Document:

Amendment #1 to Credit Agreement

 Exhibit 10.15B 
 EXECUTION COPY 
 AMENDMENT NO. 1 TO CREDIT AGREEMENT 

This Amendment No. 1 to Credit Agreement dated as of November 28, 2011 (this “Amendment”) is entered into
among Einstein Noah Restaurant Group, Inc., a Delaware corporation (the “Borrower”), each other Loan Party (as defined in the Credit Agreement referred to below) party hereto, each Lender (as defined in the Credit Agreement referred
to below) party hereto and Bank of America, N.A., as administrative agent (the “Administrative Agent”) for the Lenders. Capitalized terms used herein but not defined herein shall have the meanings provided in the Credit Agreement.

 W I T N E S S E T H: 
 WHEREAS, the Borrower, the other Loan Parties, the Lenders and the Administrative Agent are parties to that certain Credit Agreement dated as of December 20, 2010 (as amended, restated, supplemented
or otherwise modified from time to time, the “Credit Agreement”); and 
 WHEREAS, the Loan Parties, the
Administrative Agent and the Lenders have agreed to amend certain provisions of the Credit Agreement on the terms and conditions hereafter set forth. 
 NOW, THEREFORE, in consideration of the premises and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto hereby agree as follows:

 SECTION 1. Amendments. As of the Effective Date, the Credit Agreement is hereby amended as follows: 

(a) Section 1.01 of the Credit Agreement is hereby amended by deleting clause (b)(vi) of the definition of “Excess Cash
Flow” and substituting in lieu thereof the following new clause (b)(vi): 
 “(vi) the amount of all
cash paid by the Borrower and its Domestic Subsidiaries to fund any transaction permitted hereunder (including, without limitation, Capital Expenditures permitted by Section 7.12 and Investments permitted by Section 7.03),
but excluding transactions permitted by Sections 7.06(c), 7.06(d) and 7.06(e).” 
 (b)
Section 1.01 of the Credit Agreement is hereby amended by deleting the definition “Excess Revolving Availability” contained therein and substituting in lieu thereof the following definition: 

““Excess Revolving Availability” means, as of any date of determination, the amount by which
(a) the Revolving Credit Facility exceeds (b) the Total Revolving Credit Outstandings.” 
 (c)
Section 1.01 of the Credit Agreement is hereby amended by deleting the definition “Subsidiary” contained therein and substituting in lieu thereof the following definition: 

““Subsidiary” of a Person means a corporation, partnership, joint venture, limited liability company
or other business entity of which a majority of the shares of securities or other interests having ordinary voting power for the election of directors or other governing body (other than securities or interests having such power only by reason of
the happening of a contingency) are at the time beneficially owned, or the management of which is otherwise controlled, directly, or 

 
indirectly through one or more intermediaries, or both, by such Person. Unless otherwise specified, all references herein to a “Subsidiary” or to “Subsidiaries” shall refer to
a Subsidiary or Subsidiaries of the Borrower. Notwithstanding the foregoing, no joint venture engaged primarily in the manufacturing or commissary businesses that is created in connection with a Disposition permitted under
Section 7.05(l) shall be a “Subsidiary” of the Borrower or any other Loan Party hereunder (it being understood and agreed that the Loan Parties’ Equity Interests in such joint venture shall be pledged to the Administrative
Agent to secure payment of all the Obligations).” 
 (d) Section 2.05(b) of the Credit Agreement is hereby
amended by (1) renumbering the second clause “(i)” contained therein as clause “(ii)”, (2) renumbering clause “(ii)” contained therein as clause “(iii)”, (3) renumbering clause “(iii)”
contained therein as clause “(iv)”, (4) renumbering clause “(iv)” contained therein as clause “(v)”, (5) renumbering clause “(v)” contained therein as clause “(vi)”, (6) renumbering
clause “(vi)” contained therein as clause “(vii)”, and (7) renumbering clause “(vii)” contained therein as clause “(viii)”. 
 (e) Section 7.03(g) of the Credit Agreement is hereby amended by adding the following text at the beginning of clause (vi)(A) therein: 

“for each purchase or other acquisition with aggregate purchase consideration of greater than $2,000,000,”.

 (f) Section 7.03(g) of the Credit Agreement is hereby amended by (1) deleting the phrase “an
“Einstein Bros Bagels,” “Manhattan Bagel” or “Noah’s Bagel” concept” and substituting therefor the phrase “bagel or café concept”, and (2) adding the following text at the beginning of
clause (ix) therein: 
 “for each purchase or other acquisition with aggregate purchase consideration
of greater than $2,000,000,”. 
 (g) Section 7.03(n) of the Credit Agreement is hereby amended by deleting such
clause and substituting in lieu thereof the following clause (n): 
 “(n) loans to franchisees and area
developers of brands or concepts owned or operated by any Loan Party or its Subsidiaries, in an amount not to exceed $4,000,000 in the aggregate at any time; and” 
 (h) Section 7.05 of the Credit Agreement is hereby amended by (1) deleting the “and” at the end of clause (j) therein, (2) deleting the “.” at the end of
clause (k) therein and substituting in lieu thereof “; and”, (3) adding the phrase “or clause (l) below” after the phrase “clauses (a)-(j) above” contained in clause (k) therein, and
(4) adding the following new clause (l) therein: 
 “(l) Dispositions of property by the Borrower
or any Domestic Subsidiary consisting solely of one or more manufacturing or commissary businesses or divisions, which are owned by such Person as of November 28, 2011.” 

