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 ($2.8m this quarter). Holder counts are more reliable. Shares outstanding: 31.9m as of 2022-10-31, 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 ≈ $41.76. Options: 10 managers hold calls ($24.1m notional), 9 hold puts ($14.4m).
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | — | $11.3m270.0k shares |
| SIMPLEX TRADING, LLC | — | $4.1m97.7k shares |
| GROUP ONE TRADING LLC | — | $2.1m51.3k shares |
| JANE STREET GROUP, LLC | — | $2.0m47.9k shares |
| CITADEL ADVISORS LLC | — | $1.5m36.9k shares |
| WELLS FARGO & COMPANY/MN | — | $1.2m27.9k shares |
| Caption Management, LLC | — | $1.2m27.9k shares |
| Walleye Trading LLC | — | $697.0k16.7k shares |
| Walleye Capital LLC | — | $83.0k2.0k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | — | $00 shares |
Biggest puts
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | — | $11.3m270.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | — | $1.1m27.2k shares |
| CITADEL ADVISORS LLC | — | $856.0k20.5k shares |
| SIMPLEX TRADING, LLC | — | $630.0k15.1k shares |
| JANE STREET GROUP, LLC | — | $200.0k4.8k shares |
| Caption Management, LLC | — | $187.0k4.5k shares |
| Walleye Capital LLC | — | $113.0k2.7k shares |
| Walleye Trading LLC | — | $4.0k100 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | — | $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 Q3 2022
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 |
|---|---|---|---|---|---|
| Q4 2020 | 0 | — | 0 | — | — |
| Q1 2021 | 0 | — | 0 | — | — |
| Q2 2021 | 0 | — | 0 | — | — |
| Q3 2021 | 0 | — | 0 | — | — |
| Q4 2021 | 1 | $2.3m | 1 | $101.6k | — |
| Q1 2022 | 0 | — | 1 | $112.5k | — |
| Q2 2022 | 0 | — | 2 | $1.9m | — |
| Q3 2022 | 0 | — | 5 | $12.4m | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2022-09-08 | Hassanein Waleed H President & CEO, director | Sold | $981.3k17.7k shares |
| 2022-09-07 | Hassanein Waleed H President & CEO, director | Sold | $125.2k2.3k shares |
| 2022-09-01 | Gordon Stephen Chief Financial Officer | Sold | $509.3k10.0k shares |
| 2022-09-01 | Carey John F VP of Operations | Sold | $153.3k3.0k shares |
| 2022-08-24 | Hassanein Waleed H President & CEO, director | Sold | $180.0k3.6k shares |
| 2022-08-24 | Khayal Tamer I Chief Commercial Officer | Sold | $126.2k2.5k shares |
| 2022-08-24 | Khayal Tamer I Chief Commercial Officer | Sold | $99.2k2.0k shares |
| 2022-08-23 | Hassanein Waleed H President & CEO, director | Sold | $821.1k16.4k shares |
| 2022-08-23 | Khayal Tamer I Chief Commercial Officer | Sold | $401.5k8.0k shares |
| 2022-08-23 | Khayal Tamer I Chief Commercial Officer | Sold | $374.6k7.5k shares |
| 2022-08-12 | Hassanein Waleed H President & CEO, director | Sold | $336.0k7.0k shares |
| 2022-08-11 | Hassanein Waleed H President & CEO, director | Sold | $604.3k12.9k shares |
| 2022-08-08 | Gordon Stephen Chief Financial Officer | Sold | $480.9k10.0k shares |
| 2022-08-05 | Hassanein Waleed H President & CEO, director | Sold | $902.6k20.0k shares |
| 2022-08-05 | Khayal Tamer I Chief Commercial Officer | Sold | $451.6k10.0k shares |
| 2022-08-05 | Khayal Tamer I Chief Commercial Officer | Sold | $450.8k10.0k shares |
| 2022-08-01 | Carey John F VP of Operations | Sold | $123.8k3.0k shares |
| 2022-07-29 | TOBIN JAMES R Director · By the James R. Tobin 2012 Trust | Sold | $1.9m48.5k shares |
| 2022-07-29 | Khayal Tamer I Chief Commercial Officer | Sold | $540.3k13.5k shares |
| 2022-07-29 | Carey John F VP of Operations | Sold | $160.0k4.0k shares |
| 2022-07-20 | Carey John F VP of Operations | Sold | $51.9k1.5k shares |
| 2022-07-11 | Carey John F VP of Operations | Sold | $49.5k1.5k shares |
| 2022-07-05 | TOBIN JAMES R Director · By the James R. Tobin 2012 Trust | Sold | $1.7m48.5k shares |
