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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

For the fiscal year ended December 31, 2023

For The Transition Period FromTo

Commission file number: 001-41608

Structure Therapeutics Inc.

(Exact name of registrant as specified in its charter)

601 Gateway Blvd., Suite 900 South San Francisco, California 94080

(Address of principal executive offices) (Zip code)

Registrant's telephone number, including area code: (650) 457-1978

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

Name Of Each Exchange

Title of Each Class Trading Symbol(s) On Which Registered

Ordinary shares, par value $0.0001 per share* Nasdaq Global Market*

* Not for trading, but only in connection with the registration of the American Depositary Shares

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 Section 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 (§232.0405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes☒ No ☐

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

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. ☐

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

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

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

The aggregate market value of the registrant’s ordinary shares held by non-affiliates of the registrant as of June 30, 2023, the last business day of the registrant’s most recently completed second fiscal quarter, was approximately $501.7 million, based on the closing price of the registrant’s ordinary shares represented by ADSs on the Nasdaq Global Market of $41.57 per ADS. In determining the market value of the voting equity held by non-affiliates, ordinary shares of the registrant beneficially owned by each director and officer and each person who owns 10% or more of the registrant’s outstanding ordinary shares have been excluded. This determination of affiliate status is not necessarily a conclusive determination for other purposes.

The number of outstanding ordinary shares of the registrant, par value $0.0001 per share, as of February 29, 2024 was 139,794,124, of which 129,882,333 ordinary shares were held in the form of ADSs.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant’s definitive proxy statement for its 2024 Annual General Meeting of Shareholders, which the registrant intends to file pursuant to Regulation 14A with the Securities and Exchange Commission not later than 120 days after the registrant’s fiscal year ended December 31, 2023, are incorporated by reference into Part III of this Annual Report on Form 10-K.

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TABLE OF CONTENTS

Page

Part I

Item 1. Business 6

Item 1A. Risk Factors 67

Item 1B. Unresolved Staff Comments 147

Item 1C. Cybersecurity 147

Item 2. Properties 148

Item 3. Legal Proceedings 148

Item 4. Mine Safety Disclosures 149

Part II

Item 6. [Reserved] 158

Item 7A. Quantitative and Qualitative Disclosures About Market Risk 170

Item 8. Financial Statements and Supplementary Data 171

Item 9A. Controls and Procedures 205

Item 9B. Other Information 207

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections 207

Part III

Item 10. Directors, Executive Officers and Corporate Governance 208

Item 11. Executive Compensation 208

Item 14. Principal Accountant Fees and Services 208

Part IV

Item 15. Exhibits, Financial Statement Schedules 209

Signatures 215

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CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K (“Annual Report”), contains forward-looking statements. All statements other than statements of historical facts contained in this Annual Report are forward-looking statements. In some cases, you can identify forward-looking statements by terms such as “may,” "can," “will,” “would,” “should,” “expect,” “plan,” “anticipate,” “could,” “intend,” “target,” “project,” “contemplate,” “believe,” “estimate,” “predict,” “potential,” or “continue” or the negative of these terms or other similar expressions, although not all forward-looking statements contain these words. All statements other than statements of historical facts contained in this Annual Report, including without limitation statements regarding:

● the impact of data collection omissions at any of our clinical sites;

● expectations regarding the size, scope and design of clinical trials;

● our manufacturing, commercialization, and marketing plans and strategies;

● our expectations regarding the approval and use of our product candidates;

● our future financial performance;

● the impact of laws and regulations; and

● the impact of geopolitical and macroeconomic factors.

The forward-looking statements in this Annual Report are only predictions and are based largely on our current expectations and projections about future events and trends that we believe may affect our financial

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condition, results of operations, business strategy, short-term and long-term business operations and objectives, and financial needs. These forward-looking statements speak only as of the date of this Annual Report and are subject to a number of known and unknown risks, uncertainties, and assumptions, including those described under Part I. Item 1A. “Risk Factors” and Part II. Item 7. “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and elsewhere in this Annual Report. Moreover, we operate in a very competitive and rapidly changing environment. New risks emerge from time to time. It is not possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. In light of these risks, uncertainties, and assumptions, the future events and trends discussed in this Annual Report may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements.

Because forward-looking statements are inherently subject to risks and uncertainties, some of which cannot be predicted or quantified, you should not rely upon these forward-looking statements as predictions of future events. The events and circumstances reflected in the forward-looking statements may not be achieved or occur. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future results, performance, or achievements. The forward-looking statements made in this Annual report relate only to events or information as of the date on which the statements are made in this Annual Report. Except as required by applicable law, we do not plan to publicly update or revise any forward-looking statements contained herein, whether as a result of any new information, future events, changed circumstances or otherwise. We intend the forward-looking statements contained in this Annual Report to be covered by the safe harbor provisions for forward-looking statements contained in Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”).

SUMMARY RISK FACTORS

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

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PART I

Item 1. Business.

Overview

We are a clinical stage global biopharmaceutical company aiming to develop and deliver novel oral therapeutics to treat a wide range of chronic diseases with unmet medical need. Our differentiated technology platform leverages structure-based drug discovery and computational chemistry expertise and enables us to develop oral small molecule therapeutics for the treatment of various diseases including those impacting the metabolic, cardiovascular, and pulmonary systems. In February 2023, we completed our Initial Public Offering (“IPO”) for net proceeds of approximately $166.7 million, after deducting the underwriting discounts and commissions and estimated offering expenses payable by us. In September 2023, we entered into a share purchase agreement with certain institutional investors (the “Purchase Agreement”), pursuant to which we issued and sold an aggregate of 21,617,295 ordinary shares and 2,401,920 non-voting ordinary shares for net proceeds of approximately $281.5 million (the “Private Placement”).

Our initial focus is on G-protein coupled receptors (“GPCRs”) as a therapeutic target class. GPCRs regulate numerous diverse physiological and pathological processes, and approximately one in every three marketed medicines targets GPCR-associated pathways. By leveraging our world-class GPCR know-how, we aim to design differentiated small molecule therapies to overcome the limitations of biologics and peptide therapies targeting this family of receptors. We are developing GSBR-1290, our oral small molecule product candidate targeting the validated glucagon-like-peptide-1 receptor (“GLP-1R”) for the treatment of type 2 diabetes mellitus (“T2DM”) and obesity. We completed our Phase 1 single ascending dose (“SAD”) study of GSBR-1290 in September 2022. GSBR-1290 was generally well tolerated and demonstrated dose- dependent pharmacokinetic (“PK”) and pharmacodynamic (“PD”) activity. We submitted an investigational new drug (“IND”) application to the FDA to support initiation of a Phase 1b study in T2DM and obesity and received FDA allowance in September 2022. We initiated the Phase 1b multiple ascending dose (“MAD”) study of

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GSBR-1290 in January 2023 and completed dosing in otherwise healthy overweight subjects in March 2023. In May 2023, we submitted a protocol amendment to the FDA and initiated dosing of the Phase 2a proof-of-concept study in T2DM and obesity. We reported topline data for the 28-day Phase 1b MAD study in September 2023, in which GSBR-1290 was generally well-tolerated with no adverse event (“AE”)-related discontinuations and demonstrated an encouraging safety profile and significant weight loss of up to 4.9% placebo-adjusted, supporting once-daily dosing. In December 2023, we reported clinically meaningful topline data from our Phase 2a T2DM cohort, interim results from our Phase 2a obesity cohort and topline data from a Japanese ethno-bridging study of GSBR-1290. These data demonstrated that GSBR-1290 was generally well-tolerated, with no treatment-related SAEs over 12 weeks, with only one participant discontinuing the study due to adverse events in the T2DM cohort and none in the obesity cohort. GSBR-1290 also showed significant reductions in weight in the obesity cohort at 8 weeks, and significant reductions in hemoglobin A1c (“HbA1c”) and weight in the T2DM cohort. We expect to report the full 12-week Phase 2a obesity data in the latter half of the second quarter of 2024 with additional 24 participant data. We also fully enrolled a formulation bridging and titration optimization study to evaluate capsule versus tablet PK and explore different titration regimens of GSBR-1290. We expect to report topline results from this study in the latter half of the second quarter of 2024, in preparation for the global Phase 2b study for obesity which we expect to initiate in the second half of 2024. A Phase 2 study in T2DM is also planned for the fourth quarter of 2024.

A number of GPCR properties contribute to its importance as a drug target class, including interaction with a diverse set of signaling molecules, involvement in a vast array of physiological and pathological processes, and cell surface expression that enables extracellular drug binding. As such, GPCRs have emerged as the largest family of targets for approved drugs, have provided significant benefit to patients and have achieved blockbuster sales in a number of therapeutic indications, including diabetes (Victoza), bipolar disorders (Abilify, Seroquel), asthma (Singulair), hypertension (Diovan, Lopressor), and cardiovascular disease (Plavix). Despite this success, there remain a number of challenges to continued innovation in this target class, including (i) low expression levels on cell surfaces, (ii) the complexity of the multi-subunit peptide GPCR receptor, (iii) difficulties in obtaining relevant crystal structures as a basis for drug design, and (iv) non-specific signaling through multiple intracellular signaling pathways, a concept known as non-biased signaling, which can limit activity and increase side effects. We have developed a platform designed to address these key challenges, enabling us to discover small molecule drugs to effectively target GPCRs. Further, our platform has been designed to develop novel drugs against other targets where traditional drug discovery methods have not been adequate.

Our next generation structure-based drug discovery platform is based on techniques that our founders have evolved for over 25 years, which enables us to generate small molecule product candidates designed to overcome the historical limitations of GPCR drug development. As shown below, we believe our insights and capability to visualize the three-dimensional protein structures of the target and the ligands combined with the computational chemistry capabilities of our co-founder and strategic partner, Schrödinger, give us significant competitive advantages in highly efficient and rational drug design. We design our novel compounds by combining our knowledge of GPCR structures together with advanced physics-based computational methods, which we believe allows us to predict the binding affinity of molecules to the target site with a high degree of accuracy.

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Advantages of GPCR oral small molecule therapeutic

CHALLENGES OPPORTUNITIES

●Scalability and costs ●Orally available, better patient compliance

●Limited stability ●No cold-chain requirements

●Cold supply chain requirements ●Lower costs

●Higher costs ●Large scale manufacturing capability

We believe the strengths of our platform position us to develop oral small molecule drugs that can deliver biologic-like activity and specificity. Oral small molecules can address many of the key limitations of biologic and peptide drugs, thereby significantly improving patient access. We believe this is particularly important for the most prevalent chronic diseases including those involving the metabolic, cardiovascular, and pulmonary systems.

Our lead product candidate, GSBR-1290, is an oral and biased small molecule agonist of GLP-1R, a validated GPCR drug target for T2DM and obesity, currently in Phase 2 development. There are currently ten marketed peptide molecules that target GLP-1R; collectively, these peptide therapies generated worldwide sales of $65 billion in 2023. However, there are currently no approved oral small molecule therapies targeting GLP-1R. In non-human primate (“NHP”), studies, GSBR-1290 demonstrated glucose-dependent insulin secretion and suppressed food intake, resulting in weight reduction. Given these findings and other compelling preclinical data, we completed a Phase 1 study in healthy volunteers for GSBR-1290 in September 2022, a Phase 2a study development in diabetes in December 2023 and expect to complete a Phase 2a study in obesity in the latter half of the second quarter of 2024. To date GSBR-1290 has demonstrated generally favorable safety, tolerability and efficacy results in clinical trials. Beyond GSBR-1290, we are developing next generation GLP-1R candidates, including dual GLP-1R/glucose-dependent insulinotropic polypeptide receptor (“GIPR”) agonists and amylin agonists, each designed with customized properties to achieve additional benefit.

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We are also developing oral small molecule therapeutics targeting other GPCRs for the treatment of pulmonary and cardiovascular diseases. Specifically, we are advancing ANPA-0073, our biased agonist, targeting the apelin receptor (“APJR,”) a GPCR that has been implicated in idiopathic pulmonary fibrosis (“IPF”). In September 2022, we completed a Phase 1 SAD and MAD study evaluating ANPA-0073 in healthy human volunteers, in which it was generally well tolerated. Additionally, we are developing an antagonist that targets lysophosphatidic acid 1 receptor (“LPA1R”), a GPCR implicated in responses to tissue injury and pro-fibrotic processes. We have demonstrated substantial anti-fibrotic activity of our LPA1R antagonists in mouse models of fibrotic lung disease and we selected a development candidate, LTSE-2578, in January 2023 and expect to initiate a first-in-human study in the second quarter of 2024.

We are also dedicated to fueling our pipeline and pursuing drug discovery partnerships. Through our discovery engine, we leverage the power of cryo-electron microscopy (“cryo-EM”) machine learning and X-ray crystallography, as the basis for our molecular designs. We employ state-of-the-art small molecule hit identification, including DNA encoded library technology and affinity mass spectrometry selections for membrane proteins.

