TRANSMEDICS GROUP INC TMDX
COM · Common Stock · CUSIP 89377M109 · ISIN US89377M1099
- SectorHealth care
- IndustryElectromedical & Electrotherapeutic Apparatus
- HeadquartersAndover, MA
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($933.7k this quarter). Holder counts are more reliable. Shares outstanding: 32.7m as of 2024-01-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $78.93. Options: 10 managers hold calls ($15.5m notional), 9 hold puts ($9.9m).
Trends to Q4 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 179 |
| Q4 2022 | 200 |
| Q1 2023 | 224 |
| Q2 2023 | 241 |
| Q3 2023 | 224 |
| Q4 2023 | 250 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 108 | 76 |
| Q1 2023 | 121 | 93 |
| Q2 2023 | 148 | 90 |
| Q3 2023 | 126 | 119 |
| Q4 2023 | 124 | 111 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2023 | $35.6m | $18.6m | 0.52 |
| Q2 2023 | $17.3m | $12.6m | 0.73 |
| Q3 2023 | $33.9m | $10.9m | 0.32 |
| Q4 2023 | $15.5m | $9.9m | 0.64 |
Biggest buyers
| LORD, ABBETT & CO. LLC | Added | +704.9k |
| MACKENZIE FINANCIAL CORP | New | +453.6k |
| MORGAN STANLEY | Added | +445.9k |
| ArrowMark Colorado Holdings LLC | Added | +277.8k |
| ROYCE & ASSOCIATES LP | Added | +210.0k |
| PRICE T ROWE ASSOCIATES INC /MD/ | Added | +153.9k |
| BLAIR WILLIAM & CO/IL | Added | +152.6k |
| First Light Asset Management, LLC | Added | +136.2k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Added | +133.5k |
| Soleus Capital Management, L.P. | New | +123.1k |
Biggest sellers
| Allspring Global Investments Holdings, LLC | Reduced | -563.4k |
| Nicholas Investment Partners, LP | Reduced | -355.2k |
| CREDIT SUISSE AG/ | Reduced | -272.4k |
| MARSHALL WACE, LLP | Reduced | -234.9k |
| FRED ALGER MANAGEMENT, LLC | Reduced | -231.7k |
| SEI INVESTMENTS CO | Reduced | -212.7k |
| BRAIDWELL LP | Reduced | -189.5k |
| MACQUARIE GROUP LTD | Reduced | -185.0k |
| Ophir Asset Management Pty Ltd | Reduced | -121.4k |
| Invesco Ltd. | Reduced | -112.6k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $5.1m64.0k shares |
| MILLENNIUM MANAGEMENT LLC | Added | $4.3m55.0k shares |
| CITADEL ADVISORS LLC | Reduced | $2.4m31.0k shares |
| JANE STREET GROUP, LLC | Reduced | $1.3m16.3k shares |
| WOLVERINE TRADING, LLC | Added | $1.1m14.3k shares |
| Cubist Systematic Strategies, LLC | Added | $576.2k7.3k shares |
| SIMPLEX TRADING, LLC | Reduced | $568.0k7.2k shares |
| GROUP ONE TRADING LLC | Reduced | $110.5k1.4k shares |
| OSAIC HOLDINGS, INC. | New | $4.1k7 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| WOLVERINE ASSET MANAGEMENT LLC | Reduced | $4.8m60.6k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $2.5m31.5k shares |
| CITADEL ADVISORS LLC | Reduced | $907.7k11.5k shares |
| WOLVERINE TRADING, LLC | New | $560.4k7.1k shares |
| JANE STREET GROUP, LLC | Reduced | $497.3k6.3k shares |
| Cubist Systematic Strategies, LLC | New | $402.5k5.1k shares |
| SIMPLEX TRADING, LLC | Reduced | $228.0k2.9k shares |
| GROUP ONE TRADING LLC | Reduced | $71.0k900 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| FMR LLC 13G · institution +2.1 pts · filed 2025-05-12 | 15.0% |
