0000950103-20-008271.txt : 20200428 0000950103-20-008271.hdr.sgml : 20200428 20200428161610 ACCESSION NUMBER: 0000950103-20-008271 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20200424 FILED AS OF DATE: 20200428 DATE AS OF CHANGE: 20200428 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Siu Chris CENTRAL INDEX KEY: 0001389044 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-50646 FILM NUMBER: 20825199 MAIL ADDRESS: STREET 1: 3408 GARRETT DRIVE CITY: SANTA CLARA STATE: CA ZIP: 95054-2803 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Ultra Clean Holdings, Inc. CENTRAL INDEX KEY: 0001275014 STANDARD INDUSTRIAL CLASSIFICATION: SEMICONDUCTORS & RELATED DEVICES [3674] IRS NUMBER: 611430858 STATE OF INCORPORATION: DE FISCAL YEAR END: 1227 BUSINESS ADDRESS: STREET 1: 26462 CORPORATE AVENUE CITY: HAYWARD STATE: CA ZIP: 94545 BUSINESS PHONE: (510) 576-4400 MAIL ADDRESS: STREET 1: 26462 CORPORATE AVENUE CITY: HAYWARD STATE: CA ZIP: 94545 FORMER COMPANY: FORMER CONFORMED NAME: ULTRA CLEAN HOLDINGS INC DATE OF NAME CHANGE: 20031231 4 1 dp126754_4-siu.xml FORM 4 X0306 4 2020-04-24 0 0001275014 Ultra Clean Holdings, Inc. UCTT 0001389044 Siu Chris ULTRA CLEAN HOLDINGS, INC. 26462 CORPORATE AVE HAYWARD CA 94545 0 1 0 0 Chief Accounting Officer & SVP Common Stock 2020-04-24 4 A 0 14734 0 A 49917 D Restricted stock units vest over 3 years with equal parts vesting on each anniversary of the vesting commencement date of April 24, 2020. Excludes performance restricted stock units that will be determined based on performance factors following 2020 fiscal year end. /s/ Paul Y. Cho, as attorney-in-fact for Chris Siu 2020-04-28 EX-24 2 dp126754_ex24.htm EXHIBIT 24

Exhibit 24

POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby constitutes and appoints each of Sheri Savage, Paul Y. Cho, Marty Estkowski, Rizza Velarde and Katarina Uhrinova as the undersigned’s true and lawful attorneys-in-fact to:

(1)

execute for and on behalf of the undersigned, in the undersigned’s capacity as a reporting person pursuant to Section 16 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the rules thereunder of Ultra Clean Holdings, Inc. (the “Company”), Forms 3, 4 and 5 in accordance with Section 16(a) of the Exchange Act;

(2)

do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Form 3, 4 or 5 and timely file such form with the United States Securities and Exchange Commission and stock exchange or similar authority; and

(3)

take any other action of any type whatsoever in connection with the foregoing which, in the opinion of any of such attorneys-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by any of such attorneys-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as any of such attorneys-in-fact may approve in the discretion of any of such attorneys-in-fact.

The undersigned hereby grants to each such attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that any of such attorneys-in-fact, or the substitute or substitutes of any of such attorneys-in-fact, shall lawfully do or cause to be done by virtue of this Power of Attorney and the rights and powers herein granted. The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, are not assuming, nor is the Company assuming, any of the undersigned’s responsibilities to comply with Section 16 of the Exchange Act.

This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4 and 5 with respect to the undersigned’s holdings of and transactions in securities issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 24th day of March, 2020.

Signature: /s/ Chris Siu

Print Name: Chris Siu