Document:

Exhibit 10.7

EMPLOYMENT AGREEMENT

     EMPLOYMENT AGREEMENT (“Agreement”) dated as of June 29, 2006, by and among Ultra
Clean Holdings, Inc., a Delaware corporation (together with its successors, the “Company”), and Leonard Mezhvinsky (“Executive”), to be effective as of the Effective Time (as defined in the Merger Agreement) (the “Effective
Date”). 

     WHEREAS, upon consummation of the transactions contemplated by the Agreement and Plan of Merger dated as of June 29, 2006 (the “Merger Agreement”), among Sieger Engineering, Inc. (the “Target”), the Company
and certain other parties named therein, Target will become a subsidiary of the Company; 

WHEREAS, Executive is currently employed by Target;

     WHEREAS, the Company considers it in its best interests to foster the continued employment of Executive with the Company or one of its affiliates from and after the Effective Date;

     WHEREAS, Executive is willing to continue his employment on and after the Effective Date on the terms hereinafter set forth in this Agreement; 

     NOW THEREFORE, in consideration of the foregoing and of the mutual covenants and agreements of the parties set forth in this Agreement, and of other good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged, the parties hereto, intending to be legally bound, agree as follows:

ARTICLE 1 

POSITION; TERM OF AGREEMENT

     Section 1.01. Position. (a) As of and following the Effective Date, Executive shall serve
as President of the Company and its applicable subsidiaries. Executive shall report to the Chief Executive Officer of the Company. Executive shall have such duties and authority, consistent with such position, as shall be determined from time to
time by the Company.

     (b) The Company shall recommend to the Nominating and Corporate Governance Committee that Executive be nominated as a member of the Company’s Board of Directors (the
“Board”) as of the appointment of an independent director to the Board. 

     (c) During the Employment Term (as defined below), Executive will devote substantially all of his business time to the performance of his duties under

this Agreement and will not engage in any other business, profession or occupation for compensation or otherwise which would conflict with the rendition of such services either directly or indirectly, without the
prior written consent of the Board. 

     Section 1.02. Term. The term of this Agreement (the “Employment Term”) shall commence on the Effective Date and end on the anniversary of the Effective Date, subject to earlier termination if Executive’s employment is terminated by
written notice by either party (subject to the terms of this Agreement) or extension by mutual written agreement of the parties. 

ARTICLE 2 

COMPENSATION AND BENEFITS

     Section 2.01. Base Salary. Commencing on the Effective Date, the Company shall pay
Executive an initial annual base salary (the “Base Salary”) at the annual rate of $297,500, payable in accordance with the payroll and
personnel practices of the Company from time to time. Executive’s compensation package shall be subject to periodic review by the Board or a committee of the Board. 

     Section 2.02. Bonus. Executive shall be eligible to participate in an executive bonus plan
in accordance with the terms and conditions of such plan. Executive’s target bonus opportunity shall be $148,750, subject to meeting such performance criteria (including Company performance goals and/or individual performance goals) as
shall be set by the Board or the Compensation Committee of the Board in its discretion. 

     Section 2.03. Stock Options. Promptly after the Effective Date and subject to approval by
the Board, the Company shall grant to Executive an option (the “Option”) to purchase 315,000 shares of common stock of the Company (“Common Stock”), at an exercise price per share equal to the fair market value (determined in accordance with
the terms of the Company’s stock incentive plan) of a share of Common Stock on the grant date. Subject to Executive’s continued employment with the Company or one of its subsidiaries as of the applicable vesting date, the Option shall
become vested over four years as follows: (i) 25% of the shares constituting the Option shall become vested and exercisable on the first anniversary of the Effective Date, and (ii) thereafter, 1/48 of the shares constituting the Option shall become
vested and exercisable per month. Upon a Change of Control (as defined below), the Option shall become fully vested. Except as set forth herein, the Option shall otherwise be subject to the terms of the Company’s stock incentive plan. 

2

     Section 2.04. Employee Benefits. Subject to the terms of the applicable plans, Executive
shall be eligible during the Employment Term for employee benefits substantially similar to those benefits made available generally to senior executives of the Company. 

     Section 2.05. Business And Travel Expenses. Reasonable travel, entertainment and other
business expenses incurred by Executive in the performance of Executive’s duties hereunder shall be reimbursed by the Company in accordance with the Company’s policies as in effect from time to time. 

ARTICLE 3 

CERTAIN TERMINATION BENEFITS

     Section 3.01. Involuntary Termination. (a) A “Qualifying Event” means (i) the termination of Executive’s employment by the Company without Cause (other than by reason of Executive’s death or disability) at any time or
(ii) the termination of Executive’s employment by Executive with Good Reason within six months after a Change of Control. 

     (b) In the event of any termination of employment
during the Employment Term upon a Qualifying Event, Executive shall be entitled to the following benefits (the “Severance Benefits”), subject to
Executive signing and not revoking a release of claims in a form reasonably acceptable to the Company and Executive’s continued compliance with the covenants set forth in Section 4.01 hereof or of the Corporate Opportunity Agreement:

     (i) The Company shall (A) continue to pay Executive’s base salary for 12 months
following the date of termination and (B) pay Executive as soon as practicable a lump sum, in cash, equal to Executive’s earned but unpaid bonus, if any, as of the date of termination; provided that is the intention of the parties that the timing of the payments under this clause (i) shall be made in compliance with Section 409A of the Code.

     (ii) Continuation of medical and dental benefits for Executive and his dependents
substantially similar to, and at the same cost to Executive of, those provided immediately prior to the date of termination until the earlier to occur of (A) the end of the 12-month period after the date of termination and (B) such time as Executive
is covered by comparable programs of a subsequent employer. 

     (iii) Subject to Section 2.03 above, the portion of any options to purchase stock in
the Company held by Executive under the Company’s employee stock option plan which would have become vested and exercisable within the 12-month period following the date of termination shall become fully vested and exercisable on the date of
such termination.

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     (c) The benefits provided under this Section shall
be in lieu of any severance benefits under any plans, programs, policies or practices of the Company and its subsidiaries and shall be reduced by amounts due, or notice period required, under the WARN Act or other applicable law. 

     Section 3.02. At-Will Employment Status. Nothing contained in this Agreement shall
interfere with the at-will employment status of Executive or with the Company’s or Executive’s right to terminate Executive’s employment at any time, subject to payment of the benefits provided under Section 3.01 if
applicable.

     Section 3.03. Definitions. For purposes of this Agreement, the following terms shall have
the following meanings: 

     (a) “Cause” means the occurrence of any one or more of the following: 

     (i) the failure, refusal or willful neglect of Executive to perform the services
required of Executive hereunder; 

     (ii) the Company forming a good faith belief that Executive has engaged in fraudulent
conduct in connection with the business of the Company or that Executive has committed a felony; 

     (iii) Executive’s breach of any of the covenants contained in Section 4.01 or of
the Confidentiality Agreement (as defined below); or 

     (iv) the Company forming a good faith belief that Executive has committed an act of
misconduct, violated the Company’s anti-discrimination policies prohibiting discrimination or harassment on the grounds of race, sex, age or any other legally prohibited basis, or otherwise has caused material harm to the Company’s
reputation or goodwill. 