| 2022-07-05 | Khayal Tamer I Chief Commercial Officer | Sold | $473.5k13.5k shares |
| 2022-07-05 | Gordon Stephen Chief Financial Officer | Sold | $350.0k10.0k 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, Q3 2022
| Manager | Shares | Change |
|---|---|---|
| FMR LLC 0.02% of their portfolio | 3.9m $164.5m | — |
| BlackRock Inc. 0.00% of their portfolio | 2.2m $91.8m | — |
| MACQUARIE GROUP LTD 0.09% of their portfolio | 1.8m $73.1m | — |
| VANGUARD GROUP INC 0.00% of their portfolio | 1.6m $68.7m | — |
| Sandhill Capital Partners LLC 6.40% of their portfolio | 1.3m $56.1m | — |
| CREDIT SUISSE AG/ 0.05% of their portfolio | 1.2m $48.6m | — |
| Driehaus Capital Management LLC 0.63% of their portfolio | 996.6k $41.6m | — |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 2.86% of their portfolio | 827.0k $34.5m | — |
| NEXT CENTURY GROWTH INVESTORS LLC 4.09% of their portfolio | 804.2k $33.6m | — |
| LORD, ABBETT & CO. LLC 0.12% of their portfolio | 772.1k $32.2m | — |
| STATE STREET CORP 0.00% of their portfolio | 694.1k $29.0m | — |
| AXA S.A. 0.06% of their portfolio | 670.4k $28.0m | — |
| Bellevue Group AG 0.39% of their portfolio | 653.8k $27.3m | — |
| Bank of New York Mellon Corp 0.01% of their portfolio | 638.7k $26.7m | — |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 544.6k $22.7m | — |
| EMERALD ADVISERS, LLC 1.07% of their portfolio | 494.9k $20.7m | — |
| FRED ALGER MANAGEMENT, LLC 0.09% of their portfolio | 435.8k $18.2m | — |
| KORNITZER CAPITAL MANAGEMENT INC /KS 0.35% of their portfolio | 392.9k $16.4m | — |
| EMERALD MUTUAL FUND ADVISERS TRUST 1.01% of their portfolio | 384.4k $16.0m | — |
| Ophir Asset Management Pty Ltd 2.89% of their portfolio | 379.6k $15.8m | — |
| MORGAN STANLEY 0.00% of their portfolio | 368.6k $15.4m | — |
| Invesco Ltd. 0.00% of their portfolio | 340.3k $14.2m | — |
| Allspring Global Investments Holdings, LLC 0.02% of their portfolio | 329.6k $13.8m | — |
| NORTHERN TRUST CORP 0.00% of their portfolio | 306.6k $12.8m | — |
| Avidity Partners Management LP 0.27% of their portfolio | 300.0k $12.5m | — |
| Nicholas Investment Partners, LP 1.07% of their portfolio | 277.6k $11.6m | — |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 254.2k $10.6m | — |
| Kent Lake Capital LLC 6.84% of their portfolio | 250.0k $10.4m | — |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 226.0k $9.4m | — |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 213.9k $8.9m | — |
| ArrowMark Colorado Holdings LLC 0.10% of their portfolio | 200.4k $8.4m | — |
| Soleus Capital Management, L.P. 0.99% of their portfolio | 175.3k $7.3m | — |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 172.9k $7.2m | — |
| FIL Ltd 0.01% of their portfolio | 154.6k $6.5m | — |
| First Light Asset Management, LLC 0.65% of their portfolio | 153.8k $6.4m | — |
| ROYCE & ASSOCIATES LP 0.07% of their portfolio | 152.0k $6.3m | — |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.03% of their portfolio | 146.7k $6.1m | — |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 142.2k $5.9m | — |
| PEREGRINE CAPITAL MANAGEMENT LLC 0.19% of their portfolio | 139.0k $5.8m | — |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.05% of their portfolio | 135.3k $5.6m | — |
| PURA VIDA INVESTMENTS, LLC 0.76% of their portfolio | 120.0k $5.0m | — |
| Divisadero Street Capital Management, LP 5.56% of their portfolio | 120.0k $5.0m | — |
| CASTLEARK MANAGEMENT LLC 0.27% of their portfolio | 118.2k $4.9m | — |
| Board of Trustees of The Leland Stanford Junior University 0.32% of their portfolio | 117.3k $5.0m | — |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 113.9k $4.8m | — |
| SEI INVESTMENTS CO 0.01% of their portfolio | 111.3k $4.6m | — |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 109.3k $4.6m | — |