(i) Section 7.05 of the Credit Agreement is hereby amended by deleting the parenthetical contained in clause (y) of the
last paragraph thereof and substituting in lieu thereof the following parenthetical: 
 “(other than clauses
(d) and (l))”. 

  
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 (j) Section 7.07 of the Credit Agreement is hereby amended by deleting the last
sentence thereof and substituting in lieu thereof the following sentence: 
 “Own, operate or franchise any
restaurant concept other than a bagel or café restaurant concept.” 
 SECTION 2. Condition Precedent; Effective
Date. The effective date of this Amendment shall be the date first set forth above (the “Effective Date”); provided that it shall be a condition to the effectiveness of this Amendment that the Administrative Agent shall
have received (which receipt may be by facsimile or other electronic transmission) on or before the Effective Date, counterparts of this Amendment, executed by the Loan Parties and the Required Lenders. 

SECTION 3. Loan Party Representations and Warranties. Each Loan Party hereby represents and warrants that (a) this Amendment
constitutes its legal, valid and binding obligation, enforceable against such Loan Party in accordance with the terms hereof, (b) after giving effect to this Amendment, (i) the representations and warranties contained in the Credit
Agreement are correct in all material respects as though made on and as of the date of this Amendment, except to the extent that any such representation or warranty specifically refers to an earlier date, in which case such representation or
warranty was true and correct as of such earlier date, and (ii) no Default or Event of Default has occurred and is continuing. 
 SECTION 4. Affirmation and Acknowledgment. Each Loan Party hereby ratifies and confirms all of its Obligations to the Administrative Agent and the Lenders under the Credit Agreement and the other
Loan Documents, as amended hereby. Each Loan Party hereby confirms that the Obligations are and remain secured pursuant to the Collateral Documents. 
 SECTION 5. Reference to and Effect on the Credit Agreement. 
 5.1 Upon the
effectiveness of this Amendment, each reference in the Credit Agreement to “this Agreement”, “hereunder”, “hereof”, “herein”, or words of like import shall mean and be a reference to the Credit Agreement, as
modified hereby, and each reference to the Credit Agreement in any other document, instrument or agreement executed and/or delivered in connection with the Credit Agreement shall mean and be a reference to the Credit Agreement, as modified hereby.

 5.2 Except as specifically set forth in Section 1 hereof, the Credit Agreement and all other Loan Documents shall
remain in full force and effect and are hereby ratified and confirmed. 
 SECTION 6. Expenses. The Loan Parties agree to
pay to the Administrative Agent upon demand therefor an amount equal to any and all reasonable out-of-pocket costs, expenses, and liabilities incurred or sustained by the Administrative Agent in connection with the preparation of this Amendment
(including, without limitation, reasonable fees and expenses of legal counsel). Amounts payable pursuant to this Section 6 shall be subject to the provisions of Section 10.04(a) of the Credit Agreement, as fully as if set
forth therein. 
 SECTION 7. Execution in Counterparts. This Amendment may be executed in any number of counterparts and
by different parties hereto in separate counterparts, each of which when so executed and delivered shall be deemed to be an original and all of which taken together shall constitute but one and the same instrument. Delivery of an executed
counterpart of a signature page of this Amendment by facsimile or other electronic methods shall be effective as delivery of a manually executed counterpart of this Amendment. 

  
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 SECTION 8. Governing Law. This Amendment shall be governed by and construed in
accordance with the internal laws (as opposed to the conflicts of laws provisions) of the State of New York. 
 SECTION 9.
Section Titles. The section titles contained in this Amendment are and shall be without substance, meaning or content of any kind whatsoever and are not a part of the agreement between the parties hereto. 

(Signature pages follow) 

  
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 IN WITNESS WHEREOF, the parties hereto have caused this Amendment No. 1 to Credit
Agreement to be duly executed and delivered as of the date first above written. 
  

			
	The Borrower:
	
	EINSTEIN NOAH RESTAURANT GROUP, INC.
		
	By:	 	 /s/ Emanuel P.N. Hilario

		 	Name: Emanuel P.N. Hilario
		 	Title: Chief Financial Officer

			
	The Guarantors:
	
	EINSTEIN AND NOAH CORP.
		
	By:	 	 /s/ Emanuel P.N. Hilario

		 	Name: Emanuel P.N. Hilario
		 	Title: Treasurer
	
	EINSTEIN/NOAH BAGEL PARTNERS, INC.
		