     (b) “Change of Control” means the occurrence of any one or more of the following: 

     (i) the consummation of a merger or consolidation of the Company with or into any other
entity (other than with any entity or group in which Executive has not less than a 5% beneficial interest) pursuant to which the holders of outstanding equity of the Company immediately prior to such merger or consolidation hold directly or
indirectly 50% or less of the voting power of the equity securities of the surviving entity; 

     (ii) the sale or other disposition of all or substantially all of the Company’s
assets (other than to any entity or group in which Executive has not less than a 5% beneficial interest); or 

     (iii) any acquisition by any person or persons (other than the direct and indirect
holders of outstanding equity of the Company 

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immediately after the Effective Date and other than any entity or group in which Executive has not less than a 5% beneficial interest) of the beneficial ownership of more than 50% of the voting power of the
Company’s equity securities in a single transaction or series of related transactions; provided, however, that an underwritten public offering of the Company’s securities shall not be considered a Change in Control; 

provided, however, that a transaction shall not constitute a Change in
Control if its sole purpose is to change the state of the Company’s incorporation or to create a holding company that will be owned in substantially the same proportions by the persons who directly or indirectly held the Company’s
securities immediately before such transaction. 

     (c) “Good Reason” means the occurrence of any of the following without Executive’s written consent: 

     (i) A significant reduction in the duties, position and responsibilities held by the
Executive immediately prior to the Change of Control; 

     (ii) A material reduction by the Company of Executive’s base salary (other than in
connection with an action affecting a majority of the executive officers of the Company); or 

     (iii) Any relocation of Executive’s office to a location more than 60 miles from
its location immediately prior to the Change of Control; 

provided, however, that no act or failure to act by the Company shall
give rise to Good Reason unless (A) Executive notifies the Company in writing of the circumstances he believes constitute Good Reason hereunder within 30 days after he acquires knowledge of such circumstances and (B) the Company has failed to cure
or remedy such circumstances within 30 days of written notice by Executive to the Company. 

ARTICLE 4 

COVENANTS AND REPRESENTATIONS

     Section 4.01. Nondisparagement, Nonsolicitation And Nondisclosure. (a) In connection with
the termination of Executive’s employment hereunder, Executive shall cooperate with the Company and any subsidiary or affiliate of the Company to ensure an orderly transition, in such a manner and at such times as the Company shall reasonably
request. 

     (b) Executive agrees he will be bound by the non-solicitation covenants in Section 1(b) of the Agreement to Preserve Corporate Opportunity. 

5 

     (c) Except as required by law, neither party will at any time (whether during or after termination of Executive’s employment with the Company) knowingly make any statement,
written or oral, or take any other action that would disparage or otherwise harm the other party, its business or reputation or, in the case of the Company, the reputation of any of its affiliates or the officers and directors of any of them.

     (d) Executive agrees to execute the Company’s standard form of Confidentiality and Non-Disclosure Agreement (the “Confidentiality Agreement”) and to comply with the obligations thereunder during and after the Employment Term. 

     Section 4.02. Material Inducement; Specific Performance. (a) If any provision of Section
4.01 is determined by a court of competent jurisdiction not to be enforceable in the manner set forth in this Agreement, the Company and Executive agree that it is the intention of the parties that such provision should be enforceable to the maximum
extent possible under applicable law and that such court shall reform such provision to make it enforceable in accordance with the intent of the parties.

     (b) Executive acknowledges that a material part of the inducement for the Company to provide the compensation provided herein is Executive’s covenants set forth in Section 4.01
and that the covenants and obligations of Executive with respect to nondisclosure and nonsolicitation relate to special, unique and extraordinary matters and that a violation of any of the terms of such covenants and obligations will cause the
Company irreparable injury for which adequate remedies are not available at law. Therefore, Executive agrees that, if Executive shall materially breach any of those covenants during or following termination of employment, the Company shall be
entitled to an injunction, restraining order or such other equitable relief (without the requirement to post a bond) restraining Executive from committing any violation of the covenants and obligations contained in Section 4.01 and the Company shall
have no further obligation to pay Executive any benefits otherwise payable hereunder. The remedies in the preceding sentence are cumulative and are in addition to any other rights and remedies the Company may have at law or in equity as an
arbitrator (or court) shall reasonably determine. 

     Section 4.03. Executive Representation. Executive expressly represents and warrants to the
Company that Executive is not a party to any contract or agreement and is not otherwise obligated in any way, and is not subject to any rules or regulations, whether governmentally imposed or otherwise, which will or may restrict in any way
Executive’s ability to fully perform Executive’s duties and responsibilities under this Agreement. 

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ARTICLE 5 

SUCCESSORS AND ASSIGNMENTS

     Section 5.01. Assignments. Except for an assignment in the event of a change in control or
an assignment to an affiliate of the Company, this Agreement shall not be assignable by the Company without the written consent of Executive. This Agreement shall not be assignable by Executive. 

     Section 5.02. Successors; Binding Agreement. This Agreement shall inure to the benefit of
and be binding upon personal or legal representatives, executors, administrators, successors, heirs, distributees, devisees, and legatees. 

ARTICLE 6 

MISCELLANEOUS

     Section 6.01. Notices. Any notice required to be delivered hereunder shall be in writing
and shall be addressed: 

	 	
(i)	
      if to the Company, to: 

    Ultra Clean Holdings, Inc.

      150 Independence Drive

      Menlo Park, CA 94025 

      Fax: (650) 326-0929

    Attention: Chief Executive Officer

	 
	 	
(ii)	
if to Executive, to Executive’s last known address as reflected on the books and records of the Company;

or, in each case, to such other address as such party may hereafter specify for the purpose by written notice to the other party hereto. Any such notice shall be deemed received on the date of receipt by the
recipient thereof if received prior to 5:00 p.m. in the place of receipt and such day is a business day in the place of receipt. Otherwise, any such notice shall be deemed not to have been received until the next succeeding business day in the place
of receipt. 

     Section 6.02. Dispute Resolution. (a) Except as provided in Section 4.02, each of
Executive and the Company shall have the right and option to elect (in lieu of litigation) to have any dispute or controversy arising under or in connection with this Agreement settled by arbitration, conducted before a panel of three arbitrators
sitting in Santa Clara County, California, in accordance with the rules of the American Arbitration Association then in effect. Executive’s election to arbitrate, as herein provided, and the decision of the arbitrators in that proceeding, shall
be binding on the Company and Executive. Judgment may be entered on the award of the arbitrator in any court having jurisdiction. 

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     (b) Each party shall pay its own expenses of such arbitration or litigation and all common expenses of such arbitration or litigation shall be borne by the Company. Each party to an
arbitration or litigation hereunder shall be responsible for the payment of its own attorneys’ fees. 

     Section 6.01. Unfunded Agreement. The obligations of the Company under this Agreement
represent an unsecured, unfunded promise to pay benefits to Executive and/or Executive’s beneficiaries, and shall not entitle Executive or such beneficiaries to a preferential claim to any asset of the Company. 

     Section 6.02. Entire Agreement. This Agreement represents the entire agreement between
Executive and the Company, Target and this affiliates with respect to the matters referred to herein, and supersedes all prior discussions, negotiations, and agreements concerning such matters (other than the Confidentiality Agreement). 

     Section 6.03. Tax Withholding. Notwithstanding anything in this Agreement to the contrary,
the Company shall be entitled to withhold from any amounts payable under this Agreement all federal, state, city, or other taxes as are legally required to be withheld. 

     Section 6.04. Waiver Of Rights. The waiver by either party of a breach of any provision of
this Agreement shall not operate or be construed as a continuing waiver or as a consent to or waiver of any subsequent breach hereof. 

     Section 6.05. Amendment. This Agreement may not be modified, altered or changed except
upon the express written consent of both parties. 

