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UCTT · Amended Quarterly Report (Form 10-Q/A) · Filed May 1, 2026

Ultra Clean Holdings Inc — Amended Quarterly Report (Form 10-Q/A)

Form
10-Q/A
Filed
May 1, 2026
Period
Mar 27, 2026
Ticker
UCTT
Accession
0001628280-26-029413
About Ultra Clean Holdings Inc
Market cap
$4.0B
1Y TSR
+297.4%
3Y TSR
+31.6%
Board grade
A-
Sector
Technology
CEO
Jinsong (“James”) Xiao
Last annual meeting: May 22, 2026 · View full Ultra Clean Holdings Inc profile →
uctt-20260327

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
__________________________________________________
Form 10-Q/A
__________________________________________________

Amendment No. 1

(Mark One)
x
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended March 27, 2026
or
o
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from____________to
Commission file number 000-50646
__________________________________________________

UCT Logo.jpg
Ultra Clean Holdings, Inc.
(Exact name of registrant as specified in its charter)
__________________________________________________
Delaware61-1430858
(State or other jurisdiction of
incorporation or organization)
(I.R.S. Employer
Identification No.)
26462 Corporate Avenue, Hayward, California
94545
(Address of principal executive offices)(Zip Code)
(510) 576-4400
Registrant’s telephone number, including area code
__________________________________________________
Securities registered pursuant to Section 12(b) of the Act:
Title of each class
Trading
Symbol(s)
Name of each exchange on which registered
Common stock, par value $0.001 per shareUCTTThe Nasdaq Stock Market, LLC
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  o
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  x    No  o
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.:
Large accelerated filer
xAccelerated filero
Non-accelerated fileroSmaller reporting companyo
Emerging growth companyo
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No x
Number of shares outstanding of the issuer’s common stock as of April 23, 2026: 44,828,352



EXPLANATORY NOTE
Ultra Clean Holdings, Inc. (the “Company”) is filing this Amendment No. 1 on Form 10-Q/A (this “Amendment”) to its Quarterly Report on Form 10-Q for the fiscal quarter ended March 27, 2026, which was originally filed with the Securities and Exchange Commission (the “SEC”) on April 29, 2026 (the “Original Filing”). This Amendment is being filed to revise Part II “Item 5. Other Information” by adding Rule 10b5-1 trading arrangements entered into by Sheri Savage, the Company's Chief Financial Officer, and Brian Harding, the Company’s Chief Accounting Officer, during the quarter ended March 27, 2026, which was inadvertently omitted from the disclosure included in the Original Filing.
In addition, as required by Rule 12b-15 of the Securities and Exchange Act of 1934, as amended (the “Exchange Act”), new certifications by the Company’s principal executive officer and principal financial officer are filed herewith as exhibits to this Amendment, under Item 6 hereof, pursuant to Rule 13a-14(a) or 15d-14(a) of the Exchange Act. Because no financial statements have been included in this Amendment and this Amendment does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4 and 5 of the certifications have been omitted. The Company is also not including new certifications under Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. 1350) (Section 906 of the Sarbanes-Oxley Act of 2002), as no financial statements are being filed with this Amendment.
Other than as expressly set forth herein, this Amendment does not, and does not purport to, amend, update or restate the information in the Original Filing or reflect any events that have occurred after the Original Filing was made. Information not affected by this Amendment remains unchanged and reflects the disclosures made at the time as of which the Original Filing was made. No changes have been made to the financial statements of the Company as contained in the Original Filing. Accordingly, this Amendment should be read together with the Original Filing and the Company’s other filings with the SEC.
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 Accounting Officer, each entered into a trading plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act. 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 to certain minimum price thresholds. Mr. Savage's trading plan is scheduled to terminate on May 31, 2027, subject to early termination. Mr. Harding's plan provides for the sale from time to time of up to 38,207 shares of the Company’s common stock, subject to certain minimum price thresholds. Mr. Harding's trading plan is scheduled to terminate on June 4, 2027, subject to early termination.






ITEM 6. Exhibits
(a)Exhibits
The following exhibits are filed with this quarterly Report on Form 10-Q for the quarter ended March 27, 2026:
Exhibit
Number
Description
31.1
31.2
101.INSInline XBRL Instance Document – the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCHInline XBRL Taxonomy Extension Schema Document
101.CALInline XBRL Taxonomy Calculation Linkbase Document
101.DEFInline XBRL Taxonomy Definition Linkbase Document
101.LABInline XBRL Taxonomy Label Linkbase Document
101.PREInline XBRL Taxonomy Extension Presentation Linkbase Document
104Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibit 101)



SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
ULTRA CLEAN HOLDINGS, INC.
(Registrant)
Date: May 1, 2026
By:/S/ JAMES XIAO
Name:James Xiao
Title:Chief Executive Officer
(Principal Executive Officer and duly
authorized signatory)
Date: May 1, 2026
By:/S/ SHERI SAVAGE
Name:Sheri Savage
Title:Chief Financial Officer
(Principal Financial Officer and duly
authorized signatory)

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Reference

Frequently asked questions

When did Ultra Clean Holdings Inc file this 10-Q/A?
Ultra Clean Holdings Inc (UCTT) filed this Amended Quarterly Report (Form 10-Q/A) with the SEC on May 1, 2026. The accession number assigned by EDGAR is 0001628280-26-029413.
What does a 10-Q/A disclose?
Form 10-Q is the SEC's quarterly report. Public companies file it after each of the first three fiscal quarters to disclose unaudited financial statements and management's discussion of operations. The fourth-quarter results are rolled into the annual 10-K instead.
How is a 10-Q different from a 10-K?
Form 10-Q is filed three times a year (after Q1, Q2, and Q3 — the fourth quarter rolls into the 10-K). 10-Qs contain unaudited interim financial statements and a shorter MD&A. They're due 40 or 45 days after quarter end depending on filer size.
Where can I find Ultra Clean Holdings Inc's prior quarterly reports on EDGAR?
The SEC EDGAR browser lists every 10-Q/A Ultra Clean Holdings Inc has filed under CIK 1275014, sortable by date. Use the "View on SEC EDGAR" link in the page header, or browse directly via https://www.sec.gov/cgi-bin/browse-edgar.
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