Filed Pursuant to Rule 424(b)(3)
Registration No. 333-280235

PROSPECTUS

Coya Therapeutics, Inc.

603,136 Shares of Common Stock

This prospectus relates to the resale of up to 603,136 shares of Coya Therapeutics, Inc. (the “Company,” “we,” “our,” or “us”) common stock, par value $0.0001 per share (“common stock”), by the selling stockholder listed in this prospectus or its permitted transferees. The shares of common stock registered for resale pursuant to this prospectus include 603,136 shares of common stock (the “Shares”) issued in a private placement (the “Private Placement”) pursuant to a Securities Purchase Agreement entered into on May 17, 2024 with the selling stockholder named herein (the “Securities Purchase Agreement”).

We will not receive any of the proceeds from the sale of shares by the selling stockholder. The selling stockholder, or its permitted transferees or other successors-in-interest, may sell the Shares in a number of different ways and at varying prices. See “Plan of Distribution” on page 13 of this prospectus for more information on how the selling stockholder may sell the Shares pursuant to this prospectus. The selling stockholder may be an “underwriter” within the meaning of Section 2(a)(11) of the Securities Act of 1933, as amended (the “Securities Act”).

We will pay the expenses incurred in registering the resale of the Shares, including legal and accounting fees. See “Plan of Distribution” on page 13 of this prospectus.

We may amend or supplement this prospectus from time to time by filing amendments or supplements as required. You should read the entire prospectus and any amendments or supplements carefully before you make your investment decision.

We are an “emerging growth company” as defined in Section 2(a) of the Securities Act, and we have elected to comply with certain reduced public company reporting requirements.

Our common stock is listed on the Nasdaq Capital Market under the symbol “COYA.” The last reported sale price for our common stock on June 21, 2024 as quoted on the Nasdaq Capital Market was $6.05 per share.

Investing in our securities involves a high degree of risk. See “Risk Factors” beginning on page 9 of this prospectus and the documents incorporated by reference into this prospectus for a discussion of the risks that you should consider in connection with an investment in our securities.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

The date of this prospectus is June 21, 2024.

TABLE OF CONTENTS

	Page
ABOUT THIS PROSPECTUS		1
CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS		2
PROSPECTUS SUMMARY		4
THE OFFERING		7
RISK FACTORS		9
DESCRIPTION OF THE TRANSACTION		10
SELLING STOCKHOLDER		11
USE OF PROCEEDS		12
PLAN OF DISTRIBUTION		13
DESCRIPTION OF SECURITIES		15
LEGAL MATTERS		20
EXPERTS		20
WHERE YOU CAN FIND MORE INFORMATION		20
INCORPORATION OF CERTAIN INFORMATION BY REFERENCE		20

ABOUT THIS PROSPECTUS

Neither we nor the selling stockholder has authorized anyone to provide you with any information other than that contained in, or incorporated by reference into, this prospectus. We take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. This prospectus is an offer to sell only the shares of our common stock offered hereby, but only under circumstances and in jurisdictions where it is lawful to do so. You should not assume that the information contained in or incorporated by reference in this prospectus is accurate as of any date other than their respective dates. Our business, financial condition, results of operations and prospects may have changed since those dates.

A prospectus supplement may add to, update or change the information contained in this prospectus. You should read both this prospectus and any applicable prospectus supplement together with additional information described below under the heading “Where You Can Find Additional Information.”

Throughout this prospectus, when we refer to the selling stockholder, we are referring to the selling stockholder identified in this prospectus and, as applicable, its permitted transferees or other successors-in-interest that may be identified in a supplement to this prospectus or, if required, a post-effective amendment to the registration statement of which this prospectus is a part.

This prospectus contains summaries of certain provisions contained in some of the documents described herein, but reference is made to the actual documents for complete information. All of the summaries are qualified in their entirety by the actual documents. Copies of some of the documents referred to herein have been filed, will be filed or will be incorporated by reference as exhibits to the registration statement of which this prospectus is a part, and you may obtain copies of those documents as described below under the heading “Where You Can Find Additional Information.”

In this prospectus, unless otherwise stated or unless the context otherwise requires, references to “Coya,” “Company,” “we,” “us,” “our” or similar references mean Coya Therapeutics, Inc.

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CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus and any documents we incorporate by reference, contain certain forward-looking statements that involve substantial risks and uncertainties. All statements contained in this prospectus and any documents we incorporate by reference, other than statements of historical facts, are forward-looking statements including statements regarding our strategy, future operations, future financial position, future revenue, projected costs, prospects, plans, objectives of management and expected market growth. These statements involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements.

The words “anticipate,” “believe,” “estimate,” “expect,” “intend,” “may,” “plan,” “predict,” “project,” “target,” “potential,” “will,” “would,” “could,” “should,” “continue” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. These forward-looking statements include, among other things, statements about:

• We are a clinical-stage biopharmaceutical company with no product(s) approved for commercial sale.

• We rely on our license agreements to provide certain intellectual property rights relating to autologous regulatory Treg technology. If the license is terminated, we could lose the use of rights material to the development of our product candidates.

• We have incurred significant losses since inception. We expect to continue to incur losses for the foreseeable future, and we may not generate sufficient revenue to achieve or maintain profitability.

• The audit report with respect to our financial statements contains a paragraph expressing substantial doubt about our ability to continue as a going concern.

• We will need to raise significant additional capital, which may not be available to us on acceptable terms, or at all. If we are unable to successfully raise additional capital, our future clinical trials and product development could be limited and our long-term viability may be threatened.

• If we issue additional securities in the future, including issuances of shares of common stock upon exercise of our outstanding options and warrants, our existing stockholders will be diluted and our stock price may be negatively affected.

• We may encounter substantial delays in our planned clinical trials, or may not be able to conduct or complete our clinical trials on the timelines we expect, if at all.

• We do not currently own, lease or operate a principal laboratory, research and development or manufacturing facility of our own. We currently collaborate with various research institutions to perform these activities, including The Methodist Hospital in Houston, Texas. Establishing our own facilities would result in significant additional expense and may result in potential delays in testing and production.

