| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Ward Ashley | Chief Accounting Officer | C/O COMPASS MINERALS, 9900 WEST 109TH STREET, SUITE 100, OVERLAND PARK | /s/ Jared Campbell, by power of attorney | 2025-11-26 | 0002029093 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| holding | CMP | Common Stock | 1.84K | Nov 24, 2025 | Direct |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CMP | Restricted Stock Unit | Award | $0 | +6.96K | $0.00 | 6.96K | Nov 24, 2025 | Common Stock | 6.96K | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | Each restricted stock unit represents a contingent right to receive one share of Issuer common stock. |
| F2 | Each stock unit vests in three equal installments, beginning on the first anniversary of the grant date and ending on November 24, 2028. |