Accelerated Stock Buyback Agreement



 Exhibit 10.1 
 GOLDMAN SACHS & CO. | 85 BROAD STREET | NEW YORK, NEW YORK 10004 | TEL: 212-902-1000 
 Opening Transaction 
  

			
	To:	  	 Entegris, Inc.
 3500 Lyman
Boulevard
 Chaska, MN 55318

		
	A/C:	  	028505543
		
	From:	  	Goldman, Sachs & Co.
		
	Subject:	  	Accelerated Share Buyback
		
	Ref. No:	  	As provided in the Supplemental Confirmation
		
	Date:	  	August 30, 2006

 This master confirmation (“Master Confirmation”) dated as August 30, 2006,
is intended to supplement the terms and provisions of certain Transactions (each, a “Transaction”) entered into from time to time between Goldman, Sachs & Co. (“GS&Co.”) and Entegris, Inc.
(“Counterparty”). This Master Confirmation, taken alone, is neither a commitment by either party to enter into any Transaction nor evidence of a Transaction. The terms of any particular Transaction shall be set forth in a
Supplemental Confirmation in the form of Annex A hereto, which references this Master Confirmation (the “Supplemental Confirmation”). This Master Confirmation and each Supplemental Confirmation together shall constitute a
“Confirmation” as referred to in the Agreement specified below. 
 The definitions and provisions contained in the 2002 ISDA Equity
Derivatives Definitions (the “Equity Definitions”), as published by the International Swaps and Derivatives Association, Inc., are incorporated into this Master Confirmation. This Master Confirmation and each Supplemental
Confirmation evidence a complete binding agreement between the Counterparty and GS&Co. as to the subject matter and terms of each Transaction to which this Master Confirmation and the related Supplemental Confirmation relate and shall supersede
all prior or contemporaneous written or oral communications with respect thereto. 
 This Master Confirmation and each Supplemental
Confirmation supplement, form a part of, and are subject to an agreement in the form of the 1992 ISDA Master Agreement (Multicurrency-Cross Border) (the “Agreement”) as if GS&Co. and Counterparty had executed the Agreement on
the date of this Master Confirmation (but without any Schedule except for (i) the election of Loss and Second Method, New York law (without regard to the conflicts of law principles) as the governing law and US Dollars (“USD”)
as the Termination Currency, (ii) the election that subparagraph (ii) of Section 2(c) will not apply to Transactions, (iii) the replacement of the word “third” in the last line of Section 5(a)(i) with the word
“first” and (iv) the election that the “Cross Default” provisions of Section 5(a)(vi) shall apply to Counterparty, with a “Threshold Amount” of USD 50 million). 
 All provisions contained or incorporated by reference in the Agreement shall govern this Master Confirmation and each Supplemental Confirmation relating
to a Transaction except as expressly modified herein or in the related Supplemental Confirmation. 
 If, in relation to any Transaction to
which this Master Confirmation and related Supplemental Confirmation relate, there is any inconsistency between the Agreement, this Master Confirmation, any Supplemental Confirmation and the Equity Definitions, the following will prevail for
purposes of such Transaction in the order of precedence indicated: (i) such Supplemental Confirmation; (ii) this Master Confirmation; (iii) the Agreement; and (iv) the Equity Definitions. 







 The effectiveness of this Master Confirmation and any Supplemental Confirmation shall be subject to the
satisfaction of the terms and conditions set forth in Schedule A, or, if Counterparty has previously submitted to GS&Co. a new account application and agreement for corporate repurchase programs (the “New Account Application and
Agreement”), the terms and conditions set forth in such New Account Application and Agreement. 
 1. On the third Clearance System
Business Day following the Trade Date for each Transaction, GS&Co. will deliver to Counterparty a number of Shares equal to the Number of Shares for the relevant Transaction, and Counterparty will pay to GS&Co. cash in immediately available
funds in an amount to be specified in the Supplemental Confirmation (the “Initial Purchase Price”) equal to the product of the Initial Share Price (as set forth below) and the Number of Shares. The additional terms of each
Transaction set forth below are intended to be in substance and effect an adjustment to the Initial Purchase Price. Solely for the purposes of the Equity Definitions, each Transaction shall be treated as if it were a Share Forward Transaction.
However, the parties acknowledge that the Transaction is a Share buyback transaction and is not intended to effect a net issuance of shares or raise equity capital for Counterparty. Set forth below are the terms and conditions which, together with
the terms and conditions set forth in each Supplemental Confirmation (in respect of each relevant Transaction), shall govern each such Transaction. 
 General Terms: 
  

			
	Trade Date:	  	For each Transaction, as set forth in the Supplemental Confirmation.
		
	Seller:	  	Counterparty
		
	Buyer:	  	GS&Co.
		
	Shares:	  	Common Stock, $0.01 par value of Counterparty, CUSIP No. 29362U104 (Ticker: ENTG)
		
	Number of Shares:	  	For each Transaction, as set forth in the Supplemental Confirmation.
		
	Initial Share Price	  	For each Transaction, as set forth in the Supplemental Confirmation, to be the Relevant Price as of the Trade Date.
		
	Forward Price:	  	For each Transaction, the Initial Share Price for such Transaction.
		
	Prepayment:	  	Not Applicable
		
	Variable Obligation:	  	Not Applicable
		
	Exchange:	  	Nasdaq National Market
		
	Related Exchange(s):	  	All Exchanges
		
	Market Disruption Event:	  	The definition of “Market Disruption Event” in Section 6.3(a) of the Equity Definitions is hereby amended by replacing the words “at any time during the one-hour period that ends
at the relevant Valuation Time” in the third line thereof with the words “at any time on any Scheduled Trading Day during the Valuation Period or” after the word “material”.
		