• Any clinical trials that are planned or are conducted on our product candidates may fail. Clinical trials are lengthy, complex and extremely expensive processes with uncertain outcomes and results and frequent failures.

• Our dependence on third parties to manufacture our product candidates may increase the risk that preclinical development, clinical development and potential commercialization of our product candidates could be delayed, prevented or impaired.

• Our business is subject to, and may be affected by, extensive and costly government regulation.

• We may not obtain approval for our products and any product for which we obtain required regulatory marketing authorization could be subject to post-approval regulation, and we may be subject to penalties if we fail to comply with such post-approval requirements.

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• Even if we obtain regulatory approval to market our product candidates, our product candidates may not be accepted by the market.

• We face competition from companies that have greater resources than we do, and we may not be able to effectively compete against these companies.

• If others claim we are infringing on the intellectual property rights of third parties, we may be subject to costly and time-consuming litigation.

• Other risks and uncertainties, including those listed in the “Risk Factors” section of this prospectus and the documents incorporated by reference herein.

These forward-looking statements are only predictions and we may not actually achieve the plans, intentions or expectations disclosed in our forward-looking statements, so you should not place undue reliance on our forward-looking statements. Actual results or events could differ materially from the plans, intentions and expectations disclosed in the forward-looking statements we make. We have based these forward-looking statements largely on our current expectations and projections about future events and trends that we believe may affect our business, financial condition and operating results. We have included important factors in the cautionary statements included in this prospectus, as well as certain information incorporated by reference into this prospectus, that could cause actual future results or events to differ materially from the forward-looking statements that we make. Our forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, joint ventures or investments we may make.

Discussions containing these forward-looking statements may be found, among other places, in the sections titled “Business,” “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” incorporated by reference from the Annual Report on Form 10-K for the fiscal year ended December 31, 2023 filed with the Securities and Exchange Commission (the “SEC”) on March 19, 2024 (the “Annual Report”) and our most recent Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2024, as well as any amendments thereto, filed with the SEC. Additional factors are discussed under the caption “Risk Factors” in this prospectus and any free writing prospectus and under similar headings in the other documents that are incorporated by reference into this prospectus. New risks and uncertainties arise from time to time, and it is impossible for us to predict these events or how they may affect us. We disclaim any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as may be required by law.

You should read this prospectus with the understanding that our actual future results may be materially different from what we expect. We do not assume any obligation to update any forward-looking statements whether as a result of new information, future events or otherwise, except as required by applicable law.

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PROSPECTUS SUMMARY

This summary highlights information contained elsewhere in this prospectus. This summary does not contain all of the information that you should consider before deciding to invest in our securities. You should read this entire prospectus carefully, including the “Risk Factors” section in this prospectus and under similar captions in the documents incorporated by reference into this prospectus.

Overview

We are a clinical-stage biotechnology company focused on developing proprietary new therapies to enhance the function of regulatory T cells (“Tregs”). Tregs are a subpopulation of T-lymphocytes consisting of CD4+CD25high hFOXP3+ cells that suppress inflammatory responses. Tregs were first discovered in 1995 by Dr. Shimon Sakaguchi and since their discovery, multiple lines of research have contributed to elucidate Treg biology and its role in health and disease. Tregs and their transcription factors have been shown to be essential to maintaining cellular homeostasis by regulating autoimmune and inflammatory responses and maintaining self-tolerance in mammals. Dysfunctional Tregs underlie numerous disease states, and this cellular dysfunction is driven by the chronic inflammatory environment and high levels of oxidative stress commonly observed in certain diseases. Further, the degree of Treg dysfunction is correlated with the severity and progression of serious and life-threatening conditions. These and other recent advances in the understanding of Treg biology, have made this subset of T-lymphocytes an important potential therapeutic target, which we believe may provide new treatments for serious diseases.

We have built a diversified product candidate pipeline that includes both ex vivo and in vivo approaches intended to restore the suppressive and immunomodulatory functions of Tregs. Our product candidate pipeline is based on our three distinct potential therapeutic modalities: Treg-enhancing biologics, Treg-derived exosomes, and autologous Treg cell therapy. “Autologous” means the treatment of a patient with human cells derived from the patient itself, whereas “Allogeneic” means the treatment of a patient with human cells derived from a donor other than the patient, where such donor is genetically non-identical. Our core focus is to develop these therapies to target Treg dysfunction, which has been identified to be an important pathophysiological component of neurodegenerative, autoimmune, and metabolic diseases, where new and effective therapies are urgently needed.

Our lead asset, COYA 302, is a Treg-enhancing biologic, which has been developed from key learnings established in our early work and discoveries of our autologous Treg cell therapy asset. Our autologous Treg cell therapy program has completed a Phase 1 and Phase 2a studies in amyotrophic lateral sclerosis, or ALS. We believe the clinical data from these initial studies served as an important confirmation of the underlying immunomodulatory properties of Tregs and their potential therapeutic benefits. These studies have also significantly expanded our own foundational knowledge of the biological activity of Tregs and key biomarkers of disease progression and drug effect, which we believe will be critical for the design of our future clinical and preclinical studies, the selection of future targeted diseases and the overall advancement of our development pipeline. We believe our findings have also established mechanistic benefits of combination biologics to address Treg dysfunction as well as highlighted important advantages of scalability and cost.

COYA 302 is the combination of our proprietary low dose interleukin-2 (COYA 301, or LD IL-2) and the immunomodulatory drug CTLA4-Ig, and we believe this combination has the potential to provide a sustained and durable effect on our first series of indications (neurodegenerative disorders) through targeting of multiple pathways. Our research and clinical efforts have led us to believe that combination biologics using our LD IL-2 as a backbone modality could be the best way to treat neurodegenerative conditions that are inherently driven by a complexity of pathways. We believe COYA 302 represents the most clinically advanced of what we hope will be a family of combination therapies that all feature our LD IL-2. Moreover, given its growing list of indications, we can now refer to COYA 302 as a “Pipeline in a Product.”

