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SELLAS Life Sciences Group SEC Filings

NASDAQ: SLSHealth CareBiotechnology: Pharmaceutical PreparationsUSD

11.65+0.39 (+3.46%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

SELLAS Life Sciences Group filing overview

This page lists 60 recent SEC filings by SELLAS Life Sciences Group (SLS), including 21 8-K, 17 4, 6 SCHEDULE 13G, 5 10-Q. The latest annual report (10-K) was filed on Mar 19, 2026 for the period ending Dec 31, 2025. The most recent quarterly report (10-Q) was filed on Aug 11, 2026.

The latest current report (8-K), used to disclose material events such as earnings releases and executive changes, was filed on Aug 11, 2026. Form 10-K is the audited annual report, 10-Q the quarterly report, 8-K covers material events, and Form 4 reports insider transactions. All documents link directly to SEC EDGAR.

Summary generated from market data by MetaCap's automated system. Methodology

SLS SEC filings

SELLAS Life Sciences Group SEC filings
FiledFormDescriptionDocument
Aug 11, 202610-QQuarterly reportView on EDGAR
Aug 11, 20268-KResults of Operations and Financial ConditionView on EDGAR
Aug 7, 2026SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Jul 31, 2026SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Jul 27, 20268-KResults of Operations and Financial Condition; Other EventsView on EDGAR
Jun 25, 20268-KDeparture or Appointment of Directors or Officers; Compensatory ArrangementsView on EDGAR
Jun 18, 20264OWNERSHIP DOCUMENTView on EDGAR
Jun 18, 20268-KSubmission of Matters to a Vote of Security HoldersView on EDGAR
Jun 2, 20268-KOther EventsView on EDGAR
May 12, 202610-QQuarterly reportView on EDGAR
May 12, 20268-KResults of Operations and Financial ConditionView on EDGAR
Apr 24, 2026SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
Apr 23, 2026DEF 14AFORM- DEF 14AView on EDGAR
Mar 27, 2026SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
Mar 19, 202610-KAnnual reportView on EDGAR
Mar 19, 20268-KResults of Operations and Financial ConditionView on EDGAR
Mar 11, 20268-KOther EventsView on EDGAR
Feb 17, 2026SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
Jan 30, 2026SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
Jan 9, 20264OWNERSHIP DOCUMENTView on EDGAR
Jan 9, 20264OWNERSHIP DOCUMENTView on EDGAR
Jan 9, 20264OWNERSHIP DOCUMENTView on EDGAR
Jan 9, 20264OWNERSHIP DOCUMENTView on EDGAR
Jan 9, 20264OWNERSHIP DOCUMENTView on EDGAR
Jan 9, 20264OWNERSHIP DOCUMENTView on EDGAR
Jan 9, 20264OWNERSHIP DOCUMENTView on EDGAR
Jan 8, 20268-KResults of Operations and Financial Condition; Other EventsView on EDGAR
Dec 5, 20254OWNERSHIP DOCUMENTView on EDGAR
Dec 5, 20254OWNERSHIP DOCUMENTView on EDGAR
Dec 5, 20254OWNERSHIP DOCUMENTView on EDGAR
Nov 21, 20254OWNERSHIP DOCUMENTView on EDGAR
Nov 14, 2025SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Nov 12, 202510-QQuarterly reportView on EDGAR
Nov 12, 20258-KResults of Operations and Financial ConditionView on EDGAR
Oct 27, 20258-KEntry into a Material Definitive Agreement; Other EventsView on EDGAR
Oct 27, 2025424B5ProspectusView on EDGAR
Oct 17, 2025SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Oct 3, 20258-KEntry into a Material Definitive AgreementView on EDGAR
Sep 11, 20258-KEntry into a Material Definitive Agreement; Unregistered Sales of Equity Securities; Other EventsView on EDGAR
Aug 14, 2025SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
Aug 12, 202510-QQuarterly reportView on EDGAR
Aug 12, 20258-KResults of Operations and Financial ConditionView on EDGAR
Jul 29, 2025SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
Jun 18, 20258-KSubmission of Matters to a Vote of Security HoldersView on EDGAR
Jun 13, 20254OWNERSHIP DOCUMENTView on EDGAR
Jun 6, 20258-KChanges in Registrant's Certifying AccountantView on EDGAR
Jun 2, 20254OWNERSHIP DOCUMENTView on EDGAR
May 22, 20254OWNERSHIP DOCUMENTView on EDGAR
May 15, 2025SCHEDULE 13GBeneficial ownership report (passive)View on EDGAR
May 13, 202510-QQuarterly reportView on EDGAR
May 13, 20258-KResults of Operations and Financial ConditionView on EDGAR
Apr 23, 2025DEF 14ADefinitive proxy statementView on EDGAR
Mar 20, 202510-KAnnual reportView on EDGAR
Mar 20, 20258-KResults of Operations and Financial ConditionView on EDGAR
Jan 29, 20258-KEntry into a Material Definitive Agreement; Other EventsView on EDGAR
Jan 29, 2025424B5ProspectusView on EDGAR
Jan 23, 20258-KRegulation FD DisclosureView on EDGAR
Jan 16, 20258-KDeparture or Appointment of Directors or Officers; Compensatory ArrangementsView on EDGAR
Jan 14, 20254OWNERSHIP DOCUMENTView on EDGAR
Jan 14, 20254OWNERSHIP DOCUMENTView on EDGAR

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