     Section 6.06. Severability. In the event any provision of this Agreement shall be held
illegal or invalid for any reason, the illegality or invalidity shall not affect the remaining parts of this Agreement, and this Agreement shall be construed and enforced as if the illegal or invalid provision had not been included.

     Section 6.07. Governing Law. This Agreement shall be governed by and construed in
accordance with the laws of the State of California without reference to principles of conflict of laws. 

     Section 6.08. Counterparts. This Agreement may be signed in several counterparts, each of
which shall be an original, with the same effect as if the signatures thereto and hereto were on the same instrument. 

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     IN WITNESS WHEREOF, the Company and Executive have executed this Agreement, to be effective as of the day and year first written above. 

	 	
      ULTRA CLEAN HOLDINGS, INC.	
	 	 	 	
	 	 	 	
	 	By:  	
	
	 	 	

	 	 	Name:	
	 	 	Title:	
	 	 	 	
	 	 	 	
	 	 	 	
	 	 	 	
	 	
      EXECUTIVE:	
	 	 	 
	 	 	 
	 	 	 
	 	
      
	
	 	
      Leonard Mezhvinsky

9Exhibit 10.8

AMENDED AND RESTATED STOCKHOLDERS’ AGREEMENT

  dated as of

      June 29, 2006

  among

  ULTRA CLEAN HOLDINGS, INC.,

      FP-ULTRA CLEAN, L.L.C.,

     LEONID AND INNA MEZHVINSKY
AS TRUSTEES OF THE

REVOCABLE TRUST AGREEMENT OF LEONID MEZHVINSKY AND

INNA MEZHVINSKY DATED APRIL 26, 1988,

JOE AND JENNY CHEN AS TRUSTEES OF THE JOE CHEN AND

JENNY
CHEN REVOCABLE TRUST DATED 2002,

VICTOR MEZHVINSKY,

     VICTOR MEZHVINSKY AS TRUSTEE
OF THE JOSHUA

MEZHVINSKY 2002 IRREVOCABLE TRUST UNDER AGREEMENT

DATED JUNE 4, 2004,

DAVID HONGYU WU AND WINNIE WEI ZHEN WU AS TRUSTEES OF

THE
CHEN MINORS IRREVOCABLE TRUST,

and

FRANK MOREMAN

TABLE OF CONTENTS

PAGE

	 	 	 ARTICLE 1

  DEFINITIONS	 	 
	 	 	 	 	 
	Section 1.01.	 	 Definitions
		 
		
2
	
	 	 	 	 	 
	 	 	 ARTICLE 2

  CORPORATE GOVERNANCE	 	 

	 	 	 	 	 
	
Section 2.01.
		 
		
Composition of the Board	 
		
5
	
	
Section 2.02.
		 
		
Removal
		 
		
7
	
	
Section 2.03.
		 
		
Vacancies
		 
		
7
	
	
Section 2.04.
		 
		
Action by the Board
		 
		
7
	
	
Section 2.05.
		 
		
Conflicting Charter or Bylaw Provisions
		 
		
8
	
	
Section 2.06.
		 
		
Subsidiary Governance
		 
		
8
	
	 	 	 	 	 
	 	 	 ARTICLE 3

  RESTRICTIONS ON TRANSFER	 	 
	 	 	 	 	 

	
Section 3.01.
		 
		
General
		 
		
9
	
	
Section 3.02.
		 
		
Legends
		 
		
9
	
	
Section 3.03.
		 
		
Co-Sale Rights
		 
		
9
	
	
Section 3.04.
		 
		
Drag-Along Rights
		 
		
10
	
	 	 	 	 	 
	 	 	 ARTICLE 4

  CERTAIN COVENANTS
  AND AGREEMENTS	 	 

	 	 	 	 	 
	
Section 4.01.
		 
		
Information
		 
		
11
	
	
Section 4.02.
		 
		
Reports
		 
		
12
	
	
Section 4.03.
		 
		
Appointment of Stockholder Representative
		 
		
12
	
	 	 	 	 	 
	 	 	 ARTICLE 5

  MISCELLANEOUS	 	 

	 	 	 	 	 
	
Section 5.01.
		 
		
Entire Agreement
		 
		
13
	
	
Section 5.02.
		 
		
Binding Effect; Benefit
		 
		
13
	
	
Section 5.03.
		 
		
Assignability
		 
		
13
	
	
Section 5.04.
		 
		
Waiver; Amendment; Termination
		 
		
13
	
	
Section 5.05.
		 
		
Notices
		 
		
14
	
	
Section 5.06.
		 
		
Fees and Expenses
		 
		
15
	
	
Section 5.07.
		 
		
Headings
		 
		
15
	
	
Section 5.08.
		 
		
Counterparts
		 
		
15
	
	
Section 5.09.
		 
		
Applicable Law
		 
		
15
	
	
Section 5.10.
		 
		
Waiver of Jury Trial
		 
		
15
	

i

	
Section 5.11.
		 
		
Specific Enforcement
		 
		
16
	
	
Section 5.12.
		 
		
Consent to Jurisdiction
		 
		
16
	
	
Section 5.13.
		 
		
Severability
		 
		
16
	
	
Section 5.14.
		 
		
Recapitalization
		 
		
16
	
	
Section 5.15.
		 
		
No Inconsistent Agreements
		 
		
17
	

ii

AMENDED AND RESTATED STOCKHOLDERS’ AGREEMENT

     AGREEMENT dated as of June 29, 2006 (the “Agreement”) among Ultra Clean Holdings, Inc., a Delaware corporation (the
“Company”), FP-Ultra Clean, L.L.C., a Delaware limited liability company (“FP”) and Leonid and Inna Mezhvinsky
as trustees of the Revocable Trust Agreement of Leonid Mezhvinsky and Inna Mezhvinsky dated April 26, 1988 (the “Mehzvinsky Living Trust”), Joe and Jenny Chen as trustees of the
Joe Chen and Jenny Chen Revocable Trust dated 2002, Victor Mezhvinsky, Victor Mezhvinsky as trustee of the Joshua Mezhvinsky 2002 Irrevocable Trust under Agreement dated June 4, 2004 (the “Joshua
Trust”), David Hongyu Wu and Winnie Wei Zhen Wu as trustees of the Chen Minors Irrevocable Trust and Frank Moreman (collectively, the “Sieger Stockholders”), and such additional persons as may sign joinder agreements to this Agreement. 

W I T N E S S E T H :

     WHEREAS, FP is currently the owner of more than 20% of the Common Stock of the Company; 

     WHEREAS, the Company has entered into an Agreement and Plan of Merger and Reorganization dated as of June 29, 2006 among Sieger Engineering, Inc., Leonid Mezhvinsky, the Company, Bob Acquisition Inc.,
Pete Acquisition LLC, the Sieger Stockholders and Leonid Mezhvinsky as Sellers’ Agent (the “Merger Agreement”) pursuant to which the Sieger Stockholders will receive shares of
Common Stock of the Company; 

     WHEREAS, the Company, FP and the Sieger Stockholders are entering into an Amended and Restated Registration Rights Agreement dated as of the date hereof (the “Amended
and Restated Registration Right Agreement”) and the Company, Leonid Mehzvinsky and the Sieger Stockholders are entering into a Lockup Agreement dated as of the date hereof (the “Lockup Agreement”); 

     WHEREAS, the parties hereto desire to enter into this Agreement to govern certain of their rights, duties and obligations; 

     WHEREAS, the parties intend this Agreement to amend, supersede and restate in its entirety the Stockholders’ Agreement dated as of March 24, 2004 among the Company, FP and certain other persons
named therein (the “Original Stockholders’ Agreement”);

     NOW, THEREFORE, in consideration of the covenants and agreements contained herein, the parties hereto agree that the Original Stockholders’ Agreement shall be amended and restated as follows:

  

  ARTICLE 1

    DEFINITIONS

     Section 1.01. Definitions. (a) The following terms, as used herein, have the following meanings: 

     “Affiliate” means, with respect to any Person, any other Person directly or indirectly controlling, controlled by or under common
control with such Person, provided that no securityholder of the Company shall be deemed an Affiliate of any other securityholder solely by reason of any investment in the Company. For the
purpose of this definition, the term “control” (including with correlative meanings, the terms “controlling,”
“controlled by” and “under common control with”), as used with respect to any Person, shall mean the
possession, directly or indirectly, of the power to direct or cause the direction of the management and policies of such Person, whether through the ownership of voting securities, by contract or otherwise. 

