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 1 sale; 378 institutions reported holding it in 13F filings for Q2 2026, worth $2.31B in total; no superinvestor holds it.
Key figures
- Market capClose on Nov 12, 2026
- $3.20B
- Insider buysLast 90 days, $109.1K in total
- 1
- Insider sellsLast 90 days, $385.5K in total
- 1
- 13F holdersQ2 2026, −40 vs. previous quarter
- 378
- 13F valueReported value at the end of Q2 2026
- $2.31B
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Financials
See financial statementsFrom SEC filings, in USD.
- Revenue, FY2025
- $605.5M
- +37.1% year over year
- Net income, FY2025
- $190.3M
- +436.6% year over year
- Free cash flow, FY2025
- $133.6M
- No comparable prior period
- Revenue, Q3 FY2026
- $203.0M
- +41.1% year over year
Revenue flow, FY2025
Green is profit; orange is costs, expenses and taxes. Percentages are shares of revenue.
Short interest
See short dataFrom FINRA, settlement date Oct 30, 2026.
- Short interest
- 8.88M
- Shares sold short
- Change
- +108.5K
- +1.2% vs. previous
- Days to cover
- 10.22
- At average daily volume
Superinvestors holding TMDX, Q2 2026
Go to the superinvestors tabNo superinvestor reported holding TMDX at the end of Q2 2026.
Latest insider trades
See all insider tradesOpen-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 |
|---|---|---|---|---|---|---|---|---|---|
| Nov 12, 2026 (view filing)4:15 PM ET | Nov 9 | 3 days | Tobin James RDirector | SSale | −4.06K | $94.97 | −$385.5K | −58.1%2.92K after | 2 lots |
| 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 |
Top 10 13F holders, Q2 2026
See all 378 holdersThe 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 | $371.7M | 0.01% | +303,218+5.7% | Added |
| FMR LLC | 5,133,328 | $341.0M | 0.01% | +37,085+0.7% | Added |
| Vanguard Portfolio Management LLC | 1,933,989 | $128.5M | 0.01% | +14,454+0.8% | Added |
| Vanguard Capital Management LLC | 1,497,600 | $99.5M | 0.00% | +19,448+1.3% | Added |
| State Street Corp | 1,420,421 | $94.3M | 0.00% | +100,942+7.7% | Added |
| 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 |
| Hood River Capital Management LLC | 751,133 | $49.9M | 0.36% | +51,363+7.3% | Added |
| Dimensional Fund Advisors LP | 610,107 | $40.5M | 0.01% | +93,428+18.1% | Added |
| Braidwell LP | 609,715 | $40.5M | 1.50% | +280,324+85.1% | Added |
Holders of 5% or more of TMDX
See all 4 holders and filingsHolders whose latest Schedule 13D or 13G filing reports 5% or more of TransMedics Group, Inc..
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| FMR LLC | 13G/A | 15.00%5.06M shares | +2.10 ppfrom 12.90% | Feb 8, 20217 filings | May 12, 2025 | SEC |
| BlackRock, Inc. | 13G/A | 14.60%4.96M shares | – | Oct 7, 20242 filings | Jul 18, 2025 | SEC |
| Vanguard Portfolio Management LLC | 13G | 5.68%1.95M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
| Vanguard Capital Management LLC | 13G | 5.06%1.74M shares | New | Apr 30, 20261 filing | Apr 30, 2026 | SEC |