Cho Paul Yoonku (CIK 1791106) reported 11 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-06-04). Recent activity: Sell UCTT (944 shares), Buy UCTT (8,041 shares), Sell UCTT (2,000 shares), Sell UCTT (1,582 shares), Sell UCTT (1,465 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-04 | Ultra Clean Holdings, Inc. (UCTT) | General Counsel and Secretary | Sell | 944 | $84,365 |
| 2026-05-27 | Ultra Clean Holdings, Inc. (UCTT) | General Counsel and Secretary | Buy | 8,041 | $0 |
| 2026-05-12 | Ultra Clean Holdings, Inc. (UCTT) | General Counsel and Secretary | Sell | 2,000 | $173,780 |
| 2026-05-04 | Ultra Clean Holdings, Inc. (UCTT) | General Counsel and Secretary | Sell | 1,582 | $123,633 |
| 2026-05-04 | Ultra Clean Holdings, Inc. (UCTT) | General Counsel and Secretary | Sell | 1,465 | $114,490 |
| 2026-05-04 | Ultra Clean Holdings, Inc. (UCTT) | General Counsel and Secretary | Sell | 2,454 | $191,780 |
| 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 |
来源：SEC Form 4 申报文件 · 截至 2026-06-04