Document:

Third Amended and Restated Employee Stock Option Plan

 EXHIBIT 4.7 
  
 CYBERGUARD CORPORATION 
  
 THIRD AMENDED AND RESTATED EMPLOYEE STOCK OPTION PLAN 
  
 Dated September 4, 1998, as amended through December 4, 2003 
  

	1.	Purpose 

  
 The purpose of the CyberGuard Corporation Employee Stock Option Plan (the “Plan”) is to promote the long-term growth and performance of
CyberGuard Corporation (the “Corporation”) and its affiliates and to attract and retain outstanding individuals by awarding stock options, stock appreciation rights, performance awards, restricted stock and/or other stock-based awards.

  

	2.	Definitions 

  
 The following definitions are applicable to the Plan: 
  
 “Award” means the grant of Options, SARs, Performance Awards, Restricted Stock or other stock-based award under the Plan. 
  
 “Board” means the Board of Directors of the Corporation.

  
 “Board Committee” means the Compensation Committee
of the Board, or in lieu thereof, the Board may appoint any committee of at least two directors to administer the Plan. 
  
 “Change of Control” means any of the events set forth below; provided, however, that the Board Committee, in its sole discretion,
may specify a more restrictive definition of Change of Control in any Award agreement and, in such event, the definition of Change of Control set forth in the Award agreement shall apply to the Award granted under such Award agreement: 

 
 (a) The acquisition in one or more transactions, other
than from the Corporation, by any individual, entity or group (within the meaning of Section 13(d)(3) or 14(d)(2) of the Exchange Act) of beneficial ownership (within the meaning of Rule 13d-3 promulgated under the Exchange Act) of either (i) 20% of
the Outstanding Corporation Common Stock or (ii) 20% of the Corporation Voting Securities; provided, however, that the following shall not constitute a Change of Control: any acquisition by (1) the Corporation or any of its
Subsidiaries, any employee benefit plan (or related trust) sponsored or maintained by the Corporation or any of its Subsidiaries, or (2) any corporation with respect to which, following such acquisition, more than 80% of, respectively, the then
outstanding shares of common stock of such corporation and the combined voting power of the then outstanding voting securities of such corporation entitled to vote generally in the election of directors is then beneficially owned, directly or
indirectly, by all or substantially all of the individuals and entities who were the beneficial owners, respectively, of the Outstanding Corporation Common Stock and Corporation Voting Securities immediately prior to such acquisition in
substantially the same proportion as their ownership, immediately prior to such acquisition, of the Outstanding Corporation Common Stock and Corporation Voting Securities, as the case may be; or 
  
 (b) Individuals who constitute the Incumbent Board cease for
any reason to constitute in excess of three-fourths (3⁄4) of the Board; provided, however, that any individual becoming a director subsequent to September 4 ̧1998 whose election or nomination for election by the Corporation was
approved by a vote of at least a majority of the directors then comprising the Incumbent Board shall be considered as though such individual were a member of the Incumbent Board, but excluding, for this purpose, any such 

 individual whose initial assumption of office is in connection with an actual or threatened election
contest relating to the election of members of the Board; or 
  
 (c) Approval by the stockholders of the Corporation of a reorganization, merger or consolidation, unless, following such reorganization, merger or consolidation, all or substantially all of the individuals and
entities who were the respective beneficial owners of the Outstanding Corporation Common Stock and Corporation Voting Securities immediately prior to such reorganization, merger or consolidation, following such reorganization, merger or
consolidation beneficially own, directly or indirectly, more than 80% of, respectively, the then outstanding shares of common stock and the combined voting power of the then outstanding voting securities entitled to vote generally in the election of
directors, as the case may be, of the corporation resulting from such reorganization, merger or consolidation in substantially the same proportion as their ownership of the Outstanding Corporation Common Stock and Corporation Voting Securities
immediately prior to such reorganization, merger of consolidation, as the case may be; or 
  
 (d) Approval by the stockholders of the Corporation of (i) a complete liquidation or dissolution of the Corporation or (ii) a sale or
other disposition of 60% or more by value of the assets of the Corporation other than to a corporation with respect to which, following such sale or disposition, more than 80% of, respectively, the then outstanding shares of common stock and the
combined voting power of the then outstanding voting securities entitled to vote generally in the election of directors is then owned beneficially, directly or indirectly, by all or substantially all of the individuals and entities who were the
beneficial owners, respectively, of the Outstanding Corporation Common Stock and Corporation Voting Securities immediately prior to such sale or disposition in substantially the same proportion as their ownership of the Outstanding Corporation
Common Stock and Corporation Voting Securities, as the case may be, immediately prior to such sale or disposition. 
  
 “Code” means the Internal Revenue Code of 1986, as amended. 
  
 “Commission” means the Securities and Exchange Commission. 
  
 “Common Stock” means the common stock of the Corporation, $.01 par
value per share. 
  
 “Corporation Voting Securities”
means the combined voting power of all outstanding voting securities of the Corporation entitled to vote generally in the election of directors for the Board. 
  

“Exchange Act” means the Securities Exchange Act of 1934, as amended. 
  
 “Fair Market Value” means, on any date, the closing sale price of one share of Common Stock, as reported in the
NASDAQ National Market System or any national securities exchange on which the Common Stock is then listed, as published in the Wall Street Journal or another newspaper of general circulation, as of such date or, if there were no sales reported as
of such date, as of the last date preceding such date as of which a sale was reported. In the event that the Common Stock is not listed on the NASDAQ National Market System or a national securities exchange, Fair Market Value shall be determined in
good faith by the Board Committee in its sole discretion. 
  
 “Grant Date” means the date on which an Option under Section 5.1 hereof or a SAR under Section 6.1 hereof is granted. 
  
 “Incumbent Board” means the Board as constituted as of September 4, 1998. 
  
 “Non-Statutory Stock Option” means an option to purchase shares of Common Stock which is not an Incentive Stock
Option. 
  

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 “Option” means any option to purchase shares of Common Stock granted under Sections 5.1 and
10.1 hereof. 
  
 “Option Price” means the purchase price
of each share of Common Stock under an Option. 
  
 “Outstanding Corporation Common Stock” means, at any time, the issued and outstanding shares of Corporation Common Stock. 
  
 “Participant” means any employee or consultant of the Corporation and its affiliates, or members of the Board, designated by the Board Committee
to receive an Award under the Plan. 
  
 “Performance
Award” means an Award of shares of Common Stock granted under Section 7 hereof. 
  
 “Performance Period” means the period of time established by the Board Committee for achievement of certain objectives under Section 7.1 hereof. 
  
 “Restriction Period” means the period of time specified in a Performance Award agreement or a Restricted Stock
agreement, as the case may be, between the Participant and the Corporation during which the following conditions remain in effect: (i) certain restrictions on the sale or other disposition of shares of Common Stock awarded under the Plan, and (ii)
subject to the terms of the applicable agreement, a requirement of continued employment of the Participant in order to prevent forfeiture of the Award. 
  
 “Retirement” and “Termination upon Retirement” shall be deemed to have occurred at anytime when all of the following three events (a,
b and c) have occurred: 
  
 (a) an employee: (i)
is terminated without cause, or (ii) resigns his or her position with the Corporation, or (iii) resigns for reasons of disability; and 
  
 (b) such termination occurs on or after his or her sixtieth (60th) birthday; and 
  
 (c) either (i) employee has at least ten (10) years of service with the Corporation, or (ii) employee has been continuously in the employ
of the Corporation since July 1, 1996. 
  
 This provision shall apply only to
employees, not consultants or others (that is, consultants or others under no circumstances may be deemed to have “retired” under the Plan.) 
  
 “Stock Appreciation Rights” or “SARs” means the right to receive a cash payment from the Corporation equal to the excess of the Fair
Market Value of a stated number of shares of Common Stock at the exercise date over a fixed price for such shares. 
  
 “Subsidiary” means any corporation (other than the Corporation) in an unbroken chain of corporations beginning with the Corporation if each of
the corporations (other than the last corporation in the chain) owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in the chain. 
  

	3.	Shares Subject to Plan 

  
 3.1 Shares Reserved under the Plan. Subject to adjustment as provided in Section 3.2, no more than ten million (10,000,000) shares of Common Stock
shall be cumulatively available for the grant of Stock Options under the Plan. Any Common Stock issued by the Corporation through the assumption or substitution of outstanding grants from an acquired corporation or entity shall not reduce the shares
available for grants under the Plan. Shares of Common Stock to be issued pursuant to the Plan may be authorized and 
  

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 unissued shares, treasury shares, or any combination thereof. Subject to Section 6.2 hereof, if any shares of Common
Stock subject to an Award hereunder are forfeited or any such Award otherwise terminates without the issuance of such shares of Common Stock to a Participant, or if any shares of Common Stock are surrendered by a Participant in full or partial
payment of the Option Price of an Option, such shares, to the extent of any such forfeiture, termination or surrender, shall again be available for grant under the Plan; provided however, that shares of Common Stock surrendered by a
Participant who is subject to Section 16 of the Exchange Act, or any successor thereto, in payment of the Option Price, shall be available for grant under the Plan only to Participants not subject to such Section. 
  
 3.2 Adjustments. Subject to Section 12 hereof, the aggregate number of
shares of Common Stock which may be awarded under the Plan and outstanding Awards shall be adjusted by the Board Committee to reflect a change in the capitalization of the Corporation, including but not limited to, a stock dividend or split,
recapitalization, reorganization, merger, consolidation, combination, exchange of shares, spin-off, spin-out or other distribution of assets to shareholders. 
  

	4.	Administration of Plan 

  
 4.1 Administration by the Board Committee. The Plan shall be administered by the Board Committee; provided however, the Board
Committee may delegate some or all of its authority and responsibility under the Plan with respect to Awards to Participants who are not subject to Section 16 of the Exchange Act to the Chief Executive Officer of the Corporation. In addition to the
Board Committee, the Board also has discretion to issue awards under the Plan and references herein to the Board Committee taking action with respect to the Plan should be considered as also referring to the Board, where appropriate. The Board
Committee shall have authority to interpret the Plan, to establish, amend, and rescind any rules and regulations relating to the Plan, to prescribe the form of any agreement or instrument executed in connection herewith, and to make all other
determinations necessary or advisable for the administration of the Plan. All such interpretations, rules, regulations and determinations shall be conclusive and binding on all persons and for all purposes. In addition, the Board Committee shall
have authority, without amending the Plan, to grant Awards hereunder to Participants who are foreign nationals or employed outside the United States or both, on terms and conditions different from those specified herein as may, in the sole judgment
and discretion of the Board Committee, be necessary or desirable to further the purpose of the Plan. 
  
 4.2 Designation of Participants. Participants shall be selected, from time to time, by the Board Committee, from those employees and consultants of
the Corporation and its affiliates, and from those members of the Board, who, in the opinion of the Board Committee, have the capacity to contribute materially to the continued growth and successful performance of the Corporation. 
  

	5.	Stock Options 

  
 5.1 Grants. Options may be granted, from time to time, to such employees and consultants of the Corporation and its affiliates, and to such members
of the Board, as may be selected by the Board Committee. The Option Price shall be determined by the Board Committee effective on the Grant Date; provided however, that such price shall not be less than fifty (50%) of the Fair Market
Value of a share of Common Stock on the Grant Date. The number of shares of Common Stock subject to each option granted to each Participant, the terms of each option, and any other terms and conditions of an Option granted hereunder shall be
determined by the Board Committee, in its sole discretion, effective on the Grant Date; provided however, that no option shall be exercisable any later than ten (10) years from the Grant Date. Each option shall be evidenced by an
Option agreement between the Participant and the Corporation which shall specify the Option Price, the term of the Option, the number of shares of Common Stock to which the Option pertains, the conditions upon which the Option becomes exercisable
and such other terms and conditions as 
  

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 the Board Committee shall determine. All Options issued under this Plan shall become immediately exercisable upon
occurrence of a Change of Control. 
  
 5.2 Payment of Option
Price. No shares of Common Stock shall be issued upon exercise of an Option until full payment of the Option Price therefor by the Participant. Upon exercise, the Option Price may be paid in cash, in shares of Common Stock having a Fair Market
Value equal to the Option Price, or in any combination thereof. 
  
 5.3 Rights as Shareholders. Participants shall not have any of the rights of a shareholder with respect to any shares subject to an Option until such shares have been issued upon the proper exercise of such Option. 
  
 5.4 Transferability of Options. Options granted under the Plan may not
be sold, transferred, pledged, assigned, hypothecated or otherwise disposed of except by will or by the laws of descent and distribution. All Options granted to a Participant under the Plan shall be exercisable during the lifetime of such
Participant only by such Participant, his agent, guardian or attorney-in-fact. 
  
 5.5 Termination of Employment. If a Participant ceases to be an employee or a consultant of either the Corporation or of any of its affiliates, the Options granted hereunder shall be exercisable in accordance
with the Option agreement between the Participant and the Corporation. 
  

	6.	Stock Appreciation Rights 

  
 6.1 Grants. Stock Appreciation Rights may be granted, from time to time, to such employees and consultants of the Corporation and its affiliates,
and to such members of the Board, as may be selected by the Board Committee. SARs may be granted at the discretion of the Board Committee either (i) in connection with an Option or (ii) independent of an Option. The price from which appreciation
shall be computed shall be established by the Board Committee at the Grant Date; provided however, that such price shall not be less than fifty percent (50%) of the Fair Market Value of the number of shares of Common Stock subject of
the grant on the Grant Date. In the event the SAR is granted in connection with an Option, the fixed price from which appreciation shall be computed shall be the Option Price. Each grant of a SAR shall be evidenced by a Stock Appreciation Rights
agreement between the Participant and the Corporation which shall specify the type of SAR granted, the number of SARs, the conditions upon which the SARs vest and such other terms and conditions as the Board Committee shall determine. 
  
 6.2 Exercise of SARs. SARs may be exercised upon such terms and
conditions as the Board Committee shall determine; provided however, that SARs granted in connection with Options may be exercised only to the extent the related Options are then exercisable. Notwithstanding Section 3.1 hereof, upon
exercise of a SAR granted in connection with an Option as to all or some of the shares subject of such Award, the related Option shall be automatically canceled to the extent of the number of shares subject of the exercise, and such shares shall no
longer be available for grant hereunder. Conversely, if the related Option is exercised as to some or all of the shares subject of such Award, the related SAR shall automatically be canceled to the extent of the number of shares of the exercise, and
such shares shall no longer be available for grant hereunder. All SARs shall become immediately exercisable upon occurrence of a Change of Control. 
  
 6.3 Payment of Exercise. Upon exercise of a SAR, the holder shall be paid in cash the excess of the Fair Market Value of the number of shares
subject of the exercise over the fixed price, which in the case of a SAR granted in connection with an Option shall be the Option Price for such, shares. 
  

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 6.4 Rights of Shareholders. Participants shall not have any of the rights of a shareholder with
respect to any Options granted in connection with a SAR until shares have been issued upon the proper exercise of an Option. 
  
 6.5 Transferability of SARs. SARs granted under the Plan may not be sold, transferred, pledged, assigned, hypothecated or otherwise disposed of
except by will or by the laws of descent and distribution. All SARs granted to a Participant under the Plan shall be exercisable during the lifetime of such Participant only by such Participant, his agent, guardian, or attorney-in-fact. 

 
 6.6 Termination of Employment. If a Participant ceases to be an
employee or a consultant of either the Corporation or of any of its affiliates, SARs granted hereunder shall be exercisable in accordance with the Stock Appreciation Rights agreement between the Participant and the Corporation. 
  

	7.	Performance Awards 

  
 7.1 Awards. Awards of shares of Common Stock may be made, from time to time, to such employees and consultants of the Corporation and its
affiliates, and to such members of the Board, as may be selected by the Board Committee. The release of such shares to the Participant at the lapse of restriction on the sale or transfer of shares subject to such Awards shall be contingent upon (i)
achievement of such corporate, sector, division or other objectives during the Performance Period as shall be established by the Board Committee and (ii) the expiration of the Restriction Period. Except as provided in the Performance Award agreement
between the Participant and the Corporation, shares subject to such Awards under this Section 7.1 shall be released to the Participant only after the expiration of the relevant Restriction Period. Each Award under this Section 7.1 shall be evidenced
by a Performance Award agreement between the Participant and the Corporation which shall specify the applicable performance objectives, the Performance Period, the Restriction Period, any forfeiture conditions and such other terms and conditions as
the Board Committee shall determine. All restrictions applicable to Performance Awards shall immediately expire upon occurrence of a Change of Control. 
  
 7.2 Stock Certificates. Upon an Award of shares of Common Stock under Section 7.1 of the Plan, the Corporation shall issue a certificate registered
in the name of the Participant bearing the following legend and any other legend required by any federal or state securities laws or by the Florida Business Corporation Act: 
  
 “The sale or other transfer of the shares of stock represented by this certificate is subject to certain restrictions
set forth in the CyberGuard Corporation Employee Stock Option Plan, administrative rules adopted pursuant to such Plan and a Performance Award agreement between the registered owner and CyberGuard Corporation. A copy of the Plan, such rules and such
agreement may be obtained from the Secretary of CyberGuard Corporation. 
  
 Unless
otherwise provided in the Performance Award agreement between the Participant and the Corporation, such certificates shall be retained by the Corporation until the expiration of the Restriction Period. Upon the expiration of the Restriction Period,
the Corporation shall (i) cause the removal of the legend from the certificates for such shares as to which a Participant is entitled in accordance with the Performance Award agreement between the Participant and the Corporation and (ii) release
such shares to the custody of the Participant. 
  
 7.3 Rights
as Shareholders. Subject to the provisions of the Performance Award agreement between the Participant and the Corporation, during the Performance Period, Participants may exercise full 
  

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 voting rights with respect to all shares awarded thereto under Section 7.1 hereof and shall be entitled to receive
dividends and other distributions paid with respect to those shares. During the period between the completion of the Performance Period and the expiration of the Restriction Period, Participants may exercise full voting rights and shall be entitled
to receive dividends and other distributions only as to the number of shares determined in accordance with the Performance Award agreement between the Participant and the Corporation. 
  
 7.4 Transferability of Shares. Certificates evidencing the shares of Common Stock awarded under the Plan shall not be
sold, exchanged, assigned, transferred, pledged, hypothecated or otherwise disposed of until the expiration of the Restriction Period. 
  
 7.5 Termination of Employment. If a Participant ceases to be an employee or a consultant of either the Corporation or of one of its affiliates, the
number of shares subject of the Award, if any, to which the Participant shall be entitled shall be determined in accordance with the Performance Award agreement between the Participant and the Corporation. 
  
 7.6 Transfer of Employment. If a Participant transfers employment from
one business unit of the Corporation or any of its affiliates to another business unit during a Performance Period, such Participant shall be eligible to receive such number of shares of Common Stock as the Board Committee may determine based upon
such factors as the Board Committee in its sole discretion may deem appropriate. 
  

	8.	Restricted Stock Awards 

  
 8.1 Awards. Awards of shares of Common Stock subject to such restrictions as to vesting and otherwise as the Board Committee shall determine, may
be made, from time to time, to employees and consultants of the Corporation and its affiliates, and to such members of the Board, as may be selected by the Board Committee. The Board Committee may in its sole discretion at the time of the Award or
at any time thereafter provide for the early vesting of such Award prior to the expiration of the Restriction Period. Each Award under this Section 8.1 shall be evidenced by a Restricted Stock agreement between the Participant and the Corporation
which shall specify the vesting schedule, any rights of acceleration, any forfeiture conditions, and such other terms and conditions as the Board Committee shall determine. All restrictions applicable to Restricted Stock Awards shall immediately
expire upon occurrence of a Change of Control. 
  
 8.2 Stock
Certificates. Upon an Award of shares of Common Stock under Section 8.1 of the Plan, the Corporation shall issue a certificate registered in the name of the Participant bearing the following legend and any other legend required by any federal or
state securities laws or by the Florida Business Corporation Act. 
  
 “The sale or other transfer of the shares of stock represented by this certificate is subject to certain restrictions set forth in the CyberGuard Corporation Employee Stock Option Plan, administrative rules adopted pursuant to such
Plan and a Restricted Stock agreement between the registered owner and CyberGuard Corporation. A copy of the Plan, such rules and such agreement may be obtained form the Secretary of CyberGuard Corporation.” 
  
 Unless otherwise provided in the Restricted Stock agreement between the Participant and the
Corporation, such certificates shall be retained by the Corporation until the expiration of the Restriction Period. Upon the expiration of the Restriction Period, the Corporation shall (i) cause the removal of the legend from the certificates for
such shares as to which a Participant is entitled in accordance with the Restricted Stock 
  

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 agreement between the Participant and the Corporation and (ii) release such shares to the custody of the Participant.

  
 8.3 Rights as Shareholders. During the Restriction
Period, Participants may exercise full voting rights with respect to all shares awarded thereto under Section 8.1 hereof and shall be entitled to receive dividends and other distributions paid with respect to those shares. 
  
 8.4 Transferability of Shares. Certificates evidencing the shares of
Common Stock awarded under the Plan shall not be sold, exchanged, assigned, transferred, pledged, hypothecated or otherwise disposed of until the expiration of the Restriction Period. 
  
 8.5 Termination of Employment. If a Participant ceases to be an employee or a consultant of either the Corporation or
of any of its affiliates, the number of shares subject of the Award, if any, to which the Participant shall be entitled shall be determined in accordance with the Restricted Stock agreement between the Participant and the Corporation. All remaining
shares as to which restrictions apply at the date of termination of employment shall be forfeited subject to such exceptions, if any, authorized by the Board Committee. 
  

	9.	Other Stock-Based Awards 

  
 Awards of shares of Common Stock and other awards that are valued in whole or in part by reference to, or are otherwise based on, Common Stock, may be
made, from time to time, to employees and consultants of the Corporation and its affiliates, and to such members of the Board, as may be selected by the Board Committee. Such Awards may be made alone or in addition to or in connection with any other
Award hereunder. The Board Committee may in its sole discretion determine the terms and conditions of any such Award. Each such Award shall be evidenced by an agreement between the Participant and the Corporation which shall specify the number of
shares of Common Stock subject of the Award, any consideration therefor, any vesting or performance requirements and such other terms and conditions as the Board Committee shall determine. All such Awards shall be fully vested and payable
immediately upon the occurrence of a Change of Control. 
  

	10.	(Omitted Intentionally) 

  

	11.	Amendment or Termination of Plan 

  
 Until such time as a Change of Control shall have occurred, the Board or the Board Committee may amend, suspend or terminate the Plan or any part thereof
from time to time, provided that no change may be made which would impair the rights of a Participant to whom shares of Common Stock have theretofore been awarded without the consent of said Participant. 
  

	12.	Miscellaneous 

  
 12.1 Rights of Participants. Nothing in the Plan shall interfere with or limit in any way the right of the Corporation or any affiliate to
terminate any Participant’s employment or consultancy at any time, nor confer upon any Participant any right to continued employment or consulting status with the Corporation or any affiliate. 
  
 12.2 Tax Withholding. The Corporation shall have the authority to
withhold, or to require a Participant to remit to the Corporation, prior to issuance or delivery of any shares or cash hereunder, an amount sufficient to satisfy federal, state and a local tax withholding requirements associated with any Award. In
addition, the Corporation may, in its sole discretion, permit a Participant to satisfy any tax 
  

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 withholding requirements, in whole or in part, by (i) delivering to the Corporation shares of Common Stock held by such
Participant having a Fair Market Value equal to the amount of the tax or (ii) directing the Corporation to retain shares of Common stock otherwise issuable to the Participant under the Plan. 
  
 12.3 Status of Awards. Awards hereunder shall not be deemed
compensation for purposes of computing benefits under any retirement plan of the Corporation or affiliate and shall not affect any benefits under any other benefit plan now or hereafter in effect under which the availability or amount of benefits is
related to the level of compensation. 
  
 12.4 Waiver of
Restrictions. The Board Committee may, in its sole discretion, based on such factors as the Board Committee may deem appropriate, waive in whole or in part, any remaining restrictions or vesting requirements in connection with any Award
hereunder. 
  
 12.5 Delegation to Management. The Board
Committee may delegate to one or more officers of the Corporation or a committee of officers the right to grant Awards hereunder to employees and consultants who are not officers or directors of the Corporation and to cancel or suspend Awards to
employees and consultants who are not officers or directors of the Corporation. 
  
 12.6 Adjustment of Awards. Subject to Section 11, the Board Committee shall be authorized to make adjustments in performance award criteria or in the terms and conditions of other Awards in recognition of
unusual or nonrecurring events affecting the Corporation or its financial statements or changes in applicable laws, regulations or accounting principles; provided however, that no such adjustment shall impair the rights of any Participant without
his or her consent. The Board Committee may also make Awards hereunder in replacement of, or as alternatives to, Awards previously granted to Participants, including without limitation, previously granted Options having higher Option Prices and
grants or rights under any other plan of the Corporation or of any acquired entity. The Board Committee may correct any defect, supply any omission or reconcile any inconsistency in the Plan or any Award in the manner and to the extent it shall deem
desirable to carry it into effect. In the event the Corporation shall assume outstanding employee benefit awards or the right or obligation to make future such awards in connection with the acquisition of another corporation or business entity, the
Board Committee may, in its discretion, make such adjustments in the terms of Awards under the Plan as it shall deem appropriate. 
  
 12.7 Consideration for Awards. Except as otherwise required in any applicable agreement or by the terms of the Plan, Participants under the Plan
shall not be required to make any payment or provide consideration for an Award other than the rendering of services. 
  
 12.8 Effective Date and Term of Plan. The Plan shall be effective as of September 4, 1998. Unless terminated under the provisions of Section 11
hereof, the Plan shall continue in effect until terminated by the Board. 
  

 9Indenture Agreement

 Exhibit 4.1 

  
 NAVIGANT INTERNATIONAL, INC. 
  
 and 
  
 WELLS FARGO BANK MINNESOTA, N.A., 
 Trustee 
  

  
 INDENTURE 
  
 Dated as of 
  
 November 7, 2003 
  

  
 4.875% Convertible Subordinated Debentures due 2023 
  

 TABLE OF CONTENTS 
  

			
	 	  	PAGE

	 ARTICLE 1
 DEFINITIONS
	  	 
		
	 Section 1.01. Definitions
	  	1
		
	 ARTICLE 2
 ISSUE, DESCRIPTION, EXECUTION, REGISTRATION AND EXCHANGE OF DEBENTURES
	  	 
		
	 Section 2.01. Designation Amount and Issue of Debentures
	  	13
	 Section 2.02. Form of Debentures
	  	13
	 Section 2.03. Date and Denomination of Debentures; Payments of Interest
	  	14
	 Section 2.04. Execution of Debentures
	  	15
	 Section 2.05. Exchange and Registration of Transfer of Debentures; Restrictions on Transfer
	  	16
	 Section 2.06. Mutilated, Destroyed, Lost or Stolen Debentures
	  	22
	 Section 2.07. Temporary Debentures
	  	23
	 Section 2.08. Cancellation of Debentures
	  	23
	 Section 2.09. CUSIP Numbers
	  	23
		
	 ARTICLE 3
 REDEMPTION AND REPURCHASE OF DEBENTURES
	  	 
		
	 Section 3.01. Company’s Right to Redeem
	  	24
	 Section 3.02. Notice of Optional Redemption; Selection of Debentures
	  	24
	 Section 3.03. Payment of Debentures Called for Redemption by the Company
	  	26
	 Section 3.04. Conversion Arrangement on Call for Redemption
	  	26
	 Section 3.05. Repurchase of Debentures by the Company at Option of Holders upon a Fundamental Change
	  	27
	 Section 3.06. Repurchase of Debentures by the Company at Option of Holders on Specified Dates
	  	29
	 Section 3.07. Delivery of Written Notice to Trustee
	  	31
	 Section 3.08. Conditions and Procedures for Repurchase at Option of Holders
	  	31
		
	 ARTICLE 4
 SUBORDINATION OF DEBENTURES
	  	 
		
	 Section 4.01. Agreement to Subordinate
	  	34
	 Section 4.02. Payment Over of Proceeds upon Dissolution, Etc.
	  	34
	 Section 4.03. No Payment When Senior Indebtedness of the Company in Default
	  	35
	 Section 4.04. Subrogation to Rights of Holders of Designated Senior Indebtedness of the Company
	  	36
	 Section 4.05. Provisions Solely to Define Relative Rights
	  	36
	 Section 4.06. Trustee to Effectuate Subordination
	  	37
	 Section 4.07. No Waiver of Subordination Provisions
	  	37

  

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	 Section 4.08. Notice to the Trustee
	  	37
	 Section 4.09. Reliance on Judicial Order or Certificate of Liquidating Agent
	  	38
	 Section 4.10. Trustee Not Fiduciary for Holders of Senior Indebtedness of the Company
	  	38
	 Section 4.11. Rights of Trustee as Holder of Senior Indebtedness of the Company; Preservation of Trustee’s Rights
	  	38
	 Section 4.12. Article Applicable to Paying Agents
	  	38
	 Section 4.13. Amendments
	  	38
		
	 ARTICLE 5
 PARTICULAR COVENANTS OF THE COMPANY
	  	 
		
	 Section 5.01. Payment of Principal and Interest
	  	39
	 Section 5.02. Maintenance of Office or Agency
	  	39
	 Section 5.03. Appointments to Fill Vacancies in Trustee’s Office
	  	39
	 Section 5.04. Provisions as to Paying Agent
	  	40
	 Section 5.05. Existence
	  	40
	 Section 5.06. Rule 144A Information Requirement
	  	41
	 Section 5.07. Stay, Extension and Usury Laws
	  	41
	 Section 5.08. Compliance Certificate
	  	41
	 Section 5.09. Additional Amounts Notice
	  	42
		
	 ARTICLE 6
 DEBENTUREHOLDERS’ LISTS AND REPORTS BY THE COMPANY AND THE TRUSTEE
	  	 
		
	 Section 6.01. Debentureholders’ Lists
	  	42
	 Section 6.02. Preservation and Disclosure of Lists
	  	42
	 Section 6.03. Reports by Trustee
	  	43
	 Section 6.04. Reports by the Company
	  	43
		
	 ARTICLE 7
 REMEDIES OF THE TRUSTEE AND DEBENTUREHOLDERS ON AN EVENT OF
DEFAULT
	  	 
		
	 Section 7.01. Events of Default
	  	43
	 Section 7.02. Payments of Debentures on Default; Suit Therefor
	  	45
	 Section 7.03. Application of Monies Collected by Trustee
	  	47
	 Section 7.04. Proceedings by Debentureholder
	  	48
	 Section 7.05. Proceedings by Trustee
	  	48
	 Section 7.06. Remedies Cumulative and Continuing
	  	49
	 Section 7.07. Direction of Proceedings and Waiver of Defaults by Majority of Debentureholders
	  	49
	 Section 7.08. Notice of Defaults
	  	49
	 Section 7.09. Undertaking to Pay Costs
	  	50
		
	 ARTICLE 8
 THE TRUSTEE
	  	 
		
	 Section 8.01. Duties and Responsibilities of Trustee
	  	50

  

 ii 

			
	 Section 8.02. Reliance on Documents, Opinions, Etc.
	  	52
	 Section 8.03. No Responsibility for Recitals, Etc.
	  	53
	 Section 8.04. Trustee, Paying Agents, Conversion Agents or Registrar May Own Debentures
	  	53
	 Section 8.05. Monies to Be Held in Trust
	  	53
	 Section 8.06. Compensation and Expenses of Trustee
	  	53
	 Section 8.07. Officers’ Certificate as Evidence
	  	54
	 Section 8.08. Conflicting Interests of Trustee
	  	54
	 Section 8.09. Eligibility of Trustee
	  	54
	 Section 8.10. Resignation or Removal of Trustee
	  	54
	 Section 8.11. Acceptance by Successor Trustee
	  	56
	 Section 8.12. Succession by Merger
	  	56
	 Section 8.13. Preferential Collection of Claims
	  	57
		
	 ARTICLE 9
 THE DEBENTUREHOLDERS
	  	 
		
	 Section 9.01. Action by Debentureholders
	  	57
	 Section 9.02. Proof of Execution by Debentureholders
	  	57
	 Section 9.03. Who Are Deemed Absolute Owners
	  	57
	 Section 9.04. Company-owned Debentures Disregarded
	  	58
	 Section 9.05. Revocation of Consents, Future Holders Bound
	  	58
		
	 ARTICLE 10
 MEETINGS OF DEBENTUREHOLDERS
	  	 
		
	 Section 10.01. Purpose of Meetings
	  	59
	 Section 10.02. Call of Meetings by Trustee
	  	59
	 Section 10.03. Call of Meetings by Company or Debentureholders
	  	59
	 Section 10.04. Qualifications for Voting
	  	60
	 Section 10.05. Regulations
	  	60
	 Section 10.06. Voting
	  	60
	 Section 10.07. No Delay of Rights by Meeting
	  	61
		
	 ARTICLE 11
 SUPPLEMENTAL INDENTURES
	  	 
		
	 Section 11.01. Supplemental Indentures Without Consent of Debentureholders
	  	61
	 Section 11.02. Supplemental Indenture with Consent of Debentureholders
	  	62
	 Section 11.03. Effect of Supplemental Indenture
	  	63
	 Section 11.04. Notation on Debentures
	  	64
	 Section 11.05. Evidence of Compliance of Supplemental Indenture to Be Furnished to Trustee
	  	64
		
	 ARTICLE 12
 CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE
	  	 
		
	 Section 12.01. Company May Consolidate on Certain Terms
	  	64

  

 iii 

			
	 Section 12.02. Successor to Be Substituted
	  	65
	 Section 12.03. Opinion of Counsel to Be Given Trustee
	  	65
		
	 ARTICLE 13
 SATISFACTION AND DISCHARGE OF INDENTURE
	  	 
		
	 Section 13.01. Discharge of Indenture
	  	65
	 Section 13.02. Paying Agent to Repay Monies Held
	  	66
	 Section 13.03. Return of Unclaimed Monies
	  	66
		
	 ARTICLE 14
 IMMUNITY OF INCORPORATORS, STOCKHOLDERS, OFFICERS AND DIRECTORS
	  	 
		
	 Section 14.01. Indenture and Debentures Solely Corporate Obligations
	  	66
		
	 ARTICLE 15
 CONVERSION OF DEBENTURES
	  	 
		
	 Section 15.01. Right to Convert
	  	67
	 Section 15.02. Exercise of Conversion Privilege; Settlement of Cash or Common Stock upon Conversion; No
Adjustment for
 Interest or Dividends
	  	69
	 Section 15.03. Cash Payments in Lieu of Fractional Shares
	  	73
	 Section 15.04. Conversion Rate
	  	73
	 Section 15.05. Adjustment of Conversion Rate
	  	73
	 Section 15.06. Effect of Reclassification, Consolidation, Merger or Sale
	  	79
	 Section 15.07. Taxes on Shares Issued
	  	80
	 Section 15.08. Reservation of Shares, Shares to Be Fully Paid; Compliance with Governmental Requirements;
 Listing of Common Stock
	  	80
	 Section 15.09. Responsibility of Trustee
	  	81
	 Section 15.10. Notice to Holders Prior to Certain Actions
	  	81
	 Section 15.11. Stockholder Rights Plans
	  	82
		
	 ARTICLE 16
 MISCELLANEOUS PROVISIONS
	  	 
		
	 Section 16.01. Confidentiality Exception
	  	82
	 Section 16.02. Provisions Binding on Company’s Successors
	  	83
	 Section 16.03. Official Acts by Successor Corporation
	  	83
	 Section 16.04. Addresses for Notices, Etc.
	  	83
	 Section 16.05. Governing Law
	  	83
	 Section 16.06. Evidence of Compliance with Conditions Precedent, Certificates to Trustee
	  	83
	 Section 16.07. Legal Holidays
	  	84
	 Section 16.08. Company Responsible for Making Calculations
	  	84
	 Section 16.09. Trust Indenture Act
	  	84
	 Section 16.10. No Security Interest Created
	  	84
	 Section 16.11. Benefits of Indenture
	  	85
	 Section 16.12. Table of Contents, Headings, Etc.
	  	85

  

 iv 

			
	 Section 16.13. Authenticating Agent
	  	85
	 Section 16.14. Execution in Counterparts
	  	86
	 Section 16.15. Severability
	  	86
		
	 Exhibit A         Form of Debenture
	  	A-1

  

 v 

  
 INDENTURE 

 
 INDENTURE dated as of November 7, 2003 between Navigant International,
Inc., a Delaware corporation (hereinafter called the “Company”), having its principal office at 84 Inverness Circle East, Englewood, CO 80112, and Wells Fargo Bank Minnesota, N.A., a national banking association (hereinafter called
the “Trustee”). 
  
 WITNESSETH: 

 
 WHEREAS, for its lawful corporate purposes, the Company has duly
authorized the issue of its 4.875% Convertible Subordinated Debentures due 2023 (hereinafter called the “Debentures”), in an aggregate principal amount not to exceed $72,000,000, and, to provide the terms and conditions upon which
the Debentures are to be authenticated, issued and delivered, the Company has duly authorized the execution and delivery of this Indenture. 
  
 WHEREAS, the Debentures, the certificate of authentication to be borne by the Debentures, a form of assignment, a form of fundamental change repurchase
election, a form of Company repurchase election and a form of conversion notice to be borne by the Debentures are to be substantially in the forms hereinafter provided for. 
  
