Who
Christopher S. Cook
President, Products Division
Company insider
Files Form 4 as: President, Products Division, Ultra Clean Holdings.
In numbers
- Trades disclosed
- 29
- Buys
- 1
- Sells
- 4
- Bought
- $104K
- Sold
- $4.0M
- Companies
- 1
- Companies where not an officer
- 0
- First trade
- 28 Apr 2023
- Last trade
- 31 Aug 2026
- Last filed
- 2 Sep 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 31 Aug 2026filed 2 Sep 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Code F | $848K12,497 at $67.83 | filing |
| 31 Aug 2026filed 2 Sep 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Code F | $848K12,497 at $67.83 | filing |
| 22 May 2026filed 27 May 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Code A | —13,196 at $0.00 | filing |
| 22 May 2026filed 27 May 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Code A | —13,196 at $0.00 | filing |
| 4 May 2026filed 6 May 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Sold | $757K10,247 at $73.89 | filing |
| 4 May 2026filed 6 May 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Sold | $92K1,231 at $74.55 | filing |
| 4 May 2026filed 6 May 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Sold | $757K10,247 at $73.89 | filing |
| 4 May 2026filed 6 May 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Sold | $92K1,231 at $74.55 | filing |
| 30 Apr 2026filed 4 May 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Code F | $145K1,861 at $78.15 | filing |
| 30 Apr 2026filed 4 May 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Code F | $327K4,181 at $78.15 | filing |
| 30 Apr 2026filed 4 May 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Code F | $247K3,165 at $78.15 | filing |
| 30 Apr 2026filed 4 May 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Sold | $896K11,903 at $75.31 | filing |
| 30 Apr 2026filed 4 May 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Code F | $145K1,861 at $78.15 | filing |
| 30 Apr 2026filed 4 May 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Code F | $327K4,181 at $78.15 | filing |
| 30 Apr 2026filed 4 May 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Code F | $247K3,165 at $78.15 | filing |
| 30 Apr 2026filed 4 May 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Sold | $896K11,903 at $75.31 | filing |
| 29 Aug 2025filed 3 Sep 2025 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Code A | —73,686 at $0.00 | filing |
| 30 Apr 2025filed 2 May 2025 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Code F | $35K1,855 at $18.71 | filing |
| 30 Apr 2025filed 2 May 2025 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Code F | $42K2,225 at $18.71 | filing |
| 30 Apr 2025filed 2 May 2025 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Code F | $48K2,550 at $18.71 | filing |
News
Ultra Clean (NASDAQ:UCTT) Shares Gap Up – Here's WhyUCTT · themarketsdaily.com · 19 Oct 2026BSL at SEMICON West 2026: Ultra-Clean Processes with Global PartnersUCTT · manilatimes.net · 17 Oct 2026Cleanova expands semiconductor and ultra-clean controlled environment filtration capabilities with strategic acquisition of SV TechsolUCTT · cieonline.co.uk · 14 Oct 2026
0 headlines in the last 90 days name Christopher S. Cook; 3 articles from the last 14 days about the 1 company they traded most, at most three about any one of them.