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NASDAQ: TMDX
Transmedics Group Inc Stock Ownership - Who owns Transmedics Group?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Transmedics Group Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
David WeillDirector2026-09-111,336$81.63
$109.06kBuy
Thomas J. GundersonDirector2026-06-1519,285$2.21
$42.62kBuy
Thomas J. GundersonDirector2026-06-159,624$75.06
$722.38kSell
Gerardo HernandezChief Financial Officer2026-03-045,912$69.84
$412.89kBuy
Gerardo HernandezChief Financial Officer2026-03-041,324$77.12
$102.11kBuy
Gerardo HernandezChief Financial Officer2026-03-041,324$147.21
$194.91kSell
Gerardo HernandezChief Financial Officer2026-03-045,912$147.21
$870.31kSell
Stephanie LovellDirector2026-03-041,193$149.62
$178.50kSell
David WeillDirector2026-03-043,571$14.20
$50.71kBuy
David WeillDirector2026-03-043,571$146.82
$524.29kSell

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Net Insider Buy/Sell (L12M) Ownership

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TMDX Shareholders

What type of owners hold Transmedics Group Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Flagship Ventures Fund IV General Partner LLC7.64%2,650,870$229.09MInsider
Abrams Capital Management LP7.57%2,624,712$226.83MInsider
United Therapeutics Corp5.92%2,053,240$177.44MInsider
Edwin M. Kania Jr.4.59%1,590,807$137.48MInsider
Waleed H. Hassanein1.92%666,102$57.56MInsider
James R. Tobin0.97%335,273$28.97MInsider
Edwin Kania0.89%309,874$26.78MInsider
Nicholas Corcoran0.12%41,558$3.59MInsider
Tamer I. Khayal0.10%36,042$3.11MInsider
Gerardo Hernandez0.09%31,935$2.76MInsider

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TMDX vs Medical Device Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
TMDX0.10%30.31%Net BuyingNet Buying
ALMR0.04%10.71%Net Buying
IRTC0.11%30.69%Net SellingNet Selling
AXGN0.10%51.87%Net SellingNet Selling
INSP0.13%59.69%Net SellingNet Selling
View Top Medical Device Stocks

Transmedics Group Stock Ownership FAQ

Who owns Transmedics Group?

Transmedics Group (NASDAQ: TMDX) is owned by 0.10% institutional shareholders, 30.31% Transmedics Group insiders, and 69.59% retail investors. Flagship Ventures Fund IV General Partner LLC is the largest individual Transmedics Group shareholder, owning 2.65M shares representing 7.64% of the company. Flagship Ventures Fund IV General Partner LLC's Transmedics Group shares are currently valued at $229.09M.

If you're new to stock investing, here's how to buy Transmedics Group stock.
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