X0508 4 2025-10-29 0001756262 TransMedics Group, Inc. TMDX 0001773661 Basile Edward M C/O TRANSMEDICS GROUP, INC. 200 MINUTEMAN ROAD ANDOVER MA 01810 true false false false true Common Stock 2025-10-29 4 M false 4142 0.70 A 7008 D Common Stock 2025-10-29 4 S false 4142 130.45 D 2866 D Stock Option (Right to Buy) 0.70 2025-10-29 4 M false 4142 D 2026-02-16 Common Stock 4142 0 D The reported transactions were effected pursuant to a Rule 10b5-1 trading plan entered into on November 6, 2024. The option is fully vested. The Stock Option reported herein as being disposed of is an option to purchase common stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the terms of the Merger Agreement, each outstanding option to purchase shares of common stock of TransMedics, Inc. was converted into an outstanding option to purchase shares of common stock of the Issuer adjusted on a 3.5-for-one basis, with a corresponding adjustment to the exercise price. By: /s/ Gerardo Hernandez, Attorney-in-Fact 2025-10-31