powder  particles  as  the
iSPERSE™  particles  have  the  dispersibility  advantages  of  porous  engineered  particles.  We  believe  this  results  in  superior  drug  delivery  compared  to
traditional oral and injectable forms of treatment for certain diseases. Unlike lactose-blended carrier formulations or low-density particles which disperse
poorly, we believe that the iSPERSE™ technology platform offers several potential benefits, achieved through the following technological innovations:

● Flexible drug loading for delivery of a single microgram to tens of milligrams per dose.

iSPERSE™ particles can be engineered to include concentrations from less than one percent (1%) to greater than eighty percent (80%) active
pharmaceutical ingredients (“APIs”), which allows flexibility for dosing both high potency and high-drug load therapeutics.

● Superior flow rate independent lung delivery without carriers.

The iSPERSE™ technology enables pulmonary delivery independent of lactose or other carriers, which results in significantly greater lung
dose at a matched nominal dose of conventional lactose-based formulations. iSPERSE™ formulations are dispersible across a range of flow
rates with consistent emitted dose and particle size. Performance across flow rates provides reliable dose delivery across patient populations
and reduces patient-to-patient variability.

● Delivery of macromolecules and biologics.

iSPERSE™ powders can be used with an array of dry powder inhaler technologies and can be formulated with a broad range of therapeutic
compounds ranging from small molecules to proteins for both local and systemic drug delivery applications.

● Homogenous combinations of multiple drugs.

iSPERSE™ creates homogenous particles including excipients and API, which allow for the consistent delivery of multiple APIs in a product.
We have successfully formulated iSPERSE™-based products with dual and triple API combinations.

● Strong safety profile.

Current iSPERSE™ products and planned clinical-stage products to be formulated in iSPERSE™ are supported by robust preclinical safety
profiles.  iSPERSE™  excipients  include  those  with  inhalation  precedent  and  those  that  are  generally  regarded  as  safe  by  other  routes  of
administration.

Therapeutic Candidates

PUR3100

In  2020,  we  developed  PUR3100,  the  iSPERSE™  formulation  of  DHE,  for  the  treatment  of  acute  migraine.  Currently  DHE  is  only  available  as
subcutaneous, intravenous infusion or intranasal delivery. If approved for commercialization, PUR3100 has the opportunity to be the first orally inhaled
DHE treatment for acute migraine and be an alternative to other acute therapies. Given the oral inhaled route of delivery, PUR3100 is anticipated to provide
relief from the rapid onset of migraine symptoms and provide a favorable tolerability profile.

4

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Competition and Market Opportunities

The American Migraine Foundation estimates that at least 39 million people in the United States and 1 billion people worldwide live with migraine, but
because many people are not diagnosed or do not receive the treatment they need, the actual number may be higher. Current treatments for migraine include
oral, intranasal, IV or subcutaneous formulations of triptans, DHE, and calcitonin gene-related peptide (“CGRP”) antagonists (gepants). Studies show that
people  with  migraines  are  underdiagnosed,  undertreated,  and  experience  substantial  decreases  in  functioning  and  productivity,  which  translates  into
diminished  quality  of  life  for  individuals,  and  financial  burdens  to  patients,  health-care  systems,  and  employers.  All  current  treatments  are  limited  by
incomplete efficacy and/or intolerability. Therefore, development of additional treatments for acute migraine is warranted.

DHE has been shown to be effective in the treatment of migraine and, in particular, hard to treat migraines, such as menstrual migraine, migraine upon
awakening, and severe migraine. Utilization of DHE has been limited due to its poor oral bioavailability, requiring IV, subcutaneous or intranasal dosing.
IV  dosing  generally  requires  administration  in  a  healthcare  setting  and  may  result  in  nausea  and  vomiting.  Hence,  its  use  has  generally  been  limited  to
patients  with  intractable  or  medication-overuse  migraine.  Intranasal  dosing  with  DHE,  including  Migranal  (Bausch  Health  US  LLC),  approved  in
December 1997, and Trudhesa (Impel NeuroPharma, Inc.), approved by the FDA in September 2021, have been poorly adopted due to incomplete efficacy
and intolerability of nasal inhalation in patients during a migraine.

There is precedent for an orally inhaled DHE therapy. MAP Pharmaceuticals, Inc. developed MAP0004, also known as Levadex or Semprana, a liquid
suspension formulation of DHE, designed to be dosed via a pMDI inhalation device. Their published data indicate a safe and well tolerated formulation
with  rapid  onset  and  long-lasting  efficacy  that  compared  favorably  to  existing  treatments.  Development  of  MAP0004  led  to  a  new  drug  application
(“NDA”) but was halted after multiple complete response letters from the FDA citing Chemistry, Manufacturing and Controls (“CMC”) issues related to
dose  uniformity  and  stability  issues.  Regardless  of  the  failure  of  MAP0004,  the  efficacy  and  tolerability  of  the  formulation  reported  by  MAP
Pharmaceuticals  provides  proof  of  concept  for  an  orally  inhaled  DHE  formulation.  PUR3100,  the  iSPERSE™  formulation  planned  by  Pulmatrix,  is
anticipated to deliver DHE to the lung with efficacy and tolerability that compares favorably with MAP0004, while avoiding the device-related issues of
MAP0004 by delivering PUR3100 as an iSPERSE™ dry powder.

We believe that an iSPERSE formulation of DHE can provide the positive rapid onset and long-lasting efficacy seen in the MAP0004 data by enabling a
similar pharmacokinetic profile while eliminating the manufacturing and device issues which led to the MAP0004 FDA complete response letters.

To the best of our knowledge, there are no other orally inhaled DHE formulations currently in development or on the market. Migranal and Trudhesa are
the  two  currently  FDA  approved  intranasal  formulations  of  DHE.  Satsuma  Pharmaceuticals,  a  subsidiary  of  Shin  Nippon  Biomedical  Laboratories
(“Satsuma”), has developed a dry powder formulation of DHE for intranasal dosing and has completed two Phase 3 clinical studies (ClinicalTrials.gov:
NCT03901482 and NCT04940390). Despite failure of both clinical studies to achieve primary endpoints, Satsuma filed an NDA in the first quarter of 2023
based  on  post-hoc  analysis  showing  benefit  in  secondary  endpoints.  In  January  2024,  the  FDA  declined  to  approve  the  treatment,  citing  manufacturing
concerns. Satsuma plans to work with the FDA to determine possible paths to resubmit the NDA.

Non-Clinical Development

A total of three 14-day GLP toxicology studies have been completed with PUR3100 to support single-dose clinical studies. We are planning to conduct a
chronic toxicology study to support long-term dosing. Based on discussions with the FDA, this would complete the non-clinical requirements to support an
NDA.

Clinical Development

Our  interactions  with  the  FDA  have  indicated  that,  in  addition  to  the  planned  Phase  2  and  Phase  3  studies,  long-term  safety  should  be  assessed  in  a
minimum of one hundred patients for six months of dosing and fifty patients for twelve months of dosing. The FDA also confirmed that it will be necessary
to perform a safety study administering PUR3100 to otherwise healthy patients with asthma before an NDA is submitted.

On September 26, 2022, we announced the completion of patient dosing in a Phase 1 clinical study, performed in Australia. The study design was a double-
dummy,  double-blinded  trial  to  assess  the  safety,  tolerability,  and  pharmacokinetics  of  three  dose  levels  of  single  doses  of  inhaled  PUR3100  with  IV
placebo, as compared to IV DHE (DHE mesylate injection) with inhaled placebo. This study may also provide preliminary comparative bioavailability data
to support the use of the 505(b)(2) pathway for marketing authorization. Twenty-six healthy subjects were enrolled and each of the four groups contained at
least six subjects.

5

 
 
 
 
 
 
 
 
 
 
 
 
 
On  January  4,  2023,  we  announced  topline  results.  PUR3100  was  well-tolerated  and  there  was  a  lower  incidence  of  nausea  in  PUR3100  dose  groups
compared to IV DHE, and we presented the Phase 1 study data at the American Headache Society 65th Annual Meeting in June 2023. In contrast to IV
DHE, no vomiting was observed in any of the PUR3100 dose groups. Oral inhalation of PUR3100 achieved peak exposures in the targeted therapeutic
range at all doses and the Tmax occurred at five minutes after dosing.

Based  on  the  rapid  systemic  exposure  in  the  therapeutic  range  and  the  improved  side  effect  profile  relative  to  IV  dosing,  we  believe  the  PUR3100
formulation of DHE may differentiate from approved DHE products or those in development. If effectiveness is demonstrated, PUR3100 may offer the
convenience of being self-administered with a pharmacokinetic profile that may potentially provide rapid onset of action.

In  September  2023,  we  announced  that  the  FDA  accepted  the  PUR3100  IND  and  the  receipt  of  a  “study  may  proceed”  letter  for  the  clinical  study:  “A
Phase 2, Multicenter, Randomized, Double-Blind, Placebo-Controlled, Single Event Study to Evaluate the Safety, Tolerability, and Efficacy of PUR3100
(Dihydroergotamine  Mesylate  Inhalation  Powder)  in  the  Acute  Treatment  of  Migraine”.  We  anticipate  that  this  Phase  2  clinical  study  will  initiate  once
financing or partnership arrangements have been made.

Clinical study starts may be affected by conditions related to the COVID-19 pandemic and its ongoing effects with respect to clinical study conduct and
patient  enrollment.  For  more  discussion  of  risks  related  to  the  COVID-19  pandemic,  please  see  “Item  1A.  RISK  FACTORS—Risks  Related  to  Our
Business”.

PUR1800

Reduced responsiveness to corticosteroids represents an important barrier to effective treatment of COPD and AECOPD and provides a clear rationale to
seek novel medicines to treat these respiratory diseases. In addition, current treatments generally fail to treat the underlying source of the AECOPD, in
particular when a viral or bacterial infection is the cause, which occurs in approximately 80% of exacerbations. RV1162, the active ingredient of PUR1800,
is a novel, potent anti-inflammatory that inhibits the phosphorylation of a narrow spectrum of kinases. In pre-clinical studies, RV1162 demonstrated direct
anti-inflammatory  activity  in  a  model  of  viral  induced  respiratory  inflammation.  RV1162  also  demonstrated  a  reduction  in  corticosteroid-resistant
inflammatory responses in a model of cigarette smoke induced inflammation. These findings suggested that RV1162 has the potential to deliver effective
anti-inflammatory outcomes in corticosteroid-resistant patients while also reducing the underlying source of inflammation in an exacerbation, such as a
viral and/or bacterial respiratory infection.

Clinical  studies  conducted  by  RespiVert/Janssen  with  RV1162  formulated  as  a  lactose  blend  for  inhalation  demonstrated  that  the  molecule  was  well
tolerated for up to 14 days of dosing in patients with COPD. Analysis of sputum collected from patients with COPD treated with RV1162 showed reduced
levels  of  p38  phosphorylation  in  sputum  cells  and  decreases  in  the  number  of  neutrophils  recovered  in  sputum  after  12  days  of  dosing.  These  findings
suggest that inhalation of RV1162 may confer anti-inflammatory benefits after a short dosing regimen. Long-term toxicology studies with RV1162 as a
lactose blend suggested that this formulation was not suitable for chronic dosing.

Based  upon  the  clinical  results  generated  by  RespiVert/Janssen  for  RV1162  and  the  anticipated  benefits  of  an  iSPERSE™  formulation  of  RV1162,  we
entered into a License, Development and Commercialization Agreement with RespiVert Ltd. (“RespiVert”), a wholly owned subsidiary of Janssen Biotech,
Inc. on June 9, 2017. RespiVert granted us an exclusive, royalty-bearing license in a portfolio of narrow spectrum kinase inhibitor compounds (“NSKI”).
We subsequently formulated RV1162 into PUR1800 for development as a potential therapy for AECOPD.

Competition and Market Opportunities

There  are  18  million  moderate-to-severe  episodes  of  AECOPD  in  the  U.S.  each  year.  AECOPD  are  sudden  onset  increases  in  symptoms,  including
increased  dyspnea,  sputum  purulence  and  volume,  and  wheezing,  coughing,  and  shortness  of  breath  that  require  medical  intervention  and  can  lead  to
hospitalization. The occurrence of an exacerbation greatly increases the likelihood of a further exacerbation within the following 6 months and creates a
significant financial burden to healthcare systems.

Steroids are standard of care for moderate-to-severe acute exacerbations, which occur across all patient severity types. We believe a substantial unmet need
exists  in  AECOPD  for  those  patients  with  underlying  infection  and/or  steroid  resistance.  Acumapimod  (BCT-197)  is  an  oral  p38  MAP  kinase  inhibitor
being  developed  by  Mereo  BioPharma.  BCT-197  completed  Phase  2  development  as  first-line  therapy  for  severe  AECOPD.  In  April  2019,  Mereo
BioPharma announced completion of an end of Phase 2 meeting with the FDA and stated the company is continuing discussions with potential partners for
BCT-197. We are not aware of any further progress in either clinical development or partnership efforts on this product. A generic version of roflumilast, a
phosphodiesterase inhibitor approved by the FDA for use in managing COPD exacerbations, became available in 2022.

6

 
 
 
 
 
 
 
 
 
 
 
 
 
Non-Clinical Development

We conducted two 28-day GLP toxicology studies in rats and dogs. Results from the two GLP toxicology studies supported the potential for PUR1800 to
improve lung exposure, with reduced lung accumulation, as compared to RV1162 as a lactose blend formulation, suggesting potential for chronic dosing.

Toxicology studies in rats and dogs, with durations of six and nine months, respectively, were then completed. The data from both studies demonstrated
that PUR1800 is safe and well tolerated with chronic dosing, with no progression of findings from 28-day studies. We believe this indicates potential for
chronic dosing of PUR1800, within the safety margin identified, enabling us to explore PUR1800 therapy for chronic respiratory diseases such as steroid
resistant  asthma,  COPD,  or  idiopathic  pulmonary  fibrosis.  While  the  program  is  currently  in  development  for  treatment  of  AECOPD,  these  positive
toxicology study results could expand potential indications and value of the program.

Clinical Development

We  completed  a  Phase  1b  safety,  tolerability,  and  pharmacokinetics  of  PUR1800  for  patients  with  stable  moderate-severe  COPD.  Topline  data  was
delivered in the first quarter of 2022 and presented at the American Academy of Allergy, Asthma and Immunology conference in the first quarter of 2023.

The clinical study, performed at the Medicines Evaluation Unit in Manchester, UK, was a randomized, three-way crossover double-blind study with 14
days of daily dosing which includes placebo and one of two doses of PUR1800, and included a 28-day follow-up period after each treatment period. A total
of 18 adults with stable COPD were enrolled. Safety and tolerability, as well as systemic PK were evaluated.

PUR1800  was  well  tolerated  and  there  were  no  observed  safety  signals.  The  PK  data  indicate  that  PUR1800  results  in  low  and  consistent  systemic
exposure  when  administered  via  oral  inhalation.  The  topline  data,  along  with  the  results  from  chronic  toxicology  studies,  support  the  continued
development  of  PUR1800  for  the  treatment  of  AECOPD  and  other  inflammatory  respiratory  diseases.  These  data  will  inform  the  design  of  a  potential
Phase 2 study in the treatment of AECOPD.

PUR1900

PUR1900 is our iSPERSE™ inhaled formulation of itraconazole, an antifungal drug commercially available as an oral drug. We developed PUR1900 for
the prevention and treatment of fungal infections and allergic/hypersensitivity reactions to fungus in patients with severe lung disease, including those with
asthma and CF. On January 28, 2020, PUR1900 received Fast Track designation from the FDA for the treatment of ABPA. Aspergillus colonization and
infections are likely underdiagnosed and occur frequently in patients of all ages. Colonization and infection with Aspergillus can lead to clinical disease
with differing severities and complications depending on the immune status of the host. Invasive aspergillosis is a frequently fatal disease that occurs in
patients that are typically immune suppressed as a result of treatment for hematologic cancers or immunosuppression prior to solid organ transplantation. In
patients with asthma and CF, Aspergillus can cause chronic infections that may be associated with worsening disease and larger declines in lung function
than patients without infection. A subset of patients with asthma and CF with Aspergillus colonization and/or infection develop ABPA, which is a complex
hypersensitivity reaction to fungal antigens. ABPA is a disease resulting in mucus production, wheezing, pulmonary infiltrates, worsening bronchiectasis,
and fibrosis of the lung.

In  patients  with  both  asthma  and  CF,  ABPA  is  commonly  treated  with  oral  steroids  to  treat  inflammation  and  with  oral  antifungals  to  reduce  fungal
infection. The inhalation administration of a drug affords direct delivery of the drug to the infected parts of the lung, maximizing the dose to the affected
sites and minimizing systemic exposure to the rest of the body where it could cause dose-limiting side effects. Therefore, treatment of lung infections by
direct administration of anti-infective products to the lung may improve both the safety and efficacy of treatment compared to systemic administration by
other routes, as well as improving patient convenience as compared to oral and injectable forms of the treatment. We believe that local lung delivery by
inhalation  of  our  iSPERSE™  formulation  could  provide  convenient,  effective  and  safe  management  of  the  debilitating  and  often  life-threatening  lung
infections that are not currently addressed by inhaled therapies.

Competition and Market Opportunities

Current treatments of pulmonary fungal infections highlight the limitations of oral or intravenous anti-infective treatments for lung infections. Itraconazole
is one of the most commonly prescribed therapies for treating Aspergillus infections in patients with asthma and CF. Itraconazole is available commercially
as Sporanox® in both a capsule and oral solution form. Itraconazole is metabolized in the liver by CYP3A4 and coadministration with a large number of
drugs is contraindicated due to the potential for severe drug-drug interactions.

7

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
We  have  demonstrated  that  PUR1900  achieves  higher  local  lung  itraconazole  concentrations  with  lower  systemic  exposure  relative  to  oral  dosing,  thus
allowing for the potential to improve upon both the efficacy and safety profiles observed with oral itraconazole. Furthermore, administration by inhalation
reduces the exposure of the drug in the rest of the body, which may be beneficial in reducing systemic side effects and the risk of potentially toxic drug-
drug interactions.

There  is  precedent  for  both  dry  powder  and  nebulized  inhaled  anti-infective  therapy  to  address  specific  pulmonary  infections  in  patients  which
demonstrates  potential  utility  of  inhaled  drug  delivery  and  market  opportunity.  Mylan  currently  markets  TOBI  Podhaler  for  treatment  of  Pseudomonas
aeruginosa  infection  in  the  United  States  and  Teva  markets  inhaled  colistin,  Colobreathe,  for  the  same  infection  in  Europe.  Insmed  currently  markets
Amikacin Liposome Inhalation Suspension (Arikayce) in the United States for the treatment of lung disease caused by a group of bacteria, Mycobacterium
avium complex in a limited population of patients with the disease who do not respond to conventional treatment (refractory disease). There are currently
no  products  specifically  approved  for  treatment  of  ABPA,  however,  there  are  several  inhaled  antifungal  agents  currently  under  development  for  the
treatment  of  invasive  aspergillosis  or  ABPA.  Treatments  under  development  for  invasive  aspergillosis  include  PC945,  a  novel  azole  antifungal  being
developed by Pulmocide as a liquid for nebulization, and a dry powder formulation of voriconazole being developed by TFF Pharmaceuticals. In principle,
development  of  an  orally  inhaled  antifungal  for  the  treatment  of  invasive  aspergillosis  could  also  be  effective  for  ABPA  but  would  require  additional
clinical  studies  in  the  target  patient  population.  Zambon  has  also  developed  a  dry  powder  formulation  of  voriconazole  for  the  treatment  of  ABPA  and
completed  a  Phase  1  study  in  the  third  quarter  of  2020.  However,  no  additional  development  has  since  been  reported.  Regeneron  Pharmaceuticals  is
currently  running  a  clinical  trial  with  Dupilumab  (NCT04442269)  for  the  treatment  of  ABPA  in  asthma.  This  trial,  which  is  focused  on  prevention  of
exacerbations in individuals with at least one or more severe respiratory exacerbations, completed in February 2024 and is pending results.

New methods to detect Aspergillus infection in sputum have improved the sensitivity of diagnosis and clinical appreciation for these infections. Pulmonary
Aspergillus infections affect approximately 14 million patients worldwide according to the Global Action Fund for Fungal Infections (Improving Outcomes
for Patients with Fungal Infections across the World: A Road Map for the Next Decade). The majority of these cases occur in patients with asthma who
have allergic disease and also include invasive Aspergillus infections that are associated with a high rate of mortality in immunocompromised patients. We
believe  that  PUR1900  compares  favorably  to  the  products  discussed  above  and  has  the  potential  to  generate  substantial  value  based  on  treating  and
preventing pulmonary fungal infections in multiple patient populations.

Clinical Development

We completed a Phase 1/1b clinical study in 2018, wherein PUR1900 appeared to be safe and well tolerated in healthy normal volunteers (Parts 1 and 2)
and in patients with asthma (Part 3). In Part 3 of the Phase 1/1b clinical study, following a single dose of PUR1900, the pharmacokinetics (“PK”) analysis
of sputum samples demonstrated approximately 70-fold higher maximum lung concentration of itraconazole following inhalation of PUR1900 compared to
oral Sporanox® (Janssen Pharmaceuticals) despite inhaling only one-tenth the dose of itraconazole (20 mg) relative to the dose of oral Sporanox® (200
mg). Lung exposure, as measured by sputum induction and analysis, was approximately 50-fold higher and plasma exposure was approximately 85-fold
lower  following  inhalation  of  20  mg  of  PUR1900  compared  to  200  mg  of  oral  Sporanox®.  All  endpoints  from  the  Phase  1/1b  clinical  study  were
successfully met.

Successful  completion  of  the  Phase  1/1b  clinical  study  enabled  us  to  initiate  a  Phase  2  clinical  study  in  2019,  entitled:  “A  Randomized,  Double-Blind,
Multicenter, Placebo-Controlled, Phase 2 Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of Itraconazole Administered as a Dry Powder
for Inhalation (PUR1900) in Adult Asthmatic Patients with ABPA.” This clinical study was terminated in July 2020 due to the impact of the COVID-19
pandemic on patient enrollment and clinical study conduct. The completion of a 6-month inhalation toxicology study in dogs in 2020 enabled the conduct
of a new Phase 2b clinical study.

The new Phase 2b study included a 16-week dosing regimen and exploration of potential regulatory approval endpoints. We dosed the first patient during
the  first  quarter  of  2023.  In  January  2024,  pursuant  to  the  Third  Amendment  (as  defined  herein),  we  announced  plans  to  stop  patient  enrollment  at  8
subjects in this study, effective immediately, and to terminate the study as soon as reasonably possible between the date of the Third Amendment and July
30, 2024.

Our  partner  Cipla  plans  to  continue  clinical  development  outside  the  United  States  and  is  currently  conducting  a  Phase  2  study  in  India.  Should  Cipla
successfully market PUR1900 outside the United States, Pulmatrix will receive 2% royalties on any potential future net sales by Cipla outside the United
States. Within the United States, we and Cipla will seek to monetize PUR1900 for indications where an orally inhaled antifungal may provide a therapeutic
benefit or fulfill an unmet medical need.

Business Development

PUR3100

In September 2023, we announced the FDA’s acceptance of an IND application for PUR3100 and receipt of a “study may proceed” letter for a Phase 2
study. The IND includes a Phase 2 clinical protocol where safety and preliminary efficacy of PUR3100 will be investigated in patients with acute migraine.

8

 
 
 
 
 
 
 
 
 
 
 
 
 
 
PUR1800

We completed a Phase 1b safety, tolerability, and pharmacokinetics clinical study of PUR1800 for subjects with stable moderate-severe COPD and received
topline data from the Phase 1b clinical study in the first quarter of 2022. We analyzed data from the completed Phase 1b clinical study of PUR1800 for
AECOPD and presented study results at the American Academy of Allergy, Asthma & Immunology (AAAAI) conference in the first quarter of 2023. The
results indicated PUR1800 was safe and well tolerated with no observed safety signals. The topline data, along with the results from chronic toxicology
studies, support the continued development of PUR1800 for the treatment of AECOPD and other inflammatory respiratory diseases.

PUR1900

On April 15, 2019, we entered into a Development and Commercialization Agreement (the “Cipla Agreement”) with Cipla for the co-development and
commercialization,  on  a  worldwide,  except  for  the  Cipla  Territory  defined  below,  exclusive  basis,  of  PUR1900,  our  inhaled  iSPERSE™  drug  delivery
system (the “Product”) enabled formulation of the antifungal drug itraconazole, which is only available as an oral drug, for the treatment of all pulmonary
indications,  including  ABPA  in  patients  with  asthma.  We  entered  into  an  amendment  to  the  Cipla  Agreement  on  November  8,  2021  (the  “Second
Amendment”) and a subsequent amendment on January 6, 2024 (the “Third Amendment”). All references to the Cipla Agreement herein refer to the Cipla
Agreement, as amended. The Cipla Agreement will remain in effect in perpetuity, unless otherwise earlier terminated in accordance with its terms.

Pursuant to the Third Amendment, all development and commercialization activities with respect to the Product in all markets other than the United States
(the “Cipla Territory”) will be conducted exclusively by Cipla at Cipla’s sole cost and expense, and Cipla shall be entitled to all profits from the sale of the
Product  in  the  Cipla  Territory,  except  that  if  Cipla  successfully  transfers  manufacturing  of  the  Product  for  the  Cipla  Territory  to  a  manufacturing  site
determined by Cipla, we will become entitled to a royalty equal to 2% of net sales in the Cipla Territory.

We  and  Cipla  are  each  responsible  for  60%  and  40%,  respectively,  of  our  overhead  costs  and  the  time  spent  by  our  employees  and  consultants  on
development of the Product (“Direct Costs”). We will share all other development costs with Cipla that are not Direct Costs, such as the cost of clinical
research organizations, manufacturing costs and other third-party costs, on a 50/50 basis.

Pursuant to the Third Amendment, we and Cipla agreed to stop patient enrollment at 8 subjects in the ongoing Phase 2b clinical study. During the period
commencing on January 6, 2024 and ending July 30, 2024 (the “Wind Down Period”), we will complete all Phase 2b activities, assign or license all patents
to Cipla and their registration with the appropriate authorities in the Cipla Territory, complete a physical and demonstrable technology transfer and secure
all data from the Phase 2b study for inclusion in the safety database for the Cipla Territory. We will share costs with Cipla during the Wind Down Period in
the same proportions discussed above, but subject to a maximum reimbursement amount by Cipla as approved by the joint steering committee.

After  the  conclusion  of  the  Wind  Down  Period,  Pulmatrix  will  bear  no  further  financial  responsibility  for  the  commercialization  and  development  with
respect to the Product in the Cipla Territory, with such commercialization and development expenses of the Product in the Cipla Territory to be borne at
Cipla’s sole cost and expense after January 6, 2024. We will receive 2% royalties on any potential future net sales by Cipla outside the United States.

Intellectual Property

Patents and Patent Applications

We protect our intellectual property by filing and advancing patent applications and maintaining granted patents on our iSPERSE™ platform technology
and in-licensed kinase inhibitors, which includes claims to compositions of matter and methods of use for our PUR3100, PUR1800, PUR1900 and other
programs, as well as manufacturing processes, devices and packaging relevant to our iSPERSE™ platform and product candidates.

The status of our patent portfolio changes frequently in the ordinary course of patent prosecution. As of December 31, 2023, our patent portfolio related to
iSPERSE™ included approximately 143 granted patents, 19 of which are granted US patents, with expiration dates from 2024 to 2037, and approximately
56 additional pending patent applications in the US and other jurisdictions. Our in-licensed portfolio related to kinase inhibitors included approximately
276  granted  patents,  33  of  which  are  granted  US  patents,  with  expiration  dates  from  2029  to  2035,  and  approximately  22  additional  pending  patent
applications  in  the  US  and  other  jurisdictions.  We  have  national  phase  applications  pending  in  Australia,  Brazil,  Canada,  China,  Europe,  Israel,  India,
Japan, Korea, Mexico, New Zealand, Russia, and the United States that cover certain formulations and methods of use relevant to our PUR3100 program.

9

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
There can be no assurance that the patent applications will be granted. The term of individual patents depends upon the legal term of the patents in the
countries in which they are obtained. In most countries in which we file, the patent term is 20 years from the earliest date of filing a non-provisional patent
application. In the United States, the patent term of a patent that covers a FDA-approved drug may also be eligible for patent term extension, which permits
patent  term  restoration  as  compensation  for  the  patent  term  lost  during  the  FDA  regulatory  review  process.  The  length  of  the  patent  term  extension  is
related to the length of time the drug is under regulatory review. Patent term extension cannot extend the remaining term of a patent beyond a total of 14
years  from  the  date  of  product  approval  and  only  one  patent  applicable  to  an  approved  drug  may  be  extended.  In  the  future,  if  and  when  our  products
receive FDA approval, we expect to apply for patent term extensions on patents covering those products. Similar provisions are available in Europe and
other foreign jurisdictions to extend the term of a patent that covers an approved drug. We plan to seek patent term extensions to extend the patent coverage
of any of our products that received regulatory approval in any jurisdiction where these extensions are available. However, there is no guarantee that the
applicable authorities, including the FDA in the United States, will agree with our assessment on whether such extensions should be granted, and if granted,
the length of such extensions.

The patent positions of biotechnology companies like ours are generally uncertain and involve complex legal, scientific and factual questions. In addition,
the  coverage  claimed  in  a  patent  application  can  be  significantly  reduced  before  the  patent  is  issued,  and  its  scope  can  be  reinterpreted  after  issuance.
Consequently,  we  may  not  obtain  or  maintain  adequate  patent  protection  for  any  of  our  product  candidates.  We  cannot  predict  whether  the  patent
applications we are currently pursuing will issue as patents in any particular jurisdiction or whether the claims of any issued patents will provide sufficient
proprietary protection from competitors. Any patents that we hold may be challenged, circumvented or invalidated by third parties.

Trade Secrets

We also rely on trade secret protection of our confidential and proprietary information, including the iSPERSE™ technology. Although we take steps to
protect our proprietary information and trade secrets, including through contractual means with our employees, consultants and others, third parties may
independently  develop  substantially  equivalent  proprietary  information  and  techniques  or  otherwise  gain  access  to  our  trade  secrets  or  disclose  our
technology. Thus, we may not be able to meaningfully protect our trade secrets. It is our policy to require our employees, consultants, outside scientific
collaborators,  sponsored  researchers  and  other  advisors  to  execute  confidentiality  agreements  upon  the  commencement  of  employment  or  consulting
relationships with us. These confidentiality agreements provide that all confidential information concerning our business or financial affairs developed or
made known to the individual during the course of the individual’s relationship with us must be kept confidential and not disclosed to third parties except in
specific  circumstances.  Our  confidentiality  agreements  with  our  employees  also  provide  that  all  inventions  conceived  by  the  employee  in  the  course  of
employment with us or from the employee’s use of our confidential information are our exclusive property.

Manufacturing

We do not currently own or operate manufacturing facilities for the production of clinical or commercial quantities of our product candidates. We have
small-scale  production  capabilities  and  generally  perform  early  process  development  for  our  product  candidates  to  produce  the  quantities  necessary  to
conduct  preclinical  studies  of  our  investigational  product  candidates.  We  do  not  have,  and  do  not  currently  plan  to  acquire  or  develop,  the  facilities  or
capabilities  to  manufacture  bulk  drug  substance  or  drug  product  for  use  in  human  clinical  studies.  We  rely  on  contract  manufacturing  organizations
(“CMOs”) and third-party contractors to manufacture drug substance and drug product required for our clinical studies. We expect to continue to rely on
CMOs to manufacture drug substances and drug products under the appropriate current Good Manufacturing Practices (“cGMP”) conditions to perform
clinical  studies  for  the  foreseeable  future.  We  also  contract  with  CMOs  for  the  labeling,  packaging,  storage  and  distribution  of  investigational  drug
products. These arrangements allow us to maintain a more flexible infrastructure while focusing our expertise on researching and developing our products.

We  expect  to  continue  to  rely  on  contract  manufacturers  to  produce  sufficient  quantities  of  our  product  candidates  in  accordance  with  the  appropriate
cGMPs for the pertinent phase of clinical trials. cGMP compliance includes strict adherence to regulations for quality control, quality assurance, and the
maintenance of records and documentation. The manufacturing facilities that manufacture our approved drug products, if any are approved in the future,
must comply with the FDA’s cGMP regulation requirements and have acquired FDA or other regulatory approval for the manufacturing of our commercial
products.  Our  contract  manufacturers  may  also  be  subject  to  inspections  of  facilities  by  regulatory  authorities  to  ensure  compliance  with  applicable
regulations. Contract manufacturers often encounter difficulties involving production yields, quality control and quality assurance, as well as shortages of
qualified personnel. We have little or no direct control over our manufacturers’ compliance with these regulations and standards. Failure to comply with
applicable  regulatory  requirements  may  result  in  fines  and  civil  penalties,  suspension  of  production,  suspension  or  delay  in  product  approval,  product
seizure or recall, or withdrawal of product approval. These actions could have a material impact on the availability of products.

10

 
 
 
 
 
 
 
 
 
 
Suppliers

We also rely on third-party contract manufacturers to supply the APIs that are used to formulate our therapeutic candidates. We place purchase orders with
different contract manufacturers for the APIs required for PUR3100, PUR1800 and PUR1900. We additionally rely on third-party vendors to supply raw
materials for our APIs and drug products.

Research and Development

For fiscal years ended December 31, 2023 and 2022, we spent approximately $15.5 million and $18.2 million, respectively, on research and development
activities.

Government Regulation

Pharmaceutical companies are subject to extensive regulation by national, state and local agencies, such as the FDA, in the United States and the European
Medicines Agency in Europe. The manufacture, distribution, marketing, and sale of pharmaceutical products are subject to government regulation in the
United States and various foreign countries. Additionally, in the United States, we must follow rules and regulations established by the FDA requiring the
presentation of data indicating that our products are safe and efficacious and are manufactured in accordance with cGMP regulations. If we do not comply
with applicable requirements, we may be fined, the government may refuse to approve our marketing applications or allow us to manufacture or market its
products, and we may be criminally prosecuted. We and our manufacturers and clinical research organizations may also be subject to regulations under
other federal, state and local laws, including, but not limited to, the U.S. Occupational Safety and Health Act, the Resource Conservation and Recovery
Act, the Clean Air Act and import, export and customs regulations as well as the laws and regulations of other countries. Pharmaceutical companies must
ensure their compliance with the Foreign Corrupt Practices Act and federal healthcare fraud and abuse laws, including the False Claims Act, and the U.S.
government has increased its enforcement activity regarding illegal marketing practices domestically and internationally.

These regulatory requirements impact our operations and differ from one country to another, such that securing the applicable regulatory approvals of one
country does not imply the approval of another country. However, securing the approval of a more stringent body, e.g., the FDA, may facilitate receiving
the  approval  by  a  regulatory  authority  in  a  different  country  where  the  regulatory  requirements  are  similar  or  less  stringent.  The  approval  procedures
involve high costs and are manpower intensive and usually extend over many years and require highly skilled and professional resources.

FDA Approval Process

The steps required to be taken before a new drug may be marketed in the United States generally include:

● Completion of preclinical laboratory and animal testing;

● The submission to the FDA of an IND application, which must be evaluated and found acceptable by the FDA before human clinical trials

may commence;

● Performance of  adequate  and  well-controlled  human  clinical  trials  in  accordance  with  FDA’s  IND  regulations  to  establish  the  safety  and

efficacy of the proposed drug for its intended use; and

● Submission and approval of an NDA.

Clinical  studies  are  conducted  under  protocols  detailing,  among  other  things,  the  objectives  of  the  study,  what  types  of  patients  may  enter  the  study,
schedules of tests and procedures, drugs, dosages, and length of study, as well as the parameters to be used in monitoring safety, and the efficacy criteria to
be evaluated. A protocol for each clinical study and any subsequent protocol amendments must be submitted to the FDA as part of the IND application.

In  all  the  countries  that  are  signatories  of  the  Helsinki  Declaration,  the  prerequisite  for  conducting  clinical  trials  on  human  subjects  is  securing  the
preliminary  approval  of  the  competent  authorities  of  that  country  to  conduct  medical  experiments  on  human  subjects  in  compliance  with  the  other
principles established by the Helsinki Declaration.

The  clinical  testing  of  a  product  candidate  (also  commonly  referenced  as  a  “drug  product  candidate”  or  a  “therapeutic  product  candidate”)  generally  is
conducted  in  three  sequential  phases  prior  to  approval,  but  the  phases  may  overlap  or  be  combined.  A  fourth,  or  post  approval,  phase  may  include
additional clinical studies. The phases are generally as follows:

11

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Phase 1. In Phase 1 clinical studies, the product is tested in a small number of patients with the target condition or disease or in healthy volunteers. These
studies  are  designed  to  evaluate  the  safety,  dosage  tolerance,  metabolism  and  pharmacologic  actions  of  the  product  candidate  in  humans,  side  effects
associated with increasing doses, and, in some cases, to gain early evidence on efficacy. The number of participants included in Phase 1 studies is generally
in the range of 20 to 80.

Phase 2. In Phase 2 studies, in addition to safety, the sponsor evaluates the efficacy of the product candidate on targeted indications to determine dosage
tolerance and optimal dosage and to identify possible adverse effects and safety risks. Phase 2 studies typically are larger than Phase 1 but smaller than
Phase 3 studies and may involve several hundred participants.

Phase 3.  Phase  3  studies  typically  involve  an  expanded  patient  population  at  geographically-dispersed  test  sites.  They  are  performed  after  preliminary
evidence suggesting effectiveness of the product candidate has been obtained and are designed to further evaluate clinical efficacy and safety, to establish
the  overall  benefit-risk  relationship  of  the  product  candidate  and  to  provide  an  adequate  basis  for  a  potential  product  approval.  Phase  3  studies  usually
involve several hundred to several thousand participants.

Phase 4. Phase 4 clinical trials are post marketing studies designed to collect additional safety data as well as potentially expand a product indication. Post
marketing commitments are required of, or agreed to by, a sponsor after the FDA has approved a product for marketing. These studies are used to gain
additional information from the treatment of patients in the intended therapeutic indication and to verify a clinical benefit in the case of drugs approved
under accelerated approval regulations. If the FDA approves a product while a company has ongoing clinical trials that were not necessary for approval, a
company may be able to use the data from these clinical trials to meet all or part of any Phase 4 clinical trial requirement. These clinical trials are often
referred  to  as  Phase  4  post-approval  or  post  marketing  commitments.  Failure  to  promptly  conduct  Phase  4  clinical  trials  could  result  in  the  inability  to
deliver the product into interstate commerce, misbranding charges, and civil monetary penalties.

Clinical  trials  must  be  conducted  in  accordance  with  the  FDA’s  good  clinical  practices  (“GCP”),  requirements.  The  FDA  may  order  the  temporary  or
permanent discontinuation of a clinical study at any time or impose other sanctions if it believes that the clinical study is not being conducted in accordance
with  FDA  requirements  or  that  the  participants  are  being  exposed  to  an  unacceptable  health  risk.  An  institutional  review  board  (“IRB”)  generally  must
approve  the  clinical  trial  design  and  patient  informed  consent  at  study  sites  that  the  IRB  oversees  and  also  may  halt  a  study,  either  temporarily  or
permanently, for failure to comply with the IRB’s requirements, or may impose other conditions. Additionally, some clinical studies are overseen by an
independent  group  of  qualified  experts  organized  by  the  clinical  study  sponsor,  known  as  a  data  safety  monitoring  board  or  committee.  This  group
recommends whether or not a trial may move forward at designated check points based on access to certain data from the study. The clinical study sponsor
may also suspend or terminate a clinical trial based on evolving business objectives and/or competitive climate.

As a product candidate moves through the clinical testing phases, manufacturing processes are further defined, refined, controlled and validated. The level
of control and validation required by the FDA would generally increase as clinical studies progress. We and the third-party manufacturers on which we rely
for the manufacture of our product candidates and their respective components (including the API) are subject to requirements that drugs be manufactured,
packaged and labeled in conformity with cGMP. To comply with cGMP requirements, manufacturers must continue to spend time, money and effort to
meet  requirements  relating  to  personnel,  facilities,  equipment,  production  and  process,  labeling  and  packaging,  quality  control,  recordkeeping  and  other
requirements.

