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Regulus Therapeutics Inc

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FY2023 Annual Report · Regulus Therapeutics Inc
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(Mark One)

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
     __________________________________________________________  

FORM 10-K
     __________________________________________________________ 

☒

☐

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

FOR THE FISCAL YEAR ENDED DECEMBER 31, 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: 001-35670
          ___________________________________________________________ 

Regulus Therapeutics Inc.

(Exact name of registrant as specified in its charter)
          ___________________________________________________________ 

Delaware
(State or Other Jurisdiction of
Incorporation or Organization)

4224 Campus Point Court, Suite 210
San Diego
CA
(Address of Principal Executive Offices)

26-4738379
(I.R.S. Employer
Identification No.)

92121
(Zip Code)

(858) 202-6300
(Registrant’s Telephone Number, Including Area Code)
Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class

Common Stock, par value $0.001 per share

Trading Symbol(s)

RGLS

Name of Each Exchange on Which Registered

The Nasdaq Stock Market LLC

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

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

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

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

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

 
 
 
 
 
 
 
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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 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 Securities Exchange Act of 1934).    Yes ☐   No  ☒

As of June 30, 2023, the last business day of the registrant’s most recently completed second fiscal quarter, the aggregate market value of the registrant’s common stock held by
non-affiliates of the registrant was approximately $27.4 million, based on the closing price of the registrant’s common stock on the Nasdaq Stock Market on June 30, 2023 of
$1.47 per share.

The number of outstanding shares of the registrant’s common stock, par value $0.001 per share, as of March 15, 2024 was 65,465,251.

Portions of the registrant’s definitive proxy statement to be filed with the Securities and Exchange Commission pursuant on Schedule 14A in connection with the
registrant’s 2024 Annual Meeting of Stockholders, which will be filed subsequent to the date hereof, are incorporated by reference into Part III of this Form 10-K. Such proxy
statement will be filed with the Securities and Exchange Commission no later than April 29, 2024.

DOCUMENTS INCORPORATED BY REFERENCE

 
 
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REGULUS THERAPEUTICS INC.
TABLE OF CONTENTS

PART I
Item 1
Item 1A
Item 1B
Item 1C
Item 2
Item 3
Item 4

PART II
Item 5
Item 6
Item 7
Item 7A
Item 8
Item 9
Item 9A
Item 9B
Item 9C

PART III
Item 10
Item 11
Item 12
Item 13
Item 14

PART IV
Item 15
Item 16

Signatures

Business
Risk Factors
Unresolved Staff Comments
Cybersecurity
Properties
Legal Proceedings
Mine Safety Disclosures

Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
[Reserved]
Management’s Discussion and Analysis of Financial Condition and Results of Operations
Quantitative and Qualitative Disclosures About Market Risk
Financial Statements and Supplementary Data
Changes in and Disagreements With Accountants on Accounting and Financial Disclosure
Controls and Procedures
Other Information
Disclosure Regarding Foreign Jurisdiction that Prevent Inspections

Directors, Executive Officers and Corporate Governance
Executive Compensation
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
Certain Relationships and Related Transactions, and Director Independence
Principal Accounting Fees and Services

Exhibits, Financial Statement Schedules
Form 10-K Summary

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The Regulus Therapeutics logo is a trademark of Regulus Therapeutics Inc. We use “Regulus Therapeutics” as a trademark in the United States and other

countries. We have registered this trademark in the United States, the European Union ("EU") and Switzerland. All other product and company names are
trademarks of their respective companies.

  
 
 
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Risk Factor Summary

Below is a summary of the material factors that make an investment in our common stock speculative or risky. This summary does not address all of the

risks that we face. Additional discussion of the risks summarized in this risk factor summary, and other risks that we face, can be found below under the heading
“Risk Factors” under Part I, Item 1A of this Annual Report and should be carefully considered, together with other information in this Annual Report before
making investment decisions regarding our common stock.

•

The approach we are taking to discover and develop drugs is novel and may never lead to marketable products.

• We may not be successful in our efforts to identify or discover potential product candidates.

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Preclinical and clinical studies of our product candidates may not be successful. If we are unable to generate successful results from our preclinical and
clinical studies of our product candidates, or we experience significant delays in doing so, our business may be materially harmed.

If clinical trials of our product candidates fail to demonstrate safety and efficacy to the satisfaction of regulatory authorities or do not otherwise
produce positive results, we may incur additional costs or experience delays in completing, or ultimately be unable to complete, the development and
commercialization of our product candidates.

• Any of our product candidates may cause adverse effects or have other properties that could delay or prevent their regulatory approval or limit the

scope of any approved label or market acceptance.

•

Even if we complete the necessary preclinical studies and clinical trials, we cannot predict whether or when we will obtain regulatory approval to
commercialize a product candidate and we cannot, therefore, predict the timing of any revenue from a future product.

• We have never generated any revenue from product sales and may never be profitable.

• We will need to raise additional capital to develop our product candidates and implement our operating plans, and if we are unable to do so when

needed, we will not be able to complete the development and commercialization of our product candidates.

•

Payments under the instruments governing our indebtedness may reduce our working capital. In addition, a default under our loan and security
agreement could cause a material adverse effect on our financial position.

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

• We will depend upon collaborations for the development and eventual commercialization of certain microRNA product candidates. If these

collaborations are unsuccessful or are terminated, we may be unable to commercialize certain product candidates and we may be unable to generate
revenues from our development programs.

• We rely on limited sources of supply for the drug substance of product candidates and any disruption in the chain of supply may cause a delay in

developing and commercializing these product candidates.

• Manufacturing issues may arise that could increase product and regulatory approval costs or delay commercialization.

• We rely on third parties to conduct, supervise and monitor our clinical trials, and if those third parties perform in an unsatisfactory manner, it may harm

our business.

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•

If we are unable to obtain or protect intellectual property rights related to our future products and product candidates, we may not be able to compete
effectively in our markets.

• We are subject to stringent and evolving laws, regulations, and rules, contractual obligations, industry standards, policies and other obligations related
to data privacy and security. Actual or perceived failure by us or the third-party service providers upon which we rely to comply with such obligations
could lead to regulatory investigations or actions; litigation (including class actions); fines and penalties; disruptions of our business operations;
reputational harm; loss of revenue or profits; and other adverse business consequences.

• We are subject to stringent and changing obligations related to data privacy and security. Actual or perceived failure by us or the third-party service
providers upon which we rely to comply with such obligations could lead to regulatory investigations or actions; litigation; fines and penalties;
disruptions of our business operations; reputational harm; loss of revenue or profits; and other adverse business consequences.

• We face significant competition from other biotechnology and pharmaceutical companies and our operating results will suffer if we fail to compete

effectively.

• Our business could be adversely affected by the effects of health pandemics or epidemics in regions where we or third parties on which we rely have
significant manufacturing facilities, concentrations of clinical trial sites or other business operations, or materially affect our operations globally,
including at our headquarters in San Diego, and at our clinical trial sites, as well as the business or operations of our collaborators, manufacturers,
contract research organizations ("CROs") or other third parties with whom we conduct business.

•

The market price of our common stock may be highly volatile.

Forward-Looking Statements

PART I

This Annual Report on Form 10-K may contain “forward-looking statements” within the meaning of the federal securities laws made pursuant to the safe

harbor provisions of the Private Securities Litigation Reform Act of 1995. Our actual results could differ materially from those anticipated in these forward-
looking statements as a result of various factors, including those set forth below under Part I, Item 1A, “Risk Factors” in this Annual Report. Except as required
by law, we assume no obligation to update these forward-looking statements, whether as a result of new information, future events or otherwise. These
statements, which represent our current expectations or beliefs concerning various future events, may contain words such as “may,” “will,” “expect,”
“anticipate,” “intend,” “plan,” “believe,” “estimate” or other words indicating future results, though not all forward-looking statements necessarily contain these
identifying words. Such statements may include, but are not limited to, statements concerning the following:

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the initiation, cost, timing, progress and results of, and our expected ability to undertake certain activities and accomplish certain goals with respect to
our research and development activities, preclinical studies and clinical trials;

our ability to obtain and maintain regulatory approval of our product candidates, and any related restrictions, limitations, and/or warnings in the label
of an approved product candidate;

our ability to obtain funding for our operations;

our plans to research, develop and commercialize our product candidates;

our ability to attract collaborators with relevant development, regulatory and commercialization expertise;

future activities to be undertaken by any third parties with whom we collaborate or otherwise contract;

our ability to obtain and maintain intellectual property protection for our product candidates;

the size and growth potential of the markets for our product candidates, and our ability to serve those markets;

our ability to successfully commercialize, and our expectations regarding future therapeutic and commercial potential with respect to our product
candidates;

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the rate and degree of market acceptance of our product candidates;

our ability to develop sales and marketing capabilities, whether alone or with potential future collaborators;

regulatory developments in the United States and foreign countries;

the performance of our third-party suppliers and manufacturers;

the success of competing therapies that are or may become available;

the loss of key scientific or management personnel;

our ability to successfully secure and deploy capital;

our ability to satisfy our debt obligations;

the accuracy of our estimates regarding future expenses, future revenues, capital requirements and need for additional financing; and

the risks and other forward-looking statements described under the caption “Risk Factors” under Part I, Item 1A of this Annual Report on Form 10-K.

In addition, statements that “we believe” and similar statements reflect our beliefs and opinions on the relevant subject. These statements are based upon
information available to us as of the date of this report, and while we believe such information forms a reasonable basis for such statements, such information
may be limited or incomplete, and our statements should not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all potentially
available relevant information. These statements are inherently uncertain and investors are cautioned not to unduly rely upon these statements.

Item 1.    Business

We are a clinical-stage biopharmaceutical company focused on discovering and developing first-in-class drugs targeting microRNAs to treat diseases with

significant unmet medical need. We were formed in 2007 when Alnylam Pharmaceuticals, Inc. ("Alnylam") and Ionis Pharmaceuticals, Inc. ("Ionis")
contributed significant intellectual property, know-how and financial and human capital to pursue the development of drugs targeting microRNAs pursuant to a
license and collaboration agreement. We are currently focused on orphan kidney diseases where microRNA genetic drivers are implicated and there are clear
unmet medical needs. Our product candidate, RGLS8429, an anti-miR next generation oligonucleotide targeting miR-17 for the treatment of autosomal
dominant polycystic kidney disease ("ADPKD"), is in Phase 1b clinical development. In June 2022, the U.S. Food and Drug Administration ("FDA") granted
orphan drug designation to RGLS8429 for the treatment of ADPKD.

In addition to this program, we continue to advance and expand our internal discovery pipeline to identify potential product candidates.

microRNAs are naturally occurring ribonucleic acid ("RNA") molecules that play a critical role in regulating key biological pathways. Scientific research
has shown that an imbalance, or dysregulation, of microRNAs is directly linked to many diseases. Furthermore, many different infectious pathogens interact and
bind to host microRNA to survive. To date, over 500 microRNAs have been identified in humans, each of which can bind to multiple messenger RNAs that
control key aspects of cell biology. Since many diseases are multi-factorial, involving multiple targets and pathways, the ability to modulate multiple pathways
by targeting a single microRNA provides a new therapeutic approach for treating complex diseases.

RNA plays an essential role in the process used by cells to encode and translate genetic information from deoxyribonucleic acid ("DNA") to proteins.
RNA is comprised of subunits called nucleotides and is synthesized from a DNA template by a process known as transcription. Transcription generates different
types of RNA, including messenger RNAs that carry the information for proteins in the sequence of their nucleotides. In contrast, microRNAs are RNAs that do
not code for proteins but rather are responsible for regulating gene expression by modulating the translation and decay of target messenger RNAs. By
interacting with many messenger RNAs, a single microRNA can regulate the expression of multiple genes involved in the normal function of a biological
pathway. Many pathogens, including viruses, bacteria and parasites, also use host microRNAs to regulate the cellular environment for survival. In some
instances, the host microRNAs are essential for the replication and/or survival of the pathogen.

We believe that microRNA therapeutics have the potential to become a new and major class of drugs with broad therapeutic application for the following

reasons:

• microRNAs play a critical role in regulating biological pathways by controlling the translation of many target genes;

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• microRNA therapeutics regulate disease pathways which may result in more effective treatment of complex multi-factorial diseases;

• many human pathogens, including viruses, bacteria and parasites, use microRNAs (host and pathogen encoded) to enable their replication and suppression

of host immune responses; and

• microRNA therapeutics may be synergistic with other therapies because of their different mechanism of action.

We have assembled significant expertise in the microRNA field, including expertise in microRNA biology and oligonucleotide chemistry, a broad

intellectual property estate, relationships with key opinion leaders and a disciplined drug discovery and development process. We are using our microRNA
expertise to develop chemically modified, single-stranded oligonucleotides that we call anti-miRs to modulate microRNAs and address underlying disease. We
believe microRNAs may play a critical role in complex disease and that targeting them with anti-miRs may become a source of a new and major class of drugs
with broad therapeutic application, much like small molecules, biologics and monoclonal antibodies.

Since our inception through December 31, 2023, we have received $436.1 million from the sale of our equity and convertible debt securities,
$101.8 million from collaborations, principally from upfront payments, research funding and preclinical and clinical milestones, and $19.8 million in net
proceeds from our Term Loan (as defined below). As of December 31, 2023, we had cash and cash equivalents of $23.8 million.

Our strategy

The key elements of our strategy are to (i) build a meaningful clinical portfolio by advancing our current clinical program and advancing our preclinical
programs into clinical development; (ii) focus our resources on developing drugs for indications that represent significant unmet medical needs and where the
development activities and commercial opportunities are appropriate for our size and financial resources; (iii) selectively form strategic collaborations to
augment our expertise and accelerate development and commercialization; (iv) develop microRNA biomarkers to support our therapeutic product candidates;
and (v) maintain our scientific and intellectual leadership in the microRNA field.

Product Candidate

RGLS8429: For Autosomal Dominant Polycystic Kidney Disease

ADPKD is among the most common human monogenic disorders and a leading cause of end-stage renal disease. It is caused by mutations in the PKD1 or
PKD2 genes, that leads to reduced levels of their encoded-proteins polycystin-1 (PC1) and/or polycystin-2 (PC2) causing formation of multiple fluid filled cysts
primarily in the kidneys, and to a lesser extent in the liver and other organs. Typical symptoms include flank pain, hematuria, proteinuria, renal colic, urinary
tract infection, hypertension, and intracranial aneurysms. Excessive kidney cyst cell proliferation, a central pathological feature, ultimately leads to end-stage
renal disease in approximately 50% of ADPKD patients by age 60. Approximately 160,000 individuals are diagnosed with the disease in the United States
alone, with an estimated global prevalence of 4 to 7 million.

RGLS8429 is a novel, next generation oligonucleotide for the treatment of ADPKD designed to inhibit miR-17 and to preferentially target the kidney.
Administration of RGLS8429 has shown robust data in preclinical models, where clear improvements in kidney function, size, and other measures of disease
severity have been demonstrated along with a superior pharmacologic profile in preclinical studies compared to Regulus' first-generation compound,
RGLS4326.

In May 2022, the FDA accepted our IND for RGLS8429 for the treatment of ADPKD. The Phase 1 single-ascending dose ("SAD") study in healthy volunteers
to assess safety, tolerability and PK of RGLS8429 has been completed. RGLS8429 was well-tolerated with no serious adverse events reported, and plasma
exposure was approximately linear across the four doses tested and is similar to the PK data from the first-generation compound. Enrollment and dosing is
ongoing in our Phase 1b double-blind, placebo-controlled multiple-ascending dose and an open label fixed dose study (“MAD”) in adult patients with ADPKD
to assess safety, tolerability and PK of RGLS8429, and to evaluate the efficacy of RGLS8429 treatment across three different dose levels, including changes in
polycystins, cystic kidney volume (htTKV), and overall kidney function. The protocol was amended to include a fourth cohort of subjects who will receive an
open label fixed dose of RGLS8429 to compare biomarker and safety data to the weight-based dosing.

The first cohort was dosed at 1 mg/kg of RGLS8429 or placebo every other week for three months. In September 2023, we announced positive top-line data
from the first cohort of RGLS8429-treated ADPKD patients. Increases in both PC1 and PC2 biomarkers were observed. Statistically significant increases in
mean PC1 levels were observed at Day 85 and Day 86 (n=9) compared to baseline (36%-41%). Numeric increases in PC2 were observed during the treatment
period, although not statistically significant. These data are consistent with what was observed with our first-generation compound, RGLS4326,

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which showed a significant dose response between 0.3mg/kg and 1mg/kg of RGLS4326. Furthermore, the correlation between PK and urinary PC1 response at
1mg/kg is comparable between RGLS4326 and RGLS8429. RGLS8429 was well tolerated by all nine subjects receiving active drug with no safety findings.

In March 2024, we announced positive topline results from the second cohort of patients in our Phase 1b MAD study of RGLS8429 for the treatment of
ADPKD. In the second cohort, 14 patients were randomized 3:1 to receive either 2 mg/kg of RGLS8429 or placebo every other week for three months.
RGLS8429 was well tolerated with no safety findings of concern. Greater biological activity of RGLS8429 was observed at 2mg/kg based on urinary polycystin
levels compared to 1mg/kg and placebo, which was most evident after 3 months of dosing. Exploratory results of imaging-based biomarkers were encouraging,
with 3 patients with the highest increases in PC1 and PC2 having reductions in height-adjusted total kidney volume ("htTKV") >4%, with corresponding
reductions in total kidney cyst volume ("TKCV"). These data suggest that targeting miR-17 may have a potential impact on htTKV and TKCV in patients with
ADPKD, which the Company will further explore at higher doses in cohorts 3 and 4.

The ongoing Phase 1b study is evaluating RGLS8429 dosing at 3 mg/kg in cohort 3, and will explore a 300 mg fixed dose in cohort 4 that will provide higher
exposure in a larger number of patients based on anticipated body weight. Based on the results from the second cohort, we plan to amend the protocol to
increase the sample size to up to 30 patients in cohort 4. In addition to PC1 and PC2 and safety, imaging biomarkers will also be evaluated.

In October 2023, we announced that we had reviewed all available safety data and have advanced to the third cohort of patients in the MAD study. In January
2024, we announced that we had completed enrollment of the third cohort of patients, with top-line data anticipated in mid-2024. We also completed the 27-
week chronic mouse toxicity study for RGLS8429. No RGLS8429-related toxicity, including CNS effects, was observed at any dose level up to the top dose of
300 mg/kg administered every other week.

We recently held a Type D meeting with the FDA to discuss the accelerated approval pathway. The meeting was constructive and confirmed the potential for an
accelerated approval pathway based on a single pivotal Phase 2 study of RGLS8429 for the treatment of ADPKD.

Preclinical Pipeline

A major focus of our preclinical research has historically targeted dysregulated microRNAs implicated in diseases of high unmet medical need where we know
we can effectively deliver to the target tissue or organ, such as the liver, kidney and central nervous system ("CNS"). Furthermore, we are investigating the
potential for target organ-selective delivery strategies.

Our microRNA product platform

We believe we are the leading company in the field of microRNA therapeutics and are uniquely positioned to leverage oligonucleotide technologies

developed by us and our founding companies.

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We view the following as providing a competitive advantage for our microRNA product platform:

a mature platform selectively producing multiple development candidates advancing to the clinic;

scientific advisors who are pioneers in the microRNA field;

exclusive access to proven RNA therapeutic technologies through our founding companies, such as GalNac conjugation and the corresponding
manufacturing rights licensed to us from Alnylam;

a comprehensive microRNA intellectual property estate with patents and patent applications covering compositions and therapeutic uses related to
microRNA and microRNA drug products, as well as access to numerous patents and patent applications relating to RNA technologies, including patent
and patent applications relating to chemical modification of oligonucleotides that are useful for microRNA therapeutics; and

numerous academic collaborations that help us identify new microRNA targets and support our early stage discovery efforts.

The disciplined approach we take for the discovery and development of microRNA therapeutics is as important as the assets assembled to execute our

plans and is based on the following four steps:

Step 1 - Evaluation of microRNA therapeutic opportunities

The initiation of our microRNA discovery and development efforts is based on rigorous scientific and business criteria, including:

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existence of significant scientific evidence to support the role of a specific microRNA in a disease;

availability of predictive preclinical disease models to test our microRNA development candidates;

ability to effectively deliver anti-miRs or miR mimics to the diseased cells or tissues; and

existence of a significant unmet medical need and commercial opportunity.

Step 2 - Identification of microRNA targets

We identify microRNA targets through bioinformatic analysis of public and proprietary microRNA expression profiling data sets from samples of diseased

human tissues. The analysis of such data sets can immediately highlight a potential role for specific microRNAs in the disease being studied. Further
investigation of animal models that are predictive of human diseases in which those same microRNAs are also dysregulated provides additional data to support
a new program. We have applied this strategy successfully in our existing programs and we believe that this approach will continue to help us identify clinically
relevant microRNA targets.

Step 3 - Validation of microRNA targets

Our validation strategy is based on two distinct steps. First, using genetic tools, we determine whether up-regulation, or overproduction, of the microRNA
in healthy animals can create the specific disease state and inhibition of the microRNA can lead to a therapeutic benefit. Second, using animal models predictive
of human diseases, we determine whether pharmacological modulation of the up-regulated microRNA target with our anti-miRs can also lead to a therapeutic
benefit. This validation process enables us to prioritize microRNA targets that appear to be key drivers of disease and not simply correlating markers.

Step 4 - Optimization of microRNA development candidates

We have developed a proprietary process that allows us to rapidly generate an optimized development candidate. Unlike traditional drug classes, such as

small molecules, in which thousands of compounds must be screened to identify prospective leads, the fact that anti-miRs are complementary to (thereby
pairing with) the target microRNA allows for a more efficient rational design process. The optimization process incorporates our extensive knowledge base
around oligonucleotide chemistry and anti-miR design to efficiently synthesize a starting pool of rationally designed anti-miRs to be evaluated in a series of
proven assays and models. We are able to enhance our anti-miRs for distribution in certain tissues, such as the liver and kidney, where the specific microRNA
target is causing disease.

Our development candidates

We are developing single-stranded oligonucleotides, which are chemically synthesized chains of nucleotides that are complementary to (thereby pairing

with) the target microRNA. We incorporate proprietary chemical modifications to enhance drug properties such as potency, stability and tissue distribution. We
refer to these chemically modified oligonucleotides as anti-miRs. Each anti-miR is designed to bind with and inhibit a specific microRNA target that is up-
regulated in a cell and that is involved in the disease state. In binding to the microRNA, anti-miRs correct the dysregulation and return diseased cells to their
healthy state.

We have identified and validated several microRNA targets across a number of disease categories and are working independently to optimize anti-miR

development candidates. We intend to pursue a balanced approach between product candidates that we develop ourselves and those that we develop with
partners. We intend to focus our own resources on proprietary product opportunities in therapeutic areas where development and commercialization activities
are appropriate for our size and financial resources. In therapeutic areas where costs are more significant, development timelines are longer or markets are too
large for our capabilities, we may seek to secure partners with requisite expertise and resources.

PIPELINE

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Our Intellectual Property and Technology Licenses

Intellectual property

We strive to protect and enhance the proprietary technologies that we believe are important to our business, including seeking and maintaining patents

intended to cover our products and compositions, their methods of use and any other inventions that are important to the development of our business. We also
rely on trade secrets to protect aspects of our business that are not amenable to, or that we do not consider appropriate for, patent protection. Our objective is to
continue to expand our intellectual property estate through our multiple layer approach in order to protect our microRNA therapeutics and to maintain our
leading position in the microRNA therapeutics field.

We believe that we have a leading intellectual property position relating to the development and commercialization of microRNA therapeutics, composed

of:

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approximately 145 patents and patent applications that we own or have in-licensed from academic institutions related to microRNA and microRNA
drug products; and

numerous patents and patent applications exclusively licensed from our founding companies, Alnylam and Ionis, related to RNA technologies,
including patent and patent applications relating to chemical modification of oligonucleotides that are useful for microRNA therapeutics, including
chemical modifications incorporated into our clinical candidates.

Our portfolio of exclusively and jointly owned patent and patent applications is currently composed of approximately 145 U.S. and foreign patents and
patent applications with claims to compositions-of-matter or methods related to our microRNA drug products and microRNA product platform. Based on the
patents and patents that may issue from pending applications within our portfolio, patent protection for our microRNA drug products and their methods of use is
currently expected to expire between 2024 and 2042.

Our founding companies, Alnylam and Ionis, each own or otherwise have rights to numerous patents and patent applications concerning oligonucleotide

technologies and a substantial number of these patents and applications have been exclusively licensed to us for use in the microRNA field. The technologies
covered in these patents and applications include various chemical modifications that are applicable to microRNA therapeutics. Due to patent expiration and
strategic patent portfolio decisions, the total number licensed to us will fluctuate from year to year. Among the licensed patents or patent applications, those
covering key chemical modifications for use in microRNA drug products are currently expected to expire in 2027 and 2029.

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 date of filing the non-provisional application. In the United States, a patent’s term may be lengthened by patent term
adjustment, which compensates a patentee for administrative delays by the U.S. Patent and Trademark Office ("U.S. PTO") in granting a patent, or may be
shortened if a patent is terminally disclaimed over an earlier-filed patent.

The term of a patent that covers an FDA-approved drug may also be eligible for patent term extension, which permits patent term restoration of a U.S.

patent as compensation for the patent term lost during the FDA regulatory review process. The Hatch-Waxman Act permits a patent term extension of up to five
years beyond the expiration of the patent. The length of the

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patent term extension is related to the length of time the drug is under regulatory review. A 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. Similar provisions are
available in Europe and other foreign jurisdictions to extend the term of a patent that covers an approved drug. When possible, depending upon the length of
clinical trials and other factors involved in the filing of a new drug application ("NDA") we expect to apply for patent term extensions for patents covering our
microRNA product candidates and their methods of use.

In some circumstances we rely, and may continue to rely, on trade secrets to protect our technology. However, trade secrets can be difficult to protect. We
seek to protect our proprietary technology and processes, in part, by entering into confidentiality agreements with our employees, consultants, scientific advisors
and contractors. We also seek to preserve the integrity and confidentiality of our data and trade secrets by maintaining physical security of our premises and
physical and electronic security of our information technology systems.

Our Technology Licenses

Alnylam/Ionis

In September 2007, we entered into a license and collaboration agreement with Alnylam and Ionis, which we subsequently amended, restated and

superseded in January 2009, and further amended in June 2010, October 2011 and August 2013. Under the agreement, we acquired an exclusive, royalty-
bearing, worldwide license, with rights to sublicense, to patent rights owned or licensed by Alnylam and Ionis to develop, manufacture and commercialize
products covered by the licensed patent rights for use in microRNA compounds which are microRNA antagonists and microRNA therapeutics containing these
compounds. In addition, we have certain rights to miR-mimics. Under the agreement, we granted to both Alnylam and Ionis a license to practice our intellectual
property developed by us to the extent that it is useful specifically to Alnylam’s RNAi programs or Ionis’ single-stranded oligonucleotide programs, but not
including microRNA compounds or therapeutics that are the subject of our exclusive licenses from Alnylam and Ionis.

We are required to use commercially reasonable efforts to develop and commercialize licensed products under the agreement. We are required to notify
Alnylam and Ionis when a program reaches development stage (defined as initiation of good laboratory practices ("GLP") toxicology studies) and whether or
not we intend to pursue the program. Under the agreement, both Alnylam and Ionis have an option to assume the development and commercialization of
product candidates in a program that we do not pursue. If neither Alnylam nor Ionis exercises this option, we are required to use our best efforts to finalize a
term sheet with a third party with respect to such program. In the event we are unable to complete a transaction with a third party, both Alnylam and Ionis have
a second opt-in option.

If an election is made by either Alnylam or Ionis (but not both) to opt-in, such party will pay us a one-time fixed payment, the amount of which will
depend on whether the first or the second opt-in option was exercised, with a higher amount due if the first opt-in option was exercised. Clinical and regulatory
milestones are also payable to us in the event the opt-in election is exercised. Such milestones total $64.0 million in the aggregate if the election is made during
the first opt-in period or $15.7 million in the aggregate if the election is made at the second opt-in period. Tiered royalties are payable to us as a percentage of
net sales on all products commercialized by the opt-in party. These royalties range from the low to middle single digits depending upon the volume of sales. The
opt-in party is also entitled to sublicense the development program to a third party. In such a case, we are also entitled to receive a percentage of the sublicense
income received by the opt-in party. The percentage payable depends upon the point at which the opt-in party sublicenses the program and ranges from the low
end of the 10 to 20% range to the high end of the 40 to 50% range. The opt-in party is only required to pay the higher of the clinical and regulatory milestones
or the sublicense income received in any calendar quarter. The opt-in party is also responsible for all third-party payments due under other agreements as a
result of the development. In the event both Alnylam and Ionis elect to opt-in during either opt-in period, the parties have agreed to work together to amend the
development plan to continue development of the project, including funding of such project and assignment of roles and responsibilities.

In the event we or any future collaboration partner continues with the development of a program, each of Alnylam and Ionis are entitled to royalties as a

percentage of net sales. For products that we independently commercialize, these royalties will be in the low single digits. For products commercialized by a
third-party collaborator, the royalties will be either the same percentage of net sales as described above or, if the sublicense does not provide a specified level of
royalties to us or upon our election, a percentage of the sublicense income received by us from the strategic collaboration partner and a modified royalty. The
modified royalty would be based upon the lower of the single digit percentage discussed above or one third of the royalty received by us after payments made
by us to third parties for development, manufacture and commercialization activities under other agreements. In addition, if we sublicense rights to a
collaborator, we will be required to pay to each of Alnylam and Ionis a percentage of our sublicense income in the mid-single digits. We are also responsible for
payments due to third parties under

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other agreements as a result of our development activities, including payments owed by Alnylam and/or Ionis under their agreements.

Under the October 2011 amendment, Alnylam and Ionis granted us the right to research microRNA mimics under the licensed intellectual property of

Alnylam and Ionis. In the event we develop a miR-mimic, we must first obtain approval from Alnylam and/or Ionis, as applicable, and such approval is subject
to the consent of applicable third parties, if any. No additional consideration will be owed by us to Alnylam or Ionis for granting approval. We have the right to
sublicense our research rights. We granted to both Alnylam and Ionis a fully paid up, worldwide and exclusive license to any intellectual property developed by
us and useful to their research programs and which are not microRNA antagonists or approved miR-mimics.

In August 2013, we entered into an amendment to the Amended and Restated License and Collaboration Agreement with Ionis and Alnylam dated
January 1, 2009, as amended in June 2010 and October 2011 (as amended, the “Amendment”). Under the terms of the Amendment, the parties agreed to our use
of certain Alnylam-controlled intellectual property concerning the use and manufacture of GalNAc conjugates (“GalNAc Process Technology”) on a non-
exclusive basis. We will generally not be permitted to sublicense or otherwise transfer the GalNAc Process Technology and other Alnylam licensed intellectual
property rights relating to GalNAc conjugate technology without the prior written consent of Alnylam, subject to certain limited exceptions for sublicenses to
third party collaboration partners. There were no financial terms related to this Amendment. Amounts included in our operating expenses as a result of costs
incurred from services provided under the Agreement or out-of-pocket expenses were zero for the years ended December 31, 2023 and 2022.

In February 2015, we entered into a letter agreement with Alnylam pursuant to which we and Alnylam agreed to the financial terms for certain technology

acquired by Alnylam within the licensed patent rights under our Amended and Restated License and Collaboration Agreement (the “Additional Patent Rights”)
with Alnylam and Ionis. In addition to any royalties payable by us to Alnylam pursuant to the terms of the Amended and Restated License and Collaboration
Agreement, we agreed to pay Alnylam an additional low single-digit royalty on net sales of certain products utilizing the Additional Patent Rights, with the
exact royalty percentage payable being dependent on the total amount of net sales during the calendar year. We also agreed to pay Alnylam milestone payments
on certain products utilizing the additional patent rights upon the achievement of certain regulatory milestone events. There was no activity under this
agreement for the year ended December 31, 2023.

The agreement expires on the earlier of the cessation of development of the potential royalty-bearing products prior to the commercial sale of any such

products anywhere in the world or following the first commercial sale of such products, the expiration of royalty obligations determined on a country-by-
country and product-by-product basis.

Manufacturing

We contract with third parties to manufacture our product candidates and intend to continue to do so in the future. We do not own or operate, nor do we
expect to own or operate, facilities for product manufacturing, storage and distribution, or testing. We have personnel with extensive technical, manufacturing,
analytical and quality experience and strong project management discipline to oversee contract manufacturing and testing activities, and to compile
manufacturing and quality information for our regulatory submissions.

Manufacturing is subject to extensive regulations that impose various procedural and documentation requirements, which govern record keeping,
manufacturing processes and controls, personnel, quality control and quality assurance, among others. Our systems and contractors are required to be in
compliance with these regulations, and this is assessed regularly through monitoring of performance and a formal audit program.

Competition

The biotechnology and pharmaceutical industries are characterized by intense and rapidly changing competition to develop new technologies and
proprietary products. While we believe that our intellectual property estate and scientific expertise in the microRNA field provide us with competitive
advantages, we face potential competition from many different sources, including larger and better-funded pharmaceutical companies. Any products that we
may commercialize will have to compete with existing and new therapies that may become available in the future. In addition, we expect that for each disease
category for which we develop and apply our microRNA therapeutics, there are other biotechnology companies that will compete against us by applying
marketed products and development programs using technology other than microRNA therapeutics. The key competitive factors that will affect the success of
any of our development candidates, if commercialized, are likely to be their efficacy, safety, convenience, price and the availability of reimbursement from
government and other third-party payors relative to such competing technologies. Our commercial opportunity could be reduced or eliminated if our
competitors have products which are better in one or more of these categories.

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Currently, there is one drug approved and several therapies in preclinical and clinical development for the treatment of patients with ADPKD. In 2018,
Otsuka Pharmaceutical Co., Ltd. received approval by the FDA to market Jynarque® to slow the kidney function decline in adults at risk of rapidly-progressing
ADPKD. Additional therapies reported to be in clinical development include XRx-008 (reformulation of oxypurinol) from Xortx Therapeutics Inc., which
completed a bridging pharmacokinetics study and plans to initiate a Phase 3 study in patients with ADPKD and hyperuricemia, tesevatinib from Kadmon
Corporation, which completed a Phase 2 study in 2022, and which was recently acquired by Sanofi, and Johnson & Johnson reported the oral small molecule
JNJ-0237 had completed a Phase 1 single-ascending dose safety study in healthy volunteers. Vertex recently announced completion of IND-enabling studies of
VX-407 for the treatment of a subset of patients with ADPKD with a specific mutation, and anticipate initiating a Phase 1 clinical trial in healthy volunteers in
2024.

Many  of  our  competitors,  either  alone  or  with  their  collaboration  partners,  have  significantly  greater  financial  resources  and  expertise  in  research  and
development, pre-clinical testing, clinical trials, manufacturing, and marketing than we do. Future collaborations and mergers and acquisitions may result in
further resource concentration among a smaller number of competitors.

Our commercial potential could be reduced or eliminated if our competitors develop and commercialize products that are safer, more effective, have fewer
or  less  severe  side  effects,  are  more  convenient  or  are  less  expensive  than  products  that  we  may  develop.  Our  competitors  also  may  obtain  FDA  or  other
regulatory approval for their products more rapidly than we may obtain approval for ours, which could result in our competitors establishing a strong market
position before we are able to enter the market or make our development more complicated.

Government Regulation and Product Approval

Government authorities in the United States, at the federal, state and local level, and other countries extensively regulate, among other things, the
research, development, testing, manufacture, quality control, approval, labeling, packaging, storage, record-keeping, promotion, advertising, distribution, post-
approval monitoring and reporting, marketing and export and import of products such as those we are developing. Any product candidate that we develop must
be approved by the FDA before it may be legally marketed in the United States and by the appropriate foreign regulatory agency before it may be legally
marketed in foreign countries.

U.S. drug development process

In the United States, the FDA regulates drugs under the Federal Food, Drug and Cosmetic Act ("FDCA") and implementing regulations. Drugs are also
subject to other federal, state and local statutes and regulations. The process of obtaining regulatory approvals and the subsequent compliance with appropriate
federal, state, local and foreign statutes and regulations require the expenditure of substantial time and financial resources. Failure to comply with the applicable
U.S. requirements at any time during the product development process, approval process or after approval, may subject an applicant to administrative or judicial
civil or criminal sanctions. FDA sanctions could include refusal to approve pending applications, withdrawal of an approval, clinical hold, warning letters,
product recalls, product seizures, total or partial suspension of production or distribution, injunctions, fines, refusals of government contracts, debarment,
restitution, disgorgement or civil or criminal penalties. Any agency or judicial enforcement action could have a material adverse effect on us. The process
required by the FDA before a drug may be marketed in the United States generally involves the following:

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•

•

•

•

•

•

completion of nonclinical laboratory tests, animal studies and formulation studies according to GLP or other applicable regulations;

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

performance of adequate and well-controlled human clinical trials according to the FDA’s regulations commonly referred to as current good clinical
practices ("GCPs") to establish the safety and efficacy of the proposed drug for its intended use;

submission to the FDA of an NDA for a new drug;

satisfactory completion of an FDA inspection of the manufacturing facility or facilities where the drug is produced to assess compliance with the
FDA’s current good manufacturing practice standards ("cGMP") to assure that the facilities, methods and controls are adequate to preserve the
drug’s identity, strength, quality and purity;

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

FDA review and approval of the NDA.

The lengthy process of seeking required approvals and the continuing need for compliance with applicable statutes and regulations require the expenditure

of substantial resources and approvals are inherently uncertain.

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Before testing any compounds with potential therapeutic value in humans, the drug candidate enters the preclinical study stage. Preclinical tests, also
referred to as nonclinical studies, include laboratory evaluations of product chemistry, toxicity and formulation, as well as animal studies to assess the potential
safety and activity of the drug candidate. The conduct of the preclinical tests must comply with federal regulations and requirements including GLP. The
sponsor must submit the results of the preclinical tests, together with manufacturing information, analytical data, any available clinical data or literature and a
proposed clinical protocol, to the FDA as part of the IND. The IND automatically becomes effective 30 days after receipt by the FDA, unless the FDA imposes
a clinical hold within that 30-day time period. In such a case, the IND sponsor and the FDA must resolve any outstanding concerns before the clinical trial can
begin. The FDA may also impose clinical holds on a drug candidate at any time before or during clinical trials due to safety concerns or non-compliance.
Accordingly, we cannot be sure that submission of an IND will result in the FDA allowing clinical trials to begin, or that, once begun, issues will not arise that
suspend or terminate such trial.

Clinical trials involve the administration of the drug candidate to healthy volunteers or patients under the supervision of qualified investigators, generally
physicians not employed by or under the trial sponsor’s direct control. Clinical trials are conducted under protocols detailing, among other things, the objectives
of the clinical trial, dosing procedures, subject selection and exclusion criteria, and the parameters to be used to monitor subject safety. Each protocol must be
submitted to the FDA as part of the IND. Clinical trials must be conducted in accordance with the FDA’s regulations comprising the good clinical practices
requirements. Further, each clinical trial must be reviewed and approved by an independent institutional review board ("IRB") at or servicing each institution at
which the clinical trial will be conducted. An IRB is charged with protecting the welfare and rights of trial participants and considers such items as whether the
risks to individuals participating in the clinical trials are minimized and are reasonable in relation to anticipated benefits. The IRB also approves the form and
content of the informed consent that must be signed by each clinical trial subject or his or her legal representative and provide oversight for the clinical trial
until completed.

