SELLAS LIFE SCIENCES GROUP, INC.

PublicCIK: 1390478
SLSNASDAQ
Location

NEW YORK, NY

13F Filings

Institutional Holders

SELLAS LIFE SCIENCES GROUP, INC.SLS— Latest position per institution from SEC 13F filings

15

Institutional holders

93.93M

Total shares held

1.17B

Estimated value

4.70M

Avg. position size

1

BLACKROCK, INC.

CIK 2012383

Shares

15.07M

Value

222.44M

Filed

Jun 30, 2026

2

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 1446194

Shares

13.40M

Value

197.74M

Filed

Jun 30, 2026

3

STATE STREET CORP

CIK 93751

Shares

13M

Value

191.83M

Filed

Jun 30, 2026

4

VANGUARD GROUP INC

CIK 102909

Shares

8.47M

Value

31.92M

Filed

Dec 31, 2025

5

VANGUARD CAPITAL MANAGEMENT LLC

CIK 2100119

Shares

8.23M

Value

121.42M

Filed

Jun 30, 2026

6

CITADEL ADVISORS LLC

CIK 1423053

Shares

6.61M

Value

97.49M

Filed

Jun 30, 2026

7

GEODE CAPITAL MANAGEMENT, LLC

CIK 1214717

Shares

4.88M

Value

72.11M

Filed

Jun 30, 2026

8

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

CIK 1081019

Shares

2.99M

Value

202.37K

Filed

Jun 30, 2026

9

ANSON FUNDS MANAGEMENT LP

CIK 1491072

Shares

2.65M

Value

39.05M

Filed

Jun 30, 2026

10

JONES FINANCIAL COMPANIES LLLP

CIK 815917

Shares

2.30M

Value

28.55M

Filed

Jun 30, 2026

11

CALIGAN PARTNERS LP

CIK 1727492

Shares

2.30M

Value

3.70M

Filed

Sep 30, 2025

12

VANGUARD PORTFOLIO MANAGEMENT LLC

CIK 2100121

Shares

2.16M

Value

31.90M

Filed

Jun 30, 2026

13

MARSHALL WACE, LLP

CIK 1318757

Shares

2.04M

Value

8.62M

Filed

Mar 31, 2026

14

NORTHERN TRUST CORP

CIK 73124

Shares

1.62M

Value

23.91M

Filed

Jun 30, 2026

15

PERCEPTIVE ADVISORS LLC

CIK 1224962

Shares

1.50M

Value

22.14M

Filed

Jun 30, 2026

16

ALYESKA INVESTMENT GROUP, L.P.

CIK 1453072

Shares

1.48M

Value

1.76M

Filed

Jun 30, 2024

17

JANE STREET GROUP, LLC

CIK 1595888

Shares

1.42M

Value

20.97M

Filed

Jun 30, 2026

18

VANGUARD FIDUCIARY TRUST CO

CIK 933478

Shares

1.34M

Value

19.71M

Filed

Jun 30, 2026

19

UBS GROUP AG

CIK 1610520

Shares

1.25M

Value

18.49M

Filed

Jun 30, 2026

20

MORGAN STANLEY

CIK 895421

Shares

1.24M

Value

18.25M

Filed

Jun 30, 2026

Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.