| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Xiao Jinsong | Chief Executive Officer | ULTRA CLEAN HOLDINGS, INC., 26462 CORPORATE AVE., HAYWARD | /s/ Paul Y. Cho, as attorney-in-fact for Jinsong Xiao | 30 Sep 2025 | 0002086234 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | UCTT | Common Stock | Award | $0 | +117,948 | $0.000000 | 117,948 | 26 Sep 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Restricted stock units vest over 3 years with equal parts vesting on each anniversary of the vesting commencement date of September 26, 2025. |