Anson Funds Management LP - 30 Sep 2025 SCHEDULE 13G Report for SELLAS Life Sciences Group, Inc. Common Stock, par value $0.0001 per share (SLS)

Filing Manager
Anson Funds Management LP
Reporting Manager
Anson Funds Management LP
Security
SELLAS Life Sciences Group, Inc. Common Stock, par value $0.0001 per share
Symbol
SLS
Shares outstanding
105,841,018 shares
Disclosed Ownership
6,032,938 shares
Ownership
5.7%
Form type
SCHEDULE 13G
Filing time
14 Nov 2025, 15:15:23 UTC
Date of event
30 Sep 2025
Previous filing
14 Aug 2025
Next filing
17 Feb 2026
SEC
View on sec.gov

Quoteable Key Fact

"Anson Funds Management LP disclosed 5.7% ownership in SELLAS Life Sciences Group, Inc. Common Stock, par value $0.0001 per share (SLS) on 30 Sep 2025."

Quick Takeaways

  • Anson Funds Management LP filed SCHEDULE 13G for SELLAS Life Sciences Group, Inc. Common Stock, par value $0.0001 per share (SLS).
  • Disclosed ownership: 5.7%.
  • Date of event: 30 Sep 2025.

What Changed

  • Previous schedule filing date: 14 Aug 2025.
  • Current filing was accepted on 14 Nov 2025, 15:15.

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.

Source Evidence

Backed by Schedule 13D/13G

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

See Original Filing

Reporting Managers (6)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Anson Funds Management LP 5.7% 6,032,938 0 6,032,938 /s/ Tony Moore Tony Moore, Manager
Anson Management GP LLC 5.7% 6,032,938 0 6,032,938 /s/ Tony Moore Tony Moore, Manager
Tony Moore 5.7% 6,032,938 0 6,032,938 /s/ Tony Moore Tony Moore, Manager
Anson Advisors Inc. 5.7% 6,032,938 0 6,032,938 /s/ Amin Nathoo Amin Nathoo, Director
Amin Nathoo 5.7% 6,032,938 0 6,032,938 /s/ Amin Nathoo Amin Nathoo, Director
Moez Kassam 5.7% 6,032,938 0 6,032,938 /s/ Moez Kassam Moez Kassam, Director