X0508 4 2024-09-06 0 0001870144 Cardio Diagnostics Holdings, Inc. CDIO 0001950789 Dogan Meeshanthini 311 W SUPERIOR ST, SUITE 444 CHICAGO IL 60654 1 1 0 0 Chief Executive Officer 0 Common Stock 2024-09-06 4 P 0 68965 0.29 A 1683867 D The reporting person holds the shares in an account with her spouse, the issuer's Chief Technology Officer, as joint tenants with rights of survivorship. The reporting person's direct ownership is 1,586,464 shares of common stock held individually and 68,965 shares of common stock held jointly with her spouse who is the issuer's Chief Technology Officer. /s/ Elisa Luqman as attorney-in-fact for Meeshanthini Dogan 2024-09-09