| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Cook Christopher S | President, Products Division | ULTRA CLEAN HOLDINGS, INC., 26462 CORPORATE AVENUE, HAYWARD | /s/ Paul Y. Cho, as attorney-in-fact for Christopher S. Cook | 03 Sep 2025 | 0001927266 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | UCTI | Common Stock | Award | $0 | +73,686 | +131% | $0.000000 | 130,015 | 29 Aug 2025 | Direct | F1 |
| holding | UCTI | Common Stock | 4,100 | 29 Aug 2025 | by Trust |
| Id | Content |
|---|---|
| F1 | Restricted stock units vest over 3 years with equal parts vesting on each anniversary of the vesting commencement date of August 29, 2025. |