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Our operations have consisted of developing our clinical and preclinical product candidates and we have devoted substantially all of our resources to developing product and technology rights, conducting research and development, organizing and staffing our company, business planning and raising capital. We have funded our operations primarily through private convertible preferred stock offerings, a convertible debt financing, the public offering of our securities that closed in January 2023 and private securities offerings. Our net losses were $5.1 million and $2.7 million for the three months ended March 31, 2024 and 2023, respectively. As of March 31, 2024, we had an accumulated deficit of $30.9 million. Our primary use of cash is to fund operating expenses, which consist primarily of research and development expenditures, and to a lesser extent, general and administrative expenditures. Our ability to generate product revenue sufficient to achieve profitability will depend heavily on the successful development and eventual commercialization of one or more of our current or future product candidates.

We expect to continue to incur significant expenses and operating losses for the foreseeable future as we advance our product candidates through all stages of development and clinical trials and, ultimately, seek regulatory approval. In addition, if we obtain marketing approval for any of our product candidates, we expect to incur significant commercialization expenses related to product manufacturing, marketing, sales and distribution. We expect our expenses and capital requirements will increase significantly in connection with our ongoing activities as we:

• continue our ongoing and planned research and development of our product candidates;

• initiate nonclinical studies and clinical trials for any additional product candidates that we may pursue;

• continue to scale up external manufacturing capacity with the aim of securing sufficient quantities to meet our capacity requirements for clinical trials and potential commercialization;

• establish a sales, marketing and distribution infrastructure to commercialize any approved product candidates and related additional commercial manufacturing costs;

• develop, maintain, expand, protect and enforce our intellectual property portfolio, including patents, trade secrets and know-how;

• acquire or in-license other product candidates and technologies;

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

• incur additional legal, accounting, investor relations and other expenses associated with operating as a public company.

Our net losses may fluctuate significantly from quarter-to-quarter and year-to-year, depending on the timing of our clinical trials and our expenditures on other research and development activities.

We will need to raise substantial additional capital to support our continuing operations and pursue our growth strategy. Until such time as we can generate significant revenue from product sales, if ever, we plan to finance our operations through the sale of equity, debt financings or other capital sources, which may include collaborations with other companies or other strategic transactions. There are no assurances that we will be successful in obtaining an adequate level of financing as and when needed to finance our operations on terms acceptable to us or at all. Any failure to raise capital as and when needed could have a negative impact on our financial condition and on our ability to pursue our business plans and strategies. If we are unable to secure adequate additional funding, we may have to significantly delay, scale back or discontinue the development and commercialization of one or more product candidates or delay our pursuit of potential in-licenses or acquisitions.

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Recent Developments

Private Placement

On May 17, 2024, we entered into the Securities Purchase Agreement with the selling stockholder for the issuance and sale of 603,136 Shares at a price of $8.29 per Share in the Private Placement. The Private Placement closed on May 17, 2024. For additional information regarding the issuances of the Shares, see “Private Placement of the Shares” below.

Implications of Being an Emerging Growth Company

We qualify as an “emerging growth company” as defined in the Jumpstart Our Business Startups Act of 2012, or the JOBS Act. An emerging growth company may take advantage of relief from certain reporting requirements and other burdens that are otherwise applicable generally to public companies. These provisions include:

• reduced obligations with respect to financial data, including presenting only two years of audited financial statements and only two years of selected financial data in this prospectus;

• an exception from compliance with the auditor attestation requirement of Section 404 of the Sarbanes-Oxley Act of 2002, as amended, or the Sarbanes-Oxley Act;

• reduced disclosure about our executive compensation arrangements in our periodic reports, proxy statements and registration statements; and

• exemptions from the requirements of holding non-binding advisory votes on executive compensation or golden parachute arrangements.

We may take advantage of exemptions for up to five years or such earlier time that we are no longer an emerging growth company. Accordingly, the information contained herein may be different than the information you receive from other public companies in which you hold stock. We would cease to be an emerging growth company upon the earliest to occur of: (1) the last day of the fiscal year in which we have more than $1.235 billion in annual gross revenue, (2) December 31, 2026, (3) the date we are deemed to be a “large accelerated filer” as defined in the Securities Exchange Act of 1934, as amended, or the Exchange Act, and (4) the date on which we have during the previous three-year period issued more than $1.0 billion in non-convertible debt securities.

The JOBS Act also permits us, as an emerging growth company, to take advantage of an extended transition period to comply with the new or revised accounting standards applicable to public companies and thereby allow us to delay the adoption of those standards until those standards would apply to private companies. We have irrevocably elected to avail ourselves of this exemption and therefore, we will not be subject to the same new or revised accounting standards as other public companies that are not emerging growth companies.

Corporate Information

Our primary executive offices are located at 5850 San Felipe St., Suite 500, Houston, TX 77057 and our telephone number is (800) 587-8170. Our website address is www.coyatherapeutics.com. The information contained in, or accessible through, our website does not constitute a part of this prospectus. We have included our website address in this prospectus solely as an inactive textual reference.

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THE OFFERING

Registered shares of common stock offered for resale by the selling stockholder 603,136 Shares issued in the Private Placement pursuant to the Securities Purchase Agreement.

Registered shares of common stock outstanding before this offering 14,618,172 shares of common stock.

Registered shares of common stock to be outstanding after giving effect to the issuance of the shares registered hereunder 15,221,308 shares of common stock, assuming the resale of the Shares.

Use of proceeds We will not receive any of the proceeds from the sale of the Shares by the selling stockholder.

Terms of this offering The selling stockholder, including its transferees, donees, pledgees, assignees and successors-in-interest, may sell, transfer or otherwise dispose of any or all of the shares of common stock offered by this prospectus from time to time on The Nasdaq Capital Market or any other stock exchange, market or trading facility on which the shares are traded or in private transactions. The shares of common stock may be sold at fixed prices, at market prices prevailing at the time of sale, at prices related to prevailing market price or at negotiated prices.

