Compass Minerals International Inc

Compass Minerals International, Inc. (the “Company”) has determined that it is unable to file its quarterly report on Form 10-Q for the period ended June 30, 2024 (the “Form 10-Q”) by the prescribed due date without unreasonable effort or expense for the reasons below. As previously disclosed in the Company’s Current Report on Form 8-K filed July 3, 2024 (the "Form 8-K"), the Company identified misstatements in its (i) unaudited financial statements included in its Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2023, (ii) audited financial statements included in its Annual Report on Form 10-K for the period ended September 30, 2023 (the “2023 Form 10-K”), (iii) unaudited financial statements included in its Quarterly Report on Form 10-Q for the quarterly period ended December 31, 2023 and (iv) unaudited financial statements included in its Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2024 (the “Q2 2024 Form 10-Q”). These misstatements are related to (i) certain contingent consideration associated with the Company’s acquisition of Fortress North America, LLC, (ii) historical understatement of work-in-process inventory (not previously identified in the Form 8-K), (iii) immaterial misstatements to reclassify the impacts of non-cash capital expenditures in accounts payable in its operating and investing cash flows, (iv) an error in its interim non-GAAP Adjusted EBITDA calculation, which resulted in an understatement of its consolidated Adjusted EBITDA for the first and second quarters of 2024, and (v) certain other individual immaterial misstatements that are also immaterial in the aggregate. The Company expects to report in the Form 10-Q material weaknesses in its internal control over financial reporting. As a result, the disclosure controls and procedures will be ineffective as of June 30, 2024

Compass Minerals International, Inc. (the “Company”) has determined that it is unable to file its quarterly report on Form 10-Q for the period ended March 31, 2024, by the prescribed due date without unreasonable effort or expense primarily because the Company requires additional time to complete its materiality and internal control assessment with respect to a prior period error identified in the statement of cash flows included within the Company’s Annual Report on Form 10-K filed with the SEC on November 29, 2023, and interim periods within the periods included within the Form 10-K. As a result, the Company expects to file its Form 10-Q for the period ended March 31, 2024 as soon as practicable. Based on currently available information, the Company expects to disclose the correction of immaterial misstatements to reclassify the impacts of non-cash capital expenditures in accounts payable in its operating and investing cash flows for the annual and interim periods during fiscal 2023 and the interim period ended December 31, 2023. The Company does not anticipate any material changes to the selected financial information furnished with the Form 8-K filed by the Company on May 7, 2024

Compass Minerals International, Inc. (the “Company”) has determined that it is unable to file its Annual Report on Form 10-K for the fiscal year ended September 30, 2022 (the “2022 Form 10-K”) by the prescribed due date without unreasonable effort or expense primarily because the Company’s independent registered public accounting firm needs additional time to complete its audit procedures. On November 27, 2022, the Company was notified by Ernst & Young LLP (the “Firm”), the Company’s independent registered public accounting firm, that the Firm requires additional time to complete the audit of the Company’s financial statements for the fiscal year ended September 30, 2022 and its assessment of internal control over financial reporting as it engages in additional audit procedures to test salt inventory. As a result, the Company expects to file its 2022 Form 10-K within the 15 calendar day extension provided by Rule 12b-25, but can provide no assurance that it will be able to file by such time. Based on currently available information, the Company expects to report a material weakness in (i) the design and operations of our information technology general controls over user access related to an enterprise resource planning and other IT systems that support the processes related to the preparation of our consolidated financial statements, (ii) the design and operations of select controls related to the sales process, and (iii) controls over salt inventory at salt depots and warehouses. The Company does not expect any of the material weaknesses to result in material misstatements or omissions in its previously reported financial statements. The Company does not anticipate any material changes to the selected financial information furnished with the Form 8-K filed by the Company on November 29, 2022

Compass Minerals International, Inc. (the “Company”) has determined that it is unable to file its Transition Report on Form 10-KT for the transition period ended September 30, 2021 (the “2021 Form 10-KT”) by the prescribed due date without unreasonable effort or expense because the Company’s consolidated financial statements for the transition period ended September 30, 2021 have not been finalized. The delay in completing the financial statements is attributable to the finalization of the Company’s financial statements for its discontinued operations. The Company is filing its 2021 Form 10-KT before the 15 calendar day extension provided by Rule 12b-25

Compass Minerals International, Inc. (the “Company”) has determined that it is unable to file its Quarterly Report on Form 10-Q for the quarter ended June 30, 2021 (the “Q2 2021 Form 10-Q”) by the prescribed due date without unreasonable effort or expense. As previously disclosed, the Company has corrected its interim inventory valuation methodology and is restating other immaterial prior-period items. The Company is completing the documentation required for its quarterly and six-month financial statements and other disclosures required for the filing of the Q2 2021 Form 10-Q, and Ernst & Young, the Company’s independent registered public accounting firm responsible for auditing its financial statements, is completing its review of this documentation. While there can be no assurances, the Company is working to file its Q2 2021 Form 10-Q on or before the fifth calendar day extension provided by Rule 12b-25