| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Dugas Eric J. | EVP CHIEF FINANCIAL OFFICER | C/O CLEAN HARBORS, INC., 42 LONGWATER DRIVE, NORWELL | /s/ Eric J. Dugas | 20 Feb 2026 | 0001663307 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CLH | Common Stock | Sale | $784,292 | -2,788 | -15% | $281.31 | 15,933 | 20 Feb 2026 | Direct |