Document:

EX-10.24

 Exhibit 10.24 
 AMENDMENT TO APPENDIX A 
 Supplemental Retirement Benefits

 This Amendment to Appendix A of the Amended Employment Agreement (this “Amendment”) is entered into as of
December 21, 2012, by and between MKS Instruments, Inc. (the “Corporation”), and Leo Berlinghieri (the “Employee”). 
 WHEREAS, the Corporation and the Employee previously entered into an Appendix A to Employee’s Amended Employment Agreement, dated November 10, 2008 (the “Agreement”), which
Agreement may be amended by a written instrument executed by both parties; and 
 WHEREAS, the Corporation and the
Employee desire to amend the Agreement to comply with Internal Revenue Service Notice 2010-80, as set forth below. 
 NOW,
THEREFORE, in consideration of the promises and mutual covenants contained herein, and intending to be legally bound hereby, the parties agree to amend Section 4.5 of the Agreement to provide as follows: 

 

	 	“4.5	Release.    Benefits payable under this Appendix A (other than death benefits payable under Section 6) are specifically conditioned upon
and provided in exchange for Employee signing a separation agreement that releases the Corporation from any liabilities that may have arisen as a result of Employee’s employment and/or termination of employment with the Corporation. The time
period for returning such separation agreement shall be designated by the Corporation and shall not be less than 21 days nor more than 45 days following Employee’s Separation from Service. If such time period (including any period for
revocation) begins in one taxable year and ends in a subsequent taxable year, any payments conditioned upon such separation agreement shall be made in the later taxable year. Payments of benefits hereunder shall not be made unless and until the
separation agreement has been signed and timely returned by Employee and the specified period for revocation of the separation agreement has expired without revocation. In the event Employee terminates employment with the Corporation for any reason
other than death (including Retirement) without satisfying the requirements of this Section 4.5 all benefits shall be forfeited, and no amount shall be payable under this Appendix A.” 

IN WITNESS WHEREOF, the parties have executed this Amendment as of the date and year first above written. 

 

	
	MKS INSTRUMENTS, INC.
	
	/s/ Seth H. Bagshaw
	
	 
	
	EMPLOYEE
	
	/s/ Leo BerlinghieriEX-10.25

 Exhibit 10.25 
 AMENDMENT TO APPENDIX A 
 Supplemental Retirement Benefits

 This Amendment to Appendix A of the Amended Employment Agreement (this “Amendment”) is entered into as of
December 21, 2012, by and between MKS Instruments, Inc. (the “Corporation”), and Gerald Colella (the “Employee”). 
 WHEREAS, the Corporation and the Employee previously entered into an Appendix A to Employee’s Amended Employment Agreement, dated November 10, 2008 (the “Agreement”), which
Agreement may be amended by a written instrument executed by both parties; and 
 WHEREAS, the Corporation and the
Employee desire to amend the Agreement to comply with Internal Revenue Service Notice 2010-80, as set forth below. 
 NOW,
THEREFORE, in consideration of the promises and mutual covenants contained herein, and intending to be legally bound hereby, the parties agree to amend Section 4.5 of the Agreement to provide as follows: 

 

	 	“4.5	Release.    Benefits payable under this Appendix A (other than death benefits payable under Section 6) are specifically conditioned upon
and provided in exchange for Employee signing a separation agreement that releases the Corporation from any liabilities that may have arisen as a result of Employee’s employment and/or termination of employment with the Corporation. The time
period for returning such separation agreement shall be designated by the Corporation and shall not be less than 21 days nor more than 45 days following Employee’s Separation from Service. If such time period (including any period for
revocation) begins in one taxable year and ends in a subsequent taxable year, any payments conditioned upon such separation agreement shall be made in the later taxable year. Payments of benefits hereunder shall not be made unless and until the
separation agreement has been signed and timely returned by Employee and the specified period for revocation of the separation agreement has expired without revocation. In the event Employee terminates employment with the Corporation for any reason
other than death (including Retirement) without satisfying the requirements of this Section 4.5 all benefits shall be forfeited, and no amount shall be payable under this Appendix A.” 

