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TransMedics Group, Inc.

TMDX
Exchange
Nasdaq
Industry
Electromedical & Electrotherapeutic Apparatus
SEC CIK
0001756262

In the last 90 days, TransMedics Group, Inc. insiders filed 1 open-market purchase and 0 sales; 375 institutions reported holding it in 13F filings for Q2 2026, worth $2.31B in total; no superinvestor holds it.

13F holders, Q2 2026

Institutional positions in TransMedics Group, Inc. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
375
−38 vs. Q1 2026
Shares held
34.8M
−1.58M (−4.4%) vs. Q1 2026
Total value
$2.31B
−$1.30B (−36.0%) vs. Q1 2026
New holders
69
138 more added
Sold out
107
125 more reduced

3 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2026: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting TMDX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ2 2026: 375 institutions
Q1 2021: 107 institutionsQ2 2021: 124 institutionsQ3 2021: 120 institutionsQ4 2021: 121 institutionsQ1 2022: 110 institutionsQ2 2022: 135 institutionsQ3 2022: 178 institutionsQ4 2022: 200 institutionsQ1 2023: 225 institutionsQ2 2023: 240 institutionsQ3 2023: 222 institutionsQ4 2023: 249 institutionsQ1 2024: 262 institutionsQ2 2024: 340 institutionsQ3 2024: 374 institutionsQ4 2024: 315 institutionsQ1 2025: 298 institutionsQ2 2025: 368 institutionsQ3 2025: 388 institutionsQ4 2025: 429 institutionsQ1 2026: 416 institutionsQ2 2026: 375 institutions
Value heldQ2 2026: $2.31B
Q1 2021: $773.0MQ2 2021: $623.5MQ3 2021: $636.5MQ4 2021: $384.7MQ1 2022: $561.4MQ2 2022: $719.7MQ3 2022: $1.18BQ4 2022: $1.79BQ1 2023: $2.26BQ2 2023: $2.73BQ3 2023: $1.91BQ4 2023: $2.76BQ1 2024: $2.52BQ2 2024: $5.09BQ3 2024: $5.74BQ4 2024: $2.30BQ1 2025: $2.63BQ2 2025: $4.93BQ3 2025: $4.17BQ4 2025: $4.53BQ1 2026: $3.63BQ2 2026: $2.31B
Institutions holding TMDX and their total value by quarter
QuarterHoldersValue
Q2 2026375$2.31B
Q1 2026416$3.63B
Q4 2025429$4.53B
Q3 2025388$4.17B
Q2 2025368$4.93B
Q1 2025298$2.63B
Q4 2024315$2.30B
Q3 2024374$5.74B
Q2 2024340$5.09B
Q1 2024262$2.52B
Q4 2023249$2.76B
Q3 2023222$1.91B
Q2 2023240$2.73B
Q1 2023225$2.26B
Q4 2022200$1.79B
Q3 2022178$1.18B
Q2 2022135$719.7M
Q1 2022110$561.4M
Q4 2021121$384.7M
Q3 2021120$636.5M
Q2 2021124$623.5M
Q1 2021107$773.0M

Institutions, Q2 2026

Shares, value and share of portfolio for each institution holding TransMedics Group, Inc.; share changes are against Q1 2026.

