FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * WIER BRUCE C   2. Issuer Name and Ticker or Trading Symbol Ultra Clean Holdings, Inc. [UCTT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) SVP, Engineering (Last) (First) (Middle) ULTRA CLEAN HOLDINGS, INC., 26462 CORPORATE AVE 3. Date of Earliest Transaction (Month/Day/Year) 02/27/2015 (Street) HAYWARD, CA 94545 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock (1) 02/27/2015   A   6,000 A $ 0 32,619 D   Common Stock 02/28/2015   F   333 (2) D $ 8.26 32,286 D   Common Stock 02/28/2015   F   1,100 (3) D $ 8.26 31,186 D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
WIER BRUCE C ULTRA CLEAN HOLDINGS, INC. 26462 CORPORATE AVE HAYWARD, CA 94545			SVP, Engineering

Signatures

/s/ Angie Sandoval, as attorney-in-fact for Bruce C. Wier		03/03/2015
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Restricted stock units vest over 3 years with equal parts vesting on each anniversary of the vesting commencement date of February 27, 2015. Excludes performance restricted stock units that will be determined based on performance factors following 2015 fiscal year end.
(2)	Represents shares withheld for payment of tax liability arising as a result of the partial settlement of a performance restricted stock unit award originally reported by the reporting person on the Form 4 filed with the Commission on February 13, 2015.
(3)	Represents shares withheld for payment of tax liability arising as a result of the partial settlement of a restricted stock unit award originally reported by the reporting person on the Form 4 filed with the Commission on March 4, 2014.

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