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 ($10.7m this quarter). Holder counts are more reliable. Shares outstanding: 33.4m as of 2024-07-26, 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 ≈ $150.60. Options: 17 managers hold calls ($66.5m notional), 12 hold puts ($24.5m).
Trends to Q2 2024
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 |
| Q1 2024 | 263 |
| Q2 2024 | 340 |
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 |
| Q1 2024 | 144 | 116 |
| Q2 2024 | 197 | 143 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2023 | $33.9m | $10.9m | 0.32 |
| Q4 2023 | $15.5m | $9.9m | 0.64 |
| Q1 2024 | $28.4m | $35.0m | 1.23 |
| Q2 2024 | $66.5m | $24.5m | 0.37 |
Biggest buyers
| VANGUARD GROUP INC | Added | +637.3k |
| LORD, ABBETT & CO. LLC | Added | +456.9k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Added | +315.6k |
| WELLINGTON MANAGEMENT GROUP LLP | New | +314.3k |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. | New | +264.6k |
| FIL Ltd | Added | +216.0k |
| D. E. Shaw & Co., Inc. | New | +210.3k |
| JPMORGAN CHASE & CO | Added | +210.1k |
| Driehaus Capital Management LLC | Added | +202.9k |
| BNP PARIBAS FINANCIAL MARKETS | Added | +134.5k |
Biggest sellers
| MORGAN STANLEY | Reduced | -823.1k |
| BRAIDWELL LP | Reduced | -424.6k |
| First Light Asset Management, LLC | Reduced | -411.1k |
| FMR LLC | Reduced | -348.7k |
| MACQUARIE GROUP LTD | Reduced | -341.4k |
| Sandhill Capital Partners LLC | Reduced | -298.7k |
| AMERICAN CENTURY COMPANIES INC | Sold out | -295.6k |
| MARSHALL WACE, LLP | Reduced | -251.8k |
| EMERALD ADVISERS, LLC | Reduced | -200.1k |
| EMERALD MUTUAL FUND ADVISERS TRUST | Reduced | -165.5k |
Biggest calls
| CITADEL ADVISORS LLC | Added | $23.2m154.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $22.4m149.0k shares |
| Cubist Systematic Strategies, LLC | Added | $4.7m30.9k shares |
| JANE STREET GROUP, LLC | Added | $4.0m26.6k shares |
| PEAK6 Investments LLC | New | $3.0m20.1k shares |
| WOLVERINE TRADING, LLC | Added | $2.5m16.8k shares |
| D. E. Shaw & Co., Inc. | New | $1.4m9.6k shares |
| Walleye Capital LLC | New | $1.4m9.6k shares |
| SIMPLEX TRADING, LLC | Reduced | $1.4m9.6k shares |
| GROUP ONE TRADING LLC | Added | $1.1m7.3k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $7.5m49.6k shares |
| CITADEL ADVISORS LLC | Reduced | $7.4m48.9k shares |
| Cubist Systematic Strategies, LLC | Added | $3.7m24.6k shares |
| Walleye Capital LLC | New | $1.9m12.9k shares |
| WOLVERINE TRADING, LLC | Added | $1.2m7.7k shares |
| MILLENNIUM MANAGEMENT LLC | Reduced | $1.0m6.9k shares |
| JANE STREET GROUP, LLC | Reduced | $738.0k4.9k shares |
| SIMPLEX TRADING, LLC | Reduced | $692.0k4.6k shares |
| Walleye Trading LLC | Reduced | $210.9k1.4k shares |
| Belvedere Trading LLC | New | $165.7k1.1k 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 Q2 2024
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 |
|---|---|---|---|---|---|
| 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 | — |
| Q1 2024 | 0 | — | 4 | $8.2m | $8.1m |
| Q2 2024 | 0 | — | 8 | $37.8m | $33.8m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2024-06-14 | Hassanein Waleed H President & CEO, director | Sold plan | $1.2m8.6k shares |
| 2024-06-05 | Basile Edward M Director | Sold | $164.7k1.2k shares |
| 2024-06-05 | Ranganath Anil P. Officer | Sold | $95.1k703 shares |
| 2024-06-03 | Khayal Tamer I Chief Commercial Officer | Sold plan | $394.0k3.0k shares |
| 2024-06-03 | Gordon Stephen Chief Financial Officer | Sold plan | $280.0k2.1k shares |
