COMPASS MINERALS INTERNATIONAL INC

ITEM 4. MINE SAFETY DISCLOSURES

Information concerning mine safety violations or other regulatory matters required by Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act and Item 104 of Regulation S-K is incorporated by reference to Exhibit 95 to this Form 10-K report.

Information about our Executive Officers

Below is information about each person who was or is an executive officer as of September 30, 2025, and as of the date of the filing of this Form 10-K. The table sets forth each person’s name, position and age as of the date of the filing of this Form 10-K.

Edward C. Dowling Jr., President and Chief Executive Officer and Director, joined Compass Minerals as president and chief executive officer (CEO) in January 2024. He continues to serve on the company’s board of directors, as he has since March 2022. Mr. Dowling has more than 35 years of leadership experience and international mining expertise. Prior to joining Compass Minerals, Mr. Dowling served as the president, CEO and member of the board of directors of SSR Mining Inc. (f/k/a Alacer Gold Corp.), a publicly traded hard rock mining company (2008-2012), and was chair of the board (2013-2020). Previously, he was president and CEO of Meridian Gold Inc. (2006-2007), executive director for mining and exploration at De Beers S.A. (2004-2006) and executive vice president for operations at Cleveland-Cliffs Inc. (1998-2004). Additionally, he formerly served as chair of the board of PJSC Polyus and of Copper Mountain Mining Corporation. Mr. Dowling currently serves on the board of directors of Wesdome Gold Mines as of May 2025 and has served on the board of directors of Teck Resources Ltd. from 2012 to 2025.

Peter Fjellman, Chief Financial Officer, joined Compass Minerals in January 2025 as chief financial officer. Mr. Fjellman brings over 30 years of experience leading finance teams across diverse industrial, manufacturing and logistics sectors, most recently serving as senior vice president of finance, Americas and Asia Pacific for GXO Logistics, a spinoff of XPO Logistics. Prior to GXO Logistics, his roles included CFO, Americas for ABB, a global power and automation products manufacturer; vice president of finance, North America, at Danaher Corporation, a global life sciences and diagnostics company; and positions of increasing responsibility at Newell Rubbermaid Corporation, a global consumer goods manufacturer. Mr. Fjellman began his career on the audit team at KPMG.

Patrick Merrin, Chief Operations Officer, joined Compass Minerals in March 2025 as chief operations officer (“COO”). Prior to joining the company, Mr. Merrin served as executive vice president of technical services at Lundin Mining Corporation, a diversified Canadian base metals miner. Before Lundin, he was appointed chief executive officer at Copper Mountain Mining Corporation, a copper mining company. Previous roles include COO of mining at Washington Companies, a diversified holding company in the transportation, mining, construction and shipbuilding industries; and senior vice president of Canadian operations at Newcrest Mining and Goldcorp, both gold mining companies acquired by Newmont Corporation.

Ben Nichols, Chief Commercial Officer, joined Compass Minerals in November 2004 as sales and marketing analyst and held positions of increasing responsibility until his promotion in March 2018, to vice president, salt, consumer and industrial. In January 2020, he was named vice president, plant nutrition. Mr. Nichols was appointed chief sales officer in January 2024 to oversee the sales, product management and marketing functions for the Salt and Plant Nutrition businesses. In March 2025, he was named chief commercial officer.

Amy Tills, Chief Human Resources Officer, joined Compass Minerals as chief human resources officer in September 2025. Before joining Compass Minerals, Ms. Tills developed a background in transforming organization cultures and she brings more than 20 years of experience in human resources leadership and labor relations from various industries and global operations. Most recently, she served as global vice president of human resources at Fluke Corporation. Previously, she was vice president of human resources, global cooling, at SPX Corporation. Additionally, she gained experience at manufacturing companies, including Honeywell, Amcor Ltd., and Goodyear Tire and Rubber Company.

Ashley Ward, Chief Accounting Officer, joined Compass Minerals in July 2024 as vice president, corporate controller and was appointed chief accounting officer in June 2025. Prior to joining the company, Ms. Ward spent 10 years with Crestwood Equity partners and held positions of increasing responsibility, including assistant controller and director, operational accounting and fixed assets. After receiving a Bachelor of Business Administration in accounting from Wichita State University, she began her career in accounting at Flint Hills Resources, a wholly owned subsidiary of Koch Industries.

PART II

ITEM 5. MARKET FOR THE REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

CUMULATIVE TOTAL STOCK RETURN

The following Stockholder Performance Graph compares the cumulative total return on the Company’s common stock with the Russell 2000 Index and a peer group index with companies with market capitalization from $1 billion to $3 billion. The performance graph below uses a market capitalization index because the Company does not believe it has a reasonable line-of-business peer group. The graph assumes that the value of the investment in common stock and each index was $100 on December 31, 2020 and that all dividends were reinvested. Peer group indices use beginning of period market capitalization weighting.

The share price performance shown on the graph is not necessarily indicative of future price performance. Information used in the graph was prepared by Zacks Investment Research, Inc. Used with permission. All rights reserved. Copyright 1980–2024. Index Data: Copyright Russell Investments. Used with permission. All rights reserved. The performance graph above is furnished and not filed for purposes of the Securities Act and the Exchange Act. The performance graph is not soliciting material subject to Regulation 14A.

COMMON STOCK DATA

Our common stock, $0.01 par value, trades on the New York Stock Exchange under the symbol CMP.

HOLDERS

On December 8, 2025, the number of holders of record of our common stock was 228.

DIVIDEND POLICY

We paid dividends for the first and second quarters of fiscal 2024. On April 22, 2024, the Board of Directors determined not to declare dividends for the foreseeable future in order to align our capital allocation priorities with our corporate focus on accelerating cash flow generation and debt reduction. The payment of any future dividends will be at the discretion of the Board of Directors and will depend on our financial condition, results of operations, capital requirements, and any other factors deemed relevant by the Board of Directors.