Compass Therapeutics, Inc. SEC filings CMPX
Compass Therapeutics, Inc. has 359 filings in SEC EDGAR's recent list, going back to May 30, 2018. Its latest annual report, Form ARS, was filed on Apr 29, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 6, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Sep 22, 2026 (regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Regulation FD disclosure
|
Sep 22, 2026 | Sep 22, 2026 |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 6, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jul 1, 2026 | Jul 1, 2026 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Jun 23, 2026 | Jun 22, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 11, 2026 | Jun 10, 2026 |
| 10-Q | Quarterly report | May 5, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 5, 2026 | May 5, 2026 |
| ARS | Annual report to shareholders | Apr 29, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 29, 2026 | — |
| DEF 14A | Proxy statement | Apr 29, 2026 | Jun 10, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Apr 27, 2026 | Apr 27, 2026 |
| S-8 | Employee stock plan registration | Mar 12, 2026 | — |
| 10-K | Annual report | Mar 5, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 5, 2026 | Mar 5, 2026 |
| EFFECT | Filing | Jan 7, 2026 | — |
| 8-K |
Current report
Results of operations, Other events
|
Jan 6, 2026 | Jan 6, 2026 |
| CORRESP | Letter to the SEC | Jan 5, 2026 | — |
| UPLOAD | Letter from the SEC | Jan 2, 2026 | — |
| DEL AM | Filing | Dec 31, 2025 | — |
| S-3 | Shelf registration | Dec 30, 2025 | — |
| 10-Q | Quarterly report | Nov 5, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2025 | Nov 5, 2025 |
| 8-K |
Current report
Material agreement, Other events
|
Aug 13, 2025 | Aug 12, 2025 |
| 424B5 | Prospectus supplement | Aug 13, 2025 | — |
| 424B5 | Prospectus supplement | Aug 12, 2025 | — |
| 10-Q | Quarterly report | Aug 11, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 11, 2025 | Aug 11, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jun 12, 2025 | Jun 11, 2025 |
| 10-Q | Quarterly report | May 8, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 8, 2025 | May 8, 2025 |
| DEFA14A | Additional proxy material | Apr 29, 2025 | — |
| ARS | Annual report to shareholders | Apr 29, 2025 | Dec 31, 2024 |
| DEF 14A | Proxy statement | Apr 29, 2025 | Jun 11, 2025 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Apr 1, 2025 | Apr 1, 2025 |
| S-8 | Employee stock plan registration | Mar 27, 2025 | — |
| 10-K | Annual report | Feb 27, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 27, 2025 | Feb 27, 2025 |
| 8-K |
Current report
Results of operations, Other events
|
Jan 8, 2025 | Jan 8, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Dec 10, 2024 | Dec 9, 2024 |
| 10-Q | Quarterly report | Nov 12, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2024 | Nov 12, 2024 |
| EFFECT | Filing | Sep 6, 2024 | — |
| CORRESP | Letter to the SEC | Sep 4, 2024 | — |
| UPLOAD | Letter from the SEC | Sep 3, 2024 | — |
| S-3 | Shelf registration | Aug 30, 2024 | — |
| 10-Q | Quarterly report | Aug 12, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 12, 2024 | Aug 12, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Jun 17, 2024 | Jun 13, 2024 |
| DEFA14A | Additional proxy material | May 29, 2024 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
May 28, 2024 | May 28, 2024 |
| 10-Q | Quarterly report | May 13, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 13, 2024 | May 13, 2024 |
| ARS | Annual report to shareholders | Apr 29, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 29, 2024 | — |