| 2024-05-29 | Gordon Stephen Chief Financial Officer | Sold | $2.8m20.0k shares |
| 2024-05-29 | Weill David Director | Sold | $169.0k1.2k shares |
| 2024-05-15 | Hassanein Waleed H President & CEO, director | Sold plan | $1.2m8.6k shares |
| 2024-05-10 | Weill David Director | Sold | $324.6k2.5k shares |
| 2024-05-07 | Basile Edward M Director | Sold plan | $930.3k7.2k shares |
| 2024-05-06 | Hassanein Waleed H President & CEO, director | Sold plan | $3.9m30.0k shares |
| 2024-05-06 | Gordon Stephen Chief Financial Officer | Sold plan | $1.9m15.0k shares |
| 2024-05-06 | Khayal Tamer I Chief Commercial Officer | Sold plan | $759.5k5.8k shares |
| 2024-05-06 | Corcoran Nicholas Officer | Sold | $418.6k3.2k shares |
| 2024-05-03 | TOBIN JAMES R Director · By the James R. Tobin 2012 Trust | Sold plan | $1.5m12.0k shares |
| 2024-05-02 | Hassanein Waleed H President & CEO, director | Sold plan | $1.5m12.4k shares |
| 2024-05-01 | Hassanein Waleed H President & CEO, director | Sold plan | $6.5m56.0k shares |
| 2024-05-01 | Khayal Tamer I Chief Commercial Officer | Sold plan | $4.1m37.4k shares |
| 2024-05-01 | TOBIN JAMES R Director · By the James R. Tobin 2012 Trust | Sold plan | $1.6m15.0k shares |
| 2024-05-01 | Khayal Tamer I Chief Commercial Officer | Sold plan | $1.6m14.9k shares |
| 2024-05-01 | Khayal Tamer I Chief Commercial Officer | Sold plan | $1.2m11.1k shares |
| 2024-04-17 | Hassanein Waleed H President & CEO, director | Sold plan | $380.5k4.0k shares |
| 2024-04-10 | Hassanein Waleed H President & CEO, director | Sold plan | $1.1m12.0k shares |
| 2024-04-09 | Khayal Tamer I Chief Commercial Officer | Sold plan | $1.4m15.5k shares |
| 2024-04-08 | Khayal Tamer I Chief Commercial Officer | Sold plan | $394.9k4.4k shares |
| 2024-04-04 | Khayal Tamer I Chief Commercial Officer | Sold plan | $397.5k4.9k shares |
| 2024-04-03 | Khayal Tamer I Chief Commercial Officer | Sold plan | $404.5k5.1k shares |
| 2024-04-01 | Gordon Stephen Chief Financial Officer | Sold plan | $1.1m15.0k 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, Q2 2024
| Manager | Shares | Change |
|---|---|---|
| FMR LLC 0.04% of their portfolio | 4.5m $676.3m | Reduced -348.7k |
| BlackRock Inc. 0.01% of their portfolio | 2.6m $398.5m | Added +121.9k |
| VANGUARD GROUP INC 0.01% of their portfolio | 2.5m $380.5m | Added +637.3k |
| Driehaus Capital Management LLC 2.17% of their portfolio | 1.5m $223.8m | Added +202.9k |
| Invesco Ltd. 0.04% of their portfolio | 1.4m $205.3m | Added +80.3k |
| EVENTIDE ASSET MANAGEMENT, LLC 2.95% of their portfolio | 1.1m $172.5m | Reduced -24.5k |
| ArrowMark Colorado Holdings LLC 2.05% of their portfolio | 1.1m $171.5m | Added +58.9k |
| LORD, ABBETT & CO. LLC 0.27% of their portfolio | 1.1m $160.8m | Added +456.9k |
| MACQUARIE GROUP LTD 0.17% of their portfolio | 956.3k $144.0m | Reduced -341.4k |
| STATE STREET CORP 0.01% of their portfolio | 782.8k $117.9m | Added +7.9k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 753.7k $113.5m | Added +30.2k |
| MACKENZIE FINANCIAL CORP 0.14% of their portfolio | 606.8k $91.4m | Reduced -59.5k |
| Allspring Global Investments Holdings, LLC 0.14% of their portfolio | 569.0k $85.7m | Reduced -161.0k |
| MORGAN STANLEY 0.01% of their portfolio | 511.6k $77.1m | Reduced -823.1k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.25% of their portfolio | 440.0k $66.3m | Added +49.6k |