	Counterparty Additional Payment Amount:	  	For each Transaction, as set forth in the Supplemental Confirmation.








 Valuation: 
  

			
	Valuation Period:	  	Each Scheduled Trading Day during the period commencing on and including the first day of the Calculation Period with respect to the Collared Accelerated Stock Buyback transaction (the
“Collared ASB”) evidenced by the confirmation dated August 30, 2006 between Counterparty and GS&Co. confirming the terms of collared accelerated Share buyback transactions between Counterparty and GS&Co., to and
including the Valuation Date (but excluding any day(s) on which the Valuation Period is suspended in accordance with Section 5 herein).
		
		  	Notwithstanding anything to the contrary in the Equity Definitions, to the extent that any Scheduled Trading Day in the Valuation Period is a Disrupted Day, the Calculation Agent may postpone
the Valuation Date. In such event, the Calculation Agent must determine whether (i) such Disrupted Day is a Disrupted Day in full, in which case such Disrupted Day shall not be included for purposes of determining the Settlement Price, or
(ii) such Disrupted Day is a Disrupted Day only in part, in which case the VWAP Price for such Disrupted Day shall be determined by the Calculation Agent based on Rule 10b-18 eligible transactions in the Shares on such Disrupted Day effected
before the relevant Market Disruption Event occurred and/or after the relevant Market Disruption Event ended, and the weighting of the VWAP Prices for the relevant Scheduled Trading Days during the Valuation Period shall be adjusted by the
Calculation Agent for purposes of determining the Settlement Price, with such adjustments based on, among other factors, the duration of any Market Disruption Event and the volume, historical trading patterns and price of the
Shares.
		
		  	If a Disrupted Day occurs during the Valuation Period, and each of the nine immediately following Scheduled Trading Days is a Disrupted Day, then the Calculation Agent, in its good faith and
commercially reasonable discretion, may either (i) determine the VWAP Price for such ninth Scheduled Trading Day and adjust the weighting of the VWAP Prices for the relevant Scheduled Trading Days during the Valuation Period as it deems
appropriate for purposes of determining the Settlement Price based on, among other factors, the duration of any Market Disruption Event and the volume, historical trading patterns and price of the Shares or (ii) disregard such day for purposes
of determining the Settlement Price and further postpone the Valuation Date as it deems appropriate to determine the VWAP Price.
		
	Valuation Date:	  	For each Transaction, the date set forth in the Supplemental Confirmation (as the same may be postponed in accordance with the provisions hereof); provided that GS&Co. shall have
the right to designate any date (the “Accelerated Valuation Date”) on or after the First Acceleration Date to be the Valuation Date by providing notice to Counterparty of any such designation on the Accelerated Valuation Date;
provided









			
		  	further, that if GS&Co. provides notice to Counterparty of such designation prior to 9:30 A.M. New York City time on the Accelerated Valuation Date, then the Valuation Date shall
be the Exchange Business Day immediately preceding such Accelerated Valuation Date.
		
	First Acceleration Date:	  	For each Transaction, as set forth in the Supplemental Confirmation.

 Settlement Terms: 
  

			
	Settlement Currency:	  	USD
		
	Settlement Method Election:	  	Applicable; provided that (a) Section 7.1 of the Equity Definitions is hereby amended by deleting the word “Physical” in the sixth line thereof and replacing it with the words
“Net Share” and deleting the word “Physical” in the last line thereof and replacing it with the word “Cash” and (b) in the event that GS&Co. would deliver to the Counterparty an amount of Shares under Net Share
Settlement, Cash Settlement shall be applicable in lieu of Net Share Settlement.
		
	Electing Party:	  	Counterparty
		
	Settlement Method Election Date:	  	The earlier of (i) the fifth Scheduled Trading Day immediately prior to the originally scheduled Valuation Date and (ii) the Accelerated Valuation Date, as the case may be.
		
	Default Settlement Method:	  	Cash Settlement
		
	Forward Cash Settlement Amount:	  	An amount in the Settlement Currency equal to the sum of (a) the Number of Shares multiplied by an amount equal to (i) the Settlement Price minus (ii) the Forward Price plus (b)
the Counterparty Additional Payment Amount.
		
	Settlement Price:	  	The arithmetic mean of the VWAP Prices of the Shares for each Scheduled Trading Day in the Valuation Period minus the Settlement Price Adjustment Amount.
		
	Settlement Price Adjustment Amount:	  	For each Transaction, as set forth in the Supplemental Confirmation.
		
	VWAP Price:	  	For any Exchange Business Day, as determined by the Calculation Agent based on the NASDAQ Volume Weighted Average Price per Share for the regular trading session (including any extensions
thereof) for such Exchange Business Day (without regard to pre-open or after hours trading outside of any regular trading session for such Exchange Business Day), as published by Bloomberg at 4:15 p.m. New York time on such Exchange Business Day, on
Bloomberg page “ENTG.Q <Equity> AQR_SEC” (or any successor thereto). For purposes of calculating the VWAP Price, the Calculation Agent will include only those trades that are reported during the period of time during which
Counterparty could purchase its own shares under Rule 10b-18(b)(2), and pursuant to the conditions of Rule 10b-18(b)(3) and (b)(4) each under the Exchange Act (as defined herein) (such trades, “Rule 10b-18 eligible









			
	 	  	transactions”).
		