     “Aggregate Ownership” means, with respect to any Stockholder or group of Stockholders, and with respect to any class of Company
Securities, the total amount of such class of Company Securities “beneficially owned” (as such term is defined in Rule 13d-3 of the Exchange Act) (without duplication) by such
Stockholder or group of Stockholders as of the date of such calculation, calculated on a Fully Diluted basis. 

     “Aggregate Ownership Percentage” means, with respect to any Stockholder (or group of Stockholders), and with respect to any class
of Company Securities, the percentage equal to such Stockholder’s (or group of Stockholders’) Aggregate Ownership of such class of Company Securities divided by all outstanding Common Shares, calculated on a Fully Diluted basis.

     “Board” means the board of directors of the Company. 

     “Business Day” means any day except a Saturday, Sunday or other day on which commercial banks in San Francisco or New York City are
authorized by law to close. 

     “Bylaws” means
the bylaws of the Company, as amended from time to time.

     “Charter” means the certificate of incorporation of the Company, as the same may be amended from time to time. 

     “Code” means the Internal Revenue Code of 1986, as amended from time to time. 

2

     “Common Stock” means the Common Stock, par value $0.001 per share, of the Company. “Common
Shares” means shares of Common Stock. 

     “Company Securities” means (i) the Common Stock, (ii) securities convertible into or exchangeable for Common Stock and (iii)
options, warrants or other rights to acquire Common Stock or any other equity or equity-linked security issued by the Company. 

     “Drag-Along Proportion” means the number of Common Shares that represents the percentage of all Common Shares held by FP to be sold pursuant to Section
3.04.

     “Drag-Along Shares” means the number of Common Shares of any Sieger Stockholder that represents the percentage of all Common Shares held by such Sieger
Stockholder equal to the Drag-Along Proportion. 

     “Exchange Act” means the Securities Exchange Act of 1934, as amended.

     “Five Percent Stockholder” means a Stockholder whose Aggregate Ownership Percentage is 5% or more. 

     “Foreign Subsidiary” means, with respect to the Company, any entity organized under the laws of a jurisdiction other than a State
of the United States of America of which securities or other ownership interests having ordinary voting power to elect a majority of the board of directors or other persons performing similar functions are at the time directly or indirectly owned by
the Company. 

     “Fully Diluted” means, with respect to any class of Company Securities, all outstanding shares and all shares issuable in respect
of securities convertible into or exchangeable for such shares, all stock appreciation rights, options, warrants and other rights to purchase or subscribe for such Company Securities or securities convertible into or exchangeable for such Company
Securities; provided that if any of the foregoing stock appreciation rights, options, warrants or other rights to purchase or subscribe for such Company Securities are subject to vesting,
the Company Securities subject to vesting shall be included in the definition of “Fully Diluted” only upon and to the extent of such vesting. 

     “Insignificant Subsidiary” means a subsidiary of the Company that does not meet any of the conditions contained in the definition
of “significant subsidiary” as defined in Rule 1-02(w) of Regulation S-X promulgated by the SEC. 

     “Investment” means, with respect to any Person, (i) any direct or indirect purchase or other acquisition by such Person of any
notes, obligations, 

3

instruments, stock, securities or ownership interest (including any partnership, limited liability and joint venture interest) of any other Person and (ii) any capital contribution by such Person to any other Person. 

     “Mehzvinsky Party” means each of Leonid and Inna Mezhvinsky as trustees of the Mezhvinsky Living Trust, Victor Mezhvinsky, and
Victor Mezhvinsky as trustee of the Joshua Trust. 

     “Permitted Transferee” means (i) with respect to FP, any Person so designated by FP in its sole discretion, (ii) with respect to a
Mehvinsky Party, any other Mezhvinsky Party, and (iii) with respect to any Sieger Stockholder, as applicable, such Sieger Stockholder’s Affiliates, spouse, ex-spouse, domestic partner, lineal descendant or antecedent, brother or sister, the
adopted child or adopted grandchild, or the spouse or domestic partner of any child, adopted child, grandchild or adopted grandchild of such Sieger Stockholder, or a trust or trusts for the benefit of such Sieger Stockholder or those members of such
Sieger Stockholder’s family specified in this clause (iii). 

     “Person” means an individual, corporation, limited liability company, partnership, association, trust or other entity or
organization, including a government or political subdivision or an agency or instrumentality thereof. 

     “Pro Rata Share” means with respect to any Stockholder, the quotient obtained by dividing (i) the number of Common Shares held by
such Stockholder by (ii) the aggregate number of all Common Shares held by the Stockholders. 

     “SEC” means the Securities and Exchange Commission. 

     “Securities Act” means the Securities Act of 1933, as amended. 

     “Stockholder” means at any time, any Person (other than the Company) who shall then be a party to or bound by this Agreement, so
long as such Person shall “beneficially own” (as such term is defined in Rule 13d-3 of the Exchange Act) any Company Securities. 

     “Subsidiary” means, with respect to any Person, any entity of which securities or other ownership interests having ordinary voting
power to elect a majority of the board of directors or other persons performing similar functions are at the time directly or indirectly owned by such Person. 

     “Third Party” means a prospective purchaser(s) (other than a Permitted Transferee or other Affiliate of such Stockholder) of
Company Securities in an arm’s-length transaction from a Stockholder. 

     “Transfer” means, with respect to any Company Security, (i) when used as a verb, to sell, assign, dispose of, exchange, pledge,
encumber, hypothecate or 

4

otherwise transfer such security or any participation or interest therein, whether directly or indirectly, or agree or commit to do any of the foregoing and (ii) when used as a noun, a direct or indirect sale, assignment,
disposition, exchange, pledge, encumbrance, hypothecation or other transfer of such security or any participation or interest therein or any agreement or commitment to do any of the foregoing. 

     (b) The term “FP,” to the extent FP shall have transferred any of its
Company Securities, shall mean FP and such transferee or transferees, taken together. 