Our Strategy

Our mission is to discover and develop broadly accessible oral therapeutics to treat a wide range of chronic diseases with unmet medical need through advancements in structure-based drug discovery and computational chemistry. The key pillars of our business strategy to achieve this mission include:

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Our Pipeline and Programs

We pursue opportunities to target GPCRs in human diseases on the basis of validated biology, safety, development feasibility and market potential. We are building a pipeline of wholly-owned oral small molecule drugs targeting chronic diseases with unmet medical need and commercial potential. Our initial focus is in areas of metabolic, cardiovascular and pulmonary diseases.

The following table summarizes key information on our current product candidates:

Metabolic Diseases

We are initially advancing our GLP-1R franchise as a treatment for obesity and T2DM, conditions affecting approximately 764 million and 537 million people worldwide, respectively. We believe our GLP-1R programs have demonstrated qualities that offer the potential to differentiate them from current approved and development stage programs.

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Pulmonary and Cardiovascular Diseases

We are evaluating our LPA1R program, LTSE-2578 for IPF and PPF.

Our LPA1R program, LTSE-2578, is an investigational oral small molecule LPA1R antagonist. We believe LTSE-2578 is a differentiated molecule because it demonstrated potent in vitro and in vivo activity in preclinical IPF models and dose dependent inhibition of histamine release as the PD marker. We plan to initiate a first-in-human study in the second quarter of 2024.

GPCRs as a Therapeutic Target Family

GPCRs form the largest human membrane protein family, consisting of approximately 800 identified members as illustrated below. GPCRs are involved in several vital physiological functions, such as immune system regulation and inflammation, autonomic nervous system transmission, behavioral and mood regulation, sensory transmission, and maintenance of homeostasis, making them important targets for numerous therapeutics. To date, there are approximately 475 drugs on the market acting at over 100 unique GPCRs. Additionally, more than 220 GPCRs have not yet been explored as clinical targets, hence representing broad untapped therapeutic potential for addressing global healthcare needs.

Phylogenetic tree of GPCR targets

GPCR targeting drugs have successfully delivered significant patient benefit resulting in large market opportunities in many therapeutic areas. Examples include liraglutide (Victoza for T2DM), aripiprazole (Abilify for schizophrenia, bipolar disorder and depression), montelukast (Singulair for asthma), valsartan (Diovan for hypertension), metoprolol (Lopressor for hypertension, angina, and myocardial infarction), and clopidogrel (Plavix for myocardial infarction and stroke). GPCR related drugs are the largest drug class accounting for approximately 27% of global pharmaceutical sales with estimated aggregate sales of $890 billion between 2011 and 2015.

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GPCRs are proteins that span the entire width of cell membranes. Their primary function is to recognize extracellular substances, primarily ligands, and transmit signals across the cell membrane to the inside of the cell.

Schematic of a GPCR

As shown above, the binding of extracellular ligands to GPCRs elicits conformational changes that impact the intracellular side of the receptor, resulting in the formation of a GPCR complex with signal transducers, particularly G-proteins. These signal transducers go on to interact with second messengers, ultimately either stimulating or inhibiting certain cellular processes.

GPCRs signal not only through G-proteins, but also through β-arrestins and other non-G-protein transducers. Β-arrestins play an essential role in many physiological and pathological processes, and are involved in the desensitization, internalization, sequestration, and trafficking of GPCRs. Certain GPCR ligands are capable of simultaneously activating both G-protein and non-G-protein mediated signaling pathways, which can lead to a variety of physiologic as well as pathologic effects.

Challenges of GPCR Therapeutic Discovery and Development

Despite tremendous advancements in structure-based drug design and development, GPCR drug discovery and development remains challenging.

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Drug discovery approaches targeting GPCRs have evolved from traditional approaches including high throughput screening to rational design for enhanced activity, tailor-made signaling response, and improved selectivity, which leads to improved safety and tolerability profiles.

Our Platform and Approach

Our platform is based on techniques that our founders have been evolving for over 25 years, which have enabled them to deliver multiple marketed medicines. Our approach enables us to generate small molecule product candidates that are designed to overcome the historical limitations of GPCR drug development.

Our insights and capabilities enable us to visualize the three-dimensional protein structures of the target and the ligands. We believe this visualization combined with the computational chemistry capabilities of Schrödinger gives us significant competitive advantages in highly efficient and rational drug design. We design our novel compounds by combining our knowledge of GPCR structures together with advanced physics-based computational methods, which we believe allows us to predict the binding affinity of molecules to the target site with a high degree of accuracy.

As shown below, our technology platform allows us to determine feasibility, optimize the design of, and efficiently generate families of potent and highly selective small molecule candidates.

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Structure Therapeutics integrated technology platform from target to IND

Oral small molecules have the potential to address the key limitations of biologic and peptide drugs, such as high cost and patient inconvenience, thereby significantly improving patient access. We believe this is particularly important for the most prevalent chronic diseases including those involving the endocrine, cardiovascular, and pulmonary systems. We believe the strengths of our technology platform will enable us to develop oral small molecule drugs that can deliver biologic-like activity and specificity.

Strategic GPCR Target Prioritization

We start with target prioritization by focusing on validated GPCR targets that do not have attractive small molecule solutions. We then prioritize by assessing the feasibility of a small molecule solution for these targets and market opportunities of their respective target indication.

Expertise in GPCR Structure-Based Drug Discovery

GPCRs are difficult to characterize structurally because they are composed of seven transmembrane domains, have low expression, and are unstable outside of the cell membrane environment. While structure-based approaches have been utilized for decades in soluble protein drug discovery, recent breakthrough advancements in computational chemistry, artificial intelligence, machine learning and electron microscopy are redefining the field of GPCR structure-based drug discovery.

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Visualization of GPCR Structure and binding site interactions

As shown above, our structure-based technology platform combines direct visualization of protein receptor binding interactions with advanced simulation of molecular motion and signal transduction. Site 1 is considered to be the orthosteric or primary binding site for receptor activation. Site 2 is on the surface of the receptor, often referred to as the allosteric site and may potentially regulate receptor activation signaling. By visualizing and analyzing how different ligands bind to a particular target and specific sites and affect their conformational dynamics, we believe we are able to efficiently convert biologics and peptides into more accessible, patient-accommodating oral small molecules. In addition, we can enhance the pharmaceutic properties of our small molecules with the aim to elicit the desired function while maintaining superior pharmaceutical properties.

Non-biased vs biased GPCR agonists

Additionally, GPCR signaling can follow several pathways and molecules can be designed such that their pharmacology is selected to create “biased signaling” as illustrated above. GPCRs are known to signal not only through G-proteins, but also through β-arrestins, intracellular proteins that “arrest” the signal and stop the receptor from becoming over-stimulated through a receptor internalization mechanism. Using the three-dimensional structures of GPCRs and selection methods, we can potentially design highly selective “biased”

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molecules that preferentially activate G-protein and not β-arrestin pathways, which could lead to enhanced clinical activity as well as an improved safety profile due to lower dosage requirements.

GPCR Experience

Robust and Integrated Medicinal Chemistry to Generate and Optimize Hits on GPCR Targets

We have extensive medicinal chemistry know-how on the discovery and development of novel molecules that target GPCRs. When coupled with our deep understanding of GPCR biology, we have the potential to design appropriate chemotypes for each GPCR function as illustrated below.

Family members with determined structures are

highlighted within the tree, and their binding pockets with the ligand

Four character code at end of each image is Protein Data Bank ID.

Further optimization of compounds powered by our excellence in medicinal chemistry lead us to identify potent and selective oral small molecule product candidates.

Partnership with Schrödinger Leveraging its Cutting-Edge Computational Chemistry Capability

We have collaborations with Schrödinger on the iteration and optimization of GPCR lead compounds using various next-generation physics-based computational technologies. Schrödinger is a scientific leader in chemical simulation, accurate physics-based methods, which includes among many technologies, Free Energy Perturbation (“FEP”) and in silico drug discovery. Its computational platforms integrate predictive physics-based methods with machine learning to evaluate billions of compounds in silico, achieving experimental accuracy on properties such as binding affinity and solubility. Through this iterative process, we can accelerate evaluation and optimization of molecules in silico ahead of synthesis and assay, and then further optimize them through additional cycles of computation analysis.

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Structure Therapeutics Integrated Platform

As shown above, our collaborations with Schrödinger in our computational and chemistry module enables us to accelerate our lead optimization drug discovery process and reduce development costs. In our partnership with Schrödinger on GPCR drug discovery, we retain the full product rights on the compounds under development.

Safety Assays

We have proactively used cell and animal-based safety assays to better screen out unwanted side effects, such as liver, cardiovascular and central nervous system toxicity at the initial stages of lead optimization, and we have designed molecules to help minimize safety risks at every step. Our in-depth understanding of GPCR signaling pathway provide us insights to design biased molecules when necessary to mitigate any unwanted liabilities while maintaining the desired activities.

Other Proprietary In-House Development Tools for Drug Synthesis and Screening

Basecamp Bio focuses specifically on technology development and early discovery and continues to innovate new methods, particularly in hit discovery.

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Basecamp Bio early discovery

In addition to our robust iterative structure-based drug discovery platform shown above, Basecamp Bio is optimizing proprietary in-house drug discovery tools including DNA-Encoded Library technology and Affinity Mass Spectrometry technology to enable the synthesis and screening of vast numbers of small molecule product candidates at a scale that is not possible to achieve by traditional methods.

Our Lead GPCR Programs

By leveraging our unique platform capabilities, we are building a pipeline of oral small molecule product candidates designed to have patient impact and broad commercial opportunity in therapeutic areas traditionally dominated by biologics and peptide medicines. We are initially focusing on chronic metabolic, cardiovascular, and pulmonary diseases with unmet medical need.

Our GLP-1R Focused Franchise for Metabolic Disorders

To unlock the full potential of our drug discovery platform across a broad range of metabolic indications, we intend to build out our franchise approach for GLP-1R. Our franchise approach involves developing next generation GLP-1R candidates, with each exhibiting customized properties to achieve additional benefit. Our lead GLP-1R product candidate, GSBR-1290, has the potential to be a differentiated treatment for T2DM and obesity based on preclinical data.

GSBR-1290 is an oral and biased agonist of the GLP-1R, a validated GPCR drug target involved in a variety of metabolic conditions. We completed a Phase 1 SAD study for GSBR-1290 in healthy volunteers in September 2022. We initiated the Phase 1b MAD study in January 2023 and completed dosing in otherwise healthy overweight subjects in March 2023. In May 2023, we submitted a protocol amendment to the FDA and initiated dosing of the Phase 2a proof-of-concept study in T2DM and obesity. We reported topline data for the 28-day Phase 1b MAD study in September 2023, in which GSBR-1290 was generally well-tolerated with no adverse event-related discontinuations and demonstrated an encouraging safety profile and significant weight loss of up to 4.9% placebo-adjusted, supporting once-daily dosing. In December 2023, we reported clinically meaningful topline data from our Phase 2a T2DM cohort, interim results from our Phase 2a obesity cohort and topline data from our Japanese ethno-bridging study of GSBR-1290. These data demonstrated

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that GSBR-1290 was generally well-tolerated, with no treatment-related SAEs over 12 weeks, with only one participant discontinuing the study due to adverse events in the T2DM cohort and none in the obesity cohort. GSBR-1290 also showed significant reduction in weight in the obesity cohort, and significant reductions in HbA1c and weight in the T2DM cohort. We expect to report the full 12-week Phase 2a obesity data in the latter half of the second quarter of 2024 with additional 24 participant data. We also fully enrolled a formulation bridging and titration optimization study to evaluate capsule versus tablet PK and explore different titration regimens of GSBR-1290. This study is expected to be completed in the latter half of the second quarter of 2024, in preparation for the global Phase 2b study for obesity which we expect to initiate in the fourth quarter of 2024. A Phase 2 study in T2DM is also planned for the second half of 2024. Based on our preclinical and clinical data, we believe that GSBR-1290 and our next-generation product candidates have the potential to have highly differentiated profiles versus currently approved therapies and those in development.

Diabetes Disease Background

Diabetes mellitus (“DM”) is an endocrine related disorder of glucose regulation with subsequent hyperglycemia, or high blood sugar, which develops following pancreatic β-cell destruction or dysfunction resulting in severe loss of insulin production, also known as type 1 diabetes, or β-cell dysfunction and loss of insulin sensitivity, also known as T2DM. T2DM is more common in adults and accounts for around 90% of all diabetes cases. In T2DM, the loss of insulin sensitivity is often preceded by being overweight or obese, and manifests along with hypertension and dyslipidemia. Regardless of etiology, once hyperglycemia develops, patients with diabetes share a common disease course characterized by atherosclerotic diseases such as coronary heart disease, stroke, peripheral vascular disease and/or, microvascular diseases such as nephropathy, retinopathy, and neuropathy. Additionally, hyperglycemia is associated with metabolic dysfunction, chronic inflammation, and an increase in infections.