	By:	 	 /s/ Emanuel P.N. Hilario

		 	Name: Emanuel P.N. Hilario
		 	Title: Treasurer
	
	CHESAPEAKE BAGEL FRANCHISE CORP.
		
	By:	 	 /s/ Emanuel P.N. Hilario

		 	Name: Emanuel P.N. Hilario
		 	Title: Treasurer
	
	I. & J. BAGEL, INC.
		
	By:	 	 /s/ Emanuel P.N. Hilario

		 	Name: Emanuel P.N. Hilario
		 	Title: Treasurer
	
	MANHATTAN BAGEL COMPANY, INC.
		
	By:	 	 /s/ Emanuel P.N. Hilario

		 	Name: Emanuel P.N. Hilario
		 	Title: Treasurer

  
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	The Administrative Agent:
	
	BANK OF AMERICA, N.A., as
	Administrative Agent
		
	By:	 	 /s/ Kelly Weaver

		 	Name: Kelly Weaver
		 	Title: Assistant Vice President

  
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	The Lenders:
	
	BANK OF AMERICA, N.A., as a Lender, L/C Issuer and Swing Line Lender
		
	By:	 	 /s/ John H. Schmidt

		 	Name: John H. Schmidt
		 	Title: Director

  
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	WELLS FARGO BANK, NATIONAL ASSOCIATION, as a Lender
		
	By:	 	 /s/ Andrew Hessick

		 	Name: Andrew Hessick
		 	Title: Vice President
	
	REGIONS BANK, as a Lender
		
	By:	 	 /s/ Daniel R. Holland

		 	Name: Daniel R. Holland
		 	Title: Managing Director
	
	COMPASS BANK, AN ALABAMA BANKING CORPORATION, as a Lender
		
	By:	 	 /s/ Joseph W. Nimmons

		 	Name: Joseph W. Nimmons
		 	Title: Vice President
	
	BANK OF THE WEST, as a Lender
		
	By:	 	 /s/ Terry A. Switz, Jr.

		 	Name: Terry A. Switz, Jr.
		 	Title: V.P.
	
	1ST FARM CREDIT SERVICES, PCA as a Lender
		
	By:	 	 /s/ Corey J. Waldinger

		 	Name: Corey J. Waldinger
		 	Title: Vice President, Capital Markets

  
 5Agreement and Second Amendment to Second Amended and Restated Credit Agreement

 Exhibit 10.1 
 AGREEMENT AND SECOND AMENDMENT 
 TO SECOND AMENDED 

AND RESTATED CREDIT AGREEMENT 
 THIS AGREEMENT AND SECOND AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT (this “Amendment”), dated effective as of February 27, 2012, is made and entered into by
and among LUFKIN INDUSTRIES, INC., a Texas corporation (“Lufkin”); LUFKIN FINANCE (US) LP, a Texas limited partnership (“Lufkin Finance”); the Lenders signing below; and JPMORGAN CHASE BANK, N.A.
(“JPMCB”), as a Lender, as the Issuing Bank, and as the Administrative Agent under the Credit Agreement referred to below (JPMCB, in such capacity, the “Agent”). Lufkin, Lufkin Finance, such Lenders and the
Agent are herein sometimes collectively called the “Parties.” 
 Preliminary Statements 

1. Lufkin, Lufkin Finance, certain financial institutions as lenders, the Agent, and JPMCB as a Lender and as Issuing Bank entered into a
Second Amended and Restated Credit Agreement dated as of November 30, 2011 (the “2011 Credit Agreement”). 

2. Effective December 5, 2011, Lufkin, Lufkin Finance, certain financial institutions as lenders, the Agent and JPMCB as a Lender
and as the Issuing Bank entered into an Agreement and First Amendment to Second Amended and Restated Credit Agreement (the “First Amendment”). 
 3. The 2011 Credit Agreement, as amended by the First Amendment, is herein called the “Credit Agreement”. 
 4. The Parties wish to amend further the Credit Agreement, all as more fully hereinafter set forth. 
 Agreements 
 NOW, THEREFORE, in consideration of the premises and for other
good and valuable consideration, the receipt and sufficiency of which are acknowledged by the Parties, the Parties agree as follows: 
  

	 	1.	Amendment of Section 1.01. 

 A. There are hereby added to Section 1.01 of the 2011 Credit Agreement the following definitions: 
 “Second Amendment” means the Agreement and Second Amendment to Second Amended and Restated Credit Agreement dated February 27, 2012 among the Borrowers, the Lenders, the
Administrative Agent and the Issuing Bank. 

 “Short-Term Liquidity Facility” means a credit facility providing for term
loans to Lufkin in an aggregate amount not to exceed $25,000,000 and with a maturity of not more than 120 days. 

“Short-Term Liquidity Loans” means any loans under the Short-Term Liquidity Facility.” 

