HIGHBRIDGE CAPITAL MANAGEMENT LLC - 31 Dec 2025 SCHEDULE 13G/A Report for SELLAS Life Sciences Group, Inc. Common Stock, par value $0.0001 per share (SLS)

Filing Manager
HIGHBRIDGE CAPITAL MANAGEMENT LLC
Reporting Manager
Highbridge Capital Management, LLC
Security
SELLAS Life Sciences Group, Inc. Common Stock, par value $0.0001 per share
Symbol
SLS
Shares outstanding
176,071,838 shares
Disclosed Ownership
6,514,658 shares
Ownership
3.7%
Form type
SCHEDULE 13G/A
Filing time
30 Jan 2026, 16:15:04 UTC
Date of event
31 Dec 2025
SEC
View on sec.gov

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Quoteable Key Fact

"HIGHBRIDGE CAPITAL MANAGEMENT LLC disclosed 3.7% ownership in SELLAS Life Sciences Group, Inc. Common Stock, par value $0.0001 per share (SLS) on 31 Dec 2025."

Quick Takeaways

  • HIGHBRIDGE CAPITAL MANAGEMENT LLC filed SCHEDULE 13G/A for SELLAS Life Sciences Group, Inc. Common Stock, par value $0.0001 per share (SLS).
  • Disclosed ownership: 3.7%.
  • Date of event: 31 Dec 2025.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 30 Jan 2026, 16:15.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Official SEC Source

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (1)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Highbridge Capital Management, LLC 3.7% 6,514,658 6,514,658 0 /s/ Kirk Rule Kirk Rule, Executive Director

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