8-K

Ultra Clean Holdings, Inc. (UCTT)

8-K 2023-11-01 For: 2023-10-30
View Original
Added on April 10, 2026

UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 30, 2023

Ultra Clean Holdings, Inc.

(Exact name of Registrant as Specified in Its Charter)

Delaware 000-50646 61-1430858
(State or Other Jurisdiction<br>of Incorporation) (Commission File Number) (IRS Employer<br>Identification No.)
26462 Corporate Avenue
Hayward, California 94545
(Address of Principal Executive Offices) (Zip Code)
Registrant’s Telephone Number, Including Area Code: 510 576-4400
---
N/A
---

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading<br>Symbol(s) Name of each exchange on which registered
Common Stock, $0.001 par value UCTT The Nasdaq Global Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

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. ☐

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

On October 30, 2023, it was decided that Vijayan Chinnasami, the Chief Operating Officer of Ultra Clean Holdings, Inc. (the “Company”), will be leaving the Company effective December 31, 2023.

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.
Date: November 1, 2023 By: /s/ Paul Y. Cho
Name: Paul Y. Cho<br>Title: General Counsel and Corporate Secretary