 WHEREAS, all acts and things necessary to make the Debentures, when executed by the Company and authenticated and delivered
by the Trustee or a duly authorized authenticating agent, as in this Indenture provided, the valid, binding and legal obligations of the Company, and to constitute this Indenture a valid agreement according to its terms, have been done and
performed, and the execution of this Indenture and the issue hereunder of the Debentures have in all respects been duly authorized. In addition, all things necessary to duly authorize the issuance of the Common Stock of the Company initially
issuable upon the conversion of the Debentures, and to duly reserve for issuance the number of shares of Common Stock initially issuable upon such conversion have been done. 
  
 NOW, THEREFORE, THIS INDENTURE WITNESSETH: 
  
 That in order to declare the terms and conditions upon which the Debentures are, and are to be, authenticated, issued and
delivered, and in consideration of the premises and of the purchase and acceptance of the Debentures by the holders thereof, the Company covenants and agrees with the Trustee for the equal and proportionate benefit of the respective holders from
time to time of the Debentures (except as otherwise provided below), as follows: 
  
 ARTICLE 1 
 DEFINITIONS 
  
 Section 1.01. Definitions. The terms defined in this Section 1.01 (except as herein otherwise expressly provided or
unless the context otherwise requires) for all purposes of this Indenture and of any indenture supplemental hereto shall have the respective meanings specified in this Section 1.01. All other terms used in this Indenture that are defined in the
Trust Indenture Act or which are by reference therein defined in the Securities Act (except as herein otherwise expressly provided or unless the context otherwise requires) shall have the meanings assigned to such terms in the Trust Indenture Act
and in the Securities Act as in force at the date of the 

  

 
execution of this Indenture. The words “herein”, “hereof”, “hereunder” and words of similar import refer
to this Indenture as a whole and not to any particular Article, Section or other Subdivision. The terms defined in this Article include the plural as well as the singular. 
  
 “Additional Amounts” has the meaning specified for “Liquidated Damages” in Section 3(a) of the
Registration Rights Agreement. 
  
 “Additional Amounts
Notice” has the meaning specified in Section 5.09. 
  
 “Adjustment Event” has the meaning specified in Section 15.05(m). 
  
 “Agent Members” has the meaning specified in Section 2.05(b)(v). 
  
 “Affiliate” of any specified Person means any other Person directly or indirectly controlling or controlled by or under direct or
indirect common control with such specified Person. For the purposes of this definition, “control”, when used with respect to any specified Person, means the power to direct or cause the direction of the management and policies of
such Person, directly or indirectly, whether through the ownership of voting securities, by contract or otherwise, and the terms “controlling” and “controlled” have meanings correlative to the foregoing. 

 
 “Bankruptcy Law” means Title 11, United States Bankruptcy
Code of 1978, as amended, or any similar United States federal or state law relating to the bankruptcy, insolvency, receivership, winding-up, liquidation, reorganization or relief of debtors or any amendment to, succession to or change in any such
law. 
  
 “Board of Directors” means the
Board of Directors of the Company or a committee of such Board duly authorized to act for it hereunder. 
  
 “Board Resolution” means a resolution duly adopted by the Board of Directors, a copy of which, certified by the Secretary or an Assistant
Secretary of the Company to be in full force and effect on the date of such certification, shall have been delivered to the Trustee. 
  
 “Business Day” means any day, other than a Saturday or Sunday, that is neither a legal holiday nor a day on which commercial banks are
authorized or required by law, regulation or executive order to close in The City of New York. 
  
 “capital stock” of any Person means any and all shares (including ordinary shares underlying any American Depositary Shares), interests, participations or other equivalents however designated of
corporate stock or other equity participations, including partnership interests, whether general or limited, of such Person and any rights (other than debt securities convertible or exchangeable into an equity interest), warrants or options to
acquire an equity interest in such Person.  
  
 “cash” has the meaning specified in Section 3.05(a). 
  
 “Cash Amount” has the meaning specified in Section 15.02(h). 
  

 2 

 “Cash Settlement Averaging Period” has the meaning specified in Section 15.02(g)(i).

  
 “Cash Settlement Notice Period” has the
meaning specified in 15.02(g)(i). 
  
 “Commission” means the Securities and Exchange Commission, as from time to time constituted under the Exchange Act, or, if at any time after the execution of this Indenture such Commission is not existing and performing the
duties now assigned to it under the Trust Indenture Act, then the body performing such duties at such time. 
  
 “Common Stock” means any stock of any class of the Company which has no preference in respect of dividends or of amounts payable in the
event of any voluntary or involuntary liquidation, dissolution or winding up of the Company and which is not subject to redemption by the Company. Subject to the provisions of Section 15.06, however, shares issuable upon conversion of Debentures
shall include only shares of the class designated as common stock of the Company at the date of this Indenture (namely, the Common Stock, par value $.001) or shares of any class or classes resulting from any reclassification or reclassifications
thereof and which have no preference in respect of dividends or of amounts payable in the event of any voluntary or involuntary liquidation, dissolution or winding up of the Company and which are not subject to redemption by the Company;
provided that if at any time there shall be more than one such resulting class, the shares of each such class then so issuable upon conversion shall be substantially in the proportion which the total number of shares of such class resulting
from all such reclassifications bears to the total number of shares of all such classes resulting from all such reclassifications. 
  
 “Company” means the corporation named as the “Company” in the first paragraph of this Indenture, and, subject to the provisions
of Article 12 and Section 15.06, shall include its successors and assigns. 
  
 “Company Repurchase Date” has the meaning specified in Section 3.06(a). 
  
 “Company Repurchase Election” has the meaning specified in Section 3.06(c)(i). 
  
 “Company Repurchase Notice” has the meaning specified in
Section 3.06(b). 
  
 “Company Repurchase Price”
has the meaning specified in Section 3.06(a). 
  
 “Conversion Agent” means the Trustee or such other office or agency designated by the Company where Debentures may be presented for conversion. 
  
 “Conversion Date” has the meaning specified in Section 15.02(c). 
  
 “Conversion Notice” has the meaning specified in Section
15.02(a). 
  
 “Conversion Obligation” has the
meaning specified in Section 15.02(g)(i). 
  
 “Conversion
Price” as of any day means $1,000 divided by the Conversion Rate as of such date and rounded to the nearest cent. The Conversion Price shall initially be approximately $16.55 per share of Common Stock. 
  

 3 

 “Conversion Rate” has the meaning specified in Section 15.04. 
  
 “Conversion Retraction Period” has the meaning specified in
Section 15.02(g)(i). 
  
 “Corporate Trust Office”
or other similar term means the designated office of the Trustee at which at any particular time its corporate trust business as it relates to this Indenture shall be administered, which office is, at the date as of which this Indenture is dated,
located at 213 Court Street, Suite 703, Middletown, CT 06457, Fax: (860) 704-6219.  
  
 “Credit Agreement” means: 
  
 (1) prior to the repayment in full and termination of all commitments under the Amended and Restated Credit Agreement, dated as of August 6, 1999, among the Company, the subsidiaries of the Company identified therein,
the lenders named therein and Bank of America, N.A. (successor to NationsBank, N.A.), as administrative agent, such agreement; and 
  
 (2) thereafter, the Credit Agreement, dated as of October 31, 2003, among the Company, the subsidiaries of the Company identified therein, the lenders
named therein and Bank of America, N.A., as administrative agent; 
  
 in each
case, including any debentures, guarantees, collateral documents, instruments and agreements executed in connection therewith, and in each case as amended (including any amendment and restatement thereof), modified, extended, renewed, refunded,
waived, deferred, substituted or replaced or refinanced from time to time, including any agreement extending the maturity of, refinancing, replacing or otherwise restructuring (including increasing the amount of available borrowings thereunder or
adding subsidiaries of the Company as additional borrowers or guarantors thereunder), all or any portion of the Indebtedness under such agreements or any successor or replacement agreements and whether by the same or any other agents, creditor,
lender or group of creditors or lenders. 
  
 “Current
Market Price” per share of Common Stock means, with respect to any date of determination, the average of the Last Reported Sale Price of the Common Stock for the ten (10) consecutive Trading Days ending not later than the earlier of the
date of determination and the day before the Ex-Dividend Date with respect to the issuance or distribution requiring such computation. If another issuance or distribution to which Section 15.05 applies occurs during the period applicable for
calculating “Current Market Price” pursuant to this definition, “Current Market Price” shall be calculated for such period in a manner determined by the Board of Directors to reflect the impact of such issuance,
distribution, subdivision or combination on the Last Reported Sale Price of the Common Stock during such period. 
  
 “Custodian” means Wells Fargo Bank Minnesota, N.A., a national banking association, as custodian with respect to the Debentures in global
form, or any successor entity thereto. 
  
 “Debenture” or “Debentures” means any Debenture or Debentures, as the case may be, authenticated and delivered under this Indenture, including any Global Debenture. 
  
 “Debenture Register” has the meaning specified in Section
2.05(a). 
  

 4 

 “Debenture Registrar” has the meaning specified in Section 2.05(a). 
  
 “Debentureholder” or “holder” as applied to
any Debenture, or other similar terms (but excluding the term “beneficial holder”), means any Person in whose name a particular Debenture is registered at the time on the Debenture Registrar’s books. 
  
 “Default” means any event that is, or after notice or
passage of time, or both, would be, an Event of Default. 
  
 “Defaulted Interest” has the meaning specified in Section 2.03. 
  
 “Depositary” means the clearing agency registered under the Exchange Act that is designated to act as the Depositary for the Global Debentures. The Depository Trust Company shall be the initial
Depositary, until a successor shall have been appointed and become such pursuant to the applicable provisions of this Indenture, and thereafter, “Depositary” shall mean or include such successor. 
  
 “Designated Senior Indebtedness” means Senior Indebtedness
under the Credit Agreement, the Senior Secured Note Agreements and, upon repayment in full of all obligations and termination of all commitments under the Credit Agreement and repayment in full of all indebtedness under the Senior Secured Note
Agreements, the Company’s obligations under any other particular Senior Indebtedness that expressly provides that such Senior Indebtedness shall be “Designated Senior Indebtedness” of the Company for purposes of this Indenture.

  
 “Determination Date” has the meaning
specified in Section 15.05(m). 
  
 “Event of
Default” has the meaning specified in Section 7.01. 
  
 “Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder, as in effect from time to time. 
  
 “Ex-Dividend Date” means, with respect to any issuance or distribution on shares of Common Stock, the first
date on which the shares of Common Stock trade regular way on the principal securities market on which the shares of Common Stock are then traded without the right to receive such issuance or distribution. 
  
 “Expiration Time” has the meaning specified in Section
15.05(f). 
  
 “Fair Market Value” means, with
respect to any asset or property, the sale value that would be obtained in an arm’s-length transaction between an informed and willing seller under no compulsion to sell and an informed and willing buyer under no compulsion to buy. Unless
otherwise indicated, Fair Market Value shall be determined in good faith by the Board of Directors. 
  
 “Final Notice Date” has the meaning specified in Section 15.02(g). 
  

 5 

 “Fundamental Change” means the occurrence of any of the following: 
  
 (i) a “person” or “group”, within the
meaning of Section 13(d) of the Exchange Act other than the Company, its subsidiaries or its or their employee benefit plans, files a Schedule TO or any other schedule, form or report under the Exchange Act disclosing that such person or group has
become the direct or indirect ultimate “beneficial owner”, as defined in Rule 13d-3 under the Exchange Act, of more than 50% of the total voting power of all shares of the Company’s capital stock that are entitled to vote generally in
the election of directors; or 
  
 (ii)
consummation of any share exchange, consolidation or merger of the Company or any sale, lease or other transfer in one transaction or a series of transactions of all or substantially all of the consolidated assets of the Company and its
subsidiaries, taken as a whole, to any person other than the Company or one or more of its subsidiaries, pursuant to which the Common Stock will be converted into cash, securities or other property; provided, however, that a
transaction where the holders of the Company’s voting capital stock immediately prior to such transaction have, directly or indirectly, more than 50% of the aggregate voting power of all shares of capital stock of the continuing or surviving
corporation or transferee entitled to vote generally in the election of directors immediately after such event shall not be a Fundamental Change. 
  
 A Fundamental Change will not be deemed to have occurred in respect of either of the foregoing, however, if either: 
  
 (i) the Last Reported Sale Price of the Common Stock for any
five (5) Trading Days within the ten (10) consecutive Trading Days ending immediately before the later of the Fundamental Change or the public announcement thereof equals or exceeds 105% of the Conversion Price of the Debentures immediately before
the Fundamental Change or the public announcement thereof, or 
  
 (ii) at least 90% of the consideration, excluding cash payments for fractional shares, in the transaction or transactions constituting the Fundamental Change consists of shares of capital stock traded on a national
securities exchange or quoted on the Nasdaq National Market or which will be so traded or quoted when issued or exchanged in connection with a Fundamental Change (these securities being referred to as “publicly traded securities”)
and as a result of this transaction or transactions the Debentures become convertible into such publicly traded securities, excluding cash payments for fractional shares. 
  
 “Fundamental Change Repurchase Date” has the meaning specified in Section 3.05(a). 
  
 “Fundamental Change Repurchase Election” has the meaning
specified in Section 3.05(c)(i). 
  
 “Fundamental Change
Repurchase Notice” has the meaning specified in Section 3.05(b). 
  
 “Fundamental Change Repurchase Price” has the meaning provided in Section 3.05(a). 
  

 6 

 “Global Debenture” has the meaning specified in Section 2.02. 
  
 “Guarantee” means a guarantee (other than by endorsement of
negotiable instruments for collection in the ordinary course of business), direct or indirect, in any manner (including, without limitation, letters of credit and reimbursement agreements in respect thereof), of all or any part of Indebtedness.

  
 “Indebtedness” means, with respect to any
Person, without duplication: 
  
 (1) all
indebtedness, obligations and other liabilities of such Person for borrowed money, including commitment or standby fees, enforcement expenses, collateral protection expenses and other reimbursement indemnity obligations with respect to such
indebtedness, overdrafts, foreign exchange contracts, currency exchange agreements, interest rate protection agreements, and any loans or advances from banks, or evidenced by bonds, debentures, notes or similar instruments, other than any account
payable or other accrued current liability or obligation of such Person incurred in the ordinary course of business in connection with the obtaining of materials or services; 
  
 (2) obligations of such Person with respect to letters of credit, bank guarantees or bankers’
acceptances; 
  
 (3) obligations of such Person
in respect of leases required in conformity with generally accepted accounting principles to be accounted for as capitalized lease obligations; 
  
 (4) all obligations and other liabilities of such Person under any lease or related document in connection with the lease of real property
that provides that such Person is contractually obligated to purchase or cause a third party to purchase the leased property and thereby guarantee a minimum residual value of the leased property to the lessor and such Person’s obligations under
the lease or related document to purchase or to cause a third party to purchase the leased property; 
  
 (5) all obligations of such Person with respect to an interest rate or other swap, cap or collar agreement or foreign currency hedge,
exchange or purchase agreement; 
  
 (6) all
direct or indirect guarantees or similar agreements in respect of such Person’s obligations or liabilities to purchase, acquire or otherwise assure a creditor against loss in respect of, indebtedness, obligations or liabilities of others of the
type described in paragraphs (1) through (5) above; 
  
 (7) any obligations of such Person described in paragraphs (1) through (5) above secured by any mortgage, pledge, lien or other encumbrance existing on property which is owned or held by such Person; and 
  
 (8) any renewals, extensions, refundings, refinancings,
restructurings, amendments or modifications to paragraphs (1) through (7) above. 
  

 7 

 “Indenture” means this instrument as originally executed or, if amended or supplemented
as herein provided, as so amended or supplemented. 
  
 “Initial Purchasers” means Banc of America Securities LLC, McDonald Investments Inc., LaSalle Debt Capital Markets, a division of ABN AMRO Financial Services, Inc., Scotia Capital (USA) Inc., C.E. Unterberg, Towbin and
Wells Fargo Securities, LLC. 
  
 “interest”
means, when used with respect to the Debentures, any interest payable under the terms of the Debentures and Additional Amounts, if any, payable under the terms of the Registration Rights Agreement. 
  
 “Interest Payment Date” means May 1 and November 1 of each
year, commencing May 1, 2004. 
  
 “Last Reported Sale
Price” of the Common Stock on any date means the closing sale price per share (or if no closing sale price is reported, the average of the bid and asked prices or, if more than one in either case, the average of the average bid and the
average asked prices) on that date as reported by the Nasdaq National Market or, if the Common Stock is not reported by the Nasdaq National Market, as reported in composite transactions for the principal United States securities exchange on which
the Common Stock is traded. If the Common Stock is not reported by the Nasdaq National Market and not listed for trading on a U.S. national or regional securities exchange on the relevant date, the “Last Reported Sale Price” will be
the last quoted bid price for the Common Stock in the over-the-counter market on the relevant date as reported by the National Quotation Bureau Incorporated or similar organization. If the Common Stock is not so quoted, the “Last Reported
Sale Price” will be the average of the mid-point of the last bid and asked prices for the Common Stock on the relevant date quoted by each of at least three independent nationally recognized investment banking firms selected by the Company
for this purpose. 
  
 “Lien” means, with respect
to any asset, mortgage, lien, pledge, charge, security interest or encumbrance of any kind in respect of such asset given to secure Indebtedness, whether or not filed, recorded or otherwise perfected under applicable law (including any conditional
sale or other title retention agreement, any lease in the nature thereof, any option or other agreement to sell or give a security interest in and any filing of or agreement to give any financing statement under the Uniform Commercial Code (or
equivalent statutes) of any jurisdiction with respect to any such lien, pledge, charge or security interest). 
  
 “non-electing share” has the meaning specified in Section 15.06. 
  
 “Officers’ Certificate”, when used with respect to the Company, means a certificate signed by any two
of the Chairman of the Board, the Chief Executive Officer, the Chief Operating Officer, the President, the Chief Financial Officer, any Vice President (whether or not designated by a number or numbers or word or words added before or after the title
“Vice President”), the Treasurer or the Secretary of the Company. 
  
 “Opinion of Counsel” means an opinion in writing signed by legal counsel, who may be an employee of or counsel to the Company, or other counsel reasonably acceptable to the Trustee. 
  

 8 

 “Original Issuance Date” means the date on which the Debentures are first authenticated
and delivered under this Indenture. 
  
 “outstanding”, when used with reference to Debentures and subject to the provisions of Section 9.04, means, as of any particular time, all Debentures authenticated and delivered by the Trustee under this Indenture, except:

  
 (a) Debentures theretofore canceled by the
Trustee or delivered to the Trustee for cancellation; 
  
 (b) Debentures, or portions thereof, (i) for the redemption of which monies in the necessary amount shall have been deposited in trust with the Trustee or with any Paying Agent (other than the Company) or (ii) which shall have been
otherwise discharged in accordance with Article 13; 
  
 (c) Debentures in lieu of which, or in substitution for which, other Debentures shall have been authenticated and delivered pursuant to the terms of Section 2.06; and 
  
 (d) Debentures converted into Common Stock pursuant to Article 15 and Debentures deemed not outstanding
pursuant to Article 3. 
  
 “Paying Agent” means
the Trustee or such other office or agency designated by the Company where Debentures may be presented for payment. 
  
 “Payment Blockage Period” has the meaning specified in Section 4.03(b). 
  
 “Payment Default” has the meaning specified in Section 4.03(a). 
  
 “Person” means any corporation, association, partnership,
limited liability company, individual, joint venture, joint stock company, trust, unincorporated organization or government, or any agency or political subdivision thereof. 
  
 “PORTAL Market” means the Private Offerings, Resales and Trading through Automated Linkages system operated
by the National Association of Securities Dealers, Inc. or any successor thereto. 
  
 “Predecessor Debenture” of any particular Debenture means every previous Debenture evidencing all or a portion of the same debt as that evidenced by such particular Debenture, and, for the purposes of
this definition, any Debenture authenticated and delivered under Section 2.06 in lieu of a lost, destroyed or stolen Debenture shall be deemed to evidence the same debt as the lost, destroyed or stolen Debenture that it replaces. 
  
 “Principal Value Conversion” has the meaning specified in
Section 15.01(a). 
  
 “Proceeding” has the
meaning specified in Section 4.02. 
  
 “Purchased
Shares” has the meaning specified in Section 15.05(f). 
  

 9 

 “Redemption Date” has the meaning specified in Section 3.02(a). 
  
 “Redemption Notice” has the meaning specified in Section
3.02(a). 
  
 “Redemption Price” has the meaning
specified in Section 3.01. 
  
 “Registration Rights
Agreement” means the Registration Rights Agreement, dated as of November 7, 2003, between the Company and the Initial Purchasers, as amended from time to time in accordance with its terms. 
  
 “Regular Record Date” means, with respect to each Interest
Payment Date, the close of business on the April 15 or October 15 preceding such Interest Payment Date (whether or not a Business Day). 
  
 “Repurchase Date” means the Fundamental Change Repurchase Date or the Company Repurchase Date, as the context requires. 
  
 “Repurchase Election” means the Fundamental Change
Repurchase Election or the Company Repurchase Election, as the context requires. 
  
 “Repurchase Notice” means the Fundamental Change Repurchase Notice or the Company Repurchase Notice, as the context requires. 
  
 “Repurchase Price” means the Fundamental Change Repurchase Price or the Company Repurchase Price, as the
context requires. 
  
 “Responsible Officer”
means, when used with respect to the Trustee, any officer within the corporate trust department of the Trustee with direct responsibility for the administration of this Indenture and also means, with respect to a particular corporate trust matter,
any other officer to whom such matter is referred because of such person’s knowledge of or any familiarity with the particular subject. 
  
 “Restricted Securities” has the meaning specified in Section 2.05(c). 
  
 “Rule 144A” means Rule 144A as promulgated under the Securities Act. 
  
 “Securities Act” means the Securities Act of 1933, as
amended, and the rules and regulations promulgated thereunder, as in effect from time to time. 
  
 “Securities Payment” has the meaning specified in Section 4.02. 
  
 “Senior Indebtedness” means: 
  
 (1) all obligations now or hereafter existing under or in respect of the Credit Agreement and the Senior Secured Note Agreements, whether
for principal, premium, if any, interest (including interest accruing after the filing of, or which would have accrued but for the filing of, a petition by or against the Company under Bankruptcy Law, at the rate provided in the document with
respect thereto, whether or not such interest is 

  

 10 

 
allowed as a claim after such filing in any proceeding under such law) and other amounts due in connection therewith (including, without limitation, any
fees, premiums, expenses, reimbursement obligations with respect to letters of credit and indemnities); and 
  
 (2) the principal, premium, if any, and interest (including interest accruing after the filing of, or which would have accrued but for the
filing of, a petition by or against the Company under Bankruptcy Law, at the rate provided in the document with respect thereto, whether or not such interest is allowed as a claim after such filing in any proceeding under such law) on all our
Indebtedness (other than the Debentures), whether outstanding on the Original Issuance Date or thereafter created, incurred or assumed, unless, in the case of any particular Indebtedness, the instrument creating or evidencing the same or pursuant to
which the same is outstanding expressly provides that such Indebtedness shall not be senior in right of payment to the Debentures. 
  
 Notwithstanding the foregoing, “Senior Indebtedness” shall not include: 
  
 (a) Indebtedness that expressly provides that it shall not be senior in right of payment to the Debentures
or expressly provides that it is on the same basis or junior to the Debentures; 
  
 (b) Indebtedness of the Company to any of the Company’s majority-owned subsidiaries; and 
  
 (c) the Debentures. 
  
 “Senior Nonmonetary Default” has the meaning specified in
Section 4.03(b). 
  
 “Senior Secured Note
Agreement” means the Note Purchase Agreements, each dated November 15, 2000, among the Company, subsidiaries of the Company identified therein and the lenders named therein, including any notes, guarantees, collateral documents, instruments
and agreements executed in connection therewith, and in each case as amended. 
  
 “Special Record Date” has the meaning specified in Section 2.03. 
  
 “Spin-off Market Price” per share of Common Stock of the Company or the capital stock of, or similar equity interests in, a subsidiary or
other business unit of the Company on any day means the average of the daily Last Reported Sale Price of the Common Stock or such capital stock or similar equity interests for the ten (10) consecutive Trading Days commencing on and including the
fifth Trading Day after the Ex-Dividend Date with respect to the issuance or distribution requiring such computation. 
  
 “Stated Maturity” means November 1, 2023. 
  
 “Stock Record Date” means, with respect to any dividend, distribution or other transaction or event in which the holders of Common Stock
have the right to receive any cash, securities or other property or in which the Common Stock (or other applicable security) is exchanged for or converted into any combination of cash, securities or other property, the date 

  

 11 

 
fixed for determination of stockholders entitled to receive such cash, securities or other property (whether such date is fixed by the Board of Directors or
by statute, contract or otherwise). 
  
 “subsidiary” means, with respect to any Person, (a) any corporation, association or other business entity of which more than 50% of the total voting power of shares of capital stock or other equity interest entitled
(without regard to the occurrence of any contingency) to vote in the election of directors, managers or trustees thereof is at the time owned or controlled, directly or indirectly, by such Person or one or more of the other subsidiaries of that
Person (or a combination thereof) and (b) any partnership (i) the sole general partner or managing general partner of which is such Person or a subsidiary of such Person or (ii) the only general partners of which are such Person or of one or more
subsidiaries of such Person (or any combination thereof). 
  
 “Trading Day” means a day during which trading in securities generally occurs on the Nasdaq National Market or, if the applicable security is not reported by the Nasdaq National Market, on the principal other national or
regional securities exchange on which the applicable security is then listed or, if the applicable security is not listed on a national or regional securities exchange, on the National Association of Securities Dealers Automated Quotation System or,
if the applicable security is not quoted on the National Association of Securities Dealers Automated Quotation System, on the principal other market on which the applicable security is then traded (provided that no day on which trading of the
applicable security is suspended on such exchange or other trading market will count as a trading day). 
  
 “Trading Price” means, as of any date of determination, the average of the secondary market bid quotations obtained by the Trustee for
$5,000,000 principal amount of Debentures at approximately 3:30 p.m., New York City time, on such determination date from three independent nationally recognized securities dealers (none of which shall be an Affiliate of the Company) in The City of
New York (or such other place that may be determined from time to time by the Company) selected by the Company; provided, however, if at least three such bids cannot reasonably be obtained by the Trustee, but two such bids are
obtained, then the average of the two bids shall be used, and if only one such bid can reasonably be obtained by the Trustee, that one bid shall be used. If the Trustee cannot reasonably obtain at least one bid for $5,000,000 principal amount of
Debentures from an independent nationally recognized securities dealer or, in the reasonable judgment of the Company, the bid quotations are not indicative of the secondary market value of the Debentures, then the Trading Price per $1,000 principal
amount of Debentures will be deemed to be less than 98% of the product of the Last Reported Sale Price of the Common Stock and the Conversion Rate. 
  
 “Trust Indenture Act” means the Trust Indenture Act of 1939, as amended, as it was in force at the date of this Indenture, except as
provided in Sections 11.03 and 15.06; provided that if the Trust Indenture Act of 1939 is amended after the date hereof, the term “Trust Indenture Act” shall mean, to the extent required by such amendment, the Trust Indenture
Act of 1939 as so amended. 
  
 “Trustee” means
Wells Fargo Bank Minnesota, N.A., a national banking association, and its successors and any corporation resulting from or surviving any consolidation or merger to 

  

 12 

 
which it or its successors may be a party and any successor trustee at the time serving as successor trustee hereunder. 
  
 ARTICLE 2 
 ISSUE, DESCRIPTION, EXECUTION, REGISTRATION AND EXCHANGE OF DEBENTURES

  
 Section 2.01. Designation Amount and Issue of
Debentures. The Debentures shall be designated as “4.875% Convertible Subordinated Debentures due 2023”. Debentures not to exceed the aggregate principal amount of $60,000,000 (up to $72,000,000 if Banc of America Securities LLC
exercises its option pursuant to the Purchase Agreement dated November 3, 2003 between the Company and the Initial Purchasers) (except pursuant to Sections 2.05, 2.06, 3.05, 3.06 and 15.02 hereof) upon the execution of this Indenture, or from time
to time thereafter, may be executed by the Company and delivered to the Trustee for authentication, and the Trustee shall thereupon authenticate and deliver said Debentures to or upon the written order of the Company, signed by its Chairman of the
Board, its Chief Executive Officer, its Chief Operating Officer, its President, its Chief Financial Officer, any Vice President (whether or not designated by a number or numbers or word or words added before or after the title “Vice
President”), its Treasurer, its Secretary or any Assistant Secretary. 
  
 Section 2.02. Form of Debentures. The Debentures and the Trustee’s certificate of authentication to be borne by such Debentures shall be substantially in the form set forth in Exhibit A. The terms and
provisions contained in the form of Debenture attached as Exhibit A hereto shall constitute, and are hereby expressly made, a part of this Indenture and, to the extent applicable, the Company and the Trustee, by their execution and delivery of this
Indenture, expressly agree to such terms and provisions and to be bound thereby. 
  
 Any of the Debentures may have such letters, numbers or other marks of identification and such notations, legends, endorsements or changes as the officers executing the same may approve (execution thereof to be
conclusive evidence of such approval) and as are not inconsistent with the provisions of this Indenture, or as may be required by the Custodian, the Depositary or by National Association of Securities Dealers, Inc. in order for the Debentures to be
tradable on the PORTAL Market or as may be required for the Debentures to be tradable on any other market developed for trading of securities pursuant to Rule 144A or as may be required to comply with any applicable law or with any rule or
regulation made pursuant thereto or with any rule or regulation of any securities exchange or automated quotation system on which the Debentures may be listed, or to conform to usage, or to indicate any special limitations or restrictions to which
any particular Debentures are subject. 
  
 So long as the
Debentures are eligible for book-entry settlement with the Depositary, or unless otherwise required by law, or otherwise contemplated by Section 2.05(a), all of the Debentures will be represented by one or more Debentures in global form registered
in the name of the Depositary or the nominee of the Depositary (a “Global Debenture”). The transfer and exchange of beneficial interests in any such Global Debenture shall be effected through the Depositary in accordance with this
Indenture and the applicable procedures of the Depositary. Except as provided in Section 2.05(a), beneficial holders of a Global Debenture shall not be entitled to have certificates registered in their names, will not receive or be entitled to
receive 

  

 13 

 
physical delivery of certificates in definitive form and will not be considered holders of such Global Debenture. 
  
 Any Global Debenture shall represent such of the outstanding Debentures as
shall be specified therein and shall provide that it shall represent the aggregate amount of outstanding Debentures from time to time endorsed thereon and that the aggregate amount of outstanding Debentures represented thereby may from time to time
be increased or reduced to reflect redemptions, repurchases, conversions, transfers or exchanges permitted hereby. Any endorsement of a Global Debenture to reflect the amount of any increase or decrease in the amount of outstanding Debentures
represented thereby shall be made by the Trustee or the Custodian, at the direction of the Trustee, in such manner and upon instructions given by the holder of such Debentures in accordance with this Indenture. Payment of principal of and interest
on any Global Debenture shall be made to the holder of such Debenture. 
  
 Section 2.03. Date and Denomination of Debentures; Payments of Interest. The Debentures shall be issuable in registered form without coupons in denominations of $1,000 principal amount and integral multiples thereof. Each Debenture
shall be dated the date of its authentication and shall bear interest from the date specified on the face of the form of Debenture attached as Exhibit A hereto. Interest on the Debentures shall be computed on the basis of a 360-day year comprised of
twelve 30-day months. 
  
 The Person in whose name any Debenture
(or its Predecessor Debenture) is registered on the Debenture Register at the close of business on the Regular Record Date with respect to an Interest Payment Date shall be entitled to receive the interest payable on such Interest Payment Date,
except that the interest payable upon redemption or repurchase will be payable to the Person to whom principal is payable pursuant to such redemption or repurchase (unless the Redemption Date or the Repurchase Date, as the case may be, is an
Interest Payment Date, in which case the semiannual payment of interest becoming due on such date shall be payable to the holders of such Debentures registered as such on the applicable Regular Record Date). Notwithstanding the foregoing, if any
Debenture (or portion thereof) is converted into Common Stock during the period after a Regular Record Date to, but excluding, the next succeeding Interest Payment Date and such Debenture (or portion thereof) has been called or tendered for
redemption on a Redemption Date which occurs during such period, the Company shall not be required to pay interest on such Interest Payment Date in respect of any such Debenture (or portion thereof), except as provided in Section 15.02. Interest
shall be payable at the office of the Company maintained by the Company for such purposes in the Borough of Manhattan, City of New York, which shall initially be an office or agency of the Trustee. The office of Wells Fargo Bank, c/o Deutsche Bank,
14 Wall Street, 4th Floor, Window #44, New York, NY 10005, Attention: John Maloney/Account 092192, Wells Fargo Account # 15206900 (Navigant International), (212) 618-2319 shall initially be such office or agency for all of the aforesaid purposes.
The Company shall pay interest (i) on any Debentures in certificated form by check mailed to the address of the Person entitled thereto as it appears in the Debenture Register (or upon written notice, by wire transfer in immediately available funds,
if such Person is entitled to interest on Debentures with an aggregate principal amount in excess of $2,000,000) or (ii) on any Global Debenture by wire transfer of immediately available funds to the account of the Depositary or its nominee.

  

 14 

 Any interest on any Debenture which is payable, but is not punctually paid or duly provided for, on any
May 1 or November 1 (herein called “Defaulted Interest”) shall forthwith cease to be payable to the Debentureholder on the relevant Regular Record Date by virtue of his having been such Debentureholder, and such Defaulted Interest
shall be paid by the Company, at its election in each case, as provided in clause (1) or (2) below: 
  
 (1) The Company may elect to make payment of any Defaulted Interest to the Persons in whose names the Debentures (or their respective
Predecessor Debentures) are registered at the close of business on a “Special Record Date” for the payment of such Defaulted Interest, which shall be the date fixed in the following manner. The Company shall notify the Trustee in
writing of the amount of Defaulted Interest proposed to be paid on each Debenture and the date of the proposed payment (which shall be not less than twenty-five (25) days after the receipt by the Trustee of such notice, unless the Trustee shall
consent to an earlier date), and at the same time the Company shall deposit with the Trustee an amount of money equal to the aggregate amount to be paid in respect of such Defaulted Interest or shall make arrangements satisfactory to the Trustee for
such deposit on or prior to the date of the proposed payment, such money when deposited on or prior to the date of the proposed payment to be held in trust for the benefit of the Persons entitled to such Defaulted Interest as in this clause
provided. Thereupon the Trustee shall fix a Special Record Date for the payment of such Defaulted Interest which shall be not more than fifteen (15) days and not less than ten (10) days prior to the date of the proposed payment, and not less than
ten (10) days after the receipt by the Trustee of the notice of the proposed payment. The Trustee shall promptly notify the Company of such Special Record Date and, in the name and at the expense of the Company, shall cause notice of the proposed
payment of such Defaulted Interest and the Special Record Date therefor to be mailed, first-class postage prepaid, to each holder at his address as it appears in the Debenture Register, not less than ten (10) days prior to such Special Record Date.
Notice of the proposed payment of such Defaulted Interest and the Special Record Date therefor having been so mailed, such Defaulted Interest shall be paid to the Persons in whose names the Debentures (or their respective Predecessor Debentures) are
registered at the close of business on such Special Record Date and shall no longer be payable pursuant to the following clause (2) of this Section 2.03. 
  
 (2) The Company may make payment of any Defaulted Interest in any other lawful manner not inconsistent with the requirements of any
securities exchange or automated quotation system on which the Debentures may be listed or designated for issuance, and upon such notice as may be required by such exchange or automated quotation system, if, after notice given by the Company to the
Trustee of the proposed payment pursuant to this clause, such manner of payment shall be deemed practicable by the Trustee. 
  
 Section 2.04. Execution of Debentures. The Debentures shall be signed in the name and on behalf of the Company by the manual or facsimile signature
of its Chief Executive Officer, Chief Financial Officer, President, any Vice President (whether or not designated by a number or numbers or word or words added before or after the title “Vice President”), its Treasurer, its Secretary or
any Assistant Secretary. Only such Debentures as shall bear thereon a certificate of authentication substantially in the form set forth on the form of Debenture attached as Exhibit A 

  

 15 

 
hereto, manually executed by the Trustee (or an authenticating agent appointed by the Trustee as provided by Section 16.13), shall be entitled to the
benefits of this Indenture or be valid or obligatory for any purpose. Such certificate by the Trustee (or such an authenticating agent) upon any Debenture executed by the Company shall be conclusive evidence that the Debenture so authenticated has
been duly authenticated and delivered hereunder and that the holder is entitled to the benefits of this Indenture. 
  
 In case any officer of the Company who shall have signed any of the Debentures shall cease to be such officer before the Debentures so signed shall have
been authenticated and delivered by the Trustee, or disposed of by the Company, such Debentures nevertheless may be authenticated and delivered or disposed of as though the person who signed such Debentures had not ceased to be such officer of the
Company, and any Debenture may be signed on behalf of the Company by such persons as, at the actual date of the execution of such Debenture, shall be the proper officers of the Company, although at the date of the execution of this Indenture any
such person was not such an officer. 
  