Risk factors Investing in our common stock involves a high degree of risk. See “Risk Factors” beginning on page 9 of this prospectus and under similar headings in the other documents that are filed after the date hereof and incorporated by reference in this prospectus for a discussion of factors to consider before deciding to purchase shares of our common stock.

Nasdaq Capital Market symbol Our common stock is currently listed on the Nasdaq Capital Market under the symbol “COYA.”

The number of shares of common stock to be outstanding upon completion of this offering is based on 14,618,172 of our shares of common stock outstanding as of June 7, 2024 (which excludes the Shares issued in the Private Placement) and excludes the following:

• 319,004 shares of common stock issuable upon exercise of warrants issued to the co-placement agent and our financial advisor in connection with our private placement that closed in December 2023;

• 92,184 shares of common stock issuable upon the exercise of warrants issued in connection with the issuance of Series A convertible preferred stock;

• 182,407 shares of common stock issuable upon the exercise of warrants issued to the placement agent in connection with our issuance of convertible promissory notes;

• 1,345,825 shares of common stock issuable upon the exercise of outstanding warrants issued to investors in our initial public offering;

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• 201,803 shares of common stock issuable upon the exercise of outstanding warrants issued to the underwriters of our initial public offering;

• 145,000 shares of common stock issuable upon the exercise of outstanding warrants in connection with the exercise of over-allotment options issued to the underwriters of our initial public offering;

• 2,152,658 shares of common stock issuable upon the exercise of outstanding options issued pursuant to the Amended and Restated Coya Therapeutics, Inc. 2021 Equity Incentive Plan (the “Plan”); and

• 330,617 shares of common stock reserved for future issuance under the Plan.

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RISK FACTORS

Before purchasing any of the securities you should carefully consider the risk factors incorporated by reference in this prospectus from our Annual Report on Form 10-K for the fiscal year ended December 31, 2023 filed with the Securities and Exchange Commission (the “SEC”) on March 19, 2024 (the “Annual Report”), and any subsequent updates described in our Quarterly Reports on Form 10-Q and Current Reports on Form 8-K, as well as the risks, uncertainties and additional information set forth in our SEC reports on Forms 10-K, 10-Q and 8-K and in the other documents incorporated by reference in this prospectus. For a description of these reports and documents, and information about where you can find them, see “Where You Can Find More Information” and “Incorporation of Certain Information By Reference.” Additional risks not presently known or that we presently consider to be immaterial could subsequently materially and adversely affect our financial condition, results of operations, business and prospects.

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DESCRIPTION OF THE TRANSACTION

Private Placement of the Shares

On May 17, 2024, we entered into a Securities Purchase Agreement (the “Securities Purchase Agreement”) with the Alzheimer’s Drug Discovery Foundation (the “ADDF” or the selling stockholder) for the issuance and sale in a private placement (the “Private Placement”) of 603,136 shares of common stock at a purchase price of $8.29 per share for gross proceeds to us of $5.0 million.

Pursuant to the Securities Purchase Agreement, we agreed to file this registration statement with the Securities and Exchange Commission (“SEC”) covering the resale of the Shares no later than 30 days after the date of the Securities Purchase Agreement, and to have the registration statement declared effective as promptly as possible but in any event no later than 45 days after the date of the Securities Purchase Agreement, subject to extension under the terms of the Securities Purchase Agreement.

The Shares issued under the Securities Purchase Agreement were issued pursuant to an exemption from registration under Section 4(a)(2) of the Securities Act of 1933, as amended (the “Securities Act”), and/or Rule 506 of Regulation D, which is promulgated under the Securities Act. We relied on this exemption from registration based in part on representations made by the ADDF.

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SELLING STOCKHOLDER

The Shares being offered by the selling stockholder, or its permitted transferees, under this prospectus are those previously issued to the selling stockholder. For additional information regarding the issuances of the Shares, see “Private Placement of the Shares” above. We are registering the shares of common stock in order to permit the selling stockholder or its permitted transferees to offer the shares for resale from time to time. The term “selling stockholder” includes the stockholder listed in the table below and its permitted transferees. Except for the ownership of the Shares, the selling stockholder has not had any material relationship with us within the past three years.

The table below sets forth the selling stockholder and other information regarding the beneficial ownership of the shares of common stock by the selling stockholder. The second column lists the number of shares of common stock beneficially owned by the selling stockholder, including its ownership of the Shares, as of June 13, 2024.

The third column lists the shares of common stock being offered by this prospectus by the selling stockholder. In accordance with the terms of a registration rights agreement with the selling stockholder, this prospectus generally covers the resale of the number of Shares issued to the selling stockholder in the Private Placement as described above under “Description of the Transaction—Private Placement of the Shares;” as of the trading day immediately preceding the applicable date of determination and all subject to adjustment as provided in the registration rights agreement. The fourth column assumes the sale of all of the shares offered by the selling stockholder pursuant to this prospectus. The selling stockholder may sell all, some or none of its shares in this offering. See “Plan of Distribution.”

Maximum Number of Shares of Common Stock Owned Prior to Offering (1) (2)

Maximum Number of Shares of Common Stock to be Sold Pursuant to this Prospectus

Maximum Number of Shares of Common Stock Owned After Offering (1) (2)

Name of Selling Stockholder

Number of Shares of Common Stock

Number of Shares of Common Stock Underlying Warrants

Number of Shares of Common Stock

Number of Shares of Common Stock Underlying Warrants

Number of Shares of Common Stock

Number of Shares of Common Stock Underlying Warrants

Percent (3)

Alzheimer’s Drug Discovery Foundation

603,136

—

603,136

—

603,136

—

*

%

* Less than 1%

(1) Except as noted below, ownership is determined in accordance with the rules of the SEC and generally includes voting or investment power with respect to securities. All entries exclude ownership of shares issuable pursuant to warrants, options or other derivative securities that have not vested or that are not otherwise exercisable as of the date hereof or which will not become vested or exercisable within 60 days of June 13, 2024.

