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Shares were sold in multiple transactions at prices from $129.5900 to $130.2400. 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 (4) to this Form 4."}],"balance_after":33581,"source":{"system":"sec-edgar","filing":"0000950103-26-010375","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326010375/ownership.xml","form_type":"4"}},{"id":713608,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-07-07T23:06:21.000Z","date":"2026-07-02","kind":"sale","planned":true,"acquired":false,"shares":2194,"price":128.3673,"value":281637.8562,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sale reported was effected by the reporting person pursuant to the Rule 10b5-1 trading plan adopted by the reporting person on March 5, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This is the weighted average sale price. Shares were sold in multiple transactions at prices from $127.5050 to $128.5000. 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 (3) to this Form 4."}],"balance_after":34784,"source":{"system":"sec-edgar","filing":"0000950103-26-010375","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326010375/ownership.xml","form_type":"4"}},{"id":713607,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-07-07T23:06:21.000Z","date":"2026-07-02","kind":"sale","planned":true,"acquired":false,"shares":440,"price":126.9161,"value":55843.084,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sale reported was effected by the reporting person pursuant to the Rule 10b5-1 trading plan adopted by the reporting person on March 5, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This is the weighted average sale price. Shares were sold in multiple transactions at prices from $126.3500 to $127.1650. 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 (2) to this Form 4."}],"balance_after":36978,"source":{"system":"sec-edgar","filing":"0000950103-26-010375","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326010375/ownership.xml","form_type":"4"}},{"id":722775,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-07-01T01:35:49.000Z","date":"2026-06-26","kind":"grant","planned":false,"acquired":true,"shares":9363,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Restricted stock units vest over 3 years with equal parts vesting on each anniversary of the vesting commencement date of June 26, 2026."}],"balance_after":37418,"source":{"system":"sec-edgar","filing":"0000950103-26-009883","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326009883/ownership.xml","form_type":"4"}},{"id":746186,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-08T23:59:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":663,"price":91.38,"value":60584.94,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F21","text":"This is the weighted average sale price. Shares were sold in multiple transactions at prices from $90.9900 to $91.8400. 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 (21)."}],"balance_after":28055,"source":{"system":"sec-edgar","filing":"0000950103-26-008671","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":22,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326008671/ownership.xml","form_type":"4"}},{"id":746185,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-08T23:59:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":986,"price":90.55,"value":89282.3,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F20","text":"This is the weighted average sale price. Shares were sold in multiple transactions at prices from $89.9800 to $90.9000. 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 (20)."}],"balance_after":28718,"source":{"system":"sec-edgar","filing":"0000950103-26-008671","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":21,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326008671/ownership.xml","form_type":"4"}},{"id":746184,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-08T23:59:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":1056,"price":89.33,"value":94332.48,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F19","text":"This is the weighted average sale price. Shares were sold in multiple transactions at prices from $88.8200 to $89.7800. 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 (19)."}],"balance_after":29704,"source":{"system":"sec-edgar","filing":"0000950103-26-008671","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":20,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326008671/ownership.xml","form_type":"4"}},{"id":746183,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-08T23:59:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":1002,"price":88.36,"value":88536.72,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F18","text":"This is the weighted average sale price. Shares were sold in multiple transactions at prices from $87.7950 to $88.7100. 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 (18)."}],"balance_after":30760,"source":{"system":"sec-edgar","filing":"0000950103-26-008671","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":19,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326008671/ownership.xml","form_type":"4"}},{"id":746182,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-08T23:59:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":496,"price":87.22,"value":43261.12,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F17","text":"This is the weighted average sale price. Shares were sold in multiple transactions at prices from $86.5900 to $87.5000. 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 (17)."}],"balance_after":31762,"source":{"system":"sec-edgar","filing":"0000950103-26-008671","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":18,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326008671/ownership.xml","form_type":"4"}},{"id":746181,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-08T23:59:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":117,"price":91.63,"value":10720.71,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F16","text":"This is the weighted average sale price. Shares were sold in multiple transactions at prices from $91.5350 to $91.8200. 