UCTT (Ultra Clean Holdings, Inc.)
Insider Trading Activity
Every open-market purchase and sale reported by UCTT officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-04 | Michael Dennis Keogh | Chief Financial Officer | A | — | — |
| 2026-09-02 | Christopher S Cook | President, Products Division | F | — | — |
| 2026-07-07 | BRIAN E HARDING | Chief Accounting Officer | Sell | — | — |
| 2026-06-09 | Sheri Savage | CFO | Sell | — | — |
| 2026-06-09 | Sheri Savage | CFO | Sell | — | — |
| 2026-06-08 | BRIAN E HARDING | Chief Accounting Officer | Sell | — | — |
| 2026-06-04 | Paul Yoonku Cho | General Counsel and Secretary | Sell | — | — |
| 2026-05-27 | Jinsong Xiao | Chief Executive Officer | A | — | — |
| 2026-05-27 | Jacqueline A. Seto | Director | A | — | — |
| 2026-05-27 | Samuel Williams Johnson | SVP, Services Business | A | — | — |
| 2026-05-27 | Sheri Savage | CFO | A | — | — |
| 2026-05-27 | Robert Anthony Wunar | Chief Operating Officer | A | — | — |
| 2026-05-27 | THOMAS T EDMAN | Director | A | — | — |
| 2026-05-27 | Paul Yoonku Cho | General Counsel and Secretary | A | — | — |
| 2026-05-27 | ERNEST E MADDOCK | Director | A | — | — |
| 2026-05-27 | Jeffrey L. McKibben | Chief Information Officer | A | — | — |
| 2026-05-27 | CLARENCE L GRANGER | Director | A | — | — |
| 2026-05-27 | Christopher S Cook | President, Products Division | A | — | — |
| 2026-05-27 | Joanne Solomon | Director | A | — | — |
| 2026-05-27 | BRIAN E HARDING | Chief Accounting Officer | A | — | — |
| 2026-05-27 | EMILY M LIGGETT | Director | MIXED | — | — |
| 2026-05-27 | Jamie J. Palfrey | SVP, Global Human Resources | A | — | — |
| 2026-05-27 | DAVID T IBNALE | Director | A | — | — |
| 2026-05-18 | Jeffrey L. McKibben | Chief Information Officer | Sell | — | — |
| 2026-05-12 | Paul Yoonku Cho | General Counsel and Secretary | Sell | — | — |
| 2026-05-12 | Jeffrey L. McKibben | Chief Information Officer | Sell | — | — |
| 2026-05-07 | Jamie J. Palfrey | SVP, Global Human Resources | Sell | — | — |
| 2026-05-07 | BRIAN E HARDING | Chief Accounting Officer | Sell | — | — |
| 2026-05-06 | Christopher S Cook | President, Products Division | Sell | — | — |
| 2026-05-05 | CLARENCE L GRANGER | Director | Sell | — | — |
| 2026-05-04 | Sheri Savage | CFO | F | — | — |
| 2026-05-04 | Jeffrey L. McKibben | Chief Information Officer | F | — | — |
| 2026-05-04 | Paul Yoonku Cho | General Counsel and Secretary | F | — | — |
| 2026-05-04 | BRIAN E HARDING | Chief Accounting Officer | F | — | — |
| 2026-05-04 | Jamie J. Palfrey | SVP, Global Human Resources | F | — | — |
| 2026-05-04 | Christopher S Cook | President, Products Division | MIXED | — | — |
| 2026-04-02 | Samuel Williams Johnson | SVP, Services Business | F | — | — |
| 2026-03-03 | CLARENCE L GRANGER | Director | G | — | — |
| 2025-12-05 | DAVID T IBNALE | Director | Sell | — | — |
| 2025-12-04 | CLARENCE L GRANGER | Director | G | — | — |
| 2025-11-28 | CLARENCE L GRANGER | Director | G | — | — |
| 2025-09-30 | Jinsong Xiao | Chief Executive Officer | A | — | — |
| 2025-09-16 | CLARENCE L GRANGER | Director | F | — | — |
| 2025-09-03 | Christopher S Cook | President, Products Division | A | — | — |
| 2025-07-02 | Harjinder Bajwa | Chief Operating Officer | F | — | — |
| 2025-07-02 | BRIAN E HARDING | Chief Accounting Officer | F | — | — |
| 2025-06-10 | Paul Yoonku Cho | General Counsel and Secretary | Sell | — | — |
| 2025-06-06 | Jeffrey L. McKibben | Chief Information Officer | Sell | — | — |
| 2025-05-27 | Joanne Solomon | Director | A | — | — |
| 2025-05-27 | THOMAS T EDMAN | Director | A | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 3,080,039 | — |
| — | 10%+ Owner | 2,838,044 | — |
| — | 10%+ Owner | 2,640,275 | — |
| — | 10%+ Owner | 1,883,390 | — |
| — | 10%+ Owner | 497,779 | — |
| — | CEO | 418,453 | — |
| — | President & COO | 396,816 | — |
| — | President, CFO | 390,022 | — |
| — | Chief Operating Officer | 184,342 | — |
| — | Chief Executive Officer | 149,123 | — |
| — | President, Asia | 122,715 | — |
| — | 10%+ Owner | 107,925 | — |
| — | SVP, North America | 106,055 | — |
| — | President, Products Division | 102,226 | — |
| — | Director | 85,392 | — |
| — | President & COO | 85,001 | — |
| — | 10%+ Owner | 84,346 | — |
| — | Chief Operating Officer | 76,693 | — |
| — | President, Services Business | 73,924 | — |
| — | Director | 63,358 | — |
| — | CFO | 61,508 | — |
| — | Director | 61,000 | — |
| — | Director | 58,816 | — |
| — | SVP, Global Account Mgmt | 55,247 | — |
| — | Please see Remarks | 54,481 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the UCTT quote page; the site-wide leaderboard is on the insider transactions hub.