Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Ultra Clean Holdings, Inc.UCTT · Entity 1193 | President, Products Division | August 31, 2026 | September 03, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
Ultra Clean Holdings, Inc.
Report date August 31, 2026 · Filed September 03, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 98,126 |
Reported balance
After 2026-08-31 transaction · row 1
1 source rowRow 1 · 2026-08-31 · Tax withholding · Disposed 12,497 · Balance 98,126 F1: Represents shares automatically withheld for payment of tax liability arising as a result of the partial settlement of restricted stock unit awards that vested. |
| Common StockSEC Table I · non-derivative | Indirectby Trust | 4,100 |
Reported balance
Holding disclosure · report date 2026-08-31 · row 2
Holding and transaction disclosures are not merged.
1 source rowRow 2 · Balance 4,100 |
Filing footnotes · ownership attribution and instrument terms
F1: Represents shares automatically withheld for payment of tax liability arising as a result of the partial settlement of restricted stock unit awards that vested.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| August 31, 2026 Filed Sep 3, 2026 00:36 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | Tax withholdingCommon Stock | 12,497 | $67.83 | $847,671.51 |
DisclosureSEC source: 0000950103-26-013530 · ownership.xml · nonDerivative · entry 1 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 98,126 F1 · shares: Represents shares automatically withheld for payment of tax liability arising as a result of the partial settlement of restricted stock unit awards that vested. Read SEC document |
| May 22, 2026 Filed May 28, 2026 01:52 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | GrantCommon Stock | 13,196 | $0.00 | $0.00 |
DisclosureSEC source: 0000950103-26-007863 · ownership.xml · nonDerivative · entry 1 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 110,623 F1 · shares: Restricted stock units vest over 3 years with equal parts vesting on each anniversary of the vesting commencement date of May 22, 2026. Read SEC document |
| May 04, 2026 Filed May 6, 2026 23:37 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | SaleCommon Stock | 1,231 | $74.55 | $91,771.05 |
DisclosureSEC source: 0000950103-26-006917 · ownership.xml · nonDerivative · entry 2 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 97,427 F2 · price: This is the weighted average sale price. Shares were sold in multiple transactions at prices from $74.3700 to $74.9050. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (2). Read SEC document |
| May 04, 2026 Filed May 6, 2026 23:37 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | SaleCommon Stock | 10,247 | $73.89 | $757,150.83 |
DisclosureSEC source: 0000950103-26-006917 · ownership.xml · nonDerivative · entry 1 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 98,658 F1 · price: This is the weighted average sale price. Shares were sold in multiple transactions at prices from $73.3600 to $74.3500. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1). Read SEC document |
| April 30, 2026 Filed May 5, 2026 01:11 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | SaleCommon Stock | 11,903 | $75.31 | $896,414.93 |
DisclosureSEC source: 0000950103-26-006811 · ownership.xml · nonDerivative · entry 4 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 108,905 F2 · price: This is the weighted average sale price. Shares were sold in multiple transactions at prices from $75.1503 to $75.6900. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (2). Read SEC document |
| April 30, 2026 Filed May 5, 2026 01:11 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | Tax withholdingCommon Stock | 3,165 | $78.15 | $247,344.75 |
DisclosureSEC source: 0000950103-26-006811 · ownership.xml · nonDerivative · entry 3 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 120,808 F1 · shares: Represents shares automatically withheld for payment of tax liability arising as a result of the partial settlement of restricted stock unit awards that vested. Read SEC document |
| April 30, 2026 Filed May 5, 2026 01:11 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | Tax withholdingCommon Stock | 4,181 | $78.15 | $326,745.15 |
DisclosureSEC source: 0000950103-26-006811 · ownership.xml · nonDerivative · entry 2 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 123,973 F1 · shares: Represents shares automatically withheld for payment of tax liability arising as a result of the partial settlement of restricted stock unit awards that vested. Read SEC document |
| April 30, 2026 Filed May 5, 2026 01:11 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | Tax withholdingCommon Stock | 1,861 | $78.15 | $145,437.15 |
DisclosureSEC source: 0000950103-26-006811 · ownership.xml · nonDerivative · entry 1 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 128,154 F1 · shares: Represents shares automatically withheld for payment of tax liability arising as a result of the partial settlement of restricted stock unit awards that vested. Read SEC document |
| August 29, 2025 Filed Sep 4, 2025 00:28 UTC | Ultra Clean Holdings, Inc. UCTI · Entity 1193 | GrantCommon Stock | 73,686 | $0.00 | $0.00 |
DisclosureSEC source: 0000950103-25-011240 · dp233988_4-cook.xml · nonDerivative · entry 1 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 130,015 F1 · shares: Restricted stock units vest over 3 years with equal parts vesting on each anniversary of the vesting commencement date of August 29, 2025. Read SEC document |
| April 30, 2025 Filed May 3, 2025 01:01 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | Tax withholdingCommon Stock | 2,550 | $18.71 | $47,710.50 |
DisclosureSEC source: 0000950103-25-005713 · dp228529_4-cook.xml · nonDerivative · entry 3 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 56,329 F1 · shares: Represents shares automatically withheld for payment of tax liability arising as a result of the partial settlement of restricted stock unit awards that vested. Read SEC document |