“Zenith” means Zenith Oilfield Technology Ltd., headquartered in Aberdeenshire, Scotland. 

B. The following definitions in Section 1.01 of the Credit Agreement are amended to provide as follows: 

“Net Cash Proceeds” means (a) in connection with any Asset Sale, any settlement of or payment in respect of any
property or casualty insurance claim or any condemnation proceeding (or proceeding in lieu thereof) relating to any asset of Lufkin or its consolidated Subsidiaries, the proceeds thereof (including any proceeds received by way of deferred payment of
principal pursuant to a note or installment receivable or purchase price adjustment receivable or otherwise, but only as and when received), net of (i) amounts required to be applied to the repayment of Indebtedness secured by a Lien expressly
permitted hereunder on any asset which is the subject of such sale or such settlement or payment; (ii) amounts paid in relation to attorneys’ fees, accountants’ fees, investment banking fees, or other customary fees and expenses
actually incurred in connection therewith and filing fees and stamp taxes; and (iii) taxes paid or reasonably estimated to be payable as a result thereof (after taking into account any available tax credits or deductions and any tax sharing
arrangements); provided that evidence of each of (i), (ii) and (iii) is provided to the Administrative Agent in form and substance reasonably satisfactory to it, and (b) in connection with any issuance or sale of any debt
securities or instruments or any Equity Interests or the incurrence of any loans by Lufkin or its consolidated Subsidiaries, the cash proceeds received from such issuance, sale or incurrence, net of attorneys’ fees, investment banking fees,
accountants’ fees, underwriting discounts and commissions and other customary fees and expenses actually incurred in connection therewith. 
 “Pledged Collateral” has the meaning set forth in the Pledge Agreement and shall in any event include (a) 100% of the total Equity Interest of each Material Domestic Subsidiary and
(b) 65% of the total Equity Interest in any First-Tier Foreign Subsidiary; and, after completion of the post-closing obligations in Section 5.15, Lufkin Romania and each other First-Tier Foreign Subsidiary. 

 2. Amendment of Section 2.12. Section 2.12 of the Credit Agreement
is hereby amended to provide in its entirety as follows: 
 “SECTION 2.12 Mandatory Prepayments.

 A. At all such times as the Short-Term Liquidity Facility exists and Short Term Facility Loans are outstanding, all Net Cash
Proceeds of all issuances of equity or debt securities by Lufkin or any consolidated Subsidiary shall be applied upon receipt by Lufkin or such consolidated Subsidiary in the following order: 

First, to repay Short-Term Liquidity Loans and all other Obligations, if any, in connection with the Short-Term Liquidity Facility;

 Second, to repay the unpaid principal balance of the Revolving Loans; and 

Third, an amount equal to fifty percent (50%) of all remaining Net Cash Proceeds shall be applied to prepay the Term Loans
pro rata according to their respective outstanding principal amounts, such payments to be applied to the Term Loans in inverse order of their maturity. 
 B. At all such times as the Short-Term Liquidity Facility exists but no Short-Term Facility Loans are outstanding, for the first issuance of debt or equity securities, all Net Cash Proceeds of such
issuance by Lufkin or any consolidated Subsidiary shall be applied upon receipt by Lufkin or such consolidated Subsidiary in the following order: 
 First, to repay the unpaid principal balance of the Revolving Loans; and 

Second, an amount equal to fifty percent (50%) of all remaining Net Cash Proceeds shall be applied to prepay the Term Loans
pro rata according to their respective outstanding principal amounts, such payments to be applied to the Term Loans in inverse order of their maturity. 
 C. At all other times: 
 (a) If at any time the aggregate of the Revolving Credit
Exposures exceeds the total of the Revolving Commitments, Lufkin shall immediately pay to the Administrative Agent for the benefit of the Revolving Lenders the principal amount of any Revolving Loans and Swingline Loans then outstanding to the
extent that (a) the aggregate Revolving Credit Exposures at such time exceed (b) the total of the Revolving Commitments at such time. Accrued and unpaid interest on the amount of the Loans so prepaid shall be due and payable at the time of
such prepayment. If no Revolving Borrowings are outstanding and only LC Exposures remain, Lufkin shall deposit Cash Collateral in an account with the Administrative Agent pursuant to Section 7.02 in an aggregate amount equal to such
excess. 
 (b) On or before each date which is three Business Days after the earlier of (i) the date on which the financial
statements of the Borrower referred to in Section 5.01(a) or Section 5.01(b) for the fiscal quarter of the Borrower with respect to which such prepayment is made are required to be delivered to the Administrative Agent for
delivery to the Lenders and (ii) the date such financial statements are actually delivered to the Administrative Agent (commencing with the fiscal quarter ending on March 31, 2012), the Term Loans shall be