| BlackRock, Inc. 13G · institution filed 2025-07-18 | 14.6% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.7% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 5.1% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)
Insider purchases and sales in Q4 2023
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q1 2022 | 0 | — | 1 | $112.5k | — |
| Q2 2022 | 0 | — | 2 | $1.9m | — |
| Q3 2022 | 0 | — | 5 | $12.4m | — |
| Q4 2022 | 0 | — | 8 | $7.5m | — |
| Q1 2023 | 0 | — | 7 | $12.8m | — |
| Q2 2023 | 0 | — | 3 | $3.4m | — |
| Q3 2023 | 1 | $155.0k | 3 | $3.0m | — |
| Q4 2023 | 0 | — | 4 | $2.8m | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2023-12-13 | Provost Miriam VP, Global Regulatory Affairs | Sold | $309.6k4.1k shares |
| 2023-12-01 | Hassanein Waleed H President & CEO, director | Sold | $558.0k7.5k shares |
| 2023-11-28 | TOBIN JAMES R Director · By the James R. Tobin 2012 Trust | Sold | $701.4k10.0k shares |
| 2023-11-07 | Hassanein Waleed H President & CEO, director | Sold | $964.8k15.0k shares |
| 2023-10-02 | Gordon Stephen Chief Financial Officer | Sold | $271.1k5.0k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q4 2023
| Manager | Shares | Change |
|---|---|---|
| FMR LLC 0.03% of their portfolio | 4.8m $381.1m | Added +113.9k |
| BlackRock Inc. 0.01% of their portfolio | 2.6m $201.3m | Added +100.9k |
| LORD, ABBETT & CO. LLC 0.29% of their portfolio | 2.1m $161.9m | Added +704.9k |
| VANGUARD GROUP INC 0.00% of their portfolio | 1.9m $147.2m | Added +50.7k |
| MACQUARIE GROUP LTD 0.14% of their portfolio | 1.5m $120.4m | Reduced -185.0k |
| FRED ALGER MANAGEMENT, LLC 0.57% of their portfolio | 1.3m $106.0m | Reduced -231.7k |
| Invesco Ltd. 0.02% of their portfolio | 1.1m $90.0m | Reduced -112.6k |
| Driehaus Capital Management LLC 1.04% of their portfolio | 1.1m $86.1m | Added +89.6k |
| ArrowMark Colorado Holdings LLC 0.89% of their portfolio | 1.0m $80.6m | Added +277.8k |
| EVENTIDE ASSET MANAGEMENT, LLC 1.28% of their portfolio | 994.2k $78.5m | Added +68.9k |
| MORGAN STANLEY 0.00% of their portfolio | 959.7k $75.7m | Added +445.9k |
| CREDIT SUISSE AG/ 0.07% of their portfolio | 859.5k $67.8m | Reduced -272.4k |
| STATE STREET CORP 0.00% of their portfolio | 787.1k $62.1m | Added +284 |
| Sandhill Capital Partners LLC 5.01% of their portfolio | 763.2k $60.2m | Added +30.6k |
| First Light Asset Management, LLC 4.79% of their portfolio | 754.3k $59.5m | Added +136.2k |
| Allspring Global Investments Holdings, LLC 0.09% of their portfolio | 708.3k $55.9m | Reduced -563.4k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 700.7k $55.3m | Added +34.8k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 687.0k $54.2m | Reduced -73.1k |
| Bellevue Group AG 0.63% of their portfolio | 518.9k $41.0m | Reduced -17.8k |
| EMERALD ADVISERS, LLC 1.74% of their portfolio | 516.4k $40.8m | Added +73.8k |
| AMERICAN CENTURY COMPANIES INC 0.03% of their portfolio | 508.1k $40.1m | Added +21.1k |
| NEXT CENTURY GROWTH INVESTORS LLC 3.55% of their portfolio | 462.7k $36.5m | Reduced -14.8k |
| MACKENZIE FINANCIAL CORP 0.05% of their portfolio | 453.6k $35.8m | New |
| EMERALD MUTUAL FUND ADVISERS TRUST 1.73% of their portfolio | 414.1k $32.7m | Added +57.3k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 397.3k $31.4m | Added +39.0k |
