Document:

Amendment No. 4 to Credit Agreement

 Exhibit 4.1 
 FOURTH AMENDMENT TO CREDIT AGREEMENT 
 THIS FOURTH AMENDMENT TO CREDIT AGREEMENT (this
“Amendment”) dated as of the 4th day of December, 2008, by and among CABOT OIL & GAS CORPORATION (“Borrower”), BANK OF AMERICA, N.A., successor to Fleet National Bank, as Administrative Agent, and the Banks party
hereto. 
 WITNESSETH: 
 WHEREAS,
Borrower, Administrative Agent and Banks named therein entered into that certain Credit Agreement dated as of October 28, 2002, amended by that certain First Amendment to Credit Agreement dated December 10, 2004, that certain Second
Amendment to Credit Agreement dated June 18, 2008, and that certain Third Amendment to Credit Agreement dated June 18, 2008 (as amended, the “Original Agreement”) for the purposes and consideration therein expressed; and

 WHEREAS, Borrower, Administrative Agent and Banks desire to amend the Original Agreement for the purposes described herein; 
 NOW, THEREFORE, in consideration of the premises and the mutual covenants and agreements contained herein and in the Original Agreement, and for other
good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto do hereby agree as follows: 
 ARTICLE I. — Definitions and References 
 § 1.1. Terms Defined in the Original Agreement. Unless the context
otherwise requires or unless otherwise expressly defined herein, the terms defined in the Original Agreement shall have the same meanings whenever used in this Amendment. 
 § 1.2. Other Defined Terms. Unless the context otherwise requires, the following terms when used in this Amendment shall have the meanings assigned to them in this § 1.2. 
 “Amendment” means this Fourth Amendment to Credit Agreement. 
 “Credit Agreement” means the Original Agreement as amended hereby. 
 ARTICLE II. — Amendments 
 § 2.1.
Definitions. The following definitions set forth in Section 1.01 of the Original Agreement are hereby amended in their entirety to read as follows: 
 “Base Rate” means, for any day, a rate per annum equal to the sum of (a) the highest of (i) the Prime Rate for
such day, (ii) the sum of 0.50% plus the Federal Funds Rate for such day and (iii) except during a LIBOR Unavailability Period, the London Interbank Offered Rate plus 1% per annum, plus (b) the Market Disruption Spread, if any.
“Prime Rate” means the rate of interest in effect for such day as publicly announced from time to time by the Administrative Agent as its “prime rate.” The “prime rate” is a rate set by the Administrative Agent
based upon various factors including the 

  

					
		  	1	  	Cabot Fourth Amendment

 
Administrative Agent’s costs and desired return, general economic conditions and other factors, and is used as a reference point for pricing some loans,
which may be priced at, above, or below such announced rate. Any change in such rate announced by the Administrative Agent shall take effect at the opening of business on the day specified in the public announcement of such change. 
 “London Interbank Offered Rate” means: 
 (a) For any Interest Period with respect to a Euro-Dollar Loan, the sum of (i) the rate per annum equal to (A) the British
Bankers Association LIBOR Rate (“BBA LIBOR”), as published by Reuters (or other commercially available source providing quotations of BBA LIBOR as designated by the Administrative Agent from time to time), at approximately 11:00
a.m., London time, two Euro-Dollar Business Days prior to the commencement of such Interest Period, for dollar deposits (for delivery on the first day of such Interest Period) with a term equivalent to such Interest Period, or (B) if such
published rate is not available at such time for any reason, then the “London Interbank Offered Rate” for such Interest Period shall be the rate per annum determined by the Administrative Agent to be the rate at which deposits in dollars
for delivery on the first day of such Interest Period in same day funds in the approximate amount of the Euro-Dollar Loan being made, continued or converted by Bank of America, N.A. and with a term equivalent to such Interest Period would be offered
by Bank of America, N.A.’s London Branch to major banks in the London interbank eurodollar market at their request at approximately 11:00 a.m. (London time) two Euro-Dollar Business Days prior to the commencement of such Interest Period and
(ii) the Market Disruption Spread, if any, as of the time of determination. 
 (b) For any interest rate calculation with
respect to a Base Rate Loan, the rate per annum equal to (i) BBA LIBOR, at approximately 11:00 a.m., London time on the date of determination (provided that if such day is not a Euro-Dollar Business Day, the next preceding Euro-Dollar Business
Day) for dollar deposits being delivered in the London interbank market for a term of one month commencing that day or (ii) if such published rate is not available at such time for any reason, the rate determined by the Administrative Agent to
be the rate at which deposits in dollars for delivery on the date of determination in same day funds in the approximate amount of the Base Rate Loan being made by Bank of America, N.A. and with a term equal to one month would be offered by Bank of
America, N.A’s London Branch to major banks in the London interbank eurodollar market at their request at the date and time of determination. 
 In the event that the Board of Governors of the Federal Reserve System shall impose a Euro-Dollar Reserve Percentage with respect to eurodollar deposits of any Bank, then for any period during which such Euro-Dollar
Reserve Percentage shall apply, the London Interbank Offered Rate shall be equal to the amount determined above divided by an amount equal to 1.00 minus the Euro-Dollar Reserve Percentage. The London Interbank Offered Rate for any Euro-Dollar Loan
shall change whenever the Euro-Dollar Reserve Percentage changes. 
  

					
		  	2	  	Cabot Fourth Amendment

 “Pricing Schedule” means (i) with respect to Class A
Commitments and Class A Loans, the Class A Pricing Schedule, and (ii) with respect to Class B Commitments and Class B Loans, the Class B Pricing Schedule. 
 “Required Banks” means at any time Banks more than 50% of the aggregate amount of the Commitments then in effect, or, if
the Commitments shall have been terminated, holding Notes evidencing more than 50% of the aggregate principal amount of the Loans and LC Obligations then outstanding; provided, the unused Commitment of, the principal amount of the Loans by, and the
portion of LC Obligations deemed held by, any Defaulting Bank shall be excluded for purposes of making a determination of Required Banks. 
 “Termination Date” means (i) with respect to Class A Commitments and Class A Loans, the Class A Termination Date, and (ii) with respect to Class B Commitments and Class B
Loans, the Class B Termination Date. 
 Section 1.01 of the Original Agreement is hereby amended by adding the following definitions in
the appropriate alphabetical order, to read as follows: 
 “Class A Bank” means each Bank that is a signatory
to the Fourth Amendment. 
 “Class A Commitment” means the Commitment of each Class A Bank. 

“Class A Loans” means Loans of Class A Banks. 
 “Class A Pricing Schedule” means the “Class A Pricing Schedule” set forth on the Pricing Schedule annexed
hereto denominated as such. 
 “Class A Termination Date” means October 10, 2010; or if such date is not
a Euro-Dollar Business Day, the next preceding Euro-Dollar Business Day. 
 “Class B Bank” means each Bank
that is not a signatory to the Fourth Amendment. 
 “Class B Commitment” means the Commitment of each Class B
Bank. 
 “Class B Loans” means Loans of Class B Banks. 
 “Class B Pricing Schedule” means the “Class B Pricing Schedule” set forth on the Pricing Schedule annexed
hereto denominated as such. 
 “Class B Termination Date” means December 10, 2009; or if such date is
not a Euro-Dollar Business Day, the next preceding Euro-Dollar Business Day. 
 “Defaulting Bank” means any
Bank that (a) has failed to fund any portion of the Loans or participations in LC Obligations required to be funded by it hereunder within one Business Day of the date required to be funded by it hereunder, (b) has otherwise failed to pay
over to the Administrative Agent or any other Bank any other amount required to be paid by it hereunder within one Business Day of the date when due, unless the subject of a good faith dispute, or (c) has been deemed insolvent or become the
subject of a bankruptcy or insolvency proceeding. 
  