Assuming completion of all required testing in accordance with all applicable regulatory requirements, detailed information on the product candidate is
submitted to the FDA in the form of an NDA, requesting approval to market the product for one or more indications, together with payment of a user fee,
unless waived. An NDA includes all relevant data available from pertinent nonclinical and clinical studies, including negative or ambiguous results as well
as  positive  findings,  together  with  detailed  information  on  the  chemistry,  manufacture,  control  and  proposed  labeling,  among  other  things.  To  support
marketing  approval,  the  data  submitted  must  be  sufficient  in  quality  and  quantity  to  establish  the  safety  and  efficacy  of  the  product  candidate  for  its
intended use to the satisfaction of the FDA.

If an NDA submission is accepted for filing, the FDA begins an in-depth review of the NDA. Under the Prescription Drug User Fee Act (the “PDUFA”),
the FDA’s goal is to complete its initial review and respond to the applicant within twelve months of submission, unless the application relates to an unmet
medical need in a serious or life-threatening indication, in which case the goal may be within eight months of NDA submission. However, PDUFA goal
dates are not legal mandates and FDA response often occurs several months beyond the original PDUFA goal date. Further, the review process and the
target response date under PDUFA may be extended if the FDA requests or the NDA sponsor otherwise provides additional information or clarification
regarding information already provided in the NDA. The NDA review process can, accordingly, be very lengthy. During its review of an NDA, the FDA
may refer the application to an advisory committee for review, evaluation and recommendation as to whether the application should be approved. The FDA
is not bound by the recommendation of an advisory committee, but it typically follows such recommendations. Data from clinical studies are not always
conclusive and the FDA and/or any advisory committee it appoints may interpret data differently than the applicant.

12

 
 
 
 
 
 
 
 
 
 
 
After  the  FDA  evaluates  the  NDA  and  inspects  manufacturing  facilities  where  the  drug  product  and/or  its  API  will  be  produced,  it  will  either  approve
commercial  marketing  of  the  drug  product  with  prescribing  information  for  specific  indications  or  issue  a  complete  response  letter  indicating  that  the
application is not ready for approval and stating the conditions that must be met in order to secure approval of the NDA. If the complete response letter
requires additional data and the applicant subsequently submits that data, the FDA nevertheless may ultimately decide that the NDA does not satisfy its
criteria for approval. The FDA could also approve the NDA with a Risk Evaluation and Mitigation Strategies, plan to mitigate risks, which 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, development of adequate controls and
specifications, or a commitment to conduct post-marketing testing. Such post-marketing testing may include Phase 4 clinical studies and surveillance to
further assess and monitor the product’s safety and efficacy after approval. Regulatory approval of products for serious or life-threatening indications may
require that participants in clinical studies be followed for long periods to determine the overall survival benefit of the drug.

If the FDA approves one of our therapeutic candidates, we will be required to comply with a number of post-approval regulatory requirements. We will
also  be  required  to  report,  among  other  things,  certain  adverse  reactions  and  production  problems  to  the  FDA,  provide  updated  safety  and  efficacy
information and comply with requirements concerning advertising and promotional labeling for any of its products. Also, quality control and manufacturing
procedures must continue to conform to cGMP after approval, and the FDA periodically inspects manufacturing facilities to assess compliance with cGMP,
which imposes extensive procedural, substantive and record keeping requirements. If we seek to make certain changes to an approved product, such as
certain manufacturing changes, we will need FDA review and approval before the change can be implemented. For example, if we change the manufacturer
of a product or its API, the FDA may require stability or other data from the new manufacturer, which will take time and is costly to generate, and the delay
associated  with  generating  this  data  may  cause  interruptions  in  its  ability  to  meet  commercial  demand,  if  any.  While  physicians  may  use  products  for
indications that have not been approved by the FDA, we may not label or promote the product for an indication that has not been approved. Securing FDA
approval  for  new  indications  is  similar  to  the  process  for  approval  of  the  original  indication  and  requires,  among  other  things,  submitting  data  from
adequate and well-controlled studies that demonstrate the product’s safety and efficacy in the new indication. Even if such studies are conducted, the FDA
may not approve any change in a timely fashion, or at all.

We  rely,  and  expect  to  continue  to  rely,  on  third  parties  for  the  manufacture  of  clinical  and  future  commercial,  quantities  of  its  therapeutic  candidates.
Future  FDA  and  state  inspections  may  identify  compliance  issues  at  these  third-party  facilities  that  may  disrupt  production  or  distribution  or  require
substantial  resources  to  correct.  In  addition,  discovery  of  previously  unknown  problems  with  a  product  or  the  failure  to  comply  with  applicable
requirements may result in restrictions on a product, manufacturer or holder of an approved NDA, including withdrawal or recall of the product from the
market or other voluntary, FDA-initiated or judicial action that could delay or prohibit further marketing. Newly discovered or developed safety or efficacy
data  may  require  changes  to  a  product’s  approved  labeling,  including  the  addition  of  new  warnings  and  contraindications,  and  also  may  require  the
implementation  of  other  risk  management  measures.  Many  of  the  foregoing  could  limit  the  commercial  value  of  an  approved  product  or  require  us  to
commit substantial additional resources in connection with the approval of a product. Also, new government requirements, including those resulting from
new  legislation,  may  be  established,  or  the  FDA’s  policies  may  change,  which  could  delay  or  prevent  regulatory  approval  of  its  products  under
development.

Section 505(b)(2) New Drug Applications

As an alternate path for FDA approval of new indications or new formulations of previously approved products, a company may file a Section 505(b)(2)
NDA, instead of a “stand-alone” or “full” NDA. Section 505(b)(2), was enacted as part of the Drug Price Competition and Patent Term Restoration Act of
1984, otherwise known as the Hatch-Waxman Amendments. Section 505(b)(2) permits the submission of an NDA where at least some of the information
required for approval comes from studies not conducted by or for the applicant and for which the applicant has not obtained a right of reference. Some
examples of products that may be allowed to follow a 505(b)(2) path to approval are drugs that have a new dosage form, strength, route of administration,
formulation or indication.

The Hatch-Waxman Amendments permit the applicant to rely upon certain published nonclinical or clinical studies conducted for an approved product or
the FDA’s conclusions from prior review of such studies. The FDA may require companies to perform additional studies or measurements to support any
changes from the approved product. The FDA may then approve the new product for all or some of the labeled indications for which the reference product
has  been  approved,  as  well  as  for  any  new  indication  supported  by  the  NDA.  While  references  to  nonclinical  and  clinical  data  not  generated  by  the
applicant or for which the applicant does not have a right of reference are allowed, all development, process, stability, qualification and validation data
related to the manufacturing and quality of the new product must be included in an NDA submitted under Section 505(b)(2).

13

 
 
 
 
 
 
 
 
 
To the extent that the Section 505(b)(2) applicant is relying on the FDA’s conclusions regarding studies conducted for an already approved product, the
applicant is required to certify to the FDA concerning any patents listed for the approved product in the FDA’s Orange Book publication. Specifically, the
applicant must certify that: (i) the required patent information has not been filed; (ii) the listed patent has expired; (iii) the listed patent has not expired but
will expire on a particular date and approval is sought after patent expiration; or (iv) the listed patent is invalid or will not be infringed by the new product.
The Section 505(b)(2) application also will not be approved until any non-patent exclusivity, such as exclusivity for obtaining approval of a new chemical
entity, listed in the Orange Book for the reference product has expired. Thus, the Section 505(b)(2) applicant may invest a significant amount of time and
expense in the development of its products only to be subject to significant delay and patent litigation before its products may be commercialized.

Orphan Drug Designation

The  Orphan  Drug  Act  of  1983  (the  “Orphan  Drug  Act”)  encourages  manufacturers  to  seek  approval  of  products  intended  to  treat  “rare  diseases  and
conditions”  with  a  prevalence  of  fewer  than  200,000  patients  in  the  United  States  or  for  which  there  is  no  reasonable  expectation  of  recovering  the
development costs for the product. For products that receive Orphan Drug designation by the FDA, the Orphan Drug Act provides tax credits for clinical
research, FDA assistance with protocol design, eligibility for FDA grants to fund clinical studies, waiver of the FDA application fee, and a period of seven
years of marketing exclusivity for the product following FDA marketing approval. In limited circumstances, the FDA may approve a competing product if
the product shows clinical superiority over a product with orphan drug designation exclusivity.

Foreign Regulation

In  addition  to  regulations  in  the  United  States,  we  will  be  subject  to  a  variety  of  foreign  regulations  governing  clinical  trials  and  commercial  sales  and
distribution of its products. Whether or not we obtain FDA approval for a product, we must obtain approval by the comparable regulatory authorities of
foreign  countries  before  we  can  commence  clinical  trials  or  marketing  of  the  product  in  those  countries.  The  approval  process  varies  from  country  to
country  and  the  time  may  be  longer  or  shorter  than  that  required  for  FDA  approval.  The  requirements  governing  the  conduct  of  clinical  trials,  product
licensing, pricing and reimbursement vary greatly from country to country.

Under  European  Union  regulatory  systems,  a  company  may  submit  marketing  authorization  applications  either  under  a  centralized  or  decentralized
procedure.  The  centralized  procedure,  which  is  compulsory  for  medicines  produced  by  biotechnology  or  those  medicines  intended  to  treat  acquired
immunodeficiency syndrome, cancer, neurodegenerative disorders or diabetes and optional for those medicines which are highly innovative, provides for
the grant of a single marketing authorization that is valid for all European Union member states. Abridged applications for the authorization of generic
versions  of  drugs  authorized  by  European  Medicines  Agency  can  be  submitted  to  the  European  Medicines  Agency  through  a  centralized  procedure
referencing the innovator’s data and demonstrating bioequivalence to the reference product, among other things. The decentralized procedure provides for
mutual recognition of national approval decisions. Under this procedure, the holder of a national marketing authorization may submit an application to the
remaining  member  states.  Within  90  days  of  receiving  the  applications  and  assessments  report,  each  member  state  must  decide  whether  to  recognize
approval. If a member state does not recognize the marketing authorization, the disputed points are eventually referred to the European Commission, whose
decision is binding on all member states.

Reimbursement

In the United States and other countries, sales of any products for which we receive regulatory approval for commercial sale will depend in part on the
availability  of  reimbursement  from  third-party  payers,  including  government  payers,  managed  care  providers,  private  health  insurers  and  other
organizations. Each third-party payer may have its own policy regarding what products it will cover, the conditions under which it will cover such products,
and  how  much  it  will  pay  for  such  products.  Third-party  payers  are  increasingly  examining  the  medical  necessity  and  cost  effectiveness  of  medical
products and services in addition to safety and efficacy and, accordingly, significant uncertainty exists as to the reimbursement status of newly approved
therapeutics. Third-party reimbursement adequate to enable us to realize an appropriate return on our investment in research and product development may
not be available for our products.

The passage of the Medicare Prescription Drug, Improvement and Modernization Act of 2003 (the “MMA”) sets forth requirements for the distribution and
pricing of prescription drugs for Medicare beneficiaries, which may affect the marketing of our products. The MMA also introduced a new reimbursement
methodology. Moreover, while the MMA applies only to drug benefits for Medicare beneficiaries, private payers often follow Medicare coverage policy
and  payment  limitations  in  setting  their  own  payment  rates.  Any  reduction  in  payment  that  results  from  the  MMA  may  result  in  a  similar  reduction  in
payments from non-governmental payers.

More recently, the Inflation Reduction Act of 2022 requires, among other things, the Secretary of the U.S. Department of Health and Human Services to
negotiate  the  price  of  a  set  number  of  high  Medicare  spend  drugs  starting  in  2026,  requires  rebates  from  manufacturers  who  increase  their  drug  prices
above inflation, and makes several changes to the Medicare Part D benefit that will increase manufacturer liability for drug costs previously borne by the
government and beneficiaries under the program.

14

 
 
 
 
 
 
 
 
 
 
 
 
 
In addition, in some foreign countries, the proposed pricing for a drug must be approved before it may be lawfully marketed. The requirements governing
drug  pricing  vary  widely  from  country  to  country.  For  example,  the  European  Union  provides  options  for  its  member  states  to  restrict  the  range  of
medicinal products for which their national health insurance systems provide reimbursement and to control the prices of medicinal products for human use.
A member state may approve a specific price for the medicinal product, or it may instead adopt a system of direct or indirect controls on the profitability of
the company placing the medicinal product on the market.

We  expect  that  there  will  continue  to  be  a  number  of  federal  and  state  proposals  to  implement  governmental  pricing  controls.  While  we  cannot  predict
whether  such  legislative  or  regulatory  proposals  will  be  adopted,  the  adoption  of  such  proposals  could  have  a  material  adverse  effect  on  our  business,
financial condition and profitability.

Compliance with Environmental Laws

Compliance with applicable environmental requirements during the years ended December 31, 2023 and 2022 has not had a material effect upon our capital
expenditures, earnings or competitive position.

Employees

As  of  December  31,  2023,  we  had  22  full-time  employees,  19  of  whom  were  engaged  in  full-time  research  and  development  activities.  None  of  our
employees are represented by any collective bargaining unit. We believe that we maintain good relations with our employees.

Properties

Our corporate headquarters is located in Bedford, Massachusetts. We currently lease approximately 20,000 square feet of office and lab space in Bedford,
Massachusetts under a lease that was originally executed on January 7, 2022. We moved into our headquarters during the third quarter of 2023. The lease
has an initial noncancellable term of ten years.

We terminated our previous lease, as planned, for our previous headquarters in Lexington, Massachusetts, also during the third quarter of 2023.

We  believe  that  our  facilities  are  adequate  to  meet  our  current  needs,  and  that  suitable  additional  alternative  spaces  will  be  available  in  the  future  on
commercially reasonable terms for our future growth.

Available Information

We are subject to the information and periodic reporting requirements of the Securities Exchange Act of 1934, as amended, and, in accordance therewith,
we file periodic reports, proxy statements and other information with the Securities and Exchange Commission. We make available, free of charge, our
Annual  Report  on  Form  10-K,  Quarterly  Reports  on  Form  10-Q,  Current  Reports  on  Form  8-K  and  amendments  to  these  reports  on  our  website  at
www.pulmatrix.com as soon as reasonably practicable after those reports and other information is electronically filed with, or furnished to, the Securities
and Exchange Commission.

ITEM 1A. RISK FACTORS.

The following risk factors, together with all of the other information included or incorporated in this Annual Report on Form 10-K, should be carefully
considered.  If  any  of  the  following  risks,  either  alone  or  taken  together,  or  other  risks  not  presently  known  to  us  or  that  we  currently  believe  to  not  be
significant, develop into actual events, then our business, financial condition, results of operations or prospects could be materially adversely affected. If
that happens, the market price of our common stock could decline, and stockholders may lose all or part of their investment.

Risk Factor Summary

We are providing the following summary of the risk factors contained in this Annual Report on Form 10-K to enhance the readability and accessibility of
our risk factor disclosures. We encourage you to carefully review the full risk factors contained in this Annual Report on Form 10-K in their entirety for
additional information regarding the material factors that make an investment in our securities speculative or risky. These risks and uncertainties include,
but are not limited to, the following:

● We have a history of net losses and may experience future losses;

● We will need to raise additional capital to meet our business requirements in the future and such capital raising may be costly or difficult to

obtain and could dilute our stockholders’ ownership interests;

● We may  engage  in  strategic  transactions  that  could  impact  our  liquidity,  increase  our  expenses  and  present  significant  distractions  to  our

management;

15

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
● We are a clinical development stage biopharmaceutical company and have never been profitable;

● All  of  our  product  candidates  are  still  under  development,  and  there  can  be  no  assurance  of  successful  commercialization  of  any  of  our

products;

● Drug development is a long, expensive, and inherently uncertain process with a high risk of failure at every stage of development, and results

of earlier studies and trials may not be predictive of future trial results;

● If our collaborators are not successful, we may not effectively develop and market some of our therapeutic candidates;

● We may not be able to attract, retain, or manage highly qualified personnel, which could adversely impact our business;

● We face substantial competition in the development of our product candidates and may not be able to compete successfully, and our product

candidates may be rendered obsolete by rapid technological change;

● If the  third  parties  on  which  we  rely  to  conduct  our  clinical  trials,  to  manufacture  clinical  trial  materials,  and  to  assist  us  with  preclinical
development do not perform as contractually required or expected, we may not be able to obtain regulatory clearance or approval for, or to
commercialize, our products;

● Our failure  to  successfully  acquire,  develop  and  market  additional  drug  candidates  or  approved  drug  products  could  impair  our  ability  to

grow;

● We  may  be  subject  to  claims  that  our  employees,  independent  consultants  or  agencies  have  wrongfully  used  or  inadvertently  disclosed

confidential information of third parties;

● Market and economic conditions may negatively impact our business, financial condition and share price;

● The COVID-19  pandemic  and  its  ongoing  effects  have  caused  interruptions  or  delays  of  our  clinical  studies  and  may  continue  to  have  a

substantial adverse effect on our business;

● Our ability to use our net operating loss carryforwards to offset future taxable income may be subject to certain limitations;

● Our business is subject to cybersecurity risks.

● Our  product  candidates  must  undergo  rigorous  nonclinical  and  clinical  testing,  and  we  must  obtain  regulatory  approvals,  which  could  be

costly and time-consuming and subject us to unanticipated delays or prevent us from marketing any products;

● We cannot be certain that any of our current and future product candidates will receive regulatory approval, and without regulatory approval

we will not be able to market our product candidates;

● We have limited experience in filing and pursuing applications necessary to gain regulatory approvals, which may impede our ability to obtain

timely approvals from the U.S. Food and Drug Administration (“FDA”) or foreign regulatory agencies, if at all;

● We and our third-party manufacturers are, and will be, subject to regulations of the FDA and other foreign regulatory authorities;

● We may be unable to adequately protect or enforce our rights to intellectual property, causing us to lose valuable rights. Loss of patent rights

may lead us to lose market share and anticipated profits;

● Legal proceedings or third-party claims of intellectual property infringement and other challenges may require us to spend substantial time

and money and could prevent us from developing or commercializing our product candidates;

● The price of our common stock is subject to fluctuation and has been, and may, continue to be volatile;

● Financial reporting obligations of being a public company in the United States are expensive and time-consuming, and our management may

be required to devote substantial time to compliance matters;

16

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
● Anti-takeover provisions under Delaware corporate law may make it difficult for our stockholders to replace or remove our board of directors

and could deter or delay third parties from acquiring us, which may be beneficial to our stockholders; and

● Protective provisions in our charter and bylaws could prevent a takeover which could harm our stockholders.

Risks Related to Our Business

We have a history of net losses and may experience future losses.

We have yet to establish any history of profitable operations. We reported a net loss of $14.1 million and $18.8 million for the fiscal years ended December
31, 2023 and 2022, respectively. As of December 31, 2023, we had an accumulated deficit of $287.6 million. We expect to incur additional operating losses
for the foreseeable future. There can be no assurance that we will be able to achieve sufficient revenues throughout the year or be profitable in the future.

We will need to raise additional capital to meet our business requirements in the future and such capital raises may be costly or difficult to obtain and
could dilute our stockholders’ ownership interests.

Our current capital will be sufficient to enable us to continue operations for at least 12 months following the filing date of this Annual Report. In order to
continue our operations and to fully realize all of our business objectives, absent any non-dilutive funding from a strategic partner or some other strategic
transactions,  we  will  need  to  raise  additional  capital,  which  may  not  be  available  on  reasonable  terms,  or  at  all.  For  instance,  we  will  need  to  raise
additional funds to accomplish the following:

● advancing the research and development of our therapeutic candidates;

● investing in protecting and expanding our intellectual property portfolio, including filing for additional patents to strengthen our intellectual

property rights;

● hiring and retaining qualified management and key employees;

● responding to competitive pressures; and

● maintaining compliance with applicable laws.

Any additional capital raised through the sale of equity or equity backed securities will dilute our stockholders’ ownership percentages and could also result
in a decrease in the market value of our equity securities.

The terms of any securities issued by us in future financing transactions may be more favorable to new investors, and may include preferences, superior
voting rights and the issuance of warrants or other derivative securities, which may have a further dilutive effect on the holders of any of our securities then
outstanding.

Furthermore, any additional capital financing that we may need in the future may not be available on terms favorable to us, or at all. If we are unable to
obtain  such  additional  financing  on  a  timely  basis,  we  may  have  to  curtail  our  development  activities  and  growth  plans  and/or  be  forced  to  sell  assets,
perhaps on unfavorable terms, which would have a material adverse effect on our business, financial condition and results of operations, and ultimately
could be forced to discontinue our operations and liquidate, in which event it is unlikely that stockholders would receive any distribution on their shares.
Further, we may not be able to continue operating if we do not generate sufficient revenues from operations needed to stay in business.

In addition, we may incur substantial costs in pursuing future capital financing, including investment banking fees, legal fees, accounting fees, securities
law  compliance  fees,  printing  and  distribution  expenses  and  other  costs.  We  may  also  be  required  to  recognize  non-cash  expenses  in  connection  with
certain securities we issue, such as convertible notes and warrants, which may adversely impact our financial condition and cause further dilution to our
stockholders.

We are a clinical development stage biopharmaceutical company and have never been profitable. We expect to incur additional losses in the future and
may never be profitable.

We are a clinical development stage biopharmaceutical company. We have not commercialized any product candidates or recognized any revenues from
our product sales. All of our product candidates are still in the preclinical or clinical development stage, and none have been approved for marketing or are
currently being marketed or commercialized. Our product candidates will require substantial additional development, clinical studies, regulatory clearances,
and  additional  investments  of  time  and  capital  before  they  can  be  commercialized. We  cannot  be  certain  when  or  if  any  of  our  product  candidates  will
obtain the required regulatory approval.

17

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
We have never been profitable and have incurred net losses each year since our inception. Our losses are principally a result of research and development
and  general  administrative  expenses  in  support  of  our  operations.  We  may  incur  substantial  additional  losses  as  we  continue  to  focus  our  resources  on
prioritizing,  selecting  and  advancing  our  product  candidates.  Our  ability  to  generate  revenue  and  achieve  profitability  depends  mainly  upon  our  ability,
alone or with others, to successfully develop our product candidates, obtain the required regulatory approvals in various territories and commercialize our
product candidates. We may be unable to achieve any or all of these goals with regard to our product candidates. As a result, we may never be profitable or
achieve significant and/or sustained revenues.

All of our product candidates are still under development, and there can be no assurance of successful commercialization of any of our products.

All of our research and development programs are in developmental stages. One or more of our product candidates may fail to meet safety and efficacy
standards in human testing, even if those product candidates are found to be effective in animal studies. To develop and commercialize inhaled therapeutic
treatment  for  allergic  bronchopulmonary  aspergillosis  (“ABPA”),  acute  migraine,  and  other  iSPERSE™-based  product  candidates,  we  must  provide  the
FDA and foreign regulatory authorities with human clinical and non-clinical animal data that demonstrate adequate safety and effectiveness. To generate
these  data,  we  will  have  to  subject  our  product  candidates  to  substantial  additional  research  and  development  efforts,  including  extensive  non-clinical
studies  and  clinical  testing.  Our  approach  to  drug  development  may  not  be  effective  or  may  not  result  in  the  development  of  any  drug.  Currently  our
development  efforts  are  primarily  focused  on  PUR3100,  PUR1800  and  PUR1900.  Even  if  PUR3100,  PUR1800  and  PUR1900  or  our  other  product
candidates  are  successful  when  tested  in  animals,  such  success  would  not  be  a  guarantee  of  the  safety  or  effectiveness  of  such  product  candidates  in
humans. It can take several years for a product to be approved and we may not be successful in bringing any therapeutic candidates to the market. A new
drug may appear promising at an early stage of development or after clinical trials and never reach the market, or it may reach the market and not sell, for a
variety of reasons. For example, the drug may:

● be shown to be ineffective or to cause harmful side effects during preclinical testing or clinical trials;

● fail to receive regulatory approval on a timely basis or at all;

● be difficult to manufacture on a large scale;

● not be economically viable;

● not be prescribed by doctors or accepted by patients;

● fail to receive a sufficient level of reimbursement from government, insurers or other third-party payors; or

● infringe on intellectual property rights of any other party.

If  our  delivery  platform  technologies  or  product  development  efforts  fail  to  generate  product  candidates  that  lead  to  the  successful  development  and
commercialization of products, our business and financial condition will be materially adversely affected.

Drug development is a long, expensive and inherently uncertain process with a high risk of failure at every stage of development, and results of earlier
studies and trials may not be predictive of future trial results.

We  have  a  number  of  proprietary  drug  candidates  in  research  and  development  ranging  from  the  early  research  phase  through  preclinical  testing  and
clinical trials. Preclinical testing and clinical trials are long, expensive and highly uncertain processes. It will take us several years to complete clinical trials
and  we  may  not  have  the  resources  to  complete  the  development  and  commercialization  of  any  of  our  proposed  drug  candidates.  The  start  or  end  of  a
clinical  trial,  such  as  our  Phase  2b  trial  for  PUR1900  and  future  trials,  can  often  be  delayed  or  halted  due  to  changing  regulatory  requirements,
manufacturing challenges, required clinical trial administrative actions, slower than anticipated patient enrollment, changing standards of care, availability
or prevalence of use of a competitor drug or required prior therapy, clinical outcomes, or financial constraints of us and our partners.

Drug  development  is  a  highly  uncertain  scientific  and  medical  endeavor,  and  failure  can  unexpectedly  occur  at  any  stage  of  preclinical  and  clinical
development.  Typically,  there  is  a  high  rate  of  attrition  for  drug  candidates  in  preclinical  and  clinical  trials  due  to  scientific  feasibility,  safety,  efficacy,
changing standards of medical care and other variables. The risk of failure is heightened for our drug candidates that are based on new technologies, such
as the application of our dry powder delivery platform, iSPERSE™, including PUR3100, PUR1800, PUR1900 and other iSPERSE™-based drug candidates
currently in research or preclinical development. The failure of one or more of our iSPERSE™-based drug candidates could have a material adverse effect
on our business, financial condition, and results of operations.

18

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
In addition, the results of preclinical studies and clinical trials of previously published iSPERSE™-based products may not necessarily be indicative of the
results  of  our  future  clinical  trials.  The  design  of  our  clinical  trials  is  based  on  many  assumptions  about  the  expected  effects  of  inhaled  drugs  used
historically in the industry and if those assumptions are incorrect, the trials may not produce statistically significant results. Preliminary results may not be
confirmed upon full analysis of the detailed results of an early clinical trial. Product candidates in later stages of clinical trials may fail to show safety and
efficacy  sufficient  to  support  intended  use  claims  despite  having  progressed  through  initial  clinical  trials.  The  data  collected  from  clinical  trials  of  our
product candidates may not be sufficient to obtain regulatory approval in the United States or elsewhere. Because of the uncertainties associated with drug
development and regulatory approval, we cannot determine if, or when, we may have an approved product for commercialization or whether we will ever
achieve sales of or profits on our product candidates or those we may pursue in the future.

If  our  collaborators  are  not  successful,  or  breach  their  agreements  with  us,  we  may  not  effectively  develop  and  market  some  of  our  therapeutic
candidates.

At this time, we have entered into a co-development agreement regarding one of our therapeutic candidates and, as a result, we no longer have complete
control over the development of this candidate. We may also enter into co-development agreements for our other therapeutic candidates in the future. If our
collaborators do not successfully carry out their contractual duties or meet expected deadlines, or they otherwise breach their contractual obligations to us,
we  may  be  delayed  or  may  not  obtain  regulatory  approval  for,  or  commercialize,  our  product  candidates.  We  are  also  subject  to  the  terms  of  such  co-
development  agreements  that  may  affect  our  ability  to  develop  and  manufacture  our  therapeutic  candidates.  As  a  result  of  such  limitations,  we  may  be
unable to pursue the most efficient or profitable path in developing our therapeutic candidates.

If our relationships with these collaborators terminate, we believe that we would be able to enter into arrangements with alternative third parties. However,
replacing  any  collaborator  could  delay  our  clinical  trials  and  could  jeopardize  our  ability  to  obtain  regulatory  approvals  and  commercialize  our  product
candidates on a timely basis, if at all.

We may not be able to attract, retain, or manage highly qualified personnel, which could adversely impact our business.

Our future success and ability to compete in the biopharmaceutical industry is substantially dependent on our ability to identify, attract, and retain highly
qualified  key  managerial,  scientific,  medical,  and  operations  personnel.  The  market  for  key  employees  in  the  biopharmaceutical,  pharmaceutical  and
biotechnology industries is competitive. The loss of the services of any of our principal members of management or key employees without an adequate
replacement  or  our  inability  to  hire  new  employees  as  needed  could  delay  our  product  development  efforts,  harm  our  ability  to  sell  our  products  or
otherwise negatively impact our business.

The scientific, research and development personnel upon whom we rely to operate our business have expertise in certain aspects of drug development and
clinical development, and it may be difficult to retain or replace these individuals. We conduct our operations at our facilities in Bedford, Massachusetts,
within the greater Boston area, and this region is headquarters to many other biopharmaceutical, biotechnology, pharmaceutical, and medical technology
companies, as well as many academic and research institutions, and, therefore, we face increased competition for technical and managerial personnel in this
region.

In addition, we have scientific, medical and clinical advisors who assist us in designing and formulating our products and with development and clinical
strategies. These advisors are not our employees and may have commitments to, or consulting or advisory contracts with, other entities that may limit their
availability to us, or may have arrangements with other companies to assist in the development of products that may compete with ours.

Despite our efforts to retain valuable employees, members of our management and scientific and development teams may terminate their employment with
us  at  any  time.  Although  we  have  written  employment  offer  letter  agreements  with  our  executive  officers,  our  executive  officers  can  leave  their
employment at any time, for any reason, with 30 days’ notice. A sustained labor shortage or increased turnover rates within our employee base, caused by
the COVID-19 pandemic and its ongoing effects or as a result of general macroeconomic factors, could lead to increased costs, such as increased overtime
to meet demand and increased wage rates to attract and retain employees, and could negatively affect our ability to efficiently operate our manufacturing
and  distribution  facilities  and  overall  business.  If  we  are  unable  to  hire  and  retain  employees  capable  of  performing  at  a  high-level,  or  if  mitigation
measures we may take to respond to a decrease in labor availability, such as overtime and third-party outsourcing, have unintended negative effects, our
business  could  be  adversely  affected.  An  overall  labor  shortage,  lack  of  skilled  labor,  increased  turnover  or  labor  inflation,  caused  by  the  COVID-19
pandemic or as a result of general macroeconomic factors, could have a material adverse impact on our operations, results of operations, liquidity or cash
flows. The loss of the services of any of our executive officers or our other key employees and our inability to find suitable replacements could potentially
harm our business, financial condition and prospects. We do not maintain “key man” insurance policies on the lives of these individuals or the lives of any
of our other employees.

19

 
 
 
 
 
 
 
 
 
 
 
 
We face substantial competition in the development of our product candidates and may not be able to compete successfully, and our product candidates
may be rendered obsolete by rapid technological change.

The pharmaceutical and biotechnology industry is highly competitive, and we face substantial competition from many pharmaceutical, biopharmaceutical
and  biotechnology  companies  that  are  researching  and  marketing  products  designed  to  address  the  indications  for  which  we  are  currently  developing
therapeutic candidates or for which we may develop product candidates in the future.

Many of our existing or potential competitors have, or have access to, substantially greater financial, research and development, production, and sales and
marketing resources than we do and have a greater depth and number of experienced managers. As a result, our competitors may be better equipped than us
to  develop,  manufacture,  market  and  sell  competing  products.  In  addition,  gaining  favorable  reimbursement  is  critical  to  the  success  of  our  product
candidates.  We  are  aware  of  many  established  pharmaceutical  companies  in  the  United  States  and  other  parts  of  the  world  that  have  or  are  developing
technologies  for  inhaled  drug  delivery  for  the  prevention  and  treatment  of  respiratory  diseases,  including  GlaxoSmithKline,  Mereo  BioPharma,  Mylan,
Savara,  Insmed,  Satsuma,  Bristol-Meyers,  TFF  Pharmaceuticals,  Zambon  Pharma  and  Pulmocide,  which  we  consider  our  potential  competitors  in  this
regard. If we are unable to compete successfully with these and other potential future competitors, we may be unable to grow or generate revenue.

The  rapid  rate  of  scientific  discoveries  and  technological  changes  could  result  in  one  or  more  of  our  product  candidates  becoming  obsolete  or
noncompetitive. Our competitors may develop or introduce new products that render our iSPERSE™ delivery technology and other product candidates less
competitive, uneconomical or obsolete. Some of these technologies may have an entirely different approach or means of accomplishing similar therapeutic
effects compared to our drug candidates. Our future success will depend not only on our ability to develop our product candidates but to improve them and
keep pace with emerging industry developments. We cannot assure you that we will be able to do so.

We  also  expect  to  face  increasing  competition  from  universities  and  other  non-profit  research  organizations.  These  institutions  carry  out  substantial
research and development in the areas of respiratory diseases. These institutions are becoming increasingly aware of the commercial value of their findings
and are more active in seeking patent and other proprietary rights as well as licensing revenues.

The  potential  acceptance  of  therapeutics  that  are  alternatives  to  ours  may  limit  market  acceptance  of  our  product  candidates,  even  if  commercialized.
Respiratory  diseases,  including  our  targeted  diseases  and  conditions,  can  also  be  treated  by  other  medication  or  drug  delivery  technologies.  These
treatments may be widely accepted in medical communities and have a longer history of use. The established use of these competitive drugs may limit the
potential for our product candidates to receive widespread acceptance if commercialized.

If the third parties on which we rely to conduct our clinical trials and to assist us with preclinical development do not perform as contractually required
or expected, we may not be able to obtain regulatory clearance or approval for, or to commercialize, our products.

We do not have the ability to independently conduct our preclinical and clinical trials for our products and we must rely on third parties, such as contract
research organizations, medical institutions, clinical investigators and contract laboratories to conduct such trials. If these third parties do not successfully
carry out their contractual duties or regulatory obligations or meet expected deadlines, if these third parties need to be replaced, or if the quality or accuracy
of the data they obtain is compromised due to the failure to adhere to our clinical protocols or regulatory requirements or for other reasons, our preclinical
development activities or clinical trials may be extended, delayed, suspended or terminated, and we may not be able to obtain regulatory approval for, or
successfully  commercialize,  our  products  on  a  timely  basis,  if  at  all,  and  our  business,  operating  results  and  prospects  may  be  adversely  affected.
Furthermore, our third-party clinical trial investigators may be delayed in conducting our clinical trials for reasons outside of our control, such as, but not
limited to, patient enrollment.

We  rely  on  third-party  contract  vendors  to  manufacture  and  supply  us  with  high  quality  active  pharmaceutical  ingredients  and  manufacture  our
therapeutic candidates in the quantities we require on a timely basis.

We currently do not manufacture any active pharmaceutical ingredients (“APIs”). Instead, we rely on third-party vendors for the manufacture and supply of
our APIs that are used to formulate our therapeutic candidates. We also do not currently own or operate manufacturing facilities and therefore rely, and
expect to continue to rely, on third parties to manufacture clinical and commercial quantities of our therapeutic candidates and for quality assurance related
to  regulatory  compliance.  If  these  suppliers  or  manufacturers  are  incapable  or  unwilling  to  meet  our  current  or  future  needs  at  our  standards  or  on
acceptable terms, if at all, we may be unable to locate alternative suppliers or manufacturers on acceptable terms, if at all, or produce necessary materials or
components on our own.

20

 
 
 
 
 
 
 
 
 
 
 
 
 
While there may be several alternative suppliers of API in the market, changing API suppliers or finding and qualifying new API suppliers can be costly
and can take a significant amount of time. Many APIs require significant lead time to manufacture. There can also be challenges in maintaining similar
quality or technical standards from one manufacturing batch to the next. We could experience a delay in conducting clinical trials of or obtaining regulatory
approval for PUR3100, PUR1800, PUR1900 or our other drug candidates and incur additional costs if we changed API suppliers for any reason. Similarly,
replacing  our  manufacturers  could  cause  us  to  incur  added  costs  and  experience  delays  in  identifying,  engaging,  qualifying  and  training  any  such
replacements.

If we are not able to find stable, affordable, high quality, or reliable supplies of the APIs, or if we are unable to maintain our existing or future third-party
manufacturing arrangements, we may not be able to produce enough supply of our therapeutic candidates or commercialize any therapeutic candidates on a
timely and competitive basis, which could adversely affect our business, financial condition or results of operations.

Supply chain and shipping disruptions may result in shipping delays, a significant increase in shipping costs, and could increase product costs and
result in lost sales and reputational damage, which may have a material adverse effect on our business, operating results and financial condition.

Our third-party manufacturers and suppliers have experienced, and may continue to experience, supply chain disruption and shipping disruptions, including
disruptions or delays in loading container cargo in ports of origin or off-loading cargo at ports of destination, as a result of the COVID-19 pandemic and its
ongoing effects, congestion in port terminal facilities, labor supply and shipping container shortages, inadequate equipment and persons to load, dock and
offload container vessels and for other reasons. These disruptions may impact our ability to receive our raw materials and certain components required for
the manufacture of our clinical trial materials or products in the future, to distribute our products in a cost-effective and timely manner and to meet demand,
all of which could have an adverse effect on our financial condition and results of operations. There can be no assurance that further unforeseen events
impacting the supply chain will not have a material adverse effect on us in the future. Additionally, the impacts that supply chain disruptions have on our
third-party  manufacturers  and  suppliers  are  not  within  our  control.  It  is  not  currently  possible  to  predict  how  long  it  will  take  for  these  supply  chain
disruptions to cease or ease. Prolonged supply chain disruption that may impact us or our manufacturers and suppliers could interrupt or delay our clinical
trials, product manufacturing, increase raw material and product lead times, increase raw material and product costs, impact our ability to meet customer
demand and result in lost sales and reputational damage, all of which could have a material adverse effect on our business, financial condition and results of
operations.

We may not be successful in negotiating for an appropriate price in a future sale or assignment of our rights related to our current drug candidates.

We may seek to sell or assign our rights related to our current drug candidates. If completed, any such sale or assignment may be at a substantial discount,
the consideration received may not accurately represent the value of the assets sold or assigned and our stockholders may not be entitled to participate in
the future prospects of such drug candidates.

Our failure to successfully acquire, develop and market additional drug candidates or approved drug products could impair our ability to grow.

As part of our growth strategy, we may evaluate, acquire, license, develop and/or market additional product candidates and technologies, subject to the
availability  of  adequate  financing.  However,  our  internal  research  capabilities  are  limited,  and  we  may  be  dependent  upon  pharmaceutical  and
biotechnology companies, academic scientists and other researchers to sell or license products or technology to us. The success of this strategy depends
partly upon our ability to identify, select and acquire promising pharmaceutical product candidates and products. The process of proposing, negotiating and
implementing  a  license  or  acquisition  of  a  product  candidate  or  approved  product  is  lengthy  and  complex.  Other  companies,  including  some  with
substantially  greater  financial,  marketing  and  sales  resources,  may  compete  with  us  for  the  license  or  acquisition  of  product  candidates  and  approved
products.  We  have  limited  resources  to  identify  and  execute  the  acquisition  or  in-licensing  of  third-party  products,  businesses  and  technologies  and
integrate  them  into  our  current  infrastructure.  Moreover,  we  may  devote  resources  to  potential  acquisitions  or  in-licensing  opportunities  that  are  never
completed, or we may fail to realize the anticipated benefits of such efforts. We may not be able to acquire the rights to additional product candidates on
terms that we find acceptable, or at all.

Any  product  candidate  that  we  acquire  may  require  additional  development  efforts  prior  to  commercial  sale,  including  extensive  clinical  testing  and
approval by the FDA and applicable foreign regulatory authorities. All product candidates are prone to risks of failure typical of pharmaceutical product
development, including the possibility that a product candidate will not be shown to be sufficiently safe and effective for approval by regulatory authorities.
In  addition,  we  cannot  provide  assurance  that  any  products  that  we  develop  or  approved  products  that  we  acquire  will  be  manufactured  profitably  or
achieve  market  acceptance.  We  cannot  guarantee  that  we  will  be  able  to  successfully  conduct  the  preclinical  studies  of  the  identified  potential  product
candidates as anticipated.

21

 
 
 
 
 
 
 
 
 
 
 
 
Our business strategy may include entry into additional collaborative or license agreements. We may not be able to enter into collaborative or license
agreements or may not be able to negotiate commercially acceptable terms for these agreements.

