Transmedics Group, Inc.
A medical technology company that makes the Organ Care System, a portable device that keeps donor hearts, lungs, and livers warm, beating, and functioning outside the body during transport—a shift from the old method of packing organs on ice. Founded in 1998 by cardiac surgeon Dr. Waleed Hassanein, the company's name blends "transplant" and "medics." Its machines let transplant teams assess and preserve organs in a near-living state while they travel to recipients.
Granted 295.3K · Bought 25.6K · Sold 241.2K
Granted 2.9K
Granted 2.9K
Granted 5.8K · Sold 70.4K
Granted 109.2K · Sold 146.5K
Granted 34.1K · Sold 16.2K
Granted 112.2K · Sold 104.0K
Granted 11.1K · Sold 6.8K
Granted 22.2K · Sold 9.6K
Granted 15.4K
Granted 14.4K · Bought 2.5K · Sold 13.0K
Granted 23.2K · Sold 8.5K
Granted 12.9K · Sold 9.5K
Granted 11.1K
Granted 5.8K
Granted 38.6K · Sold 48.3K
Granted 5.8K · Sold 1.2K
Granted 2.9K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Hassanein Waleed HPresident & CEO, Director · 71 transactions | — | 616.4K | 295.3K | 25.6K | 241.2K |
| Kania EdwinDirector · 1 transaction | — | 309.9K | 2.9K | — | — |
| Kania Edwin M JrDirector · 2 transactions | +0.9% | 307.0Kas of May 2025 | 2.9K | — | — |
| Tobin James RDirector · 19 transactions | — | 180.1K | 5.8K | — | 70.4K |
| Khayal Tamer IChief Commercial Officer · 119 transactions | — | 82.7Kas of Mar 2025 | 109.2K | — | 146.5K |
| Corcoran NicholasSee remarks · 8 transactions | +131.5% | 29.8K | 34.1K | — | 16.2K |
| Gordon StephenChief Financial Officer · 27 transactions | -1.8% | 23.4Kas of Jun 2024 | 112.2K | — | 104.0K |
| Provost MiriamVP, Global Regulatory Affairs · 10 transactions | +12% | 23.3Kas of Dec 2023 | 11.1K | — | 6.8K |
| Gunderson Thomas J.Director · 3 transactions | — | 16.6K | 22.2K | — | 9.6K |
| Forsyth Matthew S.See Remarks · 1 transaction | — | 15.4K | 15.4K | — | — |
| Weill DavidDirector · 11 transactions | +34.5% | 15.1K | 14.4K | 2.5K | 13.0K |
| Hernandez GerardoChief Financial Officer · 8 transactions | — | 14.7K | 23.2K | — | 8.5K |
| Ranganath Anil P.See remarks · 8 transactions | +37.6% | 13.1K | 12.9K | — | 9.5K |
| Cecere GiovanniChief Commercial Officer · 1 transaction | — | 8.0K | 11.1K | — | — |
| Raines MerileeDirector · 3 transactions | +485.2% | 7.0K | 5.8K | — | — |
| Basile Edward MDirector · 27 transactions | -62.7% | 5.8K | 38.6K | — | 48.3K |
| Lovell StephanieDirector · 4 transactions | +385.2% | 5.8K | 5.8K | — | 1.2K |
| Gunderson Thomas JamesDirector · 2 transactions | +240.2% | 4.1Kas of May 2025 | 2.9K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 3 years: -647.1K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.