| ROYCE & ASSOCIATES LP 0.26% of their portfolio | 351.7k $27.8m | Added +210.0k |
| MARSHALL WACE, LLP 0.05% of their portfolio | 342.3k $27.0m | Reduced -234.9k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.10% of their portfolio | 332.0k $26.2m | Added +133.5k |
| First Turn Management, LLC 3.66% of their portfolio | 323.2k $25.5m | First filing |
| Eagle Health Investments LP 5.05% of their portfolio | 314.9k $24.9m | Reduced -99.3k |
| BAILLIE GIFFORD & CO 0.02% of their portfolio | 309.0k $24.4m | Reduced -29.2k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 296.6k $23.4m | Reduced -40.7k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 275.1k $21.7m | Added +153.9k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 253.5k $20.0m | Added +4.3k |
| AXA S.A. 0.03% of their portfolio | 233.2k $18.4m | Added +94.9k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 232.7k $18.4m | Added +91.1k |
| OBERWEIS ASSET MANAGEMENT INC/ 1.57% of their portfolio | 212.9k $16.8m | Added +61.8k |
| BARCLAYS PLC 0.01% of their portfolio | 206.1k $16.3m | Added +23.5k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 194.9k $15.4m | Reduced -259 |
| CITADEL ADVISORS LLC 0.02% of their portfolio | 190.6k $15.0m | Added +79.0k |
| Ophir Asset Management Pty Ltd 2.73% of their portfolio | 174.4k $13.8m | Reduced -121.4k |
| SEI INVESTMENTS CO 0.02% of their portfolio | 173.3k $13.7m | Reduced -212.7k |
| Ensign Peak Advisors, Inc 0.03% of their portfolio | 172.3k $13.6m | Reduced -11.6k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 165.2k $13.0m | Added +3.0k |
| BLAIR WILLIAM & CO/IL 0.04% of their portfolio | 159.1k $12.6m | Added +152.6k |
| Granahan Investment Management, LLC 0.38% of their portfolio | 146.7k $11.6m | Added +12.9k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 134.9k $10.6m | Reduced -827 |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 132.7k $10.5m | Reduced -30.4k |
| Soleus Capital Management, L.P. 1.08% of their portfolio | 123.1k $9.7m | New |
| BRAIDWELL LP 0.34% of their portfolio | 117.7k $9.3m | Reduced -189.5k |
| Lisanti Capital Growth, LLC 2.04% of their portfolio | 109.4k $8.6m | New |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 96.6k $7.6m | Added +15.8k |
| SEGALL BRYANT & HAMILL, LLC 0.14% of their portfolio | 94.2k $7.4m | Added +36.6k |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 92.4k $7.3m | Reduced -1.0k |
| KORNITZER CAPITAL MANAGEMENT INC /KS 0.14% of their portfolio | 91.3k $7.2m | Reduced -20.0k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio | 87.5k $6.9m | Added +25.8k |
| OSAIC HOLDINGS, INC. 0.01% of their portfolio | 87.2k $6.9m | Added +64.3k |
| TUDOR INVESTMENT CORP ET AL 0.09% of their portfolio | 86.9k $6.9m | Added +48.1k |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 86.5k $6.8m | Added +1.9k |
| AXIOM INVESTORS LLC /DE 0.06% of their portfolio | 83.8k $6.6m | Added +38.0k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 80.2k $6.5m | Reduced -8.0k |
| Bullseye Asset Management LLC 2.66% of their portfolio | 70.5k $5.6m | Unchanged |
