TransMedics Group, Inc.
TMDX- Exchange
- Nasdaq
- Industry
- Electromedical & Electrotherapeutic Apparatus
- SEC CIK
- 0001756262
In the last 90 days, TransMedics Group, Inc. insiders filed 1 open-market purchase and 0 sales; 392 institutions reported holding it in 13F filings for Q2 2026, worth $2.84B in total; Oaktree Capital is the only superinvestor holding it.
Key figures
- Insider buysLast 90 days, $109.1K in total
- 1
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, −36 vs. previous quarter
- 392
- 13F valueReported value at the end of Q2 2026
- $2.84B
- Superinvestors holdingAt the end of Q2 2026
- 1
Price chart
Superinvestors holding TMDX, Q2 2026
1 superinvestor reports holding TransMedics Group, Inc. on Form 13F. Percentages are the stock's share of each portfolio.
Latest insider trades
Open-market purchases and sales by TransMedics Group, Inc. insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 14, 2026 (view filing)4:30 PM ET | Sep 11 | 3 days | Weill DavidDirector | PPurchase | +1.34K | $81.63 | +$109.1K | +8.9%16.4K after | |
| Jun 17, 2026 (view filing) | Jun 15 | 2 days | Gunderson Thomas JamesDirector | SSale | −9.62K | $75.06 | −$722.4K | −36.6%16.6K after | |
| Mar 6, 2026 (view filing) | Mar 4 | 2 days | Lovell StephanieDirector | SSale | −1.19K | $149.62 | −$178.5K | −29.4%2.87K after | |
| Mar 6, 2026 (view filing) | Mar 4 | 2 days | Weill DavidDirector | SSale | −3.57K | $146.82 | −$524.3K | −22.7%12.1K after | |
| Mar 4, 2026 (view filing) | Mar 2-4 | 2 days | Hernandez GerardoChief Financial Officer | SSale | −7.61K | $146.81 | −$1.12M | −34.1%14.7K after | 3 lots |
| Mar 4, 2026 (view filing) | Mar 2 | 2 days | Ranganath Anil P.See remarks | SSale | −864 | $139.12 | −$120.2K | −6.2%13.1K after | |
| Mar 4, 2026 (view filing) | Mar 2 | 2 days | Corcoran NicholasSee remarks | SSale | −2.97K | $139.12 | −$412.6K | −9.0%29.8K after | |
| Dec 5, 2025 (view filing) | Dec 3 | 2 days | Weill DavidDirector | SSale | −5.00K | $138.64 | −$693.2K | −29.2%12.1K after | |
| Dec 5, 2025 (view filing) | Dec 4 | 1 day | Hernandez GerardoChief Financial Officer | SSale | −920 | $139.62 | −$128.5K | −5.8%15.1K after | |
| Nov 26, 2025 (view filing) | Nov 25 | 1 day | Ranganath Anil P.See remarks | SSale | −3.00K | $145.22 | −$435.7K | −17.7%14.0K after |
Top 10 13F holders, Q2 2026
The largest institutional positions in TransMedics Group, Inc. at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 5,596,549 | $381.8M | 0.01% | +303,218+5.7% | Added |
| FMR LLC | 5,133,328 | $347.0M | 0.02% | +37,085+0.7% | Added |
| Vanguard Portfolio Management LLC | 1,933,989 | $128.5M | 0.01% | +14,454+0.8% | Added |
| State Street Corp | 1,420,421 | $107.3M | 0.00% | +100,942+7.7% | Added |
| Vanguard Capital Management LLC | 1,497,600 | $99.5M | 0.00% | +19,448+1.3% | Added |
| Wolverine Asset Management LLC | – | $75.4M | 0.98% | – | – |
| Two Sigma Investments, LP | 8,945 | $73.5M | 0.06% | −316,195−97.2% | Reduced |
| Tenor Capital Management Co., L.P. | – | $64.8M | 0.91% | – | – |
| Nomura Asset Management International Inc. | 910,495 | $60.5M | 0.09% | +24,654+2.8% | Added |
| Geode Capital Management, LLC | 894,913 | $59.5M | 0.00% | +55,758+6.6% | Added |