 Section 2.05. Exchange
and Registration of Transfer of Debentures; Restrictions on Transfer. (a) The Company shall cause to be kept at the Corporate Trust Office a register (the register maintained in such office and in any other office or agency of the Company
designated pursuant to Section 5.02 being herein sometimes collectively referred to as the “Debenture Register”) in which, subject to such reasonable regulations as it may prescribe, the Company shall provide for the registration of
Debentures and for transfers of Debentures. The Debenture Register shall be in written form or in any form capable of being converted into written form within a reasonably prompt period of time. The Trustee is hereby appointed “Debenture
Registrar” for the purpose of registering Debentures and transfers of Debentures as herein provided. The Company may appoint one or more co-registrars in accordance with Section 5.02. 
  
 Upon surrender for registration of transfer of any Debenture to the Debenture
Registrar or any co-registrar, and satisfaction of the requirements for such transfer set forth in this Section 2.05, the Company shall execute, and the Trustee shall authenticate and deliver, in the name of the designated transferee or transferees,
one or more new Debentures of any authorized denominations and of a like aggregate principal amount and bearing such restrictive legends as may be required by this Indenture. 
  
 Debentures may be exchanged for other Debentures of any authorized denominations and of a like aggregate principal amount,
upon surrender of the Debentures to be exchanged at any such office or agency maintained by the Company pursuant to Section 5.02. Whenever any Debentures are so surrendered for exchange, the Company shall execute, and the Trustee shall authenticate
and deliver, the Debentures which the Debentureholder making the exchange is entitled to receive bearing registration numbers not contemporaneously outstanding. 
  

All Debentures issued upon any registration of transfer or exchange of Debentures shall be the valid obligations of the Company, evidencing the same
debt, and entitled to the same benefits under this Indenture, as the Debentures surrendered upon such registration of transfer or exchange. 
  

 16 

 All Debentures presented or surrendered for registration of transfer or for exchange, redemption,
repurchase or conversion shall (if so required by the Company or the Debenture Registrar) be duly endorsed, or be accompanied by a written instrument or instruments of transfer in form satisfactory to the Company, duly executed by the
Debentureholder thereof or his attorney duly authorized in writing. 
  
 No service charge shall be made to any holder for any registration of, transfer or exchange of Debentures, but the Company may require payment by the holder of a sum sufficient to cover any tax, assessment or other governmental charge that
may be imposed in connection with any registration of transfer or exchange of Debentures. 
  
 Neither the Company nor the Trustee nor any Debenture Registrar shall be required to exchange or register a transfer of (a) any Debentures for a period of fifteen (15) days next preceding any selection of Debentures
to be redeemed, (b) any Debentures or portions thereof called for redemption pursuant to Section 3.01, (c) any Debentures or portions thereof surrendered for conversion pursuant to Article 15, (d) any Debentures or portions thereof tendered for
repurchase (and not withdrawn) pursuant to Section 3.05 or (e) any Debentures or portions thereof tendered for repurchase (and not withdrawn) pursuant to Section 3.06. 
  
 (b) The following provisions shall apply only to Global Debentures: 
  
 (i) Each Global Debenture authenticated under this Indenture
shall be registered in the name of the Depositary or a nominee thereof and delivered to such Depositary or a nominee thereof or Custodian therefor, and each such Global Debenture shall constitute a single Debenture for all purposes of this
Indenture. 
  
 (ii) Notwithstanding any other
provision in this Indenture, no Global Debenture may be exchanged in whole or in part for Debentures registered, and no transfer of a Global Debenture in whole or in part may be registered, in the name of any Person other than the Depositary or a
nominee thereof unless (A) the Depositary (I) has notified the Company that it is unwilling or unable to continue as Depositary for such Global Debenture and a successor depositary has not been appointed by the Company within ninety (90) days or
(II) has ceased to be a clearing agency registered under the Exchange Act, (B) an Event of Default has occurred and is continuing or (C) the Company, in its sole discretion, notifies the Trustee in writing that it no longer wishes to have all the
Debentures represented by Global Debentures. Any Global Debenture exchanged pursuant to clause (A) or (B) above shall be so exchanged in whole and not in part and any Global Debenture exchanged pursuant to clause (C) above may be exchanged in whole
or from time to time in part as directed by the Company. Any Debenture issued in exchange for a Global Debenture or any portion thereof shall be a Global Debenture; provided that any such Debenture so issued that is registered in the name of
a Person other than the Depositary or a nominee thereof shall not be a Global Debenture. 
  
 (iii) Securities issued in exchange for a Global Debenture or any portion thereof pursuant to clause (ii) above shall be issued in
definitive, fully registered form, without interest coupons, shall have an aggregate principal amount equal to that of such 

  

 17 

 
Global Debenture or portion thereof to be so exchanged, shall be registered in such names and be in such authorized denominations as the Depositary shall
designate and shall bear any legends required hereunder. Any Global Debentures to be exchanged in whole shall be surrendered by the Depositary to the Trustee, as Debenture Registrar. With regard to any Global Debenture to be exchanged in part,
either such Global Debenture shall be so surrendered for exchange or, if the Trustee is acting as Custodian for the Depositary or its nominee with respect to such Global Debenture, the principal amount thereof shall be reduced, by an amount equal to
the portion thereof to be so exchanged, by means of an appropriate adjustment made on the records of the Trustee. Upon any such surrender or adjustment, the Trustee shall authenticate and make available for delivery the Debenture issuable on such
exchange to or upon the written order of the Depositary or an authorized representative thereof. 
  
 (iv) In the event of the occurrence of any of the events specified in clause (ii) above, the Company will promptly make available to the
Trustee a reasonable supply of certificated Debentures in definitive, fully registered form, without interest coupons. 
  
 (v) Neither any members of, or participants in, the Depositary (“Agent Members”) nor any other Persons on whose behalf
Agent Members may act shall have any rights under this Indenture with respect to any Global Debenture registered in the name of the Depositary or any nominee thereof, and the Depositary or such nominee, as the case may be, may be treated by the
Company, the Trustee and any agent of the Company or the Trustee as the absolute owner and holder of such Global Debenture for all purposes whatsoever. Notwithstanding the foregoing, nothing herein shall prevent the Company, the Trustee or any agent
of the Company or the Trustee from giving effect to any written certification, proxy or other authorization furnished by the Depositary or such nominee, as the case may be, or impair, as between the Depositary, its Agent Members and any other Person
on whose behalf an Agent Member may act, the operation of customary practices of such Persons governing the exercise of the rights of a beneficial holder of any Debenture. 
  
 (vi) At such time as all interests in a Global Debenture have been redeemed, repurchased, converted,
canceled or exchanged for Debentures in certificated form, such Global Debenture shall, upon receipt thereof, be canceled by the Trustee in accordance with standing procedures and instructions existing between the Depositary and the Custodian. At
any time prior to such cancellation, if any interest in a Global Debenture is redeemed, repurchased, converted, canceled or exchanged for Debentures in certificated form, the principal amount of such Global Debenture shall, in accordance with the
standing procedures and instructions existing between the Depositary and the Custodian, be appropriately reduced, and an endorsement shall be made on such Global Debenture, by the Trustee or the Custodian, at the direction of the Trustee, to reflect
such reduction. 
  
 (c) Every Debenture that bears or is required
under this Section 2.05(c) to bear the legend set forth in this Section 2.05(c) (together with any Common Stock issued upon conversion of the Debentures and required to bear the legend set forth in Section 2.05(d), collectively, the
“Restricted Securities”) shall be subject to the restrictions on transfer set forth in this Section 2.05(c) (including those set forth in the legend below) unless such restrictions on transfer 

  

 18 

 
shall be waived by written consent of the Company, and the holder of each such Restricted Security, by such holder’s acceptance thereof, agrees to be
bound by all such restrictions on transfer. As used in Section 2.05(c) and 2.05(d), the term “transfer” encompasses any sale, pledge, loan, transfer or other disposition whatsoever of any Restricted Security or any interest therein.

  
 Until the expiration of the holding period applicable to sales
thereof under Rule 144(k) under the Securities Act (or any successor provision), any certificate evidencing such Debenture (and all securities issued in exchange therefor or substitution thereof, other than Common Stock, if any, issued upon
conversion thereof, which shall bear the legend set forth in Section 2.05(d), if applicable) shall bear a legend in substantially the following form, unless such Debenture has been sold pursuant to a registration statement that has been declared
effective under the Securities Act (and which continues to be effective at the time of such transfer) or pursuant to Rule 144 under the Securities Act or any similar provision then in force, or unless otherwise agreed by the Company in writing, with
written notice thereof to the Trustee: 
  
 THIS SECURITY HAS NOT
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR THE SECURITIES LAWS OF ANY STATE OR OTHER JURISDICTION. NEITHER THIS SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD,
ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, SUCH REGISTRATION. THE HOLDER OF THIS SECURITY, BY ITS ACCEPTANCE HEREOF, (1)
REPRESENTS THAT IT IS A “QUALIFIED INSTITUTIONAL BUYER” (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT (“RULE 144A”)); (2) AGREES ON ITS OWN BEHALF AND ON BEHALF OF ANY INVESTOR ACCOUNT FOR WHICH IT HAS PURCHASED
SECURITIES, TO OFFER, SELL OR OTHERWISE TRANSFER SUCH SECURITY OR ANY COMMON STOCK ISSUABLE UPON CONVERSION OF SUCH SECURITY, PRIOR TO THE EXPIRATION OF THE HOLDING PERIOD APPLICABLE TO SALES OF THIS SECURITY UNDER RULE 144 UNDER THE SECURITIES ACT
(OR ANY SUCCESSOR PROVISION) ONLY (A) TO THE ISSUER, (B) PURSUANT TO A REGISTRATION STATEMENT THAT HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT (AND WHICH CONTINUES TO BE EFFECTIVE AT THE TIME OF SUCH TRANSFER), (C) FOR SO LONG AS THE
SECURITIES ARE ELIGIBLE FOR RESALE PURSUANT TO RULE 144A, IN COMPLIANCE WITH RULE 144A TO A PERSON IT REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL BUYER THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO
WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A OR (D) PURSUANT TO ANOTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT; SUBJECT TO THE ISSUER’S AND THE TRUSTEE’S RIGHT PRIOR TO
ANY SUCH OFFER, SALE OR TRANSFER PURSUANT TO CLAUSE (D) TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM; AND (3) AGREES THAT IT WILL 

  

 19 

 
DELIVER TO EACH PERSON TO WHOM THIS SECURITY IS TRANSFERRED A NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND. THIS LEGEND WILL BE REMOVED UPON THE
TRANSFER OF THIS SECURITY PURSUANT TO CLAUSE 2(B) ABOVE OR UNDER RULE 144 UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION). 
  
 THE HOLDER OF THIS SECURITY IS ENTITLED TO THE BENEFITS OF A REGISTRATION RIGHTS AGREEMENT DATED AS OF NOVEMBER 7, 2003 AND, BY ITS ACCEPTANCE HEREOF,
AGREES TO BE BOUND BY AND TO COMPLY WITH THE PROVISIONS OF SUCH REGISTRATION RIGHTS AGREEMENT. 
  
 Any Debenture (or security issued in exchange or substitution therefor) as to which such restrictions on transfer shall have expired in accordance with their terms or as to which the conditions for removal of the
foregoing legend set forth therein have been satisfied may, upon surrender of such Debenture for exchange to the Debenture Registrar in accordance with the provisions of this Section 2.05, be exchanged for a new Debenture or Debentures, of like
tenor and aggregate principal amount, which shall not bear the restrictive legend required by this Section 2.05(c). If the Restricted Security surrendered for exchange is represented by a Global Debenture bearing the legend set forth in this Section
2.05(c), the principal amount of the legended Global Debenture shall be reduced by the appropriate principal amount and the principal amount of a Global Debenture without the legend set forth in this Section 2.05(c) shall be increased by an equal
principal amount. If a Global Debenture without the legend set forth in this Section 2.05(c) is not then outstanding, the Company shall execute and the Trustee shall authenticate and deliver an unlegended Global Debenture to the Depositary.

  
 (d) Until the expiration of the holding period applicable to
sales thereof under Rule 144(k) under the Securities Act (or any successor provision), any stock certificate representing Common Stock issued upon conversion of any Debenture shall bear a legend in substantially the following form, unless such
Common Stock has been sold pursuant to a registration statement that has been declared effective under the Securities Act (and which continues to be effective at the time of such transfer) or pursuant to Rule 144 under the Securities Act or any
similar provision then in force, or such Common Stock has been issued upon conversion of Debentures that have been transferred pursuant to a registration statement that has been declared effective under the Securities Act or pursuant to Rule 144
under the Securities Act or any similar provision then in force, or unless otherwise agreed by the Company in writing with written notice thereof to the transfer agent: 
  
 THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”),
OR THE SECURITIES LAWS OF ANY STATE OR OTHER JURISDICTION. NEITHER THIS SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION
OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, SUCH REGISTRATION. THE HOLDER OF THIS SECURITY, BY ITS ACCEPTANCE HEREOF, (1) REPRESENTS THAT IT IS A “QUALIFIED INSTITUTIONAL  

  

 20 

 
BUYER” (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT (“RULE 144A”)); (2) AGREES ON ITS OWN BEHALF AND ON BEHALF OF ANY
INVESTOR ACCOUNT FOR WHICH IT HAS PURCHASED SECURITIES, TO OFFER, SELL OR OTHERWISE TRANSFER SUCH SECURITY, PRIOR TO THE EXPIRATION OF THE HOLDING PERIOD APPLICABLE TO SALES OF THIS SECURITY UNDER RULE 144 UNDER THE SECURITIES ACT (OR ANY SUCCESSOR
PROVISION) ONLY (A) TO THE ISSUER, (B) PURSUANT TO A REGISTRATION STATEMENT THAT HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT (AND WHICH CONTINUES TO BE EFFECTIVE AT THE TIME OF SUCH TRANSFER), (C) FOR SO LONG AS THE SECURITIES ARE ELIGIBLE
FOR RESALE PURSUANT TO RULE 144A, IN COMPLIANCE WITH RULE 144A TO A PERSON IT REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL BUYER THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN
THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A OR (D) PURSUANT TO ANOTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE ISSUER’S AND THE TRUSTEE’S RIGHT PRIOR TO ANY SUCH OFFER, SALE
OR TRANSFER PURSUANT TO CLAUSE (D) TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM; AND (3) AGREES THAT IT WILL DELIVER TO EACH PERSON TO WHOM THIS SECURITY IS TRANSFERRED A
NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND. THIS LEGEND WILL BE REMOVED UPON THE TRANSFER OF THIS SECURITY PURSUANT TO CLAUSE 2(B) ABOVE OR UNDER RULE 144 UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION). 
  
 THE HOLDER OF THIS SECURITY IS ENTITLED TO THE BENEFITS OF A REGISTRATION
RIGHTS AGREEMENT DATED AS OF NOVEMBER 7, 2003 AND, BY ITS ACCEPTANCE HEREOF, AGREES TO BE BOUND BY AND TO COMPLY WITH THE PROVISIONS OF SUCH REGISTRATION RIGHTS AGREEMENT. 
  
 Any such Common Stock as to which such restrictions on transfer shall have expired in accordance with their terms or as to
which the conditions for removal of the foregoing legend set forth therein have been satisfied may, upon surrender of the certificates representing such shares of Common Stock for exchange in accordance with the procedures of the transfer agent for
the Common Stock, be exchanged for a new certificate or certificates for a like number of shares of Common Stock, which shall not bear the restrictive legend required by this Section 2.05(d). 
  
 (e) Any Debenture or Common Stock issued upon the conversion of a Debenture
that, prior to the expiration of the holding period applicable to sales thereof under Rule 144(k) under the Securities Act (or any successor provision), is purchased or owned by the Company or any Affiliate thereof may not be resold by the Company
or such Affiliate unless registered under the Securities Act or resold pursuant to an exemption from the registration requirements of the Securities Act in a transaction which results in such Debentures or Common Stock, as the case may be, no longer
being “restricted securities” (as defined under Rule 144). 
  

 21 

 The Trustee shall have no obligation or duty to monitor, determine or inquire as to compliance with any
restrictions on transfer imposed under this Indenture or under applicable law with respect to any transfer of any interest in any Debenture (including any transfers between or among Agent Members or beneficial holders of interests in any Global
Debenture) other than to require delivery of such certificates and other documentation or evidence as are expressly required by, and to do so if and when expressly required by, the terms of this Indenture, and to examine the same to determine
substantial compliance as to form with the express requirements hereof. 
  
 Section 2.06. Mutilated, Destroyed, Lost or Stolen Debentures. In case any Debenture shall become mutilated or be destroyed, lost or stolen, the Company in its discretion may execute, and upon its written request the Trustee or an
authenticating agent appointed by the Trustee shall authenticate and make available for delivery, a new Debenture, bearing a number not contemporaneously outstanding, in exchange and substitution for the mutilated Debenture, or in lieu of and in
substitution for the Debenture so destroyed, lost or stolen. In every case, the applicant for a substituted Debenture shall furnish to the Company, to the Trustee and, if applicable, to such authenticating agent such security or indemnity as may be
required by them to save each of them harmless for any loss, liability, cost or expense caused by or connected with such substitution, and, in every case of destruction, loss or theft, the applicant shall also furnish to the Company, to the Trustee
and, if applicable, to such authenticating agent evidence to their satisfaction of the destruction, loss or theft of such Debenture and of the ownership thereof. 
  
 Following receipt by the Trustee or such authenticating agent, as the case may be, of satisfactory security or indemnity and
evidence as described in the preceding paragraph, the Trustee or such authenticating agent may authenticate any such substituted Debenture and make available for delivery such Debenture. Upon the issuance of any substituted Debenture, the Company
may require the payment by the holder of a sum sufficient to cover any tax, assessment or other governmental charge that may be imposed in relation thereto and any other expenses connected therewith. In case any Debenture which has matured or is
about to mature or has been called for redemption or has been tendered for repurchase upon a Repurchase Date (and not withdrawn) or is to be converted into Common Stock shall become mutilated or be destroyed, lost or stolen, the Company may, instead
of issuing a substitute Debenture, pay or authorize the payment of or convert or authorize the conversion of the same (without surrender thereof except in the case of a mutilated Debenture), as the case may be, if the applicant for such payment or
conversion shall furnish to the Company, to the Trustee and, if applicable, to such authenticating agent such security or indemnity as may be required by them to save each of them harmless from any loss, liability, cost or expense caused by or in
connection with such substitution, and, in every case of destruction, loss or theft, the applicant shall also furnish to the Company, the Trustee and, if applicable, any Paying Agent or Conversion Agent evidence to their satisfaction of the
destruction, loss or theft of such Debenture and of the ownership thereof. 
  
 Every substitute Debenture issued pursuant to the provisions of this Section 2.06 by virtue of the fact that any Debenture is destroyed, lost or stolen shall constitute an additional contractual obligation of the
Company, whether or not the destroyed, lost or stolen Debenture shall be found at any time, and shall be entitled to all the benefits of (but shall be subject to all the limitations set forth in) this Indenture equally and proportionately with any
and all other Debentures duly issued hereunder. To the extent permitted by law, all Debentures shall be held 

  

 22 

 
and owned upon the express condition that the foregoing provisions are exclusive with respect to the replacement or payment or conversion or redemption or
repurchase of mutilated, destroyed, lost or stolen Debentures and shall preclude any and all other rights or remedies notwithstanding any law or statute existing or hereafter enacted to the contrary with respect to the replacement or payment or
conversion or redemption or repurchase of negotiable instruments or other securities without their surrender. 
  
 Section 2.07. Temporary Debentures. Pending the preparation of Debentures in certificated form, the Company may execute and the Trustee or any
authenticating agent appointed by the Trustee shall, upon the written request of the Company, authenticate and deliver temporary Debentures (printed or lithographed). Temporary Debentures shall be issuable in any authorized denomination, and
substantially in the form of the Debentures in certificated form, but with such omissions, insertions and variations as may be appropriate for temporary Debentures, all as may be determined by the Company. Every such temporary Debenture shall be
executed by the Company and authenticated by the Trustee or such authenticating agent upon the same conditions and in substantially the same manner, and with the same effect, as the Debentures in certificated form. Without unreasonable delay, the
Company will execute and deliver to the Trustee or such authenticating agent Debentures in certificated form and thereupon any or all temporary Debentures may be surrendered in exchange therefor, at each office or agency maintained by the Company
pursuant to Section 5.02, and the Trustee or such authenticating agent shall authenticate and make available for delivery in exchange for such temporary Debentures an equal aggregate principal amount of Debentures in certificated form. Such exchange
shall be made by the Company at its own expense and without any charge therefor. Until so exchanged, the temporary Debentures shall in all respects be entitled to the same benefits and subject to the same limitations under this Indenture as
Debentures in certificated form authenticated and delivered hereunder. 
  
 Section 2.08. Cancellation of Debentures. All Debentures surrendered for the purpose of payment, redemption, repurchase, conversion, exchange or registration of transfer shall, if surrendered to the Company or any Paying Agent or any
Debenture Registrar or any Conversion Agent, be surrendered to the Trustee and promptly canceled by it, or, if surrendered to the Trustee, shall be promptly canceled by it, and no Debentures shall be issued in lieu thereof except as expressly
permitted by any of the provisions of this Indenture. The Trustee shall dispose of such canceled Debentures in accordance with its customary procedures. If the Company shall acquire any of the Debentures, such acquisition shall not operate as a
redemption, repurchase or satisfaction of the Indebtedness represented by such Debentures unless and until the same are delivered to the Trustee for cancellation. 
  
 Section 2.09. CUSIP Numbers. The Company in issuing the Debentures may use “CUSIP” numbers (if then
generally in use), and, if so, the Trustee shall use “CUSIP” numbers in notices of redemption as a convenience to Debentureholders; provided that any such notice may state that no representation is made as to the correctness of such
numbers either as printed on the Debentures or as contained in any notice of a redemption and that reliance may be placed only on the other identification numbers printed on the Debentures, and any such redemption shall not be affected by any defect
in or omission of such numbers. The Company will promptly notify the Trustee of any change in the “CUSIP” numbers. 
  

 23 

 ARTICLE 3 
 REDEMPTION AND REPURCHASE OF DEBENTURES 
  
 Section 3.01. Company’s Right to Redeem. Prior to November 6, 2010, the Debentures will not be redeemable at the Company’s option. At any
time on or after November 6, 2010 and prior to Stated Maturity, the Company, at its option, may redeem the Debentures in accordance with the provisions of Section 3.02, Section 3.03 and Section 3.04 on the Redemption Date for cash, in whole or in
part, at a redemption price (the “Redemption Price”) equal to 100% of the principal amount of the Debentures to be redeemed together in each case with accrued and unpaid interest on the Debentures redeemed to (but excluding) the
Redemption Date. 
  
 Section 3.02. Notice of Optional
Redemption; Selection of Debentures. (a) In case the Company shall desire to exercise the right to redeem all or, as the case may be, any part of the Debentures pursuant to Section 3.01, it shall fix a date for redemption (the
“Redemption Date”) and it or, at its written request received by the Trustee not fewer than thirty-five (35) days prior (or such shorter period of time as may be acceptable to the Trustee) to the Redemption Date requesting that the
Trustee give such notice and setting forth the information to be stated in such notice as provided in Section 3.02(b), the Trustee in the name of and at the expense of the Company, shall mail or cause to be mailed a notice of such redemption (a
“Redemption Notice”) not fewer than thirty (30) nor more than sixty (60) days prior to the Redemption Date to each holder of Debentures so to be redeemed as a whole or in part at its last address as the same appears on the Debenture
Register; provided that if the Company shall give such notice, it shall also give written notice of the Redemption Date to the Trustee. Such mailing shall be by first class mail. The notice, if mailed in the manner herein provided, shall be
conclusively presumed to have been duly given, whether or not the holder receives such notice. In any case, failure to give such notice by mail or any defect in the notice to the holder of any Debenture designated for redemption as a whole or in
part shall not affect the validity of the proceedings for the redemption of any other Debenture. Concurrently with the mailing of any such Redemption Notice, the Company shall issue a press release announcing such redemption, the form and content of
which press release shall be determined by the Company in its sole discretion. The failure to issue any such press release or any defect therein shall not affect the validity of the Redemption Notice or any of the proceedings for the redemption of
any Debenture called for redemption. 
  
 (b) Each such Redemption
Notice shall specify the aggregate principal amount of Debentures to be redeemed, the CUSIP number or numbers of the Debentures being redeemed, the Redemption Date (which shall be a Business Day), the Redemption Price at which Debentures are to be
redeemed, the place or places of payment, that payment will be made upon presentation and surrender of such Debentures, that interest accrued to the Redemption Date will be paid as specified in said notice, and that on and after said date interest
thereon or on the portion thereof to be redeemed will cease to accrue. Such notice shall also state the current Conversion Rate, the date on which the right to convert such Debentures or portions thereof into Common Stock will expire (which date
shall not be later than the close of business on the second Business Day prior to the Redemption Date) and if the Company has elected to satisfy all or a portion of the Conversion Obligation in cash with respect to Debentures converted prior to the
Redemption Date, the amount of the Conversion Obligation to be settled in cash (which must be expressed either as 100% of the Conversion Obligation or as a fixed dollar amount). If fewer 

  

 24 

 
than all the Debentures are to be redeemed, the Redemption Notice shall identify the Debentures to be redeemed (including CUSIP numbers, if any). In case any
Debenture is to be redeemed in part only, the Redemption Notice shall state the portion of the principal amount thereof to be redeemed and shall state that, on and after the Redemption Date, upon surrender of such Debenture, a new Debenture or
Debentures in principal amount equal to the unredeemed portion thereof will be issued. 
  
 (c) On or prior to the Redemption Date specified in the Redemption Notice given as provided in this Section 3.02, the Company will deposit with the Trustee or with one or more Paying Agents (or, if the Company is
acting as its own Paying Agent, set aside, segregate and hold in trust as provided in Section 5.04) an amount of money in immediately available funds sufficient to redeem on the Redemption Date all the Debentures (or portions thereof) so called for
redemption (other than those theretofore surrendered for conversion into Common Stock) at the appropriate Redemption Price; provided that if such payment is made on the Redemption Date, it must be received by the Trustee or Paying Agent, as
the case may be, by 10:00 a.m., New York City time, on such date. The Company shall be entitled to retain any interest, yield or gain on amounts deposited with the Trustee or any Paying Agent pursuant to this Section 3.02(c) in excess of amounts
required hereunder to pay the Redemption Price and accrued interest to, but excluding, the Redemption Date. Subject to the last sentence of Section 8.05, if any Debenture called for redemption is converted pursuant hereto prior to such Redemption
Date, any money deposited with the Trustee or any Paying Agent or so segregated and held in trust for the redemption of such Debenture shall be paid to the Company upon its written request, or, if then held by the Company, shall be discharged from
such trust. Whenever any Debentures are to be redeemed, the Company will give the Trustee written notice in the form of an Officers’ Certificate not fewer than thirty-five (35) days (or such shorter period of time as may be acceptable to the
Trustee) prior to the Redemption Date as to the aggregate principal amount of Debentures to be redeemed. 
  
 (d) If less than all of the outstanding Debentures are to be redeemed, the Trustee shall select the Debentures or portions thereof of the Global Debenture
or the Debentures in certificated form to be redeemed (in principal amounts of $1,000 or multiples thereof) by lot, on a pro rata basis or by another method the Trustee deems fair and appropriate. If any Debenture selected for partial redemption is
submitted for conversion in part after such selection, the portion of such Debenture submitted for conversion shall be deemed (so far as may be possible) to be from the portion selected for redemption. The Debentures (or portions thereof) so
selected shall be deemed duly selected for redemption for all purposes hereof, notwithstanding that any such Debenture is submitted for conversion in part before the mailing of the Redemption Notice. 
  
 Upon any redemption of less than all of the outstanding Debentures, the
Company and the Trustee may (but need not), solely for purposes of determining the pro rata allocation among such Debentures as are unconverted and outstanding at the time of redemption, treat as outstanding any Debentures surrendered for conversion
during the period of fifteen (15) days next preceding the mailing of a Redemption Notice and may (but need not) treat as outstanding any Debenture authenticated and delivered during such period in exchange for the unconverted portion of any
Debenture converted in part during such period. 
  

 25 

 Section 3.03. Payment of Debentures Called for Redemption by the Company. If a Redemption Notice
has been given as provided in Section 3.02, the Debentures or portion of Debentures with respect to which such notice has been given shall, unless converted into Common Stock pursuant to the terms hereof, become due and payable on the Redemption
Date and at the place or places stated in such notice at the applicable Redemption Price, and on and after the Redemption Date (unless the Company shall default in the payment of such Debentures at the Redemption Price) interest on the Debentures or
portion of Debentures so called for redemption shall cease to accrue and, after the close of business on the second Business Day immediately preceding the Redemption Date (unless the Company shall default in the payment of such Debentures at the
Redemption Price), such Debentures shall cease to be convertible into Common Stock and, except as provided in Section 8.05, to be entitled to any benefit or security under this Indenture, and the holders thereof shall have no right in respect of
such Debentures except the right to receive the Redemption Price thereof. On presentation and surrender of such Debentures at a place of payment in said notice specified, the said Debentures or the specified portions thereof shall be paid and
redeemed by the Company at the applicable Redemption Price; provided that if the applicable Redemption Date is an Interest Payment Date, the interest payable on such Interest Payment Date shall be paid on such Interest Payment Date to the
holders of record of such Debentures on the applicable record date instead of the holders surrendering such Debentures for redemption on such date. 
  
 Upon presentation of any Debenture redeemed in part only, the Company shall execute and the Trustee shall authenticate and make available for delivery to
the holder thereof, at the expense of the Company, a new Debenture or Debentures, of authorized denominations, in principal amount equal to the unredeemed portion of the Debentures so presented. 
  
 Notwithstanding the foregoing, the Trustee shall not redeem any Debentures or
mail any Redemption Notice during the continuance of a default in payment of interest on the Debentures. If any Debenture called for redemption shall not be so paid upon surrender thereof for redemption, the principal shall, until paid or duly
provided for, continue to bear interest at the rate borne by the Debenture, compounded semiannually, and such Debenture shall remain convertible into Common Stock until the principal and interest shall have been paid or duly provided for.

  
 Section 3.04. Conversion Arrangement on Call for
Redemption. In connection with any redemption of Debentures, the Company may arrange for the purchase and conversion of any Debentures by an agreement with one or more investment banks or other purchasers to purchase such Debentures by paying to
the Trustee in trust for the Debentureholders, on or before the Redemption Date, an amount not less than the applicable Redemption Price of such Debentures. Notwithstanding anything to the contrary contained in this Article 3, the obligation of the
Company to pay the Redemption Price of such Debentures shall be deemed to be satisfied and discharged to the extent such amount is so paid by such purchasers. If such an agreement is entered into, a copy of which will be filed with the Trustee prior
to the Redemption Date, any Debentures not duly surrendered for conversion by the holders thereof may, at the option of the Company, be deemed, to the fullest extent permitted by law, acquired by such purchasers from such holders and
(notwithstanding anything to the contrary contained in Article 15) surrendered by such purchasers for conversion, all as of immediately prior to the close of business on the Redemption Date (and the right to convert any such Debentures shall be
extended through such 

  

 26 

 
time), subject to payment of the above amount as aforesaid. At the direction of the Company, the Trustee shall hold and dispose of any such amount paid to it
in the same manner as it would monies deposited with it by the Company for the redemption of Debentures. Without the Trustee’s prior written consent, no arrangement between the Company and such purchasers for the purchase and conversion of any
Debentures shall increase or otherwise affect any of the powers, duties, responsibilities or obligations of the Trustee as set forth in this Indenture. 
  
 Section 3.05. Repurchase of Debentures by the Company at Option of Holders upon a Fundamental Change. (a) If a Fundamental Change shall occur at
any time prior to Stated Maturity, each holder shall have the right, at such holder’s option, to require the Company to repurchase all of such holder’s Debentures, or any portion thereof that is a multiple of $1,000 principal amount, on
the date specified in the Fundamental Change Repurchase Notice, which date shall be no more than thirty-five (35) Business Days after the occurrence of such Fundamental Change but in no event prior to the date on which such Fundamental Change occurs
(the “Fundamental Change Repurchase Date”). The Company shall repurchase such Debentures in U.S. legal tender (“cash”) at a price (the “Fundamental Change Repurchase Price”) equal to 100% of the
principal amount thereof plus any accrued and unpaid interest to but excluding the Fundamental Change Repurchase Date; provided that if such Fundamental Change Repurchase Date falls on an Interest Payment Date, then the interest payable on
such Interest Payment Date shall be paid to the holders of record of the Debentures on the applicable record date instead of the holders surrendering the Debentures for repurchase on such date. 
  
 The Company’s obligation to repurchase all or a portion of a
holder’s Debentures under this Section 3.05 shall be satisfied if a third party makes the offer to repurchase the Debentures at the Fundamental Change Repurchase Price in the manner and at the times and otherwise in compliance in all material
respects with the requirements set out in this Section 3.05 and such third party complies with the obligations of the Company in connection herewith. 
  
 (b) On or before the twenty-fifth (25th) Business Day prior to each Fundamental Change Repurchase Date, the Company, or at its written request the Trustee in the name of and at the expense of the Company (which request must be received by the Trustee at least
five (5) Business Days prior to the date the Trustee is requested to give notice as described below), unless the Trustee shall agree to a shorter period), shall mail or cause to be mailed, by first class mail, to all holders of record on such date a
notice (the “Fundamental Change Repurchase Notice”) of the occurrence of such Fundamental Change and of the repurchase right at the option of the holders arising as a result thereof to each holder of Debentures at its last address
as the same appears on the Debenture Register; provided that if the Company shall give such notice, it shall also give written notice of the Fundamental Change to the Trustee at such time as it is mailed to Debentureholders. Such notice, if
mailed in the manner herein provided, shall be conclusively presumed to have been duly given, whether or not the holder receives such notice. Each Fundamental Change Repurchase Notice shall state: 
  
 (i) the Fundamental Change Repurchase Price, excluding
accrued and unpaid interest, the applicable Conversion Rate at the time of such notice (and any applicable adjustments to the Conversion Rate) and, to the extent known at the time of such notice, the amount of interest that will be payable with
respect to the Debentures on the Fundamental Change Repurchase Date; 
  

 27 

 (ii) the events causing the Fundamental Change and the date of the Fundamental Change;

  
 (iii) the Fundamental Change Repurchase Date;

  
 (iv) the last date on which a holder may
exercise the repurchase right; 
  
 (v) the name
and address of the Paying Agent and the Conversion Agent; 
  
 (vi) that Debentures as to which a Fundamental Change Repurchase Election has been given by the holder may be converted only if the election has been withdrawn by the holder in accordance with the terms of this
Indenture; provided that the Debentures are otherwise convertible in accordance with Section 15.01; 
  
 (vii) that the holder shall have the right to withdraw any Debentures surrendered prior to the close of business on the Business Day
immediately preceding the Fundamental Change Repurchase Date (or any such later time as may be required by applicable law); 
  
 (viii) a description of the procedure which a Debentureholder must follow to exercise such repurchase right or to withdraw any surrendered
Debentures; 
  
 (ix) the CUSIP number or numbers
of the Debentures (if then generally in use); and 
  
 (x) briefly, the conversion rights of the Debentures and whether, at the time of such notice, the Debentures are eligible for conversion. 
  
 No failure of the Company to give the foregoing notices and no defect therein shall limit the Debentureholders’ repurchase rights or affect the
validity of the proceedings for the repurchase of the Debentures pursuant to this Section 3.05. 
  
 (c) Debentures shall be repurchased pursuant to this Section 3.05 at the option of the holder upon: 
  
 (i) delivery to the Trustee (or other Paying Agent appointed
by the Company) by a holder of a duly completed notice (a “Fundamental Change Repurchase Election”) in the form set forth on the reverse of the Debenture at any time prior to the close of business on the Business Day immediately
preceding the Fundamental Change Repurchase Date stating: 
  
 (A) if certificated, the certificate numbers of the Debentures which the holder shall deliver to be repurchased; 
  
 (B) the portion of the principal amount of the Debentures that the holder shall deliver to be repurchased, which portion must be $1,000 or
an integral multiple thereof; and 
  

 28 

 (C) that such Debentures shall be repurchased as of the Fundamental Change Repurchase
Date pursuant to the terms and conditions specified in the Debentures and in the Indenture; and 
  
 (ii) delivery or book-entry transfer of the Debentures to the Trustee (or other Paying Agent appointed by the Company) simultaneously with
or at any time after delivery of the Fundamental Change Repurchase Election (together with all necessary endorsements) at the Corporate Trust Office of the Trustee (or other Paying Agent appointed by the Company) in the Borough of Manhattan. The
office of Wells Fargo Bank, c/o Deutsche Bank, 14 Wall Street, 4th Floor, Window #44, New York, NY 10005, Attention: John Maloney/Account 092192, Wells Fargo Account # 15206900 (Navigant International), (212) 618-2319 shall initially be such office
or agency for all the aforesaid purposes. Such delivery or transfer being a condition to receipt by the holder of the Fundamental Change Repurchase Price therefor; provided that such Fundamental Change Repurchase Price shall be so paid
pursuant to this Section 3.05 only if the Debentures so delivered or transferred to the Trustee (or other Paying Agent appointed by the Company) shall conform in all respects to the description thereof in the related Fundamental Change Repurchase
Election. All questions as to the validity, eligibility (including time of receipt) and acceptance of any Debenture for repurchase shall be determined by the Company, whose determination shall be final and binding absent manifest error. 

