Document:

First Amendment to Second Amended and Restated Credit Agreement

 EXHIBIT 10.1 
 FIRST AMENDMENT 
 TO 
 SECOND AMENDED AND RESTATED 
 CREDIT AGREEMENT 
 Dated as of November 6, 2007 
 AMONG 
 BILL BARRETT CORPORATION, 
 AS BORROWER, 
 THE GUARANTORS, 

JPMORGAN CHASE BANK, N.A. 
 AS ADMINISTRATIVE AGENT, 
 AND 
 THE LENDERS PARTY HERETO 

 FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT 
 THIS FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT (this “First Amendment”) dated as of November 6, 2007
is among BILL BARRETT CORPORATION, a Delaware corporation (the “Borrower”); each of the undersigned guarantors (the “Guarantors”, and together with the Borrower, the “Obligors”); each of the lenders
party to the Credit Agreement referred to below (collectively, the “Lenders”); and JPMORGAN CHASE BANK, N.A., as administrative agent for the Lenders (in such capacity, together with its successors in such capacity, the
“Administrative Agent”). 
 R E C I T A L S 
 A. The Borrower, the Agents and the Lenders are parties to that certain Second Amended and Restated Credit Agreement dated as of March 17, 2006 (as
amended by the First Amendment to Second Amended and Restated Credit Agreement, and as further amended, restated, modified or supplemented, the “Credit Agreement”), pursuant to which the Lenders have made certain credit available to
and on behalf of the Borrower. 
 B. The Borrower has requested and the Administrative Agent and the Lenders have agreed to make certain
other changes to the Credit Agreement. 
 C. NOW, THEREFORE, to induce the Agents and the Lenders to enter into this First Amendment and in
consideration of the premises and the mutual covenants herein contained, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows: 
 Section 1. Defined Terms. Each capitalized term used herein but not otherwise defined herein has the meaning given such term in the Credit
Agreement, as amended by this First Amendment. Unless otherwise indicated, all section references in this First Amendment refer to sections of the Credit Agreement. 
 Section 2. Amendments to Credit Agreement. 
 2.1 Amendments to Section 1.02. The
following definition is hereby added where alphabetically appropriate to read as follows: 
 “First
Amendment” means that certain First Amendment to Second Amended and Restated Credit Agreement, dated as of November 6, 2007 among the Borrower, the Guarantors, the Administrative Agent and the Lenders party thereto. 
 2.2 Amendments to Annex I. Annex I is hereby deleted and replaced in its entirety with Annex I attached hereto. 

 Section 3. Conditions Precedent. This First Amendment shall not become effective until the date on
which each of the following conditions is satisfied (or waived in accordance with Section 12.02 of the Credit Agreement) (the “Effective Date”): 
 3.1 The Administrative Agent shall have received from each Lender required by Section 12.02(b) of the Credit Agreement, counterparts (in such number as may be requested by the Administrative Agent) of this First
Amendment signed on behalf of such Person. 
 3.2 The Administrative Agent and the Lenders shall have received all fees and other amounts due
and payable on or prior to the date hereof. 
 3.3 No Default shall have occurred and be continuing as of the date hereof, after giving
effect to the terms of this First Amendment. 
 3.4 The Administrative Agent shall have received such other documents as the Administrative
Agent or its special counsel may reasonably require. 
 The Administrative Agent is hereby authorized and directed to declare this First
Amendment to be effective when it has received documents confirming or certifying, to the satisfaction of the Administrative Agent, compliance with the conditions set forth in this Section 3 or the waiver of such conditions as permitted hereby.
Such declaration shall be final, conclusive and binding upon all parties to the Credit Agreement for all purposes. 
 Section 4.
Miscellaneous. 
 4.1 Confirmation. The provisions of the Credit Agreement, as amended by this First Amendment, shall remain in
full force and effect following the effectiveness of this First Amendment. 
 4.2 Ratification and Affirmation; Representations and
Warranties. Each Obligor hereby (a) acknowledges the terms of this First Amendment; (b) ratifies and affirms its obligations under, and acknowledges, renews and extends its continued liability under, each Loan Document to which it is a
party and agrees that each Loan Document to which it is a party remains in full force and effect, except as expressly amended hereby, notwithstanding the amendments contained herein and (c) represents and warrants to the Lenders that as of the
date hereof, after giving effect to the terms of this First Amendment: (i) all of the representations and warranties contained in each Loan Document to which it is a party are true and correct, except to the extent any such representations and
warranties are expressly limited to an earlier date, in which case, such representations and warranties shall continue to be true and correct as of such specified earlier date, (ii) no Default or Event of Default has occurred and is continuing
and (iii) no event or events have occurred which individually or in the aggregate could reasonably be expected to have a Material Adverse Effect. 
 4.3 Counterparts. This First Amendment may be executed by one or more of the parties hereto in any number of separate counterparts, and all of such counterparts taken together shall be deemed to constitute one
and the same instrument. Delivery of this First Amendment by facsimile transmission shall be effective as delivery of a manually executed counterpart hereof. 
  

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 4.4 No Oral Agreement. This First Amendment, the Credit Agreement and the other Loan Documents
executed in connection herewith and therewith represent the final agreement between the parties and may not be contradicted by evidence of prior, contemporaneous, or unwritten oral agreements of the parties. There are no subsequent oral agreements
between the parties. 
 4.5 GOVERNING LAW. THIS FIRST AMENDMENT (INCLUDING, BUT NOT LIMITED TO, THE VALIDITY AND ENFORCEABILITY
HEREOF) SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK. 
 4.6 Payment of Expenses. In
accordance with Section 12.03 of the Credit Agreement, the Borrower agrees to pay or reimburse the Administrative Agent for all of its reasonable out-of-pocket costs and reasonable expenses incurred in connection with this First Amendment, any
other documents prepared in connection herewith and the transactions contemplated hereby, including, without limitation, the reasonable fees and disbursements of counsel to the Administrative Agent. 
 4.7 Severability. Any provision of this First Amendment which 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 provisions hereof, and any such prohibition or unenforceability in any jurisdiction shall not invalidate or render unenforceable such provision
in any other jurisdiction. 
 4.8 Successors and Assigns. This Agreement shall be binding upon and inure to the benefit of the parties
hereto and their respective successors and assigns. 
 [SIGNATURES BEGIN NEXT PAGE] 
  

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 IN WITNESS WHEREOF, the parties hereto have caused this First Amendment to be duly executed as of the
date first written above. 
  

