| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Nichols Benjamin S. | Chief Commercial Officer | C/O COMPASS MINERALS INTERNATIONAL, INC., 9900 WEST 109TH STREET, SUITE 100, OVERLAND PARK | /s/ Jared Campbell, Attorney-in-Fact | 17 Jun 2025 | 0002015089 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| holding | CMP | Common Stock | 7,981 | 13 May 2025 | Direct | ||||||
| holding | CMP | Common Stock | 249 | 13 May 2025 | 401(k) Plan | F1 |
| 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 | +2,210 | $0.000000 | 2,210 | 13 May 2025 | Common Stock | 2,210 | Direct | F2, F3 |
| Id | Content |
|---|---|
| F1 | The reported number is based on a 401(k) plan statement dated as of June 16, 2025. |
| F2 | Each Restricted stock unit represents a contingent right to receive one share of Issuer common stock. |
| F3 | The restricted stock units vest in three equal installments, beginning on the first anniversary of the grant date and ending on May 13, 2028. |