 
 Section 3.06. Repurchase of Debentures by the Company at Option of
Holders on Specified Dates. (a) On each of November 1, 2010, November 1, 2013 and November 1, 2018 (each, a “Company Repurchase Date”), each holder shall have the right, at such holder’s option, to require the Company to
repurchase all of such holder’s Debentures, or any portion thereof that is a multiple of $1,000 principal amount. The Company shall repurchase such Debentures in cash at a price (the “Company Repurchase Price”) equal to 100% of
the principal amount thereof plus any accrued and unpaid interest to but excluding the Company Repurchase Date; provided that if such Company Repurchase Date falls on an Interest Payment Date, then the interest payable on such Interest
Payment Date shall be paid to the holders of record of the Debentures on the applicable record date instead of the holders surrendering the Debentures for repurchase on such date. 
  
 (c) On or before the twenty-fifth (25th) Business Day prior to each Company Repurchase Date, the Company, or at its written request the Trustee in the name of and at the expense of the Company (which request must be received by the Trustee
at least five (5) Business Days prior to the date the Trustee is requested to give notice as described below), unless the Trustee shall agree to a shorter period), shall mail or cause to be mailed, by first class mail, to all holders of record on
such date a notice (the “Company Repurchase Notice”) to each holder of Debentures at its last address as the same appears on the Debenture Register; provided that if the Company shall give such notice, it shall also give
written notice to the Trustee at such time as it is mailed to Debentureholders. Such notice, if mailed in the manner herein provided, shall be conclusively presumed to have been duly given, whether or not the holder receives such notice. Each
Company Repurchase Notice shall state: 
  
 (i)
the Company Repurchase Price, excluding accrued and unpaid interest, the applicable Conversion Rate at the time of such notice (and any applicable adjustments to 

  

 29 

 
the Conversion Rate) and, to the extent known at the time of such notice, the amount of interest that will be payable with respect to the Debentures on the
Company Repurchase Date; 
  
 (ii) the Company
Repurchase Date; 
  
 (iii) the last date on which
a holder may exercise the repurchase right; 
  
 (iv) the name and address of the Paying Agent and the Conversion Agent; 
  
 (v) that Debentures as to which a Company Repurchase Election has been given by the holder may be converted only if the election has been
withdrawn by the holder in accordance with the terms of this Indenture; provided that the Debentures are otherwise convertible in accordance with Section 15.01; 
  
 (vi) that the holder shall have the right to withdraw any Debentures surrendered prior to the close of
business on the Business Day immediately preceding the Company Repurchase Date (or any such later time as may be required by applicable law); 
  
 (vii) a description of the procedure which a Debentureholder must follow to exercise such repurchase right or to withdraw any surrendered
Debentures; 
  
 (viii) the CUSIP number or
numbers of the Debentures (if then generally in use); and 
  
 (ix) briefly, the conversion rights of the Debentures and whether, at the time of such notice, the Debentures are eligible for conversion. 
  
 No failure of the Company to give the foregoing notices and no defect therein shall limit the Debentureholders’
repurchase rights or affect the validity of the proceedings for the repurchase of the Debentures pursuant to this Section 3.06. 
  
 (c) Debentures shall be repurchased pursuant to this Section 3.06 at the option of the holder upon: 
  
 (i) delivery to the Trustee (or other Paying Agent appointed
by the Company) by a holder of a duly completed notice (a “Company Repurchase Election”) in the form set forth on the reverse of the Debenture at any time from the opening of business on the twenty-fifth (25th) Business Day preceding the Company Repurchase Date until the close of business on the Business Day immediately preceding the
Company Repurchase Date stating: 
  
 (A) if
certificated, the certificate numbers of the Debentures which the holder shall deliver to be repurchased; 
  
 (B) the portion of the principal amount of the Debentures that the holder shall deliver to be repurchased, which portion must be $1,000 or
an integral multiple thereof; and 
  

 30 

 (C) that such Debentures shall be repurchased as of the Company Repurchase Date pursuant
to the terms and conditions specified in the Debentures and in this Indenture; and 
  
 (ii) delivery or book-entry transfer of the Debentures to the Trustee (or other Paying Agent appointed by the Company) simultaneously with
or at any time after delivery of the Company Repurchase Election (together with all necessary endorsements) at the Corporate Trust Office of the Trustee (or other Paying Agent appointed by the Company) in the Borough of Manhattan, such delivery or
transfer being a condition to receipt by the holder of the Company Repurchase Price therefor; provided that such Company Repurchase Price shall be so paid pursuant to this Section 3.06 only if the Debentures so delivered or transferred to the
Trustee (or other Paying Agent appointed by the Company) shall conform in all respects to the description thereof in the related Company Repurchase Election. The office of Wells Fargo Bank, c/o Deutsche Bank, 14 Wall Street, 4th Floor, Window #44,
New York, NY 10005, Attention: John Maloney/Account 092192, Wells Fargo Account # 15206900 (Navigant International), (212) 618-2319 shall initially be such office or agency for all of the aforesaid purposes. All questions as to the validity,
eligibility (including time of receipt) and acceptance of any Debenture for repurchase shall be determined by the Company, whose determination shall be final and binding absent manifest error. 
  
 Section 3.07. Delivery of Written Notice to Trustee. At least three
(3) Business Days before the date of any Repurchase Notice, the Company shall deliver an Officers’ Certificate to the Trustee specifying: 
  
 (i) the information required to be included in the Repurchase Notice; and 
  
 (ii) whether the Company desires the Trustee to give the Repurchase Notice required. 
  
 Section 3.08. Conditions and Procedures for Repurchase at Option of
Holders. (a) The Company shall repurchase from the holder thereof, pursuant to Section 3.05 or Section 3.06, a portion of a Debenture, if the principal amount of such portion is $1,000 or a whole multiple of $1,000. Provisions of this Indenture
that apply to the repurchase of all of a Debenture also apply to the repurchase of such portion of such Debenture. Upon presentation of any Debenture repurchased in part only, the Company shall execute and the Trustee shall authenticate and make
available for delivery to the holder thereof, at the expense of the Company, a new Debenture or Debentures, of any authorized denomination, in aggregate principal amount equal to the portion of the Debentures presented that is not repurchased.

  
 (b) On or prior to a Repurchase Date, the Company will deposit
with the Trustee or with one or more Paying Agents (or, if the Company is acting as its own Paying Agent, set aside, segregate and hold in trust as provided in Section 5.04) an amount of cash sufficient to repurchase on the Repurchase Date all the
Debentures or portions thereof to be repurchased on such date at the Repurchase Price; provided that if such deposit is made on the Repurchase Date, it must be received by the Trustee or Paying Agent, as the case may be, by 10:00 a.m., New
York City time, on such date. 
  

 31 

 If the Trustee or other Paying Agent appointed by the Company, or the Company or an Affiliate of the
Company, if it or such Affiliate is acting as the Paying Agent, holds cash sufficient to pay the aggregate Repurchase Price of all the Debentures or portions thereof that are to be repurchased as of the Repurchase Date, on or after the Repurchase
Date, (i) such Debentures will cease to be outstanding, (ii) interest on such Debentures will cease to accrue and (iii) all other rights of the holders of such Debentures will terminate, whether or not book-entry transfer of the Debentures has been
made or the Debentures have been delivered to the Trustee or Paying Agent, other than the right to receive the Repurchase Price upon delivery of the Debentures. 
  

(c) Upon receipt by the Trustee (or other Paying Agent appointed by the Company) of a Repurchase Election, the holder of the Debenture in respect of
which such Repurchase Election was given shall (unless such notice is validly withdrawn) thereafter be entitled to receive solely the Repurchase Price with respect to such Debenture. Such Repurchase Price shall be paid to such holder, subject to
receipt of funds and/or Debentures by the Trustee (or other Paying Agent appointed by the Company), promptly (but in no event more than five (5) Business Days) following the later of (x) the Repurchase Date with respect to such Debenture
(provided the holder has satisfied the conditions in Section 3.05(c) or Section 3.06(c), as applicable) and (y) the time of delivery of such Debenture to the Trustee (or other Paying Agent appointed by the Company) by the holder thereof in
the manner required by Section 3.05(c) or Section 3.06(c), as applicable. Debentures in respect of which a Repurchase Election has been given by the holder thereof may not be converted pursuant to Article 15 hereof on or after the date of the
delivery of such Repurchase Election unless such notice has first been validly withdrawn. 
  
 (d) Notwithstanding anything herein to the contrary, any holder delivering to the office of the Trustee (or other Paying Agent appointed by the Company) a Repurchase Election shall have the right to withdraw such
election at any time prior to the close of business on the Business Day preceding the Repurchase Date (or any such later time as may be required by applicable law) by delivery of a written notice of withdrawal to the Trustee (or other Paying Agent
appointed by the Company) specifying: 
  
 (i) the
certificate number, if any, of the Debenture in respect of which such notice of withdrawal is being submitted, or the appropriate Depositary information if the Debenture in respect of which such notice of withdrawal is being submitted is represented
by a Global Debenture, 
  
 (ii) the principal
amount of the Debenture with respect to which such notice of withdrawal is being submitted, and 
  
 (iii) the principal amount, if any, of such Debenture which remains subject to the original Repurchase Election and which has been or will
be delivered for repurchase by the Company. 
  
 The Trustee (or
other Paying Agent appointed by the Company) shall promptly notify the Company of the receipt by it of any Repurchase Election or written notice of withdrawal thereof. 
  

 32 

 (e) The Company will comply with the provisions of Rule 13e-4 and any other tender offer rules under the
Exchange Act to the extent then applicable in connection with the repurchase rights of the holders of Debentures in the event of a Fundamental Change or on any Company Repurchase Date. If then required by applicable law, the Company will file a
Schedule TO or any other schedule required in connection with such repurchase. 
  
 (f) There shall be no repurchase of any Debentures pursuant to Section 3.05 or Section 3.06 if there has occurred at any time prior to, and is continuing on, the Repurchase Date an Event of Default (other than an
Event of Default that is cured by the payment of the Repurchase Price with respect to such Debentures). The Paying Agent will promptly return to the respective holders thereof any Debentures (x) with respect to which a Repurchase Election has been
withdrawn in compliance with this Indenture or (y) held by it during the continuance of an Event of Default (other than a default in the payment of the Repurchase Price with respect to such Debentures) in which case, upon such return, the Repurchase
Election with respect thereto shall be deemed to have been withdrawn. 
  
 (g) The Trustee (or other Paying Agent appointed by the Company) shall return to the Company any cash that remains unclaimed as provided in Section 13.03, for the payment of the Repurchase Price; provided that, to the extent that the
aggregate amount of cash deposited by the Company pursuant to Section 3.08(b) exceeds the aggregate Repurchase Price of the Debentures or portions thereof which the Company is obligated to purchase as of the Repurchase Date, then, unless otherwise
agreed in writing with the Company, promptly after the Business Day following the Repurchase Date, the Trustee shall return any such excess to the Company. 
  
 (h) In the case of a reclassification, change, consolidation, merger, combination, sale or conveyance to which Section 15.06 applies, in which the Common
Stock of the Company is changed or exchanged as a result into the right to receive stock, securities or other property or assets (including cash), which includes shares of Common Stock of the Company or shares of common stock of another Person that
are, or upon issuance will be, traded on a United States national securities exchange or approved for trading on an established automated over-the-counter trading market in the United States and such shares constitute at the time such change or
exchange becomes effective in excess of 50% of the aggregate fair market value of such stock, securities or other property or assets (including cash) (as determined by the Company, which determination shall be conclusive and binding), then the
Person formed by such consolidation or resulting from such merger or which acquires such assets, as the case may be, shall execute and deliver to the Trustee a supplemental indenture (accompanied by an Opinion of Counsel that such supplemental
indenture complies with the Trust Indenture Act as in force at the date of execution of such supplemental indenture) modifying the provisions of this Indenture relating to the right of holders of the Debentures to cause the Company to repurchase the
Debentures following a Fundamental Change, including, without limitation, the applicable provisions of this Article 3 and the definitions of Common Stock and Fundamental Change, as appropriate, as determined in good faith by the Company (which
determination shall be conclusive and binding), to make such provisions apply to such other Person if different from the Company and the common stock issued by such Person (in lieu of the Company and the Common Stock of the Company). 
  

 33 

 ARTICLE 4 
 SUBORDINATION OF DEBENTURES 
  
 Section 4.01. Agreement to Subordinate. The Company agrees, and each Debentureholder by accepting a Debenture agrees, that the Indebtedness,
interest and other obligations of any kind evidenced by the Debentures and this Indenture are subordinated in right of payment, to the extent and in the manner provided in this Article 4, to the prior payment in full in cash of all Senior
Indebtedness (whether outstanding on the date hereof or hereafter created, incurred, assumed or Guaranteed), and that the subordination is for the benefit of the holders of Senior Indebtedness. 
  
 No provisions of this Article 4 shall prevent the occurrence
of any Event of Default. 
  
 Section 4.02. Payment Over of
Proceeds upon Dissolution, Etc. In the event of: 
  
 (a) any insolvency or bankruptcy case or proceeding, or any receivership, liquidation, reorganization or other similar case or proceeding in connection therewith, relating to the Company or to its creditors, as such, or to its assets, or

  
 (b) any liquidation, dissolution or other
winding up of the Company, whether voluntary or involuntary and whether or not involving insolvency or bankruptcy, or 
  
 (c) any assignment for the benefit of creditors or any other marshalling of assets and liabilities of the Company, 
  
 then and in any such event specified in (a), (b) or (c) above (each such event, if any,
herein sometimes referred to as a (“Proceeding”)) the holders of Senior Indebtedness of the Company shall be entitled to receive payment in full in cash of all amounts due or to become due on or in respect of all Senior Indebtedness
of the Company before the Debentureholders are entitled to receive any payment or distribution of any kind or character, whether in cash, property or securities (including any payment or distribution which may be payable or deliverable by reason of
the payment of any other Indebtedness of the Company subordinated to the payment of the Debentures, on account of principal (or premium, if any) or interest on or any other obligation with respect to the Debentures or on account of any purchase or
other acquisition of Debentures by the Company or any subsidiary of the Company or any party on behalf of either the Company or its subsidiaries (all such payments, distributions, purchases and acquisitions, other than the payment or distribution of
stock or securities of the Company referred to in the second succeeding paragraph, herein referred to, individually and collectively, as a “Securities Payment”), and to that end the holders of Senior Indebtedness of the Company
shall be entitled to receive, for application to the payment thereof, any Securities Payment which may be payable or deliverable in respect of the Debentures in any such Proceeding. 
  
 In the event that, notwithstanding the foregoing provisions of this Section 4.02, the Trustee shall have received any
Securities Payment before all Senior Indebtedness of the Company is paid in full in cash and the Trustee has not paid over such Securities Payment to the Debentureholders, then and in such event such Securities Payment shall be paid over or
delivered forthwith to the trustee in bankruptcy, receiver, liquidating trustee, custodian, assignee agent or 

  

 34 

 
other Person making payment or distribution of assets of the Company for application to the payment of all Senior Indebtedness of the Company remaining
unpaid, to the extent necessary to pay all Senior Indebtedness of the Company in full in cash, after giving effect to any concurrent payment or distribution to or for the holders of Senior Indebtedness of the Company. 
  
 For purposes of this Article 4 only, the words “any payment or
distribution of any kind or character, whether in cash, property or securities” shall not be deemed to include a payment or distribution of stock or securities of the Company provided for by a plan of reorganization or readjustment authorized
by an order or decree of a court of competent jurisdiction in a reorganization proceeding under any Bankruptcy Law or of any other corporation provided for by such plan of reorganization or readjustment which stock or securities are subordinated in
right of payment to all then outstanding Senior Indebtedness of the Company to at least the same extent as the Debentures are so subordinated as provided in this Article 4. The consolidation of the Company with, or the merger of the Company into,
another Person or the liquidation or dissolution of the Company following the conveyance or transfer of all or substantially all of its properties and assets as an entirety to another Person upon the terms and conditions set forth in Article 12
shall not be deemed a Proceeding for the purposes of this Section 4.02 if the Person formed by such consolidation or into which the Company is merged or the Person which acquires by conveyance or transfer such properties and assets as an entirety,
as the case may be, shall, as a part of such consolidation, merger, conveyance or transfer, comply with the conditions set forth in Article 12. 
  
 Section 4.03. No Payment When Senior Indebtedness of the Company in Default. (a) In the event that any Payment Default shall have occurred and be
continuing, then no direct or indirect Securities Payment shall be made unless and until such Payment Default shall have been cured or waived in writing (by the applicable holder of Senior Indebtedness with respect to the relevant default) or shall
have ceased to exist or all amounts then due and payable in respect of Senior Indebtedness of the Company shall have been paid in full in cash. 
  
 “Payment Default” means any default in the payment of principal of (or premium, if any) or interest or other obligation
on any Senior Indebtedness of the Company when due, whether at the stated maturity of any such payment or by declaration of acceleration, call for redemption or otherwise. 
  
 (b) In the event that any Senior Nonmonetary Default shall have occurred and be continuing, then, upon the receipt by the
Trustee of written notice (with a copy to the Company) of such Senior Nonmonetary Default from the agent under the Credit Agreement or the trustee under the Senior Secured Note Agreements so long as the Senior Indebtedness under either the Credit
Agreement or the Senior Secured Note Agreements is outstanding and, thereafter, from the trustee or other representative of holders of at least a majority in aggregate principal amount of the Designated Senior Indebtedness at the time outstanding,
no direct or indirect Securities Payment shall be made during the period (the “Payment Blockage Period”) commencing on the date of such receipt of such written notice and ending on the earlier of (i) the date on which such Senior
Nonmonetary Default shall have been cured or waived in writing by the agent for the holders of the Designated Senior Indebtedness initiating the Payment Blockage Period or shall have ceased to exist or all Designated Senior Indebtedness that is the
subject of such Senior Nonmonetary Default shall have been discharged (with the consent of the holders of such 

  

 35 

 
Designated Senior Indebtedness or pursuant to Section 4.09) or paid in full in cash; (ii) the one hundred seventy-ninth (179th) day after the date of such receipt of such written notice; and (iii) the date on which the Payment Blockage Period shall have
been terminated by written notice to the Company and the Trustee from the agent for the holders of the Designated Senior Indebtedness initiating the Payment Blockage Period. In any event, not more than one Payment Blockage Period may be commenced
with respect to the Debentures during any period of three hundred sixty (360) consecutive days. For all purposes of this paragraph, no Senior Nonmonetary Default that existed or was continuing on the date of commencement of any Payment Blockage
Period shall be, or be made, the basis for the commencement of a subsequent Payment Blockage Period, whether or not within a period of three hundred sixty (360) consecutive days, unless such Senior Nonmonetary Default shall have been cured for a
period of not less than ninety (90) consecutive days. 
  
 “Senior Nonmonetary Default” means the occurrence or existence and continuance of any default or event of default with respect to any Designated Senior Indebtedness, other than a Payment Default, permitting the holders of
such Designated Senior Indebtedness to declare such Designated Senior Indebtedness due and payable prior to the date on which it would otherwise become due and payable. 
  
 (c) In the event that, notwithstanding the foregoing, the Company shall make any Securities Payment to the Trustee
prohibited by the foregoing provisions of this Section 4.03, and the Trustee has not paid over this payment to the Debentureholders, then, and in such event, such Securities Payment shall be paid over and delivered forthwith to the holders of Senior
Indebtedness to the extent necessary to make payment in full in cash to the holders of all unpaid Senior Indebtedness. 
  
 The provisions of this Section 4.03 shall not apply to any Securities Payment with respect to which Section 4.02 would be applicable. 
  
 Section 4.04. Subrogation to Rights of Holders of Designated Senior
Indebtedness of the Company. Upon (but not before) the payment in full in cash of all Designated Senior Indebtedness, the holders of the Debentures shall (to the extent that amounts otherwise payable to such holders have been paid to the holders
of Designated Senior Indebtedness pursuant to this Article 4) be subrogated to the rights of any holder of Designated Senior Indebtedness to receive any further payments or distributions applicable to the Designated Senior Indebtedness until the
Debentures are paid in full; and such payments or distributions received by the holders of the Debentures by reason of such subrogation, which otherwise would be paid or distributed to the holders of Designated Senior Indebtedness, shall, as between
the Company and its creditors other than the holders of Designated Senior Indebtedness, on the one hand, and the holders of Debentures, on the other hand, be deemed to be a payment by the Company on account of Designated Senior Indebtedness and not
on account of the Debentures. 
  
 Section 4.05. Provisions
Solely to Define Relative Rights. The provisions of this Article 4 are and are intended solely for the purpose of defining the relative rights of the Debentureholders on the one hand and the holders of Senior Indebtedness of the Company on the
other hand. Nothing contained in this Article 4 or elsewhere in this Indenture or in the Debentures is intended to or shall (a) impair, as among the Company, its creditors other than 

  

 36 

 
holders of Senior Indebtedness of the Company and the Debentureholders, the obligation of the Company, which is absolute and unconditional (and which,
subject to the rights under this Article 4 of the holders of Senior Indebtedness of the Company, is intended to rank equally with all other general obligations of the Company), to pay to the Debentureholders the principal of (and premium, if any)
and interest on the Debentures as and when the same shall become due and payable in accordance with their terms; or (b) affect the relative rights against the Company of the Debentureholders and creditors of the Company other than the holders of
Senior Indebtedness of the Company; or (c) prevent the Trustee or the Debentureholder from exercising all remedies otherwise permitted by applicable law upon default under this Indenture, subject to the rights, if any, under this Article 4 of the
holders of Senior Indebtedness of the Company to receive cash, property and securities otherwise payable or deliverable to the Trustee or such Debentureholder. 
  

Section 4.06. Trustee to Effectuate Subordination. Each Debentureholder by his acceptance thereof authorizes and directs the Trustee on his
behalf to take such action as may be necessary or appropriate to effectuate the subordination provided in this Article 4 and appoints the Trustee his attorney-in-fact for any and all such purposes. 
  
 Section 4.07. No Waiver of Subordination Provisions. No right of any
present or future holder of any Senior Indebtedness of the Company to enforce subordination as herein provided shall at any time in any way be prejudiced or impaired by any act or failure to act on the part of the Company or by any act or failure to
act, in good faith, by any such holder, or by any noncompliance by the Company with the terms, provisions and covenants of this Indenture, regardless of any knowledge thereof any such holder may have or be otherwise charged with. 
  
 Without in any way limiting the generality of the foregoing paragraph, the
holders of Senior Indebtedness of the Company may, at any time and from time to time, without the consent of or notice to the Trustee or the Debentureholders, without incurring responsibility to the Debentureholders and without impairing or
releasing the subordination provided in this Article 4 or the obligations hereunder of the Debentureholders to the holders of Senior Indebtedness of the Company, do any one or more of the following: (i) change the manner, place or terms of payment
or extend the time of payment of, or renew or alter, Senior Indebtedness of the Company, or otherwise amend or supplement in any manner Senior Indebtedness of the Company or any instrument evidencing the same or any agreement under which Senior
Indebtedness of the Company is outstanding; (ii) sell, exchange, release or otherwise deal with any property pledged, mortgaged or otherwise securing Senior Indebtedness of the Company; (iii) release any Person liable in any manner for the
collection of Senior Indebtedness of the Company; and (iv) exercise or refrain from exercising any rights against the Company and any other Person. 
  
 Section 4.08. Notice to the Trustee. The Company shall give prompt written notice to the Trustee of any fact known to the Company which would
prohibit the making of any payment to or by the Trustee in respect of the Debentures; provided, however, that failure to provide such notice shall not affect the subordination of the Debentures provided for herein. Notwithstanding the provisions of
this Article 4 or any other provision of this Indenture, the Trustee shall not be charged with knowledge of the existence of any facts that would prohibit the making of any payment or distribution by the Trustee, and the Trustee may continue to make
payments on the 

  

 37 

 
Debentures, unless a Responsible Officer of the Trustee shall have received at its Corporate Trust Office written notice from the Company, the agent under
the Credit Agreement, trustee under the Senior Secured Note Agreements, or trustee or other representative of the requisite holders of Designated Senior Indebtedness provided for in Section 4.03(b) of facts that would cause the payment of any
obligations with respect to the Debentures to violate this Article 4. 
  
 Section 4.09. Reliance on Judicial Order or Certificate of Liquidating Agent. Upon any payment or distribution of assets of the Company referred to in this Article 4, the Trustee, subject to the provisions of Section 8.01, and the
Debentureholders shall be entitled to rely upon any order or decree entered by any court of competent jurisdiction in which such proceeding is pending, or a certificate of the trustee in bankruptcy, receiver, liquidating trustee, custodian, assignee
for the benefit of creditors, agent or other Person making such payment or distribution, delivered to the Trustee or to the Debentureholders, for the purpose of ascertaining the Persons entitled to participate in such payment or distribution, the
holders of the Senior Indebtedness of the Company and other indebtedness of the Company, the amount thereof or payable thereon, the amount or amounts paid or distributed thereon and all other facts pertinent thereto or to this Article 4. 

 
 Section 4.10. Trustee Not Fiduciary for Holders of Senior Indebtedness
of the Company. The Trustee shall not be deemed to owe any fiduciary duty to the holders of Senior Indebtedness of the Company and shall not be liable to any such holders if it shall in good faith mistakenly, absent negligence or willful
misconduct, pay over or distribute to Debentureholders or to the Company, or to any other Person cash, property or securities to which any holders of Senior Indebtedness of the Company shall be entitled by virtue of this Article 4 or otherwise.

  
 Section 4.11. Rights of Trustee as Holder of Senior
Indebtedness of the Company; Preservation of Trustee’s Rights. The Trustee in its individual capacity shall be entitled to all the rights set forth in this Article 4 with respect to any Senior Indebtedness of the Company which may at any
time be held by it, to the same extent as any other holder of Senior Indebtedness of the Company, and nothing in this Indenture shall deprive the Trustee of any of its rights as such holder. 
  
 Nothing in this Article 4 shall apply to claims of, or payments to, the
Trustee under or pursuant to Section 8.06. 
  
 Section 4.12.
Article Applicable to Paying Agents. In case at any time Paying Agent other than the Trustee shall have been appointed by the Company and be then acting hereunder, the term “Trustee” as used in this Article 4 shall in such case (unless
the context otherwise requires) be construed as extending to and including such Paying Agent within its meaning as fully for all intents and purposes as if such Paying Agent were named in this Article 4 in addition to or in place of the Trustee;
provided, however, that this Section 4.13 shall not apply to the Company, or any Affiliate of the Company if it or such Affiliate acts as Paying Agent. 
  
 Section 4.13. Amendments. The provisions of this Article 4 (including, without limitation, any definitions or other sections include by reference
or incorporation) shall not be amended or modified without the written consent of the holders of all Senior Indebtedness. 
  

 38 

 ARTICLE 5 
 PARTICULAR COVENANTS OF THE COMPANY 
  
 Section 5.01. Payment of Principal and Interest. The Company covenants and agrees that it will duly and punctually pay or cause to be paid the
principal of (including any Redemption Price or Repurchase Price pursuant to Article 3) and interest on each of the Debentures at the places, at the respective times and in the manner provided herein and in the Debentures. 
  
 Section 5.02. Maintenance of Office or Agency. The Company will
maintain an office or agency in the Borough of Manhattan, The City of New York, initially located at Wells Fargo Bank, c/o Deutsche Bank, 14 Wall Street, 4th Floor, Window #44, New York, NY 10005, Attn: John Maloney/Account 092192, Wells Fargo
Account # 15206900 (Navigant International), (212) 618-2319, where the Debentures may be surrendered for registration of transfer or exchange or for presentation for payment or for conversion, redemption or repurchase and where notices and demands
to or upon the Company in respect of the Debentures and this Indenture may be served. The Company will give prompt written notice to the Trustee of the location, and any change in the location, of such office or agency not designated or appointed by
the Trustee. If at any time the Company shall fail to maintain any such required office or agency or shall fail to furnish the Trustee with the address thereof, such presentations, surrenders, notices and demands may be made or served at the
Corporate Trust Office. 
  
 The Company may also from time to time
designate co-registrars and one or more offices or agencies where the Debentures may be presented or surrendered for any or all such purposes and may from time to time rescind such designations. The Company will give prompt written notice of any
such designation or rescission and of any change in the location of any such other office or agency. 
  
 The Company hereby initially designates the Trustee as Paying Agent, Debenture Registrar, Custodian and Conversion Agent, and each of the Corporate Trust
Office and the office or agency of the Trustee in the Borough of Manhattan shall be considered as one such office or agency of the Company for each of the aforesaid purposes. The office of Wells Fargo Bank, c/o Deutsche Bank, 14 Wall Street, 4th
Floor, Window #44, New York, NY 10005, Attention: John Maloney/Account 092192, Wells Fargo Account # 15206900 (Navigant International), (212) 618-2319 shall initially be such office or agency for all of the aforesaid purposes. 
  
 So long as the Trustee is the Debenture Registrar, the Trustee agrees to
mail, or cause to be mailed, the notices set forth in Section 8.10(a) and the third paragraph of Section 8.11. If co-registrars have been appointed in accordance with this Section 5.02, the Trustee shall mail such notices only to the Company and the
holders of Debentures it can identify from its records. 
  
 Section 5.03. Appointments to Fill Vacancies in Trustee’s Office. The Company, whenever necessary to avoid or fill a vacancy in the office of Trustee, will appoint, in the manner provided in Section 8.10, a Trustee, so that
there shall at all times be a Trustee hereunder. 
  

 39 

 Section 5.04. Provisions as to Paying Agent. (a) If the Company shall appoint a Paying Agent other
than the Trustee, or if the Trustee shall appoint such a Paying Agent, the Company will cause such Paying Agent to execute and deliver to the Trustee an instrument in which such Paying Agent shall agree with the Trustee, subject to the provisions of
this Section 5.04: 
  
 (1) that it will hold all
sums held by it as such agent for the payment of the principal of or interest on the Debentures (whether such sums have been paid to it by the Company or by any other obligor on the Debentures) in trust for the benefit of the holders of the
Debentures; 
  
 (2) that it will give the Trustee
notice of any failure by the Company (or by any other obligor on the Debentures) to make any payment of the principal of or interest on the Debentures when the same shall be due and payable; and 
  
 (3) that at any time during the continuance of an Event of
Default, upon request of the Trustee, it will forthwith pay to the Trustee all sums so held in trust. 
  
 The Company shall, on or before each due date of the principal of or interest on the Debentures, deposit with the Paying Agent a sum (in funds which are
immediately available on the due date for such payment) sufficient to pay such principal or interest, and (unless such Paying Agent is the Trustee) the Company will promptly notify the Trustee of any failure to take such action; provided that
if such deposit is made on the due date, such deposit shall be received by the Paying Agent by 10:00 a.m., New York City time, on such date. 
  
 (b) If the Company shall act as its own Paying Agent, it will, on or before each due date of the principal of or interest on the Debentures, set aside,
segregate and hold in trust for the benefit of the holders of the Debentures a sum sufficient to pay such principal or interest so becoming due and will promptly notify the Trustee of any failure to take such action and of any failure by the Company
(or any other obligor under the Debentures) to make any payment of the principal of or interest on the Debentures when the same shall become due and payable. 
  
 (c) Anything in this Section 5.04 to the contrary notwithstanding, the Company may, at any time, for the purpose of obtaining a satisfaction and discharge
of this Indenture, or for any other reason, pay or cause to be paid to the Trustee all sums held in trust by the Company or any Paying Agent hereunder as required by this Section 5.04, such sums to be held by the Trustee upon the trusts herein
contained and upon such payment by the Company or any Paying Agent to the Trustee, the Company or such Paying Agent shall be released from all further liability with respect to such sums. 
  
 (d) Anything in this Section 5.04 to the contrary notwithstanding, the agreement to hold sums in trust as provided in this
Section 5.04 is subject to Sections 13.02 and 13.03. 
  
 The
Trustee shall not be responsible for the actions of any other Paying Agents (including the Company if acting as its own Paying Agent) and shall have no control of any funds held by such other Paying Agents. 
  
 Section 5.05. Existence. Subject to Article 12, the Company will do or
cause to be done all things necessary to preserve and keep in full force and effect its existence and rights (charter 

  

 40 

 
and statutory); provided that the Company shall not be required to preserve any such right if the Company shall determine that the preservation
thereof is no longer desirable in the conduct of the business of the Company and that the loss thereof is not disadvantageous in any material respect to the Debentureholders. 
  
 Section 5.06. Rule 144A Information Requirement. Within the period prior to the expiration of the holding period
applicable to sales thereof under Rule 144(k) under the Securities Act (or any successor provision), the Company covenants and agrees that it shall, during any period in which it is not subject to Section 13 or 15(d) under the Exchange Act, make
available to any holder or beneficial holder of Debentures or any Common Stock issued upon conversion thereof which continue to be Restricted Securities in connection with any sale thereof and any prospective purchaser of Debentures or such Common
Stock designated by such holder or beneficial holder, the information required pursuant to Rule 144A(d)(4) under the Securities Act upon the request of any holder or beneficial holder of the Debentures or such Common Stock and it will take such
further action as any holder or beneficial holder of such Debentures or such Common Stock may reasonably request, all to the extent required from time to time to enable such holder or beneficial holder to sell its Debentures or Common Stock without
registration under the Securities Act within the limitation of the exemption provided by Rule 144A, as such Rule may be amended from time to time. Upon the request of any holder or any beneficial holder of the Debentures or such Common Stock, the
Company will deliver to such holder a written statement as to whether it has complied with such requirements. 
  
 Section 5.07. Stay, Extension and Usury Laws. The Company covenants (to the extent that it may lawfully do so) that it shall not at any time insist
upon, plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay, extension or usury law or other law which would prohibit or forgive the Company from paying all or any portion of the principal of or interest on the
Debentures as contemplated herein, wherever enacted, now or at any time hereafter in force, or which may affect the covenants or the performance of this Indenture and the Company (to the extent it may lawfully do so) hereby expressly waives all
benefit or advantage of any such law, and covenants that it will not, by resort to any such law, hinder, delay or impede the execution of any power herein granted to the Trustee, but will suffer and permit the execution of every such power as though
no such law had been enacted. 
  
 Section 5.08. Compliance
Certificate. The Company shall deliver to the Trustee, within one hundred twenty (120) days after the end of each fiscal year of the Company (which fiscal year of the Company is presently the 52- or 53-week fiscal year ending on the last Sunday
in December), a certificate signed by either the principal executive officer, principal financial officer or principal accounting officer of the Company, stating whether or not to the best knowledge of the signer thereof the Company is in default in
the performance and observance of any of the terms, provisions and conditions of this Indenture (without regard to any period of grace or requirement of notice provided hereunder) and, if the Company shall be in default, specifying all such defaults
and the nature and the status thereof of which the signer may have knowledge. 
  
 The Company will deliver to the Trustee, promptly upon becoming aware of (i) any default in the performance or observance of any covenant, agreement or condition contained in this Indenture, or (ii) any Event of
Default, an Officers’ Certificate specifying with particularity 

  

 41 

 
such default or Event of Default and further stating what action the Company has taken, is taking or proposes to take with respect thereto. 
  
 Any notice required to be given under this Section 5.08 shall be delivered to
a Responsible Officer of the Trustee at its Corporate Trust Office. 
  
 Section 5.09. Additional Amounts Notice. In the event that the Company is required to pay Additional Amounts to holders of Debentures pursuant to the Registration Rights Agreement, the Company will provide written notice
(“Additional Amounts Notice”) to the Trustee of its obligation to pay Additional Amounts no later than fifteen (15) days prior to the proposed payment date for the Additional Amounts, and the Additional Amounts Notice shall set
forth the amount of Additional Amounts to be paid by the Company on such payment date. The Trustee shall not at any time be under any duty or responsibility to any holder of Debentures to determine the Additional Amounts, or with respect to the
nature, extent or calculation of the amount of Additional Amounts when made, or with respect to the method employed in such calculation of the Additional Amounts. 
  
 ARTICLE 6 
 DEBENTUREHOLDERS’ LISTS AND REPORTS BY THE COMPANY AND THE TRUSTEE 
  
 Section 6.01. Debentureholders’ Lists. The Company covenants and
agrees that it will furnish or cause to be furnished to the Trustee, semiannually, not more than fifteen (15) days after each March 15 and September 15 in each year beginning with March 15, 2004, and at such other times as the Trustee may request in
writing, within thirty (30) days after receipt by the Company of any such request (or such lesser time as the Trustee may reasonably request in order to enable it to timely provide any notice to be provided by it hereunder), a list in such form as
the Trustee may reasonably require of the names and addresses of the holders of Debentures as of a date not more than fifteen (15) days (or such other date as the Trustee may reasonably request in order to so provide any such notices) prior to the
time such information is furnished, except that no such list need be furnished by the Company to the Trustee so long as the Trustee is acting as the sole Debenture Registrar. 
  
 Section 6.02. Preservation and Disclosure of Lists. (a) The Trustee shall preserve, in as current a form as is
reasonably practicable, all information as to the names and addresses of the holders of Debentures contained in the most recent list furnished to it as provided in Section 6.01 or maintained by the Trustee in its capacity as Debenture Registrar or
co-registrar in respect of the Debentures, if so acting. The Trustee may destroy any list furnished to it as provided in Section 6.01 upon receipt of a new list so furnished. 
  
 (b) The rights of Debentureholders to communicate with other holders of Debentures with respect to their rights under this
Indenture or under the Debentures, and the corresponding rights and duties of the Trustee, shall be as provided by the Trust Indenture Act. 
  
