Power of Attorney for Deanne Larison

The filing is a Power of Attorney document for Deanne Larison, who is acting on behalf of Amy Tills, the Chief Human Resources Officer of Compass Minerals International Inc. The document was signed on October 9, 2025, and pertains to the period of report ending on September 11, 2025. The filing indicates that Amy Tills holds no securities in the company. This document is a standard legal form that authorizes Deanne Larison to act on behalf of Amy Tills in matters related to the company.