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

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•

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Phase 1.   The drug is initially introduced into healthy human subjects and tested for safety, dosage tolerance, absorption, metabolism, distribution
and excretion. In the case of some products for severe or life-threatening diseases, especially when the product may be too inherently toxic to
ethically administer to healthy volunteers, the initial human testing may be conducted in patients.

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

Phase 3.   Clinical trials are undertaken to further evaluate dosage, clinical efficacy and safety in an expanded patient population at geographically
dispersed clinical trial sites. These clinical trials are intended to establish the overall risk/benefit ratio of the product and provide an adequate basis
for product labeling. Generally, two adequate and well-controlled Phase 3 clinical trials are required by the FDA for approval of an NDA.

Post-approval clinical trials, sometimes referred to as Phase 4 clinical trials, may be conducted after initial marketing approval. These clinical trials are

used to gain additional experience from the treatment of patients in the intended therapeutic indication.

Annual progress reports detailing the results of the clinical trials must be submitted to the FDA and written IND safety reports must be promptly
submitted to the FDA and the investigators for serious and unexpected adverse events ("AEs") or any finding from tests in laboratory animals that suggests a
significant risk for human subjects. Phase 1, Phase 2 and Phase 3 clinical trials may not be completed successfully within any specified period, if at all. The
FDA or the sponsor or its data safety monitoring board may suspend a clinical trial at any time on various grounds, including a finding that the research subjects
or patients are being exposed to an unacceptable health risk. Similarly, an IRB can suspend or terminate approval of a clinical trial at its institution if the clinical
trial is not being conducted in accordance with the IRB’s requirements or if the drug has been associated with unexpected serious harm to patients.

Concurrently with clinical trials, companies usually complete additional animal studies and must also develop additional information about the chemistry

and physical characteristics of the drug as well as finalize a process for manufacturing the product in commercial quantities in accordance with cGMP
requirements. The manufacturing process must be capable of consistently producing quality batches of the drug candidate and, among other things, must
develop methods for testing the identity, strength, quality and purity of the final drug. Additionally, appropriate packaging must be selected and tested and
stability studies must be conducted to demonstrate that the drug candidate does not undergo unacceptable deterioration over its shelf life.

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U.S. review and approval processes

The results of product development, nonclinical studies and clinical trials, along with descriptions of the manufacturing process, analytical tests conducted

on the chemistry of the drug, proposed labeling and other relevant information are submitted to the FDA as part of an NDA requesting approval to market the
product. The submission of an NDA is subject to the payment of substantial user fees; a waiver of such fees may be obtained under certain limited
circumstances.

In addition, under the Pediatric Research Equity Act ("PREA"), an NDA or supplement to an NDA must contain data to assess the safety and

effectiveness of the drug for the claimed indications in all relevant pediatric subpopulations and to support dosing and administration for each pediatric
subpopulation for which the product is safe and effective. The FDA may grant deferrals for submission of data or full or partial waivers. Unless otherwise
required by regulation, PREA does not apply to any drug for an indication for which orphan designation has been granted.

The FDA reviews all NDAs submitted to determine if they are substantially complete before it accepts them for filing. If the FDA determines that an

NDA is incomplete or is found to be non-navigable, the filing may be refused and must be re-submitted for consideration. Once the submission is accepted for
filing, the FDA begins an in-depth review of the NDA. Under the goals and policies agreed to by the FDA under the Prescription Drug User Fee Act
("PDUFA"), the FDA has 10 months from acceptance of filing in which to complete its initial review of a standard NDA and respond to the applicant, and six
months from acceptance of filing for a priority NDA. The FDA does not always meet its PDUFA goal dates. The review process and the PDUFA goal date may
be extended by three months or longer if the FDA requests or the NDA sponsor otherwise provides additional information or clarification regarding information
already provided in the submission before the PDUFA goal date.

After the NDA submission is accepted for filing, the FDA reviews the NDA to determine, among other things, whether the proposed product is safe and
effective for its intended use, and whether the product is being manufactured in accordance with cGMP to assure and preserve the product’s identity, strength,
quality and purity. The FDA may refer applications for novel drug or biological products or drug or biological products which present difficult questions of
safety or efficacy to an advisory committee, typically a panel that includes clinicians and other experts, for review, evaluation and a recommendation as to
whether the application should be approved and under what conditions. The FDA is not bound by the recommendations of an advisory committee, but it
considers such recommendations carefully when making decisions. During the drug approval process, the FDA also will determine whether a risk evaluation
and mitigation strategy ("REMS") is necessary to assure the safe use of the drug. If the FDA concludes a REMS is needed, the sponsor of the NDA must submit
a proposed REMS; the FDA will not approve the NDA without a REMS, if required.

Before approving an NDA, the FDA will inspect the facilities at which the product is manufactured. The FDA will not approve the product unless it
determines that the manufacturing processes and facilities are in compliance with cGMP requirements and adequate to assure consistent production of the
product within required specifications. Additionally, before approving an NDA, the FDA will typically inspect the sponsor and one or more clinical sites to
assure that the clinical trials were conducted in compliance with IND study requirements. If the FDA determines that the application, manufacturing process or
manufacturing facilities are not acceptable it will outline the deficiencies in the submission and often will request additional testing or information.

The NDA review and approval process is lengthy and difficult and the FDA may refuse to approve an NDA if the applicable regulatory criteria are not
satisfied or may require additional clinical data or other data and information. Even if such data and information is submitted, the FDA may ultimately decide
that the NDA does not satisfy the criteria for approval. Data obtained from clinical trials are not always conclusive and the FDA may interpret data differently
than we interpret the same data. The FDA will issue a complete response letter if the agency decides not to approve the NDA. The complete response letter
usually describes all of the specific deficiencies in the NDA identified by the FDA. The deficiencies identified may be minor, for example, requiring labeling
changes, or major, for example, requiring additional clinical trials. Additionally, the complete response letter may include recommended actions that the
applicant might take to place the application in a condition for approval. If a complete response letter is issued, the applicant may either submit new
information, addressing all of the deficiencies identified in the letter, or withdraw the application.

If a product receives regulatory approval, the approval may be significantly limited to specific diseases and dosages or the indications for use may
otherwise be limited, which could restrict the commercial value of the product. Further, the FDA may require that certain contraindications, warnings or
precautions be included in the product labeling. In addition, the FDA may require post marketing clinical trials, sometimes referred to as Phase 4 clinical trials,
which are designed to further assess a drug safety and effectiveness and may require testing and surveillance programs to monitor the safety of approved
products that have been commercialized.

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Orphan drug designation

Under the Orphan Drug Act, the FDA may grant orphan designation to a drug or biological product intended to treat a rare disease or condition, which is
generally a disease or condition that affects fewer than 200,000 individuals in the United States, or more than 200,000 individuals in the United States and for
which there is no reasonable expectation that the cost of developing and making a drug or biological product available in the United States for this type of
disease or condition will be recovered from sales of the product. Orphan product designation must be requested before submitting an NDA. After the FDA
grants orphan product designation, the identity of the therapeutic agent and its potential orphan use are disclosed publicly by the FDA. Orphan product
designation does not convey any advantage in or shorten the duration of the regulatory review and approval process.

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

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

Expedited development and review programs

The FDA has several regulatory pathways for expedited development and/or review of products intended to treat serious conditions. These pathways are
Fast Track designation, Breakthrough Therapy designation, accelerated approval, and priority review. These programs do not change the standards for approval
but may expedite the development or approval process. Products may meet the standards for consideration under one or more of these pathways.

Fast Track Designation: The Fast Track program is intended to expedite development or facilitate the process for reviewing new drugs and biological

products that meet certain criteria. Specifically, new drugs and biological products are eligible for Fast Track designation if they are intended to treat a serious or
life-threatening condition and demonstrate the potential to address unmet medical needs for the condition. Fast Track designation applies to the combination of
the product and the specific indication for which it is being studied. In addition to more frequent meetings with the FDA to discuss the drug’s development plan
and ensure collection of appropriate data needed to support drug approval, the FDA will consider for review sections of the NDA on a rolling basis as sections
are completed, based on an agreed schedule, and the sponsor pays any required user fees upon submission of the first section of the NDA.

Breakthrough Therapy Designation: Breakthrough Therapy designation is a process designed to expedite the development and review of drugs that are

intended to treat a serious condition and where preliminary clinical evidence indicates that the drug may demonstrate substantial improvement over available
therapy on or more clinically significant endpoint(s). A drug that receives Breakthrough Therapy designation from the FDA is eligible for all Fast Track
designation features, plus intensive guidance on an efficient drug development program beginning as early as Phase 1 and organizational commitment involving
senior managers.

Accelerated Approval: Products may be eligible for accelerated approval. Drug or biological products studied for their safety and effectiveness in
treating serious or life-threatening illnesses and that provide meaningful therapeutic benefit over existing treatments may receive accelerated approval, which
means that they may be approved on the basis of adequate and well-controlled clinical trials establishing that the product has an effect on a surrogate endpoint
that is reasonably likely to predict a clinical benefit, or on the basis of an effect on a clinical endpoint other than survival or irreversible morbidity. As a
condition of approval, the FDA may require that a sponsor of a drug or biological product receiving accelerated approval perform adequate and well-controlled
post-marketing clinical trials. In addition, the FDA currently requires as a condition for accelerated approval pre-approval of promotional materials, which could
adversely impact the timing of the commercial launch of the product. Accelerated Approval can be granted with restrictions to the marketing and distribution of
the product, and the FDA can withdraw marketing approval if the required post-marketing studies fail to show a clinical benefit or if the Sponsor fails to
conduct required post-marketing studies.

Priority Review: Any product is eligible for priority review if it has the potential to provide safe and effective therapy where no satisfactory alternative

therapy exists or a significant improvement in the treatment, diagnosis or prevention of a

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disease compared to marketed products. The FDA will attempt to direct additional resources to the evaluation of an application for a new drug or biological
product designated for priority review in an effort to facilitate the review.

Post-approval requirements

Any drug products for which we or any future strategic collaboration partners receive FDA approvals are subject to continuing regulation by the FDA,
including, among other things, record-keeping requirements, reporting of adverse experiences with the product, providing the FDA with updated safety and
efficacy information, product sampling and distribution requirements, complying with certain electronic records and signature requirements and complying with
FDA promotion and advertising requirements, which include, among others, standards for direct-to-consumer advertising, promoting drugs for uses or in patient
populations that are not described in the drug’s approved labeling (known as “off-label use”), industry-sponsored scientific and educational activities, and
promotional activities involving the internet. Failure to comply with FDA requirements can have negative consequences, including adverse publicity,
enforcement letters from the FDA, mandated corrective advertising or communications with doctors, and civil or criminal penalties. Although physicians may
prescribe legally available drugs for off-label uses, manufacturers may not market or promote such off-label uses.

We rely, and expect to continue to rely, on third parties for the production of clinical and commercial quantities of any products that we may
commercialize. Any future strategic collaboration partners may also utilize third parties for some or all of a product we develop with such strategic
collaboration partner. Manufacturers of our products are required to comply with applicable FDA manufacturing requirements contained in the FDA’s cGMP
regulations. cGMP regulations require among other things, quality control and quality assurance as well as the corresponding maintenance of records and
documentation. Drug manufacturers and other entities involved in the manufacture and distribution of approved drugs are required to register their
establishments with the FDA and certain state agencies, and are subject to periodic unannounced inspections by the FDA and certain state agencies for
compliance with cGMP and other laws. Accordingly, manufacturers must continue to expend time, money, and effort in the area of production and quality
control to maintain cGMP compliance. Discovery of problems with a product after approval may result in restrictions on a product, manufacturer, or holder of
an approved NDA, including withdrawal of the product from the market. In addition, changes to the manufacturing process generally require prior FDA
approval before being implemented and other types of changes to the approved product, such as adding new indications and additional labeling claims, are also
subject to further FDA review and approval.

The FDA also may require post-marketing testing, known as Phase 4 testing, risk evaluation and mitigation strategies and surveillance to monitor the

effects of an approved product or place conditions on an approval that could restrict the distribution or use of the product.

U.S. patent term restoration and marketing exclusivity

Depending upon the timing, duration and specifics of the FDA approval of the use of our drug candidates, some of our United States patents may be
eligible for limited patent term extension under the Drug Price Competition and Patent Term Restoration Act of 1984, commonly referred to as the Hatch-
Waxman Amendments. The Hatch-Waxman Amendments permit a patent restoration term of up to five years as compensation for patent term lost during
product development and the FDA regulatory review process. However, patent term restoration cannot extend the remaining term of a patent beyond a total of
14 years from the product’s approval date. The patent term restoration period is generally one-half the time between the effective date of an IND and the
submission date of an NDA plus the time between the submission date of an NDA and the approval of that application. Only one patent applicable to an
approved drug is eligible for the extension and the application for the extension must be submitted prior to the expiration of the patent. The United States Patent
and Trademark Office, in consultation with the FDA, reviews and approves the application for any patent term extension or restoration. In the future, we may
intend to apply for restoration of patent term for one of our currently owned or licensed patents to add patent life beyond its current expiration date, depending
on the expected length of the clinical trials and other factors involved in the filing of the relevant NDA.

Market exclusivity provisions under the FDCA can also delay the submission or the approval of certain applications of other companies seeking to
reference another company’s NDA. The FDCA provides a five-year period of non-patent marketing exclusivity within the United States to the first applicant to
obtain approval of an NDA for a new chemical entity. A drug is a new chemical entity if the FDA has not previously approved any other new drug containing
the same active moiety, which is the molecule or ion responsible for the action of the drug substance. During the exclusivity period, the FDA may not accept for
review an abbreviated new drug application ("ANDA") or a 505(b)(2) NDA submitted by another company for another version of such drug where the applicant
does not own or have a legal right of reference to all the data required for approval. However, an application may be submitted after four years if it contains a
certification of patent invalidity or non-infringement to one of the patents listed with the FDA by the innovator NDA holder. The FDCA also provides three
years of marketing exclusivity for an NDA, or supplement to an existing NDA if new clinical investigations, other than bioavailability studies, that were

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conducted or sponsored by the applicant are deemed by the FDA to be essential to the approval of the application, for example new indications, dosages or
strengths of an existing drug. This three-year exclusivity covers only the conditions associated with the new clinical investigations and does not prohibit the
FDA from approving ANDAs for drugs containing the original active agent. Five-year and three-year exclusivity will not delay the submission or approval of a
full NDA. However, an applicant submitting a full NDA would be required to conduct or obtain a right of reference to all of the preclinical studies and adequate
and well-controlled clinical trials necessary to demonstrate safety and effectiveness. Pediatric exclusivity is another type of regulatory market exclusivity in the
United States. Pediatric exclusivity, if granted, adds six months to existing exclusivity periods and patent terms. This six-month exclusivity, which runs from the
end of other exclusivity protection or patent term, may be granted based on the voluntary completion of a pediatric trial in accordance with an FDA-issued
“Written Request” for such a trial.

U.S. Foreign Corrupt Practices Act

The U.S. Foreign Corrupt Practices Act ("FCPA") prohibits certain individuals and entities, including us, from promising, paying, offering to pay, or

authorizing the payment of anything of value to any foreign government official, directly or indirectly, to obtain or retain business or an improper advantage.
The U.S. Department of Justice and the U.S. Securities and Exchange Commission ("SEC") have increased their enforcement efforts with respect to the FCPA.
Violations of the FCPA may result in large civil and criminal penalties and could result in an adverse effect on a company’s reputation, operations, and financial
condition. A company may also face collateral consequences such as debarment and the loss of export privileges.

Federal and state healthcare laws and regulations

In addition to FDA restrictions on marketing of pharmaceutical products, several other types of state and federal healthcare laws and regulations have

been applied to restrict certain business practices in the biopharmaceutical industry in recent years. These laws include the following:

The federal Anti-Kickback Statute prohibits, among other things, knowingly and willfully offering, paying, soliciting, or receiving remuneration to induce

or in return for purchasing, leasing, ordering, or arranging for the purchase, lease, or order of any healthcare item or service reimbursable under Medicare,
Medicaid, or other federally financed healthcare programs. The term “remuneration” has been broadly interpreted to include anything of value, including for
example, gifts, discounts, the furnishing of supplies or equipment, credit arrangements, payments of cash, waivers of payment, ownership interests and
providing anything at less than its fair market value. The Anti-Kickback Statute has been interpreted to apply to arrangements between pharmaceutical
manufacturers on one hand and prescribers, purchasers, formulary managers and other individuals and entities on the other. Although there are a number of
statutory exemptions and regulatory safe harbors protecting certain common activities from prosecution, the exceptions and safe harbors are drawn narrowly,
and our practices may not in all cases meet all of the criteria for statutory exceptions or regulatory safe harbor protection. Practices that involve remuneration
that may be alleged to be intended to induce prescribing, purchases, or recommendations may be subject to scrutiny if they do not qualify for an exception or
safe harbor. Several courts have interpreted the statute’s intent requirement to mean that if any one purpose of an arrangement involving remuneration is to
induce referrals of federal healthcare covered business, the statute has been violated. The reach of the Anti-Kickback Statute was also broadened by the Patient
Protection and Affordable Health Care Act, as amended by the Health Care and Education Reconciliation Act (collectively, the "ACA"), which, among other
things, amended the intent requirement of the federal Anti-Kickback Statute. Pursuant to the statutory amendment, a person or entity no longer needs to have
actual knowledge of this statute or specific intent to violate it in order to have committed a violation. In addition, the ACA provides that the government may
assert that a claim including items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes
of the civil False Claims Act (discussed below) or the civil monetary penalties statute, which imposes penalties against any person who is determined to have
presented or caused to be presented a claim to a federal health program that the person knows or should know is for an item or service that was not provided as
claimed or is false or fraudulent.

Federal false claims laws, including the federal civil False Claims Act, prohibit any person from knowingly presenting, or causing to be presented, a false

claim for payment to the federal government. Pharmaceutical and other healthcare companies have been prosecuted under these laws for allegedly providing
free product to customers with the expectation that the customers would bill federal programs for the product. Companies have been prosecuted for causing
false claims to be submitted because of the companies’ marketing of the product for unapproved, and thus non-reimbursable, uses.

Many states also have statutes or regulations similar to the federal Anti-Kickback Statute and civil False Claims Act, which state laws apply to items and
services reimbursed under Medicaid and other state programs, or, in several states, apply regardless of the payor. Also, the federal Health Insurance Portability
and Accountability Act of 1996 ("HIPAA") created additional federal criminal statutes that prohibit, among other things, knowingly and willfully executing a
scheme to defraud any healthcare benefit program, including private third-party payors and knowingly and willfully falsifying, concealing or

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covering up a material fact or making any materially false, fictitious or fraudulent statement in connection with the delivery of or payment for healthcare
benefits, items or services.

Because of the breadth of these laws, it is possible that some of our business activities could be subject to challenge under one or more of such laws. Such

a challenge could have a material adverse effect on our business, financial condition and results of operations.

In addition, we may be subject to data privacy and security regulations by both the U.S. government and the states and other jurisdictions in which we

conduct our business. HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act ("HITECH") and their implementing
regulations, impose on “covered entities,” including certain healthcare providers, healthcare clearinghouses, and health plans, as well as their respective
“business associates” that receive or obtain protected health information in connection with providing a service on behalf of a covered entity, relating to the
privacy, security, and transmission of personally identifiable health information (“PHI”), as well as their covered subcontractors. HITECH increased the civil
and criminal penalties that may be imposed against covered entities, business associates and possibly other persons, and gave state attorneys general new
authority to file civil actions for damages or injunctions in federal courts to enforce the federal HIPAA laws and seek attorney’s fees and costs associated with
pursuing federal civil actions. In addition, the increase in U.S. state laws (e.g., the California Consumer Privacy Act of 2018, as amended by the California
Privacy Rights Act of 2020 (“CPRA”) (collectively, “CCPA”)) governing privacy and security of personal information, including health information, many of
which differ from each other in significant ways and may not have the same effect, complicates compliance efforts.

Further, the federal Physician Payments Sunshine Act, enacted as part of the ACA, requires certain manufacturers of drugs, devices, biologics and

medical supplies for which payment is available under Medicare, Medicaid or the Children’s Health Insurance Program, with specific exceptions, to report
annually to the Centers for Medicare & Medicaid Services ("CMS") information related to payments or other transfers of value made to physicians (defined to
include doctors, dentists, optometrists, podiatrists and chiropractors), other healthcare professionals (such as physician assistants and nurse practitioners), and
teaching hospitals. Applicable manufacturers and applicable group purchasing organizations must also report annually to CMS ownership and investment
interests held by the physicians and their immediate family members.

Other state laws and regulations may also apply, such as those that: require pharmaceutical companies to comply with the pharmaceutical industry’s
voluntary compliance guidelines and the relevant compliance guidance promulgated by the federal government; require the reporting of information related to
drug pricing and/or require the report of information related to transfers of value to healthcare providers or marketing expenditures. Certain state and local laws
also require the registration of pharmaceutical sales representatives.

If our operations are found to be in violation of any of the federal and state healthcare laws or regulations described above or any other governmental
regulations that apply to us, we may be subject to penalties, including criminal and significant civil monetary penalties, damages, fines, imprisonment, exclusion
from government programs, disgorgement, additional reporting requirements and/or oversight if we become subject to a corporate integrity agreement or similar
agreement to resolve allegations of non-compliance with these laws, contractual damages, reputational harm, diminished profits and future earnings, and the
curtailment or restructuring of our operations, any of which could adversely affect our ability to operate our business and our results of operations. To the extent
that any of our product candidates are ultimately sold in a foreign country, we may be subject to similar foreign laws and regulations, which may include, for
instance, applicable post-marketing requirements, including safety surveillance, anti-fraud and abuse laws, and implementation of corporate compliance
programs and reporting of payments or transfers of value to healthcare professionals.

Health Reform

In the United States and foreign jurisdictions, there have been a number of legislative and regulatory changes to the healthcare system that could affect

our future results of operations. In particular, there have been and continue to be a number of initiatives at the United States federal and state levels that seek to
reduce healthcare costs.

For example, the ACA includes measures to significantly change the way healthcare is financed by both governmental and private insurers. The ACA,
among other things, increased the minimum level of Medicaid rebates payable by manufacturers of brand name drugs; required collection of rebates for drugs
paid by Medicaid managed care organizations; required manufacturers to participate in a coverage gap discount program, under which they must agree to offer
point-of-sale discounts (increased to 70 percent, effective as of January 1, 2019) off negotiated prices of applicable brand drugs to eligible beneficiaries during
their coverage gap period, as a condition for the manufacturer’s outpatient drugs to be covered under Medicare Part D; imposed a non-deductible annual fee on
pharmaceutical manufacturers or importers who sell certain “branded prescription drugs” to specified federal government programs, implemented a new
methodology by which rebates owed by manufacturers under the Medicaid Drug Rebate Program are calculated for drugs that are inhaled, infused, instilled,
implanted, or injected expanded the types of entities eligible for the 340B drug discount program; expanded eligibility criteria for Medicaid programs; created a
new Patient-Centered Outcomes Research Institute to oversee, identify priorities in, and conduct

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comparative clinical effectiveness research, along with funding for such research; and established a Center for Medicare Innovation at CMS to test innovative
payment and service delivery models to lower Medicare and Medicaid spending, potentially including prescription drug spending.

There have been judicial and Congressional challenges to certain aspects of the ACA, as well as efforts by the Trump administration to repeal or replace

certain aspects of the ACA. For example, President Trump signed several Executive Orders and other directives designed to delay the implementation of certain
provisions of the ACA or otherwise circumvent some of the requirements for health insurance mandated by the ACA. Congress has also considered legislation
that would repeal or repeal and replace all or part of the ACA. While Congress has not passed comprehensive repeal legislation, bills affecting the
implementation of certain taxes under the ACA have been signed into law. Legislation enacted in 2017, informally titled the Tax Cuts and Jobs Act ("Tax Act"),
includes a provision which repealed, effective January 1, 2019, the tax-based shared responsibility payment imposed by the ACA on certain individuals who fail
to maintain qualifying health coverage for all or part of a year that is commonly referred to as the “individual mandate”. In addition, the 2020 federal spending
package permanently eliminated, effective January 1, 2020, the ACA-mandated “Cadillac” tax on high-cost employer-sponsored health coverage and medical
device tax and, effective January 1, 2021, also eliminated the health insurer tax. On June 17, 2021 the U.S. Supreme Court dismissed a challenge on procedural
grounds that argued the ACA is unconstitutional in its entirety because the “individual mandate” was repealed by Congress. Further, there have been a number
of health reform measures by the Biden administration that have impacted the ACA. For example, on August 16, 2022, President Biden signed the Inflation
Reduction Act of 2022 (“IRA”), into law, which among other things, extends enhanced subsidies for individuals purchasing health insurance coverage in ACA
marketplaces through plan year 2025. The IRA also eliminates the “donut hole” under the Medicare Part D program beginning in 2025 by significantly lowering
the beneficiary maximum out-of-pocket cost and by creating a new manufacturer discount program. It is possible that the ACA will be subject to judicial or
Congressional challenges in the future. It is unclear how such challenges and healthcare reform measures of the Biden administration will impact the ACA.

Other legislative changes have been proposed and adopted since the ACA was enacted. These changes include aggregate reductions to Medicare payments

to providers of 2% per fiscal year pursuant to the Budget Control Act of 2011, which began in 2013 and, due to subsequent legislative amendments to the
statute, including the Infrastructure Investment and Jobs Act, will remain in effect until 2032 unless additional Congressional action is taken. Additionally, on
March 11, 2021, President Biden signed the American Rescue Plan Act of 2021 into law, which eliminates the statutory Medicaid drug rebate cap, currently set
at 100% of a drug’s average manufacturer price, for single source and innovator multiple source drugs, beginning January 1, 2024. The American Taxpayer
Relief Act of 2012, among other things, further reduced Medicare payments to several providers, including hospitals and cancer treatment centers and increased
the statute of limitations period for the government to recover overpayments to providers from three to five years.

Further, there has been heightened governmental scrutiny in the United States of pharmaceutical pricing practices in light of the rising cost of prescription

drugs and biologics. Such scrutiny has resulted in several recent Congressional inquiries and federal and state legislative activity designed to, among other
things, bring more transparency to product pricing, review the relationship between pricing and manufacturer patient programs, and reform government
program reimbursement methodologies for products. For example, at the federal level, in July 2021, the Biden administration released an executive order,
“Promoting Competition in the American Economy,” with multiple provisions aimed at prescription drugs. In response to Biden’s executive order, on
September 9, 2021, the Department of Health and Human Services (“HHS”) released a Comprehensive Plan for Addressing High Drug Prices that outlines
principles for drug pricing reform and sets out a variety of potential legislative policies that Congress could pursue as well as potential administrative actions
HHS can take to advance these principles. No legislation or administrative actions have been finalized to implement these principles. In addition, the IRA,
among other things, (i) directs the Secretary of HHS to negotiate the price of certain high-expenditure, single-source drugs and biologics covered under
Medicare Part B and Medicare Part D, and subjects drug manufacturers to civil monetary penalties and a potential excise tax by offering a price that is not equal
to or less than the negotiated “maximum fair price” under the law, and (ii) imposes rebates under Medicare Part B and Medicare Part D to penalize price
increases that outpace inflation. These provisions take effect progressively starting in fiscal year 2023. On August 29, 2023, HHS announced the list of the first
ten drugs that will be subject to price negotiations, although the Medicare drug price negotiation program is currently subject to legal challenges. In response to
the Biden administration’s October 2022 executive order, on February 14, 2023, HHS released a report outlining three new models for testing by the CMS
Innovation Center which will be evaluated on their ability to lower the cost of drugs, promote accessibility, and improve quality of care. It is unclear whether the
models will be utilized in any health reform measures in the future. Further, on December 7, 2023, the Biden administration announced an initiative to control
the price of prescription drugs through the use of march-in rights under the Bayh-Dole Act. On December 8, 2023, the National Institute of Standards and
Technology published for comment a Draft Interagency Guidance Framework for Considering the Exercise of March-In Rights which for the first time includes
the price of a product as one factor an agency can use when deciding to exercise march-in rights. While march-in rights have not previously been exercised, it is
uncertain if that will continue under the new framework. At the state level, legislatures have increasingly passed legislation and implemented regulations
designed to control pharmaceutical and biological product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain
product access and marketing cost disclosure and transparency measures, and, in

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some cases, to encourage importation from other countries and bulk purchasing. For example, on January 5, 2024, the FDA approved Florida’s Section 804
Importation Program (SIP) proposal to import certain drugs from Canada for specific state healthcare programs. It is unclear how this program will be
implemented, including which drugs will be chosen, and whether it will be subject to legal challenges in the United States or Canada. Other states have also
submitted SIP proposals that are pending review by the FDA. Any such approved importation plans, when implemented, may result in lower drug prices for
products covered by those programs.

Pharmaceutical Coverage, Pricing, and Reimbursement

Significant  uncertainty  exists  as  to  the  coverage  and  reimbursement  status  of  any  product  candidates  for  which  we  obtain  regulatory  approval.  In  the
United  States  and  markets  in  other  countries,  sales  of  any  products  for  which  we  or  our  collaborators  receive  regulatory  approval  for  commercial  sale  will
depend, in part, on the extent to which third-party payors provide coverage and establish adequate reimbursement levels for such drug products.

In the United States, third-party payors include federal and state healthcare programs, government authorities, private managed care providers, private
health  insurers  and  other  organizations.  Third-party  payors  are  increasingly  challenging  the  price,  examining  the  medical  necessity  and  reviewing  the  cost-
effectiveness of medical drug products and medical services, in addition to questioning their safety and efficacy.  Moreover, the process for determining whether
a third-party payor will provide coverage for a drug product may be separate from the process for setting the price of a drug product or for establishing the
reimbursement rate that such a payor will pay for the drug product. A payor’s decision to provide coverage for a drug product does not imply that an adequate
reimbursement  rate  will  be  approved.  Further,  one  payor’s  determination  to  provide  coverage  for  a  drug  product  does  not  assure  that  other  payors  will  also
provide coverage for the drug product. Adequate third-party reimbursement may not be available to enable us to maintain price levels sufficient to realize an
appropriate return on our investment in product development.

The marketability of any product candidates for which we receive regulatory approval for commercial sale may suffer if the government and third-party
payors  fail  to  provide  adequate  coverage  and  reimbursement.  In  addition,  emphasis  on  managed  care  in  the  United  States  has  increased  and  we  expect  will
continue to increase the pressure on pharmaceutical pricing. Coverage policies and third-party reimbursement rates may change at any time. Even if favorable
coverage and reimbursement status is attained for one or more products for which we or our collaborators receive regulatory approval, less favorable coverage
policies and reimbursement rates may be implemented in the future.

Europe / rest of world government regulation

In addition to regulations in the United States, we and any future strategic collaboration partners are subject to a variety of regulations in other

jurisdictions governing, among other things, clinical trials and any commercial sales and distribution of our products.

Whether or not we or any future collaborators obtain FDA approval for a product, we must obtain the requisite approvals from regulatory authorities in

foreign countries prior to the commencement of clinical trials or marketing of the product in those countries. Certain countries outside of the United States have
a similar process that requires the submission of a clinical trial application much like the IND prior to the commencement of human clinical trials. In the EU, for
example, a clinical trial application ("CTA") must be submitted to each country’s national health authority and an independent ethics committee, much like the
FDA and IRB, respectively. Once the CTA is approved in accordance with a country’s requirements, clinical trial development may proceed.

The requirements and process governing the conduct of clinical trials, product licensing, pricing and reimbursement vary from country to country. In all

cases, the clinical trials are conducted in accordance with GCPs and the applicable regulatory requirements and the ethical principles that have their origin in the
Declaration of Helsinki.

To obtain regulatory approval of an investigational drug or biological product under EU regulatory systems, we or a strategic collaboration partner must

submit a marketing authorization application. The application in the United States is similar to that required in the EU, with the exception of, among other
things, country-specific document requirements.

For other countries outside of the EU, such as countries in Eastern Europe, Latin America or Asia, the requirements governing the conduct of clinical

trials, product licensing, pricing and reimbursement vary from country to country. In all cases, again, the clinical trials are conducted in accordance with GCPs
and the applicable regulatory requirements and the ethical principles that have their origin in the Declaration of Helsinki.

If we or any future strategic collaboration partners fail to comply with applicable foreign regulatory requirements, we may be subject to, among other

things, fines, suspension or withdrawal of regulatory approvals, product recalls, seizure of products, operating restrictions and criminal prosecution.

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Employees

As of December 31, 2023, we had 30 employees, all of which were full-time employees. Of these employees, 22 employees are engaged in research and
development activities and 8 employees are engaged in finance, legal, business development, human resources, facilities and general management. As of such
date, all our employees were based in the United States. All of our employees are at will employees, which means that each employee can terminate their
employment relationship with us and we can terminate our relationship with an employee at any time. We have no collective bargaining agreements with our
employees and we have not experienced any work stoppages. We also engage temporary consultants and contractors.

We believe a stable, capable and talented workforce is instrumental to our success. As such, we seek to attract and retain our employees through a
competitive base and merit bonus compensation program, high-quality benefits, various health and wellness initiatives and team-building activities. In addition
to our overall compensation package, we continually assess our internal talent for further development, training and education in alignment with our
organizational needs. Our human resources strategy is managed at the highest levels of our organization, including oversight from the Compensation Committee
of the Board of Directors. We believe Regulus is an attractive workplace; however, we are in a highly competitive field and geographic region for life science
talent and will continue to face significant competition for talent. We are an Equal Opportunity and Affirmative Action employer in compliance with the
requirements of the state and Federal laws.

Our Code of Business Conduct and Ethics serves as a critical tool to help us recognize and report unethical conduct, while preserving and nurturing our
core values of respect, business and scientific integrity, and excellence throughout our operations. We provide training on our Code of Business Conduct and
Ethics for our all of our employees annually.

Corporate Information

We were originally formed as a limited liability company under the name Regulus Therapeutics LLC in the State of Delaware in September 2007. In
January 2009, we converted Regulus Therapeutics LLC to a Delaware corporation and changed our name to Regulus Therapeutics Inc. Our principal executive
offices are located in San Diego, California and our telephone number is (858) 202-6300.

We maintain a website at www.regulusrx.com, to which we regularly post copies of our press releases as well as additional information about us. Our
Annual Reports on Form 10-K, Quarterly Reports on Form 10‑Q, Current Reports on Form 8-K, and amendments to reports filed pursuant to Sections 13(a) and
15(d) of the Securities Exchange Act of 1934, as amended ("Exchange Act") are available free of charge on our website as soon as reasonably practicable after
we electronically file such material with, or furnish it to, the SEC. The SEC maintains an internet site that contains our public filings with the SEC and other
information regarding the Company, at www.sec.gov. The contents of these websites are not incorporated into this Annual Report. Further, our references to the
URLs for these websites are intended to be inactive textual reference only.

The Regulus Therapeutics logo is a trademark of Regulus Therapeutics Inc. We use “Regulus Therapeutics” as a trademark in the United States and other

countries. We have registered this trademark in the United States, the EU and Switzerland. This Annual Report contains references to our trademarks and to
trademarks belonging to other entities. Solely for convenience, trademarks and trade names referred to in this Annual Report, including logos, artwork and other
visual displays, may appear without the   or  symbols, but such references are not intended to indicate, in any way, that we will not assert, to the fullest extent
under applicable law, our rights or the rights of the applicable licensor to these trademarks and trade names. We do not intend our use or display of other
companies’ trade names or trademarks to imply a relationship with, or endorsement or sponsorship of us by, any other companies.

™ 

®

Item 1A.    Risk Factors

You should consider carefully the following risk factors, together with all of the other information included in this Annual Report. Each of these risk

factors, either alone or taken together, could adversely affect our business, operating results and financial condition, as well as adversely affect the value of an
investment in our common stock. There may be additional risks that we do not presently know of or that we currently believe are immaterial which could also
impair our business and financial position.

RISKS RELATED TO THE DISCOVERY AND DEVELOPMENT OF PRODUCT CANDIDATES

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The approach we are taking to discover and develop drugs is novel and may never lead to marketable products.

We have concentrated our therapeutic product research and development efforts on microRNA technology, and our future success depends on the
successful development of this technology and products based on our microRNA product platform. Neither we, nor any other company, has received regulatory
approval to market therapeutics targeting microRNAs. The scientific discoveries that form the basis for our efforts to discover and develop product candidates
are relatively new. The scientific evidence to support the feasibility of developing product candidates based on these discoveries is both preliminary and limited.
If we do not successfully develop and commercialize product candidates based upon our technological approach, we may not become profitable and the value of
our common stock may decline.

Further, our focus solely on microRNA technology for developing drugs as opposed to multiple, more proven technologies for drug development
increases the risks associated with the ownership of our common stock. If we are not successful in developing any product candidates using microRNA
technology, we may be required to change the scope and direction of our product development activities. In that case, we may not be able to identify and
implement successfully an alternative product development strategy.

We may not be successful in our efforts to identify or discover potential product candidates.

The success of our business depends primarily upon our ability to identify, develop and commercialize microRNA therapeutics. Our research programs
may initially show promise in identifying potential product candidates, yet fail to yield product candidates for clinical development for a number of reasons,
including:

•

•

•

our research methodology or that of any future collaboration partner may be unsuccessful in identifying potential product candidates;

potential product candidates may be shown to have harmful side effects or may have other characteristics that may make the products unmarketable or
unlikely to receive marketing approval; or

any future collaboration partners may change their development profiles for potential product candidates or abandon a therapeutic area.    

If any of these events occur, we may be forced to abandon our development efforts for a program or programs, which would have a material adverse

effect on our business and could potentially cause us to cease operations. Research programs to identify new product candidates require substantial technical,
financial and human resources. We may focus our efforts and resources on potential programs or product candidates that ultimately prove to be unsuccessful.

Preclinical and clinical studies of our product candidates may not be successful. If we are unable to generate successful results from our preclinical and
clinical studies of our product candidates, or experience significant delays in doing so, our business may be materially harmed.

We have invested a significant portion of our efforts and financial resources in the identification and development of product candidates that target

microRNAs. Our ability to generate product revenues, which we do not expect will occur for many years, if ever, will depend heavily on the successful
development and eventual commercialization of our product candidates.

The success of our product candidates will depend on several factors, including the following:

successfully designing preclinical studies which may be predictive of clinical outcomes;

successful results from preclinical and clinical studies;

receipt of marketing approvals from applicable regulatory authorities;

obtaining and maintaining patent and trade secret protection for future product candidates;

establishing and maintaining manufacturing relationships with third parties or establishing our own manufacturing capability; and

successfully commercializing our products, if and when approved, whether alone or in collaboration with others.