					
		  	3	  	Cabot Fourth Amendment

 “Euro-Dollar Unavailability Period” means any period of time during
which a notice delivered to the Borrower in accordance with Section 8.01(a) shall remain in force and effect. 
 “Fourth Amendment” means that certain Fourth Amendment to Credit Agreement dated December 4, 2008 among Borrower, Administrative Agent and the Banks part thereto. 
 “Market Disruption Spread” means zero unless a notice delivered pursuant to Section 8.01(b) is in effect, in which
case, such spread shall be a rate per annum equal to 0.50%. 
 § 2.2. Commitment Fees. The reference to “The Borrower shall
pay to the Admini-strative Agent for the account of each Bank a commitment fee” in the first sentence of Section 2.06 of the Original Agreement is hereby amended to refer instead to “The Borrower shall pay to the Administrative Agent
for the account of each Bank, other than a Defaulting Bank under clause (a) or (c) of the definition thereof, a commitment fee”; and the references to “the date of termination of the Commitments in their entirety” in the
second and third sentences of such Section 2.06 are hereby amended to refer instead to “the Termination Date of the Commitments”. 
 § 2.3. Increase in Aggregate Commitments. The reference to “$350,000,000” set forth in clause (ii) of the first sentence of Section 2.07(a) of the Original Agreement is hereby amended to refer instead to
“$450,000,000”. 
 § 2.4. Letters of Credit. The second sentence of Section 2.16 of the Original Agreement is
hereby amended by adding a proviso at the end thereof, and a new sentence is hereby added immediately thereafter, to read as follows: 
 ;
provided, however, the LC Issuer shall not be under any obligation to issue any Letter of Credit if a default of any Bank’s obligations to fund under Section 2.1 exists or any Bank is at such time a Defaulting Bank or Impacted Bank
hereunder, unless the LC Issuer has entered into arrangements satisfactory to LC Issuer with the Borrower or such Bank to eliminate the LC Issuer’s risk with respect to such Bank. As used herein, “Impacted Bank” means any Bank
as to which (a) the LC Issuer has a good faith belief that such Bank has defaulted in fulfilling its obligations under one or more other syndicated credit facilities or (b) an entity that controls such Bank has been deemed insolvent or
become subject to a bankruptcy or other similar proceeding. 
 § 2.5. Reimbursements and Participations in Letters of Credit.
Section 2.18 of the Original Agreement is hereby amended by adding a new subsection (f) at the end thereof, to read as follows: 
 (f) In the event the Borrower or any Bank shall have made available funds to the LC Issuer as contemplated pursuant to Section 2.16 with respect to the LC Issuer’s risk with respect to any Bank’s
Percentage Share of any Letter of Credit, the LC Issuer 

  

					
		  	4	  	Cabot Fourth Amendment

 
shall be entitled to immediately apply any such funds to such Bank’s Percentage Share of any Matured LC Obligation with respect to such Letter of
Credit, and such funds (and the application thereof) shall not be subject to the provisions of Section 2.10, 2.18(d) or 9.04 hereof. 
 § 2.6. Letter of Credit Fees. Clause (i) of Section 2.19 of the Original Agreement is hereby amended by adding a proviso at the end thereof, to read as follows: 
 provided, no such Letter of Credit fee shall accrue or be deemed to have accrued, or be owing or payable by the Borrower to LC Issuer for the
account of any Bank with respect to such Bank’s Percentage Share of such Letter of Credit in the event the Borrower has entered into an arrangement with LC Issuer with respect to LC Issuer’s risk with respect to such Bank’s obligation
to fund its Percentage Share of Matured LC Obligations with respect to such Letter of Credit as contemplated in Section 2.16 hereof. 
 § 2.7. Electronic Transmission. Section 5.01 of the Original Agreement is hereby amended by adding a new paragraph at the end thereof, to read as follows: 
 Documents required to be delivered pursuant to Section 5.01(a), (b), (e) or (f) (to the extent any such documents are included in materials
otherwise filed with the SEC) may be delivered electronically and if so delivered, shall be deemed to have been delivered on the date (i) on which the Borrower posts such documents, or provides a link thereto on the Borrower’s website on
the Internet at its website as designated by the Borrower to Administrative Agent and Banks; or (ii) on which such documents are posted on the Borrower’s behalf on an Internet or intranet website, if any, to which each Bank and the
Administrative Agent have access (whether a commercial, third-party website or whether sponsored by the Administrative Agent); provided that: (i) the Borrower shall deliver paper copies of such documents to the Administrative Agent or
any Bank that requests the Borrower to deliver such paper copies until a written request to cease delivering paper copies is given by the Administrative Agent or such Bank and (ii) the Borrower shall notify the Administrative Agent and each
Bank (by telecopier or electronic mail) of the posting of any such documents and provide to the Administrative Agent by electronic mail electronic versions (i.e., soft copies) of such documents. Notwithstanding anything contained herein, in
every instance the Borrower shall be required to provide paper copies of the compliance certificates required by Section 5.01(c) to the Administrative Agent. Except for such compliance certificates, the Administrative Agent shall have no
obligation to request the delivery or to maintain copies of the documents referred to above, and in any event shall have no responsibility to monitor compliance by the Borrower with any such request for delivery, and each Bank shall be solely
responsible for requesting delivery to it or maintaining its copies of such documents. 
 The Borrower hereby acknowledges that (a) the
Administrative Agent will make available to the Banks and the LC Issuer materials and/or information provided by or on behalf of the Borrower hereunder (collectively, “Borrower Materials”) by posting the Borrower Materials on
IntraLinks or another similar electronic system (the “Platform”) and (b) certain of the Banks (each, a “Public Bank”) may have personnel who do not wish to receive material non-public information with respect
to the Borrower or its affiliates, or the respective securities of any of the foregoing, and who may be engaged in 

  