	Counterparty’s Contact Details for Purpose of Giving Notice:	  	To be provided by Counterparty
		
	GS&Co.’s Contact Details for Purpose of Giving Notice:	  	Telephone No.: (212) 902-8996
		
		  	Facsimile No.: (212) 902-0112
		
		  	Attention: Equity Operations: Options and Derivatives
		
		  	With a copy to:
		  	Tracey McCabe
		  	Equity Capital Markets
		  	One New York Plaza
		  	New York, NY 10004
		  	Telephone No.: (212) 357-0428
		  	Facsimile No.: (212) 902-3000

 Net Share Settlement: 
  

			
		
	Net Share Settlement Procedures:	  	Net Share Settlement shall be made in accordance with the procedures attached hereto as Annex B.
		
	Net Share Settlement Price:	  	The Relevant Price on the Net Share Valuation Date, as reduced by the per Share amount of the underwriting discount and/or commissions agreed to pursuant to the equity underwriting agreement
contemplated by the Net Share Settlement Procedures.
		
	Valuation Time:	  	As provided in Section 6.1 of the Equity Definitions; provided that Section 6.1 of the Equity Definitions is hereby amended by inserting the words “Net Share Valuation Date,”
before the words “Valuation Date” in the first and third lines thereof.
		
	Net Share Valuation Date:	  	The Exchange Business Day immediately following the Valuation Date.
		
	Net Share Settlement Date:	  	The third Exchange Business Day immediately following the Valuation Date.
		
	Reserved Shares:	  	Initially, 4,000,000 Shares. The Reserved Shares may be increased or decreased in a Supplemental Confirmation.
		
	Relevant Price:	  	As provided in Section 1.23(b) of the Equity Definitions; provided that Section 1.23(b) of the Equity Definitions is hereby amended by replacing each occurrence therein of “the
Valuation Date or Averaging Date, as the case may be,” with the term “such day.”

 Share Adjustments: 
  

			
	Potential Adjustment Event:	  	Notwithstanding anything to the contrary in Section 11.2(e) of the Equity Definitions, an Extraordinary Dividend shall not constitute a Potential Adjustment Event.









			
	Extraordinary Dividend:	  	For any calendar quarter, any dividend or distribution on the Shares with an ex-dividend date occurring during such calendar quarter (other than any dividend or distribution of the type
described in Section 11.2(e)(i) or Section 11.2(e)(ii)(A) or (B) of the Equity Definitions) (a “Dividend”) the amount or value of which (as determined by the Calculation Agent), when aggregated with the amount or value (as
determined by the Calculation Agent) of any and all previous Dividends with ex-dividend dates occurring in the same calendar quarter, exceeds the Ordinary Dividend Amount.
		
	Ordinary Dividend Amount:	  	For each Transaction, as set forth in the Supplemental Confirmation.
		
	Method of Adjustment:	  	Calculation Agent Adjustment

 Extraordinary Events: 
 Consequences of Merger Events: 
  

			
	 (a) Share-for-Share:
	    	Modified Calculation Agent Adjustment
		
	 (b) Share-for-Other:
	    	Cancellation and Payment
		
	 (c) Share-for-Combined:
	    	Component Adjustment
		
	 Determining Party:
	    	GS&Co.
		
	Tender Offer:	    	Applicable
		
	Consequences of Tender Offers:	    	

  

			
	 (a) Share-for-Share:
	    	Modified Calculation Agent Adjustment
		
	 (b) Share-for-Other:
	    	Cancellation and Payment
		
	 (c) Share-for-Combined:
	    	Component Adjustment
		
	 Determining Party:
	    	GS&Co.
		
	Nationalization, Insolvency or Delisting:	    	Cancellation and Payment; provided that in addition to the provisions of Section 12.6(a)(iii) of the Equity Definitions, it shall also constitute a Delisting if the Exchange is located in
the United States and the Shares are not immediately re-listed, re-traded or re-quoted on any of the New York Stock Exchange, the American Stock Exchange or The NASDAQ National Market (or their respective successors); and if the Shares are
immediately re-listed, re-traded or re-quoted on any such exchange or quotation system, such exchange or quotation system shall be deemed to be the Exchange.
		
	Additional Disruption Events:	    	
		
	 (a) Change in Law:
	    	Applicable
		
	 (b) Insolvency Filing:
	    	Applicable









			
	 (c) Loss of Stock Borrow:
	    	Applicable; provided that Sections 12.9(a)(vii) and 12.9(b)(iv) of the Equity Definitions are amended by deleting the words “at a rate equal to or less than the Maximum Stock Loan
Rate” and replacing them with “at a rate of return equal to or greater than zero”.
		
	 Hedging Party:
	    	GS&Co.
		
	 Determining Party:
	    	GS&Co.
		
	Non-Reliance:	    	Applicable
		
	Agreements and Acknowledgements Regarding Hedging Activities:	    	Applicable
		
	Additional Acknowledgements:	    	Applicable









			
	Net Share Settlement Upon Early Termination:	  	Counterparty shall have the right, in its sole discretion, in lieu of making any payment required to be made by it (the “Early Termination Amount”) (x) pursuant to Sections
6(d) and 6(e) of the Agreement following the occurrence of an Early Termination Date in respect of the Agreement or (y) pursuant to Section 12.7 or 12.9 of the Equity Definitions (except with respect to any portion of the consideration for the
Shares consisting of cash in the event of a Merger Event or Tender Offer) following the occurrence of an Extraordinary Event, elect to settle its obligation to pay the Early Termination Amount in Shares in accordance with the terms, and subject to
the conditions, for Net Share Settlement herein by giving written notice to GS&Co. of such election on the day that the notice fixing an Early Termination Date is effective or the date on which the Transaction(s) are cancelled or terminated
pursuant to Article 12 of the Equity Definitions (the “Cancellation Date”). If Counterparty elects Net Share Settlement under such circumstances: (a) the Net Share Valuation Date shall be (x) the date specified in the notice fixing
an Early Termination Date, which shall be either the Exchange Business Day that such notice is effective or the first Exchange Business Day immediately following the Exchange Business Day that such notice is effective or (y) the Cancellation Date,
as the case may be, (b) the Net Share Settlement Date shall be deemed to be the Exchange Business Day immediately following the Early Termination Date or the Cancellation Date, as the case may be and (c) all references to Forward Cash Settlement
Amount in Annex B hereto shall be deemed references to the Early Termination Amount or the Cancellation Amount, as the case may be.
		