 (c) Every Debentureholder, by receiving and holding the same, agrees with the Company and the Trustee that neither the Company nor the Trustee nor any
agent of either of them shall be held accountable by reason of any disclosure of information as to names and addresses of holders of Debentures made pursuant to the Trust Indenture Act. 
  

 42 

 Section 6.03. Reports by Trustee. (a) Within sixty (60) days after May 15 of each year commencing
with the year 2004, the Trustee shall transmit to holders of Debentures such reports dated as of May 15 of the year in which such reports are made concerning the Trustee and its actions under this Indenture as may be required pursuant to the Trust
Indenture Act at the times and in the manner provided pursuant thereto. In the event that no events have occurred under the applicable sections of the Trust Indenture Act, the Trustee shall be under no duty or obligation to provide such reports.

  
 (b) A copy of such report shall, at the time of such
transmission to holders of Debentures, be filed by the Trustee with each stock exchange and automated quotation system upon which the Debentures are listed and with the Company. The Company will promptly notify the Trustee in writing when the
Debentures are listed on any stock exchange or automated quotation system or delisted therefrom. 
  
 Section 6.04. Reports by the Company. The Company shall file with the Trustee (and the Commission if at any time after the Indenture becomes
qualified under the Trust Indenture Act), and transmit to holders of Debentures, such information, documents and other reports and such summaries thereof, as may be required pursuant to the Trust Indenture Act at the times and in the manner provided
pursuant to such Act, whether or not the Debentures are governed by such Act; provided that any such information, documents or reports required to be filed with the Commission pursuant to Section 13 or 15(d) of the Exchange Act shall be filed
with the Trustee within fifteen (15) days after the same is so required to be filed with the Commission. Delivery of such reports, information and documents to the Trustee is for informational purposes only and the Trustee’s receipt of such
shall not constitute constructive notice of any information contained therein or determinable from information contained therein, including the Company’s compliance with any of its covenants hereunder (as to which the Trustee is entitled to
rely exclusively on Officers’ Certificates). 
  
 ARTICLE 7

 REMEDIES OF THE TRUSTEE AND DEBENTUREHOLDERS
ON AN EVENT OF DEFAULT 
  
 Section 7.01. Events of Default. In case one or more of the following events (each, an “Event of Default”) (whatever the reason
for such Event of Default and whether it shall be voluntary or involuntary or be effected by operation of law or pursuant to any judgment, decree or order of any court or any order, rule or regulation of any administrative or governmental body)
shall have occurred and be continuing: 
  
 (a)
default in the payment of any installment of interest upon any of the Debentures as and when the same shall become due and payable, and continuance of such default for a period of thirty (30) days (whether or not such payment is prohibited by
Article 4); or 
  
 (b) default in the payment of
the principal of any of the Debentures as and when the same shall become due and payable either at maturity or in connection with any redemption or repurchase, in each case pursuant to Article 3, by acceleration or otherwise (whether or not such
payment is prohibited by Article 4); or 
  

 43 

 (c) default in the Company’s obligation to convert the Debentures upon the exercise
of a holder’s rights pursuant to Article 15; or 
  
 (d) default in the Company’s obligation to repurchase the Debentures at the option of a holder upon a Fundamental Change pursuant to Section 3.05 or on specified dates pursuant to Section 3.06; or 
  
 (e) failure to provide notice of the occurrence of a
Fundamental Change on a timely basis as required by Section 3.05; or 
  
 (f) default in the Company’s obligation to redeem the Debentures after it has exercised its option to redeem; or 
  
 (g) failure on the part of the Company duly to observe or perform any other of the covenants or agreements on the part of the Company in
the Debentures or in this Indenture (other than a covenant or agreement a default in whose performance or whose breach is elsewhere in this Section 7.01 specifically dealt with) continued for a period of sixty (60) days after the date on which
written notice of such failure, requiring the Company to remedy the same, shall have been given to the Company by the Trustee, or to the Company and a Responsible Officer of the Trustee by the holders of at least 25% in aggregate principal amount of
the Debentures at the time outstanding determined in accordance with Section 9.04; or 
  
 (h) default by the Company or any of its subsidiaries in the payment of the principal or interest on any mortgage, agreement or other
instrument under which there may be outstanding, or by which there may be secured or evidenced, any of the indebtedness of the Company or any of its subsidiaries for money borrowed in excess of $10,000,000 in the aggregate, whether such indebtedness
now exists or shall hereafter be created, resulting in such indebtedness becoming or being declared due and payable, and such acceleration shall not have been rescinded or annulled within thirty (30) days after written notice of such acceleration
has been received by the Company or such subsidiary; or 
  
 (i) final unsatisfied judgments not covered by insurance aggregating in excess of $10,000,000 rendered against the Company or any of its subsidiaries and not stayed, bonded or discharged within a period of sixty (60)
days; or 
  
 (j) the Company shall commence a
voluntary case or other proceeding seeking liquidation, reorganization or other relief with respect to the Company or its debts under any bankruptcy, insolvency or other similar law now or hereafter in effect or seeking the appointment of a trustee,
receiver, liquidator, custodian or other similar official of the Company or any substantial part of the property of the Company, or shall consent to any such relief or to the appointment of or taking possession by any such official in an involuntary
case or other proceeding commenced against the Company, or shall make a general assignment for the benefit of creditors, or shall fail generally to pay its debts as they become due; or 
  

 44 

 (k) an involuntary case or other proceeding shall be commenced against the Company
seeking liquidation, reorganization or other relief with respect to the Company or its debts under any bankruptcy, insolvency or other similar law now or hereafter in effect or seeking the appointment of a trustee, receiver, liquidator, custodian or
other similar official of the Company or any substantial part of the property of the Company, and such involuntary case or other proceeding remains undismissed or unstayed and in effect for a period of sixty (60) days; 
  
 then, and in each and every such case (other than an Event of Default specified in Section
7.01(j) or 7.01(k)), unless the principal of all of the Debentures shall have already become due and payable, either the Trustee or the holders of not less than 25% in aggregate principal amount of the Debentures then outstanding hereunder
determined in accordance with Section 9.04, by notice in writing to the Company (and to the Trustee if given by Debentureholders), may declare the principal of all the Debentures and the interest accrued thereon to be due and payable immediately,
and upon any such declaration the same shall become and shall be immediately due and payable, anything in this Indenture or in the Debentures contained to the contrary notwithstanding. If an Event of Default specified in Section 7.01(j) or 7.01(k)
occurs, the principal of all the Debentures and the interest accrued thereon shall be immediately and automatically due and payable without necessity of further action. This provision, however, is subject to the conditions that if, at any time after
the principal of the Debentures shall have been so declared due and payable, and before any judgment or decree for the payment of the monies due shall have been obtained or entered as hereinafter provided, the Company shall pay or shall deposit with
the Trustee a sum sufficient to pay all matured installments of interest upon all Debentures and the principal of any and all Debentures which shall have become due otherwise than by acceleration (with interest on overdue installments of interest
(to the extent that payment of such interest is enforceable under applicable law) and on such principal at the rate borne by the Debentures, to the date of such payment or deposit) and amounts due to the Trustee pursuant to Section 8.06, and if any
and all defaults under this Indenture, other than the nonpayment of principal of and accrued interest on Debentures which shall have become due by acceleration, shall have been cured or waived pursuant to Section 7.07, then and in every such case
the holders of a majority in aggregate principal amount of the Debentures then outstanding, by written notice to the Company and to the Trustee, may waive all defaults or Events of Default and rescind and annul such declaration and its consequences;
but no such waiver or rescission and annulment shall extend to or shall affect any subsequent default or Event of Default, or shall impair any right consequent thereon. The Company shall notify in writing a Responsible Officer of the Trustee,
promptly upon becoming aware thereof, of any Event of Default. 
  
 In case the Trustee shall have proceeded to enforce any right under this Indenture and such proceedings shall have been discontinued or abandoned because of such waiver or rescission and annulment or for any other reason or shall have been
determined adversely to the Trustee, then and in every such case the Company, the holders of Debentures, and the Trustee shall be restored respectively to their several positions and rights hereunder, and all rights, remedies and powers of the
Company, the holders of Debentures, and the Trustee shall continue as though no such proceeding had been taken. 
  
 Section 7.02. Payments of Debentures on Default; Suit Therefor. The Company covenants that (a) in case default shall be made in the payment of any
installment of interest 

  

 45 

 
upon any of the Debentures as and when the same shall become due and payable, and such default shall have continued for a period of thirty (30) days, or (b)
in case default shall be made in the payment of the principal of any of the Debentures as and when the same shall have become due and payable, whether at maturity of the Debentures or in connection with any redemption, repurchase, acceleration,
declaration or otherwise, then, upon demand of the Trustee, the Company will pay to the Trustee, for the benefit of the holders of the Debentures, the whole amount that then shall have become due and payable on all such Debentures for principal or
interest, as the case may be, with interest upon the overdue principal and (to the extent that payment of such interest is enforceable under applicable law) upon the overdue installments of interest at the rate borne by the Debentures, and, in
addition thereto, such further amount as shall be sufficient to cover the costs and expenses of collection, including reasonable compensation to the Trustee, its agents, attorneys and counsel, and all other amounts due the Trustee under Section
8.06. Until such demand by the Trustee, the Company may pay the principal of and interest on the Debentures to the registered holders, whether or not the Debentures are overdue. 
  
 In case the Company shall fail forthwith to pay such amounts upon such demand, the Trustee, in its own name and as trustee
of an express trust, shall be entitled and empowered to institute any actions or proceedings at law or in equity for the collection of the sums so due and unpaid, and may prosecute any such action or proceeding to judgment or final decree, and may
enforce any such judgment or final decree against the Company or any other obligor on the Debentures and collect in the manner provided by law out of the property of the Company or any other obligor on the Debentures wherever situated the monies
adjudged or decreed to be payable. 
  
 In case there shall be
pending proceedings for the bankruptcy or for the reorganization of the Company or any other obligor on the Debentures under Title 11 of the United States Code, or any other applicable law, or in case a receiver, assignee or trustee in bankruptcy or
reorganization, liquidator, sequestrator or similar official shall have been appointed for or taken possession of the Company or such other obligor, the property of the Company or such other obligor, or in the case of any other judicial proceedings
relative to the Company or such other obligor upon the Debentures, or to the creditors or property of the Company or such other obligor, the Trustee, irrespective of whether the principal of the Debentures shall then be due and payable as therein
expressed or by declaration or otherwise and irrespective of whether the Trustee shall have made any demand pursuant to the provisions of this Section 7.02, shall be entitled and empowered, by intervention in such proceedings or otherwise, to file
and prove a claim or claims for the whole amount of principal and interest owing and unpaid in respect of the Debentures, and, in case of any judicial proceedings, to file such proofs of claim and other papers or documents as may be necessary or
advisable in order to have the claims of the Trustee and of the Debentureholders allowed in such judicial proceedings relative to the Company or any other obligor on the Debentures, its or their creditors, or its or their property, and to collect
and receive any monies or other property payable or deliverable on any such claims, and to distribute the same after the deduction of any amounts due the Trustee under Section 8.06, and to take any other action with respect to such claims, including
participating as a member of any official committee of creditors, as it reasonably deems necessary or advisable, and, unless prohibited by law or applicable regulations, and any receiver, assignee or trustee in bankruptcy or reorganization,
liquidator, custodian or similar official is hereby authorized by each of the Debentureholders to make such payments to the Trustee, and, in the event that the Trustee shall 

  

 46 

 
consent to the making of such payments directly to the Debentureholders, to pay to the Trustee any amount due it for reasonable compensation, expenses,
advances and disbursements, including counsel fees and expenses incurred by it up to the date of such distribution. To the extent that such payment of reasonable compensation, expenses, advances and disbursements out of the estate in any such
proceedings shall be denied for any reason, payment of the same shall be secured by a Lien on, and shall be paid out of, any and all distributions, dividends, monies, securities and other property which the holders of the Debentures may be entitled
to receive in such proceedings, whether in liquidation or under any plan of reorganization or arrangement or otherwise. 
  
 All rights of action and of asserting claims under this Indenture, or under any of the Debentures, may be enforced by the Trustee without the possession
of any of the Debentures, or the production thereof at any trial or other proceeding relative thereto, and any such suit or proceeding instituted by the Trustee shall be brought in its own name as trustee of an express trust, and any recovery of
judgment shall, after provision for the payment of the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel, be for the ratable benefit of the holders of the Debentures. 
  
 In any proceedings brought by the Trustee (and in any proceedings involving
the interpretation of any provision of this Indenture to which the Trustee shall be a party), the Trustee shall be held to represent all the holders of the Debentures, and it shall not be necessary to make any holders of the Debentures parties to
any such proceedings. 
  
 Section 7.03. Application of Monies
Collected by Trustee. Any monies collected by the Trustee pursuant to this Article 7 shall be applied in the order following, at the date or dates fixed by the Trustee for the distribution of such monies, upon presentation of the several
Debentures, and stamping thereon the payment, if only partially paid, and upon surrender thereof, if fully paid: 
  
 FIRST: To the payment of all amounts due the Trustee under Section 8.06; 
  
 SECOND: In case the principal of the outstanding Debentures shall not have become due and be unpaid, to the
payment of interest on the Debentures in default in the order of the maturity of the installments of such interest, with interest (to the extent that such interest has been collected by the Trustee) upon the overdue installments of interest at the
rate borne by the Debentures, such payments to be made ratably to the Persons entitled thereto; 
  
 THIRD: In case the principal of the outstanding Debentures shall have become due, by declaration or otherwise, and be unpaid, to the
payment of the whole amount then owing and unpaid upon the Debentures for principal and interest, with interest on the overdue principal and (to the extent that such interest has been collected by the Trustee) upon overdue installments of interest
at the rate borne by the Debentures, and in case such monies shall be insufficient to pay in full the whole amounts so due and unpaid upon the Debentures, then to the payment of such principal and interest without preference or priority of principal
over interest, or of interest over principal, or of any installment of interest over any other installment of interest, or of any Debenture over any 

  

 47 

 
other Debenture, ratably to the aggregate of such principal and accrued and unpaid interest; and 
  
 FOURTH: To the payment of the remainder, if any, to the
Company or any other Person lawfully entitled thereto. 
  
 Section
7.04. Proceedings by Debentureholder. No holder of any Debenture shall have any right by virtue of or by reference to any provision of this Indenture to institute any suit, action or proceeding in equity or at law upon or under or with
respect to this Indenture, or for the appointment of a receiver, trustee, liquidator, custodian or other similar official, or for any other remedy hereunder, unless such holder previously shall have given to the Trustee written notice of an Event of
Default and of the continuance thereof, as hereinbefore provided, and unless also the holders of not less than 25% in aggregate principal amount of the Debentures then outstanding shall have made written request upon the Trustee to institute such
action, suit or proceeding in its own name as Trustee hereunder and shall have offered to the Trustee such reasonable security or indemnity satisfactory to the Trustee as it may require against the costs, expenses and liabilities to be incurred
therein or thereby, and the Trustee for sixty (60) days after its receipt of such notice, request and offer of reasonable indemnity, shall have neglected or refused to institute any such action, suit or proceeding and no direction inconsistent with
such written request shall have been given to the Trustee pursuant to Section 7.07; it being understood and intended, and being expressly covenanted by the taker and holder of every Debenture with every other taker and holder and the Trustee, that
no one or more holders of Debentures shall have any right in any manner whatever by virtue of or by reference to any provision of this Indenture to affect, disturb or prejudice the rights of any other holder of Debentures, or to obtain or seek to
obtain priority over or preference to any other such holder, or to enforce any right under this Indenture, except in the manner herein provided and for the equal, ratable and common benefit of all holders of Debentures (except as otherwise provided
herein). For the protection and enforcement of this Section 7.04, each and every Debentureholder and the Trustee shall be entitled to such relief as can be given either at law or in equity. 
  
 Notwithstanding any other provision of this Indenture and any provision of
any Debenture, the right of any holder of any Debenture to receive payment of the principal of (including any Redemption Price or Repurchase Price pursuant to Article 3) and accrued interest on such Debenture on or after the respective due dates
expressed in such Debenture, or to institute suit for the enforcement of any such payment on or after such respective dates against the Company, shall not be impaired or affected without the consent of such holder. 
  
 Anything in this Indenture or the Debentures to the contrary notwithstanding,
the holder of any Debenture, without the consent of either the Trustee or the holder of any other Debenture, on its own behalf and for its own benefit, may enforce, and may institute and maintain any proceeding suitable to enforce, its rights of
conversion as provided herein. 
  
 Section 7.05. Proceedings by
Trustee. In case of an Event of Default, the Trustee may, in its discretion, proceed to protect and enforce the rights vested in it by this Indenture by such appropriate judicial proceedings as are necessary to protect and enforce any of such
rights, either by suit in equity or by action at law or by proceeding in bankruptcy or otherwise, whether for the specific enforcement of any covenant or agreement contained in this Indenture or in aid of the 

  

 48 

 
exercise of any power granted in this Indenture, or to enforce any other legal or equitable right vested in the Trustee by this Indenture or by law.

  
 Section 7.06. Remedies Cumulative and Continuing.
Except as provided in Section 2.06, all powers and remedies given by this Article 7 to the Trustee or to the Debentureholders shall, to the extent permitted by law, be deemed cumulative and not exclusive of any thereof or of any other powers and
remedies available to the Trustee or the holders of the Debentures, by judicial proceedings or otherwise, to enforce the performance or observance of the covenants and agreements contained in this Indenture, and no delay or omission of the Trustee
or of any holder of any of the Debentures to exercise any right or power accruing upon any default or Event of Default occurring and continuing as aforesaid shall impair any such right or power, or shall be construed to be a waiver of any such
default or any acquiescence therein, and, subject to the provisions of Section 7.04, every power and remedy given by this Article 7 or by law to the Trustee or to the Debentureholders may be exercised from time to time, and as often as shall be
deemed expedient, by the Trustee or by the Debentureholders. 
  
 Section 7.07. Direction of Proceedings and Waiver of Defaults by Majority of Debentureholders. The holders of a majority in aggregate principal amount of the Debentures at the time outstanding determined in accordance with Section
9.04 shall have the right to direct the time, method and place of conducting any proceeding for any remedy available to the Trustee or exercising any trust or power conferred on the Trustee; provided that (a) such direction shall not be in
conflict with any rule of law or with this Indenture, (b) the Trustee may take any other action which is not inconsistent with such direction and (c) the Trustee may decline to take any action that would benefit some Debentureholders to the
detriment of other Debentureholders. The holders of a majority in aggregate principal amount of the Debentures at the time outstanding determined in accordance with Section 9.04 may, on behalf of the holders of all of the Debentures, waive any past
default or Event of Default hereunder and its consequences, except (i) a default in the payment of interest on, or the principal of, the Debentures, (ii) a failure by the Company to convert any Debentures into Common Stock, (iii) a default in the
payment of the Redemption Price pursuant to Section 3.03, (iv) a default in the payment of the Fundamental Change Repurchase Price pursuant to Section 3.05 or Company Repurchase Price pursuant to Section 3.06 or (v) a default in respect of a
covenant or provisions hereof which under Article 11 cannot be modified or amended without the consent of the holders of each or all Debentures then outstanding or affected thereby. Upon any such waiver, the Company, the Trustee and the holders of
the Debentures shall be restored to their former positions and rights hereunder; but no such waiver shall extend to any subsequent or other default or Event of Default or impair any right consequent thereon. Whenever any default or Event of Default
hereunder shall have been waived as permitted by this Section 7.07, said default or Event of Default shall for all purposes of the Debentures and this Indenture be deemed to have been cured and to be not continuing; but no such waiver shall extend
to any subsequent or other default or Event of Default or impair any right consequent thereon. 
  
 Section 7.08. Notice of Defaults. The Trustee shall, within ninety (90) days after a Responsible Officer of the Trustee has knowledge of the occurrence of a default, mail to all Debentureholders, as the names
and addresses of such holders appear upon the Debenture Register, notice of all defaults known to a Responsible Officer, unless such defaults shall have been cured or waived before the giving of such notice; provided that except in the case
of default 

  

 49 

 
in the payment of the principal of or interest on any of the Debentures, the Trustee shall be protected in withholding such notice if and so long as a trust
committee of directors and/or Responsible Officers of the Trustee in good faith determines that the withholding of such notice is in the interests of the Debentureholders. For the purpose of this Section 7.08, the term “default”
means any event which is, or after notice or lapse of time or both would become, an Event of Default. 
  
 Section 7.09. Undertaking to Pay Costs. All parties to this Indenture agree, and each holder of any Debenture by its acceptance thereof shall be
deemed to have agreed, that any court may, in its discretion, require, in any suit for the enforcement of any right or remedy under this Indenture, or in any suit against the Trustee for any action taken or omitted by it as Trustee, the filing by
any party litigant in such suit of an undertaking to pay the costs of such suit and that such court may in its discretion assess reasonable costs, including reasonable attorneys’ fees and expenses, against any party litigant in such suit,
having due regard to the merits and good faith of the claims or defenses made by such party litigant; provided that the provisions of this Section 7.09 (to the extent permitted by law) shall not apply to any suit instituted by the Trustee, to
any suit instituted by any Debentureholder, or group of Debentureholders, holding in the aggregate more than ten percent in principal amount of the Debentures at the time outstanding determined in accordance with Section 9.04, or to any suit
instituted by any Debentureholder for the enforcement of the payment of the principal of or interest on any Debenture on or after the due date expressed in such Debenture or to any suit for the enforcement of the right to convert any Debenture in
accordance with the provisions of Article 15. 
  
 ARTICLE 8

 THE TRUSTEE 
  
 Section 8.01. Duties and Responsibilities of Trustee. The Trustee, prior to the occurrence of an Event of Default and after the curing of all
Events of Default which may have occurred, undertakes to perform such duties and only such duties as are specifically set forth in this Indenture. In case an Event of Default has occurred (which has not been cured or waived), the Trustee shall
exercise such of the rights and powers vested in it by this Indenture, and use the same degree of care and skill in their exercise, as a prudent person would exercise or use under the circumstances in the conduct of his own affairs. 
  
 No provision of this Indenture shall be construed to relieve the Trustee from
liability for its own negligent action, its own negligent failure to act or its own willful misconduct, except that: 
  
 (a) prior to the occurrence of an Event of Default and after the curing or waiving of all Events of Default which may have occurred:

  
 (i) the duties and obligations of the Trustee
shall be determined solely by the express provisions of this Indenture and the Trust Indenture Act, and the Trustee shall not be liable except for the performance of such duties and obligations as are specifically set forth in this Indenture and no
implied covenants or obligations shall be read into this Indenture and the Trust Indenture Act against the Trustee; and 
  

 50 

 (ii) in the absence of bad faith on the part of the Trustee, the Trustee may conclusively
rely as to the truth of the statements and the correctness of the opinions expressed therein, upon any certificates or opinions furnished to the Trustee and conforming to the requirements of this Indenture; but, in the case of any such certificates
or opinions which by any provisions hereof are specifically required to be furnished to the Trustee, the Trustee shall be under a duty to examine the same to determine whether or not they conform to the requirements of this Indenture (but need not
confirm or investigate the accuracy of mathematical calculations or other facts stated therein); 
  
 (b) the Trustee shall not be liable for any error of judgment made in good faith by a Responsible Officer or Officers of the Trustee,
unless the Trustee was negligent in ascertaining the pertinent facts; 
  
 (c) the Trustee shall not be liable with respect to any action taken or omitted to be taken by it in good faith in accordance with the written direction of the holders of not less than a majority in principal amount
of the Debentures at the time outstanding determined as provided in Section 9.04 relating to the time, method and place of conducting any proceeding for any remedy available to the Trustee, or exercising any trust or power conferred upon the
Trustee, under this Indenture; 
  
 (d) the
Trustee shall not be liable in respect of any payment (as to the correctness of amount, entitlement to receive or any other matters relating to payment) or notice effected by the Company or any Paying Agent or any records maintained by any
co-registrar with respect to the Debentures; and 
  
 (e) if any party fails to deliver a notice relating to an event the fact of which, pursuant to this Indenture, requires notice to be sent to the Trustee, the Trustee may conclusively rely on its failure to receive such notice as reason to
act as if no such event occurred. 
  
 The Trustee shall not be
deemed to have knowledge or notice of any default (as defined in Section 7.08) or Event of Default hereunder unless a Responsible Officer of the Trustee shall have received at the Corporate Trust Office written notice of such default or Event of
Default from the Company or the holders of at least 10% in aggregate principal amount of the Debentures and such notice refers to such default or Event of Default, the Debentures and the Indenture. 
  
 None of the provisions contained in this Indenture shall require the Trustee
to expend or risk its own funds or otherwise incur personal financial liability in the performance of any of its duties or in the exercise of any of its rights or powers, if there is reasonable ground for believing that the repayment of such funds
or adequate indemnity against such risk or liability is not reasonably assured to it. 
  
 Whether or not therein provided, every provision of this Indenture relating to the conduct or affecting the liability of, or affording protection to, the Trustee shall be subject to the provisions of this Section
8.01. 
  

 51 

 Section 8.02. Reliance on Documents, Opinions, Etc. Except as otherwise provided in Section 8.01:

  
 (a) the Trustee may conclusively rely and
shall be protected in acting upon any resolution, certificate, statement, instrument, opinion, report, notice, request, consent, order, bond, debenture, note, coupon or other paper or document (whether in its original or facsimile form) believed by
it in good faith to be genuine and to have been signed or presented by the proper party or parties; 
  
 (b) any request, direction, order or demand of the Company mentioned herein shall be sufficiently evidenced by an Officers’
Certificate and an Opinion of Counsel (unless other evidence in respect thereof be herein specifically prescribed); and any resolution of the Board of Directors may be evidenced to the Trustee by a copy thereof certified by the Secretary or an
Assistant Secretary of the Company; 
  
 (c) the
Trustee may consult with counsel of its own selection and any advice or Opinion of Counsel shall be full and complete authorization and protection in respect of any action taken or omitted by it hereunder in good faith and in accordance with such
advice or Opinion of Counsel; 
  
 (d) the Trustee
shall be under no obligation to exercise any of the rights or powers vested in it by this Indenture at the request, order or direction of any of the Debentureholders pursuant to the provisions of this Indenture, unless such Debentureholders shall
have offered to the Trustee reasonable security or indemnity satisfactory to it against the costs, expenses and liabilities which may be incurred therein or thereby; 
  
 (e) the Trustee shall not be bound to make any investigation into the facts or matters stated in any
resolution, certificate, statement, instrument, opinion, report, notice, request, direction, consent, order, bond, debenture or other paper or document, but the Trustee may make such further inquiry or investigation into such facts or matters as it
may see fit, and, if the Trustee shall determine to make such further inquiry or investigation, it shall be entitled to examine the books, records and premises of the Company, personally or by agent or attorney; 
  
 (f) the Trustee may execute any of the trusts or powers
hereunder or perform any duties hereunder either directly or by or through agents or attorneys and the Trustee shall not be responsible for any misconduct or negligence on the part of any agent or attorney appointed by it with due care hereunder;

  
 (g) the Trustee shall not be liable for any
action taken, suffered or omitted to be taken by it in good faith and reasonably believed by it to be authorized or within the discretion or rights or powers conferred upon it by this Indenture; 
  
 (h) the rights, privileges, protections, immunities and
benefits given to the Trustee, including, without limitation, its right to be indemnified, are extended to, and shall be enforceable by, the Trustee in each of its capacities hereunder, and each agent, custodian and other Person employed to act
hereunder; 
  

 52 

 (i) the Trustee may request that the Company deliver an Officers’ Certificate
setting forth the names of individuals and/or titles of officers authorized at such time to take specified actions pursuant to this Indenture, which Officers’ Certificate may be signed by any person authorized to sign an Officers’
Certificate, including any person specified as so authorized in any such certificate previously delivered and not superseded; and 
  
 (j) whenever in the administration of this Indenture the Trustee shall deem it desirable that a matter be proved or established prior to
taking, suffering or omitting any action hereunder, the Trustee (unless other evidence be herein specifically prescribed) may, in the absence of bad faith on its part, conclusively rely upon an Officers’ Certificate. 
  
 Section 8.03. No Responsibility for Recitals, Etc. The recitals
contained herein and in the Debentures (except in the Trustee’s certificate of authentication) shall be taken as the statements of the Company, and the Trustee assumes no responsibility for the correctness of the same. The Trustee makes no
representations as to the validity or sufficiency of this Indenture or of the Debentures. The Trustee shall not be accountable for the use or application by the Company of any Debentures or the proceeds of any Debentures authenticated and delivered
by the Trustee in conformity with the provisions of this Indenture. 
  
 Section 8.04. Trustee, Paying Agents, Conversion Agents or Registrar May Own Debentures. The Trustee, any Paying Agent, any Conversion Agent or Debenture Registrar, in its individual or any other capacity, may become the owner or
pledgee of Debentures with the same rights it would have if it were not Trustee, Paying Agent, Conversion Agent or Debenture Registrar. 
  
 Section 8.05. Monies to Be Held in Trust. Subject to the provisions of Section 13.03, all monies received by the Trustee shall, until used or
applied as herein provided, be held in trust for the purposes for which they were received. Money held by the Trustee in trust hereunder need not be segregated from other funds except to the extent required by law. The Trustee shall be under no
liability for interest on any money received by it hereunder except as may be agreed in writing from time to time by the Company and the Trustee. 
  
 Section 8.06. Compensation and Expenses of Trustee. The Company covenants and agrees to pay to the Trustee from time to time, and the Trustee shall
be entitled to, such compensation for all services rendered by it hereunder in any capacity (which shall not be limited by any provision of law in regard to the compensation of a trustee of an express trust) as mutually agreed to from time to time
in writing between the Company and the Trustee, and the Company will pay or reimburse the Trustee upon its request for all reasonable expenses, disbursements and advances reasonably incurred or made by the Trustee in accordance with any of the
provisions of this Indenture (including the reasonable compensation and the expenses and disbursements of its counsel and of all Persons not regularly in its employ) except any such expense, disbursement or advance as may arise from its negligence
or willful misconduct. The Company also covenants to indemnify the Trustee and any predecessor Trustee (or any officer, director or employee of the Trustee), in any capacity under this Indenture and its agents and any authenticating agent for, and
to hold them harmless against, any and all loss, liability, damage, 

  

 53 

 
claim or expense including taxes (other than taxes based on the income of the Trustee) incurred without negligence or willful misconduct on the part of the
Trustee or such officers, directors, employees and agent or authenticating agent, as the case may be, and arising out of or in connection with the acceptance or administration of this trust or in any other capacity hereunder, including the costs and
expenses of defending themselves against any claim (whether asserted by the Company, any holder or any other Person) of liability in connection with the exercise or performance of any of its powers or duties hereunder. The obligations of the Company
under this Section 8.06 to compensate or indemnify the Trustee and to pay or reimburse the Trustee for expenses, disbursements and advances shall be secured by a lien prior to that of the Debentures upon all property and funds held or collected by
the Trustee as such, except funds held in trust for the benefit of the holders of particular Debentures. The obligation of the Company under this Section 8.06 shall survive the satisfaction and discharge of this Indenture. 
  
 When the Trustee and its agents and any authenticating agent incur expenses
or render services after an Event of Default specified in Section 7.01(j) or Section 7.01(k) occurs with respect to the Company, the expenses and the compensation for the services are intended to constitute expenses of administration under any
bankruptcy, insolvency or similar laws. 
  
 Section 8.07.
Officers’ Certificate as Evidence. Except as otherwise provided in Section 8.01, whenever in the administration of the provisions of this Indenture the Trustee shall deem it necessary or desirable that a matter be proved or established
prior to taking or omitting any action hereunder, such matter (unless other evidence in respect thereof be herein specifically prescribed) may, in the absence of bad faith or willful misconduct on the part of the Trustee, be deemed to be
conclusively proved and established by an Officers’ Certificate delivered to the Trustee. 
  
 Section 8.08. Conflicting Interests of Trustee. If the Trustee has or shall acquire a conflicting interest within the meaning of the Trust Indenture Act, the Trustee shall either eliminate such interest or
resign, to the extent and in the manner provided by, and subject to the provisions of, the Trust Indenture Act and this Indenture. 
  
 Section 8.09. Eligibility of Trustee. There shall at all times be a Trustee hereunder which shall be a Person that is eligible pursuant to the
Trust Indenture Act to act as such and has a combined capital and surplus of at least $50,000,000 (or if such Person is a member of a bank holding company system, its bank holding company shall have a combined capital and surplus of at least
$50,000,000). If such Person publishes reports of condition at least annually, pursuant to law or to the requirements of any supervising or examining authority, then for the purposes of this Section 8.09 the combined capital and surplus of such
Person shall be deemed to be its combined capital and surplus as set forth in its most recent report of condition so published. If at any time the Trustee shall cease to be eligible in accordance with the provisions of this Section 8.09, it shall
resign immediately in the manner and with the effect hereinafter specified in this Article 8. 
  
 Section 8.10. Resignation or Removal of Trustee. (a) The Trustee may at any time resign by giving written notice of such resignation to the Company and to the holders of Debentures. Upon receiving such notice
of resignation, the Company shall promptly appoint a successor trustee by written instrument, in duplicate, executed by order of the Board of 

  

 54 

 
Directors, one copy of which instrument shall be delivered to the resigning Trustee and one copy to the successor trustee. If no successor trustee shall have
been so appointed and have accepted appointment sixty (60) days after the mailing of such notice of resignation to the Debentureholders, the resigning Trustee may, upon ten (10) Business Days’ notice to the Company and the Debentureholders, may
petition, at the expense of the Company, any court of competent jurisdiction for the appointment of a successor trustee, or, if any Debentureholder who has been a bona fide holder of a Debenture or Debentures for at least six months may, subject to
the provisions of Section 7.09, on behalf of himself and all others similarly situated, petition any such court for the appointment of a successor trustee. Such court may thereupon, after such notice, if any, as it may deem proper and prescribe,
appoint a successor trustee. 
  
 (b) In case at any time any of
the following shall occur: 
  
 (i) the Trustee
shall fail to comply with Section 8.08 after written request therefor by the Company or by any Debentureholder who has been a bona fide holder of a Debenture or Debentures for at least six months; or 
  
 (ii) the Trustee shall cease to be eligible in accordance
with the provisions of Section 8.09 and shall fail to resign after written request therefor by the Company or by any such Debentureholder; or 
  
 (iii) the Trustee shall become incapable of acting, or shall be adjudged bankrupt or insolvent, or a receiver of the Trustee or of its
property shall be appointed, or any public officer shall take charge or control of the Trustee or of its property or affairs for the purpose of rehabilitation, conservation or liquidation, 
  
 then, in any such case, the Company may remove the Trustee and appoint a successor trustee by
written instrument, in duplicate, executed by order of the Board of Directors, one copy of which instrument shall be delivered to the Trustee so removed and one copy to the successor trustee, or, subject to the provisions of Section 7.09, any
Debentureholder who has been a bona fide holder of a Debenture or Debentures for at least six months may, on behalf of himself and all others similarly situated, petition any court of competent jurisdiction for the removal of the Trustee and the
appointment of a successor trustee; provided that if no successor Trustee shall have been appointed and have accepted appointment sixty (60) days after either the Company or the Debentureholders has removed the Trustee, or the Trustee
resigns, the Trustee so removed may petition, at the expense of the Company, any court of competent jurisdiction for an appointment of a successor trustee. Such court may thereupon, after such notice, if any, as it may deem proper and prescribe,
remove the Trustee and appoint a successor trustee. 
  
 (c) The
holders of a majority in aggregate principal amount of the Debentures at the time outstanding may at any time remove the Trustee and nominate a successor trustee which shall be deemed appointed as successor trustee unless, within ten (10) days after
notice to the Company of such nomination, the Company objects thereto, in which case the Trustee so removed or any Debentureholder, or if such Trustee so removed or any Debentureholder fails to act, the Company, upon the terms and conditions and
otherwise as in Section 8.10(a) provided, may petition any court of competent jurisdiction for an appointment of a successor trustee. 
  

 55 

 (d) Any resignation or removal of the Trustee and appointment of a successor trustee pursuant to any of
the provisions of this Section 8.10 shall become effective upon acceptance of appointment by the successor trustee as provided in Section 8.11. 
  
 Section 8.11. Acceptance by Successor Trustee. Any successor trustee appointed as provided in Section 8.10 shall execute, acknowledge and deliver
to the Company and to its predecessor trustee an instrument accepting such appointment hereunder, and thereupon the resignation or removal of the predecessor trustee shall become effective and such successor trustee, without any further act, deed or
conveyance, shall become vested with all the rights, powers, duties and obligations of its predecessor hereunder, with like effect as if originally named as trustee herein; but, nevertheless, on the written request of the Company or of the successor
trustee, the trustee ceasing to act shall, upon payment of any amount then due it pursuant to the provisions of Section 8.06, execute and deliver an instrument transferring to such successor trustee all the rights and powers of the trustee so
ceasing to act. Upon request of any such successor trustee, the Company shall execute any and all instruments in writing for more fully and certainly vesting in and confirming to such successor trustee all such rights and powers. Any trustee ceasing
to act shall, nevertheless, retain a lien upon all property and funds held or collected by such trustee as such, except for funds held in trust for the benefit of holders of particular Debentures, to secure any amounts then due it pursuant to the
provisions of Section 8.06. 
  
