Browse the latest SEC filings and forms submitted by Compass Therapeutics, Inc. (CMPX). Access annual reports, quarterly statements, and other official disclosures.
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Search Company Filings →| Form | Filing Date | Description | Link |
|---|---|---|---|
| S-8 | March 12, 2026 | S-8 | View Document |
| 10-K | March 5, 2026 | FORM 10-K | View Document |
| 8-K | March 5, 2026 | FORM 8-K | View Document |
| SCHEDULE 13G/A | Feb. 13, 2026 | - | View Document |
| 4 | Feb. 10, 2026 | - | View Document |
| SCHEDULE 13G | Jan. 21, 2026 | - | View Document |
| 4 | Jan. 12, 2026 | - | View Document |
| EFFECT | Jan. 7, 2026 | - | View Document |
| 8-K | Jan. 6, 2026 | FORM 8-K | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| 3 | Jan. 5, 2026 | - | View Document |
| 3 | Jan. 5, 2026 | - | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| 4 | Jan. 5, 2026 | - | View Document |
| CORRESP | Jan. 5, 2026 | - | View Document |
| UPLOAD | Jan. 2, 2026 | - | View Document |
| DEL AM | Dec. 31, 2025 | DEL AM | View Document |
| S-3 | Dec. 30, 2025 | S-3 | View Document |
| 4 | Nov. 18, 2025 | - | View Document |
| SCHEDULE 13G/A | Nov. 14, 2025 | - | View Document |
| SCHEDULE 13G | Nov. 14, 2025 | - | View Document |
| SCHEDULE 13G/A | Nov. 14, 2025 | - | View Document |
| 10-Q | Nov. 5, 2025 | FORM 10-Q | View Document |
| 8-K | Nov. 5, 2025 | FORM 8-K | View Document |
| SCHEDULE 13G | Oct. 29, 2025 | - | View Document |
| SCHEDULE 13G/A | Aug. 21, 2025 | - | View Document |
| SCHEDULE 13D/A | Aug. 18, 2025 | - | View Document |
| SCHEDULE 13D/A | Aug. 15, 2025 | - | View Document |
| SCHEDULE 13G/A | Aug. 14, 2025 | - | View Document |
| SCHEDULE 13G/A | Aug. 14, 2025 | - | View Document |
| SCHEDULE 13G/A | Aug. 14, 2025 | - | View Document |
| 424B5 | Aug. 13, 2025 | 424B5 | View Document |
| 8-K | Aug. 13, 2025 | 8-K | View Document |
| SCHEDULE 13G | Aug. 13, 2025 | - | View Document |
| SCHEDULE 13G/A | Aug. 12, 2025 | - | View Document |
| 424B5 | Aug. 12, 2025 | 424B5 | View Document |
| 10-Q | Aug. 11, 2025 | FORM 10-Q | View Document |
| 8-K | Aug. 11, 2025 | FORM 8-K | View Document |
| 8-K | June 12, 2025 | FORM 8-K | View Document |
| 4 | May 27, 2025 | - | View Document |
| SCHEDULE 13G/A | May 15, 2025 | - | View Document |
| 8-K | May 8, 2025 | FORM 8-K | View Document |
| 10-Q | May 8, 2025 | FORM 10-Q | View Document |
| DEFA14A | April 29, 2025 | FORM DEFA14A | View Document |
| DEF 14A | April 29, 2025 | DEF 14A | View Document |
| ARS | April 29, 2025 | FORM ARS | View Document |
| 4 | April 11, 2025 | - | View Document |
| SCHEDULE 13D/A | April 11, 2025 | - | View Document |
| 4 | April 11, 2025 | - | View Document |
| 144 | April 9, 2025 | - | View Document |