Our current business strategy may include the entry into additional collaborative or license agreements for the development and commercialization of our
product  candidates  and  technologies.  The  negotiation  and  consummation  of  these  types  of  agreements  typically  involve  simultaneous  discussions  with
multiple  potential  collaborators  or  licensees  and  require  significant  time  and  resources.  In  addition,  in  attracting  the  attention  of  pharmaceutical  and
biotechnology company collaborators or licensees, we compete with numerous other third parties with product opportunities as well as the collaborators’ or
licensees’ own internal product opportunities. We may not be able to consummate collaborative or license agreements, or we may not be able to negotiate
commercially acceptable terms for these agreements.

If  we  do  enter  into  such  arrangements,  we  could  be  dependent  upon  the  subsequent  success  of  these  other  parties  in  performing  their  respective
responsibilities and the cooperation of our partners. Our collaborators may not cooperate with us or perform their obligations under our agreements with
them. We cannot control the amount and timing of our collaborators’ resources that will be devoted to researching our product candidates pursuant to our
collaborative agreements with them. Our collaborators may choose to pursue existing or alternative technologies in preference to those being developed in
collaboration  with  us.  If  we  do  not  consummate  collaborative  or  license  agreements,  we  may  use  our  financial  resources  more  rapidly  on  our  product
development efforts, continue to defer certain development activities or forego the exploitation of certain geographic territories, any of which could have a
material  adverse  effect  on  our  business  prospects.  Further,  we  may  not  be  successful  in  overseeing  any  such  collaborative  arrangements.  If  we  fail  to
establish and maintain necessary collaborative or license relationships, our business prospects could suffer.

We  may  be  subject  to  claims  that  our  employees,  independent  consultants  or  agencies  have  wrongfully  used  or  inadvertently  disclosed  confidential
information of third parties.

We  employ  individuals  and  contract  with  independent  consultants  and  agencies  that  may  have  previously  worked  at  or  conducted  business  with  third
parties; and, we may be subject to claims that we or our employees, consultants or agencies have inadvertently or otherwise used or disclosed confidential
information of our employees’ former employers or other third parties. We may also be subject to claims that our employees’ former employers or other
third  parties  have  an  ownership  interest  in  our  patents.  Litigation  may  be  necessary  to  defend  against  these  claims.  There  is  no  guarantee  of  success  in
defending these claims, and if we are successful, litigation could result in substantial cost and be a distraction to our management and other employees.

Market and economic conditions may negatively impact our business, financial condition and share price.

Concerns  over  inflation,  geopolitical  issues,  the  U.S.  financial  markets  and  a  declining  real  estate  market,  unstable  global  credit  markets  and  financial
conditions, and volatile oil prices have led to periods of significant economic instability, diminished liquidity and credit availability, declines in consumer
confidence and discretionary spending, diminished expectations for the global economy and expectations of slower global economic growth going forward,
increased unemployment rates, and increased credit defaults in recent years. Our general business strategy may be adversely affected by any such economic
downturns,  volatile  business  environments  and  continued  unstable  or  unpredictable  economic  and  market  conditions.  If  these  conditions  continue  to
deteriorate or do not improve, it may make any necessary debt or equity financing more difficult to complete, more costly, and more dilutive. In addition,
there is a risk that one or more of our current and future service providers, manufacturers, suppliers, hospitals and other medical facilities, our third-party
payors, and other partners could be negatively affected by difficult economic times, which could adversely affect our ability to attain our operating goals on
schedule and on budget or meet our business and financial objectives.

The COVID-19 pandemic and its ongoing effects have caused interruptions or delays of our clinical studies and may continue to have a substantial
adverse effect on our business.

In May 2023, the World Health Organization determined that COVID-19 no longer fit the definition of a public health emergency and the U.S. government
announced its plan to let the declaration of a public health emergency associated with COVID-19 expire on May 11, 2023. The global health crisis caused
by  the  COVID-19  pandemic  and  its  ongoing  effects  has  and  may  continue  to  negatively  impact  global  economic  activity,  which,  despite  progress  in
vaccination  efforts,  remains  uncertain  and  cannot  be  predicted  with  confidence.  The  ultimate  impact  of  current  and  new  COVID-19  variants  cannot  be
predicted at this time and could depend on numerous factors, including vaccination rates among the population, the effectiveness of COVID-19 vaccines
against new variants and the response by governmental bodies and regulators. Given the ongoing and dynamic nature of the circumstances, it is difficult to
predict the impact of the COVID-19 pandemic and its ongoing effects on our business.

Moreover,  the  COVID-19  pandemic  has  had  and  may  continue  to  have  indeterminable  adverse  effects  on  general  commercial  activity  and  the  world
economy, including market disruption and volatility, and the market price of our common stock. Our business and results of operations have been and may
continue to be adversely affected to the extent that COVID-19 or any other epidemic harms the global economy generally.

22

 
 
 
 
 
 
 
 
 
 
 
 
 
In the past, COVID-19 has delayed enrollment in our clinical trials. For example, in April 2020, we were notified that 11 out of 21 clinical sites suspended
enrollment in the PUR1900 clinical study due to issues associated with the COVID-19 pandemic. In July 2020, we terminated our Phase 2 clinical study for
PUR1900 as a result of the disruptions and safety concerns caused by the COVID-19 pandemic.

To the extent we cannot secure sites to enroll patients, patients remain or become subject again to government “stay at home” mandates, patients feel like
they cannot safely visit trial sites or patients drop out due to COVID-19 related issues, such events could, in the future, delay our current and future clinical
trials and impact enrollment generally for clinical trials, which could have an adverse effect on the operation of and results from our clinical trials and on
our other business operations.

If we fail to maintain proper and effective internal controls, our ability to produce accurate and timely financial statements could be impaired, which
could harm our operating results, our ability to operate our business and investors’ views of us.

Ensuring that we have adequate internal financial and accounting controls and procedures in place so that we can produce accurate financial statements on
a  timely  basis  is  a  costly  and  time-consuming  effort  that  will  need  to  be  evaluated  frequently.  Section  404  of  the  Sarbanes-Oxley  Act  of  2002  (the
“Sarbanes-Oxley  Act”)  requires  public  companies  to  conduct  an  annual  review  and  evaluation  of  their  internal  controls.  Our  failure  to  maintain  the
effectiveness of our internal controls in accordance with the requirements of the Sarbanes-Oxley Act could have a material adverse effect on our business.
We  could  lose  investor  confidence  in  the  accuracy  and  completeness  of  our  financial  reports,  which  could  have  an  adverse  effect  on  the  price  of  our
common stock.

Our ability to use our net operating loss carryforwards to offset future taxable income may be subject to certain limitations

Our ability to use our net operating loss carryforwards to offset future taxable income may be subject to certain limitations. In general, under Section 382 of
the Internal Revenue Code of 1986, as amended (the “Code”) a corporation that undergoes an “ownership change” is subject to annual limitations on its
ability to use its pre-change net operating loss carryforwards or other tax attributes (“NOLs”), to offset future taxable income or reduce taxes. Our past
issuances  of  stock  and  other  changes  in  our  stock  ownership  may  have  resulted  in  ownership  changes  within  the  meaning  of  Section  382  of  the  Code;
accordingly, our pre-change NOLs may be subject to limitation under Section 382. If we determine that we have not undergone an ownership change, the
Internal Revenue Service could challenge our analysis, and our ability to use our NOLs to offset taxable income could be limited by Section 382 of the
Code. Future changes in our stock ownership, some of which are outside of our control, could result in ownership changes under Section 382 of the Code
further limiting our ability to utilize our NOLs. Furthermore, our ability to use NOLs of companies that we may acquire in the future may be subject to
limitations. For these reasons, we may not be able to use a material portion of the NOLs, even if we attain profitability.

Our business is subject to cybersecurity risks.

Our  operations  are  increasingly  dependent  on  information  technologies  and  services.  Threats  to  information  technology  systems  associated  with
cybersecurity risks and cyber incidents or attacks continue to grow, and include, among other things, storms and natural disasters, terrorist attacks, utility
outages,  theft,  viruses,  phishing,  malware,  design  defects,  human  error,  and  complications  encountered  as  existing  systems  are  maintained,  repaired,
replaced, or upgraded. Risks associated with these threats include, among other things:

● theft or misappropriation of funds;
● loss, corruption,  or  misappropriation  of  intellectual  property,  or  other  proprietary,  confidential  or  personally  identifiable  information  (including

supplier, clinical data or employee data);

● disruption or impairment of our and our business operations and safety procedures;
● damage to our reputation with our potential partners, patients and the market;
● exposure to litigation;
● increased costs to prevent, respond to or mitigate cybersecurity events.

Although we utilize various procedures and controls to mitigate our exposure to such risk, cybersecurity attacks and other cyber events are evolving and
unpredictable.  Moreover,  we  have  no  control  over  the  information  technology  systems  of  third  parties  conducting  our  clinical  trials,  our  suppliers,  and
others with which our systems may connect and communicate. As a result, the occurrence of a cyber incident could go unnoticed for a period of time.

We  have  cybersecurity  insurance  coverage  in  the  event  we  become  subject  to  various  cybersecurity  attacks,  however,  we  cannot  ensure  that  it  will  be
sufficient to cover any particular losses we may experience as a result of such cyberattacks. Any cyber incident could have a material adverse effect on our
business, financial condition and results of operations.

23

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Risks Related to Regulatory Matters

Our product candidates must undergo rigorous nonclinical and clinical testing, and we must obtain regulatory approvals, which could be costly and
time-consuming and subject us to unanticipated delays or prevent us from marketing any products. We cannot be certain that any of our current and
future product candidates will receive regulatory approval, and without regulatory approval we will not be able to market our product candidates.

Our  ability  to  generate  revenue  related  to  product  sales,  if  ever,  will  depend  on  the  successful  development  and  regulatory  approval  of  our  product
candidates. We currently have no products approved for sale, and we cannot guarantee that we will ever have marketable products. The development of a
product candidate and issues relating to its approval and marketing are subject to extensive regulation, including regulation for safety, efficacy and quality,
by the FDA in the United States and comparable regulatory authorities in other countries, with regulations differing from country to country. The FDA
regulations and the regulations of comparable foreign regulatory authorities are wide-ranging and govern, among other things:

● product design, development, manufacture and testing;

● product labeling;

● product storage and shipping;

● pre-market clearance or approval;

● advertising and promotion; and

● product sales and distribution.

Clinical testing can be costly and take many years, and the outcome is uncertain and susceptible to varying interpretations. We cannot predict whether our
current or future trials and studies will adequately demonstrate the safety and efficacy of any of our product candidates or whether regulators will agree
with our conclusions regarding the preclinical studies and clinical trials we have conducted to date, including the clinical trials for PUR1900. The clinical
trials of our product candidates may not be completed on schedule, the FDA or foreign regulatory agencies may order us to stop or modify our research, or
these  agencies  may  not  ultimately  approve  any  of  our  product  candidates  for  commercial  sale.  The  data  collected  from  our  clinical  trials  may  not  be
sufficient to support regulatory approval of our various product candidates. Even if we believe the data collected from our clinical trials are sufficient, the
FDA has substantial discretion in the approval process and may disagree with our interpretation of the data.

We are not permitted to market our product candidates in the United States until we receive approval of an NDA from the FDA. Obtaining approval of an
NDA  is  a  lengthy,  expensive  and  uncertain  process,  and  we  may  not  be  successful  in  obtaining  approval. The  FDA  review  processes  can  take  years  to
complete and approval is never guaranteed. We cannot be certain that any of our submissions will be accepted for filing and review by the FDA.

The requirements governing the conduct of clinical trials and manufacturing and marketing of our product candidates outside the United States vary widely
from  country  to  country.  Foreign  approvals  may  take  longer  to  obtain  than  FDA  approvals  and  can  require,  among  other  things,  additional  testing  and
different clinical trial designs. Foreign regulatory approval processes include essentially all of the risks associated with the FDA approval processes. Some
of those agencies also must approve prices of the products. Approval of a product by the FDA does not ensure approval of the same product by the health
authorities  of  other  countries,  or  vice  versa.  In  addition,  changes  in  regulatory  policy  in  the  United  States  or  in  foreign  countries  for  product  approval
during the period of product development and regulatory agency review of each submitted new application may cause delays or rejections.

If we are unable to obtain approval from the FDA or other regulatory agencies for our product candidates, or if, subsequent to approval, we are unable to
successfully market and commercialize our product candidates, we will not be able to generate sufficient revenue to become profitable. Furthermore, the
introduction of government price controls or other price-reducing regulations may affect the prices we obtain on our product candidates, if approved and
commercialized.

We have limited experience in filing and pursuing applications necessary to gain regulatory approvals, which may impede our ability to obtain timely
approvals from the FDA or foreign regulatory agencies, if at all.

As  a  company,  we  have  no  experience  in  late-stage  regulatory  filings,  such  as  preparing  and  submitting  NDAs,  which  may  place  us  at  risk  of  delays,
overspending and human resources inefficiencies. Any delay in obtaining, or inability to obtain, regulatory approval could harm our business.

24

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Any failure by us to comply with existing regulations could harm our reputation and operating results.

We will be subject to extensive regulation by U.S. federal and state and foreign governments in each of the markets where we intend to sell our product
candidates if and after we are approved. If we fail to comply with applicable regulations, including the FDA’s pre-or post-approval cGMP requirements,
then  the  FDA  or  other  foreign  regulatory  authorities  could  sanction  us.  Even  if  a  drug  is  FDA-approved,  regulatory  authorities  may  impose  significant
restrictions on a product’s indicated uses or marketing or impose ongoing requirements for potentially costly post-marketing studies.

If a regulatory agency discovers previously unknown problems with a product, such as adverse events of unanticipated severity or frequency, or problems
with  the  facility  where  the  product  is  manufactured,  or  disagrees  with  the  promotion,  marketing  or  labeling  of  the  product,  the  regulatory  agency  may
impose restrictions on that product or us, including requiring withdrawal of the product from the market. If we fail to comply with applicable regulatory
requirements, a regulatory agency or enforcement authority may:

● issue warning letters;

● impose civil or criminal penalties;

● suspend regulatory approval;

● suspend any of our ongoing clinical trials;

● refuse to approve pending applications or supplements to approved applications submitted by us;

● impose restrictions on our operations, including closing our contract manufacturers’ facilities; or

● seize or detain products or require a product recall.

Any  government  investigation  of  alleged  violations  of  law  could  require  us  to  expend  significant  time  and  resources  in  response  and  could  generate
negative publicity. Any failure to comply with ongoing regulatory requirements may significantly and adversely affect our ability to commercialize and
generate revenue from our product candidates. If regulatory sanctions are applied or if regulatory approval is withdrawn, our value and operating results
will be adversely affected. Additionally, if we are unable to generate revenue from sales of our product candidates, our potential for achieving profitability
will be diminished and the capital necessary to fund our operations will be increased.

Any  action  against  us  for  violation  of  these  laws,  even  if  we  successfully  defend  against  it,  could  cause  us  to  incur  significant  legal  expenses,  divert
management’s attention from the operation of our business and damage our reputation. We expend significant resources on compliance efforts and such
expenses are unpredictable and might adversely affect our results. Changing laws, regulations and standards might also create uncertainty, higher expenses
and increase insurance costs.

We and our third-party manufacturers are, and will be, subject to regulations of the FDA and other foreign regulatory authorities.

We  and  our  contract  manufacturers  are,  and  will  be,  required  to  adhere  to  laws,  regulations  and  guidelines  of  the  FDA  or  other  foreign  regulatory
authorities  setting  forth  current  good  manufacturing  practices.  These  laws,  regulations  and  guidelines  cover  all  aspects  of  the  manufacturing,  testing,
quality control and recordkeeping relating to our therapeutic candidates. We and our third-party manufacturers may not be able to comply with applicable
laws, regulations and guidelines. We and our contract manufacturers are and will be subject to unannounced inspections by the FDA, state regulators and
similar foreign regulatory authorities outside the United States. Our failure, or the failure of our third-party manufacturers, to comply with applicable laws,
regulations and guidelines could result in the imposition of sanctions on us, including fines, injunctions, civil penalties, refusal of regulatory authorities to
grant  marketing  approval  of  our  therapeutic  candidates,  delays,  suspension  or  withdrawal  of  approvals,  license  revocation,  seizures  or  recalls  of  our
therapeutic  candidates,  operating  restrictions  and  criminal  prosecutions,  any  of  which  could  significantly  and  adversely  affect  regulatory  approval  and
supplies of our therapeutic candidates, and materially and adversely affect our business, financial condition and results of operations.

25

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Even if we obtain regulatory approvals, our therapeutic candidates will be subject to ongoing regulatory review. If we fail to comply with continuing
U.S. and applicable foreign laws, regulations and guidelines, we could lose those approvals, and our business would be seriously harmed.

Even if our therapeutic candidates receive regulatory approval, we or our commercialization partners, as applicable, will be subject to ongoing reporting
obligations, including pharmacovigilance, and the therapeutic candidates and the manufacturing operations will be subject to continuing regulatory review,
including inspections by the FDA or other foreign regulatory authorities. The results of this ongoing review may result in the withdrawal of a therapeutic
candidate  from  the  market,  the  interruption  of  the  manufacturing  operations  and/or  the  imposition  of  labeling  and/or  marketing  limitations.  Since  many
more patients are exposed to drugs following their marketing approval, serious but infrequent adverse reactions that were not observed in clinical trials may
be observed during the commercial marketing of the therapeutic candidate. In addition, the manufacturer and the manufacturing facilities that we or our
commercialization  partners  use  to  produce  any  therapeutic  candidate  will  be  subject  to  periodic  review  and  inspection  by  the  FDA  and  other  foreign
regulatory authorities. Later discovery of previously unknown problems with any therapeutic candidate, manufacturer or manufacturing process, or failure
to comply with rules and regulatory requirements, may result in actions, including but not limited to the following:

● restrictions on such therapeutic candidate, manufacturer or manufacturing process;

● warning letters from the FDA or other foreign regulatory authorities;

● withdrawal of the therapeutic candidate from the market;

● suspension or withdrawal of regulatory approvals;

● refusal to approve pending applications or supplements to approved applications submitted by us or our commercial partners;

● voluntary or mandatory recall;

● fines;

● refusal to permit the import or export of our therapeutic candidates;

● product seizure or detentions;

● injunctions or the imposition of civil or criminal penalties; or

● adverse publicity.

If we or our commercialization partners, suppliers, third-party contractors or clinical investigators are slow to adapt, or are unable to adapt, to changes in
existing  regulatory  requirements  or  the  adoption  of  new  regulatory  requirements  or  policies,  we  or  our  commercialization  partners  may  lose  marketing
approval for any of our therapeutic candidates if any of our therapeutic candidates are approved, resulting in decreased or lost revenue from milestones,
product sales or royalties.

Our  employees  may  engage  in  misconduct  or  other  improper  activities,  including  noncompliance  with  regulatory  standards  and  requirements  and
insider trading.

We  are  exposed  to  the  risk  of  employee  fraud  or  other  misconduct.  Misconduct  by  employees  could  include  intentional  failures  to  comply  with  any
regulations applicable to us, to provide accurate information to regulatory authorities, to comply with manufacturing standards we may have established, to
comply with federal and state healthcare fraud and abuse laws and regulations, or to report financial information or data accurately or disclose unauthorized
activities to us. In particular, sales, marketing and business arrangements in the healthcare industry are subject to extensive laws and regulations intended to
prevent fraud, misconduct, kickbacks, self-dealing and other abusive practices. 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. Employee misconduct could also
involve  the  improper  use  of  information  obtained  in  the  course  of  clinical  trials,  which  could  result  in  regulatory  sanctions  and  serious  harm  to  our
reputation. We have adopted a Code of Business Conduct, but it is not always possible to identify and deter employee misconduct, and the precautions we
take to detect and prevent this activity may not be effective in controlling unknown or unmanaged risk.

26

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
If we fail to comply with federal or state “fraud and abuse” laws, the failure to comply with these laws may adversely affect our business, financial
condition and results of operations.

In the United States, we will be subject to various federal and state health care “fraud and abuse” laws, including anti-kickback laws, false claims laws and
other  laws  intended  to  reduce  fraud  and  abuse  the  healthcare  industry,  which  could  affect  us,  particularly  upon  successful  commercialization  of  our
products in the United States. The federal Anti-Kickback Statute makes it illegal for any person, including a prescription drug manufacturer (or a party
acting on our behalf), to knowingly and willfully solicit, receive, offer or pay any remuneration in exchange for or to induce the referral of an individual
for, or the purchase, order or recommendation of, any good or service, including the purchase, order or prescription of a particular drug for which payment
may be made under a federal health care program, such as Medicare or Medicaid. Under federal government regulations, some arrangements, known as
safe harbors, are deemed not to violate the federal Anti-Kickback Statute. However, these laws are broadly written, and it is often difficult to determine
precisely how the law will be applied in specific circumstances. Accordingly, it is possible that our practices may be challenged under the federal Anti-
Kickback Statute. False claims laws prohibit anyone from knowingly and willfully presenting or causing to be presented for payment to third-party payers,
including government payers, claims for reimbursed drugs or services that are false or fraudulent, claims for items or services that were not provided as
claimed,  or  claims  for  medically  unnecessary  items  or  services.  Cases  have  been  brought  under  false  claims  laws  alleging  that  off-label  promotion  of
pharmaceutical  products  or  the  provision  of  kickbacks  has  resulted  in  the  submission  of  false  claims  to  governmental  health  care  programs.  Under  the
Health Insurance Portability and Accountability Act of 1996, we are prohibited from knowingly and willfully executing a scheme to defraud any health
care benefit program, including private payers, or 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 health care benefits, items or services. Violations of fraud and
abuse laws may be punishable by criminal and/or civil sanctions, including fines, penalties and/or exclusion or suspension from federal and state health
care programs such as Medicare and Medicaid and debarment from contracting with the U.S. government. In addition, private individuals have the ability
to bring actions on behalf of the government under the federal False Claims Act as well as under the false claims laws of several states.

Many  states  have  adopted  laws  similar  to  the  federal  Anti-Kickback  Statute,  some  of  which  apply  to  the  referral  of  patients  for,  or  purchase,  order  or
recommendation of, goods or services reimbursed by any source, not just governmental payers. The scope and enforcement of these laws are uncertain and
subject  to  change  in  the  current  environment  of  healthcare  reform.  We  cannot  predict  the  impact  on  our  business,  financial  condition  nor  results  of
operations of any changes in these laws. Any state or federal regulatory review of us, regardless of the outcome, would be costly and time-consuming. Law
enforcement authorities are increasingly focused on enforcing these laws, and if we are challenged under of one of these laws, we could be required to pay
a fine and/or penalty and could be suspended or excluded from participation in federal or state health care programs, and our business, results of operations
and financial condition may be adversely affected.

Risks Related to Our Financial Position and Need for Additional Capital

We will be required to raise additional capital to fund our operations, and we may not be able to continue as a going concern if we are unable to do so.

Pharmaceutical  product  development,  which  includes  research  and  development,  preclinical  and  clinical  studies  and  human  clinical  trials,  is  a  time-
consuming and expensive process that takes years to complete. We anticipate that our expenses will remain at a high level as we terminate our PUR1900
Phase  2b  trial  and  pursue  development  of  PUR3100  and  PUR1800  or  other  iSPERSE™-based  product  candidates,  and/or  pursue  development  of
iSPERSE™-based pharmaceuticals in additional indications. Based upon our current expectations, we believe that our existing capital resources will enable
us to continue planned operations for at least 12 months following the filing date of this Annual Report. We cannot assure you, however, that our plans will
not change or that changed circumstances will not result in the depletion of our capital resources more rapidly than we currently anticipate. We will need to
raise  additional  funds,  whether  through  the  sale  of  equity  or  debt  securities,  the  entry  into  strategic  business  collaborations,  the  establishment  of  other
funding facilities, licensing arrangements, or asset sales or other means, in order to continue our research and development and clinical trial programs for
our iSPERSE™-based  product  candidates  and  to  support  our  other  ongoing  activities.  However,  it  may  be  difficult  for  us  to  raise  additional  funds  on
reasonable terms or at all. Since inception, we have incurred losses each year and have an accumulated deficit of $287.6 million as of December 31, 2023,
which may raise concerns about our solvency and affect our ability to raise additional capital.

The amount of additional funds we need will depend on a number of factors, including:

● rate of progress and costs of our clinical trials and research and development activities, including costs of procuring clinical materials and

operating our manufacturing facilities;

● our success in establishing strategic business collaborations or other sales or licensing of assets, and the timing and amount of any payments

we might receive from any such transactions we are able to establish;

27

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
● actions taken by the FDA and other regulatory authorities affecting our products and competitive products;

● our degree of success in commercializing any of our product candidates;

● the emergence of competing technologies and products and other adverse market developments;

● the costs of preparing, filing, prosecuting, maintaining and enforcing patent claims and other intellectual property rights or defending against

claims of infringement by others;

● the level of our legal expenses; and

● the costs of discontinuing projects and technologies.

We have raised capital in the past primarily through debt and public offerings and private placements of stock. We may in the future pursue the sale of
additional  equity  and/or  debt  securities,  or  the  establishment  of  other  funding  facilities  including  asset-based  borrowings.  There  can  be  no  assurances,
however,  that  we  will  be  able  to  raise  additional  capital  through  such  an  offering  on  acceptable  terms,  or  at  all.  Issuances  of  additional  debt  or  equity
securities could impact the rights of the holders of our common stock and may dilute their ownership percentage. Moreover, the establishment of other
funding facilities may impose restrictions on our operations. These restrictions could include limitations on additional borrowing and specific restrictions
on the use of our assets, as well as prohibitions on our ability to create liens, pay dividends, redeem our stock or make investments.

We also may seek to raise additional capital by pursuing opportunities for the licensing or sale of certain intellectual property and other assets. We cannot
offer assurances, however, that any strategic collaborations, sales of securities or sales or licenses of assets will be available to us on a timely basis or on
acceptable terms, if at all.

In the event that sufficient additional funds are not obtained through strategic collaboration opportunities, sales of securities, funding facilities, licensing
arrangements  and/or  asset  sales  on  a  timely  basis,  we  will  be  required  to  reduce  expenses  through  the  delay,  reduction  or  curtailment  of  our  projects,
including PUR3100, PUR1800 or PUR1900 development activities, or reduction of costs for facilities and administration. Moreover, if we do not obtain
such  additional  funds,  doubt  may  arise  about  our  ability  to  continue  as  a  going  concern  and  increased  risk  of  insolvency  and  loss  of  investment  to  the
holders of our securities. If we are or become insolvent, investors in our stock may lose the entire value of their investment.

Our long-term capital requirements are subject to numerous risks.

Our long-term capital requirements are expected to depend on many potential factors, including, among others:

● the number of product candidates in development;

● the regulatory clarity and path of each of our product candidates;

● the progress, success and cost of our clinical trials and research and development programs, including manufacturing;

● the costs, timing and outcome of regulatory review and obtaining regulatory clarity and approval of our product candidates and addressing

regulatory and other issues that may arise post-approval;

● the costs of enforcing our issued patents and defending intellectual property-related claims;

● the costs of manufacturing, developing sales, marketing and distribution channels;

● our ability  to  successfully  commercialize  our  product  candidates,  including  securing  commercialization  agreements  with  third  parties  and

favorable pricing and market share; and

● our  consumption  of  available  resources  more  rapidly  than  currently  anticipated,  resulting  in  the  need  for  additional  funding  sooner  than

anticipated.

28

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
We may engage in strategic transactions that could impact our liquidity, increase our expenses and present significant distractions to our management.

From time to time, we may consider strategic transactions, such as acquisitions of companies, business combinations, asset purchases and out-licensing or
in-licensing of products, product candidates or technologies. Additional potential transactions that we may consider include a variety of different business
arrangements,  including  spin-offs,  strategic  partnerships,  joint  ventures,  restructurings,  divestitures,  business  combinations  and  investments.  Any  such
transaction may require us to incur non-recurring or other charges, may increase our near- and long-term expenditures and may pose significant integration
challenges  or  disrupt  our  management  or  business,  which  could  adversely  affect  our  business,  financial  condition  and  results  of  operations.  These
transactions may entail numerous operational and financial risks, including:

● exposure to unknown liabilities;

● disruption of our business and diversion of our management’s time and attention in order to develop acquired products, product candidates or

technologies;

● incurrence of substantial debt or dilutive issuances of equity securities to pay for such transactions;

● higher-than-expected transaction and integration costs;

● write-downs of assets or goodwill or impairment charges;

● increased amortization expenses;

● difficulty and cost in combining the operations and personnel of any acquired businesses or product lines with our operations and personnel;

● impairment of relationships with key suppliers or customers of any acquired businesses or product lines due to changes in management and

ownership; and

● inability to retain key employees of any acquired businesses.

Accordingly,  although  there  can  be  no  assurance  that  we  will  undertake  or  successfully  complete  any  transactions  of  the  nature  described  above,  any
transactions that we do complete may be subject to the foregoing or other risks and could have a material adverse effect on our business, financial condition
and results of operations.

Risks Related to Our Intellectual Property

We may be unable to adequately protect or enforce our rights to intellectual property, causing us to lose valuable rights. Loss of patent rights may lead
us to lose market share and anticipated profits.

Our success, competitive position and future revenues depend, in part, on our ability to obtain patent protection for our products, methods, processes and
other  technologies,  to  preserve  our  trade  secrets,  to  prevent  third  parties  from  infringing  on  our  proprietary  rights  and  to  operate  without  infringing  the
proprietary  rights  of  third  parties.  Despite  our  efforts  to  protect  our  proprietary  technologies  and  processes,  it  is  possible  that  competitors  or  other
unauthorized third parties may obtain, copy, use or disclose proprietary technologies and processes.

We try to protect our proprietary position by, among other things, filing U.S., European and other patent applications related to our product candidates,
methods,  processes  and  other  technologies,  to  prevent  third  parties  from  infringing  on  our  proprietary  rights  and  to  operate  without  infringing  the
proprietary rights of third parties.

Because the patent position of pharmaceutical companies involves complex legal and factual questions, we cannot predict the validity and enforceability of
patents with certainty. Our issued patents may not provide us with any competitive advantages or may be held invalid or unenforceable as a result of legal
challenges  by  third  parties  or  could  be  circumvented.  Our  competitors  may  also  independently  develop  inhaled  drug  delivery  technologies  or  products
similar to iSPERSE™ and iSPERSE™-based product candidates or design around or otherwise circumvent patents issued to us. Thus, any patents that we
own may not provide any protection against competitors. Our pending patent applications, those we may file in the future or those we may license from
third parties may not result in patents being issued. Even if these patents are issued, they may not provide us with proprietary protection or competitive
advantages. The degree of future protection to be afforded by our proprietary rights is uncertain because legal means afford only limited protection and may
not adequately protect our rights or permit us to gain or keep our competitive advantage.

29

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Furthermore, the issuance of a patent, while presumed valid and enforceable, is not conclusive as to its validity or its enforceability and it may not provide
us  with  adequate  proprietary  protection  or  competitive  advantages  against  competitors  with  similar  products.  Competitors  may  also  be  able  to  design
around our patents. Other parties may develop and obtain patent protection for more effective technologies, designs or methods. We may not be able to
prevent the unauthorized disclosure or use of our technical knowledge or trade secrets by consultants, vendors, former employees and current employees.

Patent rights are territorial, and accordingly, the patent protection we do have will only extend to those countries in which we have issued patents. Even so,
the laws of certain countries do not protect our intellectual property rights to the same extent as do the laws of the United States and the European Union.
Competitors may successfully challenge our patents, produce similar drugs or products that do not infringe our patents, or produce drugs in countries where
we have not applied for patent protection or that do not respect our patents. Furthermore, it is not possible to know the scope of claims that will be allowed
in published applications and it is also not possible to know which claims of granted patents, if any, will be deemed enforceable in a court of law.

We have not pursued or maintained, and may not pursue or maintain in the future, patent protection for our product candidates in every country or territory
in which we may sell our products, if approved. The laws of some foreign countries do not protect intellectual property rights to the same extent as federal
and state laws in the United States. Consequently, we may not be able to prevent third parties from infringing our patents in all countries outside the United
States, or from selling or importing products that infringe our patents in and into the United States or other jurisdictions.

Indeed, several companies have encountered significant problems in protecting and defending intellectual property rights in foreign jurisdictions. The legal
systems of some countries do not favor the enforcement of patents and other intellectual property rights, which could make it difficult for us to stop the
infringement,  misappropriation  or  other  violation  of  our  intellectual  property  rights  generally.  Proceedings  to  enforce  our  intellectual  property  rights  in
foreign jurisdictions could result in substantial costs and divert our efforts and attention from other aspects of our business, could put our patents at risk of
being invalidated or interpreted narrowly and our patent applications at risk of not issuing and could provoke third parties to assert claims against us. We
may not prevail in any lawsuits that we initiate, and the damages or other remedies awarded, if any, may not be commercially meaningful.

After the completion of prosecution and granting of our patents, third parties may still manufacture and/or market therapeutic candidates in infringement of
our patent protected rights. Such manufacture and/or market of our product candidates in infringement of our patent protected rights is likely to cause us
damage and lead to a reduction in the prices of our product candidates, thereby reducing our anticipated profits.

In addition, due to the extensive time needed to develop, test and obtain regulatory approval for our therapeutic candidates, any patents that protect our
product candidate may expire during early stages of commercialization. This may reduce or eliminate any market advantages that such patents may give us.
Following patent expiration, we may face increased competition through the entry of generic products into the market and a subsequent decline in market
share and profits.

In addition, in some cases we may rely on our licensors to conduct patent prosecution, patent maintenance or patent defense on our behalf. Therefore, our
ability  to  ensure  that  these  patents  are  properly  prosecuted,  maintained,  or  defended  may  be  limited,  which  may  adversely  affect  our  rights  in  our
therapeutic products. Any failure by our licensors or development partners to properly conduct patent prosecution, patent maintenance or patent defense
could harm our ability to obtain approval or to commercialize our products, thereby reducing our anticipated profits.

Furthermore, our ability to enforce our patent rights depends on our ability to detect infringement. It is difficult to detect infringers who do not advertise the
components that are used in their products. Moreover, it may be difficult or impossible to obtain evidence of infringement in a competitor’s or potential
competitor’s  product,  particularly  in  litigation  in  countries  other  than  the  U.S.  that  do  not  provide  an  extensive  discovery  procedure.  Any  litigation  to
enforce  or  defend  our  patent  rights,  if  any,  even  if  we  were  to  prevail,  could  be  costly  and  time-consuming  and  would  divert  the  attention  of  our
management  and  key  personnel  from  our  business  operations.  We  may  not  prevail  in  any  lawsuits  that  we  initiate,  and  the  damages  or  other  remedies
awarded if we were to prevail may not be commercially meaningful.

If we are unable to protect the confidentiality of our trade secrets or know-how, such proprietary information may be used by others to compete against
us.

In  addition  to  filing  patents,  we  generally  try  to  protect  our  trade  secrets,  know-how  and  technology  by  entering  into  confidentiality  or  non-disclosure
agreements with parties that have access to us, such as our development and/or commercialization partners, employees, contractors and consultants. We
also enter into agreements that purport to require the disclosure and assignment to us of the rights to the ideas, developments, discoveries and inventions of
our employees, advisors, research collaborators, contractors and consultants while employed or engaged by us. However, these agreements can be difficult
and costly to enforce or may not provide adequate remedies. Any of these parties may breach the confidentiality agreements and willfully or unintentionally
disclose our confidential information, or our competitors might learn of the information in some other way. The disclosure to, or independent development
by, a competitor of any trade secret, know-how or other technology not protected by a patent could materially adversely affect any competitive advantage
we may have over any such competitor.

30

 
 
 
 
 
 
 
 
 
 
 
 
 
To  the  extent  that  any  of  our  employees,  advisors,  research  collaborators,  contractors  or  consultants  independently  develop,  or  use  independently
developed,  intellectual  property  in  connection  with  any  of  our  products,  disputes  may  arise  as  to  the  proprietary  rights  to  this  type  of  information.  If  a
dispute arises with respect to any proprietary right, enforcement of our rights can be costly and unpredictable, and a court may determine that the right
belongs to a third party.

Legal proceedings or third-party claims of intellectual property infringement and other challenges may require us to spend substantial time and money
and could prevent us from developing or commercializing our product candidates.

Our commercial success also depends upon our ability, and the ability of any third party with which we may partner, to develop, manufacture, market and
sell our product candidates and/or products, if approved, and use our patent-protected technologies without infringing the patents of third parties. There is
considerable patent litigation in the pharmaceutical industry. As the pharmaceutical industry expands and more patents are issued, we face increased risks
that there may be patents issued to third parties that relate to our product candidates and technology of which we are not aware or that we must challenge to
continue our operations as currently contemplated.

We  may  not  have  identified  all  patents,  published  applications  or  published  literature  that  affect  our  business  either  by  blocking  our  ability  to
commercialize our products or product candidates, by preventing the patentability of one or more aspects of our products or product candidates to us or our
licensors, or by covering the same or similar technologies that may affect our ability to market our products and product candidates. For example, we (or
the licensor of a product or product candidate to us) may not have conducted a patent clearance search sufficient to identify potentially obstructing third-
party patent rights. Moreover, patent applications in the United States are maintained in confidence for up to 18 months after their filing. In some cases,
however, patent applications remain confidential in the U.S. Patent and Trademark Office, or the USPTO, for the entire time prior to issuance as a U.S.
patent. Patent applications filed in countries outside of the United States are not typically published until at least 18 months from their first filing date.
Similarly, publication of discoveries in the scientific or patent literature often lags behind actual discoveries. We cannot be certain that we or our licensors
were the first to invent, or the first to file, patent applications covering our products and candidates. We also may not know if our competitors filed patent
applications  for  technology  covered  by  our  pending  applications  or  if  we  were  the  first  to  invent  the  technology  that  is  the  subject  of  our  patent
applications.  Competitors  may  have  filed  patent  applications  or  received  patents  and  may  obtain  additional  patents  and  proprietary  rights  that  block  or
compete with our patents.

The development, manufacture, use, offer for sale, sale or importation of our product candidates may therefore infringe on the claims of third-party patents
or other intellectual property rights. The nature of claims contained in unpublished patent filings around the world is unknown to us, and it is not possible
to know which countries patent holders may choose for the extension of their filings under the Patent Cooperation Treaty or other mechanisms. We may
also be subject to claims based on the actions of employees and consultants with respect to the usage or disclosure of intellectual property learned at other
employers. The cost to us of any intellectual property litigation or other infringement proceeding, even if resolved in our favor, could be substantial. Some
of  our  competitors  may  be  able  to  sustain  the  costs  of  such  litigation  or  proceedings  more  effectively  because  of  their  substantially  greater  financial
resources. Uncertainties resulting from the initiation, continuation or defense of intellectual property litigation or other proceedings could have a material
adverse effect on our ability to compete in the marketplace. Intellectual property litigation and other proceedings may also absorb significant management
time. Consequently, we are unable to guarantee that we will be able to manufacture, use, offer for sale, sell or import our therapeutic candidates in the event
of an infringement action.

In the event of patent infringement claims, or to avoid potential claims, we may choose or be required to seek a license from a third party and would most
likely be required to pay license fees or royalties or both. These licenses may not be available on acceptable terms, or at all. Even if we were able to obtain
a  license,  the  rights  may  be  non-exclusive,  which  could  potentially  limit  our  competitive  advantage.  Ultimately,  we  could  be  prevented  from
commercializing a product candidate or be forced to cease some aspect of our business operations if, as a result of actual or threatened patent infringement
or other claims, we are unable to enter into licenses on acceptable terms. This inability to enter into licenses could harm our business significantly.

We may be subject to other patent-related litigation or proceedings that could be costly to defend and uncertain in their outcome.

In addition to infringement claims against us, we may in the future become a party to other patent litigation or proceedings before regulatory agencies,
including interference, re-examination inter partes review, or post grant review proceedings filed with the U.S. Patent and Trademark Office or opposition
proceedings  in  other  foreign  patent  offices  regarding  intellectual  property  rights  with  respect  to  our  therapeutic  candidates,  as  well  as  other  disputes
regarding  intellectual  property  rights  with  development  and/or  commercialization  partners,  or  others  with  whom  we  have  contractual  or  other  business
relationships. Post-issuance oppositions are not uncommon and we or our development and/or commercialization partners will be required to defend these
opposition  procedures  as  a  matter  of  course.  Opposition  procedures  may  be  costly,  and  there  is  a  risk  that  we  may  not  prevail,  which  could  harm  our
business significantly.

