SELLAS Life Sciences Group, Inc. — All Filings
1,000 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
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3
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424B2
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425
5
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8-K
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D
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S-1
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SC 13D
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SCHEDULE 13G
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UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SCHEDULE 13G/A | — | 0000102909-26-002236 | Mar 27, 2026 | — |
| S-3ASR | S-3ASR | 0001104659-26-032776 | Mar 20, 2026 | — |
| 10-K | 10-K | 0001390478-26-000003 | Mar 19, 2026 | Dec 31, 2025 |
| 8-K | 8-K | 0001390478-26-000004 | Mar 19, 2026 | — |
| 8-K | FORM 8-K | 0001104659-26-026384 | Mar 11, 2026 | — |
| SCHEDULE 13G/A | — | 0001193125-26-053508 | Feb 17, 2026 | — |
| SCHEDULE 13G/A | — | 0000902664-26-000615 | Jan 30, 2026 | — |
| 4 | OWNERSHIP DOCUMENT | 0001104659-26-002502 | Jan 9, 2026 | Jan 7, 2026 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-26-002515 | Jan 9, 2026 | Jan 7, 2026 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-26-002499 | Jan 9, 2026 | Jan 7, 2026 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-26-002506 | Jan 9, 2026 | Jan 7, 2026 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-26-002509 | Jan 9, 2026 | Jan 7, 2026 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-26-002511 | Jan 9, 2026 | Jan 7, 2026 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-26-002491 | Jan 9, 2026 | Jan 7, 2026 |
| 8-K | FORM 8-K | 0001104659-26-001957 | Jan 8, 2026 | Jan 7, 2026 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-118882 | Dec 5, 2025 | Dec 3, 2025 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-118872 | Dec 5, 2025 | Dec 3, 2025 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-118878 | Dec 5, 2025 | Dec 3, 2025 |
| EFFECT | — | 9999999995-25-003386 | Nov 25, 2025 | — |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-114806 | Nov 21, 2025 | Nov 19, 2025 |
| CORRESP | — | 0001104659-25-114977 | Nov 21, 2025 | — |
| SCHEDULE 13G | — | 0001193125-25-282690 | Nov 14, 2025 | — |
| 10-Q | 10-Q | 0001390478-25-000020 | Nov 12, 2025 | Sep 30, 2025 |
| 8-K | 8-K | 0001390478-25-000021 | Nov 12, 2025 | — |
| 424B5 | 424B5 | 0001104659-25-102602 | Oct 27, 2025 | — |
| 8-K | FORM 8-K | 0001104659-25-102345 | Oct 27, 2025 | Oct 24, 2025 |
| SCHEDULE 13G | — | 0002012383-25-002700 | Oct 17, 2025 | — |
| S-3 | FORM S-3 | 0001104659-25-098711 | Oct 10, 2025 | — |
| 8-K | FORM 8-K | 0001104659-25-096643 | Oct 3, 2025 | Oct 1, 2025 |
| 8-K | FORM 8-K | 0001104659-25-089272 | Sep 11, 2025 | Sep 10, 2025 |
| SCHEDULE 13G/A | — | 0000950170-25-109205 | Aug 14, 2025 | — |
| S-8 | FORM S-8 | 0001104659-25-076886 | Aug 12, 2025 | — |
| 10-Q | 10-Q | 0001390478-25-000016 | Aug 12, 2025 | Jun 30, 2025 |
| 8-K | 8-K | 0001390478-25-000017 | Aug 12, 2025 | — |
| SCHEDULE 13G | — | 0000932471-25-000733 | Jul 29, 2025 | — |
| 8-K | FORM 8-K | 0001104659-25-060704 | Jun 18, 2025 | Jun 17, 2025 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-059166 | Jun 13, 2025 | Jun 12, 2025 |
| DEFA14A | DEFA14A | 0001104659-25-058140 | Jun 10, 2025 | — |
| 8-K | FORM 8-K | 0001104659-25-057308 | Jun 6, 2025 | Jun 3, 2025 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-055495 | Jun 2, 2025 | May 30, 2025 |
| 4 | OWNERSHIP DOCUMENT | 0001104659-25-051980 | May 22, 2025 | — |
| SCHEDULE 13G | — | 0000950170-25-072815 | May 15, 2025 | — |
| 10-Q | 10-Q | 0001390478-25-000008 | May 13, 2025 | Mar 31, 2025 |
| 8-K | 8-K | 0001390478-25-000009 | May 13, 2025 | — |
| DEF 14A | DEF 14A | 0001104659-25-038039 | Apr 23, 2025 | Jun 17, 2025 |
| DEFA14A | DEFA14A | 0001104659-25-038045 | Apr 23, 2025 | — |
| ARS | ARS | 0001104659-25-038046 | Apr 23, 2025 | Dec 31, 2024 |
| 10-K | 10-K | 0001390478-25-000003 | Mar 20, 2025 | Dec 31, 2024 |
| 8-K | 8-K | 0001390478-25-000004 | Mar 20, 2025 | — |
| 8-K | FORM 8-K | 0001104659-25-007049 | Jan 29, 2025 | Jan 28, 2025 |