(2) Based upon our internal books and records and public filings only, as of the date of this prospectus; may not include ownership of shares of our common stock, if any, held in “street name” through unrelated third-party brokers, as of the date of this prospectus, which are not being offered for resale by this prospectus.

(3) Percentage calculations are based on 15,221,308 shares of our common stock outstanding as of June 13, 2024 and are rounded to the nearest tenth of a percent. Warrants, options or other derivative securities that are presently exercisable or exercisable within 60 days are deemed to be owned by the person holding such securities for the purpose of calculating the percentage ownership of that person but are not treated as outstanding for the purpose of calculating the percentage ownership of any other person.

Issuances of our common stock to the selling stockholder will not affect the rights or privileges of our existing stockholders, except that the economic and voting interests of each of our existing stockholders will be diluted as a result of any such issuance. Although the number of shares of common stock that our existing stockholders own will not decrease, the shares owned by our existing stockholders will represent a smaller percentage of our total outstanding shares after any such issuance to the selling stockholder identified herein.

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USE OF PROCEEDS

The Shares to be offered and sold using this prospectus will be offered and sold by the selling stockholder named in this prospectus. Accordingly, we will not receive any proceeds from any sales of the Shares in this offering. We will pay all of the fees and expenses incurred by us in connection with this registration. We will not be responsible for fees and expenses incurred by the selling stockholder or any underwriting discounts or agent’s commissions.

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PLAN OF DISTRIBUTION

Each selling stockholder of the securities and any of their pledgees, assignees and successors-in-interest may, from time to time, sell any or all of their securities covered hereby on The Nasdaq Stock Market or any other stock exchange, market or trading facility on which the securities are traded or in private transactions. These sales may be at fixed or negotiated prices. A selling stockholder may use any one or more of the following methods when selling securities:

• ordinary brokerage transactions and transactions in which the broker-dealer solicits purchasers;

• block trades in which the broker-dealer will attempt to sell the securities as agent but may position and resell a portion of the block as principal to facilitate the transaction;

• purchases by a broker-dealer as principal and resale by the broker-dealer for its account;

• an exchange distribution in accordance with the rules of the applicable exchange;

• privately negotiated transactions;

• settlement of short sales;

• in transactions through broker-dealers that agree with the selling stockholder to sell a specified number of such securities at a stipulated price per security;

• through the writing or settlement of options or other hedging transactions, whether through an options exchange or otherwise;

• a combination of any such methods of sale; or

• any other method permitted pursuant to applicable law.

The selling stockholder may also sell securities under Rule 144 or any other exemption from registration under the Securities Act, if available, rather than under this prospectus.

Broker-dealers engaged by the selling stockholder may arrange for other brokers-dealers to participate in sales. Broker-dealers may receive commissions or discounts from the selling stockholder (or, if any broker-dealer acts as agent for the purchaser of securities, from the purchaser) in amounts to be negotiated, but, except as set forth in a supplement to this Prospectus, in the case of an agency transaction not in excess of a customary brokerage commission in compliance with FINRA Rule 2121; and in the case of a principal transaction a markup or markdown in compliance with FINRA Rule 2121.

In connection with the sale of the securities or interests therein, the selling stockholder may enter into hedging transactions with broker-dealers or other financial institutions, which may in turn engage in short sales of the securities in the course of hedging the positions they assume. The selling stockholder may also sell securities short and deliver these securities to close out their short positions, or loan or pledge the securities to broker-dealers that in turn may sell these securities. The selling stockholder may also enter into option or other transactions with broker-dealers or other financial institutions or create one or more derivative securities which require the delivery to such broker-dealer or other financial institution of securities offered by this prospectus, which securities such broker-dealer or other financial institution may resell pursuant to this prospectus (as supplemented or amended to reflect such transaction).

The selling stockholder and any broker-dealers or agents that are involved in selling the securities may be “underwriters” within the meaning of the Securities Act in connection with such sales. In such event, any commissions received by such broker-dealers or agents and any profit on the resale of the securities purchased by them may be deemed to be underwriting commissions or discounts under the Securities Act. Each selling stockholder has informed the Company that it does not have any written or oral agreement or understanding, directly or indirectly, with any person to distribute the securities. The Company is required to pay certain fees

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and expenses incurred by the Company incident to the registration of the securities. The Company has agreed to indemnify the selling stockholder against certain losses, claims, damages and liabilities, including liabilities under the Securities Act.

We agreed to keep this prospectus effective until the earlier of (i) the date on which the securities may be resold by the selling stockholder without registration and without regard to any volume or manner-of-sale limitations by reason of Rule 144, without the requirement for the Company to be in compliance with the current public information requirement under Rule 144 under the Securities Act or any other rule of similar effect or (ii) all of the securities have been sold pursuant to this prospectus or Rule 144 under the Securities Act or any other rule of similar effect. The resale securities will be sold only through registered or licensed brokers or dealers if required under applicable state securities laws. In addition, in certain states, the resale securities covered hereby may not be sold unless they have been registered or qualified for sale in the applicable state or an exemption from the registration or qualification requirement is available and is complied with.

Under applicable rules and regulations under the Exchange Act, any person engaged in the distribution of the resale securities may not simultaneously engage in market making activities with respect to the common stock for the applicable restricted period, as defined in Regulation M, prior to the commencement of the distribution. In addition, the selling stockholder will be subject to applicable provisions of the Exchange Act and the rules and regulations thereunder, including Regulation M, which may limit the timing of purchases and sales of the common stock by the selling stockholder or any other person. We will make copies of this prospectus available to the selling stockholder and have informed them of the need to deliver a copy of this prospectus to each purchaser at or prior to the time of the sale (including by compliance with Rule 172 under the Securities Act).