31

 
 
 
 
 
 
 
 
 
 
 
Obtaining and maintaining patent protection depends on compliance with various procedures and other requirements, and our patent protection could
be reduced or eliminated in case of non-compliance with these requirements.

Periodic maintenance fees, renewal fees, annuity fees and various other governmental fees on patents and/or applications will be due to the relevant patent
agencies  in  several  stages  over  the  lifetime  of  the  patents  and  /or  applications.  The  relevant  patent  agencies  require  compliance  with  a  number  of
procedural,  documentary,  fee  payment  and  other  provisions  during  the  patent  application  process.  In  many  cases,  an  inadvertent  lapse  can  be  cured  by
payment  of  a  late  fee  or  by  other  means  in  accordance  with  the  applicable  rules.  However,  there  are  situations  in  which  the  failure  to  comply  with  the
relevant requirements can result in the abandonment or lapse of the patent or patent application, resulting in partial or complete loss of patent rights in the
relevant jurisdiction. In such an event, our competitors might be able to use our technologies and know-how which could have a material adverse effect on
our business, prospects, financial condition and results of operation.

If  we  fail  to  comply  with  our  obligations  under  our  license  agreements,  we  could  lose  the  rights  to  intellectual  property  that  is  important  to  our
business.

Our current license agreements impose on us various development obligations, payment of royalties and fees based on achieving certain milestones as well
as other obligations. If we fail to comply with our obligations under these agreements, the licensor may have the right to terminate the license. In addition,
if the licensor fails to enforce its intellectual property, the licensed rights may not be adequately maintained. The termination of any license agreements or
failure to adequately protect such license agreements could prevent us from commercializing our product candidates or possible future products covered by
the licensed intellectual property. Any of these events could materially adversely affect our business, prospects, financial condition and results of operation.

We may be subject to damages resulting from claims that we or our employees have wrongfully used or disclosed alleged trade secrets of their former
employers.

Our employees may have been previously employed at other companies in the industry, including our competitors or potential competitors. Although we
are not aware of any claims currently pending against us, we may be subject to claims that these employees or we have inadvertently or otherwise used or
disclosed trade secrets or other proprietary information of the former employers of our employees. Litigation may be necessary to defend against these
claims. Even if we are successful in defending against these claims, litigation could result in substantial costs and be a distraction to management. If we fail
in defending such claims, in addition to paying money claims, we may lose valuable intellectual property rights or personnel. A loss of key personnel or
their work product could hamper or prevent our ability to commercialize product(s), which would materially adversely affect our commercial development
efforts.

Risks Related to Our Common Stock

The price of our common stock is subject to fluctuation and has been and may continue to be volatile.

The stock market in general, and Nasdaq in particular, as well as biotechnology companies, have experienced extreme price and volume fluctuations that
have often been unrelated or disproportionate to the operating performance of small companies. The market price of our common stock may fluctuate as a
result of, among other factors:

● the announcement of new products, new developments, services or technological innovations by us or our competitors;

● actual  or  anticipated  quarterly  increases  or  decreases  in  revenue,  gross  margin  or  earnings,  and  changes  in  our  business,  operations  or

prospects;

● announcements relating to strategic relationships, mergers, acquisitions, partnerships, collaborations, joint ventures, capital commitments, or

other events by us or our competitors;

● conditions or trends in the biotechnology and pharmaceutical industries;

● changes in the economic performance or market valuations of other biotechnology and pharmaceutical companies;

● general market  conditions  or  domestic  or  international  macroeconomic  and  geopolitical  factors  unrelated  to  our  performance  or  financial
condition  (including,  for  example,  the  coronavirus  outbreak,  the  conflicts  in  Ukraine  and  Israel,  supply  chain  and  recent  inflationary
pressures);

● purchase or sale of our common stock by stockholders, including executives and directors;

● volatility and limitations in trading volumes of our common stock;

32

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
● our ability to obtain financings to conduct and complete research and development activities including, but not limited to, our human clinical

trials, and other business activities;

● any delays  or  adverse  developments  or  perceived  adverse  developments  with  respect  to  the  FDA’s  review  of  our  planned  preclinical  and

clinical trials;

● ability to secure resources and the necessary personnel to conduct clinical trials on our desired schedule;

● failures to meet external expectations or management guidance;

● changes in our capital structure or dividend policy, future issuances of securities, sales or distributions of large blocks of our common stock by

stockholders;

● our cash position;

● announcements and events surrounding financing efforts, including debt and equity securities;

● our inability to enter into new markets or develop new products;

● reputational issues;

● analyst research reports, recommendations and changes in recommendations, price targets, and withdrawals of coverage;

● departures and additions of key personnel;

● disputes and litigation related to intellectual property rights, proprietary rights, and contractual obligations;

● changes in applicable laws, rules, regulations, or accounting practices and other dynamics; and

● other events or factors, many of which may be out of our control.

In  addition,  if  the  market  for  stocks  in  our  industry  or  industries  related  to  our  industry,  or  the  stock  market  in  general,  experiences  a  loss  of  investor
confidence,  the  trading  price  of  our  common  stock  could  fluctuate  or  decline  for  reasons  unrelated  to  our  business,  financial  condition  and  results  of
operations. If any of the foregoing occurs, it could cause our stock price to fall and may expose us to lawsuits that, even if unsuccessful, could be costly to
defend and a distraction to management.

Moreover, the COVID-19 pandemic and its ongoing effects have resulted in significant financial market volatility and uncertainty since March 2020. A
continuation or worsening of the levels of market disruption and volatility seen in the past as a result of the COVID-19 pandemic and its ongoing effects
could have an adverse effect on our ability to access capital, on our business, results of operations and financial condition, and on the market price of our
common stock.

Financial  reporting  obligations  of  being  a  public  company  in  the  United  States  are  expensive  and  time-consuming,  and  our  management  may  be
required to devote substantial time to compliance matters.

As a publicly traded company, we incur significant additional legal, accounting and other expenses. The obligations of being a public reporting company
require  significant  expenditures,  including  costs  resulting  from  public  company  reporting  obligations  under  the  Securities  Exchange  Act  of  1934,  as
amended (the “Exchange Act”), and the rules and regulations regarding corporate governance practices, including those under the Sarbanes-Oxley Act, the
Dodd-Frank Wall Street Reform and Consumer Protection Act, and the Nasdaq Capital Market. These rules require the establishment and maintenance of
effective disclosure and financial controls and procedures, internal control over financial reporting and corporate governance practices, among many other
complex rules that are often difficult and time consuming to implement, monitor and maintain compliance with. Moreover, despite reforms made possible
by the Jumpstart Our Business Startups Act of 2012, the reporting requirements, rules, and regulations will make some activities more time-consuming and
costly, particularly as we are no longer an “emerging growth company.”

In addition, these rules and regulations make it more difficult and more expensive for us to obtain director and officer liability insurance. Compliance with
such requirements also places demands on management’s time and attention.

33

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
In the foreseeable future, we do not intend to pay cash dividends on shares of our common stock so any investor gains will be limited to the value of our
shares.

We currently anticipate that we will retain future earnings for the development, operation and expansion of our business and do not anticipate declaring or
paying any cash dividends for the foreseeable future. Any gains to stockholders will therefore be limited to the increase, if any, in our share price.

We may be at risk of securities class action litigation.

We  may  be  at  risk  of  securities  class  action  litigation.  This  risk  is  especially  relevant  due  to  our  dependence  on  positive  clinical  trial  outcomes  and
regulatory  approvals.  In  the  past,  biotechnology  and  pharmaceutical  companies  have  experienced  significant  stock  price  volatility,  particularly  when
associated with binary events such as clinical trials and product approvals. If we face such litigation, it could result in substantial costs and a diversion of
management’s attention and resources, which could harm our business and result in a decline in the market price of our common stock.

In the event that we fail to satisfy any of the listing requirements of Nasdaq, our common stock may be delisted, which could affect our market price
and liquidity.

Our common stock is listed on Nasdaq. For continued listing on Nasdaq, we will be required to comply with the continued listing requirements, including
the  minimum  market  capitalization  standard,  the  minimum  stockholders’  equity  requirement,  the  corporate  governance  requirements  and  the  minimum
closing bid price requirement, among other requirements. In the event that we fail to satisfy any of the listing requirements of Nasdaq, our common stock
may be delisted. If our securities are delisted from trading on the Nasdaq Stock Market, and we are not able to list our securities on another exchange or to
have  them  quoted  on  the  Nasdaq  Stock  Market,  our  securities  could  be  quoted  on  the  OTC  Markets.  As  a  result,  we  could  face  significant  adverse
consequences including:

● a limited availability of market quotations for our securities;

● a determination  that  our  common  stock  is  a  “penny  stock,”  which  would  require  brokers  trading  in  our  common  stock  to  adhere  to more

stringent rules and possibly result in a reduced level of trading activity in the secondary trading market for our securities;

● a limited amount of news and analyst coverage; and

● a decreased ability to issue additional securities (including pursuant to short-form registration statements on Form S-3 or obtain additional

financing in the future).

We are likely to issue additional equity securities in the future, which are likely to result in dilution to existing investors.

We  may  seek  the  additional  capital  necessary  to  fund  our  operations  through  public  or  private  equity  offerings,  debt  financings,  and  collaborative  and
licensing arrangements. To the extent we raise additional capital by issuing equity securities, including in a debt financing where we issue convertible notes
or notes with warrants and any shares of our common stock to be issued in a private placement, our stockholders may experience substantial dilution. We
may, from time to time, sell additional equity securities in one or more transactions at prices and in a manner we determine. If we sell additional equity
securities, existing stockholders may be materially diluted. In addition, new investors could gain rights superior to existing stockholders, such as liquidation
and other preferences. In addition, the exercise or conversion of outstanding options or warrants to purchase shares of capital stock may result in dilution to
our stockholders upon any such exercise or conversion.

In  addition,  as  of  March  25,  2024,  470,800  shares  remained  available  to  be  awarded  under  our  Amended  and  Restated  2013  Employee,  Director  and
Consultant Equity Incentive Plan (the “Incentive Plan”). Further, an aggregate of 344,306 shares of our common stock could be delivered upon the exercise
or conversion of outstanding stock options or restricted stock units under the Incentive Plan and other equity incentive plans we previously assumed. We
may  also  issue  additional  options,  warrants  and  other  types  of  equity  in  the  future  as  part  of  stock-based  compensation,  capital  raising  transactions,
technology  licenses,  financings,  strategic  licenses  or  other  strategic  transactions.  To  the  extent  these  options  are  exercised,  existing  stockholders  would
experience  additional  ownership  dilution.  In  addition,  the  number  of  shares  available  for  future  grant  under  our  equity  compensation  plans  may  be
increased  in  the  future,  as  our  equity  compensation  plan  contains  an  “evergreen”  provision,  pursuant  to  which  additional  shares  may  be  authorized  for
issuance under the plan each year.

34

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Anti-takeover  provisions  under  Delaware  corporate  law  may  make  it  difficult  for  our  stockholders  to  replace  or  remove  our  board  of  directors  and
could deter or delay third parties from acquiring us, which may be beneficial to our stockholders.

We are subject to the anti-takeover provisions of Delaware law, including Section 203 of the General Corporation Law of Delaware (the “DGCL”). Under
these  provisions,  if  anyone  becomes  an  “interested  stockholder,”  we  may  not  enter  into  a  “business  combination”  with  that  person  for  three  (3)  years
without special approval, which could discourage a third party from making a takeover offer and could delay or prevent a change of control. For purposes
of Section 203 of the DGCL, “interested stockholder” means, generally, someone owning fifteen percent (15%) or more of our outstanding voting stock or
an  affiliate  that  owned  fifteen  percent  (15%)  or  more  of  our  outstanding  voting  stock  during  the  past  three  (3)  years,  subject  to  certain  exceptions  as
described in Section 203 of the DGCL.

Protective provisions in our charter and bylaws could prevent a takeover which could harm our stockholders.

Our certificate of incorporation and bylaws contain a number of provisions that could impede a takeover or prevent us from being acquired, including, but
not limited to, a classified board of directors and limitations on the ability of our stockholders to remove a director from office without cause. Each of these
charter  and  bylaw  provisions  give  our  board  of  directors  the  ability  to  render  more  difficult  or  costly  the  completion  of  a  takeover  transaction  that  our
stockholders might view as being in their best interests.

ITEM 1B. UNRESOLVED STAFF COMMENTS.

None.

ITEM 1C. CYBERSECURITY.

We operate in the biopharmaceutical industry, which is subject to various cybersecurity risks that could adversely affect our business, financial condition,
and  results  of  operations,  including  intellectual  property  theft,  fraud,  extortion,  harm  to  employees  or  customers,  violation  of  privacy  laws  and  other
litigation  and  legal  risk,  and  reputational  risk.  We  recognize  the  critical  importance  of  developing,  implementing,  and  maintaining  robust  cybersecurity
measures to safeguard our information systems and protect the confidentiality, integrity, and availability of our data. We currently have security measures in
place to protect information and prevent data loss and other security breaches, including a cybersecurity risk assessment program. Both management and
the board of directors are actively involved in the continuous assessment of risks from cybersecurity threats, including prevention, mitigation, detection,
and remediation of cybersecurity incidents.

We  have  established  policies  and  processes  for  assessing,  identifying,  and  managing  material  risk  from  cybersecurity  threats,  and  have  integrated  these
processes into our overall risk management systems and processes. We routinely assess material risks from cybersecurity threats, including any potential
unauthorized occurrence on or conducted through our information systems that may result in adverse effects on the confidentiality, integrity, or availability
of our information systems or any information residing therein.

Our current cybersecurity risk assessment program includes identification of reasonably foreseeable internal and external risks, the likelihood and potential
damage that could result from such risks, and the sufficiency of existing policies, procedures, systems, and safeguards in place to manage such risks. The
program outlines governance, policies and procedures, and technology we use to oversee and identify risks from cybersecurity threats and is informed by
previous cybersecurity incidents we have observed in our industry.

Following  these  risk  assessments,  we  re-design,  implement,  and  maintain  reasonable  safeguards  to  minimize  identified  risks;  reasonably  address  any
identified gaps in existing safeguards; and regularly monitor the effectiveness of our safeguards. Primary responsibility for the day-to-day assessment and
management  of  risks  from  cybersecurity,  including  the  prevention,  mitigation,  detection,  and  remediation  of  cybersecurity  incidents,  rests  with  an  IT
consultant who reports to management.

As part of our overall risk management system, we monitor and test our safeguards and train our employees on these safeguards. Personnel at all levels and
departments are made aware of our cybersecurity policies through trainings.

We engage consultants, or other third parties in connection with our risk assessment processes. These service providers assist us to design and implement
our cybersecurity policies and procedures, as well as to monitor and test our safeguards. We require each third-party service provider to certify that it has
the ability to implement and maintain appropriate security measures, consistent with all applicable laws, to implement and maintain reasonable security
measures in connection with their work with us, and to promptly report any suspected breach of its security measures that may affect our company.

One of the key functions of our board of directors is informed oversight of our risk management process, including risks from cybersecurity threats. Our
board  of  directors  is  responsible  for  monitoring  and  assessing  strategic  risk  exposure,  and  our  executive  officers  are  responsible  for  the  day-to-day
management  of  the  material  risks  we  face.  Our  board  of  directors  administers  its  cybersecurity  risk  oversight  function  directly  as  a  whole,  as  well  as
through the audit committee.

35

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
To  date,  no  cybersecurity  incident  (or  aggregation  of  incidents)  or  cybersecurity  threat  has  materially  affected  our  results  of  operations  or  financial
condition. However, an actual or perceived breach of our security could damage our reputation, interfere with the progress of our clinical trials, interfere
with  our  efforts  to  pursue  regulatory  approvals  for  our  product  candidates,  or  subject  us  to  third-party  lawsuits,  regulatory  fines  or  other  actions  or
liabilities,  any  of  which  could  adversely  affect  our  business,  operating  results  or  financial  condition.  We  have  attempted  to  preemptively  mitigate  the
financial  impact  of  any  cybersecurity  incident  and  currently  maintain  a  cyber  liability  insurance  policy.  However,  our  cyber  liability  insurance  may  be
inadequate or may not be available in the future on acceptable terms, or at all. In addition, our cyber liability insurance policy may not cover all claims
made against us, and defending a suit, regardless of its merit, could be costly and divert management’s attention from our business and operations. For
further information regarding risks from cybersecurity threats, please refer to “Item 1A. RISK FACTORS—Risks Related to Our Business”.

ITEM 2.

PROPERTIES.

Our  corporate  headquarters  is  located  at  36  Crosby  Drive,  Suite  100,  Bedford,  Massachusetts.  We  currently  lease  approximately  20,000  square  feet  of
office and lab space in Bedford, Massachusetts under a lease that was originally executed on January 7, 2022. We moved into our headquarters during the
third quarter of 2023. The lease has an initial noncancellable term of ten years.

We terminated our previous lease, as planned, for our previous headquarters in Lexington, Massachusetts, also during the third quarter of 2023.

We  believe  that  our  facilities  are  adequate  to  meet  our  current  needs,  and  that  suitable  additional  alternative  spaces  will  be  available  in  the  future  on
commercially reasonable terms for our future growth.

ITEM 3.

LEGAL PROCEEDINGS.

From time to time, we may be involved in litigation that arises through the normal course of business. As of the date of this filing, we are not aware of any
material legal proceedings to which we or our subsidiary is a party or to which any of our property is subject, nor are we aware of any such threatened or
pending litigation or proceedings known to be contemplated by governmental authorities.

There are no material proceedings in which any of our directors, officers or affiliates or any registered or beneficial stockholder of more than 5% of our
common stock, or any associate of any of the foregoing, is an adverse party or has a material interest adverse to our interest.

ITEM 4. MINE SAFETY DISCLOSURES.

Not applicable.

36

 
 
 
 
 
 
 
 
 
 
ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF

PART II

EQUITY SECURITIES.

Market Information

Our common stock trades on The Nasdaq Capital Market under the symbol “PULM”.

Stockholders

As of March 25, 2024, there were approximately 43 stockholders of record of our common stock.

Dividends

We have not paid dividends to our stockholders since inception and do not plan to pay cash dividends in the foreseeable future. Any future declaration of
dividends will depend on our earnings, capital requirements, financial condition, prospects and any other factors that our board of directors deems relevant,
as well as compliance with the requirements of state law. In general, as a Delaware corporation, we may pay dividends out of surplus capital or, if there is
no  surplus  capital,  out  of  net  profits  for  the  fiscal  year  in  which  a  dividend  is  declared  and/or  the  preceding  fiscal  year.  We  currently  intend  to  retain
earnings, if any, for reinvestment in our business.

Unregistered Sales of Securities

None.

Issuer Purchases of Equity Securities

Not applicable.

ITEM 6.

RESERVED.

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS.

The information set forth below should be read in conjunction with our consolidated financial statements and related notes thereto included elsewhere in
this  Annual  Report  on  Form  10-K.  This  discussion  and  analysis  contain  forward-looking  statements  based  on  our  current  expectations,  assumptions,
estimates and projections. These forward-looking statements involve risks and uncertainties. Our actual results could differ materially from those indicated
in  these  forward-looking  statements  as  a  result  of  certain  factors,  including  those  discussed  in  Item  1  of  this  Annual  Report  on  Form  10-K,  entitled
“Business,” under “Forward-Looking Statements” and Item 1A of this Annual Report on Form 10-K, entitled “Risk Factors.” References in this discussion
and  analysis  to  “us,”  “we,”  “our,”  or  our  “Company”  refer  to  Pulmatrix,  Inc.,  a  Delaware  corporation,  and  our  subsidiary,  Pulmatrix  Operating
Company, Inc., a Delaware corporation.

Overview

We  are  a  clinical-stage  biopharmaceutical  company  focused  on  the  development  of  novel  inhaled  therapeutic  products  intended  to  prevent  and  treat
respiratory and other diseases with important unmet medical needs using our patented iSPERSE™ technology. Our proprietary product pipeline includes
treatments for central nervous system (“CNS”) disorders such as acute migraine and serious lung diseases such as Chronic Obstructive Pulmonary Disease
(“COPD”) and allergic bronchopulmonary aspergillosis (“ABPA”). Our product candidates are based on our proprietary engineered dry powder delivery
platform, iSPERSE™,  which  seeks  to  improve  therapeutic  delivery  to  the  lungs  by  optimizing  pharmacokinetics  and  reducing  systemic  side  effects  to
improve patient outcomes.

We design and develop inhaled therapeutic products based on our proprietary dry powder delivery technology, iSPERSE™, which enables delivery of small
or large molecule drugs to the lungs by inhalation for local or systemic applications. The iSPERSE™ powders are engineered to be small, dense particles
with highly efficient dispersibility and delivery to airways. iSPERSE™ powders can be used with an array of dry powder inhaler technologies and can be
formulated  with  a  broad  range  of  drug  substances  including  small  molecules  and  biologics.  We  believe  the  iSPERSE™  dry  powder  technology  offers
enhanced drug loading and delivery efficiency that outperforms traditional lactose-blend inhaled dry powder therapies.

37

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
We believe the advantages of using the iSPERSE™ technology include reduced total inhaled powder mass, enhanced dosing efficiency, reduced cost of
goods, and improved safety and tolerability profiles.

Our goal is to develop breakthrough therapeutic products that are safe, convenient, and more effective than the existing therapeutic products for respiratory
and other diseases where iSPERSE™ properties are advantageous.

Our current pipeline is aligned to this goal as we develop iSPERSE™-based therapeutic candidates which target the prevention and treatment of a range of
diseases, including CNS disorders and pulmonary diseases. These therapeutic candidates include PUR3100 for the treatment of acute migraine, PUR1800
for the treatment of acute exacerbations of chronic obstructive pulmonary disease (“AECOPD”), and PUR1900 for the treatment of ABPA in patients with
asthma and in patients with cystic fibrosis (“CF”). Each program is enabled by its unique iSPERSE™ formulation designed to achieve specific therapeutic
objectives.

We  intend  to  capitalize  on  our  iSPERSE™  technology  platform  and  our  expertise  in  inhaled  therapeutics  to  identify  new  product  candidates  for  the
prevention  and  treatment  of  diseases,  including  those  with  considerable  unmet  medical  needs,  and  to  build  our  product  pipeline  beyond  our  existing
candidates.  In  order  to  advance  clinical  trials  for  our  therapeutic  candidates  and  leverage  the  iSPERSE™  platform  to  enable  delivery  of  partnered
compounds, we intend to form strategic alliances with third parties, including pharmaceutical and biotechnology companies or academic or private research
institutes.

We expect to continue to incur substantial expenses and operating losses for at least the next several years based on our drug development plans. We expect
our expenses and capital requirements will increase substantially in connection with our ongoing activities, as we:

● Pursue  further  clinical  studies  for  PUR3100,  an  orally  inhaled  dihydroergotamine  (“DHE”)  including  a  Phase  2  clinical  study  for  the
treatment of acute migraine. We received Food and Drug Administration (“FDA”) acceptance of our Investigational New Drug Application
(“IND”) and a “study may proceed” letter in September 2023, positioning PUR3100 as Phase 2-ready for potential financing or partnership
discussions.

● Pursue partnership or other alternatives to monetize or advance PUR1800, focusing on the development of an orally inhaled kinase inhibitor

for treatment of AECOPD.

● Terminate the PUR1900 Phase 2b study and seek to monetize PUR1900 in the United States.

● Capitalize  on  our  proprietary  iSPERSE™  technology  and  our  expertise  in  inhaled  therapeutics  and  particle  engineering  to  identify  new

product candidates for prevention and treatment of diseases, including those with important unmet medical needs.

● Invest in protecting and expanding our intellectual property portfolio and file for additional patents to strengthen our intellectual property

rights.

● Seek partnerships and license agreements to support the product development and commercialization of our product candidates.

We do not have any products approved for sale and have not generated any revenue from product sales. We will not generate product sales unless and until
we successfully complete clinical developments and obtain regulatory approvals for our product candidates. Additionally, we currently utilize third-party
contract research organizations (“CROs”) to carry out our clinical development activities and third-party contract manufacturing organizations (“CMOs”)
to carry out our clinical manufacturing activities as we do not yet have a commercial organization. If we obtain regulatory approval for any of our product
candidates, we expect to incur substantial expenses related to developing our internal commercialization capability to support product sales, marketing and
distribution. Accordingly, we anticipate that we will seek to fund our operations through public or private equity or debt financings, licensing arrangements,
collaborations with third parties, non-dilutive grants or other sources, potentially including collaborative commercial arrangements. Likewise, we intend to
seek to limit our commercialization costs by partnering with other companies with complementary capabilities or larger infrastructure including sales and
marketing.

Because of the numerous risks and uncertainties associated with product development, we are unable to predict the timing or amount of increased expenses
or when or if we will be able to achieve or maintain profitability. Even if we are able to generate product sales, we may not become profitable. If we fail to
become profitable or are unable to sustain profitability on a continuing basis, we may be unable to continue our operations at planned levels and be forced
to reduce or terminate our operations.

38

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Therapeutic Candidates

PUR3100

In  2020,  we  developed  PUR3100,  the  iSPERSE™  formulation  of  DHE,  for  the  treatment  of  acute  migraine.  Currently  DHE  is  only  available  as
subcutaneous, intravenous infusion or intranasal delivery. If approved for commercialization, PUR3100 has the opportunity to be the first orally inhaled
DHE treatment for acute migraine and be an alternative to other acute therapies. Given the oral inhaled route of delivery, PUR3100 is anticipated to provide
relief from the rapid onset of migraine symptoms and provide a favorable tolerability profile.

A  total  of  three  14-day  good  laboratory  practice  toxicology  studies  have  been  completed  with  PUR3100  to  support  single-dose  clinical  studies. We  are
planning  to  conduct  a  chronic  toxicology  study  to  support  long-term  dosing.  Based  on  discussions  with  the  FDA,  this  would  complete  the  non-clinical
requirements to support a new drug application (“NDA”).

We have completed several interactions with the FDA, and they have confirmed that, in addition to the planned Phase 2 and Phase 3 studies, long-term
safety should be assessed in a minimum of one hundred patients for six months of dosing and fifty patients for twelve months of dosing. The FDA also
confirmed  that  it  will  be  necessary  to  perform  a  safety  study  administering  PUR3100  to  otherwise  healthy  patients  with  asthma  before  an  NDA  is
submitted.

On September 26, 2022, we announced the completion of patient dosing in a Phase 1 clinical study, performed in Australia, designed to assess not only
safety, tolerability, and pharmacokinetics of PUR3100 in humans, but also provide preliminary comparative bioavailability data to support the use of the
505(b)(2)  pathway  for  marketing  authorization.  The  study  design  was  a  double-dummy,  double-blinded  trial  to  assess  the  safety,  tolerability,  and
pharmacokinetics  of  three  dose  levels  of  single  doses  of  inhaled  PUR3100  with  intravenous  (“IV”)  placebo,  as  compared  to  IV  DHE  (DHE  mesylate
injection) with inhaled placebo. Twenty-six healthy subjects were enrolled and each of the four groups contained at least six subjects.

On  January  4,  2023,  we  announced  topline  results.  PUR3100  was  well-tolerated  and  there  was  a  lower  incidence  of  nausea  in  PUR3100  dose  groups
compared to IV DHE, and we presented the Phase 1 study data at the American Headache Society 65th Annual Meeting in June 2023. In contrast to IV
DHE, no vomiting was observed in any of the PUR3100 dose groups. Oral inhalation of PUR3100 achieved peak exposures in the targeted therapeutic
range at all doses and the Tmax occurred at five minutes after dosing.

Based  on  the  rapid  systemic  exposure  in  the  therapeutic  range  and  the  improved  side  effect  profile  relative  to  IV  dosing,  we  believe  the  PUR3100
formulation of DHE may differentiate from approved DHE products or those in development. If effectiveness is demonstrated, PUR3100 may offer the
convenience of being self-administered with a pharmacokinetic profile that may potentially provide rapid onset of action.

In  September  2023,  we  announced  that  the  FDA  accepted  the  PUR3100  IND  and  the  receipt  of  a  “study  may  proceed”  letter  for  the  clinical  study:  “A
Phase 2, Multicenter, Randomized, Double-Blind, Placebo-Controlled, Single Event Study to Evaluate the Safety, Tolerability, and Efficacy of PUR3100
(Dihydroergotamine  Mesylate  Inhalation  Powder)  in  the  Acute  Treatment  of  Migraine”.  We  anticipate  that  this  Phase  2  clinical  study  will  initiate  once
financing or partnership arrangements have been made.

PUR1800

PUR1800 is a Narrow Spectrum Kinase Inhibitor, engineered with our iSPERSE™ technology, being developed for the treatment of acute exacerbations in
chronic obstructive pulmonary disease (AECOPD). PUR1800 targets p38 MAP kinases (p38MAPK), Src kinases, and Syk kinases. These kinases play a
critical role in chronic inflammation and airway remodeling.

We completed the Phase 1b safety, tolerability, and pharmacokinetics clinical study of PUR1800 for patients with stable moderate-severe COPD. Topline
data was delivered in the first quarter of 2022.

The clinical study, performed at the Medicines Evaluation Unit in Manchester, UK, was a randomized, three-way crossover double-blind study with 14
days of daily dosing which included placebo and one of two doses of PUR1800, and included a 28-day follow up period after each treatment period. A total
of 18 adults with stable COPD were enrolled. Safety and tolerability as well as systemic pharmacokinetics (“PK”) were evaluated.

PUR1800  was  well  tolerated  and  there  were  no  observed  safety  signals.  The  PK  data  indicate  that  PUR1800  results  in  low  and  consistent  systemic
exposure when administered via oral inhalation. The topline data, along with the results from chronic toxicology studies, was delivered in the first quarter
of  2022  and  presented  at  the  American  Academy  of  Allergy,  Asthma  &  Immunology  (AAAAI)  conference  in  the  first  quarter  of  2023  and  support  the
continued development of PUR1800 for the treatment of AECOPD and other inflammatory respiratory diseases. We completed all data analysis to inform a
study design for a potential Phase 2 efficacy and safety study, treating subjects with AECOPD. We plan to pursue an appropriate partner as a path forward
to advance PUR1800 into a Phase 2 clinical trial.

39

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Toxicology  studies  in  rats  and  dogs,  with  durations  of  six  and  nine  months  respectively,  are  complete.  The  data  from  both  studies  demonstrated  that
PUR1800  is  safe  and  well  tolerated  with  chronic  dosing,  with  little  to  no  progression  of  findings  from  28-day  studies.  We  believe  that  this  indicates
potential for chronic dosing of PUR1800, enabling us to explore PUR1800 therapy for chronic respiratory diseases such as steroid resistant asthma, COPD,
or idiopathic pulmonary fibrosis. While the program is currently in development for treatment of acute exacerbation of COPD, these positive toxicology
study results could expand potential indications and value of the program.

PUR1900

On April 15, 2019, we entered into a Development and Commercialization Agreement (the “Cipla Agreement”) with Cipla Technologies LLC (“Cipla”) for
the  co-development  and  commercialization,  on  a  worldwide,  except  for  the  Cipla  Territory  defined  below,  exclusive  basis,  of  PUR1900,  our  inhaled
iSPERSE™ drug delivery system (the “Product”) enabled formulation of the antifungal drug itraconazole, which is only available as an oral drug, for the
treatment of all pulmonary indications, including ABPA in patients with asthma. We entered into an amendment to the Cipla Agreement on November 8,
2021  (the  “Second  Amendment”)  and  a  subsequent  amendment  on  January  6,  2024  (the  “Third  Amendment”).  All  references  to  the  Cipla  Agreement
herein  refer  to  the  Cipla  Agreement,  as  amended.  The  Cipla  Agreement  will  remain  in  effect  in  perpetuity,  unless  otherwise  earlier  terminated  in
accordance with its terms.

Pursuant to the Third Amendment, all development and commercialization activities with respect to the Product in all markets other than the United States
(the “Cipla Territory”) will be conducted exclusively by Cipla at Cipla’s sole cost and expense, and Cipla shall be entitled to all profits from the sale of the
Product  in  the  Cipla  Territory,  except  that  if  Cipla  successfully  transfers  manufacturing  of  the  Product  for  the  Cipla  Territory  to  a  manufacturing  site
determined by Cipla, we will become entitled to a royalty equal to 2% of net sales in the Cipla Territory.

We continued to develop PUR1900 pursuant to the Cipla Agreement during 2023. We and Cipla were each responsible for 60% and 40%, respectively, of
our  overhead  costs  and  the  time  spent  by  our  employees  and  consultants  on  development  of  the  Product  (“Direct  Costs”).  We  have  shared  all  other
development costs with Cipla that are not Direct Costs, such as the cost of clinical research organizations, manufacturing costs and other third-party costs,
on a 50/50 basis.

Pursuant to the Third Amendment, we and Cipla agreed to stop patient enrollment at 8 subjects in the ongoing Phase 2b clinical study. During the period
commencing on January 6, 2024 and ending July 30, 2024 (the “Wind Down Period”), we will complete all Phase 2b activities, assign or license all patents
to Cipla and their registration with the appropriate authorities in the Cipla Territory, complete a physical and demonstrable technology transfer and secure
all data from the Phase 2b study for inclusion in the safety database for the Cipla Territory. We will share costs with Cipla during the Wind Down Period in
the same proportions discussed above but subject to a maximum reimbursement amount by Cipla as approved by the joint steering committee.

After  the  conclusion  of  the  Wind  Down  Period,  Pulmatrix  will  bear  no  further  financial  responsibility  for  the  commercialization  and  development  of
PUR1900 in the Cipla Territory, with such commercialization and development expenses of the Product in the Cipla Territory to be borne at Cipla’s sole
cost and expense after January 6, 2024. We will receive 2% royalties on any potential future net sales by Cipla outside the United States.

Financial Overview

Revenues

To  date,  we  have  not  generated  any  product  sales.  The  2023  and  2022  revenues  were  primarily  generated  from  the  Cipla  Agreement  as  related  to  our
PUR1900 program.

For more discussion on the Cipla Agreement, please see Note 6, Significant Agreements, to our consolidated financial statements included in this report.

Research and Development Expenses

Research and development expenses consist primarily of costs incurred for the research and development of our preclinical and clinical candidates, and
include:

● employee-related expenses, including salaries, benefits and stock-based compensation expense;

● expenses incurred under agreements with CROs or CMOs, and consultants that conduct our clinical trials and preclinical activities;

● the cost of acquiring, developing and manufacturing clinical trial materials and lab supplies;

40

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
● facility, depreciation and other expenses, which include direct and allocated expenses for rent, maintenance of our facility, insurance and other

supplies;

● costs associated with preclinical activities and clinical regulatory operations; and

● consulting and professional fees associated with research and development activities.

We expense research and development costs to operations as incurred. We recognize costs for certain development activities, such as clinical trials, based
on an evaluation of the progress to completion of specific tasks using data such as patient enrollment, clinical site activations or information provided to us
by our vendors.

Research  and  development  activities  are  central  to  our  business  model.  We  utilize  a  combination  of  internal  and  external  efforts  to  advance  product
development from early-stage work to clinical trial manufacturing and clinical trial support. External efforts include work with consultants and substantial
work at CROs and CMOs. We support an internal research and development team and facility for our pipeline and other potential development programs.
To  move  these  programs  forward  along  our  development  timelines,  a  large  portion  (approximately  86%)  of  our  staff  are  research  and  development
employees.  In  addition,  we  maintain  an  office  and  research  and  development  facility  which  includes  capital  equipment  for  the  manufacture  and
characterization  of  our  iSPERSE™  powders  for  our  development  efforts.  As  we  identify  opportunities  for  iSPERSE™  in  additional  indications,  we
anticipate additional headcount, capital, and development costs will be incurred to support these programs. Because of the numerous risks and uncertainties
associated with product development, however, we cannot determine with certainty the duration and completion costs of these or other current or future
preclinical studies and clinical trials. The duration, costs and timing of clinical trials and development of our product candidates will depend on a variety of
factors,  including  the  uncertainties  of  future  clinical  and  preclinical  studies,  uncertainties  in  clinical  trial  enrollment  rates  and  changing  government
regulation.  In  addition,  the  probability  of  success  for  each  product  candidate  will  depend  on  numerous  factors,  including  competition,  manufacturing
capability and commercial viability.

General and Administrative Expenses

General  and  administrative  expenses  consist  principally  of  salaries,  benefits  and  related  costs  such  as  stock-based  compensation  for  personnel  and
consultants in executive, finance, business development, corporate communications and human resource functions, facility costs not otherwise included in
research and development expenses, patent filing fees and legal fees. Other general and administrative expenses include travel expenses, expenses related
to being a publicly traded company and professional fees for consulting, auditing and tax services.

We  anticipate  that  our  general  and  administrative  expenses  will  increase  in  the  future  as  they  relate  to  audit,  legal,  regulatory,  and  tax-related  services
associated  with  maintaining  compliance  with  exchange  listing  and  Securities  and  Exchange  Commission  (“SEC”)  requirements,  director  and  officer
liability  insurance,  investor  relations  costs  and  other  costs  associated  with  being  a  public  company.  Additionally,  if  and  when  we  believe  a  regulatory
approval  of  a  product  candidate  appears  likely,  we  anticipate  an  increase  in  staffing  and  related  expenses  as  a  result  of  our  preparation  for  commercial
operations, especially as it relates to the sales and marketing of our product candidates.

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 our
consolidated financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses
and the disclosure of contingent assets and liabilities in our consolidated financial statements. We base our estimates on historical experience, known trends
and events, and other assumptions that we believe are reasonable under the circumstances, and we evaluate these estimates on an ongoing basis. Actual
results may differ from these estimates under different assumptions or conditions.

Our significant accounting policies are described in the notes to our consolidated financial statements appearing elsewhere in this Annual Report on Form
10-K. We believe the following are our critical accounting estimates which involve a significant level of uncertainty at the time the estimate was made, and
changes in them have had or are reasonably likely to have a material effect on our financial condition or results of operations.

41

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Revenue Recognition

Our principal source of revenue during the years ended December 31, 2023 and 2022 was derived from the Cipla Agreement. Revenue is recognized for the
Cipla Agreement over the period of performance using a measure of progress based on costs incurred to date relative to the total expected costs (i.e., cost-
to-cost method). A significant level of judgment is necessary to estimate the total expected costs. The amount of revenue recognized in a given period is
dependent on the accuracy of our estimate of the total expected costs. When estimating total expected costs, we make assumptions and estimates regarding
the total amount of internal and external resources required to satisfy the performance obligation, including the contracted scope of work with Cipla and
tasks  required  to  be  completed,  along  with  our  ability  and  that  of  our  contracted  third  parties  to  successfully  carry  out  expected  duties,  achieve  certain
regulatory requirements and meet expected deadlines. We evaluate our measure of progress to recognize revenue for these agreements at each reporting
date  and,  as  necessary,  adjust  the  measure  of  progress  and  related  revenue  recognition.  We  also  evaluate  contract  modifications  and  amendments  to
determine whether any changes should be accounted for prospectively or on a cumulative catch-up basis.

Accrued Research and Development Costs

We have various contracts with third parties related to our research and development activities. Research and development costs are expensed as incurred.
Costs  that  are  incurred  but  not  billed  to  us  as  of  the  end  of  the  period  are  accrued.  Estimating  the  expense  incurred  with  CROs  and  CMOs  involves
significant  uncertainty  because  these  service  providers  may  invoice  us  several  months  in  arrears,  on  a  pre-determined  schedule  or  when  contractual
milestones  are  met;  however,  some  require  advance  payments.  We  make  estimates  of  the  expense  incurred  in  each  period  based  on  the  information
available to us, our knowledge of the nature of the contractual activities generating such costs and communications with the service providers. Although we
do  not  expect  our  estimates  to  be  materially  different  from  amounts  actually  incurred,  such  estimates  for  the  status  and  timing  of  services  performed
relative  to  the  actual  status  and  timing  of  services  performed  may  vary  and  could  result  in  us  reporting  amounts  that  are  too  high  or  too  low  in  any
particular period. To date, our estimates have not been materially different than amounts actually incurred.

