X0306 4 2019-05-06 0 0001756262 TransMedics Group, Inc. TMDX 0001430466 Hassanein Waleed H C/O TRANSMEDICS GROUP, INC. 200 MINUTEMAN ROAD ANDOVER MA 01810 1 1 0 0 President & CEO Common Stock 2019-05-06 4 J 0 369002 D 0 D Common Stock 2019-05-06 4 J 0 105429 A 105429 D Stock Option (Right to Buy) 16.50 2019-05-06 4 J 0 16986 D 2020-06-30 Common Stock 4853 0 D Stock Option (Right to Buy) 57.75 2019-05-06 4 J 0 4853 A 2020-06-30 Common Stock 4853 4853 D Stock Option (Right to Buy) 0.11 2019-05-06 4 J 0 781949 D 2021-09-27 Common Stock 223414 0 D Stock Option (Right to Buy) 0.39 2019-05-06 4 J 0 223414 A 2021-09-27 Common Stock 223414 223414 D Stock Option (Right to Buy) 0.08 2019-05-06 4 J 0 900799 D 2023-05-29 Common Stock 257371 0 D Stock Option (Right to Buy) 0.28 2019-05-06 4 J 0 257371 A 2023-05-29 Common Stock 257371 257371 D Stock Option (Right to Buy) 0.63 2019-05-06 4 J 0 798287 D 2027-06-22 Common Stock 228082 0 D Stock Option (Right to Buy) 0.28 2019-05-06 4 J 0 228082 A 2027-06-22 Common Stock 228082 228082 D The Common Stock reported herein as being disposed of is common stock of TransMedics, Inc. Immediately prior to the closing of the Issuer's initial public offering, pursuant to the terms of the Agreement and Plan of Merger and Reorganization by and among the Issuer, TransMedics, Inc. and TMDX, Inc., dated April 15, 2019 (the "Merger Agreement") such common stock of TransMedics, Inc. was converted into shares of common stock of the Issuer on a 3.5-for-one basis. The Stock Options reported herein as being disposed of are options 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. The option is fully vested. The option vests at a rate of 2.0833% of the total number of shares each month until the option is fully vested on the fourth anniversary of the vesting commencement date, June 22, 2017. By: /s/ Stephen Gordon, Attorney-in-Fact 2019-05-06