									
	BORROWER:	 		 	BILL BARRETT CORPORATION
					
		 		 		 	By:	 	/s/ Robert W. Howard
		 		 		 		 	Robert W. Howard
		 		 		 		 	Chief Financial Officer
			
	GUARANTORS:	 		 	 BILL BARRETT PRODUCTION
 COMPANY

					
		 		 		 	By:	 	/s/ Robert W. Howard
		 		 		 		 	Robert W. Howard
		 		 		 		 	Chief Financial Officer
				
		 		 		 	BILL BARRETT PROPERTIES INC.
					
		 		 		 	By:	 	/s/ Robert W. Howard
		 		 		 		 	Robert W. Howard
		 		 		 		 	Chief Financial Officer
				
		 		 		 	CIRCLE B LAND COMPANY LLC
					
		 		 		 	By:	 	/s/ Fredrick J. Barrett
		 		 		 		 	Fredrick J. Barrett
		 		 		 		 	Manager
				
		 		 		 	BILL BARRETT CBM CORPORATION
					
		 		 		 	By:	 	/s/ Robert W. Howard
		 		 		 		 	Robert W. Howard
		 		 		 		 	Chief Financial Officer

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 1

			
	 BILL BARRETT CBM, LLC
 By: Bill Barrett CBM
Corporation, as manager

		
	By:	 	/s/ Robert W. Howard
		 	Robert W. Howard
		 	Chief Financial Officer

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 2

									
	ADMINISTRATIVE AGENT:	 		 	JPMORGAN CHASE BANK, N.A.
					
		 		 		 	By:	 	/s/ J. Scott Fowler
		 		 		 		 	J. Scott Fowler
		 		 		 		 	Senior Vice President

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 3

									
	LENDER:	 		 	JPMORGAN CHASE BANK, N.A.
					
		 		 		 	By:	 	/s/ J. Scott Fowler
		 		 		 		 	J. Scott Fowler
		 		 		 		 	Senior Vice President

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 4

									
	LENDER:	 		 	 DEUTSCHE BANK TRUST COMPANY
 AMERICAS

					
		 		 		 	By:	 	/s/ D. Lazarov
		 		 		 	Name:	 	Dusan Lazarov
		 		 		 	Title:	 	Vice President
					
		 		 		 	By:	 	/s/ Susan LeFevre
		 		 		 	Name:	 	Susan LeFevre
		 		 		 	Title:	 	Director

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 5

									
	LENDER:	 		 	BANK OF AMERICA, N.A.
					
		 		 		 	By:	 	/s/ Stephen J. Hoffman
		 		 		 	Name:	 	Stephen J. Hoffman
		 		 		 	Title:	 	Managing Director

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 6

									
	LENDER:	 		 	 BMO CAPITAL MARKETS FINANCING, INC.
 f/k/a
Harris Nesbitt Financing, Inc.

					
		 		 		 	By:	 	/s/ Mary Lou Allen
		 		 		 	Name:	 	Mary Lou Allen
		 		 		 	Title:	 	Vice President

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 7

									
	LENDER:	 		 	U.S. BANK NATIONAL ASSOCIATION
					
		 		 		 	By:	 	/s/ Kathryn A. Gaiter
		 		 		 	Name:	 	Kathryn A. Gaiter
		 		 		 	Title:	 	Vice President

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 8

									
	LENDER:	 		 	FORTIS CAPITAL CORP.
					
		 		 		 	By:	 	/s/ David Montgomery
		 		 		 	Name:	 	David Montgomery
		 		 		 	Title:	 	Director
					
		 		 		 	By:	 	/s/ Darrell Holley
		 		 		 	Name:	 	Darrell Holley
		 		 		 	Title:	 	Managing Director

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 9

									
	LENDER:	 		 	SUNTRUST BANK
					
		 		 		 	By:	 	/s/ James Warren
		 		 		 	Name:	 	James Warren
		 		 		 	Title:	 	Managing Director

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 10

									
	LENDER:	 		 	UNION BANK OF CALIFORNIA, N.A.
					
		 		 		 	By:	 	/s/ Timothy Brendel
		 		 		 	Name:	 	Timothy Brendel
		 		 		 	Title:	 	Assistant Vice President

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 11

									
	LENDER:	 		 	COMERICA BANK
					
		 		 		 	By:	 	/s/ Peter L. Sefzik
		 		 		 	Name:	 	Peter L. Sefzik
		 		 		 	Title:	 	Vice President

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 12

									
	LENDER:	 		 	COMPASS BANK
					
		 		 		 	By:	 	/s/ Murray E. Brasseux
		 		 		 	Name:	 	Murray E. Brasseux
		 		 		 	Title:	 	Executive Vice President

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 13

									
	LENDER:	 		 	GOLDMAN SACHS CREDIT PARTNERS L.P.
					
		 		 		 	By:	 	/s/ Pedro Ramirez
		 		 		 	Name:	 	Pedro Ramirez
		 		 		 	Title:	 	Authorized Signatory

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 14

									
	LENDER:	 		 	MERRILL LYNCH CAPITAL, a division of Merrill Lynch Business Financial Services Inc.
					
		 		 		 	By:	 	/s/ Gregory Hanson
		 		 		 	Name:	 	Gregory Hanson
		 		 		 	Title:	 	Vice President

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 15

									
	LENDER:	 		 	CREDIT SUISSE, CAYMAN ISLANDS BRANCH
					
		 		 		 	By:	 	/s/ Vanessa Gomez
		 		 		 	Name:	 	Vanessa Gomez
		 		 		 	Title:	 	Vice President
					
		 		 		 	By:	 	/s/ Morenikeji Ajayi
		 		 		 	Name:	 	Morenikeji Ajayi
		 		 		 	Title:	 	Associate

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 16

									
	LENDER:	 		 	WELLS FARGO BANK, N.A.
					
