TransMedics Group, Inc. (TMDX) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-06-15 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: TransMedics Group, Inc. (TMDX) CIK: 0001756262 --- Reporting Owner --- Name: Gunderson Thomas J. CIK: 0001708144 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-06-15 | Code: M (Exercise of derivative) Shares: +19,285 | Price: $2.21 Total Value: $42,619.85 Shares Owned After: 26,266 | Ownership: D (Direct) [Transaction #2] Security: Common Stock Date: 2026-06-15 | Code: S (Open market sale) Shares: -9,624 | Price: $75.06 Total Value: $722,377.44 Shares Owned After: 16,642 | Ownership: D (Direct) Footnotes: [F1] The shares were sold to cover the exercise price and applicable tax withholding obligations in connection with the exercise of the stock options. --- Derivative Transactions --- [Transaction #1] Security: Stock Option (Right to Buy) Date: 2026-06-15 | Code: M (Exercise of derivative) Shares: -19,285 | Price: $0.00 Exercisable: N/A | Expires: 2026-08-01 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F2] The stock options were granted on August 1, 2016 and are fully vested. --- Footnotes (Complete Index) --- F1: The shares were sold to cover the exercise price and applicable tax withholding obligations in connection with the exercise of the stock options. F2: The stock options were granted on August 1, 2016 and are fully vested. --- Signature --- /s/ By: /s/ Gerardo Hernandez, Attorney-in-Fact (2026-06-17)