IN WITNESS WHEREOF, the parties have executed this Amendment as of the date and year first above written. 

 

	
	MKS INSTRUMENTS, INC.
	
	/s/ Leo Berlinghieri
	
	 
	
	EMPLOYEE
	
	/s/ Gerald ColellaEX-10.26

 Exhibit 10.26 
 AMENDMENT TO APPENDIX A 
 Supplemental Retirement Benefits

 This Amendment to Appendix A of the Amended Employment Agreement (this “Amendment”) is entered into as of
December 21, 2012, by and between MKS Instruments, Inc. (the “Corporation”), and John A. Smith (the “Employee”). 
 WHEREAS, the Corporation and the Employee previously entered into an Appendix A to Employee’s Amended Employment Agreement, dated November 10, 2008 (the “Agreement”), which
Agreement may be amended by a written instrument executed by both parties; and 
 WHEREAS, the Corporation and the
Employee desire to amend the Agreement to comply with Internal Revenue Service Notice 2010-80, as set forth below. 
 NOW,
THEREFORE, in consideration of the promises and mutual covenants contained herein, and intending to be legally bound hereby, the parties agree to amend Section 4.7 of the Agreement to provide as follows: 

 

	 	“4.7	Release.    Benefits payable under Section 6.1 of this Appendix A attributable to Employee’s Company Contribution Subaccount are
specifically conditioned upon and provided in exchange for Employee signing a separation agreement that releases the Company from any liabilities that may have arisen as a result of Employee’s employment and/or termination of employment with
the Corporation. The time period for returning such separation agreement shall be designated by the Corporation and shall not be less than 21 days nor more than 45 days following Employee’s Separation from Service. If such time period
(including any period for revocation) begins in one taxable year and ends in a subsequent taxable year, any payments conditioned upon such separation agreement shall be made in the later taxable year. Payments of benefits hereunder shall not be made
unless and until the separation agreement has been signed and timely returned by Employee and the specified period for revocation of the separation agreement has expired without revocation. In the event Employee terminates employment with the
Corporation for any reason other than death (including Retirement) without satisfying the requirements of this Section 4.7 Employee’s Company Contribution Subaccount shall be forfeited, and no amount attributable to such Subaccount shall
be payable under this Appendix A.” 

 IN WITNESS WHEREOF, the parties have executed this Amendment as
of the date and year first above written. 
  

	
	MKS INSTRUMENTS, INC.
	
	/s/ Leo Berlinghieri
	
	 
	
	EMPLOYEE
	
	/s/ John A. SmithEX-10.27

 Exhibit 10.27 
 [FORM OF 2012 MANAGEMENT INCENTIVE BONUS PLAN 
 FOR NAMED EXECUTIVE
OFFICERS] 
 

 
 PERSONAL & CONFIDENTIAL 

MKS MEMORANDUM 
  

 
  

	To:	

	DATE:	APRIL 18, 2012 

	FROM:	

	SUBJECT:	2012 MKS KEY EMPLOYEE/ MANAGEMENT BONUS PLAN 

  