		 		 		 	By:	 	/s/ Guy C. Evangelista
		 		 		 	Name:	 	Guy C. Evangelista
		 		 		 	Title:	 	Vice President

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 17

									
	LENDER:	 		 	BANK OF SCOTLAND plc
					
		 		 		 	By:	 	/s/ Karen Weich
		 		 		 	Name:	 	Karen Weich
		 		 		 	Title:	 	Vice President

			
	  
 SIGNATURE PAGE TO FIRST AMENDMENT
 18

 Annex I 
 LIST OF MAXIMUM CREDIT AMOUNTS 
 Aggregate Maximum Credit Amounts 
  

							
	 Name of Lender
	  	Applicable Percentage	 	 	Maximum Credit Amount
	 JPMorgan Chase Bank, N.A.
	  	8.25688073	%	 	$	45,000,000.00
	 Deutsche Bank Trust Company Americas
	  	8.25688073	%	 	$	45,000,000.00
	 Bank of America, N.A.
	  	8.25688073	%	 	$	45,000,000.00
	 BMO Capital Markets Financing, Inc.
	  	8.25688073	%	 	$	45,000,000.00
	 U.S. Bank National Association
	  	8.25688073	%	 	$	45,000,000.00
	 Fortis Capital Corp.
	  	7.33944954	%	 	$	40,000,000.00
	 SunTrust Bank
	  	7.33944954	%	 	$	40,000,000.00
	 Union Bank of California, N.A.
	  	7.33944954	%	 	$	40,000,000.00
	 Bank of Scotland plc
	  	7.33944954	%	 	$	40,000,000.00
	 Wells Fargo Bank, N.A.
	  	7.33944954	%	 	$	40,000,000.00
	 Merrill Lynch Capital
	  	7.33944954	%	 	$	40,000,000.00
	 Credit Suisse
	  	4.58715596	%	 	$	25,000,000.00
	 Comerica Bank
	  	4.58715596	%	 	$	25,000,000.00
	 Compass Bank
	  	4.58715596	%	 	$	25,000,000.00
	 Goldman Sachs Credit Partners L.P.
	  	0.91743119	%	 	$	5,000,000.00
	 TOTAL
	  	100	%	 	$	545,000,000.00

			
	  
 ANNEX I
 1Exhibit 10.1

 Exhibit 10.01 
 UNDER ARMOUR, INC. 
 STOCK OPTION PLAN 
 EFFECTIVE AS OF MARCH 1, 2000 
 1. Establishment, Purpose and Types of Awards

 The purpose of the Under Armour, Inc. Stock Option Plan (“the Plan”) is to promote the long-term growth and profitability of
Under Armour, Inc. (the “Corporation”) by (i) providing key people with incentives to improve stockholder value and to contribute to the growth and financial success of the Corporation, and (ii) enabling the Corporation to
attract, retain and reward the best available persons for positions of substantial responsibility. 
 The Plan permits the granting of stock
options (including nonqualified stock options and incentive stock options qualifying under Section 422 of the Code) and stock appreciation rights (including free-standing, tandem and limited stock appreciation rights) or any combination of the
foregoing (collectively, “Awards”). 
 The Plan is a compensatory benefit plan within the meaning of Rule 701 under the
Securities Act of 1933 (the “Securities Act”). Except to the extent any other exemption from the Securities Act is expressly relied upon in connection with any agreement entered into pursuant to the Plan or the securities issuable
hereunder are registered under the Securities Act, the issuance of Common Stock pursuant to the Plan is intended to qualify for the exemption from registration under the Securities Act provided by Rule 701. To the extent that an exemption
from registration under the Securities Act provided by Rule 701 is unavailable, all unregistered offers and sales of Awards and shares of Common Stock issuable upon exercise of an Award are intended to be exempt from registration under the
Securities Act in reliance upon the private offering exemption contained in Section 4(2) of the Securities Act, or other available exemption, and the Plan shall be so administered. 
 Effective February 2, 2005, the Plan also permits the grant of restricted stock. For the purpose of the Plan, the term “Award” shall
also include restricted stock. 
 2. Definitions 
 Under this Plan, except where the context otherwise indicates, the following definitions apply: 
 (a) “Board”
shall mean the Board of Directors of the Corporation. 
 (b) “Change in Control” shall mean: (i) any sale,
exchange or other disposition of substantially all of the Corporation’s assets or over 50% of its Common Stock; or (ii) any merger, share exchange, consolidation or other reorganization or business combination in which the Corporation is
not the surviving or continuing corporation, or in which the Corporation’s stockholders become entitled to receive cash securities of the Corporation other than voting common stock, or securities of another issuer. 
 (c) “Code” shall mean the Internal Revenue Code of 1986, as amended, and any regulations issued thereunder. 
 (d) “Committee” shall mean the Board or committee of Board members appointed pursuant to Section 3 of the Plan to administer
the Plan. 
 (e) “Common Stock” shall mean shares of the Corporation’s common stock. 
 (f) “Exchange Act” shall mean the Securities Exchange Act of 1934, as amended. 