     (c) Each of the following terms is defined in the Section set forth opposite such term: 

	
Term
		
Section
	
	
Additional Directors
		
2.01
	
	
Agreement
		
Preamble
	
	
Cause
		
2.02
	
	
Company
		
Preamble
	
	
Drag-Along Notice
		
Section 3.04(a)
	
	
FP
		
Preamble
	
	
FP Directors
		
Section 2.01(a)
	
	
FP Stockholder Representative
		
4.03
	
	
Replacement Nominee
		
2.03(a)
	
	
Sale Notice
		
Section 3.03(a)
	
	
Stockholder
		
5.03
	

    ARTICLE 2

    CORPORATE GOVERNANCE

     Section 2.01. Composition of the Board. (a) The Board shall consist of up to nine directors, nominated as follows: (i) up to three directors
will be nominated by FP (the “FP Directors”); (ii) one director nominee will be the Chief Executive Officer of the Company for so long as he or she is employed by the Company;
(iii) one director nominee will be Leonid Mezhvinsky (immediately following the appointment of an additional independent director to the Board) so long as (A) he is employed by the Company, (B) the Sieger Stockholders collectively hold more than
247,191 shares of Common Stock (C) FP holds more than 416,740 shares of Common Stock; and (iv) up to four directors will be nominated by the Chief Executive Officer and FP together, provided that each such director nominated pursuant to this clause (iv) shall (x) not be an “Affiliate” or an “Associate” (as such terms are used within the meaning of Rule 12b-2 under the Exchange Act) of FP and (y) be an
“independent director,” as such term is 

5

defined by the rules of the securities exchange or quotation system on which the Common Stock is traded. If the number of directors that comprise the entire Board is increased in accordance with Section 2.04 hereof, the number of
directors added to the Board (the “Additional Directors”) must be a multiple of two, and FP shall continue to be entitled to nominate the FP Directors as provided in this Section
2.01.

     (b) Each Stockholder entitled to vote for the election of directors to the Board agrees that it will vote its Common Shares or execute a proxy
or written consent, as the case may be, and take all other necessary action (including causing the Company to call a special meeting of stockholders) in order to ensure that the composition of the Board is as set forth in this Section 2.01.
Notwithstanding anything to the contrary in this Agreement, the Sieger Stockholders shall be obligated to give effect to the rights to nominate directors set forth in Section 2.01(a)(i) only so long as the Sieger Stockholders hold more than 247,910
shares of Common Stock.

     (c) The right of FP to nominate the FP Directors pursuant to this Article 2 shall: 

        (i) so long as FP’s Aggregate Ownership Percentage is less than 25%, be limited to the right to nominate one-fourth of the members of the
    Board, rounded up to the nearest whole number of members of the Board if such fraction is not a whole number;

        (ii) at such time as FP’s Aggregate Ownership Percentage is less than 20%, be reduced to the right to nominate one-fifth of the members of
    the Board, rounded up to the nearest whole number of members of the Board if such fraction is not a whole number; 

        (iii) at such time as FP’s Aggregate Ownership Percentage is less than 10%, be reduced to the right to nominate one-tenth of the members
    of the Board, rounded up to the nearest whole number of members of the Board if such fraction is not a whole number; and 

        (iv) terminate at such time as FP’s Aggregate Ownership Percentage is less than 5%.

     The obligations imposed on the Stockholders to give effect to the rights to nominate directors set forth in this Section 2.01 shall terminate as to any Person when such Person’s right to nominate
a director is terminated. 

     (d) The Company agrees to take all other reasonable actions (including calling a special meeting of the Board and/or stockholders) to effect
the composition of the Board as set forth in this Section 2.01. 

6

     Section 2.02. Removal. Each Stockholder agrees that if at any time it is then entitled to vote for the removal of directors from the Board,
it will not vote any of its Common Shares in favor of the removal of any director who shall have been nominated in accordance with Section 2.01 hereof, unless such removal shall be for Cause or the Person or Persons entitled to nominate such
director shall have consented to such removal in writing; provided that if the Person or Persons entitled to nominate any director pursuant to Section 2.01 hereof shall request in writing
the removal, with or without Cause, of such director, such Stockholder shall vote its Common Shares in favor of such removal. Removal for “Cause” shall mean removal of a director
because of such director’s (a) willful and continued failure substantially to perform his or her statutory or fiduciary duties to the Company in his or her established position, (b) participation in a fraud, act of dishonesty or other
misconduct that is injurious, monetarily or otherwise, to the Company or any of its Subsidiaries, (c) having been charged with or pleading guilty to a felony or a crime involving fraud or dishonesty, (d) violation of any state or federal law that
has an adverse effect on the Company or (e) abuse of illegal drugs or other controlled substances or habitual intoxication. 

     Section 2.03. Vacancies. If, as a result of death, disability, retirement, resignation, removal (with or without Cause) or otherwise, there
shall exist or occur any vacancy on the Board: 

     (a) the Person or Persons entitled under Section 2.01 hereof to nominate such director whose death, disability, retirement, resignation or
removal resulted in such vacancy may, subject to the provisions of Section 2.01 hereof, nominate another individual (the “Replacement Nominee”) to fill such vacancy and serve as a
director on the Board; and 

     (b) subject to Section 2.01 hereof, each Stockholder then entitled to vote for the election of the Replacement Nominee as a director of the
Company agrees that it will vote its Common Shares, or execute a proxy or written consent, as the case may be, in order to ensure that the Replacement Nominee be elected to the Board. 

     Section 2.04. Action by the Board. (a) A quorum of the Board shall consist of a majority of the total number of directors. 

     (b) All actions of the Board shall require (i) the affirmative vote of at least a majority of the directors present at a duly convened meeting
of the Board at which a quorum is present or (ii) the unanimous written consent of the Board; provided that if there is a vacancy on the Board and an individual has been nominated to fill
such vacancy, the first order of business shall be to fill such vacancy. 

7

     (c) The Board may create executive, compensation, audit, nominating and corporate governance and such other committees as it may determine.
FP’s entitlement to representation on any committee created by the Board shall: 

        (i) so long as FP’s Aggregate Ownership Percentage is less than 25%, be limited to an entitlement to designate one-fourth of the members
    of each such committee, rounded up to the nearest whole number of members if such fraction is not a whole number;

        (ii) at such time as FP’s Aggregate Ownership Percentage is less than 20%, be reduced to an entitlement to designate one-fifth of the
    members of each such committee, rounded up to the nearest whole number of members if such fraction is not a whole number; 

        (iii) at such time as FP’s Aggregate Ownership Percentage is less than 10%, be reduced to an entitlement to designate one-tenth of the
    members of each such committee, rounded up to the nearest whole number of members if such fraction is not a whole number; and 

        (iv) terminate at such time as FP’s Aggregate Ownership Percentage is less than 5%. 

     Section 2.05. Conflicting Charter or Bylaw Provisions. Each Stockholder shall vote its Common Shares or execute proxies or written consents,
as the case may be, and shall take all other actions necessary to ensure that the Company’s Charter and Bylaws (i) facilitate, and do not at any time conflict with, any provision of this Agreement and (ii) permit each Stockholder to receive the
benefits to which each such Stockholder is entitled under this Agreement. 

     Section 2.06. Subsidiary Governance. The Company and each Stockholder agree that (i) the board of directors or other persons performing
similar functions of each Subsidiary of the Company (other than any Foreign Subsidiary and any Insignificant Subsidiary) shall be comprised of the individuals who are serving as directors on the Board in accordance with Section 2.01 hereof and (ii)
the board of directors or other persons performing similar functions of any Subsidiary of the Company shall be subject to all the provisions of this Article 2. Each Stockholder agrees to vote its Common Shares and to cause its representatives on the
Board, subject to their fiduciary duties, to vote and take other appropriate action to effectuate the agreements in this Section 2.06 in respect of any Subsidiary of the Company. 

8

  

  ARTICLE 3

    RESTRICTIONS ON TRANSFER

     Section 3.01. General. (a) Each Stockholder understands and agrees that the Company Securities acquired as of the date of this Agreement have
not been registered under the Securities Act and are restricted securities under such Act and the rules and regulations promulgated thereunder. Each Stockholder agrees that it will not Transfer any Company Securities (or solicit any offers in
respect of any Transfer of any Company Securities), except in compliance with the Securities Act, any applicable foreign or state securities or “blue sky” laws, and the terms and conditions of this Agreement. 