 
reduced on a pro rata basis according to the outstanding principal balance of the Term Loans by (x) when the most recently determined Leverage Ratio is greater than 2.00 to 1.00, an amount
equal to fifty percent (50%) of Excess Cash Flow for the four consecutive fiscal quarters then most recently ended, and (y) when the most recently determined Leverage Ratio is equal to or less than 2.00 to 1.00 but equal to or greater than
1.50 to 1.00, an amount equal to twenty-five percent (25%) of Excess Cash Flow for the four consecutive fiscal quarters then most recently ended. No prepayment shall be required when the most recently determined Leverage Ratio is less than 1.50
to 1.00. 
 (c) The Term Loans shall be reduced on a pro rata basis according to the outstanding principal balance of the Term
Loans by: 
 (i) an amount equal to 100% of the Net Cash Proceeds of all Asset Sales received by a Borrower or
any of its consolidated Subsidiaries and not reinvested within 180 days after receipt; and 
 (ii) an amount
equal to 100% of the Net Cash Proceeds in connection with any issuance or sale of debt securities, preferred Equity Interests or instruments or incurrence of loans, in each case by a Borrower or any of its consolidated Subsidiaries, in each case
upon receipt thereof by the applicable Borrower or such consolidated Subsidiary; and 
 (iii) an amount equal to
fifty percent (50%) of the Net Cash Proceeds of all issuances of Equity Interests (other than preferred Equity Interests) by Lufkin or any of its consolidated Subsidiaries; provided, that in the case of such an issuance in connection
with an acquisition by Lufkin or any of its consolidated Subsidiaries of Equity Interests in, or assets of, another Person, prepayment shall be required only of an amount equal to 50% of the Net Cash Proceeds remaining after application of such Net
Cash Proceeds to such acquisition. 
 (d) The Term Loans shall be reduced on a pro rata basis according to the outstanding
principal balance of the Term Loans by an amount equal to 100% of the proceeds of insurance received by either of the Borrowers or any of their respective consolidated Subsidiaries on account of the damage, destruction or loss of any Property and
not reinvested in similar Property within 180 days after receipt. 
 (e) Payments of Term Loans pursuant to clause (b),
(c) or (d) above shall be subject to Section 2.22 and shall be applied to the installments on the Term Loans in inverse order of their maturities.” 

3. Amendment of Subsection 5.14(c). Subsection 5.14(c) of the Credit Agreement is hereby amended to provide in its entirety
as follows: 
 (c) Agreement to Deliver Pledge Agreements. Within (i) thirty (30) Business Days after the
creation or any acquisition by Lufkin or any of its Subsidiaries of a Material Domestic Subsidiary, or after an existing Subsidiary becomes a Material Domestic Subsidiary, 

 
or (ii) one hundred eighty (180) days after the creation or any acquisition by Lufkin or any of its Subsidiaries of a First-Tier Foreign Subsidiary or after an existing Subsidiary
becomes a First-Tier Foreign Subsidiary, Lufkin shall execute and deliver, and cause the owner or owners of all of the Equity Interests (or, in the case of a Material Subsidiary that is a First-Tier Foreign Subsidiary, the owner or owners of not
less than 65% of the Equity Interests) in such Material Subsidiary to execute and deliver, a Pledge Agreement, duly authorized and executed by Lufkin and each such other owner or owners, together with any certificates evidencing such Equity
Interests, and all necessary consents and approvals, to the end that all of the Equity Interests and related Property (or, in the case of a Material Foreign Subsidiary, not less than 65% of the Equity Interests and related Property) in all Material
Subsidiaries (other than Material Subsidiaries that are not First-Tier Foreign Subsidiaries) shall at all times secure all Obligations then or thereafter existing or arising. In connection therewith, Lufkin shall deliver, and shall cause each such
owner or owners and each such Material Subsidiary to deliver, to the Administrative Agent with respect to such Material Subsidiary all of the materials described in clauses (n) and (o) of Section 4.01, evidence
that each Material Domestic Subsidiary executing and delivering a Pledge Agreement pursuant to this Section has received good and adequate consideration for doing so, and all other such agreements, documents, instruments and other writings as may be
necessary or desirable (in the opinion of the Administrative Agent) to create and perfect a valid first Lien on, pledge of and security interest in all such Equity Interests and related property and evidence satisfactory to the Administrative Agent
that the entity granting such security interest has taken all corporate and other organizational action and obtained all consents necessary to approve and authorize its execution and delivery of such Pledge Agreement and the performance of its
obligations thereunder and, if requested by the Administrative Agent, an opinion of counsel in form, scope and substance reasonably acceptable to the Administrative Agent. 
 4. Amendment of Section 6.01. Section 6.01 of the Credit Agreement is hereby amended to add to Section 6.01 the following subsections: 

“(j) other unsecured Indebtedness in an aggregate principal amount not to exceed $250,000,000 at any one time
outstanding and with a maturity no earlier than six months after the Maturity Date; 
 (k) Indebtedness under the
Short-Term Liquidity Facility, not to exceed $25,000,000 in aggregate principal amount; 
 (l) unsecured
Indebtedness of Zenith, not to exceed $20,000,000 (or its currency equivalent) in aggregate principal amount at any one time outstanding; and 
 (m) secured Indebtedness of Zenith not to exceed $2,000,000 (or its currency equivalent) in aggregate principal amount at any one time outstanding.” 