Results of Operations

Comparison of the Years Ended December 31, 2023 and 2022

The following table sets forth our results of operations for each of the periods set forth below (in thousands):

Revenues

Operating expenses:

Research and development
General and administrative

Total operating expenses
Loss from operations
Other income (expense):

Interest income
Other expense, net

Net loss

Year Ended December 31,

2023

2022

Change

7,298   

$

6,071    $

1,227 

15,518   
6,520   
22,038   
(14,740)  

867   
(248)  
(14,121)  

$

18,240   
6,778   
25,018   
(18,947)  

309   
(198)  
(18,836)   $

(2,722)
(258)
(2,980)
4,208 

558 
(50)
4,715 

$

$

Revenues — Revenues were $7.3 million for the year ended December 31, 2023, as compared to $6.1 million for the year ended December 31, 2022, an
increase of $1.2 million. The increase is related to higher activity under the Cipla Agreement during the period.

Research and development expenses — Research and development expenses were $15.5 million for the year ended December 31, 2023, as compared to
$18.2 million for the year ended December 31, 2022, a decrease of approximately $2.7 million. The decrease was primarily due to decreased spend of $2.7
million in costs related to our PUR3100 program, $1.0 million of employment costs, and $0.7 million in costs related to our PUR1800 program, partially
offset by an increase of $1.3 million in costs related to our PUR1900 program and $0.4 million of other operating costs.

General and administrative expenses — General and administrative expenses were $6.5 million for the year ended December 31, 2023, as compared to
$6.8 million for the year ended December 31, 2022, a decrease of approximately $0.3 million. The decrease was primarily due to decreased spend of $0.7
million in employment costs, partially offset by an increase of $0.4 million in legal and professional services costs.

42

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
    
 
  
 
 
    
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
Liquidity and Capital Resources

Through December 31, 2023, we incurred an accumulated deficit of $287.6 million, primarily as a result of expenses incurred through a combination of
research and development activities related to our various product candidates and general and administrative expenses supporting those activities. We have
financed our operations since inception primarily through the sale of preferred and common stock, the issuance of convertible promissory notes, term loans,
and collaboration and license agreements. Our total cash and cash equivalents balance as of December 31, 2023 was $19.2 million.

We anticipate that we will continue to incur losses over the next several years due to development costs associated with our iSPERSE™ pipeline programs.
We expect that we will need additional capital to fund our operations as we continue to incur research and development and general and administrative
expenses.  We  may  raise  such  capital  through  a  combination  of  equity  offerings,  debt  financings,  other  third-party  funding  and  other  collaborations  and
strategic alliances. We are currently exploring financing or partnership arrangements to develop and initiate a potential Phase 2 clinical study for PUR3100.

We  expect  that  our  existing  cash  and  cash  equivalents  as  of  December  31,  2023  will  enable  us  to  fund  our  operating  expenses  and  capital  expenditure
requirements for at least the next 12 months following the date of this Annual Report on Form 10-K and into the first quarter of 2026. Such projections
reflect the Third Amendment with Cipla and operational efficiencies and prioritization of spending implemented in the second quarter of 2023 and the first
quarter of 2024. We have based our projections of operating capital requirements on assumptions that may prove to be incorrect, and we may use all of our
available capital resources sooner than we expect. Because of the numerous risks and uncertainties associated with research, development, achievement of
contingent milestones and commercialization of pharmaceutical products, we are unable to estimate the exact amount of our operating capital requirements.

We have no material off-balance sheet arrangements that have or are reasonably likely to have a current or future effect on our financial condition, changes
in financial condition, revenues or expenses, results of operations, liquidity, capital expenditures or capital resources that is material to investors.

The following table sets forth the major sources and uses of cash for each of the periods set forth below (in thousands):

Net cash used in operating activities
Net cash used in investing activities
Net cash provided by financing activities
Net decrease in cash, cash equivalents, and restricted cash

Net cash used in operating activities

Year Ended December 31,
2023

2022

  $

  $

(15,985)  
(676)  
53   
(16,608)  

(19,356)
(86)
1,230 
(18,212)

Net cash used in operating activities for the year ended December 31, 2023 was $16.0 million, which was primarily the result of a net loss of $14.1 million
and $4.3 million in cash outflows associated with changes in operating assets and liabilities, partially offset by $2.4 million of net non-cash adjustments.

Net cash used in operating activities for the year ended December 31, 2022 was $19.4 million, which was primarily the result of a net loss of $18.8 million
and $3.2 million in cash outflows associated with changes in operating assets and liabilities, partially offset by $2.7 million of net non-cash adjustments.

Net cash used in investing activities

Net cash used in investing activities for the years ended December 31, 2023 and 2022 was due to purchases of property and equipment.

Net cash provided by financing activities

Net cash provided by financing activities for the year ended December 31, 2023 resulted from proceeds from the issuance of common stock, net of issuance
costs, under the Sales Agreement (as defined below).

Net cash provided by financing activities for the year ended December 31, 2022 resulted from proceeds from the issuance of common stock, net of issuance
costs, under the Sales Agreement (as defined below), partially offset by the payment of preferred stock issuance costs from a registered direct offering in
December 2021.

43

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Financings

In May 2021, we entered into an At-The-Market Sales Agreement (the “Sales Agreement”) with H.C. Wainwright and Co., LLC (“HCW”) to act as our
sales agent with respect to the issuance and sale of up to $20,000,000 of our shares of common stock, from time to time in an at-the-market public offering
(the  “ATM  Offering”).  Sales  of  common  stock  under  the  Sales  Agreement  are  made  pursuant  to  an  effective  shelf  registration  statement  on  Form  S-3,
which was filed with the SEC on May 26, 2021, and subsequently declared effective on June 9, 2021 (File No. 333-256502), and a related prospectus.
HCW acts as our sales agent on a commercially reasonable efforts basis, consistent with its normal trading and sales practices and applicable state and
federal laws, rules and regulations and the rules of Nasdaq. If expressly authorized by us, HCW may also sell our common stock in privately negotiated
transactions. There is no specific date on which the ATM Offering will end, there are no minimum sale requirements and there are no arrangements to place
any of the proceeds of the ATM Offering in an escrow, trust or similar account. HCW is entitled to compensation at a fixed commission rate of 3.0% of the
gross proceeds from the sale of our common stock pursuant to the Sales Agreement. During the year ended December 31, 2023, we sold 13,100 shares of
common stock under the Sales Agreement at a weighted-average price of approximately $4.25 per share, which resulted in net proceeds of approximately
$53 thousand. During the year ended December 31, 2022, we sold 252,013 shares of common stock under the Sales Agreement at a weighted-average price
of approximately $5.70 per share, which resulted in net proceeds of approximately $1.4 million.

Known Trends, Events and Uncertainties

In May 2023, the World Health Organization determined that COVID-19 no longer fit the definition of a public health emergency and the U.S. government
announced its plan to let the declaration of a public health emergency associated with COVID-19 expire on May 11, 2023. The COVID-19 pandemic and
its ongoing effects are expected to remain a serious threat for an indefinite future period and may continue to create significant economic uncertainty and
volatility  in  the  credit  and  capital  markets,  supply  chain  issues,  global  shortages  of  supplies,  materials  and  products,  and  contribute  to  rising  global
inflation.  In  addition,  the  ongoing  conflicts  in  Ukraine  and  Israel,  including  related  sanctions  and  countermeasures,  are  difficult  to  predict,  and  could
adversely  impact  geopolitical  and  macroeconomic  conditions,  the  global  economy,  and  contribute  to  increased  market  volatility,  which  may  in  turn
adversely  affect  our  business  and  operations.  We  may  not  be  able  to  raise  sufficient  additional  capital  and  may  tailor  our  drug  candidate  development
program based on the amount of funding we are able to raise in the future. Nevertheless, there is no assurance that these initiatives will be successful.

Other than as discussed above and elsewhere in this report, we are not aware of any trends, events or uncertainties that are likely to have a material effect
on our financial condition.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

Not applicable.

ITEM 8.

FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.

The information required by this Item 8 is included at the end of this Annual Report on Form 10-K beginning on page F-1.

ITEM 9.

CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE.

Not applicable.

ITEM 9A. CONTROLS AND PROCEDURES.

Disclosure Controls and Procedures

Our Principal Executive Officer and Principal Financial Officer, after evaluating the effectiveness of our disclosure controls and procedures (as defined in
Exchange Act Rules 13a-15(e) and 15d-15(e)) as of the end of the period covered by this Annual Report on Form 10-K, have concluded that, based on such
evaluation, our disclosure controls and procedures were effective to ensure that information required to be disclosed by us in the reports that we file or
submit under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms, and is
accumulated  and  communicated  to  our  management,  including  our  Principal  Executive  Officer  and  Principal  Financial  Officer  as  appropriate  to  allow
timely decisions regarding required disclosure.

44

 
 
 
 
 
 
 
 
 
 
 
Internal Control over Financial Reporting

Management’s Annual Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rule 13a-15(f) under the
Exchange Act. Internal control over financial reporting is a process designed by, or under the supervision of, our Principal Executive Officer and Principal
Financial  Officer,  and  effected  by  our  board  of  directors,  management  and  other  personnel,  to  provide  reasonable  assurance  regarding  the  reliability  of
financial reporting and the preparation of consolidated financial statements for external purposes in accordance with GAAP, including those policies and
procedures that: (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect our transactions and the disposition of our
assets, (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of consolidated financial statements in accordance
with GAAP and that receipts and expenditures are being made only in accordance with authorizations of our management and board of directors, and (iii)
provide  reasonable  assurance  regarding  prevention  or  timely  detection  of  unauthorized  acquisition,  use,  or  disposition  of  our  assets  that  could  have  a
material effect on the consolidated financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of
effectiveness  to  future  periods  are  subject  to  the  risk  that  controls  may  become  inadequate  because  of  changes  in  conditions,  or  that  the  degree  of
compliance with policies and procedures may deteriorate.

Management  evaluates  the  effectiveness  of  our  internal  control  over  financial  reporting  based  on  the  2013  framework  in  Internal Control — Integrated
Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on this evaluation, management concluded that our
internal control over financial reporting was effective as of December 31, 2023.

Changes in Internal Controls over Financial Reporting

There  were  no  changes  in  our  internal  control  over  financial  reporting  that  occurred  during  our  last  fiscal  quarter  ended  December  31,  2023  that  have
materially affected, or are 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.

45

 
 
 
 
 
 
 
 
 
 
 
 
ITEM 10. DIRECTORS, EXECUTIVE OFFICERS, AND CORPORATE GOVERNANCE

Management and the Board of Directors

PART III

The following table sets forth the persons who serve as our executive officers and directors, and their ages as of December 31, 2023.

Name
Teofilo Raad
Peter Ludlum
Margaret Wasilewski, M.D.
Richard Batycky, Ph.D.
Todd Bazemore
Christopher Cabell M.D.
Michael J. Higgins
Anand Varadan

Management

  Age
53
68
66
55
53
55
61
57

  Position
  Chief Executive Officer and Director

Interim Chief Financial Officer

  Chief Medical Officer
  Director
  Director
  Director
  Director
  Director

Teofilo Raad. Mr. Raad was appointed Chief Executive Officer in May 2019. Prior to his appointment, he served as Pulmatrix’s Chief Business Officer and
led commercial and business development efforts. He has more than 20 years of commercial healthcare and life science leadership experience and most
recently served as Chief Commercial Officer at Option Care from 2013-2016, where he helped separate the specialty home infusion business unit from
Walgreens to create the nation’s largest independent home infusion provider. Prior to that, he was Vice President and business unit head at Sunovion with
overall responsibility for CNS and respiratory products, including assets in asthma and COPD from 2010 to 2012. During his time at Sunovion, Mr. Raad
led  multiple  products  through  clinical  development  to  commercialization  and  implemented  new  strategic  alliances  in  the  US  and  Japan.  Earlier  in  his
career, he also gained direct launch experience with Sporanox®, Janssen’s oral itraconazole product to treat fungal infections, and brings that experience to
the Company’s programs. Mr. Raad holds a BS in Business Administration from University of Colorado at Boulder and an MBA from Thunderbird Global
School of Global Management. We believe that Mr. Raad has extensive business experience running the operations of biopharmaceutical companies and
qualifies him to serve as a member of the Board.

Peter Ludlum. Mr. Ludlum has served as our interim Chief Financial Officer, principal accounting officer and principal financial officer since April 2022,
and since December 2021, he has served as our Strategic Advisor – Finance, both pursuant to a November 30, 2021 consulting agreement between the
Company and Danforth. Mr. Ludlum has served as an employee with Danforth Advisors, LLC (“Danforth”), a provider of strategic and operational finance
and  accounting  for  life  science  companies,  since  December  2021.  Prior  to  Danforth,  Mr.  Ludlum  has  worked  as  an  independent  financial  consultant.
Previously, Mr. Ludlum served in several executive roles at Emmaus Life Sciences, Inc. (n/k/a EMI Holding, Inc.), a commercial-stage biopharmaceutical
company, including Co-President, Chief Business Officer, Executive Vice President and Chief Financial Officer, during his tenure from April 2012 until
May 2017. Mr. Ludlum previously served as the Chief Financial Officer of Energy and Power Solutions, Inc., an energy intelligence company, from April
2008  to  December  2011.  He  received  a  B.S.  in  Business  and  Economics  with  a  major  in  accounting  from  Lehigh  University  and  an  MBA  with  a
concentration in Finance from California State University, Fullerton.

Margaret Wasilewski, M.D. Dr. Wasilewski has served as our Chief Medical Officer since March 2022 and brings extensive experience across different
stages of pharmaceutical drug development in various therapeutic areas. She leverages over 20 years of experience in pharmaceutical drug development.
Dr.  Wasilewski  held  various  leadership  roles  at  Eli  Lilly  and  Company,  Targanta  Therapeutics,  Shire,  and  Summit  Therapeutics.  As  President  of  ID
Remedies  LLC,  Dr.  Wasilewski  has  provided  scientific,  medical,  and  clinical  development  consultation  to  various  biopharmaceutical  companies.  Her
clinical development experience includes bacterial and viral infections, sepsis, neurology, and rare disease. Dr. Wasilewski received a medical degree from
Tufts  University  School  of  Medicine  and  is  board  certified  in  Internal  Medicine  and  completed  fellowships  in  Infectious  Diseases  and  Clinical
Pharmacology  at  the  University  of  California-San  Francisco.  Dr.  Wasilewski  received  an  MBA  from  Indiana  University,  Kelly  School  of  Business;  a
master’s degree in Nutrition from the University of California-Berkeley and an undergraduate degree in Chemistry from Rutgers University.

46

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Board of Directors (Non-Employee Directors)

Richard Batycky, Ph.D. Dr. Batycky was appointed to serve as a director of our Company in November 2019. He is currently the President and Chief
Executive Officer of Nocion Therapeutics, Inc. having served in such position since 2018. Dr. Batycky has over two decades of experience with biotech
start-ups from founding to acquisition across an array of platforms and disease states with notable expertise in inhaled drug development. From 2009 to
2014, he was the Chief Scientific Officer and a founder of Civitas Therapeutics, which was acquired by Acorda Therapeutics, Inc., or Acorda. At Acorda,
he served as Chief Technology Officer from 2014 to 2018 where he led its novel dry powder inhalation therapy to treat motor issues in Parkinson’s patients
through to FDA approval as Inbrija™. Prior to Civitas Therapeutics, he was Chief Scientific Officer and Senior VP of R&D at Pulmatrix from 2007 to 2009
and held prior positions at Alkermes and Advanced Inhalation Research from 1998 to 2007. Dr. Batycky received his B.Sc. in Chemical Engineering from
the  University  of  Calgary  and  his  S.M.  and  Ph.D.  in  Chemical  Engineering  from  the  Massachusetts  Institute  of  Technology  (MIT).  We  believe  that  Dr.
Batycky’s noteworthy experience in inhaled drug development in biotechnology companies qualifies him to serve as a member of the Board.

Todd Bazemore. Mr. Bazemore was appointed to serve as a director of our Company in October 2020. Todd Bazemore has served as the President and
Chief  Operating  Officer  of  KALA  BIO,  Inc.  since  December  2021  and  as  the  Chief  Operating  Officer  from  November  2017  through  November  2021.
Previously,  he  served  as  Executive  Vice  President  and  Chief  Operating  Officer  of  Santhera  Pharmaceuticals  (USA)  Inc.,  or  Santhera,  a  pharmaceutical
company and subsidiary of Santhera Pharmaceuticals Holdings AG, from September 2016 until November 2017. Prior to joining Santhera, Mr. Bazemore
served  as  Executive  Vice  President  and  Chief  Commercial  Officer  of  Dyax  Corp.,  or  Dyax,  a  biopharmaceutical  company  focused  on  orphan  diseases,
between  April  2014  and  January  2016,  when  Dyax  was  acquired  by  Shire  plc.  Between  April  2012  and  September  2013,  he  served  as  Vice  President,
Managed  Markets  at  Sunovion  Pharmaceuticals,  Inc.,  or  Sunovion  (a  subsidiary  of  Dainippon  Sumitomo  Pharma  Co.  Ltd.),  a  global  biopharmaceutical
company focused on serious medical conditions. Prior to that, Mr. Bazemore held several roles of increasing responsibility at Sunovion, including Vice
President of Sales and Vice President of the Respiratory Business Unit. He received his Bachelor of Science from the University of Massachusetts, Lowell.
We believe that Mr. Bazemore has extensive business experience running the commercial operations of biopharmaceutical companies and qualifies him to
serve as a member of the Board.

Christopher Cabell, M.D. Dr. Cabell was appointed to serve as a director of our Company in June 2020. He is currently the Chief Medical Officer and
Executive Vice President at Zura Bio Ltd., having joined in January 2023. Prior to joining Zura Bio, Dr. Cabell was Chief Medical Officer and Head of
Clinical  Development  at  Emergent  BioSolutions,  Inc.,  having  joined  in  February  2021.  Previously,  Dr.  Cabell  spent  three  (3)  years  at  Arena
Pharmaceuticals,  Inc.  with  increasing  responsibilities  including  Head  of  Research  and  Development,  and  Chief  Medical  Officer  from  October  2017  to
November 2020. Dr. Cabell spent 10 years at Quintiles Inc. and QuintilesIMS in a variety of management positions including Chief Medical and Scientific
Officer, Global Head of Medical and Project Management, and Global Head of Business Development from October 2007 to September 2017. Prior to
joining Quintiles, Dr. Cabell was on faculty at Duke University School of Medicine in the Division of Cardiology. Dr. Cabell is a Fellow of the American
College of Cardiology and has over 100 peer reviewed publications including in the New England Journal of Medicine, JAMA, and Annals of Internal
Medicine.  Board  certified  in  both  internal  medicine  and  cardiovascular  diseases,  Dr.  Cabell  is  an  honors  graduate  of  Pennsylvania  State  University  and
Duke University, earning both his Medical Degree and a Masters in Health Sciences from the latter. We believe that Dr. Cabell’s noteworthy experience in
clinical drug development in biotechnology companies qualifies him to serve as a member of the Board.

Michael J. Higgins. Mr. Higgins was appointed Chairman of the Board in April 2020. He has been a member of the Board of Directors since June 2015.
He has served as chairman of the board of directors of Voyager Therapeutics., a publicly traded biopharmaceutical company, since June 2019, and served as
Voyager’s Interim CEO from June 2021 through March 2022. He has served as a board member of Genocea Biosciences Inc., a publicly traded immuno-
oncology  company,  from  2015  to  June  2022;  Nocion  Therapeutics,  Inc.,  a  biopharmaceutical  company,  since  September  2020;  Camp4  Therapeutics
Corporation,  a  biopharmaceutical  company,  since  October  2017  and  KinDex  Pharmaceuticals,  Inc.,  a  biotechnology  company,  since  March  2016.  Mr.
Higgins  is  a  serial  entrepreneur  who  has  helped  launch/build  numerous  companies  during  his  career.  He  served  as  Entrepreneur-in-Residence  at  Polaris
Partners,  an  investment  company,  from  2015  to  2020.  From  2003  to  2014  he  served  as  Senior  Vice  President,  Chief  Operating  Officer  at  Ironwood
Pharmaceuticals  Inc,  a  biopharmaceutical  company.  Prior  to  2003,  Mr.  Higgins  held  a  variety  of  senior  business  positions  at  Genzyme  Corporation,
including  Vice  President  of  Corporate  Finance  and  Vice  President  of  Business  Development.  Prior  to  joining  Genzyme  Corporation,  Mr.  Higgins  led
Procept, Inc.’s financial team from founding through its initial public offering. Mr. Higgins earned a B.S. from Cornell University and an M.B.A. from the
Amos  Tuck  School  of  Business  Administration  at  Dartmouth  College.  We  believe  that  Mr.  Higgins’  financial  and  business  expertise,  including  his
diversified background as an executive officer in public pharmaceutical companies, qualifies him to serve as a member of the Board.

47

 
 
 
 
 
 
 
Anand Varadan. Mr. Varadan was appointed to serve as a director of our Company in July 2021. He is currently the founder and President of Ignition
Insights,  LLC,  a  consulting  firm  providing  commercial  and  strategic  consultancy  services  to  biopharma  companies  and  investors.  Previously,  he  was
Executive Vice President, Chief Commercial Officer at Chiasma Inc., a commercial-stage biopharmaceutical company, until its acquisition by Amryt PLC.
Mr. Varadan also served as Executive Vice President, Chief Commercial Officer of Karyopharm Therapeutics, Inc, an oncology-focused pharmaceutical
company, where he started up commercial operations leading to the successful launch of XPOVIO for multiple myeloma. Earlier in his career, Mr. Varadan
held executive leadership roles at Amgen Inc., a biopharmaceutical company, in the U.S., E.U., and Canada including Vice President, U.S. Inflammation
and Nephrology Business Unit and Vice President and General Manager, Amgen Canada. Prior to Amgen, Mr. Varadan was a brand manager at Procter and
Gamble  Company.  Mr.  Varadan  has  a  B.A.  from  George  Washington  University  and  an  M.B.A.  from  the  Simon  Business  School  at  the  University  of
Rochester. Mr. Varadan’s extensive executive leadership experience and his in-depth knowledge of the biopharmaceutical industry make him well qualified
to serve on the Board.

Corporate Governance

Pulmatrix, with the oversight of the Board and its committees, operates within a comprehensive plan of corporate governance for the purpose of defining
independence, assigning responsibilities, setting high standards of professional and personal conduct and assuring compliance with such responsibilities
and standards. We regularly monitor developments in the area of corporate governance.

Code of Corporate Conduct and Ethics and Whistleblower Policy

We have adopted a Code of Corporate Conduct and Ethics and Whistleblower Policy that applies to all of our associates, as well as each of our directors
and  certain  persons  performing  services  for  us.  The  Code  of  Corporate  Conduct  and  Ethics  and  Whistleblower  Policy  addresses,  among  other  things,
competition  and  fair  dealing,  conflicts  of  interest,  protection  and  proper  use  of  Company  assets,  government  relations,  compliance  with  laws,  rules  and
regulations  and  the  process  for  reporting  violations  of  the  Code  of  Corporate  Conduct  and  Ethics  and  Whistleblower  Policy,  employee  misconduct,
improper  conflicts  of  interest  or  other  violations.  Our  Code  of  Corporate  Conduct  and  Ethics  and  Whistleblower  Policy  is  available  on  our  website  at
www.pulmatrix.com in the “Corporate Governance” section found under the “Investors” tab. We intend to disclose any amendments to, or waivers from,
our Code of Corporate Conduct and Ethics and Whistleblower Policy at the same website address provided above.

Board Composition

Our  Amended  and  Restated  Certificate  of  Incorporation  and  our  Restated  Bylaws  (“Bylaws”)  provide  that  our  Board  will  consist  of  such  number  of
directors as determined from time to time by resolution adopted by our Board. Effective April 6, 2021, the size of our Board has been fixed at six directors.
Subject to any rights applicable to any then outstanding shares of preferred stock, any vacancies or newly created directorships resulting from an increase in
the authorized number of directors may be filled by a majority of the directors then in office. Our Board is classified into three classes, with the term of
office of one class expiring each year. The term of Class I directors expires at the 2024 Annual Meeting, the term of office of Class II directors expires at
the  Company’s  annual  meeting  of  stockholders  to  be  held  in  2025  and  the  term  of  Class  III  directors  expires  at  the  Company’s  annual  meeting  of
stockholders to be held in 2026. Stockholders vote to elect directors of the class with a term then expiring each year at our annual meeting.

We have no formal policy regarding Board diversity. Our Board believes that each director should have a basic understanding of the principal operational
and financial objectives and plans and strategies of the Company, our results of operations and financial condition and relative standing in relation to our
competitors. We take into consideration the overall composition and diversity of the Board and areas of expertise that director nominees may be able to
offer,  including  business  experience,  knowledge,  abilities  and  customer  relationships.  Generally,  we  will  strive  to  assemble  a  Board  that  brings  to  us  a
variety of perspectives and skills derived from business and professional experience as we may deem are in our and our stockholders’ best interests. In
doing so, we will also consider candidates with appropriate non-business backgrounds.

48

 
 
 
 
 
 
 
 
 
 
The table below provides additional diversity information regarding our directors. Each of the categories listed in the below table has the meaning as it is
used in Nasdaq Listing Rule 5605(f).

Board Diversity Matrix (as of March 25, 2024)

Total number of Directors:

Gender Identity:
Directors

Demographic Background:
African American or Black
Alaskan Native or Native American
Asian
Hispanic or LatinX
Native Hawaiian or Pacific Islander
White
Two or More Races or Ethnicities
LGBTQ+
Did Not Disclose Demographic Background

Director Independence

Non-Binary    

Did Not
Disclose
Gender
2

Female

Male
4

1
1

2

6

2

We are currently listed on the Nasdaq Capital Market and therefore rely on the definition of independence set forth in the Nasdaq Listing Rules (“Nasdaq
Rules”). Under the Nasdaq Rules, a director will only qualify as an “independent director” if, in the opinion of our Board, that person does not have a
relationship  that  would  interfere  with  the  exercise  of  independent  judgment  in  carrying  out  the  responsibilities  of  a  director.  Based  upon  information
requested from and provided by each director concerning his background, employment, and affiliations, including family relationships, we have determined
that Mr. Bazemore, Dr. Batycky, Dr. Cabell, Mr. Higgins, and Mr. Varadan have no material relationships with us that would interfere with the exercise of
independent judgment and are “independent directors” as that term is defined in the Nasdaq Rules.

Board Committees, Meetings and Attendance

During 2023, the Board held six meetings. We expect our directors to attend Board meetings, meetings of any committees and subcommittees on which
they serve, and each annual meeting of stockholders, either in person or by teleconference. During 2023, each director attended at least seventy-five percent
(75%) of the total number of meetings held by the Board and Board committees of which such director was a member. Five of our directors attended our
2023 annual meeting of stockholders.

The Board delegates various responsibilities and authority to different Board committees. Committees regularly report on their activities and actions to the
full  Board.  Currently,  the  Board  has  established  an  Audit  Committee,  a  Compensation  Committee  and  a  Nominating  and  Corporate  Governance
Committee. Committee assignments are re-evaluated annually. Each of these committees operates under a charter that has been approved by our Board. The
current charter of each of these committees is available on our website at www.pulmatrix.com in the “Corporate Governance” section under “Investors.” As
of the date of this report, the following table sets forth the membership of each of the Board committees listed above.

Name

Audit Committee

Compensation Committee

Nominating and Corporate
Governance Committee

Teofilo Raad
Richard Batycky, Ph.D.
Todd Bazemore
Christopher Cabell, M.D.
Michael J. Higgins*
Anand Varadan

* Chairman of the Board of Directors

Member
Member

Chairman

49

Chairman

Member

Member

Chairman
Member
Member

 
 
 
 
 
 
 
   
   
 
 
 
           
 
   
 
           
 
 
 
 
 
    
 
 
   
 
    
 
          
 
 
    
 
 
   
 
    
 
  
 
 
    
 
 
   
 
    
 
  
 
 
    
 
 
   
 
    
 
  
 
 
    
 
   
 
    
 
  
 
 
    
 
   
 
    
 
  
 
 
    
 
 
   
 
    
 
  
 
 
    
 
   
 
    
 
  
 
 
    
 
 
   
 
    
 
  
 
 
    
 
 
   
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Audit Committee

Our Audit Committee is responsible for, among other matters:

● approving and retaining the independent auditors to conduct the annual audit of our financial statements;
● reviewing the proposed scope and results of the audit;
● reviewing and pre-approving audit and non-audit fees and services;
● reviewing accounting and financial controls with the independent auditors and our financial and accounting staff;
● reviewing and approving transactions between us and our directors, officers and affiliates;
● recognizing and preventing prohibited non-audit services;
● establishing procedures for complaints received by us regarding accounting matters;
● overseeing internal audit functions, if any; and
● preparing the report of the audit committee that the rules of the SEC require to be included in our annual meeting proxy statement.

Our Audit  Committee  is  composed  of  Michael  J.  Higgins  (chairman),  Richard  Batycky,  Ph.D.  and  Todd  Bazemore.  Our  Board  has  determined  that  Mr.
Higgins, Dr. Batycky and Mr. Bazemore were independent in accordance with Nasdaq Rules and Rule 10A-3 under the Securities Exchange Act of 1934, as
amended (the “Exchange Act”). Our Board has also reviewed the education, experience and other qualifications of each member of the Audit Committee.
Based upon that review, our Board has determined that Michael J. Higgins qualifies as an “audit committee financial expert,” as defined by the rules of the
SEC. The Audit Committee met four times during 2023.

Compensation Committee

Our Compensation Committee is responsible for, among other matters:

● reviewing  and  recommending  the  compensation  arrangements  for  management,  including  the  compensation  for  our  president  and  chief

executive officer;

● appointing,  compensating  and  overseeing  the  work  of  any  compensation  consultant,  legal  counsel  or  other  advisor  retained  by  the

Compensation Committee;

● establishing  and  reviewing  general  compensation  policies  with  the  objective  to  attract  and  retain  superior  talent,  to  reward  individual

performance and to achieve our financial goals;

● administering our stock incentive plans; and
● preparing the report of the compensation committee to the extent that the rules of the SEC require such report to be included in our annual

meeting proxy statement.

Our  Compensation  Committee  is  composed  of  Richard  Batycky,  Ph.D.  (chairman),  Christopher  Cabell,  M.D.  and  Anand  Varadan.  Our  Board  has
determined  that  Dr.  Batycky,  Dr.  Cabell  and  Mr.  Varadan  were  independent  in  accordance  with  Nasdaq  Rules.  The  Compensation  Committee  has  the
authority to delegate to subcommittees of the Compensation Committee any of the responsibilities of the full committee. The Compensation Committee
met  two  times  during  2023.  The  Compensation  Committee  did  not  engage  its  own  compensation  consultant  but  did  consider  the  analyses  and
recommendations of a consultant engaged by management.

Nominating and Corporate Governance Committee

Our Nominating and Corporate Governance Committee is responsible for, among other matters:

● evaluating the current composition, organization and governance of the Board and its committees, and making recommendations for changes

thereto;

● reviewing each director and nominee annually;
● determining desired Board member skills and attributes and conducting searches for prospective members accordingly;
● evaluating nominees, and making recommendations to the Board concerning the appointment of directors to Board committees, the selection
of  Board  committee  chairs,  proposal  of  the  slate  of  directors  for  election  to  the  Board,  and  the  termination  of  membership  of  individual
directors in accordance with the Board’s governance principles;

● overseeing the process of succession planning for the chief executive officer and, as warranted, other senior officers of the Company;
● developing, adopting and overseeing the implementation of a code of business conduct and ethics; and
● administering the annual Board performance evaluation process.

Our Nominating and Corporate Governance Committee is composed of Todd Bazemore (chairman), Christopher Cabell, M.D. and Michael J. Higgins. The
Nominating and Corporate Governance Committee did not meet during 2023.

50

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Director Nominations

Our Nominating and Corporate Governance Committee considers all qualified candidates identified by members of the Board, by senior management and
by  stockholders.  The  Nominating  and  Corporate  Governance  Committee  follows  the  same  process  and  uses  the  same  criteria  for  evaluating  candidates
proposed by stockholders, members of the Board and members of senior management. We did not pay fees to any third party to assist in the process of
identifying or evaluating director candidates during 2023.

Our Bylaws contain provisions that address the process by which a stockholder may nominate an individual to stand for election to the Board at our Annual
Meeting.  To  recommend  a  nominee  for  election  to  the  Board,  a  stockholder  must  submit  his  or  her  recommendation  to  our  Secretary  at  our  corporate
offices at 36 Crosby Drive, Suite 100, Bedford, Massachusetts 01730. Such nomination must satisfy the notice, information and consent requirements set
forth in our Bylaws and must be received by us prior to the date set forth under “Submission of Future Stockholder Proposals” below. A stockholder’s
recommendation must be accompanied by the information with respect to stockholder nominees as specified in our Bylaws, including among other things,
the name, age, address and occupation of the recommended person, the proposing stockholder’s name and address, the ownership interests of the proposing
stockholder and any beneficial owner on whose behalf the nomination is being made (including the number of shares beneficially owned, any hedging,
derivative, short or other economic interests and any rights to vote any shares) and any material monetary or other relationships between the recommended
person and the proposing stockholder and/or the beneficial owners, if any, on whose behalf the nomination is being made.

In evaluating director nominees, the Nominating and Corporate Governance Committee considers the following factors:

● the appropriate size and diversity of our Board;
● our needs with respect to the particular knowledge, skills and experience of nominees, including experience in corporate finance, technology,
business, administration and sales, in light of the prevailing business conditions and the knowledge, skills and experience already possessed
by other members of the Board;

● experience with accounting rules and practices, and whether such a person qualifies as an “audit committee financial expert” pursuant to SEC

rules; and

● balancing continuity of our Board with periodic injection of fresh perspectives provided by new Board members.

Our Board believes that each director should have a basic understanding of our principal operational and financial objectives and plans and strategies, our
results of operations and financial condition and our relative standing in relation to our competitors.

In identifying director nominees, the Board will first evaluate the current members of the Board willing to continue in service. Current members of the
Board with skills and experience that are relevant to our business and who are willing to continue in service will be considered for re-nomination.

If  any  member  of  the  Board  does  not  wish  to  continue  in  service  or  if  the  Board  decides  not  to  re-nominate  a  member  for  re-election,  the  Board  will
identify another nominee with the desired skills and experience described above. The Board takes into consideration the overall composition and diversity
of  the  Board  and  areas  of  expertise  that  director  nominees  may  be  able  to  offer,  including  business  experience,  knowledge,  abilities  and  customer
relationships.  Generally,  the  Board  will  strive  to  assemble  a  Board  that  brings  to  us  a  variety  of  perspectives  and  skills  derived  from  business  and
professional experience as it may deem are in our and our stockholders’ best interests. In doing so, the Board will also consider candidates with appropriate
non-business backgrounds.

Board Leadership Structure and Role in Risk Oversight

The  positions  of  Chairman  of  the  Board  and  Principal  Executive  Officer  are  filled  by  two  separate  individuals.  Mr.  Higgins  currently  serves  as  our
Chairman  of  the  Board,  and  Mr.  Raad  currently  serves  as  our  Principal  Executive  Officer.  The  Board  acknowledges  that  there  are  different  leadership
structures that could allow it to effectively oversee the management of the risks relating to the Company’s operations and believes its current leadership
structure enables it to effectively provide oversight with respect to such risks. Our Audit Committee is primarily responsible for overseeing the Company’s
risk management processes on behalf of the full Board. The Audit Committee receives reports from management concerning the Company’s assessment of
risks. In addition, the Audit Committee reports regularly to the full Board, which also considers the Company’s risk profile. The Audit Committee and the
full Board focus on the most significant risks facing the Company and the Company’s general risk management strategy. In addition, as part of its oversight
of our Company’s executive compensation program, the Compensation Committee considers the impact of such program, and the incentives created by the
compensation awards that it administers, on our Company’s risk profile. In addition, the Compensation Committee reviews all of our compensation policies
and procedures, including the incentives that they create and factors that may reduce the likelihood of excessive risk taking, to determine whether they
present  a  significant  risk  to  our  Company.  The  Compensation  Committee  has  determined  that,  for  all  employees,  our  compensation  programs  do  not
encourage excessive risk and instead encourage behaviors that support sustainable value creation.

51

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Communications with Directors

The  Board  welcomes  communication  from  our  stockholders.  Stockholders  and  other  interested  parties  who  wish  to  communicate  with  a  member  or
members  of  our  Board  or  a  committee  thereof  may  do  so  by  addressing  correspondence  to  the  Board  member,  members  or  committee,  c/o  Secretary,
Pulmatrix,  Inc.,  36  Crosby  Drive,  Suite  100,  Bedford,  Massachusetts  01730.  Our  Secretary  will  review  and  forward  correspondence  to  the  appropriate
person or persons.

All  communications  received  as  set  forth  in  the  preceding  paragraph  will  be  opened  by  our  Secretary  for  the  sole  purpose  of  determining  whether  the
contents represent a message to our directors. Any contents that are not in the nature of advertising, promotions of a product or service or patently offensive
material will be forwarded promptly to the addressee(s). In the case of communications to the Board or any group or committee of directors, our Secretary
will make sufficient copies of the contents to send to each director who is a member of the group or committee to whom the communication is addressed. If
the  amount  of  correspondence  received  through  the  foregoing  process  becomes  excessive,  our  Board  may  consider  approving  a  process  for  review,
organization and screening of the correspondence by our Secretary or another appropriate person.

Family Relationships

There are no family relationships amongst our directors and executive officers, or person nominated or chosen by the Company to become a director or
executive officer.

Involvement in Certain Legal Proceedings

There have been no material legal proceedings that would require disclosure under the federal securities laws that are material to an evaluation of the ability
or  integrity  of  our  directors  or  executive  officers,  or  in  which  any  director,  officer,  nominee  or  principal  stockholder,  or  any  affiliate  thereof,  is  a  party
adverse to us or has a material interest adverse to us.

Insider Trading Policy and Anti-Hedging Policy

We maintain an insider trading policy that applies to our officers and directors that prohibits trading our securities during certain established periods and
when in possession of material non-public information. It also prohibits, unless approved in advance in limited circumstances by the policy administrator,
the hedging of our securities, including short sales or purchases or sales of derivative securities based on our securities, and the use of our securities to
secure a margin or other loan. Since the adoption of our insider trading policy, the policy administrator has not granted any such exemptions to the policy’s
general prohibition on hedging or pledging.

ITEM 11. EXECUTIVE COMPENSATION

Executive Summary

This  section  discusses  the  material  components  of  our  executive  compensation  program.  We  comply  with  the  executive  compensation  disclosure  rules
applicable  to  “smaller  reporting  companies,”  as  such  term  is  defined  in  the  rules  promulgated  under  the  Securities  Act,  which  require  compensation
disclosure for (i) our principal executive officer; (ii) the two most highly compensated executive officers other than our principal executive officer; and (iii)
up to two additional individuals for whom disclosure would have been provided pursuant to clause (ii) but for the fact that the individual was not serving as
an executive officer at the end of 2023. These current officers are referred to as our Named Executive Officers.

Summary Compensation Table

The  following  table  sets  forth  information  concerning  the  compensation  of  our  Named  Executive  Officers  for  the  years  ended  December  31,  2023  and
2022.

Name and Principal Position

Teofilo Raad
(Chief Executive Officer)
Peter Ludlum(8)
(Interim Chief Financial Officer)
Margaret Wasilewski, M.D.(9)
(Chief Medical Officer)
Michelle S. Siegert(7)
(Vice President, Finance)

  Year  
2023   
2022   
2023   
2022   
2023   
2022   
2023   
2022   

Salary
($)
  567,294   
  525,272   
-   
-   
  461,890   
  368,333   
-   
  299,700   

Option
Awards
($)(1)
  114,172   
  234,375   
-   
-   
  37,294   
  101,882   
-   
  57,594   

Bonus
($)

- 
- 
- 
- 
- 
- 
- 

  43,035(6) 

52

Non-Equity
Incentive Plan
Compensation
($)

All Other
Compensation
($)

-   
237,003   
-   
-   
-   
133,755   
-   
81,135   

10,422(2) 
10,422(3) 
510,224(4) 
398,583(4) 
10,422(2) 
10,085(5) 

- 

10,422(3) 

Total 
($)
691,888 
  1,007,072 
510,224 
398,583 
509,606 
614,055 
- 
491,886 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(1)

In accordance with SEC rules, this column reflects the aggregate fair value of the option awards granted during the respective fiscal year computed as
of their respective grant dates in accordance with Financial Accounting Standard Board Accounting Standards Codification Topic 718 for share-based
compensation transactions. The assumptions made in the valuation of the share-based payments are contained in Note 9 to our consolidated financial
statements for the fiscal year ended December 31, 2023 in our Annual Report on Form 10-K for the year ended December 31, 2023.