According to the 2021 International Diabetes Federation Diabetes Atlas, more than one in ten adults are now living with diabetes globally. The estimated prevalence of diabetes in adults aged 20 to 79 years has more than tripled since 2000, from an estimated 151 million (4.6% of the global population in this age group at the time) to 537 million (10.5%) today. If trends continue, the number will jump to a staggering 783 million (12.2%) by 2045. The number of adults with diabetes in the United States reached 32.2 million in 2021, while China has the largest numbers of adults with diabetes at 140.9 million. In 2021, approximately 6.7 million adults aged 20 to 79 are estimated to have died as a result of diabetes or its complications. According to American Diabetes Association (“ADA”), the total estimated cost of diagnosed diabetes in the United States increased to $327 billion in 2017, which included $237 billion in direct medical costs and $90 billion in reduced productivity.

In newly diagnosed T2DM patients, treatment is focused on improving modifiable risk factors such as obesity, low physical activity and high caloric diet through patient education that includes instruction on maintaining a healthy lifestyle including nutritional counseling, avoiding excessive calories and rapidly absorbed carbohydrates, and physical exercise. Patients who are unable to achieve glycemic control through weight loss and/or lifestyle modifications should be started on single or combination glucose-lowering medications to lower their glycemic burden and reduce the risk of cardiovascular and other complications.

Obesity Disease Background

Obesity, defined as a body mass index (“BMI”) of > 30 kg/m2, is a major independent risk factor for T2DM. Approximately 90% of T2DM patients are considered either overweight with a BMI between 25.0 kg/m2 and 29.9 kg/m2, or obese with a BMI of 30 kg/m2 or greater. Worldwide obesity has nearly tripled between 1975 and 2016. As of 2020, 1.9 billion (39%) adults were overweight, including over 764 million (15%) adults who were obese. In men, being slightly overweight increased diabetes risk seven-fold and in women, being slightly overweight increased diabetes risk twelve-fold. Being obese increased the risk to 60-fold.

Obesity affects nearly one third of all adults in the United States and is associated with a range of comorbidities, such as T2DM, cardiovascular disease, obstructive sleep apnea, and cancer. Importantly, even

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modest weight reduction, on the order of five to ten percent, can significantly reduce comorbidities and improve health-related outcomes and has been recently recommended by the major scientific societies (European Association of the Study of Diabetes (“EASD”) and ADA). Obesity therefore represents an immense commercial opportunity with very few approved therapies on the market. The GLP-1R agonist semaglutide, approved for use in T2DM, has also been approved for weight management for which it is marketed under the brand name Wegovy, which is estimated to reach peak sales of $6.7 billion in 2026.

Relationship Between T2DM and Obesity

T2DM and obesity are not independent conditions, as the majority of patients with T2DM are obese. Observed increases in the prevalence of T2DM are related to the increasing prevalence of obesity and multiple mechanisms have been proposed through which they may be linked pathophysiologically. Upper body and visceral fat are associated with T2DM, metabolic syndrome and cardiovascular disease. Obesity is a major contributor to poor metabolic control in patients with T2DM.

Increasingly, weight reduction is seen as an important goal of therapy for patients with T2DM. Weight loss in the first year of treatment of T2DM has been associated with an increase in life expectancy. According to the ADA Standards of Medical Care in Diabetes—2022, management of obesity is an important factor in the treatment of diabetes since even a small degree of weight loss can improve control of blood sugar levels, resulting in a decreased need for glucose-lowering medications. Given this information, a therapy that can both lower blood glucose and help with weight management in T2DM could have near-term benefits in glycemic control and longer-term benefits in increased insulin sensitivity and reduction of cardiovascular risk.

Current Treatments for T2DM and Obesity

First-line treatment for patients with T2DM involves lifestyle modifications and metformin. If glycemic control remains inadequate, an additional oral glucose lowering medication should be added. Options include sodium-glucose transport protein 2 inhibitors, dipeptidyl peptidase-4 inhibitors, and GLP-1R agonists. Current treatment algorithms suggest that GLP-1R agonists should be preferentially used after metformin failure in patients who are at high risk for, or who have established, atherosclerotic cardiovascular disease. Several scientific societies, including the EASD and ADA, recommend GLP-1R agonists as first line therapy in patients with established atherosclerotic cardiovascular disease or in those at high risk of developing disease. According to Global Data, Eli Lilly and Company (“Eli Lilly”), Novo Nordisk, Merck and Sanofi S.A. (“Sanofi”), have captured significant market share in the approximately $65.4 billion market for glucose-lowering agents in 2023, which is projected to grow to $115.4 billion by 2027 as depicted below.

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Historical and projected global obesity and type-2 diabetes drug sales by class

Overview of GLP-1R Signaling Pathway and Target Biology

GLP-1 is an incretin peptide secreted in the intestinal tract in response to food intake. GLP-1 stimulates insulin secretion from pancreatic β-cells and inhibits glucagon secretion from pancreatic α-cells. GLP-1 receptors are located on various cell and tissue types including pancreatic β-cells, central and peripheral neurons, cells of the intestinal tract, vascular smooth muscle and endothelial cells, coronary arteries, and the sino-atrial node of the heart. Through actions at these receptors, GLP-1 and GLP-1R agonists have demonstrated widespread therapeutic effects in patients with diabetes, including stimulating insulin secretion and lowering blood glucose levels, slowing gastric emptying, reducing caloric intake, promoting weight loss, improving lipoprotein metabolism, lowering systolic blood pressure, improving complications from arteriosclerotic cardiovascular diseases, and reducing cardiovascular disease morbidity and mortality, as illustrated below.

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GLP-1R pathway and target biology

Endogenous GLP-1 is rapidly degraded in vivo by DPP-4, with a half-life of one to two minutes. The development of GLP-1R agonists for the treatment of diabetes and obesity has involved modifications to the GLP-1 peptide and/or conjugation to carrier compounds or matrices that delay degradation after subcutaneous administration.

The six marketed GLP-1R and GLP-1R/GIPR agonists are synthetic peptides and include liraglutide and semaglutide marketed by Novo Nordisk; dulaglutide and tirzepatide marketed by Eli Lilly; exenatide marketed primarily by AstraZeneca plc (“AstraZeneca”); and lixisenatide marketed by Sanofi. According to Global Data, these six GLP-1R and GLP-1R/GIPR peptides approved for T2DM and obesity collectively generated approximately $65.4 billion in worldwide sales in 2023, which is projected to reach $115 billion by 2027.

Rybelsus is an oral formulation of semaglutide co-formulated with sodium N-8-(2-hydroxybenzoyl) amino caprylate to limit degradation and improve oral absorption. To date, there are no approved oral small molecule therapies targeting this pathway.

Common side effects of GLP-1R and GLP-1R/GIPR agonists include nausea, vomiting, and diarrhea, which are most pronounced when starting therapy or increasing the dose. Generally, these effects correlate with times of maximum drug concentrations and ameliorate with continued therapy. Typically, slow up-titration to the desired dose can mitigate these side effects. However, once-weekly injectable GLP-1R and GLP-1R/GIPR agonists typically require a long titration period to achieve an optimal dose, potentially delaying therapeutic benefit. Once-daily therapy with an oral small molecule may provide flexibility in titration and allow a combined approach with other oral therapies.

The Unmet Medical Need for Improved GLP-1R Therapeutics in Diabetes and Obesity

GLP-1R agonists provide multiple beneficial effects in patients with T2DM, including excellent glycemic control with low risk of hypoglycemia, weight loss and protection against cardiovascular and renal complications. However, we believe approved GLP-1R agonists have shortcomings in terms of patient convenience, ease of dosing, and cost.

Injectable peptide GLP-1R agonist peptides require patients to self-inject, require inconvenient refrigerated storage and are costly. In addition, long acting GLP-1R agonists typically require long titration periods to

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reach an optimal dose for disease management in order to avoid treatment-associated gastrointestinal side effects.

Oral semaglutide (Rybelsus), the first approved oral GLP-1R peptide agonist, provides an option for patients who are unable or unwilling to self-administer. However, Rybelsus requires a stringent dosing protocol and dosing with up to four ounces of water with no food or beverage within 30 minutes. Additionally, the product’s absorption enhancer may affect the absorption of other concomitantly administered oral medications.

We believe there is an unmet medical need for orally administered GLP-1R agonists that meet or exceed efficacy and safety parameters of available drugs with less stringent preparation requirements. Such existing constraints include restrictive food or fluid dosing protocols, refrigeration, maintenance of effective concentrations throughout the dosing interval, without interfering with the absorption of concomitant medications and that offer the potential for combination products with other glucose lowering agents or other commonly co-administered therapies.

In addition to glycemic control, weight management is increasingly viewed as important to the management of T2DM. Injectable GLP-1R agonists, liraglutide and semaglutide result in weight loss at doses approved for treatment of T2DM, while higher doses of each drug, indicated for chronic weight management, result in greater weight loss. At an appropriate dose, an oral GLP-1R agonist may play a role in managing both blood glucose and weight.

Our Solution: Small Molecule GLP-1R Agonist

GLP-1, along with GIPR, comprise the incretin family, peptide hormones secreted into the blood by enteroendocrine cells in the gut, which play a role in glycemic control. We are taking a franchise approach to our GLP-1R programs by developing next generation GLP-1 agonists and potential GIPR modulators. Leveraging the depth of our GLP-1R/GIPR structure platform, proprietary compound library and deep biology and disease insights, we are advancing multiple generations of structurally distinct GLP-1R agonist molecules through lead optimization. Each molecule is designed to have a different tissue penetration profile and other incretin activities in order to maximize the value and/or realize the full potential offered by our in-house platform.

GSBR-1290 Selective GLP-1R Agonist Program

We are developing GSBR-1290, a biased orally-available small molecule GLP-1R agonist, initially as a treatment for T2DM and obesity. Due to its significant preclinical activity and oral availability, we believe that GSBR-1290 has the potential to be a differentiated treatment with no restrictions on diet or concomitant therapies.

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GSBR-1290 analog bound GLP-1R cryo-EM structure

GSBR-1290 was designed through our internal structure-based drug discovery platform. As shown above, multiple small molecules bound to GLP-1R structures have been generated to guide iterative chemistry design efforts. GSBR-1290 is also designed to be a biased GPCR agonist, which only activates the G-protein pathway without β-arrestin signaling at therapeutic doses, thereby avoiding receptor internalization and de-sensitization. In an intravenous glucose tolerance test (“ivGTT”) in NHPs, GSBR-1290 increased glucose-dependent insulin secretion to a similar level achieved by liraglutide, an approved injectable GLP-1R agonist. In a repeat food intake study in NHPs, GSBR-1290 showed a significant decrease in body weight relative to the placebo and surpassed that seen with liraglutide.

GSBR-1290 Preclinical Data, Pharmacology, and Biomarker Data

In NHP ivGTT studies, glucose was injected five minutes following intravenous administration of either GSBR-1290 (0.05 mg/kg) or liraglutide (0.1 mg/kg). Plasma samples were taken at indicated timepoints to evaluate insulin and glucose levels. GSBR-1290 demonstrated statistically significant decreases in blood glucose concentration via stimulation of insulin secretion in a glucose-dependent manner, similar to liraglutide which was dosed at an equivalent approved human dose.

Robust activity in non-human primate acute ivGTT studies

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Data were presented as mean ± standard error of the mean (“SEM”); one-way ANOVA followed by Dunnett’s multiple comparisons test. *p<0.05, **p<0.01, ***p<0.001 vs vehicle

As shown below, in a seven day repeat oral dosing study in NHPs, GSBR-1290 was evaluated at once-daily oral doses of 2 mg/kg, 6 mg/kg, and 10 mg/kg and compared to placebo and liraglutide. Food intake was measured each day over the first six days of the study and reported as an average of these measurements. ivGTT and body weight were performed before dosing and on the sixth day (body weight) or seventh day (ivGTT) of post-dosing. At all doses of GSBR-1290, glucose reduction was shown to be statistically significantly different versus vehicle and comparable to liraglutide. Similarly, all doses increased insulin secretion significantly except at 6 mg/kg dose, which only achieved statistical p value at 0.055 due to a slightly greater data variability. At 6 mg/kg and 10 mg/kg, a statistically significant reduction of average food intake measured over the first six days of the study compared to vehicle was observed. At 10 mg/kg of GSBR-1290, the average food intake from Day 1 to Day 6 was only 59% relative to liraglutide group. GSBR-1290 at 6 mg/kg and 10 mg/kg also showed a significant decrease in body weight relative to placebo and surpassed liraglutide, with the highest dose of GSBR-1290 achieving more than eight percent reduction in average body weight versus baseline in one week.

Seven day repeat oral dosing study in non-human primates

Data were presented as mean ± SEM; one-way ANOVA followed by Dunnett’s multiple comparisons test.