					
		  	5	  	Cabot Fourth Amendment

 
investment and other market-related activities with respect to such Persons’ securities. The Borrower hereby agrees that (w) all Borrower Materials
that are to be made available to Public Banks shall be clearly and conspicuously marked “PUBLIC” which, at a minimum, shall mean that the word “PUBLIC” shall appear prominently on the first page thereof; (x) by marking
Borrower Materials “PUBLIC,” the Borrower shall be deemed to have authorized the Administrative Agent, the LC Issuer and the Banks to treat such Borrower Materials as not containing any material non-public information with respect to the
Borrower or its securities for purposes of United States Federal and state securities laws (provided, however, that to the extent such Borrower Materials constitute confidential information, they shall be treated as set forth in
Section 9.11); (y) all Borrower Materials marked “PUBLIC” are permitted to be made available through a portion of the Platform designated “Public Side Information;” and (z) the Administrative Agent shall be
entitled to treat any Borrower Materials that are not marked “PUBLIC” as being suitable only for posting on a portion of the Platform that is not designated “Public Side Information.” 
 § 2.8. Inability to Determine Rates; Market Disruption. Section 8.01 of the Original Agreement is hereby amended in its entirety to read
as follows: 
 Section 8.01. Inability to Determine Rates; Market Disruption. 
 (a) If Banks having at least 50% of the aggregate amount of the Commitments then in effect (or, if the Commitments shall have been
terminated, holding Notes evidencing at least 50% of the aggregate principal amount of the Loans and LC Obligations then outstanding) (as used in this Section 8.01, the “Majority Banks”) determine that for any reason in
connection with any request for a Loan or a conversion to or continuation thereof that (i) dollar deposits are not being offered to banks in the London interbank eurodollar market for the applicable amount and Interest Period of such Loan,
(ii) adequate and reasonable means do not exist for determining the London Interbank Offered Rate for any requested Interest Period with respect to a proposed Euro-Dollar Loan or in connection with a Base Rate Loan, or (iii) the London
Interbank Offered Rate for any requested Interest Period with respect to a proposed Euro-Dollar Loan or in connection with a Base Rate Loan does not adequately and fairly reflect the cost to such Banks of funding such Loan, the Administrative Agent
will promptly so notify the Borrower and each Bank. Thereafter, the obligation of the Banks to make or maintain Euro-Dollar Loans and Base Rate Loans as to which the interest rate is determined with reference to the London Interbank Offered Rate
shall be suspended until the Administrative Agent (upon the instruction of the Majority Banks) revokes such notice. Upon receipt of such notice, the Borrower may revoke any pending request for a Borrowing of, conversion to or continuation of
Euro-Dollar Loans or, failing that, will be deemed to have converted such request into a request for a Borrowing of Base Rate Loans in the amount specified therein. 
 (b) If at any time the Majority Banks determine (which determination shall be conclusive and binding upon the Borrower) that the London
Interbank Offered Rate or the Base Rate, as the case may be, will not adequately and fairly reflect the cost to such Banks (as conclusively certified by such Banks) of making or maintaining their affected Loans, the Administrative Agent shall give
notice thereof to the Borrower and the Banks 

  

					
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as soon as practicable thereafter and, upon delivery of such notice, such notice shall be in effect until the earlier of (i) the thirtieth
(30th) day following such notice and (ii) the date on which Administrative Agent (upon the instruction of the Majority Banks) revokes such notice; provided, upon the expiration of any such thirty (30) day period, the Majority
Banks may pursuant to a reaffirmation of any such determination, extend the effectiveness of such notice for subsequent thirty (30) day periods without limit. 
 § 2.9. Substitution of Defaulting Bank. Section 8.05 of the Original Agreement is hereby amended by adding a new clause (iii) immediately following clause (ii) set forth therein, to read as
follows: 
 or (iii) a Bank is (x) a Defaulting Bank or (y) an Impacted Bank that has failed to enter into an arrangement with
LC Issuer with respect to LC Issuer’s related risk with respect to such Impacted Bank as contemplated in Section 2.09, and as a result of such failure, Borrower has been requested to, or has entered into, such an arrangement with LC Issuer

 § 2.10. Notices; Electronic Transmission. Section 9.01 of the Original Agreement is hereby amended by adding three new
paragraphs at the end thereof, to read as follows: 
 Electronic Communications. Notices and other communications to
the Banks and the LC Issuer hereunder, including Reserve Reports to be delivered pursuant to Section 5.09 hereof, may be delivered or furnished by electronic communication (including e-mail and Internet or intranet websites) pursuant to
procedures approved by the Administrative Agent, provided that the foregoing shall not apply to notices to any Bank or the LC Issuer pursuant to Article II if such Bank or the LC Issuer, as applicable, has notified the Administrative
Agent that it is incapable of receiving notices under such Article by electronic communication. The Administrative Agent or the Borrower may, in its discretion, agree to accept notices and other communications to it hereunder by electronic
communications pursuant to procedures approved by it, provided that approval of such procedures may be limited to particular notices or communications. 
 Unless the Administrative Agent otherwise prescribes, (i) notices and other communications sent to an e-mail address shall be deemed
received upon the sender’s receipt of an acknowledgement from the intended recipient (such as by the “return receipt requested” function, as available, return e-mail or other written acknowledgement), provided that if such
notice or other communication is not sent during the normal business hours of the recipient, such notice or communication shall be deemed to have been sent at the opening of business on the next business day for the recipient, and (ii) notices
or communications posted to an Internet or intranet website shall be deemed received upon the deemed receipt by the intended recipient at its e-mail address as described in the foregoing clause (i) of notification that such notice or
communication is available and identifying the website address therefor. 
 The Platform. THE PLATFORM IS PROVIDED
“AS IS” AND “AS AVAILABLE.” THE AGENT PARTIES (AS DEFINED BELOW) DO NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE BORROWER MATERIALS OR THE ADEQUACY OF THE PLATFORM, AND EXPRESSLY DISCLAIM LIABILITY FOR ERRORS IN OR OMISSIONS
FROM THE 

  

					
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BORROWER MATERIALS. NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
NON-INFRINGEMENT OF THIRD PARTY RIGHTS OR FREEDOM FROM VIRUSES OR OTHER CODE DEFECTS, IS MADE BY ANY AGENT PARTY IN CONNECTION WITH THE BORROWER MATERIALS OR THE PLATFORM. In no event shall the Administrative Agent or any of its affiliates
(collectively, the “Agent Parties”) have any liability to the Borrower, any Bank, the LC Issuer or any other Person for losses, claims, damages, liabilities or expenses of any kind (whether in tort, contract or otherwise) arising
out of the Borrower’s or the Administrative Agent’s transmission of Borrower Materials through the Internet, except to the extent that such losses, claims, damages, liabilities or expenses are determined by a court of competent
jurisdiction by a final and nonappealable judgment to have resulted from the gross negligence or willful misconduct of such Agent Party; provided, however, that in no event shall any Agent Party have any liability to the Borrower, any
Bank, the LC Issuer or any other Person for indirect, special, incidental, consequential or punitive damages (as opposed to direct or actual damages). 
 § 2.11. Pricing Schedule. The Pricing Schedule annexed to the Original Agreement is hereby amended in its entirety to read as set forth on the Pricing Schedule attached hereto. 
 § 2.12. New Debt Limit. Borrower has requested that the Banks redetermine the Debt Limit. Accordingly, pursuant to
Section 5.10(b)(ii)(B) of the Credit Agreement, the Banks hereby approve, and the Administrative Agent hereby designates, a new Debt Limit of $1,200,000,000, effective as of the date hereof and continuing until but not including the next date
as of which the Debt Limit is redetermined. 
 § 2.13. Amendment Fee. The Borrower agrees to pay on the date hereof an amendment
fee to each Bank a party hereto as of the date hereof in the amount of 0.375% of such Bank’s Commitment (payable to the Administrative Agent for the account of such Banks). 
 § 2.14. Differing Termination Dates; Application of Principal Payments. Each Bank a party hereto hereby (a) acknowledges and agrees that
it is a Class A Bank, (b) acknowledges that the Class B Termination Date is prior to the Class A Termination Date, and (c) agrees that, notwithstanding Section 2.10 and Section 9.04 of the Credit Agreement, so long as
no Default has occurred and is continuing, or is caused thereby, any principal payments on the Loans made on the Class B Termination Date shall be applied first, ratably to Class B Loans, and then ratably to Class A Loans.

