TransMedics Group
Pairs warm organ perfusion systems with end-to-end transplant procurement and logistics.
$88.62
After-hours close+0.18 (+0.21%)
At close$88.44(−3.61%)
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Breakdown13F · Form 4
Institutions 109.22%Insiders 3.31%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 34.56M · Float 33.54M · 97.1% free float
Institutions13F, as of Jun 30, 2026
403 holders · 37.75M shares · 68 new positions · 213 increased · 122 reduced · 105 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 5.60M | 16.19% | +303.2K | Aug 7, 2026 |
| FMR LLC | 5.13M | 14.85% | +37.1K | Aug 13, 2026 |
| Vanguard Portfolio Management LLC | 1.93M | 5.60% | +14.5K | Aug 13, 2026 |
| Vanguard Capital Management LLC | 1.50M | 4.33% | +19.4K | Aug 13, 2026 |
| State Street Corp | 1.42M | 4.11% | +100.9K | Aug 7, 2026 |
| Macquarie Management Holdings, Inc. | 910.5K | 2.63% | +24.7K | Aug 14, 2026 |
| Geode Capital Management, LLC | 894.9K | 2.59% | +55.8K | Aug 12, 2026 |
| Hood River Capital Management LLC | 751.1K | 2.17% | +51.4K | Aug 14, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| FMR LLC | 15.00% | 5.06M | 13G | May 12, 2025 ↗ |
| BlackRock, Inc. | 14.60% | 4.96M | 13G | Jul 18, 2025 ↗ |
| Vanguard Portfolio Management | 5.68% | 1.95M | 13G | Apr 29, 2026 ↗ |
| Vanguard Capital Management | 5.06% | 1.74M | 13G | Apr 30, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Waleed H. Hassanein | director, officer: President & CEO | 666.1K | 1.93% | Jul 14, 2026 |
| Edwin Kania | director | 263.7K | 0.76% | May 22, 2026 |
| Nicholas Corcoran | officer: See remarks | 41.6K | 0.12% | Jul 14, 2026 |
| Tamer I. Khayal | officer: Chief Commercial Officer | 36.0K | 0.10% | Mar 5, 2025 |
| Gerardo Hernandez | officer: Chief Financial Officer | 31.9K | 0.09% | Jul 14, 2026 |
| Giovanni Cecere | officer: Chief Commercial Officer | 19.1K | 0.06% | Feb 20, 2026 |
| Thomas J. Gunderson | director | 16.6K | 0.05% | Jun 17, 2026 |
| Matthew S. Forsyth | officer: See Remarks | 15.4K | 0.04% | May 21, 2026 |
| David Weill | director | 15.1K | 0.04% | May 22, 2026 |
| Anil P. Ranganath | officer: See remarks | 13.1K | 0.04% | Mar 4, 2026 |
7 people have not refiled in the last 18 months (4.76M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Jun 15, 2026 | Thomas J. Gundersondirector | Sale | 9,624 | $75.06 | 16,642 |
| Mar 4, 2026 | David Weilldirector | Sale | 3,571 | $146.82 | 12,134 |
| Mar 4, 2026 | Stephanie Lovelldirector | Sale | 1,193 | $149.62 | 2,866 |
| Mar 2, 2026 | Nicholas Corcoranofficer: See remarks | Sale | 2,966 | $139.12 | 29,831 |
| Mar 2, 2026 | Anil P. Ranganathofficer: See remarks | Sale | 864 | $139.12 | 13,091 |
| Mar 2, 2026 | Gerardo Hernandezofficer: Chief Financial Officer | Sale | 375 | $139.12 | 14,689 |
| Mar 4, 2026 | Gerardo Hernandezofficer: Chief Financial Officer | Sale | 5,912 | $147.21 | 14,689 |
| Dec 4, 2025 | Gerardo Hernandezofficer: Chief Financial Officer | Sale | 920 | $139.62 | 15,064 |
| Dec 3, 2025 | David Weilldirector | Sale | 5,000 | $138.64 | 12,134 |
| Nov 25, 2025 | Anil P. Ranganathofficer: See remarks | Sale | 3,000 | $145.22 | 13,955 |
CongressHouse and Senate disclosures
Not reported.