*p<0.05, **p<0.01, ***p<0.001 vs vehicle

In the description of our clinical trials and preclinical studies below and elsewhere in this Annual Report, n represents the number of participants in a particular group and p or p-values represent the probability that random chance caused the result (e.g., a p-value of 0.01 means that there is a 0.1% probability that the difference between the placebo group and the treatment group is purely due to random chance). A p-value of less than or equal to 0.05 is a commonly used criterion for statistical significance, and may be supportive of a finding of efficacy by regulatory authorities.

In addition, we conducted a preclinical comparison study of GSBR-1290 and PF-06882961, a clinical stage compound in development by Pfizer. Unlike GSBR-1290, PF-06882961 is a partially biased GLP-1R agonist, which could lead to de-sensitization of the receptor in vivo. In an experiment conducted in-house, GSBR-1290 demonstrated comparable in vivo activity to PF-06882961 at a lower exposure. In the acute ivGTT studies, GSBR-1290 achieved similar activity to liraglutide at average concentration around 34 nanomolar (“nM”) (0.05 mg intravenous), comparing to a similar activity achieved by PF-06882961 in an in-house experiment at an average concentration around 442 nM (0.3 mg intravenous). This suggests that the concentration needed to achieve full activity for GSBR-1290 is at a level much lower than that for PF-06882961. PF-06882961 has been studied in SAD and MAD studies with a maximum dose of 200 mg/BID to achieve maximum HbA1c activity and weight management.

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In-house data showed that PF-06882961 was positive in a glutathione trapping assay. GSBR-1290 was inactive in this assay, suggesting reduced risks with long-term use. In addition, GSBR-1290 also did not show activity as a time dependent inhibitor (“TDI”) for cytochrome P450 3A4 (“CYP3A4”). PF-06882961 was reported as a CYP3A4 TDI, which, if confirmed in clinical trials, suggests the potential for interactions with the 30–50% of marketed drugs metabolized through this pathway.

GSBR-1290 Phase 1 Healthy Volunteer Trial

In September 2022, we completed a first-in-human Phase 1 SAD study for GSBR-1290 in 48 healthy adult volunteers between the ages of 18 and 55. The objective was to assess drug safety, tolerability and PK. The study enrolled six cohorts of eight participants assigned to receive a single dose of GSBR-1290 or placebo in a 3:1 ratio. Doses ranged from 1 mg to 90 mg across the six cohorts. The fourth cohort received 15 mg administered either under a fed condition, which consisted of a standardized high fat breakfast, and under a fasted condition, in each case to characterize the effect of food on the PK of GSBR-1290. A schema of our Phase 1 SAD study is presented below:

Schema of our GSBR-1290 Phase 1 SAD study in healthy volunteers

GSBR-1290 Phase 1 PK and PD Data in Healthy Volunteers

In the study, PK parameters of systemic exposure, Cmax and AUC, increased with doses of GSBR-1290 across the dose range from 1 mg to 90 mg GSBR-1290. GSBR-1290 exhibited supra dose proportionality from 1 mg to 30 mg followed by less than dose-proportional from 30 mg to 90 mg.

The 30mg dose AUC provided more than double the effective AUC0-24h required for glycemic control, derived from non-human primate PK/PD data. Food intake (high fat meal) was associated with a ~36% decrease in the geometric mean Cmax but no significant change in mean AUC value, with 80% relative bioavailability, based on AUC compared with the fasted state.

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GSBR-1290 Phase 1 Safety Data in Healthy Volunteers

GSBR-1290 was shown to be generally well tolerated at all dose levels administrated in this Phase 1 SAD study.

No SAEs and no adverse changes in laboratory tests (including hematology, chemistry and coagulation) were observed. No trial stopping criteria were met. Adverse events (“AEs”) did not result in any early terminations or subject discontinuations from participation in this study.

Treatment-emergent AEs (“TEAEs”) were reported for 32 of 36 participants (89%) following fasted administration of GSBR-1290 and for 7 of 12 participants (58%) following administration of placebo, with a total of 109 TEAEs.

Following administration of GSBR-1290 in the fasted state, most TEAEs were classified as mild (69 of 109, or 63% of all TEAEs) in severity, with 34 TEAEs (31% of all TEAEs) classified as moderate in severity. Six TEAEs (6%) were classified as severe, including four events of vomiting, one event of nausea and one event of catheter site infection. There was an apparent dose-related trend in the severity of TEAEs following single doses of GSBR-1290, with severe TEAEs reported following the 60 mg and 90 mg doses of GSBR-1290, but not following low doses (1 mg, 10 mg, 15 mg). Occurrences in TEAEs of moderate intensity were also higher following higher dose range of GSBR-1290.

The following table shows an overall summary of TEAEs that were reported in the study.

Low dose GSBR-1290 includes 1 mg, 10 mg and 15 mg fasted and high dose GSBR-1290 includes 30 mg, 60 mg and 90 mg fasted.

If a participant had multiple occurrences of a TEAE, the participant was presented only once in the Participant count for a given Preferred Term. Occurrences were counted each time.

There was no notable difference in the overall incidence or severity of treatment-related AEs under fasted and fed administration of GSBR-1290 at a dose level of 15 mg. There was a higher incidence of related TEAEs of vomiting and headache following fasted administration (three of six participants, or 50%) compared to fed administration (one of six participants, or 17%).

The most common TEAEs reported in at least four of 36 participants (>10%) who received GSBR-1290 were nausea, headache, vomiting, dehydration, decreased appetite, dizziness, and diarrhea.

Across the various dose levels, there were apparent dose-related trends in the overall incidence of common TEAEs. The incidence of the TEAEs described above was notably higher following fasted administration of the high dose GSBR-1290 treatments (30 mg, 60 mg, 90 mg) than the low dose GSBR-1290 treatments (1

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mg, 10 mg, 15 mg) and placebo, with a similar observation in treatment-related AEs of nausea, vomiting, dehydration, and headache of at least moderate severity.

We believe all TEAEs observed during the study are in line with the proposed treatment mechanism and typically derive from impacts on appetite, nausea, and vomiting. There was an apparent increasing trend in heart rate over time in both low (1 mg, 10 mg, 15 mg) and high dose (30 mg, 60 mg, 90 mg) GSBR-1290 groups. This increase appeared to peak at 12 hours post-dose and was notably larger in the high dose GSBR-1290 groups. Increases in heart rate over time were observed in the pooled placebo group but to a much lesser extent.

In summary, GSBR-1290 was shown to be generally well tolerated when administered as a single dose of up to 90 mg. However, there were dose-related trends in the incidence, severity and causality of TEAEs, particularly GI related TEAEs, consistent with what has been previously reported in clinical trials involving the GLP-1RA class of drugs. There were no treatment-related AEs reported in patients who received placebo.

PK parameters of systemic exposure increased with dose of GSBR-1290 across the dose range from 1 mg to 90 mg GSBR-1290.

GSBR-1290 Non-clinical Safety Pharmacology and Toxicology Studies

A standard battery of nonclinical safety pharmacology studies (central nervous system, cardiovascular and respiratory) has been completed with GSBR-1290 with no findings anticipated to be of clinical relevance. Genotoxicity assessments demonstrated an absence of genotoxicity potential.

In the 4-week and 13-week GLP toxicology study in rats, the no-observed-adverse-effect level (“NOAEL”) dose was considered to be 1000 mg/kg/day, the highest dose tested. In the 4-week and 13-week GLP toxicology study in NHPs, GSBR-1290 showed pharmacologically related events such as inappetence and bodyweight loss, which were reversible with sufficient recovery periods. There were no GSBR-1290-related deaths during the course of study and no GSBR-1290-related changes in organ weights, gross and histopathology examinations at the end of the dosing and recovery periods. In the 13-week study, NHPs of both sexes in all dose groups, including in the control group, had minimal to moderate multifocal necrosis/infiltration in the liver. The root cause of these liver abnormalities was not determined, but these findings were considered unrelated to GSBR-1290. The FDA reviewed our 13-week GLP toxicology studies in rats and NHPs and agreed that these liver abnormalities were not considered a new non-clinical safety signal related to GSBR-1290.

In nonclinical animal models, GSBR-1290 demonstrated statistically significant decreases in blood glucose concentration and increases of insulin secretion.

In a recent 6-month GLP toxicology study in rats, GSBR-1290 demonstrated a NOAEL dose at 1000 mg/kg/day, which supports an estimated more than 100 fold safety window up to 120 mg human dose. We also conducted a 9-month non-human primate (NHP) GLP toxicology study and found no test article-related change in heart rates or QTc intervals. No meaningful increases in the liver enzymes, ALT/AST, were observed in either the rat or NHP study. There were no significant findings in embryo-fetal developmental toxicology studies in rats and rabbits.

GSBR-1290 Phase 1b MAD study

The Phase 1b MAD study focused on the safety and tolerability of GSBR-1290 in 24 healthy overweight or obese individuals. Participants were randomized 3:1 to GSBR-1290 or placebo across three dose cohorts with target doses of 30mg, 60mg or 90mg.

GSBR-1290 demonstrated reductions in mean body weight ranging up to 4.9 kg compared to baseline, and up to 4.9% placebo-adjusted.

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Percent Weight Change from Baseline to Day 28

% weight change from baseline -0.5% -1.6% -5.2% -5.4%

GSBR-1290 demonstrated an encouraging safety and tolerability profile following once-daily dosing. No participants discontinued the study drug due to adverse events. The majority of adverse events reported were mild, with no severe or serious adverse events observed. As expected for this class, leading adverse events were gastrointestinal-related, with the two most common gastrointestinal adverse events being nausea and diarrhea, with higher incidences observed in all three cohorts compared to placebo. There were no clinically meaningful changes in liver function tests.

Summary of Treatment Emergent Adverse Events

Event, N (%) 30 mg (n=6) 60 mg (n=6) 90 mg (n=6) (n=6)

Any TEAE by maximum severity

Severe 0 0 0 0

Any Serious Adverse Events 0 0 0 0

GSBR-1290 Phase 2a study in diabetes and obesity

The randomized, double-blind, 12-week placebo-controlled Phase 2a clinical trial has enrolled a total of 94 participants to date, including 60 participants randomized to GSBR-1290. The T2DM cohort enrolled 54 participants, randomized to GSBR-1290 at 45 mg (n=10) or 90 mg (n=26), or placebo (n=18), dosed once daily. The obesity cohort initially enrolled 40 participants randomized to GSBR-1290 at 120 mg (n=24) or placebo (n=16), dosed once-daily. An additional 24 participants have been enrolled in the obesity arm as previously announced in September 2023 to replace those for whom 12-week weight data was not collected as a result of a data collection omission. These replacement participants have also been randomized 3:2 to GSBR-1290 or placebo.

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The primary endpoints of the Phase 2a study are safety and tolerability of GSBR-1290. Key secondary endpoints include reduction in weight for both obesity and T2DM cohorts, as well as reduction in HbA1c for the T2DM cohort.

GSBR-1290 Safety and tolerability results

GSBR-1290 demonstrated an encouraging safety and tolerability profile following repeated, daily dosing for all doses studied (up to 120 mg) in the obesity and T2DM cohorts, with results summarized as follows:

● There were no SAEs related to study drug.

Summary of Treatment Emergent Adverse Events (TEAEs)

Phase 2a TDM Cohort Phase 2a Obesity Cohort

(12-week data) (12-week interim data)

45 mg 90 mg Placebo 120 mg Placebo

Event, N (%) (n=10) (n=26) (n=18) (n=24) (n=16)

Any TEAE by maximum severity

Any SAEs related to study drug 0 0 0 0 0

GSBR-1290 Efficacy results

GSBR-1290 demonstrated clinically meaningful activity in both T2DM and obesity cohorts, with results summarized as follows:

Table 1: Diabetes cohort least square means difference (LSM) change in HbA1c from baseline to 12 weeks (%)

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45 mg 90 mg Placebo

LSM HbA1c change from baseline (%) -0.79 -0.84 0.18

% HbA1c change placebo-adjusted (LSM, -1.01 -1.02

P-value vs. placebo p= 0.008 p= 0.001

* LSM, CI and p-value from Mixed Model for Repeated Measures

Table 2: Diabetes cohort LSM change in weight from baseline (%)

45 mg 90 mg Placebo

LSM weight change from baseline (%) -3.32 -3.22 0.04

% weight change placebo-adjusted (LSM, -3.51 -3.26 —

* LSM, CI and p-value from Mixed Model for Repeated Measures

Table 3: Obesity Cohort LSM change in weight from baseline (%) 8 week interim results

120 mg Placebo

LSM weight change from baseline (%) -5.5 -0.82

% weight change placebo-adjusted (LSM, 90% -4.74

P-value vs. placebo p< 0.0001

GSBR-1290 Phase 1 Japanese Bridging Study

The 4-week Phase 1 Japanese ethnobridging study included healthy lean Japanese participants randomized to GSBR-1290 (n=9) and placebo (n=3), and healthy lean non-Japanese participants receiving GSBR-1290 (n=6). GSBR-1290 demonstrated a substantial weight reduction in Japanese participants (-3.91% on GSBR-1290 vs -1.67% placebo) and in non-Japanese participants (-5.13% not placebo-adjusted), with no discontinuations or dose reductions, and no SAEs. These data will be used for regulatory interactions in Japan in preparation for potential future global studies of GSBR-1290.