(2) Represents Company 401(k) plan contributions of $9,900 and payment made by the Company for life, AD&D and LTD premiums in the amount of

$522.

(3) Represents Company 401(k) plan contributions of $9,150, payment made by the Company for life, AD&D and LTD premiums in the amount of $522

and cell phone reimbursement of $750.

(4) The amount shown in the “All Other Compensation” column for Mr. Ludlum includes fees paid to Danforth Advisors, LLC on his behalf during the

years ended December 31, 2023 and 2022.

(5) Represents Company 401(k) plan contributions of $9,150, payment made by the Company for life, AD&D and LTD premiums in the amount of $435

and cell phone reimbursement of $500.

(6) Represents a retention bonus which was paid on March 31, 2022.
(7) As of April 18, 2022, Michelle S. Siegert no longer served as the Principal Accounting Officer and the Principal Financial Officer. Ms. Siegert was

terminated effective July 31, 2023.

(8) Peter Ludlum was appointed as our Interim Chief Financial Officer in April 2022.
(9) Margaret Wasilewski, M.D. was appointed as our Chief Medical Officer in March 2022. On March 7, 2024, the Board approved the termination of Dr.

Wasilewski.

Narrative Disclosure to Summary Compensation Table

Executive Employment Agreements

We have entered into executive employment agreements with each of our Named Executive Officers. The executive employment agreements provide for
“at will” employment and set forth the terms and conditions of employment, including annual base salary, discretionary bonus opportunities, benefits and
eligibility  to  participate  in  our  employee  benefit  plans  and  programs.  As  a  condition  of  their  employment,  our  Named  Executive  Officers  were  each
required to execute our standard proprietary information, inventions, and non-competition agreement. The material terms of these executive employment
agreements are summarized below.

Retirement Plans

As  part  of  our  overall  compensation  program,  we  provide  all  full-time  employees,  including  our  named  executive  officers,  with  the  opportunity  to
participate in a defined contribution 401(k) plan. Our 401(k) plan is intended to qualify under Section 401 of the Internal Revenue Code so that employee
pre-tax  contributions  and  income  earned  on  such  contributions  are  not  taxable  to  employees  until  withdrawn.  Employees  may  elect  to  defer  up  to  100
percent of their eligible compensation (not to exceed the statutorily prescribed annual limit) in the form of elective deferral contributions to our 401(k) plan.
Our  401(k)  plan  also  has  a  “catch-up  contribution”  feature  for  employees  aged  50  or  older  (including  those  who  qualify  as  “highly  compensated”
employees) who can defer amounts over the statutory limit that applies to all other employees.

Employee Benefits and Perquisites

During  their  employment,  Mr.  Raad,  Ms.  Siegert,  and  Dr.  Wasilewski  are  eligible  to  participate  in  our  health  and  welfare  plans,  including  medical  and
dental benefits, short-term and long-term disability insurance, and life insurance.

No Tax Gross-Ups

We  do  not  make  gross-up  payments  to  cover  our  executives’  personal  income  taxes  that  may  pertain  to  any  of  the  compensation  or  perquisites  paid  or
provided by us.

53

 
 
 
 
 
 
 
 
 
 
 
 
 
Mr. Raad

On May 16, 2019, the Board appointed Mr. Raad to serve as Chief Executive Officer and a Class II director. Prior to Mr. Raad’s appointment as the Chief
Executive Officer, Mr. Raad served as our Chief Business Officer pursuant to an employment agreement, dated April 28, 2017. On June 28, 2019, we and
Mr.  Raad  entered  into  an  amended  and  restated  employment  agreement  (the  “Raad  Agreement”),  with  Mr.  Raad  to  serve  as  our  President  and  Chief
Executive  Officer.  Mr.  Raad’s  employment  with  us  is  “at-will,”  and  the  Raad  Agreement  does  not  include  a  specified  term.  As  consideration  for  his
services  as  Chief  Executive  Officer,  the  Raad  Agreement  provided  that  Mr.  Raad  would  receive  (i)  an  annual  base  salary  of  $450,000  and  (ii)  a  target
annual cash bonus equal to 45% of his base salary. Both Mr. Raad’s salary and bonus are subject to review and adjustment by the Board or an appropriate
committee thereof. The actual bonus amount is based on both our and Mr. Raad’s individual performance during the year. Effective as of January 1, 2022,
after taking into consideration previous increases, Mr. Raad’s base salary was increased to $525,272 and the target annual cash bonus equaled 50% of the
base salary. Effective as of January 1, 2023, Mr. Raad’s base salary was increased to $567,294 and the target annual cash bonus remained at 50% of the
base salary. No incentive bonus was paid to Mr. Raad for the year ended December 31, 2023. Effective January 6, 2024, Mr. Raad was granted a Retention
Bonus (defined below) totaling $340,000 payable in two equal installments following each of the first two calendar quarters in 2024.

We initially agreed in the Raad Agreement to grant Mr. Raad an option to purchase 6,831 shares of our common stock, subject to the terms and conditions
of the Amended and Restated 2013 Employee, Director and Consultant Equity Incentive Plan (the “Incentive Plan”) and our standard form of stock option
agreement, as soon as practicable upon execution of the Raad Agreement. On January 9, 2020, after taking into consideration the results of a compensation
survey, the Compensation Committee of the Board made various compensation adjustments, which included a grant to Mr. Raad, in lieu of the option to
purchase 6,831 shares of our commons stock, of (i) an option to purchase 23,572 shares, of which 3,437 optioned shares were fully vested and exercisable
as of January 9, 2020, and the remaining optioned shares to vest and become exercisable in 41 equal monthly installments on the 16th day of each of the 41
calendar months following January 2020, and (ii) an option to purchase 39,089 shares of common stock, 1/48th of the optioned shares to vest and become
exercisable  on  each  of  the  48  monthly  anniversaries  of  January  9,  2020.  On  April  2,  2020,  Mr.  Raad  was  granted  an  option  to  purchase  499  shares  of
common stock, 1/48th of the optioned shares to vest and become exercisable on each of the 48 monthly anniversaries of April 2, 2020.

On  January  28,  2021,  Mr.  Raad  was  granted  an  option  to  purchase  28,274  shares  of  common  stock,  with  2.08333%  of  the  optioned  shares  to  vest  and
become exercisable on each of the 48 monthly anniversaries of grant date. On January 27, 2022, Mr. Raad was granted an option to purchase 37,500 shares
of common stock, with 2.08333% of the optioned shares to vest and become exercisable on each of the 48 monthly anniversaries of grant date. On January
26,  2023,  Mr.  Raad  was  granted  an  option  to  purchase  34,900  shares  of  common  stock,  with  2.08333%  of  the  optioned  shares  to  vest  and  become
exercisable on each of the 48 monthly anniversaries of grant date.

Termination Benefits

Pursuant to the Raad Agreement, if Mr. Raad’s employment is terminated (i) by us without Cause (as defined in the Raad Agreement) or (ii) by Mr. Raad
for  good  reason,  then  we  must  pay  Mr.  Raad,  in  addition  to  any  then-accrued  and  unpaid  obligations  owed  to  him,  (a)  twelve  (12)  months  of  his  then-
current base salary, (b) a pro-rated bonus in an amount equal to the target annual performance bonus to which Mr. Raad may have been entitled for the year
in which the termination occurs, (c) a separation bonus equal to one hundred percent (100%) of the target annual performance bonus to which Mr. Raad
may have been entitled for the year in which the termination occurs, and (d) up to twelve (12) months of COBRA health insurance premiums at our then-
normal rate of contribution. In addition, all unvested equity awards held by Mr. Raad that would have vested during the twelve (12) months following the
termination date will immediately vest and become exercisable. If Mr. Raad’s employment is terminated (i) by us without Cause or (ii) by Mr. Raad for
good  reason,  within  twelve  (12)  months  following  a  change  in  control,  then  Mr.  Raad  shall  be  entitled  to  receive,  in  addition  to  any  then-accrued  and
unpaid obligations owed to him, (a) a lump sum payment equal to eighteen (18) months of his then-current base salary, (b) a pro-rated bonus in an amount
equal to the target annual performance bonus to which Mr. Raad may have been entitled for the year in which the termination occurs, (c) a separation bonus
equal  to  one  hundred  percent  (100%)  of  the  target  annual  performance  bonus  to  which  Mr.  Raad  may  have  been  entitled  for  the  year  in  which  the
termination occurs, and (d) up to twelve (12) months of COBRA health insurance premiums at our then-normal rate of contribution. In addition, in that
case, all unvested equity awards will immediately vest and become exercisable. Receipt of Mr. Raad’s severance and other termination benefits is subject to
his execution of a release of claims and his compliance with the restrictive covenants contained in his agreements with the Company.

Under Mr. Raad’s employment agreement, “good reason” is defined as (i) relocation of Mr. Raad’s principal business location to a location more than fifty
(50) miles from his then-current business location; (ii) a material diminution in Mr. Raad’s duties, authority, responsibilities, or reporting lines in a manner
whereby Mr. Raad no longer reports to the Board; or (iii) a material reduction in Mr. Raad’s base salary; provided that (A) Mr. Raad provides the Company
with  written  notice  that  he  intends  to  terminate  his  employment  for  good  reason  within  thirty  (30)  days  of  such  circumstance  occurring,  (B)  if  such
circumstance is capable of being cured, we have failed to cure such circumstance within a period of thirty (30) days from the date of such written notice,
and (C) Mr. Raad terminates his employment within sixty five (65) days from the date that good reason first occurs.

54

 
 
 
 
 
 
 
 
 
 
Retention Bonus and Letter Agreement

On January 6, 2024, we and Mr. Raad entered into a letter agreement (the “Letter Agreement”), pursuant to which Mr. Raad shall be granted a retention
bonus of $170,000 per quarter, for each of the full calendar quarters ending March 31, 2024 and June 30, 2024, respectively, less applicable payroll and
other tax withholdings (such bonus, the “Retention Bonus”). Pursuant to the Letter Agreement, Mr. Raad must be employed by us on the last day of such
applicable calendar quarter unless Mr. Raad’s employment is terminated on the closing date of a potential acquisition of us by an unrelated third party,
merger by us with or into an unrelated third party or other liquidation event (such closing date, the “Retention Date”), in which case, Mr. Raad shall receive
the full Retention Bonus for the calendar quarter in which the Retention Date occurs.

Notwithstanding  the  foregoing,  if  Mr.  Raad’s  employment  with  us  is  terminated  by  us  without  Cause  prior  to  the  Retention  Date,  or  due  to  death  or
disability, then we shall pay to Mr. Raad the full Retention Bonus with respect to the calendar quarter of such termination, subject to the receipt of a release
of  claims  by  us  (the  “Release”).  We  shall  not  be  obligated  to  pay  the  Retention  Bonus  if  (i)  Mr.  Raad  terminates  his  employment  with  us  prior  to  the
Retention Date, (ii) we terminate Mr. Raad’s employment prior to the Retention Date for Cause, or (iii) Mr. Raad’s employment is terminated due to his
death, disability or by us without Cause, and a Release has not been received.

Mr. Ludlum

On April 14, 2022, we appointed Peter Ludlum as Interim Chief Financial Officer, effective as of April 18, 2022. Since December 2021, Mr. Ludlum has
served  as  a  consultant  with  Danforth  Advisors,  LLC  (“Danforth”),  a  provider  of  strategic  and  operational  finance  and  accounting  for  life  science
companies, and, since December 2021, Mr. Ludlum has served as our Strategic Advisor – Finance pursuant to a November 30, 2021 consulting agreement
(the “Consulting Agreement”) between the Company and Danforth.

Pursuant to the Consulting Agreement, Danforth will receive cash compensation at a rate of $400 per hour for Mr. Ludlum’s services. Each month we and
Danforth shall evaluate jointly the current fee structure and scope of Services. Danforth reserves the right to an annual increase in consultant rates of up to
4%, effective January 1 of each year. Upon termination of the Consulting Agreement, no compensation or benefits of any kind shall be payable or issuable
to Danforth after the effective date of such termination. In addition, we will reimburse Danforth for reasonable out-of-pocket business expenses, including
but  not  limited  to  travel  and  parking,  incurred  by  Danforth  in  performing  the  services,  upon  submission  by  Danforth  of  supporting  documentation
reasonably  acceptable  to  us.  Any  such  accrued  expenses  in  any  given  three  (3)  month  period  that  exceed  $1,000  shall  be  submitted  to  us  for  our  prior
written approval.

Pursuant to the Consulting Agreement, Mr. Ludlum will provide services to us under the Consulting Agreement as an independent contractor and employee
of Danforth. The term of the Consulting Agreement will continue until such time as either party has given notice of termination. The Consulting Agreement
may be terminated by either party hereto: (a) with cause (as defined in the Consulting Agreement) upon written notice to the other party; or (b) without
cause upon 30 days prior written notice to the other party.

Dr. Wasilewski

On  March  1,  2022,  we  appointed  Dr.  Wasilewski  to  serve  as  Chief  Medical  Officer.  Dr.  Wasilewski’s  employment  with  us  is  “at-will,”  pursuant  to  an
employment agreement (the “Wasilewski Agreement”). As consideration for her services as Chief Medical Officer, the Wasilewski Agreement provided
that  Dr.  Wasilewski  would  receive  (i)  an  annual  base  salary  of  $442,000  and  (ii)  a  target  annual  cash  bonus  equal  to  40%  of  her  base  salary.  Both  Dr.
Wasilewski’s salary and bonus are subject to review and adjustment by the Board or an appropriate committee thereof. The actual bonus amount is based
on both our and Dr. Wasilewski’s individual performance during the year.

Pursuant to the Wasilewski Agreement, we agreed to grant Dr. Wasilewski an option to purchase 21,060 shares of our common stock, subject to the terms
and conditions of the Incentive Plan and our standard form of stock option agreement, as soon as practicable upon execution of the Wasilewski Agreement.
Effective January 1, 2023, Dr. Wasilewski’s base salary was increased to $461,890 and the target annual cash bonus remained at 40% of the base salary. No
incentive  bonus  was  paid  to  Dr.  Wasilewski  for  the  year  ended  December  31,  2023.  On  March  7,  2024,  the  Board  approved  the  termination  of  Dr.
Wasilewski. Termination benefits to be provided to Dr. Wasilewski are described below.

55

 
 
 
 
 
 
 
 
 
 
 
 
 
Termination Benefits

Pursuant to the Wasilewski Agreement, if Dr. Wasilewski’s employment is terminated (i) by us other than cause or (ii) by Dr. Wasilewski for good reason,
then we must pay Dr. Wasilewski, in addition to any then-accrued and unpaid obligations owed to her, the following (i) severance in the amount equal to
six (6) months of her base salary, less all customary and required taxes and employment-related deductions, paid in equal installments commencing on the
first payroll date following the date on which the release of claims referenced above becomes effective and non-revocable, provided that, if the release
consideration period plus the revocation period spans two taxable years, payments will commence in the later taxable year; (ii) payment for any approved,
but unpaid bonus for the year immediately preceding the year her employment terminates, less all customary and required taxes and employment-related
deductions;  (iii)  payment  of  a  pro-rated  bonus  in  an  amount  equal  to  her  target  bonus  to  which  she  may  have  been  entitled  for  the  year  in  which  her
employment  terminates,  less  all  customary  and  required  taxes  and  employment-related  deductions;  (iv)  up  to  twelve  (12)  months  of  COBRA  health
insurance premiums at our then-normal rate of contribution. and (v) she shall become fully vested in any and all equity awards outstanding as of the date of
her termination.

In the event that a change of control occurs and within a period of one (1) year following the change of control, either her employment is terminated by us
other than for cause or she terminates her employment for good reason, in exchange for her execution and non-revocation of a release of claims, she shall
receive the payments and benefits set forth above, provided that the severance shall be for twelve (12) months (rather than six (6) months).

Ms. Siegert

Ms. Siegert was terminated effective July 31, 2023. Previously, on November 13, 2019, the Board had appointed Ms. Siegert to serve as Vice President,
Finance, and as our Principal Accounting Officer and the Principal Financial Officer, effective as of November 16, 2019. As of April 18, 2022, Ms. Siegert
no longer served as the Principal Accounting Officer and the Principal Financial Officer. Ms. Siegert’s employment with us was “at-will” with no specified
term, subject to an offer letter dated November 7, 2019 (the “Offer Letter”). As consideration for her services as Vice President, Finance, the Offer Letter
provided that Ms. Siegert would receive (i) an annual base salary of $240,000 and (ii) a target annual cash bonus equal to 25% of her base salary, to be
determined by the Chief Executive Officer at his or her sole discretion. Both Ms. Siegert’s salary and bonus are subject to review and adjustment by the
Board  or  an  appropriate  committee  thereof.  The  actual  bonus  amount  is  based  on  both  our  and  Ms.  Siegert’s  individual  performance  during  the  year.
Effective January 1, 2022, after taking into consideration previous increases, Ms. Siegert’s base salary was increased to $299,700 and the target annual cash
bonus equaled 30% of the base salary.

Outstanding Equity Awards at Fiscal Year-End

The following table sets forth information concerning the outstanding equity awards that have been previously awarded to each of our Named Executive
Officers and which remain outstanding as of December 31, 2023:

Name

Teofilo Raad

Margaret Wasilewski, M.D.

Number of securities
underlying unexercised
options (#) exercisable  
1,651 
3,704 
15,999 
23,572 
38,269(1) 
458(1) 
20,615(1) 
18,749(1) 
8,724(1) 
9,213(2) 
2,850(1) 

Number of securities
underlying unexercised
options (#)
unexercisable

Option exercise price
($)

—   
—   
—   
—   
820   
41   
7,659   
18,751   
26,176   
11,847   
8,550   

540.00   
93.60   
21.20   
30.80   
30.80   
25.60   
29.40   
7.41   
3.99   
5.72   
3.99   

  Option expiration date
05/01/2027
06/05/2028
05/16/2029
01/09/2030
01/09/2030
04/02/2030
01/28/2031
01/27/2032
01/26/2033
03/01/2032
01/26/2033

(1) Each of these options vests over a four (4) year period, with 2.08333% vesting on each monthly anniversary subsequent to the date of grant for a total

of forty-eight (48) months.

(2) This option award vests over a four (4) year period, with 25% vesting on the first anniversary and 2.08333% vesting on the last day of each  of  the

subsequent thirty-six 36 months.

56

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Compensation Recovery Policy

In  November  2023,  our  board  of  directors  approved  a  Compensation  Recovery  Policy,  which  states  that  in  the  event  we  are  required  to  prepare  an
accounting restatement, then we are directed, to the fullest extent permitted by governing law, to recover from each executive officer the amount, if any, of
previously awarded compensation that has been determined to be erroneously awarded. This policy applies to incentive-based compensation received by
executive officers on or after October 2, 2023.

Director Compensation

We have entered into a director’s agreement with each of our non-employee directors. In 2023, under these agreements, non-employee directors were paid
cash compensation payable in four quarterly payments as set forth in the table below.

Board of Directors:
Members
Chairperson
Audit Committee:
Members
Chairperson
Compensation Committee:
Members
Chairperson
Nominating and Corporate Governance Committee:
Members
Chairperson

Annual Retainer
Non-Employee
Directors

  $
  $

  $
  $

  $
  $

  $
  $

35,000 
65,000 

7,500 
15,000 

5,000 
11,500 

5,000 
10,000 

The agreements also provide that such directors will be reimbursed for reasonable out-of-pocket expenses incurred in connection with the attendance of
board and committee meetings.

Director Compensation Table

The following table presents the total compensation for each person who served as a member of our Board during 2023. Other than as set forth in the table
and described more fully below, we did not pay any compensation, reimburse any expense of, make any equity awards or non-equity awards to, or pay any
other compensation to any of the other members of our Board in such period. Mr. Raad receives no additional compensation for his service as a director,
and, consequently, is not included in this table. The compensation received by Mr. Raad as our President and Chief Executive Officer for 2023 is set forth
in the “Summary Compensation Table” under the section “Executive Compensation”.

Name
Richard Batycky, Ph.D.
Todd Bazemore
Christopher Cabell, M.D.
Michael J. Higgins
Anand Varadan

Fees earned
or paid in cash
($)

Option 
awards (1)(2)
($)

54,000   
52,500   
45,000   
85,000   
40,000   

5,561   
5,561   
5,561   
7,969   
5,561   

Total 
($)

59,561 
58,061 
50,561 
92,969 
45,561 

(1)

(2)

In accordance with SEC rules, this column reflects the aggregate fair value of option awards granted during the fiscal year ended December 31,
2023, computed as of their respective grant dates in accordance with Financial Accounting Standard Board Accounting Standards Codification
Topic 718 for share-based compensation transactions. The assumptions made in the valuation of the share-based payments are contained in Note 9
to our consolidated financial statements, found elsewhere in this report.
As of December 31, 2023, our non-employee directors held the following aggregate number of options to purchase shares of our common stock:
Dr. Batycky, 5,555 options; Mr. Bazemore, 5,055 options; Dr. Cabell, 5,055 options; Mr. Higgins, 9,151 options; and Mr. Varadan, 4,305 options.

57

 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ITEM 12.

SECURITY  OWNERSHIP  OF  CERTAIN  BENEFICIAL  OWNERS  AND  MANAGEMENT  AND  RELATED  STOCKHOLDER
MATTERS

The following table sets forth information regarding the beneficial ownership of our common stock as of March 25, 2024 by (i) each person known to us to
beneficially own five percent (5%) or more of our common stock, (ii) each director and Named Executive Officer (as defined below) and (iii) all of our
directors and executive officers as a group. The persons named in the table have sole voting and investment power with respect to all shares of common
stock owned by them and have an address of c/o Pulmatrix Inc., 36 Crosby Drive, Suite 100, Bedford, MA 01730, unless otherwise noted. Percentage of
ownership is based on 3,652,285 shares of common stock issued and outstanding as of March 25, 2024.

Beneficial ownership is determined in accordance with the rules of the SEC. For the purpose of calculating the number of shares beneficially owned by a
stockholder  and  the  percentage  ownership  of  that  stockholder,  shares  of  common  stock  subject  to  options  or  warrants  that  are  currently  exercisable  or
exercisable within sixty (60) days of March 25, 2024 by that stockholder are deemed outstanding.

Name

Named Executive Officers and Directors
Richard Batycky, Ph.D.
Todd Bazemore
Christopher Cabell M.D.
Michael J. Higgins
Anand Varadan
Teofilo Raad
Peter Ludlum
Margaret Wasilewski, M.D.
All directors and executive officers as a group of
eight persons
5% Stockholders
Sabby Volatility Warrant Master Fund, Ltd(2)
c/o Ogier Fiduciary Services (Cayman) Limited
89 Nexus Way, Camana Bay, Grand Cayman KY1-
9007 Cayman Islands

Number of
Shares
Beneficially
Owned

Percentage of
Shares
outstanding(1) 

Beneficially
Owned as a
result of stock

Beneficially
Owned as a
result of stock
option

ownership    

ownership    

Beneficially
Owned as a
result of
warrant
ownership  

3,852   
3,141   
3,265   
6,531   
2,247   
140,988   
-   
14,767   

174,791   

* 
* 
* 
* 
* 
3.72% 
* 
* 

4.57% 

25   
-   
-   
-   
-   
-   
-   
-   

25   

3,827   
3,141   
3,265   
6,531   
2,247   
140,988   
-   
14,767   

174,766   

182,249   

4.99% 

182,249   

-   

- 
- 
- 
- 
- 
- 
- 
- 

- 

- 

Less than 1%.

*
(1) Beneficial ownership as reported in the above table has been determined in accordance with Rule 13d-3 promulgated under the Exchange Act and is
not  necessarily  indicative  of  beneficial  ownership  for  any  other  purpose.  The  number  of  shares  of  common  stock  shown  as  beneficially  owned in
column one includes shares of common stock issuable upon the exercise of stock options and warrants that are currently exercisable or will become
exercisable within sixty (60) days of March 25, 2024.

(2) This information is based on the information reported on the Schedule 13G filed on January 2, 2024 by Sabby Volatility Warrant Master Fund, Ltd.,
Sabby Management, LLC, and Hal Mintz, and other information available to the Company. Sabby Volatility Warrant Master Fund, Ltd (“Sabby”) is the
beneficial owner of 182,249 shares of common stock. As of March 25, 2024, Sabby owns warrants that would be exercisable up to 248,409 additional
shares  of  common  stock,  except  for  a  limitation  set  forth  in  the  warrant  agreements  that  restricts  Sabby’s  ability  to  exercise  the  warrants  if  such
exercise would result in Sabby Volatility Warrant Master Fund, Ltd owning more than 4.99% of the Company’s currently outstanding number of shares
of common stock. The principal address of Sabby is 89 Nexus Way, Camana Bay, Grand Cayman KY1-9007 Cayman Islands.

Equity Compensation Plan Information

The  following  table  provides  information  regarding  the  number  of  securities  to  be  issued  under  the  Incentive  Plan,  the  2013  Employee,  Director  and
Consultant Equity Incentive Plan (the “Original 2013 Plan”) and the 2003 Employee, Director, and Consultant Stock Plan (the “2003 Plan”), the weighted-
average exercise price of options issued under the Incentive Plan, Original 2013 Plan and the 2003 Plan, and the number of securities remaining available
for future issuance under the Incentive Plan, the Original 2013 Plan and the 2003 Plan, in each case as of December 31, 2023:

58

 
 
 
 
 
   
 
 
 
    
 
  
 
 
    
 
    
 
       
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
    
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
Plan category

Equity compensation plans approved by security holders(1)
Equity compensation plans not approved by security holders(2)

Total

Number of securities
to be issued upon
exercise of
outstanding options,
warrants and rights  
344,306   
—   

Weighted-average
exercise price of
outstanding options,
warrants and rights  
20.92   
$
—   

344,306   

$

20.92   

Number of securities
remaining available
for future issuance
under equity
compensation
plans(3)

288,186 
— 

288,186 

(1) Represents shares available for issuance under the Incentive Plan.
(2) Excludes 8 shares of our common stock issuable upon outstanding options granted under equity compensation plans granted under the Original 2013
Plan. No additional awards may be issued under the Original 2013 Plan nor the 2003 Plan. As of December 31, 2023, there were 8 options with a
weighted average exercise price of $3.40 per share outstanding pursuant to the Original 2013 Plan and no options outstanding pursuant to the 2003
Plan.

(3) The number of authorized shares under the Incentive Plan is subject to annual increases based upon an “evergreen” provision, which allows for an
annual increase in the number of shares of our common stock available for issuance under the plan on the first day of each fiscal year. Pursuant to the
“evergreen” provision currently in effect, the annual increase in the number of shares shall be equal to five percent (5%) of the number of shares of our
common stock outstanding as of such date.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE

Transactions  with  related  persons  are  governed  by  our  Code  of  Corporate  Conduct  and  Ethics  and  Whistleblower  Policy,  which  applies  to  all  of  our
associates, as well as each of our directors and certain persons performing services for us. This code covers a wide range of potential activities, including,
among  others,  conflicts  of  interest,  self-dealing  and  related  party  transactions.  Waiver  of  the  policies  set  forth  in  this  code  will  only  be  permitted  when
circumstances warrant. Such waivers for directors and executive officers, or that provide a benefit to a director or executive officer, may be made only by
our  Board,  as  a  whole,  or  the  Audit  Committee  and  must  be  promptly  disclosed  as  required  by  applicable  law  or  regulation.  Absent  such  a  review  and
approval  process  in  conformity  with  the  applicable  guidelines  relating  to  the  particular  transaction  under  consideration,  such  arrangements  are  not
permitted. All related party transactions for which disclosure is required to be provided herein were approved in accordance with our Code of Corporate
Conduct and Ethics and Whistleblower Policy.

Since January 1, 2022, there were no transactions nor proposed transactions with related persons outside the normal course of business in which any related
person has or will have a direct or indirect material interest involving an amount that exceeds the lesser of $120,000 or one percent (1%) of the average of
the  Company’s  total  assets  as  of  the  end  of  last  two  completed  fiscal  years.  A  related  person  is  any  executive  officer,  director,  nominee  for  director,  or
holder of 5% or more of the Company’s common stock, or an immediate family member of any of those persons.

ITEM 14.

PRINCIPAL ACCOUNTANT FEES AND SERVICES

Fees to Independent Registered Public Accounting Firm

The following is a summary of the fees billed to us by Marcum LLP for professional services rendered in the years ended December 31, 2023 and 2022:

Audit Fees
Audit-Related Fees
Tax Fees
All Other Fees
Total Fees

  $

  $

2023

2022

272,926   $
—   
—   
—   
272,926   $

238,885 
— 
— 
— 
238,885 

Audit Fees. This category includes the audit of our annual consolidated financial statements, reviews of our interim financial statements included in our
Form 10-Qs and services that are normally provided by our independent registered public accounting firm in connection with its engagements for those
years.  This  category  also  includes  advice  on  audit  and  accounting  matters  that  arose  during,  or  as  a  result  of,  the  audit  or  the  review  of  our  unaudited
interim financial statements.

59

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Audit-Related Fees.  This  category  consists  of  assurance  and  related  services  by  our  independent  registered  public  accounting  firm  that  are  reasonably
related  to  the  performance  of  the  audit  or  review  of  our  financial  statements  and  are  not  reported  above  under  “Audit  Fees.” The  services  for  the  fees
disclosed under this category include consents regarding equity issuances.

Tax Fees. This category typically consists of professional services rendered by our independent registered public accounting firm for tax compliance and
tax advice.

All Other Fees. This category includes aggregate fees billed in each of the last two fiscal years for products and services provided by the Marcum LLP,
other than the services reported in the categories above.

Pre-Approval Policies and Procedures

Under  the  Audit  Committee’s  pre-approval  policies  and  procedures,  the  Audit  Committee  is  required  to  pre-approve  the  audit  and  non-audit  services
performed  by  our  independent  registered  public  accounting  firm.  On  an  annual  basis,  the  Audit  Committee  pre-approves  a  list  of  services  that  may  be
provided by the independent registered public accounting firm without obtaining specific pre-approval from the Audit Committee. In addition, the Audit
Committee sets pre-approved fee levels for each of the listed services. Any type of service that is not included on the list of pre-approved services must be
specifically approved by the Audit Committee or its designee. Any proposed service that is included on the list of pre-approved services but will cause the
pre-approved fee level to be exceeded will also require specific pre-approval by the Audit Committee or its designee.

The  Audit  Committee  has  delegated  pre-approval  authority  to  the  Audit  Committee  chairman  and  any  pre-approved  actions  by  the  Audit  Committee
chairman as designee are reported to the Audit Committee for approval at its next scheduled meeting.

All of the services rendered by Marcum LLP in 2023 were pre-approved by the Audit Committee.

60

 
 
 
 
 
 
 
 
 
ITEM 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES.

(a)

The following documents are filed as part of this Annual Report on Form 10-K:

(1) Consolidated Financial Statements:

PART IV

Report of Independent Registered Public Accounting Firm (PCAOB ID: 688)
Consolidated Balance Sheets as of December 31, 2023 and 2022
Consolidated Statements of Operations for the Years Ended December 31, 2023 and 2022
Consolidated Statements of Stockholders’ Equity for the Years Ended December 31, 2023 and 2022
Consolidated Statements of Cash Flows for the Years Ended December 31, 2023 and 2022
Notes to Consolidated Financial Statements

(2) Financial Statement Schedules:

F-2
F-3
F-4
F-5
F-6
F-7

None.  Financial  statement  schedules  have  not  been  included  because  they  are  not  applicable,  or  the  information  is  included  in  the
consolidated financial statements or notes thereto.

(3) Exhibits:

See “Index to Exhibits” for a description of our exhibits.

ITEM 16.

FORM 10-K SUMMARY

Not applicable.

61

 
 
 
 
 
 
 
 
 
 
 
 
 
 
INDEX TO EXHIBITS

Exhibit
Number

Exhibit Description

  At  the  Market  Offering  Agreement,  dated  May  26,  2021,  by  and  between

Pulmatrix, Inc. and H.C. Wainwright & Co., LLC

  Amended and Restated Certificate of Incorporation of Pulmatrix, Inc., as amended

through June 15, 2015

  Restated Bylaws of Pulmatrix, Inc., as amended through June 15, 2015

  Certificate of Amendment to Amended and Restated Certificate of Incorporation of

Pulmatrix, Inc., dated as of June 5, 2018

  Form of Certificate of Designation of Preferences, Rights and Limitations of Series

A Convertible Preferred Stock.

  Certificate of Correction to the Certificate of Designation, filed December 16, 2021  

  Certificate of Amendment to Amended and Restated Certificate of Incorporation of

Pulmatrix, Inc., dated as of February 5, 2019

  Certificate of Amendment to Amended and Restated Certificate of Incorporation of

Pulmatrix, Inc., dated as of February 28, 2022

  Amendment to the Restated Bylaws of Pulmatrix Inc., dated as of April 28, 2022

  Form of Specimen Stock Certificate

  Form of Representative’s Warrant Agreement

Filed
with
this
Report  

Incorporated
by Reference
herein from
Form

or Schedule   Filing Date  

SEC
File/Reg.
Number

  Form S-3

(Exhibit 1.2)

  Form 10-Q 
(Exhibit 3.1)

  Form 10-Q 
(Exhibit 3.2)

  Form 8-K 

(Exhibit 3.1)

  Form 8-K/A
(Exhibit 3.1)

  Form 8-K/A
(Exhibit 3.2)

  Form 8-K

(Exhibit 3.1)

  Form 10-K

(Exhibit 3.7)

  Form 8-K

(Exhibit 3.1)

  Form 8-K 

(Exhibit 4.1)

  Form S-1/A
(Exhibit 4.2)

05/26/21   333-256502

08/14/15   001-36199

08/14/15   001-36199

06/07/18   001-36199

12/17/21   001-36199

12/17/21   001-36199

02/06/19   001-36199

03/29/22   001-36199

04/29/22   001-36199

06/16/15   001-36199

02/24/14   333-190476

  Warrant  Agreement,  dated  June  16,  2015,  by  and  between  Pulmatrix,  Inc.  and

  Form 8-K

06/16/15   001-36199

Hercules Technology Growth Capital, Inc.

(Exhibit 10.3)

  Form of Warrant issued in Pulmatrix Operating Private Placement, dated June 15,

  Form 10-Q 

08/14/15   001-36199

2015

  Form  of  Series  B  Warrant  issued  in  Pulmatrix  Public  Offering,  dated  March  28,

2018

  Form of Pre-Funded Warrant issued in Pulmatrix Public Offering, dated March 28,

2018

  Form of Pre-Funded Warrant issued in Pulmatrix Public Offering, dated December

3, 2018

(Exhibit 10.8)

  Form S-1/A
(Exhibit 4.8)

  Form S-1/A
(Exhibit 4.7)

  Form 8-K 

(Exhibit 4.1)

03/28/18   333-223630

03/28/18   333-223630

12/03/18   001-36199

62

1.1

3.1

3.2

3.3

3.4

3.5

3.6

3.7

3.8

4.1

4.2

4.3

4.4

4.5

4.6

4.7

 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
   
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
4.8

  Form  of  Common  Warrant  issued  in  Pulmatrix  Public  Offering,  dated  December  3,

2018

4.9

  Form of Underwriter Warrant issued in Pulmatrix Public Offering, dated January 31,

2019

4.10

  Form of Underwriter Warrant issued in Pulmatrix Public Offering, dated February 4,

2019

4.11

  Form  of  Common  Warrant  issued  in  Pulmatrix  Direct  Registered  Offering,  dated

February 12, 2019

4.12

  Form  of  Placement  Agent  Warrant  issued  in  Pulmatrix  Registered  Direct  Offering,

dated February 12, 2019

12/03/18   001-36199

1/30/19

  001-36199

02/01/19   001-36199

02/11/19   001-36199

02/11/19   001-36199

  Form 8-K
(Exhibit
4.2)

  Form 8-K 
(Exhibit
4.1)

  Form 8-K 
(Exhibit
4.1)

  Form 8-K
(Exhibit
4.1)

  Form 8-K 
(Exhibit
4.2)

4.13

  Form of Common Stock Warrant issued in Pulmatrix Public Offering, dated April 1,

  Form S-

04/01/19   333-230395

2019

1/A
(Exhibit
4.13)

4.14

  Form of Pre-Funded Warrant issued in Pulmatrix Public Offering, dated April 1, 2019  

  Form S-

04/01/19   333-230395

1/A
(Exhibit
4.11)

4.15

  Form of Underwriter Warrant issued in Pulmatrix Public Offering, dated April 1, 2019  

  Form S-

04/01/19   333-230395

4,16

  Form of Common Warrant issued in Pulmatrix Public Offering, dated April 16, 2020  

4.17

  Form of Placement Agent Warrant issued in Pulmatrix Public Offering dated April 16,

2020

4.18

  Form of Warrant Dated July 9, 2020

4.19

  Form of Common Stock Purchase Warrant, dated December 17, 2021

4.20

  Form of Placement Agent Warrant dated December 17, 2021

4.21

  Description of Securities

4.22

  Form of Placement Agent Warrant dated February 16, 2021

10.1*

  Pulmatrix, Inc. Amended and Restated 2013 Employee, Director and Consultant

Equity Incentive Plan

10.2*

  Pulmatrix, Inc. 2013 Employee, Director and Consultant Equity Incentive Plan

10.3*

  Pulmatrix Inc. 2003 Employee, Director and Consultant Stock Plan

1/A
(Exhibit
4.12)

  Form 8-K
(Exhibit
4.1)

  Form 8-K
(Exhibit
4.1)

  Form 8-K
(Exhibit
4.1)

  Form 8-K
(Exhibit
4.1)

  Form 8-K
(Exhibit
4.2)

  Form 10-K
(Exhibit
4.21)

  Form 8-K
(Exhibit
4.1)

  Form 8-K
(Exhibit
10.6)

  Form S-8 
(Exhibit
99.2)

  Form S-8
(Exhibit
99.3)

04/16/20   001-36199

04/20/20   001-36199

07/09/20   001-36199

12/15/21   001-36199

12/15/21   001-36199

03/29/22   001-36199

02/16/21   001-36199

06/16/15   001-36199

07/20/15   333-205752

07/20/15   333-205752

 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
   
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
10.4

  License,  Development  and  Commercialization  Agreement,  dated  June  9,  2017,  by  and

between Pulmatrix, Inc. and Respivert Ltd.

08/04/17   001-36199

  Form
10-Q 
(Exhibit
10.1)

10.5

  First Amendment to the Pulmatrix, Inc. Amended and Restated 2013 Employee, Director

  Form 8-

06/07/18   001-36199

and Consultant Equity Incentive Plan, dated as of June 5, 2018

K
(Exhibit
10.1)

63

 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
10.6*

  Amended  and  Restated  Employment  Agreement,  dated  June  28,  2019,  by  and  between

  Form

06/28/19   001-36199

the Company and Teofilo Raad

10.7

  Development  and  Commercialization  Agreement,  dated  as  of  April  15,  2019,  by  and

between Cipla Technologies, LLC and Pulmatrix, Inc.

10.8*

  Second  Amendment  to  the  Pulmatrix,  Inc.  Amended  and  Restated  2013  Employee,

Director and Consultant Equity Incentive Plan, dated March 11, 2019

10-K/A
(Exhibit
10.1)

  Form
10-Q
(Exhibit
10.4)

  Form
S-8 
(Exhibit
99.3)

08/05/19   001-36199

06/04/19   333-231935

10.9*

  Third  Amendment  to  the  Pulmatrix,  Inc.  Amended  and  Restated  2013  Employee,

  Form 8-

09/09/19   001-36199

Director and Consultant Equity Incentive Plan, dated as of September 6, 2019

10.10**

  License,  Development  and  Commercialization  Agreement,  by  and  between  Pulmatrix,
Inc. and Johnson & Johnson Enterprise Innovation, Inc., dated as of December 26, 2019

K
(Exhibit
10.1)

  Form
10-K
(Exhibit
10.13)

03/26/20   001-36199

10.11

  Securities Purchase Agreement

  Form 8-

04/16/20   001-36199

K
(Exhibit
10.1)

10.12

  Form of Letter Agreement

  Form 8-

07/09/20   001-36199

K
(Exhibit
10.1)

10.13

  Form  of  Securities  Purchase  Agreement  dated  December  15,  2021,  by  and  between

  Form 8-

12/15/21   001-36199

Pulmatrix, Inc. and the purchaser parties thereto

K
(Exhibit
10.1)

10.14**

  Second  Amendment  to  Development  and  Commercialization  Agreement,  dated  as  of

  Form 8-

11/09/21   001-36199

November 8, 2021, by and between Cipla Technologies, LLC and Pulmatrix, Inc.