Institutions holding TMDX in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Kensington Investment Counsel, LLC0$00.00%−8,291−100.0%Sold out
Quadrant Capital Group LLC0$00.00%−7,647−100.0%Sold out
Polen Capital Management LLC0$00.00%−7,422−100.0%Sold out
Squarepoint Ops LLC0$00.00%−7,274−100.0%Sold out
Oasis Advisors, LLC0$00.00%−7,232−100.0%Sold out
Captrust Financial Advisors0$00.00%−6,969−100.0%Sold out
Harbour Capital Advisors, LLC0$00.00%−5,807−100.0%Sold out
Havemeyer Place LP0$00.00%−6,170−100.0%Sold out
Yorktown Management & Research Co Inc0$00.00%−5,800−100.0%Sold out
Ieq Capital, LLC0$00.00%−5,195−100.0%Sold out
Prosight Management, LP0$00.00%−5,000−100.0%Sold out
Private Advisor Group, LLC0$00.00%−4,721−100.0%Sold out
Intrust Bank NA0$00.00%−4,642−100.0%Sold out
Precision Wealth Strategies, LLC0$00.00%−4,357−100.0%Sold out
Virtue Asset Management LLC0$00.00%−3,818−100.0%Sold out
Swiss Life Asset Management Ltd0$00.00%−3,698−100.0%Sold out
HighPoint Advisor Group LLC0$00.00%−3,646−100.0%Sold out
nVerses Capital, LLC0$00.00%−3,644−100.0%Sold out
Evergreen Capital Management LLC0$00.00%−3,540−100.0%Sold out
Caitong International Asset Management Co., Ltd0$00.00%−3,364−100.0%Sold out
Blueshift Asset Management, LLC0$00.00%−3,358−100.0%Sold out
Pathstone Holdings, LLC0$00.00%−3,238−100.0%Sold out
Massachusetts Financial Services Co0$00.00%−3,232−100.0%Sold out
Advyzon Investment Management, LLC0$00.00%−3,196−100.0%Sold out
Neuberger Berman Group LLC0$00.00%−3,156−100.0%Sold out
Sava Infond d.o.o.0$00.00%−3,100−100.0%Sold out
Cynosure Management, LLC0$00.00%−3,036−100.0%Sold out
M&T Bank Corp0$00.00%−2,929−100.0%Sold out
Ausdal Financial Partners, Inc.0$00.00%−2,920−100.0%Sold out
Polymer Capital Management (US) LLC0$00.00%−2,916−100.0%Sold out
CSS LLC0$00.00%−2,880−100.0%Sold out
Inspire Advisors, LLC0$00.00%−2,831−100.0%Sold out
Graham Capital Management, L.P.0$00.00%−2,814−100.0%Sold out
Gsa Capital Partners LLP0$00.00%−2,745−100.0%Sold out
Cresset Asset Management, LLC0$00.00%−2,648−100.0%Sold out
Annis Gardner Whiting Capital Advisors, LLC0$00.00%−2,637−100.0%Sold out
Prelude Capital Management, LLC0$00.00%−2,586−100.0%Sold out
Truist Financial Corp0$00.00%−2,512−100.0%Sold out
Highland Capital Management, LLC0$00.00%−2,512−100.0%Sold out
Truefg, LLC0$00.00%−2,500−100.0%Sold out
D. E. Shaw & Co., Inc.0$00.00%−2,481−100.0%Sold out
Acadian Asset Management LLC0$00.00%−2,451−100.0%Sold out
Clearview Wealth Management LLC0$00.00%−2,326−100.0%Sold out
Total Clarity Wealth Management, Inc.0$00.00%−2,322−100.0%Sold out
CAPROCK Group, Inc.0$00.00%−2,312−100.0%Sold out
Crossmark Global Holdings, Inc.0$00.00%−2,280−100.0%Sold out
Vident Advisory, LLC0$00.00%−2,229−100.0%Sold out
Integrity Investment Advisors, LLC0$00.00%−2,222−100.0%Sold out
Integrated Wealth Concepts LLC0$00.00%−2,191−100.0%Sold out
Moors & Cabot, Inc.0$00.00%−2,077−100.0%Sold out
Stansberry Asset Management, LLC0$00.00%−2,016−100.0%Sold out
Penserra Capital Management LLC0$00.00%−2,010−100.0%Sold out
Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna0$00.00%−1,800−100.0%Sold out
STRS Ohio0$00.00%−1,700−100.0%Sold out
Signature Equity Partners, LLC0$00.00%−1,195−100.0%Sold out
Morse Asset Management, Inc0$00.00%−812−100.0%Sold out
RiverPark Advisors, LLC0$00.00%−675−100.0%Sold out
Atlas Capital Advisors LLC0$00.00%−500−100.0%Sold out
Golden State Equity Partners0$00.00%−299−100.0%Sold out
Bayforest Capital Ltd0$00.00%−294−100.0%Sold out
Sound Income Strategies, LLC0$00.00%−282−100.0%Sold out
Matrix Trust Co0$00.00%−104−100.0%Sold out
Brown Brothers Harriman & Co0$00.00%−80−100.0%Sold out
Avalon Trust Co0$00.00%−75−100.0%Sold out
Truvestments Capital LLC0$00.00%−57−100.0%Sold out
Aster Capital Management (DIFC) Ltd0$00.00%−61−100.0%Sold out
Root Financial Partners, LLC0$00.00%−40−100.0%Sold out
MAI Capital Management0$00.00%−33−100.0%Sold out
Twin Peaks Wealth Advisors, LLC0$00.00%−30−100.0%Sold out
Rachor Investment Advisory Services, LLC0$00.00%−21−100.0%Sold out
Versant Capital Management, Inc0$00.00%−19−100.0%Sold out
Bell Investment Advisors, Inc0$00.00%−16−100.0%Sold out
TD Private Client Wealth LLC0$00.00%−11−100.0%Sold out
Torren Management, LLC0$00.00%−11−100.0%Sold out
SWAN Capital LLC0$00.00%−8−100.0%Sold out
Cedar Mountain Advisors, LLC0$00.00%−5−100.0%Sold out
Marquette Asset Management, LLC0$00.00%−4−100.0%Sold out
TD Capital Management LLC0$00.00%−3−100.0%Sold out
Vermillion Wealth Management, Inc.0$00.00%−3−100.0%Sold out
Bay Harbor Wealth Management, LLC0$00.00%−1−100.0%Sold out
Curio Wealth, LLC0$00.00%−1−100.0%Sold out
HFM Investment Advisors, LLC0$00.00%−1−100.0%Sold out
Janus Henderson Group PLC––––Not filed
Arcadia Investment Management Corp––––Not filed
CWM, LLC––––Not filed