GSBR-1290 Six- and Nine-Month Toxicology Studies

In preparation for Phase 2b development with longer durations of treatment, we have completed six-month (rodent) and nine-month (non-human primate) toxicology studies to evaluate the safety of GSBR-1290. No major findings were observed in either study, with no test article-related changes observed in the liver, including ALT/AST, at all doses, and a more than 100 fold safety window at the 120 mg therapeutic dose.

Amylin Receptor Agonist - Combination GLP-1R Program

Amylin is co-secreted with insulin from β pancreatic cells upon nutrient delivery to the small intestine as a satiety signal, acts upon sub-cortical homeostatic and hedonic brain regions, slows gastric emptying, and

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suppresses post-prandial glucagon responses to meals. Therefore, new pharmacological amylin analogues can be used as potential anti-obesity medications in individuals who are overweight or obese.

Amylin tool compound showed add-on effects when used with semaglutide

In collaboration with Schrödinger, we are taking a structure-based drug discovery approach to identify oral small molecule amylin agonists for daily use either alone or in combination with GLP-1R agonists to treat obesity and T2DM. We have identified two novel lead series with promising potency and PK profiles. We have obtained multiple high quality Cryo-EM structures and established in-house in vivo animal models, which enable us to advance our lead optimization effort with high efficiency. In an in-house proof-of-concept study in rats, our small molecule amylin tool compound (ACCG-0184) showed additional beneficial effects when used as an add-on treatment to a GLP-1R agonist. We are planning to select a development candidate in the second half of 2024.

GenerationGIPR Modulator - Combination GLP-1R Program

In our GIPR program, we have identified multiple GIPR agonist, dual GLP-1R/GIRP agonist and GIPR antagonist hits for small molecule GIPR modulation. We believe GLP-1R/GIPR modulation has the potential to provide a differentiated treatment in diabetes and obesity.

Recent third-party clinical data showed tirzepatide, a GLP-1R/GIPR modulator, was superior to semaglutide with respect to glycemic control. The glycated hemoglobin level target of less than 5.7% (normoglycemia) was met in 27 to 46% of the T2DM patients who received tirzepatide compared to 19% of those who received semaglutide. The body weight reduction and gastrointestinal related side effects were similar to the GLP-1R agonists. In addition, many patients who received tirzepatide were noted to have improved biomarkers of insulin sensitivity.

We have obtained both GIP and tirzepatide bound GIPR structures along with GLP-1R structures to guide our small molecular design.

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Multiple Structures of ligand bound GLP-1R, GIPR, GCGR

As shown above, representative three-dimensional structures of the incretin GPCRs (e.g., GIPR, GLP-1R, Glucagon receptor) are available for structure-based drug discovery. This structural data enables the ability to design dual and tri modulators of this important class of metabolic GPCRs. The GIPR model shown below suggests that one of our dual GLP-1/GIPR agonists may extend to fill the pocket (highlighted in color) occupied by our GLP-1/GIPR agonist hits. Multiple approaches were applied for hit identification, including a screen of our proprietary incretin compound library. Weak antagonists and agonists were identified. After several rounds of structure activity relationship evolution, a full potential GLP-1R/GIPR antagonist and initial dual GLP-1R/GIPR agonist hit leading to the discovery of an optimized dual GLP-1R/GIPR agonist hit. While displaying different GIPR activity, both compounds still maintained certain levels of GLP-1R activities. We are planning to select a development candidate in the first half of 2025.

GIPR agonist/dual agonist/antagonist hits identified for potential GLP-1R combinations

Our LPA1R and APJR Program for the Treatment of IPF

We are developing LTSE-2578, an investigational oral small molecule LPA1R antagonist for the treatment of IPF. We believe LTSE-2578 is a differentiated molecule because it demonstrated potent in vitro and in vivo activity in preclinical IPF models and dose dependent inhibition of histamine release as the pharmacodynamic marker. We have completed IND-enabling studies including 28 day GLP-toxicology studies in dogs and rats.

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We are planning to initiate a first-in-human Phase 1 single and multiple ascending dose study in healthy volunteers in the second quarter of 2024.

In addition, we are developing ANPA-0073, an investigational oral small molecule APJR agonist, for the treatment of IPF. When compared to a non-biased APJR agonist (Apelin-12) in a preclinical study, ANPA-0073 avoided hypotension. In September 2022, we completed a Phase 1 SAD and MAD study evaluating ANPA-0073, in which it was generally well tolerated in healthy human volunteers. We expect to conduct additional preclinical studies and are evaluating plans to initiate a Phase 2 study in IPF.

IPF Disease Background

IPF is a life-threatening chronic interstitial lung disease characterized by progressive fibrosis of lung tissue leading to impaired blood oxygenation, progressive deterioration in lung function, and ultimately respiratory failure. IPF occurs primarily among patients between the ages of 50 and 70 years and is associated with high mortality, with median survival time between three- and five-years following diagnosis. Estimated prevalence of IPF is 13 to 20 per 100,000 people worldwide. In the United States, approximately 100,000 people are affected, and 30,000 to 40,000 new cases are diagnosed each year.

Normal lungs (A) and lungs with IPF (B)

The etiology of IPF remains unknown. IPF is a progressive disease, beginning with inflammation followed by fibrotic buildup as damaged epithelial cells surrounding the alveoli are replaced by fibroblasts, as shown above. Buildup of fibroblasts cause the lungs to thicken over time, becoming stiff and unable to properly function. In addition to complications from the disease itself, IPF can lead to other severe co-morbidities, including lung cancer, pulmonary embolisms, pneumonia or PH.

The most common symptoms of IPF are shortness of breath, persistent cough, fatigue, and weight loss, severely impacting quality of life. Given the non-specific nature of these symptoms, IPF is challenging to diagnose, particularly in the early stages of disease.

Current Treatments for IPF and Unmet Medical Need

Currently, there are two FDA-approved drugs for the treatment of IPF, Esbriet (pirfenidone) and Ofev (nintedanib).

Pirfenidone exhibits anti-fibrotic, anti-inflammatory and antioxidant properties through down-regulation of key pro-fibrotic growth factors including TGF-β, inhibition of inflammatory cytokines production and release and reduction of lipid peroxidation and oxidative stress. In Phase 3 trials, pirfenidone slowed disease progression and functional decline in patients with IPF and showed a reduced risk of mortality. Common adverse effects of pirfenidone include gastrointestinal intolerance such as nausea, diarrhea and dyspepsia and skin reactions, including rash and photosensitivity.

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Nintedanib is an intracellular inhibitor that targets multiple tyrosine kinase growth factor receptors (vascular endothelial growth factor receptors 1-3, fibroblast growth factor receptors 1-3, and platelet-derived growth factor receptors α and β). By inhibiting these receptors, nintedanib interferes with processes implicated in IPF pathogenesis, including proliferation and migration of lung fibroblasts, and differentiation of fibroblasts to myofibroblasts. Nintedanib may also have a mortality benefit. Its most frequent side effects are diarrhea and nausea.

Both drugs are recommended by the most recent treatment guidelines from 2015. These therapeutics slow disease progression, but do not offer a cure. The two-year mortality rate is 36% and 39% after treatment of nintedanib and pirfenidone respectively. Safety and tolerability concerns, which resulted in a 20% to 30% discontinuation rate due to side effects, limit therapeutic usage and there remains an unmet medical need for IPF patients. Despite these limitations, these two drugs have generated total sales of $3.6 billion in 2020.

Overview of LPA1R Pathway and Target Biology

Lysophosphatidic acid (“LPA”) is a bioactive lipid which exerts potent extracellular signaling through its interaction with several GPCRs, mediating important cellular responses, such as proliferation, migration, and cytoskeletal reorganization.

LPA/LPA1R in IPF pathogenesis

As shown above, upon injury to certain cells in the lung, LPA levels increase and activate LPA1R. In published third-party preclinical studies, LPA1R activation promoted pro-fibrotic processes, including accumulation of fibroblasts; genetic or PD inhibition of LPA1R attenuated bleomycin induced lung fibrosis by mediating fibroblast recruitment and vascular leak.

We believe that LPA1R has been clinically validated as a potential target based on proof-of-concept data from a third party, randomized, double blind, placebo-controlled Phase 2 trial of an LPA1R antagonist (BMS-986020) in patients with IPF. Patients in the 600mg BID cohort exhibited significantly slower rates of forced vital capacity decline from baseline to 26 weeks versus placebo. Although the compound was generally well tolerated, dose-related hepatobiliary toxicity in some patients led to early termination of the trial. After conducting additional toxicology investigations, BMS reported that hepatobiliary toxicity was likely caused by inhibition of bile acids efflux transporters such as Bile Salt Export Pump (“BSEP”). Second

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generation LPA1R antagonists (BMS-986278) with minimal BSEP inhibition by BMS are currently in clinical development.

We believe that LPA1R can also be used to treat progressive pulmonary fibrosis (“PPF”), which is defined as the presence of at least two of the three criteria, which are worsening respiratory symptoms, functional decline, and radiological progression in patients with interstitial lung disease with radiological pulmonary fibrosis for known or unknown reasons other than IPF, within the previous year. A conditional recommendation has been made for nintedanib in the treatment of PPF, and further studies are needed for pirfenidone.

As illustrated below, we utilized the available protein structural information to collaborate with Schrödinger. After validation and customization with an initial set of compounds for retrospective analysis, Schrödinger’s FEP was utilized and suggested potency in the prospective analysis. This customized model greatly expedited the iterative lead optimization process and helped us to achieve candidate selection efficiently.

Iterative LPA1R Structure-Based Drug Discovery

LTSE-2578 Preclinical Data

In an in vivo PK and PD study, mice were orally dosed with LTSE-2578 and challenged by LPA at one hour and at 12 hours after dosing. Plasma was collected at two minutes post-LPA challenge and histamine level was measured as a pharmacodynamics biomarker. As shown below, LTSE-2578 demonstrated reductions in histamine release at doses ≥ 0.06 mg/kg, as compared to approximately 45 ng/mL and approximately 201 ng/mL for BMS’s first generation (BMS-986020) and second generation (BMS-986278) LPA1R antagonists, respectively.

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LTSE-2578 demonstrated dose dependent inhibition of histamine release

LTSE-2578 showed limited inhibition (IC50 > 50 μ M) of efflux transporters including BSEP, MRP3 and MRP4, potentially reducing the likelihood of hepatobiliary toxicity caused by efflux transporter inhibition.

One month GLP toxicity studies of LTSE-2578 in rats and dogs have been completed to enable the upcoming first time in human study.

Overview of APJR Pathway and Target Biology

The apelinergic system plays a key role in the maintenance of vascular health and function through regulation of fibrosis, cell proliferation and inflammation. APJR is highly expressed in the pulmonary vascular endothelium and is upregulated on endothelial cells in IPF patients. Further, activation of the apelinergic system through APJR has been shown to protect endothelial cell survival, and is critical for regeneration of the small capillary blood vessels. These findings support the possibility that an APJR agonist may play a beneficial role in interstitial lung disease.

Apelin binding to APJR activates G-protein second messenger signaling and leads to reduced production of cyclic adenosine monophosphate (“cAMP”). Apelin binding to APJR also initiates a feedback loop that eventually downregulates apelin-APJR signaling by recruitment of β-arrestin and subsequent internalization of APJR. In addition, recruitment of β-arrestin triggers downstream pathways that induce vasorelaxation and cardiomyocyte hypertrophy. Therefore, the degree of activation by designed ligands of G-protein and β-arrestin signaling pathway may lead to both therapeutic benefit and undesirable effects.

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Importance of endothelial cells on pulmonary fibrosis

As shown above, while epithelial cell damage and the inflammatory response are known contributors to fibrosis, recent studies have highlighted the importance of endothelial cells on pulmonary fibrosis. Microvascular injuries are observed in patients with pulmonary fibrosis. Persistent vascular leak may support a pro-inflammatory and pro-fibrotic environment. Endothelial senescence is found in the lung of IPF patients. Senescent endothelial cells could secrete factors that directly stimulate fibroblast activation. Targeting apelin pathway may promote capillary regeneration, ameliorate the inflammatory environment, and reduce endothelial senescence, in this way reducing lung fibrosis. Since an APJR agonist mainly targets endothelial cells, we believe it could be easily combined with the current standard of care, pirfenidone and ninetedanib, which do not target the anti-fibrosis pathway from endothelial cells.

Our APJR Program for the Treatment of Obesity

APJ is expressed in human and murine skeletal muscles. Apelin and APJ are widely distributed in the body and are involved in various physiological functions as blood pressure regulation. Depending on the cell type studied, APJ activation enhances extracellular signal-regulated kinases, AMPK, AKT, and p70S6 kinases and the inhibition of cyclic AMP (cAMP) production. Activation of these pathways would result in worthwhile increases in the protein content of skeletal muscles. Apelin has in fact proved beneficial in maintaining muscle and could potentially counteract age-associated atrophy.

