Cho Paul Yoonku (CIK 1791106) reported 7 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-12). Recent activity: Sell UCTT (2,000 shares), Sell UCTT (4,084 shares), Sell UCTT (1,579 shares), Sell UCTT (1,462 shares), Sell UCTT (995 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-12 | Ultra Clean Holdings, Inc. (UCTT) | General Counsel and Secretary | Sell | 2,000 | $173,780 |
| 2025-06-10 | Ultra Clean Holdings, Inc. (UCTT) | General Counsel and Secretary | Sell | 4,084 | $86,009 |
| 2025-05-02 | Ultra Clean Holdings, Inc. (UCTT) | General Counsel and Secretary | Sell | 1,579 | $29,543 |
| 2025-05-02 | Ultra Clean Holdings, Inc. (UCTT) | General Counsel and Secretary | Sell | 1,462 | $27,354 |
| 2025-05-02 | Ultra Clean Holdings, Inc. (UCTT) | General Counsel and Secretary | Sell | 995 | $18,616 |
| 2025-04-29 | Ultra Clean Holdings, Inc. (UCTT) | General Counsel and Secretary | Buy | 14,472 | $0 |
| 2025-04-02 | Ultra Clean Holdings, Inc. (UCTT) | General Counsel and Secretary | Sell | 173 | $3,704 |
Source: SEC Form 4 filings · as of 2026-05-12