 ARTICLE III. — Conditions of Effectiveness 
 § 3.1. Effective Date. This Amendment shall become effective upon the satisfaction of all of the following conditions: 
 (a) Administrative Agent shall have received, at Administrative Agent’s office a counterpart of this Amendment executed and delivered by Borrower and Required Banks; 
  

					
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 (b) Administrative Agent shall have received, for the account of Administrative Agent and Banks, all
amendment fees payable to Administrative Agent or any Bank and all other fees, costs and expenses due and payable under the Financing Documents. 
 (c) Administrative Agent shall have additionally received all of the following documents, each document (unless otherwise indicated) being dated the date of receipt thereof by Administrative Agent, duly authorized, executed and delivered,
and in form and substance satisfactory to Administrative Agent: 
 (i) Legal Opinions. An opinion of Baker Botts,
special counsel for the Borrower and an opinion of Lisa A. Machesney, Vice President, Managing Counsel and Corporate Secretary of the Borrower; 
 (ii) Officer’s Certificate. A certificate signed by the chief financial officer, chief accounting officer or treasurer of the Borrower, to the effect set forth in Section 3.02(b), (c) and
(d) of the Credit Agreement; 
 (iii) Corporate Documents. Documents it may reasonably request relating to the
existence of the Borrower, the corporate authority for and the validity of the Financing Documents, and any other matters relevant hereto, all in form and substance satisfactory to the Administrative Agent; and 
 (iv) Supporting Documents. Such supporting documents as Administrative Agent may reasonably request. 
 ARTICLE IV. — Representations and Warranties 
 § 4.1. Representations and Warranties of Borrower. In order to induce Administrative Agent and Banks to enter into this Amendment, Borrower represents and warrants to Administrative Agent and each Bank that: 
 (a) the representations and warranties of the Borrower contained in the Credit Agreement (except the representations and warranties covering historical
information in Sections 4.04(a) and (b) and the first sentence of Section 4.05, and except to the extent the representations and warranties would cover price and other economic assumptions furnished by the Required Banks under
Section 5.09(d)) are be true and correct on and as of the date hereof; 
 (b) no Default has occurred and is continuing; 
 (c) the execution, delivery and performance by the Borrower of this Amendment and each other Financing Document to which it is a party, and by each
Subsidiary Guarantor (if any) of the Financing Documents to which it is a party, are within the Borrower’s and each such Subsidiary Guarantor’s corporate powers, have been duly authorized by all necessary corporate action, require no
action by or in respect of, or filing with, any governmental body, agency or official and do not contravene, or constitute a default under, any provision of applicable law or regulation or of the certificate of incorporation or by-laws of the
Borrower or any such Subsidiary Guarantor or of any agreement or instrument evidencing or governing Debt of the Borrower or any Subsidiary or any other agreement, instrument, judgment, injunction, order or decree binding upon the Borrower or any
Subsidiary or result in the creation or imposition of any Lien on any asset of the Borrower or any Subsidiary Guarantor (if any) pursuant to any such agreement, instrument, judgment, injunction, order or decree; and 
  

					
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 (d) this Amendment constitutes a valid and binding agreement of the Borrower and each of the other
Financing Documents, when executed and delivered in accordance with the Credit Agreement, constitute valid and binding obligations of the Borrower and each Subsidiary Guarantor (if any), to the extent a party thereto, in each case enforceable in
accordance with its terms, except as the same may be limited by bankruptcy, insolvency or similar laws affecting creditors’ rights generally and by general principles of equity. 
 ARTICLE V. — Miscellaneous 
 § 5.1. Ratification of Agreements. The
Original Agreement, as hereby amended, is hereby ratified and confirmed in all respects. The Financing Documents, as they may be amended or affected by this Amendment, are hereby ratified and confirmed in all respects by Borrower. Any reference to
the Credit Agreement in any Financing Document shall be deemed to refer to this Amendment also. The execution, delivery and effectiveness of this Amendment shall not, except as expressly provided herein, operate as a waiver of any right, power or
remedy of Administrative Agent or any Bank under the Credit Agreement or any other Financing Document nor constitute a waiver of any provision of the Credit Agreement or any other Financing Document. 
 § 5.2. Survival of Agreements. All representations, warranties, covenants and agreements of Borrower shall survive the execution and delivery
of this Amendment and the performance hereof, including without limitation the making or granting of each Loan, and shall further survive until all of the Indebtedness is paid in full. All statements and agreements of Borrower or any Subsidiary
Guarantor (if any) contained in any certificate or instrument delivered by Borrower or any such Subsidiary Guarantor hereunder or under the Credit Agreement to Administrative Agent or any Bank shall be deemed to constitute representations and
warranties by, or agreements and covenants of, Borrower under this Amendment and under the Credit Agreement. 
 § 5.3. Financing
Document. This Amendment is a Financing Document, and all provisions in the Credit Agreement pertaining to Financing Documents apply hereto. 
 § 5.4. GOVERNING LAW. THIS AMENDMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK AND ANY APPLICABLE LAWS OF THE UNITED STATES OF AMERICA IN ALL RESPECTS, INCLUDING CONSTRUCTION,
VALIDITY AND PERFORMANCE. 
 § 5.5. Counterparts. This Amendment may be separately executed in counterparts and by the different
parties hereto in separate counterparts, each of which when so executed shall be deemed to constitute one and the same Amendment. Delivery of an executed signature page by facsimile transmission shall be effective as delivery of a manual executed
counterpart. 
 [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK] 
  

					
		  	10	  	Cabot Fourth Amendment

 IN WITNESS WHEREOF, this Amendment is executed as of the date first above written. 
  

					
	BORROWER:	 	CABOT OIL & GAS CORPORATION
			
		 	By:	 	 /s/ Scott C. Schroeder

		 		 	Scott C. Schroeder
		 		 	Vice President and Chief Financial Officer
		
	ADMINISTRATIVE AGENT:	 	BANK OF AMERICA, N.A.
		 	(successor to Fleet National Bank),
Administrative Agent
			
		 	By:	 	 /s/ Renita Cummings

		 	Name:	 	Renita Cummings
		 	Title:	 	Assistant Vice President

  

					
		  	11	  	Cabot Fourth Amendment

					
	BANKS:	 	BANK OF AMERICA, N.A.
		 	(successor to Fleet National Bank), a Bank
			
		 	By:	 	 /s/ Jeffrey H. Rathkamp

		 	Name:	 	Jeffrey H. Rathkamp
		 	Title:	 	Managing Director
		
		 	BMO CAPITAL MARKETS FINANCING, INC.
		 	(f/k/a Harris Nesbitt Financing, Inc.),
Documentation Agent and a Bank
			
		 	By:	 	 /s/ Gumaro Tijerina

		 	Name:	 	Gumaro Tijerina
		 	Title:	 	Vice President
		
		 	JPMORGAN CHASE BANK, N.A.
		 	Syndication Agent and a Bank
			
		 	By:	 	 /s/ Michael A. Kamauf

		 	Name:	 	Michael A. Kamauf
		 	Title:	 	Vice President
		
		 	THE BANK OF NEW YORK
			
		 	By:	 	  

		 	Name:	 	
		 	Title:	 	
		
		 	BNP PARIBAS
			
		 	By:	 	 /s/ Russell Otts

		 	Name:	 	Russell Otts
		 	Title:	 	Director
			
		 	By:	 	 /s/ Courtney Kubesch

		 	Name:	 	Courtney Kubesch
		 	Title:	 	Vice President

  

					
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		 	THE FROST NATIONAL BANK
			
		 	By:	 	 /s/ Andrew Merryman

		 	Name:	 	Andrew Merryman
		 	Title:	 	Sr. Vice President
		
		 	COMERICA BANK
			
		 	By:	 	 /s/ Matt Turner

		 	Name:	 	Matt Turner
		 	Title:	 	Corporate Banking Officer
		
		 	BANK OF SCOTLAND
			
		 	By:	 	  

		 	Name:	 	
		 	Title:	 	

  

					
		  	13	  	Cabot Fourth Amendment

 Each undersigned Class B Bank hereby consents to the Class A Banks extending the Termination Date with respect to
their Class A Commitments and Class A Loans as provided in the foregoing Fourth Amendment to Credit Agreement. 
  