     (b) Any attempt to Transfer any Company Securities not in compliance with this Agreement shall be null and void and the Company shall not, and
shall cause any transfer agent not to, give any effect in the Company’s stock records to such attempted Transfer. 

     Section 3.02. Legends. (a) In addition to any other legend that may be required, each certificate for Company Securities that is issued to
any Stockholder shall bear a legend in substantially the following form: 

     “THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY FOREIGN OR STATE SECURITIES LAWS AND MAY NOT BE OFFERED OR SOLD EXCEPT IN COMPLIANCE THEREWITH. THIS
SECURITY IS ALSO SUBJECT TO ADDITIONAL RESTRICTIONS ON TRANSFER AS SET FORTH IN THE AMENDED AND RESTATED STOCKHOLDERS’ AGREEMENT DATED AS OF JUNE 29, 2006, COPIES OF WHICH MAY BE OBTAINED UPON REQUEST FROM ULTRA CLEAN HOLDINGS, INC. OR ANY
SUCCESSOR THERETO.” 

     (b) If any Company Securities shall cease to be Registrable Securities (as defined in the Registration Rights Agreement) under clause (i) or
clause (ii) of the definition thereof, the Company, upon the written request of the holder thereof, shall issue to such holder a new certificate evidencing such shares without the first sentence of the legend required by Section 3.02(a) hereof
endorsed thereon. If any Company Securities cease to be subject to any and all restrictions on Transfer set forth in this Agreement, the Company, upon the written request of the holder thereof, shall issue to such holder a new certificate evidencing
such Company Securities without the second sentence of the legend required by Section 3.02(a) hereof endorsed thereon. 

     Section 3.03. Co-Sale Rights. (a) In the event (i) FP receives a bona fide offer
from any person to purchase any of FP’s Company Securities and (ii) FP determines to sell any of its Company Securities, FP shall first give the Sieger 

9

Stockholders notice of its intention to sell such shares, describing the number of shares proposed to be sold, the identity of the proposed purchaser, and the price and terms upon which FP proposes to make such sale (the
“Sale Notice”). 

     (b) Within
10 days after delivery of the Sale Notice, a Sieger Stockholder
may elect to sell up to such Sieger Stockholder’s Pro Rata Share of the
shares to be purchased by the purchaser described in the Sale Notice by giving
written notice thereof to FP and tendering to the Secretary of  the Company a
certificate representing the shares to be sold, properly endorsed for transfer,
with written instructions to transfer the shares to the purchaser described in
the Sale Notice upon receipt of payment for such shares from such purchaser
for the benefit of such Sieger Stockholder. FP shall thereupon notify the purchaser
of the co-sale arrangements hereunder, and instruct the purchaser to deliver
payment for the shares to be purchased by such purchaser to the Secretary of
the  Company, who shall transmit such payment to such Sieger Stockholders in
payment for the shares sold by each. 

     (c) To the extent any of the Sieger Stockholders decline to exercise the co-sale right as allowed by this Section 3.03, FP may, within 30 days
after the date on which the Sieger Stockholders’ co-sale rights lapsed, sell some or all of FP’s Company Securities which were the subject of the Sale Notice at the price and on the terms specified in the Sale Notice. After the expiration
of said 30 day period, FP shall not sell any of its Company Securities without first complying with the provisions of this Section 3.03. 

     (d) This Section 3.03 shall not apply to any offer or sale of FP’s Company Securities pursuant to the exercise by FP of its rights under
the Amended and Restated Registration Rights Agreement or pursuant to a sale under Rule 144 under the Securities Act. 

     Section 3.04. Drag-Along Rights. (a) In the event FP determines to sell any of its
Company Securities at a price equal to or greater than $9.00 per share, FP shall notify the Sieger Stockholders of its intention to transfer such shares, describing the number of shares held by FP to be transferred, the identity of the proposed
transferee, the price and terms upon which FP proposes to make such transfer and the number of Drag-Along Shares to be purchased from each Sieger Stockholder by the transferee (the “Drag-Along Notice”). 

     (b) Within 10 days after delivery of the Drag-Along Notice, each Sieger Stockholder shall tender to the Secretary of the Company a certificate
representing the number of Drag-Along Shares to be sold by such Sieger Stockholder, properly endorsed for transfer, with written instructions to transfer the shares to the transferee described in the Drag-Along Notice upon receipt of payment for
such shares from such transferee for the benefit of such Sieger Stockholder. FP shall thereupon instruct the transferee to deliver payment for the 

10

shares to be purchased by such transferee to the Secretary of the Company, who shall transmit such payment to such Sieger Stockholders in payment for the shares sold by each. 

     (c) This Section 3.04 shall not apply to any offer or sale of FP’s Company Securities pursuant to the exercise by FP of its rights under
the Amended and Restated Registration Rights Agreement or pursuant to a sale under Rule 144 under the Securities Act. 

ARTICLE 4

    CERTAIN COVENANTS AND AGREEMENTS

     Section 4.01.  Information. The Company agrees to furnish FP, for so long as FP owns any Company Securities: 

     (a) as soon as practicable and in any event no later than 20 days after the end of each fiscal month, a management report for such month
covering the items set forth in Exhibit B hereto; 

     (b) as soon as practicable and, in any event, within 45 days after the end of each of the first three fiscal quarters, the unaudited
consolidated balance sheet of the Company and its Subsidiaries as at the end of such quarter and the related unaudited statement of operations and cash flow for such quarter and for the portion of the fiscal year then ended, in each case prepared in
accordance with GAAP; 

     (c) as soon as practicable and, in any event, within 90 days after the end of each fiscal year, (i) the audited consolidated balance sheet of
the Company and its Subsidiaries as at the end of such fiscal year and the related audited statement of operations and cash flow for such fiscal year, and for the portion of the fiscal year then ended, in each case prepared in accordance with GAAP
and certified by Deloitte & Touche or another firm of independent public accountants of nationally recognized standing, together with a comparison of the figures in such financial statements with the figures for the previous fiscal year and the
figures in the Company’s annual operating budget, (ii) any management letters or other correspondence from such accountants and (iii) the Company’s annual operating budget for the coming fiscal year, 

     (d) promptly following the preparation thereof, a copy of any revisions to the annual operating budget delivered pursuant to clause (c) above,

     (e) promptly upon their becoming available, copies of (i) all financial statements, reports, notices and proxy statements sent or made
generally available by the Company to any of its security holders, (ii) all regular and periodic reports 

11

and all registration statements and prospectuses filed by the Company with any securities exchange or with the SEC and (iii) all press releases and other statements made generally available by the Company to the public, 

     (f) as soon as practicable and, in any event, within five Business Days after any officer of the Company obtains knowledge thereof, notice
(with a description in reasonable detail, and stating the action that the Company is taking or proposes to take with respect thereto) of (i) the commencement of any material litigation, investigation or other proceeding to which the Company or any
of its Subsidiaries is a party before any court or arbitrator or any governmental body, agency or official or (ii) the existence of any material default or breach under this Agreement or any other material contract or agreement to which the Company
or any of its Subsidiaries is a party, and 

     (g) as promptly as reasonably practicable, such other information with respect to the Company or any of its Subsidiaries as may reasonably be
requested by FP. 

     The Company’s obligation to provide information pursuant to Section 4.01(a) and (b) shall be deemed satisfied upon the timely filing of such information with the SEC. 

