| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| MCKIM ALAN S | EXEC CHAIR, CTO., Director | C/O CLEAN HARBORS, INC., 42 LONGWATER DRIVE, NORWELL | /s/ C. Michael Malm, Attorney-in-Fact | 23 Feb 2026 | 0001024547 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CLH | Common Stock | Sale | $28,114,000 | -100,000 | -4.2% | $281.14 | 2,275,368 | 19 Feb 2026 | McKim 2007 Trust | |
| transaction | CLH | Common Stock | Gift | $0 | -10,000 | -0.44% | $0.000000 | 2,265,368 | 19 Feb 2026 | McKim 2007 Trust | F1 |
| holding | CLH | Common Stock | 34,027 | 19 Feb 2026 | Direct | ||||||
| holding | CLH | Common Stock | 67,093 | 19 Feb 2026 | McKim 2025 Annuity Trust |
| Id | Content |
|---|---|
| F1 | Charitable Gift. |