DOSSIER · 13F Holders · Q2 2026
SLS

SELLAS LIFE SCIENCES GROUP I

211 institutions still hold SELLAS LIFE SCIENCES GROUP I as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 81642T209·211 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$1.3B
visible holders
Holders
211
filers reporting
Concentration
17.57%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

211 institutions reported SLS in Q2 2026. BlackRock, Inc. leads at 17.6% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$222M15.1M0.00%Q2 2026
02
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$198M13.4M0.02%Q2 2026
03
STATE STREET CORP
CIK 0000093751
$192M13.0M0.01%Q2 2026
04
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$121M8.2M0.00%Q2 2026
05
Anson Funds Management LP
CIK 0001491072
$105M7.1M6.26%Q2 2026
06
CITADEL ADVISORS LLC
CIK 0001423053
$97M6.6M0.01%Q2 2026
07
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$72M4.9M0.00%Q2 2026
08
Vanguard Portfolio Management
CIK 0002100121· Index
$32M2.2M0.00%Q2 2026
09
BNP PARIBAS FINANCIAL MARKETS
CIK 0001166588
$31M1.1M0.01%Q2 2026
10
JONES FINANCIAL COMPANIES LLLP
CIK 0000815917
$29M2.3M0.01%Q2 2026
11
NORTHERN TRUST CORP
CIK 0000073124· Index
$24M1.6M0.00%Q2 2026
12
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$20M1.3M0.00%Q2 2026
13
UBS Group AG
CIK 0001610520
$18M1.3M0.00%Q2 2026
14
MORGAN STANLEY
CIK 0000895421
$18M1.2M0.00%Q2 2026
15
DAGCO, INC.
CIK 0001767343
$18M1.2M3.36%Q2 2026
16
Sio Capital Management, LLC
CIK 0001482416
$18M1.2M3.01%Q2 2026
17
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$16M1.1M0.01%Q2 2026
18
BARCLAYS PLC
CIK 0000312069
$12M837K0.00%Q2 2026
19
BANK OF AMERICA CORP /DE/
CIK 0000070858
$12M788K0.00%Q2 2026
20
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$9M597K0.00%Q2 2026
Page 1 of 11
191 more holders available. Log in →
Insiders at SELLAS LIFE SCIENCES GROUP I
Cicic Dragan →Burns John Thomas →Stergiou Angelos M. →Kalin Katherine Bach →Van Nostrand Robert L →Wasman Jane →Varian John →Scheinberg David A →