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Schedule 13G

SLS Schedule 13G filing by State Street

State Street reported beneficial ownership of 13.0M shares, representing 7% of SELLAS LIFE SCIENCES GROUP I in this filing.

FiledAug 7, 2026
Ownership dateJun 30, 2026
Reported shares13.0M
Reported ownership7%
Ownership details

Voting and dispositive power reported in the filing

These figures describe the reporting filer’s disclosed voting and investment authority. They should be read together with the reported share count and percentage.

Sole voting power 0
Shared voting power 12.7M
Sole dispositive power 0
Shared dispositive power 13.0M
Price context

Price dates alongside the ownership filing

Price data provides market context around the disclosure. It does not identify the filer’s actual transaction price.

Close near filing date$12.01as of Aug 7, 2026
Latest tracked price$11.92as of Aug 5, 2026
Source

Original filing and accession

Use the SEC filing as the primary source when you need the complete disclosure, footnotes, exhibits, or reporting-person details.

Reporting filer
State Street
CIK
CIK0000093751
Accession
0000093751-26-000539
Form
Schedule 13G
Open SEC filing View SLS ownership history
Read the filing in context

Understand what a Schedule 13 filing does—and does not—tell you.

How to read a Schedule 13G → Does a 13G mean the shares were just bought? → Filing date vs. ownership date →