K
(Exhibit
10.1)

10.15

  Form  of  Securities  Purchase  Agreement  dated  February  11,  2021,  by  and  between

  Form 8-

02/16/21   001-36199

Pulmatrix, Inc. and the purchaser parties thereto

K
(Exhibit
10.1)

10.16*

  Consulting  Agreement,  dated  November  30,  2021,  by  and  between  Pulmatrix,  Inc.  and

  Form 8-

04/14/22   001-36199

Danforth Advisors, LLC

K
(Exhibit
10.1)

10.17***

  Third Amendment to the Development and Commercialization Agreement, dated as of

  Form 8-

01/08/24   001-36199

January 6, 2024, by and among Pulmatrix, Inc., Pulmatrix Operating Company, Inc., and
Cipla Technologies LLC.

K
(Exhibit
10.1)

10.18*

  Letter Agreement, dated January 6, 2024, by and between Teofilo Raad and the Company 

  Form 8-

01/08/24   001-36199

21.1

  List of Subsidiaries

K
(Exhibit
10.2)

  Form
10-K 
(Exhibit
21.1)

03/13/18   001-36199

23.1

  Consent of Marcum LLP, independent registered public accounting firm, to the Form 10-

X    

K

 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
   
   
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
 
31.1

  Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley

X    

Act of 2002

31.2

  Certification of Principal Financial Officer pursuant to Section 302 of the Sarbanes-

X    

Oxley Act of 2002

64

 
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
 
 
 
 
32.1

  Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as

adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

32.2

  Certification of Principal Financial Officer pursuant to 18 U.S.C. Section 1350, as

adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

97.01

  Compensation Recovery Policy

101. INS

  Inline XBRL Instance Document

101.SCH

  Inline XBRL Taxonomy Extension Schema Document

101.CAL

  Inline XBRL Taxonomy Extension Calculation Linkbase Document

101.DEF

  Inline XBRL Taxonomy Extension Definition Linkbase Document

101.LAB

  Inline XBRL Taxonomy Extension Labels Linkbase Document

101.PRE

  Inline XBRL Taxonomy Extension Presentation Linkbase Document

104

  Cover Page Interactive Data File (formatted as inline XBRL and contained in

Exhibit 101)

X
(furnished
herewith)

X
(furnished
herewith)

X

X

X

X

X

X

X

*
**

***

These exhibits are management contracts or compensatory plans or arrangements.
Portions of  this  exhibit  have  been  omitted  pursuant  to  Item  601(b)(10)(iv)  of  Regulation  S-K  under  the  Securities  Act  of  1933,  as  amended,
because they are both (i) not material and (ii) the type that the registrant treats as private or confidential. A copy of the omitted portions will be
furnished to the SEC upon its request.
Certain of the schedules (and similar attachments) to this exhibit have been omitted in accordance with Item 601(a)(5) of Regulation S-K under
the  Securities  Act  because  they  do  not  contain  information  material  to  an  investment  or  voting  decision  and  that  information  is  not  otherwise
disclosed in the exhibit or the disclosure document. The registrant hereby agrees to furnish a copy of all omitted schedules (or similar attachments)
to the Securities and Exchange Commission upon its request.

65

 
 
 
   
 
 
 
 
 
   
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
   
 
 
 
 
 
   
 
 
 
 
 
   
 
 
   
 
 
 
 
 
 
   
 
 
 
 
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed

on its behalf by the undersigned, thereunto duly authorized.

SIGNATURES

Date: March 28, 2024

PULMATRIX, INC.

By: /s/ Teofilo Raad
Teofilo Raad
Chief Executive Officer and President

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the

registrant and in the capacities indicated below and on the dates indicated.

Signature

Title

/s/ Teofilo Raad
Teofilo Raad

/s/ Peter Ludlum
Peter Ludlum

/s/ Michael J. Higgins
Michael J. Higgins

/s/ Richard Batycky, Ph.D.
Richard Batycky, Ph.D.

/s/ Todd Bazemore
Todd Bazemore

/s/ Christopher Cabell, M.D.
Christopher Cabell, M.D.

/s/ Anand Varadan
Anand Varadan

  Chief Executive Officer, President and Director

(Principal Executive Officer)

Interim Chief Financial Officer
(Principal Financial and Accounting Officer)

  Chairman of the Board of Directors

  Director

  Director

  Director

  Director

66

Date

March 28, 2024

March 28, 2024

March 28, 2024

March 28, 2024

March 28, 2024

March 28, 2024

March 28, 2024

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PULMATRIX, INC.

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Report of Independent Registered Public Accounting Firm (PCAOB ID: 688)
Consolidated Balance Sheets as of December 31, 2023 and 2022
Consolidated Statements of Operations for the Years Ended December 31, 2023 and 2022
Consolidated Statements of Stockholders’ Equity for the Years Ended December 31, 2023 and 2022
Consolidated Statements of Cash Flows for the Years Ended December 31, 2023 and 2022
Notes to Consolidated Financial Statements

F-1

Page
F-2
F-3
F-4
F-5
F-6
F-7

 
 
 
 
 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Stockholders and Board of Directors of
Pulmatrix, Inc.

Opinion on the Financial Statements

We  have  audited  the  accompanying  consolidated  balance  sheets  of  Pulmatrix,  Inc.  (the  “Company”)  as  of  December  31,  2023  and  2022,  the  related
consolidated statements of operations, stockholders’ equity and cash flows for each of the two years in the period ended December 31, 2023 and the related
notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial
position of the Company as of December 31, 2023 and 2022 and the results of its operations and its cash flows for each of the two years in the period ended
December 31, 2023 in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial
statements  based  on  our  audits.  We  are  a  public  accounting  firm  registered  with  the  Public  Company  Accounting  Oversight  Board  (United  States)
(“PCAOB”) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules
and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable
assurance about whether the 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  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  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 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  financial  statements  that  were  communicated  or
required  to  be  communicated  to  the  audit  committee  and  that:  (1)  relate  to  accounts  or  disclosures  that  are  material  to  the  financial  statements  and  (2)
involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion
on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing separate opinions on the critical
audit matter or on the accounts or disclosures to which it relates.

Revenue Recognition – Estimated Total Contract Costs

Description of the Matter

As described in Note 2 and Note 6 to the financial statements the Company recognizes revenue from non-refundable, upfront fees allocated to a license,
when  such  license  is  transferred  to  the  customer  through  collaboration  arrangements  and  the  customer  is  able  to  use  and  benefit  from  the  license.  For
licenses that are combined with other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine
whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for
purposes of recognizing revenue. The Company uses the input method, with estimated costs to satisfy the performance obligation being the input, as the
best measure of the transfer of control of the performance obligation.

Management uses significant assumptions and estimates when determining the total estimated costs expected upon satisfying the performance obligation,
which in turn led to significant auditor judgment, subjectivity and effort in performing procedures to evaluate the total estimate of the costs expected upon
satisfying the performance obligation.

How We Addressed the Matter in Our Audit

Addressing  the  matter  involved  performing  procedures  and  evaluating  audit  evidence  in  connection  with  forming  our  overall  opinion  on  the  financial
statements.  These  procedures  included,  among  others,  (i)  obtaining  an  understanding  of  management’s  process  in  developing  the  cost  estimates  (ii)
discussion with the Company’s clinical and manufacturing personnel to understand the estimates used in developing the cost estimates (iii) evaluating the
appropriateness  of  management’s  estimates  of  total  costs  to  satisfy  the  performance  obligation;  (iv)  evaluating  whether  the  cost  estimates  used  by
management  were  reasonable  considering  consistency  with  company-specific  data;  and  (v)  determining  the  reasonableness  of  the  assumptions  used  in
management’s estimation process.

/s/ Marcum LLP

Marcum LLP

We have served as the Company’s auditor since 2015.

New York, NY
March 28, 2024

F-2

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PULMATRIX, INC.
Consolidated Balance Sheets
(in thousands, except share and per share data)

December 31, 2023

December 31, 2022

Assets
Current assets:

Cash and cash equivalents
Restricted cash
Accounts receivable
Prepaid expenses and other current assets

Total current assets
Property and equipment, net
Operating lease right-of-use asset
Long-term restricted cash
Other long-term assets
Total assets

Liabilities and stockholders’ equity
Current liabilities:

Accounts payable
Accrued expenses and other current liabilities
Operating lease liability
Deferred revenue

Total current liabilities

Deferred revenue, net of current portion
Operating lease liability, net of current portion

Total liabilities

Commitments and contingencies (Note 10)
Stockholders’ equity:

Preferred stock, $0.0001 par value — 500,000 shares authorized; 6,746 shares designated
Series A convertible preferred stock; no shares issued and outstanding at December 31,
2023 and 2022
Common stock, $0.0001 par value — 200,000,000 shares authorized; 3,652,285 and
3,639,185 shares issued and outstanding at December 31, 2023 and 2022, respectively
Additional paid-in capital
Accumulated deficit

Total stockholders’ equity
Total liabilities and stockholders’ equity

$

$

$

$

19,173    $
-   
928   
742   
20,843   
1,158   
10,309   
1,472   
176   
33,958    $

1,915    $
947   
429   
618   
3,909   
3,727   
8,327   
15,963   

-   

-   
305,592   
(287,597)  
17,995   
33,958    $

35,628 
153 
1,298 
1,068 
38,147 
235 
710 
1,472 
389 
40,953 

1,188 
1,638 
857 
1,339 
5,022 
4,822 
- 
9,844 

- 

- 
304,585 
(273,476)
31,109 
40,953 

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

F-3

 
 
 
 
 
   
 
 
 
    
 
  
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PULMATRIX, INC.
Consolidated Statements of Operations
(in thousands, except share and per share data)

Revenues

Operating expenses

Research and development
General and administrative

Total operating expenses
Loss from operations
Other income (expense)

Interest income
Other expense, net
Total other income, net
Net loss
Net loss per share attributable to common stockholders – basic and diluted
Weighted average common shares outstanding – basic and diluted

$

$
$

Year Ended December 31,

2023

2022

7,298    $

6,071 

15,518   
6,520   
22,038   
(14,740)  

867   
(248)  
619   
(14,121)   $
(3.87)   $

3,651,911   

18,240 
6,778 
25,018 
(18,947)

309 
(198)
111 
(18,836)
(5.46)
3,447,701 

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

F-4

 
 
 
 
 
 
 
 
   
 
 
 
 
 
    
 
  
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PULMATRIX, INC.
Consolidated Statements of Stockholders’ Equity
(in thousands, except share data)

Additional

Preferred Stock    
Shares     Amount   
1,830    $ 1,081   

Common Stock

Shares

    Amount   

Paid-in     Accumulated   
Capital
-    $ 301,008    $

Deficit

(254,640)   $

  3,222,037    $

Total
Stockholders’ 
Equity

47,449 

(1,830)  

(1,081)  

152,500   

-   

1,081   

-   

- 

-   
-   
-   
-   
-    $

-   
-   
-   
-    $

-   
-   
-   
-   
-   

-   
-   
-   
-   

252,013   
12,635   
-   
-   

  3,639,185    $

13,100   
-   
-   

  3,652,285    $

-   
-   
-   
-   
-    $ 304,585    $

1,382   
-   
1,114   
-   

-   
-   
-   
(18,836)  
(273,476)   $

-   
-   
-   
-    $ 305,592    $

53   
954   
-   

-   
-   
(14,121)  
(287,597)   $

1,382 
- 
1,114 
(18,836)
31,109 

53 
954 
(14,121)
17,995 

Balance — January 1, 2022

Conversion of preferred stock to common
stock
Issuance of common stock, net of issuance
costs
Adjustment due to reverse stock split
Stock-based compensation
Net loss

Balance — December 31, 2022

Issuance of common stock, net of issuance
costs
Stock-based compensation
Net loss

Balance — December 31, 2023

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

F-5

 
 
 
 
 
   
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PULMATRIX, INC.
Consolidated Statements of Cash Flows
(in thousands)

Cash flows from operating activities:

Net loss
Adjustments to reconcile net loss to net cash used in operating activities:

Depreciation and amortization
Amortization of operating lease right-of-use asset
Stock-based compensation
Loss on disposal of property and equipment
Changes in operating assets and liabilities:

Accounts receivable
Prepaid expenses and other current assets
Other long-term assets
Accounts payable
Accrued expenses and other current liabilities
Operating lease liability
Deferred revenue

Net cash used in operating activities

Cash flows from investing activities:
Purchases of property and equipment

Net cash used in investing activities

Cash flows from financing activities:

Proceeds from issuance of common stock, net of issuance costs
Preferred stock issuance costs

Net cash provided by financing activities
Net decrease in cash, cash equivalents and restricted cash
Cash, cash equivalents and restricted cash — beginning of period
Cash, cash equivalents and restricted cash — end of period

Reconciliation of cash, cash equivalents and restricted cash to the consolidated balance
sheets:

Cash and cash equivalents
Restricted cash
Long-term restricted cash

Total cash, cash equivalents and restricted cash

Supplemental disclosures of non-cash investing and financing information:

Operating lease right-of-use asset obtained in exchange for operating lease liability
Purchases of property and equipment not yet paid
Conversion of preferred stock to common stock

Year Ended December 31,

2023

2022

$

(14,121)   $

(18,836)

134   
1,341   
954   
8   

370   
326   
213   
727   
(1,080)  
(3,041)  
(1,816)  
(15,985)  

(676)  
(676)  

53   
-   
53   
(16,608)  
37,253   
20,645    $

19,173    $
-   
1,472   
20,645    $

9,116    $
389    $
-    $

162 
1,383 
1,114 
- 

(1,231)
(197)
(389)
511 
405 
(1,431)
(847)
(19,356)

(86)
(86)

1,382 
(152)
1,230 
(18,212)
55,465 
37,253 

35,628 
153 
1,472 
37,253 

- 
- 
1,081 

$

$

$

$
$
$

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

F-6

 
 
 
 
 
 
 
 
   
 
 
 
    
 
  
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
    
 
  
 
 
 
 
 
PULMATRIX, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

1. Nature of the Business

Pulmatrix,  Inc.  (the  “Company”)  was  incorporated  in  2013  as  a  Delaware  corporation.  The  Company  is  a  clinical-stage  biopharmaceutical  company
focused  on  the  development  of  a  novel  class  of  inhaled  therapeutic  products.  The  Company’s  proprietary  dry  powder  delivery  platform,  iSPERSE™, is
engineered to deliver small, dense particles with highly efficient dispersibility and delivery to the airways, which can be used with an array of dry powder
inhaler  technologies  and  can  be  formulated  with  a  variety  of  drug  substances.  The  Company  is  developing  a  pipeline  of  iSPERSE™-based  therapeutic
candidates targeted at prevention and treatment of a range of respiratory and other diseases with important unmet medical needs.

2. Summary of Significant Accounting Policies and Recent Accounting Standards

Principles of Consolidation

The consolidated financial statements represent the consolidation of the accounts of the Company and its subsidiary in conformity with generally accepted
accounting principles in the United States of America (“U.S. GAAP”). All intercompany accounts and transactions have been eliminated in consolidation.
Any reference in these notes to applicable guidance is meant to refer to the U.S. GAAP as found in the Accounting Standards Codification (“ASC”) and
Accounting Standards Update (“ASU”) of the Financial Accounting Standards Board (“FASB”).

Risks, Uncertainties and Liquidity

The ongoing research and development activities will be subject to extensive regulation by numerous governmental authorities in the United States. Prior to
marketing  in  the  United  States,  any  drug  developed  by  the  Company  must  undergo  rigorous  preclinical  and  clinical  testing  and  an  extensive  regulatory
approval process implemented by the United States Food and Drug Administration (“FDA”) under the Food, Drug and Cosmetic Act. The Company has
limited experience in conducting and managing the preclinical and clinical testing necessary to obtain regulatory approval. There can be no assurance that
the Company will not encounter problems in the clinical trials that will cause the Company or the FDA to delay or suspend clinical trials.

The Company’s success will depend in part on its ability to obtain patents and product license rights, maintain trade secrets, and operate without infringing
on the property rights of others, both in the United States and other countries. There can be no assurance that patents issued to or licensed by the Company
will not be challenged, invalidated, circumvented, or that the rights granted thereunder will provide proprietary protection or competitive advantages to the
Company.

Based on its current operating plan, the Company believes that its cash and cash equivalents as of December 31, 2023, will be adequate to fund its currently
anticipated operating expenses for at least twelve months from the date these financial statements are issued. The Company will need to secure additional
funding  in  the  future,  from  one  or  more  equity  or  debt  financings,  collaborations,  or  other  sources,  in  order  to  carry  out  all  of  the  Company’s  planned
research  and  development  activities  and  regulatory  activities;  commercialize  product  candidates;  or  conduct  any  substantial,  additional  development
requirements requested by the FDA. Additional funding may not be available to the Company on acceptable terms, or at all. If the Company is unable to
secure  additional  capital,  it  will  be  required  to  significantly  decrease  the  amount  of  planned  expenditures  and  may  be  required  to  cease  operations.  In
addition, any disruption in the capital markets could make any financing more challenging, and there can be no assurance that Pulmatrix will be able to
obtain such financing on commercially reasonable terms or at all. Curtailment of operations would cause significant delays in the Company’s efforts to
develop and introduce its products to market, which is critical to the realization of its business plan and the future operations of the Company.

Use of Estimates

In preparing the consolidated financial statements in conformity with U.S. GAAP, management is required to make estimates and assumptions that affect
the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements, as well as
the reported amounts of expenses during the reporting period. Due to inherent uncertainty involved in making estimates, actual results may differ from
these  estimates.  On  an  ongoing  basis,  the  Company  evaluates  its  estimates  and  assumptions.  The  most  significant  estimates  and  assumptions  in  the
Company’s consolidated financial statements include, but are not limited to, estimates of future expected costs in order to derive and recognize revenue and
estimates related to clinical trial accruals and upfront deposits.

F-7

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Concentrations of Credit Risk

Cash  is  a  financial  instrument  that  potentially  subjects  the  Company  to  concentrations  of  credit  risk.  For  all  periods  presented,  substantially  all  of  the
Company’s cash was deposited in accounts at a single financial institution that management believes is creditworthy, and the Company has not incurred any
losses  to  date.  The  Company  is  exposed  to  credit  risk  in  the  event  of  default  by  this  financial  institution  for  amounts  in  excess  of  the  Federal  Deposit
Insurance Corporation insured limits.

For the year ended December 31, 2023, revenue from one customer accounted for 100% of revenue recognized in the accompanying consolidated financial
statements.  For  the  year  ended  December  31,  2022,  revenue  from  one  customer  accounted  for  approximately  99%  of  revenue  recognized  in  the
accompanying consolidated financial statements. As of both December 31, 2023 and 2022, one customer accounted for 100% of accounts receivable.

Accounts Receivable

The Company’s accounts receivable generally relate to amounts reimbursable under its collaboration agreements with partners. The contractual life of the
Company’s receivables is generally short term. The Company makes judgments as to its ability to collect outstanding receivables and provides reserves
against receivables for estimated losses that may result from a customer’s inability to pay. Specific amounts determined to be uncollectable are charged
against the reserve. The Company believes that credit risks associated with its partners are not significant. For the years ended December 31, 2023 and
2022, the Company did not record any expected credit losses related to accounts receivable.

Cash, Cash Equivalents and Restricted Cash

Cash and cash equivalents are held in US banks and consist of cash deposited in operating and money market accounts.

Restricted  cash  represents  cash  held  in  a  depository  account  at  a  financial  institution  to  collateralize  conditional  stand-by  letters  of  credit  related  to  the
Company’s current office and laboratory facility lease agreement in the amounts of $1,421, as well as $51 deposited in a money market account as security
for a credit card as of December 31, 2023.

During  the  year  ended  December  31,  2023,  $153  of  restricted  cash  collateralizing  a  letter  of  credit  related  to  the  Company’s  former  headquarters  lease
became unrestricted, providing additional cash available for operations.

Property and Equipment, net

Property and equipment are recorded at cost less accumulated depreciation and amortization. Property and equipment are depreciated over their estimated
useful lives using the straight-line method. Leasehold improvements are amortized over the shorter of the estimated remaining lease term or the useful lives
of the related assets. Repairs and maintenance costs are expensed as incurred, whereas major improvements are capitalized as additions to property and
equipment.

Depreciation and amortization is provided over the following estimated useful lives:

Asset Description
Laboratory equipment
Computer equipment
Office furniture and equipment
Leasehold improvements

Estimated Useful Lives

5 years
3 years
5 years

  Shorter of estimated useful life or remaining lease term

Upon retirement or sale, the cost and related accumulated depreciation are removed from the balance sheet and the resulting gain or loss is reflected in
operations.

Impairment of Long-Lived Assets

The  Company  accounts  for  long-lived  assets  in  accordance  with  FASB  ASC  Topic  360,  Property, Plant, and Equipment.  Long-lived  assets,  other  than
goodwill,  are  reviewed  for  impairment  whenever  events  or  changes  in  circumstances  indicate  that  the  carrying  amount  of  the  assets  might  not  be
recoverable.  Conditions  that  would  necessitate  an  impairment  assessment  include  a  significant  decline  in  the  observable  market  value  of  an  asset,  a
significant change in the extent or manner in which an asset is used, or any other significant adverse change that would indicate that the carrying amount of
an asset or group of assets may not be recoverable. Application of alternative assumptions, such as changes in estimate of future cash flows, could produce
significantly different results.

F-8

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
For long-lived assets used in operations, impairment losses are only recorded if the asset’s carrying amount is not recoverable through its undiscounted,
probability-weighted future cash flows. The Company measures the impairment loss based on the difference between the carrying amount and estimated
fair value.

Fair Value of Financial Instruments

The  Company  is  required  to  disclose  information  on  all  assets  and  liabilities  reported  at  fair  value  that  enables  an  assessment  of  the  inputs  used  in
determining the reported fair values. FASB ASC Topic 820, Fair Value Measurement, establishes a hierarchy of inputs used in measuring fair value that
maximizes  the  use  of  observable  inputs  and  minimizes  the  use  of  unobservable  inputs  by  requiring  that  the  observable  inputs  be  used  when  available.
Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from sources independent of
the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the inputs that market participants would use in pricing the
asset  or  liability  and  are  developed  based  on  the  best  information  available  in  the  circumstances.  The  fair  value  hierarchy  applies  only  to  the  valuation
inputs used in determining the reported fair value of the investments and is not a measure of the investment credit quality. The three levels of the fair value
hierarchy are described below:

Level 1 — Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the
measurement date.

Level 2 — Valuations based on quoted prices for similar assets or liabilities in markets that are not active, or for which all significant inputs are observable,
either directly or indirectly.

Level  3  —  Valuations  that  require  inputs  that  reflect  the  Company’s  own  assumptions  that  are  both  significant  to  the  fair  value  measurement  and
unobservable.

To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires
more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3.
A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

As  of  December  31,  2023  and  2022,  the  Company  did  not  hold  any  financial  assets  or  liabilities  that  were  measured  at  fair  value  on  a  recurring  or
nonrecurring basis. During the years ended December 31, 2023 and 2022, there were no transfers between Level 1, Level 2 and Level 3.

Leases

The Company accounts for leases in accordance with FASB ASC Topic 842, Leases. At the inception of an arrangement, the Company determines whether
the arrangement is or contains a lease based on the unique facts and circumstances present. The Company has elected not to recognize on the balance sheet
leases with terms of one year or less. Options to renew a lease are not included in the Company’s initial lease term assessment unless there is reasonable
certainty that the Company will renew. The Company monitors its plans to renew its material leases on a quarterly basis.

Operating  lease  liabilities  and  their  corresponding  right-of-use  assets  are  recorded  based  on  the  present  value  of  lease  payments  over  the  expected
remaining  lease  term.  However,  certain  adjustments  to  the  right-of-use  asset  may  be  required  for  items,  such  as  incentives  received.  The  interest  rate
implicit  in  lease  contracts  is  typically  not  readily  determinable.  As  a  result,  the  Company  utilizes  its  incremental  borrowing  rates,  which  are  the  rates
incurred to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment. The Company
has elected to account for the lease and non-lease components as a combined lease component. Lease expense for operating lease payments is recognized
on a straight-line basis over the lease term.

Revenue Recognition

The Company’s principal source of revenue during the years ended December 31, 2023 and 2022 was derived from a collaboration arrangement and license
agreement that relate to the development and commercialization of PUR1900 under the Cipla Agreement (as defined below).

At inception, management determines whether contracts are within the scope of FASB ASC Topic 606, Revenue from Contracts with Customers (“ASC
606”) or other topics, including FASB ASC Topic 808, Collaborative Arrangements (“ASC 808”). For contracts that are within the scope of ASC 808, the
Company evaluates whether the counterparty is a customer for any of the units of account (i.e., distinct goods and services) in the contract. For units of
account where the counterparty is considered a customer, the Company applies ASC 606 to those unit(s) of account, including recognition, measurement,
presentation, and disclosure guidance. To date, the Company has determined it is appropriate to apply ASC 606 to all contracts and units of account for
contracts within the scope of ASC 808.

F-9

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
For  contracts  and  units  of  account  that  are  determined  to  be  within  the  scope  of  ASC  606,  revenue  is  recognized  when  a  customer  obtains  control  of
promised  goods  or  services.  The  amount  of  revenue  recognized  reflects  the  consideration  to  which  management  expects  to  be  entitled  to  receive  in
exchange  for  these  goods  and  services.  To  achieve  this  core  principle,  management  applies  the  following  five  steps  (i)  identify  the  contract  with  the
customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance
obligations in the contract; and (v) recognize revenue when or as the Company satisfies a performance obligation. The Company only applies the five-step
model to contracts when it is probable that the Company will collect the consideration it is entitled to in exchange for the goods or services it transfers to
the customer.

Identification  of  Performance  Obligations.  Performance  obligations  promised  in  a  contract  are  identified  at  contract  inception  based  on  the  goods  and
services that are both capable of being distinct and are distinct in the context of the contract. To the extent a contract includes multiple promised goods and
services, management applies judgment to determine whether promised goods and services are both capable of being distinct and distinct in the context of
the contract. If these criteria are not met, the promised goods and services are accounted for as a combined performance obligation.

Transaction  Price  and  Milestone  Payments.  The  transaction  price  is  determined  based  on  the  consideration  to  which  the  Company  will  be  entitled  in
exchange for transferring goods and services to the customer. At the inception of each contract that includes research or development milestone payments,
the Company evaluates whether the 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 Company’s control or the licensee, such as regulatory approvals, are not considered probable
of being achieved until those approvals are received. Management evaluates factors such as the scientific, clinical, regulatory, commercial, and other risks
that must be overcome to achieve the particular milestone in making this assessment. There is considerable judgment involved in determining whether it is
probable that a significant revenue reversal would not occur. At the end of each reporting period, management reevaluates the probability of achievement of
all milestones subject to constraint and, if necessary, adjust the estimate of the overall transaction price. Any such adjustments are recorded on a cumulative
catch-up basis, which would affect revenues and earnings in the period of adjustment.

Exclusive Licenses. If the license to the Company’s intellectual property is determined to be distinct from the other promises or performance obligations
identified in the arrangement, the Company recognizes revenue from non-refundable, upfront fees allocated to the license when the license is transferred to
the customer and the customer is able to use and benefit from the license. In assessing whether a promise or performance obligation is distinct from the
other promises, the Company considers factors such as the research, development, manufacturing and commercialization capabilities of the collaboration
partner and the availability of the associated expertise in the general marketplace. In addition, the Company considers whether the counterparty can benefit
from a promise for its intended purpose without the receipt of the remaining promise, whether the value of the promise is dependent on the unsatisfied
promise, whether there are other vendors that could provide the remaining promise, and whether it is separately identifiable from the remaining promise.
For  licenses  that  are  combined  with  other  promises,  the  Company  utilizes  judgment  to  assess  the  nature  of  the  combined  performance  obligation  to
determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring
progress for purposes of recognizing revenue. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure
of performance and related revenue recognition. The measure of progress, and thereby periods over which revenue should be recognized, are subject to
estimates by management and may change over the course of the research and development and licensing agreement. Such a change could have a material
impact on the amount of revenue the Company records in future periods.

Research and Development Services. The promises under the Company’s arrangements may include research and development services to be performed by
the Company on behalf of the counterparty. Payments or reimbursements from customers resulting from the Company’s research and development efforts
are recognized as the services are performed and presented on a gross basis because the Company is the principal for such efforts. The Company uses an
input  method,  according  to  the  ratio  of  costs  incurred  to  the  total  costs  expected  to  be  incurred  in  the  future  to  satisfy  the  performance  obligation.  In
management’s judgment, this input method is the best measure of the transfer of control of the performance obligation. Amounts received prior to revenue
recognition are recorded as deferred revenue. Amounts expected to be recognized as revenue within the 12 months following the balance sheet date are
classified  as  current  portion  of  deferred  revenue  in  the  accompanying  consolidated  balance  sheets.  Amounts  not  expected  to  be  recognized  as  revenue
within the 12 months following the balance sheet date are classified as deferred revenue, net of current portion. Reimbursements from and payments to the
counterparty that are the result of a collaborative relationship, instead of a customer relationship, such as co-development activities, are recognized as the
services  are  performed  and  presented  as  a  reduction  to  research  and  development  expense.  To  date,  the  Company  has  determined  that  all  arrangements
which include research and development services have been transacted with customers and recognized on a gross basis using ASC 606.

Royalties. For contracts that include sales-based royalties, including milestone payments upon first commercial sales and milestone payments based on a
level of sales, which are the result of a customer-vendor relationship and for which the license is deemed to be the predominant item to which the royalties
relate, the Company recognizes revenue at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the
royalty has been allocated has been satisfied or partially satisfied.

F-10

 
 
 
 
 
 
 
 
 
Customer Options. If an arrangement is determined to contain customer options that allow the customer to acquire additional goods or services, the goods
and services underlying the customer options that are not determined to be material rights are not considered to be performance obligations at the outset of
the  arrangement,  as  they  are  contingent  upon  option  exercise.  The  Company  evaluates  the  customer  options  for  material  rights,  or  options  to  acquire
additional goods or services for free or at a discount. If the customer options are determined to represent a material right, the material right is recognized as
a separate performance obligation at the outset of the arrangement. The Company allocates the transaction price to material rights based on the relative
standalone  selling  price,  which  is  determined  based  on  the  identified  discount  and  the  probability  that  the  customer  will  exercise  the  option.  Amounts
allocated to a material right are not recognized as revenue until, at the earliest, the option is exercised.

For a complete discussion of accounting for the Company’s revenue contracts, see Note 6, Significant Agreements.

Research and Development Costs

Research  and  development  costs  are  expensed  as  incurred  and  include  salaries,  benefits,  bonus,  stock-based  compensation,  license  fees,  milestone
payments due under license agreements, costs paid to third-party contractors to perform research, conduct clinical trials, and develop drug materials and
delivery devices; and associated overhead and facilities costs. Clinical trial costs are a substantial component of research and development expenses and
include  costs  associated  with  third-party  contractors,  clinical  research  organizations  (“CROs”)  and  clinical  manufacturing  organizations  (“CMOs”).
Invoicing from third-party contractors for services performed can lag several months. The Company accrues the costs of services rendered in connection
with third-party contractor activities based on management’s estimate of fees and costs associated with the contract that were rendered during the period
and  they  are  expensed  as  incurred.  Research  and  development  costs  that  are  paid  in  advance  of  performance  are  capitalized  as  prepaid  expenses  and
amortized over the service period as the services are provided.

Stock-based Compensation

The Company recognizes all employee stock-based compensation as a cost in the consolidated financial statements. Equity-classified awards principally
related to stock options, which are measured at the grant date fair value of the award. The Company determines grant-date fair value of stock option awards
using  the  Black-Scholes  option-pricing  model.  For  service-based  vesting  grants,  expense  is  recognized  over  the  requisite  service  period  based  on  the
number of options or shares expected to ultimately vest. For performance-based vesting grants, expense is recognized over the requisite period until the
performance obligation is met, assuming that it is probable. No expense is recognized for performance-based grants until it is probable the vesting criteria
will be satisfied.

Stock-based  payments  to  non-employees  are  recognized  as  services  are  rendered,  generally  on  a  straight-line  basis.  The  Company  believes  that  the  fair
values of these awards are more reliably measurable than the fair values of the services rendered.

Convertible Financial Instruments

The Company bifurcates conversion options from their host instruments and accounts for them as freestanding derivative financial instruments if certain
criteria  are  met.  The  criteria  include  circumstances  in  which  (a)  the  economic  characteristics  and  risks  of  the  embedded  derivative  instrument  are  not
clearly  and  closely  related  to  the  economic  characteristics  and  risks  of  the  host  contract,  (b)  the  hybrid  instrument  that  embodies  both  the  embedded
derivative  instrument  and  the  host  contract  is  not  re-measured  at  fair  value  under  otherwise  applicable  generally  accepted  accounting  principles  with
changes in fair value reported in earnings as they occur and (c) a separate instrument with the same terms as the embedded derivative instrument would be
considered a derivative instrument. An exception to this rule is when the host instrument is deemed to be conventional, as that term is described under
applicable U.S. GAAP.

When the Company has determined that the embedded conversion options should not be bifurcated from their host instruments, discounts are recorded for
the intrinsic value of any beneficial conversion options embedded in the instruments based upon the differences between the fair value of the underlying
common  stock  at  the  commitment  date  of  the  transaction  and  the  effective  conversion  price  embedded  in  the  instrument.  Deemed  dividends  are  also
recorded  for  the  intrinsic  value  of  beneficial  conversion  options  embedded  in  preferred  stock  based  upon  the  differences  between  the  fair  value  of  the
underlying common stock at the commitment date of the transaction and the effective conversion price embedded in the preferred stock.

Common Stock Warrants

The Company classifies as equity any warrants that (i) require physical settlement or net-share settlement or (ii) provide the Company with a choice of net-
cash settlement or settlement in its own shares (physical settlement or net-share settlement). The Company classifies as assets or liabilities any warrants
that (i) require net-cash settlement (including a requirement to net cash settle the contract if an event occurs and if that event is outside the Company’s
control), (ii) gives the counterparty a choice of net-cash settlement or settlement in shares (physical settlement or net-share settlement) or (iii) that contain
reset  provisions  that  do  not  qualify  for  the  scope  exception.  The  Company  assesses  classification  of  its  common  stock  warrants  and  other  freestanding
derivatives at each reporting date to determine whether a change in classification between assets and liabilities is required. The Company’s freestanding
derivatives consist of warrants to purchase common stock that were issued in connection with its (i) convertible preferred stock, (ii) private placements, (iii)
term  loan,  (iv)  consulting  services  and  (v)  underwriting  and  representative  services.  The  Company  evaluated  these  warrants  to  assess  their  proper
classification and determined that the common stock warrants meet the criteria for equity classification in the consolidated balance sheets.

F-11

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Basic and Diluted Net Loss Per Share

Basic and diluted earnings (loss) per share are computed using the two-class method, which is an earnings allocation method that determines earnings (loss)
per share for common shares and participating securities. The participating securities consist of the Company’s preferred stock. The undistributed earnings
are allocated between common shares and participating securities as if all earnings had been distributed during the period. In periods of loss, no allocation
is made to the preferred shares and diluted net loss per share is the same as basic net loss per share because common stock equivalents are excluded as their
inclusion would be anti-dilutive.

Income Taxes

Income taxes are recorded in accordance with FASB ASC Topic 740, Income Taxes (“ASC 740”), which provides for deferred taxes using an asset and
liability approach. The Company recognizes deferred tax assets and liabilities for the expected future tax consequences of events that have been included in
the  consolidated  financial  statements  or  tax  returns.  Deferred  tax  assets  and  liabilities  are  determined  based  on  the  difference  between  the  financial
statement and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. A valuation
allowance is provided, if, based upon the weight of available evidence, it is more likely than not that some or all of the net deferred tax assets will not be
realized.

The  Company  accounts  for  uncertain  tax  positions  in  accordance  with  the  provisions  of  ASC  740.  When  uncertain  tax  positions  exist,  the  Company
recognizes the tax benefit of tax positions to the extent that the benefit will more likely than not be realized. The determination as to whether the tax benefit
will more likely than not be realized is based upon the technical merits of the tax position, as well as consideration of the available facts and circumstances.

Recent Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the FASB or other standard setting bodies that are adopted by the Company as of the
specified effective date. Except as set forth below, the Company did not adopt any new accounting pronouncements during the year ended December 31,
2023 that had a material effect on its consolidated financial statements.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326)—Measurement of Credit Losses on Financial Instruments
(“ASU  2016-13”),  which  has  been  subsequently  amended.  The  provisions  of  ASU  2016-13  modify  the  impairment  model  for  financial  instruments  to
utilize an expected loss methodology in place of the currently used incurred loss methodology and require consideration of a broader range of reasonable
and supportable information to inform credit loss estimates. The Company adopted the standard as of January 1, 2023. The adoption of this standard did not
have a material effect on the Company’s consolidated financial statements.

As of December 31, 2023, there are no new, or existing recently issued, accounting pronouncements that are of significance, or potential significance, that
impact the Company’s consolidated financial statements.

3. Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following:

Insurance
Software and hosting costs
Clinical and consulting
Other

Total prepaid expenses and other current assets

F-12

December 31,
2023

December 31,
2022

  $

  $

232    $
108   
30   
372   
742    $

286 
99 
517 
166 
1,068 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
4. Property and Equipment, Net

Property and equipment, net consisted of the following:

Laboratory equipment
Capital in progress
Office furniture and equipment
Computer equipment
Leasehold improvements

Less accumulated depreciation and amortization
Property and equipment, net

December 31,
2023

December 31,
2022

  $

  $

1,656    $
600   
401   
237   
-   
2,894   
(1,736)  
1,158    $

1,827 
- 
217 
275 
664 
2,983 
(2,748)
235 

Depreciation and amortization expense for the year ended December 31, 2023 and 2022 was $134 and $162, respectively. During the year ended December
31, 2023, the Company disposed of certain property and equipment primarily in connection with moving to its new office, resulting in a loss on disposal of
$8. During the year ended December 31, 2022, the Company disposed of certain fixed assets with immaterial gross costs and accumulated depreciation.

5. Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following:

Accrued purchases of property and equipment
Clinical and consulting
Wages and incentives
Legal and patents
Other

Total accrued expenses and other current liabilities

December 31,
2023

December 31,
2022

  $

  $

389    $
347   
70   
42   
99   
947    $

- 
475 
1,130 
- 
33 
1,638 

6. Significant Agreements

Development and Commercialization Agreement with Cipla Technologies LLC (“Cipla”)

On  April  15,  2019,  the  Company  entered  into  a  Development  and  Commercialization  Agreement  (the  “Cipla  Agreement”)  with  Cipla  for  the  co-
development  and  commercialization,  on  a  worldwide  exclusive  basis,  of  PUR1900,  the  Company’s  inhaled  iSPERSE™  drug  delivery  system  (the
“Product”) enabled formulation of the antifungal drug itraconazole, which is only available as an oral drug, for the treatment of all pulmonary indications,
including allergic bronchopulmonary aspergillosis (“ABPA”) in patients with asthma. The Company entered into an amendment to the Cipla Agreement on
November 8, 2021 (the “Second Amendment”) and a subsequent amendment on January 6, 2024 (the “Third Amendment”). All references to the Cipla
Agreement herein refer to the Cipla Agreement, as amended.

