Company facts
- Headquarters
- Overland Park, Kansas
- Most recent report
- 8-K, filed Oct 15, 2026
- Incorporated
- Delaware
- Filings on record
- 1,000+ filings
- On EDGAR
- CIK 1227654
- Fiscal year ends
- September
- Filer status
- Accelerated filer
Financials 8 of 39
News 8 of 140
Prospectuses and Registrations 6
- S-8 Registration statement for an employee plan Aug 27, 2026
- S-8 Registration statement for an employee plan Nov 13, 2024
- 424B3 Prospectus supplement for an offering Sep 29, 2023
- S-3 Shelf registration statement Sep 21, 2023
- S-8 Registration statement for an employee plan Jun 14, 2022
- S-8 Registration statement for an employee plan May 14, 2020
Proxies 8 of 19
- DEFA14A Extra proxy material Jan 23, 2026
- DEF 14A Proxy statement for a shareholder vote Jan 23, 2026
- DEFA14A Extra proxy material Feb 18, 2025
- DEFA14A Extra proxy material Jan 23, 2025
- DEF 14A Proxy statement for a shareholder vote Jan 23, 2025
- DEF 14A Proxy statement for a shareholder vote Jan 29, 2024
- DEFA14A Extra proxy material Jan 3, 2023
- DEF 14A Proxy statement for a shareholder vote Jan 3, 2023
Ownership 8 of 742
- 4 Insider reported a trade Oct 15, 2026
- 4 Insider reported a trade Oct 1, 2026
- 4 Insider reported a trade Oct 1, 2026
- 4 Insider reported a trade Oct 1, 2026
- 4 Insider reported a trade Sep 15, 2026
- SCHEDULE 13G Large holder reported a passive stake Aug 14, 2026
- 3 Insider reported their initial holding Aug 13, 2026
- 4 Insider reported a trade Jul 29, 2026
Other 8 of 54
- 11-K Employee stock plan report Jun 29, 2026
- SD Conflict minerals disclosure Jun 26, 2026
- SD Conflict minerals disclosure Jun 27, 2025
- 11-K Employee stock plan report Jun 26, 2025
- NT 10-Q Notice that a quarterly report will be late Aug 9, 2024
- SD Conflict minerals disclosure Jul 19, 2024
- 11-K Employee stock plan report Jul 12, 2024
- NT 11-K Jun 28, 2024
Everything here comes from Compass Minerals International Inc's own filings on SEC EDGAR. The filing list is rechecked every hour.