	Transfer:	  	Notwithstanding anything to the contrary in the Agreement, GS&Co. may assign, transfer and set over all rights, title and interest, powers, privileges and remedies of GS&Co. under any
Transaction, in whole or in part, to an affiliate of GS&Co. that is guaranteed by The Goldman Sachs Group, Inc. without the consent of Counterparty.
		
	GS&Co. Payment Instructions:	  	Chase Manhattan Bank New York
		  	For A/C Goldman, Sachs & Co.
		  	A/C # 930-1-011483
		  	ABA: 021-000021
		
	Counterparty Payment Instructions:	  	To be provided by Counterparty

 2. Calculation Agent: GS&Co. 
 3. Representations, Warranties and Covenants of GS&Co. and Counterparty. 
 (a) Each party represents and warrants that it (i) is an “eligible contract participant”, as defined in the U.S. Commodity Exchange Act,
as amended and (ii) is entering into each Transaction hereunder as principal (and not as agent or in any other capacity, fiduciary or otherwise) and not for the benefit of any third party. 
 (b) Each party acknowledges that the offer and sale of each Transaction to it is intended to be exempt from registration under the Securities Act of
1933, as amended (the “Securities Act”), by virtue of Section 4(2) 







 thereof and the provisions of Regulation D promulgated thereunder (“Regulation D”). Accordingly, each
party represents and warrants to the other that (i) it has the financial ability to bear the economic risk of its investment in each Transaction and is able to bear a total loss of its investment, (ii) it is an “accredited
investor” as that term is defined under Regulation D, (iii) it will purchase each Transaction for investment and not with a view to the distribution or resale thereof in a manner that would violate the Securities Act, and (iv) the
disposition of each Transaction is restricted under this Master Confirmation, the Securities Act and state securities laws. 
 (c) For the
avoidance of doubt, GS&Co. has implemented reasonable policies and procedures, taking into consideration the nature of its business, to ensure that individuals making investment decisions would not violate laws prohibiting trading on the basis
of material nonpublic information. Such individuals shall not be in possession of material nonpublic information during all relevant times beginning the date hereof through and including the Valuation Date. 
 3A. Additional Representations, Warranties and Covenants of GS&Co. During the period commencing on the first day of the Valuation Period and
ending on the 20th Exchange Business Day immediately following the end of the Valuation Period, or such earlier day
as elected by GS&Co. and communicated to Counterparty on such day (the “Relevant Period”), GS&Co. will use good faith efforts to effect purchases of Shares in connection with any Transaction in accordance with Rule
10b-18(b)(2), (3) and (4), and effect calculations in respect thereof, as if those sections applied to GS&Co., taking into account any applicable Securities and Exchange Commission no-action letters as appropriate and subject to any delays
between the execution and reporting of a trade of the Shares on the Exchange and other circumstances beyond its control. 
 4. Additional
Representations, Warranties and Covenants of Counterparty. 
 As of (i) the date hereof and (ii) the period of time from the
Trade Date until the time that each party has fully performed all of its obligations under the related Transaction, Counterparty represents, warrants and covenants to GS&Co. that: 
 (a) the purchase or writing of any Transaction and the transactions contemplated hereby do not and will not violate Rule 13e-1 or Rule 13e-4 under the
Securities Exchange Act of 1934, as amended (the “Exchange Act”); 
 (b) it is not entering into any Transaction (i) on
the basis of, and is not aware of, any material non-public information with respect to the Shares (ii) in anticipation of, in connection with, or to facilitate, a distribution of its securities, a self tender offer or a third-party tender offer
or (iii) to create actual or apparent trading activity in the Shares (or any security convertible into or exchangeable for the Shares) or to raise or depress or otherwise manipulate the price of the Shares (or any security convertible into or
exchangeable for the Shares); 
 (c) Counterparty is in compliance with its reporting obligations under the Exchange Act and its most recent
Annual Report on Form 10-K, together with all reports subsequently filed by it pursuant to the Exchange Act, taken together and as amended and supplemented to the date of this representation, do not, as of their respective filing dates, contain any
untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, it being understood that
Counterparty has no obligation hereunder or under the Agreement to make cash payments to GS&Co. in the event Counterparty fails to make timely filings with the Securities and Exchange Commission during the term of any Transaction; 
 (d) each Transaction is being entered into pursuant to a publicly disclosed Share buy-back program and its Board of Directors has approved the use of
derivatives to effect the Share buy-back program; 
 (e) without limiting the generality of Section 13.1 of the Equity Definitions,
Counterparty acknowledges that GS&Co. is not making any representations or warranties with respect to the treatment of any Transaction under FASB Statements 128, 133 (as amended), 149 or 150, EITF 00-19 (or any successor issue statements) or
under the Financial Accounting Standards Board’s Liabilities & Equity Project; 







