13F Insight
DOSSIER · 13F Holders · Q2 2026Healthcare · Electromedical & Electrotherapeutic Apparatus
TMDX

TRANSMEDICS GROUP INC

405 institutions still hold TRANSMEDICS GROUP INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 89377M109·Electromedical & Electrotherapeutic Apparatus·405 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$1.8B
visible holders
Holders
405
filers reporting
Concentration
21.01%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

405 institutions reported TMDX in Q2 2026. BlackRock, Inc. leads at 21.0% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$372M5.6M0.01%Q2 202602
FMR LLC
CIK 0000315066
$341M5.1M0.01%Q2 202603
Vanguard Portfolio Management
CIK 0002100121· Index
$128M1.9M0.01%Q2 202604
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$99M1.5M0.00%Q2 202605
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$96M1.4M0.01%Q2 202606
STATE STREET CORP
CIK 0000093751
$94M1.4M0.00%Q2 202607
CITADEL ADVISORS LLC
CIK 0001423053
$94M1.4M0.01%Q2 202608
Delaware Management Holdings, Inc.
CIK 0000921739
$60M910K0.09%Q2 202609
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$59M895K0.00%Q2 202610
Tidal Investments LLC
CIK 0001600064
$50M751K0.09%Q2 202611
Hood River Capital Management LLC
CIK 0001578177
$50M751K0.36%Q2 202612
TWO SIGMA ADVISERS, LP
CIK 0001478735
$44M362K0.09%Q4 202513
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$41M610K0.01%Q2 202614
GOLDMAN SACHS GROUP INC
CIK 0000886982
$37M560K0.00%Q2 202615
EVENTIDE ASSET MANAGEMENT, LLC
CIK 0001442891
$36M549K0.49%Q2 202616
PRICE T ROWE ASSOCIATES INC /MD/
CIK 0000080255
$34M347K0.00%Q1 202617
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$34M516K0.01%Q2 202618
BRAIDWELL LP
CIK 0001920938
$33M329K1.09%Q1 202619
EMERALD ADVISERS, LLC
CIK 0001015083
$33M490K0.77%Q2 202620
UBS Group AG
CIK 0001610520
$32M489K0.00%Q2 2026
Page 1 of 21
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Insiders at TRANSMEDICS GROUP INC
Hassanein Waleed H →Hernandez Gerardo →Corcoran Nicholas →Forsyth Matthew S. →Weill David →Lovell Stephanie →Ranganath Anil P. →Basile Edward M →