•

•

•

•

•

•

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If we do not, or any future collaboration partners do not, achieve one or more of these factors in a timely manner or at all, we or any future collaboration

partners could experience significant delays or an inability to successfully complete the development of, or commercialize, our product candidates, which would
materially harm our business. For example, in July 2022, we received notification from Sanofi of its decision to terminate the HERA trial of RG-012 for failure
to meet Sanofi’s pre-defined futility criteria. In January 2023, we received notification from Sanofi of its decision to terminate the collaboration in its entirety.
Preclinical studies, even if successful, may not lead to successful clinical trials and results in early-stage clinical trials may not be predictive of successful
results in later stage clinical trials.

If clinical trials of our product candidates fail to demonstrate safety and efficacy to the satisfaction of regulatory authorities or do not otherwise
produce positive results, we may incur additional costs or experience delays in completing, or ultimately be unable to complete, the development and
commercialization of our product candidates.

Before obtaining marketing approval from regulatory authorities for the sale of product candidates, we or a collaboration partner must conduct extensive

clinical trials to demonstrate the safety and efficacy of the product candidates in humans. Clinical trials are expensive, difficult to design and implement, can
take many years to complete and is uncertain as to outcome. A failure of one or more clinical trials can occur at any stage of testing. The outcome of preclinical
studies and early clinical trials may not be predictive of the success of later clinical trials, and interim results of a clinical trial do not necessarily predict final
results. Moreover, preclinical and clinical data are often susceptible to varying interpretations and analyses, and many companies that have believed their
product candidates performed satisfactorily in preclinical studies and clinical trials have nonetheless failed to obtain marketing approval for their products.

Events which may result in a delay or unsuccessful completion of clinical development include:

delays in reaching an agreement with the FDA or other regulatory authorities on final trial design;

imposition of a clinical hold of our clinical trial operations or trial sites by the FDA or other regulatory authorities;

delays in reaching agreement on acceptable terms with prospective CROs and clinical trial sites;

our inability to adhere to clinical trial requirements directly or with third parties such as CROs;

delays in obtaining required institutional review board approval at each clinical trial site;

delays in recruiting suitable patients to participate in a trial;

delays in the testing, validation, manufacturing and delivery of the product candidates to the clinical sites;

delays in having patients complete participation in a trial or return for post-treatment follow-up;

delays caused by patients dropping out of a trial due to protocol procedures or requirements, product side effects or disease progression;

clinical sites dropping out of a trial to the detriment of enrollment;

time required to add new clinical sites; or

delays by our contract manufacturers to produce and deliver sufficient supply of clinical trial materials.

•

•

•

•

•

•

•

•

•

•

•

•

For example, in July 2018, we voluntarily paused our Phase 1 MAD clinical trial for RGLS4326 due to unexpected observations in our 27-week mouse

chronic toxicity study, which was designed to support the Phase 2 proof-of-concept clinical trial in ADPKD previously planned to start in mid-2019. The
observations in the mouse chronic toxicity study were unexpected, given the favorable safety profile of RGLS4326 in previous non-GLP and GLP toxicity
studies at the same or similar doses supporting the IND and Phase 1 clinical trial. In July 2019, the FDA notified us of additional nonclinical data requirements
and placed the IND on a partial clinical hold, formalizing the specific requirements to initiate the MAD study and further proceed into chronic dosing. In
October 2021, we announced we would discontinue development of RGLS4326 and would instead prioritize RGLS8429, targeting miR-17.

Additionally, in July 2022, we received notification from Sanofi of its decision to terminate the HERA trial of RG-012 for failure to meet Sanofi’s pre-

defined futility criteria. In January 2023, we received notification from Sanofi of its decision to terminate the collaboration in its entirety.

In addition, enrollment and retention of patients in clinical trials could be disrupted by man-made or natural disasters, public health pandemics or

epidemics or other business interruptions.

If we or any future collaboration partners are required to conduct additional clinical trials or other testing of any product candidates beyond those that are

originally contemplated, are unable to successfully complete clinical trials of any such product

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candidates or other testing, or if the results of these trials or tests are not positive or are only moderately positive or if there are safety concerns, we or any future
collaboration partners may:

•

•

•

•

•

•

be delayed in obtaining marketing approval for our product candidates;

not obtain marketing approval at all;

obtain approval for indications or patient populations that are not as broad as originally intended or desired;

obtain approval with labeling that includes significant use or distribution restrictions or safety warnings;

be subject to additional post-marketing testing requirements; or

have the product removed from the market after obtaining marketing approval.

Our product development costs will also increase if we experience delays in testing or marketing approvals. We do not know whether any clinical trials

will begin as planned, will need to be restructured or will be completed on schedule, or at all. Significant clinical trial delays also could shorten any periods
during which we may have the exclusive right to commercialize our product candidates or allow our competitors to bring products to market before we do,
which would impair our ability to successfully commercialize our product candidates and may harm our business and results of operations. Any inability to
successfully complete preclinical and clinical development, whether independently or with a collaboration partner, could result in additional costs to us or
impair our ability to generate revenues from product sales, regulatory and commercialization milestones and royalties.

Any of our product candidates may cause adverse effects ("AEs") or have other properties that could delay or prevent their regulatory approval or
limit the scope of any approved label or market acceptance.

AEs caused by our product candidates could cause us, other reviewing entities, clinical trial sites or regulatory authorities to interrupt, delay or halt

clinical trials and could result in the denial of regulatory approval. Certain oligonucleotide therapeutics have shown injection site reactions and pro-
inflammatory effects and may also lead to impairment of kidney or liver function. There is a risk that our future product candidates may induce similar AEs.

If AEs are observed in any clinical trials of our product candidates, including those that a future collaboration partner may develop under an agreement

with us, our or any future collaboration partners’ ability to obtain regulatory approval for product candidates may be negatively impacted.

Further, if any of our future products, if and when approved for commercial sale, cause serious or unexpected side effects, a number of potentially

significant negative consequences could result, including:

•

•

regulatory authorities may withdraw their approval of the product or impose restrictions on its distribution in the form of a modified risk evaluation and
mitigation strategy;

regulatory authorities may require the addition of labeling statements, such as warnings or contraindications;

• we may be required to change the way the product is administered or conduct additional clinical trials;

• we could be sued and held liable for harm caused to patients; or

•

our reputation may suffer.

Any of these events could prevent us or any future collaboration partners from achieving or maintaining market acceptance of the affected product and
could substantially increase the costs of commercializing our future products and impair our ability to generate revenues from the commercialization of these
products either on our own or with a collaboration partner.

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Even if we complete the necessary preclinical studies and clinical trials, we cannot predict whether or when we will obtain regulatory approval to
commercialize a product candidate and we cannot, therefore, predict the timing of any revenue from a future product.

Neither we nor any collaboration partner can commercialize a product until the appropriate regulatory authorities, such as the FDA, have reviewed and

approved the product candidate. The regulatory agencies may not complete their review processes in a timely manner, or we may not be able to obtain
regulatory approval. Additional delays may result if an FDA Advisory Committee recommends restrictions on approval or recommends non-approval. In
addition, we or a collaboration partner may experience delays or rejections based upon additional government regulation from future legislation or
administrative action, or changes in regulatory agency policy during the period of product development, clinical trials and the review process.

Even if we obtain regulatory approval for a product candidate, we will still face extensive regulatory requirements and our products may face future
development and regulatory difficulties.

Even if we obtain regulatory approval in the United States, the FDA may still impose significant restrictions on the indicated uses or marketing of our
product candidates, or impose ongoing requirements for potentially costly post-approval studies or post-market surveillance. The holder of an approved NDA is
obligated to monitor and report AEs and any failure of a product to meet the specifications in the NDA. The holder of an approved NDA must also submit new
or supplemental applications and obtain FDA approval for certain changes to the approved product, product labeling or manufacturing process. Advertising and
promotional materials must comply with FDA rules and are subject to FDA review, in addition to other potentially applicable federal and state laws.

In addition, drug product manufacturers and their facilities are subject to payment of user fees and continual review and periodic inspections by the FDA
and other regulatory authorities for compliance with GMP and adherence to commitments made in the NDA. If we or a regulatory agency discovers previously
unknown problems with a product such as AEs of unanticipated severity or frequency, or problems with the facility where the product is manufactured, a
regulatory agency may impose restrictions relative to that product or the manufacturing facility, including requiring recall or withdrawal of the product from the
market or suspension of manufacturing.

If we or a future collaboration partner fails to comply with applicable regulatory requirements following approval of any of our product candidates, a

regulatory agency may:

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•

•

issue a warning letter asserting that we are in violation of the law;

seek an injunction or impose civil or criminal penalties or monetary fines;

suspend or withdraw regulatory approval;

suspend any ongoing clinical trials;

refuse to approve a pending NDA or supplements to an NDA submitted by us;

seize product; or

refuse to allow us to enter into supply contracts, including government contracts.

Moreover, the FDA closely regulates the marketing, labeling, advertising and promotion of pharmaceutical products. A company can make only those

claims relating to safety and efficacy, purity and potency that are approved by the FDA and in accordance with the provisions of the approved label. Companies
may also share truthful and not misleading information that is otherwise consistent with the labeling. The FDA and other agencies actively enforce the laws and
regulations prohibiting the promotion of off-label uses. Failure to comply with these requirements can result in significant civil, criminal and administrative
penalties. Physicians may prescribe legally available products for uses that are not described in the product’s labeling and that differ from those tested by us and
approved by the FDA made in the physician’s independent medical judgement. Such off-label uses are common across medical specialties. Physicians may
believe that such off-label uses are the best treatment for many patients in varied circumstances. The FDA does not regulate the behavior of physicians in their
choice of treatments. The FDA does, however, restrict manufacturer’s communications on the subject of off-label use of their products.

Any government investigation of alleged violations of law could require us to expend significant time and resources in response and could generate
negative publicity. The occurrence of any event or penalty described above may inhibit our ability to commercialize our future products and generate revenues.

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We may not be successful in obtaining or maintaining necessary rights to microRNA targets, drug compounds and processes for our development
pipeline through acquisitions and in-licenses.

Presently, we have rights to the intellectual property, through licenses from third parties and under patents that we own, to modulate only a subset of the
known microRNA targets. Because our programs may involve a range of microRNA targets, including targets that require the use of proprietary rights held by
third parties, the growth of our business will likely depend in part on our ability to acquire, in-license or use these proprietary rights. In addition, our product
candidates may require specific formulations to work effectively and efficiently and these rights may be held by others. We may be unable to acquire or in-
license any compositions, methods of use, processes or other third-party intellectual property rights from third parties that we identify. The licensing and
acquisition of third-party intellectual property rights is a competitive area, and a number of more established companies are also pursuing strategies to license or
acquire third-party intellectual property rights that we may consider attractive. These established companies may have a competitive advantage over us due to
their size, cash resources and greater clinical development and commercialization capabilities.

For example, we may collaborate with U.S. and foreign academic institutions to accelerate our preclinical research or development under written
agreements with these institutions. Typically, these institutions provide us with an option to negotiate a license to any of the institution’s rights in technology
resulting from the collaboration. Regardless of such right of first negotiation for intellectual property, we may be unable to negotiate a license within the
specified time frame or under terms that are acceptable to us. If we are unable to do so, the institution may offer the intellectual property rights to other parties,
potentially blocking our ability to pursue our program.    

In addition, companies that perceive us to be a competitor may be unwilling to assign or license rights to us. We also may be unable to license or acquire

third-party intellectual property rights on terms that would allow us to make an appropriate return on our investment. If we are unable to successfully obtain
rights to required third-party intellectual property rights, our business, financial condition and prospects for growth could suffer.

We may use our financial and human resources to pursue a particular research program or product candidate and fail to capitalize on programs or
product candidates that may be more profitable or for which there is a greater likelihood of success.

Because we have limited financial and human resources, we may have to pursue collaboration agreements for the development and commercialization of
our programs and potential product candidates in indications with potentially large commercial markets, while focusing our internal development resources and
any internal sales and marketing organization that we may establish on research programs and product candidates for selected smaller markets, such as orphan
diseases. As a result, we may forego or delay pursuit of opportunities with other programs or product candidates or for other indications that later prove to have
greater commercial potential. Our resource allocation decisions may cause us to fail to capitalize on viable commercial products or profitable market
opportunities. Our spending on research and development programs and product candidates for specific indications may not yield any commercially viable
products. If we do not accurately evaluate the commercial potential or target market for a particular product candidate, we may relinquish valuable rights to that
product candidate through collaboration, licensing or other royalty arrangements in cases in which it would have been more advantageous for us to retain sole
development and commercialization rights to such product candidate, or we may allocate internal resources to a product candidate in a therapeutic area in which
it would have been more advantageous to enter into a partnering arrangement.

If we fail to comply with environmental, health and safety laws and regulations, we could become subject to fines or penalties or incur costs that could
have a material adverse effect on the success of our business.

We are subject to numerous environmental, health and safety laws and regulations, including those governing laboratory procedures and the handling, use,

storage, treatment and disposal of hazardous materials and wastes. Our operations involve the use of hazardous and flammable materials, including chemicals
and biological materials. Our operations also produce hazardous waste products. We generally contract with third parties for the disposal of these materials and
wastes. We cannot eliminate the risk of contamination or injury from these materials. In the event of contamination or injury resulting from our use of hazardous
materials, we could be held liable for any resulting damages, and any liability could exceed our resources. We also could incur significant costs associated with
civil or criminal fines and penalties.

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Although we maintain workers’ compensation insurance to cover us for costs and expenses we may incur due to injuries to our employees resulting from
the use of hazardous materials or other work-related injuries, this insurance may not provide adequate coverage against potential liabilities. In addition, we may
incur substantial costs in order to comply with current or future environmental, health and safety laws and regulations. These current or future laws and
regulations may impair our research, development or production efforts. Failure to comply with these laws and regulations also may result in substantial fines,
penalties or other sanctions.

RISKS RELATED TO OUR FINANCIAL CONDITION AND NEED FOR ADDITIONAL CAPITAL

We will need to raise additional capital to develop our product candidates and implement our operating plans, and if we are unable to do so when
needed, we will not be able to complete the development and commercialization of our product candidates.

As of December 31, 2023, we had approximately $23.8 million of cash and cash equivalents and we had $2.7 million of outstanding debt obligations
(which includes $1.4 million of outstanding principal and $1.3 million of final payment and loan amendment fees) under our Term Loan with the Lender, which
we borrowed under the Loan Agreement. In March 2024, we raised approximately $94.0 million in net proceeds from the sale of our common stock and non-
voting convertible preferred stock in a private placement financing, after deducting placement agent and financial advisor fees and other financing expenses. We
believe our existing resources will be sufficient to fund our planned operations and expenditures for at least the next 12 months. We will need to raise additional
capital in the future to fund our operations, and if we are unable to raise additional capital when needed, we will not be able to continue as a going concern.

Developing pharmaceutical products, including conducting preclinical studies and clinical trials, is expensive. We expect our research and development

expenses to substantially increase in connection with our ongoing activities, particularly as we advance our product candidates towards or through clinical trials.
We will need to raise additional capital to fund our operations and such funding may not be available to us on acceptable terms, or at all.

For the foreseeable future, we expect to rely primarily on equity and/or debt financings to fund our operations. If there is volatility in the equity markets, it
may create additional challenges to raising sufficient additional capital through an equity or equity-linked financing. Raising additional capital through the sale
of securities could cause significant dilution to our stockholders.

Any additional fundraising efforts may divert our management from their day-to-day activities, which may adversely affect our ability to develop and

commercialize our product candidates. Our ability to raise additional funds will depend, in part, on the success of our preclinical studies and clinical trials and
other product development activities, regulatory events, our ability to identify and enter into licensing or other strategic arrangements, and other events or
conditions that may affect our value or prospects, as well as factors related to financial, economic and market conditions, many of which are beyond our control.
There can be no assurances that sufficient funds will be available to us when required or on acceptable terms, if at all.

If we are unable to raise additional capital when required or on acceptable terms, we may be required to:

•

•

•

•

•

significantly delay, scale back or discontinue the development or commercialization of any future product candidates;

seek collaborations, or amend existing collaborations, for research and development programs at an earlier stage than otherwise would be desirable or
for the development of programs that we otherwise would have sought to develop independently, or on terms that are less favorable than might
otherwise be available;

dispose of technology assets, or relinquish or license on unfavorable terms, our rights to technologies or any future product candidates that we
otherwise would seek to develop or commercialize ourselves;

pursue the sale of our company to a third party at a price that may result in a loss on investment for our stockholders; or

file for bankruptcy or cease operations altogether.

Any of these events could have a material adverse effect on our business, operating results and prospects.

Payments under the instruments governing our indebtedness may reduce our working capital. In addition, a default under our loan and security
agreement could cause a material adverse effect on our financial position.

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In June 2016, we entered into a Loan Agreement with the Lender. Under the terms of the Loan Agreement, the Lender provided us with a $20.0 million
Term Loan. Our obligations under the Loan Agreement are secured by a first priority security interest in substantially all of our current and future assets. We
have also agreed not to encumber our intellectual property assets, except as permitted by the Loan Agreement. Our required monthly payments to the Lender
were comprised of interest only through and including the payment made in December 2022. We resumed making principal payments in January 2023. Under
the terms of the Loan Agreement, we are required to maintain a cash balance of no less than $5.0 million. We are in compliance with all Loan Agreement
covenants as of the date of the filing of this Form 10-K.

Amounts outstanding under the Term Loan mature on May 1, 2024.

The Loan Agreement requires us, and any debt arrangements we may enter into in the future may require us, to comply with various covenants that limit

our ability to, among other things:

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•

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•

 dispose of assets;

 complete mergers or acquisitions;

 incur indebtedness;

 encumber assets;

 pay dividends or make other distributions to holders of our capital stock;

 make specified investments; and

 engage in transactions with our affiliates.

These restrictions could inhibit our ability to pursue our business strategies. If we default under our obligations under the Loan Agreement, including as a

result of a "material adverse change," the lender could proceed against the collateral granted to it to secure our indebtedness or declare all obligation under the
Loan Agreement to be due and payable. The definition of “material adverse change” is broad and includes a material impairment in the value of the collateral
securing the Term Loan, a material adverse change in our business, operations, or condition (financial or otherwise), and a material impairment of the prospect
of repayment of any portion of the Term Loan. Moreover, the determination by the lender as to whether a “material adverse change” has occurred is not within
our control. In certain circumstances, procedures by the lenders could result in a loss by us of all of our equipment and inventory, which are included in the
collateral granted to the lenders. If any indebtedness under the Loan Agreement were to be accelerated, there can be no assurance that our assets would be
sufficient to repay in full that indebtedness. In addition, upon any distribution of assets pursuant to any liquidation, insolvency, dissolution, reorganization or
similar proceeding, the holders of secured indebtedness will be entitled to receive payment in full from the proceeds of the collateral securing our secured
indebtedness before the holders of other indebtedness or our common stock will be entitled to receive any distribution with respect thereto.

We may incur additional indebtedness in the future. The debt instruments governing such indebtedness may contain provisions that are as, or more,

restrictive than the provisions governing our existing indebtedness under the Loan Agreement. If we are unable to repay, refinance or restructure our
indebtedness when payment is due, the lenders could proceed against the collateral or force us into bankruptcy or liquidation.

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

Since inception, our operations have been primarily limited to acquiring and in-licensing intellectual property rights, developing our microRNA product

platform, undertaking basic research around microRNA targets and conducting preclinical and clinical studies for our initial programs. We have not yet obtained
regulatory approval for any product candidates. Consequently, any predictions about our future success or viability, or any evaluation of our business and
prospects, may not be accurate.

We have incurred losses in each year since our inception in September 2007. Our net loss was $30.0 million and $28.3 million for the years ended

December 31, 2023 and 2022, respectively. As of December 31, 2023, we had an accumulated deficit of $513.2 million.

We have devoted most of our financial resources to research and development, including our preclinical and clinical development activities. To date, we
have financed our operations primarily through the sale of equity securities and convertible debt, through our Term Loan and from revenue received from our
former collaboration partners.

The size of our future net losses will depend, in part, on the rate of future expenditures and our ability to obtain funding through equity or debt financings,

collaborations or grants. We initiated clinical development of RGLS8429 in the second

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quarter of 2022. Even if we or a future collaboration partner successfully obtains regulatory approval to market a product candidate, our revenues will also
depend upon the size of any markets in which our product candidates have received market approval, and our ability to achieve sufficient market acceptance and
adequate market share for our products.

We expect to continue to incur significant expenses and increasing operating losses for the foreseeable future. The net losses we incur may fluctuate
significantly from quarter to quarter. We anticipate that our expenses will increase substantially if and as we: continue our research and preclinical and clinical
development of our product candidates, both independently and under any future collaboration agreements; seek to identify additional microRNA targets and
product candidates; acquire or in-license other products and technologies; continue with clinical development of our product candidates; seek marketing
approvals for our product candidates that successfully complete clinical trials; ultimately establish a sales, marketing and distribution infrastructure to
commercialize any products for which we may obtain marketing approval; maintain, expand and protect our intellectual property portfolio; hire additional
clinical, regulatory, research and administrative personnel; and create additional infrastructure to support our operations and our product development and
planned future commercialization efforts.

We have never generated any revenue from product sales and may never be profitable.

Our ability to generate revenue and achieve profitability depends on our ability, alone or with collaboration partners, to successfully complete the
development of, obtain the necessary regulatory approvals for and commercialize product candidates. We do not anticipate generating revenues from sales of
products for the foreseeable future, if ever. Our ability to generate future revenues from product sales depends heavily on our success in:

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identifying and validating new microRNAs as therapeutic targets;

completing our research and preclinical development of product candidates;

initiating and completing clinical trials for product candidates;

seeking and obtaining marketing approvals for product candidates that successfully complete clinical trials;

establishing and maintaining supply and manufacturing relationships with third parties;

launching and commercializing product candidates for which we obtain marketing approval, with a collaboration partner or, if launched independently,
successfully establishing a sales force, marketing and distribution infrastructure;

• maintaining, protecting and expanding our intellectual property portfolio; and

•

attracting, hiring and retaining qualified personnel.

Because of the numerous risks and uncertainties associated with pharmaceutical product development, we are unable to predict the timing or amount of

increased expenses and when we will be able to achieve or maintain profitability, if ever. In addition, our expenses could increase beyond expectations if we are
required by the FDA or foreign regulatory agencies to perform studies and trials in addition to those that we currently anticipate.

Even if one or more of the product candidates that we independently develop is approved for commercial sale, we anticipate incurring significant costs
associated with commercializing any approved product. Even if we are able to generate revenues from the sale of any approved products, we may not become
profitable and may need to obtain additional funding to continue operations.

RISKS RELATED TO OUR RELIANCE ON THIRD PARTIES

We may depend upon collaborations for the development and eventual commercialization of certain microRNA product candidates. If these
collaborations are unsuccessful or are terminated, we may be unable to commercialize certain product candidates and we may be unable to generate
revenues from our development programs.

We may depend upon third party collaboration partners for financial and scientific resources for the clinical development and commercialization of
certain of our microRNA product candidates. These collaborations will likely provide us with limited control over the course of development of a microRNA
product candidate, especially once a candidate has reached the stage of clinical development.

Our ability to recognize revenues from successful collaborations may be impaired by several factors including:

•

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

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a collaboration partner may cease development in therapeutic areas which are the subject of the collaboration;

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

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

a collaboration partner could develop a product that competes, either directly or indirectly, with a collaboration product;

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

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

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

a dispute may arise between us and a collaboration partner concerning the research, development or commercialization of a program or product
candidate resulting in a delay in milestones, royalty payments or termination of a program and possibly resulting in costly litigation or arbitration
which may divert management attention and resources; and

a collaboration partner may use our proprietary information or intellectual property in such a way as to invite litigation from a third party or fail to
maintain or prosecute intellectual property rights such that our rights in such property are jeopardized.

We rely on third parties to conduct some aspects of our compound formulation, research and preclinical studies, and those third parties may not
perform satisfactorily, including failing to meet deadlines for the completion of such formulation, research or testing.

We do not expect to independently conduct all aspects of our drug discovery activities, compound formulation research or preclinical studies of product

candidates. We currently rely and expect to continue to rely on third parties to conduct some aspects of our preclinical studies and formulation development.

Any of these third parties may terminate their engagements with us at any time. If we need to enter into alternative arrangements, it would delay our
product development activities. Our reliance on these third parties for research and development activities will reduce our control over these activities but will
not relieve us of our responsibilities. For example, for product candidates that we develop and commercialize on our own, we will remain responsible for
ensuring that each of our IND-enabling studies and clinical trials are conducted in accordance with the study plan and protocols for the trial.

If these third parties do not successfully carry out their contractual duties, meet expected deadlines or conduct our studies in accordance with regulatory

requirements or our stated study plans and protocols, we will not be able to complete, or may be delayed in completing, the necessary preclinical studies to
enable us or any future collaboration partners to select viable product candidates for IND submissions and will not be able to, or may be delayed in our efforts
to, successfully develop and commercialize such product candidates.

We rely on third-party manufacturers to produce our preclinical and clinical product candidates, and we intend to rely on third parties to produce
future clinical supplies of product candidates that we advance into clinical trials and commercial supplies of any approved product candidates.

Reliance on third-party manufacturers entails risks, including risks that we would not be subject to if we manufactured the product candidates ourselves,

including:

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•

the inability to meet any product specifications and quality requirements consistently;

a delay or inability to procure or expand sufficient manufacturing capacity;

• manufacturing and product quality issues related to scale-up of manufacturing;

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costs and validation of new equipment and facilities required for scale-up;

a failure to comply with cGMP and similar foreign standards;

the inability to negotiate manufacturing or supply agreements with third parties under commercially reasonable terms;

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termination or nonrenewal of manufacturing agreements with third parties in a manner or at a time that is costly or damaging to us;

the reliance on a limited number of sources, and in some cases, single sources for raw materials, such that if we are unable to secure a sufficient supply
of these product components, we will be unable to manufacture and sell future product candidates in a timely fashion, in sufficient quantities or under
acceptable terms;

the lack of qualified backup suppliers for any raw materials that are currently purchased from a single source supplier;

operations of our third-party manufacturers or suppliers could be disrupted by conditions unrelated to our business or operations, including the
bankruptcy of the manufacturer or supplier;

carrier disruptions or increased costs that are beyond our control;

disruptions caused by man-made or natural disasters or public health pandemics or epidemics or other business interruptions; and

the failure to deliver products under specified storage conditions and in a timely manner.

Any of these events could lead to clinical study delays or failure to obtain regulatory approval, or impact our ability to successfully commercialize future

products. Some of these events could be the basis for FDA action, including injunction, recall, seizure or total or partial suspension of production.

We rely on limited sources of supply for the drug substance of product candidates and any disruption in the chain of supply may cause a delay in
developing and commercializing these product candidates.

We have established manufacturing relationships with a limited number of suppliers to manufacture raw materials and the drug substance of any product

candidate for which we are responsible for preclinical or clinical development. Each supplier may require licenses to manufacture such components if such
processes are not owned by the supplier or in the public domain. As part of any marketing approval, a manufacturer and its processes are required to be
qualified by the FDA prior to commercialization. If supply from the approved vendor is interrupted, there could be a significant disruption in commercial
supply. An alternative vendor would need to be qualified through an NDA supplement which could result in further delay. The FDA or other regulatory agencies
outside of the United States may also require additional studies if a new supplier is relied upon for commercial production. Switching vendors may involve
substantial costs and is likely to result in a delay in our desired clinical and commercial timelines.

In addition, if any future collaboration partners elect to pursue the development and commercialization of certain programs, we will lose control over the

manufacturing of the product candidate subject to the agreement.

These factors could cause the delay of clinical trials, regulatory submissions, required approvals or commercialization of our product candidates, delay
milestone payments owed to us or cause us to incur higher costs and prevent us from commercializing our products successfully. Furthermore, if our suppliers
fail to deliver the required commercial quantities of active pharmaceutical ingredients on a timely basis and at commercially reasonable prices, and we are
unable to secure one or more replacement suppliers capable of production in a timely manner at a substantially equivalent cost, our clinical trials may be
delayed or we could lose potential revenue.

Manufacturing issues may arise that could increase product and regulatory approval costs or delay commercialization.

As we scale-up manufacturing of product candidates and conduct required stability testing, product, packaging, equipment and process-related issues may

require refinement or resolution in order to proceed with any clinical trials and obtain regulatory approval for commercial marketing. We may identify
significant impurities, which could result in increased scrutiny by the regulatory agencies, delays in clinical programs and regulatory approval, increases in our
operating expenses, or failure to obtain or maintain approval for product candidates or any approved products.

We rely on third parties to conduct, supervise and monitor our clinical trials, and if those third parties perform in an unsatisfactory manner, it may
harm our business.

We rely, and any future collaboration partners may rely, on CROs and clinical trial sites to ensure the proper and timely conduct of our clinical trials.

While we will have agreements governing their activities, we have limited influence over their actual performance. We control only certain aspects of our
CROs’ activities. Nevertheless, we are responsible for ensuring that each of our clinical trials are conducted in accordance with the applicable protocol, legal,
regulatory and scientific standards and our reliance on the CROs does not relieve us of our regulatory responsibilities.

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We, any future collaboration partners and our CROs are required to comply with the FDA’s or other regulatory agency’s GCPs for conducting, recording
and reporting the results of IND-enabling studies and clinical trials to assure that data and reported results are credible and accurate and that the rights, integrity
and confidentiality of clinical trial participants are protected. The FDA and non-U.S. regulatory agencies enforce these GCPs through periodic inspections of
trial sponsors, principal investigators and clinical trial sites. If we or our CROs fail to comply with applicable GCPs, the clinical data generated in our clinical
trials may be deemed unreliable and the FDA or applicable non-U.S. regulatory agency may require us to perform additional clinical trials before approving any
marketing applications for the relevant jurisdiction. Upon inspection, the FDA or applicable non-U.S. regulatory agency may determine that our clinical trials
did not comply with GCPs. In addition, our clinical trials will require a sufficiently large number of test subjects to evaluate the safety and effectiveness of a
potential drug product. Accordingly, if our CROs fail to comply with these regulations or fail to recruit a sufficient number of patients, we may be required to
repeat such clinical trials, which would delay the regulatory approval process.

Our CROs will not be our employees, and we will not be able to control whether or not they devote sufficient time and resources to our clinical and

nonclinical programs. These CROs may also have relationships with other commercial entities, including our competitors, for whom they may also be
conducting clinical trials, or other drug development activities which could harm our competitive position. If our CROs do not successfully carry out their
contractual duties or obligations, fail to meet expected deadlines, or if the quality or accuracy of the clinical data they obtain is compromised due to the failure
to adhere to our clinical protocols or regulatory requirements, or for any other reasons, our clinical trials may be extended, delayed or terminated, and we may
not be able to obtain regulatory approval for, or successfully commercialize our product candidates. As a result, our financial results and the commercial
prospects for such products and any product candidates that we develop would be harmed, our costs could increase, and our ability to generate revenues could
be delayed.                

We also rely on other third parties to store and distribute drug products for any clinical trials that we may conduct. Any performance failure on the part of
our distributors could delay clinical development or marketing approval of our product candidates or commercialization of our products, if approved, producing
additional losses and depriving us of potential product revenue.

RISKS RELATED TO OUR INTELLECTUAL PROPERTY

If we are unable to obtain or protect intellectual property rights related to our future products and product candidates, we may not be able to compete
effectively in our markets.

We rely upon a combination of patents, trade secret protection and confidentiality agreements to protect the intellectual property related to our future
products and product candidates. The strength of patents in the biotechnology and pharmaceutical field involves complex legal and scientific questions and can
be uncertain. The patent applications that we own or in-license may fail to result in patents with claims that cover the products in the United States or in other
countries. There is no assurance that all of the potentially relevant prior art relating to our patents and patent applications has been found; such prior art can
invalidate a patent or prevent a patent from issuing based on a pending patent application. Even if patents do successfully issue, third parties may challenge their
validity, enforceability or scope, which may result in such patents being narrowed or invalidated. Furthermore, even if they are unchallenged, our patents and
patent applications may not adequately protect our intellectual property or prevent others from designing around our claims.

If the patent applications we hold or have in-licensed with respect to our programs or product candidates fail to issue or if their breadth or strength of
protection is threatened, it could dissuade companies from collaborating with us to develop product candidates, and threaten our ability to commercialize, future
products. We cannot offer any assurances about which, if any, patents will issue or whether any issued patents will be found invalid and unenforceable or will be
threatened by third parties. A patent may be challenged through one or more of several administrative proceedings including post-grant challenges, re-
examination or opposition before the U.S. PTO or foreign patent offices. Any successful challenge of patents or any other patents owned by or licensed to us
could deprive us of rights necessary for the successful commercialization of any product candidates that we or any future collaboration partners may develop.

Since patent applications in the United States and most other countries are confidential for a period of time after filing, and some remain so until issued,

we cannot be certain that we were the first to file any patent application related to a product candidate. Furthermore, in certain situations, if we and one or more
third parties have filed patent applications in the United States and claiming the same subject matter, an administrative proceeding, known as an interference,
can be initiated to determine which applicant is entitled to the patent on that subject matter. Such an interference proceeding provoked by third parties or
brought by us may be necessary to determine the priority of inventions with respect to our patents or patent applications, or those of licensors or any future
collaboration partners. An unfavorable outcome could require us to cease using the related technology or to attempt to license rights to it from the prevailing
party. Our business could be harmed if the prevailing party does not offer us a license on commercially reasonable terms. Our defense of a patent or patent
application in

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such a proceeding may not be successful and, even if successful, may result in substantial costs and distract our management and other employees.

In addition, patents have a limited lifespan. In the United States, the natural expiration of a patent is generally 20 years after it is filed. Various extensions

may be available however the life of a patent, and the protection it affords, is limited. Once the patent life has expired for a product, we may be open to
competition from generic medications. Further, if we encounter delays in regulatory approvals, the period of time during which we could market a product
candidate under patent protection could be reduced.

In addition to the protection afforded by patents, we rely on trade secret protection and confidentiality agreements to protect proprietary know-how that is

not patentable, processes for which patents are difficult to enforce and any other elements of our drug discovery and development processes that involve
proprietary know-how, information or technology that is not covered by patents. Although each of our employees agrees to assign their inventions to us through
an employee inventions agreement, and all of our employees, consultants, advisors and any third parties who have access to our proprietary know-how,
information or technology to enter into confidentiality agreements, we cannot provide any assurances that all such agreements have been duly executed or that
our trade secrets and other confidential proprietary information will not be disclosed or that competitors will not otherwise gain access to our trade secrets or
independently develop substantially equivalent information and techniques. In addition, others may independently discover our trade secrets and proprietary
information.

Further, the laws of some foreign countries do not protect proprietary rights to the same extent or in the same manner as the laws of the United States. As

a result, we may encounter significant problems in protecting and defending our intellectual property both in the United States and abroad. If we are unable to
prevent material disclosure of the non-patented intellectual property related to our technologies to third parties, and there is no guarantee that we will have any
such enforceable trade secret protection, we may not be able to establish or maintain a competitive advantage in our market, which could materially adversely
affect our business, results of operations and financial condition.

Third-party claims of intellectual property infringement may prevent or delay our development and commercialization efforts.

Our commercial success depends in part on our avoiding infringement of the patents and proprietary rights of third parties. There is a substantial amount

of litigation, both within and outside the United States, involving patent and other intellectual property rights in the biotechnology and pharmaceutical
industries, including patent infringement lawsuits. Numerous U.S. and foreign issued patents and pending patent applications, which are owned by third parties,
exist in the fields in which we are pursuing development candidates. As the biotechnology and pharmaceutical industries expand and more patents are issued,
the risk increases that our product candidates may be subject to claims of infringement of the patent rights of third parties.

Third parties may assert that we are employing their proprietary technology without authorization. There may be third-party patents or patent applications

with claims to materials, formulations, methods of manufacture or methods for treatment related to the use or manufacture of our product candidates. Because
patent applications can take many years to issue, there may be currently pending patent applications which may later result in patents that our product
candidates may infringe. In addition, third parties may obtain patents in the future and claim that use of our technologies infringes upon these patents. If any
third-party patents were held by a court of competent jurisdiction to cover the manufacturing process of any of our product candidates, any molecules formed
during the manufacturing process or any final product itself, the holders of any such patents may be able to block our ability to commercialize such product
candidate unless we obtained a license under the applicable patents, or until such patents expire. Similarly, if any third-party patents were held by a court of
competent jurisdiction to cover aspects of our formulations, processes for manufacture or methods of use, including combination therapy, the holders of any
such patents may be able to block our ability to develop and commercialize the applicable product candidate unless we obtained a license or until such patent
expires. In either case, such a license may not be available on commercially reasonable terms or at all.

Parties making claims against us may obtain injunctive or other equitable relief, which could effectively block our ability to further develop and

commercialize one or more of our product candidates. Defense of these claims, regardless of their merit, would involve substantial litigation expense and would
be a substantial diversion of employee resources from our business. In the event of a successful claim of infringement against us, we may have to pay
substantial damages, including treble damages and attorneys’ fees for willful infringement, pay royalties, redesign our infringing products or obtain one or more
licenses from third parties, which may be impossible or require substantial time and monetary expenditure.

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If we fail to comply with our obligations in the agreements under which we license intellectual property rights from third parties or otherwise
experience disruptions to our business relationships with our licensors, we could lose license rights that are important to our business.

We are a party to a number of intellectual property license agreements that are important to our business and expect to enter into additional license
agreements in the future. Our existing license agreements impose, and we expect that future license agreements will impose, various diligence, milestone
payment, royalty and other obligations on us. For example, our exclusive license agreements with our founding companies, Alnylam and Ionis, provide us with
rights to nucleotide technologies in the field of microRNA therapeutics based on oligonucleotides that modulate microRNAs. Some of these technologies, such
as intellectual property relating to the chemical modification of oligonucleotides, are relevant to our product candidate development programs. If our license
agreements with Alnylam or Ionis are terminated, or our business relationships with either of these companies or our other licensors are disrupted by events that
may include the acquisition of either company, our access to critical intellectual property rights will be materially and adversely affected.

We may need to obtain licenses from third parties to advance our research or allow commercialization of our product candidates, and we have done so

from time to time. We may fail to obtain any of these licenses at a reasonable cost or on reasonable terms, if at all. In that event, we would be unable to further
develop and commercialize one or more of our product candidates, which could harm our business significantly. We cannot provide any assurances that third-
party patents do not exist which might be enforced against our future products, resulting in either an injunction prohibiting our sales, or, with respect to our
sales, an obligation on our part to pay royalties and/or other forms of compensation to third parties.

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

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

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

Our defense in a litigation may fail and, even if successful, may result in substantial costs and distract our management and other employees. We may not

be able to prevent, alone or with our licensors, misappropriation of our intellectual property rights, particularly in countries where the laws may not protect
those rights as fully as in the United States.

Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation, there is a risk that some of our

confidential information could be compromised by disclosure during this type of litigation. There could also be public announcements of the results of hearings,
motions or other interim proceedings or developments. If securities analysts or investors perceive these results to be negative, it could have a material adverse
effect on the price of our common stock.

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

We employ individuals who were previously employed at other biotechnology or pharmaceutical companies. We may be subject to claims that we or our

employees, consultants or independent contractors 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 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.