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DESCRIPTION OF SECURITIES

The following summary of the rights of our capital stock is not complete and is subject to and qualified in its entirety by reference to our Amended and Restated Certificate of Incorporation, Amended and Restated Bylaws, copies of which are filed as exhibits to our Annual Report on Form 10-K for the year ended December 31, 2022, as amended, and forms of securities, copies of which are filed as exhibits to the registration statement of which this prospectus forms a part , which are incorporated by reference herein.

General

Our authorized capital stock consists of 200,000,000 shares of common stock, par value $0.0001 per share, and 10,000,000 shares of preferred stock, par value $0.0001 per share.

As of June 13, 2024, there were 15,221,308 shares of common stock outstanding and no shares of preferred stock outstanding.

Common Stock

Holders of shares of our common stock are entitled to one vote for each share held of record on all matters on which stockholders are entitled to vote generally, including the election or removal of directors elected by our stockholders generally. The holders of our common stock do not have cumulative voting rights in the election of directors.

Holders of shares of our common stock are entitled to receive dividends when, as and if declared by our board of directors out of funds legally available therefor subject to any statutory or contractual restrictions on the payment of dividends and to any restrictions on the payment of dividends imposed by the terms of any outstanding preferred stock.

Upon our liquidation, dissolution or winding up and after payment in full of all amounts required to be paid to creditors and to the holders of preferred stock having liquidation preferences, if any, the holders of shares of our common stock will be entitled to receive our remaining assets available for distribution on a pro rata basis.

All shares of our common stock are fully paid and non-assessable. The shares of our common stock are not subject to further calls or assessments by us. Holders of shares of our common stock do not have preemptive, subscription, redemption or conversion rights. There are no redemption or sinking fund provisions applicable to the common stock. The rights powers, preferences and privileges of our common stock are subject to those of the holders of any shares of our preferred stock or any other series or class of stock we may authorize and issue in the future.

Preferred Stock

Our board of directors has the authority, without further action by our stockholders, to issue up to 10,000,000 shares of preferred stock in one or more classes or series. Our board of directors is able to determine, with respect to any series of preferred stock, the powers (including voting powers), preferences and relative, participating, optional or other special rights, and the qualifications, limitations or restrictions thereof, including, without limitation:

• the designation of the series;

• the number of shares of the series, which our board of directors may, except where otherwise provided in the preferred stock designation, increase (but not above the total number of authorized shares of the class) or decrease (but not below the number of shares then outstanding);

• whether dividends, if any, will be cumulative or non-cumulative and the dividend rate of the series;

• the dates at which dividends, if any, will be payable;

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• the redemption or repurchase rights and price or prices, if any, for shares of the series;

• the terms and amounts of any sinking fund provided for the purchase or redemption of shares of the series;

• the amounts payable on shares of the series in the event of any voluntary or involuntary liquidation, dissolution or winding-up of our affairs;

• whether the shares of the series will be convertible into shares of any other class or series, or any other security, of us or any other entity, and, if so, the specification of the other class or series or other security, the conversion price or prices or rate or rates, any rate adjustments, the date or dates as of which the shares will be convertible and all other terms and conditions upon which the conversion may be made;

• restrictions on the issuance of shares of the same series or of any other class or series; and

• the voting rights, if any, of the holders of the series.

We could issue a series of preferred stock that could, depending on the terms of the series, impede or discourage an acquisition attempt or other transaction that some, or a majority, of the holders of our common stock might believe to be in their best interests or in which the holders of our common stock might receive a premium over the market price of the shares of our common stock. Additionally, the issuance of preferred stock may adversely affect the rights of holders of our common stock by restricting dividends on the common stock, diluting the voting power of the common stock or subordinating the liquidation rights of the common stock. As a result of these or other factors, the issuance of preferred stock could have an adverse impact on the market price of our common stock.

Anti-Takeover Effects of Our Amended and Restated Certificate of Incorporation and Amended and Restated Bylaws and Certain Provisions of Delaware Law

Our amended and restated certificate of incorporation (“Amended Charter”), Amended and Restated Bylaws (“Amended Bylaws”) and the DGCL contain provisions that are intended to enhance the likelihood of continuity and stability in the composition of our board of directors. These provisions are intended to avoid costly takeover battles, reduce our vulnerability to a hostile or abusive change of control and enhance the ability of our board of directors to maximize stockholder value in connection with any unsolicited offer to acquire us. However, these provisions may have an anti-takeover effect and may delay, deter or prevent a merger or acquisition of our company by means of a tender offer, a proxy contest or other takeover attempt that a stockholder might consider in its best interest, including those attempts that might result in a premium over the prevailing market price for the shares of common stock held by stockholders.

Potential Effects of Authorized but Unissued Stock

Pursuant to our Amended Charter, we have shares of common stock and preferred stock available for future issuance without stockholder approval. We may utilize these additional shares for a variety of corporate purposes, including future public offerings to raise additional capital, to facilitate corporate acquisitions or payment as a dividend on the capital stock.

The existence of unissued and unreserved common stock and preferred stock may enable our board of directors to issue shares to persons friendly to current management or to issue preferred stock with terms that could render more difficult or discourage a third-party attempt to obtain control of us by means of a merger, tender offer, proxy contest or otherwise, thereby protecting the continuity of our management. In addition, the board of directors has the discretion to determine designations, rights, preferences, privileges and restrictions, including voting rights, dividend rights, conversion rights, redemption privileges and liquidation preferences of each series of preferred stock, all to the fullest extent permissible under the Delaware General Corporation Law

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(the “DGCL”) and subject to any limitations set forth in our Amended Charter. The purpose of authorizing the board of directors to issue preferred stock and to determine the rights and preferences applicable to such preferred stock is to eliminate delays associated with a stockholder vote on specific issuances. The issuance of preferred stock, while providing desirable flexibility in connection with possible financings, acquisitions and other corporate purposes, could have the effect of making it more difficult for a third-party to acquire, or could discourage a third-party from acquiring, a majority of our outstanding voting stock.

