Sellas Life Sciences SEC Filings https://ir.sellaslifesciences.com/generated by Q4Tue, 12 May 2026 16:08:12 -0400Copyright Q4 Inc. All rights reserved.Sellas Life Sciences - 8-K - Current report filing19435427https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19435427Tue, 12 May 2026 00:00:00 -0400Sellas Life Sciences - 10-Q - Quarterly Report19435224https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19435224Tue, 12 May 2026 00:00:00 -0400Sellas Life Sciences - SC 13G/A - Amended Statement of Ownership19368682https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19368682Fri, 24 Apr 2026 00:00:00 -0400Sellas Life Sciences - ARS - Annual Report to Security Holders19364351https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19364351Thu, 23 Apr 2026 00:00:00 -0400Sellas Life Sciences - DEF 14A - Proxy Statement (definitive)19364289https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19364289Thu, 23 Apr 2026 00:00:00 -0400Sellas Life Sciences - DEFA14A - Additional Proxy Soliciting Materials (definitive)19364310https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19364310Thu, 23 Apr 2026 00:00:00 -0400Sellas Life Sciences - SC 13G/A - Amended Statement of Ownership19292228https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19292228Fri, 27 Mar 2026 00:00:00 -0400Sellas Life Sciences - S-3ASR - Automatic shelf registration statement of securities of well-known seasoned issuers19273001https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19273001Fri, 20 Mar 2026 00:00:00 -0400Sellas Life Sciences - 8-K - Current report filing19268725https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19268725Thu, 19 Mar 2026 00:00:00 -0400Sellas Life Sciences - 10-K - Annual Report19268539https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19268539Thu, 19 Mar 2026 00:00:00 -0400Sellas Life Sciences - 8-K - Current report filing19239579https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19239579Wed, 11 Mar 2026 00:00:00 -0400Sellas Life Sciences - SC 13G/A - Amended Statement of Ownership19152133https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19152133Tue, 17 Feb 2026 00:00:00 -0500Sellas Life Sciences - SC 13G/A - Amended Statement of Ownership19103226https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19103226Fri, 30 Jan 2026 00:00:00 -0500Sellas Life Sciences - 4 - Statement of Changes in Beneficial Ownership19054092https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19054092Fri, 09 Jan 2026 00:00:00 -0500Sellas Life Sciences - 4 - Statement of Changes in Beneficial Ownership19054042https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19054042Fri, 09 Jan 2026 00:00:00 -0500Sellas Life Sciences - 4 - Statement of Changes in Beneficial Ownership19054053https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19054053Fri, 09 Jan 2026 00:00:00 -0500Sellas Life Sciences - 4 - Statement of Changes in Beneficial Ownership19053932https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19053932Fri, 09 Jan 2026 00:00:00 -0500Sellas Life Sciences - 4 - Statement of Changes in Beneficial Ownership19054013https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19054013Fri, 09 Jan 2026 00:00:00 -0500Sellas Life Sciences - 4 - Statement of Changes in Beneficial Ownership19053873https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19053873Fri, 09 Jan 2026 00:00:00 -0500Sellas Life Sciences - 4 - Statement of Changes in Beneficial Ownership19053909https://ir.sellaslifesciences.com/sec-filings/sec-filings-details/default.aspx?FilingId=19053909Fri, 09 Jan 2026 00:00:00 -0500