Updated Jul 16, 2026
Cho Paul Yoonku has filed 4 SEC Form 4 filings across 1 company in the last 90 days — selling. Lifetime open-market sales: $344K.
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-04 | UCTT | Ultra Clean Holdings, Inc. | S — Open-market sale | 944 | $89.37 | $84K |
| 2026-05-28 | UCTT | Ultra Clean Holdings, Inc. | A — Grant or award | 8.0K | $0.00 | |
| 2026-05-12 | UCTT | Ultra Clean Holdings, Inc. | S — Open-market sale | 2.0K | $86.89 | $174K |
| 2026-05-05 | UCTT | Ultra Clean Holdings, Inc. | F — Tax withholding / forfeiture | 2.5K | $78.15 | $192K |
| 2026-05-05 | UCTT | Ultra Clean Holdings, Inc. | F — Tax withholding / forfeiture | 1.5K | $78.15 | $114K |
| 2026-05-05 | UCTT | Ultra Clean Holdings, Inc. | F — Tax withholding / forfeiture | 1.6K | $78.15 | $124K |
| 2025-06-06 | UCTT | Ultra Clean Holdings, Inc. | S — Open-market sale | 4.1K | $21.06 | $86K |
| 2025-04-30 | UCTT | Ultra Clean Holdings, Inc. | F — Tax withholding / forfeiture | 995 | $18.71 | $19K |
| 2025-04-30 | UCTT | Ultra Clean Holdings, Inc. | F — Tax withholding / forfeiture | 1.5K | $18.71 | $27K |
| 2025-04-30 | UCTT | Ultra Clean Holdings, Inc. | F — Tax withholding / forfeiture | 1.6K | $18.71 | $30K |
| 2025-04-25 | UCTT | Ultra Clean Holdings, Inc. | A — Grant or award | 14.5K | $0.00 | |
| 2025-03-31 | UCTT | Ultra Clean Holdings, Inc. | F — Tax withholding / forfeiture | 173 | $21.41 | $4K |
Cho Paul Yoonku is a corporate insider — currently tracked as General Counsel and Secretary of Ultra Clean Holdings, Inc. (UCTT). InsiderAlpha tracks every SEC Form 4 filing in real time.
4 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases () and 3 open-market sales ($344K) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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