Business Combinations

We are subject to Section 203 of the Delaware General Corporation Law, which prohibits a Delaware corporation from engaging in any business combination with any interested stockholder for a period of three years after the date that such stockholder became an interested stockholder, with the following exceptions:

• before such date, the board of directors of the corporation approved either the business combination or the transaction that resulted in the stockholder becoming an interested stockholder;

• upon completion of the transaction that resulted in the stockholder becoming an interested stockholder, the interested stockholder owned at least 85% of the voting stock of the corporation outstanding at the time the transaction began, excluding for purposes of determining the voting stock outstanding (but not the outstanding voting stock owned by the interested stockholder) those shares owned (i) by persons who are directors and also officers and (ii) employee stock plans in which employee participants do not have the right to determine confidentially whether shares held subject to the plan will be tendered in a tender or exchange offer; or

• on or after such date, the business combination is approved by the board of directors and authorized at an annual or special meeting of the stockholders, and not by written consent, by the affirmative vote of at least 66 2/3% of the outstanding voting stock that is not owned by the interested stockholder.

In general, Section 203 defines “business combination” to include the following:

• any merger or consolidation involving the corporation and the interested stockholder;

• any sale, transfer, pledge or other disposition of 10% or more of the assets of the corporation involving the interested stockholder;

• subject to certain exceptions, any transaction that results in the issuance or transfer by the corporation of any stock of the corporation to the interested stockholder;

• any transaction involving the corporation that has the effect of increasing the proportionate share of the stock or any class or series of the corporation beneficially owned by the interested stockholder;

• the receipt by the interested stockholder of the benefit of any loss, advances, guarantees, pledges or other financial benefits by or through the corporation.

In general, Section 203 defines an “interested stockholder” as an entity or person who, together with the person’s affiliates and associates, beneficially owns, or within three years prior to the time of determination of interested stockholder status did own, 15% or more of the outstanding voting stock of the corporation.

No Cumulative Voting

Under Delaware law, the right to vote cumulatively does not exist unless the certificate of incorporation specifically authorizes cumulative voting. Our Amended Charter does not authorize cumulative voting. Therefore, stockholders holding a majority of the shares of our stock entitled to vote generally in the election of directors will be able to elect all our directors.

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Special Stockholder Meetings

Our Amended Charter provides that special meetings of our stockholders may be called at any time only by or at the direction of the board of directors, the chairman of the board of directors or our chief executive officer. Our Amended Bylaws prohibit the conduct of any business at a special meeting other than as specified in the notice for such meeting. These provisions may have the effect of deferring, delaying, or discouraging hostile takeovers, or changes in control or management of our company.

Director Nominations and Stockholder Proposals

Our Amended Bylaws establish advance notice procedures with respect to stockholder proposals and the nomination of candidates for election as directors, other than nominations made by or at the direction of the board of directors or a committee of the board of directors. In order for any matter to be “properly brought” before a meeting, a stockholder will have to comply with advance notice requirements and provide us with certain information. Generally, to be timely, a stockholder’s notice must be received at our principal executive offices not less than 90 days nor more than 120 days prior to the first anniversary date of the immediately preceding annual meeting of stockholders. However, in the event that the date of the annual meeting is more than 30 days before or more than 70 days after the anniversary date, notice by the stockholder must be delivered not earlier than the close of business on the 120th day prior to the annual meeting and not later than the close of business on the later of the 90th day prior to the annual meeting or the 10th day following the day on which public announcement of the date of the meeting is first made by us.

Our Amended Bylaws also specify requirements as to the form and content of a stockholder’s notice. Our Amended Bylaws allow the chairman of the meeting at a meeting of the stockholders to adopt rules and regulations for the conduct of meetings that may have the effect of precluding the conduct of certain business at a meeting if the rules and regulations are not followed. These provisions may also defer, delay, or discourage a potential acquirer from conducting a solicitation of proxies to elect the acquirer’s own slate of directors or otherwise attempting to influence or obtain control of the company.

Amendment of Our Amended Charter or Amended Bylaws

The DGCL provides generally that the affirmative vote of a majority of the shares entitled to vote on any matter is required to amend a corporation’s certificate of incorporation or bylaws, unless a corporation’s certificate of incorporation or bylaws, as the case may be, requires a greater percentage. Our Amended Bylaws may be amended or repealed by a majority vote of our board of directors or by the affirmative vote of the holders of at least 66 2/3% of the votes which all our stockholders would be entitled to cast in any annual election of directors. In addition, the affirmative vote of the holders of at least 66 2/3% of the votes which all our stockholders would be entitled to cast in any election of directors will be required to amend or repeal or to adopt any provisions inconsistent with any of the provisions of our certificate described above.

The foregoing provisions of our Amended Charter and Amended Bylaws could discourage potential acquisition proposals and could delay or prevent a change in control. These provisions are intended to enhance the likelihood of continuity and stability in the composition of our board of directors and in the policies formulated by our board of directors and to discourage certain types of transactions that may involve an actual or threatened change of control. These provisions are designed to reduce our vulnerability to an unsolicited acquisition proposal. The provisions also are intended to discourage certain tactics that may be used in proxy fights. However, such provisions could have the effect of discouraging others from making tender offers for our shares and, as a consequence, they also may inhibit fluctuations in the market price of our shares of common stock that could result from actual or rumored takeover attempts. Such provisions also may have the effect of preventing changes in our management or delaying or preventing a transaction that might benefit you or other minority stockholders.

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Dissenters’ Rights of Appraisal and Payment

Under the DGCL, with certain exceptions, our stockholders will have appraisal rights in connection with a merger or consolidation of us. Pursuant to the DGCL, stockholders who properly request and perfect appraisal rights in connection with such merger or consolidation will have the right to receive payment of the fair value of their shares as determined by the Delaware Court of Chancery.

Stockholders’ Derivative Actions

Under the DGCL, any of our stockholders may bring an action in our name to procure a judgment in our favor, also known as a derivative action, provided that the stockholder bringing the action is a holder of our shares at the time of the transaction to which the action relates or such stockholder’s stock thereafter devolved by operation of law.