| DEF 14A | Proxy statement | Apr 29, 2024 | Jun 13, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 25, 2024 | Apr 25, 2024 |
| 10-K | Annual report | Mar 21, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 21, 2024 | Mar 21, 2024 |
| 8-K |
Current report
Officer or director change, Other events
|
Jan 9, 2024 | Jan 8, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 5, 2024 | Jan 5, 2024 |
| 10-Q | Quarterly report | Nov 9, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2023 | Nov 9, 2023 |
| 10-Q | Quarterly report | Aug 3, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 3, 2023 | Aug 3, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Jun 15, 2023 | Jun 15, 2023 |
| 10-Q | Quarterly report | May 4, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 4, 2023 | May 4, 2023 |
| ARS | Annual report to shareholders | Apr 27, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Apr 27, 2023 | — |
| DEF 14A | Proxy statement | Apr 27, 2023 | Jun 15, 2023 |
| 8-K |
Current report
Officer or director change
|
Apr 24, 2023 | Apr 21, 2023 |
| 10-K | Annual report | Mar 15, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 10, 2023 | Mar 10, 2023 |
| 8-K |
Current report
Officer or director change
|
Feb 24, 2023 | Feb 20, 2023 |
| 8-K |
Current report
Officer or director change
|
Feb 10, 2023 | Feb 8, 2023 |
| 424B3 | Prospectus | Jan 24, 2023 | — |
| EFFECT | Filing | Jan 20, 2023 | — |
| 8-K |
Current report
Other events
|
Jan 19, 2023 | Jan 19, 2023 |
| CORRESP | Letter to the SEC | Jan 19, 2023 | — |
| CORRESP | Letter to the SEC | Jan 17, 2023 | — |
| CORRESP | Letter to the SEC | Jan 13, 2023 | — |
| UPLOAD | Letter from the SEC | Dec 7, 2022 | — |
| S-3 | Shelf registration | Dec 2, 2022 | — |
| 8-K |
Current report
Officer or director change
|
Nov 29, 2022 | Nov 29, 2022 |
| 10-Q | Quarterly report | Nov 9, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Officer or director change
|
Nov 2, 2022 | Nov 2, 2022 |
| 8-K |
Current report
Officer or director change
|
Aug 19, 2022 | Aug 17, 2022 |
| 424B5 | Prospectus supplement | Aug 1, 2022 | — |
| 8-K |
Current report
Material agreement, Agreement ended
|
Aug 1, 2022 | Jul 22, 2022 |
| 10-Q | Quarterly report | Aug 1, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Shareholder vote results
|
May 31, 2022 | May 31, 2022 |
| DEFA14A | Additional proxy material | May 18, 2022 | — |
| 10-Q | Quarterly report | May 9, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
May 4, 2022 | May 4, 2022 |
| DEF 14A | Proxy statement | Apr 28, 2022 | May 24, 2022 |
| 8-K |
Current report
Officer or director change
|
Apr 26, 2022 | Apr 22, 2022 |
| 10-K | Annual report | Mar 18, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Officer or director change
|
Feb 25, 2022 | Feb 22, 2022 |
| 8-K |
Current report
Other events
|
Jan 20, 2022 | Jan 20, 2022 |
| 8-K |
Current report
Officer or director change
|
Dec 21, 2021 | Dec 20, 2021 |
| 424B5 | Prospectus supplement | Dec 15, 2021 | — |
| 424B5 | Prospectus supplement | Dec 15, 2021 | — |
| 10-Q | Quarterly report | Nov 12, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Material agreement, Other events
|
Nov 3, 2021 | Nov 1, 2021 |
| 424B5 | Prospectus supplement | Nov 3, 2021 | — |
| CERT | Filing | Nov 1, 2021 | — |
| 424B5 | Prospectus supplement | Nov 1, 2021 | — |
| 8-A12B | Filing | Nov 1, 2021 | — |
| 8-K |
Current report
Results of operations, Other events
|
Nov 1, 2021 | Nov 1, 2021 |
| 8-K |
Current report
Other events
|
Oct 8, 2021 | Oct 8, 2021 |
| 10-Q | Quarterly report | Aug 16, 2021 | Jun 30, 2021 |
