DOSSIER · 13F Holders · Q4 2025
GOSS 5 06/01/27

GOSSAMER BIO INC

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

CUSIP 38341PAA0·3 13F holders·last filed Dec 31, 2025
Market cap
13F value held
$21M
visible holders
Holders
3
filers reporting
Concentration
99.15%
D. E. Shaw & Co., Inc. #1
top holder share
AI Holders Summary · Q4 2025

3 institutions reported GOSS 5 06/01/27 in Q4 2025. D. E. Shaw & Co., Inc. leads at 99.1% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
D. E. Shaw & Co., Inc.
CIK 0001009207
$21M30.3M0.01%Q4 2025
02
BOOTHBAY FUND MANAGEMENT, LLC
CIK 0001549230
$177K276K0.00%Q2 2026
03
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025