TMDX
insider transactionsTransMedics Group, Inc. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 90d
-9.6K
0 buy · 9.6K sell
Net value · 90d
-$722.4K
$0 in · $722.4K out
Sentiment · 90d
Net selling
0% buying · 100% selling
Open-market trades · 90d
1
0 buy · 9.6K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
Transactions · 90d
-
Exercise·M
Director
$0
19.3K sh
Own New
-
Sell·S
Director
$722.4K
9.6K sh · $75.06
Own -37%
-
Exercise·M
Director
$42.6K
19.3K sh · $2.21
Own +276%
-
Grant·A
Director
$0
2.9K sh
Own +24%
-
Grant·A
Director
$0
2.9K sh
Own +72%
-
Grant·A
Director
$0
2.9K sh
Own +72%
-
Grant·A
Director
$0
2.9K sh
Own +102%
-
Grant·A
Director
$0
2.9K sh
Own +1%
-
Grant·A
Director
$0
2.9K sh
Own +72%
-
Grant·A
Director · 10b5-1
$0
2.9K sh
Own +102%
-
Grant·A
Senior Vice President, Genera…
$0
23.2K sh
Own New
-
Grant·A
Senior Vice President, Genera…
$0
15.4K sh
Own New
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 15, 2026 | Gunderson Thomas James | Exercise M | 19.3K | $0 |
| Jun 15, 2026 | Gunderson Thomas James | Sell S | 9.6K | $722.4K |
| Jun 15, 2026 | Gunderson Thomas James | Exercise M | 19.3K | $42.6K |
| May 20, 2026 | Weill David | Grant A | 2.9K | $0 |
| May 20, 2026 | TOBIN JAMES R | Grant A | 2.9K | $0 |
| May 20, 2026 | RAINES MERILEE | Grant A | 2.9K | $0 |
| May 20, 2026 | Lovell Stephanie | Grant A | 2.9K | $0 |
| May 20, 2026 | KANIA EDWIN M JR | Grant A | 2.9K | $0 |
| May 20, 2026 | Gunderson Thomas James | Grant A | 2.9K | $0 |
| May 20, 2026 | Basile Edward M 10b5-1 | Grant A | 2.9K | $0 |
| May 19, 2026 | Matthew S. Forsyth KEY | Grant A | 23.2K | $0 |
| May 19, 2026 | Matthew S. Forsyth KEY | Grant A | 15.4K | $0 |
Buy Sell Non-market (grant · exercise · gift)
About TMDX insider trading
This page tracks insider transactions for TransMedics Group, Inc. (TMDX) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.