Compass Minerals(CMP) - 2020 Q4 - Annual Report

United States Securities and Exchange Commission Washington, D.C. 20549 FORM 10-K (MARK ONE) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from _______ to _______ Commission File Number 001-31921 Compass Minerals International, Inc. (Exact name of registrant as specified in its charter) Delaware 36-3972986 ...