					
		 	THE BANK OF NEW YORK
			
		 	By:	 	 /s/ Hussam S. Alsahlani

		 	Name:	 	Hussam S. Alsahlani
		 	Title:	 	Vice President
		
		 	BANK OF SCOTLAND
			
		 	By:	 	  

		 	Name:	 	
		 	Title:	 	

  

					
		  	14	  	Cabot Fourth Amendment

 PRICING SCHEDULE 
 Each of “Euro-Dollar Margin”, “LC Fee Rate”, “Base Rate Margin” and “Commitment Fee Rate” means, for any date, the rate set forth below in the row opposite such term and in the
column corresponding to the Debt Percentage that exists on such date: 
  

													
	 CLASS A PRICING SCHEDULE
	  	Debt Percentage*	 
	  	Less than or
equal to 50%	 	 	Greater than 50%
and less than or
equal to 75%	 	 	Greater than 75%
and less than or
equal to 90%	 	 	Greater than 90%	 
	 Euro-Dollar Margin and LC Fee Rate
	  	1.750	%	 	2.000	%	 	2.250	%	 	2.500	%
	 Base Rate Margin
	  	0.500	%	 	0.750	%	 	1.000	%	 	1.250	%
	 Commitment Fee Rate
	  	0.375	%	 	0.375	%	 	0.500	%	 	0.500	%
		
	 CLASS B PRICING SCHEDULE
	  	Debt Percentage*	 
	  	Lower than 50%	 	 	50% or higher,
but not
exceeding 75%	 	 	Higher than
75%, but not
exceeding 90%	 	 	Higher than 90%	 
	 Euro-Dollar Margin and LC Fee Rate
	  	1.000	%	 	1.250	%	 	1.500	%	 	1.750	%
	 Base Rate Margin
	  	0.000	%	 	0.000	%	 	0.250	%	 	0.500	%
	 Commitment Fee Rate
	  	0.250	%	 	0.250	%	 	0.250	%	 	0.250	%

  
  

	*	Notwithstanding the applicable Debt Percentage, prior to the delivery of the compliance certificate required to be delivered pursuant to Section 5.01(c) of the Credit Agreement
with respect to the financial statements to be delivered pursuant to Section 5.01(b) of the Credit Agreement for the quarter ending June 30, 2009, the applicable Euro-Dollar Margin, LC Fee Rate, Base Rate Margin and Commitment Fee Rate
shall be no lower than: 

 (i) as to Class A Commitments and Class A Loans, the Euro-Dollar Margin, LC Fee Rate, Base
Rate Margin and Commitment Fee Rate as set forth in the column titled “Greater than 50% and less than or equal to 75%” in the above Class A Pricing Schedule, and 
 (ii) as to Class B Commitments and Class B Loans, the Euro-Dollar Margin, LC Fee Rate, Base Rate Margin and Commitment Fee Rate as set forth in the column
titled “50% or higher, but not exceeding 75%” in the above Class B Pricing Schedule.2008 Employee Stock Purchase Plan

 Exhibit 10.1 
 RADIAN GROUP INC. 
 2008 EMPLOYEE STOCK PURCHASE PLAN 
 The following constitute the provisions of the 2008 Employee Stock Purchase Plan of Radian Group Inc.: 
 1. Purpose. The purpose of the Plan is to provide Eligible Employees of the Company and its Designated Subsidiaries with an opportunity to
purchase Common Stock of the Company, on the terms and conditions set forth herein. The Company believes that the Plan will assist the Company in attracting and retaining the services of employees and aligning the interests of participating
employees with those of the Company and its stockholders. It is the intention of the Company that the Plan qualify as an “Employee Stock Purchase Plan” under Section 423 of the Code. The provisions of the Plan shall,
accordingly, be construed so as to extend and limit participation in a manner consistent with the requirements of that section of the Code. 
 2. Definitions. 
  

	 	(a)	“Board” shall mean the Board of Directors of the Company. 

 (b) “Code” shall mean the Internal Revenue Code of 1986, as amended, and any successor statute of similar nature.
References to specific sections of the Code shall be taken to be references to corresponding sections of any successor statute. 
 (c) “Committee” shall mean the Compensation and Human Resources Committee of the Board or any other committee appointed by the Board to administer the Plan. 
 (d) “Common Stock” shall mean the Common Stock of the Company, par value $0.001. 
 (e) “Company” shall mean Radian Group Inc., a Delaware corporation. 
 (f) “Compensation” shall mean all regular straight time gross cash earnings and shall not include payments for
commissions, overtime, shift premium, incentive compensation, incentive payments, bonuses, expense reimbursement, expense allowances and other compensation. 
 (g) “Continuous Status” shall mean the absence of any interruption or termination of service as an Employee. Continuous
Status as an Eligible Employee shall not be considered interrupted in the case of a leave of absence agreed to in writing by the Company or an absence by reason of uniformed military service, provided that such leave is for a period of not more than
90 days or reemployment upon the expiration of such leave is guaranteed by contract or statute. 

 (h) “Contributions” shall mean all amounts credited to the account of a
Participant pursuant to the Plan, whether by payroll deduction, direct payment, tender of shares or otherwise. 
 (i)
“Designated Subsidiaries” shall mean the Subsidiaries which have been designated by the Board or the Committee from time to time as eligible to participate in the Plan. 
 (j) “Eligible Employee” shall mean any person who is customarily employed for at least twenty (20) hours per week
and more than five (5) months in a calendar year by the Company or one of its Designated Subsidiaries and who is not deemed for purposes of Section 423(b)(3) of the Code to own stock possessing five percent (5%) or more of the total
combined voting power or value of all classes of stock of the Company or any Subsidiary. The term shall not include any person employed by the Company or any Subsidiary on a temporary basis. 
 (k) “Exchange Act” shall mean the Securities Exchange Act of 1934, as amended. 
 (l) “Fair Market Value” shall mean the closing price at which the Common Stock shall have been sold regular way on the
New York Stock Exchange on the date as of which such value is being determined or, if no sales occurred on such day, then on the next preceding day on which there were such sales, or, if at any time the Common Stock shall not be listed on the New
York Stock Exchange, the fair market value as determined by the Board or the Committee on the basis of available prices for such Common Stock or in such manner as may be authorized by applicable regulations under the Code. 
 (m) “Offering Date” shall mean the first business day of each Offering Period of the Plan. 
 (n) “Offering Period” shall mean a period of time defined by the Board or the Committee during which a Participant’s
Contributions are accumulated for the purpose of purchasing shares of the Company’s Common Stock. The maximum offering period under the Plan is 27 months. 
 (o) “Participant” shall mean any Eligible Employee who elects to participate in the Plan. 
 (p) “Plan” shall mean this Radian Group Inc. 2008 Employee Stock Purchase Plan. 
  

 2 

 (q) “Plan Coordinator” shall mean the individual designated by the Board
or the Committee to receive Subscription Agreements and other documentation from Participants. 
 (r) “Purchase
Date” shall mean the last day of each Purchase Period of the Plan. 
 (s) “Purchase Period” shall
mean the period of time within an Offering Period in which Contributions are accumulated for the purpose of buying stock on the next scheduled Purchase Date in accordance with the terms and conditions of the Plan. Generally the Purchase Period falls
between the Offering Date and the Purchase Date or between Purchase Dates where there are multiple Purchase Dates within one Offering Period. 
 (t) “Registration Statement” shall mean the Company’s registration statement on Form S-8 under the Securities Act with respect to the shares of Common Stock to be issued under the Plan.

