X0508 4 2026-01-22 0001835022 Coya Therapeutics, Inc. COYA 0001985154 Grossman Fred 5850 SAN FELIPE ST., SUITE 500 HOUSTON TX 77057 false true false false Chief Medical Officer false Stock Option (right to buy) 4.73 2026-01-22 4 A false 140041 0.00 A 2036-01-22 Common Stock, par value $0.0001 per share 140041 140041 D Subject to continuous service through each vesting date, the shares underlying the option will vest in monthly installments over the next 36 months. Upon a change in control of the Issuer, the shares underlying the option will vest and the option will become immediately exercisable pursuant to the Issuer's 2021 Equity Incentive Plan, as amended and restated effective November 17, 2022. /s/ David Snyder, Attorney-in-Fact 2026-01-26