| 8-K/A | Amended current report | Aug 5, 2021 | Jun 25, 2021 |
| EFFECT | Filing | Jul 20, 2021 | — |
| CORRESP | Letter to the SEC | Jul 16, 2021 | — |
| UPLOAD | Letter from the SEC | Jul 15, 2021 | — |
| S-3 | Shelf registration | Jul 9, 2021 | — |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, New debt, Unregistered share sale, Officer or director change, Other events
|
Jun 30, 2021 | Jun 25, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Jun 4, 2021 | Jun 3, 2021 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
May 13, 2021 | May 13, 2021 |
| 424B3 | Prospectus | Apr 30, 2021 | — |
| 10-Q | Quarterly report | Apr 30, 2021 | Mar 31, 2021 |
| DEF 14A | Proxy statement | Apr 29, 2021 | Jun 3, 2021 |
| 8-K |
Current report
Officer or director change
|
Apr 19, 2021 | Apr 14, 2021 |
| 424B3 | Prospectus | Mar 11, 2021 | — |
| EFFECT | Filing | Mar 8, 2021 | — |
| POS AM | Filing | Mar 5, 2021 | — |
| 10-K | Annual report | Mar 5, 2021 | Dec 31, 2020 |
| S-8 | Employee stock plan registration | Jan 14, 2021 | — |
| 8-K |
Current report
Material agreement, New debt
|
Dec 17, 2020 | Dec 12, 2020 |
| RW | Registration withdrawal | Nov 13, 2020 | — |
| CERT | 8a cert | Nov 12, 2020 | — |
| 8-A12B | Filing | Nov 10, 2020 | — |
| 424B3 | Prospectus | Nov 9, 2020 | — |
| S-1/A | Amended registration statement | Nov 9, 2020 | — |
| 10-Q | Quarterly report | Nov 9, 2020 | Sep 30, 2020 |
| S-1 | Registration statement | Oct 19, 2020 | — |
| EFFECT | Filing | Sep 25, 2020 | — |
| 424B3 | Prospectus | Sep 25, 2020 | — |
| CORRESP | Letter to the SEC | Sep 23, 2020 | — |
| DRS | Filing | Sep 23, 2020 | — |
| S-1/A | Amended registration statement | Sep 18, 2020 | — |
| 8-K |
Current report
Officer or director change
|
Sep 15, 2020 | Sep 10, 2020 |
| UPLOAD | Letter from the SEC | Aug 14, 2020 | — |
| 10-Q | Quarterly report | Aug 13, 2020 | Jun 30, 2020 |
| S-1 | Registration statement | Aug 11, 2020 | — |
| UPLOAD | Letter from the SEC | Aug 11, 2020 | — |
| CORRESP | Letter to the SEC | Jul 31, 2020 | — |
| 8-K/A |
Amended current report
Acquisition or sale of assets
|
Jul 31, 2020 | Jun 17, 2020 |
| UPLOAD | Letter from the SEC | Jul 17, 2020 | — |
| D | Filing | Jul 1, 2020 | — |
| D | Filing | Jul 1, 2020 | — |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Unregistered share sale, Auditor change, Change in control, Officer or director change, Bylaw or fiscal year change
|
Jun 23, 2020 | Jun 17, 2020 |
| 10-K | Annual report | Jun 8, 2020 | Mar 31, 2020 |
| SC 14F1/A | Form sc 14f1/a | May 28, 2020 | — |
| SC 14F1 | Schedule 14f-1 | May 27, 2020 | — |
| 10-Q | Quarterly report | Feb 14, 2020 | Dec 31, 2019 |
| 10-Q | Quarterly report | Nov 13, 2019 | Sep 30, 2019 |
| 10-Q | Quarterly report | Aug 13, 2019 | Jun 30, 2019 |
| 10-K | Annual report | Jul 1, 2019 | Mar 31, 2019 |
| 10-Q | Quarterly report | Feb 14, 2019 | Dec 31, 2018 |
| 10-Q | Quarterly report | Nov 14, 2018 | Sep 30, 2018 |
| 10-Q | Quarterly report | Aug 14, 2018 | Jun 30, 2018 |
| 10-12G | General form for registration of securities | May 30, 2018 | — |
Showing 164 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Biological Products, (No Diagnostic Substances) (SIC 2836)
- Listed as
- CMPX (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Boston, MA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1738021
- Former names
- Olivia Ventures, Inc. (until Jun 8, 2020)
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All 182 Biological Products, (No Diagnostic Substances) companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.