| 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 | 11 Dec 2025 | 0001434807 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ENTG | Common Stock | Sale | $186,423 | -2,008 | -8.9% | $92.84 | 20,434 | 10 Dec 2025 | Direct |