CMP SEC Filings: 8-K, 10-Q, S-3 & 424B

Financials

TYPE

HEADLINE

FILED AT

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Aug 6, 2026

11-K

Form 11-K - Annual report of employee stock purchase, savings and similar plans

Jun 29, 2026

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

May 7, 2026

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Feb 5, 2026

10-K

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]

Dec 11, 2025

10-Q

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Aug 11, 2025

News

TYPE

HEADLINE

FILED AT

8-K

Compass Minerals International Appoints Brett Teuscher as Chief Accounting Officer

Oct 28, 2026

8-K

Compass Minerals International Reports Resignation of Director David Safran and Reduction of Board Size

Oct 15, 2026

8-K

Compass Minerals Announces Leadership Change in Operations

Aug 5, 2026

8-K

Compass Minerals Reports Fiscal 2026 Third-Quarter Results and Updates Full-Year Guidance

Aug 5, 2026

8-K

Compass Minerals Reports Fiscal 2026 Second-Quarter Results and Ratifies New Labor Agreement

May 6, 2026

8-K

Compass Minerals Announces Full Redemption of $150 Million in Senior Notes

Mar 24, 2026

Prospectus

TYPE

HEADLINE

FILED AT

424B3

UPDATED | SHARE RESALE REGISTRATION | Shares amount: 7,034,609

Sep 29, 2023

424B3

4,064,024 Shares

Nov 19, 2004

424B4

7,241,082 Shares

Jul 9, 2004

424B3

Number of Shares of Common Stock Beneficially Owned(1)

Feb 5, 2004

424B4

14,500,000 Shares

Dec 12, 2003

424B3

Registration

Nov 25, 2003

Registrations

TYPE

HEADLINE

FILED AT

S-8

Form S-8 - Securities to be offered to employees in employee benefit plans

Aug 27, 2026

S-8

Form S-8 - Securities to be offered to employees in employee benefit plans

Nov 13, 2024

S-3

SHELF

Sep 21, 2023

S-8

Registration

Jun 13, 2022

S-8

Registration

May 14, 2020

S-8

3,000,000

May 6, 2015

Proxies

TYPE

HEADLINE

FILED AT

DEFA14A

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material

Jan 23, 2026

DEF 14A

Form DEF 14A - Other definitive proxy statements

Jan 23, 2026

DEFA14A

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material

Feb 18, 2025

DEFA14A

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material

Jan 23, 2025

DEF 14A

Form DEF 14A - Other definitive proxy statements

Jan 23, 2025

DEF 14A

Form DEF 14A - Other definitive proxy statements

Jan 29, 2024

Ownerships

TYPE

HEADLINE

FILED AT

Ward Ashley (Reporting)

Oct 19, 2026

DOWLING EDWARD C (Reporting)

Oct 19, 2026

Risner Brandon (Reporting)

Oct 19, 2026

Nichols Benjamin S. (Reporting)

Oct 19, 2026

Safran David (Reporting)

Oct 15, 2026

DEALY RICHARD P (Reporting)

Oct 1, 2026

Other

TYPE

HEADLINE

FILED AT

Form SD - Specialized disclosure report

Jun 26, 2026

Form SD - Specialized disclosure report

Jun 27, 2025

Form SD - Specialized disclosure report

Jul 19, 2024

EFFECT

Form EFFECT - Notice of Effectiveness

Oct 2, 2023

CORRESP

Form CORRESP - Correspondence

Sep 29, 2023

LETTER

Form UPLOAD - SEC-generated letter

Sep 29, 2023

Compass Minerals International, Inc. CMP · SEC Filings