 (u) “Securities Act” shall mean the Securities Act of 1933, as amended. 
 (v) “Subscription Agreement” shall mean the instrument prescribed by the Board or the Committee pursuant to which an
Eligible Employee may enroll as a Participant and subscribe for the purchase of shares of Common Stock on the terms and conditions offered by the Company in accordance with the Plan. The Subscription Agreement is also intended to evidence the
Company’s offer of an option to the Eligible Employee to purchase Common Stock on the terms and conditions set forth therein and herein. 
 (w) “Subsidiary” shall mean a corporation, domestic or foreign, of which not less than 50% of the voting shares are held by the Company or a Subsidiary, whether or not such corporation now exists or
is hereafter organized or acquired by the Company or a Subsidiary. 
 3. Eligibility. 
 (a) Generally. Any person who is an Eligible Employee as of the Offering Date of a given Offering Period shall be eligible to
participate in such Offering Period under the Plan, subject to the requirements of Section 5(a) of the Plan and the limitations imposed by Section 423(b) of the Code. 
 (b) Limitations on Eligibility. Any provisions of the Plan to the contrary notwithstanding, no Eligible Employee shall be granted
an option under the Plan (i) if, immediately after grant, such Eligible Employee (or any other person whose stock would be attributed to such Eligible Employee pursuant to Section 424(d) of the Code) would own stock and/or hold outstanding
options to purchase stock possessing five percent (5%)

  

 3 

 
or more of the total combined voting power or value of all classes of stock of the Company or of any Subsidiary of the Company, or (ii) if such option
would permit his or her rights to purchase stock under all employee stock purchase plans (described in Section 423 of the Code) of the Company and its Subsidiaries to accrue at a rate that exceeds the maximum amount allowed under
Section 423(b)(8) of the Code of Fair Market Value of such stock (determined at the time such option is granted) for each calendar year in which such option is outstanding at any time. 
 4. Offering Periods and Purchase Periods. 
 (a) Offering Periods. The Plan shall be implemented by a series of Offering Periods of such duration or durations as may be determined by the Board or the Committee, with new Offering Periods commencing on such
date or dates as may be determined by the Board or the Committee. The initial Offering Period under the Plan shall not commence prior to the effective date of the Registration Statement. The Board or the Committee shall have the power to change the
duration and/or the frequency of Offering Periods with respect to future offerings without stockholder approval if such change is announced at least five (5) days prior to the scheduled beginning of the first Offering Period to be affected.

 (b) Purchase Periods. Each Offering Period shall consist of one or more consecutive Purchase Periods as determined
by the Board or the Committee with the duration or durations determined by the Board or the Committee. The last day of each Purchase Period shall be the “Purchase Date” for such Purchase Period. The initial Purchase Period under the Plan
shall not commence prior to the effective date of the Registration Statement; and the initial Purchase Date under the Plan shall not take place unless, prior thereto, the Plan shall have been approved by the stockholders of the Company as required
by Section 20(c) below. The Board or the Committee shall have the power to change the duration and/or frequency of Purchase Periods with respect to future purchases without stockholder approval if such change is announced at least five
(5) days prior to the scheduled beginning of the first Purchase Period to be affected. 
 5. Participation. 
 (a) Subscription Agreement. An Eligible Employee may become a Participant in
the Plan by completing a Subscription Agreement on the form provided by the Company and filing it with the Plan Coordinator on or before the 15th
day of the month preceding the Offering Date, unless a later time for filing the Subscription Agreement is set by the Board or the Committee for all Eligible Employees with respect to a given Offering Period (and in any event, not before the
effective date of the Registration Statement). The Subscription Agreement shall set forth the dollar amount to be paid as Contributions pursuant to the Plan, such amount to be paid derived from payroll deductions from the Participant’s
Compensation or as otherwise provided in accordance with Section 6. The Board or the Committee shall establish a Contribution limitation not to exceed the maximum amount allowed under Section 423(b)(8) of the Code (and if no such
limitation is established, it shall be deemed to be such maximum amount allowed under Section 423(b)(8) at the time an option is granted under the Plan). 
  

 4 

 (b) Payroll Deductions. Payroll deductions shall commence on the first payroll
following the Offering Date and shall end on the last payroll paid on or prior to the last day in the Purchase Period of the Offering Period to which the Subscription Agreement is applicable, unless sooner terminated by the Participant as provided
in Section 10 of this Plan. 
 6. Method of Payment of Contributions. 
 (a) Funding Methods. A Participant may fund his or her Contributions to the Plan by any of the following methods, to the extent
permitted by the Board or the Committee: 
 (i) Payroll Deductions. Electing to have Compensation deducted from each of
his or her biweekly (or other periodic) paychecks during the Offering Period, and all such payroll deductions made by a Participant shall be credited to his or her account under the Plan; or 
 (ii) Other Methods. Utilizing such other funding method or methods as the Board or the Committee may from time to time approve, and
as may be (1) permitted under applicable laws, regulations or stock exchange or trading system rules, and (2) consistent with the tax treatment of the Plan under the Code. 
 (b) Withdrawal; Decrease in Deductions. A Participant may discontinue his or her participation in the Plan by filing a Notice of
Withdrawal, as provided in Section 10 of this Plan, or, on one occasion only during the Offering Period (or more frequently if the Board or the Committee determines the necessity for such), may decrease the rate of his or her Contributions
during the Offering Period by completing and filing with the Plan Coordinator a new Subscription Agreement. The change in rate shall be effective as of the beginning of the next calendar month following the date of filing of the new Subscription
Agreement, if the agreement is filed on or before the 15th of the month preceding such date (or any other amount of time as determined by the Board or the Committee) and, if not, as of the beginning of the next succeeding calendar month. 

(c) Tax Limitations on Contributions. Notwithstanding the foregoing, to the extent necessary to comply with
Section 423(b)(8) of the Code and Section 3(b) herein, a Participant’s Contributions may be decreased to 0% of his or her payroll at such time during any Offering Period which is scheduled to end during the current calendar year that
the aggregate of all Contributions accumulated with respect to such Offering Period and any other Offering Period ending within the same calendar year exceeds the maximum amount allowed under Section 423(b)(8) of the Code of Fair Market Value
of stock (determined at the time an option is granted) (or 85% of such maximum amount to the extent that the purchase price is 85% of the Fair Market Value of such stock at the 

  

