SLS - CIK 0001390478
SELLAS Life Sciences Group, Inc. has filed 1,262 documents with the SEC between 2007 and 2026. The most frequent type is insider trade (377 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| Major company event | 8-K | 2026-05-12 | 2026-05-12 |
| Quarterly report | 10-Q | 2026-05-12 | 2026-03-31 |
| SCHEDULE 13G/A | - | 2026-04-24 | - |
| Annual report to shareholders | ARS | 2026-04-23 | 2025-12-31 |
| Proxy materials | DEFA14A | 2026-04-23 | - |
| Proxy statement | DEF 14A | 2026-04-23 | 2026-06-16 |
| SCHEDULE 13G/A | - | 2026-03-27 | - |
| S-3ASR | - | 2026-03-20 | - |
| Major company event | 8-K | 2026-03-19 | 2026-03-19 |
| Annual report | 10-K | 2026-03-19 | 2025-12-31 |
| Major company event | 8-K | 2026-03-11 | 2026-03-11 |
| SCHEDULE 13G/A | - | 2026-02-17 | - |
| SCHEDULE 13G/A | - | 2026-01-30 | - |
| Insider trade | 4 | 2026-01-09 | 2026-01-07 |
| Insider trade | 4 | 2026-01-09 | 2026-01-07 |
| Insider trade | 4 | 2026-01-09 | 2026-01-07 |
| Insider trade | 4 | 2026-01-09 | 2026-01-07 |
| Insider trade | 4 | 2026-01-09 | 2026-01-07 |
| Insider trade | 4 | 2026-01-09 | 2026-01-07 |
| Insider trade | 4 | 2026-01-09 | 2026-01-07 |
| Major company event | 8-K | 2026-01-08 | 2026-01-07 |
| Insider trade | 4 | 2025-12-05 | 2025-12-03 |
| Insider trade | 4 | 2025-12-05 | 2025-12-03 |
| Insider trade | 4 | 2025-12-05 | 2025-12-03 |
| EFFECT | - | 2025-11-25 | - |
| Company correspondence | CORRESP | 2025-11-21 | - |
| Insider trade | 4 | 2025-11-21 | 2025-11-19 |
| SCHEDULE 13G | - | 2025-11-14 | - |
| Major company event | 8-K | 2025-11-12 | 2025-11-12 |
| Quarterly report | 10-Q | 2025-11-12 | 2025-09-30 |
| Prospectus supplement | 424B5 | 2025-10-27 | - |
| Major company event | 8-K | 2025-10-27 | 2025-10-24 |
| SCHEDULE 13G | - | 2025-10-17 | - |
| Securities registration | S-3 | 2025-10-10 | - |
| Major company event | 8-K | 2025-10-03 | 2025-10-01 |
| Major company event | 8-K | 2025-09-11 | 2025-09-10 |
| SCHEDULE 13G/A | - | 2025-08-14 | - |
| Major company event | 8-K | 2025-08-12 | 2025-08-12 |
| Quarterly report | 10-Q | 2025-08-12 | 2025-06-30 |
| Employee stock plan | S-8 | 2025-08-12 | - |
| SCHEDULE 13G | - | 2025-07-29 | - |
| Major company event | 8-K | 2025-06-18 | 2025-06-17 |
| Insider trade | 4 | 2025-06-13 | 2025-06-12 |
| Proxy materials | DEFA14A | 2025-06-10 | - |
| Major company event | 8-K | 2025-06-06 | 2025-06-03 |
| Insider trade | 4 | 2025-06-02 | 2025-05-30 |
| Insider trade | 4 | 2025-05-22 | 2025-05-22 |
| SCHEDULE 13G | - | 2025-05-15 | - |
| Major company event | 8-K | 2025-05-13 | 2025-05-13 |
| Quarterly report | 10-Q | 2025-05-13 | 2025-03-31 |