Over the 90-day window ending January 16, 2026, Ultra Clean Holdings's three dominant insider ownership positions are held by Ceo James P Scholhamer (418.45K shares), Chief Operating Officer Vijayan S. Chinnasami (184.34K shares), President And Products Division Christopher S Cook (130.01K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| James P Scholhamer | Ceo | 418,453 | 11 Jul, 2024 |
| Vijayan S. Chinnasami | Chief Operating Officer | 184,342 | 02 May, 2023 |
| Christopher S Cook | President And Products Division | 130,015 | 03 Sep, 2025 |
| Jinsong Xiao | Chief Executive Officer | 117,948 | 30 Sep, 2025 |
| Clarence L Granger | 117,817 | 04 Dec, 2025 | |
| Harjinder Bajwa | Chief Operating Officer | 76,693 | 02 Jul, 2025 |
| Bill Bentinck | President And Services Business | 71,503 | 02 May, 2025 |
| Sheri Savage | Cfo | 66,381 | 02 May, 2025 |
| Barbara Vaughn Scherer | 53,543 | 24 May, 2024 | |
| Brian E Harding | Chief Accounting Officer | 48,237 | 02 Jul, 2025 |
| Thomas T Edman | 46,041 | 27 May, 2025 | |
| Ernest E Maddock | 45,241 | 23 May, 2025 | |
| David T Ibnale | 45,241 | 05 Dec, 2025 | |
| Emily M Liggett | 43,775 | 23 May, 2025 | |
| Joan Sterling | Svp And Human Resources | 40,548 | 04 May, 2021 |
| Chris Siu | Chief Accounting Officer & Svp | 40,106 | 02 Jun, 2022 |
| William Joe Williams | President And Products Business | 34,061 | 03 May, 2022 |
| Jamie J. Palfrey | Svp And Global Human Resources | 30,465 | 08 May, 2025 |
| Jacqueline A. Seto | 28,950 | 23 May, 2025 | |
| Paul Yoonku Cho | General Counsel And Secretary | 23,345 | 10 Jun, 2025 |
| Jeffrey L. Mckibben | Chief Information Officer | 21,996 | 06 Jun, 2025 |
| Amir Widmann | President And Fluid Solutions | 14,462 | 18 May, 2021 |
| Joanne Solomon | 9,508 | 27 May, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 03 Dec, 2025 | David T Ibnale | Common Stock | D | 23,500 | $26.63 | 45,241 | D | S |
| 02 Dec, 2025 | Clarence L Granger | Common Stock | D | 1,000 | $0.00 | 117,817 | D | G |
| 25 Nov, 2025 | Clarence L Granger | Common Stock | D | 3,000 | $0.00 | 118,817 | D | G |
| 26 Sep, 2025 | Jinsong Xiao | - | - | 117,948 | D | |||
| 26 Sep, 2025 | Jinsong Xiao | Common Stock | A | 117,948 | $0.00 | 117,948 | D | A |
| 12 Sep, 2025 | Clarence L Granger | Common Stock | D | 9,938 | $25.23 | 121,817 | D | F |
| 29 Aug, 2025 | Christopher S Cook | - | - | 130,015 | D | |||
| 29 Aug, 2025 | Christopher S Cook | Common Stock | A | 73,686 | $0.00 | 130,015 | D | A |
| 30 Jun, 2025 | Brian E Harding | Common Stock | D | 4,198 | $22.57 | 48,237 | D | F |
| 30 Jun, 2025 | Harjinder Bajwa | Common Stock | D | 4,534 | $22.57 | 76,693 | D | F |
| 06 Jun, 2025 | Paul Yoonku Cho | Common Stock | D | 4,084 | $21.06 | 23,345 | D | S |
| 06 Jun, 2025 | Paul Yoonku Cho | - | - | 23,345 | D | |||
| 04 Jun, 2025 | Jeffrey L. Mckibben | Common Stock | D | 6,294 | $20.87 | 21,996 | D | S |
| 21 May, 2025 | Thomas T Edman | Common Stock | A | 8,198 | $0.00 | 46,041 | D | A |
| 21 May, 2025 | Ernest E Maddock | Common Stock | A | 8,198 | $0.00 | 45,241 | D | A |
| 21 May, 2025 | Emily M Liggett | - | - | 43,775 | D | |||
| 21 May, 2025 | Emily M Liggett | Common Stock | A | 8,198 | $0.00 | 43,775 | D | A |
| 21 May, 2025 | Clarence L Granger | Common Stock | A | 8,198 | $0.00 | 131,755 | D | A |
| 21 May, 2025 | David T Ibnale | Common Stock | A | 8,198 | $0.00 | 68,741 | D | A |
| 21 May, 2025 | Joanne Solomon | Common Stock | A | 8,198 | $0.00 | 9,508 | D | A |