 (f) Counterparty is not, and will not be, engaged in a “distribution” of Shares or securities
that are convertible into, or exchangeable or exercisable for Shares for purposes of Regulation M promulgated under the Exchange Act (“Regulation M”) at any time during the Relevant Period, or the one Exchange Business Day
immediately following the Relevant Period unless Counterparty has provided written notice to GS&Co. of such distribution (a “Regulation M Distribution Notice”) not later than the Scheduled Trading Day immediately preceding the
first day of the relevant “restricted period” (as defined in Regulation M); Counterparty acknowledges that any such notice may cause the Valuation Period to be extended or suspended pursuant to Section 5 below; accordingly,
Counterparty acknowledges that its delivery of such notice must comply with the standards set forth in Section 6 below; 
 (g) it shall
report each Transaction as required under Regulation S-K and/or Regulation S-B under the Exchange Act, as applicable; 
 (h) on the Trade
Date and on each day of the Valuation Period, (i) the assets of Counterparty at their fair valuation exceed the liabilities of Counterparty, including contingent liabilities, (ii) the capital of Counterparty is adequate to conduct the
business of Counterparty and (iii) Counterparty has the ability to pay its debts and obligations as such debts mature and does not intend to, or does not believe that it will, incur debt beyond its ability to pay as such debts mature;

 (i) it has not, and during any Valuation Period will not, enter into agreements similar to the Transactions described herein where any
initial hedge period (however defined) or the calculation period (however defined) in such other transaction will overlap at any time (including as a result of extensions in such initial hedge period or calculation period as provided in the relevant
agreements) with any Valuation Period under this Master Confirmation. In the event that the initial hedge period or calculation period in any other similar transaction overlaps with any Valuation Period under this Master Confirmation as a result of
an extension of the Valuation Date pursuant to Section 5 herein, Counterparty shall promptly amend such transaction to avoid any such overlap; and 
 (j) Counterparty is not and, after giving effect to the Transaction, will not be, required to register as an “investment company” as such term is defined in the Investment Company Act of 1940, as amended.

  

	5.	Suspension of Valuation Period. 

 (a) If
Counterparty concludes that it will be engaged in a distribution of the Shares for purposes of Regulation M, Counterparty agrees that it will, on a day no later than the Scheduled Trading Day immediately preceding the start of the relevant
restricted period, provide GS&Co. with a Regulation M Distribution Notice. Upon the effectiveness of such Regulation M Distribution Notice, GS&Co. shall halt any purchase of Shares in connection with hedging any Transaction during the
relevant “restricted period”. If on any Scheduled Trading Day Counterparty delivers the Regulation M Distribution Notice in writing (and confirms by telephone) by 8:30 a.m. New York Time (the “Notification Time”) then such
notice shall be effective as of such Notification Time. In the event that Counterparty delivers such Regulation M Distribution Notice in writing and/or confirms by telephone after the Notification Time, then such notice shall be effective as of 8:30
a.m. New York Time on the following Scheduled Trading Day or as otherwise required by law or agreed between Counterparty and GS&Co. The Valuation Period shall be suspended and the Valuation Date shall be postponed for each Scheduled Trading Day
in such restricted period and GS&Co. shall cease effecting purchases of shares in connection with this Transaction. 
 (b) In the event
that GS&Co. concludes, in its good faith discretion, based on advice of outside legal counsel, that it is appropriate with respect to any legal, regulatory or self-regulatory requirements or related policies and procedures (whether or not such
requirements, policies or procedures are imposed by law or have been voluntarily adopted by GS&Co.), for it to refrain from purchasing Shares on any Scheduled Trading Day during the Valuation Period, GS&Co. may by written notice to
Counterparty elect to suspend the Valuation Period for such number of Scheduled Trading Days as is specified in the notice. The notice shall not specify, and GS&Co. shall not otherwise communicate to Counterparty, the reason for
GS&Co.’s election to suspend the Valuation Period. The Valuation Period shall be suspended and the Valuation Date shall be postponed for each Scheduled Trading Day occurring during any such suspension. 







 (c) In the event that the Valuation Period is suspended pursuant to Section 5(a) or (b) above
during the regular trading session on the Exchange then the Calculation Agent in its good faith and commercially reasonable discretion shall, in calculating the Forward Price, extend the Valuation Period and make adjustments to the weighting of each
Rule 10b-18 eligible transaction in the Shares on the relevant Exchange Business Days during the Valuation Period for purposes of determining the Forward Price, with such adjustments based on, among other factors, the duration of any such suspension
and the volume, historical trading patterns and price of the Shares. 
 6. 10b5-1 Plan. Counterparty represents, warrants and
covenants to GS&Co. that for each Transaction: 
 (a) Counterparty is entering into this Master Confirmation and each Transaction
hereunder in good faith and not as part of a plan or scheme to evade the prohibitions of Rule 10b5-1 under the Exchange Act (“Rule 10b5-1”) or any antifraud or anti-manipulation provisions of the federal or applicable state
securities laws and that it has not entered into or altered and will not enter into or alter any corresponding or hedging transaction or position with respect to the Shares. Counterparty acknowledges that it is the intent of the parties that each
Transaction entered into under this Master Confirmation comply with the requirements of Rule 10b5-1(c)(1)(i)(A) and (B) and each Transaction entered into under this Master Confirmation shall be interpreted to comply with the requirements of
Rule 10b5-1(c). 
 (b) Counterparty will not seek to control or influence GS&Co. to make “purchases or sales” (within the
meaning of Rule 10b5-1(c)(1)(i)(B)(3)) under any Transaction entered into under this Master Confirmation, including, without limitation, GS&Co.’s decision to enter into any hedging transactions. Counterparty represents and warrants that it
has consulted with its own advisors as to the legal aspects of its adoption and implementation of this Master Confirmation and each Supplemental Confirmation under Rule 10b5-1. 
 (c) Counterparty acknowledges and agrees that any amendment, modification, waiver or termination of this Master Confirmation or the relevant Supplement
Confirmation must be effected in accordance with the requirements for the amendment or termination of a “plan” as defined in Rule 10b5-1(c). Without limiting the generality of the foregoing, any such amendment, modification, waiver
or termination shall be made in good faith and not as part of a plan or scheme to evade the prohibitions of Rule 10b-5, and no such amendment, modification, waiver or termination shall be made at any time at which Counterparty or any officer,
director, manager or similar person of Counterparty is aware of any material non-public information regarding Counterparty or the Shares. 
 7. Counterparty Purchases. Counterparty represents, warrants and covenants to GS&Co. that, for each Transaction, Counterparty (or any “affiliated purchaser” as defined in Rule 10b-18 under the Exchange Act
(“Rule 10b-18”)) shall not, without the prior written consent of GS&Co., directly or indirectly purchase any Shares (including by means of a derivative instrument), listed contracts on the Shares or securities that are
convertible into, or exchangeable or exercisable for Shares (including, without limitation, any Rule 10b-18 purchases of blocks (as defined in Rule 10b-18)) during any Relevant Period. During this time, any such purchases by Counterparty shall be
made through GS&Co., or if not through GS&Co., with the prior written consent of GS&Co., and in compliance with Rule 10b-18 or otherwise in a manner that Counterparty and GS&Co. believe is in compliance with applicable requirements.

