Cook Christopher S has filed 17 insider transactions across 1 company since November 2023.
Most recent transaction: a sale of 1231 shares of Ultra Clean Holdings, Inc. ($UCTT) on May 04, 2026.
Activity breakdown: 1 open-market purchase and 5 sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 4, 2026 | Ultra Clean Holdings, Inc. | $UCTT | Cook Christopher S | President, Products Division | S | Common Stock | 1231 | $74.55 | 101,527.0000 | 45,400,000 | 1.20% | 0.00% |
| May 4, 2026 | Ultra Clean Holdings, Inc. | $UCTT | Cook Christopher S | President, Products Division | S | Common Stock | 10247 | $73.89 | 102,758.0000 | 45,400,000 | 9.07% | 0.02% |
| April 30, 2026 | Ultra Clean Holdings, Inc. | $UCTT | Cook Christopher S | President, Products Division | F | Common Stock | 4181 | $78.15 | 128,073.0000 | 45,400,000 | 3.16% | 0.01% |
| April 30, 2026 | Ultra Clean Holdings, Inc. | $UCTT | Cook Christopher S | President, Products Division | F | Common Stock | 3165 | $78.15 | 124,908.0000 | 45,400,000 | 2.47% | 0.01% |
| April 30, 2026 | Ultra Clean Holdings, Inc. | $UCTT | Cook Christopher S | President, Products Division | S | Common Stock | 11903 | $75.31 | 113,005.0000 | 45,400,000 | 9.53% | 0.03% |
| April 30, 2026 | Ultra Clean Holdings, Inc. | $UCTT | Cook Christopher S | President, Products Division | F | Common Stock | 1861 | $78.15 | 132,254.0000 | 45,400,000 | 1.39% | 0.00% |
| Aug. 29, 2025 | Ultra Clean Holdings, Inc. | $UCTT | Cook Christopher S | President, Products Division | A | Common Stock | 73686 | $0.00 | 134,115.0000 | 45,300,000 | 121.94% | 0.16% |
| April 30, 2025 | Ultra Clean Holdings, Inc. | $UCTT | Cook Christopher S | President, Products Division | F | Common Stock | 1855 | $18.71 | 65,204.0000 | 45,300,000 | 2.77% | 0.00% |
| April 30, 2025 | Ultra Clean Holdings, Inc. | $UCTT | Cook Christopher S | President, Products Division | F | Common Stock | 2225 | $18.71 | 62,979.0000 | 45,300,000 | 3.41% | 0.00% |
| April 30, 2025 | Ultra Clean Holdings, Inc. | $UCTT | Cook Christopher S | President, Products Division | F | Common Stock | 2550 | $18.71 | 60,429.0000 | 45,300,000 | 4.05% | 0.01% |
| April 25, 2025 | Ultra Clean Holdings, Inc. | $UCTT | Cook Christopher S | President, Products Division | A | Common Stock | 27831 | $0.00 | 67,059.0000 | 45,300,000 | 70.95% | 0.06% |
| March 7, 2025 | Ultra Clean Holdings, Inc. | $UCTT | Cook Christopher S | President, Products Division | P | Common Stock | 4100 | $25.30 | 39,228.0000 | 45,300,000 | 11.67% | 0.01% |
| May 9, 2024 | Ultra Clean Holdings, Inc. | $UCTT | Cook Christopher S | President, Products Division | S | Common Stock | 8586 | $43.51 | 35,128.0000 | 44,700,000 | 19.64% | 0.02% |
| April 30, 2024 | Ultra Clean Holdings, Inc. | $UCTT | Cook Christopher S | President, Products Division | F | Common Stock | 2219 | $41.83 | 46,256.0000 | 44,700,000 | 4.58% | 0.00% |
| April 30, 2024 | Ultra Clean Holdings, Inc. | $UCTT | Cook Christopher S | President, Products Division | F | Common Stock | 2542 | $41.83 | 43,714.0000 | 44,700,000 | 5.50% | 0.01% |
| April 26, 2024 | Ultra Clean Holdings, Inc. | $UCTT | Cook Christopher S | President, Products Division | A | Common Stock | 15560 | $0.00 | 48,475.0000 | 44,700,000 | 47.27% | 0.03% |
| Nov. 14, 2023 | Ultra Clean Holdings, Inc. | $UCTT | Cook Christopher S | President, Products Division | S | Common Stock | 4662 | $26.68 | 32,915.0000 | 45,700,000 | 12.41% | 0.01% |