| 144 | April 9, 2025 | - | View Document |
| 4 | April 8, 2025 | - | View Document |
| 4 | April 8, 2025 | - | View Document |
| 8-K | April 1, 2025 | FORM 8-K | View Document |
| S-8 | March 27, 2025 | S-8 | View Document |
| 8-K | Feb. 27, 2025 | FORM 8-K | View Document |
| 10-K | Feb. 27, 2025 | FORM 10-K | View Document |
| SCHEDULE 13G | Feb. 14, 2025 | - | View Document |
| 4 | Feb. 13, 2025 | - | View Document |
| 4 | Feb. 13, 2025 | - | View Document |
| 4 | Feb. 13, 2025 | - | View Document |
| 4 | Feb. 13, 2025 | - | View Document |
| 4 | Feb. 13, 2025 | - | View Document |
| 4 | Feb. 13, 2025 | - | View Document |
| 4 | Feb. 13, 2025 | - | View Document |
| 4 | Feb. 13, 2025 | - | View Document |
| 4 | Feb. 13, 2025 | - | View Document |
| 4 | Feb. 13, 2025 | - | View Document |
| SCHEDULE 13G/A | Feb. 12, 2025 | - | View Document |
| 4 | Feb. 11, 2025 | - | View Document |
| SCHEDULE 13G | Jan. 16, 2025 | - | View Document |
| 4 | Jan. 13, 2025 | - | View Document |
| 8-K | Jan. 8, 2025 | FORM 8-K | View Document |
| 3 | Dec. 10, 2024 | - | View Document |
| 8-K | Dec. 10, 2024 | FORM 8-K | View Document |
| 3 | Dec. 10, 2024 | - | View Document |
| 4 | Dec. 10, 2024 | - | View Document |
| SC 13G/A | Nov. 14, 2024 | JANUS CLOSEOUT | View Document |
| 8-K | Nov. 12, 2024 | FORM 8-K | View Document |
| 10-Q | Nov. 12, 2024 | FORM 10-Q | View Document |
| EFFECT | Sept. 6, 2024 | - | View Document |
| CORRESP | Sept. 4, 2024 | - | View Document |
| UPLOAD | Sept. 3, 2024 | - | View Document |
| S-3 | Aug. 30, 2024 | S-3 | View Document |
| 4 | Aug. 14, 2024 | - | View Document |
| 8-K | Aug. 12, 2024 | FORM 8-K | View Document |
| 10-Q | Aug. 12, 2024 | FORM 10-Q | View Document |
| 3 | Aug. 9, 2024 | - | View Document |
| SC 13G | Aug. 2, 2024 | SC 13G | View Document |
| 8-K | June 17, 2024 | FORM 8-K | View Document |
| DEFA14A | May 29, 2024 | DEFINITIVE ADDITIONAL MATERIALS | View Document |
| 8-K | May 28, 2024 | FORM 8-K | View Document |
| 8-K | May 13, 2024 | FORM 8-K | View Document |
| 10-Q | May 13, 2024 | FORM 10-Q | View Document |
| DEFA14A | April 29, 2024 | DEFA14A | View Document |
| ARS | April 29, 2024 | ARS | View Document |
| DEF 14A | April 29, 2024 | DEF 14A | View Document |
| 8-K | April 25, 2024 | FORM 8-K | View Document |
| SC 13D/A | March 22, 2024 | AMENDMENT NO. 4 | View Document |
| 10-K | March 21, 2024 | FORM 10-K | View Document |
| 8-K | March 21, 2024 | FORM 8-K | View Document |
| 4 | March 11, 2024 | - | View Document |
| 4 | Feb. 14, 2024 | - | View Document |
| 4 | Feb. 14, 2024 | - | View Document |
| 4 | Feb. 14, 2024 | - | View Document |
| 4 | Feb. 14, 2024 | - | View Document |
| 4 | Feb. 14, 2024 | - | View Document |
| SC 13G/A | Feb. 9, 2024 | - | View Document |
