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 |
|---|---|---|---|
| DEFA14A | Additional proxy material | Jan 23, 2026 | — |
| DEF 14A | Proxy statement | Jan 23, 2026 | Mar 5, 2026 |
| DEFA14A | Additional proxy material | Feb 18, 2025 | — |
| DEFA14A | Additional proxy material | Jan 23, 2025 | — |
| DEF 14A | Proxy statement | Jan 23, 2025 | Mar 6, 2025 |
| DEF 14A | Proxy statement | Jan 29, 2024 | Mar 5, 2024 |
| DEFA14A | Additional proxy material | Jan 3, 2023 | — |
| DEF 14A | Proxy statement | Jan 3, 2023 | Feb 15, 2023 |
| DEFA14A | Additional proxy material | Jan 11, 2022 | — |
| DEF 14A | Proxy statement | Jan 11, 2022 | Feb 24, 2022 |
| DEFA14A | Additional proxy material | Apr 2, 2021 | — |
| DEF 14A | Proxy statement | Apr 2, 2021 | May 18, 2021 |
| DEFA14A | Additional proxy material | Mar 31, 2020 | — |
| DEF 14A | Proxy statement | Mar 31, 2020 | May 14, 2020 |
| PRE 14A | Preliminary proxy statement | Mar 20, 2020 | May 14, 2020 |
| DEFA14A | Additional proxy material | Mar 26, 2019 | — |
| DEF 14A | Proxy statement | Mar 26, 2019 | May 9, 2019 |
| DEFA14A | Additional proxy material | Mar 27, 2018 | — |
| DEF 14A | Proxy statement | Mar 27, 2018 | May 9, 2018 |
Showing 19 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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All 37 Mining & Quarrying of Nonmetallic Minerals (No Fuels) companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.