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 (16)."}],"balance_after":32258,"source":{"system":"sec-edgar","filing":"0000950103-26-008671","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":17,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326008671/ownership.xml","form_type":"4"}},{"id":746180,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-08T23:59:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":375,"price":90.76,"value":34035.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F15","text":"This is the weighted average sale price. Shares were sold in multiple transactions at prices from $90.4400 to $91.1800. 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 (15)."}],"balance_after":32375,"source":{"system":"sec-edgar","filing":"0000950103-26-008671","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":16,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326008671/ownership.xml","form_type":"4"}},{"id":746179,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-08T23:59:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":169,"price":89.67,"value":15154.23,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F14","text":"This is the weighted average sale price. Shares were sold in multiple transactions at prices from $89.4350 to $90.0900. 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 (14)."}],"balance_after":32750,"source":{"system":"sec-edgar","filing":"0000950103-26-008671","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326008671/ownership.xml","form_type":"4"}},{"id":746178,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-08T23:59:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":381,"price":88.76,"value":33817.56,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F13","text":"This is the weighted average sale price. Shares were sold in multiple transactions at prices from $88.3650 to $89.2250. 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 (13)."}],"balance_after":32919,"source":{"system":"sec-edgar","filing":"0000950103-26-008671","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326008671/ownership.xml","form_type":"4"}},{"id":746177,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-08T23:59:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":226,"price":87.71,"value":19822.46,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F12","text":"This is the weighted average sale price. Shares were sold in multiple transactions at prices from $87.3000 to $88.1700. 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 (12)."}],"balance_after":33300,"source":{"system":"sec-edgar","filing":"0000950103-26-008671","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326008671/ownership.xml","form_type":"4"}},{"id":746176,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-08T23:59:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":54,"price":86,"value":4644.0,"ownership":{"direct":true},"balance_after":33526,"source":{"system":"sec-edgar","filing":"0000950103-26-008671","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326008671/ownership.xml","form_type":"4"}},{"id":746175,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-08T23:59:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":389,"price":91.59,"value":35628.51,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F11","text":"This is the weighted average sale price. Shares were sold in multiple transactions at prices from $91.2400 to $91.8200. 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 (11)."}],"balance_after":33580,"source":{"system":"sec-edgar","filing":"0000950103-26-008671","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326008671/ownership.xml","form_type":"4"}},{"id":746174,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-08T23:59:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":1277,"price":90.73,"value":115862.21,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F10","text":"This is the weighted average sale price. Shares were sold in multiple transactions at prices from $90.2150 to $91.0900. 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 (10)."}],"balance_after":33969,"source":{"system":"sec-edgar","filing":"0000950103-26-008671","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326008671/ownership.xml","form_type":"4"}},{"id":746173,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-08T23:59:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":886,"price":89.36,"value":79172.96,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F9","text":"This is the weighted average sale price. Shares were sold in multiple transactions at prices from $89.0900 to $89.6400. 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 (9)."}],"balance_after":35246,"source":{"system":"sec-edgar","filing":"0000950103-26-008671","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326008671/ownership.xml","form_type":"4"}},{"id":746172,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-08T23:59:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":1199,"price":88.47,"value":106075.53,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F8","text":"This is the weighted average sale price. Shares were sold in multiple transactions at prices from $87.9900 to $88.9750. 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 (8)."}],"balance_after":36132,"source":{"system":"sec-edgar","filing":"0000950103-26-008671","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1672993/000095010326008671/ownership.xml","form_type":"4"}},{"id":746171,"issuer":{"id":1193,"kind":"organization","name":"Ultra Clean Holdings, Inc.","symbol":"UCTT"},"owners":[{"id":31692,"kind":"person","name":"HARDING BRIAN E","position":1,"cik":"0001672993","reported_name":"HARDING BRIAN E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-08T23:59:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":488,"price":87.25,"value":42578.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F7","text":"This is the weighted average sale price. 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