| 4 | Feb. 9, 2024 | - | View Document |
| 4 | Feb. 9, 2024 | - | View Document |
| SC 13G/A | Feb. 7, 2024 | COMPASS THERAPEUTICS, INC. | View Document |
| SC 13G | Feb. 1, 2024 | JANUS HENDERSON GROUP PLC OWNS 6.00% OF COMPASS THERAPEUTICS, INC. | View Document |
| 4 | Jan. 10, 2024 | - | View Document |
| 4 | Jan. 10, 2024 | - | View Document |
| 8-K | Jan. 9, 2024 | FORM 8-K | View Document |
| 8-K | Jan. 5, 2024 | FORM 8-K | View Document |
| SC 13G | Nov. 27, 2023 | COMPASS THERAPEUTICS, INC. | View Document |
| 4 | Nov. 21, 2023 | - | View Document |
| 4 | Nov. 21, 2023 | - | View Document |
| 8-K | Nov. 9, 2023 | FORM 8-K | View Document |
| 10-Q | Nov. 9, 2023 | FORM 10-Q | View Document |
| 10-Q | Aug. 3, 2023 | FORM 10-Q | View Document |
| 8-K | Aug. 3, 2023 | FORM 8-K | View Document |
| 8-K | June 15, 2023 | FORM 8-K | View Document |
| 8-K | May 4, 2023 | FORM 8-K | View Document |
| 10-Q | May 4, 2023 | FORM 10-Q | View Document |
| DEF 14A | April 27, 2023 | DEF 14A | View Document |
| DEFA14A | April 27, 2023 | FORM DEFA14A | View Document |
| ARS | April 27, 2023 | ARS | View Document |
| 8-K | April 24, 2023 | FORM 8-K | View Document |
| 4 | April 24, 2023 | - | View Document |
| 3 | April 24, 2023 | - | View Document |
| 10-K | March 15, 2023 | FORM 10-K | View Document |
| 4 | March 10, 2023 | - | View Document |
| 8-K | March 10, 2023 | FORM 8-K | View Document |
| 4 | Feb. 27, 2023 | - | View Document |
| 8-K | Feb. 24, 2023 | FORM 8-K | View Document |
| 4 | Feb. 15, 2023 | - | View Document |
| SC 13G/A | Feb. 14, 2023 | - | View Document |
| SC 13G/A | Feb. 13, 2023 | SC 13G/A | View Document |
| 4 | Feb. 10, 2023 | - | View Document |
| 3 | Feb. 10, 2023 | - | View Document |
| 8-K | Feb. 10, 2023 | FORM 8-K | View Document |
| 4 | Feb. 9, 2023 | - | View Document |
| 4 | Feb. 9, 2023 | - | View Document |
| SC 13G/A | Feb. 9, 2023 | - | View Document |
| 4 | Feb. 9, 2023 | - | View Document |
| 4 | Feb. 9, 2023 | - | View Document |
| 4 | Feb. 9, 2023 | - | View Document |
| 4 | Feb. 9, 2023 | - | View Document |
| 4 | Jan. 31, 2023 | - | View Document |
| 424B3 | Jan. 24, 2023 | FORM 424B3 | View Document |
| 4 | Jan. 24, 2023 | - | View Document |
| EFFECT | Jan. 20, 2023 | - | View Document |
| CORRESP | Jan. 19, 2023 | - | View Document |
| 8-K | Jan. 19, 2023 | FORM 8-K | View Document |
| CORRESP | Jan. 17, 2023 | - | View Document |
| CORRESP | Jan. 13, 2023 | - | View Document |
| UPLOAD | Dec. 7, 2022 | - | View Document |
| S-3 | Dec. 2, 2022 | FORM S-3 | View Document |
| 8-K | Nov. 29, 2022 | FORM 8-K | View Document |
| 4 | Nov. 25, 2022 | - | View Document |
| 4 | Nov. 22, 2022 | - | View Document |
| SC 13D | Nov. 14, 2022 | SC 13D | View Document |