     Section 4.02. Reports. The Company will furnish the Stockholders with the quarterly and annual financial reports that the Company is required
to file with the SEC pursuant to Section 13 or Section 15(d) of the Exchange Act or, in the event the Company is not required to file such reports, quarterly and annual reports containing the same information as would otherwise be required in such
reports. The Company’s obligation to provide information pursuant to this Section 4.02 shall be deemed satisfied upon the timely filing of such information with the SEC. 

     Section 4.03. Appointment of Stockholder Representative. FP and its Permitted Transferees, if any, irrevocably appoint the FP Stockholder
Representative its agent and true and lawful attorney-in-fact, with full power of substitution, to take the actions, receive notices and exercise the powers delegated to the FP Stockholder Representative under this Agreement in the name of each such
Stockholder, together with such actions and powers as are reasonably incidental thereto. Notwithstanding the foregoing, the FP Stockholder Representative shall not take any action or exercise any power to the extent that the holders of the majority of the Fully Diluted Common Shares held by FP and its Permitted Transferees shall have voted to prevent the Stockholder
Representative from taking such action or exercising such power. “FP Stockholder Representative” means FP, as agent for FP and its Permitted Transferees. The entity appointed as
the FP Stockholder Representative may be replaced at any time and from time to time by the vote of a majority of the Fully 

12

Diluted Common Shares held by FP and its Permitted Transferees. FP shall notify the Company of such appointment as promptly as practicable after such appointment. 

ARTICLE 5

    MISCELLANEOUS

     Section 5.01. Entire Agreement. This Agreement, the Registration Rights Agreement, the Lockup Agreement, the Charter and the Bylaws
constitute the entire agreement among the parties hereto and supersede all prior and contemporaneous agreements and understandings, both oral and written, among the parties hereto with respect to the subject matter hereof and thereof. 

     Section 5.02. Binding Effect; Benefit. This Agreement shall inure to the benefit of and be binding upon the parties hereto and their
respective heirs, successors, legal representatives and permitted assigns. Nothing in this Agreement, expressed or implied, is intended to confer on any Person other than the parties hereto, and their respective heirs, successors, legal
representatives and permitted assigns, any rights, remedies, obligations or liabilities under or by reason of this Agreement. 

     Section 5.03. Assignability. Neither this Agreement nor any right, remedy, obligation or liability arising hereunder or by reason hereof
shall be assignable by any party hereto pursuant to any Transfer of Company Securities or otherwise, except that any Permitted Transferee acquiring Company Securities and any Person acquiring Company Securities who is required by the terms of this
Agreement or any employment agreement or stock purchase, option, stock option or other compensation plan of the Company or any Subsidiary to become a party hereto shall (unless already bound hereby) execute and deliver to the Company an agreement to
be bound by this Agreement in the form of Exhibit A hereto and shall thenceforth be a “Stockholder”, provided that any
such Transfer pursuant to this Section 5.03 shall be subject to the terms of the Lockup Agreement. Any Stockholder who ceases to own beneficially any Company Securities shall cease to be bound by the terms hereof (other than Sections 5.09, 5.10,
5.11 and 5.12) . 

     Section 5.04. Waiver; Amendment; Termination. (a) No provision of this Agreement may be waived except by an instrument in writing executed by
the party against whom the waiver is to be effective. No provision of this Agreement may be amended or otherwise modified except by an instrument in writing executed by the Company with approval of the Board and Stockholders (including FP) holding
at least 50% of the outstanding Common Shares held by the parties hereto at the time of such proposed amendment or modification. 

13

     (b) Any amendment or modification of any provision of this Agreement that would adversely affect FP may be effected only with the consent of
FP. 

     Section 5.05. Notices. All notices, requests and other communications to any party shall be in writing (including facsimile transmissions)
and shall be given, 

     if to the Company to:

  
    Ultra Clean Holdings, Inc. 

      150 Independence Drive 

      Menlo Park, CA 94025 

      Attention: Chief Executive Officer

      Fax: (650) 326-0929 

  

     with copies to FP and Davis Polk & Wardwell at the addresses listed below.

     if to the Sieger Stockholders, to:

  
    Sieger Engineering 

      130 Beacon Street 

      South San Francisco, CA 94080

      Attention: Leonid Mezhvinsky 

      Fax: (650) 583-5823 

  

     with a copy to:

  
    Wilson
                    Sonsini Goodrich & Rosati 

      Professional Corporation 

      One Market, Spear Tower, Suite 3300

      San Francisco, CA 94105 

      Attention: Robert T. Ishii 

      Fax: (415) 947-2099 

  

     if to FP, to:

  
    FP-Ultra Clean, LLC 

      c/o Francisco Partners, L.P. 

      2882 Sand Hill Road, Suite 280

      Menlo Park, CA 94025 

      Attention: Dipanjan Deb 

      Fax: (650) 233-2999 

  

14

  

     with a copy to:

  
    Davis Polk & Wardwell 

      1600 El Camino Real 

      Menlo Park, CA 94025 

      Attention: Alan F. Denenberg, Esq.

      Fax: (650) 752-2111 

  

     All notices, requests and other communications shall be deemed received on the date of receipt by the recipient thereof if received prior to 5:00 p.m. in the place of receipt and such day is a
Business Day in the place of receipt. Otherwise, any such notice, request or communication shall be deemed not to have been received until the next succeeding Business Day in the place of receipt. Any notice, request or other written communication
sent by facsimile transmission shall be confirmed by certified mail, return receipt requested, posted within one Business Day, or by personal delivery, whether courier or otherwise, made within two Business Days after the date of such facsimile
transmissions. 

     Any Person who becomes a Stockholder shall provide its address and fax number to the Company, which shall promptly provide such information to each other Stockholder. 

     Section 5.06. Fees and Expenses. The Company shall pay all out-of-pocket costs and expenses of FP, including the fees and expenses of
counsel, incurred in connection with the preparation of this Agreement, or any amendment or waiver hereof, and the transactions contemplated hereby and all matters related hereto. 

     Section 5.07. Headings. The headings contained in this Agreement are for convenience only and shall not affect the meaning or interpretation
of this Agreement. 

     Section 5.08. Counterparts. This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original and
all of which together shall be deemed to be one and the same instrument. 

     Section 5.09. Applicable Law. This Agreement shall be governed by, and construed in accordance with, the laws of the State of California,
without regard to the conflicts of laws rules of such state. 

     Section 5.10. Waiver of Jury Trial. EACH OF THE PARTIES HERETO HEREBY IRREVOCABLY WAIVES ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL
PROCEEDING ARISING OUT OF OR RELATED TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY. 

15

     Section 5.11. Specific Enforcement. Each party hereto acknowledges that the remedies at law of the other parties for a breach or threatened
breach of this Agreement would be inadequate and, in recognition of this fact, any party to this Agreement, without posting any bond, and in addition to all other remedies that may be available, shall be entitled to obtain equitable relief in the
form of specific performance, a temporary restraining order, a temporary or permanent injunction or any other equitable remedy that may then be available. 