 (g) “Fair Market Value” of a share of the Corporation’s Common Stock for any
purpose on a particular date shall be determined in a manner such as the Committee shall in good faith determine to be appropriate. 
 (h) “Grant Agreement” shall mean a written agreement between the Corporation and a grantee memorializing the terms and conditions of an Award granted pursuant to the Plan. 
 (i) “Grant Date” shall mean the date on which the Committee formally acts to grant an Award to a Grantee or such other date as the
Committee shall so designate at the time of taking such formal action. 
 (j) “Parent” shall mean a corporation,
whether now or hereafter existing, within the meaning of the definition of “parent corporation” provided in Section 424(e) of the Code, or any successor thereto of similar import. 
 (k) “Rule 16b-3” shall mean Rule 16b-3 as in effect under the Exchange Act on the effective date of the Plan, or any
successor provision prescribing conditions necessary to exempt the issuance of securities under the Plan (and further transactions in such securities) from Section 16(b) of the Exchange Act. 
 (l) “Subsidiary” and “subsidiaries” shall mean only a corporation or corporations, whether now or hereafter existing,
within the meaning of the definition of “subsidiary corporation” provided in Section 424(f) of the Code, or any successor thereto of similar import. 
 3. Administration 
 (a) Procedure. The Plan shall be administered by the
Board. In the alternative, the Board may appoint a Committee consisting of not less than two (2) members of the Board to administer the Plan on behalf of the Board, subject to such terms and conditions as the Board may prescribe. Once
appointed, the Committee shall continue to serve until otherwise directed by the Board. From time to time, the Board may increase the size of the Committee and appoint additional members thereof, remove members (with or without cause) and
appoint new members in substitution therefor, fill vacancies, however caused, and remove all members of the Committee and, thereafter, directly administer the Plan. In the event that the Board is the administrator of the Plan in lieu of a
Committee, the term “Committee” as used herein shall be deemed to mean the Board. 
 Members of the Board or Committee who are
either eligible for Awards or have been granted Awards may vote on any matters affecting the administration of the Plan or the grant of Awards pursuant to the Plan, except that no such member shall act upon the granting of an Award to himself or
herself, but any such member may be counted in determining the existence of a quorum at any meeting of the Board or the Committee during which action is taken with respect to the granting of an Award to him or her. 
 The Committee shall meet at such times and places and upon such notice as it may determine. A majority of the Committee shall constitute a
quorum. Any acts by the Committee may be taken at any meeting at which a quorum is present and shall be by majority vote of those members entitled to vote. Additionally, any acts reduced to writing or approved in writing by all of the
members of the Committee shall be valid acts of the Committee. 
 (b) Procedure After Registration of Common Stock. Upon and
after the point in time that the Common Stock or any other capital stock of the Corporation becomes registered under Section 12 of the Exchange Act, the Board shall take all action necessary to cause the Plan to be administered in accordance
with the then effective provisions of Rule 16b-3, provided that any amendment to the Plan required for compliance with such provisions shall be made in accordance with Section 11 of the Plan. 
  

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 (c) Powers of the Committee. The Committee shall have all the powers vested in it by the
terms of the Plan, such powers to include authority, in its sole and absolute discretion, to grant Awards under the Plan, prescribe Grant Agreements evidencing such Awards and establish programs for granting Awards. The Committee shall have
full power and authority to take all other actions necessary to carry out the purpose and intent of the Plan, including, but not limited to, the authority to: 
 (i) determine the eligible persons to whom, and the time or times at which Awards shall be granted, 
 (ii) determine the types of Awards to be granted, 
 (iii) determine the number of shares to be covered by or used for reference purposes for each Award, 
 (iv) impose such terms, limitations, restrictions and conditions upon any such Award as the Committee shall deem appropriate,

 (v) modify, extend or renew outstanding Awards, accept the surrender of outstanding Awards and substitute new Awards,
provided that no such action shall be taken with respect to any outstanding Award which would adversely affect the grantee without the grantee’s consent, and 
 (vi) accelerate or otherwise change the time in which an Award may be exercised or becomes payable and to waive or accelerate the
lapse, in whole or in part, of any restriction or condition with respect to such Award, including, but not limited to, any restriction or condition with respect to the vesting or exercisability of an Award following termination of any grantee’s
employment. 
 The Committee shall have full power and authority to administer and interpret the Plan and to adopt such rules, regulations,
agreements, guidelines and instruments for the administration of the Plan and for the conduct of its business as the Committee deems necessary or advisable and to interpret same, all within the Committee’s sole and absolute discretion.

 (d) Limited Liability. To the maximum extent permitted by law, no member of the Board or Committee shall be liable for
any action taken or decision made in good faith relating to the Plan or any Award thereunder. 
 (e) Indemnification. To the
maximum extent permitted by law, the members of the Board and Committee shall be indemnified by the Corporation in respect of all their activities under the Plan. 
 (f) Effect of Committee’s Decision. All actions taken and decisions and determinations made by the Committee on all matters relating to the Plan pursuant to the powers vested in it hereunder shall be
in the Committee’s sole and absolute discretion and shall be conclusive and binding on all parties concerned, including the Corporation, its stockholders, any participants in the Plan and any other employee of the Corporation, and their
respective successors in interest. 
 4. Shares Available for the Plan; Maximum Awards 
 Subject to adjustments as provided in Section 10 of the Plan, the shares of stock that may be delivered or purchased or used for reference purposes
(with respect to stock appreciation rights) under the Plan, including with respect to incentive stock options intended to qualify under Section 422 of the Code, shall not exceed an aggregate of 10,856,000 shares of Common Stock of the
Corporation and the Corporation shall reserve said number of shares of Common Stock for issuance pursuant to the Plan. If any Award, or portion of an Award, under the Plan expires or terminates unexercised, becomes unexercisable or is forfeited
or otherwise terminated, surrendered or canceled as to any shares, the shares subject to such Award shall thereafter be available for further Awards under the Plan. 
  

