Cook Christopher S
SEC insider (Form 3/4/5 filer). CIK 0001927266. President, Products Division at Ultra Clean Holdings, Inc. (UCTT). 14 reported Form 4/5 transactions since Sep 2024; latest on Aug 31, 2026. Located in HAYWARD, CA.
Companies Cook Christopher S has filed insider reports for
- Ultra Clean Holdings, Inc. (UCTT): Officer, President, Products Division
Cook Christopher S
CIK: 0001927266
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
Ultra Clean Holdings, Inc.
Discretionary Trading P&L
Holdings
Transaction History (14 total)
- Aug 31, 2026UCTT
Ultra Clean Holdings, Inc.
Tax PaymentDirect12.5K shares at avg. $67.83$848K - May 22, 2026UCTT
Ultra Clean Holdings, Inc.
AwardDirect13.2K shares- - May 4, 2026UCTT
Ultra Clean Holdings, Inc.
SaleDirect10.2K shares at avg. $73.89$757K - May 4, 2026UCTT
Ultra Clean Holdings, Inc.
SaleDirect1.2K shares at avg. $74.55$92K - Apr 30, 2026UCTT
Ultra Clean Holdings, Inc.
Tax PaymentDirect4.2K shares at avg. $78.15$327K - Apr 30, 2026UCTT
Ultra Clean Holdings, Inc.
Tax PaymentDirect1.9K shares at avg. $78.15$145K - Apr 30, 2026UCTT
Ultra Clean Holdings, Inc.
Tax PaymentDirect3.2K shares at avg. $78.15$247K - Apr 30, 2026UCTT
Ultra Clean Holdings, Inc.
SaleDirect11.9K shares at avg. $75.31$896K - Aug 29, 2025UCTI
Ultra Clean Holdings, Inc.
AwardDirect73.7K shares- - Apr 30, 2025UCTT
Ultra Clean Holdings, Inc.
Tax PaymentDirect2.6K shares at avg. $18.71$48K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Aug 31, 2026 | UCTT Ultra Clean Holdings, Inc. | Tax Payment | 12,497 | $67.83 | $847,672 | Direct |
| May 22, 2026 | UCTT Ultra Clean Holdings, Inc. | Award | 13,196 | - | $0 | Direct |
| May 4, 2026 | UCTT Ultra Clean Holdings, Inc. | Sale | 10,247 | $73.89 | $757,151 | Direct |
| May 4, 2026 | UCTT Ultra Clean Holdings, Inc. | Sale | 1,231 | $74.55 | $91,771 | Direct |
| Apr 30, 2026 | UCTT Ultra Clean Holdings, Inc. | Tax Payment | 4,181 | $78.15 | $326,745 | Direct |
| Apr 30, 2026 | UCTT Ultra Clean Holdings, Inc. | Tax Payment | 1,861 | $78.15 | $145,437 | Direct |
| Apr 30, 2026 | UCTT Ultra Clean Holdings, Inc. | Tax Payment | 3,165 | $78.15 | $247,345 | Direct |
| Apr 30, 2026 | UCTT Ultra Clean Holdings, Inc. | Sale | 11,903 | $75.31 | $896,415 | Direct |
| Aug 29, 2025 |  UCTI Ultra Clean Holdings, Inc. | Award | 73,686 | - | - | Direct |
| Apr 30, 2025 | UCTT Ultra Clean Holdings, Inc. | Tax Payment | 2,550 | $18.71 | $47,711 | Direct |
1-10 of 14 transactions