Compass Minerals International, Inc.SEC Filings
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All SEC filings by Compass Minerals International, Inc. (CMP) — annual and quarterly reports, current reports, registrations, proxies and ownership forms, updated in real time.
Financials
| 10-Q | Quarterly report | View Diff | Aug 6, 2026 | |
| 10-Q | Quarterly report | View Diff | May 7, 2026 | |
| 10-Q | Quarterly report | View Diff | Feb 5, 2026 | |
| 10-K | Annual report | View Diff | Dec 11, 2025 | |
| 10-Q | Quarterly report | View Diff | Aug 11, 2025 | |
| 10-Q | Quarterly report | View Diff | May 8, 2025 | |
| 10-Q | Quarterly report | View Diff | Feb 10, 2025 | |
| 10-K | Annual report | View Diff | Dec 16, 2024 | |
| 10-Q | Quarterly report | View Diff | Oct 29, 2024 | |
| 10-Q/A | Quarterly report | View Diff | Oct 29, 2024 |
Events
| 8-K | Compass Minerals Announces Change in Operations Leadership | Aug 5, 2026 | ||
| 8-K | Compass Minerals Reports Fiscal 2026 Third-Quarter Results | Aug 5, 2026 | ||
| 8-K | Compass Minerals Reports Fiscal 2026 Second-Quarter Results | May 6, 2026 | ||
| 8-K | Regulation Fd Disclosure | Mar 24, 2026 | ||
| 8-K | Submission of Matters to a Vote of Security Holders | Mar 9, 2026 | ||
| 8-K | Compass Minerals Reports Fiscal 2026 First-Quarter Results | Feb 4, 2026 | ||
| 8-K | Other Events | Dec 23, 2025 | ||
| 8-K | Compass Minerals Announces Additions to Board of Directors | Dec 18, 2025 | ||
| 8-K | Compass Minerals Reports Fiscal Fourth-Quarter | Dec 8, 2025 | ||
| 8-K | Other Events | Aug 28, 2025 |
Registrations and Prospectuses
| S-8 | Registration of securities for employees | Aug 27, 2026 | ||
| S-8 | Registration of securities for employees | Nov 13, 2024 | ||
| 424B3 | Prospectus supplement | Sep 29, 2023 | ||
| S-3 | Shelf registration | Sep 21, 2023 | ||
| S-8 | Registration of securities for employees | Jun 13, 2022 | ||
| S-8 | Registration of securities for employees | May 14, 2020 | ||
| S-8 | Registration of securities for employees | May 6, 2015 | ||
| 15-12B/A | Securities registration termination | Aug 14, 2014 | ||
| 15-12B | Securities registration termination | Feb 10, 2014 | ||
| S-8 | Registration of securities for employees | Aug 19, 2005 |
Proxies
| DEFA14A | Annual Meeting | Jan 23, 2026 | ||
| DEF 14A | Annual Meeting of Shareholders | View Diff | Jan 23, 2026 | |
| DEFA14A | Additional proxy soliciting materials | Feb 18, 2025 | ||
| DEFA14A | Additional proxy soliciting materials | Jan 23, 2025 | ||
| DEF 14A | Definitive proxy | View Diff | Jan 23, 2025 | |
| DEF 14A | Definitive proxy | View Diff | Jan 29, 2024 | |
| DEFA14A | Additional proxy soliciting materials | Jan 3, 2023 | ||
| DEF 14A | Definitive proxy | View Diff | Jan 3, 2023 | |
| DEFA14A | Additional proxy soliciting materials | Jan 11, 2022 | ||
| DEF 14A | Definitive proxy | View Diff | Jan 11, 2022 |
Other
| SD | Conflict minerals disclosure | Jun 26, 2026 | ||
| SD | Conflict minerals disclosure | Jun 27, 2025 | ||
| SD | Conflict minerals disclosure | Jul 19, 2024 | ||
| EFFECT | Notice of effectiveness | Oct 2, 2023 | ||
| UPLOAD | Letter from SEC | Sep 29, 2023 | ||
| CORRESP | Correspondence with SEC | Sep 29, 2023 | ||
| UPLOAD | Letter from SEC | Jan 3, 2023 | ||
| CORRESP | Correspondence with SEC | Dec 13, 2022 | ||
| CORRESP | Correspondence with SEC | Dec 2, 2022 | ||
| UPLOAD | Letter from SEC | Nov 17, 2022 |
Ownership
| 4 | Dealy Richard P | Oct 1, 2026 | ||
| 4 | Reece Joseph E | Oct 1, 2026 | ||
| 4 | Safran David | Oct 1, 2026 | ||
| 4 | Tills Amy | Sep 15, 2026 | ||
| SC 13G | American Century Investment Management Inc Acquires Stake in Compass Minerals International Inc | Aug 14, 2026 | ||
| 3 | Risner Brandon | Aug 13, 2026 | ||
| 4 | Ward Ashley | Jul 29, 2026 | ||
| 4 | Reece Joseph E | Jul 1, 2026 | ||
| 4 | Dealy Richard P | Jul 1, 2026 | ||
| 4 | Safran David | Jul 1, 2026 |