 8. Additional Termination Events. The declaration of any Extraordinary Dividend by Counterparty during the Valuation Period for any
Transaction shall constitute an Additional Termination Event, with Counterparty as the sole Affected Party and all Transactions hereunder as the Affected Transactions. 
 9. Additional Event of Default. The following occurrence will constitute an Event of Default for purposes of Section 5(a) of the Agreement (with Counterparty considered to be the Defaulting Party):
Counterparty fails to perform any obligation required to be performed under any other agreement between Counterparty and GS&Co. or its affiliated entities. 
 10. Automatic Termination Provisions. Notwithstanding anything to the contrary in Section 6 of the Agreement: 







 (a) If a Termination Price is specified in one or more Supplemental Confirmations, then an Additional
Termination Event with Counterparty as the sole Affected Party and all Transactions to which such Supplemental Confirmations relate as Affected Transactions will automatically occur without any notice or action by GS&Co. or Counterparty if the
price of the Shares on the Exchange at any time falls below such Termination Price. The Exchange Business Day that the price of the Shares on the Exchange at any time falls below the Termination Price will be the “Early Termination Date”
for purposes of the Agreement. 
 (b) Notwithstanding anything to the contrary in Section 6(d) of the Agreement, following the
occurrence of such an Additional Termination Event, GS&Co. will notify Counterparty of the amount owing under Section 6(e) of the Agreement within a commercially reasonable time period (with such period based upon the amount of time,
determined by GS&Co. (or any of its Affiliates) in its good faith and commercially reasonable discretion, that it would take to unwind any of its Hedge Position(s) related to the Transaction in a commercially reasonable manner based on relevant
market indicia). For purposes of the “Net Share Settlement Upon Early Termination” provisions herein, the date that such notice is effective shall constitute the Net Share Valuation Date and the Early Termination Date. 
 11. Special Provisions for Merger Transactions. Notwithstanding anything to the contrary herein or in the Equity Definitions, Counterparty shall,

 (a) prior to the opening of trading in the Shares on any day during any Relevant Period on which Counterparty makes, or expects to be
made, any public announcement (as defined in Rule 165(f) under the Securities Act of 1933, as amended) of any Merger Transaction, notify GS&Co. of such public announcement; 
 (b) promptly notify GS&Co. following any such announcement that such announcement has been made; 
 (c) promptly provide GS&Co. with written notice specifying (i) Counterparty’s average daily Rule 10b-18 Purchases (as defined in Rule
10b-18) during the three full calendar months immediately preceding the Announcement Date that were not effected through GS&Co. or its affiliates and (ii) the number of Shares purchased pursuant to the proviso in Rule 10b-18(b)(4) under the
Exchange Act for the three full calendar months preceding the Announcement Date. Such written notice shall be deemed to be a certification by Counterparty to GS&Co. that such information is true and correct. In addition, Counterparty shall
promptly notify GS&Co. of the earlier to occur of the completion of such transaction and the completion of the vote by target shareholders. Counterparty acknowledges that any such notice may cause the terms of any Transaction to be adjusted or
such Transaction to be terminated; accordingly, Counterparty acknowledges that its delivery of such notice must comply with the standards set forth in Section 6; and 
 (d) GS&Co. in its good faith and commercially reasonable discretion may (i) suspend the Valuation Period and postpone the Valuation Date or (ii) treat the occurrence of such public announcement as an
Additional Termination Event with Counterparty as the sole Affected Party and the Transactions hereunder as the Affected Transactions. 
 “Merger Transaction” means any merger, acquisition or similar transaction involving a recapitalization as contemplated by Rule 10b-18(a)(13)(iv) under the Exchange Act. 
 12. Special Calculation and Settlement Following Early Termination and Extraordinary Events. Notwithstanding anything to the contrary in this
Master Confirmation or any Supplemental Confirmation hereunder, in the event that an Extraordinary Event occurs that results in the termination or cancellation of one or more Transactions or an Early Termination Date occurs or is designated with
respect to one or more Transactions (each an “Elected Transaction” and collectively, the “Elected Transactions”), then GS&Co. may elect, in its sole discretion, by notice to Counterparty, to have Counterparty
deliver the Number of Early Settlement Shares to GS&Co. on the date that such notice is effective and either (x) GS&Co. shall pay to Counterparty the Special Termination Amount, if such amount is positive, or (y) Counterparty shall
either (1) pay to GS&Co. the absolute value of the Special Termination Amount, if such amount is negative, or (2) elect for the provisions set forth opposite “Net Share Settlement Upon Early Termination” to apply except that
all references in such provision to “the Early Termination Amount” shall be replaced with references to “the Special Termination Amount”. To the extent that Counterparty elects to deliver Early 







