| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Weber Brian P | EVP (CHESI) | 27 INDEPENDENCE DRIVE, WALPOLE | /s/ Brian P. Weber | 16 Jun 2025 | 0001322710 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CLH | Common Stock | Sale | -$689K | -3.04K | -5.27% | $227.17 | 54.5K | 13 Jun 2025 | Direct |