 No successor trustee shall accept
appointment as provided in this Section 8.11 unless, at the time of such acceptance, such successor trustee shall be qualified under the provisions of Section 8.08 and be eligible under the provisions of Section 8.09. 
  
 Upon acceptance of appointment by a successor trustee as provided in this
Section 8.11, the Company (or the former trustee, at the written direction of the Company) shall mail or cause to be mailed notice of the succession of such trustee hereunder to the holders of Debentures at their addresses as they shall appear on
the Debenture Register. If the Company fails to mail such notice within ten (10) days after acceptance of appointment by the successor trustee, the successor trustee shall cause such notice to be mailed at the expense of the Company. 
  
 Section 8.12. Succession by Merger . Any Person into which the Trustee
may be merged or converted or with which it may be consolidated, or any Person resulting from any merger, conversion or consolidation to which the Trustee shall be a party, or any Person succeeding to all or substantially all of the corporate trust
business of the Trustee (including any trust created by this Indenture), shall be the successor to the Trustee hereunder without the execution or filing of any paper or any further act on the part of any of the parties hereto; provided that,
in the case of any Person succeeding to all or substantially all of the corporate trust business of the Trustee, such Person shall be qualified under the provisions of Section 8.08 and eligible under the provisions of Section 8.09. 
  
 In case at the time such successor to the Trustee shall succeed to the trusts
created by this Indenture, any of the Debentures shall have been authenticated but not delivered, any such successor to the Trustee may adopt the certificate of authentication of any predecessor trustee or authenticating agent appointed by such
predecessor trustee, and deliver such Debentures so authenticated; and in case at that time any of the Debentures shall not have been authenticated, 

  

 56 

 
any successor to the Trustee or any authenticating agent appointed by such successor trustee may authenticate such Debentures in the name of the successor
trustee; and in all such cases such certificates shall have the full force that is provided in the Debentures or in this Indenture; provided that the right to adopt the certificate of authentication of any predecessor Trustee or authenticate
Debentures in the name of any predecessor Trustee shall apply only to its successor or successors by merger, conversion or consolidation. 
  
 Section 8.13. Preferential Collection of Claims. If and when the Trustee shall be or become a creditor of the Company (or any other obligor upon
the Debentures), the Trustee shall be subject to the provisions of the Trust Indenture Act regarding the collection of the claims against the Company (or any such other obligor). 
  
 ARTICLE 9 
 THE DEBENTUREHOLDERS 
  
 Section 9.01. Action by Debentureholders . Whenever in this Indenture it is provided that the holders of a specified percentage in aggregate principal amount of the Debentures may take any action (including the making of any demand
or request, the giving of any notice, consent or waiver or the taking of any other action), the fact that at the time of taking any such action, the holders of such specified percentage have joined therein may be evidenced (a) by any instrument or
any number of instruments of similar tenor executed by Debentureholders in person or by agent or proxy appointed in writing, or (b) by the record of the holders of Debentures voting in favor thereof at any meeting of Debentureholders duly called and
held in accordance with the provisions of Article 10, or (c) by a combination of such instrument or instruments and any such record of such a meeting of Debentureholders. Whenever the Company or the Trustee solicits the taking of any action by the
holders of the Debentures, the Company or the Trustee may fix in advance of such solicitation, a date as the record date for determining holders entitled to take such action. The record date shall he not more than fifteen (15) days prior to the date
of commencement solicitation of such action. 
  
 Section 9.02.
Proof of Execution by Debentureholders . Subject to the provisions of Section 8.01, 8.02 and 10.05, proof of the execution of any instrument by a Debentureholder or its agent or proxy shall be sufficient if made in accordance with such
reasonable rules and regulations as may be prescribed by the Trustee or in such manner as shall be satisfactory to the Trustee. The holding of Debentures shall be proved by the registry of such Debentures or by a certificate of the Debenture
Registrar. 
  
 The record of any Debentureholders’ meeting
shall be proved in the manner provided in Section 10.06. 
  
 Section 9.03. Who Are Deemed Absolute Owners. The Company, the Trustee, any Paying Agent, any Conversion Agent and any Debenture Registrar may deem the Person in whose name such Debenture shall be registered upon the Debenture
Register to be, and may treat it as, the absolute owner of such Debenture (whether or not such Debenture shall be overdue and notwithstanding any notation of ownership or other writing thereon made by any Person other than the Company or any
Debenture Registrar) for the purpose of receiving payment of or on account of the principal of and interest on such Debenture, for conversion of such Debenture and 

  

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for all other purposes; and neither the Company nor the Trustee nor any Paying Agent nor any Conversion Agent nor any Debenture Registrar shall be affected
by any notice to the contrary. All such payments so made to any holder for the time being, or upon his order, shall be valid, and, to the extent of the sum or sums so paid, effectual to satisfy and discharge the liability for monies payable upon any
such Debenture. 
  
 Section 9.04. Company-owned Debentures
Disregarded. In determining whether the holders of the requisite aggregate principal amount of Debentures have concurred in any direction, consent, waiver or other action under this Indenture, Debentures which are owned by the Company or any
other obligor on the Debentures or any Affiliate of the Company or any other obligor on the Debentures shall be disregarded and deemed not to be outstanding for the purpose of any such determination; provided that for the purposes of
determining whether the Trustee shall be protected in relying on any such direction, consent, waiver or other action, only Debentures which a Responsible Officer knows are so owned shall be so disregarded. Debentures so owned which have been pledged
in good faith may be regarded as outstanding for the purposes of this Section 9.04 if the pledgee shall establish to the satisfaction of the Trustee the pledgee’s right to vote such Debentures and that the pledgee is not the Company, any other
obligor on the Debentures or any Affiliate of the Company or any such other obligor. In the case of a dispute as to such right, any decision by the Trustee taken upon the advice of counsel shall fully protect the Trustee. Upon request of the
Trustee, the Company shall furnish to the Trustee promptly an Officers’ Certificate listing and identifying all Debentures, if any, known by the Company to be owned or held by or for the account of any of the above described Persons, and,
subject to Section 8.01, the Trustee shall be entitled to accept such Officers’ Certificate as conclusive evidence of the facts therein set forth and of the fact that all Debentures listed therein are outstanding for the purpose of any such
determination. 
  
 Section 9.05. Revocation of Consents, Future
Holders Bound. At any time prior to (but not after) the evidencing to the Trustee, as provided in Section 9.01, of the taking of any action by the holders of the percentage in aggregate principal amount of the Debentures specified in this
Indenture in connection with such action, any holder of a Debenture which is shown by the evidence to be included in the Debentures the holders of which have consented to such action may, by filing written notice with the Trustee at its Corporate
Trust Office and upon proof of holding as provided in Section 9.02, revoke such action so far as concerns such Debenture. Except as aforesaid, any such action taken by the holder of any Debenture shall be conclusive and binding upon such holder and
upon all future holders and owners of such Debenture and of any Debentures issued in exchange or substitution therefor, irrespective of whether any notation in regard thereto is made upon such Debenture or any Debenture issued in exchange or
substitution therefor. 
  

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 ARTICLE 10 
 MEETINGS OF DEBENTUREHOLDERS 
  
 Section 10.01. Purpose of Meetings. A meeting of Debentureholders may be called at any time and from time to time pursuant to the provisions of
this Article 10 for any of the following purposes: 
  
 (1) to give any notice to the Company or to the Trustee or to give any directions to the Trustee permitted under this Indenture, or to consent to the waiving of any default or Event of Default hereunder and its consequences, or to take any
other action authorized to be taken by Debentureholders pursuant to any of the provisions of Article 7; 
  
 (2) to remove the Trustee and nominate a successor trustee pursuant to the provisions of Article 8; 
  
 (3) to consent to the execution of an indenture or
indentures supplemental hereto pursuant to the provisions of Section 11.02; or 
  
 (4) to take any other action authorized to be taken by or on behalf of the holders of any specified aggregate principal amount of the
Debentures under any other provision of this Indenture or under applicable law. 
  
 Section 10.02. Call of Meetings by Trustee. The Trustee may at any time call a meeting of Debentureholders to take any action specified in this Section 10.02, to be held at such time and at such place as the
Trustee shall determine. Notice of every meeting of the Debentureholders, setting forth the time and the place of such meeting and in general terms the action proposed to be taken at such meeting and the establishment of any record date pursuant to
Section 9.01, shall be mailed to holders of Debentures at their addresses as they shall appear on the Debenture Register. Such notice shall also be mailed to the Company. Such notices shall be mailed not less than twenty (20) nor more than ninety
(90) days prior to the date fixed for the meeting. 
  
 Any meeting
of Debentureholders shall be valid without notice if the holders of all Debentures then outstanding are present in person or by proxy or if notice is waived before or after the meeting by the holders of all Debentures outstanding, and if the Company
and the Trustee are either present by duly authorized representatives or have, before or after the meeting, waived notice. 
  
 Section 10.03. Call of Meetings by Company or Debentureholders. In case at any time the Company, pursuant to a resolution of its Board of
Directors, or the holders of at least 10% in aggregate principal amount of the Debentures then outstanding, shall have requested the Trustee to call a meeting of Debentureholders, by written request setting forth in reasonable detail the action
proposed to be taken at the meeting, and the Trustee shall not have mailed the notice of such meeting within twenty (20) days after receipt of such request, then the Company or such Debentureholders may determine the time and the place for such
meeting and may call such meeting to take any action authorized in Section 10.01, by mailing notice thereof as provided in Section 10.02. 
  

 59 

 Section 10.04. Qualifications for Voting. To be entitled to vote at any meeting of
Debentureholders a person shall (a) be a holder of one or more Debentures on the record date pertaining to such meeting or (b) be a person appointed by an instrument in writing as proxy by a holder of one or more Debentures on the record date
pertaining to such meeting. The only persons who shall be entitled to be present or to speak at any meeting of Debentureholders shall be the persons entitled to vote at such meeting and their counsel and any representatives of the Trustee and its
counsel and any representatives of the Company and its counsel. 
  
 Section 10.05. Regulations. Notwithstanding any other provisions of this Indenture, the Trustee may make such reasonable regulations as it may deem advisable for any meeting of Debentureholders, in regard to proof of the holding of
Debentures and of the appointment of proxies, and in regard to the appointment and duties of inspectors of votes, the submission and examination of proxies, certificates and other evidence of the right to vote, and such other matters concerning the
conduct of the meeting as it shall think fit. 
  
 The Trustee
shall, by an instrument in writing, appoint a temporary chairman of the meeting, unless the meeting shall have been called by the Company or by Debentureholders as provided in Section 10.03, in which case the Company or the Debentureholders calling
the meeting, as the case may be, shall in like manner appoint a temporary chairman. A permanent chairman and a permanent secretary of the meeting shall be elected by vote of the holders of a majority in principal amount of the Debentures represented
at the meeting and entitled to vote at the meeting. 
  
 Subject to
the provisions of Section 9.04, at any meeting each Debentureholder or proxyholder shall be entitled to one vote for each $1,000 principal amount of Debentures held or represented by him; provided that no vote shall be cast or counted at any
meeting in respect of any Debenture challenged as not outstanding and ruled by the chairman of the meeting to be not outstanding. The chairman of the meeting shall have no right to vote other than by virtue of Debentures held by him or instruments
in writing as aforesaid duly designating him as the proxy to vote on behalf of other Debentureholders. Any meeting of Debentureholders duly called pursuant to the provisions of Section 10.02 or 10.03 may be adjourned from time to time by the holders
of a majority of the aggregate principal amount of Debentures represented at the meeting, whether or not constituting a quorum, and the meeting may be held as so adjourned without further notice. 
  
 Section 10.06. Voting. The vote upon any resolution submitted to any
meeting of Debentureholders shall be by written ballot on which shall be subscribed the signatures of the holders of Debentures or of their representatives by proxy and the outstanding principal amount of the Debentures held or represented by them.
The permanent chairman of the meeting shall appoint two inspectors of votes who shall count all votes cast at the meeting for or against any resolution and who shall make and file with the secretary of the meeting their verified written reports in
duplicate of all votes cast at the meeting. A record in duplicate of the proceedings of each meeting of Debentureholders shall be prepared by the secretary of the meeting and there shall be attached to said record the original reports of the
inspectors of votes on any vote by ballot taken thereat and affidavits by one or more persons having knowledge of the facts setting forth a copy of the notice of the meeting and showing that said notice was mailed as provided in Section 10.02. The
record shall show the principal amount of the Debentures voting in favor of 

  

 60 

 
or against any resolution. The record shall be signed and verified by the affidavits of the permanent chairman and secretary of the meeting and one of the
duplicates shall be delivered to the Company and the other to the Trustee to be preserved by the Trustee, the latter to have attached thereto the ballots voted at the meeting. 
  
 Any record so signed and verified shall be conclusive evidence of the matters therein stated. 
  
 Section 10.07. No Delay of Rights by Meeting. Nothing contained in
this Article 10 shall be deemed or construed to authorize or permit, by reason of any call of a meeting of Debentureholders or any rights expressly or impliedly conferred hereunder to make such call, any hindrance or delay in the exercise of any
right or rights conferred upon or reserved to the Trustee or to the Debentureholders under any of the provisions of this Indenture or of the Debentures. 
  
 ARTICLE 11 
 SUPPLEMENTAL
INDENTURES 
  
 Section 11.01. Supplemental
Indentures Without Consent of Debentureholders. The Company, when authorized by the resolutions of the Board of Directors, and the Trustee may, from time to time, and at any time enter into an indenture or indentures supplemental hereto for one
or more of the following purposes: 
  
 (a) make
provision with respect to the conversion rights of the holders of Debentures pursuant to the requirements of Section 15.06 or the repurchase obligations of the Company pursuant to the requirements of Section 3.08(h); 
  
 (b) to convey, transfer, assign, mortgage or pledge to the
Trustee as security for the Debentures, any property or assets; 
  
 (c) to add a guarantor with respect to the Debentures; 
  
 (d) to evidence the succession of another Person to the Company, or successive successions, and the assumption by the successor Person of
the covenants, agreements and obligations of the Company pursuant to Article 12; 
  
 (e) to surrender any of the Company’s rights or powers under the Indenture; 
  
 (f) to add to the covenants of the Company such further
covenants, restrictions or conditions for the benefit of the holders of Debentures, and to make the occurrence, or the occurrence and continuance, of a default in any such additional covenants, restrictions or conditions a default or an Event of
Default permitting the enforcement of all or any of the several remedies provided in this Indenture as herein set forth; provided that in respect of any such additional covenant, restriction or condition, such supplemental indenture may
provide for a particular period of grace after default (which period may be shorter or longer than that allowed in the case of other defaults) or may provide for an immediate enforcement upon such default or may limit the remedies available to the
Trustee upon such default; 
  

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 (g) to make any changes or modifications necessary in connection with the registration of
the Debentures under the Securities Act as contemplated by the Registration Rights Agreement, so long as any such change or modification shall not materially adversely affect the interests of the holders of the Debentures; 
  
 (h) to provide for the issuance under this Indenture of
Debentures in coupon form (including Debentures registrable as to principal only) and to provide for exchangeability of such Debentures with the Debentures issued hereunder in fully registered form and to make all appropriate changes for such
purpose; 
  
 (i) to cure any ambiguity or to
correct or supplement any provision contained herein or in any supplemental indenture that may be defective or inconsistent with any other provisions contained herein or in any supplemental indenture, or to make such other provision in regard to
matters or questions arising under this Indenture that shall not materially adversely affect the interests of the holders of the Debentures; 
  
 (j) to evidence and provide for the acceptance of appointment hereunder by a successor Trustee with respect to the Debentures; 

 
 (k) to modify, eliminate or add to the provisions of this
Indenture to such extent as shall be necessary to effect the qualifications of this Indenture or any supplemental indenture under the Trust Indenture Act, or under any similar federal statute hereafter enacted; or 
  
 (l) make other changes to the Indenture or forms or terms of
the Debentures, provided no such change individually or in the aggregate with all other such changes has or will have a material adverse effect on the interests of the Debentureholders. 
  
 Upon the written request of the Company, accompanied by a copy of the resolutions of the Board of Directors certified by the
Company’s Secretary or Assistant Secretary authorizing the execution of any supplemental indenture, the Trustee is hereby authorized to join with the Company in the execution of any such supplemental indenture, to make any further appropriate
agreements and stipulations that may be therein contained and to accept the conveyance, transfer and assignment of any property thereunder, but the Trustee shall not be obligated to, but may in its discretion, enter into any supplemental indenture
that affects the Trustee’s own rights, duties or immunities under this Indenture or otherwise. 
  
 Any supplemental indenture authorized by the provisions of this Section 11.01 may be executed by the Company and the Trustee without the consent of the
holders of any of the Debentures at the time outstanding, notwithstanding any of the provisions of Section 11.02. 
  
 Notwithstanding any other provision of the Indenture or the Debentures, the Registration Rights Agreement and the obligation to pay Additional Amounts
thereunder may be amended, modified or waived in accordance with the provisions of the Registration Rights Agreement. 
  
 Section 11.02. Supplemental Indenture with Consent of Debentureholders. With the consent (evidenced as provided in Article 9) of the holders of at
least a majority in aggregate principal amount of the Debentures at the time outstanding, the Company, when authorized by 

  

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the resolutions of the Board of Directors, and the Trustee may, from time to time and at any time, enter into an indenture or indentures supplemental hereto
for the purpose of adding any provisions to or changing in any manner or eliminating any of the provisions of this Indenture or any supplemental indenture or of modifying in any manner the rights of the holders of the Debentures; provided
that no such supplemental indenture shall (i) extend the Stated Maturity of any Debenture, or reduce the rate or extend the time of payment of interest thereon, or reduce the principal amount thereof, or reduce any amount payable on redemption or
repurchase thereof, or impair the right of any Debentureholder to institute suit for the payment thereof, or make the principal thereof or interest thereon payable in any coin or currency other than that provided in the Debentures, or affect the
obligation of the Company to redeem any Debenture on a Redemption Date in a manner adverse to the holders of Debentures, or affect the obligation of the Company to repurchase any Debenture upon the happening of a Fundamental Change in a manner
adverse to the holders of Debentures, or affect the obligation of the Company to repurchase any Debenture on a Company Repurchase Date in a manner adverse to the holders of Debentures, or impair the right to convert the Debentures into shares of
Common Stock subject to the terms set forth herein, including Section 15.06, or reduce the number of shares of Common Stock or other property receivable upon conversion, in each case, without the consent of the holder of each Debenture so affected,
or modify any of the provisions of this Section 11.02 or Section 7.07, except to increase any such percentage or to provide that certain other provisions of this Indenture cannot be modified or waived without the consent of the holder of each
Debenture so affected, or change any obligation of the Company to maintain an office or agency in the places and for the purposes set forth in Section 5.02, or reduce the quorum or voting requirements set forth in Article 10 or (ii) reduce the
aforesaid percentage of Debentures, the holders of which are required to consent to any such supplemental indenture, without the consent of the holders of all Debentures then outstanding. 
  
 Upon the written request of the Company, accompanied by a copy of the resolutions of the Board of Directors certified by its
Secretary or Assistant Secretary authorizing the execution of any such supplemental indenture, and upon the filing with the Trustee of evidence of the consent of Debentureholders as aforesaid, the Trustee shall join with the Company in the execution
of such supplemental indenture unless such supplemental indenture affects the Trustee’s own rights, duties or immunities under this Indenture or otherwise, in which case the Trustee may in its discretion, but shall not be obligated to, enter
into such supplemental indenture. 
  
 It shall not be necessary
for the consent of the Debentureholders under this Section 11.02 to approve the particular form of any proposed supplemental indenture, but it shall be sufficient if such consent shall approve the substance thereof. 
  
 Section 11.03. Effect of Supplemental Indenture. Any supplemental
indenture executed pursuant to the provisions of this Article 11 shall comply with the Trust Indenture Act, as then in effect, provided that this Section 11.03 shall not require such supplemental indenture or the Trustee to be qualified under
the Trust Indenture Act prior to the time such qualification is in fact required under the terms of the Trust Indenture Act or the Indenture has been qualified under the Trust Indenture Act, nor shall it constitute any admission or acknowledgment by
any party to such supplemental indenture that any such qualification is required prior to the time such qualification is in fact required under the terms of the Trust Indenture Act or the Indenture has 

  

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been qualified under the Trust Indenture Act. Upon the execution of any supplemental indenture pursuant to the provisions of Article 11, this Indenture shall
be and shall be deemed to be modified and amended in accordance therewith and the respective rights, limitation of rights, obligations, duties and immunities under this Indenture of the Trustee, the Company and the holders of Debentures shall
thereafter be determined, exercised and enforced hereunder, subject in all respects to such modifications and amendments and all the terms and conditions of any such supplemental indenture shall be and shall be deemed to be part of the terms and
conditions of this Indenture for any and all purposes. 
  
 Section
11.04. Notation on Debentures. Debentures authenticated and delivered after the execution of any supplemental indenture pursuant to the provisions of this Article 11 may bear a notation in form approved by the Trustee as to any matter provided for
in such supplemental indenture. If the Company or the Trustee shall so determine, new Debentures so modified as to conform, in the opinion of the Trustee and the Board of Directors, to any modification of this Indenture contained in any such
supplemental indenture may, at the Company’s expense, be prepared and executed by the Company, authenticated by the Trustee (or an authenticating agent duly appointed by the Trustee pursuant to Section 16.13) and delivered in exchange for the
Debentures then outstanding, upon surrender of such Debentures then outstanding. 
  
 Section 11.05. Evidence of Compliance of Supplemental Indenture to Be Furnished to Trustee. Prior to entering into any supplemental indenture, the Trustee shall be provided with an Officers’ Certificate
and an Opinion of Counsel as conclusive evidence that any supplemental indenture executed pursuant hereto complies with the requirements of this Article 11 and is otherwise authorized or permitted by this Indenture. 
  
 ARTICLE 12 
 CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE 
  
 Section 12.01. Company May Consolidate on Certain Terms. Subject to
the provisions of Section 12.02, the Company shall not consolidate or merge with or into any other Person or Persons (whether or not affiliated with the Company), nor shall the Company or its successor or successors be a party or parties to
successive consolidations or mergers, nor shall the Company sell, convey, transfer or lease the property and assets of the Company substantially as an entirety, to any other Person (whether or not affiliated with the Company), unless: (i) the
Company is the surviving Person, or the resulting, surviving or transferee Person is a corporation organized and existing under the laws of the United States of America, any state thereof or the District of Columbia; (ii) upon any such
consolidation, merger, sale, conveyance, transfer or lease, the due and punctual payment of the principal of and interest on all of the Debentures, according to their tenor and the due and punctual performance and observance of all of the covenants
and conditions of this Indenture to be performed by the Company, shall be expressly assumed, by supplemental indenture satisfactory in form to the Trustee, executed and delivered to the Trustee by the Person (if other than the Company) formed by
such consolidation, or into which the Company shall have been merged, or by the Person that shall have acquired or leased such property, and such supplemental indenture shall provide for the applicable conversion rights set forth in Section 15.06;
and (iii) immediately after giving effect to the transaction described above, no Event of Default, and no event which, after notice or lapse of time or both, would become an Event of Default, shall have occurred and be continuing. 
  

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 Section 12.02. Successor to Be Substituted. In case of any such consolidation, merger, sale,
conveyance, transfer or lease and upon the assumption by the successor Person, by supplemental indenture, executed and delivered to the Trustee and satisfactory in form to the Trustee, of the due and punctual payment of the principal of and interest
on all of the Debentures and the due and punctual performance of all of the covenants and conditions of this Indenture to be performed by the Company, such successor Person shall succeed to and be substituted for the Company, with the same effect as
if it had been named herein as the party of this first part. Such successor Person thereupon may cause to be signed, and may issue either in its own name or in the name of Navigant International, Inc. any or all of the Debentures, issuable hereunder
that theretofore shall not have been signed by the Company and delivered to the Trustee; and, upon the order of such successor Person instead of the Company and subject to all the terms, conditions and limitations in this Indenture prescribed, the
Trustee shall authenticate and shall deliver, or cause to be authenticated and delivered, any Debentures that previously shall have been signed and delivered by the officers of the Company to the Trustee for authentication, and any Debentures that
such successor Person thereafter shall cause to be signed and delivered to the Trustee for that purpose. All the Debentures so issued shall in all respects have the same legal rank and benefit under this Indenture as the Debentures theretofore or
thereafter issued in accordance with the terms of this Indenture as though all of such Debentures had been issued at the date of the execution hereof. In the event of any such consolidation, merger, sale, conveyance, transfer or lease, the Person
named as the “Company” in the first paragraph of this Indenture or any successor that shall thereafter have become such in the manner prescribed in this Article 12 may be dissolved, wound up and liquidated at any time thereafter and
such Person shall be released from its liabilities as obligor and maker of the Debentures and from its obligations under this Indenture. 
  
 In case of any such consolidation, merger, sale, conveyance, transfer or lease, such changes in phraseology and form (but not in substance) may be made in
the Debentures thereafter to be issued as may be appropriate. 
  
 Section 12.03. Opinion of Counsel to Be Given Trustee. The Trustee shall receive an Officers’ Certificate and an Opinion of Counsel as conclusive evidence that any such consolidation, merger, sale, conveyance, transfer or lease
and any such assumption complies with the provisions of this Article 12. 
  
 ARTICLE 13 
 SATISFACTION AND DISCHARGE OF INDENTURE

  
 Section 13.01. Discharge of Indenture. When (a) the
Company shall deliver to the Trustee for cancellation all Debentures theretofore authenticated (other than any Debentures that have been destroyed, lost or stolen and in lieu of or in substitution for which other Debentures shall have been
authenticated and delivered) and not theretofore canceled, or (b) all the Debentures not theretofore canceled or delivered to the Trustee for cancellation shall have become due and payable and the Company shall deposit with the Trustee, in trust,
cash or, if expressly permitted by the terms of the Debentures or the Indenture, Common Stock sufficient to discharge the entire indebtedness on the Debentures (other than any Debentures that shall have been mutilated, destroyed, lost or stolen and
in lieu of or in substitution for which other Debentures shall have been authenticated and delivered) not theretofore canceled or delivered to 

  

 65 

 
the Trustee for cancellation, accompanied by a verification report, as to the sufficiency of the deposited amount, from an independent certified accountant
or other financial professional satisfactory to the Trustee, and if in either case the Company shall also pay or cause to be paid all other sums payable hereunder by the Company, then this Indenture shall cease to be of further effect (except as to
(i) remaining rights of registration of transfer, substitution and exchange and conversion of Debentures, (ii) rights hereunder of Debentureholders to receive payments of principal of and interest on the Debentures and the other rights, duties and
obligations of Debentureholders, as beneficiaries hereof with respect to the amounts, if any, so deposited with the Trustee and (iii) the rights, powers, duties, obligations and immunities of the Trustee hereunder), and the Trustee, on written
demand of the Company accompanied by an Officers’ Certificate and an Opinion of Counsel as required by Section 16.06 and at the cost and expense of the Company, shall execute proper instruments acknowledging satisfaction of and discharging this
Indenture; the Company, however, hereby agrees to reimburse the Trustee for any costs or expenses thereafter reasonably and properly incurred by the Trustee and to compensate the Trustee for any services thereafter reasonably and properly rendered
by the Trustee in connection with this Indenture or the Debentures. 
  
 Section 13.02. Paying Agent to Repay Monies Held. Upon the satisfaction and discharge of this Indenture, all monies then held by any Paying Agent of the Debentures (other than the Trustee) shall, upon written request of the Company,
be repaid to it or paid to the Trustee, and thereupon such Paying Agent shall be released from all further liability with respect to such monies. 
  
 Section 13.03. Return of Unclaimed Monies. Subject to the requirements of applicable law, any monies deposited with or paid to the Trustee for
payment of the principal of or interest on Debentures and not applied but remaining unclaimed by the holders of Debentures for two years after the date upon which the principal of or interest on such Debentures, as the case may be, shall have become
due and payable, shall be repaid to the Company by the Trustee on demand and all liability of the Trustee shall thereupon cease with respect to such monies; and the holder of any of the Debentures shall thereafter look only to the Company for any
payment that such holder may be entitled to collect unless an applicable abandoned property law designates another Person. 
  
 ARTICLE 14 
 IMMUNITY
OF INCORPORATORS, STOCKHOLDERS, OFFICERS AND DIRECTORS 
  
 Section 14.01. Indenture and Debentures Solely Corporate Obligations. No recourse for the payment of the principal of or interest on any Debenture,
or for any claim based thereon or otherwise in respect thereof, and no recourse under or upon any obligation, covenant or agreement of the Company in this Indenture or in any supplemental indenture or in any Debenture, or because of the creation of
any indebtedness represented thereby, shall be had against any incorporator, stockholder, employee, agent, officer, director or subsidiary, as such, past, present or future, of the Company or of any successor corporation, either directly or through
the Company or any successor corporation, whether by virtue of any constitution, statute or rule of law, or by the enforcement of any assessment or penalty or otherwise; it being expressly understood that all such liability is hereby expressly
waived and released as a condition of, and as a consideration for, the execution of this Indenture and the issue of the Debentures. 
  

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 ARTICLE 15 
 CONVERSION OF DEBENTURES 
  
 Section 15.01. Right to Convert. (a) Subject to and upon compliance with the provisions of this Indenture, prior to November 1, 2023, the holder of
any Debenture shall have the right, at such holder’s option, to convert the principal amount of the Debenture, or any portion of such principal amount which is a multiple of $1,000, into fully paid and non-assessable shares of Common Stock (as
such shares shall then be constituted) at the Conversion Rate in effect at such time, by surrender of the Debenture so to be converted in whole or in part, together with any required funds, under the circumstances described in this Section 15.01 and
in the manner provided in Section 15.02. The Debentures shall be convertible only during the following periods upon the occurrence of one of the following events: 
  
 (i) during any fiscal quarter after the fiscal quarter ending December 28, 2003 if the Last Reported Sale
Price of the Common Stock for at least twenty (20) Trading Days during the period of thirty (30) consecutive Trading Days ending on the first Trading Day of such fiscal quarter equals or exceeds 120% of the Conversion Price on such first Trading
Day; 
  
 (ii) in the event that the Company calls
the Debentures for redemption, at any time prior to the close of business on the second Business Day immediately preceding the Redemption Date; provided that only those Debentures that are called for redemption may be converted following such
an event; 
  
 (iii) as provided in Section (b) of
this Section 15.01; or 
  
 (iv) during the five
(5) Business Day period immediately after any five (5) consecutive Trading Day period in which the Trading Price per $1,000 principal amount of the Debentures for each day of such five (5) day measurement period was less than 98% of the product of
the Last Reported Sale Price of the Common Stock on the applicable date and the Conversion Rate. 
  
 Notwithstanding the foregoing, if, on the date of any conversion pursuant to Section 15.01(a)(iv) on or after November 1, 2018, the Last Reported Sale
Price of the Common Stock is greater than 100% but less than 120% of the Conversion Price, the holders of Debentures surrendered for conversion shall receive, in lieu of Common Stock based on the Conversion Rate, cash or Common Stock or a
combination of cash and Common Stock, at the Company’s option, with a value equal to the principal amount of the Debentures being converted plus accrued and unpaid interest (including Additional Amounts, if any), as of the Conversion Date
(“Principal Value Conversion”). Any Common Stock delivered upon a Principal Value Conversion will be valued at the greater of the Conversion Price on the Conversion Date and the average of the Last Reported Sale Price of the Common
Stock for a five (5) Trading Day period starting the third (3rd) Trading Day following the Conversion Date of such
Debentures. If a holder of Debentures surrenders their Debentures for a Principal Value Conversion, the Company shall notify such holder by the second Trading Day following the Conversion Date that it is a Principal Value Conversion and whether the
Company will pay such holder all or a portion of the principal amount plus accrued and unpaid interest and Additional Amounts, if any, in cash, 

  

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Common Stock or a combination of cash and Common Stock, and the percentage or amount of each. The Company will pay such holder any portion of the principal
amount plus accrued and unpaid interest and Additional Amounts, if any, to be paid in cash and deliver Common Stock with respect to any portion of the principal amount plus accrued and unpaid interest and Additional Amounts, if any, to be paid in
Common Stock, no later than the third Business Day following the determination of the average Last Reported Sale Price of the Common Stock. 
  
 The Company or its designated agent shall determine on a daily basis during the time period specified in Section 15.01(a)(i) whether the Debentures shall
be convertible as a result of the occurrence of an event specified in clause (i) above and, if the Debentures shall be so convertible, the Company shall promptly deliver to the Trustee (or other Conversion Agent appointed by the Company) written
notice thereof. Whenever the Debentures shall become convertible pursuant to this Section 15.01, the Company or, at the Company’s request, the Trustee in the name and at the expense of the Company, shall notify the holders of the event
triggering such convertibility in the manner provided in Section 16.04, and the Company shall also publicly announce such information by publication on the Company’s web site or through such other public medium as it may use at such time. Any
notice so given shall be conclusively presumed to have been duly given, whether or not the holder receives such notice. 
  
 The Trustee (or other Conversion Agent appointed by the Company) shall have no obligation to determine the Trading Price under this Section 15.01 unless
the Company has requested in writing such a determination; and the Company shall have no obligation to make such request unless a holder provides it with reasonable evidence that the Trading Price per $1,000 principal amount of Debentures would be
less than 98% of the product of the Last Reported Sale Price of the Common Stock and the Conversion Rate. If such evidence is provided, the Company shall instruct the Trustee (or other Conversion Agent) in writing to determine the Trading Price of
the Debentures beginning on the next Trading Day and on each successive Trading Day until, and only until, the Trading Price per $1,000 principal amount of Debentures is greater than or equal to 98% of the product of the Last Reported Sale Price of
the Common Stock and the Conversion Rate. 
  
 The Trustee
shall be entitled at its sole discretion to consult with the Company and to request the assistance of the Company in connection with the Trustee’s duties and obligations pursuant to Section 15.01(a) hereof, and the Company agrees, if requested
by the Trustee, to cooperate with, and provide assistance to, the Trustee in carrying out its duties under this Section 15.01; provided, however, that nothing herein shall be construed to relieve the Trustee of its duties pursuant to
Section 15.01(a) hereof. 
  
 (b) In addition, if: 
  
 (i) (A) the Company distributes to all holders of its Common
Stock rights or warrants entitling them (for a period expiring within forty-five (45) days of the date of the distribution) to subscribe for or purchase shares of Common Stock at a price per share less than the Last Reported Sale Price of the Common
Stock on the Trading Day immediately preceding the declaration date of the distribution, or (B) the Company distributes to all holders of Common Stock assets (including cash), debt securities or rights to purchase securities of the Company, which
distribution has a per share value as 

  

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determined by the Company’s Board of Directors and set forth in a Board Resolution exceeding 10% of the Last Reported Sale Price of the Common Stock on
the Trading Day immediately preceding the declaration date for such distribution, then, in either case, the Debentures may be surrendered for conversion at any time on and after the date that the Company gives notice to the holders of such
distribution, which shall be not less than twenty (20) days prior to the Ex-Dividend Date for such distribution, until the earlier of the close of business on the Business Day immediately preceding, but not including, the Ex-Dividend Date or the
date the Company publicly announces that such distribution will not take place; provided that no adjustment to the Conversion Price or the ability of a holder of a Debenture to convert will be made if the holder will otherwise participate in
such distribution without conversion; and 
  
 (ii) the Company consolidates with or merges with or into another Person or is a party to a binding share exchange or conveys, transfers, sells, leases or otherwise disposes of all or substantially all of its properties and assets, in each
case pursuant to which the Common Stock is converted into cash or property other than securities, then the Debentures may be surrendered for conversion at any time from and after the date fifteen (15) days prior to the anticipated effective date of
the transaction and ending on and including the date fifteen (15) days after the anticipated effective date of the transaction. 
  
 The Board of Directors shall determine the anticipated effective date of the transaction, and such determination shall be conclusive and binding on the holders and shall
be publicly announced by the Company by publication on its web site or through such other public medium as it may use at that time not later than two (2) Business Days prior to such fifteenth day. 
  
 (c) A Debenture in respect of which a holder is electing to exercise its
option to require repurchase upon a Fundamental Change pursuant to Section 3.05 or repurchase pursuant to Section 3.06 may be converted only if such holder withdraws its election in accordance with Section 3.08(d). A holder of Debentures is not
entitled to any rights of a holder of Common Stock until such holder has converted his Debentures to Common Stock, and only to the extent such Debentures are deemed to have been converted to Common Stock under this Article 15. 
  
 Section 15.02. Exercise of Conversion Privilege; Settlement of Cash or
Common Stock upon Conversion; No Adjustment for Interest or Dividends. (a) In order to exercise the conversion privilege with respect to any Debenture in certificated form, the Company must receive at the office or agency of the Company
maintained for that purpose or, at the option of such holder, the Corporate Trust Office, such Debenture with the original or facsimile of the form entitled “Form of Conversion Notice” on the reverse thereof, duly completed and
manually signed (a “Conversion Notice”), together with such Debentures duly endorsed for transfer, accompanied by the funds, if any, required by Section 15.02(d). Such notice shall also state the name or names (with address or
addresses) in which the certificate or certificates for shares of Common Stock which shall be issuable on such conversion shall be issued, and shall be accompanied by transfer or similar taxes, if required pursuant to Section 15.07. 
  
