TransMedics Group, Inc. (TMDX) Insider Ownership

Historic Insider Ownership Trends

As of April 22, 2026, the three largest insider holders of TMDX are Waleed H Hassanein (President Ceo, 495.01K shares), Edwin M Jr Kania (Director, 260.81K shares), James R Tobin (Director, 173.15K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Waleed H Hassanein President Ceo 0 495,009 18 Nov, 2025
Edwin M Jr Kania - 260,810 0 23 May, 2025
James R Tobin - 0 173,146 17 Sep, 2024
Waleed H Hassanein President Ceo 121,424 0 26 Feb, 2025
Tamer I Khayal Chief Commercial Officer 36,042 0 05 Mar, 2025
Nicholas Corcoran - 29,831 0 04 Mar, 2026
Miriam Provost Vp, Global Regulatory Affairs 23,348 0 15 Dec, 2023
Stephen Gordon Chief Financial Officer 21,299 0 05 Jun, 2024
Giovanni Cecere Chief Commercial Officer 19,057 0 20 Feb, 2026
Gerardo Hernandez Chief Financial Officer 14,689 0 04 Mar, 2026
John F Sullivan Vp Of Quality Engineering 14,273 0 01 Sep, 2021
John F Carey Vp Of Operations 14,120 0 03 Feb, 2023
Anil P. Ranganath - 13,091 0 04 Mar, 2026
David Weill - 12,134 0 06 Mar, 2026
Laura Damme Vp, Clinical Affairs 5,685 0 22 Feb, 2023
James R Tobin - 4,059 0 23 May, 2025
Merilee Raines - 4,059 0 23 May, 2025
Thomas James Gunderson - 4,059 0 23 May, 2025
Edward M Basile - 2,866 0 31 Oct, 2025
Stephanie Lovell - 2,866 0 06 Mar, 2026
John F Carey Vp Of Operations 379 0 27 Jun, 2022

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
04 Mar, 2026 David Weill Common Stock A 3,571 $14.20 15,705 D M
04 Mar, 2026 Stephanie Lovell Common Stock D 1,193 $149.62 2,866 D S
04 Mar, 2026 David Weill Common Stock D 3,571 $146.82 12,134 D S
04 Mar, 2026 David Weill Stock Option (Right to Buy) D 3,571 $0.00 1,429 D M
23 Jan, 2026 Nicholas Corcoran Common Stock D 984 $135.30 32,797 D F
02 Mar, 2026 Gerardo Hernandez Common Stock D 375 $139.12 14,689 D S
02 Mar, 2026 Anil P. Ranganath Common Stock D 864 $139.12 13,091 D S
02 Mar, 2026 Nicholas Corcoran Common Stock D 2,966 $139.12 29,831 D S
04 Mar, 2026 Gerardo Hernandez Common Stock A 1,324 $77.12 16,013 D M
04 Mar, 2026 Gerardo Hernandez Common Stock D 1,324 $147.21 14,689 D S
04 Mar, 2026 Gerardo Hernandez Common Stock A 5,912 $69.84 20,601 D M
04 Mar, 2026 Gerardo Hernandez Common Stock D 5,912 $147.21 14,689 D S
04 Mar, 2026 Gerardo Hernandez Stock Option (Right to Buy) D 1,324 $0.00 3,975 D M
04 Mar, 2026 Gerardo Hernandez Stock Option (Right to Buy) D 5,912 $0.00 13,010 D M
18 Feb, 2026 Giovanni Cecere Common Stock A 11,082 $0.00 19,057 D A
18 Feb, 2026 Giovanni Cecere Stock Option (Right to Buy) A 16,734 $0.00 16,734 D A
03 Dec, 2025 David Weill Common Stock A 5,000 $14.20 17,134 D M
04 Dec, 2025 Gerardo Hernandez Common Stock D 920 $139.62 15,064 D S
03 Dec, 2025 David Weill Common Stock D 5,000 $138.64 12,134 D S
03 Dec, 2025 David Weill Stock Option (Right to Buy) D 5,000 $0.00 5,000 D M