We are evaluating ANPA-0073 which is Phase 2 ready, to be used in combination with weight loss medicines for selective or muscle-sparing weight loss.

ANPA-0073

We are also developing ANPA-0073, an investigational, oral, small molecule APJR agonist, for the treatment of IPF. ANPA-0073 is designed to suppress cAMP production through activation of a G-protein-mediated signaling without significant activation of the β-arrestin pathway in order to avoid APJ internalization, and thereby potentially avoid any desensitization effects of an unbiased APJR agonist. We conducted preclinical in vitro studies on our compounds and third-party compounds to assess arrestin signaling and internalization. As shown below, apelin peptide and clinically tested competitor compounds including AMG-986 and

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BMS-986224 are all non-biased APJR agonists in these in vitro studies, with low β-arrestin/cAMP and internalization/cAMP ratios. Our molecules, such as ANPA-0073 and ANPA-137, are designed to be biased with much higher β-arrestin/cAMP and internalization/cAMP ratios than apelin peptide and the competitor compounds shown below.

APJR biased agonism is a potential differentiator for ANPA-0073

BIASED SELECTIVITY

β-ARRESTIN

COMPOUND ID SIGNALING/cAMP INTERNALIZATION/cAMP

ANPA-0073 Preclinical Data

In an in vitro study, ANPA-0073 demonstrated high potency in suppressing cAMP production through the G-protein-mediated signaling pathway with a half maximal excitatory concentration (EC50) value of less than 10 nM (n=15), but less potency in triggering the β-arrestin pathway and APJR internalization respectively. These data suggest ANPA-0073 is highly biased. The G-protein agonist potency of ANPA-0073 was similar across different species (rat, dog and monkey).

Anti-fibrosis effect of an APJ agonist ANPA-0137 was evaluated in bleomycin induced lung fibrosis model. Seven days after bleomycin challenges, mice received oral ANPA-137 for two weeks. ANPA-137 significantly reduced lung fibrosis Ashcroft scores and inflammatory cells infiltration into lung as quantified by inflammatory score as shown below.

APJR agonist demonstrated anti-fibrosis efficacy in therapeutic IPF mouse model

Furthermore, ANPA-137 also demonstrated anti-fibrotic activity in an in vivo bleomycin-induced rat lung fibrosis model. Similar to mouse bleomycin study design, seven days after bleomycin challenges, rats

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received 15 mpk of oral ANPA-137 for two weeks. ANPA-137 significantly reduced lung fibrosis as quantified by Ashcroft score as shown below.

APJR agonist demonstrated anti-fibrosis efficacy in therapeutic IPF rat model

ANPA-0073 Phase 1 Healthy Volunteer Trial Design

In September 2022, we completed a two-part, 96 subject, first-in-human Phase 1 SAD and MAD study for ANPA-0073 in 48 healthy adult volunteers between the ages of 18 and 55. The objective was to assess drug safety and PK. The first part of this study was a SAD study, involving eight cohorts of eight participants assigned to receive a single dose of ANPA-0073 or placebo in a 3:1 ratio. Doses from 2 mg to 600 mg across the eight cohorts were evaluated. The second part of the trial was a MAD study, including four cohorts of eight subjects receiving sequential ascending doses of ANPA-0073 daily for seven days, increasing from 75 mg to 500 mg once daily. A schema of our Phase 1 study is presented below:

Schema of our ANPA-0073 Phase 1 study in healthy volunteers

ANPA-0073-01 Part A SAD Schema

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ANPA-0073-01 Part B MAD Schema

ANPA-0073 Phase 1 Safety Data in Healthy Volunteers

ANPA-0073 was generally well tolerated at all dose levels administrated in the SAD and MAD parts of this Phase 1 study.

In the study, PK parameters of systemic exposure, Cmax and AUC, increased with doses of ANPA-0073 across the dose range from 75 mg to 500 mg.

In the SAD cohorts, no SAEs and no adverse changes in laboratory tests were observed. Among the AEs reported, five were considered moderate treatment emergent adverse events and the remaining were mild in severity. AEs did not result in any early terminations or subject discontinuations from participation in this study. No trial stopping criteria were met and no significant changes or trends in hematology, blood

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chemistries, vital signs or electrocardiogram (“ECG”) measurements were noted. The following table shows all TEAEs that were reported:

ANPA-0073 Phase 1 SAD Treatment Emergent Adverse Events

In the MAD portion of the Phase 1 study, no SAEs and no adverse changes in laboratory tests were observed. Among the AEs reported, twelve were considered moderate TEAEs and the remaining were mild in severity. AEs did not result in any early terminations or subject discontinuations from participation in this study. No trial stopping criteria were met and no significant changes or trends in hematology, blood chemistries, vital signs or ECG measurements were noted. The following table shows all TEAEs that were reported:

ANPA-0073 Phase 1 MAD Treatment Emergent Adverse Events

We will initiate the 26-week chronic GLP-toxicology studies in rats and 39-week studies in dogs that we believe will be required by regulatory agencies to continue dosing beyond 13 weeks in Phase 2. We are also evaluating ANPA-0073 for selective or muscle-sparing weight loss.

Intellectual Property

Our success depends in part on our ability to obtain and maintain proprietary protection for our product candidates and other discoveries, inventions, trade secrets and know-how that are critical to our business operations. Our success also depends in part on our ability to operate without infringing the proprietary rights of others, and in part on our ability to prevent others from infringing our proprietary rights. A comprehensive

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discussion on risks relating to intellectual property is provided under Part I. Item 1A. “Risk Factors—Risks Related to Our Intellectual Property.”

For our GLP-1R program, as of December 31, 2023, our wholly-owned subsidiary Gasherbrum Bio, Inc., is the sole owner of one granted U.S. patent and 11 pending U.S. patent applications, 14 Patent Cooperation Treaty (“PCT”), applications, and 94 pending foreign patent applications in Argentina, the African Regional Intellectual Property Organization (“ARIPO”), Australia, Brazil, Canada, Chile, the People’s Republic of China (“PRC”), Colombia, Costa Rica, Dominican Republic, Egypt, the Eurasian Patent Office (the “EAPO”), the European Patent Office (the “EPO”), Guatemala, Hong Kong, Indonesia, Israel, India, Japan, South Korea, Mexico, Malaysia, New Zealand, Panama, Peru, Philippines, Saudi Arabia, Singapore, Thailand, Taiwan, Ukraine, Vietnam, and South Africa. These patent applications, to the extent they issue (or in the case of priority applications, if issued from future non-provisional applications that we file), are expected to expire between 2041 and 2044, without accounting for potentially available patent term adjustments or extensions. These patent applications relate to compositions of matter of heterocyclic GLP-1 agonists, including GSBR-1290 and its analogs, solid forms and methods of treating conditions associated with GLP-1R activity. We intend to strengthen the patent protection of our product candidates and other discoveries, inventions, trade secrets and know-how that are critical to our business operations through additional patent application filings.

For our oral small molecule APJR program, as of December 31, 2023, our wholly-owned subsidiary Annapurna Bio, Inc. is the sole owner of two granted U.S. patents and three pending U.S. patent applications, one PCT application, one granted European patent and 24 pending foreign patent applications in Argentina, Australia, Brazil, Canada, the PRC, the EAPO, the EPO, Hong Kong, Israel, India, Japan, South Korea, Mexico, New Zealand, Singapore, Taiwan, and South Africa relating to compounds and compositions of matter for treating conditions associated with Apelin receptor activity, including ANPA-0073 and its analogs, solid forms and methods of treating conditions associated with Apelin receptor activity. Any patents issuing from these patent applications (or in the case of priority applications, if issued from future non-provisional applications that we file) are expected to expire between 2039 and 2043, without accounting for potentially available patent term adjustments or extensions.

For our LPA1R program, as of December 31, 2023, our wholly-owned subsidiary Lhotse Bio, Inc. (“Lhotse”) is the sole owner of three pending U.S. patent applications, four PCT applications and seven pending foreign patent applications in Argentina, the PRC, the EPO, Japan, and Taiwan relating to compounds and compositions of matter for treating conditions associated with LPA receptor activity, including LTSE-2578 and its analogs, and methods of treating conditions associated with LPA receptor activity. Any patents issuing from these patent applications (or in the case of priority applications, if issued from future non-provisional applications that we file) are expected to expire between 2041 and 2044, without accounting for potentially available patent term adjustments or extensions.

For our oral small molecule Amylin program, as of December 31, 2023, our wholly-owned subsidiary Aconcagua Bio, Inc. (“Aconcagua”) is the sole owner of two PCT applications relating to compounds and compositions of matter for treating conditions associated with Amylin receptor activity and methods of treating conditions associated with Amylin receptor activity. Any patents issuing from these patent applications (or in the case of priority applications, if issued from future non-provisional applications that we file) are expected to expire in 2044, without accounting for potentially available patent term adjustments or extensions.

In addition to patent protection, we also rely on trade secrets, know-how, trademarks, other proprietary information and continuing technological innovation to develop and maintain our competitive position. We seek to protect and maintain the confidentiality of proprietary information to protect aspects of our business that are not amenable to, or that we do not consider appropriate for, patent protection. Although we take steps to protect our proprietary information and trade secrets, including through contractual means with our employees and consultants, third parties may independently develop substantially equivalent proprietary information and techniques or otherwise gain access to our trade secrets or disclose our technology. Thus, we may not be able to meaningfully protect our trade secrets. It is our policy to require our employees, consultants, outside scientific collaborators, sponsored researchers and other advisors to execute confidentiality agreements upon the commencement of employment or consulting relationships with us.

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However, such confidentiality agreements can be breached, and we may not have adequate remedies for any such breach. For more information regarding the risks related to our intellectual property, see Part I. Item 1A. “Risk Factors — Risks Related to Our Intellectual Property.”

Lhotse Collaboration Agreement with Schrödinger, LLC

In October 2020, Lhotse, our wholly-owned subsidiary, entered into a collaboration agreement with Schrödinger (the “Lhotse-Schrödinger Agreement”) to discover and develop novel, orally bioavailable, small molecule inhibitors of LPA1R. Under the Lhotse-Schrödinger Agreement, Schrödinger is obligated to provide computational modeling and design support, including by using its technology platform to perform virtual screens, and Lhotse is obligated to provide day-to-day chemistry and biology support. Pursuant to the Lhotse-Schrödinger Agreement, a joint steering committee comprised of representatives from both parties oversees the research performed under the agreement. During the term of the Lhotse-Schrödinger Agreement and for a specified period thereafter while Lhotse is engaged in active development of any compound having activity against LPA1R that is discovered or developed under the Lhotse-Schrödinger Agreement, Schrödinger is obligated to work exclusively with Lhotse on the design, research, development and commercialization of compounds that inhibit LPA1R. Lhotse will solely own the research results, work product, inventions and other intellectual property generated under the Lhotse-Schrödinger Agreement that are directed to LPA1R.

Under the Lhotse-Schrödinger Agreement, Lhotse is obligated to pay Schrödinger a quarterly active program payment in the low six digits for each successive three-month period during which Schrödinger continues to perform research work as agreed by the parties, and as of December 31, 2023, we have paid to Schrödinger an aggregate of $0.8 million. If Lhotse develops and commercializes a product containing a compound (“Collaboration Compound”) that is discovered or developed under the Lhotse-Schrödinger Agreement (“Collaboration Product”), Lhotse is obligated to pay Schrödinger development and regulatory milestone payments of up to an aggregate of $17.0 million, regardless of the number of Collaboration Products that reach such milestones. Lhotse will also be obligated to pay Schrödinger tiered royalties in the low single digit range on aggregate worldwide net sales of all Collaboration Products, subject to specified reductions and offsets. Lhotse’s obligation to pay royalties to Schrödinger will expire on a Collaboration Product-by-Collaboration Product and country-by-country basis on the later of (i) the expiration of the last-to-expire Lhotse owned patent claim covering the composition of matter of the Collaboration Compound contained in such Collaboration Product in such country, (ii) the expiration of regulatory, pediatric, orphan drug, or data exclusivity with respect to such Collaboration Product in such country, and (iii) ten years after the first commercial sale of such Collaboration Product in such country (“Royalty Term”).

Unless terminated earlier, the Lhotse-Schrödinger Agreement will continue for three years, subject to extension by mutual written agreement of the parties. Either party may terminate the Lhotse-Schrödinger Agreement for the other party’s uncured material breach, subject to certain notice and cure periods, or for the other party’s bankruptcy or insolvency. Lhotse’s obligation to make milestone and royalty payments (subject to the Royalty Term) to Schrödinger continues after the expiration or termination of the Lhotse-Schrödinger Agreement.

