UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): December 16, 2025

Coya Therapeutics, Inc.

(Exact name of Registrant as Specified in Its Charter)

Delaware

001-41583

85-4017781

(State or Other Jurisdiction
of Incorporation)

(Commission

File Number)

(IRS Employer
Identification No.)


5850 San Felipe St., Suite 500
Houston, Texas		77057
(Address of Principal Executive Offices)		(Zip Code)

Registrant’s Telephone Number, Including Area Code: 800 587-8170

N/A

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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


Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.0001 per share	COYA	The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☒

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

Item 8.01

Other Events.

On December 16, 2025, Coya Therapeutics, Inc. (the “Company”) received a $4.2 million milestone payment under the Development and License Agreement, dated December 5, 2023 (the “DRL Development Agreement”), by and amongst the Company, Dr. Reddy’s Laboratories Ltd. and its affiliate, Dr. Reddy’s Laboratories SA. The milestone payment was triggered by dosing of the first patient in the Company’s ALSTARS trial evaluating COYA 302 for the treatment of amyotrophic lateral sclerosis (ALS), which was announced on December 9, 2025.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

COYA THERAPEUTICS, INC.

Date: December 17, 2025

/s/ Arun Swaminathan Ph.D.

Arun Swaminathan Ph.D.
Chief Executive Officer

Coya Therapeutics, Inc. 8-K