 5 

 
time an option is granted). Contributions shall recommence at the rate provided in such Participant’s Subscription Agreement at the beginning of the
first Offering Period which is scheduled to end in the following calendar year, unless terminated by the Participant as provided in Section 10 hereof. 
 7. Grant of Option; Option Price. On the Offering Date of each Offering Period, each Eligible Employee participating in such Offering Period shall be granted an option to purchase on each Purchase Date a
number of shares of the Company’s Common Stock determined by dividing such Eligible Employee’s Contributions accumulated prior to such Purchase Date and retained in the Participant’s account as of the Purchase Date by the lesser of
(i) eighty-five percent (85%) of the Fair Market Value of a share of the Company’s Common Stock on the Offering Date, or (ii) eighty-five percent (85%) of the Fair Market Value of a share of the Company’s Common Stock
on the Purchase Date; provided however, that the purchase shall be subject to limitations set forth in Sections 3(b) and 13. The Fair Market Value of a share of the Company’s Common Stock shall be determined as provided in Section 2(l) of
this Plan. 
 8. Exercise of Option. Unless a Participant withdraws or is deemed to have withdrawn from the Plan as provided in
Sections 10 or 11 hereof, his or her option for the purchase of shares will be exercised automatically on each Purchase Date within an Offering Period, and the maximum number of full shares subject to the option will be purchased at the applicable
option price with the accumulated Contributions in his or her account. The shares purchased upon exercise of an option hereunder shall be deemed to be transferred to the Participant on the Purchase Date. During his or her lifetime, a
Participant’s option to purchase shares hereunder is exercisable only by him or her. 
 9. Delivery. As promptly as
practicable after each Purchase Date within each Offering Period, the Company shall arrange the delivery to each Participant’s designated brokerage account, as appropriate, of a certificate or book-entry deposit representing the shares
purchased upon exercise of his or her option. Any cash remaining to the credit of a Participant’s account under the Plan after a purchase by him or her of shares at the termination of each Purchase Period, or which is insufficient to purchase a
full share of Common Stock of the Company, shall be carried over to the next Purchase Period if the Eligible Employee continues to participate in the Plan, or if the Eligible Employee does not continue to participate, shall be returned to said
Participant. 
 10. Voluntary Withdrawal; Termination or Change of Employment Status. 
 (a) Withdrawal. A Participant may withdraw all but not less than all the Contributions credited to his or her account under the
Plan at any time prior to each Purchase Date by giving written notice to the Company via a Notice of Withdrawal in such form as the Plan Coordinator shall reasonably require. All of the Participant’s Contributions credited to his or her account
will be paid to him or her promptly after receipt of his or her Notice of Withdrawal and his or her option for the current period will be automatically terminated, and no further Contributions for the purchase of shares may be made during the
Offering Period. 
  

 6 

 (b) Termination of Employment; Change in Status. Upon termination of a
Participant’s Continuous Status as an Eligible Employee prior to the Purchase Date within an Offering Period for any reason, including without limitation voluntary or involuntary termination of employment, retirement or death, the Contributions
credited to such Participant’s account will be returned to him or her or, in the case of his or her death, to the person or persons entitled thereto under Section 15 hereof, and his or her option will be automatically terminated.

 (c) Subsequent Offerings. A Participant’s withdrawal from an Offering Period will not have any effect upon his
or her eligibility to participate in a succeeding Offering Period or in any similar plan which may hereafter be adopted by the Company. 
 11. Automatic Withdrawal and Reset. To the extent permitted by applicable laws, regulations or stock exchange or trading system rules, if the Fair Market Value of the shares on the first Purchase Date of any Offering Period
which contains more than one Purchase Date is less than the Fair Market Value of the shares on the Offering Date for such Offering Period, then every Participant shall automatically (i) be deemed to have withdrawn from such Offering Period at
the close of such Purchase Date and after the acquisition of shares for such Purchase Period, and (ii) be deemed to have enrolled in a new Offering Period commencing on the first business day subsequent to such Purchase Period. 
 12. Interest. No interest shall accrue on the Contributions of a Participant in the Plan, whether utilized to purchase shares or repaid to
the Participant. 
 13. Company Common Stock. 
 (a) Shares Subject to the Plan. The maximum number of shares of the Company’s Common Stock which shall be made available for
sale under the Plan shall be 2,000,000 shares, subject to adjustment upon changes in capitalization of the Company as provided in Section 19 hereof. If the total number of shares which would otherwise be subject to options granted pursuant to
Section 7(a) hereof on the Offering Date of an Offering Period exceeds the number of shares then available under the Plan (after deduction of all shares for which options have been exercised or are then outstanding), the Company shall make a
pro rata allocation of the shares remaining available for option grant in as uniform a manner as shall be practicable and as it shall determine to be equitable. In such event, the Company shall give written notice of such reduction of the
number of shares subject to the option to each Eligible Employee affected thereby and shall similarly reduce the rate of Contributions, if necessary. The Plan shall automatically terminate immediately after the Purchase Date as of which the supply
of available shares is exhausted. 
 (b) No Rights as a Stockholder. The Participant will have no interest or voting
right in shares covered by his or her option until such option has been exercised. 
  

 7 

 (c) Issuance and Delivery. Shares to be delivered to a Participant under the Plan
will be registered in the name of the Participant or in the name of the Participant and his or her spouse and delivered or credited in book-entry form to the Participant’s brokerage account. 
 14. Administration. The Board, or the Committee by delegated authority from the Board, shall supervise and administer the Plan and shall
have full power to adopt, amend and rescind any rules deemed desirable and appropriate for the administration of the Plan and not inconsistent with the Plan, to construe and interpret the Plan, and to make all other determinations necessary or
advisable for the administration of the Plan. The Board’s or the Committee’s interpretations and decisions in respect of the Plan, the rules and regulations pursuant to which it is operated, and the rights of Participants hereunder shall
be final and conclusive. The Board or the Committee may appoint and remove the Plan Coordinator in its discretion, and may delegate such administrative or ministerial duties to him or her as it shall determine. 
 15. Designation of Beneficiary. 
 (a) Beneficiary Designation. A Participant may make a written designation, on his or her Subscription Agreement, of a beneficiary who is to receive shares and cash, if any, from the Participant’s account
under the Plan in the event of such Participant’s death subsequent to the end of a Purchase Period but prior to delivery to him or her of such shares and cash. In addition, a Participant may make a written designation, on his or her
Subscription Agreement, of a beneficiary who is to receive any cash from the Participant’s account under the Plan in the event of such Participant’s death prior to the Purchase Date of an Offering Period. 
 (b) Changes; No Beneficiary Designated. Such designation of beneficiary may be changed by the Participant at any time by written
notice on a subsequent or amended Subscription Agreement. In the event of the death of a Participant and in the absence of a beneficiary validly designated under the Plan who is living at the time of such Participant’s death, the Company shall
deliver such shares and/or cash to the executor or administrator of the estate of the Participant. 
 16. Transferability.
Neither Contributions credited to a Participant’s account nor any rights with regard to the exercise of an option or to receive shares under the Plan may be assigned, transferred, pledged or otherwise disposed of in any way (other than by will,
the laws of descent and distribution, or as provided in Section 15 hereof) by the Participant. Any such attempt at assignment, transfer, pledge or other disposition shall be without effect, except that the Company may treat such act as an
election to withdraw funds in accordance with Section 10 hereof. 
 17. Use of Funds. All Contributions received or held
by the Company under the Plan are general assets of the Company, free of any trust or other restriction, and may be used by the Company for any corporate purpose, and the Company shall not be obligated to segregate such 

  

 8 

 
Contributions. All references in this Plan to Participants’ Plan “accounts” shall be deemed to mean the hypothetical, unfunded bookkeeping
accounts maintained on the Company’s records for the administration of the Plan. 
 18. Reports. Each Participant in the
Plan will be entitled to a statement of account promptly following the Purchase Date. Such statements will set forth the amount of Contributions, the per share purchase price, the number of shares purchased and the remaining cash balance, if any.

