CMP

cmp-202602040001227654false00012276542026-02-042026-02-04

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): February 4, 2026

Compass Minerals International, Inc. (Exact name of registrant as specified in its charter)

Delaware 001-31921 36-3972986

(State or other jurisdiction of incorporation) (Commission File Number) (I.R.S. Employer Identification No.)

9900 West 109th Street Suite 100 Overland Park, KS 66210 (Address of principal executive offices)

(913) 344-9200 (Registrant's telephone number, including area code)

N/A (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading SymbolName of each exchange on which registered Common stock, $0.01 par valueCMPThe New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02     Results of Operations and Financial Condition.

On February 4, 2026, Compass Minerals International, Inc. issued a press release regarding its fiscal 2026 first quarter financial results. A copy of the press release is attached as Exhibit 99.1.

The information contained in Item 2.02 and Exhibit 99.1 of this Current Report on Form 8-K is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01    Financial Statements and Exhibits. (d)     Exhibits.

Exhibit No. Exhibit Description

99.1 Press Release issued by Compass Minerals International, Inc. on February 4, 2026.

104Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

COMPASS MINERALS INTERNATIONAL, INC.

Date: February 4, 2026 By: /s/ Peter Fjellman

Peter Fjellman Title: Chief Financial Officer

cmp-202512080001227654false00012276542025-12-082025-12-08

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): December 8, 2025

Compass Minerals International, Inc. (Exact name of registrant as specified in its charter)

Delaware 001-31921 36-3972986

(State or other jurisdiction of incorporation) (Commission File Number) (I.R.S. Employer Identification No.)

9900 West 109th Street Suite 100 Overland Park, KS 66210 (Address of principal executive offices)

(913) 344-9200 (Registrant's telephone number, including area code)

N/A (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading SymbolName of each exchange on which registered Common stock, $0.01 par valueCMPThe New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02     Results of Operations and Financial Condition.

On December 8, 2025, Compass Minerals International, Inc. (the "Company") issued a press release regarding its fourth quarter 2025 and fiscal year 2025 financial results. A copy of the press release is attached as Exhibit 99.1.

The information contained in Item 2.02 and Exhibit 99.1 of this Current Report on Form 8-K (this "Form 8-K") is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01    Financial Statements and Exhibits. (d)     Exhibits.

Exhibit No. Exhibit Description

99.1 Press Release issued by Compass Minerals International, Inc. on December 8, 2025.

104Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

COMPASS MINERALS INTERNATIONAL, INC.

Date: December 8, 2025 By: /s/ Peter Fjellman

Name: Peter Fjellman

Title: Chief Financial Officer

cmp-202508110001227654false00012276542025-08-112025-08-11

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): August 11, 2025

Compass Minerals International, Inc. (Exact name of registrant as specified in its charter)

Delaware 001-31921 36-3972986

(State or other jurisdiction of incorporation) (Commission File Number) (I.R.S. Employer Identification No.)

9900 West 109th Street Suite 100 Overland Park, KS 66210 (Address of principal executive offices)

(913) 344-9200 (Registrant's telephone number, including area code)

N/A (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading SymbolName of each exchange on which registered Common stock, $0.01 par valueCMPThe New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02     Results of Operations and Financial Condition.

On August 11, 2025, Compass Minerals International, Inc. issued a press release regarding its fiscal 2025 third quarter financial results. A copy of the press release is attached as Exhibit 99.1.

The information contained in Item 2.02 and Exhibit 99.1 of this Current Report on Form 8-K is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01    Financial Statements and Exhibits. (d)     Exhibits.

Exhibit No. Exhibit Description

99.1 Press Release issued by Compass Minerals International, Inc. on August 11, 2025.

104Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

COMPASS MINERALS INTERNATIONAL, INC.

Date: August 11, 2025 By: /s/ Peter Fjellman

Peter Fjellman Title: Chief Financial Officer