| Sandhill Capital Partners LLC 5.03% of their portfolio | 435.0k $65.5m | Reduced -298.7k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 429.6k $64.7m | Added +210.1k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 420.7k $63.4m | Reduced -111.2k |
| FULLER & THALER ASSET MANAGEMENT, INC. 0.26% of their portfolio | 396.3k $59.7m | Added +93.3k |
| FIL Ltd 0.06% of their portfolio | 376.8k $56.8m | Added +216.0k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.02% of their portfolio | 358.4k $54.0m | Added +315.6k |
| NEXT CENTURY GROWTH INVESTORS LLC 4.21% of their portfolio | 336.4k $50.7m | Reduced -135.8k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 330.4k $49.8m | Added +33.1k |
| EMERALD ADVISERS, LLC 2.04% of their portfolio | 323.4k $48.7m | Reduced -200.1k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 314.3k $47.3m | New |
| ROYCE & ASSOCIATES LP 0.42% of their portfolio | 301.2k $45.4m | Reduced -14.0k |
| First Light Asset Management, LLC 3.97% of their portfolio | 300.6k $45.3m | Reduced -411.1k |
| WASATCH ADVISORS LP 0.24% of their portfolio | 294.7k $44.4m | Reduced -140.2k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 293.4k $44.2m | Added +8.3k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 279.9k $42.2m | Reduced -8.6k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 273.5k $41.2m | Added +61.2k |
| NORGES BANK 0.01% of their portfolio | 269.9k $40.6m | Not comparable |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 265.1k $39.9m | Added +7.7k |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. 0.37% of their portfolio | 264.6k $39.9m | New |
| BAILLIE GIFFORD & CO 0.03% of their portfolio | 257.5k $38.8m | Reduced -45.7k |
| EMERALD MUTUAL FUND ADVISERS TRUST 1.97% of their portfolio | 249.1k $37.5m | Reduced -165.5k |
| D. E. Shaw & Co., Inc. 0.04% of their portfolio | 210.3k $31.7m | New |
| Bellevue Group AG 0.49% of their portfolio | 201.4k $30.3m | Reduced -162.6k |
| AXA S.A. 0.04% of their portfolio | 197.0k $29.7m | Added +92.1k |
| BRAIDWELL LP 0.90% of their portfolio | 190.0k $28.6m | Reduced -424.6k |
| OBERWEIS ASSET MANAGEMENT INC/ 1.73% of their portfolio | 187.1k $28.2m | Reduced -11.1k |
| Nuveen Asset Management, LLC 0.01% of their portfolio | 164.3k $24.8m | Added +80.0k |
| BLAIR WILLIAM & CO/IL 0.08% of their portfolio | 162.7k $24.5m | Reduced -20.8k |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 162.2k $24.4m | Added +26.2k |
| EAGLE ASSET MANAGEMENT INC 0.12% of their portfolio | 154.3k $23.2m | Added +20.5k |
| BNP PARIBAS FINANCIAL MARKETS 0.02% of their portfolio | 151.9k $22.9m | Added +134.5k |
| Ensign Peak Advisors, Inc 0.04% of their portfolio | 149.1k $22.5m | Reduced -22.4k |
| JANE STREET GROUP, LLC 0.02% of their portfolio | 144.2k $21.7m | Added +80.9k |
| First Turn Management, LLC 3.42% of their portfolio | 139.8k $21.1m | Reduced -157.6k |
| Palisades Investment Partners, LLC 10.42% of their portfolio | 139.7k $21.0m | First filing |
| Eagle Health Investments LP 3.58% of their portfolio | 132.9k $20.0m | Reduced -145.8k |
| RENAISSANCE TECHNOLOGIES LLC 0.03% of their portfolio | 131.9k $19.9m | Added +68.1k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 125.5k $18.9m | Reduced -51.9k |
| Hood River Capital Management LLC 0.39% of their portfolio | 125.2k $18.9m | New |
| FRANKLIN RESOURCES INC 0.01% of their portfolio | 120.8k $18.2m | Added +109.7k |
| SEGALL BRYANT & HAMILL, LLC 0.31% of their portfolio | 117.2k $17.7m | Added +3.2k |
