Insider · CIK 0001927266
Christopher S Cook
Files at UCTT (Ultra Clean Holdings, Inc.). First filing Mar 11, 2025, latest May 6, 2026.
In brief
Christopher S Cook files SEC Form 4 as president at UCTT (Ultra Clean Holdings, Inc.). Since Mar 11, 2025, Christopher S Cook has reported 1 open-market buy worth $104k and 2 open-market sells worth $1.7M, the latest filed on May 6, 2026.
A track record needs three past buys with six months of prices behind them; Christopher S Cook has 0, so none is measured yet.
The newest scored trade: sold $849k of UCTT on May 4, 2026, filed May 6, 2026, scored 63 (notable). In the last 12 months: 0 buys worth $0 and 2 sells worth $1.7M.
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 |
|---|---|---|---|---|---|
| 63Notable | Ultra Clean Holdings, Inc. | $849k 11,478 shares | -11% | +280% from low-12% from high | |
| 59Moderate | Ultra Clean Holdings, Inc. | $896k 11,903 shares | -10% | +319% from low-6% from high | |
| 53Moderate | Ultra Clean Holdings, Inc. | $104k 4,100 shares | - | - |
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 |
|---|---|---|---|---|---|
| May 4, 2026 | UCTT ULTRA CLEAN HOLDINGS, INC. | 11,478 0.03% of outstanding | $849k | May 4, 2026 | $896k |
| May 1, 2026 | UCTT ULTRA CLEAN HOLDINGS, INC. | 11,903 0.03% of outstanding | $896k | May 1, 2026 | none |
| Nov 14, 2023 | UCTT Ultra Clean Holdings, Inc. | 4,662 0.01% of outstanding | $124k | Nov 14, 2023 | none |
Transactions
Every row this insider has filed, 14 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Aug 31, 2026 | UCTT Ultra Clean Holdings, Inc. | FTax withholding Common Stock | -12,497 | $67.83 | $848k | 98,126 | 42 d ago |
| May 22, 2026 | UCTT Ultra Clean Holdings, Inc. | AGrant or award Common Stock | +13,196 | $0.00 | $0 | 110,623 | May 27, 2026 |
| May 4, 2026 | UCTT Ultra Clean Holdings, Inc. | SOpen-market sale Common Stock | -10,247 | $73.89 | $757k | 98,658 | May 6, 2026 |
| May 4, 2026 | UCTT Ultra Clean Holdings, Inc. | SOpen-market sale Common Stock | -1,231 | $74.55 | $92k | 97,427 | May 6, 2026 |
| Apr 30, 2026 | UCTT Ultra Clean Holdings, Inc. | FTax withholding Common Stock | -1,861 | $78.15 | $145k | 128,154 | May 4, 2026 |
| Apr 30, 2026 | UCTT Ultra Clean Holdings, Inc. | FTax withholding Common Stock | -4,181 | $78.15 | $327k | 123,973 | May 4, 2026 |
| Apr 30, 2026 | UCTT Ultra Clean Holdings, Inc. | FTax withholding Common Stock | -3,165 | $78.15 | $247k | 120,808 | May 4, 2026 |
| Apr 30, 2026 | UCTT Ultra Clean Holdings, Inc. | SOpen-market sale Common Stock | -11,903 | $75.31 | $896k | 108,905 | May 4, 2026 |
| Aug 29, 2025 | UCTT Ultra Clean Holdings, Inc. | AGrant or award Common Stock | +73,686 | $0.00 | $0 | 130,015 | Sep 3, 2025 |
| Apr 30, 2025 | UCTT Ultra Clean Holdings, Inc. | FTax withholding Common Stock | -1,855 | $18.71 | $35k | 61,104 | May 2, 2025 |
| Apr 30, 2025 | UCTT Ultra Clean Holdings, Inc. | FTax withholding Common Stock | -2,225 | $18.71 | $42k | 58,879 | May 2, 2025 |
| Apr 30, 2025 | UCTT Ultra Clean Holdings, Inc. | FTax withholding Common Stock | -2,550 | $18.71 | $48k | 56,329 | May 2, 2025 |
| Apr 25, 2025 | UCTT Ultra Clean Holdings, Inc. | AGrant or award Common Stock | +27,831 | $0.00 | $0 | 62,959 | Apr 29, 2025 |
| Mar 7, 2025 | UCTT Ultra Clean Holdings, Inc. | POpen-market purchase Common Stockindirect: by Trust | +4,100 | $25.30 | $104k | 4,100 | Mar 11, 2025 |
Questions about Christopher S Cook
Answered from the filings on this page, as of the latest one.
Is Christopher S Cook buying or selling?
In the last 12 months Christopher S Cook reported 0 open-market buys worth $0 and 2 open-market sells worth $1.7M on SEC Form 4; the latest was sold $849k of UCTT on May 4, 2026. Grants, option exercises and tax withholding are not counted.
How did Christopher S Cook's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Christopher S Cook has 0.
Where does Christopher S Cook file Form 4?
Christopher S Cook has filed Form 4 at UCTT (Ultra Clean Holdings, Inc.) as President, Products Division. 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.