RISKS RELATED TO COMMERCIALIZATION OF PRODUCT CANDIDATES

We face significant competition from other biotechnology and pharmaceutical companies and our operating results will suffer if we fail to compete
effectively.

The biotechnology and pharmaceutical industries are intensely competitive. We have competitors both in the United States and internationally, including

major multinational pharmaceutical companies, biotechnology companies and universities and other research institutions. Our competitors may have
substantially greater financial, technical and other resources, such as

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larger research and development staff and experienced marketing and manufacturing organizations. Additional mergers and acquisitions in the biotechnology
and pharmaceutical industries may result in even more resources being concentrated in our competitors. Competition may increase further as a result of
advances in the commercial applicability of technologies and greater availability of capital for investment in these industries. Our competitors may succeed in
developing, acquiring or licensing on an exclusive basis, drug products that are more effective or less costly than any product candidate that we may develop.    

Most of our programs are targeted toward indications for which there are approved products on the market or product candidates in clinical development.
We will face competition from other drugs currently approved or that will be approved in the future for the same therapeutic indications. Our ability to compete
successfully will depend largely on our ability to leverage our experience in drug discovery and development to:

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discover and develop therapeutics that are superior to other products in the market;

attract qualified scientific, product development and commercial personnel;

obtain patent and/or other proprietary protection for our microRNA product platform and future product candidates;

obtain required regulatory approvals; and
successfully collaborate with pharmaceutical companies in the discovery, development and commercialization of new therapeutics.

The availability of our competitors’ products could limit the demand, and the price we are able to charge, for any products that we may develop and
commercialize. We will not achieve our business plan if the acceptance of any of these products is inhibited by price competition or the reluctance of physicians
to switch from existing drug products to our products, or if physicians switch to other new drug products or choose to reserve our future products for use in
limited circumstances. The inability to compete with existing or subsequently introduced drug products would have a material adverse impact on our business,
financial condition and prospects.

Established pharmaceutical companies may invest heavily to accelerate discovery and development of novel compounds or to in-license novel compounds

that could make our product candidates less competitive. In addition, any new product that competes with an approved product must demonstrate compelling
advantages in efficacy, convenience, tolerability and safety in order to overcome price competition and to be commercially successful. Accordingly, our
competitors may succeed in obtaining patent protection, receiving FDA approval or discovering, developing and commercializing product candidates before we
do, which would have a material adverse impact on our business.

The commercial success of our product candidates will depend upon the acceptance of these product candidates by the medical community, including
physicians, patients and healthcare payors.

The degree of market acceptance of any product candidates will depend on a number of factors, including:

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demonstration of clinical safety and efficacy compared to other products;

the relative convenience, ease of administration and acceptance by physicians, patients and healthcare payors;

the prevalence and severity of any AEs;

limitations or warnings contained in the FDA-approved label for such products;

availability of alternative treatments;

pricing and cost-effectiveness;

the effectiveness of our or any collaborators’ sales and marketing strategies;

our ability to obtain hospital formulary approval;

our ability to obtain and maintain sufficient third party coverage and adequate reimbursement; and

the willingness of patients to pay out-of-pocket in the absence of third party coverage.

Unless other formulations are developed in the future, we expect our compounds to be formulated in an injectable form. Injectable medications may be
disfavored by patients or their physicians in the event drugs which are easy to administer, such as oral medications, are available. If a product is approved, but
does not achieve an adequate level of acceptance by physicians,

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patients and healthcare payors, we may not generate sufficient revenues from such product and we may not become or remain profitable.

If we are unable to establish sales and marketing capabilities or enter into agreements with third parties to market and sell our product candidates, we
may be unable to generate any revenues.

We currently do not have an organization for the sales, marketing and distribution of pharmaceutical products and the cost of establishing and maintaining

such an organization may exceed the cost-effectiveness of doing so. In order to market any products that may be approved, we must build our sales, marketing,
managerial and other non-technical capabilities or make arrangements with third parties to perform these services. With respect to certain of our current
programs as well as future programs, we may rely completely on a collaboration partner for sales and marketing. In addition, we intend to enter into
collaborations with third parties to commercialize other product candidates, including in markets outside of the United States or for other large markets that are
beyond our resources. Although we intend to establish a sales organization if we are able to obtain approval to market any product candidates for niche markets
in the United States, we will also consider the option to enter into collaborations for future product candidates in the United States if commercialization
requirements exceed our available resources. This will reduce the revenue generated from the sales of these products.

Any future collaboration partners may not dedicate sufficient resources to the commercialization of our product candidates or may otherwise fail in their

commercialization due to factors beyond our control. If we are unable to establish effective collaborations to enable the sale of our product candidates to
healthcare professionals and in geographical regions, including the United States, that will not be covered by our own marketing and sales force, or if our
potential future collaboration partners do not successfully commercialize the product candidates, our ability to generate revenues from product sales will be
adversely affected.

If we are unable to establish adequate sales, marketing and distribution capabilities, whether independently or with third parties, we may not be able to

generate sufficient product revenue and may not become profitable. We will be competing with many companies that currently have extensive and well-funded
marketing and sales operations. Without an internal team or the support of a third party to perform marketing and sales functions, we may be unable to compete
successfully against these more established companies.

If we obtain approval to commercialize any approved products outside of the United States, a variety of risks associated with international operations
could materially adversely affect our business.

If any product candidates that we develop are approved for commercialization, we may also enter into agreements with third parties to market them on a

worldwide basis or in more limited geographical regions. We expect that we will be subject to additional risks related to entering into international business
relationships, including:

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different regulatory requirements for drug approvals in foreign countries;

different payor reimbursement regimes, governmental payors or patient self-pay systems and price controls;

reduced protection for intellectual property rights;

unexpected changes in tariffs, trade barriers and regulatory requirements;

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

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

foreign taxes, including withholding of payroll taxes;

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

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

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

business interruptions resulting from geopolitical actions, including war and terrorism, natural disasters, including earthquakes, typhoons, floods and
fires, public health pandemics or epidemics or other business interruptions.

Coverage and adequate reimbursement may not be available for our product candidates, which could make it difficult for us to sell products
profitably.

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Market acceptance and sales of any product candidates that we develop will depend on coverage and reimbursement policies and may be affected by

future healthcare reform measures. Government authorities and third party payors, such as private health insurers, government payors and health maintenance
organizations, decide which drugs they will pay for and establish reimbursement levels. We cannot be sure that coverage and adequate reimbursement will be
available for any future product candidates. Also, inadequate reimbursement amounts may reduce the demand for, or the price of, our future products. Further,
one payor’s determination to provide coverage for a product does not assure that other payors will also provide coverage for the product. If reimbursement is not
available, or is available only at limited levels, we may not be able to successfully commercialize product candidates that we develop. Even if favorable
coverage and reimbursement status is attained for one or more products for which we or our collaborators receive regulatory approval, less favorable coverage
policies and reimbursement rates may be implemented in the future.

In addition, we cannot be certain if and when we will obtain formulary approval to allow us to sell any products that we may develop and commercialize

into our target markets. Obtaining formulary approval from hospitals and from payors can be an expensive and time-consuming process. Failure to obtain timely
formulary approval will limit our commercial success.

There have been a number of legislative and regulatory proposals to change the healthcare system in the United States and in some foreign jurisdictions

that could affect our ability to sell products profitably. These legislative and/or regulatory changes may negatively impact the reimbursement for drug products,
following approval. The availability of numerous generic treatments may also substantially reduce the likelihood of reimbursement for our future products. The
potential application of user fees to generic drug products may expedite the approval of additional generic drug treatments. We expect to experience pricing
pressures in connection with the sale of any products that we develop, due to the trend toward managed healthcare, the increasing influence of health
maintenance organizations and additional legislative changes. If we fail to successfully secure and maintain reimbursement coverage for our future products or
are significantly delayed in doing so, we will have difficulty achieving market acceptance of our future products and our business will be harmed.

In addition, in some non-U.S. jurisdictions, 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 EU provides options for its member states to restrict the range of medicinal
products for which their national health insurance systems provide reimbursement and to control the prices of medicinal products for human use. A member
state may approve a specific price for the medicinal product or it may instead adopt a system of direct or indirect controls on the profitability of the company
placing the medicinal product on the market. There can be no assurance that any country that has price controls or reimbursement limitations for pharmaceutical
products will allow favorable reimbursement and pricing arrangements for any of our products. Historically, products launched in the EU do not follow price
structures of the U.S. and generally tend to be priced significantly lower.

RISKS RELATED TO OUR BUSINESS OPERATIONS AND INDUSTRY

Our future success depends on our ability to retain key executives and to attract, retain and motivate qualified personnel.

We are highly dependent on principal members of our executive team, the loss of whose services may adversely impact the achievement of our objectives.

While we have entered into employment agreements with each of our executive officers, any of them could leave our employment at any time, as all of our
employees are “at will” employees. Recruiting and retaining other qualified employees for our business, including scientific and technical personnel, will also
be critical to our success. There is currently a shortage of skilled executives in our industry, which is likely to continue. As a result, competition for skilled
personnel is intense and the turnover rate can be high. We may not be able to attract and retain personnel on acceptable terms given the competition among
numerous pharmaceutical companies for individuals with similar skill sets. In addition, failure to succeed in preclinical studies and clinical trials may make it
more challenging to recruit and retain qualified personnel. The inability to recruit or loss of the services of any executive or key employee might impede the
progress of our research, development and commercialization objectives.

We may need to expand our organization and may experience difficulties in managing this growth, which could disrupt our operations.

As of December 31, 2023, we had 30 employees, all of which were full-time employees. In the future, we may need to expand our organization.

Future growth would impose significant additional responsibilities on our management, including the need to identify, recruit, maintain, motivate and
integrate additional employees, consultants and contractors. Also, our management may need to divert a disproportionate amount of its attention away from our
day-to-day activities and devote a substantial amount of time to

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managing these growth activities. We may not be able to effectively manage the expansion of our operations, which may result in weaknesses in our
infrastructure, give rise to operational mistakes, loss of business opportunities, loss of employees and reduced productivity among remaining employees. Our
expected growth could require significant capital expenditures and may divert financial resources from other projects, such as the development of additional
product candidates. Moreover, if our management is unable to effectively manage our growth, our expenses may increase more than expected, our ability to
generate and/or grow revenues could be reduced, and we may not be able to implement our business strategy. Our future financial performance and our ability
to commercialize product candidates and compete effectively will depend, in part, on our ability to effectively manage any future growth.

Our 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 the
regulations of the FDA and non-U.S. regulators, provide accurate information to the FDA and non-U.S. regulators, comply with healthcare fraud and abuse laws
and regulations in the United States and abroad, report financial information or data accurately or disclose unauthorized activities to us. In particular, sales,
marketing and business arrangements in the healthcare industry are subject to extensive laws and regulations intended to prevent fraud, misconduct, kickbacks,
self-dealing and other abusive practices. 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 cause serious harm to our reputation. We have adopted a code of 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 risks or losses or in protecting us from governmental investigations or other actions or lawsuits stemming from a failure to
comply with these laws or regulations. If any such actions are instituted against us, and we are not successful in defending ourselves or asserting our rights,
those actions could have a significant impact on our business, including the imposition of significant civil, criminal and administrative sanctions.

We may undertake internal restructuring activities that could result in disruptions to our business or otherwise materially harm our results of
operations or financial condition.

From time to time we may undertake internal restructuring activities as we continue to evaluate and attempt to optimize our cost and operating structure in
light of developments in our business strategy and long-term operating plans. For example, we initiated a corporate restructuring in May 2017 and in July 2018,
each of which resulted in a reduction in our workforce. Any restructuring activities that we may undertake in the future may result in write-offs or other
restructuring charges. There can be no assurance that any restructuring activities that we undertake in the future will achieve the cost savings, operating
efficiencies or other benefits that we may initially expect. Restructuring activities may also result in a loss of continuity, accumulated knowledge and
inefficiency during transitional periods and thereafter. In addition, internal restructurings can require a significant amount of time and focus from management
and other employees, which may divert attention from commercial operations. If any internal restructuring activities we undertake in the future fail to achieve
some or all of the expected benefits therefrom, our business, results of operations and financial condition could be materially and adversely affected.

Certain current and future relationships with customers and third party payors as well as certain of our business operations may be subject, directly
or indirectly, to federal and state healthcare fraud and abuse laws, false claims laws, health information privacy and information security laws and
other privacy and information security laws. If we are unable to comply, or have not fully complied or are perceived to have not fully complied, with
such laws, we could face significant penalties, including criminal sanctions, civil penalties, contractual damages, reputational harm and diminished
profits and future earnings.

Our operations may be directly, or indirectly through our relationships with customers, third party payors, healthcare providers, and others subject to

various federal and state fraud and abuse laws, including, without limitation, the federal Anti-Kickback Statute and the federal False Claims Act. These laws
may impact, among other things, our proposed sales, marketing and education programs. The laws and regulations that may affect our ability to operate include,
but may not be limited to:

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the federal Anti-Kickback Statute, which prohibits, among other things, persons and entities from knowingly and willfully soliciting, receiving,
offering or paying remuneration, directly or indirectly, to induce, or in return for, either the referral of an individual, or the purchase or
recommendation of an item or service for which payment may be made under a federal healthcare program, such as the Medicare and Medicaid
programs;

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federal civil and criminal false claims laws, including the civil False Claims Act, and civil monetary penalty laws, which prohibit, among other
things, individuals or entities from knowingly presenting, or causing to be presented, claims for payment to the federal government, including
Medicare or Medicaid, that are false or fraudulent;

the federal Health Insurance Portability and Accountability Act of 1996 ("HIPAA"), which created additional federal criminal statutes that
prohibit, among other things, executing a scheme to defraud any healthcare benefit program and making false statements relating to healthcare
matters;

• HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act ("HITECH") and its implementing regulations,

which also imposes certain obligations, including mandatory contractual terms, with respect to safeguarding the privacy and security of individually
identifiable health information of covered entities subject to the rule, such as health plans, healthcare clearinghouses and certain healthcare providers,
as well as their business associates, independent contractors of a covered entity that perform certain services involving the use or disclosure of
individually identifiable health information on their behalf and their subcontractors that use, disclose, access, or otherwise process individually
identifiable health information;

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the federal Physician Payments Sunshine Act, which requires certain manufacturers of drugs, devices, biologics and medical supplies for which
payment is available under Medicare, Medicaid or the Children’s Health Insurance Program, with specific exceptions, to report annually to the
Centers for Medicare & Medicaid Services ("CMS") information related to payments or other transfers of value made to physicians (defined to
include doctors, dentists, optometrists, podiatrists and chiropractors), other healthcare professionals (such as physician assistants and nurse
practitioners), and teaching hospitals, and further requires applicable manufacturers and applicable group purchasing organizations to report annually
to CMS ownership and investment interests held by physicians and their immediate family members; and

state and foreign law equivalents of each of the above federal laws, such as: anti-kickback and false claims laws which may apply to items or
services reimbursed by any third party payor, including commercial insurers; state laws that require pharmaceutical companies to comply with the
pharmaceutical industry’s voluntary compliance guidelines and the relevant compliance guidance promulgated by the federal government; state
laws that require drug manufacturers to report information related to payments and other transfers of value to physicians and other healthcare
providers or marketing expenditures; state laws that require the reporting of information related to drug pricing; and state and local laws that
require the registration of pharmaceutical sales representatives, many of which differ from each other in significant ways and may not have the
same effect, thus complicating compliance efforts.

If our operations are found to be in violation (or perceived to be in violation) of any of the laws described above or any other governmental regulations

that apply to us, we may be subject to penalties, including, without limitation, litigation, significant civil, criminal and administrative penalties, damages, fines,
possible exclusion from Medicare, Medicaid and other government healthcare programs, disgorgement, imprisonment, additional reporting requirements and/or
oversight if we become subject to a corporate integrity agreement or similar agreement to resolve allegations of non-compliance with these laws, contractual
damages, reputational harm, diminished profits and future earnings, and curtailment or restructuring of our operations, any of which could adversely affect our
ability to operate our business, including interrupting or stopping clinical trials, and our results of operations.

Recent and future healthcare legislation may further impact our business operations.

The United States and some foreign jurisdictions are considering or have enacted a number of legislative and regulatory proposals to change the healthcare
system  in  ways  that  could  affect  our  ability  to  sell  our  products  profitably.  Among  policy  makers  and  payors  in  the  United  States  and  elsewhere,  there  is
significant interest in promoting changes in healthcare systems with the stated goals of containing healthcare costs, improving quality or expanding access. In
the United States, the pharmaceutical industry has been a particular focus of these efforts and has been significantly affected by major legislative initiatives.

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For example, in March 2010, the Patient Protection and Affordable Care Act of 2010, as amended by the Health Care and Education Reconciliation Act of

2010 (collectively, the "ACA"), was passed and includes measures to significantly change the way healthcare is financed by both governmental and private
insurers. There have been executive, judicial and Congressional challenges to certain aspects of the ACA. While Congress has not passed comprehensive repeal
legislation, bills affecting the implementation of certain taxes under the ACA have been signed into law. The Tax Act, includes a provision which repealed,
effective January 1, 2019, the tax-based shared responsibility payment imposed by the ACA on certain individuals who fail to maintain qualifying health
coverage for all or part of a year that is commonly referred to as the “individual mandate”. In addition, the 2020 federal spending package permanently
eliminated, effective January 1, 2020, the ACA-mandated “Cadillac” tax on high-cost employer-sponsored health coverage and medical device tax and,
effective January 1, 2021, also eliminated the health insurer tax. On June 17, 2021, the U.S. Supreme Court dismissed a challenge on procedural grounds that
argued the ACA is unconstitutional in its entirety because the “individual mandate” was repealed by Congress. Further, on August 16, 2022, President Biden
signed the Inflation Reduction Act of 2022 ("IRA") into law, which among other things, extends enhanced subsidies for individuals purchasing health insurance
coverage in ACA marketplaces through plan year 2025. The IRA also eliminates the “donut hole” under the Medicare Part D program beginning in 2025 by
significantly lowering the beneficiary maximum out-of-pocket cost and through a newly established manufacturer discount program. It is possible that the ACA
will be subject to judicial or Congressional challenges in the future. It is unclear how any such challenges and the healthcare reform measures of the Biden
administration will impact the ACA and our business.

Other legislative changes have been proposed and adopted since the ACA was enacted. These changes include aggregate reductions to Medicare payments

to providers of 2% per fiscal year pursuant to the Budget Control Act of 2011, which began in 2013 and, due to subsequent legislative amendments to the
statute, including the Infrastructure Investment and Jobs Act and the Consolidated Appropriations Act of 2023, will remain in effect until 2032, unless
additional Congressional action is taken. The American Taxpayer Relief Act of 2012, among other things, further reduced Medicare payments to several
providers, including hospitals and cancer treatment centers and increased the statute of limitations period for the government to recover overpayments to
providers from three to five years.

Further, there has been heightened governmental scrutiny in the United States of pharmaceutical pricing practices in light of the rising cost of prescription

drugs and biologics. Such scrutiny has resulted in several recent Congressional inquiries and federal and state legislative activity designed to, among other
things, bring more transparency to product pricing, review the relationship between pricing and manufacturer patient programs, and reform government
program reimbursement methodologies for products. For example, in July 2021, the Biden administration released an executive order, “Promoting Competition
in the American Economy,” with multiple provisions aimed at prescription drugs. In response to Biden’s executive order, on September 9, 2021, the U.S.
Department of Health and Human Services ("HHS") released a Comprehensive Plan for Addressing High Drug Prices that outlines principles for drug pricing
reform and sets out a variety of potential legislative policies that Congress could pursue as well as potential administrative actions HHS can take to advance
these principles. In addition, the IRA, among other things, (1) directs HHS to negotiate the price of certain single-source drugs and biologics covered under
Medicare and (2) imposes rebates under Medicare Part B and Medicare Part D to penalize price increases that outpace inflation. The IRA permits HHS to
implement many of these provisions through guidance, as opposed to regulation, for the initial years. HHS has and will continue to issue and update guidance as
these programs are implemented. These provisions take effect progressively starting in fiscal year 2023. On August 29, 2023, HHS announced the list of the
first ten drugs that will be subject to price negotiations, although the Medicare drug price negotiation program is currently subject to legal challenges. It is
currently unclear how the IRA will be implemented but is likely to have a significant impact on the pharmaceutical industry. In response to the Biden
administration’s October 2022 executive order, on February 14, 2023, HHS released a report outlining three new models for testing by the CMS Innovation
Center which will be evaluated on their ability to lower the cost of drugs, promote accessibility, and improve quality of care. It is unclear whether the models
will be utilized in any health reform measures in the future. Further, on December 7, 2023, the Biden administration announced an initiative to control the price
of prescription drugs through the use of march-in rights under the Bayh-Dole Act. On December 8, 2023, the National Institute of Standards and Technology
published for comment a Draft Interagency Guidance Framework for Considering the Exercise of March-In Rights which for the first time includes the price of
a product as one factor an agency can use when deciding to exercise march-in rights. While march-in rights have not previously been exercised, it is uncertain if
that will continue under the new framework. At the state level, legislatures have increasingly passed legislation and implemented regulations designed to control
pharmaceutical and biological product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain product access and
marketing cost disclosure and transparency measures, and, in some cases, to encourage importation from other countries and bulk purchasing. For example, on
January 5, 2024, the FDA approved Florida’s Section 804 Importation Program (SIP) proposal to import certain drugs from Canada for specific state healthcare
programs. It is unclear how this program will be implemented, including which drugs will be chosen, and whether it will be subject to legal challenges in the
United States or Canada. Other states have also submitted SIP proposals that are pending review by the FDA. Any such approved importation plans, when
implemented, may result in lower drug prices for products covered by those programs.

We expect that healthcare reform measures that may be adopted in the future may result in more rigorous coverage criteria and lower reimbursement, and

in additional downward pressure on the price that we receive for any approved product. Any

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reduction in reimbursement from Medicare or other government-funded programs may result in a similar reduction in payments from private payors.

We cannot predict what healthcare reform initiatives may be adopted in the future. Further federal, state and foreign legislative and regulatory
developments are likely, and we expect ongoing initiatives to increase pressure on drug pricing. Such reforms could have an adverse effect on anticipated
revenues from product candidates that we may successfully develop and for which we may obtain regulatory approval and may affect our overall financial
condition and ability to develop product candidates.

We face potential product liability, and, if successful claims are brought against us, we may incur substantial liability and costs.

The use of our product candidates in clinical trials and the sale of any products for which we obtain marketing approval exposes us to the risk of product

liability claims. Product liability claims might be brought against us by consumers, healthcare providers, pharmaceutical companies or others selling or
otherwise coming into contact with our products. Certain oligonucleotide therapeutics have shown injection site reactions and pro-inflammatory effects and may
also lead to impairment of kidney or liver function. There is a risk that our current and future product candidates may induce similar AEs. If we cannot
successfully defend against product liability claims, we could incur substantial liability and costs. In addition, regardless of merit or eventual outcome, product
liability claims may result in:

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impairment of our business reputation;

• withdrawal of clinical trial participants;

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costs due to related litigation;

distraction of management’s attention from our primary business;

substantial monetary awards to patients or other claimants;

the inability to commercialize our product candidates; and

decreased demand for our product candidates, if approved for commercial sale.

We maintain product liability insurance relating to the use of our therapeutics in clinical trials. However, such insurance coverage may not be sufficient to
reimburse us for any expenses or losses we may suffer. Moreover, insurance coverage is becoming increasingly expensive and in the future we may not be able
to maintain insurance coverage at a reasonable cost or in sufficient amounts to protect us against losses due to liability. If and when we obtain marketing
approval for product candidates, we intend to expand our insurance coverage to include the sale of commercial products; however, we may be unable to obtain
product liability insurance on commercially reasonable terms or in adequate amounts. On occasion, large judgments have been awarded in class action lawsuits
based on drugs that had unanticipated adverse effects. A successful product liability claim or series of claims brought against us could cause our stock price to
decline and, if judgments exceed our insurance coverage, could adversely affect our results of operations and business.

We are subject to stringent and evolving U.S. and foreign laws, regulations, rules, contractual obligations, policies and other obligations related to data
privacy  and  security.  Our  actual  or  perceived  failure  to  comply  with  such  obligations  could  lead  to  regulatory  investigations  or  actions,  litigation
(including class actions), fines and penalties, a disruption of our business operations; reputational harm, loss of revenue or profits, and other adverse
business consequences.

In the ordinary course of business we collect, receive, store, process, generate, use, transfer, disclose, make accessible, protect, secure, dispose of, transmit,

and share (collectively, processing) personal data and other sensitive and confidential information, including proprietary and confidential business data, trade
secrets, intellectual property, data we may collect about trial participants in connection with clinical trials, sensitive third-party data, and employee data
(collectively, sensitive data). Our data processing activities may subject us to numerous data privacy and security obligations, such as various laws, regulations,
guidance, industry standards, external and internal privacy and security policies, contractual requirements, and other obligations relating to data privacy and
security. Data privacy and security obligations are stringent and changing, with new data privacy and security laws being proposed or enacted. Preparing for and
complying with these obligations requires significant resources and may necessitate changes to our information technologies, systems, and practices and to
those of any third parties that process personal data on our behalf. The laws and regulations that may affect our ability to operate include, but may not be limited
to:

• HIPAA, as amended by HITECH, and their implementing regulations, which imposes certain requirements on certain types of individuals and entities

relating to the privacy, security and transmission of certain individually identifiable

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health information. For more information regarding risks associated with HIPAA, please refer to the section above that discusses risks associated with
federal and state healthcare laws and regulations;

the European Union’s General Data Protection Regulation (“EU GDPR”) and the United Kingdom GDPR ("UK GDPR"), which contain provisions
specifically directed at the processing of health information and, more broadly, imposes significant and complex compliance burdens on processing
personal data. Under the EU and UK GDPR, government regulators may impose temporary or definitive bans on data processing, as well as fines of up
to 20 million Euros (17.5 million British Pounds under the UK GDPR) or 4% of annual global revenue, whichever is greater; or private litigation
related to the processing of personal data brought by classes of data subjects or consumer protection organizations authorized at law to represent their
interests. We anticipate that over time we may expand our business operations to include additional operations in the European Economic Area
("EEA") and the United Kingdom ("UK"), including potentially conducting preclinical and clinical trials and, with such expansion, we would be
subject to increased governmental regulation in the European countries in which we might operate, including but not limited to the EU and UK GDPR;

the California Consumer Privacy Act of 2018 as amended by the California Privacy Rights Act of 2020 (“CPRA”), (collectively, “CCPA”), which
requires covered companies to provide new disclosures to California residents, including consumers, business representatives, and employees, and
requires businesses to provide specific disclosures in privacy notices and honor requests of California residents to exercise certain privacy rights. The
CCPA provides for administrative fines of up to $7,500 per violation and allows private litigants affected by certain data breaches to recover significant
statutory damages. Although there are limited exemptions for clinical trial data under the CCPA, the CCPA and other similar laws may impact
(possibly significantly) our business activities depending on how it is interpreted, should we become subject to the CCPA in the future. In addition, the
CPRA expanded the CCPA’s requirements, including by adding a new right for individuals to correct their personal information and establishing a new
regulatory agency to implement and enforce the law. Other states, such as Virginia and Colorado, have also passed comprehensive privacy laws, and
similar laws are being considered in several other states, as well as at the federal and local levels. While these states, like the CCPA, also exempt some
data processed in the context of clinical trials, these developments further complicate compliance efforts, and increase legal risk and compliance costs
for us and the third parties upon whom we rely;

new laws governing the privacy of consumer health data, including Washington's My Health My Data Act ("MHMD"), broadly define consumer health
data, place restrictions on processing consumer health data (including imposing stringent requirements for consents), provide consumers certain rights
with respect to their health data, and create a private right of action to allow individuals to sue for violations of the law. Other states are considering
and may adopt similar laws; and

data breach notification laws, personal data privacy laws, consumer protection laws (e.g., Section 5 of the Federal Trade Commission Act), and other
similar laws (e.g., wiretapping laws) enacted by federal, state, and local governments in the United States.

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As our company grows, we may transfer personal data from Europe and other jurisdictions to the United States or other countries. Europe and other
jurisdictions have enacted laws requiring data to be localized or limiting the transfer of personal data to other countries. In particular, the EEA and the UK have
significantly restricted the transfer of personal data to the United States and other countries whose privacy laws it believes are inadequate. Other jurisdictions
may adopt similarly stringent interpretations of their data localization and cross-border data transfer laws. Although there are currently various mechanisms that
may be used to transfer personal data from the EEA and UK to the United States in compliance with law, such as the EEA and UK’s standard contractual
clauses, the UK’s International Data Transfer Agreement / Addendum, and the EU-U.S. Data Privacy Framework and the UK extension thereto (which allows
for transfers for relevant U.S.-based organizations who self-certify compliance and participate in the Framework), these mechanisms are subject to legal
challenges, and there is no assurance that we can satisfy or rely on these measures to lawfully transfer personal data to the United States. If there is no lawful
manner for us to transfer personal data from the EEA, the UK, or other jurisdictions to the United States, or if the requirements for a legally-compliant transfer
are too onerous, we could face significant adverse consequences, including increased exposure to regulatory actions, substantial fines, and injunctions against
processing or transferring personal data from Europe or other foreign jurisdictions. The inability to import personal data to the United States could significantly
and negatively impact our business operations, including by limiting our ability to conduct clinical trial activities in Europe and elsewhere; limiting our ability
to collaborate with parties that are subject to such cross-border data transfer or localization laws; or requiring us to increase our personal data processing
capabilities and infrastructure in foreign jurisdictions at significant expense. Additionally, companies that transfer personal data out of the EEA and UK to other
jurisdictions, particularly to the United States, are subject to increased scrutiny from regulators, individual litigants, and activist groups. Some European
regulators have ordered certain companies to suspend or permanently cease certain transfers out of Europe for allegedly violating the EU GDPR’s cross-border
data transfer limitations.

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In addition to data privacy and security laws, we are bound by contractual obligations related to data privacy and security, and our efforts to comply with

such obligations may not be successful. We also publish policies, marketing materials, and other statements regarding data privacy and security and if these
policies, materials or statements are found to be deficient, lacking in transparency, deceptive, unfair, or misrepresentative of our practices, we may be subject to
investigation, enforcement actions by regulators, or other adverse consequences.

Obligations related to data privacy and security (and individuals’ data privacy expectations) are quickly changing, becoming increasingly stringent, and
creating uncertainty. Additionally, these obligations may be subject to differing applications and interpretations, which may be inconsistent or conflict among
jurisdictions. Preparing for and complying with these obligations requires us to devote significant resources, which may necessitate changes to our services,
information technologies, systems, and practices and to those of any third parties that process personal data on our behalf. In addition, these obligations may
require us to change our business model.

We may at times fail (or be perceived to have failed) in our efforts to comply with our data privacy and security obligations. Moreover, despite our efforts,

our personnel or third parties upon whom we rely may fail to comply with such obligations, which could negatively impact our business operations and
compliance posture. For example, any failure by a third-party processor to comply with applicable law, regulations, or contractual obligations could result in
adverse effects, including inability to or interruption in our ability to operate our business and proceedings against us by governmental entities or others. If we
or the third parties upon which we rely fail, or are perceived to have failed, to address or comply with applicable data privacy and security obligations, we could
face significant consequences, including but not limited to: government enforcement actions (e.g., investigations, fines, penalties, audits, inspections, and
similar); litigation (including class-action claims); additional reporting requirements and/or oversight; bans on processing personal data (including clinical trial
data); orders to destroy or not use personal data; and imprisonment of company officials.

Any of these events could have a material adverse effect on our reputation, business, or financial condition, including but not limited to: loss of customers;

interruptions or stoppages in our business operations (including, as relevant, clinical trials); inability to process personal data or to operate in certain
jurisdictions; limited ability to develop or commercialize our products; expenditure of time and resources to defend any claim or inquiry; adverse publicity; or
revision or restructuring of our operations.

Cybersecurity risks and the failure to maintain the security, confidentiality, integrity, and availability of our information technology systems or data,
and those maintained on our behalf, could result in material adverse impact to our business, including without limitation regulatory investigations or
actions, a material interruption to our operations, including clinical trials, damage to our reputation and/or subject us to costs, fines and penalties or
lawsuits.

In the ordinary course of business, we and the third parties upon which we rely process sensitive data, and, as a result, we and the third parties upon which

we rely face a variety of evolving threats, including but not limited to ransomware attacks, which could cause security incidents. Cyberattacks, malicious
internet-based activity, online and offline fraud, and other similar activities threaten the confidentiality, integrity, and availability of our sensitive data and
information technology systems, and those of the third parties upon which we rely. Such threats are prevalent and continue to rise, are increasingly difficult to
detect, and come from a variety of sources, including traditional computer “hackers,” threat actors, “hacktivists,” organized criminal threat actors, personnel
(such as through theft or misuse), sophisticated nation-state and nation-state supported actors now engage in attacks (including advanced persistent threat
intrusions) for geopolitical reasons and in conjunction with military conflicts and defense activities. During times of war and other major conflicts, we and the
third parties upon which we rely may be vulnerable to a heightened risk of these attacks, including retaliatory cyber-attacks, that could materially disrupt our
systems and operations, supply chain, and ability to produce, sell and distribute our services.

We and third parties we rely on may also be the subject of a variety of evolving threats, including but not limited to social-engineering attacks (including
through deep fakes, which may be increasingly more difficult to identify as fake, and phishing attacks), malicious code (such as viruses and worms), malware
(including as a result of advanced persistent threat intrusions), denial-of-service attacks, credential stuffing, credential harvesting, personnel misconduct or error,
ransomware attacks, supply-chain attacks, software bugs, server malfunctions, software or hardware failures, loss of data or other information technology assets,
adware, telecommunications failures, earthquakes, fires, floods, attacks enhanced or facilitated by AI, and other similar threats. Threat actors may continue to
develop and use more sophisticated tools and techniques (including AI) that are specifically designed to circumvent security controls, evade detection, and
obfuscate forensic evidence, making it more difficult for us to identify, investigate and recover from incidents. In particular, severe ransomware attacks are
becoming increasingly prevalent and can lead to significant interruptions, delays, or outages in our operations, disruption of clinical trials, loss of data
(including data related to clinical trials), loss of income, significant extra expenses to restore data or systems, reputational loss and the diversion of funds.
Extortion payments may alleviate the negative impact of a ransomware

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attack, but we may be unwilling or unable to make such payments (including, for example, if applicable laws or regulations prohibit such payments).

We rely on a global enterprise software system to operate and manage our business, and our business therefore depends on the continuous, effective,
reliable, and secure operation of our computer hardware, software, services, networks, communications, Internet servers and related infrastructure. We rely upon
third-party service providers and technologies to operate critical business systems and process sensitive data in a variety of contexts, including, without
limitation, third-party providers of cloud-based infrastructure, encryption and authentication technology, employee email, content delivery to customers, and
other functions. Our ability to monitor these third parties’ information security practices is limited, and these third parties may not have adequate information
security measures in place. If our third-party service providers experience a security incident or other interruption, we could experience adverse consequences.
While we may be entitled to damages if our third-party service providers fail to satisfy their privacy or security-related obligations to us, any award may be
insufficient to cover our damages, or we may be unable to recover such award. Similarly, supply chain attacks have increased in frequency and we cannot
guarantee that third parties and infrastructure in our supply chain or our third-party partners’ supply chains have not been compromised or that they do not
contain exploitable defects or bugs that could result in a breach of or disruption to our information technology systems or the third-party information technology
systems that support us and our services. Despite security controls we have in place, such attacks are difficult to avoid. Our remote workforce poses increased
risks to our information technology systems and data, as employees utilize network connections, computers, and devices outside our premises. Additionally,
future or past business transactions (such as acquisitions or integrations) could expose us to additional cybersecurity risks and vulnerabilities, as our systems
could be negatively affected by vulnerabilities present in acquired or integrated entities’ systems and technologies. Furthermore, we may discover security
issues that were not found during due diligence of such acquired or integrated entities, and it may be difficult to integrate companies into our information
technology environment and security program.

Any of the aforementioned threats could cause a security incident, which, in turn, could result in unauthorized access to, damage to, disablement or

encryption of, use or misuse of, disclosure of, modification of, destruction of, or loss of our data or our customers’ data, or disrupt our ability to provide our
services or our service providers’ ability to support our services. As a result, our business could suffer. The integrity and protection of our sensitive data,
including employee and personal health information, is critical to our business, and employees and others have a high expectation that we will adequately
protect their personal information.

We may expend significant resources, fundamentally change our business activities and practices, or modify our operations, including our clinical trial
activities, or information technology in an effort to protect against security incidents. We take steps to detect and remediate vulnerabilities, but we may not be
able to detect and remediate all vulnerabilities because the threats and techniques used to exploit the vulnerability change frequently and are often sophisticated
in nature. Therefore, such vulnerabilities could be exploited but may not be detected until after a security incident has occurred. These vulnerabilities pose
material risks to our business. Applicable data protection laws, privacy policies or other obligations related to data privacy (e.g. contractual obligations,
obligations related to membership in industry organizations) may require us to implement specific security measures or use industry-standard or reasonable
measures to protect against security measures. The regulatory environment governing information, security and privacy is increasingly demanding and
continues to evolve. Maintaining compliance with applicable information security and privacy obligations may increase our operating costs.

While we have implemented security measures designed to protect against a security incident, there can be no assurance that our security measures or
those of our partners will be effective in protecting against a security incident. We take steps to detect and remediate vulnerabilities, but we may be unable in the
future to detect, anticipate, measure or prevent threats or techniques used to detect or exploit vulnerabilities in our (or our partners’) information technology,
services, communications or software because such threats and techniques change frequently, are often sophisticated in nature, and may not be detected until
after an incident has occurred. Unremediated high risk or critical vulnerabilities pose material risks to our business. Further, we may experience delays in
deploying remedial measures designed to address any such identified vulnerabilities.

If we, or a third party upon whom we rely, experience a security incident, or are perceived to have experienced a security incident, we may experience

adverse consequences, such as: government enforcement actions that could include investigations, fines, penalties, audits and inspections; additional reporting
requirements and/or oversight; restrictions on processing of sensitive data (which could impact our clinical trials or training of our algorithm); litigation
(including class claims); indemnification obligations; negative publicity; reputational harm; monetary fund diversions; interruptions in our operations (including
availability of data); financial loss; and other similar harms. Security incidents and attendant consequences may cause customers to stop using our services,
deter new customers from using our services, and negatively impact our ability to grow and operate our business.

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Furthermore, our contracts may not contain limitations of liability, and even where they do, there can be no assurance that the limitations of liability in our
contracts would be enforceable or adequate or otherwise protect us from liabilities or damages if we fail to comply with applicable data protection laws, privacy
policies or data protection obligations related to information security or security incident. Additionally, we cannot be sure that our insurance coverage will be
adequate or sufficient to protect us from or adequately mitigate liabilities or damages with respect to claims, costs, expenses, litigation, fines, penalties, business
loss, data loss, regulatory actions or material adverse impacts arising out of our privacy and security practices, processing or security incidents we may
experience, or that such coverage will continue to be available on commercially reasonable terms or at all.

In addition to experiencing a security incident, third parties may gather, collect, or infer sensitive information about us from public sources, data brokers,
or other means that reveals competitively sensitive details about our organization and could be used to undermine our competitive advantage or market position.

