X0306 4 2022-12-01 0 0001756262 TransMedics Group, Inc. TMDX 0001774272 Carey John F C/O TRANSMEDICS GROUP, INC. 200 MINUTEMAN ROAD ANDOVER MA 01810 0 1 0 0 VP of Operations Common Stock 2022-12-01 4 M 0 3000 0.28 A 3771 D Common Stock 2022-12-01 4 S 0 1497 60.83 D 2274 D Common Stock 2022-12-01 4 S 0 1403 61.70 D 871 D Common Stock 2022-12-01 4 S 0 100 62.45 D 771 D Common Stock 2022-12-02 4 M 0 6237 0.28 A 7008 D Common Stock 2022-12-02 4 M 0 6800 0.28 A 13808 D Common Stock 2022-12-02 4 M 0 10000 38.46 A 23808 D Common Stock 2022-12-02 4 S 0 10000 63.50 D 13808 D Common Stock 2022-12-05 4 M 0 36 0.28 A 13844 D Stock Option (Right to Buy) 0.28 2022-12-01 4 M 0 3000 0.00 D 2023-05-29 Common Stock 3000 6273 D Stock Option (Right to Buy) 0.28 2022-12-02 4 M 0 6237 0.00 D 2023-05-29 Common Stock 6237 36 D Stock Option (Right to Buy) 0.28 2022-12-02 4 M 0 6800 0.00 D 2023-03-27 Common Stock 6800 0 D Stock Option (Right to Buy) 38.46 2022-12-02 4 M 0 10000 0.00 D 2031-02-24 Common Stock 10000 15000 D Stock Option (Right to Buy) 0.28 2022-12-05 4 M 0 36 0.00 D 2023-05-29 Common Stock 36 0 D The reported transactions were effected pursuant to a Rule 10b5-1 trading plan. The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $60.23 to $61.22, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range. The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $61.29 to $61.99, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range. The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $63.50 to $63.55, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range. 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, February 24, 2021. By: /s/ Stephen Gordon, as attorney-in-fact 2022-12-05