| 4 | Nov. 10, 2022 | - | View Document |
| 3 | Nov. 10, 2022 | FORM 3 SUBMISSION | View Document |
| 4 | Nov. 10, 2022 | - | View Document |
| SC 13D/A | Nov. 10, 2022 | AMENDMENT NO. 3 | View Document |
| 10-Q | Nov. 9, 2022 | FORM 10-Q | View Document |
| 8-K | Nov. 2, 2022 | FORM 8-K | View Document |
| 4 | Sept. 28, 2022 | - | View Document |
| 4 | Sept. 27, 2022 | - | View Document |
| 4 | Sept. 8, 2022 | - | View Document |
| 4 | Sept. 1, 2022 | - | View Document |
| 8-K | Aug. 19, 2022 | FORM 8-K | View Document |
| 4 | Aug. 17, 2022 | - | View Document |
| 4 | Aug. 10, 2022 | - | View Document |
| 4 | Aug. 2, 2022 | - | View Document |
| 10-Q | Aug. 1, 2022 | FORM 10-Q | View Document |
| 8-K | Aug. 1, 2022 | 8-K | View Document |
| 424B5 | Aug. 1, 2022 | 424B5 | View Document |
| 4 | June 21, 2022 | - | View Document |
| 4 | June 17, 2022 | - | View Document |
| 4 | June 13, 2022 | - | View Document |
| 4 | June 7, 2022 | - | View Document |
| 4 | June 1, 2022 | - | View Document |
| 8-K | May 31, 2022 | FORM 8-K | View Document |
| 4 | May 26, 2022 | - | View Document |
| 4 | May 24, 2022 | - | View Document |
| DEFA14A | May 18, 2022 | DEFA14A | View Document |
| 4 | May 17, 2022 | - | View Document |
| 4 | May 13, 2022 | - | View Document |
| 4 | May 13, 2022 | - | View Document |
| 4 | May 10, 2022 | - | View Document |
| 4 | May 10, 2022 | - | View Document |
| 4 | May 10, 2022 | - | View Document |
| 10-Q | May 9, 2022 | 10-Q | View Document |
| 8-K | May 4, 2022 | FORM 8-K | View Document |
| DEF 14A | April 28, 2022 | DEF 14A | View Document |
| 4 | April 28, 2022 | - | View Document |
| 3 | April 28, 2022 | - | View Document |
| 4 | April 28, 2022 | - | View Document |
| 3 | April 28, 2022 | - | View Document |
| 8-K | April 26, 2022 | FORM 8-K | View Document |
| 10-K | March 18, 2022 | 10-K | View Document |
| 8-K | Feb. 25, 2022 | 8-K | View Document |
| 4 | Feb. 23, 2022 | FORM 4 SUBMISSION | View Document |
| 4/A | Feb. 23, 2022 | FORM 4/A SUBMISSION | View Document |
| 4/A | Feb. 23, 2022 | FORM 4/A SUBMISSION | View Document |
| 4 | Feb. 23, 2022 | FORM 4 SUBMISSION | View Document |
| 4 | Feb. 23, 2022 | FORM 4 SUBMISSION | View Document |
| 4 | Feb. 23, 2022 | FORM 4 SUBMISSION | View Document |
| 4/A | Feb. 23, 2022 | FORM 4/A SUBMISSION | View Document |
| 4 | Feb. 18, 2022 | - | View Document |
| 4 | Feb. 18, 2022 | - | View Document |
| 4 | Feb. 18, 2022 | - | View Document |
| SC 13G/A | Feb. 15, 2022 | - | View Document |
| SC 13G/A | Feb. 9, 2022 | - | View Document |
| 8-K | Jan. 20, 2022 | FORM 8-K | View Document |
| SC 13G | Dec. 30, 2021 | - | View Document |
| 8-K | Dec. 21, 2021 | 8-K | View Document |
| SC 13G/A | Dec. 17, 2021 | - | View Document |
| 424B5 | Dec. 15, 2021 | 424B5 | View Document |
