CMPX - CIK 0001738021
Compass Therapeutics, Inc. has filed 349 documents with the SEC between 2018 and 2026. The most frequent type is insider trade (112 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 |
|---|---|---|---|
| SCHEDULE 13G/A | - | 2026-05-15 | - |
| Quarterly report | 10-Q | 2026-05-05 | 2026-03-31 |
| Major company event | 8-K | 2026-05-05 | 2026-05-05 |
| Insider trade (amended) | 4/A | 2026-04-30 | 2026-04-29 |
| Insider trade (amended) | 4/A | 2026-04-30 | 2026-04-29 |
| Insider trade | 4 | 2026-04-29 | 2026-04-29 |
| Insider trade | 4 | 2026-04-29 | 2026-04-29 |
| Annual report to shareholders | ARS | 2026-04-29 | 2025-12-31 |
| Proxy materials | DEFA14A | 2026-04-29 | - |
| Proxy statement | DEF 14A | 2026-04-29 | 2026-06-10 |
| Major company event | 8-K | 2026-04-27 | 2026-04-27 |
| Employee stock plan | S-8 | 2026-03-12 | - |
| Annual report | 10-K | 2026-03-05 | 2025-12-31 |
| Major company event | 8-K | 2026-03-05 | 2026-03-05 |
| SCHEDULE 13G/A | - | 2026-02-13 | - |
| Insider trade | 4 | 2026-02-10 | 2026-02-08 |
| SCHEDULE 13G | - | 2026-01-21 | - |
| Insider trade | 4 | 2026-01-12 | 2026-01-09 |
| EFFECT | - | 2026-01-07 | - |
| Major company event | 8-K | 2026-01-06 | 2026-01-06 |
| Company correspondence | CORRESP | 2026-01-05 | - |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| New insider ownership | 3 | 2026-01-05 | 2026-01-02 |
| New insider ownership | 3 | 2026-01-05 | 2026-01-02 |
| SEC correspondence | UPLOAD | 2026-01-02 | - |
| DEL AM | - | 2025-12-31 | - |
| Securities registration | S-3 | 2025-12-30 | - |
| Insider trade | 4 | 2025-11-18 | 2025-11-16 |
| SCHEDULE 13G/A | - | 2025-11-14 | - |
| SCHEDULE 13G/A | - | 2025-11-14 | - |
| SCHEDULE 13G | - | 2025-11-14 | - |
| Quarterly report | 10-Q | 2025-11-05 | 2025-09-30 |
| Major company event | 8-K | 2025-11-05 | 2025-11-05 |
| SCHEDULE 13G | - | 2025-10-29 | - |
| SCHEDULE 13G/A | - | 2025-08-21 | - |
| SCHEDULE 13D/A | - | 2025-08-18 | - |
| SCHEDULE 13D/A | - | 2025-08-15 | - |
| SCHEDULE 13G/A | - | 2025-08-14 | - |
| SCHEDULE 13G/A | - | 2025-08-14 | - |