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 5. Participation 
 Participation in the Plan shall be open to all employees, officers, directors and consultants of the Corporation, or of any Parent or Subsidiary of the Corporation, as may be selected by the Committee from time to
time. Notwithstanding the foregoing, participation in the Plan with respect to Awards of incentive stock options shall be limited to employees of the Corporation, or of any Parent or Subsidiary of the Corporation. 
 Awards may be granted to such eligible persons and for or with respect to such number of shares of Common Stock as the Committee shall determine, subject
to the limitations in Section 4 of the Plan. A grant of any type of Award made in any one year to an eligible person shall neither guarantee nor preclude a further grant of that or any other type of Award to such person in that year or
subsequent years. 
 6. Stock Options 
 Subject to the other applicable provisions of the Plan, the Committee may from time to time grant to eligible participants nonqualified stock options or incentive stock options as that term is defined in Section 422 of the
Code. The stock options granted shall be subject to the following terms and conditions. 
 (a) Grant of Option. The
grant of a stock option shall be evidenced by a Grant Agreement, executed by the Corporation and the grantee, stating the number of shares of Common Stock subject to the stock option evidenced thereby and the terms and conditions of such stock
option, in such form as the Committee may from time to time determine. 
 (b) Price. The price per share payable upon the
exercise of each stock option (“exercise price”) shall be determined by the Committee. 
 (c) Payment. Stock
options may be exercised in whole or in part by payment of the exercise price of the shares to be acquired in accordance with the provisions of the Grant Agreement, and/or such rules and regulations as the Committee may have prescribed, and/or
such determinations, orders, or decisions as the Committee may have made. Payment may be made in cash (or cash equivalents acceptable to the Committee) or, if approved by the Committee, in shares of Common Stock or a combination of cash and
shares of Common Stock, or by such other means as the Committee may prescribe. The Fair Market Value of shares of Common Stock delivered on exercise of stock options shall be determined as of the date of exercise. Shares of Common Stock
delivered in payment of the exercise price may be previously owned shares or, if approved by the Committee, shares acquired upon exercise of the stock option. Any fractional share will be paid in cash. If approved by the Board of
Directors, the Corporation may make or guarantee loans to grantees to assist grantees in exercising stock options and satisfying any related withholding tax obligations. 
 If the Common Stock is registered under Section 12(b) or 12(g) of the Exchange Act, the Committee, subject to such limitations as it may determine, may authorize payment of the exercise price, in whole
or in part, by delivery of a properly executed exercise notice, together with irrevocable instructions, to: (i) a brokerage firm designated by the Corporation to deliver promptly to the Corporation the aggregate amount of sale or loan proceeds
to pay the exercise price and any withholding tax obligations that may arise in connection with the exercise, and (ii) the Corporation to deliver the certificates for such purchased shares directly to such brokerage firm. 
 (d) Terms of Options. The term during which each stock option may be exercised shall be determined by the Committee; provided, however,
that in no event shall a stock option be exercisable more than ten years from the date it is granted. Prior to the exercise of the stock option and delivery of the shares certificates represented thereby, the grantee shall have none of the
rights of a stockholder with respect to any shares represented by an outstanding stock option. 
  

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 (e) Restrictions on Incentive Stock Options. Incentive Stock Options granted under the
Plan shall comply in all respects with Code Section 422 and, as such, shall meet the following additional requirements. 
 (i) Grant Date. An incentive stock option must be granted within 10 years of the earlier of the Plan’s adoption by the Board of Directors or approval by the Corporation’s shareholders. 
 (ii) Exercise Price and Term. The exercise price of an incentive stock option shall not be less than 100% of the Fair Market
Value of the shares on the date the stock option is granted and the term of the stock option shall not exceed ten years. Also, the exercise price of any incentive stock option granted to a grantee who owns (within the meaning of
Section 422(b)(6) of the Code, after the application of the attribution rules in Section 424(d) of the Code) more than 10% of the total combined voting power of all classes of shares of the Corporation or its Parent or
Subsidiary corporations (within the meaning of Sections 422 and 424 of the Code) shall be not less than 110% of the Fair Market Value of the Common Stock on the grant date and the term of such stock option shall not exceed five years. 
 (iii) Maximum Grant. The aggregate Fair Market Value (determined as of the Grant Date) of shares of Common Stock with respect to
which all incentive stock options first become exercisable by any grantee in any calendar year under this or any other plan of the Corporation and its Parent and Subsidiary corporations may not exceed $100,000 or such other amount as may be
permitted from time to time under Section 422 of the Code. To the extent that such aggregate Fair Market Value shall exceed $100,000, or other applicable amount, such stock options shall be treated as nonqualified stock options. In
such case, the Corporation may designate the shares of Common Stock that are to be treated as stock acquired pursuant to the exercise of an incentive stock option by issuing a separate certificate for such shares and identifying the certificate as
incentive stock option shares in the stock transfer records of the Corporation. 
 (iv) Grantee. Incentive stock
options shall only be issued to employees of the Corporation, or of a Parent or Subsidiary of the Corporation. 
 (v) Designation. No stock option shall be an incentive stock option unless so designated by the Committee at the time of grant or in the Grant Agreement evidencing such stock option. 
 (vi) Stockholder Approval. No stock option issued under the Plan shall be an incentive stock option unless the Plan is approved
by the shareholders of the Corporation within 12 months of its adoption by the Board in accordance with the Bylaws and Certificates of the Corporation and governing law relating to such matters. 
 (f) Other Terms and Conditions. Stock options may contain such other provisions, not inconsistent with the provisions of the Plan, as
the Committee shall determine appropriate from time to time. 
 7. Stock Appreciation Rights 
 (a) Award of Stock Appreciation Rights. Subject to the other applicable provisions of the Plan, the Committee may at any time and from
time to time grant stock appreciation rights (“SARs”) to eligible participants, either on a free-standing basis (without regard to or in addition to the grant of a stock option) or on a tandem basis (related to the grant of an underlying
stock option), as it determines. SARs granted in tandem with or in addition to a stock option may be granted either at the same time as the stock option or at a later time; provided, however, that a tandem SAR shall not be granted with respect
to any outstanding incentive stock option Award without the consent of the grantee. SARs shall be evidenced by Grant Agreements, executed by the Corporation and the grantee, stating the number of shares of Common Stock subject to the SAR
evidenced thereby and the terms and conditions of such SAR, in such form as the 

  

