| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| LEDERER JAMES P | Director | C/O ENTEGRIS, INC., 129 CONCORD ROAD, BILLERICA | /s/ Joseph Collela, Attorney-In-Fact for James P. Lederer | 2025-12-11 | 0001434807 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ENTG | Common Stock | Sale | -$186K | -2.01K | -8.95% | $92.84 | 20.4K | Dec 10, 2025 | Direct |