Changes in funding for the FDA, the SEC and other government agencies could hinder their ability to hire and retain key leadership and other
personnel, prevent new products and services from being developed or commercialized in a timely manner or otherwise prevent those agencies from
performing normal functions on which the operation of our business may rely, which could negatively impact our business.

The ability of the FDA to review and approve new products can be affected by a variety of factors, including government budget and funding levels,
ability to hire and retain key personnel and accept payment of user fees, and statutory, regulatory, and policy changes. Average review times at the agency have
fluctuated in recent years as a result. In addition, government funding of the SEC and other government agencies on which our operations may rely, including
those that fund research and development activities is subject to the political process, which is inherently fluid and unpredictable.

Disruptions at the FDA and other agencies may also slow the time necessary for new drugs to be reviewed and/or approved by necessary government
agencies, which would adversely affect our business. For example, over the last several years, the U.S. government has shut down several times and certain
regulatory agencies, such as the FDA and the SEC, have had to furlough critical FDA, SEC and other government employees and stop critical activities. If a
prolonged government shutdown occurs, it could significantly impact the ability of the FDA to timely review and process our regulatory submissions, which
could have a material adverse effect on our business. Further, future government shutdowns could impact our ability to access the public markets and obtain
necessary capital in order to properly capitalize and continue our operations.

Our business and operations might be disrupted or adversely affected by catastrophic events.

Our headquarters are located in San Diego County. We are vulnerable to natural disasters such as earthquakes and wild fires, as well as other events that

could disrupt our operations. We do not carry insurance for earthquakes or other natural disasters and we may not carry sufficient business interruption
insurance to compensate us for losses that may occur. Any losses or damages we incur could have a material adverse effect on our business operations. In
addition, natural disasters or other catastrophic events in various parts of the world, including interruptions in the supply of natural resources, political and
governmental changes, disruption in transportation networks or delivery services, severe weather conditions, wildfires and other fires, explosions, actions of
animal rights activists, terrorist attacks, earthquakes, wars and other geopolitical events (such as the war between Russia and Ukrain, the state of war between
Israel and Hamas and the risk of a larger conflict arising from either war), and public health issues could disrupt our operations or those of our collaborators,
contractors and vendors or contribute to unfavorable economic or other conditions that could adversely impact us.

Our business could be adversely affected by the effects of health pandemics or epidemics in regions where we or third parties on which we rely have
significant manufacturing facilities, concentrations of clinical trial sites or other business operations, or materially affect our operations globally,
including at our headquarters in San Diego and at our clinical trial sites, as well as the business or operations of our manufacturers, CROs or other
third parties with whom we conduct business.

Our business may be adversely affected by the effects of health pandemics or epidemics. Such a health pandemic or epidemic may pose the risk that we or
our clinical trial subjects, employees, contractors, collaborators and vendors may be prevented from conducting certain clinical trials or other business activities
for an indefinite period of time, including due to travel restrictions, quarantines, “stay-at-home” and "shelter-in-place" orders or shutdowns that have been or
may in the future be requested or mandated by governmental authorities. These and similar disruptions in our operations could negatively impact our business,
operating results and financial condition.

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In addition, our clinical trial may in the future be affected by health pandemics or epidemics. A future pandemic could negatively affect site initiation and

create delays in patient enrollment if a pandemic were to impede patient movement or interrupt healthcare services. Similarly, our ability to recruit and retain
patients and principal investigators and site staff who, as healthcare providers, may have heightened exposure to an infectious disease, could be delayed or
disrupted, which would adversely impact our clinical trial operations.

Our business could be negatively impacted by environmental, social and corporate governance (ESG) matters or our reporting of such matters.

There is an increasing focus from certain investors, employees, partners, and other stakeholders concerning ESG matters. We may be, or be perceived to
be, not acting responsibly in connection with these matters, which could negatively impact us. Moreover, the SEC has recently proposed, and may continue to
propose, certain mandated ESG reporting requirements, such as the SEC’s proposed rules designed to enhance and standardize climate-related disclosures,
which, if approved, would significantly increase our compliance and reporting costs and may also result in disclosures that certain investors or other
stakeholders deem to negatively impact our reputation and/or that harm our stock price. In addition, we currently do not report our environmental emissions
and, absent a legal requirement to do so, we currently do not plan to report our environmental emission. Lack of reporting could result in certain investors
declining to invest in our common stock.

RISKS RELATED TO OUR COMMON STOCK

The market price of our common stock may be highly volatile.

Our stock price has historically been, and is expected to continue to be, highly volatile. Our stock price could be subject to wide fluctuations in response to

a variety of factors, including the following:

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adverse results or delays in preclinical studies or clinical trials;

inability to obtain additional funding;

any delay in filing an IND or NDA for any of our product candidates and any adverse development or perceived adverse development with respect to
the FDA’s review of that IND or NDA;

failure to maintain existing collaborations or enter into new collaborations;

failure of any future collaboration partners to elect to develop and commercialize product candidates under our collaboration agreements or the
termination of any programs under our collaboration agreements;

failure by us or our licensors and any future collaboration partners to prosecute, maintain or enforce our intellectual property rights;

failure to successfully develop and commercialize our product candidates;

changes in laws or regulations applicable to our preclinical and clinical development activities, product candidates or future products;

inability to obtain adequate product supply for our product candidates or the inability to do so at acceptable prices;

adverse regulatory decisions;

changes in the structure of healthcare payment systems;

introduction of new products, services or technologies by our competitors;

failure to meet or exceed financial projections we may provide to the public;

failure to meet or exceed the estimates and projections of the investment community;

the perception of the pharmaceutical industry by the public, legislatures, regulators and the investment community;

disruptions caused by man-made or natural disasters, public health pandemics or epidemics or other business interruptions;

announcements of significant acquisitions, strategic partnerships, joint ventures or capital commitments by us, any future collaboration partners or our
competitors;

disputes or other developments relating to proprietary rights, including patents, litigation matters and our ability to obtain patent protection for our
technologies;

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additions or departures of key scientific or management personnel;

significant lawsuits, including patent or stockholder litigation;

changes in the market valuations of similar companies;

sales of our common stock by us or our stockholders in the future; and

trading volume of our common stock.

In addition, companies trading in the stock market in general, and The Nasdaq Capital Market in particular, have experienced extreme price and volume

fluctuations that have often been unrelated or disproportionate to the operating performance of these companies. Broad market and industry factors may
negatively affect the market price of our common stock, regardless of our actual operating performance.

We may be unable to comply with the applicable continued listing requirements of The Nasdaq Capital Market.

Our common stock is currently listed on The Nasdaq Capital Market. In order to maintain the listing of our common stock on The Nasdaq Capital Market,
we must satisfy minimum financial and other continued listing requirements and standards, including a minimum closing bid price requirement for our common
stock of $1.00 per share and a minimum stockholders’ equity requirement of $2.5 million.

We have failed to comply with Nasdaq’s minimum bid price requirement and minimum stockholders’ equity requirement on multiple occasions during the

last several years. Most recently, on August 9, 2021, we received a letter from The Nasdaq Stock Market advising us that for 30 consecutive trading days
preceding the date of the letter, the bid price of our common stock had closed below the $1.00 per share minimum price required for continued listing on The
Nasdaq Capital Market. Our common stock did not meet the $1.00 minimum bid price for a minimum of 10 consecutive trading days within the 180-day period
following the date of the letter. Therefore, we requested and were granted an additional 180-day period to regain compliance with the minimum closing bid
price requirement. At our 2022 annual meeting of stockholders, our stockholders approved a reverse split of our common stock. In June 2022, we completed a
1-for-10 reverse split of our outstanding common stock and we subsequently regained compliance with the minimum bid price requirement. There can be no
assurance that we will be able to maintain compliance with the $1.00 minimum bid price requirement or maintain compliance with the minimum stockholders’
equity requirement, or continuously satisfy Nasdaq's other continued listing standards in the future. If we are ultimately not able to maintain or timely regain
compliance with Nasdaq’s continued listing requirements, our common stock will be subject to delisting. In the event that our common stock is delisted from
Nasdaq and is not eligible for quotation or listing on another market or exchange, trading of our common stock could be conducted only in the over-the-counter
market or on an electronic bulletin board established for unlisted securities such as the Pink Sheets or the OTC Bulletin Board. In such event, it could become
more difficult to dispose of, or obtain accurate price quotations for our common stock and there would likely also be a reduction in our coverage by securities
analysts and the news media, which could cause the price of our common stock to decline further. In addition, the delisting of our common stock from The
Nasdaq Capital Market would constitute an event of default under our Loan Agreement.

The requirements of being a publicly traded company may strain our resources and divert management’s attention.

As a publicly traded company, we have incurred, and will continue to incur, significant legal, accounting and other expenses. In addition, the Sarbanes-

Oxley Act, as well as rules subsequently implemented by the SEC and The Nasdaq Capital Market have imposed various requirements on public companies. In
July 2010, the Dodd-Frank Wall Street Reform and Consumer Protection Act (the "Dodd-Frank Act") was enacted. Stockholder activism, the current political
environment and the current high level of government intervention and regulatory reform may lead to substantial new regulations and disclosure obligations,
which may lead to additional compliance costs and impact the manner in which we operate our business in ways we cannot currently anticipate. Our
management and other personnel have devoted and will need to continue to devote a substantial amount of time to these compliance initiatives. Moreover, these
rules and regulations will increase our legal and financial compliance costs and will make some activities more time-consuming and costly.

Changes or modifications in financial accounting standards, including those related to revenue recognition, may harm our results of operations.

From time to time, the Financial Accounting Standards Board ("FASB"), either alone or jointly with other organizations, promulgates new accounting

principles that could have an adverse impact on our financial position, results of operations or reported cash flows.

Any difficulties in adopting or implementing any new accounting standard could result in our failure to meet our financial reporting obligations, which

could result in regulatory discipline and harm investors’ confidence in us. Finally, if we

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were to change our critical accounting estimates, including those related to clinical trial and preclinical study accruals, our operating results could be
significantly affected.

Sales of a substantial number of shares of our common stock in the public market by our existing stockholders could cause our stock price to fall.

Substantially all of our outstanding shares of common stock are available for public sale, subject in some cases to volume and other limitations. If our
existing stockholders sell substantial amounts of our common stock in the public market, or the market perceives that such sales may occur, the trading price of
our common stock could decline. In addition, shares of common stock that are either subject to outstanding options or reserved for future issuance under our
employee benefit plans are or may become eligible for sale in the public market to the extent permitted by the provisions of various vesting schedules and Rule
144 under the Securities Act. If these additional shares of common stock are sold, or if it is perceived that they will be sold, in the public market, the trading
price of our common stock could decline.

Future sales and issuances of our common stock or rights to purchase common stock, including pursuant to our equity incentive plans, could result in
additional dilution of the percentage ownership of our stockholders and could cause our stock price to fall.

We expect that significant additional capital will be needed in the future to continue our planned operations. To the extent we raise additional capital by

issuing equity securities, our stockholders may experience substantial dilution. We may sell common stock, preferred stock, convertible securities or other
equity securities in one or more transactions at prices and in a manner we determine from time to time, any of which may result in material dilution to investors
and/or our existing stockholders. New investors could also be issued securities with rights superior to those of our existing stockholders. As of December 31,
2023, warrants to exercise an aggregate of 6.2 million shares of our common stock were outstanding at a weighted-average exercise price per share of $7.76. In
addition, as of December 31, 2023, an aggregate of 19.7 million shares were issuable upon conversion of shares of our Class A-1, Class A-2, Class A-3, Class
A-4 and Class A-5 preferred stock at the option of the holder, subject to beneficial ownership limitations.

Pursuant to our 2019 Equity Incentive Plan (the "2019 Plan"), our management is authorized to grant stock options and other equity-based awards to our
employees, directors and consultants. In addition, the number of shares available for future grant under the 2019 Plan will automatically increase on January 1st
each year commencing on January 1, 2021 through January 1, 2029, by 5% of all shares of our capital stock outstanding as of December 31st of the preceding
calendar year, subject to the ability of our board of directors to take action to reduce the size of the increase in any given year. Furthermore, pursuant to our
2022 Employee Stock Purchase Plan ("ESPP"), our management is authorized to grant stock options and other equity-based awards to our employees. The
number of shares available for future grant will automatically increase by a number equal to the lesser of 1% of the total number of shares of Common Stock
outstanding on December 31st of the preceding calendar year and 50,000 shares of Common Stock (which number has been adjusted to give effect to the 1-for-
10 reverse stock split of the Common Stock, effected on June 28, 2022), subject to the ability of our board of directors to take action to reduce the size of the
increase in any given year. Currently, we plan to register the increased number of shares available for issuance under the 2019 Plan and the 2022 ESPP each
year.

In addition, we adopted an Inducement Plan in 2021 (the “Inducement Plan”) pursuant to which our management has the ability to grant stock options
exercisable for up to an aggregate of 1,030,000 shares of our common stock to new employees as inducements material to such new employees entering into
employment with us. The number of shares which may be granted under the Inducement Plan may be increased in the future by our board of directors. In the
event we increase the number of shares which may be granted under the Inducement Plan, or adopt another inducement plan for which no stockholder approval
is required under applicable rules and regulations, and grant options pursuant to such plan, our stockholders may experience additional dilution, which could
cause our stock price to fall.

We may be the subject of putative securities class action litigation in the future.

In the past, securities class action litigation has often been brought against a company following a decline in the market price of its securities. This risk is

especially relevant for us because pharmaceutical companies have experienced significant stock price volatility in recent years. For example, certain putative
class action complaints were filed against us and certain of our current and former executive officers in January 2017 alleging that the defendants violated the
federal securities laws by making materially false and misleading statements regarding our business and the prospects for RG-101, thereby artificially inflating
the price of our securities. On December 29, 2020, the court entered a final judgment and dismissed the action with prejudice. It is possible that additional
lawsuits will be filed, or allegations made by stockholders, with respect to these same or other matters and also naming us and/or our officers and directors as
defendants. While we carry liability insurance, there is no

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assurance that any losses we incur in connection with any lawsuits will be covered or that coverage, if any, will be sufficient. In addition, any future litigation
could result in substantial costs and a diversion of management’s attention and resources, which could harm our business.

Changes in tax laws or regulations that are applied adversely to us or our customers may have a material adverse effect on our business, cash flow,
financial condition or results of operations.

New income, sales, use or other tax laws, statutes, rules, regulations or ordinances could be enacted at any time, which could adversely affect our business

operations and financial performance. Further, existing tax laws, statutes, rules, regulations or ordinances could be interpreted, changed, modified or applied
adversely to us. For example, the Tax Act, the Coronavirus Aid, Relief, and Economic Security Act, and the IRA enacted many significant changes to U.S. tax
laws. Future guidance from the Internal Revenue Service and other tax authorities with respect to such legislation may affect us, and certain aspects of such
legislation could be repealed or modified in future legislation. In addition, it is uncertain if and to what extent various states will conform to federal tax
legislation. Future tax reform legislation could have a material impact on the value of our deferred tax assets, could result in significant one-time charges, and
could increase our future U.S. tax expense.

Our ability to use our net operating loss carryforwards and certain other tax attributes may be limited.

As of December 31, 2023, we had net operating loss ("NOL") carryforwards for U.S. federal and California state tax purposes of $389.5 million and
$146.3 million, respectively. A portion of the federal and California state NOL carryforwards will begin to expire, if not utilized, in 2030 and 2033, respectively.
NOLs that expire unused will be unavailable to offset future income tax liabilities. Under current law, federal NOLs incurred in taxable years beginning after
December 31, 2017 of $126.1 million will carry forward indefinitely, but the deductibility of such federal NOLs is limited to 80% of taxable income. It is
uncertain if and to what extent various states will conform to federal tax laws. In addition, under Sections 382 and 383 of the Internal Revenue Code of 1986, as
amended (the "Code"), and corresponding provisions of state law, if a corporation undergoes an “ownership change,” which is generally defined as a greater
than 50% change (by value) in its equity ownership by "5-percent shareholders" over a three-year period, the corporation’s ability to use its pre-change NOL
carryforwards and other pre-change tax attributes (such as research tax credits) to offset its post-change income or taxes may be limited. We have determined
that we triggered an “ownership change” limitation at the completion of our initial public offering in October 2012 and in July 2015. The Company has not
performed a Section 382 ownership-change analysis through December 31, 2023, and it is possible there may have been additional ownership changes. We may
also experience ownership changes in the future as a result of subsequent shifts in our stock ownership, some of which may be outside of our control. As a
result, if we earn net taxable income, our ability to use our pre-ownership change NOL carryforwards to offset U.S. federal taxable income will be subject to
limitations, which could harm our future operating results by effectively increasing our future tax obligations. In addition, at the state level, there may be periods
during which the use of NOLs is suspended or otherwise limited, which could accelerate or permanently increase state taxes owed. As a result, if we earn net
taxable income, we may be unable to use all or a material portion of our NOL carryforwards and other tax attributes, which could potentially result in increased
future tax liability to us and adversely affect our future cash flows.

We do not intend to pay dividends on our common stock so any returns will be limited to the value of our stock.

We have never declared or paid any cash dividends on our common stock. 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. In addition, our ability to pay
cash dividends is currently prohibited by the terms of our secured debt, and any future debt financing arrangement may contain terms prohibiting or limiting the
amount of dividends that may be declared or paid on our common stock. Any return to stockholders will therefore be limited to the appreciation of their stock.

Provisions in our amended and restated certificate of incorporation and bylaws, as well as provisions of Delaware law, could make it more difficult for
a third party to acquire us or increase the cost of acquiring us, even if doing so would benefit our stockholders or remove our current management.

Some provisions of our charter documents and Delaware law may have anti-takeover effects that could discourage an acquisition of us by others, even if

an acquisition would be beneficial to our stockholders and may prevent attempts by our stockholders to replace or remove our current management. These
provisions include:

•

authorizing the issuance of “blank check” preferred stock, the terms of which may be established and shares of which may be issued without
stockholder approval;

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•

•

•

•

prohibiting stockholder action by written consent, thereby requiring all stockholder actions to be taken at a meeting of our stockholders;

eliminating the ability of stockholders to call a special meeting of stockholders;

establishing the state of Delaware as the sole forum for certain legal actions against the Company, its officers and directors; and

establishing advance notice requirements for nominations for election to the board of directors or for proposing matters that can be acted upon at
stockholder meetings.                            

In addition, we are subject to Section 203 of the Delaware General Corporation Law, which generally prohibits a Delaware corporation from engaging in
any of a broad range of business combinations with an interested stockholder for a period of three years following the date on which the stockholder became an
interested stockholder, unless such transactions are approved by our board of directors. This provision could have the effect of delaying or preventing a change
in control, whether or not it is desired by or beneficial to our stockholders. Further, other provisions of Delaware law may also discourage, delay or prevent
someone from acquiring us or merging with us.

GENERAL RISK FACTORS

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

The global credit and financial markets in the past have experienced, and may in the future experience, extreme volatility and disruptions. These

disruptions can result in severely diminished liquidity and credit availability, increases in inflation, declines in consumer confidence, declines in economic
growth, increases in unemployment rates and uncertainty about economic stability. There can be no assurance that deterioration in credit and financial markets
and confidence in economic conditions will not occur. Our general business strategy may be adversely affected by any such economic downturn, volatile
business environment, high inflation, high interest rates, bank failures, or continued unpredictable and unstable market conditions. If the current equity and
credit markets deteriorate, it may make any necessary debt or equity financing more difficult, more costly and more dilutive. Failure to secure any necessary
financing in a timely manner and on favorable terms could have a material adverse effect on our operations, growth strategy, financial performance and stock
price and could require us to delay or abandon clinical development plans. In addition, there is a risk that one or more of our current service providers,
manufacturers and other partners may not survive an economic downturn, exposure to a bank failure, or rising inflation, which could directly affect our ability
to attain our operating goals on schedule and on budget.

Other international and geo-political events could also have a serious adverse impact on our business. For instance, in February 2022, Russia initiated
military action against Ukraine and the two countries are now at war. In response, the United States and certain other countries imposed significant sanctions
and trade actions against Russia and could impose further sanctions, trade restrictions, and other retaliatory actions. Additionally, in October 2023, Hamas
initiated an attack against Israel, provoking a state of war and the risk of a larger conflict. While we cannot predict the broader consequences, these conflicts and
retaliatory and counter-retaliatory actions could materially adversely affect global trade, currency exchange rates, inflation, regional economies, and the global
economy, which in turn may increase our costs, disrupt our supply chain, impair our ability to raise or access additional capital when needed on acceptable
terms, if at all, or otherwise adversely affect our business, financial condition, and results of operations.

Item 1B.    Unresolved Staff Comments

Not applicable.

Item 1C.    Cybersecurity

Risk management and strategy

We have implemented and maintain various information security processes designed to identify, assess and manage material risks from cybersecurity

threats to our critical computer networks, third party hosted services, communications systems, hardware and software, and our critical data, including
intellectual property, confidential information that is proprietary, strategic or competitive in nature (“Information Systems and Data”).

Our legal department, a management committee (composed of our Senior Vice President and General Counsel, our Chief Financial Officer, and our Vice

President, Finance and Controller) and a third-party service provider (collectively, the “Cybersecurity Risk Management Team”) help identify, assess and
manage the Company’s cybersecurity threats and risks. Our

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Cybersecurity Risk Management Team identify and assess risks from cybersecurity threats by monitoring and evaluating our threat environment using various
methods including, for example, manual tools, automated tools, conducting scans of the threat environment, evaluating our and our industry’s risk profile,
evaluating threats reported to us, conducting internal audits, conducting third party threat assessments, and conducting vulnerability assessments to identify
vulnerabilities.

Depending on the environment, we implement and maintain various technical, physical, and organizational measures, processes, standards and policies

designed to manage and mitigate material risks from cybersecurity threats to our Information Systems and Data, including, for example, a cybersecurity incident
response plan, incident detection and response, a disaster recovery and business continuity plan, risk assessments, implementation of security standards,
encryption of data, network security controls, data segregation, access controls, physical security, asset management, tracking and disposal, systems monitoring,
employee training, penetration testing, cybersecurity insurance, and systems monitoring.

Our assessment and management of material risks from cybersecurity threats are integrated into the Company’s overall risk management processes. For

example, (1) cybersecurity risk is addressed as a component of the Company’s enterprise risk management program; (2) the Cybersecurity Risk Management
Team works with management to prioritize our risk management processes and mitigate cybersecurity threats that are more likely to lead to a material impact to
our business; (3) our Senior Vice President and General Counsel, our Chief Financial Officer and our Vice President, Finance and Controller evaluate material
risks from cybersecurity threats against our overall business objectives and reports to the audit committee of the board of directors, which evaluates our overall
enterprise risk.

We use third-party service providers to assist us from time to time to identify, assess, and manage material risks from cybersecurity threats, including for

example professional services firms, including legal counsel and cybersecurity consultants.

We use third-party service providers to perform a variety of functions throughout our business, such as hosting companies, contract research
organizations, contract manufacturing organizations and supply chain resources. We have a vendor management program to manage cybersecurity risks
associated with our use of these providers. The program includes risk assessment for each vendor, system and organization controls reporting, and audits.
Depending on the nature of the services provided, the sensitivity of the Information Systems and Data at issue, and the identity of the provider, our vendor
management process may involve different levels of assessment designed to help identify cybersecurity risks associated with a provider, as well as contractual
obligations related to cybersecurity on the provider.

For a description of the risks from cybersecurity threats that may materially affect the Company and how they may do so, see our risk factors under Part
1. Item 1A. Risk Factors in this Annual Report on Form 10-K, including ”Cybersecurity risks and the failure to maintain the security, confidentiality, integrity,
and availability of our information technology systems or data, and those maintained on our behalf, could result in material adverse impact to our business,
including without limitation regulatory investigations or actions, a material interruption to our operations, including clinical trials, damage to our reputation
and/or subject us to costs, fines and penalties or lawsuits.”

Governance

Our board of directors addresses the Company’s cybersecurity risk management as part of its general oversight function. The board of directors’ audit
committee is responsible for overseeing Company’s cybersecurity risk management processes, including oversight and mitigation of risks from cybersecurity
threats.

Our cybersecurity risk assessment and management processes are implemented and maintained by certain Company management, including our Senior

Vice President and General Counsel, Chief Financial Officer, Vice President, Finance and Controller. Our Senior Vice President and General Counsel has
expertise as a Life Sciences executive, has had a key role in information technology and cybersecurity oversight for several years and has completed several
cybersecurity trainings. Our Chief Financial Officer has several years of expertise performing audits as a public accountant, including audits over information
technology controls, and has also completed several cybersecurity trainings. Our Vice President, Finance and Controller has expertise playing a key role with
information technology general controls and control testing for the Company for many years, and has several years of expertise leading and performing audits
as a public accountant, including audits over information technology controls. He has also completed several cybersecurity trainings.

These positions are responsible for hiring appropriate personnel, helping to integrate cybersecurity risk considerations into the Company’s overall risk

management strategy, and communicating key priorities to relevant personnel. They are also responsible for preparing and approving budgets, helping prepare
for cybersecurity incidents, approving cybersecurity processes, and reviewing security assessments and other security-related reports.

Our cybersecurity incident response processes are designed to escalate certain cybersecurity incidents to members of management depending on the

circumstances, including the Senior Vice President and General Counsel, Chief Financial Officer and Chief Executive Officer. The Cybersecurity Risk
Management Team and others work with the Company’s incident response team to help the Company mitigate and remediate cybersecurity incidents of which
they are notified. In addition, the

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Company’s incident response processes include reporting to the audit committee of the board of directors for certain cybersecurity incidents.

The audit committee receives periodic reports from the Senior Vice President and General Counsel, Chief Financial Officer, Vice President, Finance and

Controller concerning the Company’s significant cybersecurity threats and risk and the processes the Company has implemented to address them. The audit
committee also receives and has access to various reports, summaries or presentations related to cybersecurity threats, risk and mitigation.

Item 2.        Properties

On February 11, 2021, we entered into a lease agreement (the "Campus Point Lease") with ARE-SD Region No. 58 LLC ("Campus Point Landlord"), for
the lease of approximately 13,438 square feet of rentable area located at 4224 Campus Point Court, Suite 210, San Diego, California 92121 (the "Campus Point
Premises"). The commencement date of the Campus Point Lease was April 15, 2021. We are using the Campus Point Premises as our principal executive offices
and as a laboratory for research and development, manufacturing and other related uses. The term of the Campus Point Lease (“Campus Point Initial Term”) is
60 months, ending April 30, 2026.

We believe that our existing facilities are adequate for our current and future needs.

Item 3.        Legal Proceedings

We currently are not a party to, and none of our property is the subject of, any material legal proceedings within the meaning of Item 103 of Regulation S-

K promulgated under the Securities Act of 1933, as amended.

Item 4. Mine Safety Disclosures

Not applicable.

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

PART II

Market Information

Our common stock is listed on The Nasdaq Capital Market under the symbol "RGLS."

Holders of Record

As of March 15, 2024, there were 36 holders of record of our common stock.

Dividend Policy

We have never declared or paid any cash dividends on our common stock. We currently intend to retain all available funds and any future earnings to

support our operations and finance the growth and development of our business. We do not intend to pay cash dividends on our common stock for the
foreseeable future. Any future determination related to our dividend policy will be made at the discretion of our board of directors and will depend upon, among
other factors, our results of operations, financial condition, capital requirements, contractual restrictions, business prospects and other factors our board of
directors may deem relevant. In addition, our ability to pay cash dividends is currently prohibited by the terms of the Loan Agreement with Oxford.

Item 6. [Reserved]

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

    You should read the following discussion and analysis and our financial statements and related notes included elsewhere in this Annual Report. The following
discussion contains forward-looking statements that involve risks and uncertainties. Our actual results could differ materially from those expressed or implied
in any forward-looking statements as a result of various factors, including those set forth under the caption “Risk Factors,” under Part I, Item 1A of this Annual
Report.

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OVERVIEW

We are a clinical-stage biopharmaceutical company focused on discovering and developing first-in-class drugs targeting microRNAs to treat diseases with

significant unmet medical need. We were formed in 2007 when Alnylam Pharmaceuticals, Inc. ("Alnylam") and Ionis Pharmaceuticals, Inc. ("Ionis")
contributed significant intellectual property, know-how and financial and human capital to pursue the development of drugs targeting microRNAs pursuant to a
license and collaboration agreement. We are currently focused on orphan kidney diseases where microRNA genetic drivers are implicated and there are clear
unmet medical needs. Our product candidate, RGLS8429, an anti-miR next generation oligonucleotide targeting miR-17 for the treatment of autosomal
dominant polycystic kidney disease ("ADPKD"), is in Phase 1b clinical development. In June 2022, the U.S. Food and Drug Administration ("FDA") granted
orphan drug designation to RGLS8429 for the treatment of ADPKD.

In addition to this program, we continue to advance and expand our internal discovery pipeline to identify potential product candidates.

Since our inception through December 31, 2023, we have relied primarily on the sale of our equity to fund company operations. Through December 31,

2023, we have received $436.1 million in net proceeds from the sale of our equity and convertible debt securities, $101.8 million from collaborations,
principally from upfront payments, research funding and preclinical and clinical milestones, and $19.8 million in net proceeds from our Term Loan. As of
December 31, 2023, we had cash and cash equivalents of approximately $23.8 million. In March 2024, we sold and issued approximately $100.0 million of our
common stock and non-voting convertible preferred stock in a private placement financing. After deducting placement agent and financial advisor fees and
other financing expenses, net proceeds to us from the financing were approximately $94.0 million.

FINANCIAL OPERATIONS OVERVIEW

Research and development expenses

Research and development expenses consist of costs associated with our research activities, including our drug discovery efforts and the development of

our therapeutic programs. Our research and development expenses include:

•

•

•

•

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

external research and development expenses incurred under arrangements with third parties, such as contract research organizations, or CROs, contract
manufacturing organizations, or CMOs, other clinical trial related vendors, consultants and our scientific advisors;

license fees; and

facilities, depreciation and other allocated expenses, which include direct and allocated expenses for rent and maintenance of facilities, amortization of
leasehold improvements and equipment, and laboratory and other supplies.

We expense research and development costs as incurred. We account for nonrefundable advance payments for goods and services that will be used in
future research and development activities as expenses when the service has been performed or when the goods have been received. Certain of the raw materials
used in the process of manufacturing drug product are capitalized upon their acquisition and expensed upon usage, as we have determined these materials have
alternative future use.

To date, we have conducted research on many different microRNAs with the goal of understanding how they function and identifying those that might be

targets for therapeutic modulation. At any given time we are working on multiple targets, primarily within our therapeutic areas of focus. Our organization is
structured to allow the rapid deployment and shifting of resources to focus on the most promising targets based on our ongoing research. As a result, in the early
phase of our development programs, our research and development costs are not tied to any specific target. However, we are currently spending the vast
majority of our research and development resources on our ADPKD program.

Since our inception, we have incurred a total of approximately $430.7 million in research and development expenses through December 31, 2023.

The process of conducting clinical trials and preclinical studies necessary to obtain regulatory approval is costly and time consuming. We, or any future

strategic collaboration partners, may never succeed in achieving marketing approval for any of our product candidates. The probability of success for each
product candidate may be affected by numerous factors, including preclinical data, clinical data, regulatory developments, competition, manufacturing
capability and commercial viability.

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Successful development of future product candidates is highly uncertain and may not result in approved products. Completion dates and completion costs

can vary significantly for each future product candidate and are difficult to predict. We anticipate we will make determinations as to which programs to pursue
and how much funding to direct to each program on an ongoing basis in response to our ability to maintain or enter into new collaborations with respect to each
program or potential product candidate, the scientific and clinical success of each future product candidate, as well as ongoing assessments as to each future
product candidate’s commercial potential. We will need to raise additional capital and may seek additional collaborations in the future in order to advance our
various programs.

General and administrative expenses

General and administrative expenses consist primarily of salaries and related benefits, including stock-based compensation, related to our executive,
finance, legal, business development and support functions. Other general and administrative expenses include allocated facility-related costs not otherwise
included in research and development expenses and professional fees for auditing, tax, intellectual property, legal services and director and officer insurance
programs and investor relations costs, some of which are incurred as a result of being a publicly traded company.

Other income (expense), net

Other income (expense) consists primarily of interest income and expense and various income or expense items of a non-recurring nature. We earn
interest income from interest-bearing accounts and money market funds. Interest expense is primarily attributable to interest charges associated with borrowings
under our secured Term Loan.

CRITICAL ACCOUNTING ESTIMATES

The preparation of our financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities,

disclosure of contingent assets and liabilities, and the revenues and expenses incurred during the reported periods. We base our estimates on historical
experience and on various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about
the carrying value of assets and liabilities that are not apparent from other sources. Actual results may differ from these estimates under different assumptions or
conditions.

Clinical Trial and Preclinical Study Accruals

We make estimates of our accrued expenses for clinical trial and preclinical study activities based on the facts and circumstances known to us at the time.
These accruals are based upon estimates of costs incurred and fees that may be associated with services provided by clinical trial investigational sites and CROs
and for other clinical trial-related activities. In accruing for these services, we estimate the time period over which services will be performed and the level of
effort to be expended in each period. If possible, we obtain information regarding unbilled services directly from these service providers. However, we may be
required to estimate these services based on other information available to us by reviewing contracts, vendor agreements and purchase orders, and through
discussions with internal clinical and preclinical personnel and external service providers as to the progress or stage of completion of services and the agreed-
upon fee to be paid for such services. If we underestimate or overestimate the activities or fees associated with a study or service at a given point in time,
adjustments to research and development expenses may be necessary in future periods. Historically, our estimated accrued liabilities have approximated actual
expense incurred. Subsequent changes in estimates may result in a material change in our accruals.

Our significant accounting policies are described within “The Business, Basis of Presentation and Summary of Significant Accounting Policies” of our

financial statements included elsewhere in this Annual Report.

Recent Accounting Pronouncements

For a discussion of recently issued accounting pronouncements, refer to the section titled “Recent Accounting Pronouncements” within “The Business,

Basis of Presentation and Summary of Significant Accounting Policies” of our financial statements included elsewhere in this Annual Report.

RESULTS OF OPERATIONS

Comparison of the years ended December 31, 2023 and 2022

The following table summarizes our results of operations for the years ended December 31, 2023 and 2022 (in thousands):

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Research and development expenses
General and administrative expenses
Interest and other income (expenses), net

Research and development expenses

Years ended
December 31,

2023

2022

21,152 
9,957 
1,073 

18,410 
9,829 
(83)

The following table summarizes the components of our research and development expenses for the periods indicated, together with year-over-year changes
(dollars in thousands):

Research and development
     Personnel and internal expenses
     Third-party and outsourced expenses
Non-cash stock-based compensation
Depreciation

Total research and development expenses

2023

% of total

2022

% of total

Increase (decrease)
%
$

$

$

8,814 
11,164 
1,029 
145 
21,152 

41 % $
53 %
5 %
1 %
100 % $

7,411 
10,309 
594 
96 
18,410 

40 % $
56 %
3 %
1 %
100 % $

1,403 
855 
435 
49 
2,742 

19 %
8 %
73 %
51 %
15 %

Research and development expenses increased by $2.7 million for the year ended December 31, 2023, compared to the year ended December 31, 2022.

The aggregate increase was primarily driven by costs associated with the progression of our clinical trials and preclinical studies, most notably the advancement
of RGLS8429 for the treatment of ADPKD in the Phase 1b study.

General and administrative expenses

General and administrative expenses were $10.0 million for the year ended December 31, 2023, compared to $9.8 million for the year ended

December 31, 2022. These amounts reflect personnel-related and ongoing general business operating costs.

Interest and other (expenses) income, net

Net interest and other income was $1.1 million for the year ended December 31, 2023, compared to net interest and other expense of $0.1 million for the

year ended December 31, 2022. These amounts primarily consisted of interest earned on our cash equivalents and short-term investments, offset by interest
charges associated with our outstanding Term Loan.

LIQUIDITY AND CAPITAL RESOURCES

As of December 31, 2023, we had cash and cash equivalents of approximately $23.8 million. In March 2024, we raised approximately $94.0 million in

net proceeds from the sale of our common stock and non-voting convertible preferred stock in a private placement financing.

If we are unable to maintain sufficient financial resources, our business, financial condition and results of operations will be materially and adversely

affected. To fund our operations in both the short term and long term (beyond 12 months), we may seek to raise additional capital through equity and/or debt
financings. There can be no assurance that we will be able to obtain the needed financing on acceptable terms or at all. Additionally, equity or debt financings
may have a dilutive effect on the holdings of our existing stockholders. We believe our existing resources will fund our planned operations and expenditures for
at least the next 12 months.

Our future capital requirements are difficult to forecast and will depend on many factors, including:

•

•

•

the initiation, progress, timing and completion of preclinical studies and clinical trials for our development programs and product candidates, and
associated costs;

the number and characteristics of product candidates that we pursue;

the terms and timing of any strategic collaboration, licensing and other arrangements that we may establish;

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•

•

•

•

•

•

•
•

the outcome, timing and cost of regulatory approvals;

delays that may be caused by changing regulatory requirements;

the cost and timing of hiring new employees to support our continued growth;

the costs involved in filing and prosecuting patent applications and enforcing and defending patent claims;

the costs and timing of procuring clinical and commercial supplies of our product candidates;

the costs and timing of establishing sales, marketing and distribution capabilities, and the pricing and reimbursement for any products for which we
may receive regulatory approval;

the extent to which we acquire or invest in businesses, products or technologies; and
payments under our Term Loan.

To date, we have funded our operations primarily through the sale of equity, and to a lesser extent, through convertible debt, up-front payments, research

funding and milestone payments under collaborative arrangements. Since inception, we have primarily devoted our resources to funding research and
development, including discovery research, and preclinical and clinical development activities. To fund future operations, we will likely need to raise additional
capital. We anticipate that we will seek to fund our operations through public or private equity or debt financings or other sources, such as potential
collaboration agreements. We cannot make assurances that anticipated additional financing will be available to us on favorable terms, or at all. Although we
have previously been successful in obtaining financing through our equity securities offerings, there can be no assurance that we will be able to do so in the
future. There can be no assurance that deterioration in credit and financial markets and confidence in economic conditions will not occur in the future. If equity
and credit markets deteriorate, it may make any necessary debt or equity financing more difficult to obtain, more costly and/or more dilutive.

The following table shows a summary of our cash flows for the years ended December 31, 2023 and 2022 (in thousands): 

Net cash (used in) provided by:

Operating activities
Investing activities
Financing activities

Total

Operating activities

Years ended
December 31,

2023

2022

$

$

(26,768) $
14,491 
11,816 

(461) $

(25,526)
(15,120)
4,491 
(36,155)

Net cash used in operating activities increased to $26.8 million for the year ended December 31, 2023, compared to $25.5 million for the year ended
December 31, 2022. The increase in net cash used in operating activities was primarily attributable to net losses of $30.0 million and $28.3 million for the years
ended December 31, 2023 and 2022, respectively.