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Committee may from time to time determine. The term during which each SAR may be exercised shall be determined by the Committee. In no event shall
a SAR be exercisable more than ten years from the date it is granted. The grantee shall have none of the rights of a stockholder with respect to any shares of Common Stock represented by a SAR. 
 (b) Restrictions of Tandem SARs. No incentive stock option may be surrendered in connection with the exercise of a tandem SAR unless the
Fair Market Value of the Common Stock subject to the incentive stock option is greater than the exercise price for such incentive stock option. SARs granted in tandem with stock options shall be exercisable only to the same extent and subject
to the same conditions as the stock options related thereto are exercisable. The Committee may, in its discretion, prescribe additional conditions to the exercise of any such tandem SAR. 
 (c) Amount of Payment Upon Exercise of SARs. A SAR shall entitle the grantee to receive, subject to the provisions of the Plan and the
Grant Agreement, a payment having an aggregate value equal to the product of (i) the excess of (A) the Fair Market Value on the exercise date of one share of Common Stock over (B) the base price per share specified in the Grant
Agreement, times (ii) the number of shares specified by the SAR, or portion thereof, which is exercised. In the case of exercise of a tandem SAR, such payment shall be made in exchange for the surrender of the unexercised related stock
option (or any portion or portions thereof which the grantee from time to time determines to surrender for this purpose). 
 (d) Form of Payment Upon Exercise of SARs. Payment by the Corporation of the amount receivable upon any exercise of a SAR may be made by the delivery of Common Stock or cash, or any combination of Common Stock and
cash, as determined in the sole discretion of the Committee from time to time. If upon settlement of the exercise of a SAR a grantee is to receive a portion of such payment in shares of Common Stock, the number of shares shall be determined by
dividing such portion by the Fair Market Value of a share of Common Stock on the exercise date. No fractional shares shall be used for such payment and the Committee shall determine whether cash shall be given in lieu of such fractional shares
or whether such fractional shares shall be eliminated. 
 8. Withholding Of Taxes 
 The Corporation may require, as a condition to the grant of any Award under the Plan or exercise pursuant to such Award or to the delivery of certificates
for shares issued or payments of cash to a grantee pursuant to the Plan or a Grant Agreement (hereinafter collectively referred to as a “taxable event”), that the grantee pay to the Corporation, in cash or, if approved by the Corporation,
in shares of Common Stock, including shares acquired upon grant of the Award or exercise of the Award, valued at Fair Market Value on the date as of which the withholding tax liability is determined, any federal, state or local taxes of any kind
required by law to be withheld with respect to any taxable event under the Plan. The Corporation, to the extent permitted or required by law, shall have the right to deduct from any payment of any kind (including salary or bonus) otherwise due
to a grantee any federal, state or local taxes of any kind required by law to be withheld with respect to any taxable event under the Plan, or to retain or sell without notice a sufficient number of the shares to be issued to such grantee to cover
any such taxes. 
 9. Transferability 
 No Award granted under the Plan shall be transferable by a grantee otherwise than by will or the laws of descent and distribution. Unless otherwise determined by the Committee in accord with the provisions of the immediately preceding
sentence, an Award may be exercised during the lifetime of the grantee, only by the grantee or, during the period the grantee is under a legal disability, by the grantee’s guardian or legal representative. 
 10. Adjustments; Business Combinations 
 If the
number of outstanding shares of Common Stock is increased or decreased or the shares of Common Stock are changed into or exchanged for a different number or kind of shares or other securities of the Corporation on account of any recapitalization,
reclassification, stock split, reverse split, combination of shares, exchange of shares, stock dividend or other distribution payable in capital stock, or other increase 

  

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or decrease in such shares effected without receipt of consideration by the Corporation, the number and kind of shares for which Awards are outstanding shall
be adjusted proportionately and accordingly so that the proportionate interest of the grantee immediately following such event shall, to the extent practicable, be the same as immediately before such event. Any such adjustment in outstanding stock
options or SARs shall not change the aggregate exercise price payable with respect to shares that are subject to the unexercised portion of an outstanding stock option or SAR, as applicable, but shall include a corresponding proportionate adjustment
in the per share exercise price of such stock option or SAR. The conversion of any convertible securities of the Corporation shall not be treated as an increase in shares effected without receipt of consideration. Notwithstanding the foregoing, in
the event of any distribution to the Corporation’s stockholders of securities of any other entity or other assets (including an extraordinary cash dividend but excluding a non-extraordinary dividend payable in cash or in stock of the
Corporation) without receipt of consideration by the Corporation, the Corporation may, in such manner as the Corporation deems appropriate, adjust (i) the number and kind of shares subject to outstanding Awards and/or (ii) the exercise
price of outstanding stock options and SARs to reflect such distribution. 
 In the event of any proposed Change in Control, the Committee
shall take such action as it deems appropriate and equitable to effectuate the purposes of this Plan and to protect the grantees of Awards, which action may include, but without limitation, any one or more of the following: (i) acceleration or
change of the exercise and/or expiration dates of any Award to require that exercise be made, if at all, prior to the Change in Control; (ii) cancellation of any Award upon payment to the holder in cash of the Fair Market Value of the Common
Stock subject to such Award as of the date of (and, to the extent applicable, as established for purposes of) the Change in Control, less the aggregate exercise price, if any, of the Award; and (iii) in any case where equity securities of
another entity are proposed to be delivered in exchange for or with respect to Common Stock of the Corporation, arrangements to have such other entity replace the Awards granted hereunder with awards with respect to such other securities, with
appropriate adjustments in the number of shares subject to, and the exercise prices under, the award. 
 The Committee is authorized to make
adjustments in the terms and conditions of, and the criteria included in, Awards in recognition of unusual or nonrecurring events (including, without limitation, the events described in the preceding two paragraphs of this Section 10) affecting
the Corporation, or the financial statements of the Corporation or any Subsidiary, or of changes in applicable laws, regulations, or accounting principles, whenever the Committee determines that such adjustments are appropriate in order to prevent
dilution or enlargement of the benefits or potential benefits intended to be made available under the Plan. 
 In the event the Corporation
dissolves and liquidates (other than pursuant to a plan of merger or reorganization), then notwithstanding any restrictions on exercise set forth in this Plan or any Grant Agreement, or other agreement evidencing a stock option or stock appreciation
right: (i) each grantee shall have the right to exercise his stock option or stock appreciation right at any time up to ten (10) days prior to the effective date of such liquidation and dissolution; and (ii) the Committee may make
arrangements with the grantees for the payment of appropriate consideration to them for the cancellation and surrender of any stock option or stock appreciation right that is so canceled or surrendered at any time up to ten (10) days prior to
the effective date of such liquidation and dissolution. The Committee may establish a different period (and different conditions) for such exercise, delivery, cancellation, or surrender to avoid subjecting the grantee to liability under
Section 16(b) of the Exchange Act. Any stock option or stock appreciation right not so exercised, canceled, or surrendered shall terminate on the last day for exercise prior to such effective date. 
 Except as hereinbefore expressly provided, issuance by the Corporation of shares of stock of any class or securities convertible into shares of stock of
any class, for cash, property, labor or services, upon direct sale, upon the exercise of rights or warrants to subscribe therefore, or upon conversion of shares or obligations of the Corporation convertible into such shares or other securities, and
in any case whether or not for fair value, shall not affect, and no adjustment by reason thereof shall be made with respect to, the number of shares of Common Stock subject to Awards theretofore granted or the purchase price per share of Common
Stock subject to Awards. 
  