The  Company  received  a  non-refundable  upfront  payment  of  $22.0  million  (the  “Upfront  Payment”)  under  the  Cipla  Agreement.  Upon  receipt  of  the
Upfront Payment, the Company irrevocably assigned to Cipla the following assets, solely to the extent that each covers the Product in connection with any
treatment, prevention, and/or diagnosis of diseases of the pulmonary system (“Pulmonary Indications”): all existing and future technologies, current and
future drug master files, dossiers, third-party contracts, regulatory filings, regulatory materials and regulatory approvals, patents, and intellectual property
rights, as well as any other associated rights and assets directly related to the Product, specifically in relation to Pulmonary Indications (collectively, the
“Assigned Assets”), excluding most specifically the Company’s iSPERSE™ technology. A portion of the Upfront Payment was deposited by the Company
into  a  bank  account,  along  with  an  equal  amount  from  the  Company,  and  was  dedicated  to  the  development  of  the  Product  (the  “Initial  Development
Funding”). The Initial Development Funding was depleted during the year ended December 31, 2021, at which point the Company and Cipla each became
responsible for a portion of the development costs actually incurred as described below (the “Co-Development Phase”).

F-13

 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Pursuant to the Second Amendment, the Company and Cipla were each responsible for 60% and 40%, respectively, of the Company’s overhead costs and
the  time  spent  by  the  Company’s  employees  and  consultants  on  development  of  the  Product  (“Direct  Costs”).  The  Company  will  share  all  other
development costs with Cipla that are not Direct Costs, such as the cost of clinical research organizations, manufacturing costs and other third-party costs,
on a 50/50 basis.

Pursuant to the Third Amendment, the Company and Cipla agreed that, during the period commencing on January 6, 2024 and ending July 30, 2024 (the
“Wind Down Period”), the Company will complete all Phase 2b activities, assign or license all patents to Cipla and their registration with the appropriate
authorities in regions other than the United States, complete a physical and demonstrable technology transfer and secure all data from the Phase 2b study
for inclusion in the safety database. The Company will share costs with Cipla during the Wind Down Period in the same proportions in effect with the
Second Amendment discussed above, but subject to a maximum reimbursement amount by Cipla as approved by the joint steering committee.

Accounting Treatment

The Company concluded that because both it and Cipla are active participants in the arrangement and are exposed to the significant risks and rewards of the
collaboration,  the  Company’s  collaboration  with  Cipla  is  within  the  scope  of  ASC  808.  The  Company  concluded  that  Cipla  is  a  customer  since  they
contracted  with  the  Company  to  obtain  research  and  development  services  and  a  license  to  the  Assigned  Assets,  each  of  which  is  an  output  of  the
Company’s ordinary activities, in exchange for consideration. Therefore, the Company has applied the guidance in ASC 606 to account for the research and
development services and a license within the contract. The Company determined that the research and development services and license to the Assigned
Assets are considered highly interdependent and highly interrelated and therefore are considered a single combined performance obligation because Cipla
cannot  benefit  from  the  license  without  the  performance  by  the  Company  of  the  research  and  development  services.  Such  research  and  development
services are highly specialized and proprietary to the Company and therefore not available to Cipla from any other third party.

The Company initially determined the total transaction price to be $22.0 million – comprised of $12.0 million for research and development services for the
Product and $10.0  million  for  the  irrevocable  license  to  the  Assigned  Assets.  Any  consideration  related  to  the  Co-Development  Phase  was  not  initially
included in the transaction price as such amounts are subject to the variable consideration constraint. Additionally, upon commercialization, Cipla and the
Company will share equally, both positive and negative total free cash-flows earned by Cipla in respect of the Product. However, the Company has not
included such free cash-flows in the transaction price as these milestones are constrained.

The Company concluded that the Second Amendment represented a contract modification that is treated for accounting purposes as the termination of the
Cipla  Agreement  and  a  creation  of  a  new  contract  (the  “Amended  Cipla  Agreement”).  Accordingly,  the  modification  is  accounted  for  on  a  prospective
basis. The total transaction price for the Amended Cipla Agreement includes variable consideration from the Second Amendment as well as $7.4 million
deferred under the Cipla Agreement as of the Second Amendment execution date.

The Company concluded that the Third Amendment, executed on January 6, 2024, is a nonrecognized subsequent event for the year ended December 31,
2023.  Accordingly,  the  Company’s  accounting  for  the  Cipla  Agreement  as  of  and  during  the  year  ended  December  31,  2023  reflects  the  contract  and
estimates in effect as of December 31, 2023.

Revenue is recognized for the Cipla Agreement as the research and development services are provided using an input method, according to the ratio of
costs incurred to the total costs expected to be incurred in the future to satisfy the Company’s obligations. In management’s judgment, this input method is
the best measure of the transfer of control of the combined performance obligation. The amounts received that have not yet been recognized as revenue are
recorded in deferred revenue on the Company’s consolidated balance sheets, with amounts expected to be recognized in the next 12 months recorded as
current.

During  the  years  ended  December  31,  2023  and  2022,  the  Company  recognized  $7.3  million  and  $6.1  million,  respectively,  in  revenue  related  to  the
research and development services and irrevocable license to the Assigned Assets in the Company’s consolidated statements of operations. Of the revenue
recognized  during  the  years  ended  December  31,  2023  and  2022,  $1.1  million  and  $0.8  million,  respectively,  was  included  in  deferred  revenue  at  the
beginning of the period. As of December 31, 2023, the aggregate transaction price related to the Company’s unsatisfied obligations was $4.3 million and
was recorded in deferred revenue, $0.6 million of which was current.

F-14

 
 
 
 
 
 
 
 
 
 
 
 
7. Common Stock

In May 2021, the Company entered into an At-The-Market Sales Agreement (the “Sales Agreement”) with H.C. Wainwright and Co., LLC (“HCW”) to act
as the Company’s sales agent with respect to the issuance and sale of up to $20.0 million of the Company’s shares of common stock, from time to time in
an  at-the-market  public  offering  (the  “ATM  Offering”).  Sales  of  common  stock  under  the  Sales  Agreement  are  made  pursuant  to  an  effective  shelf
registration statement on Form S-3, which was filed with the Securities and Exchange Commission (“SEC”) on May 26, 2021, and subsequently declared
effective on June 9, 2021 (File No. 333-256502), and a related prospectus. HCW acts as the Company’s sales agent on a commercially reasonable efforts
basis, consistent with its normal trading and sales practices and applicable state and federal laws, rules and regulations and the rules of The Nasdaq Capital
Market (“Nasdaq”). If expressly authorized by the Company, HCW may also sell the Company’s common stock in privately negotiated transactions. There
is  no  specific  date  on  which  the  ATM  Offering  will  end,  there  are  no  minimum  sale  requirements  and  there  are  no  arrangements  to  place  any  of  the
proceeds of the ATM Offering in an escrow, trust or similar account. HCW is entitled to compensation at a fixed commission rate of 3.0% of the gross
proceeds from the sale of the Company’s common stock pursuant to the Sales Agreement.

During the year ended December 31, 2023, the Company sold 13,100 shares of its common stock under the Sales Agreement at a weighted-average price of
approximately $4.25 per share, which resulted in net proceeds of approximately $53 thousand.

During the year ended December 31, 2022, the Company sold 252,013 shares of its common stock under the Sales Agreement at a weighted-average price
of approximately $5.70 per share which resulted in net proceeds of approximately $1.4 million.

8. Warrants

The following table summarizes warrant activity for the year ended December 31, 2023:

Number of
Common
Warrants

Outstanding January 1, 2023

Warrants Expired

Outstanding December 31, 2023

Weighted
Average

Exercise Price    
61.30   
149.99   
51.89   

Average
Remaining
Contractual
Term (Years)    

Aggregate
Intrinsic Value  

1.78    $

- 

1,284,803    $
(123,310)  
1,161,493    $

The following represents a summary of the warrants outstanding and exercisable at December 31, 2023, all of which are equity-classified:

Issue Date
December 17, 2021 
December 17, 2021 
February 16, 2021 
August 7, 2020 
August 7, 2020 
July 23, 2020 
July 13, 2020 
July 13, 2020 
April 8, 2019 
April 8, 2019 
February 12, 2019 
February 12, 2019 
February 4, 2019 
January 31, 2019 
December 3, 2018 

June 15, 2015 
Total 

$
$
$
$
$
$
$
$
$
$
$
$
$
$
$

$

Adjusted
Exercise Price

Expiration Date

Outstanding

Exercisable

Number of Shares 
Underlying Warrants

14.99   
13.99   
49.99   
35.99   
44.99   
35.99   
44.99   
35.99   
26.99   
33.74   
36.62   
26.79   
42.49   
42.49   
77.99   

1,509.99   

December 15, 2026 
December 17, 2026 
February 11, 2026 
July 14, 2025 
July 14, 2025 
July 14, 2025 
July 14, 2025 
July 14, 2025 
April 8, 2024 
April 3, 2024 
February 7, 2024 
August 12, 2024 
January 30, 2024 
January 26, 2024 
June 3, 2024 
Five years after milestone
achievement 

F-15

36,538   
281,047   
65,003   
90,743   
10,939   
77,502   
21,846   
334,800   
65,907   
39,871   
5,548   
66,675   
1,732   
511   
46,876   

36,538 
281,047 
65,003 
90,743 
10,939 
77,502 
21,846 
334,800 
65,907 
39,871 
5,548 
66,675 
1,732 
511 
46,876 

15,955   
1,161,493   

- 
1,145,538 

 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
   
 
            
 
 
 
 
    
 
  
 
 
 
 
 
 
 
   
 
 
 
 
   
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
 
 
 
 
9. Stock-based Compensation

The Company sponsors the Pulmatrix, Inc. Amended and Restated 2013 Employee, Director and Consultant Equity Incentive Plan (the “Incentive Plan”).
As of December 31, 2023, the Incentive Plan provided for the grant of up to 636,322 shares of the Company’s common stock, of which 288,186 shares
remained  available  for  future  grant.  In  addition,  the  Company  sponsors  two  legacy  plans  under  which  no  additional  awards  may  be  granted.  As  of
December 31, 2023, the two legacy plans have a total of 8 options outstanding, all of which are fully vested and for which common stock will be issued
upon exercise.

The following table summarizes stock option activity for the year ended December 31, 2023:

Outstanding — January 1, 2023

Granted
Forfeited or cancelled
Expired

Outstanding — December 31, 2023
Exercisable — December 31, 2023

Number of
Options

304,823   
118,472   
(78,965)  
(24)  
344,306   
206,695   

$
$
$
$
$
$

Weighted-
Average
Exercise
Price

28.66   
3.98   
25.27   
376.25   
20.92   
29.99   

Weighted-
Average
Remaining
Contractual
Term
(Years)

Aggregate
Intrinsic
Value

7.54    $
6.88    $

- 
- 

The Company records stock-based compensation expense related to stock options based on their grant-date fair value. During the years ended December
31, 2023 and 2022, the Company used the Black-Scholes option-pricing model to estimate the fair value of stock option grants and to determine the related
compensation  expense.  The  assumptions  used  in  calculating  the  fair  value  of  stock-based  payment  awards  represent  management’s  best  estimates.  The
weighted-average grant-date fair value of options granted during the years ended December 31, 2023 and 2022 was $3.27 per share and $5.41 per share,
respectively. The weighted-average assumptions used in determining fair value of the stock options for the years ended December 31, 2023 and 2022 are as
follows:

Expected option life (years)
Risk-free interest rate
Expected volatility
Expected dividend yield

Year Ended December 31,

2023

2022

6.0 
3.53% 
104.24% 
-% 

6.0 
2.06%
113.25%
-%

The  expected  life  of  the  Company’s  options  was  determined  using  the  simplified  method  as  a  result  of  limited  historical  data  regarding  the  Company’s
activity. The risk-free interest rate was obtained from U.S. Treasury rates for the expected life of the stock options. The Company’s expected volatility was
based upon the historical volatility of the Company’s common stock. The dividend yield considers that the Company has not historically paid dividends and
does not expect to pay dividends in the foreseeable future.

As of December 31, 2023, there was $0.8 million of unrecognized stock-based compensation expense related to unvested stock options granted under the
Company’s stock award plans. This expense is expected to be recognized over a weighted-average period of approximately 2.0 years.

The following table presents total stock-based compensation expense for the years ended December 31, 2023 and 2022:

Research and development
General and administrative
Total stock-based compensation expense

F-16

Year Ended December 31,

2023

2022

$

$

243    $
711   
954    $

254 
860 
1,114 

 
 
 
 
 
 
 
 
   
   
   
 
 
 
 
   
 
 
 
 
 
    
 
         
 
 
 
    
 
  
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
   
 
 
 
 
 
 
 
10. Commitments and Contingencies

Research and Development Activities

The Company contracts with various other organizations to conduct research and development activities, including clinical trials. The scope of the services
under contracts for research and development activities may be modified and the contracts, subject to certain conditions, may generally be cancelled by the
Company  upon  written  notice.  In  some  instances,  the  contracts,  subject  to  certain  conditions,  may  be  cancelled  by  the  third  party.  As  of  December  31,
2023, the Company had no material noncancellable commitments not expected to be reimbursed under the Cipla Agreement.

Legal Proceedings

In  the  ordinary  course  of  its  business,  the  Company  may  be  involved  in  various  legal  proceedings  involving  contractual  and  employment  relationships,
patent  or  other  intellectual  property  rights,  and  a  variety  of  other  matters.  The  Company  is  not  aware  of  any  pending  legal  proceedings  that  would
reasonably be expected to have a material impact on the Company’s financial position or results of operations.

11. Leases

New Corporate Headquarters

The Company has limited leasing activities as a lessee which are primarily related to its corporate headquarters, which were relocated during the year ended
December 31, 2023. On January 7, 2022, the Company executed a lease agreement with Cobalt Propco 2020, LLC for its new corporate headquarters at 36
Crosby Drive, Bedford, Massachusetts. The leased premises comprise approximately 20,000 square feet of office and lab space, and the lease provides for
base rent of $0.1 million per month, payment of which began in March 2024, and which will increase 3% each year over the ten-year noncancellable term.
The Company has the option to extend the lease for one additional five-year term and is responsible for real estate taxes, maintenance, and other operating
expenses applicable to the leased premises.

The  lease  commenced  on  August  1,  2023,  following  substantial  completion  of  construction  to  prepare  the  premises  for  the  Company’s  use,  and  the
Company  has  included  the  lease  as  a  component  of  its  operating  lease  right-of-use  asset  and  operating  lease  liabilities  upon  commencement.  The
improvements to prepare the leased premises for the Company’s intended use have been funded by (i) the landlord, through a tenant allowance of $3.9
million,  (ii)  a  landlord-funded  advance  on  tenant  improvements  of  $0.5  million  which  will  be  repaid  over  the  lease  term,  and  (iii)  approximately  $2.2
million funded by the Company.

Other Leasing Activities

During the first quarter of 2023, the Company executed a two-month lease extension for its previous corporate headquarters in Lexington, Massachusetts,
through August 31, 2023. The Company terminated that lease extension, as planned, during the third quarter of 2023.

The  Company  also  leases  small  office  equipment  which  is  primarily  short-term  or  immaterial  in  nature.  Therefore,  no  right-of-use  assets  and  lease
liabilities are recognized for these leases.

The components of lease expense for the Company for the years ended December 31, 2023 and 2022 were as follows:

Lease cost

Fixed lease cost
Variable lease cost
Total lease cost

Other information

Cash paid for amounts included in the measurement of lease liabilities
Weighted-average remaining lease term — operating leases
Weighted-average discount rate — operating leases

F-17

  $

  $

  $

Year Ended December 31,

2023

2022

1,753 
593 
2,346 

  $

  $

1,430 
695 
2,125 

3,454 
9.9 years 

  $

11.00% 

1,478 
0.5 years 

2.97%

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
 
 
 
 
  
 
 
  
 
 
 
 
 
 
 
  
 
 
  
 
 
  
 
 
  
 
 
 
 
 
 
 
 
Maturities of lease liabilities due under these lease agreements as of December 31, 2023 are as follows:

Maturity of lease liabilities
2024
2025
2026
2027
2028
2029 and thereafter
Total lease payments
Less: interest

Total lease liabilities

Reported as of December 31, 2023
Lease liabilities — short term
Lease liabilities — long term

Total lease liabilities

  Operating Leases  

  $

  $

  $

  $

1,357 
1,326 
1,364 
1,402 
1,442 
7,711 
14,602 
(5,846)
8,756 

429 
8,327 
8,756 

12. Income Taxes

The Company had no income tax expense due to operating losses incurred for the years ended December 31, 2023 and 2022.

A reconciliation of the provision for income taxes computed at the statutory federal income tax rate to the provision for income taxes as reflected in the
consolidated financial statements is as follows:

Income tax computed at federal statutory tax rate
State taxes, net of federal benefit
Research and development credits
Expiration of stock options
Permanent differences
Limitations on credits and net operating losses
Change in valuation allowance

2023

2022

21.0%  
5.9%  
7.9%  
(3.1)%  
1.4%  
(1.7)%  
(31.4)%  
- 

21.0%
6.0%
4.9%
(2.5)%
0.9%
(0.8)%
(29.5)%
- 

The significant components of the Company’s deferred tax assets as of December 31, 2023 and 2022 were as follows:

Deferred tax assets:

Net operating loss carryforwards
Capitalized research and development expenses
Lease liability
Research and development credit carryforwards
Stock-based compensation
Capitalized start-up expenses
Other

Total deferred tax assets
Deferred tax liabilities:
Right-of-use-asset

Total deferred tax liabilities
Valuation allowance
Net deferred tax liabilities

2023

2022

  $

12,866    $
7,642   
2,977   
1,528   
873   
153   
1,303   
27,342   

(2,816)  
(2,816)  
(24,526)  

  $

-    $

F-18

11,557 
4,460 
234 
698 
860 
293 
2,206 
20,308 

(194)
(194)
(20,114)
- 

 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
Subject to the limitations described below, as of December 31, 2023, the Company had federal net operating loss carryforwards of approximately $58.1
million available to reduce future taxable income, of which $3.8 million is subject to expiration between 2026 and 2037 and $54.3 million may be carried
forward indefinitely. As of December 31, 2023, the Company had state net operating loss carryforwards of approximately $10.5 million, which is subject to
expiration between 2030 and 2043. The Company also had research and development credits of approximately $1.6 million as of December 31, 2023 to
offset future federal and state income taxes, which is subject to expiration at various times through 2043.

Under the provisions of the Internal Revenue Code, the net operating loss and tax credit carryforwards are subject to review and possible adjustment by the
Internal Revenue Service and state tax authorities. Net operating loss and tax credit carryforwards may become subject to an annual limitation in the event
of  certain  cumulative  changes  in  the  ownership  interest  of  significant  shareholders  over  a  three-year  period  in  excess  of  50  percent,  as  defined  under
Sections 382 and 383 of the Internal Revenue Code, respectively, as well as similar state provisions. This could limit the amount of tax attributes that can
be utilized annually to offset future taxable income or tax liabilities. The amount of the annual limitation is determined based on the value of the Company
immediately prior to the ownership change. Subsequent ownership changes may further affect the limitation in future years. The Company has completed
several financings since its inception which it believes has resulted in changes in control as defined by Sections 382 and 383 of the Internal Revenue Code.

Management of the Company evaluated the positive and negative evidence bearing upon the realizability of its deferred tax assets and determined that it is
more likely than not that the Company will not recognize the benefits of the deferred tax assets. As a result, a full valuation allowance was recorded as of
December  31,  2023  and  2022.  The  valuation  allowance  increased  by  $4.4  million  during  the  year  ended  December  31,  2023,  primarily  due  to  the
capitalization of research and development expenses and increase in loss carryforwards by the Company.

As part of the Tax Cuts and Jobs Act that was enacted in December of 2017, taxpayers are required to capitalize research and development expenses and
amortize them over five years if the expense is incurred in the US and over fifteen years if incurred in a foreign jurisdiction. The effective date for that
provision  is  for  tax  years  beginning  on  or  after  January  1,  2022.  The  capitalization  requirement  increased  deferred  tax  assets  related  to  research  and
development expenses and decreased taxable loss in the current year, both of which were offset by a full valuation allowance.

The Company applies ASC 740, Income Taxes, for the financial statement recognition, measurement, presentation, and disclosure of uncertain tax positions
taken or expected to be taken in income tax returns. Unrecognized tax benefits represent tax positions for which reserves have been established. A full
valuation allowance has been provided against the Company’s deferred tax assets, so that the effect of the unrecognized tax benefits is to reduce the gross
amount of the deferred tax asset and the corresponding valuation allowance.

The Company is currently not under examination by the Internal Revenue Service or any other jurisdictions for any tax years. The Company files income
tax  returns  in  the  United  States  for  federal  and  state  income  taxes.  In  the  normal  course  of  business,  the  Company  is  subject  to  examination  by  tax
authorities in the United States. Since the Company is in a loss carryforward position, the Company is generally subject to U.S. federal and state income tax
examinations by tax authorities for all years for which a loss carryforward is utilized. The Company’s returns remain subject to federal and state audits for
the years 2020 through 2023. However, carryforward attributes from prior years may still be adjusted upon examination by tax authorities if they are used
in an open period.

The Company may from time to time be assessed interest or penalties by major tax jurisdictions. The Company recognizes interest and penalties related to
uncertain tax positions in income tax expense. The Company has not recorded interest or penalties on any unrecognized tax benefits since its inception.

The Company anticipates that the amount of unrecognized tax benefits will not materially change in the next twelve months.

The roll-forward of the Company’s gross uncertain tax positions is as follows:

Balance — January 1, 2022

Additions for current year tax positions

Balance — December 31, 2022

Additions for current year tax positions

Balance — December 31, 2023

F-19

Gross
Uncertain
Tax Position

  $

  $

- 
229 
229 
276 
505 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The Company’s total uncertain tax positions increased during the year ended December 31, 2023 as a result of a reserve established on federal and state
research and development credits generated in the current year. None of the uncertain tax positions, if realized, would affect the Company’s effective tax
rate in future periods due to a valuation allowance provided against the Company’s net deferred tax assets.

13. Net Loss Per Share

Basic and diluted earnings (loss) per share are computed using the two-class method, which is an earnings allocation method that determines earnings (loss)
per share for common shares and participating securities. The participating securities consist of the Company’s Series A Preferred Stock. The undistributed
earnings are allocated between common shares and participating securities as if all earnings had been distributed during the period. In periods of loss, no
allocation is made to the Series A Preferred Stock and diluted net loss per share is the same as basic net loss per share because common stock equivalents
are excluded as their inclusion would be antidilutive.

The following potentially dilutive securities outstanding have been excluded from the computation of diluted weighted-average shares outstanding, because
such securities had an antidilutive impact:

Options to purchase common stock
Warrants to purchase common stock

Total potentially dilutive securities excluded

14. Subsequent Events

Year Ended December 31,
2022
2023

344,306   
1,161,493   
1,505,799   

304,823 
1,284,803 
1,589,626 

The Company has completed an evaluation of all subsequent events after the balance sheet date of December 31, 2023 through the date the consolidated
financial  statements  were  issued  to  ensure  that  the  consolidated  financial  statements  include  appropriate  disclosure  of  events  both  recognized  in  the
consolidated financial statements as of December 31, 2023, and events which occurred subsequently but were not recognized in the consolidated financial
statements.  The  Company  has  concluded  that  no  subsequent  events  have  occurred  that  require  disclosure,  except  as  disclosed  within  the  consolidated
financial statements.

F-20

 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM’S CONSENT

We  consent  to  the  incorporation  by  reference  in  the  Registration  Statement  of  Pulmatrix,  Inc.  on  Form  S-1  (File  Nos.  333-223630,  333-230670,  333-
239431, and 333-230395, and the related registration statement (File No. 333-230714) filed under Rule 462(b)), Forms S-3 (File Nos. 333-242341 and 333-
256502)  and  Forms  S-8  (File  Nos.  333-263957,  333-195737,  333-205752,  333-207002,  333-212547,  333-216628,  333-225627,  333-231935,  and  333-
252439) of our report, dated March 28, 2024 with respect to our audits of the consolidated financial statements of Pulmatrix, Inc. as of December 31, 2023
and 2022 and for each of the two years in the period ended December 31, 2023, which report is included in this Annual Report on Form 10-K of Pulmatrix,
Inc. for the year ended December 31, 2023.

Exhibit 23.1

/s/ Marcum LLP
Marcum LLP
New York, NY
March 28, 2024

 
 
 
 
 
 
 
 
 
 
CERTIFICATION PURSUANT TO
SECURITIES EXCHANGE ACT RULES 13a-14 and 15d-14
AS ADOPTED PURSUANT TO
SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.1

I, Teofilo Raad, President and Chief Executive Officer, certify that:

1. I have reviewed this Annual Report on Form 10-K of Pulmatrix, Inc.;

2.  Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.  Based  on  my  knowledge,  the  financial  statements,  and  other  financial  information  included  in  this  report,  fairly  present  in  all  material  respects  the
financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act  Rules  13a-15(e)  and  15d-15(e))  and  internal  control  over  financial  reporting  (as  defined  in  Exchange  Act  Rules  13a-15(f)  and  15d-15(f))  for  the
registrant and have:

a)  Designed  such  disclosure  controls  and  procedures,  or  caused  such  disclosure  controls  and  procedures  to  be  designed  under  our  supervision,  to
ensure  that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

b)  Designed  such  internal  control  over  financial  reporting,  or  caused  such  internal  control  over  financial  reporting  to  be  designed  under  our
supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes
in accordance with generally accepted accounting principles;

c)  Evaluated  the  effectiveness  of  the  registrant’s  disclosure  controls  and  procedures  and  presented  in  this  report  our  conclusions  about  the

effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent
fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect,
the registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the
registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably

likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control

over financial reporting.

Date: March 28, 2024

/s/ Teofilo Raad
Teofilo Raad
President & Chief Executive Officer
(Principal Executive Officer)

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CERTIFICATION PURSUANT TO
SECURITIES EXCHANGE ACT RULES 13a-14 and 15d-14
AS ADOPTED PURSUANT TO
SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.2

I, Peter Ludlum, Interim Chief Financial Officer, certify that:

1. I have reviewed this Annual Report on Form 10-K of Pulmatrix, Inc.;

2.  Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact  necessary  to  make  the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.  Based  on  my  knowledge,  the  financial  statements,  and  other  financial  information  included  in  this  report,  fairly  present  in  all  material  respects  the
financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange
Act  Rules  13a-15(e)  and  15d-15(e))  and  internal  control  over  financial  reporting  (as  defined  in  Exchange  Act  Rules  13a-15(f)  and  15d-15(f))  for  the
registrant and have:

a)  Designed  such  disclosure  controls  and  procedures,  or  caused  such  disclosure  controls  and  procedures  to  be  designed  under  our  supervision,  to
ensure  that  material  information  relating  to  the  registrant,  including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

b)  Designed  such  internal  control  over  financial  reporting,  or  caused  such  internal  control  over  financial  reporting  to  be  designed  under  our
supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes
in accordance with generally accepted accounting principles;

c)  Evaluated  the  effectiveness  of  the  registrant’s  disclosure  controls  and  procedures  and  presented  in  this  report  our  conclusions  about  the

effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent
fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect,
the registrant’s internal control over financial reporting; and

5. The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over  financial  reporting,  to  the
registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably

likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control

over financial reporting.

Date: March 28, 2024

/s/ Peter Ludlum
Peter Ludlum
Interim Chief Financial Officer
(Principal Financial and Accounting Officer)

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.1

In  connection  with  the  Annual  Report  on  Form  10-K  of  Pulmatrix,  Inc.  (the  “Company”)  for  the  period  ended  December  31,  2023  as  filed  with  the
Securities and Exchange Commission on the date hereof (the “Report”), I, the undersigned, Teofilo Raad, as the President & Chief Executive Officer of the
Company, do hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of
my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: March 28, 2024

/s/ Teofilo Raad
Teofilo Raad
President & Chief Executive Officer
(Principal Executive Officer)

The foregoing certification is being furnished solely pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350,
Chapter 63 of Title 18, United States Code) and is not being filed as part of the Form 10-K or as a separate disclosure document.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.2

In  connection  with  the  Annual  Report  on  Form  10-K  of  Pulmatrix,  Inc.  (the  “Company”)  for  the  period  ended  December  31,  2023  as  filed  with  the
Securities and Exchange Commission on the date hereof (the “Report”), I, the undersigned, Peter Ludlum, as the Interim Chief Financial Officer of the
Company, do hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of
my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: March 28, 2024

/s/ Peter Ludlum
Peter Ludlum
Interim Chief Financial Officer
(Principal Financial and Accounting Officer)

The foregoing certification is being furnished solely pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350,
Chapter 63 of Title 18, United States Code) and is not being filed as part of the Form 10-K or as a separate disclosure document.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PULMATRIX, INC.
Compensation Recovery Policy

Exhibit 97.01

This  Compensation  Recovery  Policy  (this  “Policy”)  of  Pulmatrix,  Inc.  (the  “Company”)  is  hereby  adopted  as  of  November  30,  2023  in

compliance with Rule 5608 of the Nasdaq Rules. Certain terms used herein shall have the meanings set forth in “Section 3. Definitions” below.

Section 1. Recovery Requirement

Subject to Section 4 of this Policy, in the event the Company is required to prepare an Accounting Restatement, then the Board and Committee hereby
direct the Company, to the fullest extent permitted by governing law, to recover from each Executive Officer the amount, if any, of Erroneously Awarded
Compensation  received  by  such  Executive  Officer,  with  such  recovery  occurring  reasonably  promptly  after  the  Restatement  Date  relating  to  such
Accounting Restatement.

The Board or the Committee may effect recovery in any manner consistent with applicable law including, but not limited to, (a) seeking reimbursement of
all  or  part  of  Erroneously  Awarded  Compensation  previously  received  by  an  Executive  Officer,  together  with  any  expenses  reasonably  incurred  as
described  below  in  connection  with  the  recovery  of  such  Erroneously  Awarded  Compensation,  (b)  cancelling  prior  grants  of  Incentive-Based
Compensation,  whether  vested  or  unvested,  restricted  or  deferred,  or  paid  or  unpaid,  and  through  the  forfeiture  of  previously  vested  equity  awards,  (c)
cancelling  or  setting-off  against  planned  future  grants  of  Incentive-Based  Compensation,  (d)  deducting  all  or  any  portion  of  such  Erroneously  Awarded
Compensation from any other remuneration payable by the Company to such Executive Officer, and (e) any other method authorized by applicable law or
contract.

To the extent that an Executive Officer fails to repay all Erroneously Awarded Compensation to the Company when due, the Company shall take all actions
reasonable and appropriate to recover such Erroneously Awarded Compensation from the applicable Executive Officer. The applicable Executive Officer
shall  be  required  to  reimburse  the  Company  for  any  and  all  expenses  reasonably  incurred  (including  legal  fees)  by  the  Company  in  recovering  such
Erroneously Awarded Compensation in accordance with the immediately preceding sentence.

The Company’s right to recovery pursuant to this Policy is not dependent on if or when the Accounting Restatement is filed with the SEC.

Section 2.

Incentive-Based Compensation Subject to this Policy

This Policy applies to all Incentive-Based Compensation received by each Executive Officer on or after the Effective Date:

(i) if such Incentive-Based Compensation was received on and after the date such person became an Executive Officer of the Company;

(ii) if such Executive Officer served as an Executive Officer at any time during the performance period for such Incentive-Based Compensation;

(iii) while the Company has a class of securities listed on a national securities exchange or a national securities association; and

(iv) during the three completed fiscal years immediately preceding the date that the Company is required to prepare an Accounting Restatement
(including any transition period that results from a change in the Company’s fiscal year that is within or immediately following those three completed fiscal
years; provided that a transition period of nine to 12 months is deemed to be a completed fiscal year).

This Policy shall apply and govern Incentive-Based Compensation received by any Executive Officer, notwithstanding any contrary or supplemental term
or  condition  in  any  document,  plan  or  agreement  including,  without  limitation,  any  employment  contract,  indemnification  agreement,  equity  or  bonus
agreement, or equity or bonus plan document.

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Section 3. Definitions:

For purposes of this Policy, the following terms have the meanings set forth below:

● “Accounting Restatement”  means  an  accounting  restatement  due  to  the  material  noncompliance  of  the  Company  with  any  financial  reporting
requirement  under  the  securities  laws,  including  any  required  accounting  restatement  to  correct  an  error  (i)  in  previously  issued  financial
statements that is material to the previously issued financial statements (commonly referred to as a “Big R” restatement), or (ii) that would result
in a material misstatement if the error were corrected in the current period or left uncorrected in the current period (commonly referred to as a
“little r” restatement).

● “Board” means the Board of Directors of the Company.

● “Committee” means the Compensation Committee of the Board.

● “Effective Date” means October 2, 2023.

● “Erroneously Awarded Compensation” means the amount of Incentive-Based Compensation received that exceeds the amount of Incentive-Based
Compensation  that  otherwise  would  have  been  received  by  the  Executive  Officer  had  it  been  determined  based  on  the  restated  amounts  in  the
Accounting  Restatement  (computed  without  regard  to  any  taxes  paid).  For  Incentive-Based  Compensation  based  on  stock  price  or  total
shareholder return (“TSR”), where the amount of Erroneously Awarded Compensation is not subject to mathematical recalculation directly from
the information in the Accounting Restatement, the Company shall: (i) base the calculation of the amount on a reasonable estimate of the effect of
the  Accounting  Restatement  on  the  stock  price  or  TSR  upon  which  the  Incentive-Based  Compensation  received  was  based;  and  (ii)  retain
documentation of the determination of that reasonable estimate and provide such documentation to The Nasdaq Stock Market LLC (“Nasdaq”) or,
if a class of securities of the Company is no longer listed on Nasdaq, such other national securities exchange or national securities association on
which a class of the Company’s securities is then listed for trading.

● “Executive Officer”  means  the  Company’s  current  and  former  executive  officers,  as  determined  by  the  Board  or  the  Committee  in accordance

with the definition of executive officer set forth in Rule 5608(d) of the Nasdaq Rules.

● “Financial  Reporting  Measures”  means  measures  that  are  determined  and  presented  in  accordance  with  the  accounting  principles  used  in
preparing the Company’s financial statements, and any measures that are derived wholly or in part from such measures. Stock price and TSR are
also Financial Reporting Measures. A Financial Reporting Measure need not be presented within the Company’s financial statements or included
in any of the Company’s filings with the SEC.

● “Incentive-Based Compensation”  means  any  compensation  that  is  granted,  earned,  or  vested  based  wholly  or  in  part  upon  the  attainment  of  a
Financial Reporting Measure (including, without limitation, any cash bonuses, performance awards, restricted stock awards or restricted stock unit
awards that are granted, earned or vest based on achievement of a Financial Reporting Measure). The following do not constitute Incentive-Based
Compensation  for  purposes  of  this  Policy:  (a)  equity  awards  for  which  (1)  the  grant  is  not  contingent  upon  achieving  any  Financial  Reporting
Measure performance goals and (2) vesting is contingent solely upon completion of a specified employment period and/or attaining one or more
nonfinancial  reporting  measures,  and  (b)  bonus  awards  that  are  discretionary  or  based  on  subjective  goals  or  goals  unrelated  to  Financial
Reporting Measures.

● “Nasdaq Rules” means the listing rules of The Nasdaq Stock Market LLC.

● “received”: An Executive Officer shall be deemed to have “received” Incentive-Based Compensation in the Company’s fiscal period during which
the Financial Reporting Measure specified in the Incentive-Based Compensation award is attained, even if the payment or grant of the Incentive-
Based Compensation occurs after the end of that fiscal period.

● “Restatement Date” means the earlier to occur of (i) the date the Board or the Committee (or an officer or officers of the Company authorized to
take  such  action  if  Board  action  is  not  required)  concludes,  or  reasonably  should  have  concluded,  that  the  Company  is  required  to  prepare  an
Accounting  Restatement  and  (ii)  the  date  a  court,  regulator,  or  other  legally  authorized  body  directs  the  Company  to  prepare  an  Accounting
Restatement.

● “SEC” means the U.S. Securities and Exchange Commission.

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Section 4. Exceptions to Recovery

Notwithstanding the foregoing, the Company is not required to recover Erroneously Awarded Compensation to the extent that the Committee, or in the
absence of such committee, a majority of the independent directors serving on the Board has made a determination that recovery would be impracticable
and that:

(i)

(ii)

after the Company has made a reasonable attempt to recover such Erroneously Awarded Compensation (which has been documented and such
documentation has been provided to Nasdaq), the direct expense paid to a third party to assist in enforcing this Policy would exceed the amount to
be recovered;

recovery would violate one or more laws of the home country that were adopted prior to November 28, 2022 (which determination shall be made
after the Company obtains an opinion of home country counsel, acceptable to Nasdaq, that recovery would result in a such a violation, and a copy
of such opinion is provided to Nasdaq);

(iii)

recovery would likely cause an otherwise tax-qualified retirement plan, under which benefits are broadly available to employees of the Company
and its subsidiaries, to fail to meet the requirements of 26 U.S.C. 401(a)(13) or 26 U.S.C. 411(a) and regulations thereunder; or

(iv)

any other exception permitted under Rule 5608(b)(1)(iv) of the Nasdaq Rules.

Section 5. Right to Adjust Unvested Incentive-Based Compensation

If the Board or the Committee, in its sole discretion, determines that the performance metrics of outstanding but unvested Incentive-Based Compensation
issued after the Effective Date were established using Financial Reporting Measures that were impacted by the Accounting Restatement, the Board or the
Committee, in its sole discretion, may adjust such Financial Reporting Measures or modify such Incentive-Based Compensation, in such manner as the
Board or the Committee determines, in its sole discretion, to be appropriate.

Section 6. No Right to Indemnification or Insurance

The Company shall not indemnify any Executive Officer against the loss of Erroneously Awarded Compensation or losses arising from any claims relating
to the Company’s enforcement of this Policy. In addition, the Company shall not pay, or reimburse any Executive Officer for, any premiums for a third-
party insurance policy purchased by the Executive Officer or any other party that would fund any of the Executive Officer’s potential recovery obligations
under this Policy.

Section 7.

Plan Documents and Award Agreements

The Board further directs the Company to include clawback language in each of the Company’s incentive compensation plans and any award agreements
such that each individual who receives Incentive-Based Compensation under those plans understands and agrees that all or any portion of such Incentive-
Based Compensation may be subject to recovery by the Company, and such individual may be required to repay all or any portion of such Incentive-Based
Compensation, if (i) recovery of such Incentive-Based Compensation is required by this Policy, (ii) such Incentive-Based Compensation is determined to be
based on materially inaccurate financial and/or performance information (which includes, but is not limited to, statements of earnings, revenues or gains),
or (iii) repayment of such Incentive-Based Compensation is required by applicable federal or state securities laws.

Section 8.

Interpretation and Amendment of this Policy

The  Board  or  the  Committee,  in  its  discretion,  shall  have  the  sole  authority  to  interpret  and  make  any  determinations  regarding  this  Policy.  Any
interpretation, determination, or other action made or taken by the Committee (or, if applicable, the Board) shall be final, binding, and conclusive on all
interested  parties.  The  determination  of  the  Committee  (or,  if  applicable,  the  Board)  need  not  be  uniform  with  respect  to  one  or  more  officers  of  the
Company. The Board or the Committee may amend this Policy from time to time in its discretion and shall amend the Policy to comply with any rules or
standards adopted by Nasdaq or any national securities exchange on which the Company’s securities are then listed.

Section 9.

Filing Requirement

The  Company  shall  file  this  Policy  as  an  exhibit  to  its  Annual  Report  on  Form  10-K  and  make  such  other  disclosures  with  respect  to  this  Policy  in
accordance with the requirements of the federal securities laws, including the disclosure required by applicable SEC rules and regulations.

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Section 10. Other Recoupment Rights

The Company intends that this Policy will be applied to the fullest extent of the law. Any right of recoupment under this Policy is in addition to, and not in
lieu of, any other remedies or rights of recoupment that may be available to the Company pursuant to the terms of any similar policy in any employment
agreement, equity award agreement, or similar agreement and any other remedies available to the Company under applicable law. Without by implication
limiting  the  foregoing,  following  a  restatement  of  the  Company’s  financial  statements,  the  Company  also  shall  be  entitled  to  recover  any  compensation
received by the Chief Executive Officer and Chief Financial Officer that is required to be recovered by Section 304 of the Sarbanes-Oxley Act of 2002.

Section 11. Successors

This Policy shall be binding and enforceable against all Executive Officers and their respective beneficiaries, heirs, executors, administrators or other legal
representatives.

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