Aconcagua Collaboration Agreement with Schrödinger

In November 2023, Aconcagua, our wholly-owned subsidiary, entered into a collaboration agreement (the “Aconcagua-Schrödinger Agreement”) with Schrödinger to discover and develop novel, small molecule modulators of a specific target. Under the Aconcagua-Schrödinger Agreement, Schrödinger is obligated to provide computational modeling and design support, including by using its technology platform to perform virtual screens, and Aconcagua is obligated to provide day-to-day chemistry and biology support. Pursuant to the Aconcagua-Schrödinger Agreement, a joint steering committee comprised of representatives from both parties oversees the research performed under the agreement. During the term of the Aconcagua-Schrödinger Agreement or if longer, for a specified number of years after the effective date of the Aconcagua-Schrödinger Agreement, Schrödinger is obligated, subject to certain exceptions, to work exclusively with Aconcagua on the design, research, development and commercialization of compounds that inhibit the target. Aconcagua will solely own the research results, work product, inventions and other intellectual property

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generated under the Aconcagua-Schrödinger Agreement other than improvements to Schrödinger’s background intellectual property.

During the term of the Aconcagua-Schrödinger Agreement, Aconcagua is obligated to pay Schrödinger a monthly active program payment in the low six digits, which payment includes fees payable for certain Schrödinger software employed in the Collaboration, and as of December 31, 2023, we have paid to Schrödinger an aggregate of $0.3 million. If Aconcagua develops and commercializes a product containing a compound (“Aconcagua Collaboration Compound”) that is discovered or developed under the Aconcagua-Schrödinger Agreement or a derivative thereof (“Aconcagua Collaboration Product”), Aconcagua is obligated to pay Schrödinger development, regulatory and commercialization milestone payments of up to an aggregate of $89.0 million for the first Aconcagua Collaboration Product to achieve a particular milestone event, regardless of the number of Aconcagua Collaboration Products that reach such milestones. Aconcagua will also be obligated to pay Schrödinger tiered royalties in the low single digit range on aggregate worldwide net sales of all Aconcagua Collaboration Products, subject to specified reductions and offsets. Aconcagua’s obligation to pay royalties to Schrödinger will expire on a Aconcagua Collaboration Product-by- Aconcagua Collaboration Product and country-by-country basis on the later of (i) the expiration of the last-to-expire Aconcagua owned patent claim covering the composition of matter of the Aconcagua Collaboration Compound contained in such Aconcagua Collaboration Product in such country and (ii) ten years after the first commercial sale of such Aconcagua Collaboration Product in such country (“Aconcagua Royalty Term”).

Unless terminated earlier, the Aconcagua-Schrödinger Agreement will continue for three years, subject to extension by mutual written agreement of the parties. Either party may terminate the Aconcagua-Schrödinger Agreement for convenience after a specified period or for the other party’s uncured material breach. Aconcagua’s obligation to make milestone and royalty payments (subject to the Aconcagua Royalty Term) to Schrödinger continues after the expiration or termination of the Aconcagua-Schrödinger Agreement, unless the Aconcagua-Schrödinger Agreement is terminated under specified circumstances.

Manufacturing

We do not own or operate manufacturing facilities for the production of our product candidates and currently have no immediate plans to build our own clinical or commercial scale manufacturing capabilities. We currently engage with third-party contract manufacturing organizations (“CMOs”) in multiple geographies for the manufacture of our product candidates. We rely on and expect to continue to engage third-party manufacturers for the production of both drug substance and finished drug product. We currently obtain our supplies from these manufacturers on a purchase order basis and do not have long-term supply arrangements in place. Should any of these manufacturers become unavailable to us for any reason, we believe that there are a number of potential replacements.

Competition

The biotechnology and pharmaceutical industries are characterized by rapid evolution of technologies, fierce competition and strong defense of intellectual property. While we believe that our platform and our knowledge, experience and scientific resources provide us with competitive advantages, we face competition from major pharmaceutical and biotechnology companies, academic institutions, governmental agencies and public and private research institutions, among others.

If any of our product candidates are approved for the indications for which we expect to conduct clinical trials, they will compete with the foregoing therapies and currently marketed drugs, as well as any drugs potentially in development. It is also possible that we will face competition from other pharmaceutical approaches as well as other types of therapies. The key competitive factors affecting the success of all our programs, if approved, are likely to be their efficacy, safety, convenience, price, level of generic competition, and availability of reimbursement.

Despite significant biopharmaceutical industry investment, no oral small molecule therapy targeting GLP-1R has been approved for the treatment of diabetes or obesity. We are aware of GLP-1R small molecules in

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development by Eccogene (licensed by Astrazeneca in November 2023) Carmot Therapeutics (acquired by Roche in January 2024), Terns Pharmaceuticals, Pfizer, Eli Lilly, and Qilu Regor Therapeutics Inc. There are currently approved GLP-1R peptides for the Pfizer, Eli Lilly, and Qilu Regor Therapeutics Inc. There are currently approved GLP-1R peptides for the treatment of diabetes and obesity marketed by Novo Nordisk, Eli Lilly, AstraZeneca, and Sanofi. We are aware of other GLP-1R plus dual/tri incretin targeting peptides in development by Eli Lilly, Jiangsu Hansoh Pharmaceutical Group Co., Ltd., Boehringer Ingelheim, Altimmune, Inc., Carmot Therapeutics, Inc., and Sciwind Biosciences Co., Ltd. In addition, there are a number of companies developing product candidates for diabetes and obesity utilizing approaches with different mechanisms of action, including but not limited to sodium-glucose cotransporter-2 inhibitors.

We are aware of APJR targeted product candidates in development for COVID-19 acute respiratory distress syndrome by CohBar, Inc.; IPF, systemic sclerosis interstitial lung disease, and kidney nephrotic syndrome by Apie Therapeutics; and muscle atrophy by BioAge Labs, Inc. Both Amgen and Bristol Myers Squibb (“BMS”) have APJR targeted product candidates for heart failure. In addition, there are a number of companies developing product candidates for PAH utilizing approaches with different mechanisms of action, including but not limited to FibroGen, Inc., Galapagos NV, Galecto, Inc., Pliant Therapeutics, Inc., Gilead Sciences, Inc., Roche Holding AG and Boehringer Ingelheim.

We are aware of LPA1R targeted product candidates in development for IPF by BMS, Horizon Therapeutics plc (acquired by Amgen in October 2023), and DJS Antibodies Ltd; and myelin restoration and neuroinflammation by Pipeline Therapeutics. In addition, there are a number of companies developing product candidates for IPF utilizing approaches with different mechanisms of action, including Roche Holding AG and Boehringer Ingelheim.

Many of our current or potential competitors, either alone or with their collaboration partners, have significantly greater financial resources and expertise in research and development, manufacturing, preclinical testing, conducting clinical trials, obtaining regulatory approvals, and marketing approved products than we do. These competitors also compete with us in recruiting and retaining qualified scientific and management personnel and establishing clinical trial sites and patient registration for clinical trials, as well as in acquiring technologies complementary to, or necessary for, our programs. Mergers and acquisitions in the biopharmaceutical industries may result in even more resources being concentrated among a smaller number of our competitors. Smaller or early-stage companies may also prove to be significant competitors, particularly through collaborative arrangements with large and established companies.

Our commercial opportunity 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 any products that we may develop. Our competitors also may obtain FDA or other applicable regulatory approval for their products more rapidly than we may obtain approval for ours, which could result in our competitors establishing a strong market position before we are able to enter the market. In addition, our ability to compete may be affected in many cases by insurers or other third-party payors seeking to encourage the use of generic products. There are generic products currently on the market for certain of the indications that we are pursuing and additional products are expected to become available on a generic basis over the coming years. If our product candidates are approved, we expect that they will be priced at a significant premium over competitive generic products.

Data Privacy and Security Laws

Numerous state, federal and foreign laws, regulations and standards govern the collection, use, access to, confidentiality and security of health-related and other personal or sensitive information, and could apply now or in the future to our operations or the operations of our partners. In the United States, numerous federal and state laws and regulations, including data breach notification laws, health information privacy and security laws and consumer protection laws and regulations govern the collection, use, disclosure, and protection of health-related and other personal information. In addition, certain foreign laws govern the privacy and security of personal data, including health-related data. For example, the European Union General Data Protection Regulation (“EU GDPR”) imposes strict requirements for processing the personal data of individuals within

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the European Economic Area (“EEA”). Companies that must comply with the EU GDPR face increased compliance obligations and risk, including more robust regulatory enforcement of data protection requirements and potential fines for noncompliance of up to €20 million or 4% of the annual global revenues of the noncompliant company, whichever is greater. Further, from January 1, 2021, companies have had to comply with the GDPR and also the United Kingdom (“UK”) GDPR (“UK GDPR”) which, together with the amended UK Data Protection Act 2018, retains the GDPR in UK national law. The UK GDPR mirrors the fines under the GDPR relating to fines up to the greater of £17.5 million or 4% of global turnover. Privacy and security laws, regulations, and other obligations are constantly evolving, may conflict with each other to complicate compliance efforts, and can result in investigations, proceedings, or actions that lead to significant civil and/or criminal penalties and restrictions on data processing.

Regulation

Government Regulation of Pharmaceutical Product Development and Approval

U.S. Regulation of Pharmaceutical Product Development and Approval

In the United States, the FDA regulates drugs under the Federal Food, Drug, and Cosmetic Act (“FDCA”) and its implementing regulations. Drugs are also subject to other federal, state and local statutes and regulations. The process of obtaining marketing approvals and the subsequent compliance with appropriate federal, state and local rules and regulations requires the expenditure of substantial time and financial resources. Our drug candidates must be approved by the FDA through the NDA process before they may be legally marketed in the United States. The process required by the FDA before a drug may be marketed in the United States generally involves the following:

● review by an FDA advisory committee, where appropriate or if applicable;

Preclinical Studies and Clinical Trials

The preclinical development stage generally involves synthesizing the active component, developing the formulation and determining the manufacturing process, evaluating purity and stability, as well as carrying out

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non-human toxicology, pharmacology and drug metabolism studies in the laboratory, which support subsequent clinical testing. The conduct of the preclinical tests must comply with federal regulations, including GLPs where applicable. 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. An IND is a request for authorization from the FDA to administer an investigational drug product to humans. The central focus of an IND submission is on the general investigational plan and the protocol(s) for human trials. The IND automatically becomes effective 30 days after receipt by the FDA, unless the FDA raises concerns or questions regarding the proposed clinical trials and places the IND on clinical hold within that 30-day time period. In such a case, the IND sponsor and the FDA must resolve any outstanding concerns or questions before the clinical trial can begin. Some long-term preclinical testing, such as animal tests of reproductive adverse events and carcinogenicity, may continue after the IND is submitted. 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, submission of an IND does not guarantee the FDA will allow clinical trials to begin, or that, once begun, issues will not arise that could cause the trial to be suspended or terminated.

The clinical stage of development involves the administration of the drug product to human subjects or patients under the supervision of qualified investigators, generally physicians not employed by or under the trial sponsor’s control, in accordance with GCPs, which establish standards for conducting, recording data from, and reporting the results of clinical trials, and are intended to assure that the rights, safety, and well-being of study participants are protected. GCPs also include the requirement that all research subjects provide their informed consent in writing for their participation in any clinical trial. Clinical trials are conducted under written study 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 and assess efficacy. Each protocol, and any subsequent amendments to the protocol, must be submitted to the FDA as part of the IND. A separate submission to the existing IND must be made for each successive clinical trial conducted during product development and for any subsequent protocol amendments. While the IND is active and before approval, progress reports summarizing the results of the clinical trials and nonclinical studies performed since the last progress report must be submitted at least annually to the FDA, and written IND safety reports must be submitted to the FDA and investigators for serious and unexpected suspected adverse events, findings from other studies suggesting a significant risk to humans exposed to the same or similar drugs, findings from animal or in vitro testing suggesting a significant risk to humans, and any clinically important increased incidence of a serious suspected adverse reaction compared to that listed in the protocol or investigator brochure.

Further, each clinical trial must be reviewed and approved by 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 reviews and approves the informed consent form that must be provided to each clinical trial subject or his or her legal representative and must monitor the clinical trial until completed. Some studies also include oversight by an independent group of qualified experts organized by the clinical trial sponsor, known as a data safety monitoring board, which provides authorization for whether or not a study may move forward at designated check points based on access to certain data from the study and may halt the clinical trial if it determines that there is an unacceptable safety risk for subjects or other grounds, such as no demonstration of efficacy. Depending on its charter, this group may determine whether a trial may move forward at designated check points based on access to certain data from the trial. There are also requirements governing the reporting of ongoing clinical trials and completed clinical trial results to public registries.

Clinical trials are generally conducted in three sequential phases that may overlap or be combined, known as Phase I, Phase II and Phase III clinical trials.

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Post-approval trials, sometimes referred to as Phase IV clinical trials, may be conducted after initial marketing approval. These trials are used to gain additional experience from the treatment of patients in the intended therapeutic indication. In certain instances, the FDA may mandate the performance of Phase IV clinical trials as a condition of NDA approval.