Investing activities

Net cash provided by investing activities was $14.5 million for the year ended December 31, 2023, compared to net cash used in investing activities of

$15.1 million for the year ended December 31, 2022. The net cash provided by investing activities for the year ended December 31, 2023 was primarily
attributable to sales of $20.0 million of short-term investments, partially offset by purchases of $4.9 million of short-term investments. The net cash used in
investing activities for the year ended December 31, 2022 was primarily attributable to purchases of $32.8 million of short-term investments, partially offset by
sales of $18.0 million of short-term investments. The short-term investments purchased and sold in the years ended December 31, 2023 and 2022 were all U.S.
Treasury securities.

Financing activities

Net cash provided by financing activities was $11.8 million for the year ended December 31, 2023, compared to net cash provided by financing activities

of $4.5 million for the year ended December 31, 2022. Net cash provided by financing activities for the year ended December 31, 2023 was primarily
attributable to total net proceeds received from our private placement of common stock and non-voting convertible preferred stock in April 2023 of $14.0
million and net proceeds from shares sold and settled under the ATM Offering of $1.1 million, partially offset by $3.3 million of principal payments made on
our Term Loan. Net cash provided by financing activities for the year ended December 31, 2022 was primarily attributable to

56

 
 
 
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net proceeds from the issuance of our common stock sold in our ATM Offering pursuant to our Common Stock Sales Agreement (the "Stock Sales Agreement")
with H.C. Wainwright & Co., LLC ("HCW") of $4.5 million.

MATERIAL CASH REQUIREMENTS

The following table summarizes our contractual obligations and commitments as of December 31, 2023 that will affect our future liquidity (in thousands):

Facility operating lease obligations
Term Loan obligations

Total

Total

<1 year

Payments due by period
1-3 years

3-5 years

>5 yea

$

$

1,901 
2,713 
4,614 

$

$

800 
2,713 
3,513 

$

$

1,101 
— 
1,101 

$

$

— 
— 
— 

$

$

We enter into contracts in the normal course of business with clinical sites for the conduct of clinical trials, CROs for clinical research studies,

professional consultants for expert advice and other vendors for clinical supply manufacturing or other services. These contracts generally provide for
termination on notice, and therefore are cancellable contracts and not included in the table of contractual obligations and commitments.

In addition to the contractual obligations above, we also expect to have future material cash requirements related to our preclinical and clinical programs

and personnel expenses.

Item 7A.    Quantitative and Qualitative Disclosures About Market Risk

Some of the securities that we invest in have market risk where a change in prevailing interest rates may cause the principal amount of cash equivalents to

fluctuate. Financial instruments that potentially subject us to significant concentrations of credit risk consist primarily of cash and cash equivalents. We invest
our excess cash primarily in money market funds and U.S. Treasury securities. The primary objectives of our investment activities are to ensure liquidity and to
preserve principal while at the same time maximizing the interest income we receive from our investments without significantly increasing risk. We have
established guidelines regarding approved investments and maturities of investments, which are designed to maintain safety and liquidity.

Because of the short-term maturities of our cash equivalents, we do not believe that an increase in market rates would have any significant impact on the

realized value of our cash equivalents. If a 10% change in interest rates were to have occurred on December 31, 2023, this change would not have had a material
effect on the fair value of our cash equivalents as of that date.

We also have interest rate exposure as a result of our outstanding Term Loan. As of December 31, 2023 the outstanding principal amount of the Term

Loan was $1.4 million.

The Term Loan bears interest at a floating per annum rate equal to the greater of (a) 8.95% and (b) the sum of (i) the 1-month CME Term Secured
Overnight Financing Rate (SOFR) reference rate on the last business day of the month that immediately precedes the month in which the interest will accrue,
(ii) 0.10% and (iii) 8.51%.

If a 10% change in interest rates were to have occurred on December 31, 2023, this change would not have had a material effect on our interest expense as

of that date.

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Table of Contents

Item 8. Financial Statements and Supplementary Data

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Stockholders and the Board of Directors of Regulus Therapeutics Inc.

Opinion on the Financial Statements

We have audited the accompanying balance sheets of Regulus Therapeutics Inc. (the Company) as of December 31, 2023 and 2022, the related statements of
operations and comprehensive loss, 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 at 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 U.S. generally accepted accounting principles.

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  audit  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 Matter

The critical audit matter communicated below is a matter arising from the current period audit of the financial statements that was communicated or required to
be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our
especially challenging, subjective or complex judgments. The communication of the critical audit matter 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 a separate opinion on the critical audit matter or on
the accounts or disclosures to which it relates.

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Table of Contents

Description of the
Matter

Accrued research and development expenses

During 2023, the Company incurred $21.2 million for research and development expense and, as of December 31, 2023,
the Company accrued $921 thousand for research and development expenses. As described in Note 1 to the financial
statements, the Company records accruals for estimated costs of clinical trial and preclinical studies that include
services provided by clinical trial investigational sites and contract research organizations and other clinical trial-related
activities. Clinical trial and preclinical study activities performed by third parties are accrued and expensed based upon
estimates of the time period over which these services will be performed and the level of effort to be expended in each
period.

Auditing management’s accounting for clinical trial and preclinical study accruals is especially challenging as
evaluating the progress or stage of completion of the activities under the Company’s research and development
agreements is dependent on information from third-party service providers and internal clinical personnel, which
includes both subjective and qualitative aspects.

How We Addressed the
Matter in Our Audit

To test the Company’s accrued research and development expenses for clinical trial and preclinical study activities,
among other procedures, we obtained supporting evidence of the research and development activities performed for
significant clinical trials and preclinical studies. We inspected summaries of project status meetings with accounting
personnel and clinical and preclinical project managers to corroborate the status of significant research and development
activities. To verify the appropriate measurement of clinical trial and preclinical study accruals, we compared the costs
for a sample of transactions against the related invoices and contracts and confirmed amounts incurred to-date with
third-party service providers. We also examined a sample of subsequent payments to evaluate the completeness of the
clinical trial and preclinical study accruals.

/s/ Ernst & Young LLP

We have served as the Company’s auditor since 2007.

San Diego, California
March 21, 2024

Regulus Therapeutics Inc.
BALANCE SHEETS

59

 
 
 
 
 
 
 
 
 
 
 
Table of Contents

(In thousands, except share and per share data)

December 31,

2023

2022

Assets
Current assets:

Cash and cash equivalents
Short-term investments
Restricted cash
Prepaid materials, net
Prepaid expenses and other current assets

Total current assets
Property and equipment, net
Intangibles, net
Right of use asset
Total assets

Liabilities and stockholders’ equity
Current liabilities:

Accounts payable
Accrued liabilities
Accrued research and development expenses
Accrued compensation
Current portion of term loan, less debt issuance costs
Other current liabilities

Total current liabilities
Operating lease liability, less current portion
Total liabilities
Commitments and Contingencies (Note 8)
Stockholders’ equity (deficit):

Class A-1 convertible preferred stock, $0.001 par value; 256,700 shares authorized, issued and outstanding at
December 31, 2023 and 2022
Class A-2 convertible preferred stock, $0.001 par value; 1,330,832 shares authorized, issued and outstanding at
December 31, 2023 and 2022
Class A-3 convertible preferred stock, $0.001 par value; 258,707 shares authorized, issued and outstanding at
December 31, 2023 and 2022
Class A-4 convertible preferred stock, $0.001 par value; 3,725,720 shares authorized, issued and outstanding at
December 31, 2023 and 2022
Class A-5 convertible preferred stock, $0.001 par value, 140,827 and 0 shares authorized, issued and

outstanding at December 31, 2023 and 2022, respectively

Common stock, $0.001 par value; 300,000,000 shares authorized at December 31, 2023 and 2022; 20,222,672

and 16,840,261 shares issued and outstanding at December 31, 2023 and 2022, respectively

Additional paid-in capital
Accumulated other comprehensive loss
Accumulated deficit
Total stockholders’ equity
Total liabilities and stockholders’ equity

See accompanying notes to these financial statements.

60

$

$

$

$

23,767  $
— 
62 
3,010 
1,340 
28,179 
1,061 
33 
1,477 
30,750  $

204  $
691 
921 
2,979 
1,334 
2,379 
8,508 
1,055 
9,563 

— 

1 

— 

4 

— 

24,228 
14,932 
62 
3,010 
1,847 
44,079 
536 
62 
2,039 
46,716 

175 
961 
1,252 
2,205 
4,511 
2,553 
11,657 
1,768 
13,425 

— 

1 

— 

4 

— 

20 
534,375 
— 
(513,213)
21,187 
30,750  $

17 
516,457 
(12)
(483,176)
33,291 
46,716 

 
 
Table of Contents

Regulus Therapeutics Inc.
STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS
(In thousands, except share and per share data)

Operating expenses:

Research and development
General and administrative

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

Interest and other income
Interest and other expense

Loss before income taxes
Income tax expense
Net loss

Other comprehensive loss:

Unrealized loss on short-term investments, net

Comprehensive loss

Net loss per share, basic and diluted

2023

2022

21,152 
9,957 
31,109 
(31,109)

1,677 
(604)
(30,036)
(1)
(30,037) $

— 
(30,037) $

1.58  $

18,410 
9,829 
28,239 
(28,239)

605 
(688)
(28,322)
(1)
(28,323)

(12)
(28,335)

1.86 

$

$

$

Weighted average shares used to compute basic and diluted net loss per share

18,960,401 

15,259,958 

See accompanying notes to these financial statements.

61

 
 
 
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Balance at December 31, 2021

Issuance of common stock upon vesting of
restricted stock units
Stock-based compensation expense
Issuance of common stock under Employee Stock
Purchase Plan
Issuance of common stock through ATM
Unrealized loss on short-term investments
Net loss
Balance at December 31, 2022

Issuance of common stock and preferred stock
from private placement, net of offering costs
Issuance of common stock under Employee Stock
Purchase Plan
Issuance of common stock through ATM
Gain on short-term investments
Net loss
Balance at December 31, 2023

STATEMENTS OF STOCKHOLDERS’ EQUITY
(In thousands, except share data)

Convertible
Preferred Stock

Shares
5,571,959  $

Amount
5 

Common stock

Shares
14,597,118  $

Amount

Additional
paid-in
capital

Accumulated
other
comprehensive
loss

Accumulated
deficit

Total
stockholders’
equity

15  $

509,791  $

—  $

(454,853) $

54,958 

— 
— 

— 
— 
— 
— 

— 
— 

— 
— 
— 
— 

36,300 
— 

1,743 
2,205,100 
— 
— 

— 
— 

— 
2 
— 
— 

— 
2,177 

3 
4,486 
— 
— 

— 
— 

— 
— 
(12)
— 

— 
— 

— 
— 
— 
(28,323)

5,571,959  $

5 

16,840,261  $

17  $

516,457  $

(12) $

(483,176) $

140,827 

— 

2,615,536 

— 
— 
— 
— 

— 
— 
— 
— 

41,683 
725,192 
— 
— 

— 

2 

— 
1 
— 
— 

2,801 

14,001 

45 
1,071 
— 
— 

— 

— 

— 
— 
12 
— 

— 

— 

— 
— 
— 
(30,037)

5,712,786  $

5 

20,222,672  $

20  $

534,375  $

—  $

(513,213) $

See accompanying notes to these financial statements.

62

— 
2,177 

3 
4,488 
(12)
(28,323)

33,291 

2,801 

14,003 

45 
1,072 
12 
(30,037)

21,187 

Stock-based compensation expense

— 

— 

— 

 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Regulus Therapeutics Inc.
STATEMENTS OF CASH FLOWS
(In thousands)

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

Depreciation and amortization expense
Stock-based compensation
Amortization of premiums and accretion of discounts on investments, net
Other
Change in operating assets and liabilities:
Prepaid expenses and other assets
Accounts payable
Accrued liabilities
Accrued research and development expenses
Accrued compensation
Operating lease right-of-use assets and liabilities, net
Other liabilities

Net cash used in operating activities
Investing activities
Purchases of short-term investments
Sales and maturities of short-term investments
Purchases of property and equipment
Sales of property and equipment
Net cash provided by (used in) investing activities
Financing activities
Proceeds from issuance of securities through private placement, net of issuance costs
Proceeds from issuance of common stock, net
Principal payments on term loan
Net cash provided by financing activities
Net decrease in cash, cash equivalents and restricted cash
Cash, cash equivalents and restricted cash at beginning of period
Cash, cash equivalents and restricted cash at end of period

Reconciliation of cash, cash equivalents and restricted cash
Cash and cash equivalents
Restricted cash
Total cash, cash equivalents and restricted cash

Supplemental disclosure of cash flow information
Interest paid
Income taxes paid

Supplemental disclosure of non-cash investing and financing activities
Purchases of property and equipment included in accrued liabilities

See accompanying notes to these financial statements.

63

Years ended December 31,

2023

2022

$

(30,037) $

(28,323)

227 
2,801 
(157)
141 

507 
29 
(396)
(331)
773 
(87)
(238)
(26,768)

(4,899)
20,000 
(613)
3 
14,491 

14,003 
1,117 
(3,304)
11,816 
(461)
24,290 
23,829  $

23,767  $
62 
23,829  $

(447) $

(1) $

122 
2,177 
(185)
133 

(67)
(110)
140 
442 
189 
(64)
20 
(25,526)

(32,759)
18,000 
(361)
— 
(15,120)

— 
4,491 
— 
4,491 
(36,155)
60,445 
24,290 

24,228 
62 
24,290 

(491)

(1)

126  $

6 

$

$

$

$

$

$

 
 
Table of Contents

Regulus Therapeutics Inc.
NOTES TO FINANCIAL STATEMENTS

1. The Business, Basis of Presentation and Summary of Significant Accounting Policies

We are a clinical-stage biopharmaceutical company focused on discovering and developing first-in-class drugs targeting microRNAs to treat diseases with

significant unmet medical need. We were formed in 2007 when Alnylam Pharmaceuticals, Inc. ("Alnylam") and Ionis Pharmaceuticals, Inc. ("Ionis")
contributed significant intellectual property, know-how and financial and human capital to pursue the development of drugs targeting microRNAs pursuant to a
license and collaboration agreement.

Basis of Presentation

On June 24, 2022, we filed a Certificate of Amendment of Amended and Restated Certificate of Incorporation with the Secretary of State of the state of

Delaware to effect a 1-for-10 reverse stock split of our issued and outstanding common stock. The primary purpose of the reverse stock split was to raise the per
share trading price of our common stock to seek to maintain the listing of our common stock on The Nasdaq Capital Market. At the effective time of the reverse
stock split, 5:00 p.m. on June 28, 2022, each 10 shares of our issued and outstanding common stock were automatically combined and converted into one issued
and outstanding share of common stock. All of our stock options, restricted stock units ("RSUs") and warrants outstanding immediately prior to the reverse
stock split, as well as the conversion ratio of our outstanding convertible preferred stock, were proportionately adjusted. All issued and outstanding common
stock, options exercisable for common stock, restricted stock units, common stock issuable upon conversion of outstanding convertible preferred stock, warrants
and per share amounts contained in these financial statements have been retrospectively adjusted.

Liquidity

Through December 31, 2023, we have principally been financed through net proceeds received from the sale of our common stock and other equity
securities, debt financings, up-front payments and milestones received from collaboration agreements, totaling $557.7 million. As of December 31, 2023, we
had approximately $23.8 million of cash and cash equivalents. Based on our operating plans, we believe our cash and cash equivalents will be sufficient to fund
our planned operations for at least 12 months following the issuance of these financial statements. As of December 31, 2023, we are in compliance with all loan
agreement covenants.

We intend to seek additional capital through equity and/or debt financings, collaborative or other funding arrangements with partners or through other
sources of financing. Should we seek additional financing from outside sources, we may not be able to raise such financing on terms acceptable to us or at all. If
we are unable to raise additional capital when required or on acceptable terms, we may be required to scale back or discontinue the advancement of product
candidates, reduce headcount, file for bankruptcy, reorganize, merge with another entity, or cease operations.

If we are unable to raise additional capital when needed, we may have to liquidate our assets, and in doing so might realize significantly less for those

assets than the values at which they are carried on our financial statements. Stockholders may lose all or part of their investment in our common stock.

Use of Estimates

Our financial statements are prepared in accordance with GAAP, which requires us to make estimates and assumptions that affect the reported amounts of
assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities in our financial statements and accompanying notes. An estimated
loss contingency is accrued in our financial statements if it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated.
Although these estimates are based on our knowledge of current events and actions we may undertake in the future, actual results may ultimately differ from
these estimates and assumptions.

Stock-Based Compensation

We account for stock-based compensation expense related to stock options granted to employees and members of our board of directors by estimating the

fair value of each stock option on the date of grant using the Black-Scholes option pricing model. We recognize stock-based compensation expense using the
accelerated multiple-option approach. Under the accelerated multiple-option approach (also known as the graded-vesting method), we recognize compensation
expense over the requisite service period for each separately vesting tranche of the award as though the award was in substance multiple awards, resulting in
accelerated expense recognition over the vesting period. For performance-based awards granted to employees (i) the fair

64

Table of Contents

value of the award is determined on the grant date, (ii) we assess the probability of the individual milestones under the award being achieved and (iii) the fair
value of the shares subject to the milestone is expensed over the implicit service period commencing once management believes the performance criteria is
probable of being met.

We account for restricted stock units by determining the fair value of each restricted stock unit based on the closing market price of our common stock on

the date of grant. We recognize stock-based compensation expense using the accelerated multiple-option approach over the requisite service periods of the
awards.

Clinical Trial and Preclinical Study Accruals

We make estimates of our accrued expenses for clinical trial and preclinical study activities as of each balance sheet date in our financial statements based
on the facts and circumstances known to us at that time. These accruals are based upon estimates of costs incurred and fees that may be associated with services
provided by clinical trial investigational sites and CROs and for other clinical trial-related activities. Payments under certain contracts with such parties depend
on factors such as successful enrollment of patients, site initiation and progression through the various stages of our clinical trials. In accruing for these services,
we estimate the time period over which services will be performed and the level of effort to be expended in each period. If possible, we obtain information
regarding unbilled services directly from these service providers. However, we may be required to estimate these services based on other information available
to us. If we underestimate or overestimate the activities or fees associated with a study or service at a given point in time, adjustments to research and
development expenses may be necessary in future periods. Historically, our estimated accrued liabilities have approximated actual expense incurred. Subsequent
changes in estimates may result in a material change in our accruals.

Prepaid Materials

We capitalize the purchase of certain raw materials and related supplies for use in the manufacturing of drug product in our preclinical and clinical
development programs, as we have determined that these materials have alternative future use. We can use these raw materials and related supplies in multiple
clinical drug products, and therefore have future use independent of the development status of any particular program until it is utilized in the manufacturing
process. We expense the cost of materials when used. We periodically review these capitalized materials for continued alternative future use and write down the
asset to its net realizable value in the period in which an impairment is identified.

Research and Development

Research and development costs are expensed as incurred and consist of costs associated with research activities supporting our drug discovery efforts,

compensation and related benefits, non-cash stock-based compensation, license fees, laboratory supplies and associated overhead and facility costs.

Income Taxes

Income taxes are accounted for under the asset and liability method. This approach requires the recognition of deferred tax assets and liabilities for the

expected future tax consequences of the differences between the tax basis of assets or liabilities and their carrying amounts in the financial statements using the
enacted tax rates and laws that are anticipated to be in effect when the differences are expected to reverse. We provide a valuation allowance against net deferred
tax assets if it is more likely than not that these items will either expire before we are able to realize their benefit or if future deductibility is uncertain.

In accordance with the accounting standards for uncertain tax positions, we evaluate the recognition threshold and measurement attribute criteria for the

financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position
must be more likely than not to be sustained upon examination by taxing authorities.

Cash and Cash Equivalents

We classify time deposits and other investments that are highly liquid and have maturities of 90 days or less at the date of purchase as cash equivalents.

The carrying amounts approximate fair value due to the short maturities of these instruments.

Concentrations of Credit Risk

Financial instruments that potentially subject us to significant concentrations of credit risk consist primarily of cash equivalents and short-term

investments. We maintain deposits in federally insured financial institutions in excess of federally

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Table of Contents

insured limits. We have not experienced any material losses in such accounts and believe we are not exposed to significant risk. We have invested our excess
cash primarily in money market funds and U.S. Treasury securities. Additionally, we adhere to established guidelines regarding approved investments and
maturities of investments, which are designed to preserve their principal value and maintain liquidity.

Property and Equipment

We carry our property and equipment at cost, which consists of lab equipment, computer equipment and software, furniture and fixtures and leasehold
improvements. Property and equipment is depreciated using the straight-line method over the estimated useful lives (generally three to five years). Leasehold
improvements are amortized over the lesser of their useful life or the remaining lease term, including any renewal periods that are deemed to be reasonably
assured. Repair and maintenance costs that do not improve service potential or extend economic life are expensed as incurred.

Impairment of Long-Lived Assets

We regularly review the carrying amount of our property, equipment and intangible assets to determine whether indicators of impairment may exist which
warrant adjustments to carrying values or estimated useful lives. If indications of impairment exist, projected future undiscounted cash flows associated with the
asset are compared to the carrying amount to determine whether the asset’s value is recoverable. If the carrying value of the asset exceeds such projected
undiscounted cash flows, the asset will be written down to its estimated fair value. No impairment charges were recorded during the years ended December 31,
2023 or 2022.

Segment Reporting

Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the

chief operating decision-maker in making decisions regarding resource allocation and assessing performance. To date, we have viewed our operations and
managed our business as one segment operating primarily within the United States.

Comprehensive Loss

Comprehensive loss is defined as the change in equity during a period from transactions and other events and/or circumstances from non-owner sources.
Our only component of other comprehensive loss is unrealized loss on available-for-sale securities. Comprehensive loss has been reflected in the statements of
operations and comprehensive loss and as a separate component in the statements of stockholders’ equity for all periods presented.

Leases

At the inception of a contractual arrangement, we determine whether the contract contains a lease by assessing whether there is an identified asset and
whether the contract conveys the right to control the use of the identified asset in exchange for consideration over a period of time. For operating leases with an
initial term greater than 12 months, we recognize operating lease right of use assets ("ROU assets") and operating lease liabilities based on the present value of
lease payments over the lease term at the commencement date. Operating lease ROU assets are comprised of the lease liability plus any lease payments made
and excludes lease incentives. Lease terms include options to renew or terminate the lease when we are reasonably certain that the renewal option will be
exercised or when it is reasonably certain that the termination option will not be exercised. For our operating leases, we generally cannot determine the interest
rate implicit in the lease, in which case we use our incremental borrowing rate as the discount rate for the lease. We estimate our incremental borrowing rate for
our operating leases based on what we would normally pay to borrow on a collateralized basis over a similar term for an amount equal to the lease payments.
Operating lease expense is recognized on a straight-line basis over the lease term. Leases with a lease term of 12 months or less at inception are not recorded on
the balance sheet. Instead, we recognize lease expense for these leases on a straight-line basis over the lease term. Our lease agreements do not contain any
material variable lease payments, residual value guarantees or restrictive covenants. Certain leases require us to pay taxes, insurance, utilities, and maintenance
costs for the building, which do not represent lease components. We elected to not separate lease and non-lease components.

Fair Value of Financial Instruments

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We follow ASC 820-10 issued by the FASB with respect to fair value reporting for financial assets and liabilities. The guidance defines fair value,

provides guidance for measuring fair value and requires certain disclosures. The guidance does not apply to measurements related to share-based payments. The
guidance discusses valuation techniques such as the market approach (comparable market prices), the income approach (present value of future income or cash
flow), and the cost approach (cost to replace the service capacity of an asset or replacement cost). The guidance establishes a fair value hierarchy that prioritizes
the inputs to valuation techniques used to measure fair value into three broad levels.

Our financial instruments consist of cash and cash equivalents, contract and other receivables, accounts payable, accrued liabilities, and our Term Loan.

Fair value estimates of these instruments are made at each reporting period end based on relevant market information. These estimates may be subjective in
nature and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. The carrying amount of cash, cash
equivalents, contract and other receivables, accounts payable, and accrued liabilities are generally considered to be representative of their respective fair values
because of the short-term nature of those instruments. We believe that the fair value of the Term Loan approximates its carrying value.

Recent Accounting Pronouncements

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial
Instruments. Subsequently, in November 2018, the FASB issued ASU 2018-19, Codification Improvements to Topic 326, Financial Instruments-Credit
Losses. ASU 2016-13 requires entities to measure all expected credit losses for most financial assets held at the reporting date based on an expected loss model
which includes historical experience, current conditions, and reasonable and supportable forecasts. ASU 2016-13 also requires enhanced disclosures to help
financial statement users better understand significant estimates and judgments used in estimating credit losses. This ASU is effective for smaller reporting
companies for fiscal years beginning after December 15, 2022, with early adoption permitted. The adoption of this guidance had no impact on our financial
statements and disclosures.

In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848), which provides guidance around reference rate reform initiatives
to identify alternative reference rates that are more observable or transaction-based and less susceptible to manipulation in response to concerns about structural
risks of interbank offered rates and the risk of cessation of the London Interbank Offered Rate ("LIBOR"). The amendments in the ASU provide option
expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions affected by reference rate reform and apply only if such
contracts, hedging relationships and other transactions that reference LIBOR or another reference rate are expected to be discontinued because of reference rate
reform. On December 21, 2022, the FASB issued ASU No. 2022-06, Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848, which
deferred the sunset date in Topic 848 from December 31, 2022 to December 31, 2024. The ASU became effective upon issuance. We adopted this guidance in
June 2023, when we entered into an amendment to our loan agreement (see note 9).

2. Net Loss Per Share

Basic net loss per share is calculated by dividing net loss by the weighted average number of common shares outstanding for the period, without
consideration for common stock equivalents. Diluted net loss per share is calculated by dividing net loss by the weighted-average number of common share
equivalents outstanding for the period determined using the treasury stock method or if-converted method. Dilutive common stock equivalents are comprised of
stock options, restricted stock units, warrants and convertible preferred stock outstanding. For all periods presented, there is no difference in the number of
shares used to calculate basic and diluted net loss per share.

Potentially dilutive securities not included in the calculation of diluted net loss per common share, because to do so would be anti-dilutive, were (in

common stock equivalent shares) 29,216,399 shares for the year ended December 31, 2023, consisting of convertible preferred stock, warrants, stock options
and restricted stock units, and 13,200,906 shares for the year ended December 31, 2022, consisting of convertible preferred stock, warrants, stock options and
restricted stock units.

3. Investments

Historically, we have invested our excess cash primarily in debt instruments of financial institutions, corporations, U.S. government-sponsored agencies

and the U.S. Treasury. We generally hold our investments to maturity and do not sell our investments before we have recovered our amortized cost basis.

As of December 31, 2023, our cash balance was comprised entirely of cash and cash equivalents (money market funds) and there was no unrealized gain

or loss.

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As of December 31, 2022

U.S. Treasury securities

4. Fair Value Measurements

Maturity (in
years)

Amortized cost

Gains

Losses

Estimated
value

Unrealized

1 or less $
$

14,944  $
14,944  $

—  $
—  $

(12) $
(12) $

14,
14,

We have certain financial assets recorded at fair value which have been classified as Level 1, 2, or 3 within the fair value hierarchy as described in the

accounting standards for fair value measurements.

Accounting standards define fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the
principal or most advantageous market for the asset or liability in an orderly transaction between market participants as of the measurement date. Market
participants are buyers and sellers in the principal market that are (i) independent, (ii) knowledgeable, (iii) able to transact, and (iv) willing to transact. The
accounting standards provide an established hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use
of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs that market participants would use in
valuing the asset or liability and are developed based on market data obtained from independent sources. Unobservable inputs are inputs that reflect our
assumptions about the factors that market participants would use in valuing the asset or liability. The accounting standards prioritize the inputs used in
measuring the fair value into the following hierarchy:

•

•

•

Level 1 includes financial instruments for which quoted market prices for identical instruments are available in active markets.

Level 2 includes financial instruments for which there are inputs other than quoted prices included within Level 1 that are observable for the instrument
such as quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets with insufficient volume or
infrequent transactions (less active markets) or model-driven valuations in which significant inputs are observable or can be derived principally from,
or corroborated by, observable market data.

Level 3 includes financial instruments for which fair value is derived from valuation techniques in which one or more significant inputs are
unobservable, including management’s own assumptions.

Financial Assets Measured at Fair Value

The following table presents our fair value hierarchy for assets measured at fair value on a recurring basis as of December 31, 2023 and 2022 (in

thousands):

Cash equivalents:

Money market funds

Cash equivalents:

Money market funds
U.S. Treasury securities

Total

Level 1

Level 2

Level 3

Fair value as of December 31, 2023

23,084  $
23,084  $

23,084  $
23,084  $

—  $
—  $

Total

Level 1

Level 2

Level 3

Fair value as of December 31, 2022

21,490  $
14,932 
36,422  $

21,490  $
14,932 
36,422  $

—  $
— 
—  $

— 
— 

— 
— 
— 

$
$

$

$

We obtain pricing information from quoted market prices or quotes from brokers/dealers. We have historically determined the fair value of our investment

securities using standard observable inputs, including reported trades, broker/dealer quotes, bids and/or offers.

5. Collaborations

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Sanofi

In February 2014, we and Sanofi entered into a second amended and restated collaboration and license agreement (the “Sanofi Agreement”) to discover,
develop and commercialize microRNA therapeutics to focus on specific orphan disease and oncology targets. Under the terms of the Sanofi Agreement, Sanofi
had opt-in rights to our clinical fibrosis program targeting miR-21 for the treatment of Alport syndrome (which rights were relinquished by Sanofi in November
2018), our preclinical program targeting miR-21 for oncology indications, and our preclinical program targeting miR-221/222 for HCC. We were responsible
for developing each of these programs to proof-of-concept, at which time Sanofi had an exclusive option on each program. We were eligible to receive royalties
on microRNA therapeutic products commercialized by Sanofi and would have had have the right to co-promote these products relating to our preclinical
program targeting miR-221/222.

On January 6, 2023, Sanofi delivered to us a written notice of Sanofi's election to terminate, in its entirety, the Sanofi Agreement. Previously, on July 12,
2022, we received notification from Sanofi of its decision to terminate the Phase 2 clinical study of lademirsen for the treatment of Alport syndrome for failure
to meet Sanofi’s pre-defined futility criteria. In accordance with the Sanofi Agreement, the termination became effective on February 5, 2023, which was 30
days following the date of delivery of the notice by Sanofi. As of the effective date of the termination of the Sanofi Agreement, we are no longer eligible to
receive any option exercise fees, royalties, or development, clinical, regulatory or commercial milestones from Sanofi.

6. Property and Equipment, net

The following table summarizes our major classes of property and equipment (in thousands): 

Laboratory equipment
Computer equipment and software
Furniture and fixtures
Leasehold improvements
Construction in progress

Less accumulated depreciation and amortization
Property and equipment, net

December 31,

2023

2022

$

$

4,687  $
367 
12 
115 
126 
5,307 
(4,246)
1,061  $

4,359 
470 
12 
115 
— 
4,956 
(4,420)
536 

Depreciation and amortization of property and equipment of $0.2 million and $0.1 million was recorded for the years ended December 31, 2023 and

2022, respectively.

7. Intangible Assets, net

The following table summarizes our major classes of intangible assets (in thousands):

Patents
Accumulated amortization - Patents
Intangibles, net

December 31,

2023

2022

$

$

133  $
(100)

33  $

183 
(121)
62 

Intangible asset amortization of less than $0.1 million was recorded for the years ended December 31, 2023 and 2022. Amortization of intangible assets
over the next five years is expected to be less than $0.1 million per year. The weighted-average period over which the amortization remaining at December 31,
2023 is expected to be recognized is approximately 11.4 years.

8. Commitments and Contingencies

License Agreements

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We have license agreements with third parties that require us to make annual license maintenance payments and future payments upon the success of

licensed products that include milestones and/or royalties. Minimum future payments over the next five years are not material.

Litigation

From time to time, we may be involved in various lawsuits, legal proceedings, or claims that arise in the ordinary course of business. We believe there

are no claims or actions pending against us at December 31, 2023 which will have, individually, or in the aggregate, a material adverse effect on our business,
liquidity, financial position or results of operations. Litigation, however, is subject to inherent uncertainties, and an adverse result in such matters may arise from
time to time that may harm our business.

9. Debt

Term Loan

On June 17, 2016, we entered into a loan and security agreement ("Loan Agreement") with Oxford Finance, LLC, (the "Lender"), pursuant to which we

received $20.0 million in proceeds, net of debt issuance costs, on June 22, 2016 (the "Term Loan").

The outstanding Term Loan bore interest at a floating per annum rate equal to (i) 8.51% plus (ii) the greater of (a) the 30 day U.S. Dollar LIBOR rate

reported in The Wall Street Journal on the last business day of the month that immediately precedes the month in which the interest will accrue and (b) 0.44%.
In June 2023, we entered into an amendment to the Loan Agreement (the “Rate Amendment”) pursuant to which, effective July 1, 2023, the Term Loan bears
interest at a floating per annum rate equal to the greater of (a) 8.95% and (b) the sum of (i) the 1-month CME Term Secured Overnight Financing Rate
("SOFR") reference rate on the last business day of the month that immediately precedes the month in which the interest will accrue, (ii) 0.10% and (iii) 8.51%.

Under the original Loan Agreement, we were required to make interest-only payments through June 1, 2018, followed by 24 equal monthly payments of

principal and unpaid accrued interest.

The Loan Agreement was amended ten times between October 2017 through August 2020. On December 31, 2021, we entered into an eleventh
amendment to the Loan Agreement (the "Eleventh Amendment"). Under the terms of the Eleventh Amendment, the maturity date for the Term Loan was
extended to May 1, 2024. In addition, under the Eleventh Amendment, our required monthly payments to the Lender were comprised of interest only through
and including December 1, 2022.

The Eleventh Amendment also provides that we are required to maintain a minimum cash balance of $5.0 million. As consideration for the Lender’s entry

into the Eleventh Amendment, we made a payment of $0.3 million to the Lender.

We used the proceeds from the Term Loan solely for working capital and to fund our general business requirements. Our obligations under the Loan

Agreement are secured by a first priority security interest in substantially all of our current and future assets, other than our intellectual property, for which the
Lender currently has a positive lien. We have also agreed not to encumber our intellectual property assets, except as permitted by the Loan Agreement. The
Loan Agreement includes customary events of default, including instances of a material adverse change in our operations, that may require prepayment of the
outstanding Term Loan. We are in compliance with all Loan Agreement covenants as of the date of the filing of this Form 10-K.

As of December 31, 2023, $1.4 million of principal was outstanding under the Term Loan. An additional $1.3 million is also payable at the conclusion of
the Term Loan (the related $1.3 million accrued liability balance is presented in other current liabilities on our balance sheet as of December 31, 2023). We had
less than $0.1 million of debt issuance costs outstanding as of December 31, 2023, which are being accreted to interest expense over the life of the Term Loan
using an effective interest rate of 8.98%. The exit fees are being accrued over the life of the Term Loan through interest expense. All amounts that remained
payable under the Term Loan as of December 31, 2023 are due in 2024.

10. Stockholders’ Equity

Common Stock

As of December 31, 2023, there were 20,222,672 shares of common stock outstanding. Each share of common stock is entitled to one vote. The holders of

the common stock are also entitled to receive dividends whenever funds are legally available and when declared by our Board of Directors.

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Reverse Stock Split

On June 24, 2022, we filed a Certificate of Amendment of Amended and Restated Certificate of Incorporation with the Secretary of State of the state of

Delaware to effect a 1-for-10 reverse stock split of our issued and outstanding common stock. The primary purpose of the reverse stock split was to raise the per
share trading price of our common stock to seek to maintain the listing of our common stock on The Nasdaq Capital Market. At the effective time of the reverse
stock split, 5:00 p.m. on June 28, 2022, each 10 shares of our issued and outstanding common stock were automatically combined and converted into one issued
and outstanding share of common stock. All of our stock options, RSUs and warrants outstanding immediately prior to the reverse stock split, as well as the
conversion ratio of our outstanding convertible preferred stock, were proportionately adjusted. All issued and outstanding common stock, options exercisable
for common stock, restricted stock units, common stock issuable upon conversion of outstanding convertible preferred stock, warrants and per share amounts
contained in these financial statements have been retrospectively adjusted.

2019 Equity Incentive Plan

On June 15, 2019 the Company's board of directors approved, and on August 1, 2019 the Company's stockholders approved, the Company's 2019 Equity

Incentive Plan (the "2019 Plan"). The 2019 Plan is the successor to and continuation of the Company's 2012 Equity Incentive Plan. The number of shares
authorized for issuance under the 2019 Plan may be increased by (a) the shares subject to outstanding stock awards granted under the Company’s 2009 Equity
Incentive Plan (the "2009 Plan") and the Company’s 2012 Equity Incentive Plan (together with the 2009 Plan, the "Prior Plans") that on or after the effective
date of the 2019 Plan (i) expire or terminate for any reason prior to exercise or settlement; (ii) are forfeited because of the failure to meet a contingency or
condition required to vest such shares or otherwise return to the Company, or (iii) are reacquired, withheld (or not issued) to satisfy a tax withholding obligation
in connection with an award or to satisfy the purchase price or exercise price of a stock award. No further grants will be made under the Prior Plans. In addition,
on January 22, 2020, an additional 416,686 shares of common stock became available for issuance under the 2019 Plan pursuant to the second closing under our
May 2019 securities purchase agreement. Further, on January 1  of each year, for a period of not more than ten years, beginning on January 1, 2021 and
continuing through January 1, 2029, the number of shares authorized for issuance under the 2019 Plan will increase by 5.0% of the total number of shares of our
capital stock outstanding on December 31 of the preceding calendar year, or a lesser number of shares as may be determined by our Board of Directors. In
addition, on June 13, 2023, our stockholders approved an amendment to the 2019 Plan, which authorized an additional 5,000,000 shares of common stock
available for issuance thereunder. As of December 31, 2023, 819,459 shares of common stock were available for new equity award grants under the 2019 Plan
and 7,348,950 shares of common stock were reserved for issuance pursuant to equity awards outstanding under the 2019 Plan as of December 31, 2023.

st

2021 Inducement Plan

On November 23, 2021, our Board of Directors adopted the 2021 Inducement Plan (the “Inducement Plan”), which became effective immediately.
Stockholder approval of the Inducement Plan was not required pursuant to Rule 5635I(4) of the Nasdaq Listing Rules. The Inducement Plan initially reserved
200,000 shares of common stock and provides for the grant of non-qualified stock options that was used exclusively for grants to individuals that were not
previously employees or directors of the Company, as an inducement material to the individual’s entry into employment with the Company. The authorized
number of shares available for grant under the Inducement Plan was subsequently increased in October 2022 to 540,000 shares in the aggregate, and
subsequently increased again in December 2023 to 1,030,000 shares in the aggregate.

Under the Inducement Plan, options are granted with varying vesting terms, but typically vested over four years, with 25% of the total grant vesting on the

first anniversary of the effective date of the option grant and the remaining grant vesting monthly thereafter over the following 36 months.

As of December 31, 2023, 500,000 shares of common stock were reserved for future issuance under the Inducement Plan and 530,000 shares of common

stock were reserved for future issuance pursuant to equity awards outstanding under the Inducement Plan.

