Insider · CIK 0001791106
Paul Yoonku Cho
Files at UCTT (Ultra Clean Holdings, Inc.). First filing Jun 10, 2025, latest Jun 4, 2026.
In brief
Paul Yoonku Cho files SEC Form 4 as officer at UCTT (Ultra Clean Holdings, Inc.). Since Jun 10, 2025, Paul Yoonku Cho has reported 0 open-market buys worth $0 and 3 open-market sells worth $344k, the latest filed on Jun 4, 2026.
A track record needs three past buys with six months of prices behind them; Paul Yoonku Cho has 0, so none is measured yet.
The newest scored trade: sold $84k of UCTT on Jun 2, 2026, filed Jun 4, 2026, scored 39 (weak). In the last 12 months: 0 buys worth $0 and 2 sells worth $258k.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
UCTT: Ultra Clean Holdings, Inc.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 39Weak | Ultra Clean Holdings, Inc. | $84k 944 shares | -4% | +361% from low-2% from high | |
| 46Moderate | Ultra Clean Holdings, Inc. | $174k 2,000 shares | -11% | +350% from low0% from high | |
| 37Weak | Ultra Clean Holdings, Inc. | $86k 4,084 shares | -15% | +16% from low-49% from high |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Jun 2, 2026 | UCTT ULTRA CLEAN HOLDINGS, INC. | 944 0.00% of outstanding | $84k | Jun 2, 2026 | $174k |
| May 8, 2026 | UCTT ULTRA CLEAN HOLDINGS, INC. | 2,000 0.00% of outstanding | $174k | May 8, 2026 | none |
| Jun 6, 2025 | UCTT ULTRA CLEAN HOLDINGS, INC. | 4,084 0.01% of outstanding | $86k | Jun 6, 2025 | none |
Transactions
Every row this insider has filed, 12 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jun 2, 2026 | UCTT Ultra Clean Holdings, Inc. | SOpen-market sale Common Stock | -944 | $89.37 | $84k | 22,941 | Jun 4, 2026 |
| May 22, 2026 | UCTT Ultra Clean Holdings, Inc. | AGrant or award Common Stock | +8,041 | $0.00 | $0 | 23,885 | May 27, 2026 |
| May 8, 2026 | UCTT Ultra Clean Holdings, Inc. | SOpen-market sale Common Stock | -2,000 | $86.89 | $174k | 15,844 | May 12, 2026 |
| Apr 30, 2026 | UCTT Ultra Clean Holdings, Inc. | FTax withholding Common Stock | -1,582 | $78.15 | $124k | 21,763 | May 4, 2026 |
| Apr 30, 2026 | UCTT Ultra Clean Holdings, Inc. | FTax withholding Common Stock | -1,465 | $78.15 | $114k | 20,298 | May 4, 2026 |
| Apr 30, 2026 | UCTT Ultra Clean Holdings, Inc. | FTax withholding Common Stock | -2,454 | $78.15 | $192k | 17,844 | May 4, 2026 |
| Jun 6, 2025 | UCTT Ultra Clean Holdings, Inc. | SOpen-market sale Common Stock | -4,084 | $21.06 | $86k | 23,345 | Jun 10, 2025 |
| Apr 30, 2025 | UCTT Ultra Clean Holdings, Inc. | FTax withholding Common Stock | -1,579 | $18.71 | $30k | 29,886 | May 2, 2025 |
| Apr 30, 2025 | UCTT Ultra Clean Holdings, Inc. | FTax withholding Common Stock | -1,462 | $18.71 | $27k | 28,424 | May 2, 2025 |
| Apr 30, 2025 | UCTT Ultra Clean Holdings, Inc. | FTax withholding Common Stock | -995 | $18.71 | $19k | 27,429 | May 2, 2025 |
| Apr 25, 2025 | UCTT Ultra Clean Holdings, Inc. | AGrant or award Common Stock | +14,472 | $0.00 | $0 | 31,465 | Apr 29, 2025 |
| Mar 31, 2025 | UCTT Ultra Clean Holdings, Inc. | FTax withholding Common Stock | -173 | $21.41 | $3,704 | 16,993 | Apr 2, 2025 |
Questions about Paul Yoonku Cho
Answered from the filings on this page, as of the latest one.
Is Paul Yoonku Cho buying or selling?
In the last 12 months Paul Yoonku Cho reported 0 open-market buys worth $0 and 2 open-market sells worth $258k on SEC Form 4; the latest was sold $84k of UCTT on Jun 2, 2026. Grants, option exercises and tax withholding are not counted.
How did Paul Yoonku Cho's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Paul Yoonku Cho has 0.
Where does Paul Yoonku Cho file Form 4?
Paul Yoonku Cho has filed Form 4 at UCTT (Ultra Clean Holdings, Inc.) as General Counsel and Secretary. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.