| 424B5 | Dec. 15, 2021 | 424B5 | View Document |
| 4 | Nov. 18, 2021 | FORM 4 SUBMISSION | View Document |
| 4 | Nov. 18, 2021 | FORM 4 SUBMISSION | View Document |
| 10-Q | Nov. 12, 2021 | 10-Q | View Document |
| SC 13G | Nov. 12, 2021 | SC 13G | View Document |
| SC 13D/A | Nov. 9, 2021 | AMENDMENT NO. 2 | View Document |
| 4 | Nov. 8, 2021 | - | View Document |
| 4 | Nov. 8, 2021 | - | View Document |
| 8-K | Nov. 3, 2021 | 8-K | View Document |
| 424B5 | Nov. 3, 2021 | 424B5 | View Document |
| 8-A12B | Nov. 1, 2021 | 8-A12B | View Document |
| 8-K | Nov. 1, 2021 | 8-K | View Document |
| 424B5 | Nov. 1, 2021 | 424B5 | View Document |
| CERT | Nov. 1, 2021 | - | View Document |
| 8-K | Oct. 8, 2021 | 8-K | View Document |
| 10-Q | Aug. 16, 2021 | 10-Q | View Document |
| 8-K/A | Aug. 5, 2021 | 8-K/A | View Document |
| EFFECT | July 20, 2021 | - | View Document |
| CORRESP | July 16, 2021 | - | View Document |
| UPLOAD | July 15, 2021 | - | View Document |
| SC 13D/A | July 14, 2021 | AMENDMENT NO. 1 | View Document |
| S-3 | July 9, 2021 | S-3 | View Document |
| 8-K | June 30, 2021 | 8-K | View Document |
| 4 | June 29, 2021 | PRIMARY DOCUMENT | View Document |
| 3 | June 29, 2021 | PRIMARY DOCUMENT | View Document |
| 8-K | June 4, 2021 | 8-K | View Document |
| 8-K | May 13, 2021 | 8-K | View Document |
| 4 | May 5, 2021 | FORM 4 SUBMISSION | View Document |
| 3 | May 5, 2021 | FORM 3 SUBMISSION | View Document |
| 424B3 | April 30, 2021 | 424B3 | View Document |
| 10-Q | April 30, 2021 | 10-Q | View Document |
| DEF 14A | April 29, 2021 | DEF 14A | View Document |
| 8-K | April 19, 2021 | 8-K | View Document |
| 424B3 | March 11, 2021 | 424B3 | View Document |
| EFFECT | March 8, 2021 | - | View Document |
| POS AM | March 5, 2021 | POS AM | View Document |
| 10-K | March 5, 2021 | 10-K | View Document |
| 4 | March 1, 2021 | FORM 4 SUBMISSION | View Document |
| 4 | March 1, 2021 | FORM 4 SUBMISSION | View Document |
| SC 13G/A | Feb. 8, 2021 | - | View Document |
| S-8 | Jan. 14, 2021 | FORM S-8 | View Document |
| 4 | Dec. 23, 2020 | FORM 4 SUBMISSION | View Document |
| 8-K | Dec. 17, 2020 | 8-K | View Document |
| RW | Nov. 13, 2020 | REGISTRATION WITHDRAWAL | View Document |
| CERT | Nov. 12, 2020 | 8A CERT | View Document |
| 8-A12B | Nov. 10, 2020 | 8-A12B | View Document |
| 424B3 | Nov. 9, 2020 | 424B3 | View Document |
| S-1/A | Nov. 9, 2020 | S-1/A | View Document |
| 10-Q | Nov. 9, 2020 | 10-Q | View Document |
| S-1 | Oct. 19, 2020 | S-1 | View Document |
| 424B3 | Sept. 25, 2020 | 424B3 | View Document |
| EFFECT | Sept. 25, 2020 | - | View Document |
| CORRESP | Sept. 23, 2020 | - | View Document |
| DRS | Sept. 23, 2020 | - | View Document |
| S-1/A | Sept. 18, 2020 | S-1/A | View Document |