2022 Employee Stock Purchase Plan

In June 2022, our stockholders approved and we adopted the 2022 Employee Stock Purchase Plan (the “2022 Purchase Plan”), which enables participants

to contribute up to 15% of such participant’s eligible compensation during a defined rolling six-month periods to purchase our common stock. The purchase
price of common stock under the 2022 Purchase Plan will be the lesser of: (i) 85% of the fair market value of our common stock at the inception of the
enrollment period or (ii) 85% of the fair market value of our common stock at the applicable purchase date. The 2022 Purchase Plan supersedes the 2012
Employee Stock Purchase Plan, and no further offerings will be made under the 2012 Employee Stock Purchase Plan. As of December 31,

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2023, a maximum of 137,424 shares of our common stock were reserved for future issuance and have been authorized for purchase under the 2022 Purchase
Plan.

2023 Private Placement of Common Stock and Non-Voting Preferred Stock

On April 13, 2023, we entered into a Securities Purchase Agreement (the “April 2023 SPA”) with certain institutional and other accredited investors (the
“2023  Purchasers”),  pursuant  to  which  we  agreed  to  sell  and  issue  shares  of  our  common  stock  and  shares  of  our  newly  designated  non-voting  convertible
preferred stock in a private placement transaction (the "2023 PIPE").

At the closing under the April 2023 SPA that occurred on April 13, 2023 (the “2023 Closing”), we sold and issued to the 2023 Purchasers (i) 2,615,536

shares of common stock at a purchase price of $0.9001 per share, and (ii) 140,827 shares of non-voting Class A-5 convertible preferred stock, in lieu of shares
of common stock, at a price of $90.01 per share. Total gross proceeds from the 2023 Closing were approximately $15.0 million. Each share of non-voting Class
A-5 convertible preferred stock is convertible into 100 shares of common stock, subject to certain beneficial ownership conversion limitations. An aggregate of
222,198 shares of common stock were purchased for $0.2 million by a director of the Company at the 2023 Closing.

We  evaluated  the  non-voting  Class  A-5  convertible  preferred  stock  sold  in  the  2023  PIPE  under  ASC  480,  Distinguishing  Liabilities  from  Equity,  and
ASC 815, Derivatives and Hedging, and determined permanent equity treatment was appropriate for these freestanding financial instruments and there were no
embedded features that required bifurcation.

Additional Outstanding Non-Voting Preferred Stock and Warrants

In May 2019, we sold and issued (i) 973,045 shares of common stock (ii) 415,898 shares of non-voting Class A-1 convertible preferred stock and (iii)

accompanying warrants to purchase an aggregate of 1,388,943 shares of common stock. Each share of non-voting Class A-1 convertible preferred stock is
convertible into one share of common stock, subject to certain beneficial ownership conversion limitations. The warrants are exercisable for a period of five
years following the date of issuance and have an exercise price of $10.80 per share, subject to proportional adjustments in the event of stock splits or
combinations or similar events. The warrants are also exercisable on a net exercise "cashless" basis.

In December 2019, we sold and issued 3,288,390 shares of non-voting Class A-2 convertible preferred stock and accompanying warrants to purchase an
aggregate of 3,288,390 shares of common stock. Each share of non-voting Class A-2 convertible preferred stock is convertible into one share of common stock,
subject to certain beneficial ownership conversion limitations. The warrants will be exercisable for a period of five years following the date of issuance and
have an exercise price of $6.66 per share, subject to proportional adjustments in the event of stock splits or combinations or similar events. The warrants are
also exercisable on a net exercise “cashless” basis.

In December 2020, we sold and issued (i) 2,434,152 shares of common stock (ii) 272,970 shares of non-voting Class A-3 convertible preferred stock and
(iii) accompanying warrants to purchase an aggregate of 2,030,341 shares of common stock. Each share of non-voting Class A-3 convertible preferred stock is
convertible into one share of common stock, subject to certain beneficial ownership conversion limitations. The warrants are exercisable for a period of five
years  following  the  date  of  issuance  and  have  an  exercise  price  of  $7.46  per  share,  subject  to  proportional  adjustments  in  the  event  of  stock  splits  or
combinations or similar events. The warrants are also exercisable on a net exercise "cashless" basis.

In November 2021, we sold and issued (i) 5,892,335 shares of common stock and (ii) 3,725,720 shares of non-voting Class A-4 convertible preferred
stock. Each share of non-voting Class A-4 convertible preferred stock is convertible into one share of common stock, subject to certain beneficial ownership
conversion limitations.

ATM Offering

On December 12, 2018, we entered into a Common Stock Sales Agreement (the “Stock Sales Agreement”) with H.C. Wainwright & Co., LLC (“HCW”),

pursuant to which we may sell and issue shares of our common stock from time to time through HCW, as our sales agent (the “ATM Offering”). We have no
obligation to sell any shares of common stock in the ATM Offering, and may, at any time, suspend offers under the Stock Sales Agreement or terminate the
Stock Sales Agreement. Subject to the terms and conditions of the Stock Sales Agreement, HCW will use its commercially reasonable efforts to sell shares of
our common stock from time to time based upon our instructions (including any price, time or size limits or other parameters or conditions that we may impose,
subject to certain restrictions). We pay HCW a commission of 3.0% of the gross

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sales price of any shares sold under the Stock Sales Agreement. On August 10, 2021, we increased the amount of common stock available for sale in the ATM
Offering under the Stock Sales Agreement to $50.0 million.

A total of 725,192 shares were sold and settled for net proceeds of $1.1 million (net of less than $0.1 million in offering costs) under the ATM Offering

during the year ended December 31, 2023. A total of 2,205,100 shares were sold and settled for proceeds of $4.5 million (net of $0.1 million in offering costs)
under the ATM Offering during the year ended December 31, 2022. At December 31, 2023, approximately $44.2 million remained eligible to be sold in the
ATM Offering, subject to compliance with the rules applicable to sales on Form S-3.

Shares Reserved for Future Issuance

The following shares of common stock were reserved for future issuance as of December 31, 2023 (in thousands):

Class A-1 convertible preferred stock outstanding (as-converted)
Class A-2 convertible preferred stock outstanding (as-converted)
Class A-3 convertible preferred stock outstanding (as-converted)
Class A-4 convertible preferred stock outstanding (as-converted)
Class A-5 convertible preferred stock outstanding (as-converted)
Warrants to purchase Common Stock
Common stock options outstanding
RSUs outstanding
Common stock available for future grant under the 2019 Equity Incentive Plan
Common stock available for future grant under the 2021 Inducement Plan
2022 Employee Stock Purchase Plan
Total common shares reserved for future issuance

257 
1,331 
259 
3,726 
14,083 
6,186 
6,188 
1,161 
819 
500 
137 
34,647 

The following table summarizes our stock option activity under all equity incentive plans for the year ended December 31, 2023 (shares and aggregate

intrinsic value in thousands):

Stock Options outstanding at December 31, 2022

Granted
Exercised
Canceled/forfeited/expired

Stock Options outstanding at December 31, 2023
Vested and exercisable at December 31, 2023

Number of
options

Weighted
average
exercise
price

Weighted average
remaining
contractual term

Aggregate
intrinsic value

1,372  $
5,008  $
—  $
(192) $
6,188  $
1,510  $

7.53 
1.39 
— 
6.79 
2.58 

5.34 

9.0 $

7.9 $

7 

— 

The weighted average grant date fair value per share of employee stock options granted during the years ended December 31, 2023 and 2022 was $1.09

and $2.00, respectively.

There were no stock option exercises during the years ended December 31, 2023 or 2022.

The total compensation cost related to stock options not yet recognized was $3.6 million as of December 31, 2023. The weighted-average period over

which this expense is expected to be recognized is approximately 1.6 years.

The following table summarizes our RSU activity under all equity incentive plans for the year ended December 31, 2023 (shares and aggregate intrinsic

value in thousands): 

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RSUs outstanding at December 31, 2022

Granted
Vested
Canceled/forfeited/expired

RSUs outstanding at December 31, 2023

Number of
options

Weighted
average
grant date fair
value

Weighted average
remaining
contractual term

Aggregate
intrinsic value

70  $
1,161  $
—  $
(70) $
1,161  $

2.57 
1.38 
— 
2.57 

1.38 

2.4 $

1,486 

The total compensation cost related to non-vested RSUs not yet recognized was $1.4 million as of December 31, 2023. The weighted-average period over

which this expense is expected to be recognized is approximately 2.4 years.

Stock-Based Compensation

The following table summarizes the weighted average assumptions used to estimate the fair value of stock options and performance stock awards granted

to employees under our 2019 Equity Incentive Plan, 2021 Inducement Plan and the shares purchasable under our Employee Stock Purchase Plans during the
periods presented:

Stock options

Risk-free interest rate
Volatility
Dividend yield
Expected term (years)

Employee stock purchase plan shares

Risk-free interest rate
Volatility
Dividend yield
Expected term (years)

Year ended December 31,

2023

2022

4.1 %
96.4 %
— 

6.1

4.9 %
89.1 %
— 

0.5

2.0 %
96.1 %
— 

6.1

1.6 %
104.7 %
— 

0.5

Risk-free interest rate - The risk-free interest rate assumption was based on observed interest rates appropriate for the expected term of the stock option grants.

Expected dividend yield - The expected dividend yield assumption was based on the fact that we have never paid cash dividends and have no present intention
to pay cash dividends.

Expected volatility - The expected volatility assumption was based on the historical volatility of the trading price of our common stock.

Expected term - The expected term represents the period of time that options are expected to be outstanding. Because we do not have sufficient historical
exercise behavior data, we determine the expected life using the simplified method, which was an average of the contractual term of the option and its ordinary
vesting period.

Forfeitures - We account for forfeitures as they occur.

The following table summarizes the allocation of our stock-based compensation expense for all stock awards during the periods presented (in thousands): 

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Research and development
General and administrative
Total

11. Defined Contribution Plan

Year ended December 31,

2023

2022

$

$

1,029  $
1,772 
2,801  $

594 
1,583 
2,177 

In 2009, we established an employee 401(k) salary deferral plan (“401(k) Plan”) covering all eligible employees. Active employees who are at least 18

years old and are not otherwise disqualified under the terms of the 401(k) Plan are eligible to participate. Employees may contribute up to 50% of their
compensation per year (subject to a maximum limit prescribed by federal tax law). Under the 401(k) Plan, we may elect to match a discretionary percentage of
employee contributions. We elected to match 50% of employees’ contributions up to 6% of the employees’ eligible salary for the periods presented. We made
matching contributions of $0.2 million and $0.1 million for the years ended December 31, 2023 and 2022, respectively.

12. Income Taxes

The following table summarizes the components of our income tax expense (in thousands):

Current:

Federal
State

Deferred:

Federal
State

Income tax expense

Year ended December 31,

2023

2022

$

$

—  $
1 
1 

— 
— 
— 

1  $

The following is a reconciliation of the expected statutory federal income tax provision to our actual income tax provision (in thousands):

Expected income tax benefit at federal statutory tax rate
State income taxes, net of federal benefit
Tax credits
Change in valuation allowance
Return to provision adjustments
Stock compensation
Reserve for uncertain tax positions
Other
Income tax expense

Year ended December 31,

2023

2022

$

$

(6,308) $
1 
(3,022)
8,081 
39 
755 
453 
2 
1  $

The following table summarizes the significant components of our deferred tax assets and liabilities (in thousands):

75

— 
1 
1 

— 
— 
— 
1 

(5,948)
1 
(1,850)
7,327 
(18)
236 
253 
— 
1 

 
 
 
 
 
 
 
 
Table of Contents

Deferred tax assets:

Net operating loss carryovers
Research and development and other tax credits
Intangibles and property and equipment basis difference
Section 174 research and development
Stock compensation expense
Lease liability
Other

Total deferred tax assets
Total deferred tax liabilities
Gross deferred tax asset
Valuation allowance
Net deferred tax asset

December 31,

2023

2022

$

$

92,609  $
39,532 
255 
6,546 
619 
371 
748 
140,680 
(444)
140,236 
(140,236)

—  $

90,085 
36,963 
496 
3,302 
818 
508 
597 
132,769 
(611)
132,158 
(132,158)
— 

For all periods presented, we have determined that it is more likely than not that our deferred tax asset will not be realized. Accordingly, we have recorded

a valuation allowance to offset the net deferred tax asset of $140.2 million. The valuation allowance increased by approximately $8.1 million and $7.3 million
during the years ended December 31, 2023 and 2022, respectively.

As of December 31, 2023, we had NOL carryforwards for U.S. federal and California state tax purposes of $389.5 million and $146.3 million,

respectively, portions of which begin to expire in 2030 and 2033, respectively. Our federal NOL carryforwards generated in tax years beginning after December
31, 2017 of $126.1 million will carry forward indefinitely.

As of December 31, 2023, we also had federal research and development tax credits, orphan drug credits and California research and development tax
credit carryforwards of $13.0 million, $24.3 million and $10.5 million, respectively. The federal research and development tax credit carryforwards will begin to
expire in 2029 and the federal orphan drug credits will begin to expire in 2034. The California research and development tax credit carryforwards are available
indefinitely.

Pursuant to Sections 382 and 383, use of the Company’s net operating loss and credit carryforwards may be limited if a cumulative change in ownership
of more than 50% (by value) occurs within a three-year period. The Company has not performed an analysis through December 31, 2023 to determine whether
its net operating loss and research and development credit carryforwards are subject to annual limitation under Sections 382 or 383 of the Code, and these
financial statements do not contain any adjustment relating to such potential limitations. However, if the Company experienced an ownership change that
resulted in an annual limitation on the Company’s net operating loss carryforwards under Section 382 of the Code there would be no material impact to the
Company’s financial statements.

The following table summarizes the changes in the amount of our unrecognized tax benefits (in thousands):

Beginning balance of unrecognized tax benefits
Increase (decrease) for prior year tax positions
Increase for current year tax positions
Total

Year Ended December 31,

2023

2022

5,785  $
16 
449 
6,250  $

16,953 
(11,463)
295 
5,785 

$

$

Included in unrecognized tax benefits of $6.3 million at December 31, 2023 was $5.4 million of tax benefits that, if recognized, would reduce our annual

effective tax rate, subject to valuation allowance. We do not expect that there will be a significant change in the unrecognized tax benefits over the next 12
months.

We are subject to taxation in the United States and state jurisdictions where applicable. Our tax years for 2010 and forward are subject to examination by

the U.S. and California tax authorities due to carryforward of unutilized net operating losses and research and development credits.

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It is our practice to recognize interest and/or penalties related to income tax matters in income tax expense. For the years ended December 31, 2023 and

2022, we have not recognized any interest or penalties related to income taxes.

13. Leases

On February 11, 2021, we entered into a lease agreement (the "Campus Point Lease") with ARE-SD Region No. 61, LLC (as successor in interest to ARE-

SD Region No. 58, LLC) ("Campus Point Landlord"), for the lease of approximately 13,438 square feet of rentable area located at 4224 Campus Point Court,
Suite 210, San Diego, California, 92121 (the "Campus Point Premises"). The commencement date of the Campus Point Lease was April 15, 2021. However, for
accounting purposes the lease commencement date was February 11, 2021. We are using the Campus Point Premises as our principal executive offices and as a
laboratory for research and development. The term of the Campus Point Lease (“Campus Point Initial Term”) is 60 months, ending April 30, 2026. The
aggregate base rent due over the initial term of the Campus Point Lease is approximately $3.8 million. We are also responsible for the payment of additional
amounts to cover our share of the annual operating expenses of the building, the annual tax expenses of the building and the utilities costs for the building.
Under the Campus Point Lease, we were required to maintain a deposit of $61,591 in a specially designated bank account, which we recorded as restricted cash
on our balance sheet at December 31, 2023 and 2022.

The table below summarizes our lease liabilities and corresponding ROU assets as of December 31, 2023 and 2022 (in thousands):

Assets
  Operating

Total ROU assets

Liabilities
Current:
  Operating
Long-term:
  Operating

Total lease liabilities

Year Ended December 31,

2023

2022

$
$

$

$

1,477 
1,477 

$
$

713 

$

1,055 
1,768 

$

2,039 
2,039 

649 

1,768 
2,417 

The table below summarizes our lease costs from our statement of operations and cash payments from our statement of cash flows during the years ended

December 31, 2023 and 2022 (in thousands):

Lease cost:

Operating lease cost

Cash payment information:

Operating cash used for operating leases

Total cash paid for amounts included in the measurement of lease liabilities

Year Ended December 31,

2023

2022

$

$
$

690 

776 
776 

$

$
$

690 

754 
754 

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The table below summarizes other non-cash information under our operating lease obligations as of December 31, 2023 and 2022 (in thousands, except

years and rates):

Supplemental non-cash information:
Operating lease liabilities arising from obtaining right-of-use assets

Weighted-average remaining lease term (years) - operating leases
Weighted-average discount rate - operating leases

Year Ended December 31,

2023

2022

$

— 

$

2.3
6.0 %

— 

3.3
6.0 %

We did not have any finance lease obligations as of December 31, 2023 or 2022.

Our future lease payments under our operating lease at December 31, 2023 are as follows (in thousands):

2024
2025
2026
2027
2028
Total operating lease payments

Less: amount representing interest

Present value of obligations under operating lease

Less: current portion

Long-term operating lease obligations

14. Subsequent Event

Private Placement of Common Stock and Non-Voting Preferred Stock

Operating Leases

800
824
277
— 
— 
1,901 
(133)
1,768 
(713)
1,055 

$

$

On March 11, 2024, the Company entered into a Securities Purchase Agreement (the “Purchase Agreement”) with certain institutional and other

accredited investors (the “Purchasers”), pursuant to which the Company sold and issued (i) 45,108,667 shares of common stock, at a purchase price of $1.60 per
share and (ii) 173,915 shares of the Company’s newly designated non-voting Class A-6 convertible preferred stock, par value $0.001 per share (the “Class A-6
Convertible Preferred Stock”), in lieu of shares of Common Stock, at a purchase price of $160.00 per share in a private placement transaction (the “Private
Placement”), which closed on March 14, 2024. The Company received net proceeds of approximately $94.0 million in the Private Placement after deducting
placement agent and financial advisor fees and other expenses.

Stelios Papadopoulos, Ph.D., the Company’s Chairman of the Board of Directors, is a Purchaser under the Purchase Agreement and purchased 250,000

shares of Common Stock.

Each share of Class A-6 Convertible Preferred Stock is convertible into 100 shares of common stock, subject to certain beneficial ownership conversion
limitations. In the event of the Company’s liquidation, dissolution or winding up, holders of Class A-6 Convertible Preferred Stock will participate pari passu
with any distribution of proceeds to holders of common stock, holders of the Company’s Class A-1 convertible preferred stock, holders of the Company’s Class
A-2 convertible preferred stock, holders of the Company’s Class A-3 convertible preferred stock, holders of the Company’s Class A-4 convertible preferred
stock, holders of the Company’s Class A-5 convertible preferred stock and the holders of any series of class of the Company’s preferred stock or other capital
stock thereafter created ranking on its terms on parity with the Class A-6 Convertible Preferred Stock or the common stock. Holders of Class A-6 Convertible
Preferred Stock are entitled to receive dividends on shares of Class A-6 Convertible Preferred Stock equal (on an as converted to common stock basis) to, and in
the same form as, dividends actually paid on the common stock. Shares of Class A-6 Convertible Preferred Stock generally have no voting rights, except as
required by law.

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

None.

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Item 9A.         Controls and Procedures

Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to provide reasonable assurance that information required to be disclosed in our periodic

and current reports that we file with the SEC is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms,
and that such information is accumulated and communicated to our management, including our principal executive officer and our principal financial officer, as
appropriate, to allow timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, management
recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable and not absolute assurance of achieving
the desired control objectives. In reaching a reasonable level of assurance, management is required to apply its judgment in evaluating the cost-benefit
relationship of possible controls and procedures. In addition, the design of any system of controls also is based, in part, upon certain assumptions about the
likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions; over
time, controls may become inadequate because of changes in conditions, or the degree of compliance with policies or procedures may deteriorate. Because of
the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected.

As of December 31, 2023, we carried out an evaluation, under the supervision and with the participation of our management, including our principal
executive officer and our principal financial officer, of the effectiveness of the design and operation of our disclosure controls and procedures, as defined in
Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended. Based on this evaluation, our principal executive officer and our
principal financial officer concluded that our disclosure controls and procedures were effective at a reasonable assurance level as of December 31, 2023.

Management’s Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting as such term is defined in Exchange Act

Rule 13a-15(f) and 15(d)-15(f). Internal control over financial reporting is a process designed under the supervision and with the participation of our
management, including our principal executive officer and our principal financial officer, to provide reasonable assurance regarding the reliability of financial
reporting and the preparation of financial statements for external purposes in accordance with GAAP.

As of December 31, 2023, our management assessed the effectiveness of our internal control over financial reporting using the criteria set forth by the
Committee of Sponsoring Organizations of the Treadway Commission in Internal Control-Integrated Framework (2013 Framework). Based on this assessment,
our management concluded that, as of December 31, 2023, our internal control over financial reporting was effective based on those criteria.

Changes in Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting as such term is defined in Rule 13a-

15(f) of the Exchange Act. An evaluation was also performed under the supervision and with the participation of our management, including our principal
executive officer and our principal financial officer, of any change in our internal control over financial reporting that occurred during our last fiscal quarter and
that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting. That evaluation did not identify any change
in our internal control over financial reporting that occurred during our latest fiscal quarter that has materially affected, or is reasonably likely to materially
affect, our internal control over financial reporting..

Item 9B.    Other Information

None.

Item 9C.    Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

Not applicable.

Item 10.     Directors, Executive Officers and Corporate Governance

PART III

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The information required by this item and not set forth below will be set forth in the sections headed “Election of Directors” and “Executive Officers” in

our Proxy Statement for our 2024 Annual Meeting of Stockholders ("Proxy Statement") to be filed with the SEC no later than April 29, 2024, and is
incorporated herein by reference.

We have adopted a code of ethics for directors, officers (including our principal executive officer and our principal financial officer) and employees,
known as the Code of Business Conduct and Ethics. The Code of Business Conduct and Ethics is available on our website at http://www.regulusrx.com under
the Corporate Governance section of our Investor Relations page. We will promptly disclose on our website (i) the nature of any amendment to the policy that
applies to our principal executive officer, principal financial and accounting officer or persons performing similar functions and (ii) the nature of any waiver,
including an implicit waiver, from a provision of the policy that is granted to one of these specified individuals that is required to be disclosed pursuant to SEC
rules and regulations, the name of such person who is granted the waiver and the date of the waiver.

Stelios Papadopoulos, Ph.D. Chair of the Board, has served on our Board of Directors since our conversion to a corporation in January 2009 and as our
Chair since June 2013, and prior to that was a director of Regulus Therapeutics LLC since July 2008. Since December 1994, Dr. Papadopoulos has served as a
director and, since 1998, as Chair of the Board for Exelixis, Inc., a publicly held biotechnology company, which he co-founded. From July 2008 until June
2023, Dr. Papadopoulos served as a member of the board of directors of Biogen Inc. (formerly Biogen Idec Inc.), a publicly held biopharmaceutical company,
and served as its Chair of the board of directors from June 2014 until June 2023. From August 2020 until June 2023, Dr. Papadopoulos served as Chair of the
board of Eucrates Biomedical Acquisition Corp., a special purpose acquisition corporation. From 2000 to 2006, Dr. Papadopoulos served as Vice Chair with
Cowen and Co., LLC, an investment banking firm. From 1987 to 2000, Dr. Papadopoulos served in several positions with PaineWebber, Incorporated, most
recently as Chair of PaineWebber Development Corp., a PaineWebber subsidiary focusing on biotechnology. Dr. Papadopoulos holds an M.S. in Physics, a
Ph.D. in Biophysics and an MBA in Finance from New York University.

David Baltimore, Ph.D. has served on our Board of Directors since our conversion to a corporation in January 2009, and prior to that was a director of

Regulus Therapeutics LLC since November 2007. Dr. Baltimore is currently President Emeritus and Judge Shirley Hufstedler Distinguished Professor of
Biology at the California Institute of Technology (“Caltech”), and before that from 1997 to 2006, Dr. Baltimore served as President of the California Institute of
Technology. From 1968 to 1972, Dr. Baltimore served as an associate professor at the Massachusetts Institute of Technology, and from 1972 to 1997 was a
professor at the Massachusetts Institute of Technology. From 1990 to 1994, Dr. Baltimore served as professor at The Rockefeller University where he also
served as the President from July 1990 to December 1991. Dr. Baltimore served as a director of Amgen Inc., a publicly held biotechnology company from 1997
to May 2018, and also served as a director of Immune Design Corp., a publicly held biotechnology company, from 1997 until its acquisition by Merck & Co.,
Inc. in February 2019. In 1975, Dr. Baltimore received the Nobel Prize in Medicine as a co-recipient. Dr. Baltimore holds a Ph.D. in Biology from The
Rockefeller University and a B.A. with High Honors in Chemistry from Swarthmore College.

Kathryn J. Collier has served on our Board of Directors since April 2018. From March 2022 until January 2024, Ms. Collier served as the Senior Vice
President of Corporate Finance for Pattern Energy Group LP, a privately-held renewable energy company. From July 2019 to March 2022, Ms. Collier served as
the Vice President for Audit Services of Sempra Energy (“Sempra”), a publicly-traded energy services holding company overseeing the internal audit function
for Sempra, including the Financial Leadership Program and audit oversight of Sempra’s operating companies. From March 2019 to July 2019, Ms. Collier
served as the Chief Strategy and Origination Officer for Sempra LNG, a wholly-owned subsidiary of Sempra. From August 2018 to March 2019, Ms. Collier
served as Chief Financial Officer and Chief Administrative Officer for Sempra North America Infrastructure. Ms. Collier also previously served as Vice
President and Treasurer for Sempra from April 2012 to August 2018. Prior to joining Sempra in 2012, Ms. Collier held several executive positions within global
corporation and investment banking at Bank of America Merrill Lynch. Ms. Collier holds a B.S. in accounting from Valparaiso University.

Joseph P. Hagan has served as our Chief Executive Officer and principal executive officer since May 2017. Mr. Hagan previously served as our President

and Chief Executive Officer from May 2017 until June 2023 and our Chief Operating Officer, principal financial officer and principal accounting officer from
January 2016 to May 2017. From June 2011 through December 2015, Mr. Hagan served as the Executive Vice President, Chief Financial Officer and Chief
Business Officer of Orexigen Therapeutics, Inc. (“Orexigen”). From May 2009 to June 2011, Mr. Hagan served as Orexigen’s Senior Vice President, Corporate
Development, Strategy and Communications. From September 1998 to April 2008, Mr. Hagan served as Managing Director of Amgen Ventures. Prior to
starting the Amgen Ventures Fund, Mr. Hagan served as Head of corporate development for Amgen Inc. (“Amgen”). Before joining Amgen, Mr. Hagan spent
five years in the bioengineering labs at Genzyme and Advanced Tissue Sciences. Mr. Hagan served on the board of directors of Aurinia Pharmaceuticals, Inc.
from February 2018 to June 2023, and he also previously served on the board of directors of Zosano Pharma Corp., from May 2015 to May 2022. He received
an M.B.A. from Northeastern University and a B.S. in Physiology and Neuroscience from the University of California, San Diego.

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Alice S. Huang, Ph.D. has served on our Board of Directors since January 2021. Dr. Huang is currently Senior Faculty Associate of Biology and

Biological Engineering at the California Institute of Technology ("Caltech"), having joined Caltech in July 1997. Previous to her tenure at Caltech she was Dean
for Science and Professor of Biology at New York University, Professor of Microbiology and Molecular Genetics at Harvard Medical School and Director,
Laboratories of Infectious Disease at Boston Children’s Hospital. She also served as director of Virus-Host Interactions in Cancer for 15 years, a training
program at Harvard funded by the National Cancer Institute. Dr. Huang has served on the Board of Trustees of the Keck Graduate Institute since 1998 and has
previously served on the Board of Trustees of Waksman Foundation for Microbiology, the Rockefeller Foundation, Public Agenda, Johns Hopkins University,
the Health Effects Institute, and the University of Massachusetts. Dr. Huang is serving on the advisory boards of the Institute for Basic Biomedical Sciences at
Johns Hopkins University School of Medicine since 2008 as well as the Schlesinger Library at Radcliffe Institute since 2018. She has previously served on the
advisory boards of the National Foundation for Infectious Diseases, the US Army Medical Research and Development Command and Food and Drug
Administration. She has been a fellow of the American Association of Women in Science since 1978, American Academy of Microbiology since 1982,
Academia Sinica in Taiwan since July 1990, and the American Association for the Advancement of Science since 2000, serving as its president from 2010 to
2011. Dr. Huang received her B.A., M.A. and Ph.D. degrees from the Johns Hopkins University.

Preston S. Klassen, M.D. has served as our President and Head of Research and Development and as a member of our Board of Directors since June
2023. Dr. Klassen previously served as President and Chief Operating Officer of Zura Bio Limited from February to April 2023. From June 2020 to February
2023, Dr. Klassen served as President and Chief Executive Officer and as a member of the Board of Directors of Metacrine, Inc., a biopharmaceutical company.
From March 2017 to June 2020, Dr. Klassen served as Executive Vice President, Head of Research and Development and Chief Medical Officer of Arena
Pharmaceuticals, Inc., a biopharmaceutical company. From June 2016 to March 2017, he was Chief Medical Officer of Laboratoris Sanifit S.L., a biotechnology
company, and prior to that, from November 2009 to May 2016, was Executive Vice President, Head of Global Development at Orexigen Therapeutics, Inc. Dr.
Klassen also held several positions of increasing responsibility at Amgen Inc., including Therapeutic Area Head for Nephrology. Before joining Amgen, he was
a faculty member in the Division of Nephrology at Duke University Medical Center. From February 2014 to May 2020, Dr. Klassen served on the board of
directors of Conatus Pharmaceuticals Inc., a publicly traded biotechnology company that merged with Histogen Inc. in May 2020. Dr. Klassen holds a B.S. in
Chemistry from Central University of Iowa. Dr. Klassen received his medical degree from the University of Nebraska College of Medicine and completed his
residency in internal medicine, fellowship in nephrology, and Master of Health Sciences degree at Duke University.

Jake R. Nunn has served on our Board of Directors since June 2019. Since January 2023, Mr. Nunn has served as a Venture Partner with SR One Capital
Management, a venture capital firm. Previously, Mr. Nunn was a venture advisor at New Enterprise Associates, Inc. (“NEA”), a venture capital firm, where he
was a partner from June 2006 until January 2019. Prior to joining NEA, he served as a partner and an analyst for the MPM BioEquities Fund, a life sciences
fund at MPM Capital, L.P., a private equity firm. Previously, he was a healthcare research analyst and portfolio manager at Franklin Templeton Investments and
an investment banker with Alex Brown & Sons. Mr. Nunn has served on the board of directors of Trevena, Inc., a publicly-held biotechnology company focused
on the central nervous system since July 2013, Addex Therapeutics Ltd., a publicly-held biopharmaceutical company focused on allosteric modulators for
neurological disorders since June 2018. Mr. Nunn served on the board of directors of Oventus Medical Ltd., a publicly-held medical device company from
February 2020 until September 2023 and Hexima Limited, a publicly-held biopharmaceutical company focused on novel anti-fungals from September 2021
until June 2022. Mr. Nunn also served on the board of directors of Dermira, Inc., a publicly-held biopharmaceutical company focused on dermatology, from
May 2011 until its acquisition by Eli Lilly and Company in February 2020. From 2009 to May 2015, Mr. Nunn served on the board of directors of Hyperion
Therapeutics, Inc. and from 2008 to February 2016, Mr. Nunn served on the board of directors of TriVascular Technologies, Inc. Mr. Nunn received his A.B. in
economics from Dartmouth College and his M.B.A. from the Stanford Graduate School of Business. He also holds the Chartered Financial Analyst designation
and is a member of the CFA Society of San Francisco.

William H. Rastetter, Ph.D. has served on our Board of Directors since April 2013. From 2006 to February

2013, Dr. Rastetter served as a partner in the venture capital firm, Venrock. He served as Chief Executive Officer of IDEC Pharmaceuticals Corp. (“IDEC
Pharmaceuticals”) from December 1986 through November 2003, and as Chair from May 1996 to November 2003. Upon the merger of IDEC Pharmaceuticals
and Biogen Inc. in November 2003, Dr. Rastetter served as Executive Chair of Biogen Idec until the end of 2005. Dr. Rastetter served as Chair of the board of
Illumina, Inc., a publicly held biotechnology company, from 2005 to January 2016 and served on its board of directors from 1998 to January 2016. He was a
founder of Receptos, Inc. in 2009 and served as its Chair until the sale of the publicly held company to Celgene Corporation in 2015. Currently, he has served as
the Chair of the board of directors of Fate Therapeutics, Inc., a publicly held biotechnology company, since November 2011; Chair of the board of directors of
Neurocrine Biosciences, Inc., a publicly held biotechnology company, since May 2011 and on its board of directors since February 2010; on the board of
directors of Grail, Inc., a privately-held company, since January 2016, and as its Chair from August 2017 to November 2018. Dr. Rastetter served on the board
of directors of Cerulean Pharma Inc. (“Cerulean”), a publicly held biotechnology company since January 2014, as its lead independent director from April 2014
to June 2016, and as its Chair from June 2016 until July 2017 when Cerulean and Daré Bioscience Inc. completed a reverse merger and he currently serves as
Chair of the board of the surviving company, Daré Bioscience Inc., a publicly- traded company. In addition, he serves as an advisor to Illumina Ventures. He is
the author of numerous scientific papers and patent applications in the fields of organic and bioorganic chemistry, protein and enzyme engineering, and
biotechnology. Dr. Rastetter holds an S.B. in Chemistry from the Massachusetts Institute of Technology and received his M.A. and Ph.D. in Chemistry from
Harvard University.

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Hugh Rosen, M.D., Ph.D. has served on our Board of Directors since June 2016. Since 2002, Dr. Rosen has served as a professor at the Scripps Research
Institute of La Jolla (“TSRI”) and, since August 2023, serves as Chair of Molecular and Cellular Biology. From April 2017 until March 2023, Dr. Rosen served
as the President and Chair of the Board of ActivX Biosciences, Inc., a wholly owned biopharmaceutical subsidiary of Kyorin Pharmaceutical Co., Ltd. Prior to
joining TSRI, Dr. Rosen served in various capacities with Merck Research Laboratories most recently serving as Executive Director in Immunology,
Rheumatology and Infectious Diseases and Chair of the Worldwide Business Strategy Team for Antibacterials and Antifungals, reporting to the Management
Committee. Dr. Rosen was a scientific founder of Receptos, Inc., now a wholly owned biopharmaceutical subsidiary of Celgene Corporation, and of
BlackThorn Therapeutics, now Neumora Therapeutics, Inc., a publicly held biopharmaceutical company. He received his M.D. from the University of Cape
Town, South Africa and his Ph.D. in Physiological Sciences from Oxford.

Pascale Witz, MBA, MSc has served on our Board of Directors since June 2017. Ms. Witz is the founder and since November 2016, the president of PWH
Advisors, a consultancy firm advising management at life science companies and investment firms. From September 2015 through May 2016, Ms. Witz served
as the Executive Vice President, Diabetes & Cardiovascular for Sanofi, S.A. (“Sanofi”). Prior to that position, Ms. Witz served as the Executive Vice President,
Global Divisions and Strategic Development, commencing in July 2013. During her tenure at Sanofi, she launched multiple medicines across three continents,
and strengthened the pipeline through licensing and partnerships. From 2009 to 2013, Ms. Witz served as President and CEO of General Electric’s (“GE”)
Pharmaceutical Diagnostics, an integrated Pharmaceutical organization. Ms. Witz joined GE Healthcare in 1996, where she held various positions of increasing
responsibilities and lead global businesses based out of the USA, France and the UK. She formerly worked for Becton Dickinson Pharmaceutical Systems from
1991 to 1996. Ms. Witz has served on the board of Fresenius Medical Care AG & Co. KGaA, since May 2016 and Revvity, Inc. (formerly PerkinElmer, Inc.),
since October 2017. Ms. Witz also served on the board of Horizon Pharma, from August 2017 until its acquisition by Amgen, Inc. in October 2023, TESARO,
Inc., from May 2018 until its acquisition by GlaxoSmithKline plc in January 2019 and from May 2016 to April 2018, served on the board of Savencia SA. Ms.
Witz received her MBA from INSEAD, Fountainbleu, France and her M.S. in Biochemistry from the Institut National des Sciences Appliquées (INSA), Lyon,
France. She was also a Ph.D. student in Molecular Biology at the Centre National de la Recherche Scientifique, Strasbourg, France.

Item 11.        Executive Compensation

The information required by this item will be set forth in the sections headed “Executive Compensation” and "Director Compensation" in our Proxy

Statement and is incorporated herein by reference.

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

The information required by this item will be set forth under the heading “Security Ownership of Certain Beneficial Owners and Management" in our Proxy
Statement and is incorporated herein by reference.

The information required by Item 201(d) of Regulation S-K will be set forth in the section headed “Equity Compensation Plan Information” in our Proxy

Statement and is incorporated herein by reference.

Item 13.        Certain Relationships and Related Transactions and Director Independence

The information required by this item will be set forth in the section headed “Transactions With Related Persons” and "Independence of the Board of
Directors" in our Proxy Statement and is incorporated herein by reference.

Item 14.        Principal Accounting Fees and Services

The information required by this item will be set forth in the section headed “Ratification of Selection of Independent Registered Public Accounting Firm”

in our Proxy Statement and is incorporated herein by reference.

Item 15. Exhibits, Financial Statement Schedules

Financial Statements. We have filed the following financial statements with this Annual Report:

PART IV

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Report of Independent Registered Public Accounting Firm (PCAOB ID: 42)
Balance Sheets
Statements of Operations and Comprehensive Loss
Statements of Stockholders’ Equity
Statements of Cash Flows
Notes to Financial Statements

Page Number
58
59
61
62
63
64

Financial Statement Schedules. All schedules are omitted because they are not applicable or the required information is shown in the financial statements or
notes thereto.

Exhibits.

Exhibit Number

Description

3.1

3.2

3.3

3.4

3.5

3.6

3.7

3.8

3.9

3.10

3.11

Amended and Restated Certificate of Incorporation of the Registrant (incorporated by reference to Exhibit 3.1 to the Registrant’s Quarterly
Report on Form 10-Q (File No. 001-35670), filed with the SEC on August 3, 2016.

Certificate of Amendment of Amended and Restated Certificate of Incorporation of the Registrant (incorporated by reference to Exhibit 3.1
to the Registrant’s Current Report on Form 8-K (File No. 001-35670), filed with the SEC on October 2, 2018).

Certificate of Amendment of Amended and Restated Certificate of Incorporation of the Registrant. (incorporated by reference to Exhibit 3.1
to the Registrant’s Current Report on Form 8-K (File No. 001-35670), filed with the SEC on June 16, 2021).

Certificate of Amendment of Amended and Restated Certificate of Incorporation of the Registrant (incorporated by reference to Exhibit 3.1
to the Registrant's Current Report on Form 8-K (File No. 001-35670), filed with the SEC on June 27, 2022).