 19. Adjustments Upon Changes in Capitalization; Corporate Transactions. 
 (a) Adjustment. Subject to any required action by the stockholders of the Company, the number of shares of Common Stock covered by
each option under the Plan which has not yet been exercised and the number of shares of Common Stock which have been authorized for issuance under the Plan but have not yet been placed under option (collectively, the “Reserves”), as
well as the price per share of Common Stock covered by each option under the Plan which has not yet been exercised, shall be proportionately adjusted for any increase or decrease in the number of issued shares of Common Stock resulting from a stock
split, reverse stock split, stock dividend, combination or reclassification of the Common Stock, or any other increase or decrease in the number of shares of Common Stock effected without receipt of consideration by the Company; provided, however,
that conversion of any convertible securities of the Company shall not be deemed to have been “effected without receipt of consideration”. Such adjustment shall be made by the Board or the Committee, whose determination in that respect
shall be final, binding and conclusive. Except as expressly provided herein, no issue by the Company of shares of stock of any class, or securities convertible into shares of stock of any class, shall affect, and no adjustment by reason thereof
shall be made with respect to, the number or price of shares of Common Stock subject to an option. 
 (b) Corporate
Transactions. In the event of the proposed dissolution or liquidation of the Company, any Offering Period then in progress will terminate immediately prior to the consummation of such proposed action, unless otherwise provided by the Board or
the Committee. In the event of a proposed sale of all or substantially all of the assets of the Company, or the merger of the Company with or into another corporation, each option under the Plan shall be assumed or an equivalent option shall be
substituted by such successor corporation or a parent or subsidiary of such successor corporation, unless the Board or the Committee determines, in the exercise of its sole discretion and in lieu of such assumption or substitution, to shorten the
Offering Period then in progress by setting a new Purchase Date (the “New Purchase Date”). If the Board or the Committee shortens the Offering Period then in progress in lieu of assumption or substitution in the event of a merger or
sale of assets, the Board or the Committee shall notify each Participant in writing, at least ten (10) days prior to the New Purchase Date, that the Purchase Date for his or her option has been changed to the New Purchase Date and that his or
her option will be exercised automatically on the New Purchase Date, unless prior to such date he or she has withdrawn from the Offering 

  

 9 

 
Period as provided in Section 10 hereof. For purposes of this Section 19(b), an option granted under the Plan shall be deemed to be assumed if,
following the sale of assets or merger, the option confers the right to purchase, for each share of option stock subject to the option immediately prior to the sale of assets or merger, the consideration (whether stock, cash or other securities or
property) received in the sale of assets or merger by holders of Common Stock for each share of Common Stock held on the effective date of the transaction (and if such holders were offered a choice of consideration, the type of consideration chosen
by the holders of a majority of the outstanding shares of Common Stock); provided, however, that if such consideration received in the sale of assets or merger was not solely common stock of the successor corporation or its parent (as defined in
Section 424(e) of the Code), the Board or the Committee may, with the consent of the successor corporation, provide for the consideration to be received upon exercise of the option to be solely common stock of the successor corporation or its
parent having a fair market value equal to the per share consideration received by holders of Common Stock in the sale of assets or merger. 
 The Board or the Committee may, if it so determines in the exercise of its sole discretion, also make provision for adjusting the Reserves, as well as the price per share of Common Stock covered by each outstanding
option, in the event that the Company effects one or more reorganizations, recapitalizations, rights offerings or other increases or reductions of shares of its outstanding Common Stock, and in the event of the Company being consolidated with or
merged into any other corporation. 
 20. Amendment or Termination. 
 (a) Power to Amend or Terminate. The Board may at any time terminate or amend the Plan. Except as provided in Section 19
hereof or as otherwise required by law, no such termination may affect options previously granted, nor may an amendment make any change in any option theretofore granted which adversely affects the rights of any Participant. In addition, to the
extent necessary to comply with Section 423 of the Code, the Company shall obtain stockholder approval of any amendment in such a manner and to such a degree as so required. No amendment may increase the number of shares reserved for purposes
of the Plan and no amendment shall allow any person who is not an Eligible Employee to become a Participant, without the approval of the stockholders of the Company. 
 (b) Plan Administration. Without stockholder approval and without regard to whether any Participant rights may be considered to
have been adversely affected, the Board or the Committee shall be entitled, without limitation, to limit the frequency and/or number of changes in the amount withheld during an Offering Period, establish limits on Participant Contributions expressed
as a percentage of Compensation or otherwise, establish the exchange ratio applicable to amounts withheld in a currency other than U.S. dollars, permit payroll withholding in excess of the amount designated by a Participant in order to adjust for
delays or mistakes in the Company’s processing of properly completed withholding elections, establish reasonable waiting and adjustment periods and/or 

  

 10 

 
accounting and crediting procedures to ensure that amounts applied toward the purchase of Common Stock for each Participant properly correspond with amounts
withheld from the Participant’s Compensation, and establish such other limitations or procedures as the Board or the Committee determines in its sole discretion as advisable and which are consistent with the Plan. 
 (c) Stockholder Approval. If the requisite stockholder approval of this Plan is not received at the Company’s 2009 Annual
Meeting of Stockholders, or at any adjournment or postponement thereof, held during the initial Offering Period and Purchase Period hereunder, this Plan will automatically terminate as of the final adjournment of such meeting, all outstanding
options under the Plan will thereupon be deemed to expire unexercised, and all Contributions will be returned to the Participants in accordance with Section 10 hereof. 
 21. Notices. All notices or other communications by a Participant to the Company under or in connection with the Plan shall be deemed to
have been duly given when received in the form specified by the Company at the location, or by the person, designated by the Company for the receipt thereof. All notices or other communications to a Participant under or in connection with the Plan
shall be deemed effective if sent or given to the Participant at his or her home or business address on the records of the Company, including if sent by electronic transmission. 
 22. Conditions Upon Issuance of Shares. Shares shall not be issued with respect to an option unless the exercise of such option and the
issuance and delivery of such shares pursuant thereto shall comply to the reasonable satisfaction of the Company with all applicable provisions of law, domestic or foreign, including, without limitation, the Securities Act, the Exchange Act, the
rules and regulations promulgated thereunder, and the requirements of any stock exchange or trading system upon which the shares may then be listed or quoted. 
 As a condition to the exercise of an option, the Company may require the person exercising such option to represent and warrant at the time of any such exercise that the shares are being purchased only for investment
and without any present intention to sell or distribute such shares if, in the opinion of counsel for the Company, such a representation is required by any of the aforementioned applicable provisions of law. 
 23. Additional Restrictions of Rule 16b-3. The terms and conditions of options granted hereunder to, and the purchase of shares by, persons
subject to Section 16 of the Exchange Act shall comply with the applicable provisions of Rule 16b-3 or any successor rule. The Plan shall be deemed to contain, and such options shall contain, and the shares issued upon exercise thereof shall be
subject to, such additional conditions and restrictions as may be required by Rule 16b-3 or any successor rule to qualify for the maximum exemption from Section 16 of the Exchange Act with respect to Plan transactions. 
  

 11 

 24. ERISA Status of Plan. The Plan is not intended and shall not be construed to constitute
an “employee benefit plan” within the meaning of Section 3(3) of the Employee Retirement Income Security Act of 1974, as amended. 
 25. Miscellaneous Provisions.  
 (a) Governing Law. Except to the extent preempted by any
applicable federal law, the Plan and the options granted hereunder shall be construed and administered in accordance with the laws of the State of Delaware, without reference to the principles of conflicts of laws thereunder. 
 (b) Severability. In the event any provision of the Plan shall be held to be illegal or invalid for any reason, the illegality or
invalidity shall not affect the remaining provisions hereof, and the Plan shall be construed or enforced as though the illegal or invalid provision had not been included. 
 (c) Headings. The section headings of the Plan are for reference only. In the event of a conflict between a section heading and the
content of a section of the Plan, the content to the section shall control. 
 26. Effective Date; Term of Plan. The Plan
became effective on December 9, 2008, upon its adoption by the Committee pursuant to delegated authority from the Board. The Plan shall continue in effect through December 31, 2018, unless sooner terminated under Sections 13 or 20 hereof.

 *    *    * 
  

 12

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