Choice of Forum

Our Amended Charter provides that, unless we consent in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware shall be the sole and exclusive forum for any stockholder to bring (i) any derivative action or proceeding brought on behalf of the Company, (ii) any action asserting a claim of breach of fiduciary duty owed by any current or former director, officer or other employee of the Company or the Company’s stockholders, (iii) any action asserting a claim against the Company or any director or officer of the Company arising pursuant to, or a claim against the Company or any director or officer of the Company, with respect to the interpretation or application of any provision of, the DGCL, our Amended Charter or Amended Bylaws, or (iv) any action asserting a claim governed by the internal affairs doctrine, except for, in each of the aforementioned actions, any claims to which the Court of Chancery of the State of Delaware determines it lacks jurisdiction. This provision does not apply to claims arising under the Exchange Act, or for any other federal securities laws which provide for exclusive federal jurisdiction. However, the exclusive forum provision provides that unless we consent in writing to the selection of an alternative forum, the federal district courts of the United States of America is the exclusive forum for the resolution of any complaint asserting a cause of action arising under the Securities Act. Therefore, this provision could apply to a suit that falls within one or more of the categories enumerated in the exclusive forum provision and that asserts claims under the Securities Act, inasmuch as Section 22 of the Securities Act creates concurrent jurisdiction for federal and state courts over all suits brought to enforce any duty or liability created by the Securities Act or the rules and regulations thereunder. There is uncertainty as to whether a court would enforce such an exclusive forum provision with respect to claims under the Securities Act.

We note that there is uncertainty as to whether a court would enforce the provision and that investors cannot waive compliance with the federal securities laws and the rules and regulations thereunder. Although we believe this provision benefits us by providing increased consistency in the application of Delaware law in the types of lawsuits to which it applies, the provision may have the effect of discouraging lawsuits against our directors and officers.

Transfer Agent and Registrar

The transfer agent and registrar for shares of our common stock is Computershare Trust Company, N.A., with offices located at 1290 Avenue of the Americas, 9th Floor, New York, NY 10104.

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LEGAL MATTERS

The validity of the securities offered hereby will be passed upon for us by Lowenstein Sandler LLP, New York, New York.

EXPERTS

The audited annual financial statements of Coya Therapeutics, Inc. incorporated by reference in this prospectus and elsewhere in the registration statement have been incorporated by reference in reliance upon the report of Weaver and Tidwell, L.L.P., independent registered public accounting firm, upon the authority of said firm as experts in accounting and auditing. The 2023 and 2022 audited annual financial statements of Coya Therapeutics, Inc. as of and for the years ended December 31, 2023 and 2022, have been audited by Weaver and Tidwell, L.L.P., independent registered public accounting firm.

WHERE YOU CAN FIND MORE INFORMATION

We are subject to the informational requirements of the Exchange Act and in accordance therewith file annual, quarterly and current reports, proxy statements and other information with the SEC. The SEC maintains a website that contains reports, proxy and information statements and other information regarding registrants that file electronically with the SEC. The address of the SEC’S website is www.sec.gov.

We make available free of charge on or through our website our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act, as soon as reasonably practicable after we electronically file such material with or otherwise furnish it to the SEC.

We have filed with the SEC a registration statement under the Securities Act, relating to the offering of these securities. The registration statement, including the attached exhibits, contains additional relevant information about us and the securities. This prospectus does not contain all of the information set forth in the registration statement. You can obtain a copy of the registration statement for free at www.sec.gov. The registration statement and the documents referred to below under “Incorporation of Certain Information By Reference” are also available on our website, https://ir.coyatherapeutics.com/financials/sec-filings/default.aspx.

We have not incorporated by reference into this prospectus the information on our website, and you should not consider it to be a part of this prospectus.

INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

The following documents filed with the SEC are incorporated by reference into this prospectus:

• our Annual Report on Form 10-K for the year ended December 31, 2023, filed with the SEC on March 19, 2024;

• the portions of our definitive proxy statement on Schedule 14A incorporated by reference to our Annual Report on Form 10-K for the year ended December  31, 2023, as filed with the SEC on March 19, 2024;

• our Quarterly Report on Form 10-Q for the period ended March 31, 2023, filed with the SEC on May 9, 2024;

• our Current Reports on Form 8-K filed with the SEC on January 19, 2024, May  8, 2024, May  20, 2024, and June 5, 2024 (other than any portion thereof deemed furnished and not filed); and

• the description of our common stock contained in Exhibit 4.7 to our Annual Report on Form 10-K for the year ended December  31, 2023, filed with the SEC on March 19, 2024.

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We also incorporate by reference all documents we file pursuant to Section 13(a), 13(c), 14 or 15 of the Exchange Act (other than any portions of filings that are furnished rather than filed pursuant to Items 2.02 and 7.01 of a Current Report on Form 8-K) after the date of the initial registration statement of which this prospectus is a part and prior to effectiveness of such registration statement. All documents we file in the future pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this prospectus and prior to the termination of the offering are also incorporated by reference and are an important part of this prospectus.

Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for the purposes of this registration statement to the extent that a statement contained herein or in any other subsequently filed document which also is or deemed to be incorporated by reference herein modifies or supersedes such statement. Any statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this registration statement.

We will provide to each person, including any beneficial owner, to whom a prospectus is delivered, without charge upon written or oral request, a copy of any or all of the documents that are incorporated by reference into this prospectus but not delivered with the prospectus, including exhibits which are specifically incorporated by reference into such documents. You can request a copy of these filings, at no cost, by writing or telephoning us at the following address or telephone number:

Coya Therapeutics, Inc.

5850 San Felipe St., Suite 500

Houston, Texas 77057

(800) 587-8170

Copies of these filings are also available, without charge, on the SEC’s website at www.sec.gov and on our website at www. https://coyatherapeutics.com as soon as reasonably practicable after they are filed electronically with the SEC. The information contained on our website is not a part of this prospectus.

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603,136 Shares of Common Stock

Coya Therapeutics, Inc.

PROSPECTUS

June 21, 2024