13F Insight
DOSSIER · 13F Holders · Q4 2025CyclicalNet sold
FHTX

FOGHORN THERAPEUTICS INC

108 institutions still hold FOGHORN THERAPEUTICS INC as of Q4 2025. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 344174107·108 13F holders·last filed Dec 31, 2025
Market cap
—
▲ 1.2%
vs prior quarter
13F value held
$208M
62.0% inst. owned
of float
Holders
108
-77 QoQ
filers reporting
Activity
+43 / −77
+827 added · −740 reduced
this quarter
Concentration
32.92%
Flagship Pioneering Inc. #1
top holder share
AI Holders Summary · Q4 2025

108 institutions reported FHTX in Q4 2025. Flagship Pioneering Inc. leads at 32.9% of the visible book. -77 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
Flagship Pioneering Inc.
CIK 0001400240
$68M12.7M21.12%Q4 202502
FMR LLC
CIK 0000315066
$29M6.0M0.00%Q1 202603
BVF INC/IL
CIK 0001056807
$29M5.3M0.96%Q4 202504
DEERFIELD MANAGEMENT COMPANY, L.P.
CIK 0001009258
$20M3.6M0.25%Q4 202505
RAYMOND JAMES FINANCIAL INC
CIK 0000720005
$12M2.6M0.00%Q1 202606
BlackRock, Inc.
CIK 0002012383
$11M2.4M0.00%Q1 202607
Euclidean Capital LLC
CIK 0001825034
$8M1.6M1.92%Q1 202608
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$7M1.5M0.00%Q1 202609
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$4M848K0.00%Q1 202610
Siren, L.L.C.
CIK 0002005245
$3M721K0.10%Q1 202611
STATE STREET CORP
CIK 0000093751
$3M680K0.00%Q1 202612
AMERIPRISE FINANCIAL INC
CIK 0000820027
$2M449K0.00%Q1 202613
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$2M406K0.00%Q1 202614
Candriam S.C.A.
CIK 0001537014
$1M314K0.01%Q1 202615
JACOBS LEVY EQUITY MANAGEMENT, INC
CIK 0000884414
$1M304K0.01%Q1 202616
Birchview Capital, LP
CIK 0001618205
$1M282K0.77%Q1 202617
NORTHERN TRUST CORP
CIK 0000073124· Index
$1M276K0.00%Q1 202618
Vanguard Portfolio Management
CIK 0002100121
$1M256K0.00%Q1 202619
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$1M241K0.00%Q1 202620
CITADEL ADVISORS LLC
CIK 0001423053
$984,291182K0.00%Q4 2025
Page 1 of 6
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