Certificate of Designation of Preferences, Rights and Limitations of Class A-1 Convertible Preferred Stock (incorporated by reference to
Exhibit 3.1 to the Registrant's Current Report on Form 8-K (File No. 001-35670), filed with the SEC on May 9, 2019).

Certificate of Designation of Preferences, Rights and Limitations of Class A-2 Convertible Preferred Stock (incorporated by reference to
Exhibit 3.1 to the Registrant's Current Report on Form 8-K (File No. 001-35670), filed with the SEC on December 26, 2019).

Certificate of Designation of Preferences, Rights and Limitations of Class A-3 Convertible Preferred Stock (incorporated by reference to
Exhibit 3.1 to the Registrants’ Current Report on Form 8-K (File No. 001-35670) filed with the SEC on December 4, 2020).

Certificate of Designation of Preferences, Rights and Limitations of Class A-4 Convertible Preferred Stock (incorporated by reference to
Exhibit 3.1 to the Registrant’s Current Report on Form 8-K (file No. 001-35670), filed with the SEC on November 30, 2021).

Certificate of Amendment to the Certificate of Designation of Preferences, Rights and Limitations of Class A-1 Convertible Preferred Stock
(incorporated by reference to Exhibit 3.2 to the Registrant's Current Report on Form 8-K (File No. 001-35670), filed with the SEC on
December 4, 2020).

Certificate of Amendment to the Certificate of Designation of Preferences, Rights and Limitations of Class A-2 Convertible Preferred Stock
(incorporated by reference to Exhibit 3.3 to the Registrant's Current Report on Form 8-K (File No. 001-35670), filed with the SEC on
December 4, 2020).

Certificate of Designation of Preferences, Rights and Limitations of Class A-5 Convertible Preferred Stock (incorporated by reference to
Exhibit 3.1 to the Registrant’s Current Report on Form 8-K (file No. 001-35670), filed with the SEC on April 13, 2023).

83

Table of Contents

3.12

3.13

3.14

4.1

4.2

4.3

4.4

4.5

10.1*

10.2*

10.3*

10.4*

10.5*

10.6*

10.7*

10.8*

10.9*

Certificate of Decrease of Class A-1 Convertible Preferred Stock, Class A-2 Convertible Preferred Stock and Class A-3 Convertible
Preferred Stock.

Certificate of Designation of Preferences, Rights and Limitations of Class A-6 Convertible Preferred Stock (incorporated by reference to
Exhibit 3.1 to the Registrant’s Current Report on Form 8-K, filed with the SEC on March 14, 2024).

Amended and Restated Bylaws of the Registrant (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K
(File No. 001-35670), filed with the SEC on June 8, 2016).

Reference is made to Exhibits 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12, 3.13 and 3.14.

Form of Common Stock Certificate of the Registrant (incorporated by reference to Exhibit 4.2 to the Registrant's Quarterly Report on Form
10-Q (File No. 001-35670), filed with the SEC on August 11, 2022).

Description of Common Stock.

Form of Common Stock Purchase Warrant (incorporated by reference to Exhibit 4.2 to the Registrant's Current Report on Form 8-K (File
No. 001-35670), filed with the SEC on May 9, 2019).

Form of Common Stock Purchase Warrant (incorporated by reference to Exhibit 4.2 to the Registrant's Current Report on Form 8-K (File
No. 001-35670), filed with the SEC on December 4, 2020).

Form of Indemnity Agreement between the Registrant and its directors and officers (incorporated by reference to Exhibit 10.1 to the
Registrant’s Registration Statement on Form S-1, as amended (File No. 333-183384), originally filed with the SEC on August 17, 2012).

Regulus Therapeutics Inc 2012 Equity Incentive Plan and Form of Stock Option Agreement and Form of Stock Option Grant Notice
thereunder (incorporated by reference to Exhibit 10.3 to the Registrant’s Registration Statement on Form S-1, as amended (File No. 333-
183384), originally filed with the SEC on August 17, 2012).

Non-Employee Director Compensation Policy, as amended (incorporated by reference to Exhibit 10.6 to the Registrant's Quarterly Report
on Form 10-Q (File No. 001-35670), filed with the SEC on November 12, 2019).

Regulus Therapeutics Inc. 2022 Employee Stock Purchase Plan (incorporated by reference to Exhibit 10.1 to the Registrant's Quarterly
Report on Form 10-Q (File No. 001-35670), filed with the SEC on August 11, 2022).

Regulus Therapeutics Inc. 2019 Equity Incentive Plan, as amended (incorporated by reference to Exhibit 99.1 to the Registrant’s Current
Report on Form 8-K (File No. 00135670), filed with the SEC on June 14, 2023).

Form of Stock Option Grant Notice and Option Agreement under the Regulus Therapeutics Inc. 2019 Equity Incentive Plan (incorporated
by reference to Exhibit 99.2 to the Registrant’s Registration Statement on Form S-8 (Registration No. 333-233414, filed with the SEC on
August 22, 2019).

Form of Restricted Stock Unit Grant Notice and Restricted Stock Unit Agreement under the Regulus Therapeutics Inc. 2019 Equity
Incentive Plan (incorporated by reference to Exhibit 99.3 to the Registrant’s Registration Statement on Form S-8 (Registration No. 333-
233414, filed with the SEC on August 22, 2019).

Regulus Therapeutics Inc. 2021 Inducement Plan, as amended (incorporated by reference to Exhibit 99.5 to the Registrant’s Registration
Statement on Form S-8 (File No. 333-276484, filed with the SEC on January 12, 2024).

Form of Stock Option Grant Notice, Form of Option Agreement and Notice of Exercise under the Regulus Therapeutics Inc. 2021
Inducement Plan (incorporated by reference to Exhibit 99.6 to the Registrant’s Registration Statement on Form S-8 (File No. 333-269184),
filed with the SEC on January 11, 2023).

84

 
Table of Contents

10.10*

10.11*

10.12*

10.13*

10.14*

10.15*

10.16*

10.17*

10.18†

10.19†

10.20†

10.21†

10.22

10.23

10.24

10.25††

10.26†

Employment Agreement, effective January 1, 2016, by and between the Registrant and Joseph P. Hagan (incorporated by reference to
Exhibit 10.10 to the Registrant’s Annual Report on Form 10-K (File No. 001-35670), filed with the SEC on February 23, 2016).

Employment Agreement between the Registrant and Christopher Aker, dated July 24, 2018 (incorporated by reference to Exhibit 10.1 to the
Registrant’s Quarterly Report on Form 10-Q (File No. 001-35670), filed with the SEC on May 10, 2019).

Employment Agreement between the Registrant and Cris Calsada, dated August 30, 2019 (incorporated by reference to Exhibit 10.7 to the
Registrant’s Quarterly Report on Form 10-Q (File No. 001-35670), filed with the SEC on November 12, 2019).

Employment Agreement, by and between the Registrant and Preston Klassen, M.D., dated June 12, 2023 (incorporated by reference to
Exhibit 10.2 to the Registrant’s Quarterly Report on Form 10-Q (File No. 001-35670), filed with the SEC on August 8, 2023.

Joseph P. Hagan, Yearly Discretionary Base Salary Increase, effective January 1, 2024.

Christopher Aker, Yearly Discretionary Base Salary Increase, effective January 1, 2024.

Cris Calsada, Yearly Discretionary Base Salary Increase, effective January 1, 2024.

Preston Klassen, Yearly Discretionary Base Salary Increase, effective January 1, 2024.

Amended and Restated License and Collaboration Agreement among the Registrant, Alnylam Pharmaceuticals, Inc. and Ionis
Pharmaceuticals, Inc. (formerly known as Isis Pharmaceuticals, Inc.), dated January 1, 2009 (incorporated by reference to Exhibit 10.3 to
the Registrant’s Registration Quarterly Report on Form 10-Q (File No. 001-35670), filed with the SEC on May 14, 2021).

Amendment Number One to the Amended and Restated License and Collaboration Agreement among the Registrant, Alnylam
Pharmaceuticals, Inc. and Ionis Pharmaceuticals, Inc. (formerly known as Isis Pharmaceuticals, Inc.), dated June 10, 2010 (incorporated by
reference to Exhibit 10.4 to the Registrant’s Registration Quarterly Report on Form 10-Q (File No. 001-35670), filed with the SEC on May
14, 2021).

Amendment Number Two to the Amended and Restated License and Collaboration Agreement among the Registrant, Alnylam
Pharmaceuticals, Inc. and Ionis Pharmaceuticals, Inc. (formerly known as Isis Pharmaceuticals, Inc.), dated October 25, 2011 (incorporated
by reference to Exhibit 10.5 to the Registrant’s Registration Quarterly Report on Form 10-Q (File No. 001-35670), filed with the SEC on
May 14, 2021).

Amendment Number Three to the Amended and Restated License and Collaboration Agreement among the Company, Alnylam
Pharmaceuticals, Inc. and Isis Pharmaceuticals, Inc., dated August 2, 2013 (incorporated by reference to Exhibit 10.6 to the Registrant’s
Registration Quarterly Report on Form 10-Q (File No. 001-35670), filed with the SEC on May 14, 2021).

Assignment Agreement between the Registrant and Ionis Pharmaceuticals, Inc. (formerly known as Isis Pharmaceuticals, Inc.), dated July
13, 2009 (incorporated by reference to Exhibit 10.26 to the Registrant’s Registration Statement on Form S-1, as amended (File No. 333-
183384), originally filed with the SEC on August 17, 2012).

Loan and Security Agreement, dated June 17, 2016, by and between the Registrant and Oxford Finance LLC (incorporated by reference to
Exhibit 10.1 to the Registrant’s Quarterly Report on Form 10-Q (File No. 001-35670), filed with the SEC on August 3, 2016).

First Amendment to Loan and Security Agreement, dated October 4, 2017, by and between the Registrant and Oxford Finance LLC.
(incorporated by reference to Exhibit 10.31 to the Registrant’s Annual Report on Form 10-K (File No. 001-35670), filed with the SEC on
March 8, 2018).

Second Amendment to Loan and Security Agreement, dated March 6, 2018, by and between the Registrant and Oxford Finance LLC
(incorporated by reference to Exhibit 10.30 to the Registrant’s Annual Report on Form 10-K (File No. 001-35670), filed with the SEC on
March 9, 2021).

Third Amendment to Loan and Security Agreement, dated August 6, 2018, by and between the Registrant and Oxford Finance LLC
(incorporated by reference to Exhibit 10.1 to the Registrant’s Quarterly Report on Form 10-Q (File No. 001-35670), filed with the SEC on
November 9, 2018).

85

Table of Contents

10.27

10.28

10.29

10.30

10.31

10.32

10.33

10.34

10.35

10.36

10.37

Ω
10.38

23.1

24.1

31.1

31.2

32.1**

97

Fourth Amendment to Loan and Security Agreement, dated November 5, 2018, by and between the Registrant and Oxford Finance LLC
(incorporated by reference to Exhibit 10.37 to the Registrant’s Annual Report on Form 10-K (File No. 001-35670), filed with the SEC on
March 18, 2019).

Fifth Amendment to Loan and Security Agreement, dated January 31, 2019, by and between the Registrant and Oxford Finance LLC
(incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K (File No. 001-35670), filed with the SEC on
February 1, 2019).

Sixth Amendment to Loan and Security Agreement, dated March 7, 2019, by and between the Registrant and Oxford Finance LLC
(incorporated by reference to Exhibit 10.44 to the Registrant’s Annual Report on Form 10-K (File No. 001-35670), filed with the SEC on
March 18, 2019).

Seventh Amendment to Loan and Security Agreement, dated April 9, 2019, by and between the Registrant and Oxford Finance LLC
(incorporated by reference to Exhibit 10.7 to the Registrant’s Quarterly Report on Form 10-Q (File No. 001-35670), filed with the SEC on
May 10, 2019).

Eighth Amendment to Loan and Security Agreement, dated May 3, 2019, by and between the Registrant and Oxford Finance LLC
(incorporated by reference to Exhibit 10.2 to the Registrant’s Current Report on Form 8-K (File No. 001-35670), filed with the SEC on May
9, 2019).

Ninth Amendment to Loan and Security Agreement, dated May 1, 2020, by and among the Registrant and Oxford Finance, LLC
(incorporated by reference to Exhibit 10.1 to the Registrant’s Quarterly Report on Form 10-Q (File No. 001-35670), filed with the SEC on
May 14, 2020).

Tenth Amendment to Loan and Security Agreement, dated August 25, 2020, by and among the Registrant and Oxford Finance, LLC.
(incorporated by reference to Exhibit 10.34 to the Registrant’s Annual Report on Form 10-K (File No. 001-35670), filed with the SEC on
March 23, 2023).

Eleventh Amendment to Loan and Security Agreement, dated December 31, 2021, by and between the Company and Oxford Finance LLC
(incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K (File No. 001-35670), filed with the SEC on
January 5, 2022).

Amendment to Loan and Security Agreement, dated June 19, 2023, by and between the Company and Oxford Finance LLC (incorporated
by reference to Exhibit 10.4 to the Registrant’s Quarterly Report on Form 10-Q (File No. 001-35670), filed with the SEC on August 8,
2023).

Lease Agreement, dated February 11, 2021, by and between the Registrant and ARE-SD Region No. 44 LLC (incorporated by reference to
Exhibit 10.44 to the Registrant’s Annual Report on Form 10-K (File No. 001-35670), filed with the SEC on March 9, 2021).

Assignment and Assumption of Lease, dated February 11, 2021, by and between the Registrant and Turning Point Therapeutics, Inc.
(incorporated by reference to Exhibit 10.45 to the Registrant’s Annual Report on Form 10-K (File No. 001-35670), filed with the SEC on
March 9, 2021)

Securities Purchase Agreement, dated March 11, 2024, by and among the Company and the Purchasers thereto (incorporated by reference
to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K, filed with the SEC on March 14, 2024).

Consent of Independent Registered Public Accounting Firm.

Power of Attorney. Reference is made to the signature page hereto.

Certification of the Principal Executive Officer pursuant to Rule 13a-14(a) or 15d-14(a) of the Securities Exchange Act of 1934.

Certification of the Principal Financial Officer pursuant to Rule 13a-14(a) or 15d-14(a) of the Securities Exchange Act of 1934.

Certification of the Principal Executive Officer and Principal Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002.

Incentive Compensation Recoupment Policy.

86

Table of Contents

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 Label Linkbase Document.

101.PRE

Inline XBRL Taxonomy Extension Presentation Linkbase Document.

104

Cover Page Interactive Data File (formatted as inline XBRL with applicable taxonomy extension information contained in Exhibit 101.
INS)

† We have received confidential treatment for certain portions of this agreement, which have been omitted and filed separately with the SEC pursuant to Rule
406 under the Securities Act of 1933, as amended, or Rule 24b-2 of the Securities Exchange Act of 1934, as amended.

†† Certain portions of this exhibit (indicated by “[***]”) have been omitted pursuant to Item 601(b)(10(iv) of Regulation S-K.

Ω 

Schedules and exhibits have been omitted pursuant to Item 601(a)(5) of Regulation S-K.

* Indicates management contract or compensatory plan.

** This  certification  is  being  furnished  solely  to  accompany  this  annual  report  pursuant  to  18  U.S.C.  Section  1350,  and  is  not  being  filed  for  purposes  of
Section 18 of the Securities Exchange Act of 1934 and is not to be incorporated by reference into any filing of the Registrant, whether made before or after the
date hereof, regardless of any general incorporation language in such filing.

Item 16.        Form 10-K Summary

None.

Pursuant to the requirements 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 21, 2024

Regulus Therapeutics Inc.
By:

/s/ Joseph P. Hagan
Joseph P. Hagan
Chief Executive Officer
(Principal Executive Officer)

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Joseph P. Hagan and Cris
Calsada as his or her true and lawful attorneys-in-fact, and each of them, with full power of substitution, for him or her in any and all capacities, to sign any
amendments to this Annual Report on Form 10-K and to file the same, with exhibits thereto and other documents in connection therewith, with the Securities
and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act
and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or

87

 
 
 
 
 
 
 
Table of Contents

could do in person, hereby ratifying and confirming all that said attorneys-in-fact, and either of them, or his or her or their substitute or substitutes may do or
cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, this Annual Report on Form 10-K has been signed below by the following persons

on behalf of the registrant and in the capacities and on the dates indicated.

Signature

Title

/s/ Joseph P. Hagan
Joseph P. Hagan

/s/ Cris Calsada
Cris Calsada

/s/ Daniel J. Penksa
Daniel J. Penksa

/s/ Stelios Papadopoulos
Stelios Papadopoulos, Ph.D.

/s/ David Baltimore
David Baltimore, Ph.D.

/s/ Kathryn Collier
Kathryn Collier

/s/ Alice Huang
Alice Huang, Ph.D.

/s/ Preston Klassen
Preston Klassen, M.D.

/s/ Jake R. Nunn
Jake R. Nunn

/s/ William H. Rastetter
William H. Rastetter, Ph.D.

/s/ Hugh Rosen
Hugh Rosen, M.D., Ph.D.

/s/ Pascale Witz
Pascale Witz

Chief Executive Officer and Director
(Principal Executive Officer)

Chief Financial Officer
(Principal Financial Officer)

Vice President, Finance & Controller
(Principal Accounting Officer)

Date

March 21, 2024

March 21, 2024

March 21, 2024

Chairman of the Board of Directors

March 21, 2024

Director

Director

Director

Director

Director

Director

Director

Director

88

March 21, 2024

March 21, 2024

March 21, 2024

March 21, 2024

March 21, 2024

March 21, 2024

March 21, 2024

March 21, 2024

 
 
Exhibit 3.12

CERTIFICATE OF DECREASE OF THE NUMBER OF SHARES
OF CLASS A-1 CONVERTIBLE PREFERRED STOCK, CLASS A-2 CONVERTIBLE PREFERRED STOCK AND CLASS
A-3 CONVERTIBLE PREFERRED STOCK OF REGULUS THERAPEUTICS INC.

(Pursuant to Section 151(g) of the
General Corporation Law of the State of Delaware)

The  Certificate  of  Incorporation,  as  amended  to  date,  of  Regulus  Therapeutics  Inc.,  a  Delaware  corporation  (the
“Corporation”), authorizes 310,000,000 shares of capital stock, which consists of 300,000,000 shares of Common Stock, par value
$0.001 per share, and 10,000,000 shares of Preferred Stock, par value $0.001 per share.

Of the authorized Preferred Stock: (i) 2,499,319 shares were previously designated as Class A-1 Convertible Preferred
Stock,  (ii)  3,288,390  shares  were  previously  designated  as  Class  A-2  Convertible  Preferred  Stock,  (iii)  272,970  shares  were
previously  designated  as  Class  A-3  Convertible  Preferred  Stock,  (iv)  3,725,720  shares  were  previously  designated  as  Class  A-4
Convertible Preferred Stock, and (v) 140,827 shares were previously designated as Class A-5 Convertible Preferred (collectively, the
“Class A Preferred Stock”).

Pursuant  to  the  Certificates  of  Designation  of  Preferences,  Rights  and  Limitations  of  each  of  the  Class  A  Preferred
Stock, upon the conversion of any such Class A Preferred Stock, such shares shall resume the status of authorized but unissued shares
of Preferred Stock and shall no longer be designated as such Class A Preferred Stock.

The  Corporation,  pursuant  to  authority  conferred  on  the  Board  of  Directors  of  the  Corporation  by  its  Certificate  of
Incorporation  and  in  accordance  with  the  provisions  of  Section  151  of  the  General  Corporation  Law  of  the  State  of  Delaware,
certifies  that  the  Board  of  Directors  of  the  Corporation,  at  a  meeting  thereof  duly  called  and  held  on  March  4,  2024,  at  which  a
quorum was present and acting throughout, duly adopted the following resolution:

“RESOLVED: That pursuant to the authority expressly granted and vested in the Board of Directors of
the Corporation in accordance with the provisions of its Certificate of Incorporation:

•

•

the number of shares of Preferred Stock of the Corporation designated as Class A-1 Preferred Stock
is  reduced  from  2,499,319  shares  to  256,700  shares  in  accordance  with  Section  8(g)  of  the
Certificate of Designation of Preferences, Rights and Limitations of Class A-1 Preferred Stock;

the number of shares of Preferred Stock of the Corporation designated as Class A-2 Preferred Stock
is  reduced  from  3,288,390  shares  to  1,330,832  shares  in  accordance  with  Section  8(g)  of  the
Certificate of Designation of Preferences, Rights and Limitations of Class A-2 Preferred Stock; and

 
 
•

the number of shares of Preferred Stock of the Corporation designated as Class A-3 Preferred Stock
is reduced from 272,970 shares to 258,707 shares in accordance with Section 8(g) of the Certificate
of Designation of Preferences, Rights and Limitations of Class A-3 Preferred Stock;

with the result that the Corporation shall have 4,287,214 shares of Preferred Stock, $0.001 par value
per share, that are authorized but unissued and which are set aside for designation from time to time by
the Board of Directors of the Corporation in accordance with the provisions of the General Corporation
Law  of  the  State  of  Delaware,  that  the  officers  of  the  Corporation  are  authorized  and  directed  in  the
name and on behalf of the Corporation to execute and file a Certificate of Decrease with the Secretary
of State of the State of Delaware and to take any and all other actions deemed necessary or appropriate
to effectuate this resolution.”

    2

 
 
IN  WITNESS  WHEREOF,  Regulus  Therapeutics  Inc.  has  caused  this  Certificate  of  Decrease  to  be  executed  by  its  duly

authorized officer this 14th day of March, 2024.

By: _/s/ Chris Aker_________________________
Name: Chris Aker
Title: SVP, General Counsel and Secretary

    3

 
 
Joseph P. Hagan Yearly Discretionary Base Salary Increase

Exhibit 10.14

The Board of Directors (the “Board”) of Regulus Therapeutics Inc., upon the recommendation of the Compensation Committee of the Board, approved the
increase of Mr. Hagan’s annual base salary to $640,400, effective January 1, 2024.

 
 
The Board of Directors (the “Board”) of Regulus Therapeutics Inc., upon the recommendation of the Compensation Committee of the Board, approved the
increase of Mr. Aker’s annual base salary to $425,000, effective January 1, 2024.

Christopher R. Aker Yearly Discretionary Base Salary Increase

Exhibit 10.15

 
 
Cris Calsada Yearly Discretionary Base Salary Increase

Exhibit 10.16

The Board of Directors (the “Board”) of Regulus Therapeutics Inc., upon the recommendation of the Compensation Committee of the Board, approved the
increase of Ms. Calsada’s annual base salary to $425,000, effective January 1, 2024.

 
 
Preston Klassen Yearly Discretionary Base Salary Increase

Exhibit 10.17

The Board of Directors (the “Board”) of Regulus Therapeutics Inc., upon the recommendation of the Compensation Committee of the Board, approved the
increase of Mr. Klassen’s annual base salary to $494,000, effective January 1, 2024.

 
 
Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the following Registration Statements:

(1) Registration Statement (Form S-1 No. 333-261469) of Regulus Therapeutics Inc.,

(2) Registration Statement (Form S-3 Nos. 333-231965, 333-236026, 333-251853, 333-271847 and 333-276287) of Regulus Therapeutics Inc.,

(3) Registration Statement (Form S-8 Nos. 333-233414, 333-236020 and 333-273027) pertaining to the 2019 Equity Incentive Plan of Regulus Therapeutics
Inc.,

(4) Registration Statement (Form S-8 No. 333-184324) pertaining to the 2009 Equity Incentive Plan, 2012 Equity Incentive Plan and 2012 Employee Stock
Purchase Plan of Regulus Therapeutics Inc.,

(5) Registration Statement (Form S-8 No. 333-206511) pertaining to the Regulus Therapeutics Inc. Inducement Plan,

(6) Registration Statement (Form S-8 Nos. 333-188606, 333-194294, 333-201988, 333-209654, 333-215793, 333-222434 and 333-229514) pertaining to the
2012 Equity Incentive Plan and 2012 Employee Stock Purchase Plan of Regulus Therapeutics Inc.,

(7) Registration Statement (Form S-8 Nos. 333-252733 and 333-262112) pertaining to the 2019 Equity Incentive Plan and the 2012 Employee Stock Purchase
Plan of Regulus Therapeutics Inc.,

(8) Registration Statement (Form S-8 No. 333-261402) pertaining to the Regulus Therapeutics Inc. 2021 Inducement Plan,

(9) Registration Statement (Form S-8 No. 333-266800) pertaining to the 2022 Employee Stock Purchase Plan of Regulus Therapeutics Inc., and

(10) Registration Statement (Form S-8 No. 333-269184) pertaining to the 2019 Equity Incentive Plan, 2022 Employee Stock Purchase Plan, and 2021
Inducement Plan of Regulus Therapeutics Inc.;

of our report dated March 21, 2024, with respect to the financial statements of Regulus Therapeutics Inc. included in this Annual Report (Form 10-K) of
Regulus Therapeutics Inc. for the year ended December 31, 2023.

/s/ Ernst & Young LLP

San Diego, California
March 21, 2024

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER
PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.1

I, Joseph P. Hagan., certify that:

    1. I have reviewed this Annual Report on Form 10-K of Regulus Therapeutics 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 13(a)-15(f) and 15(d)-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 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 21, 2024

/s/ Joseph P. Hagan

  Joseph P. Hagan
  Chief Executive Officer
  (Principal Executive Officer)

 
 
 
CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER
PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.2

I, Cris Calsada, certify that:

    1. I have reviewed this Annual Report on Form 10-K of Regulus Therapeutics 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 13(a)-15(f) and 15(d)-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 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 21, 2024

/s/ Cris Calsada

  Cris Calsada
  Chief Financial Officer
  (Principal Financial 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 of Regulus Therapeutics Inc. (the “Company”) on Form 10-K for the year ended December 31, 2023 as filed with the
Securities and Exchange Commission on the date hereof (the “Report”), I, Joseph P. Hagan, Chief Executive Officer, and I, Cris Calsada, Chief Financial
Officer, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

        (1) The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, 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 21, 2024

Date: March 21, 2024

/s/ Joseph P. Hagan

  Joseph P. Hagan
  Chief Executive Officer
  (Principal Executive Officer)

/s/ Cris Calsada

  Cris Calsada
  Chief Financial Officer
  (Principal Financial Officer)

The foregoing certification is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Report or as a separate disclosure
document and is not to be incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended, or the Securities Exchange
Act of 1934, as amended (whether made before or after the date of the Report), irrespective of any general incorporation language contained in such filing.

 
 
 
 
 
Exhibit 97

REGULUS THERAPEUTICS INC.
Incentive Compensation Recoupment Policy

1.

Introduction

The  Board  of  Directors  (the  “Board”)  and  the  Compensation  Committee  of  the  Board  (the  “Compensation  Committee”)  of  Regulus
Therapeutics Inc., a Delaware corporation (the “Company”), have determined that it is in the best interests of the Company and its stockholders
to  adopt  this  Incentive  Compensation  Recoupment  Policy  (this  “Policy”)  providing  for  the  Company’s  recoupment  of  Recoverable  Incentive
Compensation that is received by Covered Officers of the Company under certain circumstances. Certain capitalized terms used in this Policy
have the meanings given to such terms in Section 3 below.

This Policy is designed to comply with, and shall be interpreted to be consistent with, Section 10D of the Exchange Act, Rule 10D-1

promulgated thereunder (“Rule 10D-1”) and Nasdaq Listing Rule 5608 (the “Listing Standards”).

2.

Effective Date

This Policy shall apply to all Incentive Compensation that is received by a Covered Officer on or after October 2, 2023 (the “Effective
Date”). Incentive Compensation is deemed “received” in the Company’s fiscal period in which the Financial Reporting Measure specified in the
Incentive Compensation award is attained, even if the payment or grant of such Incentive Compensation occurs after the end of that period.

3.

Definitions

“Accounting Restatement” means an accounting restatement that the Company is required to prepare 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  in  previously  issued  financial  statements  that  is  material  to  the  previously  issued  financial  statements,  or  that  would  result  in  a  material
misstatement if the error were corrected in the current period or left uncorrected in the current period.

“Accounting Restatement Date” means the earlier to occur of (a) the date that the Board, a committee of the Board authorized to take
such action, or the 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, or (b) the date that a court, regulator or other legally
authorized body directs the Company to prepare an Accounting Restatement.

“Administrator” means the Compensation Committee or, in the absence of such committee, the Board.

“Code” means the U.S. Internal Revenue Code of 1986, as amended, and the regulations promulgated thereunder.

“Covered Officer” means each current and former Executive Officer.

“Exchange” means the Nasdaq Stock Market.

“Exchange Act” means the U.S. Securities Exchange Act of 1934, as amended.

 
“Executive  Officer”  means  the  Company’s  president,  principal  financial  officer,  principal  accounting  officer  (or  if  there  is  no  such
accounting officer, the controller), any vice-president of the Company in charge of a principal business unit, division, or function (such as sales,
administration, or finance), any other officer who performs a policy-making function, or any other person who performs similar policy-making
functions for the Company. Executive officers of the Company’s parent(s) or subsidiaries are deemed executive officers of the Company if they
perform such policy-making functions for the Company. Policy-making function is not intended to include policy-making functions that are not
significant. Identification of an executive officer for purposes of this Policy would include at a minimum executive officers identified pursuant to
Item 401(b) of Regulation S-K promulgated under the Exchange Act.

“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 derived wholly or in part from such measures, including Company stock price
and total stockholder return (“TSR”). A measure need not be presented in the Company’s financial statements or included in a filing with the SEC
in order to be a Financial Reporting Measure.

“Incentive Compensation” means any compensation that is granted, earned or vested based wholly or in part upon the attainment of a

Financial Reporting Measure.

“Lookback  Period”  means  the  three  completed  fiscal  years  immediately  preceding  the  Accounting  Restatement  Date,  as  well  as  any
transition  period  (resulting  from  a  change  in  the  Company’s  fiscal  year)  within  or  immediately  following  those  three  completed  fiscal  years
(except  that  a  transition  period  of  at  least  nine  months  shall  count  as  a  completed  fiscal  year).  Notwithstanding  the  foregoing,  the  Lookback
Period shall not include fiscal years completed prior to the Effective Date.

“Recoverable Incentive Compensation” means Incentive Compensation received by a Covered Officer during the Lookback Period that
exceeds  the  amount  of  Incentive  Compensation  that  would  have  been  received  had  such  amount  been  determined  based  on  the  Accounting
Restatement, computed without regard to any taxes paid (i.e., on a gross basis without regarding to tax withholdings and other deductions). For
any  compensation  plans  or  programs  that  take  into  account  Incentive  Compensation,  the  amount  of  Recoverable  Incentive  Compensation  for
purposes  of  this  Policy  shall  include,  without  limitation,  the  amount  contributed  to  any  notional  account  based  on  Recoverable  Incentive
Compensation and any earnings to date on that notional amount. For any Incentive Compensation that is based on stock price or TSR, where the
Recoverable Incentive Compensation is not subject to mathematical recalculation directly from the information in an Accounting Restatement,
the  Administrator  will  determine  the  amount  of  Recoverable  Incentive  Compensation  based  on  a  reasonable  estimate  of  the  effect  of  the
Accounting  Restatement  on  the  stock  price  or  TSR  upon  which  the  Incentive  Compensation  was  received.  The  Company  shall  maintain
documentation of the determination of that reasonable estimate and provide such documentation to the Exchange in accordance with the Listing
Standards.

“SEC” means the U.S. Securities and Exchange Commission.

4.

Recoupment

(a)

Applicability  of  Policy.  This  Policy  applies  to  Incentive  Compensation  received  by  a  Covered  Officer  (i)  after  beginning
services  as  an  Executive  Officer,  (ii)  who  served  as  an  Executive  Officer  at  any  time  during  the  performance  period  for  such  Incentive
Compensation, (iii) while the Company had a class of securities listed on a national securities exchange or a national securities association, and
(iv) during the Lookback Period.

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(b)

Recoupment  Generally.  Pursuant  to  the  provisions  of  this  Policy,  if  there  is  an  Accounting  Restatement,  the  Company  must
reasonably  promptly  recoup  the  full  amount  of  the  Recoverable  Incentive  Compensation,  unless  the  conditions  of  one  or  more  subsections  of
Section 4(c) of this Policy are met and the Compensation Committee, or, if such committee does not consist solely of independent directors, a
majority of the independent directors serving on the Board, has made a determination that recoupment would be impracticable. Recoupment is
required regardless of whether the Covered Officer engaged in any misconduct and regardless of fault, and the Company’s obligation to recoup
Recoverable Incentive Compensation is not dependent on whether or when any restated financial statements are filed.

(c)

Impracticability of Recovery. Recoupment may be determined to be impracticable if, and only if:

(i)

the  direct  expense  paid  to  a  third  party  to  assist  in  enforcing  this  Policy  would  exceed  the  amount  of  the  applicable
Recoverable  Incentive  Compensation;  provided  that,  before  concluding  that  it  would  be  impracticable  to  recover  any  amount  of
Recoverable Incentive Compensation based on expense of enforcement, the Company shall make a reasonable attempt to recover such
Recoverable Incentive Compensation, document such reasonable attempt(s) to recover, and provide that documentation to the Exchange
in accordance with the Listing Standards; or

(ii)

recoupment  of  the  applicable  Recoverable  Incentive  Compensation  would  likely  cause  an  otherwise  tax-qualified
retirement  plan,  under  which  benefits  are  broadly  available  to  employees  of  the  Company,  to  fail  to  meet  the  requirements  of  Code
Section 401(a)(13) or Code Section 411(a) and regulations thereunder.

(d)

Sources of Recoupment. To the extent permitted by applicable law, the Administrator shall, in its sole discretion, determine the
timing  and  method  for  recouping  Recoverable  Incentive  Compensation  hereunder,  provided  that  such  recoupment  is  undertaken  reasonably
promptly. The Administrator may, in its discretion, seek recoupment from a Covered Officer from any of the following sources or a combination
thereof, whether the applicable compensation was approved, awarded, granted, payable or paid to the Covered Officer prior to, on or after the
Effective Date: (i) direct repayment of Recoverable Incentive Compensation previously paid to the Covered Officer; (ii) cancelling prior cash or
equity-based awards (whether vested or unvested and whether paid or unpaid); (iii) cancelling or offsetting against any planned future cash or
equity-based  awards;  (iv)  forfeiture  of  deferred  compensation,  subject  to  compliance  with  Code  Section  409A;  and  (v)  any  other  method
authorized by applicable law or contract. Subject to compliance with any applicable law, the Administrator may effectuate recoupment under this
Policy from any amount otherwise payable to the Covered Officer, including amounts payable to such individual under any otherwise applicable
Company  plan  or  program,  e.g.,  base  salary,  bonuses  or  commissions  and  compensation  previously  deferred  by  the  Covered  Officer.  The
Administrator  need  not  utilize  the  same  method  of  recovery  for  all  Covered  Officers  or  with  respect  to  all  types  of  Recoverable  Incentive
Compensation.

(e)

No Indemnification of Covered Officers. Notwithstanding any indemnification agreement, applicable insurance policy or any
other  agreement  or  provision  of  the  Company’s  certificate  of  incorporation  or  bylaws  to  the  contrary,  no  Covered  Officer  shall  be  entitled  to
indemnification or advancement of expenses in connection with any enforcement of this Policy by the Company, including paying or reimbursing
such Covered Officer for insurance premiums to cover potential obligations to the Company under this Policy.

(f)

Indemnification of Administrator. Any members of the Administrator, and any other members of the Board who assist in the

administration of this Policy, shall not be personally liable for any

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action, determination or interpretation made with respect to this Policy and shall be indemnified by the Company to the fullest extent under
applicable law and Company policy with respect to any such action, determination or interpretation. The foregoing sentence shall not limit any
other rights to indemnification of the members of the Board under applicable law or Company policy.

(g)

No “Good Reason” for Covered Officers. Any action by the Company to recoup or any recoupment of Recoverable Incentive
Compensation under this Policy from a Covered Officer shall not be deemed (i) “good reason” for resignation or to serve as a basis for a claim of
constructive termination under any benefits or compensation arrangement applicable to such Covered Officer, or (ii) to constitute a breach of a
contract or other arrangement to which such Covered Officer is party.

5.

Administration

Except as specifically set forth herein, this Policy shall be administered by the Administrator. The Administrator shall have full and final
authority to make any and all determinations required under this Policy. Any determination by the Administrator with respect to this Policy shall
be  final,  conclusive  and  binding  on  all  interested  parties  and  need  not  be  uniform  with  respect  to  each  individual  covered  by  this  Policy.  In
carrying out the administration of this Policy, the Administrator is authorized and directed to consult with the full Board or such other committees
of the Board as may be necessary or appropriate as to matters within the scope of such other committee’s responsibility and authority. Subject to
applicable  law,  the  Administrator  may  authorize  and  empower  any  officer  or  employee  of  the  Company  to  take  any  and  all  actions  that  the
Administrator, in its sole discretion, deems necessary or appropriate to carry out the purpose and intent of this Policy (other than with respect to
any recovery under this Policy involving such officer or employee).

6.

Severability

If any provision of this Policy or the application of any such provision to a Covered Officer shall be adjudicated to be invalid, illegal or
unenforceable in any respect, such invalidity, illegality or unenforceability shall not affect any other provisions of this Policy, and the invalid,
illegal  or  unenforceable  provisions  shall  be  deemed  amended  to  the  minimum  extent  necessary  to  render  any  such  provision  or  application
enforceable.

7.

No Impairment of Other Remedies

Nothing contained in this Policy, and no recoupment or recovery as contemplated herein, shall limit any claims, damages or other legal
remedies the Company or any of its affiliates may have against a Covered Officer arising out of or resulting from any actions or omissions by the
Covered  Officer.  This  Policy  does  not  preclude  the  Company  from  taking  any  other  action  to  enforce  a  Covered  Officer’s  obligations  to  the
Company,  including,  without  limitation,  termination  of  employment  and/or  institution  of  civil  proceedings.  This  Policy  is  in  addition  to  the
requirements of Section 304 of the Sarbanes-Oxley Act of 2002 (“SOX 304”) that are applicable to the Company’s Chief Executive Officer and
Chief  Financial  Officer  and  to  any  other  compensation  recoupment  policy  and/or  similar  provisions  in  any  employment,  equity  plan,  equity
award, or other individual agreement, to which the Company is a party or which the Company has adopted or may adopt and maintain from time
to time; provided, however, that compensation recouped pursuant to this policy shall not be duplicative of compensation recouped pursuant to
SOX 304 or any such compensation recoupment policy and/or similar provisions in any such employment, equity plan, equity award, or other
individual agreement except as may be required by law.

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8.

Amendment; Termination

The Administrator may amend, terminate or replace this Policy or any portion of this Policy at any time and from time to time in its sole

discretion. The Administrator shall amend this Policy as it deems necessary to comply with applicable law or any Listing Standard.

9.

Successors

This Policy shall be binding and enforceable against all Covered Officers and, to the extent required by Rule 10D-1 and/or the applicable

Listing Standards, their beneficiaries, heirs, executors, administrators or other legal representatives.

10.    Required Filings

    The Company shall make any disclosures and filings with respect to this Policy that are required by law, including as required by the SEC.

*    *    *    *    *

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