| Lisanti Capital Growth, LLC 0.58% of their portfolio | 103.2k $4.3m | — |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 103.0k $4.3m | — |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 101.7k $4.2m | — |
| TUDOR INVESTMENT CORP ET AL 0.08% of their portfolio | 83.0k $3.5m | — |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 82.7k $3.5m | — |
| Bullseye Asset Management LLC 1.98% of their portfolio | 81.7k $3.4m | — |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 77.5k $3.2m | — |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 77.5k $3.2m | — |
| Informed Momentum Co LLC 0.70% of their portfolio | 77.3k $3.2m | — |
| ESSEX INVESTMENT MANAGEMENT CO LLC 0.49% of their portfolio | 72.8k $3.0m | — |
| Cubist Systematic Strategies, LLC 0.02% of their portfolio | 71.8k $3.0m | — |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 71.7k $3.0m | — |
| Swiss National Bank 0.00% of their portfolio | 70.6k $2.9m | — |
| Calamos Advisors LLC 0.01% of their portfolio | 65.7k $2.7m | — |
| Global IMC LLC 0.73% of their portfolio | 65.7k $2.7m | — |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 63.2k $2.6m | — |
| Walleye Capital LLC 0.05% of their portfolio | 53.9k $2.3m | — |
| Bridgewater Associates, LP 0.01% of their portfolio | 46.9k $2.0m | — |
| Parkman Healthcare Partners LLC 0.50% of their portfolio | 42.4k $1.8m | — |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 41.5k $1.7m | — |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 41.1k $1.7m | — |
| Ensign Peak Advisors, Inc 0.00% of their portfolio | 40.2k $1.7m | — |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 37.7k $1.6m | — |
| NATIXIS 0.01% of their portfolio | 37.0k $1.6m | — |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 36.2k $1.5m | — |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 36.2k $1.5m | — |
| BAILLIE GIFFORD & CO 0.00% of their portfolio | 35.3k $1.5m | — |
| Quantbot Technologies LP 0.11% of their portfolio | 35.0k $1.5m | — |
| Mariner, LLC 0.01% of their portfolio | 34.5k $1.4m | — |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 33.6k $1.4m | — |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 31.3k $1.3m | — |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 30.8k $1.3m | — |
| Jump Financial, LLC 0.05% of their portfolio | 29.2k $1.2m | — |
| Schonfeld Strategic Advisors LLC 0.01% of their portfolio | 28.7k $1.2m | — |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 28.2k $1.2m | — |
| OCCUDO QUANTITATIVE STRATEGIES LP 0.09% of their portfolio | 26.4k $1.1m | — |
| MGO ONE SEVEN LLC 0.04% of their portfolio | 23.6k $985.0k | — |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 21.0k $877.0k | — |
| AtonRa Partners 0.84% of their portfolio | 20.5k $857.0k | — |
| Millrace Asset Group, Inc. 1.07% of their portfolio | 20.3k $848.0k | — |
| ClariVest Asset Management LLC 0.04% of their portfolio | 19.3k $805.0k | — |
| Quadrature Capital Ltd 0.03% of their portfolio | 19.3k $803.0k | — |
| Squarepoint Ops LLC 0.01% of their portfolio | 18.5k $771.0k | — |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 17.2k $717.0k | — |
| MetLife Investment Management, LLC 0.01% of their portfolio | 16.2k $675.8k | — |
| NISA INVESTMENT ADVISORS, LLC 0.01% of their portfolio | 15.6k $657.0k | — |
| NewEdge Advisors, LLC 0.01% of their portfolio | 14.7k $613.0k | — |
| AMERICAN INTERNATIONAL GROUP, INC. 0.00% of their portfolio | 14.5k $605.0k | — |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 14.2k $594.0k | — |
| Legal & General Group Plc 0.00% of their portfolio | 13.0k $542.0k | — |
| Financial Advocates Investment Management 0.07% of their portfolio | 12.9k $822.0k | — |
| OPPENHEIMER & CO INC 0.01% of their portfolio | 12.5k $523.0k | — |
| ACT CAPITAL MANAGEMENT, LLC 0.72% of their portfolio | 12.5k $522.0k | — |