| 8-K | Sept. 15, 2020 | 8-K | View Document |
| 4 | Sept. 14, 2020 | FORM 4 SUBMISSION | View Document |
| 3 | Sept. 14, 2020 | FORM 3 SUBMISSION | View Document |
| UPLOAD | Aug. 14, 2020 | - | View Document |
| 10-Q | Aug. 13, 2020 | 10-Q | View Document |
| UPLOAD | Aug. 11, 2020 | - | View Document |
| S-1 | Aug. 11, 2020 | S-1 | View Document |
| 4 | Aug. 10, 2020 | FORM 4 SUBMISSION | View Document |
| 4 | Aug. 10, 2020 | FORM 4 SUBMISSION | View Document |
| 4 | Aug. 10, 2020 | FORM 4 SUBMISSION | View Document |
| SC 13G | Aug. 10, 2020 | - | View Document |
| CORRESP | July 31, 2020 | - | View Document |
| 8-K/A | July 31, 2020 | AMENDMENT NO. 1 TO FORM 8-K | View Document |
| UPLOAD | July 17, 2020 | - | View Document |
| D | July 1, 2020 | - | View Document |
| D | July 1, 2020 | - | View Document |
| 3 | June 29, 2020 | PRIMARY DOCUMENT | View Document |
| SC 13G | June 29, 2020 | - | View Document |
| SC 13D | June 29, 2020 | SCHEDULE 13D | View Document |
| SC 13G | June 29, 2020 | SCH 13G | View Document |
| SC 13D | June 26, 2020 | SCHEDULE 13D | View Document |
| SC 13D | June 26, 2020 | SCHEDULE 13D | View Document |
| 3 | June 23, 2020 | OWNERSHIP DOCUMENT | View Document |
| 3 | June 23, 2020 | OWNERSHIP DOCUMENT | View Document |
| 3 | June 23, 2020 | OWNERSHIP DOCUMENT | View Document |
| 3 | June 23, 2020 | OWNERSHIP DOCUMENT | View Document |
| 3 | June 23, 2020 | OWNERSHIP DOCUMENT | View Document |
| 8-K | June 23, 2020 | CURRENT REPORT | View Document |
| 3 | June 23, 2020 | OWNERSHIP DOCUMENT | View Document |
| 3 | June 23, 2020 | OWNERSHIP DOCUMENT | View Document |
| 4 | June 23, 2020 | OWNERSHIP DOCUMENT | View Document |
| 4 | June 23, 2020 | OWNERSHIP DOCUMENT | View Document |
| 4 | June 23, 2020 | OWNERSHIP DOCUMENT | View Document |
| 4 | June 23, 2020 | OWNERSHIP DOCUMENT | View Document |
| 4 | June 23, 2020 | OWNERSHIP DOCUMENT | View Document |
| 10-K | June 8, 2020 | ANNUAL REPORT | View Document |
| SC 14F1/A | May 28, 2020 | FORM SC 14F1/A | View Document |
| SC 14F1 | May 27, 2020 | SCHEDULE 14F-1 | View Document |
| 10-Q | Feb. 14, 2020 | QUARTERLY REPORT | View Document |
| 10-Q | Nov. 13, 2019 | QUARTERLY REPORT | View Document |
| 10-Q | Aug. 13, 2019 | QUARTERLY REPORT | View Document |
| 10-K | July 1, 2019 | ANNUAL REPORT | View Document |
| 10-Q | Feb. 14, 2019 | QUARTERLY REPORT | View Document |
| SC 13G | Feb. 13, 2019 | SCHEDULE 13G | View Document |
| 10-Q | Nov. 14, 2018 | QUARTERLY REPORT | View Document |
| 10-Q | Aug. 14, 2018 | QUARTERLY REPORT | View Document |
| 3 | July 30, 2018 | - | View Document |
| 3 | July 30, 2018 | - | View Document |
| 10-12G | May 30, 2018 | GENERAL FORM FOR REGISTRATION OF SECURITIES | View Document |