5. Amendment of Section 6.02. Section 6.02 of the Credit Agreement is hereby amended to add to it the following
additional subsection: 
 “(e) Liens on the Collateral securing Indebtedness permitted by
Section 6.01(k) or 6.01(m).” 

 6. Amendment of Section 6.04. Subsection (d) of
Section 6.04 is hereby amended, new subsections (e), (f), and (g) are added, all as follows: 
 “(d) Investments made by Lufkin in Newco, any Guarantor, or Lufkin Romania; 
 (e) Investments made by Lufkin in any consolidated Subsidiary (other than Newco, any Guarantor, or Lufkin Romania), not to exceed $50,000,000 in the aggregate at any one time outstanding; 

(f) Investments made by Lufkin, directly or through one or more of its consolidated Subsidiaries, in Zenith, not to exceed
88,000,000 GBP (or its currency equivalent) in the aggregate at any one time outstanding; and 
 (g) Investments
made by any consolidated Subsidiary to or in Lufkin, or by any consolidated Subsidiary (other than Newco or a Guarantor) to or in any other consolidated Subsidiary.” 
 Existing subsections (e) and (f) are renumbered as subsections (h) and (i), respectively. 

7. Amendment of Section 7.01. Section 7.01 of the Credit Agreement is hereby amended to add to it the following
subsection: 
 “(w) an Event of Default under the Short-Term Liquidity Facility.” 

8. Amendment of Section 9.04(f). Section 9.04(f) of the Credit Agreement is hereby amended to provide in its
entirety as follows: 
 “(f) Disclosure. Any Lender may, in connection with any assignment or
participation or proposed assignment or participation pursuant to this Section or in connection with the Short-Term Liquidity Facility, disclose to the assignee or participant or proposed assignee or participant or to any lender under the Short-Term
Liquidity Facility or to the assignee or participant or proposed assignee or participant in any Short-Term Liquidity Loan any information relating to either of the Borrowers, any Loan Party, or any Subsidiary of either Borrower; provided that
such assignee or participant or proposed assignee or participant is instructed that its review, copying or retention of such information will act as its agreement to be bound by Section 9.16.” 

 9. Amendment of Section 9.16. Section 9.16 of the Credit Agreement
is hereby amended to provide in its entirety as follows: 
 “SECTION 9.16 Confidentiality. Each of the
Administrative Agent, the Issuing Bank and the Lenders (on behalf of itself and each of its Affiliates) agrees to maintain the confidentiality of the Information (as defined below), except that Information may be disclosed (a) to its and its
Affiliates’ directors, officers, members, managers, employees and agents, including accountants, legal counsel and other advisors (it being understood that the Persons to whom such disclosure is made will be informed of the confidential nature
of such Information and instructed to keep such Information confidential), (b) to the extent requested by any regulatory authority, (c) to the extent required by applicable laws or regulations or by any subpoena or similar legal process,
(d) to any other party to this Agreement, (e) to any lender under the Short-Term Liquidity and its and its Affiliates’ directors, officers, members, managers, employees and agents, including accountants, legal counsel and other
advisors (it being understood that the Persons to whom such disclosure is made will be informed of the confidential nature of such Information and instructed to keep such Information confidential), (f) in connection with the exercise of any
remedies hereunder or any suit, action or proceeding relating to this Agreement or any other Loan Document or the Short-Term Liquidity Facility or the enforcement of rights hereunder or thereunder, (g) subject to an agreement containing
provisions substantially the same as those of this Section, to (i) any assignee of or Participant in, or any prospective assignee of or Participant in, any of its rights or obligations under this Agreement or under the Short-Term Liquidity
Facility or (ii) any actual or prospective counterparty (or its advisors) to any swap or derivative transaction relating to either Borrower and its obligations, (h) with the consent of Lufkin, or (i) to the extent such Information
(i) becomes publicly available other than as a result of a breach of this Section or (ii) becomes available to the Administrative Agent, the Issuing Bank or any Lender or any lender under the Short-Term Liquidity Facility on a
nonconfidential basis from a source other than the Borrowers. For the purposes of this Section, “Information” means all information received from either of the Borrowers or any of their respective Subsidiaries relating to either of
the Borrowers or any of their respective Subsidiaries or any Loan Party or any of their respective businesses, other than any such information that is available to the Administrative Agent, the Issuing Bank, any Lender or any lender under the
Short-Term Liquidity Facility on a nonconfidential basis prior to disclosure by either of the Borrowers; provided that, in the case of information received from either of the Borrowers, any of their respective Subsidiaries or any Loan Party
after the date hereof, such information is clearly identified in writing at the time of delivery as confidential. Any Person required to maintain the confidentiality of Information as provided in this Section shall be considered to have complied
with its obligation to do so if such Person has exercised the same degree of care to maintain the confidentiality of such Information as such Person would accord to its own confidential information. 