| SEI INVESTMENTS CO 0.02% of their portfolio | 115.7k $17.4m | Added +5.3k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.02% of their portfolio | 110.6k $16.7m | Added +24.9k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.02% of their portfolio | 106.8k $16.1m | New |
| BARCLAYS PLC 0.01% of their portfolio | 105.9k $16.0m | Reduced -91.6k |
| Montanaro Asset Management Ltd 2.93% of their portfolio | 104.2k $15.7m | Added +8.0k |
| Qube Research & Technologies Ltd 0.03% of their portfolio | 98.8k $14.9m | Added +96.0k |
| AXIOM INVESTORS LLC /DE 0.12% of their portfolio | 90.6k $13.7m | Added +18.8k |
| Nicholas Investment Partners, LP 1.33% of their portfolio | 85.4k $12.9m | Added +26.5k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 78.1k $11.8m | Reduced -93.7k |
| KORNITZER CAPITAL MANAGEMENT INC /KS 0.21% of their portfolio | 75.0k $11.3m | Reduced -16.3k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 74.7k $11.3m | Reduced -11.1k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 74.6k $11.2m | Added +22.2k |
| F/m Investments LLC 0.40% of their portfolio | 72.7k $11.0m | New |
| Granahan Investment Management, LLC 0.43% of their portfolio | 71.6k $10.8m | Reduced -61.8k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 69.2k $10.4m | Added +3 |
| Lagoda Investment Management, L.P. 5.64% of their portfolio | 65.0k $9.8m | Reduced -90 |
| Swiss National Bank 0.01% of their portfolio | 64.3k $9.7m | Unchanged |
| PRUDENTIAL FINANCIAL INC 0.01% of their portfolio | 63.5k $9.6m | New |
| ExodusPoint Capital Management, LP 0.10% of their portfolio | 62.7k $9.4m | New |
| OSAIC HOLDINGS, INC. 0.02% of their portfolio | 62.2k $9.4m | Reduced -22.7k |
| NATIXIS ADVISORS, LLC 0.02% of their portfolio | 60.1k $9.1m | New |
| Pier Capital, LLC 1.33% of their portfolio | 59.3k $8.9m | Reduced -4.9k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 57.7k $8.7m | Reduced -47.8k |
| OSTERWEIS CAPITAL MANAGEMENT INC 0.44% of their portfolio | 56.7k $8.5m | Reduced -20.2k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 56.2k $8.5m | Added +48.2k |
| Biondo Investment Advisors, LLC 1.19% of their portfolio | 53.4k $8.0m | New |
| Lisanti Capital Growth, LLC 1.92% of their portfolio | 53.0k $8.0m | Reduced -5.5k |
| Bullseye Asset Management LLC 3.61% of their portfolio | 49.0k $7.4m | Reduced -21.5k |
| Black Swift Group, LLC 1.66% of their portfolio | 47.7k $7.2m | Added +42.7k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 47.6k $7.2m | Added +1.8k |
| PEREGRINE CAPITAL MANAGEMENT LLC 0.20% of their portfolio | 46.0k $6.9m | Reduced -29.3k |
| CASTLEARK MANAGEMENT LLC 0.26% of their portfolio | 42.9k $6.5m | New |
| OPPENHEIMER & CO INC 0.10% of their portfolio | 42.1k $6.3m | Added +15.6k |
| Trexquant Investment LP 0.10% of their portfolio | 42.1k $6.3m | New |
| Apis Capital Advisors, LLC 4.45% of their portfolio | 40.0k $6.0m | Reduced -12.4k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 38.6k $5.8m | Added +7.0k |
| FIRST TRUST ADVISORS LP 0.01% of their portfolio | 37.4k $5.6m | Reduced -4.3k |
| Global IMC LLC 1.21% of their portfolio | 35.7k $5.4m | New |
| Legal & General Group Plc 0.00% of their portfolio | 35.3k $5.3m | Added +2.3k |
| Informed Momentum Co LLC 0.84% of their portfolio | 34.4k $5.2m | New |
| TWINBEECH CAPITAL LP 0.10% of their portfolio | 33.6k $5.1m | Added +26.3k |
| Divisadero Street Capital Management, LP 0.82% of their portfolio | 33.2k $5.0m | Reduced -42.7k |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 32.7k $4.9m | Added +5.7k |
| UBS Group AG 0.00% of their portfolio | 32.4k $4.9m | Reduced -12.8k |