 Settlement Shares to GS&Co. accompanied by an effective Registration Statement (as defined in Annex B and
satisfactory to GS&Co. in its sole discretion) covering such Shares, Counterparty must be in compliance with the conditions specified in (iii) though (ix) in Annex B hereto at the time of such delivery. If Counterparty elects to
deliver Unregistered Shares (as defined in Annex B) to GS&Co., Counterparty and GS&Co. will negotiate in good faith on acceptable procedures and documentation relating to the sale of such Unregistered Shares. Counterparty and GS&Co.
agree that the payment of the Special Termination Amount and the delivery of the Early Settlement Shares satisfy in full any obligation of a party to make any payments pursuant to Section 6(e) of the Agreement or Article 12 of the Equity
Definitions, as the case may be, in respect of the Elected Transactions. 
 “Number of Early Settlement Shares” means a
number of Shares (“Early Settlement Shares”) as determined by GS&Co. in a good faith and commercially reasonable manner based on its or any of its Affiliates’ Hedge Positions with respect to the Elected Transactions under this
Master Confirmation. 
 “Special Termination Amount” means the sum of (a) the product of (i) the Number of Early
Settlement Shares multiplied by (ii) a per Share price (the “Early Termination Price”) determined by GS&Co. in a good faith and commercially reasonable manner based on relevant market indicia, including
GS&Co.’s funding costs associated with Early Settlement Shares and costs incurred or estimated to be incurred by GS&Co. in connection with the purchase and sale of Shares in order to close out GS&Co.’s or any of its
Affiliates’ Hedge Positions with respect to each Affected Transaction and, in the event that Counterparty delivers Unregistered Shares to GS&Co., whether GS&Co. and Counterparty have agreed on acceptable procedures and documentation
relating to such Unregistered Shares as described above and (b) any amount owing under Section 6(e) of the Agreement or Article 12 of the Equity Definitions, as the case may be, in respect of the Elected Transactions by GS&Co. to
Counterparty (expressed as a positive number) or by Counterparty to GS&Co. (expressed as a negative number). 
 13.
Acknowledgments. The parties hereto intend for: 
 (a) Each Transaction to be a “securities contract” as defined in
Section 741(7) of the U.S. Bankruptcy Code (Title 11 of the United States Code) (the “Bankruptcy Code”), a “swap agreement” as defined in Section 101(53B) of the Bankruptcy Code, or a “forward contract” as
defined in Section 101(25) of the Bankruptcy Code, and the parties hereto to be entitled to the protections afforded by, among other Sections, Sections 362(b)(6), 362(b)(17), 362(b)(27), 555, 556, 560 and 561 of the Bankruptcy Code; 

(b) the Agreement to be a “master netting agreement” as defined in Section 101 (38A) of the Bankruptcy Code; 
 (c) a party’s right to liquidate or terminate any Transaction, net out or offset termination values of payment amounts, and to exercise any other
remedies upon the occurrence of any Event of Default under the Agreement with respect to the other party to constitute a “contractual right” (as defined in the Bankruptcy Code); 
 (d) any cash, securities or other property transferred as performance assurance, credit support or collateral with respect to each Transaction to
constitute “margin payments” (as defined in the Bankruptcy Code); and 
 (e) all payments for, under or in connection with each
Transaction, all payments for the Shares and the transfer of such Shares to constitute “settlement payments” and “transfers” (as defined in the Bankruptcy Code). 
 14. Calculations on Early Termination and Set-Off. 
 (a) Notwithstanding anything to the contrary in the Agreement or the Equity Definitions, the calculation of any Settlement Amounts, Unpaid Amounts and amounts owed in respect of cancelled Transactions under Article 12
of the Equity Definitions shall be calculated separately for (A) all Terminated Transactions (it being understood that such term for purposes of this paragraph includes Transactions cancelled pursuant to Article 12 of the Equity Definitions) in
the Shares of the Issuer that qualify as equity under applicable accounting rules (collectively, the “Equity Shares”) as determined by the Calculation Agent and (B) all other Terminated Transactions under the Agreement
including, without limitation, Transactions in Shares other than those of the Issuer (collectively, the “Other Shares”). 







