超科林半导体 2026年季度报告

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549__________________________________________________ Form 10-Q/A Amendment No. 1 (Mark One)QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Ultra Clean Holdings, Inc. Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to besubmitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter EXPLANATORY NOTE Ultra Clean Holdings, Inc. (the “Company”) is filing this Amendment No. 1 on Form 10-Q/A (this “Amendment”) to its QuarterlyReport on Form 10-Q for the fiscal quarter ended March 27, 2026, which was originally filed with the Securities and ExchangeCommission (the “SEC”) on April 29, 2026 (the “Original Filing”). This Amendment is being filed to revise Part II “Item 5. OtherInformation” by adding Rule 10b5-1 trading arrangements entered into by Sheri Savage, the Company's Chief Financial Officer, and In addition, as required by Rule 12b-15 of the Securities and Exchange Act of 1934, as amended (the “Exchange Act”), newcertifications by the Company’s principal executive officer and principal financial officer are filed herewith as exhibits to thisAmendment, under Item 6 hereof, pursuant to Rule 13a-14(a) or 15d-14(a) of the Exchange Act. Because no financial statements havebeen included in this Amendment and this Amendment does not contain or amend any disclosure with respect to Items 307 and 308 of Other than as expressly set forth herein, this Amendment does not, and does not purport to, amend, update or restate the information inthe Original Filing or reflect any events that have occurred after the Original Filing was made. Information not affected by thisAmendment remains unchanged and reflects the disclosures made at the time as of which the Original Filing was made. No changes ITEM 5. Other Information Insider Trading Arrangements On March 5, 2026, Sheri Savage, the Company's Chief Financial Officer, and Brian Harding, the Company’s Chief AccountingOfficer, each entered into a trading plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the ExchangeAct. Ms. Savage's plan provides for the sale from time to time of up to 74,392 shares of the Company's common stock, subject tocertain minimum price thresholds. Mr. Savage's trading plan is scheduled to terminate on May 31, 2027, subject to early termination. ITEM 6. Exhibits (a) ExhibitsThe following exhibits are filed with this quarterly Report on Form 10-Q for the quarter ended March27, 2026: SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on itsbehalf by the undersigned thereunto duly authorized. Date: May1, 2026 Date: May1, 2026