 
 Attached is a copy of your 2012
MKS Bonus Plan (The Plan). This plan exists to provide key managers and employees the opportunity to benefit financially while improving MKS’ overall business performance. You have been included in the plan because you are working in a position
that allows you to exert influence over how well MKS performs. 
 The 2012 Bonus Plan is intended to encourage us to make prudent
choices about how operations are conducted. The growth of MKS is dependent upon our making decisions that constantly focus on achieving customer satisfaction while maintaining sound fiscal control. While one person alone cannot change the direction
of any company, the combined decisions made by the participants in this plan play an important part in influencing MKS’ overall business performance. The measure of our business performance for The Plan will be MKS’ financial results. This
year the financial metric used to calculate performance for bonus achievement will be corporate Adjusted Operating Income. Adjusted Operating Income for The Plan is defined as GAAP Net Operating Income excluding any unanticipated charges or income
not related to the operating performance of MKS. 
 The attached chart shows the payout of your target bonus as a function of
Adjusted Operating Income. Based on our business model and current expectations, we have set a payout goal equal to 100% of your target bonus when our Adjusted Operating Income reaches $121.8 million. As you can see from the attached chart, you will
start earning a payout under this bonus plan when Adjusted Operating Income reaches $85.3 million. Your bonus payout will be 70% of target at Adjusted Operating Income of $85.3 million, and you will receive the maximum bonus payout of 200% of target
at Adjusted Operating Income of $173 million. 
 As you well know it is difficult for us to look long-term into our industry so
your efforts to carefully weigh any expenses are very much appreciated. 
  

	NOTE:	Your target bonus amount is
XX%1 of your 2012 eligible earnings.

 This plan is confidential. Only a select group of individuals are eligible. 

Neither this plan, nor the financial performance targets associated with it, 

should be shared with anyone inside or outside the company. 

 
 1 Target bonus amounts in 2012 for Named Executive Officers were as
follows: Leo Berlinghieri – 100%, Gerald Colella – 75%, Seth Bagshaw – 60%, John Lee – 60%, and John Smith – 50%. 

  
 

 
 PERSONAL & CONFIDENTIAL 

MKS MEMORANDUM 
 2012 Annual Management/Key Employee Bonus Plan 
 Based on Adjusted
Operating Income 
 (January 1 – December 31) 

The payout of your bonus will be achieved according to the schedule 

shown in the chart below. For example, you will receive 80% of 

your target bonus if our Adjusted Operating Income reaches $97.4 million 

and 100% of your target bonus if Adjusted Operating Income 
 reaches $121.8 million. At an Adjusted Operating Income of $173 million 

or more, you will receive 200% of your target corporate bonus. 

 

			
	ANNUAL BONUS
	 Adjusted
 Operating Income
	  	 Bonus Payout
 (percentage of target)

	 <$85,300,000
	  	0%
	 $85,300,000
	  	70%
	 $97,400,000
	  	80%
	 $109,600,000
	  	90%
	 $121,800,000
	  	100%
	 $132,000,000
	  	120%
	 $142,300,000
	  	140%
	 $152,500,000
	  	160%
	 $162,700,000
	  	180%
	 >=173,000,000
	  	200%

 This information is extremely confidential and should be 

treated as such. Please do not share this information with 
 anyone inside or outside of MKS Instruments, Inc. 

  
 

 
 2012 MKS Management/Key Employee Bonus Plans 

The MKS Annual Bonus Plan (The Plan) is based on fiscal year performance (January through December). Performance measurements are set at the beginning of
the fiscal year. 
 Plan participants have 100% of their bonus tied to achievement of corporate goals. 

Participation/Approval: 
 Participation
in the Plan requires the approval of the most senior individual in each organization as well as Human Resources and the Chief Executive Officer and President. Participation in the plan is reviewed on an annual basis. Past participation in this
program, as well as the percentage target, is not guaranteed for subsequent plan years. 
 Target: 

Bonus target guidelines are established for positions as a percentage of pay. 
 Payout: 
 The bonus payout amount is a percentage of eligible W-2 earnings received
during the plan period, i.e.“base salary” including regular, holiday, vacation, sick, and retro pay. Bonus payments attributable to the prior year are excluded from this calculation. 

Administration: 
 Bonus payout is made as
soon as possible after the end of the fiscal year and the performance assessment has been completed, but in no event later than March 15 of the subsequent year. 
 Note: In order to receive the bonus payment the plan participant must be actively employed as of the payout date of The Plan. 
 MKS reserves the right to change the plan at any time, subject to senior management discretion. In no way does this plan create a contract of employment.

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