Notwithstanding the foregoing, the Administrative Agent may provide information relating to the Loans to Gold Sheets, and other
similar bank trade publications, with such information to consist of deal terms consisting of (i) the Borrowers’ names, (ii) principal loan amounts, (iii) interest rate, (iv) term length and (v) the Unused Commitment
Fee Rate and other fees to the Lenders in the syndicate, the identity of their attorneys and other information customarily found in such publications.” 

 10. Conditions Precedent. This Amendment shall be effective as of the date set
forth above, subject to the receipt by the Agent of 
 (a) counterparts of this Amendment, duly executed by each
of the Parties; 
 (b) confirmation by Lufkin, Lufkin Finance and each of the other Guarantors and Loan Parties,
in form and substance satisfactory to the Agent, of the continuing validity, enforceability and effectiveness of each of the Guaranty Agreement, the Lufkin Guaranty, the Assumption Agreement, and each Security Document, all notwithstanding the
adoption of this Amendment; 
 (c) a favorable written opinion (addressed to the Agent and the Lenders) of
Andrews Kurth LLP, counsel for Lufkin, in form and substance satisfactory to the Agent and its counsel and covering such matters relating to the Borrowers, the other Loan Parties, the Credit Agreement, the other Loan Documents, or the Transactions
as the Agent shall reasonably request; 
 (d) such documents, resolutions, and certificates as the Administrative
Agent may reasonably request relating to the organization, existence and good standing of each Borrower and each other Loan Party, the authorization of the transactions described in this Amendment by each Borrower and each other Loan Party, and any
other legal matters relating to the Borrower or any other Loan Party, this Amendment or the transactions described in it, all in form and substance satisfactory to the Administrative Agent; and 

(e) a certificate in respect of the name and signature of each officer of such Borrower and of each other Loan Party who
is authorized to sign on its behalf this Amendment and any related Loan Document to which such Borrower or such Loan Party is a party. 
 11. Representations True; No Default. Lufkin and Lufkin Finance jointly and severally represent and warrant to the Lenders and the Agent that 

(a) the representations and warranties contained in the Credit Agreement are true and correct on and as of the date of this Amendment as
though made on and as of such date (except to the extent such representations and warranties expressly relate solely to an earlier date); 
 (b) no event has occurred and is continuing which constitutes a Default under the Credit Agreement; and 

 (c) this Amendment has been duly executed and delivered by Lufkin and Lufkin Finance and
constitutes the legal, valid and binding obligations of Lufkin and Lufkin Finance, respectively, enforceable against Lufkin and Lufkin Finance in accordance with its terms, subject to applicable bankruptcy, insolvency, reorganization, moratorium or
other laws affecting creditors’ rights generally and subject to general principles of equity, regardless of whether considered in a proceeding in equity or at law. 
 12. Ratification. Except as expressly amended hereby, the Credit Agreement, as hereby amended, and the other Loan Documents are in all respects ratified and confirmed as the legal, valid and
binding obligations of Lufkin and Lufkin Finance and are, and shall continue to be, in full force and effect. Lufkin and Lufkin Finance hereby agree with the Lenders and the Agent, and acknowledge to the Lenders and the Agent, that all of the
respective liabilities and obligations of Lufkin and Lufkin Finance and each of the other Loan Parties under the Credit Agreement and the other Loan Documents remain in full force and effect as of the date of this Amendment and after giving effect
to it. 
 13. Definitions and References. Unless otherwise defined herein, terms used herein which are defined in
the Credit Agreement shall have the meanings therein ascribed to them. The term “Agreement” as used in the Credit Agreement and the term “Credit Agreement” as used in the other Loan Documents or any other instrument, document or
writing furnished to the Agent, the Issuing Bank or any Lender by or on behalf of Lufkin, Lufkin Finance or any Subsidiary shall mean the Credit Agreement as hereby amended. 
 14. Expenses; Additional Information. Lufkin shall pay to the Agent on demand all expenses (including reasonable counsel’s fees) incurred in connection with the preparation,
reproduction, execution and delivery of this Amendment. 
 15. Severability. If any term or provision of this
Amendment or the application thereof to any person or circumstances shall, to any extent, be deemed invalid or unenforceable, the remainder of this Amendment, or the application of such term or provision to persons or circumstances other than those
as to which it is held invalid or unenforceable, shall not be affected thereby and this Amendment shall be valid and enforced to the fullest extent permitted by applicable law. Any provision of this Amendment that is prohibited or unenforceable in
any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such prohibition or unenforceability without invalidating the remaining portions thereof or affecting the validity or enforceability of such provision in any other
jurisdiction and, to this end, the provisions of this Amendment are severable. 
 16. Miscellaneous. This
Amendment (a) shall be binding upon and inure to the benefit of the Parties, the other Lenders (if any) and their respective successors, assigns, receivers and trustees; (b) may be modified or amended only in accordance with the Credit
Agreement; (c) SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK AND OF THE UNITED STATES OF AMERICA; (d) may be executed and delivered by facsimile or other electronic transmission (such as
..pdf) and may be executed in several counterparts, and by the Parties on 