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 11. Termination and Modification of the Plan 
 The Board, without further approval of the stockholders, may modify or terminate the Plan or any portion thereof at any time, except that no modification
shall become effective without prior approval of the stockholders of the Corporation to increase the number of shares of Common Stock subject to the Plan or if stockholder approval is necessary to comply with any tax or regulatory requirement or
rule of any exchange or Nasdaq System upon which the Common Stock is listed or quoted (including for this purpose stockholder approval that is required for continued compliance with Rule 16b-3 or stockholder approval that is required to
enable the Committee to grant incentive stock options pursuant to the Plan). 
 The Committee shall be authorized to make minor or
administrative modifications to the Plan as well as modifications to the Plan that may be dictated by requirements of federal or state laws applicable to the Corporation or that may be authorized or made desirable by such laws. The Committee
may amend or modify the grant of any outstanding Award in any manner to the extent that the Committee would have had the authority to make such Award as so modified or amended. No modification may be made that would materially adversely affect
any Award previously made under the Plan without the approval of the grantee. 
 12. Non-Guarantee of Employment 
 Nothing in the Plan or in any Grant Agreement thereunder shall confer any right on an employee to continue in the employ of the Corporation or shall
interfere in any way with the right of the Corporation to terminate an employee at any time. 
 13. Termination of Employment 
 For purposes of maintaining a grantee’s continuous status as an employee and accrual of rights under any Award, transfer of an employee among the
Corporation and the Corporation’s Parent or Subsidiaries shall not be considered a termination of employment. Nor shall it be considered a termination of employment for such purposes if an employee is placed on military or sick leave or
such other leave of absence which is considered as continuing intact the employment relationship; in such a case, the employment relationship shall be continued until the date when an employee’s right to reemployment shall no longer be
guaranteed either by law or contract. 
 14. Written Agreement 
 Each Grant Agreement entered into between the Corporation and a grantee with respect to an Award granted under the Plan shall incorporate the terms of this Plan and shall contain such provisions, consistent with the
provisions of the Plan, as may be established by the Committee.
 15. Non-Uniform Determinations 
 The Committee’s determinations under the Plan (including without limitation determinations of the persons to receive Awards, the form, amount and
timing of such Awards, the terms and provisions of such Awards and the agreements evidencing same) need not be uniform and may be made by it selectively among persons who receive, or are eligible to receive, Awards under the Plan, whether or not
such persons are similarly situated. 
 16. Limitation on Benefits 
 With respect to persons subject to Section 16 of the Exchange Act, transactions under this Plan are intended to comply with all applicable conditions of Rule 16b-3. To the extent any provision of the
Plan or action by the Committee fails to so comply, it shall be deemed null and void, to the extent permitted by law and deemed advisable by the Committee. 
  

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 17. Listing and Registration 
 If the Corporation determines that the listing, registration or qualification upon any securities exchange or upon any listing or quotation system established by the National Association of Securities
Dealers, Inc. (“Nasdaq System”) or under any law, of shares subject to any Award is necessary or desirable as a condition of, or in connection with, the granting of same or the issue or purchase of shares thereunder, no such
Award may be exercised in whole or in part and no restrictions on such Award shall lapse, unless such listing, registration or qualification is effected free of any conditions not acceptable to the Corporation. 
 18. Compliance with Securities Law 
 The
Corporation may require that a grantee, as a condition to exercise of an Award, and as a condition to the delivery of any share certificate, provide to the Corporation, at the time of each such exercise and each such delivery, a written
representation that the shares of Common Stock being acquired shall be acquired by the grantee solely for investment and will not be sold or transferred without registration or the availability of an exemption from registration under the Securities
Act and applicable state securities laws. The Corporation may also require that a grantee submit other written representations which will permit the Corporation to comply with federal and applicable state securities laws in connection with the
issuance of the Common Stock, including representations as to the knowledge and experience in financial and business matters of the grantee and the grantee’s ability to bear the economic risk of the grantee’s investment. The
Corporation may require that the grantee obtain a “purchaser representative” as that term is defined in applicable federal and state securities laws. The stock certificates for any shares of Common Stock issued pursuant to this Plan
may bear a legend restricting transferability of the shares of Common Stock unless such shares are registered or an exemption from registration is available under the Securities Act and applicable state securities laws. The Corporation may
notify its transfer agent to stop any transfer of shares of Common Stock not made in compliance with these restrictions. Common Stock shall not be issued with respect to an Award granted under the Plan unless the exercise of such Award and the
issuance and delivery of share certificates for such Common Stock pursuant thereto shall comply with all relevant provisions of law, including, without limitation, the Securities Act, the Exchange Act, the rules and regulations promulgated
thereunder, and the requirements of any national securities exchange or Nasdaq System upon which the Common Stock may then be listed or quoted, and shall be further subject to the approval of counsel for the Corporation with respect to such
compliance to the extent such approval is sought by the Committee. 
 19. No Trust or Fund Created 
 Neither the Plan nor any Award shall create or be construed to create a trust or separate fund of any kind or a fiduciary relationship between the
Corporation and a grantee or any other person. To the extent that any grantee or other person acquires a right to receive payments from the Corporation pursuant to an Award, such right shall be no greater than the right of any unsecured general
creditor of the Corporation. 
 20. No Limit on Other Compensation Arrangements 
 Nothing contained in the Plan shall prevent the Corporation or its Parent or Subsidiary corporations from adopting or continuing in effect other
compensation arrangements (whether such arrangements be generally applicable or applicable only in specific cases) as the Committee in its discretion determines desirable, including without limitation the granting of stock options, stock awards,
stock appreciation rights or phantom stock units otherwise than under the Plan. 
 21. No Restriction of Corporate Action 
 Nothing contained in the Plan shall be construed to prevent the Corporation or any Parent or Subsidiary from taking any corporate action which is deemed
by the Corporation or such Parent or Subsidiary to be appropriate or in its best interest, whether or not such action would have an adverse effect 