 In order to exercise the conversion privilege with respect to any interest in
a Global Debenture, the beneficial holder must complete, or cause to be completed, the appropriate 

  

 69 

 
instruction form for conversion pursuant to the Depositary’s book-entry conversion program, deliver, or cause to be delivered, by book-entry delivery an
interest in such Global Debenture, furnish appropriate endorsements and transfer documents if required by the Company or the Trustee or Conversion Agent, and pay the funds, if any, required by this Section 15.02 and any transfer taxes if required
pursuant to Section 15.07. 
  
 (b) As promptly as practicable
after satisfaction of the requirements for conversion set forth above, subject to compliance with any restrictions on transfer if shares issuable on conversion are to be issued in a name other than that of the Debentureholder (as if such transfer
were a transfer of the Debenture or Debentures (or portion thereof) so converted), the Company shall issue and shall deliver to such Debentureholder at the office or agency maintained by the Company for such purpose pursuant to Section 5.02, a
certificate or certificates for the number of full shares of Common Stock issuable upon the conversion of such Debenture or portion thereof as determined by the Company in accordance with the provisions of this Article 15 and a check or cash in
respect of the Cash Amount pursuant to Section 15.02(h)(iii) (if applicable) and any fractional interest in respect of a share of Common Stock arising upon such conversion, calculated by the Company as provided in Section 15.03. In case any
Debenture of a denomination greater than $1,000 shall be surrendered for partial conversion, subject to Section 2.03, the Company shall execute and the Trustee shall authenticate and deliver to the holder of the Debenture so surrendered, without
charge to him, a new Debenture or Debentures in authorized denominations in an aggregate principal amount equal to the unconverted portion of the surrendered Debenture. 
  
 (c) Each conversion shall be deemed to have been effected as to any such Debenture (or portion thereof) on the date on which
the requirements set forth above in this Section 15.02 have been satisfied as to such Debenture (or portion thereof) (such date, the “Conversion Date”), and the Person in whose name any certificate or certificates for shares of
Common Stock shall be issuable upon such conversion shall be deemed to have become on said date the holder of record of the shares represented thereby; provided that any such surrender on any date when the stock transfer books of the Company
shall be closed shall constitute the Person in whose name the certificates are to be issued as the record holder thereof for all purposes on the next succeeding day on which such stock transfer books are open, but such conversion shall be at the
Conversion Rate in effect on the date upon which such Debenture shall be surrendered. 
  
 (d) Any Debenture or portion thereof surrendered for conversion during the period from the close of business on any Regular Record Date to the close of business on the Business Day preceding the following Interest
Payment Date that has not been called for redemption during such period shall be accompanied by payment, in immediately available funds or other funds acceptable to the Company, of an amount equal to the interest otherwise payable on such Interest
Payment Date on the principal amount being converted; provided that no such payment need be made (1) if the Company has specified a Redemption Date that is after a Regular Record Date and prior to the next Interest Payment Date, (2) if the
Company has specified a Repurchase Date following a Fundamental Change that is during such period or (3) to the extent of any overdue interest, if any overdue interest exists at the time of conversion with respect to such Debenture. Except as
provided above in this Section 15.02, no payment or other adjustment shall be made for interest accrued on any Debenture converted or for dividends on any shares issued upon the conversion of such Debenture as provided in this Article 15.

  

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 (e) Upon the conversion of an interest in a Global Debenture, the Trustee (or other Conversion Agent
appointed by the Company), or the Custodian at the direction of the Trustee (or other Conversion Agent appointed by the Company), shall make a notation on such Global Debenture as to the reduction in the principal amount represented thereby. The
Company shall notify the Trustee in writing of any conversions of Debentures effected through any Conversion Agent other than the Trustee. 
  
 (f) Upon the conversion of a Debenture, that portion of the accrued but unpaid interest with respect to the converted Debenture shall not be canceled,
extinguished or forfeited, but rather shall be deemed to be paid in full to the holder thereof through delivery of the Common Stock (together with the cash payment, if any, in lieu of fractional shares) or cash or a combination of cash and shares of
Common Stock in exchange for the Debenture being converted pursuant to the provisions hereof; and the fair market value of such shares of Common Stock and any such cash payment shall be treated as issued or paid, as the case may be, to the extent
thereof, first in exchange for and in satisfaction of the Company’s obligation to pay the principal amount of the converted Debenture and the accrued but unpaid interest, and the balance, if any, of such fair market value of such Common Stock
and any such cash payment shall be treated as issued or paid, as the case may be, in exchange for and in satisfaction of the right to convert the Debenture being converted pursuant to the provisions hereof. 
  
 (g) In the event that the Company receives a Conversion Notice on or prior to
(1) the date on which the Company gives a Redemption Notice or (2) the date that is 20 days prior to the Stated Maturity of the Debentures (the “Final Notice Date”), the following procedures shall apply: 
  
 (i) If the Company elects to satisfy all or any portion of
its obligation to convert the Debentures (the “Conversion Obligation”) in cash, the Company shall notify holders through the Trustee of the dollar amount to be satisfied in cash (which must be expressed either as 100% of the
Conversion Obligation or as a fixed dollar amount) at any time on or before the date that is two Business Days following the Conversion Date (the “Cash Settlement Notice Period”). If the Company timely elects to pay cash for any
portion of the shares of Common Stock otherwise issuable to holders upon conversion, holders may retract the Conversion Notice at any time during the two Business Days following the final day of the Cash Settlement Notice Period (the
“Conversion Retraction Period”). No such retraction can be made (and a Conversion Notice shall be irrevocable) if the Company does not elect to deliver cash in lieu of shares of Common Stock (other than cash in lieu of fractional
shares). Upon the expiration of a Conversion Retraction Period, a Conversion Notice shall be irrevocable. If the Company elects to satisfy all or any portion of the Conversion Obligation in cash, and the applicable Conversion Notice has not been
retracted, then settlement (in cash or in cash and shares of Common Stock) will occur on the Business Day following the final day of the 20-Trading Day period beginning on the day after the final day of the Conversion Retraction Period (the
“Cash Settlement Averaging Period”). 
  
 (ii) If the Company does not elect to satisfy any part of the Conversion Obligation in cash (other than cash in lieu of any fractional shares), delivery of the shares of Common Stock into which the Debentures are converted (and cash in lieu
of any 

  

 71 

 
fractional shares) shall occur through the Conversion Agent or the Depositary, as the case may be, as provided for in this Section 15.02(g) as soon as
practicable on or after the Conversion Date. 
  
 (h) Settlement
amounts will be computed as follows: 
  
 (i) If
the Company elects to satisfy the entire Conversion Obligation in shares of Common Stock, it shall deliver to holders that have delivered the Conversion Notice giving rise to the Conversion Obligation a number of shares of Common Stock equal to (A)
the aggregate principal amount of Debentures to be converted divided by $1,000, multiplied by (B) the Conversion Rate. In addition, the Company shall pay cash for any fractional shares of Common Stock based on the Last Reported Sale Price of the
Common Stock on the Trading Day immediately preceding the Conversion Date. 
  
 (ii) If the Company elects to satisfy the entire Conversion Obligation in cash, it shall deliver to holders that have delivered the Conversion Notice giving rise to the Conversion Obligation cash in an amount equal to
the product of: 
  
 (A) a number equal to (x) the
aggregate principal amount of Debentures to be converted divided by $1,000, multiplied by (y) the Conversion Rate; and 
  
 (B) the average Last Reported Sale Price of the Common Stock during the Cash Settlement Averaging Period. 
  
 (iii) If the Company elects to satisfy a fixed portion
(other than 100%) of the Conversion Obligation in cash, it shall deliver to holders the specified cash amount (the “Cash Amount”) and a number of shares of Common Stock equal to the greater of (A) zero and (B) the excess, if any, of
the number of shares of Common Stock calculated as if the Company elected to satisfy the entire Conversion Obligation in shares of Common Stock over the number of shares of Common Stock equal to the sum, for each day of the Cash Settlement Averaging
Period, of (x) the Cash Amount divided by the number of days in the Cash Settlement Averaging Period, divided by (y) the Last Reported Sale Price of the Common Stock. In addition, the Company shall pay cash for all fractional shares of Common Stock
based on the average Last Reported Sale Price of the Common Stock during the Cash Settlement Averaging Period. 
  
 (iv) If the Company elects to satisfy the Conversion Obligation in shares of Common Stock and if on the date of the Conversion Notice (A)
the Debentures are neither registered under the Securities Act nor immediately freely saleable pursuant to Rule 144(k) under the Securities Act and (B) there exists a Registration Default (as defined under the Registration Right Agreement), then the
Company shall deliver to Debentureholders an additional number of shares of Common Stock in accordance with Section 3(a) of the Registration Rights Agreement. 
  

(i) The Company must determine whether or not it will satisfy all or a portion of the Conversion Obligation in cash at the time it issues a Redemption
Notice and such notice will state the amount of the Conversion Obligation to be settled in cash (which must be expressed 

  

 72 

 
either as 100% of the Conversion Obligation or a fixed dollar amount). If the Company elects to satisfy all or any portion of the Conversion Obligation with
respect to conversions after the Final Notice Date in cash, on or before the Final Notice Date the Company will send a single notice to holders indicating the dollar amount to be satisfied in cash (which must be expressed either as 100% of the
Conversion Obligation or a fixed dollar amount). In the event that the Company receives a Conversion Notice after the date a Redemption Notice has been issued or the Final Notice Date, settlement amounts will be computed and settlement dates will be
determined in the same manner as set forth in clauses (g) and (h) of this Section 15.02 except that the Cash Settlement Averaging Period shall be the 20 Trading Day period beginning on the Trading Day after the Conversion Date. If a Conversion
Notice is received from holders of Debentures after the date that a Redemption Notice has been issued or the Final Notice Date, such holders may not retract their Conversion Notice. 
  
 Section 15.03. Cash Payments in Lieu of Fractional Shares. No fractional shares of Common Stock or scrip certificates
representing fractional shares shall be issued upon conversion of Debentures. If more than one Debenture shall be surrendered for conversion at one time by the same holder, the number of full shares that shall be issuable upon conversion shall be
computed on the basis of the aggregate principal amount of the Debentures (or specified portions thereof to the extent permitted hereby) so surrendered. If any fractional share of stock would be issuable upon the conversion of any Debenture or
Debentures, the Company shall make an adjustment and payment therefor in cash to the holder of Debentures at the Last Reported Sale Price of the Common Stock on the last Trading Day immediately preceding the day on which the Debentures (or specified
portions thereof) are deemed to have been converted. 
  
 Section
15.04. Conversion Rate. Each $1,000 principal amount of the Debentures shall be convertible into the number of shares of Common Stock specified in the form of Debenture (herein called the “Conversion Rate”) attached as
Exhibit A hereto (initially 60.4084 shares), subject to adjustment as provided in this Article 15. 
  
 Section 15.05. Adjustment of Conversion Rate. The Conversion Rate shall be adjusted from time to time by the Company as follows: 
  
 (a) In case the Company shall pay a dividend or make a distribution to all
holders of the outstanding Common Stock in shares of Common Stock, the Conversion Rate, as in effect at the opening of business on the day following the date fixed for the determination of stockholders entitled to receive such dividend or other
distribution, shall be increased by multiplying such Conversion Rate by a fraction, 
  
 (i) the numerator of which shall be the sum of the number of shares of Common Stock outstanding at the close of business on the date fixed
for the determination of stockholders entitled to receive such dividend or other distribution plus the total number of shares of Common Stock constituting such dividend or other distribution, and 
  
 (ii) the denominator of which shall be the number of shares
of Common Stock outstanding at the close of business on the date fixed for such determination, 
  

 73 

 such increase to become effective immediately after the opening of business on the Business Day following the date fixed
for such determination. If any dividend or distribution of the type described in this Section 15.05(a) is declared but not so paid or made, the Conversion Rate shall again be adjusted to the Conversion Rate that would then be in effect if such
dividend or distribution had not been declared. 
  
 (b) In case
the Company shall (other than pursuant to a dividend reinvestment plan or share purchase plan) issue rights, options or warrants to all holders of its Common Stock entitling them, for a period expiring within forty-five (45) days after the date
fixed for the determination of stockholders entitled to receive such rights, options or warrants, to subscribe for or purchase shares of Common Stock at a price per share less than the Current Market Price per share of the Common Stock on the date
fixed for the determination of stockholders entitled to receive such rights, options or warrants, the Conversion Rate in effect at the opening of business on the day following the date fixed for such determination shall be increased by multiplying
such Conversion Rate by a fraction, 
  
 (i) the
numerator of which shall be the number of shares of Common Stock outstanding at the close of business on the date fixed for such determination plus the number of shares of Common Stock so offered for subscription or purchase at such below Current
Market Price, and 
  
 (ii) the denominator of
which shall be the number of shares of Common Stock outstanding at the close of business on the date fixed for such determination plus the number of shares of Common Stock that the aggregate offering price of the total number of shares of Common
Stock so offered for subscription or purchase would purchase at such Current Market Price, 
  
 such adjustment shall be successively made whenever any such rights or warrants are issued and shall become effective immediately after the opening of business on the Business Day following the date fixed for such
determination. The Company shall not issue any such rights, options or warrants in respect of shares of Common Stock held in treasury by the Company. To the extent that shares of Common Stock are not delivered after the expiration of such rights or
warrants, the Conversion Rate shall be readjusted to the Conversion Rate that would then be in effect had the adjustments made upon the issuance of such rights or warrants been made on the basis of delivery of only the number of shares of Common
Stock actually delivered. If such rights or warrants are not so issued, the Conversion Rate shall again be adjusted to be the Conversion Rate that would then be in effect if such date fixed for the determination of stockholders entitled to receive
such rights or warrants had not been fixed. 
  
 In determining
whether any rights or warrants entitle the holders to subscribe for or purchase shares of Common Stock at less than such Current Market Price, and in determining the aggregate offering price of such shares of Common Stock, there shall be taken into
account any consideration received by the Company for such rights or warrants and any amount payable on exercise or conversion thereof, the value of such consideration, if other than cash, to be determined by the Board of Directors. 
  

 74 

 (c) In case outstanding shares of Common Stock shall be subdivided or split into a greater number of
shares of Common Stock, the Conversion Rate in effect at the opening of business on the day following the day upon which such subdivision or split becomes effective shall be proportionately increased, and, conversely, in case outstanding shares of
Common Stock shall be combined into a smaller number of shares of Common Stock, the Conversion Rate in effect at the opening of business on the day following the day upon which such combination becomes effective shall be proportionately reduced,
such increase or reduction, as the case may be, to become effective immediately after the opening of business on the day following the day upon which such subdivision, split or combination becomes effective. 
  
 (d) In case the Company shall, by dividend or otherwise, distribute to all
holders of its Common Stock evidences of its indebtedness, shares of capital stock, securities, cash or other property (but excluding any dividend or distribution referred to in Section 15.05(a), any rights, options or warrants referred to in
Section 15.05(b) and any dividend or distribution paid exclusively in cash referred to in Section 15.05(e)), the Conversion Rate shall be adjusted by multiplying the Conversion Rate in effect immediately prior to the close of business on the date
fixed for the determination of stockholders entitled to receive such distribution by a fraction, 
  
 (i) the numerator of which shall be the Current Market Price per share of the Common Stock on the date fixed for such determination, and

  
 (ii) the denominator of which shall be the
Current Market Price per share of the Common Stock on such date less the then Fair Market Value (as determined by the Board of Directors, whose determination shall be conclusive and described in a Board Resolution) on such date of the portion of the
evidences of indebtedness, shares of capital stock, securities, cash or other property so distributed applicable to one share of Common Stock, 
  
 such adjustment to become effective immediately prior to the opening of business on the Business Day following the date fixed for the determination of stockholders
entitled to receive such distribution; provided, however, that in the event that the Company makes a distribution to all holders of its Common Stock consisting of capital stock of, or similar equity interests in, a subsidiary or other
business unit of the Company, the Conversion Rate shall be adjusted by multiplying the Conversion Rate in effect immediately prior to the close of business on the date fixed for the determination of stockholders entitled to receive such distribution
by a fraction of which the numerator shall be the Spin-off Market Price per share of the Common Stock plus the Spin-off Market Price per share or similar equity interest of the subsidiary or other business unit of the Company on such date and the
denominator shall be the Spin-off Market Price per share of the Common Stock on the date fixed for such determination, such adjustment to become effective ten (10) consecutive Trading Days after the effective date of such distribution of capital
stock of, or similar equity interest in, a subsidiary or other business unit of the Company. In any case in which this Section 15.05(d) is applicable, Sections 15.05(a) and (b) shall not be applicable. If such dividend or distribution is not so paid
or made, the Conversion Rate shall again be adjusted to be the Conversion Rate that would then be in effect if such dividend or distribution had not been declared. 
  

 75 

 (e) In case the Company shall, by dividend or otherwise, distribute to all holders of its Common Stock
distributions consisting exclusively of cash, then, immediately after the close of business on such date for determination, the Conversion Rate shall be increased so that the same shall equal the rate determined by multiplying the Conversion Rate in
effect immediately prior to the close of business on the date fixed for determination of the stockholders entitled to receive such distribution by a fraction: 
  

(i) the numerator of which shall be equal to the Current Market Price per share of the Common Stock on such date fixed for
determination; and 
  
 (ii) the denominator of
which shall be equal to the Current Market Price per share of the Common Stock on such date fixed for such determination less the amount of such distribution of cash applicable to one share of Common Stock. 
  
 (f) In case a tender or exchange offer made by the Company or any subsidiary
of the Company for all or any portion of the Common Stock shall expire and such tender or exchange offer (as amended upon the expiration thereof) shall require the payment to stockholders of consideration per share of Common Stock having a Fair
Market Value (as determined by the Board of Directors, whose determination shall be conclusive and described in a resolution of the Board of Directors) that as of the last time (the “Expiration Time”) tenders or exchanges may be
made pursuant to such tender or exchange offer (as it may be amended) exceeds the Last Reported Sale Price of a share of Common Stock on the Trading Day next succeeding the Expiration Time, the Conversion Rate shall be increased so that the same
shall equal the rate determined by multiplying the Conversion Rate in effect immediately prior to the Expiration Time by a fraction: 
  
 (i) the numerator of which shall be the sum of (x) the Fair Market Value (determined as aforesaid) of the aggregate consideration payable
to stockholders based on the acceptance (up to any maximum specified in the terms of the tender or exchange offer) of all shares validly tendered or exchanged and not withdrawn as of the Expiration Time (the shares deemed so accepted up to any such
maximum, being referred to as the “Purchased Shares”) and (y) the product of the number of shares of Common Stock outstanding (less any Purchased Shares) at the Expiration Time and the Last Reported Sale Price of a share of Common
Stock on the Trading Day next succeeding the Expiration Time, and 
  
 (ii) the denominator of which shall be the number of shares of Common Stock outstanding (including any Purchased Shares) at the Expiration Time multiplied by the Last Reported Sale Price of a share of Common Stock on
the Trading Day next succeeding the Expiration Time, 
  
 such adjustment to become
effective immediately prior to the opening of business on the day following the Expiration Time. If the Company is obligated to purchase shares pursuant to any such tender or exchange offer, but the Company is permanently prevented by applicable law
from effecting any such purchases or all such purchases are rescinded, the Conversion Rate shall again be adjusted to be the Conversion Rate that would then be in effect if such tender or exchange offer had not been made. 
  

 76 

 (g) The reclassification of Common Stock into securities other than Common Stock (other than any
reclassification upon an event to which Section 15.06 applies) shall be deemed to involve (a) a distribution of such securities other than Common Stock to all holders of Common Stock (and the effective date of such reclassification shall be deemed
to be “the date fixed for the determination of stockholders entitled to receive such distribution” and the “date fixed for such determination” within the meaning of Section 15.05(d)), and (b) a subdivision, split or
combination, as the case may be, of the number of shares of Common Stock outstanding immediately prior to such reclassification into the number of shares of Common Stock outstanding immediately thereafter (and the effective date of such
reclassification shall be deemed to be “the day upon which such subdivision or split becomes effective” or “the day upon which such combination becomes effective”, as the case may be, and “the day upon which
such subdivision, split or combination becomes effective” within the meaning of Section 15.05(c)). 
  
 (h) Notwithstanding the foregoing provisions of this Section 15.05, no adjustment shall be made thereunder, nor shall an adjustment be made to the ability
of a holder of a Debenture to convert, for any distribution described therein if the holder will otherwise participate in the distribution without conversion of such holder’s Debentures. 
  
 (i) The Company may make such increases in the Conversion Rate, in addition
to those required by clauses (a) through (g) of this Section 15.05 as the Board of Directors considers to be advisable to avoid or diminish any income tax to holders of Common Stock or rights to purchase Common Stock resulting from any dividend or
distribution of stock (or rights to acquire stock) or from any event treated as such for income tax purposes. 
  
 To the extent permitted by applicable law, the Company from time to time may increase the Conversion Rate by any amount for any period of time if the
period is at least twenty (20) days, the increase is irrevocable during the period and the Board of Directors shall have made a determination that such increase would be in the best interests of the Company, which determination shall be conclusive.
Whenever the Conversion Rate is increased pursuant to the preceding sentence, the Company shall mail to holders of record of the Debentures a notice of the increase at least fifteen (15) days prior to the date the increased Conversion Rate takes
effect, and such notice shall state the increased Conversion Rate and the period during which it will be in effect. 
  
 (j) No adjustment to the Conversion Rate need be made: 
  
 (i) upon the issuance of any shares of Common Stock pursuant to any present or future plan providing for the reinvestment of dividends or
interest payable on securities of the Company and the investment of additional optional amounts in shares of Common Stock under any plan; 
  
 (ii) upon the issuance of any shares of Common Stock or options or rights to purchase those shares pursuant to any present or future
employee, director or consultant benefit plan or program of or assumed by the Company or any of its subsidiaries; 
  

 77 

 (iii) upon the issuance of any shares of Common Stock pursuant to any option, warrant,
right, or exercisable, exchangeable or convertible security not described in (ii) above and outstanding as of the Original Issuance Date; 
  
 (iv) upon the issuance of any shares of Common Stock as consideration in connection with acquisitions or financing activities by the
Company; 
  
 (v) for a change in the par value of
the Common Stock; or 
  
 (vi) for accrued and
unpaid interest, if any. 
  
 (k) No adjustment in the Conversion
Rate shall be required unless such adjustment would require an increase or decrease of at least 1% in such rate; provided that any adjustments that by reason of this Section 15.05(k) are not required to be made shall be carried forward and
taken into account in any subsequent adjustment. All calculations under this Article 15 shall be made by the Company and shall be made to the nearest cent or to the nearest one-ten thousandth (1/10,000) of a share, as the case may be. 
  
 (l) Whenever the Conversion Rate is adjusted as herein provided, the Company
shall promptly file with the Trustee and any Conversion Agent other than the Trustee an Officers’ Certificate setting forth the Conversion Rate after such adjustment and setting forth a brief statement of the facts requiring such adjustment.
Unless and until a Responsible Officer of the Trustee shall have received such Officers’ Certificate, the Trustee shall not be deemed to have knowledge of any adjustment of the Conversion Rate and may assume that the last Conversion Rate of
which it has knowledge is still in effect. Promptly after delivery of such certificate, the Company shall prepare a notice of such adjustment of the Conversion Rate setting forth the adjusted Conversion Rate and the date on which each adjustment
becomes effective and shall mail such notice of such adjustment of the Conversion Rate to the holder of each Debenture at its last address appearing on the Debenture Register provided for in Section 2.05 of this Indenture, within twenty (20) days
after execution thereof. Failure to deliver such notice shall not affect the legality or validity of any such adjustment. 
  
 (m) In any case in which this Section 15.05 provides that an adjustment shall become effective immediately after (1) a record date or Stock Record Date
for an event, (2) the date fixed for the determination of stockholders entitled to receive a dividend or distribution pursuant to Section 15.05(a), (3) a date fixed for the determination of stockholders entitled to receive rights or warrants
pursuant to Section 15.05(b) or (4) the Expiration Time for any tender or exchange offer pursuant to Section 15.05(f) (each a “Determination Date”), the Company may elect to defer until the occurrence of the applicable Adjustment
Event (as hereinafter defined) (x) issuing to the holder of any Debenture converted after such Determination Date and before the occurrence of such Adjustment Event, the additional shares of Common Stock or other securities issuable upon such
conversion by reason of the adjustment required by such Adjustment Event over and above the Common Stock issuable upon such conversion before giving effect to such adjustment and (y) paying to such holder any amount in cash in lieu of any fraction
pursuant to Section 15.03; provided that in the case of an adjustment made pursuant to Section 15.05(d) with respect to a distribution of shares of capital stock of, or similar equity interest in, a subsidiary or other business unit of the
Company, the Company may defer the issuance of such additional 

  

 78 

 
shares and cash payment, if any, until the third Business Day immediately following the last day of the 20 consecutive Trading Day period commencing on the
fifth Trading Day after the Ex-Dividend Date. For purposes of this Section 15.05(m), the term “Adjustment Event” shall mean: 
  
 (i) in any case referred to in clause (1) hereof, the occurrence of such event; 
  
 (ii) in any case referred to in clause (2) hereof, the date
any such dividend or distribution is paid or made; 
  
 (iii) in any case referred to in clause (3) hereof, the date of expiration of such rights or warrants; and 
  
 (iv) in any case referred to in clause (4) hereof, the date a sale or exchange of Common Stock pursuant to such tender or exchange offer
is consummated and becomes irrevocable. 
  
 (n) For purposes of
this Section 15.05, the number of shares of Common Stock at any time outstanding shall not include shares held in the treasury of the Company but shall include shares issuable in respect of scrip certificates issued in lieu of fractions of shares of
Common Stock. The Company will not pay any dividend or make any distribution on shares of Common Stock held in the treasury of the Company. 
  
 Section 15.06. Effect of Reclassification, Consolidation, Merger or Sale. If any of the following events occur, namely (i) any reclassification or
change of the outstanding shares of Common Stock (other than a subdivision or combination to which Section 15.05(c) applies), (ii) any consolidation, merger or combination of the Company with another Person as a result of which holders of Common
Stock shall be entitled to receive stock, other securities or other property or assets (including cash) with respect to or in exchange for such Common Stock, or (iii) any sale or conveyance of all or substantially all of the properties and assets of
the Company to any other Person as a result of which holders of Common Stock shall be entitled to receive stock, other securities or other property or assets (including cash) with respect to or in exchange for such Common Stock, then the Company or
the successor or purchasing Person, as the case may be, shall execute with the Trustee a supplemental indenture (which shall comply with the Trust Indenture Act as in force at the date of execution of such supplemental indenture) providing that each
Debenture shall be convertible into the kind and amount of shares of stock, other securities or other property or assets (including cash) receivable upon such reclassification, change, consolidation, merger, combination, sale or conveyance by a
holder of a number of shares of Common Stock issuable upon conversion of such Debentures (assuming, for such purposes, a sufficient number of authorized shares of Common Stock are available to convert all such Debentures) immediately prior to such
reclassification, change, consolidation, merger, combination, sale or conveyance assuming such holder of Common Stock did not exercise his rights of election, if any, as to the kind or amount of stock, other securities or other property or assets
(including cash) receivable upon such reclassification, change, consolidation, merger, combination, sale or conveyance (provided that, if the kind or amount of stock, other securities or other property or assets (including cash) receivable
upon such reclassification, change, consolidation, merger, combination, sale or conveyance is not the same for each share of 

  

 79 

 
Common Stock in respect of which such rights of election shall not have been exercised (“non-electing share”), then for the purposes of this
Section 15.06 the kind and amount of stock, other securities or other property or assets (including cash) receivable upon such reclassification, change, consolidation, merger, combination, sale or conveyance for each non-electing share shall be
deemed to be the kind and amount so receivable per share by a plurality of the non-electing shares). Such supplemental indenture shall provide for adjustments which shall be as nearly equivalent as may be practicable to the adjustments provided for
in this Article 15. 
  
 The Company shall cause notice of the
execution of such supplemental indenture to be mailed to each holder of Debentures, at its address appearing on the Debenture Register provided for in Section 2.05 of this Indenture, within twenty (20) days after execution thereof. Failure to
deliver such notice shall not affect the legality or validity of such supplemental indenture. 
  
 The above provisions of this Section 15.06 shall similarly apply to successive reclassifications, changes, consolidations, mergers, combinations, sales and conveyances. 
  
 If this Section 15.06 applies to any event or occurrence, Section 15.05 shall
not apply. 
  
 Section 15.07. Taxes on Shares Issued. The
issue of stock certificates on conversions of Debentures shall be made without charge to the converting Debentureholder for any documentary, stamp or similar issue or transfer tax in respect of the issue thereof. The Company shall not, however, be
required to pay any such tax which may be payable in respect of any transfer involved in the issue and delivery of stock in any name other than that of the holder of any Debenture converted, and the Company shall not be required to issue or deliver
any such stock certificate unless and until the Person or Persons requesting the issue thereof shall have paid to the Company the amount of such tax or shall have established to the satisfaction of the Company that such tax has been paid.

  
 Section 15.08. Reservation of Shares, Shares to Be Fully
Paid; Compliance with Governmental Requirements; Listing of Common Stock. The Company shall provide, free from preemptive rights, out of its authorized but unissued shares or shares held in treasury, sufficient shares of Common Stock to provide
for the conversion of the Debentures from time to time as such Debentures are presented for conversion. 
  
 Before taking any action which would cause an adjustment increasing the Conversion Rate to an amount that would cause the Conversion Price to be reduced
below the then par value, if any, of the shares of Common Stock issuable upon conversion of the Debentures, the Company will take all corporate action which may, in the opinion of its counsel, be necessary in order that the Company may validly and
legally issue shares of such Common Stock at such adjusted Conversion Rate. 
  
 The Company covenants that all shares of Common Stock which may be issued upon conversion of Debentures will upon issue be fully paid and nonassessable by the Company and free from all taxes, Liens and charges with
respect to the issue thereof. 
  
 The Company covenants that, if
any shares of Common Stock to be provided for the purpose of conversion of Debentures hereunder require registration with or approval of any governmental authority under any federal or state law before such shares may be validly issued 

  

 80 

 
upon conversion, the Company will in good faith and as expeditiously as possible, to the extent then permitted by the rules and interpretations of the
Commission (or any successor thereto), endeavor to secure such registration or approval, as the case may be. 
  
 The Company further covenants that, if at any time the Common Stock shall be listed on the Nasdaq National Market or any other national securities
exchange or automated quotation system, the Company will, if permitted by the rules of such exchange or automated quotation system, list and keep listed, so long as the Common Stock shall be so listed on such exchange or automated quotation system,
all Common Stock issuable upon conversion of the Debenture; provided that if the rules of such exchange or automated quotation system permit the Company to defer the listing of such Common Stock until the first conversion of the Debentures
into Common Stock in accordance with the provisions of this Indenture, the Company covenants to list such Common Stock issuable upon conversion of the Debentures in accordance with the requirements of such exchange or automated quotation system at
such time. 
  
 Section 15.09. Responsibility of Trustee.
The Trustee and any other Conversion Agent shall not at any time be under any duty or responsibility to any holder of Debentures to determine the Conversion Rate or whether any facts exist which may require any adjustment of the Conversion Rate, or
with respect to the nature or extent or calculation of any such adjustment when made, or with respect to the method employed, or herein or in any supplemental indenture provided to be employed, in making the same. The Trustee and any other
Conversion Agent shall not be accountable with respect to the validity or value (or the kind or amount) of any shares of Common Stock, or of any securities or property, which may at any time be issued or delivered upon the conversion of any
Debenture; and the Trustee and any other Conversion Agent make no representations with respect thereto. Neither the Trustee nor any Conversion Agent shall be responsible for any failure of the Company to issue, transfer or deliver any shares of
Common Stock or stock certificates or other securities or property or cash upon the surrender of any Debenture for the purpose of conversion or to comply with any of the duties, responsibilities or covenants of the Company contained in this Article
15. Without limiting the generality of the foregoing, neither the Trustee nor any Conversion Agent shall be under any responsibility to determine the correctness of any provisions contained in any supplemental indenture entered into pursuant to
Section 15.06 relating either to the kind or amount of shares of stock or securities or property (including cash) receivable by Debentureholders upon the conversion of their Debentures after any event referred to in such Section 15.06 or to any
adjustment to be made with respect thereto, but, subject to the provisions of Section 8.01, may accept as conclusive evidence of the correctness of any such provisions, and shall be protected in relying upon, the Officers’ Certificate (which
the Company shall be obligated to file with the Trustee prior to the execution of any such supplemental indenture) with respect thereto. 
  
 Section 15.10. Notice to Holders Prior to Certain Actions. In case: 
  
 (a) the Company shall declare a dividend (or any other distribution) on its Common Stock that would require
an adjustment in the Conversion Rate pursuant to Section 15.05; or 
  

 81 

 (b) the Company shall authorize the granting to the holders of all or substantially all
of its Common Stock of rights or warrants to subscribe for or purchase any share of any class or any other rights or warrants; or 
  
 (c) of any reclassification or reorganization of the Common Stock of the Company (other than a subdivision or combination of its
outstanding Common Stock, or a change in par value, or from par value to no par value, or from no par value to par value), or of any consolidation or merger to which the Company is a party and for which approval of any stockholders of the Company is
required, or of the sale or transfer of all or substantially all of the assets of the Company; or 
  
 (d) of the voluntary or involuntary dissolution, liquidation or winding up of the Company; 
  
 the Company shall cause to be filed with the Trustee and to be mailed to each holder of
Debentures at its address appearing on the Debenture Register provided for in Section 2.05 of this Indenture, as promptly as possible but in any event at least ten (10) days prior to the applicable date hereinafter specified, a notice stating (x)
the date on which a record is to be taken for the purpose of such dividend, distribution or rights or warrants, or, if a record is not to be taken, the date as of which the holders of Common Stock of record to be entitled to such dividend,
distribution or rights are to be determined, or (y) the date on which such reclassification, consolidation, merger, sale, transfer, dissolution, liquidation or winding up is expected to become effective or occur, and the date as of which it is
expected that holders of Common Stock of record shall be entitled to exchange their Common Stock for securities or other property deliverable upon such reclassification, consolidation, merger, sale, transfer, dissolution, liquidation or winding up.
Failure to give such notice, or any defect therein, shall not affect the legality or validity of such dividend, distribution, reclassification, consolidation, merger, sale, transfer, dissolution, liquidation or winding up. 
  
 Section 15.11. Stockholder Rights Plans. To the extent that the
Company adopts any future rights plan, upon conversion of the Debentures into Common Stock, holders of Debentures shall receive, in addition to Common Stock, the rights under the future rights plan unless the rights have separated from the Common
Stock at the time of conversion, in which case the Conversion Rate shall be adjusted in accordance with Section 15.05(d). 
  
 ARTICLE 16 
 MISCELLANEOUS
PROVISIONS 
  
 Section 16.01. Confidentiality
Exception. Notwithstanding any other provision of this Indenture, each Debentureholder (and each employee, representative or other agent of such Debentureholder) may disclose to any and all persons, without limitation of any kind, the tax
treatment and tax structure (as such terms are used in Sections 6011, 6111 and 6112 of the Code and the Treasury Regulations promulgated thereunder) of the Debentures and all materials of any kind (including opinions or other tax analyses) that are
provided relating to such tax treatment and tax structure, other than any information for which nondisclosure is reasonably necessary in order to comply with applicable securities laws, and the ability of the Company, its subsidiaries and their
respective representatives, affiliates, employees, officers, directors or other agents to 

  

 82 

 
consult any tax advisor, including an independent tax advisor, regarding the tax treatment or tax structure of the Debentures (and any transactions related
thereto) shall not be restricted in any manner. 
  
 Section 16.02.
Provisions Binding on Company’s Successors. All the covenants, stipulations, promises and agreements by the Company contained in this Indenture shall bind its successors and assigns whether so expressed or not. 
  
 Section 16.03. Official Acts by Successor Corporation. Any act or
proceeding by any provision of this Indenture authorized or required to be done or performed by any board, committee or officer of the Company shall and may be done and performed with like force and effect by the like board, committee or officer of
any Person that shall at the time be the lawful sole successor of the Company. 
  
 Section 16.04. Addresses for Notices, Etc. Any notice or demand which by any provision of this Indenture is required or permitted to be given or served by the Trustee or by the holders of Debentures on the
Company shall be deemed to have been sufficiently given or made, for all purposes, if given or served by being deposited, postage prepaid, by registered or certified mail in a post office letter box or sent by telecopier transmission addressed as
follows: Navigant International, Inc., 84 Inverness Circle East, Englewood, CO 80112, Attention: Chief Financial Officer; Fax: (303) 706-0678. Any notice, direction, request or demand hereunder to or upon the Trustee shall be deemed to have been
sufficiently given or made, for all purposes, if given or served by being deposited, postage prepaid, by registered or certified mail in a post office letter box or sent by telecopier transmission addressed to the Corporate Trust Office of the
Trustee. 
  
 The Trustee, by notice to the Company, may designate
additional or different addresses for subsequent notices or communications. 
  
 Any notice or communication mailed to a Debentureholder shall be mailed to him by first class mail, postage prepaid, at his address as it appears on the Debenture Register and shall be sufficiently given to him if so
mailed within the time prescribed. 
  
 Failure to mail a notice or
communication to a Debentureholder or any defect in it shall not affect its sufficiency with respect to other Debentureholders. If a notice or communication is mailed in the manner provided above, it is duly given, whether or not the addressee
receives it. 
  
