Ultra Clean Holdings, Inc.
A supplier of critical parts and services for the semiconductor industry, Ultra Clean Holdings designs gas and fluid delivery systems, precision robotics, and process modules used in chip-making equipment, and runs ultra-high purity parts cleaning and coating services for chipmakers' tools. Its customers include equipment makers like Applied Materials and Lam Research as well as semiconductor device manufacturers, with operations reaching Asia Pacific and EMEA.
Granted 144.7K · Bought 676 · Sold 26.6K
Granted 44.6K · Sold 7.3K
Granted 149.1K
Granted 148.9K · Bought 4.1K · Sold 36.6K
Granted 51.2K · Bought 1.0K · Sold 38.0K
Granted 52.8K · Bought 27.5K
Granted 42.8K · Bought 3.0K · Sold 9.8K
Granted 23.4K · Bought 10.0K
Granted 12.6K
Granted 118.7K · Sold 98.3K
Granted 23.4K
Granted 23.4K · Sold 63.5K
Granted 6.7K
Granted 8.0K
Granted 23.4K · Sold 23.8K
Granted 87.3K · Bought 4.0K · Sold 32.0K
Granted 23.4K · Sold 1.5K
Granted 68.0K · Sold 36.2K
Granted 47.8K · Sold 31.1K
Granted 48.3K · Sold 30.3K
Granted 5.6K
Granted 12.1K
Granted 10.7K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Scholhamer James PCEO, Director · 21 transactions | -15.2% | 418.5Kas of Jul 2024 | 144.7K | 676 | 26.6K |
| Chinnasami Vijayan S.Chief Operating Officer · 5 transactions | +25.3% | 184.3Kas of Apr 2023 | 44.6K | — | 7.3K |
| Xiao JinsongChief Executive Officer · 2 transactions | — | 149.1K | 149.1K | — | — |
| Cook Christopher SPresident, Products Division · 20 transactions | — | 114.7K | 148.9K | 4.1K | 36.6K |
| Granger Clarence LDirector · 17 transactions | — | 85.4K | 51.2K | 1.0K | 38.0K |
| Bajwa HarjinderChief Operating Officer · 8 transactions | — | 76.7Kas of Jun 2025 | 52.8K | 27.5K | — |
| Bentinck BillPresident, Services Business · 24 transactions | +20% | 73.9Kas of Apr 2025 | 42.8K | 3.0K | 9.8K |
| Maddock Ernest EDirector · 6 transactions | — | 58.8K | 23.4K | 10.0K | — |
| Scherer Barbara VaughnDirector · 3 transactions | +30.9% | 53.5Kas of May 2024 | 12.6K | — | — |
| Savage SheriCFO · 91 transactions | -56.9% | 51.5K | 118.7K | — | 98.3K |
| Edman Thomas TDirector · 5 transactions | +92.9% | 48.6K | 23.4K | — | — |
| Ibnale David TDirector · 9 transactions | -45.6% | 47.8K | 23.4K | — | 63.5K |
| Siu ChrisChief Accounting Officer & SVP · 7 transactions | -4.2% | 40.1Kas of May 2022 | 6.7K | — | — |
| Williams William JoePresident, Products Business · 8 transactions | -6% | 40.0Kas of Apr 2022 | 8.0K | — | — |
| Liggett Emily MDirector · 9 transactions | -0.9% | 38.2K | 23.4K | — | 23.8K |
| Harding Brian EChief Accounting Officer · 43 transactions | — | 37.4K | 87.3K | 4.0K | 32.0K |
| Seto Jacqueline A.Director · 6 transactions | +229.5% | 31.5K | 23.4K | — | 1.5K |
| Palfrey Jamie J.SVP, Global Human Resources · 33 transactions | — | 26.3K | 68.0K | — | 36.2K |
| Cho Paul YoonkuGeneral Counsel and Secretary · 40 transactions | -31.5% | 22.9K | 47.8K | — | 31.1K |
| McKibben Jeffrey L.Chief Information Officer · 28 transactions | +8.1% | 17.2K | 48.3K | — | 30.3K |
| Johnson Samuel WilliamsSVP, Services Business · 2 transactions | — | 16.4K | 5.6K | — | — |
| Solomon JoanneDirector · 3 transactions | — | 12.1K | 12.1K | — | — |
| Wunar Robert AnthonyChief Operating Officer · 1 transaction | — | 10.7K | 10.7K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 5 years: -384.6K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.