 (b) The parties agree to amend Section 6 of the Agreement by adding a new Section 6(f) thereto
as follows: 
 “(f) Upon the occurrence of an Event of Default or Termination Event with respect to a party who is the Defaulting Party
or the Affected Party or upon the occurrence of an Extraordinary Event that results in the termination or cancellation of any Transaction (such Defaulting Party, Affected Party or, in the case of such an Extraordinary Event, either party,
“X”), the other party (“Y”) will have the right (but not be obliged) without prior notice to X or any other person to set-off or apply any obligation of X owed to Y (or any Affiliate of Y) (whether or not matured or
contingent and whether or not arising under the Agreement, and regardless of the currency, place of payment or booking office of the obligation) against any obligation of Y (or any Affiliate of Y) owed to X (whether or not matured or contingent and
whether or not arising under the Agreement, and regardless of the currency, place of payment or booking office of the obligation). Y will give notice to the other party of any set-off effected under this Section 6(f). 
 Amounts (or the relevant portion of such amounts) subject to set-off may be converted by Y into the Termination Currency at the rate of exchange at which
such party would be able, acting in a reasonable manner and in good faith, to purchase the relevant amount of such currency. If any obligation is unascertained, Y may in good faith estimate that obligation and set-off in respect of the estimate,
subject to the relevant party accounting to the other when the obligation is ascertained. Nothing in this Section 6(f) shall be effective to create a charge or other security interest. This Section 6(f) shall be without prejudice and in
addition to any right of set-off, combination of accounts, lien or other right to which any party is at any time otherwise entitled (whether by operation of law, contract or otherwise).” 
 (c) Notwithstanding anything to the contrary in the foregoing, GS&Co. agrees not to set off or net amounts due from Counterparty with respect to any
Transaction against amounts due from GS&Co. to Counterparty under obligations other than Equity Contracts. “Equity Contract” means any transaction relating to Shares between the parties (or any of their affiliates) that
qualifies as ‘equity’ under applicable accounting rules. 
 15. Payment Date Upon Early Termination. Notwithstanding
anything to the contrary in Section 6(d)(ii) of the Agreement, all amounts calculated as being due in respect of an Early Termination Date under Section 6(e) of the Agreement will be payable on the day that notice of the amount payable is
effective. 
 16. Credit Support Documents. The parties hereto acknowledge that no Transaction hereunder is secured by any collateral
that would otherwise secure the obligations of Counterparty herein or pursuant to the Agreement. 
 17. Claim in Bankruptcy.
GS&Co. agrees that in the event of the bankruptcy of Counterparty, GS&Co. shall not have rights or assert a claim that is senior in priority to the rights and claims available to the shareholders of the common stock of Counterparty.

 18. Offices. 
 (a) The
Office of GS&Co. for each Transaction is: One New York Plaza, New York, New York 10004. 
 (b) The Office of Counterparty for each
Transaction is: 3500 Lyman Boulevard, Chaska, Minnesota 55318. 
 19. Governing Law. The Agreement, this Master Confirmation and each
Supplemental Confirmation and all matters arising in connection with the Agreement, this Master Confirmation and each Supplemental Confirmation shall be governed by, and construed and enforced in accordance with, the laws of the State of New York
(without reference to its choice of laws doctrine). 







 20. Counterparts. This Master Confirmation may be executed in any number of counterparts, all of
which shall constitute one and the same instrument, and any party hereto may execute this Master Confirmation by signing and delivering one or more counterparts. 
 21. Arbitration. 
 (a) All parties to this Confirmation are giving up the right to sue each
other in court, including the right to a trial by jury, except as provided by the rules of the arbitration forum in which a claim is filed. 
 (b) Arbitration awards are generally final and binding; a party’s ability to have a court reverse or modify an arbitration award is very limited. 
 (c) The ability of the parties to obtain documents, witness statements and other discovery is generally more limited in arbitration than in court proceedings. 
 (d) The arbitrators do not have to explain the reason(s) for their award. 
 (e) The panel of arbitrators will typically include a minority of arbitrators who were or are affiliated with the securities industry, unless
Counterparty is a member of the organization sponsoring the arbitration facility, in which case all arbitrators may be affiliated with the securities industry. 
 (f) The rules of some arbitration forums may impose time limits for bringing a claim in arbitration. In some cases, a claim that is ineligible for arbitration may be brought in court. 
 (g) The rules of the arbitration forum in which the claim is filed, and any amendments thereto, shall be incorporated into this Confirmation.

 (h) Counterparty agrees that any and all controversies that may arise between Counterparty and GS & Co., including, but
not limited to, those arising out of or relating to the Agreement or any Transaction hereunder, shall be determined by arbitration conducted before The New York Stock Exchange, Inc. (“NYSE”) or NASD Dispute Resolution
(“NASD-DR”), or, if the NYSE and NASD-DR decline to hear the matter, before the American Arbitration Association, in accordance with their arbitration rules then in force. The award of the arbitrator shall be final, and judgment upon the
award rendered may be entered in any court, state or federal, having jurisdiction. 
 (i) No person shall bring a putative or
certified class action to arbitration, nor seek to enforce any pre-dispute arbitration agreement against any person who has initiated in court a putative class action or who is a member of a putative class who has not opted out of the class with
respect to any claims encompassed by the putative class action until: (i) the class certification is denied; (ii) the class is decertified; or (iii) Counterparty is excluded from the class by the court. 
 (j) Such forbearance to enforce an agreement to arbitrate shall not constitute a waiver of any rights under this Confirmation except to the extent
stated herein. 







 22. Counterparty hereby agrees (a) to check this Master Confirmation carefully and immediately upon
receipt so that errors or discrepancies can be promptly identified and rectified and (b) to confirm that the foregoing (in the exact form provided by GS&Co.) correctly sets forth the terms of the agreement between GS&Co. and
Counterparty with respect to any Transaction, by manually signing this Master Confirmation or this page hereof as evidence of agreement to such terms and providing the other information requested herein and immediately returning an executed copy to
Equity Derivatives Documentation Department, facsimile No. 212-428-1980/83. 
  

			
	Yours sincerely,
	
	GOLDMAN, SACHS & CO.
	
	 /s/ Conrad Langenegger

	Name:	 	Conrad Langenegger
	Title:	 	Vice President


 Agreed and Accepted By: 
  

			
	ENTEGRIS, INC.
		
	By:	 	 /s/ Gideon Argov

	Name:	 	Gideon Argov
	Title:	 	President