 
separate counterparts, and each counterpart, when so executed and delivered, shall constitute an original agreement, and all such separate counterparts shall constitute but one and the same
agreement, (e) embodies the entire agreement and understanding among the Parties with respect to the subject matter hereof and supersedes all prior agreements, consents and understandings relating to such subject matter, and (f) is a Loan
Document. The headings herein shall be accorded no significance in interpreting this Amendment. 

 IN WITNESS WHEREOF, the Parties have caused this Amendment to be executed by their
respective duly authorized officers effective as of the date written above. 
  

					
	LUFKIN INDUSTRIES, INC., a Texas corporation
		
	By:	 	 /s/ Christopher L. Boone

		 	Christopher L. Boone
		 	Chief Financial Officer and Vice President
	
	LUFKIN FINANCE (US) LP, a Texas limited partnership
		
	By:	 	Lufkin Finance II ULC,
		 	 an Alberta unlimited liability corporation,
 its General Partner

			
		 	Name:	 	 /s/ Christopher L. Boone

		 		 	Christopher L. Boone,
		 		 	Vice President

			
	JPMORGAN CHASE BANK, N.A.,
	as a Lender, as Issuing Bank, and as Administrative Agent under the Credit Agreement
		
	By:	 	 /s/ Sallye Cielencki

	Name:	 	 Sallye Cielencki

	Title:	 	 VP / Underwriting

 Lufkin Industries Agreement and Second Amendment to 
 Second Amended And Restated Credit Agreement 
 Signature page for Lender, Issuing Bank,
and Administrative Agent 

			
	 Lender and Co-Syndication Agent:

 
 BANK OF AMERICA, N.A.

		
	By:	 	 /s/ Charles Dale

	Name:	 	 Charles Dale

	Title:	 	 SVP

 Lufkin Industries Agreement and Second Amendment to 
 Second Amended And Restated Credit Agreement 
 Signature page for Lender and
Co-Syndication Agent 

			
	 Lender and Co-Syndication Agent:

 
 WELLS FARGO BANK, N.A.

		
	By:	 	 /s/ J. C. Hernandez

	Name:	 	 J.C. Hernandez

	Title:	 	 Director

 Lufkin Industries Agreement and Second Amendment to 
 Second Amended And Restated Credit Agreement 
 Signature page for Lender and
Co-Syndication Agent 

			
	 Lender and Documentation Agent:

 
 REGIONS BANK

		
	By:	 	 /s/ Michael Foster

	Name:	 	 Michael Foster

	Title:	 	 Vice President

 Lufkin Industries Agreement and Second Amendment to 
 Second Amended And Restated Credit Agreement 
 Signature page for Lender and
Documentation Agent 

			
	 Lender:
  

HSBC BANK USA, N.A.

		
	By:	 	 /s/ Ryan Smith

	Name:	 	 Ryan Smith

	Title:	 	 Vice President

 Lufkin Industries Agreement and Second Amendment to 
 Second Amended And Restated Credit Agreement 
 Signature page for Lender 

			
	 Lender:
  

THE BANK OF NOVA SCOTIA

		
	By:	 	 /s/ John Frazell

	Name:	 	 John Frazell

	Title:	 	 Director

 Lufkin Industries Agreement and Second Amendment to 
 Second Amended And Restated Credit Agreement 
 Signature page for Lender 

			
	 Lender:
  

WHITNEY BANK

		
	By:	 	  

	Name:	 	  

	Title:	 	  

 Lufkin Industries Agreement and Second Amendment to 
 Second Amended And Restated Credit Agreement 
 Signature page for Lender 

			
	 Lender:
  

BRANCH BANKING & TRUST COMPANY

		
	By:	 	 /s/ Matt McCain

	Name:	 	 Matt McCain

	Title:	 	 SVP

 Lufkin Industries Agreement and Second Amendment to 
 Second Amended And Restated Credit Agreement 
 Signature page for Lender 

			
	 Lender:
  

COMPASS BANK

		
	By:	 	 /s/ Collis Sanders

	Name:	 	 Collis Sanders

	Title:	 	 Executive Vice President

 Lufkin Industries Agreement and Second Amendment to 
 Second Amended And Restated Credit Agreement 
 Signature page for Lender 

			
	 Lender:
  

CAPITAL ONE, N.A.

		
	By:	 	 /s/ John W. Stam

	Name:	 	 John W. Stam

	Title:	 	 VP

 Lufkin Industries Agreement and Second Amendment to 
 Second Amended And Restated Credit Agreement 
 Signature page for Lender

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