The FDA, the IRB, or the clinical trial sponsor may suspend or terminate 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, or an institution it represents, 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. Concurrent with clinical trials, companies usually complete additional animal studies and must also develop additional information about the chemistry and physical characteristics of the drug as well as finalize a process for manufacturing the drug 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, cGMPs impose extensive procedural, substantive and recordkeeping requirements to ensure and preserve the long-term stability and quality of the final drug product. 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.

NDA Submission and FDA Review Process

Assuming successful completion of all required testing in accordance with all applicable regulatory requirements, the results of non-clinical studies and of the clinical trials, together with other detailed information, including extensive manufacturing information and information on the composition of the drug and proposed labeling, are submitted to the FDA in the form of an NDA requesting approval to market the drug for one or more specified indications. Data can come from company-sponsored clinical studies intended to test the safety and effectiveness of a use of the product, or from a number of alternative sources, including studies initiated by independent investigators. Under the Prescription Drug User Fee Act, as amended (“PDUFA”) each NDA must be accompanied by an application user fee. The FDA adjusts the PDUFA user fees on an annual basis. PDUFA also imposes an annual prescription drug program fee for human drugs. Fee waivers or reductions are available in certain circumstances, including a waiver of the application fee for the first application filed by a small business. Additionally, no user fees are assessed on NDAs for products designated as orphan drugs, unless the product also includes a non-orphan indication.

The FDA conducts a preliminary review of all NDAs within the first 60 days after submission, before accepting them for filing, to determine whether they are sufficiently complete to permit substantive review The FDA may request additional information rather than accept an NDA for filing. In this event, the NDA must be resubmitted with the additional information. The resubmitted application also is subject to review before the FDA accepts it for filing. Once filed, the FDA has a goal of ten months from the filing date to complete a standard review of an NDA for a drug that is a new molecular entity. This review typically takes twelve months from the date the NDA is submitted to FDA because the FDA has approximately two months to make a “filing”

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decision after it the application is submitted. The FDA reviews the NDA to determine, among other things, whether the proposed drug is safe and effective for its intended use, and whether the drug is being manufactured in accordance with cGMP to assure and preserve the drug’s identity, strength, quality and purity.

The FDA may refer applications for novel drugs or drug candidates that present difficult questions of safety or efficacy to an advisory committee, typically a panel that includes clinicians and other experts, for review, evaluation and a recommendation as to whether the application should be approved and under what conditions. The FDA is not bound by the recommendations of an advisory committee, but it considers such recommendations carefully when making decisions.

Before approving an NDA, the FDA will conduct a pre-approval inspection of the manufacturing facilities for the new drug to determine whether they comply with cGMPs. The FDA will not approve the drug unless it determines that the manufacturing processes and facilities are in compliance with cGMP requirements and adequate to assure consistent production of the drug within required specifications. In addition, before approving an NDA, the FDA may re-analyze clinical trial data and may also audit data from clinical trials to ensure compliance with GCP requirements.

After the FDA evaluates the application, manufacturing process and manufacturing facilities where the drug product and/or its API will be produced, it may issue an approval letter or a Complete Response Letter (“CRL”) An approval letter authorizes commercial marketing of the drug with specific prescribing information for specific indications. A CRL indicates that the review cycle of the application is complete and the application is not ready for approval. A CRL usually describes all of the specific deficiencies in the NDA identified by the FDA. The CRL may require additional clinical data and/or an additional pivotal clinical trial(s), and/or other significant, expensive and time-consuming requirements related to clinical trials, preclinical studies or manufacturing. If a CRL is issued, the applicant may either resubmit the NDA, addressing all of the deficiencies identified in the letter, or withdraw the application. Even if such data and information is submitted, the FDA may ultimately decide that the NDA does not satisfy the criteria for approval.

If a drug receives marketing approval, such approval will be granted for particular indications and may be significantly limited to specific diseases, dosages, or patient populations. Further, the FDA may require that certain contraindications, warnings or precautions be included in the drug labeling or may condition the approval of the NDA on other changes to the proposed labeling, development of adequate controls and specifications, or a commitment to conduct post-market testing or clinical trials and surveillance to monitor the effects of approved drugs. For example, the FDA may require so-called Phase IV testing which involves clinical trials designed to further assess a drug’s safety and effectiveness and may require testing and surveillance programs to monitor the safety of approved drugs that have been commercialized. The FDA may also place other conditions on approvals including the requirement for a Risk Evaluation and Mitigation Strategy (“REMS”) to ensure that the benefits of a drug or biological product outweigh its risks. A REMS is a safety strategy to manage a known or potential serious risk associated with a medicine and to enable patients to have continued access to such medicines by managing their safe use, and could include medication guides, physician communication plans, or elements to assure safe use, such as restricted distribution methods, patient registries, and other risk minimization tools. Any of these limitations on approval or marketing could restrict the commercial promotion, distribution, prescription or dispensing of drugs. Drug approvals may be withdrawn for non-compliance with regulatory standards or if problems occur following initial marketing.

Pediatric Trials

Under the Pediatric Research Equity Act, an NDA or supplement thereto must contain data that are adequate to assess the safety and effectiveness of the drug product for the claimed indications in all relevant pediatric subpopulations, and to support dosing and administration for each pediatric subpopulation for which the product is safe and effective. A sponsor who is planning to submit a marketing application for a drug that includes a new active ingredient, new indication, new dosage form, new dosing regimen or new route of administration must also submit an initial Pediatric Study Plan (“PSP”) within sixty days of an end-of-Phase II

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meeting or as may be agreed between the sponsor and the FDA. The initial PSP must include an outline of the pediatric study or studies that the sponsor plans to conduct, including study objectives and design, age groups, relevant endpoints and statistical approach, or a justification for not including such detailed information, and any request for a deferral of pediatric assessments or a full or partial waiver of the requirement to provide data from pediatric studies along with supporting information. The FDA and the sponsor must reach agreement on the PSP. A sponsor can submit amendments to an agreed-upon initial PSP at any time if changes to the pediatric plan need to be considered based on data collected from preclinical studies, early phase clinical trials, and/or other clinical development programs.

Orphan Drug Designation and Exclusivity

Under the Orphan Drug Act, the FDA may designate a drug product as an “orphan drug” if it is intended to treat a rare disease or condition (generally meaning that it affects fewer than 200,000 individuals in the United States, or more in cases in which there is no reasonable expectation that the cost of developing and making a drug product available in the United States for treatment of the disease or condition will be recovered from sales of the product). A company must request orphan product designation before submitting an NDA. If the request is granted, the FDA will publicly disclose the identity of the therapeutic agent and its potential use. 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 drug designation subsequently receives the first FDA approval for a particular active ingredient for the disease for which it has such designation, the product is entitled to orphan product exclusivity, meaning that the FDA may not approve any other applications for the same product for the same indication for seven years, including a full NDA, except in certain limited circumstances, such as a showing of clinical superiority to the product with orphan drug exclusivity or if the FDA finds that the holder of the orphan drug exclusivity has not shown that it can assure the availability of sufficient quantities of the orphan drug to meet the needs of patients with the disease or condition for which the drug was designated. Orphan drug exclusivity does not prevent the FDA from approving a different drug for the same disease or condition, or the same drug for a different disease or condition. Among the other benefits of orphan drug designation are tax credits for certain research and a waiver of the NDA application user fee.

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

Post-Marketing Requirements

Following approval of a new drug, the NDA sponsor and the approved drug are subject to continuing regulation by the FDA, including, among other things, monitoring and recordkeeping activities, reporting to the applicable regulatory authorities of adverse experiences with the drug, providing the regulatory authorities with updated safety and efficacy information, drug sampling and distribution requirements, and complying with applicable promotion and advertising requirements. Modifications or enhancements to the drug or its labeling or changes of the site of manufacture are often subject to the approval of the FDA and other regulators, which may or may not be received or may result in a lengthy review process.

FDA regulations also require that approved drug products be manufactured in specific facilities identified in the approved application for marketing and in accordance with cGMP. NDA holders using contract manufacturers, laboratories or packagers are responsible for the selection and monitoring of qualified firms, and, in certain circumstances, qualified suppliers to these firms. These manufacturers must comply with cGMP regulations that require, among other things, quality control and quality assurance as well as the corresponding maintenance of records and documentation and the obligation to investigate and correct any

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deviations from cGMP. 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.

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

● fines, warning letters, or untitled letters;

● clinical holds on clinical trials;

● injunctions or the imposition of civil or criminal penalties.

The FDA closely regulates the marketing, labeling, advertising and promotion of drug 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. 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, among other things, adverse publicity, warning letters, corrective advertising and potential civil and criminal penalties. Physicians may prescribe, in their independent professional medical judgment, 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. 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. However, companies may share truthful and not misleading information that is otherwise consistent with a product’s FDA-approved labeling.

Marketing Exclusivity

Market exclusivity provisions under the FDCA can delay the acceptance by the FDA for review, or the approval, of certain marketing applications. The FDCA provides a five-year period of non-patent data exclusivity within the United States to the first applicant to obtain approval of an NDA for a new chemical entity. A drug is a new chemical entity if the FDA has not previously approved any other new drug containing the same active moiety, which is the molecule or ion responsible for the action of the drug substance. During the exclusivity period, the FDA may not accept for review an abbreviated new drug application (“ANDA”), or

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an NDA submitted under Section 505(b)(2), or 505(b)(2) NDA, submitted by another company for another drug based on the same active moiety, regardless of whether the drug is intended for the same indication as the original reference drug or for another indication, where the applicant does not own or have a legal right of reference to all the data required for approval. However, an application may be accepted for review after four years if it contains a certification of patent invalidity or non-infringement to one of the patents listed with the FDA for the reference drug.

The FDCA alternatively provides three years of marketing exclusivity for an NDA, or supplement to an existing NDA if new clinical investigations, other than bioavailability studies, that were conducted or sponsored by the applicant are deemed by the FDA to be essential to the approval of the application, such as new indications, dosages or strengths of an existing drug. This three-year exclusivity covers only the modification for which the drug received approval on the basis of the new clinical investigations and does not prohibit the FDA from approving abbreviated NDAs or 505(b)(2) NDAs for drugs containing the active agent for the original indication or condition of use.

Five-year and three-year exclusivity will not delay the submission or approval of a full NDA. However, an applicant submitting a full NDA would be required to conduct or obtain a right of reference to any preclinical studies and adequate and well-controlled clinical trials necessary to demonstrate safety and effectiveness.

Pediatric exclusivity is another type of marketing exclusivity available in the United States. Pediatric exclusivity provides for an additional six months of marketing exclusivity attached to another period of exclusivity if a sponsor conducts clinical trials in children in response to a written request from the FDA. The issuance of a written request does not require the sponsor to undertake the described clinical trials.

Other U.S. Regulatory Matters

Manufacturing, sales, promotion and other activities following drug approval are also subject to regulation by numerous regulatory authorities in addition to the FDA, including, in the United States, the Centers for Medicare & Medicaid Services (“CMS”), other divisions of the Department of Health and Human Services, the Consumer Product Safety Commission, the Federal Trade Commission, the Occupational Safety & Health Administration, the Environmental Protection Agency and state and local governments. In the United States, the activities of pharmaceutical manufacturers are subject to federal and state laws designed to prevent fraud and abuse in the healthcare industry. The laws generally limit financial interactions between manufacturers and health care providers or other participants in the healthcare industry and/or require disclosure to the government and public of such interactions. Many of these laws and regulations contain ambiguous requirements or require administrative guidance for implementation.

Pharmaceutical manufacturers are also required to provide discounts or rebates under government healthcare programs or to certain government and private purchasers in order to obtain coverage under federal healthcare programs such as Medicaid. Participation in such programs may require tracking and reporting of certain drug prices. Manufacturers are subject to fines and other penalties if such prices are not reported accurately. Drugs must meet applicable child-resistant packaging requirements under the U.S. Poison Prevention Packaging Act. Manufacturing, sales, promotion and other activities are also potentially subject to federal and state consumer protection and unfair competition laws.

The distribution of pharmaceutical drugs is subject to additional requirements and regulations, including extensive record-keeping, licensing, storage and security requirements intended to prevent the unauthorized sale of pharmaceutical drugs.

The failure to comply with regulatory requirements subjects manufacturers to possible legal or regulatory action. Depending on the circumstances, failure to meet applicable regulatory requirements can result in criminal prosecution, fines, civil monetary or other penalties, injunctions, recall or seizure of drugs, total or partial suspension of production, denial or withdrawal of product approvals, additional regulatory oversight and integrity monitoring, exclusion from participation in government healthcare programs or refusal to allow a firm to enter into supply contracts, including government contracts. In addition, even if a firm complies with

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GPCR US Equity

GPCR · 10-K · period ended 2023-12-31

Item 1. Business.

GPCR US Equity☆

GPCR · 10-K · period ended 2023-12-31

Item 1. Business.

GPCR US Equity