| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Quirk Alison A. | Director | C/O CLEAN HARBORS, INC., 42 LONGWATER DRIVE, NORWELL | /s/ Alison A. Quirk | 23 May 2025 | 0001485499 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CLH | Common Stock | Award | $0 | +789 | +26% | $0 | 3,871 | 21 May 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Award of restricted stock to non-employee director vesting 100% upon the date of the next annual meeting of shareholders. |