| April 30, 2025 Filed May 3, 2025 01:01 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | Tax withholdingCommon Stock | 2,225 | $18.71 | $41,629.75 |
DisclosureSEC source: 0000950103-25-005713 · dp228529_4-cook.xml · nonDerivative · entry 2 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 58,879 F1 · shares: Represents shares automatically withheld for payment of tax liability arising as a result of the partial settlement of restricted stock unit awards that vested. Read SEC document |
| April 30, 2025 Filed May 3, 2025 01:01 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | Tax withholdingCommon Stock | 1,855 | $18.71 | $34,707.05 |
DisclosureSEC source: 0000950103-25-005713 · dp228529_4-cook.xml · nonDerivative · entry 1 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 61,104 F1 · shares: Represents shares automatically withheld for payment of tax liability arising as a result of the partial settlement of restricted stock unit awards that vested. Read SEC document |
| April 25, 2025 Filed Apr 30, 2025 01:01 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | GrantCommon Stock | 27,831 | $0.00 | $0.00 |
DisclosureSEC source: 0000950103-25-005447 · dp228265_4-cook.xml · nonDerivative · entry 1 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 62,959 F1 · shares: Restricted stock units vest over 3 years with equal parts vesting on each anniversary of the vesting commencement date of April 25, 2025. Read SEC document |
| March 07, 2025 Filed Mar 11, 2025 22:41 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | PurchaseCommon Stock | 4,100 | $25.30 | $103,709.50 |
DisclosureSEC source: 0000950103-25-003280 · dp226169_4-cook.xml · nonDerivative · entry 2 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Indirect · by Trust Disclosed balance after: 4,100 F1 · ownership.nature: On March 7, 2025, the reporting person acquired 4,100 shares of UCT common stock through The Cook Family Trust. The reporting person is trustee of the trust, and the reporting person and members of his family are the sole beneficiaries of the trust. The reporting person remains the beneficial owner of the securities held by the trust. Read SEC document |
| May 09, 2024 Filed May 13, 2024 22:53 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | SaleCommon Stock | 8,586 | $43.51 | $373,581.15 |
DisclosureSEC source: 0000950103-24-006619 · dp211153_4-cook.xml · nonDerivative · entry 1 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 35,128 F1 · price: This is the weighted average sale price. Shares were sold in multiple transactions at prices from 43.0700 to $43.9400. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (1) to this Form 4. Read SEC document |
| April 30, 2024 Filed May 3, 2024 00:45 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | Tax withholdingCommon Stock | 2,542 | $41.83 | $106,331.86 |
DisclosureSEC source: 0000950103-24-006313 · dp210845_4-cook.xml · nonDerivative · entry 2 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 43,714 F1 · shares: Represents shares automatically withheld for payment of tax liability arising as a result of the partial settlement of restricted stock unit awards that vested. Read SEC document |
| April 30, 2024 Filed May 3, 2024 00:45 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | Tax withholdingCommon Stock | 2,219 | $41.83 | $92,820.77 |
DisclosureSEC source: 0000950103-24-006313 · dp210845_4-cook.xml · nonDerivative · entry 1 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 46,256 F1 · shares: Represents shares automatically withheld for payment of tax liability arising as a result of the partial settlement of restricted stock unit awards that vested. Read SEC document |
| April 26, 2024 Filed May 1, 2024 01:58 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | GrantCommon Stock | 15,560 | $0.00 | $0.00 |
DisclosureSEC source: 0000950103-24-006079 · dp210626_4-cook.xml · nonDerivative · entry 1 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 48,475 F1 · shares: Restricted stock units vest over 3 years with equal parts vesting on each anniversary of the vesting commencement date of April 26, 2024. Read SEC document |
| November 14, 2023 Filed Apr 15, 2024 23:25 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | SaleCommon Stock | 4,662 | $26.68 | $124,382.16 |
DisclosureSEC source: 0000950103-24-005329 · dp209873_4-cook.xml · nonDerivative · entry 1 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 32,915 F1 · date: Due to an administrative oversight, this sale in connection with the vesting and settlement of restricted stock units was not timely filed. F2 · balance_after: Represents shares currently held. Read SEC document |
| April 30, 2023 Filed May 2, 2023 23:24 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | Tax withholdingCommon Stock | 2,464 | $28.54 | $70,322.56 |
DisclosureSEC source: 0000950103-23-006768 · dp193278_4-cook.xml · nonDerivative · entry 2 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 37,577 F2 · shares: Represents shares automatically withheld for payment of tax liability arising as a result of the partial settlement of restricted stock unit awards that vested. Read SEC document |
| April 28, 2023 Filed May 2, 2023 23:24 UTC | Ultra Clean Holdings, Inc. UCTT · Entity 1193 | GrantCommon Stock | 18,661 | $0.00 | $0.00 |
DisclosureSEC source: 0000950103-23-006768 · dp193278_4-cook.xml · nonDerivative · entry 1 Cook Christopher S · CIK 0001927266 · President, Products Division 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 40,041 F1 · shares: Restricted stock units vest over 3 years with equal parts vesting on each anniversary of the vesting commencement date of April 28, 2023. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.