COMPASS MINERALS INTERNATIONAL INC

NYSE:CMP

Mining & Quarrying of Nonmetallic Minerals (No Fuels)·OVERLAND PARK, KS

Compass Minerals International, Inc is an American public company that, through its subsidiaries, is a leading producer of minerals, including salt, magnesium chloride and sulfate of potash. Based in Overland Park, Kansas; the company provides bulk treated and untreated highway deicing salt to customers in North America and the United Kingdom and plant nutrition products to growers worldwide.

Financials

20 shown

Type	Period	Ended	Filed
10-Q	Q4 2025	12/31/25	2/6/26	→
10-K	FY 2025	9/30/25	12/12/25	→
10-Q	Q2 2025	6/30/25	8/11/25	→
10-Q	Q1 2025	3/31/25	5/8/25	→
10-Q	Q4 2024	12/31/24	2/10/25	→
10-K	FY 2024	9/30/24	12/16/24	→
↓

Earnings Releases (8-K)

20 shown

Filed	Period
2/4/26	Q2 FY2026	→
12/8/25	Q1 FY2026	→
8/11/25	Q4 FY2025	→
5/7/25	Q3 FY2025	→
2/10/25	Q2 FY2025	→
12/16/24	Q1 FY2025	→
↓

News (8-K)

60 shown

Filed	Type	Description
3/10/26	Vote	Submission of Matters to a Vote of Security Holders	→
12/23/25	Other	Other Events	→
12/19/25	Exec Change	Departure or Appointment of Directors or Certain Officers	→
8/28/25	Other	Other Events	→
6/27/25	Exec Change	Departure or Appointment of Directors or Certain Officers	→
6/16/25	Agreement	Entry into a Material Definitive Agreement	→
↓

Prospectuses & Registrations

5 shown

Filed	Form	Description
11/13/24	S-8	S-8	→
9/29/23	424B3	424B3	→
9/21/23	S-3	S-3	→
6/14/22	S-8	S-8	→
5/14/20	S-8	S-8	→

Proxies

19 shown

Filed	Form	Description
1/23/26	DEFA14A	DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS	→
1/23/26	DEF 14A	DEFINITIVE PROXY STATEMENT	→
2/18/25	DEFA14A	DEFA14A	→
1/23/25	DEFA14A	DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS	→
1/23/25	DEF 14A	DEFINITIVE PROXY STATEMENT	→
1/29/24	DEF 14A	COMPASS MINERALS INTERNATIONAL INC - DEF 14A	→
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Filing History(1005 filings)

TypeDateAccessionPeriodSize

8-K

Mar 10, 2026

0001227654-26-0000158-K

Mar 5, 2026

398.2 KB

Mar 9, 2026

0001121919-26-000004FORM 4

Mar 5, 2026

8.8 KB

Mar 9, 2026

0001242956-26-000002FORM 4

Mar 5, 2026

7.0 KB

Mar 9, 2026

0001659413-26-000006FORM 4

Mar 5, 2026

9.7 KB

Mar 9, 2026

0001299936-26-000005FORM 4

Mar 5, 2026

6.2 KB

Mar 9, 2026

0002108024-26-000006FORM 4

Mar 5, 2026

6.2 KB

Mar 9, 2026

0002108014-26-000004FORM 4

Mar 5, 2026

6.2 KB

Mar 9, 2026

0001601170-26-000008FORM 4

Mar 5, 2026

6.2 KB

Mar 9, 2026

0001865695-26-000004FORM 4

Mar 5, 2026

8.9 KB

Mar 9, 2026

0001806395-26-000004FORM 4

Mar 5, 2026

8.8 KB

Mar 4, 2026

0001227654-26-000013FORM 4

Mar 3, 2026

10.6 KB

SCHEDULE 13G

Feb 9, 2026

0000093751-26-000038

—

8.0 KB

10-Q

Feb 6, 2026

0001227654-26-00001210-Q

Dec 31, 2025

7.0 MB

8-K

Feb 4, 2026

0001227654-26-0000088-K

Feb 4, 2026

939.9 KB

Jan 29, 2026

0002108024-26-000004FORM 4

Dec 18, 2025

7.0 KB

Jan 29, 2026

0002108024-26-000002FORM 3

Dec 18, 2025

313.3 KB

Jan 29, 2026

0002108014-26-000002FORM 4

Dec 18, 2025

7.0 KB

Jan 29, 2026

0001227654-26-000005FORM 3

Dec 18, 2025

256.3 KB

Jan 29, 2026

0002054940-26-000002FORM 4

Jan 28, 2026

8.5 KB

Jan 26, 2026

0001601170-26-000004FORM 4

Dec 18, 2025

7.0 KB

Jan 26, 2026

0001601170-26-000002FORM 3

Dec 18, 2025

331.2 KB

DEFA14A

Jan 23, 2026

0001308179-26-000020DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS

—

166.7 KB

DEF 14A

Jan 23, 2026

0001308179-26-000019DEFINITIVE PROXY STATEMENT

Mar 5, 2026

33.6 MB

Jan 20, 2026

0001210454-26-000002FORM 4

Jan 18, 2026

9.2 KB

Jan 5, 2026

0001299936-26-000003FORM 4

Dec 18, 2025

7.0 KB

25 filings shown

COMPASS MINERALS INTERNATIONAL INC

Financials

Earnings Releases (8-K)

News (8-K)

Prospectuses & Registrations

Proxies

Filing History(1005 filings)

Ownership

Other Filings

Filed	Form	Description
3/9/26	4	4	→
3/9/26	4	4	→
3/9/26	4	4	→
3/9/26	4	4	→
3/9/26	4	4	→
3/9/26	4	4	→
↓

Filed	Form	Description
2/9/26	SCHEDULE 13G	SCHEDULE 13G	→
11/18/25	SCHEDULE 13G	SCHEDULE 13G	→
11/10/25	SCHEDULE 13G	SCHEDULE 13G	→
10/30/25	SCHEDULE 13G/A	SCHEDULE 13G/A	→
8/27/25	144	144	→
8/19/25	144	144	→
↓