 Section 16.05. Governing Law. This
Indenture and each Debenture shall be deemed to be a contract made under the laws of the State of New York, and for all purposes shall be construed in accordance with the laws of the State of New York (including Section 5-1401 of the New York
General Obligations Law or any successor to such statute). 
  
 Section 16.06. Evidence of Compliance with Conditions Precedent, Certificates to Trustee. Upon any application or demand by the Company to the Trustee to take any action under any of the provisions of this Indenture, the Company
shall furnish to the Trustee an Officers’ Certificate stating that all conditions precedent, if any, provided for in this Indenture relating to the proposed action have been complied with, and an Opinion of Counsel stating that, in the opinion
of such counsel, all such conditions precedent have been complied with. 
  

 83 

 Each certificate or opinion provided for in this Indenture and delivered to the Trustee with respect to
compliance with a condition or covenant provided for in this Indenture shall include: (1) a statement that each Person making such certificate or opinion has read such covenant or condition; (2) a brief statement as to the nature and scope of the
examination or investigation upon which the statement or opinion contained in such certificate or opinion is based; (3) a statement that, in the opinion of each such Person, he has made such examination or investigation as is necessary to enable him
to express an informed opinion as to whether or not such covenant or condition has been complied with; and (4) a statement as to whether or not, in the opinion of each such Person, such condition or covenant has been complied with. 
  
 Section 16.07. Legal Holidays. In any case in which the date of
maturity of interest on or principal of the Debentures or the Redemption Date of any Debenture or any Repurchase Date with respect to any Debenture will not be a Business Day, then payment of such interest on or principal of the Debentures need not
be made on such date, but may be made on the next succeeding Business Day with the same force and effect as if made on the date of maturity or the Redemption Date or the Repurchase Date, as the case may be, and no interest shall accrue for the
period from and after such date. 
  
 Section 16.08. Company
Responsible for Making Calculations. Unless otherwise specified in this Indenture, the Company will be responsible for making all calculations called for under the Debentures. These calculations include, but are not limited to, determination of
the Current Market Price, Last Reported Sale Price and Spin-off Market Price, the amount of accrued interest payable on the Debentures and the Conversion Rate of the Debentures. The Company will make these calculations in good faith and, absent
manifest error, these calculations will be final and binding on the Debentureholders. Promptly after the calculation thereof, the Company will provide to each of the Trustee and the Conversion Agent an Officers’ Certificate setting forth a
schedule of its calculations, and each of the Trustee and the Conversion Agent is entitled to conclusively rely upon the accuracy of such calculations without independent verification. The Trustee will forward the Company’s calculations to any
holder upon the request of such holder. 
  
 Section 16.09.
Trust Indenture Act. This Indenture is hereby made subject to, and shall be governed by, the provisions of the Trust Indenture Act required to be part of and to govern indentures qualified under the Trust Indenture Act; provided that
unless otherwise required by law, notwithstanding the foregoing, this Indenture and the Debentures issued hereunder shall not be subject to the provisions of subsections (a)(1), (a)(2), and (a)(3) of Section 314 of the Trust Indenture Act as now in
effect or as hereafter amended or modified; provided further that this Section 16.09 shall not require this Indenture or the Trustee to be qualified under the Trust Indenture Act prior to the time such qualification is in fact required under
the terms of the Trust Indenture Act, nor shall it constitute any admission or acknowledgment by any party to the Indenture that any such qualification is required prior to the time such qualification is in fact required under the terms of the Trust
Indenture Act. If any provision hereof limits, qualifies or conflicts with another provision hereof which is required to be included in an indenture qualified under the Trust Indenture Act, such required provision shall control. 
  
 Section 16.10. No Security Interest Created. Except as provided in
Section 8.06, nothing in this Indenture or in the Debentures, expressed or implied, shall be construed to constitute a 

  

 84 

 
security interest under the Uniform Commercial Code or similar legislation, as now or hereafter enacted and in effect, in any jurisdiction in which property
of the Company or its subsidiaries is located. 
  
 Section 16.11.
Benefits of Indenture. Nothing in this Indenture or in the Debentures, express or implied, shall give to any Person, other than the parties hereto, any Paying Agent, any authenticating agent, any Debenture Registrar and their successors
hereunder and the holders of Debentures any benefit or any legal or equitable right, remedy or claim under this Indenture. 
  
 Section 16.12. Table of Contents, Headings, Etc. The table of contents and the titles and headings of the Articles and Sections of this Indenture
have been inserted for convenience of reference only, are not to be considered a part hereof, and shall in no way modify or restrict any of the terms or provisions hereof. 
  
 Section 16.13. Authenticating Agent. The Trustee may appoint an authenticating agent that shall be authorized to act
on its behalf, and subject to its direction, in the authentication and delivery of Debentures in connection with the original issuance thereof and transfers and exchanges of Debentures hereunder, including under Sections 2.04, 2.05, 2.06, 2.07, 3.02
and 3.08, as fully to all intents and purposes as though the authenticating agent had been expressly authorized by this Indenture and those Sections to authenticate and deliver Debentures. For all purposes of this Indenture, the authentication and
delivery of Debentures by the authenticating agent shall be deemed to be authentication and delivery of such Debentures “by the Trustee” and a certificate of authentication executed on behalf of the Trustee by an authenticating agent shall
be deemed to satisfy any requirement hereunder or in the Debentures for the Trustee’s certificate of authentication. Such authenticating agent shall at all times be a Person eligible to serve as trustee hereunder pursuant to Section 8.09.

  
 Any corporation into which any authenticating agent may be
merged or converted or with which it may be consolidated, or any corporation resulting from any merger, consolidation or conversion to which any authenticating agent shall be a party, or any corporation succeeding to the corporate trust business of
any authenticating agent, shall be the successor of the authenticating agent hereunder, if such successor corporation is otherwise eligible under this Section 16.13, without the execution or filing of any paper or any further act on the part of the
parties hereto or the authenticating agent or such successor corporation. 
  
 Any authenticating agent may at any time resign by giving written notice of resignation to the Trustee and to the Company. The Trustee may at any time terminate the agency of any authenticating agent by giving written
notice of termination to such authenticating agent and to the Company. Upon receiving such a notice of resignation or upon such a termination, or in case at any time any authenticating agent shall cease to be eligible under this Section 16.13, the
Trustee shall either promptly appoint a successor authenticating agent or itself assume the duties and obligations of the former authenticating agent under this Indenture and, upon such appointment of a successor authenticating agent, if made, shall
give written notice of such appointment of a successor authenticating agent to the Company and shall mail notice of such appointment of a successor authenticating agent to all holders of Debentures as the names and addresses of such holders appear
on the Debenture Register. 
  

 85 

 The Company agrees to pay to the authenticating agent from time to time such reasonable compensation for
its services as shall be agreed upon in writing between the Company and the authenticating agent. 
  
 The provisions of Sections 8.02, 8.03, 8.04 and 9.03 and this Section 16.13 shall be applicable to any authenticating agent. 
  
 Section 16.14. Execution in Counterparts. This Indenture may be
executed in any number of counterparts, each of which shall be an original, but such counterparts shall together constitute but one and the same instrument. 
  
 Section 16.15. Severability. In case any provision in this Indenture or in the Debentures shall be invalid, illegal or unenforceable, then (to the
extent permitted by law) the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby. 
  
 Wells Fargo Bank Minnesota, N.A. hereby accepts the trusts in this Indenture declared and provided, upon the terms and conditions herein above set forth.

  
 [THE REMAINDER OF THIS PAGE IS INTENTIONALLY LEFT BLANK]

  

 86 

 IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be duly executed. 
  

			
	 NAVIGANT INTERNATIONAL, INC.

		
	By:	 	 /s/ Robert C. Griffith

	 	 	

	Name:	 	 Robert C. Griffith

	Title:	 	Chief Operating Officer, Chief
Financial Officer and Treasurer

  

			
	 WELLS FARGO BANK MINNESOTA, N.A., as
 Trustee

		
	By:	 	 /s/ Frank McDonald

	 	 	

	Name:	 	Frank McDonald
	Title:	 	Vice President

  

 87 

  
 EXHIBIT A 

 
 [Include only for Global Debentures:] 
  
 [UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST
COMPANY (55 WATER STREET, NEW YORK, NEW YORK) (THE “DEPOSITARY”, WHICH TERM INCLUDES ANY SUCCESSOR DEPOSITORY FOR THE CERTIFICATES) TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE
ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITARY (AND ANY PAYMENT HEREIN IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITARY), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.] 
  
 [Include only for Debentures that are Restricted Securities:] 
  
 [THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
“SECURITIES ACT”), OR THE SECURITIES LAWS OF ANY STATE OR OTHER JURISDICTION. NEITHER THIS SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF
IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, SUCH REGISTRATION. THE HOLDER OF THIS SECURITY, BY ITS ACCEPTANCE HEREOF, (1) REPRESENTS THAT IT IS A “QUALIFIED INSTITUTIONAL BUYER” (AS
DEFINED IN RULE 144A UNDER THE SECURITIES ACT (“RULE 144A”)); (2) AGREES ON ITS OWN BEHALF AND ON BEHALF OF ANY INVESTOR ACCOUNT FOR WHICH IT HAS PURCHASED SECURITIES, TO OFFER, SELL OR OTHERWISE TRANSFER SUCH SECURITY OR ANY COMMON
STOCK ISSUABLE UPON CONVERSION OF SUCH SECURITY, PRIOR TO THE EXPIRATION OF THE HOLDING PERIOD APPLICABLE TO SALES OF THIS SECURITY UNDER RULE 144 UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION) ONLY (A) TO THE ISSUER, (B) PURSUANT TO A
REGISTRATION STATEMENT THAT HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT (AND WHICH CONTINUES TO BE EFFECTIVE AT THE TIME OF SUCH TRANSFER), (C) FOR SO LONG AS THE SECURITIES ARE ELIGIBLE FOR RESALE PURSUANT TO RULE 144A, IN COMPLIANCE WITH
RULE 144A TO A PERSON IT REASONABLY BELIEVES IS A QUALIFIED INSTITUTIONAL BUYER THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A
OR (D) PURSUANT TO ANOTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT; SUBJECT TO THE ISSUER’S AND THE TRUSTEE’S RIGHT PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER PURSUANT TO CLAUSE (D) TO REQUIRE THE
DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR 

  

 
OTHER INFORMATION SATISFACTORY TO EACH OF THEM; AND (3) AGREES THAT IT WILL DELIVER TO EACH PERSON TO WHOM THIS SECURITY IS TRANSFERRED A NOTICE
SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND. THIS LEGEND WILL BE REMOVED UPON THE TRANSFER OF THIS SECURITY PURSUANT TO CLAUSE 2(B) ABOVE OR UNDER RULE 144 UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION).] 
  
 THE HOLDER OF THIS SECURITY IS ENTITLED TO THE BENEFITS OF A REGISTRATION RIGHTS AGREEMENT
DATED AS OF NOVEMBER 7, 2003 AND, BY ITS ACCEPTANCE HEREOF, AGREES TO BE BOUND BY AND TO COMPLY WITH THE PROVISIONS OF SUCH REGISTRATION RIGHTS AGREEMENT. 
  

 A-2 

 NAVIGANT INTERNATIONAL, INC. 
  
 4.875% CONVERTIBLE SUBORDINATED DEBENTURE DUE 2023 
  
 CUSIP: 63935RAA6 
  

			
	No.	  	$

  
 Navigant
International, Inc., a corporation duly organized and validly existing under the laws of the State of Delaware (herein called the “Company”, which term includes any successor corporation under the Indenture referred to on the
reverse hereof), for value received, hereby promises to pay to CEDE & CO. or its registered assigns [the principal sum of [•]] [the principal sum set forth on Schedule 1 hereto]1 on November 1, 2023 at the office or agency of the Company maintained for that purpose in accordance with the terms of the Indenture, in such coin or currency
of the United States of America as at the time of payment shall be legal tender for the payment of public and private debts, and to pay interest, semiannually on May 1 and November 1 of each year, commencing May 1, 2004, on said principal sum at
said office or agency, in like coin or currency, at the rate per annum of 4.875%, from the May 1 or November 1, as the case may be, next preceding the date of this Debenture to which interest has been paid or duly provided for, unless the date
hereof is a date to which interest has been paid or duly provided for, in which case from the date of this Debenture, or unless no interest has been paid or duly provided for on the Debentures, in which case from November 7, 2003 until payment of
said principal sum has been made or duly provided for. Notwithstanding the foregoing, if the date hereof is after any April 15 or October 15, as the case may be, and before the following May 1 or November 1, this Debenture shall bear interest from
such date; provided that if the Company shall default in the payment of interest due on such May 1 or November 1, then this Debenture shall bear interest from the next preceding May 1 or November 1 to which interest has been paid or duly
provided for; and provided further that if no interest has been paid or duly provided for on this Debenture, then this Debenture shall bear interest from November 7, 2003. Except as otherwise provided in the Indenture, the interest payable on
the Debenture pursuant to the Indenture on any May 1 or November 1 will be paid to the Person entitled thereto as it appears in the Debenture Register at the close of business on the Regular Record Date, which shall be the April 15 or October 15
(whether or not a Business Day) next preceding such May 1 or November 1, as provided in the Indenture; provided that any such interest not punctually paid or duly provided for shall be payable as provided in the Indenture. The Company shall
pay interest (i) on any Debentures in certificated form by check mailed to the address of the Person entitled thereto as it appears in the Debenture Register (or, upon written notice, by wire transfer in immediately available funds, if such Person
is entitled to interest on Debentures with an aggregate principal amount in excess of $2,000,000) or (ii) on any Global Debenture by wire transfer of immediately available funds to the account of the Depositary or its nominee. 
  
 The Company promises to pay interest on overdue principal and (to the extent
that payment of such interest is enforceable under applicable law) interest at the rate of 4.875% per annum, compounded semiannually. 

	1	For Global Debentures only. 

  

 A-3 

 Reference is made to the further provisions of this Debenture set forth on the reverse hereof, including,
without limitation, provisions giving the holder of this Debenture the right to convert this Debenture into Common Stock of the Company on the terms and subject to the limitations referred to on the reverse hereof and as more fully specified in the
Indenture. Under the circumstances described in the Indenture, the Company may fulfill all or part of its conversion obligation by delivering cash in lieu of Common Stock. 
  
 This Debenture shall be deemed to be a contract made under the laws of the State of New York, and for all purposes shall be
construed in accordance with and governed by the laws of the State of New York (including Section 5-1401 of the New York General Obligations Law or any successor to such statute). 
  
 This Debenture shall not be valid or become obligatory for any purpose until the certificate of authentication hereon shall
have been manually signed by the Trustee or a duly authorized authenticating agent under the Indenture. 
  

 A-4 

 IN WITNESS WHEREOF, the Company has caused this Debenture to be duly executed. 
  

			
	NAVIGANT INTERNATIONAL, INC.
		
	By:	 	 
	 	 	

  
                     , 2003 
  
 TRUSTEE’S CERTIFICATE OF AUTHENTICATION 
  
 This is one of the Debentures described in the within-named Indenture. 
  

			
	 WELLS FARGO BANK MINNESOTA, N.A.,
as Trustee

		
	By:	 	 
	 	 	

	 	 	 Authorized Signatory

  
                             , or 
  

			
		
	By:	 	 
	 	 	

	 	 	As Authenticating Agent

  

			
		
	By:	 	 
	 	 	

	 	 	Authorized Signatory

  

 A-5 

 FORM OF REVERSE OF DEBENTURE 
  
 NAVIGANT INTERNATIONAL, INC. 
  
 4.875% CONVERTIBLE SUBORDINATED DEBENTURE DUE 2023 
  
 This Debenture is one of a duly authorized issue of Debentures of the Company, designated as its 4.875% Convertible Subordinated Debentures due 2023
(herein called the “Debentures”), limited in aggregate principal amount to $                     , issued and to be issued under and
pursuant to an Indenture dated as of November 7, 2003 (herein called the “Indenture”), between the Company and Wells Fargo Bank Minnesota, N.A., as trustee (herein called the “Trustee”), to which Indenture and all
indentures supplemental thereto reference is hereby made for a description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Trustee, the Company and the holders of the Debentures. 
  
 In case an Event of Default shall have occurred and be continuing, the
principal of and accrued interest on all Debentures may be declared by either the Trustee or the holders of not less than 25% in aggregate principal amount of the Debentures then outstanding, and upon said declaration shall become, due and payable,
in the manner, with the effect and subject to the conditions provided in the Indenture. 
  
 The Indenture contains provisions permitting the Company and the Trustee, with the consent of the holders of at least a majority in aggregate principal amount of the Debentures at the time outstanding, to execute
supplemental indentures adding any provisions to or changing in any manner or eliminating any of the provisions of the Indenture or of any supplemental indenture or modifying in any manner the rights of the holders of the Debentures; provided
that no such supplemental indenture shall (i) extend the Stated Maturity of any Debenture, or reduce the rate or extend the time of payment of interest thereon, or reduce the principal amount thereof or reduce any amount payable upon redemption or
repurchase thereof, or impair the right of any Debentureholder to institute suit for the payment thereof, or make the principal thereof or interest thereon payable in any coin or currency other than that provided in the Debentures, or change the
obligation of the Company to redeem any Debenture on a Redemption Date in a manner adverse to the holders of the Debentures, or change the obligation of the Company to repurchase any Debenture upon a Fundamental Change in a manner adverse to the
holders of the Debentures, or change the obligation of the Company to repurchase any Debenture on a Company Repurchase Date in a manner adverse to the holders of the Debentures, or impair the right to convert the Debentures into Common Stock subject
to the terms set forth in the Indenture, including Section 15.06 thereof, or reduce the number of shares of Common Stock or other property receivable upon conversion, in each case without the consent of the holder of each Debenture so affected, or
modify any of the provisions of Section 11.02 or Section 7.07 thereof, except to increase any such percentage or to provide that certain other provisions of the Indenture cannot be modified or waived without the consent of the holder of each
Debenture so affected, or change any obligation of the Company to maintain an office or agency in the places and for the purposes set forth in Section 5.02 thereof, or reduce the quorum or voting requirements set forth in Article 10 or (ii) reduce
the aforesaid percentage of Debentures, the holders of which are 

  

 A-6 

 
required to consent to any such supplemental indenture, without the consent of the holders of all Debentures then outstanding. Subject to the provisions of
the Indenture, the holders of a majority in aggregate principal amount of the Debentures at the time outstanding may on behalf of the holders of all of the Debentures waive any past default or Event of Default under the Indenture and its
consequences except (A) a default in the payment of interest on or the principal of any of the Debentures, (B) a failure by the Company to convert any Debentures into Common Stock of the Company, (C) a default in the payment of the Redemption Price
pursuant to Article 3 of the Indenture, (D) a default in the payment of the Company Repurchase Price or Fundamental Change Repurchase Price pursuant to Article 3 of the Indenture or (E) a default in respect of a covenant or provisions of the
Indenture which under Article 11 of the Indenture cannot be modified or amended without the consent of the holders of each or all Debentures then outstanding or affected thereby. Any such consent or waiver by the holder of this Debenture (unless
revoked as provided in the Indenture) shall be conclusive and binding upon such holder and upon all future holders and owners of this Debenture and any Debentures which may be issued in exchange or substitution hereof, irrespective of whether or not
any notation thereof is made upon this Debenture or such other Debentures. 
  
 No reference herein to the Indenture and no provision of this Debenture or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and
interest on this Debenture at the place, at the respective times, at the rate and in the coin or currency herein prescribed. 
  
 Interest on the Debentures shall be computed on the basis of a 360-day year of twelve 30-day months. 
  
 The Debentures are issuable in fully registered form, without coupons, in
denominations of $1,000 principal amount and any multiple of $1,000. At the office or agency of the Company referred to on the face hereof, and in the manner and subject to the limitations provided in the Indenture, without payment of any service
charge but with payment of a sum sufficient to cover any tax, assessment or other governmental charge that may be imposed in connection with any registration or exchange of Debentures, Debentures may be exchanged for a like aggregate principal
amount of Debentures of any other authorized denominations. 
  
 At
any time on or after November 6, 2010 and prior to maturity, the Debentures may be redeemed at the option of the Company, in whole or in part, in cash upon mailing a notice of such redemption not less than thirty (30) days but not more than sixty
(60) days before the Redemption Date to the holders of Debentures at their last registered addresses, all as provided in the Indenture, at a Redemption Price equal to 100% of the principal amount of Debentures being redeemed plus accrued and unpaid
interest to, but excluding, the Redemption Date; provided that if the Redemption Date is on May 1 or November 1, then the interest payable on such date shall be paid to the holder of record on the preceding May 1 or November 1, respectively.

  
 In no event will any Debenture be redeemable at the option of
the Company before November 6, 2010. 
  
 The Company may not give
notice of any redemption of the Debentures if a default in the payment of interest on the Debentures has occurred and is continuing. 
  

 A-7 

 The Debentures are not subject to redemption through the operation of any sinking fund. 
  
 If a Fundamental Change occurs at any time prior to maturity of the
Debentures, this Debenture will be redeemable on a Fundamental Change Repurchase Date, specified by the Company, which shall be no later than thirty-five (35) Business Days after the occurrence of such Fundamental Change, at the option of the holder
of this Debenture at a Fundamental Change Repurchase Price in cash equal to 100% of the principal amount thereof, together with accrued interest to (but excluding) the Fundamental Change Repurchase Date; provided that if such Fundamental
Change Repurchase Date falls after a record date and on or prior to the corresponding Interest Payment Date, the interest payable on such Interest Payment Date shall be paid to the holder of record of this Debenture on the preceding April 15 or
October 15, respectively. The Debentures will be redeemable in multiples of $1,000 principal amount. The Company shall mail to all holders of record of the Debentures a notice of the occurrence of a Fundamental Change and of the repurchase right
arising as a result thereof on or before the twenty-fifth (25th) Business Day prior to each Fundamental Change
Repurchase Date. For a Debenture to be so repurchased at the option of the holder, the Company must receive at the office or agency of the Company maintained for that purpose in accordance with the terms of the Indenture, such Debenture with the
form entitled “Form of Fundamental Change Repurchase Election” on the reverse hereof duly completed, together with such Debenture, duly endorsed for transfer, on or before the close of business on the Business Day immediately
preceding the Fundamental Change Repurchase Date. 
  
 Subject to
the terms and conditions of the Indenture, the Company shall become obligated to repurchase in cash, at the option of the holder, all or any portion of the Debentures held by such holder on November 1, 2010, November 1, 2013, and November 1, 2018 in
integral multiples of $1,000 at a Company Repurchase Price of 100% of the principal amount, plus any accrued and unpaid interest on such Debenture to but excluding the Company Repurchase Date. To exercise such right, a holder shall deliver to the
Company such Debenture with the form entitled “Form of Company Repurchase Election” on the reverse hereof duly completed, together with the Debenture, duly endorsed for transfer, at any time from the opening of business on the date
that is twenty-five (25) Business Days prior to such Company Repurchase Date until the close of business on the Business Day immediately preceding the Company Repurchase Date, and shall deliver the Debentures to the Trustee (or other Paying Agent
appointed by the Company) as set forth in the Indenture. 
  
 Holders have the right to withdraw any Repurchase Election by delivering to the Trustee (or other Paying Agent appointed by the Company) a written notice of withdrawal up to the close of business on the Business Day immediately preceding
the Repurchase Date, all as provided in the Indenture. 
  
 If cash
sufficient to pay the Repurchase Price with respect to all Debentures or portions thereof to be repurchased as of any Repurchase Date is deposited with the Trustee (or other Paying Agent appointed by the Company), then on and after such Repurchase
Date, interest will cease to accrue on such Debentures (or portions thereof), and the holder thereof shall have no other rights as such other than the right to receive the Repurchase Price upon surrender of such Debenture. 
  

 A-8 

 Subject to the occurrence of certain events and in compliance with the provisions of the Indenture, prior to the Stated
Maturity of the Debentures, the holder hereof has the right, at its option, to convert each $1,000 principal amount of the Debentures into 60.4084 shares of the Company’s Common Stock (at a Conversion Price of approximately $16.55 per share),
as such shares shall be constituted at the date of conversion and subject to adjustment from time to time as provided in the Indenture, upon surrender of this Debenture with the form entitled “Form of Conversion Notice” on the
reverse hereof duly completed, to the Company at the office or agency of the Company maintained for that purpose in accordance with the terms of the Indenture or, at the option of such holder, the Corporate Trust Office, and, unless the shares
issuable on conversion are to be issued in the same name as this Debenture, duly endorsed by, or accompanied by instruments of transfer in form satisfactory to the Company duly executed by, the holder or by his duly authorized attorney. The Company
will notify the holder thereof of any event triggering the right to convert the Debentures as specified above in accordance with the Indenture. 
  
 If the Company (i) is a party to a consolidation, merger, statutory share exchange or combination, (ii) reclassifies the Common Stock or (iii) sells or
conveys its properties and assets substantially as an entirety to any Person, the right to convert a Debenture into shares of Common Stock may be changed into a right to convert it into securities, cash or other assets of the Company or such other
Person, in each case in accordance with the Indenture. 
  
 No
adjustment in respect of interest on any Debenture converted or dividends on any shares issued upon conversion of such Debenture will be made upon any conversion except as set forth in the next sentence. If this Debenture (or portion hereof) is
surrendered for conversion during the period from the close of business on any record date for the payment of interest to the close of business on the Business Day preceding the following Interest Payment Date and has not been called for redemption
by the Company on a Redemption Date that occurs during such period, this Debenture (or portion hereof being converted) must be accompanied by payment, in immediately available funds or other funds acceptable to the Company, of an amount equal to the
interest otherwise payable on such Interest Payment Date on the principal amount being converted; provided that no such payment shall be required (1) if the Company has specified a Redemption Date that is after a record date and prior to the
next Interest Payment Date, (2) if the Company has specified a Repurchase Date following a Fundamental Change that is during such period or (3) to the extent of any overdue interest, if any overdue interest exists at the time of conversion with
respect to such Debenture. 
  
 No fractional shares will be issued
upon any conversion, but an adjustment and payment in cash will be made, as provided in the Indenture, in respect of any fraction of a share which would otherwise be issuable upon the surrender of any Debenture or Debentures for conversion.

  
 A Debenture in respect of which a holder is exercising its
right to require repurchase upon a Fundamental Change or repurchase on a Repurchase Date may be converted only if such holder withdraws its election to exercise such right in accordance with the terms of the Indenture. 
  
 Any Debentures called for redemption, unless surrendered for conversion by
the holders thereof on or before the close of business on the second Business Day preceding the Redemption Date, may be deemed to be redeemed from the holders of such Debentures for an amount equal 

  

 A-9 

 
to the applicable Redemption Price, together with accrued but unpaid interest to, but excluding, the Redemption Date, by one or more investment banks or
other purchasers who may agree with the Company (i) to purchase such Debentures from the holders thereof and convert them into shares of the Company’s Common Stock and (ii) to make payment for such Debentures as aforesaid to the Trustee in
trust for the holders. 
  
 Upon due presentment for registration
of transfer of this Debenture at the office or agency of the Company maintained for that purpose in accordance with the terms of the Indenture, a new Debenture or Debentures of authorized denominations for an equal aggregate principal amount will be
issued to the transferee in exchange thereof, subject to the limitations provided in the Indenture, without charge except for any tax, assessment or other governmental charge imposed in connection therewith. 
  
 The Company, the Trustee, any authenticating agent, any Paying Agent, any
Conversion Agent and any Debenture Registrar may deem and treat the registered holder hereof as the absolute owner of this Debenture (whether or not this Debenture shall be overdue and notwithstanding any notation of ownership or other writing
hereon made by anyone other than the Company or any Debenture Registrar) for the purpose of receiving payment hereof, or on account hereof, for the conversion hereof and for all other purposes, and neither the Company nor the Trustee nor any other
authenticating agent nor any Paying Agent nor other Conversion Agent nor any Debenture Registrar shall be affected by any notice to the contrary. All payments made to or upon the order of such registered holder shall, to the extent of the sum or
sums paid, satisfy and discharge liability for monies payable on this Debenture. 
  
 No recourse for the payment of the principal of or interest on this Debenture, or for any claim based hereon or otherwise in respect hereof, and no recourse under or upon any obligation, covenant or agreement of the
Company in the Indenture or any supplemental indenture or in any Debenture, or because of the creation of any indebtedness represented thereby, shall be had against any incorporator, stockholder, employee, agent, officer or director or subsidiary,
as such, past, present or future, of the Company or of any successor corporation, either directly or through the Company or any successor corporation, whether by virtue of any constitution, statute or rule of law or by the enforcement of any
assessment or penalty or otherwise, all such liability being, by acceptance hereof and as part of the consideration for the issue hereof, expressly waived and released. 
  
 The Indebtedness, interest and other obligations of any kind evidenced by this Debenture are subordinated in right of
payment, to the extent and in the manner provided in the Indenture, to the prior payment in full in cash of all Senior Indebtedness (whether outstanding on the date hereof or hereafter created, incurred, assumed or Guaranteed), and the subordination
is for the benefit of the holders of Senior Indebtedness. Each Debentureholder by his acceptance of this Debenture authorizes and directs the Trustee on his behalf to take such action as may be necessary or appropriate to effectuate the
subordination provided in the Indenture and appoints the Trustee his attorney-in-fact for any and all such purposes. 
  
 Terms used in this Debenture and defined in the Indenture are used herein as therein defined. 
  

 A-10 

 ABBREVIATIONS 
  
 The following abbreviations, when used in the inscription of the face of this Debenture, shall be construed as though they
were written out in full according to applicable laws or regulations. 
  

					
	TEN COM -	  	as tenants in common	  	UNIF GIFT MIN ACT -          Custodian         
	TEN ENT -	  	as tenant by the entireties	  	(Cust)            (Minor)              
	JT TEN -	  	as joint tenants with right of survivorship	  	under Uniform Gifts to Minors Act
	 	  	and not as tenants in common	  	 
	 	 	 	 	

	 	  	 	  	(State)

  
 Additional
abbreviations may also be used though not in the above list. 
  

 A-11 

 FORM OF 
 CONVERSION NOTICE 
  

	TO:	NAVIGANT INTERNATIONAL, INC. 

	    	WELLS FARGO BANK MINNESOTA, N.A. 

  
 The undersigned registered owner of this Debenture hereby irrevocably exercises the option to convert this Debenture, or the portion thereof (which is
$1,000 or a multiple thereof) below designated, into shares of Common Stock of Navigant International, Inc. in accordance with the terms of the Indenture referred to in this Debenture, and directs that the shares issuable and deliverable upon such
conversion, together with any check in payment for fractional shares and any Debentures representing any unconverted principal amount hereof, be issued and delivered to the registered holder hereof unless a different name has been indicated below.
Capitalized terms used herein but not defined shall have the meanings ascribed to such terms in the Indenture. If shares or any portion of this Debenture not converted are to be issued in the name of a person other than the undersigned, the
undersigned will provide the appropriate information below and pay all transfer taxes payable with respect thereto. Any amount required to be paid by the undersigned on account of interest and Additional Amounts, if any, accompanies this Debenture.

  
 Dated:
                                        
          
  

	
	 
	

	
	 
	

	 Signature(s)

  

 A-12 

	
	Signature(s) must be guaranteed by an “eligible guarantor institution” meeting the requirements of the Debenture Registrar, which requirements include membership or
participation in the Security Transfer Agent Medallion Program (“STAMP”) or such other “signature guarantee program” as may be determined by the Debenture Registrar in addition to, or in substitution for, STAMP, all
in accordance with the Securities Exchange Act of 1934, as amended.
	
	 
	

	 Signature Guarantee

  
 Fill in the
registration of shares of Common Stock if to be issued, and Debentures if to be delivered, other than to and in the name of the registered holder: 
  

	
	
	  
	

	 (Name)

  

	
	
	  
	

	 (Street Address)

  

	
	
	  
	

	 (City, State and Zip Code)

  

	
	
	  
	

	 Please print name and address

  

			
	 Principal amount to be converted
 (if less than all):

		
	$	 	 
	 	 	

  

	
	 Social Security or Other Taxpayer
 Identification Number:

	
	  
	

  

 A-13 

 FORM OF 
 FUNDAMENTAL CHANGE REPURCHASE ELECTION 
  

	TO:	NAVIGANT INTERNATIONAL, INC. 

	    	WELLS FARGO BANK MINNESOTA, N.A. 

  
 The undersigned registered owner of this Debenture hereby irrevocably acknowledges receipt of a notice from Navigant International, Inc. (the
“Company”) as to the occurrence of a Fundamental Change with respect to the Company and requests and instructs the Company to repurchase the entire principal amount of this Debenture, or the portion thereof (which is $1,000 or a
multiple thereof) below designated, in accordance with the terms of the Indenture referred to in this Debenture at the price of 100% of such entire principal amount or portion thereof, together with accrued interest to, but excluding, the
Fundamental Change Repurchase Date, to the registered holder hereof. Capitalized terms used herein but not defined shall have the meanings ascribed to such terms in the Indenture. 
  
 Dated:
                                        
          
  

	
	 
	

	
	 
	

	 Signature(s)

  

 A-14 

 NOTICE: The above signatures of the holder(s) hereof must correspond with the name as written upon the face of the
Debenture in every particular without alteration or enlargement or any change whatever. 
  
 Debenture Certificate Number (if applicable): 
  
 Principal amount to be
repurchased (if less than all): 
  
 Social Security or Other Taxpayer
Identification Number: 
  

 A-15 

 FORM OF 
 COMPANY REPURCHASE ELECTION 
  

	TO:	NAVIGANT INTERNATIONAL, INC. 

	    	WELLS FARGO BANK MINNESOTA, N.A. 

  
 The undersigned registered owner of this Debenture hereby irrevocably acknowledges receipt of a notice from Navigant International, Inc. (the
“Company”) regarding the right of holders to elect to require the Company to repurchase the Debentures and requests and instructs the Company to repay the entire principal amount of this Debenture, or the portion thereof (which is
$1,000 or an integral multiple thereof) below designated, in accordance with the terms of the Indenture at the price of 100% of such entire principal amount or portion thereof, together with accrued interest to, but excluding, the Company Repurchase
Date, to the registered holder hereof. Capitalized terms used herein but not defined shall have the meanings ascribed to such terms in the Indenture. The Debentures shall be repurchased by the Company as of the Company Repurchase Date pursuant to
the terms and conditions specified in the Indenture. 
  
 Dated:
                                        
          
  

	
	 
	

	
	 
	

	 Signature(s)

  

 A-16 

 NOTICE: The above signatures of the holder(s) hereof must correspond with the name as written upon the face of the
Debenture in every particular without alteration or enlargement or any change whatever. 
  
 Debenture Certificate Number (if applicable): 
  

  
 Principal amount to be repurchased (if less than all): 
  

  
 Social Security or Other Taxpayer Identification Number: 
  

  

 A-17 

 ASSIGNMENT 
  

For value received                     
hereby sell(s) assign(s) and transfer(s) unto
                                        
         (Please insert social security or other Taxpayer Identification Number of assignee) the within Debenture, and hereby irrevocably constitutes and appoints attorney to transfer said Debenture on the
books of the Company, with full power of substitution in the premises. 
  
 In connection with any transfer of the Debenture prior to the expiration of the holding period applicable to sales thereof under Rule 144(k) under the Securities Act (or any successor provision) (other than any transfer pursuant to a
registration statement that has been declared effective under the Securities Act), the undersigned confirms that such Debenture is being transferred: 
  

	 	•	To Navigant International, Inc. or a subsidiary thereof; or 

  

	 	•	To a “qualified institutional buyer” in compliance with Rule 144A under the Securities Act of 1933, as amended; or 

  

	 	•	Pursuant to and in compliance with Rule 144 under the Securities Act of 1933, as amended; or 

  

	 	•	Pursuant to a Registration Statement which has been declared effective under the Securities Act of 1933, as amended, and which continues to be effective at the time of transfer;

  
 and unless the Debenture has been transferred to Navigant
International, Inc. or a subsidiary thereof, the undersigned confirms that such Debenture is not being transferred to an “affiliate” of the Company as defined in Rule 144 under the Securities Act of 1933, as amended. 
  
 Unless one of the boxes is checked, the Trustee will refuse to register
any of the Debentures evidenced by this certificate in the name of any person other than the registered holder thereof. 
  
 Dated:
                                        
          
  

	
	 
	

	
	 
	

	 Signature(s)

  

 A-18 

	
	Signature(s) must be guaranteed by an “eligible guarantor institution” meeting the requirements of the Debenture Registrar, which requirements include membership or
participation in the Security Transfer Agent Medallion Program (“STAMP”) or such other “signature guarantee program” as may be determined by the Debenture Registrar in addition to, or in substitution for, STAMP, all
in accordance with the Securities Exchange Act of 1934, as amended.
	
	 
	

	 Signature Guarantee

  
 NOTICE: The signature on the
Conversion Notice, the Fundamental Change Repurchase Election, the Company Repurchase Election or the Assignment must correspond with the name as written upon the face of the Debenture in every particular without alteration or enlargement or any
change whatsoever. 
  

 A-19 

 Schedule I 
  
 [Include Schedule I only for a Global Debenture] 
  
 NAVIGANT INTERNATIONAL, INC. 
 4.875%
Convertible Subordinated Debenture due 2023 
  
 No. 1 
  

							
	 Date

	 	 Principal Amount

	 	 Notation Explaining Principal
Amount Recorded

	  	Authorized Signature of Trustee
or Custodian

	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 
	 	 	 	 	 	  	 

  

 A-20

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