Compass Minerals International Inc.

CMP·NYSE·$31.52Share Price as of 11/2·$1BMarket Cap as of 11/2

Financials

10-QQ3 ended 06/30/2608/06/26 10-QQ2 ended 03/31/2605/07/26 10-QQ1 ended 12/31/2502/06/26 10-KFY 202512/12/25 10-QQ3 ended 06/30/2508/11/25

Disclosures

8-KCurrent report10/28/26 8-KCurrent report10/15/26 8-KCurrent report08/05/26 8-KCurrent report08/05/26 8-KCurrent report05/06/26

Prospectuses and Registrations

S-8Registration of securities for employees08/27/26 S-8Registration of securities for employees11/13/24 424B3Prospectus09/29/23 S-3Shelf registration09/21/23 S-8Registration of securities for employees06/14/22

Proxies

DEF 14ADefinitive proxy01/23/26 DEFA14AAdditional proxy materials01/23/26 DEFA14AAdditional proxy materials02/18/25 DEF 14ADefinitive proxy01/23/25 DEFA14AAdditional proxy materials01/23/25

Ownership

Form 4Insider transaction10/19/26 Form 4Insider transaction10/19/26 Form 4Insider transaction10/19/26 Form 4Insider transaction10/19/26 Form 4Insider transaction10/15/26

Other

11-KEmployee stock purchase plan report06/29/26 SDConflict Minerals disclosure06/26/26 SDConflict Minerals disclosure06/27/25 11-KEmployee stock purchase plan report06/26/25 NT 10-QLate filing notification (10-Q)08/09/24