TransMedics Group Ownership | Who Owns TransMedics Group?
TransMedics Group Ownership Summary
TransMedics Group is owned by 68.28% institutional investors, 2.95% insiders, and 28.77% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 15.82% of TMDX shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 6.03% of its assets in TransMedics Group shares.
TMDX Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | TransMedics Group | 68.28% | 2.95% | 28.77% |
| Sector | Healthcare Stocks | 232.86% | 10.65% | -143.51% |
| Industry | Medical Device Stocks | 37.83% | 10.48% | 51.69% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 5.40M | 15.82% | $656.33M |
| Fmr | 5.06M | 14.93% | $568.22M |
| Vanguard group | 3.61M | 10.57% | $438.58M |
| Blackrock | 2.65M | 8.08% | $398.47M |
| State street | 1.28M | 3.77% | $143.56M |
| Ubs asset management americas | 996.88K | 2.92% | $121.27M |
| Goldman sachs group | 965.93K | 2.83% | $117.51M |
| Geode capital management | 816.47K | 2.39% | $99.34M |
| Driehaus capital management | 738.16K | 2.18% | $82.82M |
| Hood river capital management | 678.44K | 2.00% | $76.12M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Lagoda investment management | 108.06K | 6.86% | $12.12M |
| Montanaro asset management | 130.59K | 3.66% | $14.65B |
| Beaconlight capital | 44.22K | 2.45% | $4.96M |
| Bastion asset management | 55.46K | 1.86% | $6.10M |
| Brown capital management | 313.86K | 1.45% | $35.21M |
| Bullseye asset management | 24.06K | 1.41% | $2.70M |
| Braidwell lp | 351.25K | 1.17% | $39.41M |
| Taylor frigon capital management | 19.72K | 1.12% | $1.96M |
| Emerald mutual fund advisers trust | 229.33K | 1.11% | $22.80M |
| Emerald advisers | 342.79K | 1.08% | $34.08M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Liontrust investment partners llp | 596.40K | 0.54% | 565.26K |
| Goldman sachs group | 965.93K | 0.01% | 262.35K |
| Price t rowe associates inc /md/ | 398.16K | 0.00% | 260.27K |
| Vanguard fiduciary trust | 236.39K | 0.01% | 236.39K |
| Two sigma investments, lp | 635.39K | 0.11% | 223.41K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Fil | - | - | -1.06M |
| Macquarie group | - | - | -906.27K |
| Fuller & thaler asset management | - | - | -456.52K |
| 1832 asset management | - | - | -455.44K |
| Vaughan nelson investment management | - | - | -361.62K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Vanguard fiduciary trust | 236.39K | 0.01% | 236.39K | $23.50M |
| Integrated advisors network | 47.59K | 0.25% | 47.59K | $4.73M |
| Castleark management | 42.90K | 0.26% | 42.90K | $6.46M |
| Geneos wealth management | 30.64K | 0.07% | 30.64K | $3.05M |
| Norges bank | 30.57K | 0.00% | 30.57K | $3.72M |
Sold Out
| Holder | Change |
|---|---|
| Tfc financial management | -1.00 |
| Concord wealth partners | -1.00 |
| Stephens consulting | -1.00 |
| Twin tree management, lp | -1.00 |
| Bryn mawr trust | -1.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | 328 | -21.15% | 23,291,905 | -38.14% | 68 | 0.55% | 180 | -23.08% | 89 | -23.28% |
| Sep 30, 2025 | 398 | 4.74% | 37,059,706 | 4.65% | 109 | 1.00% | 223 | 3.72% | 114 | - |
| Jun 30, 2025 | 382 | 20.13% | 36,167,798 | -7.22% | 106 | 0.80% | 220 | 27.17% | 111 | 20.65% |
| Mar 31, 2025 | 318 | -4.50% | 38,982,186 | 5.78% | 115 | 0.95% | 174 | -14.29% | 91 | 10.98% |
| Dec 31, 2024 | 265 | -31.88% | 29,921,356 | -17.12% | 89 | 0.77% | 164 | -22.64% | 69 | -42.50% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 2.08M | 6.03% | 453.00 |
| Vanguard US Total Market Shares ETF | 1.02M | 3.01% | 33.89K |
| Vanguard Total Stock Mkt Idx Inv | 1.04M | 3.00% | 11.77K |
| iShares Russell 2000 ETF | 788.80K | 2.28% | 6.63K |
| Vanguard Small Cap Index | 753.08K | 2.18% | 15.31K |
| Fidelity | 646.00K | 1.90% | - |
| Canada Life US Small-Mid Cap Growth A | 626.07K | 1.87% | - |
| Fidelity Advisor New Insights I | 614.30K | 1.78% | - |
| Fidelity VIP Contrafund Initial | 589.60K | 1.71% | - |
| Macquarie Small Cap Core I | 571.17K | 1.68% | -42.90K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Mar 04, 2026 | Lovell Stephanie | - | Sell | $178.50K |
| Mar 04, 2026 | Weill David | - | Sell | $524.29K |
| Mar 04, 2026 | Hernandez Gerardo | Chief Financial Officer | Sell | $870.31K |
| Mar 02, 2026 | Hernandez Gerardo | Chief Financial Officer | Sell | $52.17K |
| Mar 02, 2026 | Ranganath Anil P. | See remarks | Sell | $120.20K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q1 | - | 6 |
| 2025 Q4 | 1 | 4 |
| 2025 Q3 | 3 | 1 |
| 2025 Q2 | - | 4 |
| 2025 Q1 | - | 2 |
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