Compass Minerals International Inc SEC filings CMP
Compass Minerals International Inc has 1,005 filings in SEC EDGAR's recent list, going back to Oct 2, 2017. Its latest annual report, Form 10-K, was filed on Dec 12, 2025 for the period ended Sep 30, 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 Oct 28, 2026 (officer or director change). The company's fiscal year ends on September 30.
| Form | Description | Filed | Period |
|---|---|---|---|
| 11-K | Employee savings plan report | Jun 29, 2026 | Dec 31, 2025 |
| SD | Specialized disclosure (conflict minerals) | Jun 26, 2026 | — |
| SD | Specialized disclosure (conflict minerals) | Jun 27, 2025 | — |
| 11-K | Employee savings plan report | Jun 26, 2025 | Dec 31, 2024 |
| NT 10-Q | Filing | Aug 9, 2024 | Jun 30, 2024 |
| SD | Specialized disclosure (conflict minerals) | Jul 19, 2024 | — |
| 11-K | Employee savings plan report | Jul 12, 2024 | Dec 31, 2023 |
| NT 11-K | Filing | Jun 28, 2024 | Dec 31, 2023 |
| NT 10-Q | Filing | May 10, 2024 | Mar 31, 2024 |
| EFFECT | Filing | Sep 29, 2023 | — |
| CORRESP | Letter to the SEC | Sep 29, 2023 | — |
| UPLOAD | Letter from the SEC | Sep 29, 2023 | — |
| 11-K | Employee savings plan report | Jun 29, 2023 | Dec 31, 2022 |
| UPLOAD | Letter from the SEC | Jan 3, 2023 | — |
| CORRESP | Letter to the SEC | Dec 13, 2022 | — |
| CORRESP | Letter to the SEC | Dec 2, 2022 | — |
| NT 10-K | Filing | Nov 29, 2022 | Sep 30, 2022 |
| UPLOAD | Letter from the SEC | Nov 17, 2022 | — |
| CORRESP | Letter to the SEC | Oct 20, 2022 | — |
| CORRESP | Letter to the SEC | Oct 13, 2022 | — |
| UPLOAD | Letter from the SEC | Sep 28, 2022 | — |
| CORRESP | Letter to the SEC | Sep 8, 2022 | — |
| CORRESP | Letter to the SEC | Sep 1, 2022 | — |
| CORRESP | Letter to the SEC | Aug 17, 2022 | — |
| UPLOAD | Letter from the SEC | Aug 4, 2022 | — |
| CORRESP | Letter to the SEC | Jul 15, 2022 | — |
| 11-K | Employee savings plan report | Jun 28, 2022 | Dec 31, 2021 |
| CORRESP | Letter to the SEC | Jun 27, 2022 | — |
| UPLOAD | Letter from the SEC | Jun 15, 2022 | — |
| NT 10-K | Filing | Nov 30, 2021 | Sep 30, 2021 |
| UPLOAD | Letter from the SEC | Nov 23, 2021 | — |
| CORRESP | Letter to the SEC | Nov 10, 2021 | — |
| UPLOAD | Letter from the SEC | Oct 27, 2021 | — |
| CORRESP | Letter to the SEC | Aug 23, 2021 | — |
| CORRESP | Letter to the SEC | Aug 10, 2021 | — |
| NT 10-Q | Filing | Aug 9, 2021 | Jun 30, 2021 |
| 11-K | Employee savings plan report | Jun 25, 2021 | Dec 31, 2020 |
| UPLOAD | Letter from the SEC | Jun 25, 2021 | — |
| CORRESP | Letter to the SEC | May 26, 2021 | — |
| CORRESP | Letter to the SEC | May 17, 2021 | — |
| CORRESP | Letter to the SEC | Apr 22, 2021 | — |
| UPLOAD | Letter from the SEC | Apr 21, 2021 | — |
| 11-K | Employee savings plan report | Jun 26, 2020 | Dec 31, 2019 |
| UPLOAD | Letter from the SEC | Jan 30, 2020 | — |
| CORRESP | Letter to the SEC | Jan 17, 2020 | — |
| CORRESP | Letter to the SEC | Dec 20, 2019 | — |
| UPLOAD | Letter from the SEC | Dec 19, 2019 | — |
| 11-K | Employee savings plan report | Jun 26, 2019 | Dec 31, 2018 |
| UPLOAD | Letter from the SEC | Nov 23, 2018 | — |
| CORRESP | Letter to the SEC | Nov 16, 2018 | — |
| CORRESP | Letter to the SEC | Oct 30, 2018 | — |
| UPLOAD | Letter from the SEC | Oct 23, 2018 | — |
| 11-K | Employee savings plan report | Jun 19, 2018 | Dec 31, 2017 |
Showing 53 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
- Mining & Quarrying of Nonmetallic Minerals (No Fuels) (SIC 1400)
- Listed as
- CMP (NYSE)
- Fiscal year ends
- September 30
- Incorporated in
- DE
- Headquarters
- Overland Park, KS
- SEC filer status
- Accelerated filer
- SEC CIK
- 1227654
- Former names
- SALT HOLDINGS CORP (until Nov 5, 2003)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.