TransMedics Group Ownership | Who Owns TransMedics Group?
TransMedics Group Ownership Summary
TransMedics Group is owned by 109.28% institutional investors, 2.95% insiders. Blackrock funding, inc. /de is the largest institutional shareholder, holding 15.72% of TMDX shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 5.90% of its assets in TransMedics Group shares.
TMDX Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | TransMedics Group | 109.28% | 2.95% | -12.23% |
| Sector | Healthcare Stocks | 42.54% | 10.83% | 46.63% |
| Industry | Medical Device Stocks | 37.80% | 10.13% | 52.07% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 5.33M | 15.72% | $598.21M |
| Fmr | 5.06M | 14.93% | $568.22M |
| Vanguard group | 3.61M | 10.63% | $404.55M |
| Blackrock | 2.65M | 8.08% | $398.47M |
| State street | 1.28M | 3.77% | $143.56M |
| Ubs asset management americas | 1.07M | 3.15% | $120.00M |
| Macquarie group | 906.27K | 2.67% | $101.68M |
| Ubs group | 856.06K | 2.52% | $96.05M |
| Geode capital management | 813.57K | 2.40% | $91.30M |
| Driehaus capital management | 738.16K | 2.18% | $82.82M |
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 |
| Bastion asset management | 44.89K | 2.95% | $5.13M |
| Beaconlight capital | 44.22K | 2.45% | $4.96M |
| Lisanti capital growth | 56.90K | 1.56% | $6.38M |
| Brown capital management | 313.86K | 1.45% | $35.21M |
| Bullseye asset management | 24.06K | 1.41% | $2.70M |
| Emerald advisers | 387.59K | 1.39% | $43.49M |
| Emerald mutual fund advisers trust | 238.44K | 1.38% | $26.75M |
| Braidwell lp | 351.25K | 1.17% | $39.41M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Liontrust investment partners llp | 596.40K | 0.54% | 565.26K |
| Goldman sachs group | 703.58K | 0.01% | 386.40K |
| Ubs group | 856.06K | 0.01% | 379.93K |
| Norges bank | 366.66K | 0.00% | 366.66K |
| Price t rowe associates inc /md/ | 398.16K | 0.00% | 260.27K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Fil | - | - | -1.06M |
| Fuller & thaler asset management | - | - | -456.52K |
| 1832 asset management | - | - | -455.44K |
| Vaughan nelson investment management | - | - | -361.62K |
| American century companies | - | - | -295.61K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Norges bank | 366.66K | 0.00% | 366.66K | $22.86M |
| Renaissance | 145.20K | 0.02% | 145.20K | $16.29M |
| Panagora asset management | 76.30K | 0.03% | 76.30K | $8.56M |
| Renaissance group | 76.08K | 0.32% | 76.08K | $8.54M |
| Castleark management | 42.90K | 0.26% | 42.90K | $6.46M |
Sold Out
| Holder | Change |
|---|---|
| Bryn mawr trust | -1.00 |
| Twin tree management, lp | -1.00 |
| Stephens consulting | -1.00 |
| Tfc financial management | -1.00 |
| Sierra ocean | -1.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| 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% |
| Sep 30, 2024 | 385 | 9.38% | 36,093,168 | 7.48% | 107 | 1.03% | 208 | 1.96% | 120 | 7.14% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 2.01M | 5.90% | - |
| Vanguard US Total Market Shares ETF | 1.02M | 3.01% | 33.89K |
| Vanguard Total Stock Mkt Idx Inv | 1.01M | 2.96% | -21.25K |
| iShares Russell 2000 ETF | 802.12K | 2.35% | - |
| Vanguard Small Cap Index | 779.87K | 2.29% | -5.61K |
| Fidelity | 646.00K | 1.90% | - |
| Canada Life US Small-Mid Cap Growth A | 626.07K | 1.87% | - |
| Fidelity Small Cap Growth | 633.66K | 1.86% | - |
| Macquarie Small Cap Core I | 571.17K | 1.68% | -42.90K |
| Fidelity Advisor New Insights I | 548.00K | 1.61% | -89.90K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Dec 03, 2025 | Weill David | - | Sell | $693.20K |
| Dec 04, 2025 | Hernandez Gerardo | Chief Financial Officer | Sell | $128.45K |
| Nov 25, 2025 | Ranganath Anil P. | See remarks | Sell | $435.66K |
| Nov 17, 2025 | Hassanein Waleed H | President & CEO | Buy | $1.00M |
| Oct 29, 2025 | Basile Edward M | - | Sell | $540.32K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q4 | 1 | 4 |
| 2025 Q3 | 3 | 1 |
| 2025 Q2 | - | 4 |
| 2025 Q1 | - | 2 |
| 2024 Q4 | - | 18 |
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