     Section 5.12. Consent to Jurisdiction. The parties hereby agree that any suit, action or proceeding seeking to enforce any provision of, or
based on any matter arising out of or in connection with, this Agreement or the transactions contemplated hereby shall be brought in the United States District Court for the District of Delaware or any Delaware State court sitting in Delaware, so
long as one of such courts shall have subject matter jurisdiction over such suit, action or proceeding, and that any cause of action arising out of this Agreement shall be deemed to have arisen from a transaction of business in the State of
Delaware, and each of the parties hereby irrevocably consents to the nonexclusive jurisdiction of such courts (and of the appropriate appellate courts therefrom) in any such suit, action or proceeding and irrevocably waives, to the fullest extent
permitted by law, any objection that it may now or hereafter have to the laying of the venue of any such suit, action or proceeding in any such court or that any such suit, action or proceeding which is brought in any such court has been brought in
an inconvenient form. Process in any such suit, action or proceeding may be served on any party anywhere in the world, whether within or without the jurisdiction of any such court. Without limiting the foregoing, each party agrees that service of
process on such party as provided in Section 5.05 shall be deemed effective service of process on such party. 

     Section 5.13.
Severability. If one or more provisions
of this Agreement are held to be unenforceable to any extent under applicable
law or  would result in a breach or violation of the rules or listing requirements
of the securities exchange or quotation system on which the Common Shares are
traded, such provision shall be interpreted as if it were written so as to be
enforceable or in  compliance with the rules or listing requirements, as applicable,
to the maximum possible extent so as to effectuate the parties’ intent to
the maximum possible extent, and the balance of the Agreement shall be interpreted
as if such provision  were so excluded or interpreted and shall be enforceable
in accordance with its terms to the maximum extent permitted by law. Notwithstanding
anything to the contrary contained herein, the Nominating and Corporate Governance
Committee of the Board shall  have the powers and duties set forth in its charter
and all nominations made pursuant hereto shall be subject thereto. 

     Section 5.14. Recapitalization. If any capital stock or other securities are issued in respect of, in exchange for, or in substitution of,
any Company Securities by reason of any reorganization, recapitalization, reclassification, 

16

merger, consolidation, spin-off, partial or complete liquidation, stock dividend, split-up, sale of assets, distribution to stockholders or combination of the Company Securities or any other change in capital structure of the
Company, appropriate adjustments shall be made with respect to the relevant provisions of this Agreement so as fairly and equitably to preserve, as far as practicable, the original rights and obligations of the parties hereto under this Agreement.

     Section 5.15. No Inconsistent Agreements. The Company will not hereafter enter into any agreement with respect to its securities that is
inconsistent with, or grants rights superior to the rights granted to the Stockholders pursuant to, this Agreement. The Company represents and warrants to each Stockholder that it has not previously entered into any agreement with respect to any of
its securities granting any registration rights to any Person other than the Amended and Restated Registration Rights Agreement. 

17

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed by their respective authorized officers as of the day and year first above written.

	
    ULTRA CLEAN HOLDINGS, INC.	
	 	 
	By:	 

	 	

	 	 Name:
	
	 	 Title:
	

	
    FP-ULTRA CLEAN, LLC	
	 	 	 
	 	By:	FRANCISCO PARTNERS, L.P.,
	
	 	 	
Managing Member
	

	
By:
		 
		

	
	
		
		

	
	

		 
		
Name:
	
	

		 
		
Title:
	

 

	LEONID AND INNA MEZHVINSKY
          AS

TRUSTEES OF THE REVOCABLE

TRUST AGREEMENT OF LEONID

MEZHVINSKY AND INNA

MEZHVINSKY DATED APRIL 26, 1988
	 	 
	By:	  
	 	

	 	 Name: 
	 	 Title: 

	JOE AND JENNY CHEN AS TRUSTEES

    OF THE JOE CHEN AND JENNY CHEN

    REVOCABLE TRUST DATED 2002 
	 	 
	By:	  
	 	

	 	 Name: 
	 	 Title: 

	 VICTOR MEZHVINSKY 
	 	 
	By:	  
	 	

	 	 Name: 
	 	 Title: 

	VICTOR MEZHVINSKY AS TRUSTEE

     OF THE JOSHUA MEZHVINSKY 2002

     IRREVOCABLE TRUST UNDER

     AGREEMENT DATED JUNE 4, 2004 
	 	 
	By:	  
	 	

	 	 Name: 
	 	 Title: 

	 DAVID HONGYU WU AND WINNIE
          WEI

    ZHEN WU AS TRUSTEES OF THE CHEN

    MINORS IRREVOCABLE TRUST
	 	 
	By:	  
	 	

	 	 Name: 
	 	 Title: 

	 FRANK MOREMAN
	 	 
	By:	  
	 	

	 	 Name: 
	 	 Title: 

  

  EXHIBIT A

JOINDER TO STOCKHOLDERS’ AGREEMENT

       This Joinder
  Agreement (this “Joinder Agreement”) is made as of the date
  written below by the undersigned (the “Joining Party”) in accordance with the Stockholders’ Agreement
  dated as of June 29, 2006 (the “Stockholders’ Agreement”)
  among Ultra Clean Holdings, Inc., FP-Ultra Clean, L.L.C., Leonid and Inna Mezhvinsky
  as trustees of the Revocable Trust Agreement of Leonid Mezhvinsky and Inna
  Mezhvinsky dated April 26, 1988, Joe and Jenny Chen as trustees of the Joe
  Chen and Jenny Chen Revocable Trust dated 2002, Victor Mezhvinsky, Victor Mezhvinsky as
  trustee of the Joshua Mezhvinsky 2002 Irrevocable Trust under Agreement dated
  June 4, 2004, David Hongyu Wu and Winnie Wei Zhen Wu as trustees of the Chen
  Minors Irrevocable Trust, Frank Moreman and certain other persons as the same
  may be amended from time to time. Capitalized terms used, but not defined,
herein shall have the meaning ascribed to such terms in the Stockholders’ Agreement. 

     The Joining Party hereby acknowledges, agrees and confirms that, by its execution of this Joinder Agreement, the Joining Party shall be deemed to be a party to the Stockholders’ Agreement as of
the date hereof and shall have all of the rights and obligations of a “Stockholder” thereunder as if it had executed the Stockholders’ Agreement. The Joining Party hereby ratifies, as of the date hereof, and agrees to be bound by, all
of the terms, provisions and conditions contained in the Stockholders’ Agreement. 

     The Joining Party’s Aggregate
Ownership is__________ Common Shares as of the date written below. 

     IN WITNESS WHEREOF, the undersigned has executed this Joinder Agreement as of the date written below. 

Date:___________ ___, 20___

 

	 	
    [NAME OF JOINING PARTY]	
	 	 	 
	 	By:	 

	 	 	

	 	 	 Name:
	
	 	 	 Title:
	
	 	 	 
	 	 	
Address for Notices:
	

  

  EXHIBIT B

MATTERS TO BE INCLUDED IN THE COMPANY’S

MONTHLY
MANAGEMENT REPORT 

	
1.	
      The unaudited consolidated balance sheet of the Company and itsSubsidiaries
      as at the end of such month and the related unaudited statement of operations
      and cash flow for such month, and for the portion of the fiscal year then
      ended, in each case prepared in accordance with GAAP, setting forth in
      comparative form the figures for the corresponding month and portion of
      the previous fiscal year, and the figures for the corresponding month and
portion of the then current fiscal year as in the Company’s annual operating
budget. 
	 	 
	
2.	
Projected monthly income statements prepared on the same basis as those specified in Item 1, including revenue forecasts by customer and expense budget by major expense category, for periods extending through a minimum of one year
from the date of the report.	
	 	 
	
3.	
A summary of realized and projected sales bookings for the most recent month and for periods extending through a minimum of one year from the date of the report, including probability-weighted “pipeline” projections of
new bookings to the extent that the Company compiles such data for internal purposes.

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00106-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00106-of-00352.parquet"}]]