  

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on the Plan or any Award issued under the Plan. No employee, beneficiary or other person shall have any claim against the Corporation or any Parent or
Subsidiary as a result of such action. 
 22. Governing Law 
 The validity, construction and effect of the Plan, of Grant Agreements entered into pursuant to the Plan, and of any rules, regulations, determinations or decisions made by the Board or Committee relating to the Plan
or such Grant Agreements, and the rights of any and all persons having or claiming to have any interest therein or thereunder, shall be determined exclusively in accordance with applicable federal laws and the laws of the State of Maryland without
regard to its conflict of laws rules and principles. 
 23. Plan Subject to Charter and By-Laws 
 This Plan is subject to the Charter and By-Laws of the Corporation, as they may be amended from time to time. 
 24. Effective Date; Termination Date 
 The Plan
is effective as of the date on which the Plan was adopted by the Board; provided that no stock options issued hereunder shall be treated as incentive stock options, regardless of the designation in the Grant Agreement, unless the Plan is approved by
the shareholders of the Corporation as provided in Section 6(e)(vi). No Award shall be granted under the Plan after the close of business on the day immediately preceding the tenth anniversary of the effective date of the
Plan. Subject to other applicable provisions of the Plan, all Awards made under the Plan prior to such termination of the Plan shall remain in effect until such Awards have been satisfied or terminated in accordance with the Plan and the terms
of such Awards. 
 25. Restricted Stock 
 (a) Grant of Restricted Stock. The Committee may from time to time grant to eligible participants shares of Common Stock that are subject to restrictions and to a risk of forfeiture (referred to as “restricted
stock”). Restricted stock shall be subject to such restrictions, conditions and other terms as the Committee may determine. 
 (b)
Restrictions. At the time an award of restricted stock is made, the Committee shall establish a restriction period applicable to such restricted stock. Each Award of restricted stock may be subject to a different restriction
period. The Committee may, in its sole discretion, at the time a grant of restricted stock is made, prescribe conditions that must be satisfied prior to the expiration of the restriction period, including the satisfaction of corporate or
individual performance objectives or continued Service, in order that all or any portion of the restricted stock shall vest. The Committee also may, in its sole discretion, shorten or terminate the restriction period or waive any of the
conditions applicable to all or a portion of the restricted stock. The restricted stock may not be sold, transferred, assigned, pledged or otherwise encumbered or disposed of during the restriction period or prior to the satisfaction of any
other conditions prescribed by the Committee with respect to such restricted stock. 
 (c) Restricted Stock Certificates. The
Corporation shall issue, in the name of each eligible participant to whom restricted stock has been granted, stock certificates representing the total number of shares of restricted stock granted to the grantee, as soon as reasonably practicable
after the grant date. The Board may provide in an Award that either (i) the Secretary of the Corporation shall hold such certificates for the grantee’s benefit until such time as the restricted stock is forfeited to the Corporation,
or the restrictions lapse, or (ii) such certificates shall be delivered to the grantee, provided, however, that such certificates shall bear a legend or legends that complies with the applicable securities laws and regulations and makes
appropriate reference to the restrictions imposed under the Plan and the Grant Agreement. The Corporation may also use the book-entry method of share recordation in lieu of issuing share certificates. 
  

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 (d) Rights of Holders of Restricted Stock. Unless the Committee otherwise provides in a Grant
Agreement, holders of restricted stock shall have the right to vote such stock and the right to receive any dividends declared or paid with respect to such stock. The Committee may provide that any dividends paid on restricted stock must be
reinvested in shares of stock, which may or may not be subject to the same vesting conditions and restrictions applicable to such restricted stock. All distributions, if any, received by a grantee with respect to restricted stock as a result of
any stock split, stock dividend, combination of shares, or other similar transaction shall be subject to the restrictions applicable to the original Award. 
 (e) Termination of Employment. Unless otherwise provided by the Committee in the applicable Grant Agreement, upon the termination of a grantee’s employment with the Corporation (including if a non-employee
director of the Corporation shall cease to be a director), any shares of restricted stock held by such grantee that have not vested, or with respect to which all applicable restrictions and conditions have not lapsed, shall immediately be deemed
forfeited. Upon forfeiture of restricted stock, the grantee shall have no further rights with respect to such Award, including but not limited to any right to vote restricted stock or any right to receive dividends with respect to shares of
restricted stock. 
 (f) Purchase and Delivery of Stock. The grantee shall be required to purchase the restricted stock from the
Corporation at a purchase price equal to the greater of (i) the aggregate par value of the shares of Stock represented by such restricted stock or (ii) the purchase price, if any, specified in the Grant Agreement relating to such
restricted stock. The purchase price shall be payable by cash or cash equivalents or, in the discretion of the Committee, in consideration for past services rendered to the Corporation. Upon the expiration or termination of the restriction
period and the satisfaction of any other conditions prescribed by the Committee, having properly paid the purchase price, the restrictions applicable to shares of restricted stock shall lapse, and, unless otherwise provided in the Grant Agreement, a
stock certificate for such shares shall be delivered, free of all such restrictions, to the grantee or the grantee’s beneficiary or estate, as the case may be. 
 As amended through October 11, 2007 
  

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