| PEREGRINE CAPITAL MANAGEMENT LLC 0.16% of their portfolio | 68.7k $5.4m | Reduced -17.1k |
| OSTERWEIS CAPITAL MANAGEMENT INC 0.32% of their portfolio | 64.6k $5.1m | Added +28.4k |
| LAZARD ASSET MANAGEMENT LLC 0.01% of their portfolio | 64.4k $5.1m | Reduced -9.3k |
| Swiss National Bank 0.00% of their portfolio | 64.3k $5.1m | Reduced -7.3k |
| Nicholas Investment Partners, LP 0.54% of their portfolio | 58.5k $4.6m | Reduced -355.2k |
| Divisadero Street Capital Management, LP 1.04% of their portfolio | 58.1k $4.6m | Unchanged |
| Kent Lake Capital LLC 1.68% of their portfolio | 55.0k $4.3m | Reduced -45.0k |
| Lagoda Investment Management, L.P. 2.69% of their portfolio | 50.0k $3.9m | Added +27.0k |
| Moody Aldrich Partners LLC 0.66% of their portfolio | 46.3k $3.7m | Added +24.3k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 45.6k $3.6m | Reduced -1.0k |
| ADVISORY RESEARCH INC 0.55% of their portfolio | 45.2k $3.6m | Reduced -7.1k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 42.8k $3.4m | Reduced -4.3k |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 41.6k $3.3m | Added +6.7k |
| Ziegler Capital Management, LLC 0.15% of their portfolio | 41.3k $3.3m | Reduced -52.4k |
| UBS Group AG 0.00% of their portfolio | 40.3k $3.2m | Added +16.3k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 37.5k $3.0m | Unchanged |
| State of New Jersey Common Pension Fund D 0.01% of their portfolio | 35.6k $2.8m | Reduced -2.6k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 34.3k $2.7m | Reduced -1.5k |
| Legal & General Group Plc 0.00% of their portfolio | 32.9k $2.6m | Added +2.1k |
| Liontrust Investment Partners LLP 0.04% of their portfolio | 31.7k $2.5m | Added +26 |
| BANK OF HAWAII 0.13% of their portfolio | 29.9k $2.4m | Reduced -1.2k |
| LMR Partners LLP 0.06% of their portfolio | 29.4k $2.3m | New |
| Bayesian Capital Management, LP 0.24% of their portfolio | 28.9k $2.3m | Added +8.5k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 28.2k $2.2m | Added +19.1k |
| Executive Wealth Management, LLC 0.21% of their portfolio | 28.1k $2.2m | Added +6.9k |
| Connor, Clark & Lunn Investment Management Ltd. 0.01% of their portfolio | 27.1k $2.1m | Reduced -5.1k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 26.9k $2.1m | Added +420 |
| Cubist Systematic Strategies, LLC 0.03% of their portfolio | 26.2k $2.1m | Reduced -24.1k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 25.7k $2.0m | Added +22.0k |
| NATIXIS 0.01% of their portfolio | 24.0k $1.9m | Reduced -5.7k |
| Apis Capital Advisors, LLC 1.82% of their portfolio | 22.0k $1.7m | New |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 21.9k $1.7m | Added +3.9k |
| ABN AMRO INVESTMENT SOLUTIONS 0.03% of their portfolio | 20.9k $1.7m | Reduced -431 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 19.9k $1.6m | Reduced -32.4k |
| Dana Investment Advisors, Inc. 0.07% of their portfolio | 19.5k $1.5m | Reduced -2.7k |
| Point72 Middle East FZE 0.10% of their portfolio | 18.4k $1.4m | Added +7.4k |
| Legato Capital Management LLC 0.18% of their portfolio | 17.9k $1.4m | Added +11.1k |
| LPL Financial LLC 0.00% of their portfolio | 17.4k $1.4m | Reduced -5.5k |